Mechanical counting driver

Abstract

The utility model relates to a mechanical counting driver, and belongs to the field of medical quantitative aerosol drivers. Comprising an aerosol tank, a driver, a counting assembly and a counting assembly shell. Wherein the counting assembly is integrally assembled in the counting assembly shell, the whole counting assembly and the driver body can be conveniently assembled, the counting assembly adopts a one-piece anti-reversion component, and anti-reversion operation of multiple gear components can be synchronously achieved; the counting accuracy of the whole mechanical counting driver in the using process is guaranteed in a multiple mode.

Description

Technical Field

[0001] The utility model relates to a quantitative aerosol driver, in particular to an inhalation aerosol driver which uses a mechanical structure to achieve the purpose of counting. Background Art

[0002] Asthma, Chronic Obstructive Pulmonary Disease,

[0003] COPD) are the two respiratory diseases that have the most serious impact on patients. At this stage, pulmonary inhalation drug delivery has become a relatively mature and common treatment for respiratory diseases. The inhalation drug delivery method using a metered-dose aerosol driver has become the main route chosen for drugs involved in the treatment of respiratory diseases.

[0004] The characteristic of a metered-dose aerosol driver is that, during the patient's use, each press of the drug can accurately deliver the set dose of liquid medicine, which is convenient for the patient's inhalation treatment. However, the common aerosol cans and driver devices on the market are all made of opaque materials, which makes it impossible for patients to accurately judge the amount of residual medicine in the aerosol can. When the metered-dose aerosol is about to run out, the last few presses cannot guarantee the accuracy of the drug dose. This has prompted the development and production of counting and metered-dose aerosol drivers.

[0005] In the prior art, there are two mechanical counting methods: one is to use the cylinder shaft to drive the belt-shaped digital display component to complete the conversion and decrease of the number of times the remaining medicine can be used in a similar way to a track. In this method, the numbers are arranged in sequence along the track at the same distance, which has high requirements on the coordination between the cylinder shaft end gear teeth and the track transmission, and the strength of the counting component is weak, and the possibility of errors in the overall product life cycle is high; the other mechanical counting method is to place the numbers on the side of the gear, and use the transmission coordination between the side-by-side gears to complete the conversion and decrease of the number of times the remaining medicine can be used, but this method may cause the internal gears to move and dislocate due to vibration or shaking when carrying the overall quantitative aerosol driver in daily life.

[0006] In addition, some counting drivers on the market use a remaining dose indication method, that is, the display changes every 10 or 20 counts. This method initially achieves the effect of remaining dose display, but the overall dose display value has a large deviation, the displayed information has a certain lag, and the remaining dose value that the patient can obtain is inaccurate. Utility Model Content

[0007] The main purpose of the utility model is to provide a mechanical counting driver which has higher accuracy and is easy to adjust during the overall use process in view of the above problems.

[0008] A mechanical counting driver, comprising an aerosol can, a driver, a counting assembly and a counting assembly housing, wherein: the driver body is L-shaped and has three openings, namely a longitudinal opening for accommodating the aerosol can, a transverse opening for accommodating the counting assembly and a transverse opening opposite to the counting assembly and providing a passage for aerosol liquid medicine to enter a patient's oral cavity; the counting assembly comprises a reset member, a transmission member, an anti-reversal member and a gear set, and the gear set comprises a ones wheel, a tens wheel, a hundreds wheel and a plurality of transition wheel shafts;

[0009] Furthermore, the counting component is integrated and accommodated in the counting component housing, and a display window is provided on the counting component housing, through which partial axial surfaces of the ones digit wheel, the tens digit wheel and the hundreds digit wheel can be observed from the outside.

[0010] Furthermore, the transition wheel shaft has two groups of transition gear teeth, the transition gear teeth are parallel to each other and have a gap therebetween, and the transition wheel shaft is an integrated structure.

[0011] Furthermore, a group of sequentially arranged numbers 0-9 are arranged on the circumferential outer axial surface of the units wheel disc, a coaxial special-shaped ratchet is arranged on one end face of the units wheel disc, units carry gear teeth are arranged on a partial circumferential outer axial surface of the special-shaped ratchet, the number of the units carry gear teeth is greater than or equal to 1 and is not arranged around the special-shaped ratchet for a whole circle, and the other side of the units wheel disc is a smooth end face.

