CN219008608U

CN219008608U - Small-dose high-precision spraying device

Info

Publication number: CN219008608U
Application number: CN202223369940.7U
Authority: CN
Inventors: 邓云化; 张绍刚; 李昌旭; 卿凯
Original assignee: Shenzhen Bona Pharma Technology Co ltd
Current assignee: Shenzhen Bona Pharma Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-12
Anticipated expiration: 2032-12-14

Abstract

The utility model provides a low dose high precision spray device comprising: the device comprises a spray head, a main column, an auxiliary column, a collar piece, a piston and an elastic piece; a through cavity is arranged in the main column, the top of the auxiliary column is inserted into the through cavity, the collar piece is sleeved on the outer wall of the main column, the upper end of the spray head is inserted into the collar piece, the piston is sleeved on the auxiliary column, the outer wall is movably abutted with the cavity of the spray head, the top end of the elastic piece is abutted against the collar piece, the bottom end of the elastic piece is abutted against the top of the piston, and a liquid outlet channel which is communicated with the spray head, the auxiliary column and the main column is also arranged in the main column; pressing the main column, synchronously driving the piston to move along the auxiliary column, and reversely moving and resetting the main column under the elastic action of the elastic piece when the external force is released. The connecting position of the elastic piece is changed, the positions and the connecting relation of the main column, the auxiliary column and the piston are reasonably set, the operation hand feeling of a user pressing the spray pump is improved under the condition that the overall size of the spray pump is not increased, and the accurate spray administration of small dosage can be realized.

Description

Small-dose high-precision spraying device

Technical Field

The utility model relates to the technical field of medical spraying devices, in particular to a low-dose high-precision spraying device.

Background

The existing small medical spraying device on the market is generally provided with a spring, a push rod, a piston and other structures in a spray head, wherein one end of the spring is connected to the lower end of the piston, the other end of the spring is connected to the liquid inlet end of the spray head, and the push rod and the piston are located behind the spring. The pump core of the spraying device is longer in overall size due to the structure, if the spraying device needs to be made with a small dose, the stroke of the piston needs to be reduced, namely the length of the spring is reduced, and the user pressing hand feeling can be influenced by the length of the spring, so that the conventional spraying device cannot be well compatible with the small dose and the operation hand feeling.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a low-dose high-precision spraying device so as to solve the technical problem that the existing spraying device cannot be well compatible with low dose and operation handfeel.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

embodiments of the present utility model provide a low dose high precision spray device comprising: the spray head comprises a spray head with a small body, a main column, an auxiliary column, a collar, a piston and an elastic piece; a through cavity is formed in the main column, the top of the auxiliary column is inserted into the through cavity, the collar piece is sleeved on the outer wall of the main column, the upper end of the spray head is inserted into the collar piece, the piston is sleeved on the auxiliary column, the outer wall of the piston is movably abutted with the cavity of the spray head, the top end of the elastic piece is abutted against the collar piece, the bottom end of the elastic piece is abutted against the top of the piston, and a liquid outlet channel which is communicated with the spray head, the auxiliary column and the main column is also formed in the spray head; and pressing the main column, synchronously driving the piston to move along the auxiliary column, and reversely moving and resetting the main column under the elastic action of the elastic piece when the external force is released.

The bottom of the cavity of the spray head is also provided with a communicating pipe, the lower end of the auxiliary column is also provided with an annular cavity corresponding to the communicating pipe, and the communicating pipe can move along the annular cavity in a telescopic way under the drive of the main column.

Wherein the piston comprises: the piston body, the middle part of piston body is equipped with the through-hole that runs through axially, the upper end of piston body still is equipped with first ring channel, the through-hole inner wall still radially extends a second ring channel, the lower extreme outer wall elasticity butt of piston body in the cavity inner wall of shower nozzle, the lower end connection of elastic component in first ring channel, the auxiliary column middle part articulates in the second ring channel.

Wherein, the secondary column includes: the body of rod portion, connect in body of body lower extreme, and set up in grafting portion in the body of body, grafting portion with body of body portion encloses jointly and synthesizes annular chamber, body of rod portion peg graft in lead to the chamber, grafting portion tip extends to in the lumen of communicating pipe.

Wherein, the lower tip of grafting portion is the toper that expands outward.

