CN219482410U - Vibration mechanism - Google Patents

Abstract

The utility model provides a vibration mechanism, wherein a sample carrier is used for loading a solution; the first swing connecting part and the second swing connecting part are connected with the sample carrier and swing around the same swing shaft; the eccentric wheel is in transmission connection with the rotary driving part, the connecting rod is connected with the eccentric wheel and eccentrically arranged relative to the rotation center of the eccentric wheel, the first swing connecting part is provided with a chute, a sliding connecting piece is arranged in the chute in a sliding way, the sliding connecting piece is connected with the connecting rod, and the distribution direction of the chute is tangential to the swing radial direction of the first swing connecting part. According to the utility model, the sample carrier is driven to reciprocate through the eccentric structure, so that the vibration effect is achieved, the solution is rapidly mixed, and the reaction force born by the transmission structure and the output shaft of the rotary driving part is obviously reduced in a mode that the chute is tangential to the swinging radial direction, so that the cyclic stress can be greatly reduced, and the fatigue life and reliability of the mechanism are effectively improved.

Description

Vibration mechanism

Technical Field

The utility model relates to the technical field of detection instruments, in particular to a vibration mechanism.

Background

In biological extraction, animal and plant tissues, blood, body fluid and other samples can be extracted by matching with different types of extraction reagents. The sample type is suitable for extracting and purifying nucleic acid such as serum, plasma, throat swab, anus swab, excrement, genital secretion, exfoliated cells, urine, sputum and the like. Obviously, different reagents are required to be dripped into the sample for different tests, and operations such as mixing, vibration and the like are required to be performed after dripping so as to ensure that the reagents are fully mixed with the sample.

In the prior art, the mixing of the solution mainly has two modes, one mode is that equipment such as stirring paddles are adopted to stir the liquid, the purpose of uniform mixing is achieved, the mixing method is not suitable for medical tests, and the reasons are that a liquid sample is usually contained in a test tube, the caliber of the test tube is small, the stirring paddles with proper size cannot be easily found, and the stirring paddles easily cause overflow of the liquid sample or damage of the test tube in high-speed rotation. Secondly, the mixing is carried out in a vibration mode, and the mixing method is commonly used in medical experiments, but the current vibration mostly adopts reciprocating motion in the vertical direction, so that the test tube is required to be sealed, and the test tube is prevented from being scattered in the vibration process.

In the prior art, there are devices for mixing solutions by swinging (vibration), but such devices generally require high-frequency vibration driving and transmission, and the transmission structure is subjected to large cyclic stress, so that the fatigue life is reduced and frequent replacement and maintenance are required.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned drawbacks of the related art, and an object of the present utility model is to provide a mechanism which can perform mixing of a reagent sample, is suitable for high-frequency vibration, and has better reliability and service life.

In order to achieve the above object, the present utility model provides a vibration mechanism including a sample carrier, a rotation driving part, an eccentric wheel, a connecting rod, a first swing connecting part and a second swing connecting part;

the sample carrier is for loading a solution;

the first swing connecting part and the second swing connecting part are connected with the sample carrier, and swing around the same swing shaft;

the eccentric wheel is in transmission connection with the rotary driving part, the connecting rod is connected with the eccentric wheel and is eccentrically arranged relative to the rotation center of the eccentric wheel, the first swing connecting part is provided with a chute, a sliding connecting piece is arranged in the chute in a sliding mode, the sliding connecting piece is connected with the connecting rod, and the distribution direction of the chute is tangential to the swing radial direction of the first swing connecting part.

Further, the first swing connecting part is a first bearing seat, and the second swing connecting part is a second bearing seat; the sliding connecting piece is a bearing.

Further, the second bearing is provided with a connecting hole, a connecting screw is arranged in the connecting hole in a penetrating mode, and the connecting screw is fixed at the position of the swinging shaft.

Further, the driving mode of the rotation driving part comprises continuous rotation output and positive and negative period rotation output.

Further, the rotation driving part is a motor.

Further, the vibration mechanism further comprises a position sensor for sensing the oscillation of the sample carrier.

Further, the position sensor comprises a photoelectric switch and a light blocking sheet, wherein the photoelectric switch is fixedly arranged, and the light blocking sheet swings along with the sample carrier.

Further, the sample carrier comprises a deep well plate and a fixed tray;

the fixing tray is provided with a top plate, a top pressure mounting groove, a top pressure mounting plate and a top pressure spring, the top plate is movably connected with the top pressure mounting groove, the top pressure mounting plate is detachably connected with the fixing tray, the top pressure spring is arranged between the top plate and the top pressure mounting plate, and the top plate is in contact with the side surface of the deep hole plate.

