PCR (Polymerase Chain Reaction) sample tube placing rack for experiment
By introducing a buffer mechanism and an adjustment mechanism into the PCR sample tube placement rack, the damage and non-fixation problems of sample tubes of different specifications during placement and movement are solved, and the effective fixation and protection of the sample tubes are achieved.
Patent Information
- Application Number
- CN202420620365.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing PCR sample tube placing rack cannot adapt to sample tubes of different specifications, resulting in the sample tube being easily damaged or not fixed when placed and moved, causing bumps, slippage and overturning.
An experimental PCR sample tube placement rack including a buffering mechanism and a regulating mechanism was designed. The buffering mechanism provides a cushioning effect through the slide column, the buffer sheet and the spring to prevent the sample tube from being damaged; the adjustment mechanism adjusts the size of the sleeve through the knob, screw and limiting hole to adapt to sample tubes of different sizes and fix its position.
This placing rack can effectively prevent PCR sample tubes from being damaged during placement and is suitable for sample tubes of different sizes, ensuring that they are not prone to bumps, slips or capsizing when moved and stored.
Smart Images
Figure CN222567828U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCR sample tube holder technology, specifically a PCR sample tube holder for laboratory use. Background Technology
[0002] With the development and popularization of PCR technology, PCR sample tubes, as an important experimental instrument, have also been gradually developed and improved. PCR sample tubes are usually made of heat-resistant polymer materials to adapt to the high-temperature cycling conditions during the PCR reaction process. They have characteristics such as anti-contamination, heat resistance, and good transparency, providing a suitable environment for PCR reactions and ensuring the accuracy and reliability of the reaction. PCR sample tubes require a special rack for placement. Existing PCR sample tube racks have evenly distributed placement holes inside. When placing PCR sample tubes, they are inserted into the placement holes to achieve the desired placement effect. Since the diameters of PCR sample tubes vary, the placement hole specifications of traditional PCR sample tube racks are fixed, which is quite inconvenient as different sizes of PCR sample tubes require different racks. When placing PCR sample tubes, the bottom of the PCR sample tube makes rigid contact with the lower end of the rack, which can easily damage the PCR sample tube and the internal solution. There is a gap between the PCR sample and the placement hole. When moving or transporting PCR sample tubes, they cannot be effectively fixed, which can easily cause bumps, slippage, and tipping. Therefore, we propose an experimental PCR sample tube rack. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a PCR sample tube holder for experiments. It is equipped with a buffer mechanism so that the PCR sample tubes will not be damaged when placed. It is suitable for PCR sample tubes of different sizes and can fix the PCR sample tubes at the same time, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a PCR sample tube holder for experiments, comprising a base, a buffer mechanism, and an adjustment mechanism;
[0005] Base: It has four uprights at the top corners, and the top of each of the four uprights is fixedly connected to the bottom of a fixed plate. The top of the fixed plate has evenly distributed clearance openings. The top of the base has evenly distributed handles around its perimeter. The top of the base has evenly distributed mounting holes in the center. Sleeves are fixedly connected inside the mounting holes. The outer surface of the upper end of the sleeves fits into the inner wall of the clearance openings. The bottom of the base has four support feet at the bottom corners.
[0006] Buffer mechanisms: These are respectively located at the lower end of the inner cavity of the sleeve;
[0007] Adjustment mechanism: It is located between the fixed plate and the base. The adjustment mechanism is installed in conjunction with the outer surface of the sleeve. It is equipped with a buffer mechanism so that the PCR sample tubes used in the experiment will not be damaged when they are placed. It is suitable for PCR sample tubes of different sizes and can also fix the PCR sample tubes used in the experiment.
[0008] Furthermore, the buffer mechanism includes a sliding column, a buffer plate, and a spring. The sliding columns are all slidably connected to the lower end of the sleeve through through holes, and the buffer plates are all fixedly connected to the upper end of the sliding column. A spring is provided between the lower end of the buffer plate and the inner wall of the sleeve. The spring is sleeved on the outer surface of the sliding column to provide a buffering effect for placement.
