Coil device for a strip and dispenser of medicaments

Abstract

The present disclosure discloses a winding device for a material tape, comprising: a driving component comprising a driving shaft, a first shoulder portion with a first inclined surface being arranged around the driving shaft, the driving component being configured to be rotatable in a rotation direction; a guide member being mounted on the driving shaft and having a second inclined surface cooperating with the first inclined surface of the first shoulder portion; a material collecting wheel being non-rotatably connected with the guide member; an elastic body being received between the guide member and the material collecting wheel to apply a pre-load to the guide member, wherein the winding device is configured such that the material collecting wheel is rotatable in the rotation direction by the driving component, and the material collecting wheel is further rotatable relative to the driving component when a force acting on the material collecting wheel via the material tape is greater than a predetermined value. The present disclosure also discloses a medicament dispenser comprising the winding device for a material tape.

Description

Technical Field

[0001] This disclosure relates to a winding device, and more particularly to a winding device for a strip and a reagent dispenser including the winding device for the strip. Background Technology

[0002] In existing drug dispensers, the winding of the feed strip, such as the drug strip, is a crucial process. (Reference) Figure 1 Existing strip winding devices typically include a winding shaft 10 and a take-up roller 20 mounted on the winding shaft 10. The winding shaft 10 can be connected to a power source through a transmission mechanism, so that it can rotate under the drive of the power source (such as a manual power source or a motor). At the same time, the winding shaft 10 will drive the take-up roller 20 to rotate, thereby winding the strip 30 onto the take-up roller 20.

[0003] The take-up roller typically rotates at a fixed speed along the rotation direction R, the same as or with a specific transmission ratio to the feeding mechanism (not shown), to wind the strip 30 provided by the feeding mechanism. However, as the number of layers of strip 30 wound by the take-up roller 20 increases, the outermost winding diameter of the take-up roller 20, i.e., the effective winding diameter, also increases. This results in the winding linear speed of the take-up roller 20 being greater than the feeding speed of the feeding mechanism, thus increasing the tension F on the strip between the take-up roller 20 and the feeding mechanism. When the tension F exceeds a predetermined value, the strip 30 will be stretched thin due to excessive tension, causing uneven thickness or even breakage.

[0004] For medication dispensers, the increase in the length of the medication strip wound with each rotation of the take-up reel also causes changes in the relative positions of other components within the dispenser. For example, in a medication dispenser using blister packs, during normal operation, the blister openings on the stripped medication strip, dispensed by the drug delivery mechanism, are aligned with the airway structure of the intake manifold, facilitating medication inhalation for the user. Simultaneously, the take-up reel winds up the strip containing, for example, the strip cover, to avoid interfering with the user's medication dispensing process.

[0005] However, as the effective winding diameter of the take-up roller increases, the length of the strip wound by the take-up roller per rotation also increases. At this point, the force exerted on the blister opening by the wound strip also increases accordingly, causing the blister opening to move under the action of the wound strip. This results in a significant change or even complete misalignment of its relative position with the airway structure, preventing the user from obtaining sufficient medication and rendering the medication dispenser unusable. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, a winding device for a material strip is provided according to a first aspect of this disclosure, the winding device comprising:

[0007] A drive component includes a drive shaft and a first shoulder with a first inclined surface disposed around the drive shaft, the drive component being configured to rotate in a rotational direction;

[0008] A guide member, which is mounted on a drive shaft and has a second inclined surface that mates with a first inclined surface of a first shoulder;

[0009] The take-up roller is connected to the guide component in a non-rotatable manner;

[0010] An elastomer, housed between the guide and the take-up wheel, applies a preload to the guide;

[0011] The winding device is configured such that the take-up roller can be driven to rotate in the rotation direction by the drive component, and the take-up roller can also rotate relative to the drive component when the force acting on the take-up roller via the material belt is greater than a predetermined value.

[0012] According to one embodiment of this disclosure, the angle between the normal vector of the first inclined surface and the rotation direction of the driving component forms an acute angle.

[0013] According to one embodiment of this disclosure, a first inclined surface is provided, which is distributed over the entire circumference of the first shoulder about the drive shaft.

[0014] According to one embodiment of the present disclosure, a plurality of first inclined surfaces are provided, and each first inclined surface is uniformly distributed circumferentially around the entire circumference of the drive shaft.

[0015] According to one embodiment of this disclosure, two first inclined surfaces are provided.

[0016] According to one embodiment of this disclosure, the elastomer is a compression spring.

[0017] According to another embodiment of this disclosure, the guide has a housing portion arranged around the drive shaft for housing a compression spring.

[0018] According to another embodiment of the present disclosure, the receiving part is configured as a first cylindrical structure having a bottom on which a through hole for inserting a drive shaft is formed.

[0019] According to another embodiment of the present disclosure, an axially penetrating notch is provided on the outer periphery of the storage section.

[0020] According to another embodiment of the present disclosure, the take-up roller is constructed as a second cylindrical structure with a top, a through hole at the top, and a protrusion on the inner surface, which is fitted onto the radially outer side of the guide member through engagement with the notch.

[0021] According to another embodiment of the present disclosure, a rib is provided at the upper end of the drive shaft, and the top of the take-up wheel abuts against the bottom surface of the rib along the axial direction.

[0022] According to another embodiment of the present disclosure, the receiving wheel is provided with a notched portion eccentrically along the axial direction, and a rooting portion of the material strip is provided upright along the outermost circumference of the notched portion.

[0023] According to another embodiment of this disclosure, the drive component includes a drive chassis, and the drive shaft is integrally formed with or separately from the drive chassis.

[0024] According to another embodiment of this disclosure, when the drive shaft and drive chassis are formed separately, the drive shaft is detachably mounted on the drive chassis.

[0025] According to another embodiment of this disclosure, the drive chassis is configured as gears.

[0026] According to another embodiment of this disclosure, a second shoulder is formed at the bottom of the guide member, and a second inclined surface is formed on the second shoulder.

[0027] According to another embodiment of this disclosure, the position and number of the second shoulder correspond one-to-one with the first inclined surface.