Wherein, the main column includes: the main column body, be equipped with in the main column body lead to the chamber, the middle part that leads to the chamber still is equipped with first spacing portion, the main column body is close to the lower extreme outer wall and still is equipped with second spacing portion, the top of auxiliary column support prop up in first spacing portion, the neck piece with the piston support prop up respectively in the top and the bottom of second spacing portion.

The collar piece is connected with the spray head in a buckling mode, a connecting groove is formed between the collar piece and the spray head in a surrounding mode, and the top of the elastic piece is connected to the connecting groove.

Wherein, the communicating pipe is also connected with a straw.

Wherein, still include: a container bottle, a connecting cover connected to the bottle mouth of the container bottle and a pressing cap connected to the top of the main column; the spray head is inserted into the bottle opening, and the collar piece is locked at the bottle opening of the container bottle by the connecting cover.

Wherein, a nozzle is also arranged in the pressing cap, and the nozzle is communicated with the main column; the connecting cover is also provided with an end cap, and the end cap is covered on the pressing cap.

According to the small-dose high-precision spraying device, the connecting position of the elastic piece is changed, the positions and the connecting relation of the main column, the auxiliary column and the piston are reasonably set, the operation hand feeling of a user pressing a spraying pump is improved under the condition that the whole size of the device is not increased, and small-dose accurate spraying and drug delivery can be realized.

The foregoing description is only an overview of the present utility model, and is intended to be more clearly understood as being carried out in accordance with the following description of the preferred embodiments, as well as other objects, features and advantages of the present utility model.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a small-dose high-precision spraying device according to an embodiment of the present utility model.

Fig. 2 is an exploded view of a small dose high precision spray device according to an embodiment of the present utility model.

Fig. 3 is a cross-sectional view of a small dose high precision spray device according to an embodiment of the present utility model.

Fig. 4 is a partial cross-sectional view of the pump core of a small dose high precision spray device according to an embodiment of the present utility model.

Fig. 5 is a schematic view of a main column part of a small-dose high-precision spraying device according to an embodiment of the present utility model.

Fig. 6 is a schematic view of a secondary column part of a small-dose high-precision spraying device according to an embodiment of the present utility model.

Fig. 7 is a schematic diagram of a piston portion of a low dose high precision spray device according to an embodiment of the present utility model.

Fig. 8 is a schematic diagram of a nozzle part of a small-dose high-precision spraying device according to an embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships as described based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be attached, detached, or integrated, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of 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 expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

Referring to fig. 1 to 8, the present embodiment provides a low dose high precision spray device 100, and the low dose high precision spray device 100 mainly includes: an end cap 1, a pump core 200 connecting the cap 2 and the container bottle 3 and provided at the mouth of the container bottle 3. The connecting cover 2 is in threaded connection with the bottle mouth of the container bottle 3, the end cap 1 is in clamped connection with the connecting cover 2, and is used for carrying out dust-proof sealing on the pump core 200 part, so that pollution is avoided.

The pump core 200 includes: a spray head 9 with a small body, a main column 5, a secondary column 7, a collar 6, a piston 8 and an elastic member 10. The utility model discloses a shower nozzle, including main column 5, collar piece, piston 8, ring piece, elastic component 10, the top of auxiliary column 7 peg graft in lead to the chamber 52 is equipped with in the main column 5, the top of auxiliary column 7 peg graft in lead to the chamber 52, the ring piece 6 peg graft in the outer wall of main column 5, the upper end of shower nozzle 9 peg graft in the ring piece 6, piston 8 socket in auxiliary column 7, and outer wall with the cavity activity butt of shower nozzle 9 forms the piston structure, the top of elastic component 10 support in the ring piece 6, the bottom support in the top of piston 8, shower nozzle 9 with auxiliary column 7 still be equipped with the drain passage of intercommunication in the main column 5. When the main column 5 is pressed, the piston 8 is synchronously driven to move along the auxiliary column 7, and the gas in the cavity of the spray head 9 is discharged to increase the air pressure; when the external force is released, the main column 5 moves reversely to reset under the elastic action of the elastic piece 10, the air pressure of the cavity of the spray head 9 is reduced at the moment, the liquid medicine in the container bottle 3 is sucked into the cavity, and when the main column 5 is pressed again, the liquid medicine is extruded from the cavity to be sprayed out through the liquid outlet channel. The small body of the spray head 9 is a matching structure in which the spray head main body forms a single-pressing medicine liquid storage space portion.