[0009] Furthermore, the upper end of the outer surface of the sleeve is provided with evenly distributed clearance grooves, and the middle of the outer surface of the sleeve is provided with annular protrusions that are thinner at the top and thicker at the bottom, providing a basis for adjusting the diameter of the sleeve.
[0010] Furthermore, the adjustment mechanism includes an adjustment plate, two springs, and limiting holes. The adjustment plate is slidably connected to the outer surface of the four columns through sliding holes at the four corners. Two springs are provided between the lower end of the adjustment plate and the upper end of the base. The two springs are sleeved on the outer surface of the columns. The limiting holes are evenly opened at the upper end of the adjustment plate to facilitate adjustment.
[0011] Furthermore, the inner wall of the limiting hole is an inclined inner wall that is narrower at the top and wider at the bottom. The inner wall of the limiting hole is fitted with the vertically adjacent annular protrusion, which can quickly clamp the sample tube.
[0012] Furthermore, the adjustment mechanism also includes a lead screw and a top plate. The lead screw is threadedly connected to the inside of the fixed plate, and the top plate is fixedly connected to the lower end of the lead screw. The lower end of the top plate fits against the upper middle part of the adjustment plate, providing a stable foundation for the adjustment work.
[0013] Furthermore, the adjustment mechanism also includes a knob, which is fixedly connected to the upper end of the lead screw for easy manual operation.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The PCR sample tube holder used in this experiment has the following advantages:
[0015] 1. When placing PCR sample tubes, insert the sample tubes into the sleeve one by one. When the bottom of the sleeve contacts the buffer, the downward impact of the sample tube causes the buffer to move down, and the sliding column moves down as well. The spring is compressed. At this time, because the downward impact of the sample tube is small, the elasticity of the spring itself absorbs the downward impact of the sample tube, effectively preventing the bottom of the experimental PCR sample tube from directly contacting the bottom wall of the sleeve and being damaged. The buffer mechanism ensures that the tube body will not be damaged when placing the experimental PCR sample tube.
[0016] 2. Turn the knob, and the lead screw will also turn and move downwards, causing the top plate to move downwards as well. The top plate continuously presses against the adjusting plate, causing the adjusting plate to move downwards synchronously. The spring is compressed, and the inner wall of the limiting hole contacts the outer surface of the annular protrusion. As the adjusting plate continues to move downwards, the inner wall of the limiting hole continuously presses against the outer surface of the annular protrusion, causing the upper end of the sleeve to slowly contract inwards until the anti-slip rubber strip on the inner wall of the sleeve contacts the outer surface of the sample tube. At this point, the sample tube is fixed. For smaller diameter PCR sample tubes, continue to rotate the knob and press the adjusting plate downwards. The limiting hole will cause the upper end of the sleeve to contract further inwards until the anti-slip rubber strip on the inner wall of the sleeve contacts the outer surface of the PCR sample tube again. This completes the placement of PCR sample tubes of different specifications, and is suitable for PCR sample tubes of different sizes while also fixing them. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional structural diagram of the buffer mechanism and adjustment mechanism of this utility model;
[0019] Figure 3 This is a schematic diagram of the buffer mechanism of this utility model.
[0020] In the diagram: 1. Base, 2. Column, 3. Fixing plate, 4. Handle, 5. Support leg, 6. Sleeve, 7. Buffer mechanism, 71. Sliding column, 72. Buffer plate, 73. Spring 1, 8. Adjustment mechanism, 81. Adjustment plate, 82. Spring 2, 83. Limiting hole, 84. Lead screw, 85. Top plate, 86. Knob, 9. Limiting protrusion. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-3 This embodiment provides a technical solution: a PCR sample tube holder for experiments, including a base 1, a buffer mechanism 7 and an adjustment mechanism 8;
[0023] Base 1: Each of its four corners is provided with a column 2. The upper ends of the four columns 2 are fixedly connected to the lower end of a fixing plate 3. The upper end of the fixing plate 3 is provided with evenly distributed clearance openings. The upper end of the base 1 is provided with evenly distributed handles 4 around its perimeter for easy movement of the placement rack. The upper end of the base 1 is provided with evenly distributed mounting holes in the middle. Each mounting hole is fixedly connected with a sleeve 6. The upper end of the sleeve 6 is a flared opening for easy insertion of sample tubes. The upper end of the inner wall of the sleeve 6 is provided with an anti-slip rubber strip for anti-slip effect. The upper outer surface of the sleeve 6 is fitted with the inner wall of the clearance opening. The four corners of the bottom of the base 1 are provided with support feet 5 to provide stable support for the placement rack. The upper end of the outer surface of the sleeve 6 is provided with evenly distributed clearance grooves. The middle of the outer surface of the sleeve 6 is provided with annular protrusions 9 that are thinner at the top and thicker at the bottom, providing a basis for adjusting the diameter of the sleeve 6.