[0028] According to another embodiment of the present disclosure, a first shoulder stop and a second shoulder stop that can lock into each other are formed on the first shoulder and the second shoulder, respectively.

[0029] According to the first aspect of this disclosure, the winding device is based on the tension of the material strip, which enables the take-up roller to rotate relative to the drive component when its effective winding diameter increases, thereby achieving motion compensation for the winding of the material strip by the take-up roller, so that the length of the material strip wound by the take-up roller remains consistent with each rotation, thereby avoiding the situation where the material strip breaks due to excessive tension.

[0030] According to a second aspect of this disclosure, this disclosure provides a pharmaceutical dispenser having a winding device for a feed strip as described in any embodiment of the first aspect of this disclosure.

[0031] Based on common knowledge in the field, the above-described embodiments can be combined in any way to obtain the preferred embodiments of this disclosure. Attached Figure Description

[0032] Figure 1 This is an exemplary schematic diagram of a strip winding device according to the prior art.

[0033] Figure 2This is an illustrative exploded view of a winding apparatus for a material strip according to a preferred embodiment of the present disclosure.

[0034] Figure 3 This is an example shown Figure 2 A schematic diagram of the drive components in the winding device.

[0035] Figure 4 This is an example shown Figure 2 A schematic diagram of the guide component in the winding device.

[0036] Figure 5 This is an example shown Figure 2 A schematic diagram of the take-up roller in the winding device.

[0037] Figure 6 This is an example shown Figure 5 A schematic diagram of the take-up roller at another angle.

[0038] Figure 7 This is an example shown Figure 2 A cross-sectional view of the winding device in its assembled state.

[0039] Figure 8 This is an example shown Figure 2 A partial cross-sectional view of the winding device in synchronous operation.

[0040] Figure 9 This is an example shown Figure 2 A partial cross-sectional view of the winding device in motion compensation working condition.

[0041] Figure 10 This is an example shown Figure 2 An exploded schematic diagram of another variation of the drive component in the winding device.

[0042] Figure 11 This is an example shown Figure 10 A bottom view of the drive chassis of the drive components.

[0043] Figures 12a-12b Examples were shown at different angles. Figure 11 A cross-sectional view of the drive chassis in the drive components.

[0044] Figure 13 This is an example shown Figure 10 A cross-sectional view of the drive components after assembly.

[0045] Figure 14 This is an example illustrating a drug dispenser according to a preferred embodiment of the present disclosure.

[0046] Figure 15 This is an example shown Figure 14 A schematic diagram of the drug dispensing device and drug belt in a drug dispenser.

[0047] Figure 16 This is an example shown Figure 15 An exploded view of the gear transmission system in the drug dispensing device. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings, which illustrate multiple embodiments according to this disclosure. It should be understood that the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments described in this disclosure without creative effort will fall within the scope of protection of this disclosure.

[0049] The terms "comprising," "having," and "having" in the description, claims, and accompanying drawings of this disclosure are open-ended terms. Therefore, "comprising" or "having" refers to, for example, a device having one or more elements, but not limited to having only those elements.

[0050] The terms "first," "second," etc., used in the specification, claims, or accompanying drawings of this disclosure are for distinguishing different objects, not for describing a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0051] In the description of this disclosure, it should be understood that directional terms, such as “top,” “bottom,” “axial,” “radial,” “circumferential,” “outer periphery,” “outer side,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content of this disclosure.

[0052] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "set with," "equipped with," and "installed" should be interpreted broadly. For example, "installed" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0053] The winding device disclosed herein can be used in a drug dispenser, which is an instrument for dispensing medication for administration to a patient. When the medication is contained in the drug dispenser and dispensed by the drug dispenser, it facilitates the patient to inhale the medication into the lungs or apply it to the nasal cavity.

[0054] A medication dispenser typically includes a housing, a strip medication carrier for holding powdered medication, a dispensing device for dispensing the medication, a stripping device for separating the strip and blister pack from the medication carrier, and a winding device that works in conjunction with the dispensing device and stripping device to wind the strip. A common strip medication carrier is a blister pack containing multiple discrete doses of powdered medication, arranged within the housing. The dispensing device dispenses medication by causing movement of the blister pack within the housing. The stripping device separates the strip and blister pack, thereby obtaining and dispensing a specific dose of powdered medication into the airway of the inhaler manifold, allowing the patient to inhale the powdered medication through the mouthpiece of the medication inhaler and the airway of the inhaler manifold for treatment. Simultaneously, the winding device winds up the stripped strip to prevent it from getting caught in the moving mechanism or power source, which could affect the normal operation of the medication inhaler or even damage it.

[0055] The winding device moves synchronously with the drug delivery device, winding the material strip by rotating at a predetermined angle, just like the drug delivery device. However, as the winding device continuously winds the material strip, the effective winding diameter of the take-up roller gradually increases. This causes the linear velocity of the take-up roller to exceed the drug delivery speed of the drug delivery device, thereby increasing the tension of the material strip between the winding device and the drug delivery device. Under the tension of the wound material strip, the position of the drug on the blister pack will change, resulting in misalignment of the drug and the airway. When the aforementioned tension is too high, it may also cause the material strip to break.

[0056] Therefore, to prevent the increase in the length of the winding strip per rotation of the winding device due to the increase in the effective winding diameter during the winding process, which could lead to misalignment between the blister opening and the air passage of the intake manifold after peeling (i.e., misalignment of the drug and the air passage) and excessive tension on the strip causing breakage, it is necessary to design an improved winding device. This winding device can compensate for the increased length of the winding strip per rotation due to the increased effective winding diameter of the take-up roller, thereby ensuring the consistency of the length of the winding strip per rotation of the take-up device. This prevents changes in the relative position of the blister and the air passage, and avoids strip breakage due to excessive tension, thus preventing the drug dispenser from malfunctioning. The winding device according to the first aspect of this disclosure will be described in detail below with reference to the accompanying drawings.

