CN220526351U - Counting mechanism of spraying device and spraying device - Google Patents

Abstract

The utility model relates to a counting mechanism of a spraying device and the spraying device, wherein the counting mechanism comprises: a counting disc, one side of which is provided with a gear part; a ratchet member including a first ratchet portion and an eccentric coaxially disposed, the eccentric being adapted to engage the gear portion; a first pawl member for connection to a button member of the spraying device, the first pawl member and the first ratchet portion cooperating; when the button piece moves under external force to trigger the spraying device to spray, the first pawl piece moves synchronously and drives the ratchet piece to rotate, and the eccentric wheel can intermittently drive the counting disc to rotate so as to realize counting. The counting mechanism provided by the utility model has a simple and small overall structure and is convenient to operate.

Description

Counting mechanism of spraying device and spraying device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a counting mechanism of an injection device and the injection device.

Background

The atomizing spraying device is a structure capable of atomizing and spraying liquid, and when the atomizing spraying device is used for atomizing a medicine, the medicine is sprayed into atomized particles and sprayed on the affected parts such as the oral cavity, the nasal cavity, eyes and the skin surface, and the like, so that the atomizing spraying device has great effects on the absorption and the curative effect of the medicine. The need to replenish the medication or replace the medication containing bottle or the aerosolization device in time before the medication is exhausted may otherwise affect the continued administration of the medication to the user.

The existing atomizing spraying device is usually provided with a counting mechanism for automatically counting, so that a user can conveniently master the current residual medicine supply times. The counting mechanism in the current market mainly comprises an electronic counting mechanism and a mechanical counting mechanism, wherein the electronic counting mechanism is displayed in an electronic display mode, but a power supply module and a sensor for capturing execution actions are required to be equipped, so that the cost and the size are not easy to control, and the counting mechanism is not suitable for medical devices with short service periods. And as for the mechanical counting mechanism, as the counting capacity requirement increases, the whole size of the mechanical counting assembly is large, the structure is complex, and the miniaturization design of the whole medical device is not facilitated.

Disclosure of Invention

Based on the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a counting mechanism of an injection device, which has a simple and compact overall structure and is easy to count.

Therefore, the utility model provides the following technical scheme.

The present utility model provides a counting mechanism of an injection device, comprising:

a counting disc, one side of which is provided with a gear part;

a ratchet member including a first ratchet portion and an eccentric coaxially disposed, the eccentric being adapted to engage the gear portion;

a first pawl member for connection to a button member of the spraying device, the first pawl member and the first ratchet portion cooperating;

when the button piece moves under external force to trigger the spraying device to spray, the first pawl piece moves synchronously and drives the ratchet piece to rotate, and the eccentric wheel can intermittently drive the counting disc to rotate so as to realize counting.

Preferably, the counting mechanism comprises a second pawl;

the ratchet member includes a second ratchet portion having a ratchet tooth oriented in the same direction as the ratchet tooth of the first ratchet portion and cooperating with the second pawl member.

Preferably, the two first ratchet parts are respectively positioned at two sides of the second ratchet part.

Preferably, the counting disk is provided with an indication portion on the outer peripheral side.

Preferably, the indication part includes a plurality of different color indication areas, and the corresponding used times interval is indicated by the color indication areas.

The present utility model also provides an injection device comprising:

a button member movable to trigger the spraying device to spray and aspirate;

the counting mechanism of the spraying device as described above.

Preferably, the first pawl member is integrally formed with the button member.

Preferably, a housing is also included, the second pawl of the counting mechanism being connected to the housing.

Preferably, the second pawl is integrally formed with the housing.

Preferably, the counting device further comprises a shell, wherein the shell is provided with an indication port, and the indication port is used for watching the counting result of the counting disc.

