CN115228519A - Droplet generation drive mechanism - Google Patents
Droplet generation drive mechanism Download PDFInfo
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- CN115228519A CN115228519A CN202210760917.6A CN202210760917A CN115228519A CN 115228519 A CN115228519 A CN 115228519A CN 202210760917 A CN202210760917 A CN 202210760917A CN 115228519 A CN115228519 A CN 115228519A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6806—Preparing nucleic acids for analysis, e.g. for polymerase chain reaction [PCR] assay
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2563/00—Nucleic acid detection characterized by the use of physical, structural and functional properties
- C12Q2563/159—Microreactors, e.g. emulsion PCR or sequencing, droplet PCR, microcapsules, i.e. non-liquid containers with a range of different permeability's for different reaction components
Abstract
The application provides a liquid drop generation driving mechanism, which belongs to the technical field of biomedical detection equipment, and comprises a power assembly, a vibration seat and an amplitude reduction assembly; the power assembly is used for providing vibration force; the amplitude reducing assembly is in transmission connection with the power assembly and the vibration seat, and the power assembly drives the vibration seat to vibrate through the amplitude reducing assembly; the amplitude reducing component is used for reducing the amplitude transmitted by the power component, and finally achieves the purpose of reducing the amplitude of the vibration seat, so that the vibration seat achieves the preset output amplitude. The motor precision control method and the motor precision control device aim at solving the technical problem that in the prior art, the motor precision requirement is high by adopting a motor direct driving mode, and then the production cost is increased.
Description
Technical Field
The application belongs to the technical field of biomedical check out test set, especially relates to a liquid drop generates actuating mechanism.
Background
The digital PCR technology is the third generation PCR technology after the ordinary PCR of the first generation and the fluorescent quantitative PCR of the second generation. The technology is judged as one of ten major breakthrough technologies by science and technology review of science and technology university of Massachusetts in 2013, and one of ten global emerging technologies is selected from world economic forum in 2017. The digital PCR can realize absolute quantification of one in ten thousand rare samples, and can be used for detection of trace nucleic acid samples, detection of rare mutation under a complex background, identification of small difference of expression amount, single cell gene expression and the like. The digital PCR plays a great role in the field of molecular diagnosis, is suitable for research of tumor biomarkers, copy number variation analysis, microbial detection, transgenic biological detection, mRNA and miRNA detection, gene relative expression research and the like, provides a brand new technical thought and means for research of genetic diseases, cancers and prenatal diagnosis, and has wide and irreplaceable application prospects.
The generation of micro-droplets is an important technique in the PCR experimental scheme, which utilizes the interaction between the fluid shear force and the surface tension of the liquid to divide the continuous liquid into micro-droplets with discrete nano-scale and sub-volume, wherein the most important is how to apply enough force to disturb the interfacial tension existing between the continuous phase and the dispersed phase, so as to achieve unbalance and fracture. When the force applied to a certain position of the continuous phase is larger than the self-tension of the dispersed phase, the trace liquid at the position can be separated from the dispersed phase and enters the continuous phase to form micro-droplets. The process needs to rely on a power transmission device to transmit energy to the continuous phase and the dispersed phase, so that the continuous phase and the dispersed phase generate interaction force and complete the formation action of micro-droplets. The stable power transmission scheme plays a crucial role in continuously and stably generating micro-droplets.
Most of power transmission devices applied to the current market are provided with motors, and the output ends of the motors are directly connected with the vibration seat, so that the swing angle of the motors is the swing angle of the vibration seat. Because the angle of the vibration seat required to swing in the micro-droplet generation process is very small, and the swing range is mostly +/-1 degree, the precision requirement on the motor is extremely high, and the production cost is greatly increased due to the adoption of the high-precision motor; in addition, for the high-precision motor of the directly connected vibration seat, the motor has less market sales volume and is not easy to obtain, and most motors need to be specially customized, so that the production cost is further increased.
Disclosure of Invention
An object of this application is to provide a liquid droplet generates actuating mechanism, aims at solving the technical problem that adopts the mode of motor direct drive to require the height to the motor precision and then lead to manufacturing cost to increase among the prior art.
