CN220526352U - 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, comprising: a counting component for counting; the gear can trigger the counting assembly to count when rotating; the first engagement block and the second engagement block are both connected with a button piece of the spraying device; the first meshing blocks and the second meshing blocks are sequentially distributed along the direction of the central axis of the gear, and the first meshing blocks and the second meshing blocks are arranged in a staggered manner along the circumferential direction of the gear; when the spraying device is in an initial state, the gear is meshed with the first meshing block, and the second meshing block is opposite to one gear tooth of the gear; when the button piece moves linearly under the action of external force to trigger the spraying device to spray, the gear is meshed with the second meshing block; when the button member is reset to trigger the spraying device to suck liquid, the gear wheel is meshed with the first meshing block, so that the gear wheel rotates in one direction to trigger the counting assembly. The counting mechanism is simple and convenient to operate, and simple and compact in structure.

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. For the mechanical counting mechanism, the existing mechanical counting mechanism has a complex structure, so that the overall size of the atomizing spraying device is increased, and the cost is increased.

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 structure and is easy to operate.

Therefore, the utility model provides the following technical scheme.

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

a counting component for counting;

a gear capable of triggering the counting assembly to count when rotated;

a first engagement block and a second engagement block, both of which are connected with a button member of the injection device; the first meshing blocks and the second meshing blocks are sequentially distributed along the direction of the central axis of the gear, and the first meshing blocks and the second meshing blocks are arranged in a staggered manner along the circumferential direction of the gear;

wherein when the injection device is in an initial state, the gear is meshed with the first meshing block, and the second meshing block is opposite to one gear tooth position of the gear;

when the button piece moves linearly under the action of external force to trigger the spraying device to spray, the gear is meshed with the second meshing block; when the button member is reset to trigger the spraying device to absorb liquid, the gear wheel is meshed with the first meshing block, so that the gear wheel rotates in one direction to trigger the counting assembly.

Preferably, the counting assembly comprises a screw rod and an indicator, one end of the screw rod is coaxially connected with the gear, and the indicator is in threaded connection with the screw rod;

when the gear rotates, the gear can drive the screw rod to rotate, so that the indicator piece moves unidirectionally along the axial direction of the screw rod.

Preferably, a first guide inclined plane is arranged at one end of the second engagement block facing the first engagement block;

wherein when the button member moves to trigger the ejection, the first guiding inclined surface is used for guiding and pushing the gear to rotate so as to be engaged with the second engagement block.

Preferably, a second guide inclined plane is arranged at one end of the first engagement block facing the second engagement block;

when the button piece is reset, the second guide inclined surface is used for guiding and pushing the gear to rotate so as to be meshed with the first meshing block.

Preferably, a third guiding inclined plane is arranged at one end of the gear teeth of the gear, which faces the second meshing block, and the third guiding inclined plane and the first guiding inclined plane are matched to guide the gear to rotate.

The present utility model also provides an injection device comprising:

a button member that is linearly movable to trigger the spraying device to spray and suck liquid;

the counting mechanism of the spraying device as described above.

Preferably, the counting assembly further comprises a housing provided with a window extending in the axial direction of the screw of the counting assembly.

Preferably, the housing is provided with an indicator, which is arranged on one side of the window.

Preferably, the device further comprises a shell, the gear is rotatably connected to the shell, the screw rod of the counting assembly is rotatably connected to the shell, and the indicator of the counting assembly abuts against the shell.

Preferably, the inner wall of one side of the button piece is provided with an arc surface, the arc surface is in clearance fit with the gear, and the first engagement block and the second engagement block are respectively connected with the arc surface.

Preferably, the first engagement block and the second engagement block are integrally formed with the button member.

The utility model has the following technical effects:

the utility model provides a counting mechanism of a spraying device, which is characterized in that a first meshing block and a second meshing block are arranged and the position relation of the first meshing block and the second meshing block is limited, so that in the process of moving a button piece, the first meshing block and the second meshing block are meshed with a gear in turn to guide the gear to rotate along one direction, and then the counting assembly is triggered to start counting through the rotation of the gear. The gear, the first meshing block and the second meshing block are matched to form a driving assembly of the counting mechanism, so that the counting mechanism is simple and convenient to operate, simple and small in structure and beneficial to reducing the overall size of the counting mechanism.

