A microplate reader for biological testing

Abstract

The present application discloses a microplate reader for biological experiments, which relates to the technical field of microplate readers, and includes a microplate reader body, a plate carrier, and a porous plate. The plate carrier is provided with a placement slot, and there is a gap between the porous plate and the inner wall of the placement slot. A first elastic component is provided in the plate carrier, and the first elastic component includes a first fixed plate, a first elastic bent plate, and a limiting plate. The limiting plate is provided with a second elastic component, and the second elastic component includes a second fixed plate, a second elastic bent plate, and a pressing plate. The present application utilizes the gap between the outer wall of the porous plate and the inner wall of the placement slot to facilitate the taking and placing of the porous plate, uses the first elastic component to limit the porous plate in the horizontal direction, and uses the second elastic component to limit the porous plate in the vertical direction, so as to facilitate the smooth taking and placing of the porous plate on the plate carrier while increasing the stability of the placement of the porous plate.

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, mainly used for quantitative analysis of biological molecules. The microplate reader measures the absorbance, fluorescence or luminescence signals of samples at specific wavelengths and combines them with multi-well plates to achieve high-throughput detection. It is widely used in ELISA, cell activity detection, drug screening, immunoassay and other fields.

[0003] Currently, when the microplate reader is in use, the plate carrier will slide out of the microplate reader body. 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 microplate reader body 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 will be easily hindered; if the gap reserved between the placement slot and the multi-well plate is large, the multi-well plate will easily slide horizontally in the placement slot during the movement of the plate carrier, or there will be slight vibration during the detection process of the microplate reader, which will also cause the multi-well plate to slide vertically in the placement slot. Summary of the Invention

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

[0006] The present application provides a microplate reader for biological testing that adopts the following technical solution:

[0007] The cam is secured to the upper and lower surfaces of the plate carrier and is adapted to engage the plate when the plate is in the upright position. The cam is fixedly mounted on the support frame of the second support member, and the cam is fixedly mounted on the support member, wherein the cam is fixedly mounted on the support member, and the cam is fixedly mounted on the support member.

[0008] 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 multi-well plate is placed in the placement slot of the plate carrier. The gap between the outer wall of the multi-well plate and the inner wall of the placement slot facilitates the taking and placing of the multi-well plate. During the placement of the multi-well plate, the bottom of the outer wall of the multi-well plate will first contact the limiting plate. As the multi-well plate continues to descend, the multi-well plate will push the limiting plate to move away from itself, and the limiting plate will drive the first elastic bent piece to bend. When the multi-well plate is placed, the first elastic bent piece drives the limiting piece to press against the outer wall of the multi-well plate through elastic force, thereby limiting the multi-well plate in the horizontal direction, making it difficult for the multi-well plate to slide in the horizontal direction during the movement of the plate carrier. When the porous plate pushes the limiting piece to move, the limiting piece will drive the second fixed piece to move toward the porous plate, and the second fixed piece will drive the pressing piece to move through the second elastic bent piece. As the limiting piece continues to move, the pressing piece will move to contact the outer wall of the porous plate and drive the second elastic bent piece to bend. When the porous plate is placed, the end of the pressing piece enters the pressing groove, and the second elastic bent piece drives the pressing piece to press the porous plate through elastic force, thereby limiting the porous plate in the vertical direction, making it difficult for the porous plate to slide in the vertical direction during the detection process of the microplate reader. With this arrangement, the gap facilitates the taking and placing of 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.

[0009] Preferably, each of the limiting plates is fixedly provided with a reinforcing plate at the end away from the first elastic bent plate, and the plate carrier is provided with a plurality of elastic members at the bottom of the peripheral side wall of the placement groove, and the plurality of elastic members correspond one-to-one to the plurality of reinforcing plates, and a push block is fixedly provided at the end of the elastic member, and 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, and the limiting plate drives the reinforcing plate to move and abut against the pushing block, and the elastic member pushes the reinforcing plate to press against the porous plate through the pushing block.

