CN113273728A

CN113273728A - Liquid pushing mechanism and electronic cigarette

Info

Publication number: CN113273728A
Application number: CN202110595271.6A
Authority: CN
Inventors: 雷晓东; 何伟; 杨小云
Original assignee: Shenzhen Zhaowei Machinery and Electronics Co Ltd
Current assignee: Shenzhen Zhaowei Machinery and Electronics Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-20

Abstract

The invention provides a liquid pushing mechanism and an electronic cigarette. Wherein, liquid pushing mechanism includes following part: the liquid storage bin provided with the piston is provided with a liquid outlet; the second screw rod is sleeved on the first screw rod, and the pushing piece is sleeved on the second screw rod; the second screw rod is driven by the first screw rod to synchronously rotate and can move along the axis direction of the second screw rod relative to the first screw rod; the first screw rod is meshed with the screw rod nut to drive the screw rod nut to move along the axial direction of the first screw rod, the screw rod nut is connected with the second screw rod to drive the second screw rod to move along the axis direction of the second screw rod, and the second screw rod can rotate relative to the screw rod nut; one end of the pushing piece is connected with the piston, internal threads arranged on at least part of the inner wall of the pushing piece are meshed with external threads of the second screw rod, and the pushing piece only drives the piston to reciprocate along the axial direction of the second screw rod; the power output end of the driving device is in driving connection with one end, far away from the liquid storage bin, of the first screw rod. This liquid pushing mechanism can improve tobacco tar propelling movement efficiency and reduce the design volume of electron cigarette, improves the portability.

Description

Liquid pushing mechanism and electronic cigarette

Technical Field

The invention belongs to the technical field of smoking appliances, and particularly relates to a liquid pushing mechanism and an electronic cigarette.

Background

In the common electronic cigarette in the market at present, the electronic cigarette generally comprises a suction nozzle, a heating and atomizing mechanism communicated with the suction nozzle, a liquid storage bin for storing tobacco tar and other components. During the in-service use, the tobacco tar in the stock solution storehouse gets into the heating atomization mechanism, and the air of simultaneously follow external environment suction mixes with the tobacco tar and forms vaporific gas-liquid mixture, and then, this gas-liquid mixture heats through the heating atomization mechanism and becomes the flue gas, and the flue gas is inhaled through the suction nozzle by the user at last. In the process, the tobacco tar in the liquid storage bin needs to be quantitatively pushed to the heating and atomizing mechanism, so that a corresponding tobacco tar pushing device needs to be arranged in the electronic cigarette. However, the tobacco tar pusher in the existing electronic cigarette is limited by the actual volume of the electronic cigarette, the transmission efficiency is low, and the tobacco tar pushing efficiency is low, and meanwhile, the existing tobacco tar pusher is relatively complex in structural design, so that the electronic cigarette is large in volume and inconvenient to carry due to the fact that the occupied space of the tobacco tar pusher is large.

Disclosure of Invention

An object of the embodiments of the present invention is to provide an electronic cigarette, so as to solve the technical problems in the prior art that the tobacco tar pushing efficiency in an electronic cigarette is low, and the electronic cigarette has a large volume and is inconvenient to carry.

In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a liquid pushing mechanism including: a liquid storage bin having a liquid outlet; the piston is assembled in the liquid storage bin; the screw rod assembly comprises a first screw rod, a second screw rod, a screw rod nut and a pushing piece; the second screw rod and the pushing piece are arranged in a hollow mode along the axial direction, the second screw rod is sleeved on the first screw rod, the first screw rod drives the second screw rod to rotate synchronously, the second screw rod can move along the axis direction of the second screw rod relative to the first screw rod, and the pushing piece is sleeved on the second screw rod; the screw thread of the first screw rod is meshed with the screw thread of the screw nut to drive the screw nut to move along the axial direction of the first screw rod, the screw nut is connected with the second screw rod to drive the second screw rod to move along the axis direction of the second screw rod, and the second screw rod can rotate relative to the screw nut; one end of the pushing piece is connected with the piston, internal threads are arranged on at least part of the inner wall of the pushing piece, the internal threads of the pushing piece are meshed with the external threads of the second screw rod, and the pushing piece only drives the piston to reciprocate in the liquid storage bin along the axial direction of the second screw rod; and the power output end of the driving device is in driving connection with one end, far away from the liquid storage bin, of the first screw rod.