Further, the top plate is formed with an inverted slope for guiding the installation of the deep hole plate.

Further, a heating component is arranged in the fixed tray and is used for heating the solution.

The scheme of the utility model has the following beneficial effects:

according to the vibration mechanism provided by the utility model, the eccentric wheel is driven by the motor to perform turnover movement, the eccentric connecting rod connected with the eccentric wheel drives the sample carrier to reciprocate, so that the vibration effect is achieved, the solution is rapidly mixed, and the reaction force born by the transmission structure and the output shaft of the rotary driving part is obviously reduced in a mode that the chute is tangential to the swinging radial direction, so that the cycle stress can be greatly reduced, and the fatigue life and the reliability of the mechanism are effectively improved; meanwhile, a photoelectric switch is adopted to detect a signal passing by a sample carrier, and then the motor is controlled to rotate according to the signal, so that regular high-frequency vibration is realized, and the uniformity of solution mixing is improved; in addition, the stability of the sample carrier and the heating and mixing of the solution are ensured, and the sample carrier is suitable for the pipelined online operation;

other advantageous effects of the present utility model will be described in detail in the detailed description section which follows.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a vibration drive assembly according to the present utility model;

FIG. 3 is another schematic view of the vibration driving assembly of the present utility model;

FIG. 4 is a diagram of the swing process (first state) according to the present utility model;

FIG. 5 is a diagram of the swing process (second state) according to the present utility model;

FIG. 6 is a schematic diagram of the swing position of the present utility model;

FIG. 7 is a schematic view of a sample carrier of the present utility model;

FIG. 8 is a schematic view of an explosion of the roof;

fig. 9 is a schematic diagram of the inverted slope structure of the top plate according to the present utility model.

[ reference numerals description ]

100. A sample carrier; 110. a carrier assembly; 111. a fixed tray; 112. a top plate; 113. a pressing spring; 114. pressing the mounting plate; 115. jacking the mounting groove; 116. perforating a bolt; 117. an inverted slope; 120. a sample container; 121. a deep well plate; 200. a vibration driving assembly; 201. an eccentric wheel; 202. a connecting rod; 203. a first bearing seat; 204. a second bearing seat; 205. a chute; 206. a bearing; 207. a connecting screw; 208. a rotating bracket; 209. a motor; 300. a position sensor; 301. an optoelectronic switch; 302. a light blocking sheet; 400. a bottom plate.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. 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 be within the scope of the utility model. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of 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 "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a locked connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-9, embodiments of the present utility model provide a vibration mechanism that includes a sample carrier 100 and a vibration drive assembly 200. The sample carrier 100 includes a carrier assembly 110 and a sample container 120, the sample container 120 is used for loading a mixed solution of a sample and a reagent, the carrier assembly 110 is used for supporting and fixing the sample container 120, and the vibration driving assembly 200 drives the whole sample carrier 100 to vibrate at high frequency, so that the sample and the reagent are fully mixed.

In this embodiment, taking the deep hole plate 121 as an example, the deep hole plate 121 is used as a sample container 120 commonly used in sample detection, and has multiple rows of deep holes, each row of deep holes may be filled with different mixed solutions, and each row of deep holes includes a plurality of equal deep holes, i.e. the deep holes are in a neat array arrangement. It should be noted that the depth of the deep holes is usually more than 40mm, the amount of liquid contained in each deep hole is small, and the amplitude of high-frequency vibration of the deep hole plate 121 driven by the vibration driving assembly 200 is 0-30 degrees, so that the liquid in the deep hole cannot splash.

Referring to fig. 2 and 3 again, the vibration driving assembly 200 in the present embodiment includes a rotation driving portion and an eccentric transmission portion. The eccentric transmission part comprises an eccentric wheel 201, one end of the eccentric wheel 201 is fixedly connected with the output shaft of the rotary driving part, the other end of the eccentric wheel is provided with a connecting rod 202, and the connecting rod 202 and the output shaft of the rotary driving part are not on the same central line, so that the eccentric transmission part can eccentrically rotate under the driving of the rotary driving part.

Correspondingly, the carrier assembly 110 is connected with a first bearing housing 203 and a second bearing housing 204. The first bearing seat 203 is provided with a sliding groove 205, a bearing 206 is slidably disposed in the sliding groove 205, and the bearing 206 is fixedly connected with the connecting rod 202. The second bearing block 204 is rotatably connected to a rotating bracket 208 by a connecting screw 207 (the connecting screw 207 is a profiled screw having a smooth rotating support surface), and the rotating bracket 208 is fixedly provided to rotatably support the whole sample carrier 100.