[0057] Figure 2 An exemplary winding device 100 for a material strip according to the present disclosure is shown. Reference Figure 2 The winding device 100 includes a drive component 1, a guide component 2, an elastomer 3, and a take-up wheel 4. Figure 3 The structure of drive component 1 is shown as an example. Figure 4 The structure of guide 2 is shown as an example. Figure 5 and Figure 6 The structure of the take-up roller 4 is shown as an example. (Reference) Figures 2 to 6 The drive component 1 includes a drive shaft 11 and a first shoulder 12 with a first inclined surface 13 arranged around the outer periphery of the drive shaft 11. The first inclined surface 13 may be configured, for example, as a spiral around the drive shaft 11. The drive component 1 also includes a drive chassis 110 located at its bottom, configured to cooperate with an external power source and rotate under the drive of the external power source.

[0058] The guide member 2 is mounted on the drive shaft 11 and has a second inclined surface 23 that mates with the first inclined surface 13 of the first shoulder 12. In the initial installation state, the first inclined surface 13 of the first shoulder 12 can abut against the second inclined surface 23 of the guide member 2, thereby forming a form-fit connection. In other words, both the first inclined surface 13 and the second inclined surface 23 can be configured as a helix around the drive shaft 11, and both have the same helix angle. The guide member 2 is also configured to rotate with the drive member 1, or to move relative to the drive member 1 along the first inclined surface 13 in a direction opposite to the rotation direction R of the drive member 1.

[0059] The take-up roller 4 is sleeved on the outside of the guide member 2, and the connection between the roller and the guide member 2 is configured to be non-rotatable. This non-rotatable connection means that the roller cannot rotate relative to the guide member 1 in the circumferential direction, but can move relative to the guide member 1 in the axial direction. Therefore, driven by the guide member 2, the take-up roller 4 can rotate together with the guide member 2 under the drive of the drive member 1, or rotate relative to the drive member 1 in a direction opposite to the rotation direction R of the drive member 1 to achieve motion compensation.

[0060] An elastomer 3 is disposed between the guide member 2 and the take-up wheel 4 to apply a preload to the guide member 2, thereby causing the second inclined surface 23 to press against the first inclined surface 13. When the magnitude of the preload applied to the guide member 2 by the elastomer 3 changes, the frictional force between the second inclined surface 23 of the guide member 2 and the first inclined surface 13 of the drive member 1 will also change accordingly.

[0061] Preferably, the guide member 2 has a receiving portion 21 disposed around the drive shaft 11 to better house the elastomer 3 between the guide member 2 and the take-up wheel 4. Specifically, the elastomer 3 is a compression spring sleeved on the drive shaft 11. It should be understood that any other suitable form of elastomer 3 may also be provided.

[0062] In this embodiment, reference Figure 3 The drive component 1 includes a drive chassis 110 located at its bottom, a drive shaft 11 for mounting and positioning other components, a first shoulder 12 for guiding the mating guide 2, and a stepped portion 17 for supporting the take-up wheel 4. The drive shaft 11 is integrally formed with the drive chassis 110, is upright on the drive chassis 110, and extends axially away from the drive chassis 110. At the top of the drive shaft 11, a radially protruding rib 15 is provided around the outer periphery of the drive shaft 11. From the top to the bottom of the rib 15, the rib 15 has a slope that is radially outward in the axial direction, so as to guide the take-up wheel 4 to be installed onto the bottom surface of the rib 15. At the same time, the maximum outer circumferential diameter of the rib 15 is slightly larger than the through hole 41 of the take-up wheel 4, so that after the take-up wheel 4 is installed, its top abuts against the bottom surface of the rib 15, thereby preventing it from moving axially away from the bottom of the drive component 1.

[0063] Preferably, the end of the drive shaft 11 away from the drive chassis 110 may also be provided with a planar side cut 16 parallel to the axial direction. The planar side cut 16 passes through the protruding rib 15 along the axial direction to increase the installation space between the take-up wheel 4 and the drive shaft 11, thereby facilitating the installation of the take-up wheel 14 on the bottom side of the protruding rib 15.

[0064] Preferably, the drive chassis 110 of the drive component 1 is constructed as a gear. In this case, the drive component 1 includes a gear located at the bottom and a drive shaft 11 disposed at the center of the gear. The drive component 1 can mesh with external gears and racks through the teeth of the gear, thereby rotating under the drive of a power source. Alternatively, the drive chassis 110 is constructed as a pulley, in which case the pulley cooperates with external transmission components and a power source through a belt, thereby rotating under the drive of the power source.

[0065] The drive chassis 110 is also provided with an annular stepped portion 17 formed around the drive shaft 11, and the stepped portion 17 protrudes from the top surface of the drive chassis 110. In the initial installation state of the winding device 100, the stepped portion 17 contacts the bottom wall of the take-up roller 4 to position and support the take-up roller 4, and can cooperate with the protruding rib portion 15 to restrict the axial movement of the take-up roller 4. Preferably, the outer diameter of the stepped portion 17 is smaller than the bottom outer diameter of the take-up roller 4.

[0066] A first shoulder 12 is also provided on the drive chassis 110 of the drive unit 1, and a first inclined surface 13 is formed on the top surface of the first shoulder 12. (Refer to...) Figure 3 The normal vector F of the first inclined surface 13 n The angle α between the first inclined surface and the rotation direction R of the drive component 1 is acute, meaning that the distance between the first inclined surface and the bottom surface of the drive chassis 110 gradually decreases along the rotation direction R. This is achieved by making the normal vector F of the first inclined surface 13... n The angle α between the guide member 2 and the rotation direction of the drive member 1 is an acute angle. Under certain conditions, the guide member 2 can move relative to the drive member 1 along the first inclined surface 13 in a direction opposite to the rotation direction R.

