Counting device and inhalation device

Abstract

The application discloses a counting device and an inhalation type drug delivery device. The counting device comprises a shell, an elastic pushing element, a digital display disc and an upper cover. The elastic pushing element comprises a pawl, a pawl driving part and an elastic reset part. The pawl is arranged to push the digital display disc to rotate. The pawl driving part is connected with the pawl and is arranged to drive the pawl to move. The elastic reset part is connected with the pawl driving part and is used to provide a rebound force for the pawl driving part so that the pawl driving part is reset. The shell comprises a shell body, and the shell body is internally provided with a first accommodating part, a second accommodating part, a first guide groove and a second guide groove. The upper cover comprises an upper cover body, and the upper cover body is internally provided with a third guide groove and an elastic pushing element pressing plate. The counting device is accurate in counting and convenient to use.

Description

Technical Field

[0001] The invention relates to a counting device and an inhalation-type drug-drug device. Background Art

[0002] Metered-dose inhalers (MDIs) with a counter function allow patients to intuitively monitor the remaining medication in the reservoir, making them popular in the market. MDI counters can be categorized as mechanical or electronic. Mechanical counters are inexpensive and require minimal environmental requirements.

[0003] CN110559528A discloses a push-button aerosol dispenser with a counter, comprising a push-button, a cap, a counter, and a counter housing. The counter comprises a counter base, a gear, a tens disk, and a units disk. The counter base is inserted into the outer wall of the push-button, a fixed shaft is disposed on the outer wall of the push-button, the units disk is sleeved outside the fixed shaft, and the tens disk is sleeved and pressed onto the units disk. A units disk ratchet is disposed on the side of the units disk, and a coaxial tens disk gear is disposed within the units disk ratchet. The counter base includes a cantilever beam, an actuating rod below the cantilever beam, and a connecting arm connecting the cantilever beam and the actuating rod. The actuating rod has an outwardly protruding end. One end of the cantilever beam is connected to the counter base, while the other end of the cantilever beam is suspended in the air. An actuating pawl is provided on the cantilever beam at the suspended end. The end of the actuating pawl is tilted outward and extends into the ratchet of the units disk. When the actuating pawl moves downward, it drives the ratchet of the units disk to rotate one position, completing a count. A gear shaft hole is provided on the outer wall of the push-twist mechanism. The gear shaft is inserted into the gear shaft hole. The gear meshes with the units disk gear and the tens disk gear respectively. The counter uses the actuating pawl to drive the units disk gear to rotate, and the units disk gear drives the tens disk gear via a gear.

[0004] CN101657829A discloses a dose counter for a metered dose inhaler, comprising: an actuator; a rotating gear; a driver for driving the rotating gear in a stepwise manner in response to movement of the actuator, the rotating gear comprising a wheel mounted on a main shaft, the wheel having a plurality of ratchet teeth around its periphery; a pawl for preventing the rotating gear from rotating inversely; a display coupled to the rotating gear, the display having a visible array of increasing integers on its surface, the increasing integer array being indexable by one integer corresponding to each step of the stepwise rotational motion of the rotating gear; wherein the pawl comprises at least two ratchet teeth, the at least two ratchet teeth being radially spaced apart such that one of the ratchet teeth engages with a ratchet tooth of the wheel after each step of the stepwise rotational motion of the rotating gear. This counter is provided with only one rotating gear, and the number of digits it can count is limited, which cannot meet the requirements of a large-capacity, multiple-use inhaler. Summary of the Invention

[0005] Therefore, one object of the present application is to provide a counting device which is accurate and easy to use. Further, the counting device of the present application is compact and saves space. Another object of the present application is to provide an inhalation administration device which can accurately count and administer.

[0006] In one aspect, the present application provides a counting device, comprising a housing, an elastic pushing element, a digital display disc and a top cover.

[0007] The elastic pushing element comprises a pawl, a pawl driving part and an elastic reset part; the pawl is arranged to push the digital display disc to rotate; the pawl driving part is connected with the pawl and arranged to drive the pawl to move; the elastic reset part is connected with the pawl driving part and arranged to provide a rebound force for the pawl driving part so as to reset the pawl driving part.

[0008] The housing comprises a housing body, the housing body is internally provided with a first accommodating part, a second accommodating part, a first second guide slot and a second guide slot; the first accommodating part is arranged at the upper part of the housing body and arranged to accommodate the digital display disc; the second accommodating part is arranged below the first accommodating part and arranged to accommodate the elastic reset part and provide space for the elastic reset part to elastically deform; the first guide slot is arranged at the top of the second accommodating part and arranged to connect the first accommodating part and the second accommodating part; the second guide slot is arranged below the first guide slot; a part of the pawl driving part is arranged in the first guide slot and a part of the pawl driving part is arranged in the second guide slot, so that the pawl driving part moves along the length direction of the counting device.

[0009] The digital display disc is arranged in the first accommodating part, and the lower surface of the digital display disc is provided with a ratchet wheel arranged to be engaged with the pawl.

[0010] The top cover comprises a top cover body, the top cover body is internally provided with a third guide slot arranged to cooperate with the second guide slot so as to make the pawl driving part move along the length direction of the counting device; the top cover body is internally provided with an elastic pushing element pressing plate in the region corresponding to the second accommodating part, the elastic pushing element pressing plate is arranged to limit the position of the elastic pushing element in the thickness direction of the counting device; and the top cover is arranged to cover the housing.

[0011] According to the counting device, preferably, the projection of the elastic reset part on the horizontal plane is a minor arc, the middle part of the elastic reset part is connected with the pawl driving part; the pawl driving part comprises a driving part and a connecting part; the driving part is a vertical rod structure; the connecting part comprises a vertical segment and a curved segment, one end of the curved segment is connected with one end of the driving part, the other end of the curved segment is connected with one end of the vertical segment, the other end of the vertical segment is connected with the pawl; the other end of the driving part is a free end, the free end of the driving part is provided with a limiting part, and the limiting part is arranged to be capable of being accommodated in the third guide groove.

[0012] According to the counting device, preferably, the upper cover body is provided with a guide plate, the guide plate comprises a first guide plate and a second guide plate, the first guide plate and the second guide plate are oppositely arranged, and a third guide groove is formed between the first guide plate and the second guide plate; the elastic pushing element pressing plate comprises an elastic pushing element longitudinal pressing plate and an elastic pushing element transverse pressing plate; the elastic pushing element longitudinal pressing plate is arranged above the guide plate and is arranged along the length direction of the counting device; the elastic pushing element transverse pressing plate is arranged above the guide plate and is arranged near the lower end of the elastic pushing element longitudinal pressing plate, and the elastic pushing element transverse pressing plate is arranged along the width direction of the counting device.

[0013] According to the counting device, preferably, the shell body is provided with a first accommodating part boss, the first accommodating part boss defines the position of the first accommodating part, and an opening is arranged near the bottom of the first accommodating part boss; the second accommodating part is formed by a limiting part and a second accommodating part baffle; the limiting part is arranged in at least two groups, and the two groups are arranged at two ends of the opening respectively; one end of the limiting part is connected with the first accommodating part boss, the limiting part extends along the width direction of the counting device, and the other end of the limiting part is a free end; the free ends of the limiting parts arranged at the two ends of the opening have a gap therebetween, so as to form a first guide groove; the length of the second accommodating part is equal to the length of the elastic reset part in the length direction of the counting device; and the width of the second accommodating part is slightly greater than the width of the elastic reset part, so as to provide space for the elastic reset part to elastically deform.

[0014] According to the counting device of the present invention, preferably, the digital display disk includes an inner display disk and an outer display disk; the inner display disk includes an inner disk panel, an inner disk ratchet and a driving component; the inner disk ratchet is arranged on the lower surface of the inner disk panel, and the inner disk ratchet is engaged with the pawl; the driving component is connected to the lower surface of the inner disk panel, the driving component is provided with an outer disk shift tooth, and the lower surface of the driving component is provided with an inner disk boss; the outer display disk is sleeved outside the inner display disk, and the outer display disk includes an outer disk panel and an outer disk ratchet; the outer disk ratchet The outer disk ratchet is arranged on the lower surface of the outer disk panel; the outer disk display outer disk is arranged on the first accommodating portion boss, so that the height of the display outer disk is higher than the height of the display inner disk, so that the outer disk shift teeth and the outer disk ratchet do not contact each other; the first accommodating portion is provided with a shell body boss, and the shell body boss is arranged to lift the outer disk shift teeth when it contacts the inner disk boss, so that the outer disk shift teeth are engaged with the outer disk ratchet, and then the outer disk shift teeth drive the outer disk ratchet to rotate.

[0015] According to the counting device of the present invention, preferably, the lower surface of the inner disk panel is provided with a connecting boss, and the connecting boss is arranged on the outer circumference of the inner disk ratchet; the driving component includes a radial portion and a circumferential portion; one end of the radial portion is connected to the connecting boss, and the other end of the radial portion is connected to one end of the circumferential portion, and the other end of the circumferential portion is a free end, and an outer disk shift tooth is arranged on the outer side; the inner disk boss is arranged on the lower surface of the free end of the circumferential portion; the inner disk boss includes a first part formed by the free end of the circumferential portion of the driving component extending toward the lower surface of the inner disk panel and a second part formed by the first part extending along the circumferential portion of the driving component; the surface of the first part away from the inner disk panel is a slope surface; a part of the surface of the second part away from the inner disk panel is a slope surface, and the other part is a plane; the slope surface of the first part is connected to the slope surface of the second part, and the lowest point of the slope surface of the first part is at the same height as the highest point of the slope surface of the second part; the projection of the outer shell body boss on the horizontal plane is approximately triangular, and the arc-shaped smooth transition between adjacent sides.