Optionally, the cross-sectional profile of the reservoir is non-circular.

Optionally, the screw assembly further comprises a guide, an end of the guide is connected to the screw nut, and the guide is sleeved on the pushing member to limit the pushing member to rotate with the second screw.

Optionally, the screw assembly further includes a linkage member, and the linkage member is assembled between the first screw and the second screw, so that the second screw rotates synchronously with the first screw.

Optionally, the driving device comprises a driving motor, and an output end of the driving motor is in driving connection with one end of the first screw rod, which is far away from the liquid storage bin; or the driving device comprises a driving motor and a transmission piece, the input end of the transmission piece is connected with the output end of the driving motor, and the output end of the transmission piece is in driving connection with one end, far away from the liquid storage bin, of the first screw rod.

Optionally, the liquid pushing mechanism further comprises a fixing pipe and a fixing piece, one end of the fixing pipe is abutted against the outer wall of the liquid storage bin, the fixing piece is arranged on the end portion, far away from the liquid storage bin, of the fixing pipe, the driving device is installed on the fixing piece, the screw rod assembly is arranged in the pipe cavity of the fixing pipe, and the fixing pipe can limit the screw rod nut to rotate along with the first screw rod.

Optionally, the liquid pushing mechanism further includes a limiting member, the limiting member is fixedly mounted at one end of the fixing pipe away from the liquid storage bin, an annular groove is formed in the first lead screw, and the limiting member extends into the annular groove.

Optionally, the screw rod assembly further comprises a support member, the support member may be a bearing, and the bearing is sleeved on an end portion of the first screw rod and/or the second screw rod far away from the liquid storage bin.

The invention also proposes an electronic cigarette comprising: the shell is provided with an installation inner cavity and an air inlet; the atomization mechanism is arranged in the installation inner cavity; the suction nozzle is connected to the shell and provided with a suction hole, and air flows through the atomizing mechanism from the air inlet hole and then flows to the suction hole; and the liquid pushing mechanism is assembled in the installation inner cavity, and the liquid outlet is communicated with the atomizing mechanism.

Optionally, the electronic cigarette further comprises: the circuit control board is arranged in the installation inner cavity and is electrically connected with the atomizing mechanism and the driving device; and the negative pressure detector is arranged in the air flow channel space between the atomizing mechanism and the suction nozzle and is electrically connected with the circuit control board.

The liquid pushing mechanism provided by the invention has the beneficial effects that: compared with the prior art, the liquid pushing mechanism provided by the invention is applied to the electronic cigarette for pushing liquid, and the specific operation process of the liquid pushing mechanism is as follows: the driving device provides power and transmits the power to the first lead screw, the first lead screw is driven to rotate, the first lead screw can drive the second lead screw to rotate simultaneously when rotating, the lead screw nut sleeved on the first lead screw linearly moves along the axial direction of the first lead screw and pushes the second lead screw to move towards the piston, and meanwhile, the internal thread of the pushing piece is meshed with the external thread of the second lead screw, so that the pushing piece also moves towards the piston when the second lead screw rotates. Therefore, the second screw rod moves towards the piston and the pushing piece moves towards the piston to combine together, so that the pushing piece can push the piston to move in the liquid storage bin at a speed twice the moving speed of the pushing piece, the transmission efficiency of the liquid pushing mechanism is greatly improved, the pushing efficiency of liquid in the liquid storage bin is effectively improved, and quantitative liquid pushing with higher precision can be realized through the thread transmission between the screw rod assemblies. And because the liquid pushing mechanism adopts the second screw rod to be sleeved on the first screw rod, the pushing piece is sleeved on the second screw rod, the first screw rod and the second screw rod are linked, and the second screw rod and the pushing piece are in threaded engagement transmission, and the integrated design structures effectively reduce the whole volume of the liquid pushing mechanism and realize the miniaturization design of the liquid pushing mechanism. When the liquid pushing mechanism is applied to the electronic cigarette, the design volume of the electronic cigarette can be reduced, and the portability of the electronic cigarette is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a liquid pushing mechanism according to an embodiment of the present invention;

FIG. 2 is a sectional view taken in the direction S1-S1 in FIG. 1;

fig. 3 is a schematic structural diagram of an electronic cigarette according to an embodiment of the present invention;

FIG. 4 is a sectional view taken in the direction S2-S2 in FIG. 3;

fig. 5 is a schematic structural diagram of the electronic cigarette provided by the embodiment of the invention after the housing is removed;

figure 6 is an exploded view of an electronic cigarette provided by an embodiment of the present invention with the housing removed;

fig. 7 is an enlarged schematic view of a portion a of fig. 2.

