Linear oscillation device and sample analyzer using same

Abstract

The utility model provides a linear oscillation device and a sample analyzer applying the same, the linear oscillation device comprises an oscillation mixing unit, the oscillation mixing unit comprises a reset piece, an oscillation mixing guide rail seat arranged along a second direction, and an oscillation mixing seat arranged on the oscillation mixing guide rail seat; the driving assembly comprises a waveform driving piece and a driving mechanism for driving the waveform driving piece to move along a first direction, the waveform driving piece comprises a plurality of convex parts and concave parts which are alternately connected, and the oscillation mixing seat can be alternately propped against the convex parts and the concave parts and is pushed to move along the oscillation mixing guide rail seat; the reset piece forces the oscillation mixing seat to move towards the waveform driving piece; and the brake assembly comprises a brake part and a brake driving mechanism for driving the brake part to move in the first direction, and the brake part can abut against the oscillation blending seat. According to the utility model, the oscillation condition of each kit can be independently controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a linear oscillation device and a sample analyzer using the same. Background Art

[0002] Nowadays, many diseases are diagnosed by in vitro immunodiagnosis, which usually uses a sample analyzer to transfer samples, add reagents, react samples, and test samples. In order to improve the operation efficiency, the existing sample analyzer uses an automated method to transfer samples and add reagents. In the process of sample testing, it is usually necessary to mix the samples, so the sample analyzer needs to be equipped with an oscillating device.

[0003] Common oscillation mixing devices use a variety of oscillation mixing methods, such as eccentric oscillation mixing, autorotational mixing, periodic motion oscillation mixing in two perpendicular directions on a plane, and linear mixing.

[0004] An existing disc-type oscillator is provided with a shell, a fixed block is fixedly connected to the upper end of the shell, a groove is provided on the fixed block, a continuous concave-convex guide surface is provided on the edge of the groove, a turntable is provided inside the groove, a plurality of guide grooves evenly distributed around the circumference are provided on the turntable, the central axis of the guide grooves converges at the center of the turntable, a slider is slidably connected in each guide groove, a first spring is fixedly connected between the slider and the guide groove, an adjustable positioning seat is provided inside the shell, a drive shaft is rotatably connected to the positioning seat, the drive shaft is fixedly connected to the turntable, a drive structure that can drive the drive shaft is fixedly connected to the positioning seat, and each slider is provided with a placement rack. This disc-type oscillator is suitable for simultaneous oscillation and mixing of large batches of samples, but has obvious disadvantages.

[0005] First, the above-mentioned oscillator needs to occupy a large space and is not suitable for use by institutions with a small amount of samples. If the above-mentioned oscillator is set in a sample analyzer, the volume of the sample analyzer will be very large. Secondly, different samples need to perform operations such as adding liquid and discarding liquid for many times during the test process. The oscillation and stop operations of the above-mentioned oscillator are performed simultaneously for all samples, that is, all samples need to oscillate or stop oscillating synchronously, which leads to the inability to reasonably set the oscillation time according to the actual situation of different samples. For example, some samples need to be oscillated for a period of time and then need to be added liquid. Then, a separate stop operation cannot be performed for a certain sample. It is necessary to wait until all samples stop oscillating before adding liquid, resulting in low sample detection efficiency. Finally, since the mixing operation cannot be performed immediately after adding liquid, this is not conducive to the immediate reaction and affects the accuracy of the test results. Therefore, it is necessary to develop an oscillation device that is suitable for a small number of samples, occupies less space, and can flexibly control the oscillation and stop of a single sample. Summary of the invention

[0006] The first purpose of the utility model is to provide a linear oscillation device for a sample analyzer which is suitable for a small number of samples, occupies less space and can flexibly control the oscillation of a single sample.

[0007] The second object of the utility model is to provide a sample analyzer using the linear oscillation device.

[0008] To achieve the first purpose of the utility model, the linear oscillation device provided by the utility model for use in a sample analyzer includes an oscillation mixing unit, which includes a reset member, an oscillation mixing guide rail seat, and an oscillation mixing seat arranged on the oscillation mixing guide rail seat and capable of reciprocating along a second direction; a driving component, including a waveform driving member and a driving mechanism for driving the waveform driving member to reciprocate along a first direction, the waveform driving member includes a plurality of alternately connected protrusions and recesses, the oscillation mixing seat can alternately abut against the protrusions and recesses, and push the oscillation mixing seat to move along the oscillation mixing guide rail seat; the reset member forces the oscillation mixing seat to move toward the waveform driving member; a braking component, including a braking member and a braking driving mechanism for driving the braking member to move along the first direction, the braking member can abut against the oscillation mixing seat, and push the oscillation mixing seat to move in a direction away from the waveform driving member to release the abutment state between the oscillation mixing seat and the waveform driving member; the first direction and the second direction are not parallel.