An object of the present application is to provide a droplet generation drive mechanism, comprising:
a power assembly for providing a vibratory force;
a vibration seat; and
the amplitude reducing assembly is in transmission connection with the power assembly and the vibration seat, and the power assembly drives the vibration seat to vibrate through the amplitude reducing assembly; the amplitude reducing assembly is used for reducing the amplitude of the vibration seat.
Further, the dampening assembly comprises a first transmission assembly and a second transmission assembly;
the first transmission assembly is connected to the power assembly so as to enable the first transmission assembly to rotate and reciprocate within a first preset angle range;
the second transmission assembly is provided with a rotation center and is in transmission connection with the first transmission assembly so as to drive the second transmission assembly to rotate and reciprocate along the rotation center within a second preset angle range, and the second preset angle range is smaller than the first preset angle range;
and the vibration seat is connected to the rotation center of the second transmission assembly.
Further, the first transmission assembly comprises a first gear piece connected to the power assembly, the second transmission assembly comprises a second gear piece, the second gear piece is meshed with the first gear piece, and the transmission ratio of the first gear piece to the second gear piece is greater than 1; the vibration seat is connected to the rotation center of the second gear member.
Further, the first gear member and the second gear member are both cylindrical gears.
Further, the first gear piece is a worm, and the second gear piece is a worm wheel.
Furthermore, the liquid drop generation driving mechanism further comprises a third transmission assembly, wherein the third transmission assembly is positioned between the first transmission assembly and the second transmission assembly and is respectively in transmission connection with the first transmission assembly and the second transmission assembly so as to drive the second transmission assembly to move through the first transmission assembly.
Further, the first transmission assembly comprises a first cylindrical gear connected to the power assembly, the second transmission assembly comprises a second cylindrical gear, and the third transmission assembly is respectively meshed with the first cylindrical gear and the second cylindrical gear; the vibration seat is connected to the rotation center of the second cylindrical gear.
Furthermore, the third transmission assembly comprises a synchronous belt with a tooth-shaped structure on a matching surface, the synchronous belt is sleeved outside the first cylindrical gear and the second cylindrical gear respectively, and the tooth-shaped structure is in meshing transmission with gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear respectively.
Furthermore, the third transmission assembly comprises a transmission chain, and the transmission chain is sleeved on the outer circumferences of the first cylindrical gear and the second cylindrical gear and is in meshing transmission with gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear respectively.
Further, the third transmission assembly comprises a transmission rack, and the tooth-shaped structure of the transmission rack is respectively meshed with the gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear for transmission.
Compared with the prior art, the beneficial effects of the application are that: compared with the prior art, the liquid drop generation driving mechanism has the advantages that the amplitude reducing assembly is additionally arranged between the power assembly and the vibration seat and is connected with the power assembly and the vibration seat, so that the amplitude transmitted to the vibration seat by the power assembly is reduced, and the amplitude of the vibration seat is smaller than that of the power assembly, so that the vibration seat can vibrate within a smaller preset output amplitude range, the requirement on the precision of the power assembly can be reduced, and the power assembly with lower precision can achieve preset smaller output amplitude; the power assembly with lower precision can reduce the manufacturing cost of the whole liquid drop generation driving mechanism and can ensure the precision and stability of the experiment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a droplet generation driving mechanism provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a droplet generation driving mechanism according to an embodiment of the present disclosure;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a third schematic structural diagram of a droplet generation drive mechanism provided in an embodiment of the present application;
FIG. 5 is a fourth schematic structural view of a droplet generation drive mechanism provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a droplet generation driving mechanism according to an embodiment of the present disclosure.
Description of reference numerals: 1. a power assembly; 2. a first transmission assembly; 3. a second transmission assembly; 4. a vibration seat; 5. and a third transmission assembly.
Detailed Description
Reference will now be made in detail to embodiments of the present application, 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 exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "upward," "vertical," "horizontal," "bottom," "inner," "outer," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience in describing the present application 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 thus, should not be considered as limiting the present application.
Furthermore, the terms "first", "second", etc. 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 application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments.
The generation of micro-droplets is an important technique in the PCR experimental scheme, which utilizes the interaction between the fluid shear force and the surface tension of the liquid to divide the continuous liquid into micro-droplets with discrete nano-scale and sub-scale volumes, wherein the most important thing is how to apply a sufficient force to disturb the interfacial tension existing between the continuous phase and the dispersed phase, so as to achieve imbalance and fracture.
