Microplate reader for biological test

Abstract

The invention discloses a microplate reader for a biological test, and relates to the technical field of microplate readers, the microplate reader comprises a microplate reader body, a carrier plate frame and a porous plate, the carrier plate frame is provided with a placing groove, a gap exists between the porous plate and the inner wall of the placing groove, and a first elastic assembly is arranged in the carrier plate frame; the first elastic assembly comprises a first fixing piece, a first elastic bent piece and a limiting piece, the limiting piece is provided with a second elastic assembly, and the second elastic assembly comprises a second fixing piece, a second elastic bent piece and a pressing piece. The gap between the outer side wall of the perforated plate and the inner side wall of the containing groove is utilized for facilitating taking and placing of the perforated plate, the first elastic assembly is used for limiting the perforated plate in the horizontal direction, and the second elastic assembly is used for limiting the perforated plate in the vertical direction; the perforated plate can be smoothly taken and placed on the plate carrying frame, and meanwhile the placing stability of the perforated plate is improved.

Description

Technical Field

[0001] The present application relates to the technical field of microplate readers, and in particular to a microplate reader for biological experiments. Background Art

[0002] The microplate reader is a highly sensitive detection device commonly used in biological experiments. It is mainly used for quantitative analysis of biological molecules. The microplate reader measures the absorbance, fluorescence or luminescence signal of the sample at a specific wavelength and combines it with a multi-well plate to achieve high-throughput detection. It is widely used in ELISA, cell activity detection, drug screening, immunoassay and other fields.

[0003] Currently, when the ELISA instrument is in use, the plate carrier will slide out of the main body of the ELISA instrument, and a placement groove is formed on the top wall of the plate carrier. The multi-well plate is placed in the placement groove of the plate carrier, and then the plate carrier slides into the main body of the ELISA instrument for measurement and detection.

[0004] When the multi-well plate is placed in the placement slot of the plate carrier, if the gap reserved between the placement slot and the multi-well plate is small, the placement and removal of the multi-well plate may be hindered; if the gap reserved between the placement slot and the multi-well plate is large, the multi-well plate may slide horizontally in the placement slot during the movement of the plate carrier, or there may be slight vibrations during the detection of the ELISA instrument, which may also cause the multi-well plate to slide vertically in the placement slot. Summary of the invention

[0005] In order to facilitate smooth placement of a multi-well plate on a plate carrier and increase the stability of the placement of the multi-well plate, the present application provides an ELISA instrument for biological experiments.

[0006] The present application provides a microplate reader for biological testing using the following technical solution: A microplate reader for biological experiments comprises a microplate reader body, a plate carrier and a multi-well plate, wherein the plate carrier is slidably mounted in the side wall of the microplate reader body in a horizontal direction, a placement slot is provided on the top wall of the plate carrier, and the multi-well plate is placed in the placement slot, and a gap is formed between the outer wall of the multi-well plate and the inner wall of the plate carrier located in the placement slot, and at least one first elastic component is arranged on each inner wall of the placement slot of the plate carrier, the first elastic component comprises a first fixing piece, a first elastic bent piece and a limiting piece, the first fixing piece is fixedly arranged on the inner wall of the placement slot of the plate carrier, one end of the first elastic bent piece is fixedly connected to the end of the fixing piece, the end of the limiting piece is fixedly connected to the other end of the first elastic bent piece, the first elastic bent piece and the limiting piece are both located in the gap, and when the multi-well plate is placed in the placement slot, the outer wall of the multi-well plate pushes the limiting piece to move The cam is secured to the outer wall of the plate and is adapted to move toward the bottom of the support frame, the cam being secured to the outer wall of the plate and being adapted to move toward the bottom of the support frame.

[0007] By adopting the above technical solution, when the microplate reader is in use, the plate carrier slides out of the microplate reader body, and the porous plate is placed in the placement slot of the plate carrier. The gap between the outer wall of the porous plate and the inner wall of the placement slot facilitates the placement of the porous plate. During the placement of the porous plate, the bottom of the outer wall of the porous plate will first contact the limiting plate. As the porous plate continues to descend, the porous plate will push the limiting plate to move away from itself, and the limiting plate will drive the first elastic bending plate to bend. When the porous plate is placed, the first elastic bending plate drives the limiting plate to press against the outer wall of the porous plate through elastic force, thereby limiting the porous plate in the horizontal direction, so that the porous plate is not easy to slide in the horizontal direction during the movement of the plate carrier. When the porous plate pushes the limiting plate to move, the limiting plate will drive the second fixed plate to move toward the porous plate, and the second fixed plate drives the pressing plate to move through the second elastic curved plate. As the limiting plate continues to move, the pressing plate will move to contact the outer wall of the porous plate and drive the second elastic curved plate to bend. When the porous plate is placed, the end of the pressing plate enters the pressing groove, and the second elastic curved plate drives the pressing plate to press the porous plate through elastic force, thereby limiting the porous plate in the vertical direction, so that the porous plate is not easy to slide in the vertical direction during the detection of the microplate reader. With such a configuration, the gap is convenient for taking and placing the porous plate, the first elastic component limits the porous plate in the horizontal direction, and the second elastic component limits the porous plate in the vertical direction, which facilitates the smooth taking and placing of the porous plate on the plate carrier and increases the stability of the placement of the porous plate.