Of course, in other embodiments, the transmission manner of the bearing 206 may be replaced, for example, the size of the chute 205 may be reduced, and the two ends of the pin may be located outside the chute 205 by adopting a pin connection manner, and the pin may be limited in the chute 205 by a nut or the like, so that the end of the connecting rod 202 is rotatably connected with the pin.

Referring to fig. 4 and 5 again, the rotation driving portion drives the eccentric wheel 201 to rotate, because the output shafts of the connecting rod 202 and the rotation driving portion are not on the same central line, when the connecting rod 202 rotates, the bearing 206 slides back and forth in the chute 205, and the second bearing seat 204 is rotationally connected with the rotation bracket 208, so that the first bearing seat 203 and the second bearing seat 204 drive the sample carrier 100 to rotate, thereby realizing the reciprocating swing of the deep hole plate 121, and forming the high-frequency vibration effect.

Referring again to fig. 6, based on the arrangement of the second bearing 204, the whole of the sample carrier 100, the first bearing housing 203 and the second bearing 204 swings about a set swing axis, i.e. the axis of the connecting screw 207 on which the second bearing 204 is rotatably connected. Meanwhile, the whole body swings to have a swinging symmetry plane, and when the central line of the whole body is positioned in the swinging symmetry plane, the central line of the whole body is positioned at the 0-degree position of swinging.

The distribution direction of the sliding groove 205 in this embodiment is perpendicular to the swing radius of the sample carrier 100, so that when the whole is located at the swing 0 degree position, the sliding groove 205 is perpendicular to the swing symmetry plane. When the rotation driving unit drives the rotation, the entire rotation starts from the 0 degree position, and at this time, the link 202 and the bearing 206 are also located at the 0 degree position, that is, in the rotation symmetry plane, so that the instantaneous speed direction of the bearing 206 is the direction perpendicular to the rotation radius, that is, the direction perpendicular to the rotation symmetry plane.

Based on the direction setting of the chute 205, the reaction force of the inner wall of the instantaneous chute 205 to the bearing 206 is zero, and during the continuous rotation of the connecting rod 202 and the bearing 206 around the output shaft of the rotation driving part, the bearing 206 gradually slides and acts with the inner wall of the chute 205, so as to drive the chute 205 and the like to rotate around the swinging shaft and swing.

It can be understood that, since the swing angle of the vibration mechanism is only 0-30 degrees, the deflection angle of the sliding groove 205 is also 0-30 degrees, and only a small force of the bearing 206 is always received, compared with the arrangement mode in which the distribution direction of the sliding groove 205 is consistent with the swing radius of the sample carrier 100 (the reaction force of the inner wall of the sliding groove 205 is the largest when the mode is at the 0 degree position), the reaction force of the transmission structures such as the bearing 206, the connecting rod 202, the eccentric wheel 201 and the output shaft of the rotary driving part is obviously reduced, so the cycle stress can be greatly reduced, and the fatigue life and reliability of the mechanism are effectively improved.

Referring to fig. 3 again, in the present embodiment, the rotation driving portion adopts the motor 209 to perform rotation driving. It can be appreciated that the motor 209 can be driven to generate swing through both continuous rotation output and positive and negative period rotation output, and preferably adopts a driving mode of positive and negative period rotation output. Preferably, a position sensor 300 for sensing the oscillation of the sample carrier 100 is also provided. The frequency of oscillation of the sample carrier 100 is determined by the position sensor 300, and the corresponding motor 209 controller outputs a corresponding pulse frequency, so as to control the frequency of oscillation of the deep aperture plate 121.

In particular, in the present embodiment, the position sensor 300 may be in the form of a photoelectric switch 301, and a light blocking sheet 302 is disposed on the first bearing seat 203 or the second bearing seat 204. When the light blocking sheet 302 passes through the photoelectric switch 301 once, a signal is output, and after the photoelectric switch 301 receives the signal, the signal is recorded and a corresponding signal is output, so that the motor 209 is controlled to change the rotation direction, and the deep hole plate 121 is driven to swing reciprocally, so as to generate high-frequency vibration.

Meanwhile, the setting position of the photoelectric switch 301 and/or the light blocking sheet 302 may be adjusted so that the first bearing seat 203 or the second bearing seat 204 or the like swings to different angles to be detected by the photoelectric switch 301, thereby controlling the motor 209 to change the rotation direction, and thus adjusting the swing angle (amplitude) of the mechanism.