Drawings

FIG. 1 is an exploded view of the assembly of the counting mechanism and button member of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an exploded view of a partial structure of the spraying device of the present utility model;

FIG. 4 is a schematic view of a partial perspective view of the spraying device of the present utility model;

fig. 5 is a front view of the spraying device of the present utility model.

Description of the reference numerals

100. A spraying device;

4. a button member; 41. a cambered surface;

6. a housing; 6141. a window; 6142. an indication mark; 6151. a first mounting portion; 6152. a second mounting portion; 6153. a third mounting portion;

8. a counting mechanism;

81. a counting assembly; 811. a screw; 8111. a threaded portion; 8112. a light shaft portion; 812. an indicator; 8121. an abutting portion;

82. a gear; 821. Gear teeth; 8211. A third guide slope;

83. a first engagement block; 831. A second guide slope;

84. a second engagement block; 841. a first guide slope.

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 5.

In the present embodiment, as shown in fig. 1 and 2, the spraying device 100 includes a housing bottle (not shown), a pump body assembly (not shown), a nozzle assembly (not shown), a button member 4, and a counting mechanism 8, and the button member 4 is capable of rectilinear movement to trigger the spraying device 100 to spray and suck liquid. The pump body component is connected with the accommodating bottle and the nozzle component respectively, the nozzle component comprises a nozzle, the button component 4 can trigger the pump body component to operate after being linearly moved under external force so as to spray liquid from the nozzle after being pumped into the nozzle component, and then the button component 4 is reset, so that the pump body component can suck liquid from the accommodating bottle to be sprayed next time.

As shown in fig. 1 and 2, the counting mechanism 8 includes a counting assembly 81, a gear 82, a first engagement block 83 and a second engagement block 84, wherein the counting assembly 81 is used for counting, and the gear 82 can trigger the counting assembly 81 to count when rotating. The first engagement block 83 and the second engagement block 84 are each connected to the button member 4 of the spraying device 100 such that the first engagement block 83 and the second engagement block 84 can move along with the button member 4. The first engagement blocks 83 and the second engagement blocks 84 are distributed in sequence along the direction of the central axis of the gear 82, and the first engagement blocks 83 and the second engagement blocks 84 are arranged in a staggered manner along the circumferential direction of the gear 82. When the spraying device 100 is in the initial state, the gear 82 is engaged with the first engagement block 83, and the second engagement block 84 is positioned opposite to one gear tooth of the gear 82.

When the button member 4 moves under the external force to trigger the spraying device 100 to spray, the first engagement block 83 and the second engagement block 84 move along with the button member 4, the first engagement block 83 is disengaged from the gear 82, the second engagement block 84 moves to be in contact with one tooth of the gear 82, and the gear 82 rotates under the pressing force of the second engagement block 84 until the gear 82 and the second engagement block 84 are engaged. When the button member 4 is reset by the reverse movement to trigger the ejection device 100 to suck liquid, the second engagement block 84 is disengaged from the gear 82, the first engagement block 83 moves to contact with one tooth of the gear 82, and the gear 82 rotates under the pressing force of the first engagement block 83 until the gear 82 and the first engagement block 83 are engaged. When the button member 4 is moved to trigger one ejection and one suction, the first engagement block 83 and the second engagement block 84 cooperate to cause the gear 82 to rotate in one direction to trigger the counting assembly 81.

By adopting the above technical scheme, through setting up the first engagement piece 83 and the second engagement piece 84 and limiting the positional relationship of the two, make in the motion of button piece 4, through the meshing of first engagement piece 83 and second engagement piece 84 with gear 82 in turn, guide gear 82 to rotate along a direction, the rotation of rethread gear 82 triggers counting assembly 81 and begins the count. The gear 82, the first engagement block 83 and the second engagement block 84 cooperate together to form a driving assembly of the counting mechanism 8, which is simple and compact in structure and beneficial to reducing the overall size of the counting mechanism 8.