[0012] Furthermore, the anti-reversal component is a one-piece structure, which can be divided into three parts: an anti-reversal component fixing plate, an anti-reversal spring clip for the individual digit wheel and an anti-reversal spring clip for the transition wheel shaft. A plurality of parallel holes are arranged in the center of the anti-reversal component fixing plate to fix the anti-reversal component on the counting component housing, the anti-reversal spring clip for the individual digit wheel is in contact with the special-shaped ratchet, and the anti-reversal spring clip for the transition wheel shaft is in contact with the transition wheel teeth.

[0013] Furthermore, a group of sequentially arranged numbers 0-9 are arranged on the circumferential outer axis surface of the tens wheel, a tens rotating wheel is arranged on one end surface of the tens wheel, the tens rotating wheel is coaxial with the tens wheel and has a complete circle of gears, and a tens carry wheel is arranged on the other end surface of the tens wheel, the tens carry wheel is coaxial with the tens wheel and has a number of teeth greater than or equal to 1, and the teeth of the tens carry wheel are not arranged around the entire circle of the tens carry wheel.

[0014] Furthermore, a group of sequentially arranged numbers 0-N are arranged on the circumferential outer axis surface of the hundreds wheel, N is a number greater than 1, and a hundreds rotating wheel is arranged on one end surface of the hundreds wheel, the hundreds rotating wheel is coaxial with the hundreds wheel and has a complete circle of gears, and the other end surface of the hundreds wheel is a smooth plane.

[0015] Preferably, each adjacent number interval on the end surfaces of the ones digit wheel, the tens digit wheel and the hundreds digit wheel is the same in size.

[0016] Furthermore, the transmission component is of an irregular shape, and a transmission matching clamp is provided on a plane on one side of the transmission component, and the transmission matching clamp is in the shape of an irregular protrusion that can be matched with the irregular ratchet.

[0017] Furthermore, one end of the reset member is fixed to the side wall inside the counting component housing, and the other end is fixed to the transmission member. When the transmission member and the counting component are torsionally offset at a corresponding angle, the reset member provides a torque sufficient to return to the initial state.

[0018] Preferably, the reset member adopts a torsion spring structure.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The transmission of the overall counting component is precise and reliable. When the device is pressed during use, the count display changes in units of one, that is, each change in the device count display corresponds to a single pressing action, and the remaining dose display of the device is refined so that the patient can know the specific situation of the remaining dose in time.

[0021] 2. The anti-reversal component is made of one piece, and the transition axle and the units wheel are anti-reversed in one step, preventing the gears in the internal counting components from moving and misaligning due to vibration or shaking when the patient carries the driver daily. The use of a single component not only doubles the stability of the device during use, but also greatly reduces the production cost.

[0022] 3. The counting assembly is integrated into the housing of the counting assembly, which is convenient for the installation and adjustment of the overall counting assembly. If the value displayed by the counting assembly is found to be wrong through the display window during production or use, the overall counting assembly can be simply disassembled to replace or adjust the counting assembly. The gears in the counting assembly are tightly matched and have good transmission performance, so that the counting assembly can adjust the displayed value through external force when the overall counting assembly is assembled.

[0023] 4. The device is compatible with any type of aerosol can. When the patient needs to replace a new aerosol can or an aerosol can of a new dose, he only needs to adjust the displayed value of the counting component and continue to use the same driver, thus saving the patient's treatment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:

[0025] Figure 1 It is a structural exploded diagram of a mechanical counting driver according to a preferred embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the overall appearance of a mechanical counting driver according to a preferred embodiment of the utility model from a rear oblique perspective;

[0027] Figure 3 This is a rear view of the overall appearance of a mechanical counting driver according to a preferred embodiment of the utility model;

[0028] Figure 4 It is a rear view of a mechanical counting driver according to a preferred embodiment of the utility model with the counting component housing removed;

[0029] Figure 5 It is an oblique schematic diagram of the matching structure of the counting assembly according to a preferred embodiment of the utility model;

[0030] Figure 6 It is a side view schematic diagram of the matching structure of the counting assembly according to a preferred embodiment of the utility model;

[0031] Figure 7 It is a schematic diagram of the transmission component structure according to a preferred embodiment of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the units roulette wheel according to a preferred embodiment of the utility model;

[0033] Fig. 9 This is a schematic diagram of the structure of a ten-position roulette wheel according to a preferred embodiment of the utility model;

[0034] Fig.10 This is a schematic diagram of the structure of the hundreds roulette wheel according to a preferred embodiment of the utility model;

[0035] Fig.11 This is a schematic diagram of the transition axle structure according to a preferred embodiment of the utility model;

[0036] Fig.12It is a schematic diagram of the structure of an anti-reversal component according to a preferred embodiment of the utility model;

[0037] Fig.13 It is a side view of the counter assembly and the aerosol can in a normal state according to a preferred embodiment of the utility model;

[0038] Fig.14 It is a side view of the counting assembly cooperating with the aerosol can in a pressed state according to a preferred embodiment of the utility model.