[0067] Only one first inclined surface 13 can be provided on the first shoulder 12. In this case, the first inclined surface 13 is provided on the entire circumference of the first shoulder 12 around the drive shaft 11. When only one first inclined surface 13 is provided, since the circumference of the first inclined surface 13 is long enough, the length required for the guide member 2 to move relative to the drive member 1 along the first inclined surface 13 during the rotation compensation process of the winding device 100 can be satisfied. At the same time, since the circumference of the first inclined surface 13 is long enough, the movement of the guide member 2 along the first inclined surface 13 can be guaranteed to be continuous, so that the second inclined surface 23 of the guide member 2 will not completely leave the first inclined surface 13, thereby avoiding the bouncing of the guide member 2 during the movement, and thus avoiding vibration and noise in the winding device 100 during the winding of the material strip.

[0068] Multiple first inclined surfaces 13 can also be provided on the first shoulder 12, and the specific number can be selected and determined according to actual needs. When multiple first inclined surfaces 13 are provided, they are evenly distributed on the entire circumference of the first shoulder 12 around the drive shaft 11, and the top surface of the first shoulder 12 is serrated in the circumferential direction. The multiple first inclined surfaces 13 can be evenly distributed one after another on the circumference formed by the first shoulder 12, or they can be evenly distributed at a certain distance through the circumferential gaps between the first shoulder 12 and each first inclined surface 13. The specific distribution form can be selected and determined according to actual needs.

[0069] Preferably, two first inclined surfaces 13 are provided and are evenly distributed on the circumference formed by the first shoulder 12, so that the length of the first inclined surfaces 13 is long enough to satisfy the length required for the guide 2 to move along the first inclined surfaces 13 during the rotation compensation process of the winding device 100, thereby avoiding the bouncing of the guide 2 and thus avoiding vibration and noise in the winding device 100 during the winding of the material strip.

[0070] Preferably, the first inclined surface 13 is configured to engage with the second inclined surface 23, and the circumferential length of each first inclined surface 13 is equal to or greater than the circumferential length of each second inclined surface 23. Therefore, during the winding process of the winding device 100 winding the strip, the first inclined surface 13 of the drive member 1 can remain in contact with the second inclined surface 23 of the guide member 2.

[0071] In this embodiment, reference Figure 3 The drive component 1 includes a first shoulder 12 that forms a circumference around the drive shaft 11. Furthermore, the first shoulder 12 has two first inclined surfaces 13, which are evenly distributed sequentially around the circumference of the first shoulder 12 around the drive shaft 11, and the normal vector F of each first inclined surface 13 is... n The angle α between the driving component 1 and the direction of motion R is an acute angle.

[0072] By providing two first inclined surfaces 13, each of which is sufficiently long, the guide member 2 can move relative to the drive member 1 under certain conditions during the winding process of the winding device 100. This ensures that the winding device 100 can compensate for movement when the effective winding diameter of the take-up roller 4 increases. Simultaneously, because each first inclined surface 13 is sufficiently long, the second inclined surface 23 of the guide member 2 remains in contact with the first inclined surface 13 and does not completely leave it. This avoids bouncing of the guide member 2 due to the second inclined surface 23 not contacting the first inclined surface 13 of the drive member 1, thus preventing vibration and excessive noise from the winding device 100 during the winding process.

[0073] In particular, when two first inclined surfaces 13 are arranged sequentially and evenly distributed, there is a bridging surface 14 between two adjacent first inclined surfaces 13 on the first shoulder 22, which preferably extends on an axial surface parallel to or through the axis of the drive shaft 11.

[0074] When the guide member 2 contacts the bridging surface 14, the bridging surface 14 forms a first shoulder stop that prevents the guide member 2 from continuing to rotate relative to the drive member 1 in the rotation direction R. At this time, the guide member 2 is stuck at the stop position of the drive member 1 and can rotate together with the drive member 1 under the drive of the drive member 1.

[0075] Furthermore, when the guide member 2 rotates together with the drive member 1, the locking mechanism is as follows: based on the preload applied to the guide member 2 by the elastic body 3, the guide member 2 is subjected to a force along the first inclined surface 13 toward the bottom of the drive member 1, and a frictional force is formed between the inclined surfaces of the drive member 1 and the guide member 2 to prevent the guide member 2 from moving relative to the drive member 1. This creates a tendency for the guide member 2 to rotate relative to the drive member 1 in the rotation direction R. At this time, since the guide member 2 is in contact with the bridging surface 14, the bridging surface 14 will form a stop to prevent the guide member 2 from moving relative to the drive member 1, that is, the bridging surface 14 forms a first shoulder stop. This first shoulder stop can cooperate with the guide member 2 to prevent the guide member 2 from rotating further relative to the drive member in the same direction as the rotation direction R.

[0076] During the winding process of the winding device 100, under the action of the tension of the material strip, the guide 2 can also move along the first inclined surface 13, so that the guide 2 rotates relative to the driving component 1 in a direction opposite to the rotation direction R of the driving component 1.

[0077] refer to Figure 2 and Figure 4 The guide member 2 has a receiving portion 21 for receiving the elastomer 3, which is disposed around the drive shaft 11. The receiving portion 21 is formed as a first cylindrical structure with a bottom. Furthermore, a through hole 26 with a diameter larger than that of the drive shaft 11 is formed at the bottom of the receiving portion 21, allowing the guide member 2 to be inserted into the drive shaft 11 through the through hole 26 and thus fitted onto the drive shaft 11. Simultaneously, the inner diameter of the receiving portion 21 is larger than the outer diameter of the elastomer 3, and the diameter of the through hole 26 at the bottom of the receiving portion 21 is smaller than the outer diameter of the elastomer 3, allowing the elastomer 3 to be received within the receiving portion 21, thereby facilitating the application of axial preload by the elastomer 3 to the guide member 2.

[0078] Under the action of the elastic body 3, for example under compression, the second inclined surface 23 comes into contact with the first inclined surface 13. Simultaneously, the guide 2 contacts or comes into contact with or fits against the bridging surface 14 of the drive component 1 and is locked onto the first shoulder 12, thereby mounting the guide 2 to the top of the drive component 1. Preferably, when the elastic body 3 is a compression spring, its outer diameter is 1.5 times the diameter of the through hole 26.