The reference numbers illustrate:

100. a housing; 200. a liquid pushing mechanism; 300. an atomization mechanism; 110. installing an inner cavity; 120. an air inlet; 210. a liquid storage bin; 220. a screw assembly; 230. a drive device; 212. a piston; 213. a liquid outlet; 221. a first lead screw; 222. a second lead screw; 223. a feed screw nut; 224. a linkage member; 225. a pusher member; 226. a support member; 227. connecting support legs; 228. a fixed tube; 229. a guide member; 400. a circuit control board; 231. a drive motor; 231a, a stationary case; 232. a transmission member; 240. a fixing member; 250. a limiting member; 500. a suction nozzle; 510. a suction hole; 310. a heating device; 320. a flue gas cavity; 330. a negative pressure detector; 600. a battery.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the invention provides a liquid pushing mechanism and an electronic cigarette with the same.

Referring to fig. 1 and 2, in one embodiment, the liquid pushing mechanism 200 includes a liquid storage chamber 210, a piston 212, a screw assembly 220, and a driving device 230. Specifically, the liquid storage chamber 210 has a liquid outlet 213; the piston 212 is assembled in the reservoir 210; the lead screw assembly 220 comprises a first lead screw 221, a second lead screw 222, a lead screw nut 223 and a pushing piece 225; the second screw rod 222 and the pushing piece 225 are arranged in a hollow mode along the axial direction, the second screw rod 222 is sleeved on the first screw rod 221, the first screw rod 221 drives the second screw rod 222 to rotate synchronously, the second screw rod 222 can move along the axis direction of the second screw rod 222 relative to the first screw rod 221, and the pushing piece 225 is sleeved on the second screw rod 222; the thread of the first lead screw 221 is engaged with the thread of the lead screw nut 223 to drive the lead screw nut to move along the axial direction of the first lead screw 221, the lead screw nut 223 is connected with the second lead screw 222 to drive the second lead screw 222 to move along the axial direction of the second lead screw, and the second lead screw 222 can rotate relative to the lead screw nut 223; one end of the pushing member 225 is connected with the piston 212, at least part of the inner wall of the pushing member 225 is provided with an internal thread, the internal thread of the pushing member 225 is meshed with the external thread of the second screw rod 222, and the pushing member 225 only drives the piston 212 to reciprocate in the axial direction of the second screw rod 222 in the liquid storage bin 210; the power output end of the driving device 230 is in driving connection with one end of the first lead screw 221 far away from the liquid storage bin 210.

Here, the internal threads provided on at least a portion of the inner wall of the pushing member 225 includes two cases, one of which is to provide threads in at least a small section of the inner wall of the pushing member 225, without providing threads on the entire inner wall thereof; and the second is that the whole inner wall of the pushing piece 225 is provided with screw threads. It should be noted that the liquid pushing mechanism 200 is mainly applied to an electronic cigarette, and is used for pushing tobacco tar in the electronic cigarette. As shown in fig. 3 to 6, the electronic cigarette of the present invention includes a housing 100, a battery 600, an atomizing mechanism 300, a suction nozzle 500, and the liquid pushing mechanism 200. Wherein, the housing 100 has a mounting cavity 110 and an air inlet 120; the battery 600 is arranged in the installation inner cavity 110; the atomizing mechanism 300 is installed in the installation inner cavity 110; the suction nozzle 500 is connected to the housing 100, the suction nozzle 500 is provided with a suction hole 510, and air flows through the atomizing mechanism 300 from the air inlet 120 to the suction hole 510; the liquid pushing mechanism 200 is fitted in the mounting inner cavity 110, and the liquid outlet 213 is communicated to the atomizing mechanism 300. Specifically, in order to make the structural design of the electronic cigarette more compact and reduce the volume as much as possible, the housing 100 of the electronic cigarette is specifically in a long cylindrical shape for the convenience of the user to suck and carry, and may be in a square cylindrical shape, for example, but not limited to, and the battery 600, the liquid pushing mechanism 200, the atomizing mechanism 300, and the suction nozzle 500 are sequentially arranged and connected in the axial direction of the housing 100.