[0010] 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, and the reinforcing plate moves to abut the push block. When the porous plate is placed, the porous plate pushes the push block to move through the reinforcing plate, and the push block squeezes the elastic part. 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 horizontal limiting effect of the porous plate.

[0011] 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 outward. 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 the lower inner wall of the limiting groove.

[0012] By adopting the above technical solution, when the elastic force of the elastic part 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.

[0013] 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 adapted to slide in the plurality of guide grooves along the sliding direction of the push block.

[0014] By adopting the above technical solution, when the reinforcement plate pushes the push block to move, the push block drives the guide rod to slide in the guide groove of the carrier frame. 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.

[0015] 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.

[0016] 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. 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.

[0017] Preferably, the top of the outer side wall of the porous plate extends outward to form a flange.

[0018] By adopting the above technical solution, after the microplate reader completes the detection, the flange can facilitate the staff to remove the multi-well plate from the plate carrier.

[0019] Preferably, an anti-error block is fixedly provided at one corner of the porous plate, an anti-error groove is provided at one corner of the plate carrier located at the placement groove, and the anti-error block is slidably provided in the anti-error groove.

[0020] By adopting the above technical solution, when the porous plate is placed, the porous plate will drive the anti-error block into the anti-error groove of the plate carrier, so that the porous plate will not be placed upside down.

[0021] Preferably, the angle between the limiting plate and the second fixing plate is between 90-105°.

[0022] 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.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 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, thereby facilitating the smooth placement of the porous plate on the plate carrier and increasing the stability of the placement of the porous plate;

[0025] 2. With the help of the reinforcement sheet, when the porous plate is placed in the placement slot, the porous plate will push the limiting sheet to move, and the limiting sheet will drive the reinforcement sheet to move, and the reinforcement sheet moves to abut against the push block. When the porous plate is placed, the porous plate pushes the push block to move through the reinforcement sheet, and the push block squeezes the elastic member. The elastic force of the elastic member acts on the reinforcement sheet through the push block, so that the reinforcement sheet can press against the porous plate, thereby further improving the horizontal limiting effect of the porous plate;

[0026] 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 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. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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;

[0028] Figure 2This is a schematic diagram of the overall structure of the microplate reader for biological testing in Example 1 of the present application, highlighting the state where the plate carrier is slid out;

[0029] Figure 3 A top view of a portion of the structure of the microplate reader for biological testing in Example 1 of the present application;

[0030] Figure 4 For this application Figure 3 Explosion cross-section in the AA direction;

[0031] Figure 5 For this application Figure 4 The enlarged schematic diagram of point B in the middle;

[0032] Figure 6 This is a partial structural cross-sectional view of Example 1 of the present application, highlighting the state of the porous plate insertion process;

[0033] Figure 7 This is a partial structural cross-sectional view of Example 1 of the present application, highlighting the state where the porous plate has been inserted;

[0034] Figure 8 This is a partial structural cross-sectional view of Example 2 of the present application, highlighting the state where the porous plate has been inserted;

[0035] Figure 9 This is a partial structural cross-sectional view of Example 3 of the present application, highlighting the state of the porous plate insertion process;

[0036] Figure 10 This is a partial structural cross-sectional view of Example 3 of the present application, highlighting the state where the porous plate has been inserted;

[0037] Figure 11 This is a partial structural cross-sectional view of Example 4 of the present application, highlighting the state where the porous plate has been inserted;

[0038] Figure 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.

[0039] 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 bent plate; 63. Limiting plate; 7. Second elastic component; 71. Second fixed plate; 72. Second elastic bent plate; 73. Pressing plate; 8. Pressing groove; 9. Reinforcement plate; 10. Elastic part; 11. Push block; 12. Limiting part; 13. Limiting groove; 14. Guide rod; 15. Guide groove; 16. Third elastic bent 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

[0040] The following is combined with Figures 1-12 This application is described in further detail.

[0041] Example 1:

[0042] The embodiment of the present application discloses an enzyme-labeled instrument for biological experiments.

[0043] Reference Figure 1 and Figure 2 A 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, and a torsion spring is installed at the rotating connection between the baffle 23 and the microplate reader body 1.