[0039] Wherein: 1-aerosol can, 2-driver, 3-counting assembly, 4-counting assembly housing, 5-resetting component, 6-transmission component, 7-anti-reversal component, 8-units wheel, 9-tens wheel, 10-hundreds wheel, 11-transition wheel shaft, 41-display window, 61-transmission matching card table, 62-resetting component fixing hole, 71-anti-reversal component fixing plate, 72-units wheel anti-reversal spring piece, 73-transition wheel shaft anti-reversal spring piece, 81-special-shaped ratchet, 82-units carry wheel teeth, 91-tens rotating wheel, 92-tens carry wheel, 101-hundreds rotating wheel, 111-transition wheel teeth. DETAILED DESCRIPTION

[0040] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0041] Figures 1 to 12 A preferred embodiment of the mechanical counting driver of the utility model is shown. Similar to the conventional structure, it also includes: a driver 1, an aerosol can 2, a counting assembly 3, a counting assembly housing 4 and other structural parts. Among them:

[0042] like Figures 1 to 3 As shown, the driver includes three openings, one of which is a longitudinal opening for accommodating the aerosol can 2, another is a transverse opening for accommodating the counting assembly 3, and the remaining one is a transverse opening opposite to the counting assembly 3, providing a passage for the aerosol liquid to enter the patient's oral cavity, and the counting assembly housing 4 covers the transverse opening for accommodating the counting assembly 3. From the appearance of the overall mechanical counting driver, it can be seen that a display window 41 is provided on the counting assembly housing 4, through which the numbers shown on the partial axial surfaces of the ones digit wheel 8, the tens digit wheel 9 and the hundreds digit wheel 10 in the internal counting assembly 3 can be observed from the outside.

[0043] like Figure 4-6As shown, the counting assembly 3 can be integrated as a whole and assembled in the internal space after the counting assembly housing 4 and the driver 1 are assembled. Looking at the counting assembly 3 from the rear, the components from right to left are the reset component 5, the transmission component 6, the ones wheel 8, the tens wheel 9 and the hundreds wheel 10, and the transition wheel shaft 11 and the anti-reversal component 7 are arranged non-coaxially with the above components. In this preferred embodiment, the reset component 5 is a torsion spring, one end of which is fixed on the counting assembly housing 4.

[0044] like Figure 7-12 The component structures in the counting assembly 3 are shown respectively. The transmission component 6 is a special-shaped structure, and its upper end arc surface is in contact with the aerosol can 2, so that when the aerosol can 2 is pressed down, the transmission component 6 will rotate a certain angle accordingly. The transmission component 6 is provided with a reset component fixing hole 62, which is used to connect and fix with one end of the reset component 5, to ensure that when the aerosol can 2 completes the rebound, the transmission component 6 will also return to the initial state due to the torque provided by the reset component 5, and be ready for the next counting transmission. A transmission matching card 61 is provided on the inner plane of the transmission component 6, so as to achieve the purpose of using the transmission component 6 to convert the longitudinal movement of the aerosol can 2 under pressure into a circular rotational motion and transmit the rotational motion to the next component.

[0045] A group of numbers 0-9 arranged in sequence are arranged on the circumferential outer axial surface of the ones wheel 8, and a special-shaped ratchet 81 is arranged on the end surface of the ones wheel 8 that contacts the transmission member 6. The inclined pointed platform of the special-shaped ratchet 81 can be closely matched with the transmission matching card platform 61. When the transmission member 6 rotates, the ones wheel 8 will rotate synchronously. The ones carry gear teeth 82 of a non-complete circumferential cycle are arranged on the circumferential outer axial surface of the special-shaped ratchet 81, and the number of teeth of the ones carry gear teeth 82 is greater than or equal to 1.