Further, the electronic cigarette further includes a circuit control board 400 and a negative pressure detector 330. Wherein, the circuit control board 400 is installed in the installation cavity 110, and the circuit control board 400 is electrically connected with the atomizing mechanism 300 and the driving device 230, so as to realize intelligent control of the atomizing mechanism 300 and the driving device 230. The negative pressure detector 330 is installed in the air flow passage space between the atomizing mechanism 300 and the suction nozzle 500, and the negative pressure detector 330 is electrically connected to the circuit control board 400. Here, as shown in fig. 4 to 6, the atomizing mechanism 300 is disposed between the suction nozzle 500 and the liquid storage bin 210, and includes a heating device 310 and a smoke cavity 320; the heating device 310 is arranged adjacent to the liquid storage bin 210 and is communicated with the liquid outlet 213 of the liquid storage bin 210, and the smoke cavity 320 is communicated with the suction hole 510 of the suction nozzle 500; the air inlet 120 arranged on the shell 100 is communicated with the smoke cavity 320 so as to facilitate the external air to enter and mix with the tobacco tar to form a gas-liquid mixture; when the electronic cigarette is used, a user sucks air through the suction nozzle 500, at the moment, the negative pressure detector 330 sends a signal to the circuit control board 400 after detecting the negative pressure condition in the smoke cavity, then the circuit control board 400 controls the driving device 230 in the liquid pushing mechanism 200 to start working, the driving device 230 drives the screw rod assembly 220 to drive the piston 212 to move, and accordingly, the tobacco tar in the liquid storage space of the liquid storage bin 210 is pushed to the heating device 310 through the liquid outlet 213.

In the process that the pushing member 225 drives the piston 212 to reciprocate in the liquid storage bin 210 along the axial direction of the second screw rod 222, the cross section profile of the liquid storage bin 210 may be circular, and in order to prevent the piston 212 from rotating in the liquid storage bin 210 (i.e., prevent the piston 212 from rotating along with the pushing member 225), the friction between the piston 212 and the inner wall of the liquid storage bin 210 may be designed, so that the sliding friction between the piston 212 and the inner wall of the liquid storage bin 210 is greater than the friction for the pushing member 225 to drive the piston 212 to rotate.

Based on the structural design, in the invention, the specific operation process of the liquid pushing mechanism 200 for pushing liquid is as follows: the driving device 230 provides power and transmits the power to the first lead screw 221, the first lead screw 221 is driven to rotate, and the first lead screw 221 can drive the second lead screw 222 to rotate together while rotating; the screw nut 223 sleeved on the first screw 221 moves linearly along the axial direction of the first screw 221 and pushes the second screw 222 to move towards the piston 212; meanwhile, since the internal thread of the pusher 225 is engaged with the external thread of the second lead screw 222, the second lead screw 222 also moves the pusher 225 toward the piston 212 when rotated. Thus, the second screw rod 222 moves towards the piston 212 and the pushing piece 225 moves towards the piston 212, and the two motions are combined together, so that the pushing piece 225 can push the piston 212 to move in the liquid storage bin 210 at a speed twice as fast as the moving speed of the pushing piece 225 so as to push liquid, namely smoke oil of an electronic cigarette, the transmission efficiency of the liquid pushing mechanism 200 is greatly improved, the pushing efficiency of the liquid in the liquid storage bin 210 is further effectively improved, and quantitative liquid pushing with higher precision can be realized through the thread transmission between the screw rod assemblies 220. In addition, the liquid pushing mechanism 200 adopts an integrated design structure that the second screw rod 222 is sleeved on the first screw rod 221, the pushing piece 225 is sleeved on the second screw rod 222, the first screw rod 221 and the second screw rod 222 are linked, and the second screw rod 222 and the pushing piece 225 are in threaded engagement transmission, so that the overall volume of the liquid pushing mechanism 200 is effectively reduced, and the miniaturized design of the liquid pushing mechanism 200 is realized. When the liquid pushing mechanism 200 is applied to an electronic cigarette, the design volume of the electronic cigarette can be reduced, and the portability of the electronic cigarette can be improved.

Alternatively, the cross-sectional profile of the reservoir 210 may be non-circular, for example, but not limited to, a regular polygon cross-section, an oval cross-section, etc., which also limits the piston 212 from rotating within the reservoir 210, but only from moving linearly back and forth.