The utility model has the following technical effects:

the utility model provides a counting mechanism of an injection device, which is provided with a ratchet part and a first pawl part to form a driving assembly for driving counting rotation, and the counting mechanism has a simple and small integral structure. The first pawl and the button piece synchronously move, and when the user triggers spraying and liquid suction through the button piece, the rotation of the eccentric wheel is synchronously triggered, so that the operation is simple and convenient. In addition, every round of rotation of the eccentric wheel can mesh with the gear part of the counting disc once, and the counting disc intermittently rotates in the process of one round of rotation of the eccentric wheel, so that the total rotation times of the counting disc can be reduced, the driving load of the ratchet wheel part is reduced, the external force required by the movement of the button part is reduced, and the operation of a user is facilitated.

Drawings

FIG. 1 is a schematic view of a partial perspective view of a spraying device according to the present utility model;

FIG. 2 is an exploded view of the structure of the counting mechanism of the present utility model;

FIG. 3 is a schematic perspective view of a counting mechanism according to the present utility model;

FIG. 4 is a schematic diagram of an exploded construction of the spraying device of the present utility model;

FIG. 5 is a schematic view of a partial perspective view of a spraying device according to the present utility model;

FIG. 6 is a schematic view of a partial perspective view of a spray device according to the present utility model;

fig. 7 is a schematic perspective view of a second housing according to the present utility model;

FIG. 8 is a schematic diagram of the assembled structure of the second housing and the counting disk of the present utility model;

fig. 9 is a schematic perspective view of the spraying device of the present utility model.

Description of the reference numerals

100. A spraying device;

1. an actuating mechanism; 2. a pump body assembly; 4. a button member;

6. a housing; 61. a first housing; 613. an outlet; 616. an indication port; 6171. a first clamping protrusion; 62. a second housing; 621. a second clamping protrusion; 627. a first mounting bracket; 6271. a mounting hole; 628. a second mounting bracket; 6281. a first support rib; 62811. a first fastening structure; 6282. a second support rib; 62821. a second fastening structure; 63. A mounting ring;

71. a mounting bracket; 72. A receiving bottle;

8. a counting mechanism;

85. a counting plate; 851. a gear portion; 852. an instruction unit; 853. a rotating shaft;

86. a ratchet member; 861. a first ratchet portion; 862. an eccentric wheel; 8621. a wheel axle; 8622. a wheel body; 863. a second ratchet portion;

87. a first pawl;

88. a second pawl.

Detailed Description

In order to make the technical scheme and the beneficial effects of the utility model more obvious and understandable, the following detailed description is given by way of example. Unless defined otherwise, technical and scientific terms used herein have the same meaning as technical and scientific terms in the technical field to which this application belongs.

In the description of the present utility model, unless explicitly defined otherwise, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., refer to an orientation or positional relationship based on that shown in the drawings, and are merely for convenience of simplifying the description of the present utility model, and do not indicate that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, i.e., are not to be construed as limiting the present utility model.

In the present utility model, the terms "first", "second" are used for descriptive purposes only and are not to be construed as relative importance of the features indicated or the number of technical features indicated. Thus, a feature defining "first", "second" may explicitly include at least one such feature. In the description of the present utility model, "plurality" means at least two; "plurality" means at least one; unless otherwise specifically defined.

In the present utility model, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, unless otherwise specifically limited. For example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless explicitly defined otherwise, a first feature "on", "above", "over" and "above", "below" or "under" a second feature may be that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact via an intermediary. Moreover, a first feature "above," "over" and "on" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the level of the first feature is higher than the level of the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the level of the first feature is less than the level of the second feature.

The references to "upper" and "lower" in this utility model are both made to the designation in fig. 1.

The spraying device of the present utility model will be described in detail with reference to fig. 1 to 9.

In the present embodiment, as shown in fig. 1 to 4, the spraying device 100 includes a mounting bracket 71, a containing bottle 72, a pump body assembly 2, a nozzle assembly (not shown in the drawings), a button member 4, and a counting mechanism 8, and the button member 4 is movable to trigger spraying and pipetting of the spraying device 100. The holding bottle 72 is installed in the installing support 71, and pump body assembly 2 is connected with installing support 71 and nozzle subassembly respectively, and nozzle subassembly includes the spout, and button piece 4 takes place to move under external force and can trigger pump body assembly 2 operation to spray from the mouth department after pumping into nozzle subassembly with liquid, then button piece 4 resets, makes pump body assembly 2 inhale liquid from holding bottle 72 in, in order to wait to jet next time.

