Anti-uncovering structure of microcentrifuge tube

Abstract

The utility model relates to a kind of trace centrifugal tube anti-uncovering structure, the utility model effectively solves the problem that traditional centrifugal tube structure will make pipe cover loose or accidental opening when high-speed centrifugation, and the sealing reliability is lower.The trace centrifugal tube anti-uncovering structure is matched through annular lock groove and lock block mechanism, can rely on centrifugal force self-locking mechanism to make centrifugal speed faster, and the locking force of pipe cover is greater, to eliminate the possibility of accidental springing of pipe cover when high-speed centrifugation from physical principle, provide the reliability that traditional buckle structure cannot compare;And operation process is smooth and fast, especially suitable for the experimental scene that needs to frequently, quickly operate a large number of samples, significantly improve work efficiency;And the structure is realized mechanical locking at the same time, through main sealing plug and pipe cover to seal inside and outside of pipe mouth, constitutes double sealing system, can effectively prevent sample evaporation or leakage, especially suitable for long-term storage of volatile or high-value sample.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuge tube structure technology, specifically relating to a micro centrifuge tube anti-opening structure. Background Technology

[0002] Microcentrifuge tubes are essential consumables in molecular biology, biochemistry, and medical testing, and are widely used for operations such as micro-sample storage, centrifugation precipitation, and mixing. Current microcentrifuge tubes typically consist of a tube body and a cap connected by a hinge, with the seal relying on a simple snap-fit ​​between a protrusion on the cap edge and a groove on the outside of the tube opening.

[0003] This traditional structure has significant inherent defects: First, during high-speed centrifugation, the huge centrifugal force acts on the cap, which may cause the plastic buckle to deform or vibrate momentarily, causing the cap to open or loosen unexpectedly. This not only causes the loss of valuable samples and cross-contamination, but may also lead to biosafety risks of aerosol diffusion, and even damage to expensive centrifuge equipment due to unbalanced centrifugation. In addition, after repeated use, the locking force of the traditional buckle structure will decrease due to material fatigue, affecting the sealing reliability of long-term use. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a microcentrifuge tube anti-opening cap structure. This microcentrifuge tube anti-opening cap structure eliminates the possibility of the cap accidentally popping open during high-speed centrifugation, providing a reliability that traditional snap-fit ​​structures cannot match. Moreover, the operation process is smooth and quick, making it particularly suitable for experimental scenarios that require frequent and rapid handling of a large number of samples, significantly improving work efficiency.

[0005] A microcentrifuge tube anti-opening structure includes a centrifuge tube and a tube cap. The centrifuge tube has an annular guide slope on the top side near the tube opening, and an annular locking groove is opened below the annular guide slope. The tube cap seals the tube opening at the top of the centrifuge tube, and a main sealing plug that can be adapted to the inner diameter of the centrifuge tube is fixedly connected to its lower surface. Both sides of the tube cap are fixedly connected to sleeves, and the sleeves are provided with a tensioning mechanism. The end of the tensioning mechanism away from the tube cap is provided with a locking block mechanism that can lock with the annular locking groove.

[0006] Preferably, the inner top wall of the annular locking groove is a vertical locking surface that is perpendicular to the axis of the centrifuge tube, and the vertical locking surface engages with the locking block mechanism and can withstand the upward pulling force generated by centrifugal force, thereby achieving mechanical self-locking.

[0007] Preferably, the inner bottom wall of the annular locking groove is a smooth outward and downward inclined surface that ensures the locking block mechanism can smoothly slide out of the annular locking groove.

[0008] Preferably, the locking mechanism includes a locking block, a vertical locking tongue, and a lever. The top of the locking block near the outside of the centrifuge tube is a slope that is complementary to the annular guide slope. The vertical locking tongue is fixedly connected to the middle of the locking block and is complementary to the inside of the annular locking groove. The vertical locking tongue and the vertical locking surface in the annular locking groove lock each other. The lever is fixedly connected to the bottom of the locking block on the side away from the centrifuge tube.

[0009] Preferably, the tensioning mechanism includes a tension spring and a pull rod. The top end of the tension spring is fixedly connected to the inner top wall of the sleeve, and the pull rod is fixedly connected to the bottom end of the tension spring. The pull rod passes through the inside of the sleeve, and a locking block is fixedly connected to the bottom end of the pull rod.

[0010] Preferably, the main sealing plug is inserted into the opening at the top of the centrifuge tube and completely seals the opening, while the tube cap and the main sealing plug are respectively sealed around and inside the opening at the top of the centrifuge tube.

[0011] The beneficial effects of the above technical solution are as follows:

[0012] This microcentrifuge tube anti-opening cap structure, through the cooperation of annular locking groove and locking block mechanism, relies on centrifugal force self-locking mechanism. The faster the centrifugation speed, the greater the locking force of the cap, thus physically eliminating the possibility of the cap accidentally popping open during high-speed centrifugation. It provides a reliability that traditional snap-fit ​​structures cannot match. Moreover, the operation process is smooth and quick, making it particularly suitable for experimental scenarios that require frequent and rapid handling of large numbers of samples, significantly improving work efficiency. In addition to achieving mechanical locking, this structure forms a tight seal by inserting the main sealing plug into the tube opening, which, combined with the cap's seal on the outside of the tube opening, constitutes a double sealing system. The locking block mechanism further locks the cap, effectively preventing sample evaporation or leakage. It is especially suitable for long-term storage of volatile or high-value samples and is more convenient for operations such as micro-storage and centrifugal precipitation of samples. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the pipe cap of this utility model in the open state;

[0015] Figure 3 This is a schematic diagram of the overall cross-sectional state of this utility model;

[0016] Figure 4 This is a schematic diagram of the disassembled state of this utility model;

[0017] Figure 5 This is a schematic diagram of the disassembled state of the tensioning mechanism of this utility model.