The angle that needs the vibration seat to carry out the wobbling in the micro-droplet generation process is very little, and the hunting range is mostly at 1, so the required precision to power component is high, power component need adopt the motor of high accuracy, the use of motor of high accuracy causes manufacturing cost to increase substantially, the cost of motor becomes the main cost of whole experimental apparatus, so how to reduce the cost of power component part, and can guarantee that the precision and the stability of experiment become the technological problem that awaits solution in the micro-droplet generation technique.
Therefore, the following technical scheme is provided for the technical problem that the precision requirement of the motor is high and the production cost is increased by adopting a direct motor driving mode in the prior art.
Example one
Referring to fig. 1, an embodiment of the present invention provides a droplet generation driving mechanism, which includes a power assembly 1, a vibration seat 4, and an amplitude reduction assembly; the power assembly 1 is used for providing vibration force; the amplitude reducing assembly is in transmission connection with the power assembly 1 and the vibration seat 4, and the power assembly 1 drives the vibration seat 4 to vibrate through the amplitude reducing assembly; the amplitude reducing component is used for reducing the amplitude transmitted by the power component 1, and finally achieves the purpose of reducing the amplitude of the vibration seat 4, so that the vibration seat 4 achieves the preset output amplitude.
Specifically, the power assembly 1 is used for providing vibration force (or power), the power assembly 1 can adopt a motor, and the motor used by the driving device can adopt a conventional brushless stepping motor, and the motor is provided with an output end which is connected with the input end of the amplitude-reducing assembly.
The vibration seat 4 can be connected with an external structure capable of extruding liquid drops, the vibration of the vibration seat 4 can generate micro liquid drops, and the size and the forming stability of the micro liquid drops are closely related to the output amplitude of the vibration seat 4; for the PCR experiment, the micro-droplets meeting the requirements can be generated only by controlling the vibration seat 4 to reach the preset output amplitude, in this embodiment, the preset output amplitude refers to the vibration angle of the vibration seat 4 being between 0.5 ° and 5 °.
Referring to fig. 1, the damping assembly is drivingly connected between the power assembly 1 and the vibration base 4, and the vibration force generated by the power assembly 1 is transmitted to the vibration base 4 through the damping assembly, so that the vibration base 4 vibrates.
The amplitude of the power assembly 1 is larger than that of the vibration seat 4, the amplitude reducing assembly is used for reducing the amplitude transmitted by the power assembly 1, and finally the amplitude of the vibration seat 4 is smaller than the original amplitude of the power assembly 1, so that the aim of reducing the amplitude of the vibration seat 4 is fulfilled.
The liquid drop generating and driving mechanism can further comprise a supporting structure, the power assembly 1, the amplitude reducing assembly and the vibration seat 4 can be connected to the supporting structure, the supporting structure can support the power assembly 1, the amplitude reducing assembly and the vibration seat 4, and the supporting structure can adopt a shell structure.
In the embodiment, the amplitude reducing assembly is additionally arranged between the power assembly 1 and the vibration seat 4, and the power assembly 1 and the vibration seat 4 are connected through the amplitude reducing assembly, so that the amplitude transmitted to the vibration seat 4 by the power assembly 1 is reduced, and the amplitude of the vibration seat 4 is smaller than that of the power assembly 1, so that the vibration seat 4 can vibrate within a smaller preset output amplitude range, and further the requirement on the precision of the power assembly 1 can be reduced, and the power assembly 1 with lower precision (the amplitude is larger than the preset output amplitude) is adopted, so that the preset smaller output amplitude can be achieved; the power assembly 1 with lower precision can reduce the manufacturing cost of the whole liquid drop generation driving mechanism and can ensure the precision and stability of the experiment.
In one embodiment, as shown with reference to fig. 1 and 2, the dampening assembly comprises a first transmission assembly 2 and a second transmission assembly 3; the first transmission assembly 2 is connected to the power assembly 1, so that the first transmission assembly 2 can perform rotary reciprocating motion within a first preset angle range; the second transmission component 3 is provided with a rotation center, the second transmission component 3 is in transmission connection with the first transmission component 2 so as to drive the second transmission component 3 to rotate and reciprocate along the rotation center within a second preset angle range, and the second preset angle range is smaller than the first preset angle range; the vibration seat 4 is connected to the rotation center of the second transmission assembly 3.