Referring to fig. 2 and 4 and fig. 7, the lead screw assembly 220 further includes a guide 229, an end of the guide 229 is connected to the lead screw nut 223, and the guide 229 is sleeved on the pushing member 225 to limit the pushing member 225 to rotate with the second lead screw 222. That is, the guide 229 can limit the pushing element 225 to rotate synchronously with the second lead screw 222, so that the pushing element 225 can drive the piston 212 to work in a linear movement along the axis. The cross-sectional profile of the reservoir 210 may be circular or non-circular. When the cross-sectional profile of the reservoir 210 is circular, in order to prevent the piston 212 from rotating in the reservoir 210 (i.e. prevent the piston 212 from rotating with the pushing member 225), the screw nut 223 uses the guiding member 229 to guide and limit the pushing member 225 from rotating synchronously with the second screw 222, i.e. limit the piston 212 from rotating in the reservoir 210 but only moving linearly back and forth; when the cross-sectional profile of the reservoir 210 is non-circular, the guide 229 is provided to further ensure that the piston 212 always reciprocates linearly within the reservoir 210 without wobbling.

Referring to fig. 2 and 4, the lead screw assembly 220 further includes a linkage member 224, the linkage member 224 is mounted at a free end of the first lead screw 221 and rotates synchronously with the first lead screw 221, and the linkage member 224 is mounted between the first lead screw 221 and the second lead screw 222, so that the second lead screw 222 rotates synchronously with the first lead screw 221. In order to ensure that the linkage piece 224 drives the second screw rod 222 to rotate, the outer wall of the linkage piece 224 is in interference fit with the inner wall of the second screw rod 222, the linkage piece 224 is provided with an internal spline, and the free end of the first screw rod 221 is provided with an external spline matched with the internal spline of the linkage piece 224; alternatively, in other embodiments, the outer wall of the linkage member 224 is provided with an external spline, the inner wall of the second lead screw 222 is provided with an internal spline matched with the external spline of the linkage member 224, and the linkage member 224 is fixedly assembled on the free end of the first lead screw 221. Of course, in other embodiments, the linkage 224 and the second lead screw 222 may be connected by other connecting means. Alternatively, in other embodiments, instead of providing the link 224, splines may be provided on the inner wall of the second lead screw 222, and correspondingly, splines are provided on the free end of the first lead screw 221, so that the second lead screw 222 can move axially along the second lead screw 222 with respect to the first lead screw 221 while synchronously rotating with the first lead screw 221.

Further, in the present embodiment, the lead screw assembly 220 further includes a connecting leg 227 and a support 226, one end of the connecting leg 227 is connected with the lead screw nut 223, an end of the guide 229 is connected to the other end of the connecting leg 227, the support 226 is mounted on the connecting leg 227, an end of the second lead screw 222 away from the link 224 is connected to the support 226, and the second lead screw 222 is rotatable relative to the lead screw nut 223 through the support 226. The guide part 229 and the connecting leg 227 can be two separate components or can be one-piece components, such as plastic injection molded parts or metal castings, preferably one-piece components; the support 226 may be, but not limited to, a bearing, and the like, and mainly plays a role of supporting the second lead screw 222, so as to ensure that the second lead screw 222 can rotate smoothly. In addition, one end of the second lead screw 222 facing the liquid storage bin 210 is connected with the first lead screw 221 through a linkage 224, and the supporting piece 226 and the connecting support foot 227 are both located at one end of the second lead screw 222 away from the liquid storage bin 210 like the lead screw nut 223, so that the structure of the lead screw assembly 220 is more compact, and the design volume of the electronic cigarette is further reduced.

Specifically, the supporting member 226 may be a bearing, and the bearing is sleeved on the end of the first lead screw 221 and/or the second lead screw 222 far away from the reservoir 210. Preferably, the bearing can adopt at least two thrust bearings, and when the bearing is assembled: two thrust bearings are sleeved on the first screw rod 221, and the load acting forces of the two thrust bearings are opposite in direction; and/or two thrust bearings are sleeved on the second screw 222, and the load acting force directions of the two adjacent thrust bearings are opposite. Moreover, the design is not limited to the use of a thrust bearing, and the bearing may also be a deep groove ball bearing, etc., as long as the second lead screw 222 can be supported and the second lead screw 222 can rotate.