[0016] According to the counting device of the present invention, preferably, a locking protrusion is provided on the lower surface of the outer disk ratchet; when the number displayed on the digital display disk is the minimum value, the locking protrusion rotates to one side of the pawl driving part, and due to the obstruction of the pawl driving part, the rotation of the digital display disk is restricted, thereby locking the position of the digital display disk.

[0017] According to the counting device of the present invention, preferably, an inner disk ratchet pawl is provided on the housing body; the inner disk ratchet pawl is configured to engage with the inner disk ratchet, thereby limiting the rotation direction of the display inner disk.

[0018] According to the counting device of the present invention, preferably, an outer disk ratchet check pawl is provided on the shell body; the outer disk ratchet has an inner ring portion and an outer ring portion; the inner ring portion is provided with transmission teeth, and the transmission teeth are configured to engage with the outer disk shift teeth; the outer ring portion is provided with stopping teeth; the stopping teeth are configured to engage with the outer disk ratchet check pawl to limit the rotation direction of the display outer disk; the outer ring portion includes a toothed side wall and a smooth side wall; the toothed side wall is provided with transmission teeth, and the smooth side wall is not provided with transmission teeth.

[0019] In another aspect, the present invention provides an inhalation medication device, preferably comprising the above-mentioned counting device.

[0020] The counting device of the present invention uses an elastic propulsion element to drive the digital display to count. First and second guide grooves provided on the housing body, as well as a third guide groove provided on the upper cover, ensure that the pawl drive unit moves along the length of the counting device. This ensures that each movement of the pawl drive unit accurately pushes the ratchet wheel forward one tooth position, thereby ensuring accurate counting. The elastic reset portion of the present invention is positioned within the second accommodating portion, which not only meets the requirement that the pawl drive unit be displaced by an external force but also allows the elastic reset portion to return to an unstressed state after the external force is removed, restoring the pawl drive unit to its initial position.

[0021] According to the preferred technical solution of the present invention, an inner disk ratchet pawl and an outer disk ratchet pawl are provided in the shell of the present invention. When the elastic reset part returns from a stressed state to an unstressed state, a reverse pushing force is generated, which can prevent the display inner disk and the display outer disk from rotating in the opposite direction, thereby ensuring the accuracy of counting.

[0022] Furthermore, the present invention achieves a counting transmission between the inner and outer display discs by cleverly integrating the outer disc shifting teeth and inner disc bosses with the outer disc bosses. A portion of the inner circumference of the outer display disc has smooth sidewalls. Thus, when the value on the outer display disc decreases to a minimum, the pawl drive unit is actuated again. Even if the outer disc shifting teeth are lifted by the inner disc bosses and the outer housing bosses, the outer display disc will not rotate, ensuring accurate counting.

[0023] According to the preferred technical scheme of the present application, the lower surface of the outer disc ratchet is provided with a locking protrusion. When the number displayed by the digital display disc is the minimum value, the pawl driving part is driven by external force again, at this time, the display inner disc outer disc rabbet is just engaged with the display outer disc driving tooth, so that the display inner disc and the display outer disc become a whole. The locking protrusion is just rotated to one side of the pawl driving part, and the rotation of the display outer disc is limited due to the block of the pawl driving part, so as to lock the position of the whole digital display disc. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is an exploded view of a counting device of the present application.

[0025] Figure 2 It is a structure diagram of the elastic pushing element. Figure 1

[0026] It is a structure diagram of the elastic pushing element from the A side. Figure 3 Figure 2 It is a structure diagram of the housing.

[0027] Figure 4 Figure 1 It is a three-dimensional structure diagram of the housing.

[0028] Figure 5 It is a three-dimensional structure diagram of the housing. Figure 4

[0029] It is a partial enlarged view of the A part. Figure 6 Figure 5 It is a partial enlarged view of the B part.

[0030] Figure 7 Figure 5 It is a partial enlarged view of the C part.

[0031] Figure 8 It is a partial enlarged view of the D part. Figure 5

[0032] It is a partial enlarged view of the E part. Figure 9 Figure 5 It is an assembly structure diagram of the elastic pushing element and the housing.

[0033] Figure 10 It is a three-dimensional structure diagram of the display inner disc.

[0034] Figure 11 Figure 1 It is a three-dimensional structure diagram of the display inner disc.

[0035] Figure 12 It is a partial enlarged view of the E part. Figure 11

[0036] Figure 13 It is a partial enlarged view of the E part.​​​​​​​ Figure 11 The diagram shown is a schematic structural diagram of the inner disk viewed from the top surface.

[0037] Figure 14 for Figure 11 The figure shows a schematic structural diagram of the inner disk viewed from the bottom surface.

[0038] Figure 15 A schematic diagram showing the assembly structure of the inner disk, the shell and the elastic pushing element.

[0039] Figure 16 for Figure 15 A partial enlarged view of part F is shown.

[0040] Figure 17 for Figure 15 A partial enlarged view of section G is shown.

[0041] Figure 18 for Figure 1 The diagram shows the three-dimensional structure of the outer disk.

[0042] Figure 19 for Figure 18 The diagram shown is a schematic structural diagram of the display outer disk viewed from the top surface.

[0043] Figure 20 for Figure 18 The diagram shown is a schematic structural diagram of the display outer disk viewed from the top surface.

[0044] Figure 21 It is a schematic diagram of the assembly structure of the display outer disk, the display inner disk and the shell.

[0045] Figure 22 for Figure 21 A partial enlarged view of the H part.

[0046] Figure 23 for Figure 1 Schematic diagram of the three-dimensional structure of the upper cover shown.

[0047] Figure 24 for Figure 23 The structure diagram of the upper cover shown is viewed from the upper surface.

[0048] Figure 25 for Figure 24 The structure diagram of the upper cover shown is viewed from the bottom surface.

[0049] The reference numerals are as follows:

[0050] 1 - shell; 101 - shell body; 102 - first accommodating portion boss; 103 - first accommodating portion partition; 104 - limiting component; 105 - second guide groove; 106 - shell body boss; 107 - inner disc ratchet pawl; 108 - outer disc ratchet pawl; 109 - inner disc positioning component; 110 - connecting component; 111 - upper cover positioning component; 112 - shortening muscle position;

[0051] 2 - elastic pushing element; 21 - pawl; 22 - pawl driving portion; 221 - driving portion; 2221 - vertical section; 2222 - curved section; 23 - elastic reset portion; 24 - limiting portion; 25 - external force pressing portion;

[0052] 3 - display inner disc; 31 - inner disc panel; 311 - first positioning hole; 312 - connecting boss; 32 - inner disc ratchet; 321 - second positioning hole; 33 - driving component; 331 - radial portion; 332 - circumferential portion; 333 - outer disc rabbet; 334 - inner disc boss; 3341 - first portion; 3342 - second portion; 341 - driving meshing tooth position; 342 - stop meshing tooth position;

[0053] 4 - display outer disc; 41 - outer disc panel; 411 - notch; 412 - outer disc positioning hole; 42 - outer disc ratchet; 421 - transmission tooth; 422 - stop tooth; 423 - locking protrusion;

[0054] 5 - upper cover; 51 - upper cover body; 521 - first guide plate; 522 - second guide plate; 523 - upper cover lower positioning groove; 531 - first elastic pushing element longitudinal pressing plate; 532 - second elastic pushing element longitudinal pressing plate; 541 - first elastic pushing element transverse pressing plate; 542 - second elastic pushing element transverse pressing plate; 55 - upper positioning column; 56 - lower positioning column; 57 - fixing device; 58 - display window; 59 - reinforcing rib. DETAILED DESCRIPTION

[0055] The application will be described in more detail below, but the application is not limited thereto.

[0056] The "length direction" described in the application refers to the Y direction in the drawings. Figure 1

[0057] The "width direction" described in the application refers to the X direction in the drawings. Figure 1

[0058] The "thickness direction" described in the application refers to the Z direction in the drawings. Figure 1

[0059] In the application, "parallel" means substantially parallel, but does not exclude errors caused by processes or equipment. ​​​

[0060] In the present invention, "overlap" means basically overlapping, but does not exclude errors caused by processes or equipment.

[0061] The counting device of the present invention comprises a housing, an elastic pushing element, a digital display panel and an upper cover. The following is a detailed description of each part of the counting device of the present invention.

[0062] <Elastic Pushing Element>

[0063] The elastic pushing element of the present invention includes a pawl, a pawl driving portion, and an elastic reset portion. In some embodiments, the elastic pushing element further includes one or more of a limiting portion and an external force pressing portion. The elastic pushing element of the present invention can be an integrally formed structure.