Referring to fig. 1 and 2, the first transmission assembly 2 and the second transmission assembly 3 may both adopt gear members, specifically, the first transmission assembly 2 includes a first gear member connected to the power assembly 1, the second transmission assembly 3 includes a second gear member, the second gear member is engaged with the first gear member, and the transmission ratio of the first gear member and the second gear member is greater than 1; the vibration seat 4 is connected to the rotation center of the second gear member.
Specifically, the power assembly 1 adopts a motor, an output end of the motor is connected with a first gear piece, and an output end (output shaft) of the motor swings in a reciprocating manner (or called as rotary reciprocating movement) so as to enable the first gear piece to swing in a reciprocating manner within a first preset angle range, and for a PCR experiment, the reciprocating swing is high-frequency swing within an angle range of technical correction so as to form high-frequency vibration; the first gear piece is meshed with the second gear piece, so that power is transmitted to the second gear piece, the second gear piece similarly performs high-frequency reciprocating swing within a second preset angle range (preset output amplitude), the reciprocating swing of the second gear piece enables the vibration seat 4 connected to the rotation center of the second gear piece to simultaneously perform reciprocating swing, and the swing angle of the vibration seat 4 is consistent with the swing angle of the second gear piece.
The second preset angle range is smaller than the first preset angle range, namely the reciprocating swing angle of the second gear piece is smaller than the reciprocating swing angle of the first gear piece, so that vibration with smaller amplitude (larger precision grade) is realized through motor vibration with lower precision grade, a high-cost motor is not needed, and manufacturing and test cost is reduced.
For the meshing transmission of the gear pieces, the second preset angle range is smaller than the first preset angle range, the transmission ratio of the first gear piece to the second gear piece can be designed to be larger than 1, namely, the number of teeth of the second gear piece is larger than that of the first gear piece, and the diameter of the second gear piece is larger than that of the first gear piece, so that the purposes of reducing the amplitude and reducing the swing angle are achieved.
In one embodiment, and as shown with reference to FIG. 1, the first gear member and the second gear member are each cylindrical gears.
Specifically, spur gear can adopt straight-tooth spur gear, and the axis looks parallel arrangement of first gear spare and second gear spare, first gear spare and second gear spare all rotate to be connected on bearing structure. The cylindrical gear has low manufacturing cost and is beneficial to reducing the manufacturing cost of the mechanism.
Example two
In contrast to the first embodiment, referring to fig. 2 and 3, the first gear member is a worm, the second gear member is a worm wheel, the worm is in mesh transmission with the worm wheel, and a central axis of the worm is perpendicular to an axis of the worm wheel.
Specifically, the motor that this drive arrangement used adopts conventional brushless step motor, and the end connection of worm is in the output of motor, and the axis of worm is perpendicular with the axis of worm wheel, and vibration seat 4 is connected in the center of worm wheel, and worm wheel all connect in bearing structure, and the motor rotates and drives the worm and rotate, and worm wheel meshing transmission finally transmit power to vibration seat 4, make vibration seat 4 carry out the reciprocal swing of high frequency in the second preset angle scope.
Wherein, the transmission ratio of the meshing of the worm and the worm wheel is more than 1, so as to achieve the purposes of reducing the amplitude and the swing angle.
EXAMPLE III
Unlike the first and second embodiments, referring to fig. 4 to 6, the droplet generation driving mechanism further includes a third transmission assembly 5, and the third transmission assembly 5 is located between the first transmission assembly 2 and the second transmission assembly 3 and is respectively in transmission connection with the first transmission assembly 2 and the second transmission assembly 3 so as to drive the second transmission assembly 3 to move through the first transmission assembly 2.
Specifically, the third transmission assembly 5 is connected between the first transmission assembly 2 and the second transmission assembly 3 in a transmission manner, the third transmission assembly 5 can transmit the motion of the first transmission assembly 2 to the second transmission assembly 3 to drive the vibration seat 4 connected to the second transmission assembly 3 to vibrate at high frequency, and the second preset angle of the reciprocating swing of the second transmission assembly 3 is smaller than the first preset angle of the reciprocating swing of the first transmission assembly 2 through the connection of the third transmission assembly 5.