[0009] It can be seen from the above scheme that under the joint action of the reset member and the waveform driving member of the linear oscillation device, the oscillation mixing seat can be reciprocated on the oscillation mixing guide seat. When the reagent kit is installed on the oscillation mixing seat, the reagent kit also reciprocates with the oscillation mixing seat, so that the reactants in the reaction cup on the reagent kit can be fully mixed. In addition, a brake component is provided on the linear oscillation device, and the brake component is abutted against one of the multiple oscillation mixing units, so that a gap is formed between the abutted oscillation mixing seat and the driving member, so that the driving member cannot drive the oscillation mixing seat to move, that is, the sample in the reagent kit on the oscillation mixing seat will not be mixed, so that each sample can be controlled separately without affecting the normal progress of other sample reactions.

[0010] The force of the reset member forcing the oscillating and mixing seat to move toward the waveform driving member can be elastic force or pulling force, preferably elastic force.

[0011] A preferred solution is that the oscillation and mixing seat is provided with a guide hole, the oscillation and mixing guide seat is provided with a limit piece, the reset piece is an elastic piece, the elastic piece is installed in the guide hole, and the first end of the elastic piece abuts against the inner wall of the guide hole, and the second end of the elastic piece abuts against the limit piece.

[0012] It can be seen that the oscillating and mixing seat is reset by a reset member such as a spring, and the oscillating and mixing seat can reciprocate on the oscillating and mixing guide seat to achieve mixing of the sample.

[0013] A further solution is that the oscillation and mixing seat is provided with a slide groove, and the oscillation and mixing guide rail seat is provided with a slider corresponding to the slide groove; or, the oscillation and mixing seat is provided with a slider, and the oscillation and mixing guide rail seat is provided with a slide groove corresponding to the slide groove; wherein the oscillation and mixing seat is slidably connected to the oscillation and mixing guide rail seat.

[0014] It can be seen that the sliding limit of the oscillating and mixing seat and the oscillating and mixing guide seat is achieved by means of the sliding groove and the sliding block, ensuring that the oscillating and mixing seat can only reciprocate along the second direction.

[0015] A further solution is that a roller is provided at one end of the oscillating and mixing seat close to the waveform driving member, and the waveform driving member abuts against the roller to drive the oscillating and mixing seat to move along the second direction.

[0016] It can be seen that through the contact between the roller and the driving member, the friction force on the driving wheel is smaller, so that the reciprocating motion of the driving member is smoother, avoiding the driving member from being easily damaged due to excessive friction after long-term use.

[0017] A further solution is that the oscillating and mixing seat is provided with a sample mounting portion, so that the reagent box or the test tube rack etc. can be mounted in the oscillating and mixing seat through the sample mounting portion and reciprocate with the oscillating and mixing seat.

[0018] A further solution is that the driving mechanism includes a mounting plate, a slide rail arranged on the mounting plate and extending along a first direction, a driving motor, a first connecting rod and a second connecting rod, and the waveform driving member is connected to the slide rail; the driving motor drives the first connecting rod to rotate along its first end as the axis; the second end of the first connecting rod is hinged to the first end of the second connecting rod, driving the second connecting rod to rotate, and the second end of the second connecting rod is hinged to the waveform driving member, driving the waveform driving member to slide back and forth along the slide rail.

[0019] It can be seen that the drive between the drive motor and the waveform drive member is realized by the connecting rod mechanism composed of the first connecting rod and the second connecting rod, so that the drive structure of the waveform drive member is simple and the reliability is high.

[0020] A further solution is that the brake member includes a support plate and an abutment wheel installed on the support plate, and the abutment wheel can abut against the oscillation mixing seat to push the oscillation mixing seat to move away from the waveform driving member to release the abutment state between the oscillation mixing seat and the waveform driving member.

[0021] It can be seen that the abutment wheel abuts against the oscillating and mixing seat, so that the contact between the brake member and the oscillating and mixing seat is smooth, thereby preventing the reaction liquid on the reagent kit from spilling.

[0022] A further solution is that the linear oscillation device includes a plurality of oscillation mixing units arranged along a first direction, and the driving component simultaneously drives the oscillation mixing seats in the plurality of oscillation mixing units to reciprocate along the oscillation mixing guide seat; the braking component can reciprocate along the first direction to push any oscillation mixing seat in a relative position to release the abutment state between the oscillation mixing seat in the relative position and the waveform driving member.

[0023] It can be seen that since the multiple oscillation and mixing units are arranged in parallel and compactly, the waveform driving member abuts against multiple oscillation and mixing seats at the same time. Therefore, the multiple oscillation and mixing seats can be driven to move by the reciprocating motion of the waveform driving member along the first direction. The entire linear oscillation device occupies a small volume, which is suitable for oscillating and mixing a small amount of samples, and is also beneficial to reducing the volume of the sample analyzer.

