Counting device and aerosol inhaler

Abstract

The utility model discloses a counting device and an aerosol inhaler. In the counting device, a driving rod comprises a main body part, an extending part, a triggering part and an anti-falling part, and a counting gear assembly comprises a gear support, a gear cover plate and a counting gear; the gear support comprises an anti-disengagement matching part, the anti-disengagement matching part is of a boss structure extending in the vertical direction, the anti-disengagement matching part is inserted into a U-shaped limiting groove formed by the anti-disengagement part and the main body part, and the shape and the size of the anti-disengagement matching part are matched with those of the U-shaped limiting groove. The gear cover plate further comprises a rectangular assembling hole, and the extending part of the driving rod is inserted into the rectangular assembling hole and matched with the rectangular assembling hole in shape and size. The counting device is more stable in structure and more stable in operation.

Description

Technical Field

[0001] This utility model relates to a counting device and an aerosol inhaler. Background Technology

[0002] The function of an aerosol inhaler is to spray medication into the user's mouth and nose in the form of an aerosol.

[0003] CN222238491U discloses a mechanical aerosol inhaler. When a user presses a medicine bottle, the bottle moves a drive rod downwards. During this downward movement, the drive rod triggers a counting gear assembly to decrement the count, and also compresses a spring. After the user releases the pressure, the spring returns the drive rod to its original position. This mechanical aerosol inhaler can be used to spray atomized medication into the user's mouth, but is not suitable for spraying aerosol into the user's nasal cavity.

[0004] CN222098527U discloses a counting device for a drug delivery inhaler, which solves the technical problem of how to make full use of the residual drug liquid in the bottle after the count reaches 0.

[0005] In the above technical solutions, the stability of the drive rod during its up-and-down movement needs to be further improved. Utility Model Content

[0006] This invention provides a counting device and an aerosol inhaler to improve the stability of the drive rod during its up-and-down movement.

[0007] This utility model provides the following technical solution: a counting device, comprising: a drive rod, a spring, and a counting gear assembly;

[0008] The drive rod includes a main body, an extension, a trigger, and an anti-detachment part;

[0009] The main body has a horizontally extending length direction;

[0010] The extension is connected to the lower surface of the first end of the main body and extends downward. The extension is in the shape of a column with a rectangular cross-section and its free end is formed as a second cotter pin.

[0011] The triggering part is connected to the lower surface of the middle region of the main body and is located below the main body. The triggering part is used to trigger the counting gear assembly to count.

[0012] The anti-detachment part is connected to the side surface of the first end of the main body and forms a U-shaped limiting groove with the main body. The U-shaped opening of the U-shaped limiting groove faces the direction from the first end of the main body to the second end of the main body. The U-shaped limiting groove extends in the vertical direction and penetrates at least downward.

[0013] The counting gear assembly includes: a gear bracket, a gear cover plate, and a counting gear;

[0014] The gear support includes a gear shaft having a free end and a non-free end;

[0015] The counting gear is sleeved on the gear shaft;

[0016] The gear cover plate is fixedly connected to the gear bracket and seals the free end of the gear shaft;

[0017] The gear bracket includes an anti-detachment mating part, which is a boss structure extending in a vertical direction. The anti-detachment mating part is inserted into the U-shaped limiting groove formed by the anti-detachment part and the main body. The boss structure of the anti-detachment mating part and the U-shaped limiting groove are matched in terms of cross-sectional shape and size.

[0018] The gear cover also includes a rectangular assembly hole, into which the extension of the drive rod is inserted and matches the shape and size of the rectangular assembly hole;

[0019] The spring is sleeved on the extension and provides an upward rebound force to the drive rod after the drive rod is subjected to a downward pressing force and the drive rod is released.

[0020] In some embodiments, the gear cover plate has a flat plate structure protruding in the direction from the free end to the non-free end of the gear shaft. The upper surface of the flat plate structure serves as a spring support surface, and the two ends of the spring abut against the spring support surface and the lower surface of the main body, respectively. The rectangular assembly hole is formed on the flat plate structure, and the rectangular assembly hole is a through hole.

[0021] In some embodiments, the U-shaped groove formed by the anti-detachment part and the main body part is through-holes both upwards and downwards.

[0022] In some embodiments, a guide groove structure is formed at the second end of the main body of the drive rod, and a guide groove portion that mates with the guide groove structure is formed on the gear bracket.

[0023] This utility model provides the following technical solution: an aerosol inhaler, including the aforementioned counting device.

[0024] In some embodiments, a housing is also included, the housing having an inner cavity for receiving a medicine bottle, the inner cavity having an opening formed above the housing for inserting the medicine bottle into the inner cavity;

[0025] Two second cotter pins are formed on the gear bracket, and two second cotter pin positions are formed on the housing. The two second cotter pins are inserted into the two second cotter pin positions in a one-to-one correspondence.

[0026] In some implementations, a protective cap and a back cover are also included;

[0027] The housing has an inner cavity for accommodating a medicine bottle, and the inner cavity has an opening at the top for inserting the medicine bottle into the inner cavity.

[0028] A spray pipe is provided on the front sidewall of the housing, extending upward at an angle in a radially outward direction, wherein the angle between the extension direction of the non-free end of the spray pipe pointing to the free end and the direction of the bottom of the housing pointing to the top is in the range of 50° to 70°.