In this embodiment, by additionally providing the third transmission assembly 5, the distance between the first transmission assembly 2 and the second transmission assembly 3 can be increased, and the arrangement of various position relationships between the first transmission assembly 2 and the second transmission assembly 3 can be realized by the third transmission assembly 5, so as to facilitate the optimization of the overall structure of the droplet generation driving mechanism.
In one embodiment, as shown in fig. 4-6, the first transmission assembly 2 comprises a first cylindrical gear connected to the power assembly 1, the second transmission assembly 3 comprises a second cylindrical gear, and the third transmission assembly 5 is engaged with the first cylindrical gear and the second cylindrical gear respectively; the vibration seat 4 is connected to the rotation center of the second cylindrical gear.
In the present embodiment, the power assembly 1 employs a brushless stepping motor, the first transmission assembly 2 and the second transmission assembly 3 employ gear members and employ cylindrical gears, the vibration seat 4 is connected to a rotation center (wheel center) of the second cylindrical gear, and the third transmission assembly 5 is engaged with the first cylindrical gear and the second cylindrical gear respectively to drive the second cylindrical gear to swing back and forth within a preset angle range through the first cylindrical gear.
In one embodiment, referring to fig. 4, the third transmission assembly 5 includes a timing belt having a tooth-shaped structure on a mating surface thereof, the timing belt is respectively sleeved outside the first cylindrical gear and the second cylindrical gear, and the tooth-shaped structure is respectively engaged with gear teeth provided on outer circumferences of the first cylindrical gear and the second cylindrical gear for transmission.
Specifically, referring to fig. 4, the annular inner wall surface of the synchronous belt is provided with a plurality of tooth-shaped structures, which may also be called as meshing teeth, the plurality of meshing teeth are uniformly distributed along the inner wall surface of the synchronous belt, and the meshing teeth can mesh with gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear for transmission.
In this embodiment, the structural design of the synchronous belt can improve the meshing relationship between the first transmission assembly 2 (first cylindrical gear) and the second transmission assembly 3 (second cylindrical gear), so that the first transmission assembly 2 and the second transmission assembly 3 are not in direct contact, the abrasion between the first transmission assembly 2 and the second transmission assembly 3 can be reduced, and the more optimized spatial position relationship layout is favorably realized.
Example four
In a third difference from the embodiment, referring to fig. 5, the third transmission assembly 5 includes a transmission chain, the transmission chain is sleeved on the outer circumferences of the first cylindrical gear and the second cylindrical gear and is engaged with the gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear, respectively, for transmission, and the motor used in the driving device is a conventional brushless stepping motor.
In this embodiment, the structural design of the transmission chain can improve the meshing relationship between the first transmission assembly 2 (first cylindrical gear) and the second transmission assembly 3 (second cylindrical gear), so that the first transmission assembly 2 and the second transmission assembly 3 are not in direct contact, the abrasion between the first transmission assembly 2 and the second transmission assembly 3 can be reduced, and the more optimized spatial position relationship layout is facilitated to be realized.
EXAMPLE five
In contrast to the third and fourth embodiments, referring to fig. 6, the third transmission assembly 5 includes a transmission rack, and the tooth-shaped structure of the transmission rack is engaged with the gear teeth provided on the outer circumferences of the first cylindrical gear and the second cylindrical gear, respectively.
Specifically, referring to fig. 6, the transmission rack is arranged on one side of the first cylindrical gear and one side of the second cylindrical gear, a plurality of meshing teeth are arranged on one side of the transmission rack, the plurality of meshing teeth are evenly distributed along the length direction of the transmission rack, and the meshing teeth can be meshed with gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear for transmission; the motor used by the driving device adopts a conventional brushless stepping motor.
In this embodiment, the structural design of the transmission rack can improve the meshing relationship between the first transmission assembly 2 (first cylindrical gear) and the second transmission assembly 3 (second cylindrical gear), so that the first transmission assembly 2 and the second transmission assembly 3 are not in direct contact, the abrasion between the first transmission assembly 2 and the second transmission assembly 3 can be reduced, and the more optimized spatial position relationship layout is facilitated to be realized.