In the present embodiment, the motor 209, the position sensor 300, the rotating bracket 208, and the like are provided on the base plate 400, and the vibration mechanism is integrally mounted through the base plate 400.

During the use, motor 209 drive eccentric wheel 201 is the turnover motion, eccentric connecting rod 202 that the eccentric wheel 201 is connected drives bearing 206 and slides in spout 205, and then drives sample carrier 100 reciprocal swing to this reaches vibrations effect, makes the solution accomplish the rapid mixing, and adopted photoelectric switch 301 to detect the signal that sample carrier 100 passed through, then according to signal control motor 209 forward and backward rotation, realized deep hole board 121 regular high frequency vibrations, improved solution mixing's homogeneity.

Referring to fig. 7 and 8 again, in the present embodiment, the carrier assembly 110 includes a fixed tray 111, a first bearing seat 203 is mounted on a lower surface of the fixed tray 111, and a second bearing seat 204, and an upper surface of the fixed tray 111 is used for placing the deep hole plate 121. Meanwhile, the fixed tray 111 is further provided with a jacking part for jacking the deep hole plate 121, and the deep hole plate 121 is tightly jacked and fixed through the jacking part, so that the deep hole plate 121 and the fixed tray 111 are stable, and the deep hole plate 121 cannot shake, fall off and the like in the high-frequency vibration process.

Specifically, the pressing portion includes a top plate 112, a pressing spring 113, and a pressing mounting plate 114. Wherein, the fixed tray 111 is provided with a jacking installation groove 115, and the lower part of the top plate 112 is movably arranged in the jacking installation groove 115. Meanwhile, bolt holes 116 are formed in the jacking mounting plate 114, bolt holes are formed in the positions of the jacking mounting grooves 115 in the fixing tray 111, and the jacking mounting plate 114 is fixedly connected with the fixing tray 111 through bolts. The pressing spring 113 is disposed between the top plate 112 and the pressing mounting plate 114, and applies an elastic force to the top plate 112 to press the deep hole plate 121 inward against the top plate 112.

It should be noted that, based on the fact that the deep hole plate 121 is generally rectangular, the fixed tray 111 also adopts a rectangular form, and the pressing portion is provided with a plurality of pressing portions and is mounted at each side position of the rectangular shape of the fixed tray 111, and inward pressing force is applied to each side surface of the deep hole plate 121, so that the deep hole plate 121 is tightly and firmly pressed on the whole, and is firmly connected with the fixed tray 111, so that shaking and falling off in the high-frequency vibration process are avoided.

Referring to fig. 9 again, an inverted slope 117 is formed at an upper portion of the top plate 112, and the arrangement of the inverted slope 117 makes the deep hole plate 121 more convenient in the process of being mounted with the fixed tray 111. The reverse inclined plane 117 is inclined outwards from bottom to top, so that when the deep hole plate 121 is put down, the side surface of the deep hole plate 121 is firstly contacted with the reverse inclined plane 117, the top plate 112 is extruded outwards under the action of the reverse inclined plane 117, the top pressure spring 113 is overcome to apply work, all the top plates 112 are opened, and the deep hole plate 121 is conveniently placed further until the lower surface of the deep hole plate 121 is contacted with the upper surface of the fixed tray 111. At this time, the side surface of the deep hole plate 121 has been moved from the inverted slope 117 of the top plate 112 to contact with the vertical surface, and the top plate 112 is pressed against the side surface of the deep hole plate 121 by the pressing spring 113.

It should be noted that, in order to make the whole compact, the moving range of the top plate 112 is not set to be large, and based on the arrangement of the top spring 113 between the top plate 112 and the top mounting plate 114, in order to ensure a sufficient arrangement size of the top spring 113, in this embodiment, a spring hole with a certain depth is formed in the lower portion of the top plate 112, and a sliding block may be disposed in the lower portion of the top plate 112, and the spring hole is formed in the sliding block, so that one end of the top spring 113 is in contact with the bottom surface of the spring hole, and the other end is in contact with the top mounting plate 114, so as to continuously apply an inward elastic force to the top plate 112.

In this embodiment, the top pressure mounting plate 114 and the fixed tray 111 are detachably connected by bolts, so that the top plate 112, the top pressure mounting plate 114 and the like can be conveniently mounted.