[0064] pawl

[0065] The pawl of the present invention is configured to drive the inner display disc to rotate. The pawl of the present invention can engage with the inner disc ratchet of the inner display disc, thereby driving the inner display disc to rotate.

[0066] Pawl drive unit

[0067] The pawl drive unit of the present invention is connected to the pawl. The pawl drive unit is configured to drive the pawl to move. The end of the pawl drive unit away from the pawl can be a free end. The pawl drive unit can be a rod-shaped structure, for example, a drive rod.

[0068] The pawl driving portion may include a driving portion and a connecting portion. One end of the connecting portion is connected to the pawl. The other end of the connecting portion is connected to the driving portion. The other end of the driving portion may be a free end. The driving portion may be a vertical rod-shaped structure.

[0069] The connecting portion may include a vertical section and a curved section. One end of the vertical section is connected to the pawl. The other end of the vertical section is connected to the curved section. The other end of the curved section is connected to the driving portion. The vertical section may be parallel to the driving portion. This allows the pawl to move along the length of the counting device. The vertical section may be a rod-shaped structure. The curvature of the curved section may match the curvature of the inner disc ratchet. This allows the center of the driving portion to coincide with the center of the inner disc ratchet and allows the pawl to engage with the inner disc ratchet. The curved section may be a rod-shaped structure.

[0070] Elastic reset part

[0071] The elastic reset portion of the present invention is connected to the pawl drive portion. The elastic reset portion is used to provide a rebound force for the pawl drive portion to reset the pawl drive portion. In some embodiments, the elastic reset portion is connected to the middle portion of the pawl drive portion.

[0072] The projection of the elastic reset part on the horizontal plane can be an arc; preferably a minor arc. The two endpoints of any chord of a circle divide the circle into two arcs, and the arc with a central angle less than 180° is called a minor arc. This makes it easy to produce elastic deformation and can provide a rebound force to reset the pawl drive part. The elastic reset part can be divided into two parts, one part of which is arranged on one side of the pawl drive part, and the other part is arranged on the other side corresponding to the pawl drive part. Preferably, the elastic reset part is an integrally molded structure. The integrally molded structure enables the elastic reset part to have better rebound force. The middle part of the elastic reset part is connected to the pawl drive part. The elastic reset part can be formed of a material with a certain elastic deformation, capable of providing rebound force, and good fatigue resistance, for example, it can be formed of polyoxymethylene (POM).

[0073] Limiting part

[0074] The limiting portion of the present invention is disposed at an end of the pawl driving unit distal from the pawl. Specifically, the limiting portion is disposed at the free end of the driving portion of the pawl driving unit. The limiting portion can be disposed within the third guide slot (the groove formed between the first guide plate and the second guide plate) of the upper cover, thereby limiting the movement direction of the pawl driving unit, allowing the pawl driving unit to move along the length of the counting device.

[0075] The plane on which the limiting portion is located may be perpendicular to the plane on which the elastic reset portion is located. According to one embodiment of the present invention, the limiting portion protrudes in a direction perpendicular to the plane on which the elastic reset portion is located. The structure of the limiting portion is not limited in the present invention. For example, the limiting component may be a protrusion formed on the end of the pawl driving portion away from the pawl. Specifically, the limiting component may be a protrusion formed on the free end of the driving portion of the pawl driving portion.

[0076] External force pressing part

[0077] The external force pressing portion of the present invention is arranged at an end of the pawl driving portion away from the pawl. Specifically, the external force pressing portion is arranged at the free end of the driving portion of the pawl driving portion. The external force pressing portion is configured to receive external force and transmit the external force to the pawl driving portion.

[0078] The plane where the external force pressing portion is located may be perpendicular to the plane where the elastic restoring portion is located. According to one embodiment of the present invention, the external force pressing portion protrudes along a direction perpendicular to the plane where the elastic restoring portion is located.

[0079] The pressing part is opposite to the protrusion of the limiting part. The pressing part and the limiting part can be arranged on the opposite sides of the pawl driving part. The pressing part can be a protrusion formed on the end of the pawl driving part away from the pawl. Specifically, the pressing part can be a protrusion formed on the free end of the driving part of the pawl driving part. The protrusion can have a plane perpendicular to the plane where the elastic reset part is located. In this way, the external force can be uniformly applied to the pressing part, and the external force can be applied to the pressing part along the length direction of the counting device.

[0080] <Shell>

[0081] The shell of the present application comprises a shell body, a first accommodating part, a second accommodating part, a first guide slot and a second guide slot are arranged in the shell body. The shell of the present application can be an integral structure.

[0082] Shell body

[0083] The shape of the shell body is not limited in the present application. In some embodiments, the projection of the outer contour of the shell body on the horizontal plane is approximately rectangular.

[0084] The shell body of the present application can be provided with connecting parts. The connecting parts are arranged to fixedly connect the shell and the upper cover. The connecting parts can be buckles and / or clamping grooves. In some embodiments, the connecting parts are buckles. In other embodiments, the connecting parts are clamping grooves. The connecting parts can be arranged in multiple numbers, for example, 4, 6 or 8. In some embodiments, the connecting parts are evenly divided into two groups, and the two groups of connecting parts are arranged near the two long edges of the shell body, respectively. Preferably, the connecting parts are dispersedly arranged along the length direction of the shell body.

[0085] The shell body of the present application can also be provided with upper cover positioning parts. The upper cover positioning parts are arranged to preliminarily position the position of the upper cover during the process of automatic assembly. In this way, the fixing device on the upper cover can be matched with the position of the connecting parts on the shell body, and then the upper cover and the shell are fixedly connected. The upper cover positioning parts can be arranged in multiple numbers, preferably two. In this way, the positioning can be facilitated, and the accuracy of the positioning can be ensured. In some embodiments, the upper cover positioning parts are arranged on the two sides of the second guide slot, respectively. According to an embodiment of the present application, the upper cover positioning parts are hollow cylinders and protrude outward from the surface of the shell body.

[0086] First accommodation portion

[0087] The first accommodating portion is disposed at the upper portion of the housing body. The first accommodating portion is used to accommodate the digital display disk. The projection of the first accommodating portion on a horizontal plane is circular or approximately circular. The first accommodating portion can be formed by enclosing a first accommodating portion boss. The first accommodating portion boss can be a continuous boss or a combination of multiple discrete bosses. The outer disk panel for displaying the outer disk is disposed on the first accommodating portion boss. This allows the outer disk to be positioned higher than the inner disk. The first accommodating portion boss is provided with at least one opening. The opening is disposed along the width direction of the counting device. The opening is disposed near the bottom of the first accommodating portion boss. This allows the first accommodating portion and the second accommodating portion to communicate.

[0088] An inner tray positioning member is disposed within the first accommodating portion. This member secures the inner display tray in place while also securing the upper cover. Preferably, the inner tray positioning member is disposed in the middle of the first accommodating portion. More preferably, the inner tray positioning member is disposed at the center of the first accommodating portion. The inner tray positioning member may be a hollow cylinder, projecting outward from the surface of the outer shell.

[0089] The first receiving portion boss of the present invention may be provided with a first receiving portion partition. The first receiving portion partition is configured to define the position for displaying the outer disk. In some embodiments, the first receiving portion partition is disposed near the outer edge of the first receiving portion boss. According to one embodiment of the present invention, the first receiving portion partition comprises a plurality of partitions, which are dispersedly disposed on the first receiving portion boss. The space enclosed by the first receiving portion partition may have a circular or approximately circular projection on a horizontal plane.

[0090] A housing boss may be disposed within the first accommodating portion. This boss is configured to lift the outer disc selector teeth of the inner display disc, thereby engaging the outer disc selector teeth with the transmission teeth of the outer display disc. According to one embodiment of the present invention, the projection of the housing boss on a horizontal plane is approximately triangular, with a smooth arc-shaped transition between adjacent sides. This reduces resistance and facilitates lifting the outer disc selector teeth.

[0091] A shortening rib may be provided within the first receiving portion. The shortening rib is shorter than a typical rib. The shortening rib does not contact the first receiving portion boss, but rather maintains a certain distance therefrom. This prevents the display outer disc from rotating.

[0092] The inner disc ratchet pawl is arranged in the first accommodating portion. The inner disc ratchet pawl is engaged with the inner disc ratchet wheel, thereby preventing the inner disc from rotating reversely. The inner disc ratchet pawl is connected with the housing body. The inner disc ratchet pawl can be arranged as one or multiple. At least a part of the outer disc ratchet pawl is arranged in the space enclosed by the first accommodating partition. The outer disc ratchet pawl is arranged to limit the rotating direction of the outer disc ratchet wheel. The outer disc ratchet pawl can be arranged as one or multiple. According to one embodiment of the present application, the outer disc ratchet pawl is arranged as two, and the two outer disc ratchet pawls are arranged oppositely.

[0093] Second accommodating portion

[0094] The second accommodating portion is used for accommodating the elastic reset portion. The length of the second accommodating portion can be equal to the length of the elastic reset portion in the length direction of the counting device. The width of the second accommodating portion is slightly larger than the width of the elastic reset portion. In this way, space is provided for the elastic reset portion to elastically deform.

[0095] The second accommodating portion can be enclosed by the limiting member and the second accommodating portion baffle. The second accommodating portion is arranged below the first accommodating portion.