[0079] A notch 25 is provided on the outer periphery of the receiving part 21. The notch 25 extends radially and penetrates the side wall of the receiving part 21 axially. The guide member 2 is connected to the receiving wheel 4 through the notch 25 in a non-rotatable manner. The specific number of notches 25 can be selected according to actual needs. Preferably, there are two notches 25. More preferably, multiple notches 25 are evenly distributed circumferentially on the outer periphery of the receiving part 21.

[0080] A second shoulder 22 is formed on the lower side of the storage section 21. The number and position of the inclined surfaces of the second shoulder 22 correspond one-to-one with the first inclined surface 13. The second inclined surface 23 forms the bottom end surface of the second shoulder 22, and its shape matches that of the first inclined surface 13. That is, the number, planar shape, and inclination angle (helix angle) of the second inclined surface 23 are the same as those of the first inclined surface 13. When the guide member 2 has only one second shoulder 22, the second inclined surface 23 is formed on the entire circumference of the second shoulder 22 around the drive shaft.

[0081] When the guide member 2 has multiple second shoulders 22, the multiple shoulders 22 form a circumference around the drive shaft 11 and are evenly distributed on the circumference. The multiple second shoulders 22 can be evenly distributed sequentially on the circumference they form, or they can be evenly distributed at a certain distance through the circumferential notches 241 of the second shoulders 22. The specific distribution form can be selected and determined according to actual needs. When multiple second shoulders 22 are provided, the arc length of each second shoulder 22 on its circumference can be less than the arc length of the first inclined surface 13.

[0082] In this embodiment, reference Figure 4 The guide member 2 has two second shoulders 22, each with a second inclined surface 23. The two second shoulders 22 form a circumference around the central axis of the receiving portion 21 and are evenly distributed on this circumference at intervals of a certain distance through circumferential notches 241. Two second inclined surfaces 23 are formed on the bottom surface of the second shoulders 22. In the initial installation state of the winding device 100, the guide member 2 is mounted on top of the drive member 1 through contact between its second inclined surface 23 and the first inclined surface 13 of the drive member 1.

[0083] A vertical surface 24 is formed between adjacent second inclined surfaces 23, which is parallel to the bridging surface 14 in the initial installation state. This vertical surface 24 matches the shape of the bridging surface 14. In the initial installation state, the vertical surface 24 is in contact with the bridging surface 14, thereby forming a second shoulder stop that restricts further rotation of the guide member 2 relative to the drive member 1 in the rotation direction R. As the guide member 2 rotates with the drive member 1, the mutual locking of the first and second shoulder stops, under the action of the elastic body 3, allows the guide member 2 to rotate together with the drive member 1.

[0084] refer to Figure 5 and Figure 6 The take-up roller 4 is constructed as a second cylindrical structure with a top. A through-hole 41 is provided at the top, the diameter of which is larger than the shaft diameter of the end of the drive shaft 11 furthest from the drive chassis 110. This allows the take-up roller 4 to pass through the through-hole 41 and through the drive shaft 11, thereby mounting the take-up roller 4 onto the drive shaft 11. The inner surface of the cylindrical wall of the take-up roller 4 has a plurality of radially extending protrusions 47, which are distributed circumferentially on the inner surface of the take-up roller 4, preferably evenly distributed. Preferably, the positions and numbers of the plurality of protrusions 47 on the take-up roller 4 correspond one-to-one with the positions and numbers of the plurality of notches 25 on the guide member 2.

[0085] Alternatively, the positions of the protrusion 47 and the notch 25 can be interchanged, that is, the notch 25 can be provided on the inner surface of the take-up wheel 4, and the protrusion 47 can be provided on the outer periphery of the guide member 2.

[0086] In the circumferential direction of the inner surface of the take-up roller 4, the size of the protrusion 47 is equal to the size of the notch 25, so that the protrusion 47 can be inserted into the notch 25, allowing the take-up roller 4 to be fitted radially outside the guide member 2 through the engagement of the protrusion 47 with the notch 25, forming a non-rotatable connection. Because the protrusion 47 on the inner side of the take-up roller and the notch 25 on the outer side of the guide member 2 engage with each other, the axial movement of the take-up roller 4 is restricted, allowing only rotational movement. When the guide member 2 moves along the first inclined surface 13 via its second inclined surface 23, the guide member 2 can also move axially along the protrusion 47 via the notch 25, thereby causing the take-up roller 4 to rotate only.

[0087] refer to Figure 5 An axially extending notched portion 43 is provided on the outer periphery of the take-up roller 4, and a material strip rooting portion 44 is erected along the outermost circumference of the notched portion 43. The material strip forms a loop-shaped collar at its initial position. The shape of the collar matches the material strip rooting portion 44. The material strip is fixed to the take-up roller 4 by being fitted onto the material strip rooting portion 44 through the collar.

[0088] Figure 7 The winding device in its assembled state is shown. (Reference) Figure 7 After the winding device 100 is assembled, the guide 2, the elastic body 3, and the take-up roller 4 are sequentially installed or sleeved on the drive shaft 11 of the drive component 1. Simultaneously, the top of the take-up roller 4 abuts against the protruding rib 15 of the drive shaft 11 near the bottom surface of the take-up roller 4, preventing it from moving axially. The elastic body 3, such as a compression spring, is disposed in the housing 21 of the guide 2 and located between the take-up roller 4 and the guide 2, thereby applying a preload axially toward the drive unit chassis 110 to the guide 2 to compress it axially. Due to the preload of the elastic body 3, the second inclined surface 23 adheres to the first inclined surface 13. Simultaneously, the protrusion 47 on the inner surface of the take-up roller 4 inserts into the corresponding notch 25 on the guide 2, thereby rotatably locking the take-up roller 4 and the guide 2, allowing the take-up roller 4 to rotate with the guide 2 under the drive of the drive component 1.