[0008] Preferably, a reinforcement plate is fixedly provided at the end of each of the limiting plates away from the first elastic bent plate, a plurality of elastic members are provided at the bottom of the peripheral side wall of the plate carrier located at the placement groove, the plurality of elastic members correspond one to one to the plurality of reinforcement plates, a push block is fixedly provided at the end of the elastic member, the push block is slidably provided in the placement groove of the plate carrier, when the porous plate is placed in the placement groove, the porous plate pushes the limiting plate to move, the limiting plate drives the reinforcement plate to move and abut against the push block, and the elastic member pushes the reinforcement plate to press against the porous plate through the push block.

[0009] By adopting the above technical solution, when the porous plate is placed in the placement groove, the porous plate will push the limiting plate to move, the limiting plate will drive the reinforcing plate to move, the reinforcing plate moves and abuts the push block, when the porous plate is placed, the porous plate pushes the push block to move through the reinforcing plate, the push block squeezes the elastic part, and the elastic force of the elastic part acts on the reinforcing plate through the push block, so that the reinforcing plate can be pressed against the porous plate, thereby further improving the limiting effect of the porous plate in the horizontal direction.

[0010] Preferably, each of the reinforcing plates is protruded on the side wall away from the push block to form a limiting portion, and a plurality of limiting grooves are provided at the bottom of the outer wall of the porous plate, and the plurality of limiting grooves correspond one-to-one to the plurality of limiting portions. The cross-section of the limiting groove is trapezoidal, and the limiting groove is expanded outwardly. When the elastic member pushes the reinforcing plate against the porous plate through the push block, the reinforcing plate pushes the limiting portion to be pressed against the limiting groove, and the outer wall of the limiting portion abuts against the lower inner wall of the limiting groove.

[0011] By adopting the above technical solution, when the elastic force of the elastic member acts on the reinforcing plate through the push block, the reinforcing plate drives the limiting part to press against the limiting groove, and the outer wall of the limiting part presses against the lower inner wall of the limiting groove with a trapezoidal cross-section, so that the limiting part can further limit the porous plate in the vertical direction through the limiting groove.

[0012] Preferably, a guide rod is fixedly provided on the middle part of the side wall of each push block away from the reinforcement plate, and a plurality of guide grooves are provided on the inner side wall of the plate carrier located in the placement groove, and the plurality of guide rods are slidably provided in the plurality of guide grooves along the sliding direction of the push block.

[0013] By adopting the above technical solution, when the reinforcement sheet pushes the push block to move, the push block drives the guide rod to slide in the guide groove of the plate carrier, and the guide rod and the guide groove cooperate to guide the movement of the push block, thereby making the sliding of the push block more stable.

[0014] Preferably, a third elastic bent piece is fixedly provided at the top of the pressing piece away from the second elastic bent piece, and a positioning piece is fixedly provided at the end of the third elastic bent piece away from the pressing piece. When the end of the pressing piece enters the pressing groove, the pressing piece drives the third elastic bent piece and the positioning piece into the pressing groove, and the third elastic bent piece drives the positioning piece to press against the inner wall of the pressing groove.

[0015] By adopting the above technical solution, when the limiting plate drives the second fixed plate to move toward the porous plate, the second fixed plate drives the pressing plate and the positioning plate to move through the second elastic bent plate. As the limiting plate continues to move, the positioning plate will first move to contact the outer wall of the porous plate and drive the third elastic bent plate to bend. When the end of the pressing plate enters the pressing groove, the pressing plate drives the third elastic bent plate and the positioning plate to enter the pressing groove, and the third elastic bent plate drives the positioning plate to press against the inner wall of the pressing groove, thereby further limiting the porous plate in the horizontal direction.

[0016] Preferably, the top of the outer side wall of the porous plate extends outward to form a flange.

[0017] By adopting the above technical solution, after the ELISA instrument completes the detection, the flange can facilitate the staff to take the multi-well plate out of the plate carrier.

[0018] Preferably, an anti-error block is fixedly provided at a corner of the porous plate, an anti-error groove is provided at a corner of the placement groove of the plate carrier, and the anti-error block is slidably provided in the anti-error groove.