[0096] The limiting member is arranged as at least two groups, which are arranged at the two ends of the opening of the first accommodating portion boss. One end of the limiting member is connected with the first accommodating portion boss, and the other end is a free end. The limiting member extends along the width direction of the counting device.

[0097] In some embodiments, the limiting member comprises a connecting section and a limiting section. The connecting section is arranged along the width direction of the counting device. One end of the connecting section is connected with the opening end of the first accommodating portion boss, and the other end is connected with the limiting section. The width of the connecting section close to the opening end of the first accommodating portion boss is larger than the width of the connecting section close to the limiting section. The connecting section can be a rod-shaped structure. The limiting section is a protrusion formed at the end of the connecting section away from the first accommodating portion boss. The protrusion can be a cuboid structure, a square structure or a spherical structure. The connecting section and the limiting section can be an integrally formed structure.

[0098] first guide groove and second guide groove

[0099] The first guide groove of the present application is the gap between the free ends of the limiting members at the two ends of the opening of the first accommodating portion boss. The second guide groove of the present application is arranged below the opening of the first accommodating portion boss, and extends along the length direction of the counting device. The second guide groove cooperates with the first guide groove, thereby enabling the ratchet pawl driving portion to move along the length direction of the counting device.

[0100] In some embodiments, the symmetry axis of the second guide groove coincides with the symmetry axis of the first guide groove.

[0101] The second guide groove can be a groove formed on the shell body, or a groove body formed by a barrier component, which can be a barrier plate.

[0102] In certain embodiments, a groove is formed on the housing body below the opening of the first accommodating portion boss, and the groove is arranged along the length of the counting device. A barrier component is connected to the edge of at least a portion of the groove along the length of the counting device. The barrier components are provided in two groups, one of which is disposed on two opposing sides of the groove along the length of the counting device. The barrier components extend outward from the groove. The space formed between the two groups of barrier components and the groove together constitute a second guide groove. Preferably, the axis of symmetry of the groove coincides with the axis of symmetry of the first guide groove. The barrier component can be a barrier plate.

[0103] <Digital Display>

[0104] The digital display disk is placed in the first receiving portion. A ratchet is provided on the lower surface of the digital display disk, and the ratchet is configured to engage with the pawl. The digital display disk may include an inner display disk and an outer display disk.

[0105] Display internal disk

[0106] The display inner disk of the present invention comprises an inner disk panel, an inner disk ratchet and a driving component. The display inner disk can be an integrally formed structure.

[0107] The inner disk panel is circular or approximately circular. The upper surface of the inner disk panel may be provided with numbers. For example, the upper surface of the panel may be provided with the numbers 0 to 9. These numbers are evenly distributed along the circumference of the inner disk panel. A first positioning hole is provided in the center of the inner disk panel.

[0108] The lower surface of the inner disk can be provided with a connecting boss. The connecting boss surrounds the outer circumference of the inner disk ratchet. The connecting boss is connected to the drive component. The connecting boss protrudes from the lower surface of the inner disk panel. In some embodiments, the connecting boss is connected to a radial portion of the drive component. According to one embodiment of the present invention, the outer wall of the connecting boss is connected to a radial portion of the drive component. This serves to connect the inner disk panel to the drive component and also provides positioning. The center of the projection of the connecting boss onto the plane of the inner disk panel coincides with the center of the inner disk panel.

[0109] The inner disc ratchet wheel is connected to the lower surface of the inner disc panel. The inner disc ratchet wheel drives the inner disc panel to rotate. The center of the projection of the inner disc ratchet wheel on the plane where the inner disc panel is located coincides with the center of the inner disc panel. The projection of the inner disc ratchet wheel on the plane where the inner disc panel is located falls within the range of the projection of the connecting boss on the plane where the inner disc panel is located. The inner disc ratchet wheel has driving engagement teeth and stopping engagement teeth. The driving engagement teeth are engaged with the ratchet wheel. The stopping engagement teeth are engaged with the inner disc ratchet pawl.

[0110] The middle part of the inner disc ratchet wheel is provided with a second positioning hole. The second positioning hole is in communication with the first positioning hole. The projection of the first positioning hole on the plane where the inner disc panel is located coincides with the projection of the second positioning hole on the plane where the inner disc panel is located. The first positioning hole and the second positioning hole together position the inner disc. The first positioning hole and the second positioning hole are sleeved on the inner disc positioning member, so as to fix the inner disc ratchet wheel on the shell.

[0111] The inner disc ratchet wheel has teeth corresponding to the number of the numbers arranged on the inner disc panel. The teeth are uniformly distributed on the outer periphery of the ratchet wheel. Each tooth corresponds to a number. In this way, when the inner disc ratchet wheel is rotated, the inner disc ratchet wheel drives the numbers on the panel to rotate, and the numbers on the inner disc panel rotate one digit for each rotation of the inner disc ratchet wheel, thereby completing the counting of the unit digit.

[0112] The driving component of the present application is connected to the lower surface of the inner disc panel. The driving component is provided with an outer disc dial tooth. The lower surface of the driving component is provided with an inner disc boss. In some embodiments, the driving component is connected to the connecting boss. The outer disc dial tooth is arranged to dial the display outer disc rotating shaft. The inner disc boss is arranged to lift the outer disc dial tooth, so that the outer disc dial tooth is engaged with the display outer disc and drives the display outer disc to rotate. The position of the display outer disc outside the sleeve is higher than the position of the display inner disc. When the inner disc boss does not pass through the shell body boss, the outer disc dial tooth cannot be engaged with the display outer disc due to the lower position, and the display outer disc does not rotate. When the inner disc boss passes through the shell body boss, the shell body boss raises the inner disc boss, thereby raising the position of the outer disc dial tooth, and the outer disc dial tooth can be engaged with the display outer disc, thereby driving the display outer disc to rotate. In the preferred embodiment of the present application, at least a part of the surface of the inner disc boss away from the panel is a slope surface. This can reduce the resistance when contacting the shell body boss.

[0113] The driving component can include a radial part and a circumferential part. One end of the radial part is connected to the lower surface of the inner disc panel. One end of the circumferential part is connected to the other end of the radial part. The other end of the circumferential part is a free end. The circumferential part has a certain curvature. Preferably, the circle where the outer contour of the circumferential part is located and the circle formed by the outer contour of the inner disc panel constitute concentric circles. The diameter of the circle where the outer contour of the circumferential part is located is greater than the diameter of the circle formed by the outer contour of the inner disc panel. The outer side of the free end of the circumferential part is provided with an outer disc dial tooth.

[0114] According to one embodiment of the present invention, the inner disk boss includes a first portion formed by extending from the free end of the circumferential portion of the driving component toward the lower surface of the inner disk panel, and a second portion formed by extending from the first portion along the circumferential portion of the driving component. The surface of the first portion facing away from the inner disk panel is a sloped surface. The surface of the second portion facing away from the inner disk panel is partially sloped, while the remaining portion is flat. The sloped surface of the first portion is connected to the sloped surface of the second portion. The sloped surfaces of the first and second portions transition smoothly. The lowest point of the sloped surface of the first portion is at the same height as the highest point of the sloped surface of the second portion. Preferably, the projection of the first portion onto the plane of the panel is approximately rectangular. "Rectangular" includes the case where two adjacent sides are equal, i.e., a square. The projection of the second portion onto the plane of the panel is approximately trapezoidal. The base of the projection of the second portion onto the plane of the panel coincides with one side of the projection of the first portion onto the plane of the panel. This ensures that the inclined surface of the trapezoid first contacts the inclined surface of the projection during rotation, reducing resistance and facilitating the lifting of the inner disk boss.

[0115] Display external disk

[0116] The display outer disk of the present invention includes an outer disk panel and an outer disk ratchet. The display outer disk can be an integrally formed structure. The display outer disk can be arranged on the first receiving portion boss so that the height of the transmission teeth is higher than the height of the outer disk shifting teeth.

[0117] The outer disk panel of the present invention has a circular or approximately circular outline. A central portion of the outer disk panel defines an outer disk positioning hole for positioning the outer display disk. The outer display disk is positioned over the outer periphery of the inner display disk through the outer disk positioning hole, thereby securing the outer display disk in place. The center of the outer disk positioning hole can coincide with the center of the outer disk panel.

[0118] The upper surface of the outer disk panel is sequentially arranged with numbers from a minimum value to a maximum value. In some embodiments, these numbers are evenly distributed along the inner circumference of the outer disk panel. In other embodiments, the upper surface of the outer disk panel includes a blank portion and a digital display portion. The blank portion is not provided with numbers. These numbers are evenly distributed along the inner circumference of the outer disk panel in the digital display portion. This prevents the outer disk from rotating to the maximum value when the number displayed on the outer disk panel rotates to the minimum value, causing an erroneous count.

[0119] A notch is provided on the outer edge of the outer disk panel. The notch is recessed toward the center of the outer disk panel. The notch is used to determine the initial installation position of the display outer disk.