[0029] The rear sidewall of the housing is provided with a first notch for assembling a counting device, and the counting device is fixed between the housing and the rear cover;

[0030] The protective cap is rotatably connected to the bottom wall of the housing. The protective cap can be rotated to a first state that covers the spray pipe, and the protective cap can also be rotated to a second state that exposes the spray pipe.

[0031] The protective cap has a first buckle on its brim and a first fastening position on the front side wall of the housing. When the first buckle is inserted into the first fastening position, the protective cap is in a first state. When the protective cap is in a second state, the first buckle is disengaged from the first fastening position.

[0032] When the user presses the medicine bottle, the liquid medicine inside the bottle is delivered to the user's nasal cavity through the spray tube, and the edge of the medicine bottle presses against the main body of the drive rod to trigger the counting device to count;

[0033] The back cover covers the first notch and provides a window for observing the count value of the counting device, and the lower central area of ​​the back cover has a second notch to avoid the protective cap.

[0034] In some embodiments, the protective cap includes:

[0035] The hat itself;

[0036] A connecting plate that connects to the opening edge of the cap body;

[0037] A pivot shaft connected to the edge of the connecting plate away from the cap body;

[0038] A pivot fixing cotter pin is provided on the bottom wall of the housing;

[0039] The pivot of the protective cap is located inside the pivot fixing cotter pin on the housing, and the first buckle is set on the end face of the cap body.

[0040] In some embodiments, both ends of the rotating shaft of the protective cap are provided with rotating shaft stops;

[0041] The bottom wall of the housing is also provided with two pivot stops, each corresponding to a pivot stop component. The pivot stops are used to limit the maximum rotation angle of the protective cap in the first and second states, thereby limiting the extreme position of the protective cap's rotation.

[0042] In some embodiments, the pivot stop is a flat plate structure, the pivot stop is located on the side of the corresponding pivot fixing cotter pin facing away from the other pivot fixing cotter pin, the pivot stop extends beyond the end face of the bottom side wall of the housing in the direction from the front side wall to the rear side wall and is located above the bottom side wall, and the pivot stop protrudes radially from the pivot shaft.

[0043] In some embodiments, a second buckle is provided on the outer surface of the bottom wall of the housing, and a second latch corresponding to the second buckle is provided on the inner surface of the rear cover.

[0044] In some embodiments, the housing is provided with two third fastening positions, and the inner surface of the rear cover is provided with two third snaps; the third snaps are inserted into the corresponding third fastening positions one by one.

[0045] In some embodiments, a first cotter pin is provided on the inner surface of the rear cover, and a first cotter pin position corresponding to the first cotter pin is provided on the housing.

[0046] In some embodiments, the housing is provided with an inlet pipe and a spray hole. The longitudinal section of the inlet pipe is an inverted convex shape. The spray hole is connected to the narrow diameter section of the inlet pipe and is inclined upward in a radially outward direction. The angle between the direction from the non-free end of the spray hole to the free end and the direction from the non-free end of the inlet pipe to the free end is in the range of 50° to 70°.

[0047] In some embodiments, the end of the spray orifice is connected to the spray pipe via a cavity, or the spray pipe extends to the end of the spray orifice.

[0048] In the counting device provided by this utility model, the anti-detachment mating part is inserted into the U-shaped limiting groove formed by the anti-detachment part and the main body part. The shape and size of the anti-detachment mating part and the U-shaped limiting groove are matched. The extension part of the drive rod is inserted into the rectangular assembly hole and is matched with the shape and size of the rectangular assembly hole. The two work together to ensure that the drive rod can only move in the up and down direction, and the rotation and shaking of the drive rod are restricted.

[0049] Furthermore, in some aerosol inhalers provided by this utility model, since the spray tube is located on the outside of the shell and extends upward at an angle, the user can operate it with one hand. While pressing down on the medicine bottle, the outlet of the spray tube can be directly facing the nasal cavity, allowing the aerosol to easily enter the nasal cavity. The protective cap is rotatably connected to the bottom side wall of the shell, allowing the user to expose and cover the spray tube by rotating the protective cap, thus preventing contamination of the spray tube and avoiding loss of the protective cap. The second notch on the rear cover expands the rotation angle of the protective cap, while simultaneously making the lower surface of the aerosol inhaler relatively flat, facilitating vertical placement of the aerosol inhaler. This aerosol inhaler is convenient to use, clean and hygienic, and easy to store. Attached Figure Description

[0050] Figure 1 This is an exploded view of the aerosol inhaler of this utility model.

[0051] Figure 2 This is a perspective view of the protective cap of the aerosol inhaler of this utility model.

[0052] Figure 3 This is a perspective view of the housing of the aerosol inhaler of this utility model.

[0053] Figure 4 This is a cross-sectional view of the housing of the aerosol inhaler of this utility model.

[0054] Figure 5 This is a magnified view of a portion of the shell.

[0055] Figure 6 This is an assembly diagram of the housing and protective cap of the aerosol inhaler of this utility model.

[0056] Figure 7 This is a perspective view of the back cover of the aerosol inhaler of this utility model.

[0057] Figure 8 This is a perspective view of the rear cover of the aerosol inhaler of this utility model from another angle.

[0058] Figure 9 This is a perspective view of the drive rod of the counting device of this utility model.

[0059] Figure 10 This is an assembly diagram of the drive rod and spring of the counting device of this utility model.