In one embodiment, as shown in fig. 1 and 3, the button member 4 is a housing structure, which is housed in the upper portion of the pump body assembly, and the button member 4 is pressed downward to trigger spraying, so as to fit the usage 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, for example, on the lower portion of the pump body assembly, so that when the user uses the spraying device 100, the bottom of the button member 4 may be placed on the surface (e.g. the 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, the spraying device 100 further includes a housing 6, the button member 4 is partially located in the housing 6, and the button member 4 is exposed to the housing 6 for being pressed by a user.

Further, the spraying device 100 further comprises an actuating mechanism (not shown in the figure), the button member 4 is slidably connected to the housing 6, the button member 4 is connected to the actuating mechanism, the button member 4 can move downward under the action of the actuating mechanism to trigger spraying, and when the external force is removed, the button member 4 can be reset under the action of the actuating mechanism.

Further, the actuating mechanism at least comprises an elastic member, the button member 4 is compressed under the pressing, and when the external force is removed, the elastic member is reset to reset the button member 4.

In one embodiment, as shown in fig. 1 to 4, the counting assembly 81 includes a screw 811 and an indicator 812, one end of the screw 811 is coaxially connected with the gear 82, the indicator 812 is screw-coupled to the screw 811, and the button member 4 moves in the axial direction of the screw 811. When the gear 82 rotates, the gear 82 can drive the screw 811 to synchronously rotate, the indicator 812 is limited so that the indicator 812 cannot rotate along with the screw 811, and then in the process of rotating the screw 811, the indicator 812 moves unidirectionally along the axial direction of the screw 811, the position of the indicator 812 changes, and counting is achieved through the position of the indicator 812.

In one embodiment, as shown in fig. 1 and 2, the end of the second engagement block 84 facing the first engagement block 83 is provided with a first guide slope 841. When the button member 4 moves downward to trigger the ejection, the second engagement block 84 moves downward until the first guide slope 841 contacts one of the gear teeth 821 of the gear 82, and during continued downward movement of the second engagement block 84, the gear tooth 821 moves along the first guide slope 841, and the first guide slope 841 pushes the gear tooth 821 to rotate, thereby rotating the gear 82 so that the second engagement block 84 enters the tooth groove of the gear 82, so that the second engagement block 84 and the gear 82 are engaged.

Further, as shown in fig. 1 and 2, the end of the first engagement block 83 facing the second engagement block 84 is provided with a second guide slope 831, and the second guide slope 831 and the first guide slope 841 are inclined toward each other. When the button member 4 is moved upward and reset, the first engagement block 83 moves to the second guide slope 831 to be in contact with one of the gear teeth 821 of the gear 82, and during the continued upward movement of the first engagement block 83, the gear teeth 821 are pushed by the second guide slope 831 to rotate along the gear teeth 821, so that the gear 82 continues to rotate to allow the first engagement block 83 to enter the tooth slot of the gear 82, so that the first engagement block 83 and the gear 82 are engaged.

Further, as shown in fig. 1 and 2, the gear teeth 821 of the gear 82 are provided with a third guiding inclined surface 8211 toward one end of the second engagement block 84, and the third guiding inclined surface 8211 and the first guiding inclined surface 841 cooperate to guide the gear 82 to rotate, thereby further facilitating engagement of the second engagement block 84 with the gear 82.

Further, in order to more facilitate the engagement of the first engagement block 83 with the gear 82, the other end of the gear teeth 821 of the gear 82 is provided with a fourth guide slope (not shown in the drawing), and the fourth guide slope and the second guide slope 831 cooperate to guide the rotation of the gear 82.