[0120] The outer disc ratchet is disposed on the lower surface of the outer disc panel. The outer disc ratchet is disposed around the outer disc positioning hole. In some embodiments, the projection of the outer disc ratchet onto the plane of the outer disc panel falls within the outer disc panel. Preferably, the center of the projection of the outer disc ratchet onto the plane of the outer disc panel coincides with the center of the outer disc panel. In other embodiments, the center of the projection of the outer disc ratchet onto the plane of the outer disc panel coincides with the center of the outer disc positioning hole. According to one embodiment of the present invention, the outer disc ratchet has a circular ring structure.

[0121] The outer disc ratchet has an inner ring portion. The inner ring portion may include a toothed sidewall and a smooth sidewall. According to one embodiment of the present invention, the central angle of the toothed sidewall is greater than 180°, and the central angle of the smooth sidewall is less than 180°.

[0122] Transmission teeth are provided on the toothed sidewalls, configured to drive the outer disc panel in forward rotation. The transmission teeth may be teeth that protrude toward the center of the outer disc ratchet. According to one embodiment of the present invention, the transmission teeth are asymmetrical trapezoidal teeth. The number of transmission teeth is the same as the number of numerals provided on the upper surface of the outer disc panel, with each transmission tooth corresponding to a numeral. Thus, each time the transmission teeth change position, a numeral on the outer disc panel changes sequentially.

[0123] The smooth sidewall is not provided with transmission teeth. At least a portion of the smooth sidewall corresponds to the area on the outer disc panel where the minimum number is provided. According to one embodiment of the present invention, the smooth sidewall corresponds to the area on the outer disc panel where the minimum number is provided and the blank area. This allows the outer disc panel to be locked in position when the number on the outer disc panel is rotated to the minimum value.

[0124] The outer disc ratchet also has an outer ring portion. Stop teeth are provided on the side walls of the outer ring portion, and the stop teeth are configured to prevent the outer disc panel from rotating in the opposite direction. The stop teeth may be teeth that protrude toward the outer ring of the outer disc ratchet. The inclination direction of the working tooth surface of the stop teeth is opposite to the inclination direction of the working tooth surface of the transmission teeth. According to one embodiment of the present invention, the stop teeth are arc-shaped triangular teeth. Each transmission tooth corresponds to a stop tooth, but the number of stop teeth is greater than the number of transmission teeth. The stop teeth may be evenly arranged on the side walls of the outer ring portion of the outer disc ratchet.

[0125] The lower surface of the outer disc ratchet can be provided with a locking protrusion. When the number displayed on the digital display disc is the minimum value, the locking protrusion is located on one side of the pawl driving component. Due to the obstruction of the pawl driving component, the rotation of the digital display disc is restricted, thereby locking the position of the digital display disc.

[0126] <Upper cover>

[0127] The upper cover of the present application comprises an upper cover body. A third guide slot is arranged on the upper cover body, which is arranged to cooperate with the second guide slot to enable the pawl driving component to move along the length direction of the counting device. An elastic pushing element pressing plate is arranged in the region of the upper cover body corresponding to the second accommodating portion, which is arranged to fix the position of the elastic pushing element along the thickness direction of the counting device. The upper cover is arranged to cover the shell. In some embodiments, one or more of an upper positioning column, a lower positioning column, a fixing device and a reinforcing rib can be further arranged in the upper cover body. The upper cover can be an integrally formed structure.

[0128] The projection of the upper cover body of the present application on the horizontal plane can be approximately rectangular. A display window can be arranged on the upper cover body. The display window is arranged to display the number recorded by the counting device. The display window can be arranged at the middle upper portion of the upper cover body. In some embodiments, the display window can be arranged at one side of the upper positioning column. Further, the display window can be substantially parallel to the upper positioning column.

[0129] The third guide slot of the present application is arranged at the lower portion of the upper cover body. The third guide slot is arranged along the length direction of the counting device. In some embodiments, the third guide slot is formed by a guide plate. The guide plate comprises a first guide plate and a second guide plate. The first guide plate and the second guide plate are arranged oppositely. Preferably, the first guide plate and the second guide plate are arranged in parallel. In some embodiments, the first guide plate and the second guide plate are mirror arranged with the center line of the upper cover body as the axis of symmetry. The third guide slot is formed between the first guide plate and the second guide plate. The limiting component of the ratchet pushing element is arranged in the third guide slot to limit the movement direction of the ratchet pushing element.

[0130] The elastic pushing element pressing plate can comprise an elastic pushing element longitudinal pressing plate and an elastic pushing element transverse pressing plate.

[0131] The elastic pushing element longitudinal pressing plate is arranged above the guide plate and along the length direction of the counting device. In some embodiments, the elastic pushing element longitudinal pressing plate comprises a first elastic pushing element longitudinal pressing plate and a second elastic pushing element longitudinal pressing plate. The first elastic pushing element longitudinal pressing plate and the second elastic pushing element longitudinal pressing plate are arranged oppositely and respectively at the two sides of the guide plate. Preferably, the first elastic pushing element longitudinal pressing plate and the second elastic pushing element longitudinal pressing plate are arranged in parallel. In some embodiments, the first elastic pushing element longitudinal pressing plate and the second elastic pushing element longitudinal pressing plate are mirror arranged with the center line of the upper cover body as the axis of symmetry.

[0132] The elastic pushing element transverse pressure plate is arranged above the guide plate. In some embodiments, the elastic pushing element transverse pressure plate is arranged near the lower end of the elastic pushing element longitudinal pressure plate. The elastic pushing element transverse pressure plate is arranged along the width direction of the counting device. In some embodiments, the elastic pushing element transverse pressure plate includes a first elastic pushing element transverse pressure plate and a second elastic pushing element transverse pressure plate. The first elastic pushing element transverse pressure plate and the second elastic pushing element transverse pressure plate are respectively arranged on both sides of the ratchet pushing element longitudinal pressure plate. Preferably, the first ratchet pushing element longitudinal pressure plate and the second ratchet pushing element longitudinal pressure plate are arranged horizontally. In some embodiments, the first elastic pushing element transverse pressure plate and the second elastic pushing element transverse pressure plate are mirror-imaged with the center line of the upper cover body as the axis of symmetry.

[0133] The upper positioning post of the present invention is arranged on the surface of the upper cover body, and is arranged in the upper part or the middle part of the upper cover body. The upper positioning post can extend into the inner disk positioning member, thereby defining the position of the upper cover and the shell. In some embodiments, the upper positioning post is arranged in a position slightly above the middle part of the upper cover body. The upper positioning post can be provided as one. In some embodiments, the upper positioning post is arranged near the center line of the upper cover body. The upper positioning post and the upper cover body can be an integrally molded structure. The projection of the upper positioning post on the plane where the upper cover body is located is a "cross" shape. This ensures strength and facilitates mold opening.

[0134] The lower positioning post of the present invention is disposed on the surface of the upper cover body and at the lower portion of the upper cover body. The lower positioning post can extend into the upper cover positioning member, thereby providing positioning and guidance during the automated assembly process. Multiple lower positioning posts can be provided, for example, two. The multiple lower positioning posts are respectively disposed on either side of the third guide slot.

[0135] The fixing device of the present invention is disposed on the surface of the upper cover body. The fixing device cooperates with the connecting component to securely connect the upper cover to the housing. The position of the fixing device matches the position of the connecting component of the housing. The fixing device can be a snap. Multiple fixing devices can be provided, for example, 6 or 8. The multiple fixing devices can be evenly divided into two groups. The two groups of fixing devices are respectively distributed along two edges of the length of the upper cover body.

[0136] The reinforcing ribs of the present invention are provided on the surface of the upper cover body. The reinforcing ribs are used to enhance the mechanical strength of the upper cover body. The reinforcing ribs and the upper cover body may be integrally formed. In certain embodiments, the reinforcing ribs are provided at the lower portion of the upper cover body.

[0137] <Inhalation drug delivery device>

[0138] The inhalation drug delivery device of the present invention comprises a drug delivery device body and the aforementioned counting device. The drug delivery device body can be those known in the art. The aforementioned counting device is used to control the drug delivery device body.

[0139] Example 1

[0140] like Figure 1 As shown, the counting device includes a housing 1, an elastic pushing element 2, a digital display disk and an upper cover 5. The digital display disk includes an inner display disk 3 and an outer display disk 4.

[0141] like Figure 2 and Figure 3 The elastic pushing element 2 includes a pawl 21, a pawl driving portion 22 and an elastic reset portion 23. The elastic pushing element 2 is an integrally formed structure.

[0142] The pawl 21 is engaged with the inner disc ratchet 32 ​​provided on the display inner disc 3, thereby driving the display inner disc 3 to rotate.

[0143] The pawl driving portion 22 includes a driving portion 221 and a connecting portion. The driving portion 221 is a vertical rod-shaped structure. The connecting portion includes a vertical section 2221 and a curved section 2222. The vertical section 2221 and the curved section 2222 are both rod-shaped structures. One end of the driving portion 221 is a free end. The other end of the driving portion 221 is connected to one end of the curved section 2222. The other end of the curved section 2222 is connected to one end of the vertical section 2221. The other end of the vertical section 2221 is connected to the pawl 21. The curvature of the curved section 2222 matches the curvature of the inner disc ratchet 32. The vertical section 2221 and the driving portion 221 are parallel to each other.