[0060] Figure 11 This is a perspective view of the gear support of the counting device of this utility model.

[0061] Figure 12 This is a perspective view of the gear support of the counting device of this utility model from another angle.

[0062] Figure 13This is a perspective view of the gear cover plate of the counting device of this utility model.

[0063] Figure 14 This is a perspective view of the gear cover plate of the counting device of this utility model from another angle.

[0064] Figure 15 This is a perspective view of the counting device of this utility model in its assembled state.

[0065] Figure 16 This is a perspective view of the counting device of this utility model in its assembled state, with some parts omitted.

[0066] The attached figures are labeled as follows:

[0067] 1. Housing; 10. Housing cavity; 11. Liquid inlet pipe; 12. Spray hole; 13. Rotary shaft fixing cotter pin; 14. Rotary shaft stop position; 15. Spray pipe; 16. Third fastening position; 17. First cotter pin fastening position; 18. First fastening position; 19. Second snap; 1a. Second cotter pin fastening position;

[0068] 2. Protective cap; 20. Cap body; 21. First buckle; 22. Rotary shaft stop; 23. Rotary shaft; 24. Anti-slip texture; 25. Sleeve; 26. Connecting plate;

[0069] 3. Counting device; 31. Drive rod; 311. Extension; 3111. Third cotter pin; 312. Trigger; 3121. Drive pawl; 3122. Deflection spring; 313. Small step surface; 314. Large step surface; 315. Guide groove structure; 316. Anti-detachment part; 32. Spring; 33. Gear bracket; 331. Gear shaft; 332. Guide groove; 333. Fourth buckle; 334. Second cotter pin; 335. Anti-detachment mating part; 34. Gear cover plate; 341. Fourth buckle position; 342. Second viewing window; 343. Spring support surface; 344. Rectangular assembly hole; 35. Hundreds wheel; 36. Tens wheel; 37. Units wheel; 38. Carry wheel;

[0070] 4. Back cover; 41. First viewing window; 42. Third buckle; 43. First cotter pin; 44. Second latch; 45. Second notch;

[0071] 5. Medicine bottles. Detailed Implementation

[0072] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0073] An embodiment of this utility model provides a counting device, including: a drive rod, a spring, and a counting gear assembly.

[0074] drive lever

[0075] The drive rod includes a main body, an extension, a trigger, and an anti-detachment part;

[0076] The main body has a horizontally extending length direction;

[0077] The extension is connected to the lower surface of the first end of the main body and extends downward. The extension is in the shape of a column with a rectangular cross-section and its free end is formed as a second cotter pin.

[0078] The triggering part is connected to the lower surface of the middle region of the main body and is located below the main body. The triggering part is used to trigger the counting gear assembly to count.

[0079] The anti-detachment part is connected to the side surface of the first end of the main body and forms a U-shaped limiting groove with the main body. The U-shaped opening of the limiting groove faces the direction from the first end of the main body to the second end of the main body. The U-shaped limiting groove extends in the vertical direction and penetrates at least downward.

[0080] The extension has a rectangular cross-section, such as a rectangle or square. The four sides of the extension may have rounded corners at their connecting edges. The counting gear assembly provides a rectangular assembly hole for the extension to be inserted into. The extension of the drive rod is inserted into the rectangular assembly hole and matches the shape and size of the hole. This design prevents the extension from rotating or moving horizontally, ensuring that the drive rod has only one degree of freedom: vertical movement.

[0081] The U-shaped limiting groove formed between the anti-detachment part and the main body mates with the anti-detachment fitting part in the counting gear assembly. The anti-detachment fitting part inserts into the U-shaped limiting groove, and the two match in shape and size, thereby further restricting the drive rod to only have one degree of freedom in the up-down direction. The anti-detachment part also serves to prevent the drive rod from disengaging from the gear support.

[0082] The cross-sectional design of the extension and the shape design of the anti-dislodgement part restrict the degree of freedom of movement of the drive rod, ensuring that when the user presses the medicine bottle, the movement direction of the drive rod is restricted to the up and down direction.

[0083] In some embodiments, the U-shaped groove formed by the anti-detachment part and the main body part is through-holes both upwards and downwards.

[0084] This design allows the anti-disengagement engagement part in the counting gear assembly to protrude upwards from the upper opening of the U-shaped groove as the drive rod moves downwards. This allows for a smaller vertical dimension of the drive rod and a more compact product structure.

[0085] In some other embodiments, the top of the U-shaped groove formed between the anti-detachment part and the main body part is closed.

[0086] In some embodiments, a guide groove structure is formed at the second end of the main body of the drive rod, and a guide groove portion that mates with the guide groove structure is formed on the gear bracket.

[0087] The guide groove structure extends in the vertical direction and cooperates with the guide groove part to further restrict the drive rod to have only one degree of freedom in the vertical movement direction.

[0088] The main body of the drive rod can be stepped, with two stepped surfaces: a larger upper step and a smaller lower step. When the medicine bottle is large, it will contact the larger stepped surface. When the medicine bottle is small, it will contact the smaller stepped surface.

[0089] This invention does not limit the shape of the trigger part, as long as its free end can trigger the counting gear assembly to count.