[0024] Buffer mechanism 7: It is respectively set in the lower end of the sleeve 6. The buffer mechanism 7 includes a sliding column 71, a buffer plate 72 and a spring 73. The sliding column 71 is slidably connected to the lower end of the sleeve 6 through the through hole. The buffer plate 72 is fixedly connected to the upper end of the sliding column 71. The lower end of the buffer plate 72 is provided with a spring 73 between it and the inner wall of the sleeve 6. The spring 73 is sleeved on the outer surface of the sliding column 71 to provide a buffering effect for placement.
[0025] Adjustment mechanism 8: It is located between the fixed plate 3 and the base 1. The adjustment mechanism 8 is installed in conjunction with the outer surface of the sleeve 6. The adjustment mechanism 8 includes an adjustment plate 81, a second spring 82, and a limiting hole 83. The adjustment plate 81 is slidably connected to the outer surface of the four columns 2 through sliding holes at the four corners. A second spring 82 is provided between the lower end of the adjustment plate 81 and the upper end of the base 1. The second spring 82 is sleeved on the outer surface of the column 2. The limiting holes 83 are evenly distributed at the upper end of the adjustment plate 81 to facilitate adjustment. The inner wall of the limiting hole 83 is an inclined inner wall that is narrower at the top and wider at the bottom. The inner wall of the limiting hole 83 is perpendicular to the vertical... Adjacent annular protrusions 9 are fitted together to quickly clamp the sample tube. The adjustment mechanism 8 also includes a lead screw 84 and a top plate 85. The lead screw 84 is threaded to the inside of the fixing plate 3, and the top plate 85 is fixedly connected to the lower end of the lead screw 84. The lower end of the top plate 85 fits against the upper middle part of the adjustment plate 81, providing a stable foundation for adjustment. The adjustment mechanism 8 also includes a knob 86, which is fixedly connected to the upper end of the lead screw 84 for easy manual operation. It is equipped with a buffer mechanism to prevent damage to the sample tube when placing it. It is suitable for sample tubes of different sizes and can also fix the sample tube.
[0026] The working principle of the PCR sample tube holder provided by this utility model is as follows: When placing PCR sample tubes, the PCR sample tubes are inserted into the sleeve 6 in sequence. When the bottom end of the sleeve 6 contacts the buffer plate 72, the downward impact force of the PCR sample tube causes the buffer plate 72 to move downward, and the sliding column 71 also moves downward. The spring 73 is compressed. At this time, because the downward impact force of the PCR sample tube is small, the elasticity of the spring 73 itself absorbs the downward impact force of the PCR sample tube, effectively preventing the bottom end of the PCR sample tube from directly contacting the bottom wall of the sleeve 6 and being damaged. After all the PCR sample tubes are inserted into the sleeve 6, the knob 86 is turned, and the lead screw 84 also rotates and moves downward, causing the top plate 85 to move downward as well. The top plate 85 continuously presses the adjusting plate 81, causing the adjusting plate 81 to move downward synchronously, and the spring 82 is compressed. The tube is compressed, and then the inner wall of the limiting hole 83 contacts the outer surface of the annular protrusion 9. As the adjusting plate 81 moves down, the inner wall of the limiting hole 83 continuously squeezes the outer surface of the annular protrusion 9, causing the upper end of the sleeve 6 to slowly contract inward until the anti-slip rubber strip on the inner wall of the sleeve 6 contacts the outer surface of the experimental PCR sample tube. At this time, the experimental PCR sample tube is fixed. For experimental PCR sample tubes with smaller diameters, continue to rotate the knob 86 to squeeze the adjusting plate 81 downward. The limiting hole 83 causes the upper end of the sleeve 6 to contract further inward until the anti-slip rubber strip on the inner wall of the sleeve 6 contacts the outer surface of the experimental PCR sample tube again. This completes the placement of experimental PCR sample tubes of different specifications. It is equipped with a buffer mechanism so that the tube body will not be damaged when placing experimental PCR sample tubes. It is suitable for experimental PCR sample tubes of different sizes and can also fix the experimental PCR sample tubes.