[0144] The elastic reset portion 23 is disposed in the middle of the driving portion 221. The horizontal projection of the elastic reset portion 23 is an inferior arc. The middle portion of the elastic reset portion 23 is connected to the middle portion of the driving portion 221. The elastic reset portion 23 provides a rebound force for the pawl driving portion 22, causing it to reset. In this embodiment, the elastic reset portion 23 is formed from polyoxymethylene (POM).

[0145] A limiting portion 24 is provided at the free end of the driving portion 221. The limiting portion 24 protrudes in a direction perpendicular to the plane where the elastic reset portion 23 is located.

[0146] The free end of the driving portion 221 is further provided with an external force pressing portion 25. The external force pressing portion 25 protrudes in a direction perpendicular to the plane of the elastic reset portion 23 and in the opposite direction of the protrusion of the limiting portion 24. The external force pressing portion 25 and the limiting portion 24 are respectively provided on both sides of the driving portion 221.

[0147] like Figure 4 and 5 As shown, the housing 1 includes a housing body 101, a first receiving portion boss 102, a first receiving portion partition 103, a limiting component 104, a second guide groove 105, a housing body boss 106, an inner disc ratchet pawl 107, and an outer disc ratchet pawl 108. The housing 1 is an integrally formed structure.

[0148] The projection of the outer contour of the housing body 101 on a horizontal plane is approximately rectangular.

[0149] A first housing boss 102 is positioned above the housing body 101. The space enclosed by the first housing boss 102 constitutes the first housing portion, which houses the digital display dial. The first housing portion, when projected horizontally, is circular or nearly circular. An opening is defined near the bottom of the first housing boss 102, extending along the width of the housing body 101.

[0150] An inner disk locator 109 is positioned at the center of the first accommodating portion. This hollow cylindrical member protrudes outward from the outer shell 101. This member is used to position the inner display disk 3 and, in turn, the upper cover 5. The centerline of this member coincides with the centerline of the pawl drive unit 22.

[0151] The inner disc ratchet pawl 107 is connected to the outer shell body 101 and is disposed in the first receiving portion. The inner disc ratchet pawl 107 limits the rotation direction of the display inner disc 3.

[0152] The first receiving portion partition 103 is disposed on the first receiving portion boss 102 and is disposed near the outer edge of the first receiving portion boss 102. The first receiving portion partition 103 is composed of a plurality of partitions, which are dispersedly disposed on the first receiving portion boss 102. The first receiving portion partition 103 defines the position for displaying the outer disk 4.

[0153] The first accommodating portion is provided with a shortening rib 112. This does not hinder the display outer disk 4 from rotating.

[0154] The housing body boss 106 is disposed in the space enclosed by the first accommodating portion boss 102. Figure 6 As shown, the projection of the housing body boss 106 on the horizontal plane is approximately triangular, and there is a smooth arc transition between two adjacent sides.

[0155] At least a portion of the outer disc ratchet pawl 108 is disposed within the space enclosed by the first receiving portion partition 103. Two outer disc ratchet pawls 108 are provided, and the two outer disc ratchet pawls 108 are disposed opposite each other. The outer disc ratchet pawls 108 define the rotation direction of the display outer disc.

[0156] The second accommodating portion (not shown) is arranged below the first accommodating portion. The second accommodating portion accommodates the elastic reset portion 23. Figure 10As shown, the length of the second accommodating portion is equal to the length of the elastic reset portion 23, based on the length of the counting device. The width of the second accommodating portion is slightly larger than the width of the elastic reset portion 23. This provides space for the elastic reset portion 23 to elastically deform. The second accommodating portion is formed by the limiting component 104 and the second accommodating portion baffle (not shown).

[0157] The limiting components 104 are provided in two groups, which are respectively provided at both ends of the opening of the first receiving portion boss 102. Figure 4 and 7 As shown, the limiting component 104 includes a connecting section and a limiting section. The connecting section is a rod-shaped structure. One end of the connecting section is connected to the first accommodating portion boss 102, and the connecting section is arranged along the width direction of the counting device. The other end of the connecting section is connected to the limiting section, and the other end of the limiting section is a free end. The width of the end of the connecting section connected to the first accommodating portion boss 102 is greater than the width of the other end of the connecting section. The limiting section is a protrusion formed at one end of the connecting section away from the first accommodating portion boss 102. The protrusion can be a rectangular parallelepiped structure, a cube structure or a spherical structure. There is a gap between the free ends of the limiting components 104 arranged at both ends of the opening, thereby forming a first guide groove. A portion of the pawl driving portion 22 located above the elastic reset portion 23 is arranged in the first guide groove.

[0158] like Figure 4 and Figure 8 As shown, a groove is provided on the shell body 101 below the opening of the first accommodating portion boss 102, and the groove is provided along the length direction of the counting device. The symmetry axis of the groove coincides with the symmetry axis of the first guide groove. A barrier component is connected to the edge of at least a portion of the groove along the length direction of the counting device. The barrier components are provided in two groups, which are respectively provided on two opposite sides of the groove along the length direction of the counting device. The barrier components are provided along the edge of the groove and extend to the outside of the groove. The space formed between the two groups of barrier components and the groove together constitute the second guide groove 105. A portion of the pawl driving portion 22 located below the elastic reset portion 23 is provided in the second guide groove 105. The first guide groove and the second guide groove 105 cooperate with each other, so that the pawl driving portion 22 moves along the length direction of the counting device.

[0159] like Figure 4 As shown, the connecting components 110 are dispersed along the length of the housing body 101 and are respectively disposed near the two long sides of the housing body 101. The connecting components 110 are used to connect and secure the upper cover 5. The connecting components 110 can be buckles or slots. There are multiple connecting components 110, for example, six.

[0160] The upper cover positioning member 111 is provided at the lower portion of the housing body 101. There can be two upper cover positioning members 111. The upper cover positioning members 111 are provided on both sides of the second guide groove 105. Figure 9 As shown, the upper cover positioning member 111 is a hollow cylinder, protruding outward from the surface of the housing body 101. The upper cover positioning member 111 is used to position the upper cover 5.

[0161] like Figures 11-17 As shown, the inner disk 3 includes an inner disk panel 31, an inner disk ratchet 32 ​​and a driving component 33. The inner disk 3 is an integrally formed structure.

[0162] Ten numbers, 0 to 9, are arranged on the upper surface of the inner disk panel 31. The inner disk panel 31 is circular in shape. The numbers 0 to 9 are evenly spaced along the circumference of the inner disk panel 31. A first positioning hole 311 is formed in the center of the inner disk panel 31.

[0163] The inner disc ratchet 32 ​​is connected to the lower surface of the inner disc panel 31. Figure 16 As shown, the inner disc ratchet 32 ​​has a driving engagement tooth position 341 and a stopping engagement tooth position 342. The driving engagement tooth position 341 engages with the pawl 21. The stopping engagement tooth position 342 engages with the inner disc ratchet check pawl 107. The center of the projection of the inner disc ratchet 32 ​​on the plane of the inner disc panel 31 coincides with the center of the inner disc panel 31, and the projection of the inner disc ratchet 32 ​​on the plane of the inner disc panel 31 falls within the range of the inner disc panel 31. A second positioning hole 321 is defined in the center of the inner disc ratchet 32. The second positioning hole 321 can communicate with the first positioning hole 311. The projection of the second positioning hole 321 on the plane of the inner disc panel 31 coincides with the projection of the first positioning hole 311 on the plane of the inner disc panel 31.

[0164] like Figure 15 As shown, the inner disk 3 is mounted on the outer surface of the inner disk positioning member 109 through the first positioning hole 311 and the second positioning hole 321, and is placed in the first receiving portion. The driving engagement teeth 341 are evenly distributed around the outer circumference of the inner disk ratchet 32, and each driving engagement tooth 341 corresponds to a number on the inner disk panel 31.

[0165] like Figure 11 As shown, a connecting boss 312 is provided on the lower surface of the inner disk panel 31. The connecting boss 312 protrudes from the lower surface of the inner disk panel 31. The connecting boss 312 surrounds the outer circumference of the inner disk ratchet 32. The center of the projection of the connecting boss 312 on the plane of the inner disk panel 31 coincides with the center of the inner disk panel 31.

[0166] like Figure 12As shown, the driving component 33 comprises a radial part 331 and a circumferential part 332. One end of the radial part 331 is connected with the connecting boss 312. The other end of the radial part 331 is connected with one end of the circumferential part 332. The axis of symmetry of the projection of the radial part 331 on the plane where the inner disc panel 31 is located passes through the center of the inner disc panel 31. The other end of the circumferential part 332 is a free end. The circumferential part 332 has a certain curvature. The circle where the outer contour of the circumferential part 332 is located and the circle formed by the outer contour of the inner disc panel 31 constitute concentric circles; the diameter of the circle where the outer contour of the circumferential part 332 is located is greater than the diameter of the circle formed by the outer contour of the inner disc panel 31.

[0167] As shown, Figure 13 the outer side of the free end of the circumferential part 332 is provided with an outer disc ratchet 333. The outer disc ratchet 333 is engaged with the transmission teeth 421 of the display outer disc 4, thereby driving the display outer disc 4 to rotate.