[0090] Counting gear assembly

[0091] The counting gear assembly includes: a gear bracket, a gear cover plate, and a counting gear;

[0092] The gear support includes a gear shaft having a free end and a non-free end;

[0093] The counting gear is sleeved on the gear shaft;

[0094] The gear cover plate is fixedly connected to the gear bracket and seals the free end of the gear shaft;

[0095] The gear bracket includes an anti-detachment mating part, which is a boss structure extending in a vertical direction. The anti-detachment mating part is inserted into the U-shaped limiting groove formed by the anti-detachment part and the main body. The boss structure of the anti-detachment mating part and the U-shaped limiting groove are matched in terms of cross-sectional shape and size.

[0096] The gear cover also includes a rectangular assembly hole, into which the extension of the drive rod is inserted and matches the shape and size of the rectangular assembly hole.

[0097] The trigger of the drive lever triggers the counting gear assembly to count. The counting gear assembly can be either incrementing or decrementing. The number of counting gears in the counting gear assembly can be one or more. The counting method of the counting gear assembly can be designed according to existing technology.

[0098] The anti-detachment mating parts mate with each other, and the rectangular assembly hole mates with the drive rod, together ensuring that the drive rod has only one degree of freedom in the up and down direction.

[0099] spring

[0100] The spring is sleeved on the extension and provides an upward rebound force to the drive rod after the drive rod is subjected to a downward pressing force and the drive rod is released.

[0101] Specifically, the first end of the spring abuts against the lower surface of the main body of the drive rod, and the second end of the spring abuts against the gear cover plate.

[0102] In some embodiments, the gear cover plate has a flat plate structure protruding in the direction from the free end to the non-free end of the gear shaft. The upper surface of the flat plate structure serves as a spring support surface, and the two ends of the spring abut against the spring support surface and the lower surface of the main body, respectively. The rectangular assembly hole is formed on the flat plate structure, and the rectangular assembly hole is a through hole.

[0103] An embodiment of this utility model further provides an aerosol inhaler, including the aforementioned counting device.

[0104] When in use, the user's pressing of the medicine bottle will trigger the drive lever to move downwards, which in turn drives the counting device to count.

[0105] The structure of the aerosol inhaler and its relationship with the counting device can be designed according to existing technology.

[0106] In some embodiments, the aerosol inhaler includes a housing having a housing cavity for receiving a medicine bottle, the housing cavity forming an opening above the housing for inserting the medicine bottle into the housing cavity;

[0107] Two second cotter pins are formed on the gear bracket, and two second cotter pin positions are formed on the housing. The two second cotter pins are inserted into the two second cotter pin positions in a one-to-one correspondence.

[0108] When assembling the counting device with the housing, insert the two cotter pins into the corresponding second cotter pin positions. This achieves a secure connection between the counting device and the housing.

[0109] Aerosol inhalers can be used to spray medication into a user's mouth or nasal cavity.

[0110] For example, CN222238491U can be used as a reference for design. However, this design is more suitable for spraying medication into the user's mouth; it is not convenient for the user to operate when it is necessary to spray medication into the user's nasal cavity.

[0111] The following structural optimizations were made to the aerosol inhaler to better suit the application of medication into the user's nasal cavity. The aerosol inhaler consists of a housing, a protective cap, and a back cover.

[0112] case

[0113] The housing has an inner cavity for accommodating a medicine bottle, and the inner cavity has an opening at the top of the housing for inserting the medicine bottle into the inner cavity.

[0114] The cross-section of the shell can be approximated as a rectangle with rounded corners, a circle, or other shapes. This invention does not limit the shape of the shell.

[0115] A spray tube extending upward at an angle in a radially outward direction is provided on the front side wall of the housing. The spray tube is used to spray medication into the user's nasal cavity.

[0116] The spray nozzle curves upwards, making it easier to aim the nozzle opening at the nostril and for the user to hold the casing and press the medicine bottle.

[0117] The front wall of the housing refers to the side wall of the housing facing the user when in use.

[0118] In some embodiments, the angle between the direction in which the non-free end of the spray nozzle extends towards the free end and the direction in which the bottom of the housing points towards the top is in the range of 50° to 70°. In a further preferred embodiment, the angle between the direction in which the non-free end of the spray nozzle extends towards the free end and the direction in which the bottom of the housing points towards the top is in the range of 55° to 65°. In one embodiment, the angle between the direction in which the non-free end of the spray nozzle extends towards the free end and the direction in which the bottom of the housing points towards the top is 60°.

[0119] The rear sidewall of the housing is provided with a first notch for assembling a counting device, which is fixed between the housing and the rear cover.

[0120] During assembly, a counting device is inserted into the housing through the first notch. The first notch extends into the bottom wall, left side wall, and right side wall of the housing, thereby matching the shape of the first notch with the shape of the rear cover. In the assembled state, the rear cover closes the first notch.

[0121] In some embodiments, a pivot fixing cotter pin is provided on the bottom wall of the housing.

[0122] The cotter pin for securing the shaft is a cylindrical tube extending horizontally. There can be one or two cotter pins. The function of the cotter pin is to hold the shaft, allowing it to rotate within it.

[0123] Protective hat

[0124] The protective cap is rotatably connected to the bottom wall of the housing. The protective cap can be rotated to a first state that covers the spray pipe, and the protective cap can also be rotated to a second state that exposes the spray pipe.

[0125] For example, the pivot on the protective cap is engaged with the pivot on the housing by a cotter pin and can rotate freely.

[0126] When the protective cap is in the first position, it protects the spray tube from contamination. When the protective cap is in the second position, the user can press the bottle, and the aerosol will enter the user's nasal cavity through the spray tube.