Taking the gear 82 including five gear teeth 821 as an example, the gear 82 includes a first tooth slot, a second tooth slot, a third tooth slot, a fourth tooth slot, and a fifth tooth slot in this order, the spraying device 100 triggers spraying and absorbing liquid by up-and-down movement of the button member 4, and the first engagement block 83 is located below the second engagement block 84. When the spraying device 100 is in the unused state, the first engaging block 83 is engaged with the first tooth socket of the gear 82, when the button member 4 is pressed downwards for the first time, the gear 82 is engaged with the second engaging block 84 after being separated from the first engaging block 83, at this time, the gear 82 rotates by a certain angle, the gear tooth 821 on one side of the first tooth socket changes in position, the projection of the gear tooth 821 on the plane of the end face of the gear 82 of the first engaging block 83 is at least partially overlapped with the projection of the first engaging block 83, when the button member 4 is reset, the first engaging block 83 moves to be in contact with the gear tooth 821, the first engaging block 83 which moves upwards drives the gear tooth 821, the first engaging block 83 enters the second tooth socket and is engaged in the process of rotating the gear 82, and the gear 82 rotates by 72 ° in the whole process of completing one spraying and one liquid suction of the spraying device 100. During the continuous use of the spraying apparatus 100, the first engagement block 83 is engaged with the third tooth slot, the fourth tooth slot, and the fifth tooth slot in sequence, and then re-enters the first tooth slot, and repeats the cycle. During the completion of one injection and one suction by injection device 100, the two tooth grooves in which gear 82 engages with first engagement block 83 and second engagement block 84, respectively, may or may not be adjacent.

It should be understood that the structures of the first engagement block 83, the second engagement block 84 and the gear 82 are not limited thereto, and the above-described guide inclined surfaces may be omitted, and by defining that projections of the first engagement block 83 and the second engagement block 84 on a plane on which the end faces of the gear 82 lie do not overlap or overlap in a small portion, a space between the first engagement block 83 and the second engagement block 84 in a direction in which the end faces of the gear 82 lie is prevented from being too small, so that engagement of the first engagement block 83 and the second engagement block 84 with the gear 82 in turn is prevented.

In one embodiment, as shown in fig. 3 and 5, the housing 6 is provided with a window 6141, the window 6141 extends along the axial direction of the screw 811 of the counting assembly 81, the user views the indicator 812 from the window 6141, and the fuzzy counting result is obtained according to the position of the indicator 812.

Further, the housing 6 is provided with an indication mark 6142 provided at one side of the window 6141. The indication mark 6142 may be one, and the indication mark 6142 is used to indicate that the current number of injections reaches a preset value when the position of the indication piece 812 is viewed from the window 6141 to correspond to the indication mark 6142. The indication marks 6142 may be plural, and all the indication marks 6142 may be provided at regular intervals along the extending direction of the window 6141. The user views the indicator 812 from the window 6141, and matches the indicator mark 6142 according to the position of the indicator 812, to obtain the current count result.

Further, in order to facilitate the user's viewing of the count result, a window 6141 and an indication mark 6142 are provided on the front surface of the housing 6.

Further, the indication mark 6142 may be a scale mark or a text mark, so that accurate counting can be achieved. Of course, the indicator 6142 may also be a simple position marker, with the indicator 6142 matching with the window 6141 to achieve fuzzy counting.

In one embodiment, as shown in FIG. 4, gear 82 is rotatably coupled to housing 6 and screw 811 of counting assembly 81 is rotatably coupled to housing 6, counting mechanism 8 being simple to assemble. The indicator 812 of the counter assembly 81 abuts the housing 6 such that the indicator 812 does not rotate with the screw 811.

Further, as shown in fig. 1 and 4, the indicator 812 is provided with an abutment portion 8121, and the abutment portion 8121 abuts against the inner wall of the housing 6.

Further, as shown in fig. 4, a first mounting portion 6151 and a second mounting portion 6152 are provided on the inner wall of the housing 6, one end of the gear 82 is rotatably connected to the first mounting portion 6151, and one end of the screw 811 is rotatably connected to the second mounting portion 6152.

Further, as shown in fig. 1 and 4, the screw 811 includes a threaded portion 8111 and an optical axis portion 8112, the inner wall of the housing 6 is provided with a third mounting portion 6153, and the optical axis portion 8112 is rotatably connected to the third mounting portion 6153.