[0024] A further solution is that the braking assembly also includes a support frame, a code disc arranged on the support frame, and a braking drive mechanism is arranged on the support frame; the code disc extends along a first direction, and a plurality of light-through grooves are respectively provided on the code disc corresponding to a plurality of oscillation and mixing units; a photoelectric sensor arranged opposite to the abutment wheel is provided on the braking member, and the photoelectric sensor is inductively connected to the code disc, and when the photoelectric sensor moves to any light-through groove, the braking assembly pushes the oscillation and mixing seat in the corresponding position to release the abutment state between the oscillation and mixing seat in the corresponding position and the waveform driving member.

[0025] It can be seen that the positioning of the brake assembly and the oscillation mixing seat is achieved through the cooperation of the photoelectric sensor and the code disk, so that the brake assembly can be accurately moved to the corresponding position of the oscillation mixing seat.

[0026] In order to achieve the second objective of the present invention, the present invention provides a sample analyzer, which is provided with the above-mentioned linear oscillation device and a control device for controlling the linear oscillation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the linear oscillation device embodiment of the sample analyzer of the utility model after the brake component is hidden.

[0028] Figure 2 It is a structural diagram of an oscillation and mixing unit in an embodiment of a linear oscillation device of a sample analyzer of the utility model.

[0029] Figure 3 It is a structural exploded view of the oscillation and mixing unit in the embodiment of the linear oscillation device of the sample analyzer of the utility model.

[0030] Figure 4 It is a cross-sectional view of an oscillation and mixing unit in an embodiment of a linear oscillation device of a sample analyzer of the utility model.

[0031] Figure 5It is a top view of an embodiment of the linear oscillation device of the sample analyzer of the utility model.

[0032] Figure 6 It is a structural diagram of a driving component in an embodiment of a linear oscillation device of a sample analyzer of the utility model.

[0033] Figure 7 It is a structural exploded view of a driving component in an embodiment of a linear oscillation device of a sample analyzer of the utility model.

[0034] Figure 8 It is a cross-sectional view of an embodiment of the linear oscillation device of the sample analyzer of the utility model.

[0035] Fig. 9 yes Figure 8 Enlarged view of center C.

[0036] Fig.10 It is a structural diagram of the first viewing angle of the brake assembly in the linear oscillation device embodiment of the sample analyzer of the utility model.

[0037] Fig.11 It is a structural diagram of the braking component from a second viewing angle in the linear oscillation device embodiment of the sample analyzer of the utility model.

[0038] Fig.12 It is a structural diagram of a brake assembly of a linear oscillation device embodiment of a sample analyzer of the utility model in a first state.

[0039] Fig.13 It is a structural diagram of the brake assembly of the linear oscillation device embodiment of the sample analyzer of the utility model in the second state.

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Figure Number:

[0042] 100, reagent box; 110, box body; 111, clamping member; 112, reagent placement position; 121, first buckle member; 122, second buckle member; 150, reaction cup; 151, pipette head; 200, oscillation mixing unit; 210, oscillation mixing seat; 211, slide groove; 212, guide surface; 213, stabilizing surface; 214, guide hole; 217, protrusion; 219, mounting protrusion; 220, oscillation mixing guide seat; 221, slider; 222, stopper; 225, guide groove; 230, spring; 240, roller; 250, first mounting member; 280, sample mounting part; 300, drive assembly; 310, drive motor; 320 driving wheel; 330, synchronous belt; 340, driven wheel; 34 1. Bracket; 342. Second mounting member; 343. Rotating shaft; 350. First connecting rod; 351. Pin; 360. Second connecting rod; 361. Connecting member; 370. Driving member; 371. Connecting plate; 372. Slide groove; 373. Driving surface; 374. Protrusion; 375. Recess; 380. Slide rail; 381. Mounting plate; 400. Braking assembly; 410. Abutting wheel; 420. Braking member; 421. Support plate; 430. Motor; 431. Synchronous wheel; 432. Synchronous belt; 433. Code disk; 434. Photoelectric sensor; 435. Synchronous belt pressure plate; 436. Synchronous belt fixing plate; 437. Light-through groove; 440. Support frame; 441. Linear guide; 500. Base; 520. Support plate. DETAILED DESCRIPTION

[0043] The linear oscillation device of the utility model is applied to a sample analyzer, which may include a sample placement unit, a linear oscillation device, a liquid transfer device, a static device, a gripper device, a reading device, etc., wherein the linear oscillation device is used to mix the sample so that the sample and the added reagent are fully mixed to improve the accuracy of the detection. Preferably, the linear oscillation device is arranged on one side of the sample placement unit, and the sample to be detected is placed on the reagent box of the linear oscillation device through the gripper device.