[0044] Reference Figure 2 、 Figure 3 and Figure 4 The plate carrier 2 is slidably installed in the accommodating cavity 22 of the microplate reader 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.

[0045] When the plate carrier 2 slides out of the accommodating chamber 22 of the microplate reader body 1, the plate carrier 2 pushes the baffle 23 to rotate open, and the porous plate 3 can be taken or placed. 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 placement of the porous plate 3, thereby making the taking and placement of the porous plate 3 smoother. When the plate carrier 2 slides into the accommodating chamber 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 chamber 22.

[0046] 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 slot 4. The first elastic components 6 include a first fixing piece 61, a first elastic curved piece 62, and a limiting piece 63. The first fixing piece 61 is removably plugged and fixedly installed in the side wall of the plate carrier 2 located in the placement slot 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. The first elastic curved piece 62 and the limiting piece 63 are both located in the gap 5.

[0047] Reference Figure 5 、 Figure 6 and Figure 7 When the porous plate 3 is placed in the placement slot 4, the bottom of the outer wall of the porous plate 3 first contacts the eight limiting pieces 63. As the porous plate 3 continues to move downward, the porous plate 3 drives the limiting pieces 63 downward. The movement of the limiting pieces 63 causes the first elastic curved piece 62 to bend, causing the first elastic curved piece 62 to store elastic potential energy.

[0048] When the porous plate 3 is placed, the eight first elastic bent pieces 62 drive the eight limiting pieces 63 to move toward the porous plate 3 through elastic force, and the ends of the eight limiting pieces 63 abut the four side walls of the porous plate 3, 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.

[0049] Each limiting plate 63 is equipped with a second elastic component 7, which includes a second fixing plate 71, a second elastic curved plate 72, and a pressing plate 73. The second fixing plate 71 is fixedly mounted 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 one-to-one to the eight pressing plates 73.

[0050] 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 away from the porous plate 3. 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 cause the second elastic curved plate 72 to bend, causing the second elastic curved plate 72 to store elastic potential energy.

[0051] 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. The eight second elastic bent pieces 72 drive the eight pressing pieces 73 to move toward 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 microplate reader.

[0052] 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 bent piece 72 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.

[0053] Reference Figure 3 and Figure 4 An 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 opened in the plate carrier 2. The anti-error groove 20 is located at a corner of the placement groove 4. 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.

[0054] Reference Figure 2 and Figure 3 The top of the outer wall of the porous plate 3 is integrally formed with a flange 18 extending outward. The top wall of the plate carrier 2 is provided with buckle grooves 21 located around the placement slot 4. Each buckle groove 21 is located in the middle of the length or width of the plate carrier 2. When the porous plate 3 is fully placed in the placement slot 4, the flange 18 of the porous plate 3 does not contact the top wall of the plate carrier 2. When the test is completed and the porous plate 3 needs to be removed, the staff member can insert their fingers into the buckle groove 21 and then lift the porous plate 3 upward through the flange 18 to remove it.

[0055] The implementation principle of the microplate reader for biological experiments 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. The gap 5 between the outer wall of the porous plate 3 and the inner wall of the placement slot 4 facilitates the taking and placing of 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. 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 bent piece 62 to bend. When the porous plate 3 is placed, the first elastic bent 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 the elastic force, thereby limiting the porous plate 3 in the vertical direction, making it difficult for the porous plate 3 to slide in the vertical direction during the microplate reader detection process. In this way, the gap 5 facilitates the placement of 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, thereby facilitating the smooth placement of the porous plate 3 on the plate carrier 2 while increasing the stability of the porous plate 3.

[0056] Example 2:

[0057] Reference Figure 8 The difference between this embodiment and embodiment 1 is that the first contact rod 24 is fixedly mounted along the width direction of the limiting piece 63 at the end away from the first elastic curved piece 62, and the outer side wall of the first contact rod 24 contacts the side wall of the porous plate 3. The second contact rod 25 is fixedly mounted along the width direction of the pressing piece 73 at the end away from the second elastic curved piece 72, and the outer side wall of the second contact rod 25 contacts the side wall of the porous plate 3.