As shown in fig. 1-3, the counting mechanism 8 includes a counting disk 85, a ratchet member 86 and a first pawl 87. One side of the counting disc 85 is provided with a gear part 851, and the ratchet member 86 comprises a first ratchet part 861 and an eccentric 862 coaxially arranged, the eccentric 862 being adapted to engage with the gear part 851. The first pawl 87 is configured to be coupled to the button member 4 of the spraying device 100 and the first pawl 87 mates with the first ratchet portion 861. When the button member 4 is moved by an external force to trigger the spraying device 100 to spray, the first pawl member 87 moves synchronously, and the moving first pawl member 87 can drive the ratchet member 86 to rotate due to the cooperation of the first pawl member 87 and the first ratchet portion 861, and the counting disc 85 rotates together with the eccentric 862 when the eccentric 862 and the gear portion 851 are engaged, thereby achieving counting.

By adopting the above technical solution, the ratchet member 86 and the first pawl member 87 are provided to constitute a driving assembly for driving the counting disc 85 to rotate, and the counting mechanism 8 is simple and compact in overall structure. The first pawl 87 moves in synchronism with the button member 4 and the user simultaneously triggers rotation of the cam 862 when spraying and pipetting are triggered by the button member 4, which is easy to operate. Furthermore, due to the structural limitation of the eccentric 862, the eccentric 862 is engaged with the gear portion 851 of the counting disk 85 once every one rotation, and when the eccentric 862 and the gear portion 851 are in a non-engaged state, the eccentric 862 rotates and the counting disk 85 is not moved during the movement of the button member 4; when the eccentric wheel 862 is meshed with the gear portion 851 in the rotating process, the counting disc 85 is stirred once, namely, the counting disc 85 rotates by one gear tooth, the counting disc 85 is intermittently rotated, the total rotation times of the counting disc 85 can be reduced, the driving load of the ratchet wheel member 86 can be reduced, the external force required by the movement of the button member 4 is further reduced, and the operation of a user is facilitated.

It will be appreciated that the total number of revolutions of the eccentric 862 corresponds to the total number of actual uses of the injection device 100, and that each count of the count disk 85 represents the corresponding actual number of uses per revolution of the eccentric 862.

In one embodiment, as shown in fig. 2, the eccentric 862 includes an axle 8621 and a wheel 8622, the wheel 8622 being connected to one side of the axle 8621, the axle 8621 and the first ratchet portion 861 being coaxially arranged. When the first ratchet portion 861 rotates, the wheel shaft 8621 rotates synchronously with the first ratchet portion 861, and at this time, the wheel body 8622 rotates around the wheel shaft 8621. During one rotation of the wheel body 8622, the position of the wheel body 8622 in the circumferential direction of the counting disk 85 is changed, so that the wheel body 8622 is engaged with the gear portion 851 of the counting disk 85 once when the wheel body 8622 rotates one rotation, and the wheel body 8622 moves over the corresponding gear teeth of the gear portion 851 to rotate one gear tooth angle. The eccentric 862 is simple and compact in structure, and is advantageous in the miniaturization design of the counting mechanism 8 while being capable of reducing the total number of rotations of the counting disk 85.

In one embodiment, as shown in fig. 1 and 4, the button member 4 is a housing structure, which is housed in the upper portion of the pump body assembly 2, and the containing bottle 72 is located in the lower portion of the pump body assembly 2, and the button member 4 is pressed downward to trigger spraying, so as to fit the use habit of the user. Of course, the setting position of the button member 4 is not limited to this, and may be set on any side of the pump body assembly 2, for example, set on the lower portion of the pump body assembly 2, and when the user uses the spraying device 100, the bottom of the button member 4 may be placed on a surface (such as a table top) of an object, and the top surface of the spraying device 100 may be pressed downward, so that spraying may be triggered.