[0089] Initially, the material strip is wound around the take-up reel 4, and the feeding component feeds the strip at a constant angle each time. When the tension on the wound strip does not exceed a predetermined threshold, refer to Figure 8 Under the axial compression of the elastic body 3, the vertical surface 24 of the guide member 2 and the bridging surface 14 are in contact with each other. At this time, the material receiving device is in normal working condition, that is, the material receiving wheel rotates together with the drive component 1.

[0090] After the take-up roller 4 completes one turn of the strip, its effective winding diameter increases accordingly, resulting in an increase in the linear velocity of the take-up roller 4. Consequently, the length of the strip wound by the take-up roller 4 in a single rotation increases. At this time, because the length of the wound strip increases, while the length of the strip fed by the feeding component in each rotation remains constant, the tension of the strip between the winding device 100 and the drug delivery device increases.

[0091] When the tension increases to a predetermined value, based on the tension borne by the strip, refer to... Figure 9 The guide member 2 can overcome the preload F of the elastic body 3. t The frictional force F generated between the frictional force and the first inclined surface 13 f and preload F t The component force F along the first inclined surface toward the bottom of the drive component 1 d This causes the material to rotate relative to the drive component 1 in a direction opposite to the rotation direction R, together with the take-up wheel 4, while the guide 2 moves upward along the first inclined surface 13. The frictional force F... f The friction factor between the first inclined surface 13 and the second inclined surface 23 is equal to the preload F. t The product of the components on the normal vector of the first inclined surface 13.

[0092] At this time, the winding device 100 is in motion compensation mode. Specifically, the take-up roller 4, which is non-rotatably connected to the guide member 2, rotates relative to the drive member 1 in the opposite direction to the rotation direction R of the drive member 1 under the drive of the guide member 2. That is, the take-up roller 4 will rotate in the opposite direction relative to the drive member 1 due to tension, thereby achieving motion compensation for the take-up roller 4. However, at this time, the take-up roller 4 is still winding the strip, that is, the rotational motion of the take-up roller 4 and the guide member 2 relative to the ground is still along the rotation direction R of the drive member 1. Therefore, based on the tension of the strip, the winding device for the strip can overcome the friction between the guide member 2 and the first shoulder 12 and the component along the first inclined surface 13 generated by the preload, so that the second inclined surface 23 of the guide member 2 and the first inclined surface 13 of the drive member 1 can move relative to each other, thereby achieving motion compensation for the take-up roller 4.

[0093] In a second embodiment of the first aspect of this disclosure, a winding device 100 for a material strip is also provided. The difference between the winding device 100 in the second embodiment and the winding device 100 in the first embodiment is that the drive shaft and the drive chassis are formed separately. Specifically, refer to... Figure 10 The split-type drive component 1 is basically the same as that in the first embodiment, including a drive shaft 111, a first shoulder 121, and a stepped portion 171. The only difference is that in the second embodiment, the drive shaft 111 is detachably mounted in the center of the drive chassis 112 of the drive component 1.

[0094] refer to Figures 10 to 13 The drive component 1 includes a drive shaft 111 and a drive chassis 112. A through hole 161 is provided in the center of the drive chassis 112. Multiple radially extending and axially penetrating mounting grooves 181 are provided on the inner surface of the through hole 161, and the mounting grooves 181 are evenly distributed circumferentially on the inner surface of the through hole 161. Preferably, two mounting grooves 181 are provided. The drive shaft 111 is constructed as a stepped shaft, with the diameter of the shaft 162 at the end near the drive chassis 112 being smaller than the diameter of the through hole 161, allowing it to be inserted into the through hole 161. Furthermore, multiple evenly distributed latches 182 are provided at the end of the shaft 162 near the drive chassis 112, with each latch 182 evenly distributed along the outer circumference of the shaft 162. Preferably, the position and number of each latch 182 correspond one-to-one with the mounting grooves 181. Furthermore, in the circumferential direction, the size of the buckle 182 is smaller than the size of the mounting groove 181, so that each buckle 182 can pass through the mounting groove 181 at the corresponding position and thus be inserted into the through hole 161 of the drive component 1 together with the shaft 162.

[0095] Meanwhile, a hole 183 with a diameter larger than the through hole 161 is formed on the lower surface of the bottom center of the drive component 1. The hole 183, the through hole 161, and the mounting groove 181 together form an arc-shaped protrusion 184 located inside the drive chassis 112. A groove 185 capable of engaging and locking the latch 182 is formed on the bottom surface of the protrusion 184. The center line of the groove 185 forms a certain angle with the center axis of the mounting groove 181 in space. Preferably, this angle is 90 degrees.

[0096] Specifically, the process of locking the drive shaft 111 to the drive chassis 112 includes inserting the shaft 162 and the latch 182 into the through hole 161 of the drive chassis 112, then rotating the drive shaft 111 by a certain angle so that the latch 182 reaches the corresponding position in the slot 185 within the hole 183, and then lifting the drive shaft 111 axially to press the latch 182 into the slot 185, thereby allowing the latch 182 to be locked in place as described above. Figure 13 The drive shaft 111 is snapped into the slot 185, allowing it to rotate synchronously with the drive component 1 after installation. Furthermore, preferably, the protruding rib 151 on the drive shaft 111 is constructed as an annular shape with a flat lower surface. More preferably, the surface of the take-up wheel 4 that contacts the protruding rib 151 is set as a plane, so that the friction between the top surface of the take-up wheel 4 and the protruding rib 151 is planar friction, thereby reducing the frictional force between the take-up wheel 4 and the drive shaft 111.

[0097] According to the second aspect of this disclosure, a method such as Figure 14 The drug dispenser 200 is shown. (Reference) Figures 14 to 16 The medication dispenser 200 includes a housing 201, a cover 202, a nozzle 203, and an intake manifold 210 and a medication dispensing device 220 disposed inside the housing. The intake manifold 210 is installed at a specific position on the medication dispensing device 220. The cover 202 is mechanically coupled to the medication dispensing device 220. Therefore, the user can trigger the movement of the medication dispensing device 220 inside the housing by opening the cover 202. When the cover 202 is fully open, the medication dispensing device 220, under normal operating conditions, can dispense medication, such as powdered medication, to the corresponding position in the airway of the intake manifold 210, allowing the user to inhale the medication powder through the nozzle 203 via the intake manifold 210.