[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A PCR sample tube placement rack for experiments, characterized in that: It comprises a base (1), a buffer mechanism (7) and an adjustment mechanism (8); Base (1): columns (2) are provided at the four corners of the upper end thereof, the upper ends of the four columns (2) are fixedly connected to the lower end of a fixing plate (3), the upper end of the fixing plate (3) is provided with evenly distributed avoidance openings, evenly distributed handles (4) are provided around the upper end of the base (1), evenly distributed mounting holes are provided in the middle of the upper end of the base (1), sleeves (6) are fixedly connected inside the mounting holes, the upper end outer surface of the sleeve (6) is matched and installed with the inner wall of the avoidance opening, and the four corners of the bottom end of the base (1) are provided with supporting feet (5); Buffer mechanisms (7): respectively arranged at the inner lower end of the sleeve (6); Adjustment mechanism (8): It is arranged between the fixing plate (3) and the base (1), and the adjustment mechanism (8) is installed in cooperation with the outer surface of the sleeve (6).
2. The PCR sample tube placement rack for experiments according to claim 1, characterized in that: The buffer mechanism (7) comprises a slide post (71), a buffer sheet (72) and a spring (73); the slide post (71) is slidably connected to the inner lower end of the sleeve (6) through a through hole; the buffer sheet (72) is fixedly connected to the upper end of the slide post (71); a spring (73) is provided between the lower end of the buffer sheet (72) and the inner wall of the sleeve (6); and the spring (73) is sleeved on the outer surface of the slide post (71).
3. The PCR sample tube placement rack for experiments according to claim 1, characterized in that: The upper end of the outer surface of the sleeve (6) is provided with evenly distributed avoidance grooves, and the middle part of the outer surface of the sleeve (6) is provided with an annular protrusion (9) which is thin at the top and thick at the bottom.
4. The PCR sample tube placement rack for experiments according to claim 1, characterized in that: The adjustment mechanism (8) comprises an adjustment plate (81), a second spring (82) and a limiting hole (83); the adjustment plate (81) is slidably connected to the outer surfaces of the four columns (2) through sliding holes at four corners; a second spring (82) is provided between the lower end of the adjustment plate (81) and the upper end of the base (1); the second spring (82) is sleeved on the outer surface of the column (2); and the limiting hole (83) is evenly arranged at the upper end of the adjustment plate (81).
5. The PCR sample tube placement rack for experiments according to claim 4, characterized in that: The inner wall of the limiting hole (83) is an inclined inner wall that is narrow at the top and wide at the bottom. The inner wall of the limiting hole (83) is mounted in cooperation with the vertically adjacent annular protrusion (9).
6. The PCR sample tube placement rack for experiments according to claim 4, characterized in that: The adjusting mechanism (8) further comprises a screw rod (84) and a top plate (85), wherein the screw rod (84) is threadedly connected to the middle of the interior of the fixing plate (3), and the top plate (85) is fixedly connected to the lower end of the screw rod (84), and the lower end of the top plate (85) is in contact with the middle of the upper end of the adjusting plate (81).
7. The PCR sample tube placement rack for experiments according to claim 6, characterized in that: The adjustment mechanism (8) further comprises a knob (86), wherein the knob (86) is fixedly connected to the upper end of the screw rod (84).