[0044] See also Figure 1 and Figure 2 The linear oscillation device of this embodiment includes a base 500, and the base 500 includes a mounting plate 381. Two support plates 520 are arranged below the mounting plate 381, and the support plates 520 support the mounting plate 381. A plurality of oscillation and mixing units 200 are arranged on the mounting plate 381, and the plurality of oscillation and mixing units 200 are arranged parallel to each other and in a first direction. The first direction is Figure 1 The direction indicated by the arrow x is also the length direction of the mounting plate 381. The linear oscillation device is further provided with a driving assembly 300, which can drive the oscillation and mixing seat 210 in the oscillation and mixing unit 200 to move.

[0045] See also Figure 2 and Figure 3 , an oscillating and mixing unit 200 has an oscillating and mixing seat 210 and an oscillating and mixing guide rail seat 220, wherein the oscillating and mixing guide rail seat 220 is fixed on the mounting plate 381, and the oscillating and mixing guide rail seat 220 cannot move relative to the mounting plate 381. A hollow guide groove 225 is formed in the oscillating and mixing guide rail seat 220, and the upper end of the guide groove 225 is open, and the oscillating and mixing seat 210 is installed in the guide groove 225. Figure 3 It can be seen that the guide groove 225 extends along the second direction y, and preferably, the second direction y is perpendicular to the first direction x. Of course, in other embodiments, the first direction x and the second direction y are not necessarily perpendicular, as long as the first direction x and the second direction y are not parallel to each other, that is, the first direction x intersects with the second direction y.

[0046] The oscillation and mixing guide rail seat 220 may also be slidably connected to the oscillation and mixing seat 210 by means of a guide rail disposed on the surface, so that the oscillation and mixing seat 210 can slide relatively along the oscillation and mixing guide rail seat 220 .

[0047] Furthermore, a sample mounting portion 280 is provided in the oscillating and mixing seat 210, and the sample mounting portion 280 may be a test tube rack mounting position or a reagent kit mounting position. The test tube rack or the reagent kit 100 has a connecting component corresponding to the sample mounting portion 280, so that it is fixedly mounted on the oscillating and mixing seat 210, so that the test tube rack or the reagent kit 100 can move with the movement of the oscillating and mixing seat 210. Specifically, as Figure 4 As shown, the first end of the lower part of the reagent box 100 is provided with a first fastening member 121, and the second end is provided with a second fastening member 122. The first fastening member 121 is fastened to the first mounting groove of the inner wall of the oscillating and mixing seat 210, and the mounting protrusion 219 of the second fastening member 122 is fastened to the second mounting groove of the oscillating and mixing seat 210, so that the reagent box 100 is fixed on the oscillating and mixing seat 210 to prevent the reagent box 100 from falling from the oscillating and mixing seat 210 during the reciprocating motion of the oscillating and mixing seat 210. Preferably, the reagent box 100 has a box body 110, and one end of the box body 110 is provided with a clamping member 111 for clamping the reaction cup 150. In addition, the reagent box 100 is also provided with a plurality of reagent placement positions 112 and liquid pipetting head placement positions, the reagent placement position 112 is used to directly or indirectly store reagents, and the liquid pipetting head 151 can be placed on the liquid pipetting head placement position of the reagent box 100.

[0048] like Figure 3As shown, a plurality of sliders 221 are provided on the side walls of the guide groove 225 of the oscillating and mixing guide rail seat 220, and a plurality of slide grooves 211 are correspondingly provided on both sides of the bottom of the oscillating and mixing seat 210, and one slider 221 matches one slide groove 211, for example, the slide groove 211 can be fitted onto the slider 221, and the slide groove 211 can move relative to the slider 221. The provision of the slide groove 211 and the slider 221 enables the oscillating and mixing seat 210 to be stably slidably connected with the oscillating and mixing guide rail seat 220, and prevents the oscillating and mixing seat 210 from being separated from the oscillating and mixing guide rail seat 220.

[0049] As another implementation, a slide groove may be provided on the oscillating and mixing guide rail seat 220 , and a corresponding slider may be provided on the oscillating and mixing guide rail seat 220 .