[0019] By adopting the above technical solution, when the porous plate is placed, the porous plate will drive the anti-error block to enter the anti-error groove of the plate carrier, so that the porous plate will not be placed upside down.

[0020] Preferably, the angle between the limiting plate and the second fixing plate is between 90° and 105°.

[0021] By adopting the above technical solution, the angle between the limiting plate and the second fixing plate is between 90-105°, which makes it easy for the limiting plate to drive the second elastic component to move when it moves, so that the pressing plate can drive the second elastic bending plate to bend.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The gap between the outer wall of the porous plate and the inner wall of the placement groove is used to facilitate the placement of the porous plate. The first elastic component is used to limit the position of the porous plate in the horizontal direction, and the second elastic component is used to limit the position of the porous plate in the vertical direction, so as to facilitate the smooth placement of the porous plate on the plate carrier and increase the stability of the placement of the porous plate; 2. With the help of the reinforcing sheet, when the porous plate is placed in the placement slot, the porous plate will push the limiting sheet to move, the limiting sheet will drive the reinforcing sheet to move, the reinforcing sheet moves to abut against the push block, and when the porous plate is placed, the porous plate pushes the push block to move through the reinforcing sheet, the push block squeezes the elastic member, and the elastic force of the elastic member acts on the reinforcing sheet through the push block, so that the reinforcing sheet can be pressed against the porous plate, thereby further improving the limiting effect of the porous plate in the horizontal direction; 3. When the limiting plate drives the second fixing plate to move toward the porous plate through the positioning plate, the second fixing plate drives the pressing plate and the positioning plate to move through the second elastic bending plate. As the limiting plate continues to move, the positioning plate will first move to contact the outer wall of the porous plate and drive the third elastic bending plate to bend. When the end of the pressing plate enters the pressing groove, the pressing plate drives the third elastic bending plate and the positioning plate to enter the pressing groove, and the third elastic bending plate drives the positioning plate to press against the inner wall of the pressing groove, thereby further limiting the porous plate in the horizontal direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the microplate reader for biological testing in Example 1 of the present application; Figure 2 This is a schematic diagram of the overall structure of the microplate reader for biological testing in Example 1 of the present application, in order to highlight the slide-out state of the plate carrier; Figure 3A partial structural top view of the microplate reader for biological testing in Example 1 of the present application; Figure 4 For this application Figure 3 Explosion cross section in the AA direction; Figure 5 For this application Figure 4 The enlarged schematic diagram of point B in the middle; Figure 6 This is a partial structural cross-sectional view of Example 1 of the present application, which is used to highlight the state of the porous plate insertion process; Figure 7 This is a partial structural cross-sectional view of Example 1 of the present application, in order to highlight the state where the porous plate has been inserted; Figure 8 This is a partial structural cross-sectional view of Example 2 of the present application, in order to highlight the state where the porous plate has been inserted; Fig. 9 This is a partial structural cross-sectional view of Example 3 of the present application, which is used to highlight the state of the porous plate insertion process; Fig.10 This is a partial structural cross-sectional view of Example 3 of the present application, in order to highlight the state where the porous plate has been inserted; Fig.11 This is a partial structural cross-sectional view of Example 4 of the present application, in order to highlight the state where the porous plate has been inserted; Fig.12 This is a partial structural cross-sectional view of Example 5 of the present application, which highlights the completed insertion state of the porous plate.

[0024] Figure markings: 1. ELISA instrument body; 2. Plate carrier; 3. Multi-well plate; 4. Placement slot; 5. Gap; 6. First elastic component; 61. First fixed plate; 62. First elastic curved plate; 63. Limiting plate; 7. Second elastic component; 71. Second fixed plate; 72. Second elastic curved plate; 73. Pressing plate; 8. Pressing groove; 9. Reinforcing plate; 10. Elastic member; 11. Push block; 12. Limiting part; 13. Limiting groove; 14. Guide rod; 15. Guide groove; 16. Third elastic curved plate; 17. Positioning plate; 18. Flanging; 19. Anti-error block; 20. Anti-error groove; 21. Buckle groove; 22. Accommodating chamber; 23. Baffle; 24. First contact rod; 25. Second contact rod; 26. Chamfer. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-Figure 12 This application is described in further detail.

[0026] Embodiment 1: The embodiment of the present application discloses an ELISA instrument for biological experiments.

[0027] Reference Figure 1 and Figure 2A microplate reader for biological experiments includes a microplate reader body 1, a plate carrier 2 and a multi-well plate 3. A receiving cavity 22 is formed in the side wall of the microplate reader body 1. A baffle 23 is rotatably installed at the opening of the receiving cavity 22 of the microplate reader body 1. A torsion spring is installed at the rotating connection between the baffle 23 and the microplate reader body 1.