In addition, the fixed tray 111 is further provided with a heating component for heating the solution in the deep-hole plate 121 during the movement process, so as to further improve the mixing efficiency, meet the heating requirements of different samples, and the like. In this embodiment, the heating component is a graphene electrothermal film, a ceramic heating plate, a resistance wire, or the like located inside the fixed tray 111.

By the foregoing, based on the deep hole plate 121 being very convenient for the taking and placing of the fixed tray 111, and the vibration mechanism can also synchronously complete the heating of the sample solution, therefore, the vibration mechanism provided in this embodiment is suitable for being installed on the whole assembly line for sample detection to perform online operation, the deep hole plate 121 with the heated solution to be mixed is placed on the fixed tray 111 by a manipulator or the like, the deep hole plate 121 is automatically pressed and fixed by the pressing part on the fixed tray 111, and the feeding detection sensor or the like can be set to confirm the feeding condition of the deep hole plate 121 on the fixed tray 111, and the feedback control motor 209 drives the sample carrier 100 to perform high-frequency vibration and heating of the heating component. After a preset period of time passes and the solutions in the deep-hole plates 121 are uniformly mixed, the motor 209 can be controlled to stop at an initial angle position, the deep-hole plates 121 after internal solution mixing are taken away by the manipulator and enter the next station, and the deep-hole plates 121 can be smoothly taken down when a larger upward force is applied to the deep-hole plates 121 based on the structure of the top pressing part.

In a word, adopt the vibration mechanism that this embodiment provided, through setting up of motor 209, eccentric wheel 201 etc. it is reciprocal wobbling to drive sample carrier 100, make solution high frequency vibrations accomplish the quick mix, and adopted photoelectric switch 301 to detect the signal that sample carrier 100 passed, then according to signal control motor 209 positive and negative rotation, and then realized deep hole plate 121 regular high frequency vibrations, improve the homogeneity of mixing, in addition the setting of roof pressure portion and heating element has further guaranteed the firm and solution heating mixing of sample carrier 100, be applicable to pipelined online operation.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims (9)

1. A vibrating mechanism, characterized by comprising a sample carrier (100), a rotary driving part, an eccentric wheel (201), a connecting rod (202), a first swinging connecting part and a second swinging connecting part;

the sample carrier (100) is for loading a solution;

the first swing connecting part and the second swing connecting part are connected with the sample carrier (100), and swing around the same swing axis;

the eccentric wheel (201) is in transmission connection with the rotary driving part, the connecting rod (202) is connected with the eccentric wheel (201), and is eccentrically arranged relative to the rotation center of the eccentric wheel (201), the first swing connecting part is provided with a sliding groove (205), a sliding connecting piece is arranged in the sliding groove (205) in a sliding mode, the sliding connecting piece is connected with the connecting rod (202), and the distribution direction of the sliding groove (205) is tangential to the swing radial direction of the first swing connecting part.

2. The vibration mechanism according to claim 1, wherein the first swing connection is a first bearing housing (203) and the second swing connection is a second bearing housing (204); the sliding connection is a bearing (206).

3. The vibration mechanism according to claim 2, wherein the second bearing seat (204) is provided with a connecting hole, a connecting screw (207) is provided through the connecting hole, and the connecting screw (207) is fixed at the position of the swinging shaft.

4. The vibration mechanism of claim 1, wherein the driving means of the rotary driving part includes a continuous rotary output and a normal and reverse periodic rotary output.

5. A vibrating mechanism according to claim 1, further comprising a position sensor (300) for sensing the oscillation of the sample carrier (100).

6. The vibration mechanism according to claim 5, characterized in that the position sensor (300) comprises a photo switch (301) and a light barrier (302), the photo switch (301) being fixedly arranged, the light barrier (302) swinging with the sample carrier (100).

7. A vibrating mechanism according to claim 1, wherein the sample carrier (100) comprises a deep well plate (121) and a fixed tray (111);

the fixing tray (111) is provided with a top plate (112), a top pressure mounting groove (115), a top pressure mounting plate (114) and a top pressure spring (113), the top plate (112) is movably connected with the top pressure mounting groove (115), the top pressure mounting plate (114) is detachably connected with the fixing tray (111), the top pressure spring (113) is arranged between the top plate (112) and the top pressure mounting plate (114), and the top plate (112) is in contact with the side surface of the deep hole plate (121).

8. A vibrating mechanism according to claim 7, characterized in that the top plate (112) is formed with an inverted bevel (117), the inverted bevel (117) being used for guiding the mounting of the deep hole plate (121).

9. A vibrating mechanism according to claim 7, wherein a heating assembly is further provided within the stationary tray (111), the heating assembly being adapted to heat the solution.