In one embodiment, as shown in fig. 1, 4 and 9, the spraying device 100 further includes a housing 6, the button member 4 is partially located in the housing 6, and a portion of the button member 4 exposed to the housing 6 is used for being pressed by a user.

Further, as shown in fig. 4 and 9, in order to facilitate assembly of the internal components, the housing 6 includes a first housing 61 and a second housing 62, the first housing 61 and the second housing 62 being detachably connected, the first housing 61 constituting a housing profile of the front face of the spraying device 100, the second housing 62 constituting a housing profile of the rear face of the spraying device 100, the first housing 61 being provided with an outlet 613, the spout of the nozzle assembly being located opposite to the outlet 613.

Further, as shown in fig. 4 and 9, the housing 6 includes a mounting ring 63, and a bottom end of the mounting ring 63 is provided with a clamping groove. The top end of the first housing 61 is provided with a first clamping protrusion 6171, the top end of the second housing 62 is provided with a second clamping protrusion 621, and after the first housing 61 and the second housing 62 are assembled, the first clamping protrusion 6171 and the second clamping protrusion 621 together form an annular protrusion, and the mounting ring 63 is clamped on the annular protrusion to strengthen the connection between the first housing 61 and the second housing 62. Of course, the first and second engaging protrusions 6171 and 621 and the mounting ring 63 may not be provided, and the top portions of the first and second housings 61 and 62 may be integrally formed and formed with an opening that can accommodate the button member 4.

Further, as shown in fig. 4, the spraying device 100 further includes an actuating mechanism 1, the button member 4 is slidably connected to the housing 6, and the button member 4 is located above the actuating mechanism 1 and connected to the actuating mechanism 1. The button 4 is pressed downwards, the button 4 moving downwards triggers the actuating mechanism 1, the actuating mechanism 1 drives the pump body assembly 2 to operate for spraying, and when the external force is removed, the button 4 can be reset under the cooperation of the actuating mechanism 1. Further, the pump body assembly 2 includes a pump body including a first pump port connected with the nozzle through a check valve, a second pump port connected with the housing bottle 72 through a check valve, and a third pump port, and a piston rod (not shown in the drawing) slidably fitted in the cavity of the pump body through the third pump port. The actuating mechanism 1 at least comprises an actuating member, an elastic member and a connecting member (not shown in the figure), wherein the actuating member is used for driving the connecting member to reciprocate in a linear motion; one end of the elastic piece is abutted against the actuating piece, and the other end of the elastic piece is in an abutting state; the connecting piece is connected with the piston rod. When the spraying device 100 is used, the button piece 4 moves under the pressing, the button piece 4 presses on the actuating piece to drive the actuating piece to move, the actuating piece drives the connecting piece to move, and the connecting piece drives the piston rod to synchronously move; when the button member 4 is pushed to drive the actuating member to move, the elastic member is compressed by the actuating member, and when the external force is removed, the elastic member is reset to reset the button member 4, the actuating member and the connecting member. By driving one end of the piston rod to move in the cavity of the pump body by the actuating mechanism 1, the space in the cavity of the pump body can be changed, so that the pump body sprays from the nozzle or absorbs liquid from the accommodating bottle 72.

It should be understood that the structure of the actuating mechanism 1 is not limited thereto, but may be any existing mechanism that can achieve linear reciprocating drive, such as a lead screw nut mechanism.

In one embodiment, as shown in fig. 1 and 4, the pump body assembly 2 is located on one side of the counting disk 85, the ratchet 86 is located on the upper portion of the other side of the counting disk 85, and the pump body assembly 2 and the counting mechanism 8 are compactly arranged.