[0028] Reference Figure 2 , Figure 3 and Figure 4 The plate carrier 2 is slidably installed in the accommodating cavity 22 of the ELISA instrument body 1. A placement groove 4 is opened on the top wall of the plate carrier 2. The length and width of the placement groove 4 are greater than the length and width of the porous plate 3. The porous plate 3 is placed in the placement groove 4 of the plate carrier 2, and an annular gap 5 is formed between the outer peripheral side wall of the porous plate 3 and the inner peripheral side wall of the plate carrier 2 located in the placement groove 4.

[0029] When the plate carrier 2 slides out of the accommodating cavity 22 of the microplate reader body 1, the plate carrier 2 pushes the baffle 23 to rotate and open, and the porous plate 3 can be taken or placed at this time. The annular gap 5 formed between the outer peripheral side wall of the porous plate 3 and the inner peripheral side wall of the plate carrier 2 located in the placement groove 4 does not hinder the taking and placing of the porous plate 3, so that the taking and placing of the porous plate 3 is smoother. After the plate carrier 2 slides into the accommodating cavity 22 of the microplate reader body 1, the torsion spring drives the baffle 23 to rotate and close, and the baffle 23 blocks the opening of the accommodating cavity 22.

[0030] Reference Figure 3 , Figure 4 and Figure 5 , two first elastic components 6 are installed at intervals on each inner side wall of the plate carrier 2 located in the placement groove 4, and the first elastic component 6 includes a first fixing piece 61, a first elastic curved piece 62 and a limiting piece 63, and the first fixing piece 61 is detachably plugged and fixedly installed in the side wall of the plate carrier 2 located in the placement groove 4. One end of the first elastic curved piece 62 is fixedly connected to the end of the first fixing piece 61, and one end of the limiting piece 63 is fixedly connected to the end of the first elastic curved piece 62 away from the first fixing piece 61, and the first elastic curved piece 62 and the limiting piece 63 are both located in the gap 5.

[0031] Reference Figure 5 , Figure 6 and Figure 7 When the porous plate 3 is placed in the placement groove 4, the bottom of the outer wall of the porous plate 3 will first contact the eight limiting pieces 63. As the porous plate 3 continues to move downward, the porous plate 3 will drive the limiting pieces 63 to move downward. During the movement of the limiting pieces 63, the first elastic curved piece 62 will bend, so that the first elastic curved piece 62 stores elastic potential energy.

[0032] When the porous plate 3 is placed, the eight first elastic bent pieces 62 drive the eight limiting pieces 63 to move towards the porous plate 3 through elastic force, and the ends of the eight limiting pieces 63 abut against the four side walls of the porous plate 3, so that the porous plate 3 can be limited in the horizontal direction, so that the porous plate 3 is not easy to slide in the horizontal direction during the movement of the plate carrier 2.

[0033] A second elastic component 7 is installed on each limiting plate 63, and the second elastic component 7 includes a second fixing plate 71, a second elastic curved plate 72 and a pressing plate 73. The second fixing plate 71 is fixedly installed on the upper half of the top wall of the limiting plate 63, and the angle between the second fixing plate 71 and the limiting plate 63 is between 90-105°. One end of the second elastic curved plate 72 is fixedly connected to the end of the second fixing plate 71 away from the limiting plate 63, and one end of the pressing plate 73 is fixedly connected to the end of the second elastic curved plate 72 away from the second fixing plate 71. Two pressing grooves 8 are spaced apart on each outer side wall of the porous plate 3, and the eight pressing grooves 8 correspond to the eight pressing plates 73 one by one.

[0034] When the porous plate 3 is placed in the placement slot 4, the bottom of the outer wall of the porous plate 3 will first contact the eight limiting plates 63. As the porous plate 3 continues to move downward, the porous plate 3 will drive the limiting plates 63 to move away from itself. During the movement of the limiting plates 63, the second fixing plate 71 will move toward the porous plate 3. The second fixing plate 71 will drive the second elastic curved plate 72 and the pressing plate 73 to move toward the porous plate 3, and the end of the pressing plate 73 will move to contact the porous plate 3. As the second fixing plate 71 continues to move, the pressing plate 73 will drive the second elastic curved plate 72 to bend, so that the second elastic curved plate 72 stores elastic potential energy.

[0035] When the porous plate 3 is placed, the end of the pressing piece 73 away from the second elastic bent piece 72 will move into the pressing groove 8 of the porous plate 3, and the eight second elastic bent pieces 72 will drive the eight pressing pieces 73 to move towards the porous plate 3 through elastic force. The eight pressing pieces 73 press down the porous plate 3 in the eight pressing grooves 8, thereby limiting the porous plate 3 in the vertical direction, so that the porous plate 3 is not easy to slide in the vertical direction during the detection process of the ELISA instrument.