Referring to fig. 1, 2 and 4 to 6, the driving device 230 includes a driving motor 231 and a transmission member 232, an input end of the transmission member 232 is connected to an output end of the driving motor 231, and an output end of the transmission member 232 is connected to the first lead screw 221 and is driven by an end away from the reservoir 210. Here, the driving motor 231 mainly provides power for the operation of the lead screw assembly 220 and the piston 212. In this embodiment, the transmission member 232 may preferably be a parallel shaft gear box or a planetary gear box for better deceleration and reinforcement. Of course, in other embodiments, the transmission member 232 may not be provided, and the driving device 230 includes a driving motor 231, and an output end of the driving motor 231 is connected to one end of the first lead screw 221, which is far away from the liquid storage bin 210.

As shown in fig. 2 and 4 to 6, the liquid pushing mechanism 200 further includes a fixing tube 228, one end of the fixing tube 228 abuts against the outer wall of the liquid storage bin 210, a driving device 230 is installed at an end portion of the fixing tube 228 far from the liquid storage bin 210, the lead screw assembly 220 is embedded in a tube cavity of the fixing tube 228, and the fixing tube 228 can limit the lead screw nut 223 from rotating with the first lead screw 221 and has a function of guiding the lead screw nut 223. Specifically, the fixing tube 228 limits the rotation of the feed screw nut 223 in various ways, for example, but not limited to, a guide groove may be provided on the inner wall of the mounting inner cavity 110 of the housing 100, and a rib may be provided on the feed screw nut 223, and the rib may be slidably inserted in the guide groove; alternatively, a guide rod may be fixedly disposed in the mounting cavity 110, a guide arm is disposed on the lead screw nut 223, and a through hole for the guide rod to pass through is formed on the guide arm, so as to achieve the purpose of limiting the lead screw nut 223 from rotating synchronously with the first lead screw 221. It can be appreciated that, when the lead screw assembly 220 is disposed inside the hollow fixing tube 228, the fixing tube 228 can protect the internal components to some extent, so as to prevent other components in the electronic cigarette from affecting the movement of the lead screw, and facilitate the installation and fixation of the internal components. In addition, the outer surface of the driving motor 231 is provided with a fixing shell 231a, and the fixing shell 231a and the outer shell of the transmission member 232 can be fixedly connected through, for example, but not limited to, welding and the like, so that the protection effect on the driving motor 231 and the transmission member 232 is achieved, and the smooth operation of the driving motor 231 and the transmission member 232 is facilitated. It should be noted that, in the present embodiment, the circuit control board 400 is preferably attached to the outer surface of the fixing tube 228, so as to fully utilize the space and facilitate the purpose of further reducing the volume of the electronic cigarette.

As shown in fig. 2 and fig. 4 to 6, the liquid pushing mechanism 200 further includes a fixing member 240, the fixing member 240 is disposed on an end of the fixing tube 228 away from the reservoir 210, and the driving device 230 is mounted on the fixing member 240. Here, since the fixing member 240 is engaged with the inner wall surface of the housing 100 of the electronic cigarette, the fixing of the driving motor 231 and the transmission member 232 can be improved by the fixing member 240, so that the driving motor 231 and the transmission member 232 can be operated more stably. In addition, since the fixing member 240 is fixedly connected to the fixing tube 228, the fixing member 240 can also function as a certain stable liquid pushing mechanism.

Referring to fig. 7, in the present embodiment, the liquid pushing mechanism 200 further includes a limiting member 250, the limiting member 250 is fixedly installed at an end of the fixing tube 228 away from the liquid storage bin 210, a ring groove is formed on the first lead screw 221, and the limiting member 250 extends into the ring groove. It can be understood that the limiting member 250 is mainly used to prevent the first lead screw 221 from moving along the axial direction thereof, so as to keep the axial assembly position of the first lead screw 221 stable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A liquid pushing mechanism (200), characterized in that the liquid pushing mechanism comprises:

a liquid storage bin (210), the liquid storage bin (210) having a liquid outlet (213);

a piston (212), the piston (212) being fitted in the reservoir (210);