[0168] As shown, Figure 14 the lower surface of the free end of the circumferential part 332 is provided with an inner disc boss 334. The inner disc boss 334 is used to lift the outer disc ratchet 333, so that the outer disc ratchet 333 is engaged with the transmission teeth 421.

[0169] As shown, Figure 12 the inner disc boss 334 comprises a first part 3341 extending from the free end of the circumferential part 332 to the direction of the lower surface of the inner disc panel 31 and a second part 3342 extending from the first part 3341 to the direction of the circumferential part 332. The projection of the first part 3341 on the plane where the inner disc panel 31 is located is approximately rectangular. The projection of the second part 3342 on the plane where the inner disc panel 31 is located is approximately trapezoidal. The bottom edge of the projection of the second part 3342 on the plane where the inner disc panel 31 is located coincides with one side of the projection of the first part 3341 on the plane where the inner disc panel 31 is located. The surface of the first part 3341 away from the inner disc panel 31 is a slope surface. Part of the surface of the second part 3342 away from the inner disc panel 31 is a slope surface, and the other part is a flat surface. The slope surface of the first part 3341 is connected with the slope surface of the second part 3342, and the transition is smooth. The lowest point of the slope surface of the first part 3341 is consistent with the highest point of the slope surface of the second part 3342 in height.

[0170] As shown, Figures 18-20 the display outer disc 4 comprises an outer disc panel 41 and an outer disc ratchet 42. The display outer disc 4 is a one-piece structure.

[0171] The outer dial panel 41 is circular in shape. The outer dial panel 41 is provided with an outer dial positioning hole 412 in the middle. The outer dial positioning hole 412 is fitted around the outer periphery of the inner dial 3. The display outer dial 4 is arranged on the first accommodating portion boss 102 and within the range defined by the first accommodating portion partition 103. This fixes the position of the display outer dial 4 and makes the position of the outer dial ratchet teeth 333 lower than the position of the transmission teeth 421 in the display outer dial 4. The upper surface of the outer dial panel 41 comprises a blank portion and a numerical display portion. The blank portion is not provided with numbers. The numerical display portion is provided with numbers from the tens place and above. These numbers are sequentially and evenly distributed in the numerical display portion along the inner periphery of the outer dial panel 41 from the smallest number to the largest number. The outer edge of the outer dial panel 41 is provided with a notch 411. The notch 411 is used to determine the initial installation position of the display outer dial 4.

[0172] The outer dial ratchet 42 is arranged on the lower surface of the outer dial panel 41. The outer dial ratchet 42 is arranged around the outer dial positioning hole 412. The center of the projection of the outer dial ratchet 42 on the plane of the outer dial panel 41 coincides with the center of the outer dial panel 41, and the projection of the outer dial ratchet 42 on the plane of the outer dial panel 41 falls within the range of the outer dial panel 41.

[0173] The outer dial ratchet 42 has an inner portion comprising a toothed side wall and a smooth side wall. The central angle of the toothed side wall is greater than 180°, and the central angle of the smooth side wall is less than 180°. The toothed side wall is provided with transmission teeth 421; the smooth side wall has a smooth surface and is not provided with transmission teeth 421. The transmission teeth 421 drive the outer dial panel 41 to rotate in the forward direction. The transmission teeth 421 are teeth protruding towards the center of the outer dial ratchet 42. The area of the smooth side wall of the inner portion of the outer dial ratchet 42 corresponds to the area of the smallest number on the upper surface of the outer dial panel 41 and the area of the blank portion.

[0174] The outer dial ratchet 42 also has an outer portion, and all the side walls of the outer portion are uniformly provided with stop teeth 422. The stop teeth 422 engage with the outer dial ratchet pawl 108 to prevent the outer dial panel 41 from rotating in the reverse direction. The stop teeth 422 are in the opposite direction to the transmission teeth 421. The stop teeth 422 are teeth protruding towards the outer periphery of the outer dial ratchet 42. Each transmission tooth 421 corresponds to one stop tooth 422, but the number of stop teeth 422 is greater than the number of transmission teeth 421.

[0175] The transmission teeth 421 are asymmetric trapezoidal teeth, and the stop teeth 422 are circular arc triangular teeth; the inclined directions of the working tooth surfaces of the two are opposite.

[0176] The lower surface of the outer dial ratchet 42 is provided with a locking protrusion 423. When the number displayed by the number display dial is the smallest, the locking protrusion 423 is located on one side of the ratchet drive portion 22, and the rotation of the number display dial is limited due to the blocking of the ratchet drive portion 22, thereby locking the position of the number display dial.

[0177] like Figures 23-25 As shown, the upper cover 5 includes an upper cover body 51. A guide plate, a longitudinal pressure plate for the elastic push element, a transverse pressure plate for the elastic push element, an upper positioning post 55, a lower positioning post 56, a fixing device 57, a display window 58, and a reinforcing rib 59 are provided on the same side surface of the upper cover body 51. The upper cover 5 is an integrally molded structure.

[0178] The projection of the upper cover body 51 on the horizontal plane is approximately rectangular. The guide plate is arranged on the surface of the upper cover body 51. The guide plate is arranged at the lower part of the upper cover body 51 and is arranged along the length direction of the counting device.

[0179] The guide plates include a first guide plate 521 and a second guide plate 522. The first and second guide plates 521, 522 are arranged parallel to and opposite each other. The first and second guide plates 521, 522 are mirror images of each other about the centerline of the upper cover body 51. A lower upper cover positioning groove 523 is formed between the first and second guide plates 521, 522. The position limiting portion 24 is positioned within the lower upper cover positioning groove 523, thereby limiting the movement of the pawl driving portion 22 along the length of the counting device.

[0180] The longitudinal and transverse elastic pressure plates are located on the surface of the upper cover body 51 corresponding to the second receiving portion. The longitudinal elastic pressure plate is located above the guide plate and along the length of the counting device. The transverse elastic pressure plate extends along the width of the counting device and is located near the lower end of the longitudinal elastic pressure plate. The transverse elastic pressure plate and longitudinal elastic pressure plate secure the position of the elastic pushing element 2 along the thickness of the counting device.

[0181] The elastic pusher longitudinal pressure plate includes a first elastic pusher longitudinal pressure plate 531 and a second elastic pusher longitudinal pressure plate 532. The first elastic pusher longitudinal pressure plate 531 and the second elastic pusher longitudinal pressure plate 532 are arranged parallel to and opposite to each other. The first elastic pusher longitudinal pressure plate 531 and the second elastic pusher longitudinal pressure plate 532 are respectively arranged on either side of the guide plate. The first elastic pusher longitudinal pressure plate 531 and the second elastic pusher longitudinal pressure plate 532 are mirror images arranged with the centerline of the upper cover body 51 as the axis of symmetry.

[0182] The elastic lateral pressure plate includes a first elastic lateral pressure plate 541 and a second elastic lateral pressure plate 542. The first and second elastic lateral pressure plates 541 and 542 are located on either side of the elastic longitudinal pressure plate. The first and second elastic lateral pressure plates 541 and 542 are mirror images of each other with the centerline of the upper cover body 51 as the axis of symmetry.

[0183] The upper positioning column 55 is arranged on the surface of the upper cover body 51. The upper positioning column 55 matches the position of the inner disc positioning member 109 and can extend into the inner disc positioning member 109. The projection of the upper positioning column 55 on the plane where the upper cover body 51 is located is a "cross" shape.

[0184] The lower positioning column 56 is arranged on the surface of the upper cover body 51. The lower positioning column 56 is arranged at the lower part of the upper cover body 51. The lower positioning column 56 can be arranged as two, which are arranged on both sides of the guide plate respectively.

[0185] The fixing device 57 is arranged on the surface of the upper cover body 51. The fixing device 57 matches the connecting member 110, thereby connecting and fixing the shell 1 and the upper cover 5. The fixing device 57 can be a buckle or a clamping groove. The fixing device 57 can be equal in number to the connecting member 110, for example, six. The fixing device 57 is arranged at a position matching the position of the connecting member 110.

[0186] In the automatic assembly process, the initial position of the upper cover 5 is first fixed by the lower positioning column 56, and then the upper cover 5 is relatively fixed with the shell 1 by the upper positioning column 55 and the inner disc positioning member 109, so that the positions of the fixing device 57 and the connecting member 110 correspond, and the upper cover 5 and the shell 1 are completely connected and fixed by the connecting member 110.

[0187] The display window 58 is arranged on the upper cover body 51. The display window 58 is arranged to display the value recorded by the counting device. The display window 58 is arranged at the middle upper part of the upper cover body 51. The display window 58 is arranged on one side of the upper positioning column 55 and is basically parallel to the upper positioning column 55.

[0188] The reinforcing rib 59 is arranged on the surface of the upper cover body 51. The reinforcing rib 59 strengthens the mechanical strength of the upper cover body 51. The reinforcing rib 59 is arranged at the lower part of the upper cover body 51.