In one embodiment, as shown in fig. 4 to 8, the actuation mechanism 1, the pump body assembly 2 and the counter mechanism 8 are all mounted to the second housing 62. For easy assembly and disassembly, the second housing 62 is provided with a clamping groove (not shown in the figure) to which the actuating mechanism 1 and the pump body assembly 2 are clamped. As shown in fig. 1, 5 to 8, the second housing 62 is provided with a first mounting seat 627 and a second mounting seat 628, the first mounting seat 627 is provided with a mounting hole 6271, and the ratchet 86 is rotatably provided in the mounting hole. The second mounting support 628 comprises a first supporting rib 6281 and a second supporting rib 6282 which are arranged in parallel, the first supporting rib 6281 is provided with a first buckling structure 62811, the second supporting rib 6282 is provided with a second buckling structure 62821, two ends of the rotating shaft 853 of the counting disc 85 are respectively buckled with the first buckling structure 62811 and the second buckling structure 62821, and the counting disc 85 is convenient to assemble and disassemble.

Further, as shown in fig. 5 and 7, the second support rib 6282 also constitutes a groove wall on one side of the card groove for mounting the pump body assembly 2, so that the pump body assembly 2 and the counter mechanism 8 are assembled compactly.

In one embodiment, when the spraying device 100 is in an unused state, the first pawl 87 and the first ratchet portion 861 are not in contact, leaving a space between the first pawl 87 and the first ratchet portion 861 such that the count is not triggered when the user mistakenly touches the button member 4 but does not trigger a spray.

In one embodiment, as shown in fig. 1, the counting mechanism 8 includes a second pawl 88; the ratchet member 86 includes a second ratchet portion 863, the orientation of the ratchet teeth of the second ratchet portion 863 being the same as the orientation of the ratchet teeth of the first ratchet portion 861. The second ratchet portion 863 cooperates with the second pawl 88 such that the second pawl 88 abuts against the ratchet teeth of the second ratchet portion 863 to prevent the ratchet member 86 from reversing and affecting the accuracy of the count plate 85.

Further, as shown in fig. 1, two first ratchet portions 861 are respectively located at two sides of the second ratchet portion 863, two first pawls 87 are respectively located at two sides of the second ratchet portion 863, and the two first pawls 87 are matched with the two first ratchet portions 861 one by one, so that forces exerted by the two first pawls 87 on the ratchet members 86 are balanced, and the position of the ratchet members 86 is prevented from being shifted due to imbalance of long-term stress, and driving of the eccentric wheel 862 to the counting disc 85 is affected.

Further, as shown in fig. 2 and 3, the thickness of the first ratchet part 861 is smaller than the thickness of the second ratchet part 863, and the width of the first pawl 87 is smaller than the width of the second pawl 88, so that the stability of the engagement of the ratchet member 86 with the first pawl 87 and the second pawl 88 can be ensured while facilitating the miniaturization design of the counting mechanism 8.

In one embodiment, the first ratchet portion 861 includes five ratchet teeth, with the ratchet member 86 advancing one ratchet tooth per injection of the injection device 100, i.e., the ratchet member 86 rotates 72 °. Each rotation of the ratchet member 86 indicates five uses of the spraying device 100, at which time the counter plate 85 rotates once.

In one embodiment, as shown in fig. 2 and 3, an indication part 852 is provided on the outer peripheral side of the counting disc 85 for counting, and the counting disc 85 has a simple structure.

Further, the indication unit 852 includes a plurality of different color indication areas, and the color indication areas indicate the corresponding remaining usage frequency intervals to realize fuzzy counting. For example, the indication part 852 includes a green indication area and a red indication area, and the green indication area has a length greater than that of the red indication area. When the spraying device 100 starts to be used, a green indication area is seen by the user. The green indication area indicates that the current residual use frequency interval has more times and can be used freely; the red indication area indicates that the number of times in the current remaining use time interval is smaller, and the user needs to pay attention to timely replacement or replenishment of the liquid in the containing bottle.