The foregoing is considered as illustrative only of the preferred embodiments of the invention, and is presented only for the purpose of illustrating the principles of the invention and not in any way to limit its scope. Any modifications, equivalents and improvements made within the spirit and principles of the present application and other embodiments of the present application without the exercise of inventive faculty will occur to those skilled in the art and are intended to be included within the scope of the present application.
Claims (10)
1. A droplet generation drive mechanism for providing a drive force when generating droplets, comprising:
a power assembly for providing a vibratory force;
a vibration seat; and
the amplitude reducing assembly is in transmission connection with the power assembly and the vibration seat, and the power assembly drives the vibration seat to vibrate through the amplitude reducing assembly; the amplitude reducing assembly is used for reducing the amplitude of the vibration seat.
2. The drop generating drive mechanism as in claim 1, wherein the dampening assembly comprises a first drive assembly and a second drive assembly;
the first transmission assembly is connected to the power assembly so that the first transmission assembly can perform rotary reciprocating motion within a first preset angle range;
the second transmission assembly is provided with a rotation center and is in transmission connection with the first transmission assembly so as to drive the second transmission assembly to rotate and reciprocate along the rotation center within a second preset angle range, and the second preset angle range is smaller than the first preset angle range;
and the vibration seat is connected to the rotation center of the second transmission assembly.
3. The drop generating drive mechanism according to claim 2, wherein said first transmission assembly comprises a first gear member connected to said power assembly, said second transmission assembly comprises a second gear member, said second gear member is engaged with said first gear member, and the transmission ratio of said first gear member and said second gear member is greater than 1; the vibration seat is connected to the rotation center of the second gear member.
4. A droplet generation drive mechanism according to claim 3, wherein the first and second gear members are cylindrical gears.
5. A droplet generation drive mechanism according to claim 3, wherein the first gear member is a worm and the second gear member is a worm gear.
6. The droplet generation drive mechanism of claim 2, further comprising a third transmission assembly disposed between and drivingly connected to the first transmission assembly and the second transmission assembly, respectively, for driving the second transmission assembly in motion via the first transmission assembly.
7. The drop generating drive mechanism according to claim 6, wherein said first transmission assembly comprises a first cylindrical gear coupled to said power assembly, said second transmission assembly comprises a second cylindrical gear, and said third transmission assembly is in meshing engagement with said first cylindrical gear and said second cylindrical gear, respectively; the vibration seat is connected to the rotation center of the second cylindrical gear.
8. The droplet generation driving mechanism of claim 7, wherein the third transmission assembly comprises a synchronous belt having a tooth-shaped structure on a mating surface thereof, the synchronous belt is respectively sleeved outside the first cylindrical gear and the second cylindrical gear, and the tooth-shaped structure is respectively engaged with gear teeth provided on outer circumferences of the first cylindrical gear and the second cylindrical gear for transmission.
9. The droplet generation driving mechanism of claim 7, wherein the third transmission assembly comprises a transmission chain, and the transmission chain is sleeved on the outer circumferences of the first cylindrical gear and the second cylindrical gear and is in mesh transmission with gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear respectively.
10. The droplet generation drive mechanism of claim 7, wherein the third transmission assembly comprises a transmission rack, and the tooth-shaped structure of the transmission rack is meshed with the gear teeth arranged on the outer circumferences of the first cylindrical gear and the second cylindrical gear respectively.
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| CN202210760917.6A CN115228519A (en) | 2022-06-30 | 2022-06-30 | Droplet generation drive mechanism |
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| JP2015045362A (en) * | 2013-08-28 | 2015-03-12 | 株式会社東海理化電機製作所 | Power transmission mechanism and input device equipped with the same |
| CN104655832A (en) * | 2013-11-15 | 2015-05-27 | 秋田爱普生株式会社 | Droplet oscillation device and droplet oscillation method |
| CN207734093U (en) * | 2017-07-24 | 2018-08-17 | 惠州市爱博智控设备有限公司 | A kind of novel closestool automatic cover-turning device |
| CN207963213U (en) * | 2017-12-16 | 2018-10-12 | 洛阳斯特林智能传动科技有限公司 | A kind of tracking driving device and heliostat and tower solar-thermal generating system |
| CN216224451U (en) * | 2021-03-17 | 2022-04-08 | 北京达微生物科技有限公司 | Asymmetric vibration micro-droplet generation mechanism |
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