[0046] A group of numbers 0-9 arranged in sequence are arranged on the circumferential outer axial surface of the tens wheel 9, a tens rotating wheel 91 is arranged on the end surface of the tens wheel 9 that contacts the ones wheel 8, and a tens carry wheel 92 is arranged on the end surface that contacts the hundreds wheel 10. The tens rotating wheel 91 has gear teeth of a complete circumferential cycle, the tens carry wheel 92 has gear teeth of an incomplete circumferential cycle, and the number of teeth of the tens carry wheel 92 is greater than or equal to 1.

[0047] A group of numbers 0-9 arranged in sequence are arranged on the circumferential outer surface of the hundreds wheel 10. The end surface of the hundreds wheel 10 in contact with the tens wheel 9 is a smooth plane, and the other end surface is provided with a hundreds rotating wheel 101. The hundreds rotating wheel 101 has gear teeth with a complete circumferential cycle, and a coaxial column is provided on the surface. The end surface of the column contacts the inner side surface of the counting component housing 4 to prevent excessive gaps between the components and internal sliding deviation.

[0048] Each transition wheel shaft 11 has two sets of transition gear teeth 111, and the transition gear teeth 111 are parallel to each other and have a gap. The overall counting assembly 3 includes two transition wheel shafts 11, one of which has a transition gear 111 that contacts and cooperates with the ones-position carry gear 82 and the tens-position rotating wheel 91, respectively, to complete the transmission operation that the ones-position wheel 8 rotates one circle and the tens-position wheel 9 rotates one-tenth of a circle; the other transition gear 111 contacts and cooperates with the tens-position carry gear 92 and the hundreds-position rotating wheel 101, respectively, to complete the transmission operation that the tens-position wheel 9 rotates one circle and the hundreds-position wheel 10 rotates one-tenth of a circle. The two transition wheel shafts 11 are symmetrically assembled in the counting assembly 3.

[0049] The anti-reversal component 7 is an integrated structure, which can be divided into an anti-reversal component fixing plate 71, an anti-reversal spring plate 72 for the individual digit wheel, and a plurality of anti-reversal spring plates 73 for the transition wheel shaft according to the branches. Two circular holes are arranged side by side on the anti-reversal frame fixing plate 71, which are used to fix the anti-reversal component 7 on the counting component housing 4 with interference fit. The anti-reversal spring plate 72 for the individual digit wheel extends in the horizontal direction and contacts the special-shaped ratchet 81 on the individual digit wheel 8. The side end face of the anti-reversal spring plate 72 for the individual digit wheel is supported on the ratchet step of the special-shaped ratchet 81, preventing the individual digit wheel 8 from rotating counterclockwise due to the transmission component 6 returning to the initial state. The anti-reversal spring plate 73 for the transition wheel shaft extends in the longitudinal direction, and the end face is in an arc shape. The convex end face contacts the transition gear teeth 111 on the transition wheel shaft 11, preventing the transition gear 111 from rotating due to vibration or shaking of the overall mechanical counting driver.

[0050] like Figure 13-14 As shown. When the aerosol can 1 is pressed down, the aerosol can 1 moves in longitudinal translation, which will squeeze the transmission member 6 to make it rotate in a circular motion. Due to the existence of the transmission matching card platform 61, the rotation of the transmission member 6 will synchronously transmit and drive the ones wheel 8 to rotate. When the ones wheel 8 rotates one circle, the ones carry gear 82 contacts and transmits once with a transition gear 111, driving a transition wheel shaft 11 to rotate. At this time, another transition gear 111 on the transition wheel shaft 11 that contacts the tens rotating wheel 91 rotates synchronously, driving the tens wheel 9 to rotate one tenth of a circle. When the tens wheel 9 rotates one circle, the tens carry gear 92 contacts and transmits once with a transition gear 111, driving another transition wheel shaft 11 to rotate. At this time, another transition gear 111 on the transition wheel shaft 11 that contacts the hundreds rotating wheel 101 rotates synchronously, driving the hundreds wheel 10 to rotate one tenth of a circle.

[0051] When the aerosol can 1 completes the pressing action and returns to the initial state, the reset member 5 provides a torque to drive the transmission member 6 to return to the initial state. Since the inclined surface contacts the special-shaped ratchet wheel 8 when the transmission member 6 rotates counterclockwise, the individual digit wheel 8 will not rotate synchronously with the counterclockwise rotation of the transmission member 6 under the support and fixation of the anti-reversal spring 72 of the individual digit wheel. The reset member 5 adopts a torsion spring structure, so that the transmission member 6 can compress the spring to a certain extent during the reset process, so that the reset process is smooth and fluent, and after the reset of the transmission member 6 is completed, the reset member 5 is re-expanded to avoid excessive gaps between the components and internal sliding deviation.