a lead screw assembly (220), the lead screw assembly (220) comprising a first lead screw (221), a second lead screw (222), a lead screw nut (223), and a pusher (225); the second screw rod (222) and the pushing piece (225) are arranged in a hollow mode along the axial direction, the second screw rod (222) is sleeved on the first screw rod (221), the first screw rod (221) drives the second screw rod (222) to rotate synchronously, the second screw rod (222) can move along the axis direction of the second screw rod (221) relative to the first screw rod, and the pushing piece (225) is sleeved on the second screw rod (222); the thread of the first lead screw (221) is meshed with the thread of the lead screw nut (223) to drive the lead screw nut to move along the axial direction of the first lead screw (221), the lead screw nut (223) is connected with the second lead screw (222) to drive the second lead screw (222) to move along the axial direction of the second lead screw, and the second lead screw (222) can rotate relative to the lead screw nut (223); one end of the pushing piece (225) is connected with the piston (212), at least part of the inner wall of the pushing piece (225) is provided with an internal thread, the internal thread of the pushing piece (225) is meshed with the external thread of the second screw rod (222), and the pushing piece (225) only drives the piston (212) to reciprocate in the liquid storage bin (210) along the axial direction of the second screw rod (222); and

the power output end of the driving device (230) is in driving connection with one end, far away from the liquid storage bin (210), of the first screw rod (221).

2. The mechanism of claim 1, wherein the reservoir (210) has a non-circular cross-sectional profile.

3. The plunger mechanism of claim 1, wherein the lead screw assembly (220) further comprises a guide (229), an end of the guide (229) is attached to the lead screw nut (223), and the guide (229) fits over the pusher (225) to limit rotation of the pusher (225) with the second lead screw (222).

4. The liquid pushing mechanism as recited in claim 1,

the screw assembly (220) further comprises a linkage piece (224), wherein the linkage piece (224) is assembled between the first screw (221) and the second screw (222) so that the second screw (222) rotates along with the first screw (221) synchronously.

5. The liquid pushing mechanism according to claim 1, wherein the driving device (230) comprises a driving motor (231), and an output end of the driving motor (231) is in driving connection with an end of the first lead screw (221) away from the liquid storage bin (210);

or the driving device (230) comprises a driving motor (231) and a transmission piece (232), the input end of the transmission piece (232) is connected with the output end of the driving motor (231), and the output end of the transmission piece (232) is in driving connection with one end, far away from the liquid storage bin (210), of the first screw rod (221).

6. The liquid pushing mechanism as claimed in any one of claims 1 to 5, wherein the liquid pushing mechanism (200) further comprises a fixing tube (228) and a fixing member (240), one end of the fixing tube (228) abuts against the outer wall of the reservoir (210), the fixing member (240) is disposed on the end of the fixing tube (228) far away from the reservoir (210), the driving device (230) is mounted on the fixing member (240), the lead screw assembly (220) is built in the lumen of the fixing tube (228), and the fixing tube (228) can limit the lead screw nut (223) to rotate with the first lead screw (221).

7. The fluid pushing mechanism according to claim 6, wherein the fluid pushing mechanism (200) further comprises a limiting member (250), the limiting member (250) is fixedly mounted on an end of the fixing tube (228) away from the reservoir (210), the first lead screw (221) has a circular groove, and the limiting member (250) extends into the circular groove.

8. The liquid pushing mechanism as claimed in claim 6, wherein the screw assembly (220) further comprises a support member (226), the support member (226) can be a bearing, and the bearing is sleeved on the end of the first screw (221) and/or the second screw (222) far away from the liquid storage bin (210).

9. An electronic cigarette, comprising:

a housing (100), the housing (100) having a mounting cavity (110) and an air intake (120);

an atomizing mechanism (300), the atomizing mechanism (300) being mounted in the mounting inner cavity (110);

the suction nozzle (500) is connected to the shell (100), the suction nozzle (500) is provided with a suction hole (510), and air flows through the atomizing mechanism (300) from the air inlet hole (120) and then flows to the suction hole (510); and

the liquid pushing mechanism (200) as claimed in any one of claims 1 to 8, wherein the liquid pushing mechanism (200) is assembled in the installation inner cavity (110), and the liquid outlet (213) is communicated to the atomizing mechanism (300).

10. The electronic cigarette of claim 9, further comprising:

a circuit control board (400), wherein the circuit control board (400) is installed in the installation inner cavity (110), and the circuit control board (400) is electrically connected with the atomization mechanism (300) and the driving device (230); and

the negative pressure detector (330), the negative pressure detector (330) is installed in the air flow channel space between the atomizing mechanism (300) and the suction nozzle (500), and the negative pressure detector (330) is electrically connected with the circuit control board (400).