[0050] Combination Figure 4 The bottom of the oscillating and mixing seat 210 is also provided with a guide hole 214. After the oscillating and mixing seat 210 and the oscillating and mixing guide rail seat 220 are installed, the guide hole 214 extending downward is located in the guide groove 225. A limit member 222 is provided on the oscillating and mixing guide rail seat 220, and the limit member 222 is arranged opposite to the guide hole 214. A spring 230 as a reset member is provided at the lower end of the oscillating and mixing seat 210. The spring 230 is an elastic member of this embodiment, which is installed in the guide hole 214, and the first end of the spring 230 abuts against the inner wall of the guide hole 214, and the other end abuts against the limit member 222. In this way, when the external force exerted by the driving member 370 on the oscillating and mixing seat 210 along the second direction y increases, the spring 230 can be compressed, and the oscillating and mixing seat 210 moves along the second direction y; when the external force exerted by the driving member 370 on the oscillating and mixing seat 210 decreases, the spring 230 returns to its initial state under the action of the elastic restoring force, thereby driving the oscillating and mixing seat 210 to slide along the second direction y to the initial position, thereby realizing the reciprocating motion of the oscillating and mixing seat 210 along the second direction.

[0051] As another embodiment, the reset member can also be a tension spring, such as: one end of the tension spring is fixed and connected to one end of the inner wall of the oscillation and mixing guide seat 220 close to the driving member 370, and a corresponding positioning member is provided at the bottom of the oscillation and mixing seat 210, and the other end of the tension spring is connected to the positioning member; in this way, when the oscillation and mixing seat 210 is subjected to an increased external force along the second direction y by the driving member 370 and causes it to move along the second direction y, the reset member is stretched, and when the external force acting on the oscillation and mixing seat 210 by the driving member 370 is reduced, the reset member returns to its initial state under the action of the elastic restoring force.

[0052] Further, a protrusion 217 is provided at one end of the oscillating and mixing seat 210 close to the driving assembly 300, and a through hole is provided on the protrusion 217. The roller 240 is installed below the through hole through the first mounting member 250, so that the roller 240 is installed on the protrusion 217. The protrusion 217 is used to abut against the corrugated driving member 370 of the driving assembly 300.

[0053] See also Figures 5 to 7 The driving assembly 300 has a driving motor 310 and is provided with a wave-shaped driving member 370, which includes a plurality of alternately connected convex portions 374 and concave portions 375. In this embodiment, the wave-shaped driving member 370 is driven by a driving mechanism to reciprocate along a first direction x, and the driving mechanism includes a driving motor 310. The driving motor 310 drives the wave-shaped driving member 370 to reciprocate along the first direction x through a transmission mechanism and a connecting rod mechanism. When the wave-shaped driving member 370 reciprocates along the first direction x, it can drive a plurality of oscillating and mixing seats 210 to move along a second direction y.

[0054] In this embodiment, the driving motor 310 drives the connecting rod mechanism to move through the transmission mechanism. Therefore, the driving mechanism of this embodiment also includes the transmission mechanism and the connecting rod mechanism. Specifically, the transmission mechanism includes a driving wheel 320, a synchronous belt 330 and a driven wheel 340. The driving wheel 310 is mounted on the output shaft of the driving motor 310, and the driving motor 310 drives the driving wheel 320 to rotate. The synchronous belt 330 is mounted on the driving wheel 320 and the driven wheel 340, so that when the driving wheel 320 rotates, the driven wheel 340 is driven to rotate synchronously. The driven wheel 340 is installed on the bracket 341 through two second mounting members 342, and the driving motor 310 and the connecting rod mechanism are fixed below the mounting plate 381 through the bracket 341. The driven wheel 340 is provided with a rotating shaft 343, and the rotating shaft 343 drives the connecting rod mechanism to move.

[0055] The connecting rod mechanism includes a first connecting rod 350 and a second connecting rod 360. The transmission mechanism drives the first connecting rod 350 to rotate. For example, the rotating shaft 343 of the driven wheel 340 passes through the shaft hole of the first end of the first connecting rod 350 and is fixedly connected to the first end of the first connecting rod 350. When the driven wheel 350 rotates, the second end of the first connecting rod 350 rotates around the axis of the rotating shaft 343. The first end of the second connecting rod 360 is hinged to the first connecting rod 350, and the second end of the second connecting rod 360 is hinged to the wave-shaped driving member 370. Figure 7 It can be seen that the pin shaft 351 passes through the axial hole at the second end of the first connecting rod 350, and the pin shaft 351 also passes through the axial hole at the first end of the second connecting rod 360. A connecting member 361 is installed on the axial hole at the second end of the second connecting rod 360. The connecting member 361 is fixedly connected to the connecting plate 371 located on the mounting plate 381 through the avoidance hole of the mounting plate 381.

[0056] The wave-shaped driving member 370 is in a relative position to the roller 240, and the wave-shaped driving member 370 is fixedly connected to the connecting plate 371 by screws or rivets. Furthermore, in order to limit the movement direction of the wave-shaped driving member 370, two slide rails 380 are arranged on the mounting plate 381. The two slide rails 380 extend along the first direction x, and the two slide rails 380 are on the same straight line. Accordingly, two slide grooves 372 are arranged under the connecting plate 371, and each slide groove 372 is buckled on a slide rail 380.