The bottom of the cavity of the spray head 9 is further provided with a communicating pipe 92, the lower end of the auxiliary column 7 is further provided with an annular cavity 73 corresponding to the communicating pipe 92, and the communicating pipe 92 can move along the annular cavity 73 in a telescopic manner under the driving of the main column 5.

The piston 8 comprises: the piston body 81, the middle part of piston body 81 is equipped with the through-hole 82 that runs through axially, the upper end of piston body 81 still is equipped with first ring channel 83, the through-hole inner wall still radially extends a second ring channel 84, the lower extreme 811 outer wall elasticity butt of piston body 81 in the cavity inner wall of shower nozzle 9, the lower end connection of elastic component 10 in first ring channel 83, the auxiliary column 7 middle part articulates in second ring channel 84. As shown in fig. 4, the opening of the first annular groove 83 faces upward, the opening of the second annular groove 84 faces downward, and when the auxiliary column 7 moves upward, the piston 8 is synchronously driven to move upward, and when the main column 5 moves downward, the piston is synchronously driven to move downward.

Referring again to fig. 6, the secondary column 7 includes: the pipe body 71 is connected to the pipe body 72 at the lower end of the pipe body 71, and the plugging portion 74 is disposed in the pipe body 72, the plugging portion 74 and the pipe body 72 jointly enclose the annular cavity 73, the pipe body 71 is plugged into the through cavity 52, and the lower end of the plugging portion 74 extends into the cavity of the communicating pipe 92.

In this embodiment, the lower end 741 of the plugging portion 74 has an outwardly expanded tapered shape, and the tapered lower end 741 has a certain elasticity, and when the lower end 741 elastically contacts the inner wall of the communication pipe 92, the gas in the communication pipe 92 is compressed and the gas can escape through the tapered structure having elasticity.

Referring again to fig. 4 and 5, the main column 5 includes: the main column body 51, be equipped with in the main column body 51 lead to the chamber 52, the middle part that leads to the chamber 52 still is equipped with first spacing portion 521, main column body 51 is close to the lower extreme outer wall and still is equipped with second spacing portion 522, the top of auxiliary column 7 support in first spacing portion 521, the neck piece 6 with piston 8 support respectively in the top and the bottom of second spacing portion 522, namely be equipped with the reserve space between the upper end of neck piece 6 and piston 8, this second spacing portion 522 can move in this reserve space, and the size of this reserve space influences the travel of main column 5, also influences the medicament dosage of single pressing blowout promptly.

In this embodiment, the collar 6 is connected to the nozzle 9 by a snap, and a connection groove 911 is further enclosed between the collar 6 and the nozzle 9, and the top of the elastic member 10 is connected to the connection groove 911.

In the present embodiment, the elastic member 10 is a spring, it will be appreciated that in other embodiments, the elastic member 10 may be an elastic member such as an elastic tube

Wherein, a extension pipe 921 extends from the lower end of the communicating pipe 92 to the outside of the shell body 91, a straw 11 is further connected in the communicating pipe 92, the lower end of the straw 11 extends to the bottom of the container bottle 3, and specifically, the straw 11 is inserted into the extension pipe 921. The suction pipe 11 or the communicating pipe 92 is further provided therein with a check valve which is closed when the piston 8 moves downward and opened when the piston moves upward so as to suck the medicine liquid.

Referring to fig. 3 again, the collar 6 is locked at the mouth of the container bottle 3 by the connecting cover 2, the upper end of the main column 5 is further connected with a pressing cap 4, a nozzle 41 is further arranged in the pressing cap 4, and the nozzle 41 is communicated with the main column 5; the connecting cover 2 is also provided with an end cap 1, and the end cap 1 is covered on the pressing cap 4 and is used for protecting the pump core 200 from dust and pollution.

The small-dose high-precision spraying device of the embodiment adopts a small-specification spray head, the diameter of a water storage section of a small body is small, the amount of liquid medicine pressed out at a time is small, a small-specification piston and a collar with various dosage specifications are adopted, high-precision plastic parts are prepared through a precision injection mold and a molding process, and then a pump core is assembled. The collar piece is internally provided with an inner column for controlling the dosage and limiting the height of the piston, the collar pieces with different dosage specifications can be injection molded by the insert needles with different dosages, and a plurality of pumps with small dosage specifications can be realized. The small-dose high-precision spraying device of the embodiment can be made into small-dose spraying pumps with the specifications of 0.015ml,0.02ml,0.025ml,0.03ml,0.035ml,0.04ml and the like.