[0127] The protective cap has a first buckle on its brim and a first fastening position on the front side wall of the housing. When the protective cap is in the first state, the first buckle is inserted into the first fastening position.

[0128] The first latch engages with the first locking position, allowing the protective cap to remain securely in its first state. The first latch and the first locking position are detachable. In this state, the pivot stop is also in its stopped position. See below for details.

[0129] In some embodiments, the protective cap includes: a cap body; a connecting plate connected to the opening edge of the cap body; and a pivot connected to the side edge of the connecting plate away from the cap body.

[0130] The pivot is located inside the pivot fixing cotter pin, and the first buckle is disposed on the end face of the cap body.

[0131] In some embodiments, both ends of the rotating shaft are provided with rotating shaft stops;

[0132] The number of cotter pins fixing the rotating shaft is two, which are spaced apart from each other;

[0133] The bottom wall of the housing is also provided with two pivot stops, each corresponding to a pivot fixing cotter pin. The pivot stops are used to limit the maximum rotation angle of the protective cap in the first and second states.

[0134] For example, the pivot stop is a flat plate structure. The pivot stop is located on the side of the corresponding pivot fixing cotter pin that is opposite to the other pivot fixing cotter pin. The pivot stop extends beyond the end face of the bottom side wall of the housing in the direction from the front side wall to the rear side wall and is located above the bottom side wall. The pivot stop protrudes from the pivot in the radial direction of the pivot.

[0135] Back cover

[0136] The back cover covers the first notch and provides a window for observing the counting value of the counting device. The lower central area of ​​the back cover has a second notch to allow the protective cap to open and rotate to a fixed position.

[0137] In some embodiments, to improve the mechanical strength of the back cover, a bridge-shaped structure is provided on the inner surface on both sides of the second notch. The bridge-shaped structure improves the mechanical strength of the bottom of the back cover and avoids the protective cap.

[0138] In some embodiments, a second buckle is provided on the outer surface of the bottom wall of the housing, and a second latch corresponding to the second buckle is provided on the inner surface of the rear cover.

[0139] When assembling the housing and back cover, insert the second clip into the second latch.

[0140] In some embodiments, the housing is provided with two third fastening positions, and the inner surface of the rear cover is provided with two third snaps; the third snaps are inserted into the corresponding third fastening positions one by one.

[0141] When assembling the housing and back cover, insert the third clip into the third latch.

[0142] In some embodiments, a first cotter pin is provided on the inner surface of the rear cover, and a first cotter pin position corresponding to the first cotter pin is provided on the housing.

[0143] When assembling the housing and the back cover, insert the first cotter pin into the first cotter pin position to enhance the stability of the connection between the housing and the back cover.

[0144] In some embodiments, the aerosol inhaler also includes a medicine bottle. The medicine bottle is inserted into the housing with its outlet facing downwards.

[0145] The housing is provided with a liquid inlet pipe and a spray hole. The longitudinal section of the liquid inlet pipe is an inverted convex shape. The spray hole is connected to the narrow diameter section of the liquid inlet pipe and is inclined upward in a radially outward direction.

[0146] The shape of the inlet tube matches the shape of the outlet of the medicine bottle.

[0147] In some embodiments, the end of the spray orifice communicates with the spray pipe via a cavity. In other embodiments, the spray pipe extends to the end of the spray orifice. The former facilitates mold making and has a relatively simple manufacturing process; the latter has a higher utilization rate of the aerosol.

[0148] Example 1

[0149] refer to Figures 9 to 14 Example 1 provides a counting device 3, including: a drive rod 31, a spring 32 and a counting gear assembly.

[0150] refer to Figure 9 and Figure 10 The drive rod 31 includes a main body, an extension 311, a trigger 312, and an anti-detachment part 316.

[0151] The main body has a horizontally extending length direction.

[0152] The extension 311 is connected to the lower surface of the first end of the main body and extends downward. The extension 311 is a column with a rectangular cross-section and its free end forms a third cotter pin 3111.

[0153] The trigger part 312 is connected to the lower surface of the middle region of the main body and is located below the main body. The trigger part 312 is used to trigger the counting gear assembly to count.

[0154] The anti-detachment part 316 is connected to the side surface of the first end of the main body and forms a U-shaped limiting groove with the main body. The U-shaped opening of the U-shaped limiting groove faces the direction from the first end of the main body to the second end of the main body. The U-shaped limiting groove extends in the vertical direction and penetrates at least downward.

[0155] The counting gear assembly includes: a gear support 33, a gear cover 34, and a counting gear.

[0156] refer to Figure 11 and Figure 12 The gear support 33 includes a gear shaft 331, which has a free end and a non-free end.

[0157] refer to Figure 11 and Figure 15 The counting gear is mounted on the gear shaft 331. The counting gear includes a units gear 37, a tens gear 36, and a hundreds gear 35, as well as two carry gears 38.

[0158] One carry wheel 38 is located between the units wheel 37 and the tens wheel 36. One rotation of the units wheel 37 causes the carry wheel 38 to rotate one mark, and the rotation of the carry wheel 38 causes the tens wheel 36 to rotate one mark.

[0159] Another carry wheel 38 is located between the units wheel 37 and the tens wheel 36. When the tens wheel 36 rotates one revolution, it causes the carry wheel 38 to rotate one mark, and the carry wheel 38 rotating one mark in turn causes the hundreds wheel 35 to rotate one mark.