[0052] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the position or location relationship are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0053] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical counting driver, comprising an aerosol can, a driver, a counting assembly and a counting assembly housing, wherein: The driver body is L-shaped and has three openings, namely a longitudinal opening for accommodating the aerosol can, a transverse opening for accommodating the counting assembly, and a transverse opening opposite to the counting assembly and providing a channel for the aerosol liquid to enter the patient's oral cavity; the counting assembly includes a reset component, a transmission component, an anti-reversal component and a gear set, and the gear set includes a unit wheel, a tens wheel, a hundreds wheel and a plurality of transition wheel shafts; It is characterized in that the counting component is integrated and accommodated in the counting component housing, and a display window is provided on the counting component housing, through which partial axial surfaces of the ones digit wheel, the tens digit wheel and the hundreds digit wheel can be observed from the outside.

2. The mechanical counting driver according to claim 1, characterized in that: The transition wheel shaft has two groups of transition gear teeth, the transition gear teeth are parallel to each other and have a gap, and the transition wheel shaft is an integrated structure.

3. The mechanical counting driver according to claim 1, characterized in that: A group of sequentially arranged numbers 0-9 are arranged on the circumferential outer axial surface of the units wheel disc, a coaxial special-shaped ratchet is arranged on the end face of one side of the units wheel disc, and units carry gear teeth are arranged on the partial circumferential outer axial surface of the special-shaped ratchet. The number of the units carry gear teeth is greater than or equal to 1 and is not arranged around the special-shaped ratchet for a whole circle, and the other end face of the units wheel disc is a smooth plane.

4. The mechanical counting driver according to claim 3, characterized in that: The anti-reversal component is a one-piece structure, which can be divided into three parts: an anti-reversal component fixing plate, an anti-reversal spring sheet for the individual digit wheel disc, and an anti-reversal spring sheet for the transition wheel shaft. A plurality of parallel holes are arranged in the center of the anti-reversal component fixing plate to fix the anti-reversal component on the counting component housing, the anti-reversal spring sheet for the individual digit wheel disc is in contact with the special-shaped ratchet, and the anti-reversal spring sheet for the transition wheel shaft is in contact with the transition wheel shaft.

5. The mechanical counting driver according to claim 4, characterized in that: A group of sequentially arranged numbers 0-9 are arranged on the circumferential outer axis surface of the tens wheel, a tens rotating wheel is arranged on one end surface of the tens wheel, the tens rotating wheel is coaxial with the tens wheel and has a complete circle of gears, a tens carry wheel is arranged on the other end surface of the tens wheel, the tens carry wheel is coaxial with the tens wheel and has a number of teeth greater than or equal to 1, and the teeth of the tens carry wheel are not arranged around the entire circle of the tens carry wheel.

6. The mechanical counting driver according to claim 5, characterized in that: A group of sequentially arranged numbers 0-N are arranged on the circumferential outer axis surface of the hundreds wheel, N is a number greater than 1, and a hundreds rotating wheel is arranged on one end surface of the hundreds wheel. The hundreds rotating wheel is coaxial with the hundreds wheel and has a complete circle of gears, and the other end surface of the hundreds wheel is a smooth plane.

7. The mechanical counting driver according to claim 6, characterized in that: The intervals between each adjacent number on the axis surfaces of the ones wheel, the tens wheel and the hundreds wheel are the same in size.

8. The mechanical counting driver according to claim 6, characterized in that: The transmission component is in an irregular shape, and a transmission matching clamping platform is arranged on a plane on one side of the transmission component. The transmission matching clamping platform is in the shape of an irregular protrusion that can be matched with the irregular ratchet.

9. The mechanical counting driver according to claim 1, characterized in that: One end of the reset member is fixed to the side wall inside the housing of the counting component, and the other end is fixed to the transmission member. When the transmission member and the counting component are twisted and offset at a corresponding angle, the reset member provides a torque sufficient to return to the initial state.

10. The mechanical counting driver according to claim 9, characterized in that The reset component adopts a torsion spring structure.

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