[0036] When the porous plate 3 is taken, as the porous plate 3 continues to move upward, the end of the pressing plate 73 first slides out of the pressing groove 8, and then the second elastic pressing plate 73 drives the pressing plate 73 to move and reset, and finally the first elastic bent piece 62 drives the limiting piece 63 to move and reset, and the limiting piece 63 drives the second fixed piece 71 to move and reset, thereby facilitating the first elastic component 6 and the second elastic component 7 to limit the porous plate 3 again.

[0037] Reference Figure 3 and Figure 4An anti-error block 19 is fixedly installed at a corner of the outer wall of the porous plate 3, and an anti-error groove 20 is provided in the plate carrier 2. The anti-error groove 20 is located at a corner of the placement groove 4, and when the porous plate 3 is placed in the placement groove 4, the anti-error block 19 slides into the anti-error groove 20. When the porous plate 3 is placed, the anti-error block 19 and the anti-error groove 20 can prevent the placement direction of the porous plate 3 from being wrong, so that the porous plate 3 will not be placed upside down.

[0038] Reference Figure 2 and Figure 3 , the outer wall top of the porous plate 3 extends outward and is integrally formed with a flange 18, and buckle grooves 21 are provided on the top wall of the plate carrier 2 and are located around the placement groove 4, and each buckle groove 21 is in the middle of the length or width direction of the plate carrier 2. When the porous plate 3 is completely placed in the placement groove 4, the flange 18 of the porous plate 3 does not contact the top wall of the plate carrier 2. When the detection is completed and the porous plate 3 needs to be taken out, the staff can put their fingers into the buckle groove 21, and then take out the porous plate 3 upward through the flange 18.

[0039] The implementation principle of the microplate reader for biological tests in the embodiment of the present application is as follows: when the microplate reader is in use, the plate carrier 2 slides out of the microplate reader body 1, and the porous plate 3 is placed in the placement slot 4 of the plate carrier 2, and the gap 5 between the outer wall of the porous plate 3 and the inner wall of the placement slot 4 is convenient for taking and placing the porous plate 3. During the placement of the porous plate 3, the bottom of the outer wall of the porous plate 3 will first contact the limiting piece 63, and as the porous plate 3 continues to descend, the porous plate 3 will push the limiting piece 63 to move away from itself, and the limiting piece 63 will drive the first elastic curved piece 62 to bend. When the porous plate 3 is placed, the first elastic curved piece 62 drives the limiting piece 63 to press against the outer wall of the porous plate 3 through elastic force, thereby limiting the porous plate 3 in the horizontal direction, so that the porous plate 3 is not easy to slide in the horizontal direction during the movement of the plate carrier 2. When the porous plate 3 pushes the limiting piece 63 to move, the limiting piece 63 will drive the second fixing piece 71 to move toward the porous plate 3, and the second fixing piece 71 drives the pressing piece 73 to move through the second elastic curved piece 72. As the limiting piece 63 continues to move, the pressing piece 73 moves to contact the outer wall of the porous plate 3 and drives the second elastic curved piece 72 to bend. When the porous plate 3 is placed, the end of the pressing piece 73 enters the pressing groove 8, and the second elastic curved piece 72 drives the pressing piece 73 to press the porous plate 3 through elastic force, thereby limiting the porous plate 3 in the vertical direction, so that the porous plate 3 is not easy to slide in the vertical direction during the detection of the microplate reader. In this way, the gap 5 is convenient for taking and placing the porous plate 3, the first elastic component 6 limits the porous plate 3 in the horizontal direction, and the second elastic component 7 limits the porous plate 3 in the vertical direction, so that the porous plate 3 is convenient for taking and placing on the plate carrier 2, while increasing the stability of the placement of the porous plate 3.

[0040] Embodiment 2: Reference Figure 8 The difference between this embodiment and the first embodiment is that the end of the limiting piece 63 away from the first elastic curved piece 62 is fixedly mounted with the first contact rod 24 along its width direction, and the outer side wall of the first contact rod 24 contacts the side wall of the porous plate 3. The end of the pressing piece 73 away from the second elastic curved piece 72 is fixedly mounted with the second contact rod 25 along its width direction, and the outer side wall of the second contact rod 25 contacts the side wall of the porous plate 3.

[0041] The implementation principle of Example 2 of the present application is: when taking and placing the porous plate 3, the first contact rod 24 and the second contact rod 25 contact the outer wall of the porous plate 3, and the first contact rod 24 and the second contact rod 25 slide on the outer wall of the porous plate 3, thereby reducing the friction between the porous plate 3 and the limiting plate 63 and the pressing plate 73, thereby making the process of taking and placing the porous plate 3 smoother.