[0098] For example, the cover 202 is mechanically coupled to the medication dispensing device 220 via a transmission mechanism (not shown), and the rotation of the cover 202 can input driving power to the medication dispensing device 220. Furthermore, the intake manifold 210 is mounted on the manifold mounting portion 211 located at a specific position on the medication dispensing device 220, so that after the medication is dispensed by the medication dispensing device 220 under normal operating conditions, the medication exposed to air on the medication tape can be aligned with the air passage of the intake manifold 210.

[0099] The specific structure of the drug dispensing device 220 and the drug dispensing process will be described below in conjunction with the drug belt 230, wherein the drug belt 230 includes a cover strip 231, a substrate strip 232 and a drug receiving portion 233 between the two capable of receiving powdered drugs, and the cover strip 231 and the substrate strip 232 at the ends of the drug belt 230 along the length direction are in a state of separation from each other.

[0100] refer to Figures 15 to 16 The drug dispensing device 220 includes a drug delivery device 240, a stripping device (not shown), a substrate tape winding device 250, and a winding device 100, wherein the winding device 100 may be a winding device 100 for a material tape as described in various embodiments of the first aspect of this disclosure, which is configured in the drug dispensing device 220 to wind the cover tape 231.

[0101] The drug delivery device 240 is configured to dispense medication. Specifically, the drug delivery device 240 includes a medication receiving cavity 241 and a medication mounting shaft 242. The medication 230, after being wound, can be received in the medication receiving cavity 241 and simultaneously mounted and fixed on the medication mounting shaft 242, thereby enabling it to move around the medication mounting shaft 242 under the action of external force or the pulling force of the winding device 100, so as to realize the movement of the medication 230 within the housing and the medication dispensing action. The stripping device is configured to strip the medication 230 near the airway.

[0102] The substrate tape winding device 250 is configured to wind up the stripped substrate tape 232. The substrate tape winding device 250 includes a substrate tape receiving cavity 251 and a winding shaft 252. The end of the substrate tape 232 is fixed to the mounting portion of the winding shaft 252, and the stripped substrate tape 232 can be wound onto the winding shaft 252 under the rotation of the winding shaft 252, thereby being received in the substrate tape receiving cavity 251.

[0103] The winding device 100 is configured to wind the stripped cover sheet 232. The specific construction and operation of the winding device 100 are as described in the embodiments of the first aspect of this disclosure. (See also...) Figure 15The end of the cover strip 232 in the separated state is fixed to the strip rooting part 43 of the take-up wheel 4 of the winding device 100, and is wound on the outer surface of the take-up wheel 4 by the rotation of the take-up wheel 4.

[0104] Furthermore, during the process of winding the stripped cover strip 232, the take-up roller 4 can rotate relative to the drive component 1 to achieve motion compensation, thereby ensuring that the length of the cover strip 232 wound by the take-up roller 4 in one rotation is consistent, and thus ensuring that the relative position of the medicine receiving cavity and the air intake manifold 210 remains unchanged. Therefore, the medicine dispenser 200 can achieve medicine distribution and make medicine available through the rotation of the cover 202, the drug delivery device 240, the winding device 100 and the substrate strip winding device 250, as well as the interaction of the above components and devices.

[0105] When the cover 202 rotates, the medicine dispensing device 220 is triggered to begin dispensing the medicine. When the medicine dispensing device 220 is triggered, refer to... Figure 15 The indexing wheel 243 of the drug delivery device 240 begins to rotate, thereby driving the drug strip 230 to rotate around the drug strip mounting shaft 242. This causes the drug strip 230 that is not wound onto the drug strip mounting shaft 242 to move within the housing towards the air passage of the intake manifold 210. Simultaneously, the winding device 100 rotates synchronously with the drug delivery device 240, and the substrate strip winding device 250 also rotates synchronously. When the cap strip 231 and substrate strip 232 of the curled drug strip 230 are separated by the indexing wheel 243 and the peeling device of the drug delivery device 230, under the pulling force generated by the rotation of the take-up wheel 4 of the winding device 100, the cap strip 231 is immediately wound onto the take-up wheel 4 of the winding device 100 after being peeled off.

[0106] Simultaneously, the substrate strip 232, separated by the peeling action, is wound onto the winding shaft 252 of the substrate strip winding device 250. At this point, the medication contained in the medication receiving cavity 233 is inhaled by the patient through the airway of the intake manifold 210 and the mouthpiece 203 via the open opening formed after peeling. In summary, the synchronized rotation of the drug delivery device 230, the winding device 100, and the substrate strip winding device 240 achieves medication dispensing and accessibility. The following will combine... Figure 16 Specifically, a gear transmission system 260 is described to achieve synchronous rotation between the drug delivery device 230, the winding device 100, and the substrate belt device 240.

[0107] refer to Figure 16 The gear transmission system 260 includes a trigger gear 261, a drug delivery gear 262, a first transmission gear 263, a drive gear 264, and a substrate belt winding gear 265, wherein the drive gear 264 can be one of the aforementioned gears. Figure 3 or Figure 10The gears exemplified here form the drive chassis 110 or drive chassis 112, i.e., at this time Figure 3 The drive chassis 110 of the drive unit 1 shown is constructed as a gear or Figure 10 The drive chassis 112 of the drive unit 1 shown is constructed as a gear. Specifically, the power transmission process of this gear transmission system 260 will be described in detail below.

[0108] The gear transmission system 260 is mechanically coupled to the cover 202 via a trigger gear 261 and a transmission mechanism (not shown), and can receive input driving power when the cover 202 is rotated. The drug delivery gear 262 meshes with the trigger gear 261 and can rotate simultaneously under the drive of the trigger gear 261 when the trigger gear 261 rotates. Moreover, the indexing wheel 243 in the drug delivery device 240 is fixed to the drug delivery gear 262, and the indexing wheel 243 rotates with the drug delivery gear 262, so that the indexing wheel 243 also rotates synchronously under the drive of the trigger gear 261 to drive the drug belt 230 to dispense the drug.