Of course, the structure of the indication portion 852 is not limited thereto, and may be configured as a scale indication or a text indication to achieve accurate counting.

In an embodiment, as shown in fig. 3, the gear portion 851 is disposed inside the counting disc 85, and the gear portion 851 is of an internal gear structure, and the gear portion 851 is hidden, so that the user cannot see the gear portion 851 when watching the indication portion 852, and the experience of the user during use is improved.

In one embodiment, as shown in fig. 1, the first pawl 87 is integrally formed with the button member 4 to simplify assembly of the two. Of course, the connection of the first pawl 87 and the button member 4 is not limited thereto, and the first pawl 87 may be a separate component that is mounted to the button member 4 by other means of a snap fit or a fastener connection.

In one embodiment, as shown in fig. 1, the second pawl 88 of the counting mechanism 8 is connected to the housing 6.

Further, the second pawl 88 is integrally formed with the housing 6 to simplify assembly of the two. Of course, the connection of the second pawl 88 to the housing 6 is not limited thereto and the second pawl 88 could be a separate component that is mounted to the housing 6 by other means of attachment such as a snap fit or a fastener connection.

In one embodiment, as shown in fig. 4 and 9, the housing 6 is provided with an indication port 616, and the indication port 616 is used to view the counting result of the counting disk 85.

Further, an indication port 616 and an outlet port 613 are provided on the first housing 61 for use by a user.

It should be understood that the above examples are illustrative and are not intended to encompass all possible implementations encompassed by the claims. Various modifications and changes may be made in the above embodiments without departing from the scope of the disclosure. Likewise, the individual features of the above embodiments can also be combined arbitrarily to form further embodiments of the utility model which may not be explicitly described. Therefore, the above examples merely represent several embodiments of the present utility model and do not limit the scope of protection of the patent of the present utility model.

Claims (10)

1. A counting mechanism of an injection device, characterized in that the counting mechanism (8) comprises:

a counting plate (85) provided with a gear part (851) on one side;

a ratchet member (86) comprising a first ratchet portion (861) and an eccentric (862) coaxially arranged, said eccentric (862) being adapted to engage with said gear portion (851);

a first pawl (87) for connection to a button member (4) of the ejection device (100), the first pawl (87) and the first ratchet portion (861) cooperating;

wherein when the button member (4) moves under an external force to trigger the spraying device (100) to spray, the first pawl member (87) synchronously moves and drives the ratchet member (86) to rotate, and the eccentric wheel (862) can intermittently drive the counting disc (85) to rotate so as to realize counting.

2. A counting mechanism according to claim 1, characterized in that the counting mechanism (8) comprises a second pawl (88);

the ratchet member (86) includes a second ratchet portion (863) having a ratchet tooth oriented in the same direction as the ratchet tooth of the first ratchet portion (861) and cooperating with the second pawl (88).

3. The counting mechanism according to claim 2, wherein the number of the first ratchet parts (861) is two, and the first ratchet parts are respectively located at two sides of the second ratchet part (863).

4. A counting mechanism according to any one of claims 1-3, characterized in that the outer peripheral side of the counting disc (85) is provided with an indication part (852).

5. The counting mechanism according to claim 4, wherein the indication portion (852) comprises a plurality of different color indication areas by which the corresponding used number of times interval is indicated.

6. An ejector device, comprising:

a button member (4), said button member (4) being movable to trigger a spraying device (100) to spray and aspirate;

a counting mechanism for an injection device according to any one of claims 1 to 5.

7. The spraying device according to claim 6, characterized in that the first pawl member (87) is integrally formed with the button member (4).

8. The spraying device according to claim 6, further comprising a housing (6), the second pawl (88) of the counting mechanism (8) being connected to the housing (6).

9. The spraying device according to claim 8, characterized in that the second pawl (88) is integrally formed with the housing (6).

10. The spraying device according to claim 6, further comprising a housing (6), said housing (6) being provided with an indication opening (616), said indication opening (616) being used to view the counting result of said counting disc (85).