[0042] Embodiment 3: Reference Fig. 9 and Fig.10 The difference between this embodiment and the first embodiment is that a reinforcing sheet 9 is fixedly installed at the end of each limiting sheet 63 away from the first elastic curved sheet 62, two elastic members 10 are fixedly installed at intervals on each side wall of the plate carrier 2 located in the placement groove 4, and a push block 11 is fixedly installed at the end of the elastic member 10 away from the inner wall of the placement groove 4. In the present application, the elastic member 10 can be selected as a spring. A guide rod 14 is fixedly installed at the middle of the side wall of each push block 11 close to the elastic member 10, and two guide grooves 15 are provided at intervals on each side wall of the plate carrier 2 located in the placement groove 4, and the guide rod 14 passes through the elastic member 10 and is adapted to slide in the guide groove 15 along the horizontal direction.

[0043] When the porous plate 3 is placed in the placement groove 4, the porous plate 3 will drive the limit plate 63 to move downward, and the limit plate 63 will drive the reinforcing plate 9 to move and contact the push block 11. As the limit plate 63 continues to move, the reinforcing plate 9 will move and squeeze the push block 11, and the push block 11 will squeeze the elastic member 10 under the guidance of the guide rod 14 and the guide groove 15, so that the elastic member 10 shrinks and deforms and stores elastic potential energy.

[0044] When the porous plate 3 is placed, the reinforcing sheet 9 is attached to the outer wall of the porous plate 3, the elastic member 10 releases the elastic energy and pushes the reinforcing sheet 9 through the push block 11, so that the reinforcing sheet 9 is tightly attached to the outer wall of the porous plate 3, and the reinforcing sheet 9 and the limiting sheet 63 cooperate with each other to reinforce and limit the porous plate 3, so that the porous plate 3 can be further limited in the horizontal direction, so that the stability of the porous plate 3 is better.

[0045] The implementation principle of Example 3 of the present application is: the reinforcing plate 9 is used in conjunction with the limiting plate 63 to limit the porous plate 3, and the elastic member 10 acts on the reinforcing plate 9 through the push block 11, so that multiple reinforcing plates 9 can clamp the porous plate 3, thereby further improving the stability of the porous plate 3 in the horizontal direction.

[0046] Embodiment 4: Reference Fig.11 The difference between this embodiment and the embodiment 3 is that the reinforcing sheet 9 protrudes in the middle of the side wall close to the porous plate 3 to form a limiting portion 12, the limiting portion 12 protrudes along the width direction of the reinforcing sheet 9, the cross section of the limiting portion 12 along the vertical direction is a half-water drop arc, and the height of the limiting portion 12 close to the limiting sheet 63 is less than the height of the side away from the limiting sheet 63. Two limiting grooves 13 are arranged on each outer side wall of the porous plate 3, and the eight limiting grooves 13 correspond to the eight limiting portions 12 one by one. The cross section of the limiting grooves 13 along the vertical direction is trapezoidal, and the limiting grooves 13 are outwardly expanded openings.

[0047] During the placement of the porous plate 3, the bottom of the outer side wall of the porous plate 3 will contact the limiting plate 63, the reinforcing plate 9 and the limiting portion 12 in sequence. When the porous plate 3 contacts the limiting portion 12, the porous plate 3 will first contact the side of the limiting portion 12 with a smaller height, making the process of the porous plate 3 from contacting the reinforcing plate 9 to contacting the limiting portion 12 smoother and less susceptible to obstruction, thereby facilitating the placement of the porous plate 3.

[0048] When the porous plate 3 is placed, the reinforcing sheet 9 fits the outer wall of the porous plate 3, and the limiting portion 12 enters the limiting groove 13 of the porous plate 3. The elastic member 10 releases elastic energy and pushes the reinforcing sheet 9 through the push block 11, so that the reinforcing sheet 9 is closely attached to the outer wall of the porous plate 3. At the same time, the reinforcing sheet 9 drives the limiting portion 12 to press against the limiting groove 13, and at this time, the outer wall of the side with a larger height of the limiting portion 12 presses against the inclined inner bottom wall of the limiting groove 13, so that the porous plate 3 can be limited in the vertical direction, further improving the stability of the porous plate 3.

[0049] When the porous plate 3 is taken, after the porous plate 3 moves upward, the limiting portion 12 slides out of the limiting groove 13, and the outer wall of the limiting portion 12 contacts the outer wall of the porous plate 3. Compared with the surface contact between the reinforcing sheet 9 and the porous plate 3, the limiting portion 12 and the porous plate 3 are in line contact, which can reduce the friction resistance of the porous plate 3 when it is taken, so that the porous plate 3 can be taken out smoothly.