[0057] Since the connecting plate 371 is fixed to the wave-shaped driving member 370, the sliding groove 372 is also fixed to the wave-shaped driving member 370. When the second connecting rod 360 rotates, the connecting plate 371 is driven to move through the connecting member 361. Since the slide rail 380 extends along the first direction x and the sliding groove 372 is buckled on the slide rail 380, the sliding groove 372 can only slide along the first direction x, so that the wave-shaped driving member 370 can only slide along the first direction x, thereby limiting the sliding direction of the wave-shaped driving member 370.

[0058] See also Figure 5 and Figure 6 The side of the waveform driving member 370 facing the oscillating mixing unit 200 is a driving surface 373. Along the first direction x, the driving surface 373 includes a plurality of convex portions 374 and concave portions 375 that are alternately connected. Figure 5 It can be seen that a concave-convex section includes a peak point B and a valley point A; the peak point B is at the top of the convex part 374, and the valley point A is at the lowest point of the concave part 375. Preferably, two adjacent oscillating and mixing seats 210 abut against the peak point B and the valley point A of a concave-convex section, that is, in the first direction x, the distance between the peak point B and the valley point A is L, which is also the spacing distance between the central axes of the two adjacent oscillating and mixing seats 210. Further preferably, the stroke of the single movement of the waveform driving member 370 along the first direction x is also L, that is, the single stroke of the waveform driving member 370 moving along the first direction is equal to the distance L between the peak point B and the valley point A of a concave-convex section, which can reduce the overall volume. That is, the waveform driving member 370 moves in the opposite direction immediately after each movement of the distance L. At this time, along the second direction y, the distance between the peak point B and the valley point A is h, which is also the moving distance of the oscillating and mixing seat 210 in a single movement along the second direction y.

[0059] In this embodiment, the arm length of the first connecting rod 350 is r. When the shaft of the driving motor 310 rotates one circle, the waveform driving member 370 will complete a linear reciprocating motion. Therefore, the arm length r of the first connecting rod 350 should be half of the stroke L of a single motion of the waveform driving member 370 along the first direction x, that is, 2r=L.

[0060] It can be seen that in the initial state, the rollers 240 and 370 of the multiple oscillating and mixing units 200 are in natural contact. When the waveform driving member 370 moves, the roller 240 rolls along the driving surface 373, and the oscillating and mixing seat 210 that has not reached the peak point B is subjected to the force applied by the waveform driving member 370 in the second direction y, and the spring 230 on the oscillating and mixing seat 210 is compressed. The force applied by the waveform driving member 370 in the second direction y to the oscillating and mixing seat 210 at the peak point B gradually weakens, and the spring 230 in the compressed state resets the oscillating and mixing seat 210. As the waveform driving member 370 reciprocates along the first direction x, the oscillating and mixing unit 200 alternately abuts against the peak point B and the valley point A, and the oscillating and mixing seat 210 reciprocates along the second direction y to achieve mixing of the samples in the reagent box. It can be seen that the oscillating and mixing seat 210 can alternately abut against the convex portion 374 and the concave portion 375, periodically pushing the oscillating and mixing seat 370 to move toward the spring 230 as a reset member, and the spring 230 forces the oscillating and mixing seat 210 to move toward the waveform driving member 370, thereby realizing the reciprocating motion of the oscillating and mixing seat 210. Furthermore, by setting a reasonable speed of the driving motor 310, the mixing operation requirements under different conditions can be met.

[0061] In order to achieve mixing control of a single oscillating mixing unit 200, a brake assembly 400 is provided in this embodiment. Figures 8 to 11 The brake assembly 400 is provided with a support frame 440, on which a linear guide rail 441 is provided, and the linear guide rail 441 extends along the first direction x. The brake assembly 400 is also provided with a motor 430, and the motor 430 is mounted on the support frame 440. The brake assembly 400 is also provided with a brake member 420, and the brake member 420 is located on the linear guide rail 441 and can slide on the linear guide rail 441 along the first direction x.

[0062] The support frame 440 is also provided with a brake driving mechanism for driving the brake member 420 to move along the first direction x. The brake driving mechanism includes a driving motor 430, a plurality of synchronous wheels 431 and a synchronous belt 432. The synchronous belt 432 is sleeved outside the plurality of synchronous wheels 431. The motor 430 drives the synchronous wheels 431 to rotate, thereby driving the synchronous belt 432 to rotate. A synchronous belt fixing plate 436 is provided at the lower end of the brake member 420. A synchronous belt pressing plate 435 is provided above the synchronous belt fixing plate 436. The synchronous belt 432 is clamped between the synchronous belt fixing plate 436 and the synchronous belt pressing plate 435, and the synchronous belt 432 is fixedly connected to the synchronous belt fixing plate 436. In this way, when the synchronous belt 432 moves, the synchronous belt fixing plate 436 also moves synchronously, thereby driving the brake member 420 to move in the first direction x.