[0058] 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, reducing the friction between the porous plate 3 and the limiting plate 63 and the pressing plate 73, thereby making the taking and placing process of the porous plate 3 smoother.

[0059] Example 3:

[0060] Reference Figure 9 and Figure 10 The difference between this embodiment and the first embodiment is that a reinforcing plate 9 is fixedly mounted on the end of each limiting plate 63 away from the first elastic curved plate 62, two elastic members 10 are fixedly mounted at intervals on each side wall of the plate carrier 2 located in the placement slot 4, and a push block 11 is fixedly mounted on the end of the elastic member 10 away from the inner wall of the placement slot 4. In the present application, the elastic member 10 can be a spring. A guide rod 14 is fixedly mounted on the middle portion of the side wall of each push block 11 near the elastic member 10, and two guide grooves 15 are defined at intervals on each side wall of the plate carrier 2 located in the placement slot 4. The guide rods 14 pass through the elastic member 10 and slide horizontally in the guide grooves 15.

[0061] When the porous plate 3 is placed in the placement slot 4, the porous plate 3 drives the limiting piece 63 to move downward. During the movement of the limiting piece 63, the reinforcing piece 9 moves to contact the push block 11. As the limiting piece 63 continues to move, the reinforcing piece 9 moves and presses the push block 11. Under the guidance of the guide rod 14 and the guide slot 15, the push block 11 presses the elastic member 10, causing the elastic member 10 to contract and deform and store elastic potential energy.

[0062] 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 close to the outer wall of the porous plate 3. At this time, the reinforcing sheet 9 and the limiting sheet 63 cooperate to reinforce and limit the porous plate 3, so that the porous plate 3 can be further limited in the horizontal direction, making the porous plate 3 more stable.

[0063] 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.

[0064] Example 4:

[0065] Reference Figure 11 This embodiment differs from Embodiment 3 in that a stopper 12 is formed on the middle portion of the sidewall of the reinforcing plate 9 near the porous plate 3. The stopper 12 extends along the width of the reinforcing plate 9. The vertical cross-section of the stopper 12 is semi-teardrop-shaped, and the height of the stopper 12 near the stopper 63 is less than the height away from the stopper 63. Two stopper grooves 13 are spaced apart on each outer sidewall of the porous plate 3. The eight stopper grooves 13 correspond one to one with the eight stopper grooves 12. The vertical cross-section of the stopper grooves 13 is trapezoidal, and the stopper grooves 13 are outwardly flared.

[0066] During the placement of the porous plate 3, the bottom of the outer wall of the porous plate 3 will contact the limiting piece 63, the reinforcing piece 9 and the limiting part 12 in sequence. When the porous plate 3 contacts the limiting part 12, the porous plate 3 will first contact the side of the limiting part 12 with a smaller height, so that the process of the porous plate 3 from contacting the reinforcing piece 9 to contacting the limiting part 12 is smoother and less likely to be obstructed, thereby facilitating the placement of the porous plate 3.

[0067] When the porous plate 3 is completely placed, the reinforcing sheet 9 fits against 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 its elastic energy and pushes the reinforcing sheet 9 via the push block 11, causing the reinforcing sheet 9 to cling tightly to the outer wall of the porous plate 3. At the same time, the reinforcing sheet 9 drives the limiting portion 12 to press tightly against the limiting groove 13. At this time, the outer wall of the limiting portion 12 with a greater height presses against the inclined inner bottom wall of the limiting groove 13, thereby limiting the porous plate 3 in the vertical direction and further improving the stability of the porous plate 3.

[0068] When the porous plate 3 is removed, 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 have a line contact, which can reduce the friction resistance encountered by the porous plate 3 when it is removed, thereby facilitating smooth removal of the porous plate 3.

[0069] The working principle of Example 4 of the present application is as follows: when the porous plate 3 is completely placed, the limiting portion 12 enters the limiting groove 13 of the porous plate 3, the elastic member 10 releases its elastic energy and pushes the reinforcing sheet 9 via the push block 11, so that the reinforcing sheet 9 is tightly 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 tightly against the limiting groove 13. At this time, the outer wall of the side of the limiting portion 12 with a greater height presses against the inclined inner bottom wall of the limiting groove 13, thereby limiting the porous plate 3 in the vertical direction and further improving the stability of the porous plate 3.