[0050] The implementation principle of Example 4 of the present application is as follows: when the porous plate 3 is placed, the limiting part 12 enters the limiting groove 13 of the porous plate 3, the elastic member 10 releases elastic energy and pushes the reinforcing sheet 9 through the push block 11, so that the reinforcing sheet 9 is close to the outer wall of the porous plate 3. At the same time, the reinforcing sheet 9 drives the limiting part 12 to press against the limiting groove 13, and at this time, the outer wall of the side with a larger height of the limiting part 12 presses against the inclined inner bottom wall of the limiting groove 13, so that the porous plate 3 can be limited in the vertical direction, further improving the stability of the porous plate 3.

[0051] Embodiment 5: Reference Fig.12 The difference between this embodiment and embodiment 4 is that the end of the pressing plate 73 away from the second elastic bent plate 72 is fixedly connected to the third elastic bent plate 16, the end of the third elastic bent plate 16 away from the pressing plate 73 is fixedly connected to the positioning plate 17, and a chamfer 26 is formed at the bottom of the porous plate 3 at the opening of each pressing groove 8.

[0052] During the placement of the porous plate 3, the limiting plate 63 drives the second fixed plate 71, the second elastic bent plate 72 and the pressing plate 73 to move, and the pressing plate 73 drives the third elastic bent plate 16 and the positioning plate 17 to move toward the porous plate 3. As the limiting plate 63 continues to move, the positioning plate 17 will first move to contact the outer wall of the porous plate 3 and drive the third elastic bent plate 16 to bend, and then the pressing plate 73 drives the second elastic bent plate 72 to bend.

[0053] When the porous plate 3 is placed, the end of the pressing sheet 73 enters the pressing groove 8. At this time, the pressing sheet 73 is pressed down at the chamfer 26. The chamfer 26 increases the contact area between the pressing sheet 73 and the porous plate 3, thereby making the pressing of the pressing sheet 73 more stable.

[0054] When the end of the pressing sheet 73 enters the pressing groove 8, the pressing sheet 73 drives the third elastic bent sheet 16 and the positioning sheet 17 to enter the pressing groove 8, and the third elastic bent sheet 16 drives the positioning sheet 17 to press against the inner wall of the pressing groove 8, thereby further limiting the porous plate 3 in the horizontal direction.

[0055] When the porous plate 3 is taken out, the third elastic bent piece 16 and the positioning piece 17 can be withdrawn from the pressing groove 8 through the chamfer 26, so that the third elastic bent piece 16 and the positioning piece 17 can be quickly withdrawn from the pressing groove 8, thereby facilitating the smooth removal of the porous plate 3.

[0056] The implementation principle of Example 5 of the present application is as follows: during the placement of the porous plate 3, the limiting piece 63 drives the second fixed piece 71, the second elastic curved piece 72 and the pressing piece 73 to move, and the pressing piece 73 drives the third elastic curved piece 16 and the positioning piece 17 to move toward the porous plate 3. As the limiting piece 63 continues to move, the positioning piece 17 will first move to contact the outer wall of the porous plate 3 and drive the third elastic curved piece 16 to bend. When the porous plate 3 is completely placed, the end of the pressing piece 73 enters the pressing groove 8, and at this time, the pressing piece 73 is pressed down at the chamfer 26, which increases the contact area between the pressing piece 73 and the porous plate 3, thereby making the pressing of the pressing piece 73 more stable.