[0160] refer to Figure 13 , Figure 14 and Figure 16 The gear cover plate 34 is fixedly connected to the gear bracket 33 and blocks the free end of the gear shaft 331.

[0161] Combination Figure 11 , Figure 12 and Figure 16 The gear bracket 33 includes an anti-detachment mating part 335, which is a boss structure extending in a vertical direction. The anti-detachment mating part 335 is inserted into the U-shaped limiting groove formed by the anti-detachment part 316 and the main body. The shape and size of the anti-detachment mating part 335 match those of the U-shaped limiting groove.

[0162] Combination Figure 13 , Figure 14 and Figure 16 The gear cover 34 also includes a rectangular assembly hole 344, into which the extension 311 of the drive rod 31 is inserted and matches the shape and size of the rectangular assembly hole 344.

[0163] Combination Figure 10 and Figure 16 Spring 32 is sleeved on extension 311 and provides upward rebound force to drive rod 31 after it is pressed downward and released.

[0164] The gear cover plate 34 has a flat plate structure that protrudes from the free end of the gear shaft 331 toward the non-free end. One side surface of the flat plate structure serves as a spring support surface 343. The two ends of the spring 32 abut against the spring support surface and the lower surface of the main body, respectively. A rectangular assembly hole 344 is formed on the flat plate structure and is a through hole.

[0165] The U-shaped groove formed by the anti-detachment part 316 and the main body is through both upward and downward.

[0166] The second end of the main body of the drive rod 31 forms a guide groove structure 315, and the gear bracket 33 forms a guide groove portion 332 that cooperates with the guide groove structure 315.

[0167] refer to Figure 9 and Figure 10 The free end of the trigger part 312 forms a drive pawl 3121. The middle section of the trigger part 312 is bent to form a deflection spring part 3122. The deflection spring part 3122 is elastic, so even when the counting device calculates the maximum or minimum value and the units wheel 37, tens wheel 36 and hundreds wheel 35 are locked, the drive rod 31 can still be pressed down by the user and will not affect the use of the remaining medicine in the medicine bottle 5.

[0168] refer to Figure 9 and Figure 10 The upper surface of the main body of the drive rod 31 is stepped, with the upper step surface being a large step surface 314 and the lower step surface being a small step surface 313, so that the drive rod 31 can be adapted to medicine bottles 5 of different sizes.

[0169] refer to Figure 12 and Figure 14The fourth buckle 333 on the gear bracket 33 cooperates with the fourth buckle 341 on the gear cover plate 34.

[0170] refer to Figure 11 The two second cotter pins 334 on the gear bracket 33 are used for assembling the gear bracket 33 with the aerosol inhaler.

[0171] refer to Figure 14 and combined Figure 15 The second viewing window 342 on the gear cover 34 can be used to observe the internal structure of the counting device.

[0172] Other design details are based on existing designs and will not be described in detail here.

[0173] Example 2

[0174] refer to Figures 1 to 8 Example 2 provides an aerosol inhaler, including: a housing 1, a protective cap 2, a counting device 3, and a rear cover 4. The counting device 3 is the same as the counting device provided in Example 1.

[0175] Combination Figure 1 and Figure 4 The housing 1 has an inner cavity 10 for accommodating the medicine bottle 5. An opening is formed in the upper part of the housing 1 for inserting the medicine bottle 5 into the inner cavity 10.

[0176] refer to Figure 3 A spray pipe 15 is provided on the front side wall of the housing 1, extending upward at an angle in a radially outward direction. The spray pipe 15 is a rigid straight pipe, with the end furthest from the housing 1 being higher than the end closest to the housing 1.

[0177] A first notch for assembling the counting device 3 is provided on the rear side wall of the housing 1. The counting device 3 is fixed between the housing 1 and the rear cover 4. (Reference) Figure 1 The counting device 3 is inserted into the housing 1 through the first notch, and then the first notch is covered by the rear cover 4. The housing 1 is provided with a structure for fixing the counting device 3.

[0178] The protective cap 2 is rotatably connected to the bottom wall of the housing 1. The protective cap 2 can be rotated to a first state that covers the spray pipe 15, and the protective cap 2 can also be rotated to a second state that exposes the spray pipe 15. Figure 6 This shows the second state of the protective cap 2.

[0179] Combination Figure 2 and Figure 3The protective cap 2 has a first buckle 21 on its brim and a first fastening position 18 on the front side wall of the housing 1. When the protective cap 2 is in the first state, the first buckle 21 is inserted into the first fastening position 18. The protective cap 2 covers the spray tube 15 to prevent the spray tube 15 from being contaminated. The first buckle 21 and the first fastening position 18 are detachably connected. When the user needs to spray medication into the nasal cavity, the user can forcefully separate the protective cap 2 from the housing 1.

[0180] refer to Figure 1 When the user presses the medicine bottle 5, the medicine bottle 5 triggers the counting device 3 to count. The edge of the medicine bottle 5 touches the counting device 3, thereby triggering the counting device 3 to count. Specifically, the counting device 3 decrements the count.

[0181] Combination Figure 1 , Figure 7 and Figure 8 The rear cover 4 covers the first notch and provides a viewing window 41 for observing the counting value of the counting device 3. The lower central area of ​​the rear cover 4 has a second notch 45 to avoid the protective cap 2. The second notch 45 extends forward to the end face of the rear cover 4 and backward to the bottom of the viewing window 41, leaving a gap between it and the viewing window 41.