The low-dose high-precision spraying device of the embodiment is characterized in that the connecting position of the elastic piece is changed, the positions and the connecting relation of the main column, the auxiliary column and the piston are reasonably set, the operation hand feeling of a user pressing a spraying pump is improved under the condition that the whole size of the low-dose high-precision spraying device is not increased, and the accurate spraying of low dose can be realized.

The foregoing examples are provided to further illustrate the technical contents of the present utility model for the convenience of the reader, but are not intended to limit the embodiments of the present utility model thereto, and any technical extension or re-creation according to the present utility model is protected by the present utility model. The protection scope of the utility model is subject to the claims.

Claims

1. A low dose, high precision spray device comprising: the spray head comprises a spray head with a small body, a main column, an auxiliary column, a collar, a piston and an elastic piece; a through cavity is formed in the main column, the top of the auxiliary column is inserted into the through cavity, the collar piece is sleeved on the outer wall of the main column, the upper end of the spray head is inserted into the collar piece, the piston is sleeved on the auxiliary column, the outer wall of the piston is movably abutted with the cavity of the spray head, the top end of the elastic piece is abutted against the collar piece, the bottom end of the elastic piece is abutted against the top of the piston, and a liquid outlet channel which is communicated with the spray head, the auxiliary column and the main column is also formed in the spray head; and pressing the main column, synchronously driving the piston to move along the auxiliary column, and reversely moving and resetting the main column under the elastic action of the elastic piece when the external force is released.

2. The low-dose high-precision spraying device according to claim 1, wherein a communicating pipe is further arranged at the bottom of the cavity of the spray head, an annular cavity corresponding to the communicating pipe is further arranged at the lower end of the auxiliary column, and the communicating pipe can move in a telescopic manner along the annular cavity under the driving of the main column.

3. The low dose high precision spray device of claim 2, wherein the piston comprises: the piston body, the middle part of piston body is equipped with the through-hole that runs through axially, the upper end of piston body still is equipped with first ring channel, the through-hole inner wall still radially extends a second ring channel, the lower extreme outer wall elasticity butt of piston body in the cavity inner wall of shower nozzle, the lower end connection of elastic component in first ring channel, the auxiliary column middle part articulates in the second ring channel.

4. A low dose, high precision spray device as claimed in claim 3 wherein the secondary post comprises: the body of rod portion, connect in body of body lower extreme, and set up in grafting portion in the body of body, grafting portion with body of body portion encloses jointly and synthesizes annular chamber, body of rod portion peg graft in lead to the chamber, grafting portion tip extends to in the lumen of communicating pipe.

5. The low dose high precision spray device of claim 4, wherein a lower end of said spigot portion is flared cone-shaped.

6. The low dose high precision spray device of claim 5, wherein said main column comprises: the main column body, be equipped with in the main column body lead to the chamber, the middle part that leads to the chamber still is equipped with first spacing portion, the main column body is close to the lower extreme outer wall and still is equipped with second spacing portion, the top of auxiliary column support prop up in first spacing portion, the neck piece with the piston support prop up respectively in the top and the bottom of second spacing portion.

7. The low dose high precision spray device of claim 6, wherein the collar is snap-fit with the spray head, a connecting groove is further defined between the collar and the spray head, and the top of the elastic member is connected to the connecting groove.

8. The low dose high precision spray device as claimed in claim 7, wherein a straw is further connected to the inside of the communicating tube.

9. A low dose, high precision spray device as claimed in any one of claims 1 to 8, further comprising: a container bottle, a connecting cover connected to the bottle mouth of the container bottle and a pressing cap connected to the top of the main column; the spray head is inserted into the bottle opening, and the collar piece is locked at the bottle opening of the container bottle by the connecting cover.

10. The low dose high precision spray device of claim 9, wherein a nozzle is further provided within the push cap, the nozzle being in communication with the main post; the connecting cover is also provided with an end cap, and the end cap is covered on the pressing cap.