[0109] Simultaneously, the substrate tape winding gear 264 meshes with the first transmission gear 263, which in turn meshes with the trigger gear 261. That is, the substrate tape winding gear 264 engages with the trigger gear 261 via the first transmission gear 263, allowing the substrate tape winding gear 264 to rotate synchronously with the trigger gear 261 via the first transmission gear 163. Meanwhile, the substrate tape winding shaft 251 is mounted on the substrate tape winding gear 264, allowing the substrate tape winding shaft 251 to rotate with the substrate tape winding gear 264 to wind the stripped substrate tape 232, thereby achieving synchronous rotation of the substrate tape winding device 250 and the drug delivery device 240.

[0110] The drive gear 265 meshes with the drug delivery gear 262 and can rotate synchronously under the drive of the drug delivery gear 262, thereby inputting rotational motion to the winding device 100, so that the winding device 100 winds the peeled cover strip 231 under the drive of the drive gear 265. When the effective winding diameter of the take-up wheel 4 increases, as described in the embodiments of the first aspect of this disclosure, the take-up wheel 4 can rotate relative to the drive gear 265, thereby compensating for the extra length of cover strip 231 that the take-up wheel 4 may wind each time the drive gear 265 rotates due to the increase in the outermost diameter. This ensures that the length of cover strip 231 wound by the take-up wheel 4 each time the drive gear 265 rotates is consistent, thereby avoiding changes in the actual position of the medicine exposed to the air due to the tension of the take-up wheel 4, and thus avoiding misalignment of the medicine with the air passage of the intake manifold 210, which would prevent the user from obtaining the medicine. At the same time, since the length of cover strip 231 wound by the take-up wheel 4 is consistent each time it rotates. The push tension of the drug delivery belt 230 provided by the receiving roller 4 or the tension of the drug delivery belt 230 between the receiving roller 4 and the drug delivery device 240 is basically constant, which effectively avoids the drug delivery belt 230 from breaking due to excessive tension.

[0111] This disclosure is not limited to the embodiments described above, and can be appropriately modified without departing from the scope of this disclosure. For example, in the above embodiments, it has been described that the second inclined surface is disposed on the take-up roller, and the guide member can also be integrally formed with the take-up roller. It is evident from the above disclosure that the solutions of this disclosure can be varied in many ways. These variations should not be considered as departing from the spirit and scope of this disclosure, and all such modifications that can be made by those skilled in the art are intended to be included within the scope of the appended claims.

Claims

1. A winding device for a material strip, characterized in that, include: A drive component, the drive component including a drive shaft, a first shoulder with a first inclined surface disposed around the drive shaft, the drive component being configured to rotate in a rotational direction; A guide member, which is mounted on the drive shaft and has a second inclined surface that mates with a first inclined surface of the first shoulder; The take-up roller is connected to the guide member in a non-rotatable manner; An elastomer, housed between the guide and the take-up wheel, applies a preload to the guide. The winding device is configured such that the take-up roller can be driven to rotate in the rotation direction by the drive component, and the take-up roller can also rotate relative to the drive component when the force acting on the take-up roller via the material belt is greater than a predetermined value.

2. The winding device as described in claim 1, characterized in that, The angle between the normal vector of the first inclined surface and the rotation direction of the driving component forms an acute angle.

3. The winding device as described in claim 2, characterized in that, A first inclined surface is provided, which is distributed on the entire circumference of the first shoulder around the drive shaft.

4. The winding device as described in claim 2, characterized in that, Multiple first inclined surfaces are provided, and each first inclined surface is evenly distributed circumferentially around the entire circumference of the drive shaft on the first shoulder.

5. The winding device as described in claim 4, characterized in that, Two of the first inclined surfaces are provided.

6. The winding apparatus as described in claim 5, characterized in that, The elastic body is a compression spring.

7. The winding apparatus as described in claim 6, characterized in that, The guide has a housing portion arranged around the drive shaft for housing the compression spring.

8. The winding apparatus as described in claim 7, characterized in that, The storage section is formed as a first cylindrical structure with a bottom, the bottom having a through hole for inserting the drive shaft.

9. The winding apparatus as described in claim 8, characterized in that, An axially penetrating notch is provided on the outer periphery of the storage section.

10. The winding apparatus as claimed in claim 9, characterized in that, The receiving wheel is constructed as a second cylindrical structure with a top, a through hole at the top, and a protrusion on its inner surface. It is fitted onto the radially outer side of the guide member by engaging the protrusion with the notch.

11. The winding apparatus as claimed in claim 1, characterized in that, A radially protruding rib is provided at the top of the drive shaft around its outer periphery, and the top of the take-up wheel abuts against the bottom surface of the rib.

12. The winding apparatus as claimed in claim 11, characterized in that, The receiving wheel has a notched section along the axial direction, and a rooting section for the material strip is erected vertically along the outermost circumference of the notched section.

13. The winding apparatus according to any one of claims 1 to 12, characterized in that, The drive component includes a drive chassis located at its bottom, and the drive shaft is integrally formed with the drive chassis or formed separately.

14. The winding apparatus as claimed in claim 13, characterized in that, When the drive shaft and the drive chassis are formed separately, the drive shaft is detachably mounted on the drive chassis.

15. The winding apparatus as claimed in claim 13, characterized in that, The drive chassis is constructed as gears.

16. The winding apparatus as claimed in claim 14, characterized in that, The bottom of the guide member has a second shoulder, and the second inclined surface is formed on the second shoulder.

17. The winding apparatus as claimed in claim 16, characterized in that, The position and number of the second shoulder correspond one-to-one with the first inclined surface.

18. The winding apparatus as claimed in claim 16, characterized in that, The first shoulder and the second shoulder are respectively formed with mutually interlocking first shoulder stop and second shoulder stop.

19. A medicine dispenser, characterized in that, It has a winding device as described in any one of claims 1 to 18.

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