[0182] refer to Figures 2 to 5 Protective cap 2 includes:

[0183] Hat body 20;

[0184] A connecting plate 26 that connects to the opening edge of the cap body;

[0185] A pivot 23 is connected to the edge of the connecting plate 26 away from the cap body;

[0186] A pivot fixing cotter pin 13 is provided on the bottom wall of housing 1;

[0187] The rotating shaft 23 is located inside the rotating shaft fixing cotter pin 13, and the first buckle 21 is set on the end face of the cap body.

[0188] Anti-slip texture 24 is provided on the outer surface of the cap body 20 to increase the friction between the cap body 20 and the user's fingers.

[0189] The cap body 20 is a cap-shaped structure with the center bulging outwards.

[0190] The diameter of the middle part of the rotating shaft 23 is larger than the diameter of the contact area between the rotating shaft 23 and the rotating shaft fixing cotter pin 13, thereby limiting the rotating shaft 23 in its axial direction.

[0191] Both ends of the rotating shaft 23 are provided with rotating shaft stop parts 22;

[0192] There are two cotter pins 13 for fixing the rotating shaft, which are spaced apart from each other.

[0193] Two pivot stops 14 are also provided on the bottom wall of the housing 1. The pivot stops 14 are provided in a one-to-one correspondence with the pivot fixing cotter pins 13. The pivot stops 14 are used to limit the maximum rotation angle of the protective cap 2 in the first and second states.

[0194] The pivot stop 14 is a flat plate structure located on the side of the corresponding pivot fixing cotter pin 13 facing away from the other pivot fixing cotter pin 13. It extends beyond the bottom side wall of the housing 1 along the direction from the front side wall to the rear side wall and is located above the bottom side wall. The pivot stop 22 protrudes radially from the pivot 23.

[0195] Combination Figure 2 and Figure 5 When the protective cap 2 rotates to the first state, the shaft stop 22 abuts against the lower surface of the flat plate structure of the shaft stop position 14, restricting the shaft 23 from continuing to rotate; when the protective cap 2 rotates to the second state, the shaft stop 22 abuts against the end face of the bottom side wall of the housing 1, restricting the shaft 23 from continuing to rotate.

[0196] Combination Figure 5 and Figure 8 A second buckle 19 is provided on the outer surface of the bottom wall of the housing 1, and a second latch 44 corresponding to the second buckle 19 is provided on the inner surface of the rear cover 4. During assembly, the second latch 44 is fastened onto the second opening 19.

[0197] The housing 1 is provided with two third latches 16, and the inner surface of the rear cover 4 is provided with two third latches 42; the third latches 42 are inserted into the corresponding third latches 16 one by one.

[0198] A first cotter pin 43 is provided on the inner surface of the back cover 4, and a first cotter pin position 14 corresponding to the first cotter pin 43 is provided on the housing 1. The first cotter pin 43 and the first cotter pin position 14 are engaged to make the connection between the back cover 4 and the housing 1 more secure.

[0199] refer to Figure 3 The housing 1 is provided with an inlet pipe 11 and a spray hole 12. The longitudinal section of the inlet pipe 11 is an inverted convex shape. The spray hole 12 is connected to the narrow diameter section of the inlet pipe 11 and is inclined upward in a radially outward direction.

[0200] The end of the spray nozzle 12 is connected to the spray tube 15 through a cavity (not shown). The aerosol is sprayed obliquely upward into the spray tube 15 within the spray nozzle 12, and then into the user's nasal cavity through the spray tube 15. The spray tube 15 and the spray nozzle 12 extend in the same direction and share a common centerline.

[0201] When the user presses the medicine bottle 5, the edge of the medicine bottle 5 presses the drive rod, the drive rod squeezes the spring, and the drive rod triggers the counting gear assembly to decrement the count.

[0202] When the user releases the medicine bottle 5, the spring drives the drive rod to return to its original position. The counting device 3 is the counting device provided in Example 1.

[0203] refer to Figure 11 and Figure 4 Two second cotter pins 334 are formed on the gear bracket, and two second cotter pin positions 1a are formed on the housing 1. The two second cotter pins 334 are inserted into the two second cotter pin positions 1a in a one-to-one correspondence.

[0204] Because the spray tube is located on the outside of the casing and extends upwards at an angle, the angle between the direction of the non-free end of the spray tube pointing towards the free end and the direction of the bottom of the casing pointing towards the top is 60°. Users can operate with one hand; while pressing down on the bottle, the spray tube outlet is directly facing the nasal cavity, making it ergonomic and allowing the aerosol to easily enter the nasal cavity. The protective cap is rotatably connected to the bottom side wall of the casing, allowing users to expose and seal the spray tube by rotating the cap, preventing contamination of the spray tube and avoiding loss of the protective cap. The second notch on the rear cover widens the rotation angle of the protective cap, while simultaneously making the lower surface of the aerosol inhaler relatively flat, facilitating vertical placement of the aerosol inhaler. This aerosol inhaler is convenient to use, hygienic, and easy to store.

[0205] Example 3

[0206] Continue to refer to Figures 1 to 8 The only difference between Example 3 and Example 2 is that Example 3 further includes a medicine bottle 5.