[0063] Since the brake member 420 can be moved to positions corresponding to different oscillation and mixing units 200, in order to accurately control the position of the brake member 420, a code disk 433 is also provided on the support frame 440, and the code disk 433 extends along the first direction x. A plurality of light-through slots 437 corresponding to the oscillation and mixing units 200 are provided on the code disk 433, and each light-through slot 437 corresponds to the position where an oscillation and mixing unit 200 is located. In addition, a photoelectric sensor 434 is also provided on the brake member 420. When the brake member 420 moves to a position corresponding to a certain oscillation and mixing unit 200, the light beam emitted by the photoelectric sensor 434 can pass through the corresponding light-through slot 437, thereby indicating that the brake member 420 moves to the position corresponding to the specified oscillation and mixing unit 200.

[0064] The brake member 420 is provided with a support plate 421, and an abutment wheel 410 is mounted on the support plate 421. The abutment wheel 410 is located at the end of the support plate 421 to form an abutment portion. Preferably, the abutment wheel 410 is arranged opposite to the protrusion 217. Figure 3 The surface of the protrusion 217 of the oscillation and mixing seat 210 close to the brake assembly 400 constitutes the contact surface of the oscillation and mixing seat 210, and the contact surface includes two guide surfaces 212 and a stable surface 213. The two guide surfaces 212 are respectively located on both sides of the stable surface 213, and the angle between each guide surface 212 and the stable surface 213 is an obtuse angle. The abutment wheel 410 can abut on the abutment surface. Since the guide surface 212 and the stable surface 213 are provided, when the abutment wheel 410 abuts on the stable surface 213, the abutment wheel 410 can maintain contact with the stable surface 213. Before the abutment wheel 410 slides to the stable surface 213, it first contacts with the guide surface 212, so that the oscillation and mixing seat 210 can move smoothly during the sliding process of the abutment wheel 410 to prevent the sample from spilling. The brake member 420 pushes the oscillating and mixing seat 210 in the relative position through the abutting wheel 410 (the abutting wheel 410 abuts against the stabilizing surface 213), so that the oscillating and mixing seat 210 will not contact the waveform driving member 370. In other words, the brake member 420 can push the oscillating and mixing seat 210 to move away from the waveform driving member 370 to release the abutting state between the oscillating and mixing seat 210 and the waveform driving member 370.

[0065] It can be seen that in this embodiment, the photoelectric sensor 434 is arranged opposite to the abutment wheel 410, and the photoelectric sensor 434 is inductively connected to the code disk 433. When the photoelectric sensor 434 moves to a position corresponding to any light-through groove 437, the brake assembly 400 will push the oscillation mixing seat 210 at the corresponding position to release the abutment state between the oscillation mixing seat 210 at the corresponding position and the waveform driving member 370.

[0066] When seeing Fig. 9When the abutting wheel 410 of the brake assembly 400 abuts against the stable surface 213, the waveform driving member 370 cannot contact the oscillating and mixing seat 210. At this time, when the waveform driving member 370 reaches the peak point B of the corresponding oscillating and mixing unit 200, a gap is formed between the waveform driving member 370 and the roller 240 of the oscillating and mixing seat 210, and the length of the gap is W. At this time, the oscillating and mixing seat 210 abutted by the abutting wheel 410 will be separated from the drive of the waveform driving member 370, and the reciprocating motion of the waveform driving member 370 will not be able to drive the oscillating and mixing seat 210 to move along the second direction y, so that the reagent kit on the oscillating and mixing seat 210 cannot be mixed.

[0067] like Fig.13 As shown, when the brake member 420 abuts against the oscillating and mixing seat 210 at the end, the oscillating and mixing seat 210 will not be driven by the waveform driving member 370, but the waveform driving member 370 can still move along the first direction x under the drive of the driving motor 310, and can still drive other oscillating and mixing seats 210 to move along the second direction y. In this way, as long as the reagent kit 100 on the oscillating and mixing seat 210 abutted by the brake member 420 does not perform the mixing operation, the reagent kit 100 on the other oscillating and mixing seats 210 can still perform the mixing operation. In this way, the reagent kit 100 on any oscillating and mixing seat 210 can be independently controlled without affecting the operation of the reagent kit 100 on other oscillating and mixing seats 210.

[0068] Of course, if all reagent kits 100 in the oscillating and mixing seats 210 need to be mixed, the brake member 420 is moved outside the plurality of oscillating and mixing units 200, such as Fig.12 As shown, at this time, the brake member 420 is not in contact with any oscillation and mixing unit 200 .