[0070] Example 5:

[0071] Reference Figure 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, and the end of the third elastic bent plate 16 away from the pressing plate 73 is fixedly connected to the positioning plate 17, and the bottom of the porous plate 3 at the opening of each pressing groove 8 is formed with a chamfer 26.

[0072] During the placement of the porous plate 3, the limiting plate 63 drives the second fixing 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.

[0073] 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.

[0074] 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.

[0075] When the porous plate 3 is taken out, the third elastic bent piece 16 and the positioning piece 17 can exit the pressing groove 8 through the chamfer 26, so that the third elastic bent piece 16 and the positioning piece 17 can quickly exit the pressing groove 8, thereby facilitating the smooth removal of the porous plate 3.

[0076] 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 fixing 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. At this time, the pressing piece 73 is pressed down at the chamfer 26. The chamfer 26 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.

[0077] The above are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that the present disclosure may be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A microplate reader for biological testing, comprising a microplate reader body (1), a plate carrier (2) and a porous plate (3), wherein the plate carrier (2) is slidably mounted in a horizontal direction within the side wall of the microplate reader body (1), 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 side wall of the porous plate (3) and the inner side 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 side wall of the plate carrier (2) located in the placement groove (4). The first elastic component (6) includes a first fixing piece (61), a first elastic bent piece (62) and a limiting piece (63). The first fixing piece (61) is fixedly provided on the inner side wall of the plate carrier (2) located in the placement groove (4), and the first elastic bent piece (62) is fixedly provided on the inner side 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, and 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). The first elastic bent piece (62) drives the limiting piece (63) to press against the outer side of the porous plate (3). Wall; each of the limiting pieces (63) is provided with a second elastic component (7), the second elastic component (7) comprises a second fixed piece (71), a second elastic bent piece (72) and a pressing piece (73), the second fixed piece (71) is fixedly arranged on the top wall of the limiting piece (63), the bottom end of the second elastic bent piece (72) is fixedly connected to the top end of the first fixed piece (61), the bottom end of the pressing piece (73) is fixedly connected to the top end of the second elastic bent piece (72), the outer peripheral side wall of the porous plate (3) A plurality of pressing grooves (8) are provided on the upper portion, and the plurality of pressing grooves (8) correspond to a plurality of pressing sheets (73) in a one-to-one manner. When the limiting sheet (63) moves, it drives the second elastic component (7) to move toward 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 bent 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 bent 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: The end of each of the limiting pieces (63) away from the first elastic bent piece (62) is fixedly provided with a reinforcing piece (9); the bottom of the peripheral side wall of the plate carrier (2) located in the placement groove (4) is provided with a plurality of elastic members (10); the plurality of elastic members (10) correspond one to one with the plurality of reinforcing pieces (9); the end of the elastic member (10) is fixedly provided with a push block (11); 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 piece (63) to move, and the limiting piece (63) drives the reinforcing piece (9) to move and abut against the push block (11); the elastic member (10) pushes the reinforcing piece (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 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 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 groove (13) is trapezoidal, and the limiting groove (13) is expanded outward. When the elastic member (10) pushes the reinforcing sheet (9) against the porous plate (3) through the push block (11), the reinforcing sheet (9) pushes the limiting portion (12) to be pressed against the limiting groove (13), and the outer wall of the limiting portion (12) abuts against the lower inner 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 provided on the middle part of the side wall of each push block (11) away from the reinforcing plate (9), and a plurality of guide grooves (15) are provided on the inner side wall of the plate carrier (2) located in the placement groove (4), and the plurality of guide rods (14) are adapted and slidably provided 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 provided at one corner of the porous plate (3); an anti-error groove (20) is provided at one corner of the plate carrier (2) located in the placement groove (4); and the anti-error block (19) is slidably provided in the anti-error groove (20).

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

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