[0207] Example 4

[0208] Example 4 provides an aerosol inhaler, which uses the counting device provided in Example 1, and the rest of the structure is designed according to CN222238491U.

[0209] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. A counting device, characterized in that include: Drive rod, spring, and counting gear assembly; The drive rod includes a main body, an extension, a trigger, and an anti-detachment part; The main body has a horizontally extending length direction; The extension is connected to the lower surface of the first end of the main body and extends downward. The extension is in the shape of a column with a rectangular cross-section and its free end is formed as a second cotter pin. The triggering part is connected to the lower surface of the middle region of the main body and is located below the main body. The triggering part is used to trigger the counting gear assembly to count. The anti-detachment part is connected to the side surface of the first end of the main body and forms a U-shaped limiting groove with the main body. The U-shaped opening of the U-shaped limiting groove faces the direction from the first end of the main body to the second end of the main body. The U-shaped limiting groove extends in the vertical direction and penetrates at least downward. The counting gear assembly includes: a gear bracket, a gear cover plate, and a counting gear; The gear support includes a gear shaft having a free end and a non-free end; The counting gear is sleeved on the gear shaft; The gear cover plate is fixedly connected to the gear bracket and seals the free end of the gear shaft; The gear bracket includes an anti-detachment mating part, which is a boss structure extending in a vertical direction. The anti-detachment mating part is inserted into the U-shaped limiting groove formed by the anti-detachment part and the main body. The boss structure of the anti-detachment mating part and the U-shaped limiting groove are matched in terms of cross-sectional shape and size. The gear cover also includes a rectangular assembly hole, into which the extension of the drive rod is inserted and matches the shape and size of the rectangular assembly hole; The spring is sleeved on the extension and provides an upward rebound force to the drive rod after the drive rod is subjected to a downward pressing force and the drive rod is released.

2. The counting device of claim 1, wherein, The gear cover plate has a flat plate structure that protrudes from the free end of the gear shaft to the non-free end. The upper surface of the flat plate structure serves as a spring support surface, and the two ends of the spring abut against the spring support surface and the lower surface of the main body, respectively. The rectangular assembly hole is formed on the flat plate structure and is a through hole.

3. The counting device of claim 1, wherein, The U-shaped groove formed by the anti-detachment part and the main body part is open both upwards and downwards.

4. The counting device of claim 1, wherein, The second end of the main body of the drive rod forms a guide groove structure, and a guide groove portion that cooperates with the guide groove structure is formed on the gear bracket.

5. An aerosol inhaler, characterised in that, Includes the counting device according to any one of claims 1 to 4.

6. The aerosol inhaler of claim 5, wherein, It also includes a housing having an inner cavity for accommodating a medicine bottle, the inner cavity having an opening formed above the housing for inserting the medicine bottle into the inner cavity; Two second cotter pins are formed on the gear bracket, and two second cotter pin positions are formed on the housing. The two second cotter pins are inserted into the two second cotter pin positions in a one-to-one correspondence.

7. The aerosol inhaler according to claim 6, characterized in that, It also includes a protective cap and a back cover; A spray pipe is provided on the front sidewall of the housing, extending upward at an angle in a radially outward direction, wherein the angle between the extension direction of the non-free end of the spray pipe pointing to the free end and the direction of the bottom of the housing pointing to the top is in the range of 50° to 70°. The rear sidewall of the housing is provided with a first notch for assembling a counting device, and the counting device is fixed between the housing and the rear cover; The protective cap is rotatably connected to the bottom wall of the housing. The protective cap can be rotated to a first state that covers the spray pipe, and the protective cap can also be rotated to a second state that exposes the spray pipe. The protective cap has a first buckle on its brim and a first fastening position on the front side wall of the housing. When the first buckle is inserted into the first fastening position, the protective cap is in a first state. When the protective cap is in a second state, the first buckle is disengaged from the first fastening position. When the user presses the medicine bottle, the liquid medicine inside the bottle is delivered to the user's nasal cavity through the spray tube, and the edge of the medicine bottle presses against the main body of the drive rod to trigger the counting device to count; The back cover covers the first notch and provides a window for observing the count value of the counting device, and the lower central area of ​​the back cover has a second notch to avoid the protective cap.

8. The aerosol inhaler of claim 7, wherein, The protective cap includes: The hat itself; A connecting plate that connects to the opening edge of the cap body; A pivot shaft connected to the edge of the connecting plate away from the cap body; A pivot fixing cotter pin is provided on the bottom wall of the housing; The pivot of the protective cap is located inside the pivot fixing cotter pin on the housing, and the first buckle is set on the end face of the cap body.

9. The aerosol inhaler of claim 8, wherein, Both ends of the rotating shaft of the protective cap are provided with rotating shaft stops; The bottom wall of the housing is also provided with two pivot stops, each corresponding to a pivot stop component. The pivot stops are used to limit the maximum rotation angle of the protective cap in the first and second states, thereby limiting the extreme position of the protective cap's rotation.

10. The aerosol inhaler of claim 7, wherein, The housing is provided with an inlet pipe and a spray hole. The longitudinal section of the inlet pipe is an inverted convex shape. The spray hole is connected to the narrow diameter section of the inlet pipe and is inclined upward in a radially outward direction. The angle between the direction from the non-free end of the spray hole to the free end and the direction from the non-free end of the inlet pipe to the free end is in the range of 50° to 70°.

Images