[0069] Finally, it should be emphasized that the present invention is not limited to the above-mentioned embodiments. For example, changes in the resetting structure of the oscillating mixing seat, or changes in the shape of the driving surface of the driving member, etc., should also be included in the scope of protection of the claims of the present invention.

Claims

1. A linear oscillation device, characterized in that: include: The oscillation and mixing unit comprises a reset member, an oscillation and mixing guide rail seat, and an oscillation and mixing seat disposed on the oscillation and mixing guide rail seat and capable of reciprocating along a second direction; A driving assembly, comprising a waveform driving member and a driving mechanism for driving the waveform driving member to reciprocate along a first direction, wherein the waveform driving member comprises a plurality of alternately connected convex portions and concave portions, and the oscillating and mixing seat can alternately abut against the convex portions and the concave portions to push the oscillating and mixing seat to move along the oscillating and mixing guide rail seat; The reset member forces the oscillation and mixing seat to move toward the waveform driving member; a brake assembly, comprising a brake member and a brake driving mechanism for driving the brake member to move along the first direction, wherein the brake member can abut against the oscillating and mixing seat and push the oscillating and mixing seat to move in a direction away from the waveform driving member to release the abutment state between the oscillating and mixing seat and the waveform driving member; The first direction and the second direction are non-parallel.

2. The linear oscillation device according to claim 1, characterized in that: The oscillation and mixing seat is provided with a guide hole, and a limit piece is provided on the oscillation and mixing guide rail seat. The reset piece is an elastic piece, and the elastic piece is installed in the guide hole. The first end of the elastic piece abuts against the inner wall of the guide hole, and the second end of the elastic piece abuts against the limit piece.

3. The linear oscillation device according to claim 1, characterized in that: The oscillating and mixing seat is provided with a slide groove, and the oscillating and mixing guide rail seat is provided with a slider corresponding to the slide groove; or the oscillating and mixing seat is provided with a slider, and the oscillating and mixing guide rail seat is provided with a slide groove corresponding to the slide groove; The oscillation and mixing seat is slidably connected to the oscillation and mixing guide rail seat.

4. The linear oscillation device according to claim 1, characterized in that: A roller is disposed at one end of the oscillating and mixing seat close to the waveform driving member, and the waveform driving member abuts against the roller to drive the oscillating and mixing seat to move along the second direction.

5. The linear oscillation device according to claim 1, characterized in that: The oscillating and mixing seat is provided with a sample mounting portion.

6. The linear oscillation device according to claim 1, characterized in that: The driving mechanism comprises a mounting plate, a slide rail disposed on the mounting plate and extending along the first direction, a driving motor, a first connecting rod and a second connecting rod, and the wave-shaped driving member is connected to the slide rail; The driving motor drives the first connecting rod to rotate along the first end thereof as the axis; The second end of the first connecting rod is hinged to the first end of the second connecting rod to drive the second connecting rod to rotate, and the second end of the second connecting rod is hinged to the wave-shaped driving member to drive the wave-shaped driving member to slide back and forth along the slide rail.

7. The linear oscillation device according to claim 1, characterized in that: The brake member includes a support plate and an abutment wheel mounted on the support plate, wherein the abutment wheel can abut against the oscillation and mixing seat to push the oscillation and mixing seat to move away from the waveform driving member to release the abutment state between the oscillation and mixing seat and the waveform driving member.

8. The linear oscillation device according to any one of claims 1 to 7, characterized in that: The linear oscillation device comprises a plurality of oscillation and mixing units arranged along the first direction, and the driving component simultaneously drives the oscillation and mixing seats in the plurality of oscillation and mixing units to move along the oscillation and mixing guide rail seat; The brake assembly can reciprocate along the first direction to push any of the oscillating and mixing seats in the relative position to release the abutment state between the oscillating and mixing seats in the relative position and the waveform driving member.

9. The linear oscillation device according to claim 7, characterized in that: The brake assembly further comprises a support frame, a code disc arranged on the support frame, and the brake drive mechanism is arranged on the support frame; The code disk is provided with a plurality of light-transmitting slots corresponding to the plurality of oscillation and mixing units; The brake component is provided with a photoelectric sensor arranged opposite to the abutment wheel, and the photoelectric sensor is inductively connected to the code disk. When the photoelectric sensor moves to any of the light-through slots, the brake assembly pushes the oscillation mixing seat at the corresponding position to release the abutment state between the oscillation mixing seat at the corresponding position and the waveform driving component.

10. A sample analyzer, characterized in that: The invention comprises a linear oscillation device as claimed in any one of claims 1 to 9 and a control device for controlling the linear oscillation device.

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