[0189] During use, an external force drives the pawl driving unit 22, causing the pawl 21 to rotate the inner display disk 3. Simultaneously, the elastic return unit 23 elastically deforms under the action of the pawl driving unit 22. When the external force acting on the pawl driving unit 22 is removed, the elastic return unit 23 returns to its unstressed state, simultaneously driving the pawl driving unit 22 back to its unstressed position. This repeated activation of the pawl driving unit 22 completes the counting of the inner display disk 3. During this process, because the outer display disk 4 is positioned higher than the inner display disk 3, the outer disk shifting teeth 333 of the inner display disk 3 cannot engage with the transmission teeth 421 of the outer display disk 3. When the value displayed on the inner display disk 3 in the display window 58 reaches its minimum, the inner disk boss 334 is lifted by the housing boss 106, raising the outer disk shifting teeth 333. This causes the outer disk shifting teeth 333 to engage with the transmission teeth 421, completing the transmission from the inner display disk 3 to the outer display disk 4. When the value displayed on the outer disk 4 in the display window 58 decreases to the minimum, because the outer disk ratchet 42 has a smooth inner portion, even if the inner disk boss 334 is lifted by the housing body boss 106, raising the position of the outer disk shifting tooth 333 and aligning the outer disk shifting tooth 333 with the smooth inner portion, the outer disk ratchet 42 cannot be driven to rotate, thus preventing excessive counting. When the value displayed on the display window 58 reaches the minimum, an external force drives the pawl drive unit 22 again. At this time, the outer disk shifting tooth 333 of the inner disk 3 meshes with the last transmission tooth 421 of the outer disk 4, integrating the inner disk 3 and the outer disk 4. The locking protrusion 423 rotates to one side of the pawl drive unit 2. Due to the obstruction of the pawl drive unit 22, the rotation of the outer disk 4 is restricted, thereby locking the position of the entire digital display.

[0190] The present invention is not limited to the above-mentioned embodiments. Any modification, improvement, or substitution that can be conceived by those skilled in the art without departing from the essential content of the present invention shall fall within the scope of the present invention.

Claims

1. A counting device, characterized in that: The counting device comprises a housing, an elastic pushing element, a digital display disk and an upper cover; The elastic pushing element includes a pawl, a pawl driving portion, and an elastic reset portion; the pawl is configured to push the digital display disk to rotate; the pawl driving portion is connected to the pawl and configured to drive the pawl to move; the elastic reset portion is connected to the pawl driving portion and is configured to provide a rebound force for the pawl driving portion to reset the pawl driving portion; The shell body includes a shell body, wherein a first accommodating portion, a second accommodating portion, a first guide groove and a second guide groove are provided in the shell body; the first accommodating portion is provided at the upper portion of the shell body, and is configured to accommodate the digital display disk; the second accommodating portion is provided below the first accommodating portion, and is configured to accommodate the elastic reset portion and provide space for the elastic reset portion to be elastically deformed; the first guide groove is provided at the top of the second accommodating portion, and is configured to connect the first accommodating portion and the second accommodating portion; the second guide groove is provided below the first guide groove; a part of the pawl driving portion is provided in the first guide groove, and a part of the pawl driving portion is provided in the second guide groove, so that the pawl driving portion moves along the length direction of the counting device; The digital display disk is arranged in the first accommodating portion, and a ratchet is arranged on the lower surface of the digital display disk, and the ratchet is arranged to be able to engage with the pawl; The upper cover includes an upper cover body, wherein a third guide groove is provided in the upper cover body, wherein the third guide groove is configured to cooperate with the second guide groove so that the pawl driving portion moves along the length direction of the counting device; an elastic pushing element pressure plate is provided in the upper cover body in an area corresponding to the second accommodating portion, wherein the elastic pushing element pressure plate is configured to limit the position of the elastic pushing element in the thickness direction of the counting device; and the upper cover is configured to cover the housing; The projection of the elastic reset portion on the horizontal plane is a minor arc, and the middle portion of the elastic reset portion is connected to the pawl driving portion; The pawl driving portion includes a driving portion and a connecting portion; the driving portion is a vertical rod-shaped structure; the connecting portion includes a vertical section and a curved section, one end of the curved section is connected to one end of the driving portion, the other end of the curved section is connected to one end of the vertical section, and the other end of the vertical section is connected to the pawl; The other end of the driving portion is a free end, and a limiting portion is provided on the free end of the driving portion, and the limiting portion can be accommodated in the third guide groove; A guide plate is provided in the upper cover body, and the guide plate includes a first guide plate and a second guide plate, the first guide plate and the second guide plate are arranged opposite to each other, and a third guide groove is formed between the first guide plate and the second guide plate; The elastic pushing element pressure plate includes a longitudinal pressure plate of the elastic pushing element and a transverse pressure plate of the elastic pushing element; the longitudinal pressure plate of the elastic pushing element is arranged above the guide plate and along the length direction of the counting device; the transverse pressure plate of the elastic pushing element is arranged above the guide plate and near the lower end portion of the longitudinal pressure plate of the elastic pushing element, and the transverse pressure plate of the elastic pushing element is arranged along the width direction of the counting device.

2. The counting device according to claim 1, characterized in that The housing body is provided with a first accommodating portion boss, the first accommodating portion boss defines the position of the first accommodating portion, and an opening is provided near the bottom of the first accommodating portion boss; The second accommodating portion is formed by a limiting component and a second accommodating portion baffle; the limiting component is provided in at least two groups, which are respectively provided at both ends of the opening; one end of the limiting component is connected to the first accommodating portion boss, the limiting component extends along the width direction of the counting device, and the other end of the limiting component is a free end; a gap is formed between the free ends of the limiting components provided at both ends of the opening, thereby forming a first guide groove; Based on the length direction of the counting device, the length of the second accommodating portion is equal to the length of the elastic reset portion; the width of the second accommodating portion is slightly larger than the width of the elastic reset portion, thereby providing space for the elastic reset portion to undergo elastic deformation.

3. The counting device according to any one of claims 1 to 2, characterized in that: The digital display disk includes an inner display disk and an outer display disk; The display inner disk includes an inner disk panel, an inner disk ratchet, and a driving component; the inner disk ratchet is arranged on the lower surface of the inner disk panel and meshes with the pawl; the driving component is connected to the lower surface of the inner disk panel, the driving component is provided with outer disk shifting teeth, and the lower surface of the driving component is provided with an inner disk boss; The outer display disk is sleeved outside the inner display disk, and includes an outer disk panel and an outer disk ratchet; the outer disk ratchet is disposed on the lower surface of the outer disk panel and is configured to engage with the outer disk shift teeth; the outer display disk is disposed on the first accommodating portion boss, so that the height of the outer display disk is higher than that of the inner display disk, thereby preventing the outer disk shift teeth and the outer disk ratchet from contacting each other; The first accommodating portion is provided with a shell body boss, and the shell body boss is configured to lift the outer disk shifting teeth when it contacts the inner disk boss, so that the outer disk shifting teeth are engaged with the outer disk ratchet, and then the outer disk shifting teeth drive the outer disk ratchet to rotate.

4. The counting device according to claim 3, characterized in that: The lower surface of the inner disk panel is provided with a connecting boss, and the connecting boss is provided on the outer periphery of the inner disk ratchet; The driving component includes a radial portion and a circumferential portion; one end of the radial portion is connected to the connecting boss, and the other end of the radial portion is connected to one end of the circumferential portion, and the other end of the circumferential portion is a free end, the outer side of which is provided with an outer disk shifting tooth; the inner disk boss is provided on the lower surface of the free end of the circumferential portion; The inner disk boss includes a first portion formed by extending the free end of the circumferential portion of the driving component toward the lower surface of the inner disk panel and a second portion formed by extending the first portion along the circumferential portion of the driving component; The surface of the first portion away from the inner disk panel is a sloped surface; A portion of the surface of the second portion away from the inner disk panel is a sloped surface, and the other portion is a flat surface; the sloped surface of the first portion is connected to the sloped surface of the second portion, and the lowest point of the sloped surface of the first portion is at the same height as the highest point of the sloped surface of the second portion; The projection of the housing body boss on the horizontal plane is approximately triangular, with a smooth arc transition between two adjacent sides.

5. The counting device according to claim 3, characterized in that A locking protrusion is provided on the lower surface of the outer disk ratchet; when the number displayed on the digital display disk is the minimum value, the locking protrusion rotates to one side of the pawl driving part. Due to the obstruction of the pawl driving part, the rotation of the digital display disk is restricted, thereby locking the position of the digital display disk.

6. The counting device according to claim 3, characterized in that The outer shell body is provided with an inner disk ratchet check pawl; the inner disk ratchet check pawl is configured to engage with the inner disk ratchet, thereby limiting the rotation direction of the display inner disk.

7. The counting device according to claim 3, characterized in that The outer disc ratchet check pawl is provided on the housing body; The outer disc ratchet has an inner ring portion and an outer ring portion; The inner ring portion is provided with transmission teeth, and the transmission teeth are arranged to mesh with the outer disc shifting teeth; The outer ring portion is provided with a stop tooth; the stop tooth is configured to engage with the outer disc ratchet check pawl to limit the rotation direction of the outer display disc; The outer ring portion includes a toothed side wall and a smooth side wall; the toothed side wall is provided with transmission teeth, and the smooth side wall is not provided with transmission teeth.

8. An inhalation drug delivery device, characterized in that: A counting device comprising the counting device according to any one of claims 1 to 7.

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