[0057] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A microplate reader for biological tests, comprising a microplate reader body (1), a plate carrier (2) and a porous plate (3), wherein the plate carrier (2) is slidably mounted in the side wall of the microplate reader body (1) in a horizontal direction, a placement groove (4) is provided on the top wall of the plate carrier (2), and the porous plate (3) is placed in the placement groove (4), characterized in that: There is a gap (5) between the outer wall of the multi-hole plate (3) and the inner wall of the plate carrier (2) located in the placement groove (4), and at least one first elastic component (6) is provided on each inner wall of the plate carrier (2) located in the placement groove (4). The first elastic component (6) comprises a first fixing plate (61), a first elastic bending plate (62) and a limiting plate (63). The first fixing plate (61) is fixedly arranged on the inner wall of the plate carrier (2) located in the placement groove (4), and the first elastic bending plate (62) is fixedly arranged on the inner wall of the plate carrier (2) located in the placement groove (4). One end of the limiting piece (63) is fixedly connected to the end of the fixing piece, the end of the limiting piece (63) is fixedly connected to the other end of the first elastic bent piece (62), the first elastic bent piece (62) and the limiting piece (63) are both located in the gap (5), when the porous plate (3) is placed in the placement groove (4), the outer wall of the porous plate (3) pushes the limiting piece (63) to move and drives the first elastic bent piece (62) to bend through the limiting piece (63), and the first elastic bent piece (62) drives the limiting piece (63) to press against the outer side of the porous plate (3) The second elastic component (7) is arranged on each of the limiting plates (63), and the second elastic component (7) comprises a second fixing plate (71), a second elastic curved plate (72) and a pressing plate (73), the second fixing plate (71) is fixedly arranged on the top wall of the limiting plate (63), the bottom end of the second elastic curved plate (72) is fixedly connected to the top end of the first fixing plate (61), the bottom end of the pressing plate (73) is fixedly connected to the top end of the second elastic curved plate (72), and the outer peripheral side wall of the porous plate (3) A plurality of pressing grooves (8) are provided on the upper surface, and the plurality of pressing grooves (8) correspond to the plurality of pressing sheets (73) one by one. When the limiting sheet (63) moves, it drives the second elastic component (7) to move toward the direction close to the porous plate (3). The pressing sheet (73) moves to abut against the outer wall of the porous plate (3) and drives the second elastic bending sheet (72) to bend. When the porous plate (3) is placed in the placement groove (4), the end of the pressing sheet (73) enters the pressing groove (8), and the second elastic bending sheet (72) drives the pressing sheet (73) to press the porous plate (3) downward.

2. A microplate reader for biological testing according to claim 1, characterized in that: A reinforcing sheet (9) is fixedly provided at the end of each of the limiting sheets (63) away from the first elastic bent sheet (62); a plurality of elastic members (10) are provided at the bottom of the peripheral side wall of the plate carrier (2) located in the placement groove (4); the plurality of elastic members (10) correspond to the plurality of reinforcing sheets (9) one by one; a push block (11) is fixedly provided at the end of the elastic member (10); the push block (11) is slidably provided in the placement groove (4) of the plate carrier (2); when the porous plate (3) is placed in the placement groove (4), the porous plate (3) pushes the limiting sheet (63) to move; the limiting sheet (63) drives the reinforcing sheet (9) to move and abut against the push block (11); the elastic member (10) pushes the reinforcing sheet (9) to abut against the porous plate (3) through the push block (11); 3. A microplate reader for biological testing according to claim 2, characterized in that: A limiting portion (12) is formed by protruding on the side wall of each of the reinforcing sheets (9) away from the push block (11), and a plurality of limiting grooves (13) are provided at the bottom of the outer side wall of the porous plate (3). The plurality of limiting grooves (13) correspond to the plurality of limiting portions (12) one by one. The cross-section of the limiting grooves (13) is trapezoidal, and the limiting grooves (13) are arranged with outward expansion. When the elastic member (10) pushes the reinforcing sheet (9) to press against the porous plate (3) through the push block (11), the reinforcing sheet (9) pushes the limiting portion (12) to press against the limiting groove (13), and the outer side wall of the limiting portion (12) abuts against the lower inner side wall of the limiting groove (13).

4. A microplate reader for biological testing according to claim 2, characterized in that: A guide rod (14) is fixedly arranged at the middle of the side wall of each push block (11) away from the reinforcing plate (9), and a plurality of guide grooves (15) are opened on the inner side wall of the plate carrier (2) located in the placement groove (4), and the plurality of guide rods (14) are slidably arranged in the plurality of guide grooves (15) along the sliding direction of the push block (11).

5. A microplate reader for biological testing according to any one of claims 1 to 4, characterized in that: A third elastic bent piece (16) is fixedly provided at the top end of the pressing piece (73) away from the second elastic bent piece (72), and a positioning piece (17) is fixedly provided at the end of the third elastic bent piece (16) away from the pressing piece (73). When the end of the pressing piece (73) enters the pressing groove (8), the pressing piece (73) drives the third elastic bent piece (16) and the positioning piece (17) to enter the pressing groove (8), and the third elastic bent piece (16) drives the positioning piece (17) to press against the inner wall of the pressing groove (8).

6. A microplate reader for biological testing according to claim 1, characterized in that: The top of the outer side wall of the porous plate (3) extends outward to form a flange (18).

7. A microplate reader for biological testing according to claim 1, characterized in that: An anti-error block (19) is fixedly arranged at one corner of the porous plate (3), an anti-error groove (20) is provided at one corner of the plate carrier (2) located at the placement groove (4), and the anti-error block (19) is slidably arranged in the anti-error groove (20).

8. The microplate reader for biological testing according to claim 1, characterized in that: The angle between the limiting plate (63) and the second fixing plate (71) is between 90° and 105°.

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