In an embodiment, as shown in fig. 1 and 2, an inner wall of one side of the button member 4 has an arc surface 41, the arc surface 41 and the gear 82 are in clearance fit, the first engagement block 83 and the second engagement block 84 are respectively connected to the arc surface 41, and the arc surface 41 is configured so that the first engagement block 83 and the second engagement block 84 are arranged in a staggered manner along the circumferential direction of the gear 82.

In one embodiment, as shown in fig. 1 and 2, the first engagement block 83 and the second engagement block 84 are integrally formed with the button member 4 to simplify assembly. Of course, the connection between the first engagement block 83 and the second engagement block 84 and the button member 4 is not limited to this, and the first engagement block 83 and the second engagement block 84 may be separate members and may be attached to the button member 4 by other connection means such as a snap fit or a fixing connection.

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 ejection device, comprising:

a counting assembly (81) for counting;

-a gear (82) capable of triggering the counting assembly (81) to count when rotated;

a first engagement block (83) and a second engagement block (84), both of which are connected to a button member (4) of the injection device (100); the first meshing blocks (83) and the second meshing blocks (84) are sequentially distributed along the direction of the central axis of the gear (82), and the first meshing blocks (83) and the second meshing blocks (84) are arranged in a staggered manner along the circumferential direction of the gear (82);

wherein, when the injection device (100) is in an initial state, the gear (82) is engaged with the first engagement block (83), and the second engagement block (84) is opposite to one gear tooth position of the gear (82);

when the button piece (4) moves linearly under the action of external force to trigger the spraying device (100) to spray, the gear (82) is meshed with the second meshing block (84); when the button member (4) is reset to trigger the ejection device (100) to suck liquid, the gear (82) is meshed with the first meshing block (83) so that the gear (82) rotates in one direction to trigger the counting assembly (81).

2. The counting mechanism of the spraying device according to claim 1, characterized in that the counting assembly (81) comprises a screw (811) and an indicator (812), one end of the screw (811) being coaxially connected with the gear (82), the indicator (812) being screwed to the screw (811);

wherein, when the gear (82) rotates, the gear can drive the screw rod (811) to rotate, so that the indicator piece (812) moves unidirectionally along the axial direction of the screw rod (811).

3. Counting mechanism of an injection device according to claim 1 or 2, characterized in that the end of the second engagement block (84) facing the first engagement block (83) is provided with a first guiding ramp (841);

wherein the first guiding inclined surface (841) is used for guiding and pushing the gear (82) to rotate so as to be engaged with the second engagement block (84) when the button piece (4) moves to trigger the injection.

4. A counting mechanism of an injection device according to claim 3, characterized in that the first engagement block (83) is provided with a second guiding ramp (831) towards one end of the second engagement block (84);

wherein, when the button member (4) is reset, the second guiding inclined surface (831) is used for guiding and pushing the gear (82) to rotate so as to be meshed with the first meshing block (83).

5. A counting mechanism of an injection device according to claim 3, characterized in that the end of the gear teeth (821) of the gear (82) facing the second engagement block (84) is provided with a third guiding ramp (8211), the third guiding ramp (8211) and the first guiding ramp (841) cooperating to guide the rotation of the gear (82).

6. An ejector device, comprising:

a button member (4), the button member (4) being linearly movable to trigger the ejection means (100) to eject 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, further comprising a housing (6) provided with a window (6141), said window (6141) extending in the axial direction of the screw (811) of the counting assembly (81).

8. The spraying device according to claim 7, characterized in that the housing (6) is provided with an indicator mark (6142) arranged on one side of the window (6141).

9. The spraying device according to claim 6, further comprising a housing (6), said gear (82) being rotatably connected to said housing (6), a screw (811) of said counting assembly (81) being rotatably connected to said housing (6), an indicator (812) of said counting assembly (81) being abutted against said housing (6).

10. The spraying device according to claim 6, characterized in that the first engagement block (83) and the second engagement block (84) are integrally formed to the button member (4).