[0018] In the diagram: 1. Centrifuge tube; 2. Tube cap; 3. Annular guide ramp; 4. Annular locking groove; 5. Main sealing plug; 6. Sleeve; 7. Tensioning mechanism; 701. Tension spring; 702. Pull rod; 8. Locking block mechanism; 801. Locking block; 802. Vertical locking tongue; 803. Paddle. Detailed Implementation

[0019] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 5 The embodiments are described in detail below.

[0020] This embodiment provides a microcentrifuge tube anti-opening structure, as shown in the attached figure. Figure 1 and 2 As shown, the device includes a centrifuge tube 1 and a tube cap 2. An annular guide ramp 3 is located on the top of the centrifuge tube 1 near the tube opening, and an annular locking groove 4 is located below the annular guide ramp 3. Specifically, the inner top wall of the annular locking groove 4 is a vertical locking surface perpendicular to the axis of the centrifuge tube 1. This vertical locking surface engages with the locking block mechanism 8 and can withstand the upward pulling force generated by centrifugal force, achieving mechanical self-locking. The inner bottom wall of the annular locking groove 4 is a smooth outward and downward ramp that ensures the locking block mechanism 8 slides smoothly out of the annular locking groove 4. The bottom of the locking block 801 near the centrifuge tube 1 is a ramp that complements the smooth ramp of the inner bottom wall of the annular locking groove 4. When the locking block 801 moves downward, it can slide directly out of the annular locking groove 4 through the ramp, thereby disengaging the vertical locking surface within the annular locking groove 4. The bottom of the locking block 801 is then moved away from the centrifuge tube 1 by the lever 803, facilitating the separation of the locking block mechanism 8 from the centrifuge tube 1, thus making it easier to open the tube cap 2.

[0021] The cap 2 is connected to the top of the side of the centrifuge tube 1 by a connecting strap, so that the cap 2 is always connected to the centrifuge tube 1. The cap 2 covers the top opening of the centrifuge tube 1 and a main sealing plug 5 that is compatible with the inner diameter of the centrifuge tube 1 is fixedly connected to its lower surface. In this utility model, the main sealing plug 5 is inserted into the top opening of the centrifuge tube 1 and completely seals the opening. The cap 2 and the main sealing plug 5 are respectively sealed on the outside and inside of the top opening of the centrifuge tube 1, forming a double sealing system, which effectively prevents the sample from evaporating or leaking, and is especially suitable for long-term storage of volatile or high-value samples.

[0022] Both sides of the pipe cap 2 are fixedly connected to sleeves 6, and the inside of the sleeves 6 is provided with a tensioning mechanism 7, as detailed in the attached document. Figure 5As shown, the tensioning mechanism 7 includes a tension spring 701 and a pull rod 702. The top end of the tension spring 701 is fixedly connected to the inner top wall of the sleeve 6, and the pull rod 702 is fixedly connected to the bottom end of the tension spring 701. The pull rod 702 passes through the inside of the sleeve 6, and the locking block 801 is fixedly connected to the bottom end of the pull rod 702. The connection between the locking block 801 and the pull rod 702 has a certain restorable deformation capability, which enables the locking block 801 to deform to a certain extent and return to its original position when subjected to external force, ensuring that the locking block 801 can always be pressed against the annular locking groove 4. The tension spring 701 provides a stable re-tensioning force for the locking block 801, ensuring the consistency of the locking mechanism 8's operation and its long-term durability. When the vertical locking tongue 802 on the locking block 801 is locked to the vertical locking surface in the annular locking groove 4, the tension spring 701 can provide an upward tensioning force to the locking block 801 and the vertical locking tongue 802, making the seal between the tube cap 2 and the centrifuge tube 1 more secure.

[0023] The end of the stretching mechanism 7 furthest from the tube cap 2 is equipped with a locking block mechanism 8 that can be locked with the annular locking groove 4, as detailed in the attached diagram. Figure 3 and 4 As shown, the locking mechanism 8 in this utility model includes a locking block 801, a vertical locking tongue 802, and a lever 803. The top of the locking block 801 near the outside of the centrifuge tube 1 is a slope that is complementary to the annular guide slope 3. The vertical locking tongue 802 is fixedly connected to the middle of the locking block 801 and is complementary to the inside of the annular locking groove 4. The vertical locking tongue 802 and the vertical locking surface in the annular locking groove 4 lock each other tightly. When the centrifuge starts, the huge upward pulling force generated will make the vertical locking tongue 802 in the locking mechanism 8 mesh more tightly with the vertical locking surface in the annular locking groove 4. This "centrifugal force self-locking" mechanism makes the locking force greater the faster the centrifugation speed, thereby eliminating the possibility of the tube cover 2 accidentally popping open during high-speed centrifugation from a physical principle, providing a reliability that traditional buckle structures cannot match.

[0024] The lever 803 is fixedly connected to the bottom of the locking block 801 on the side away from the centrifuge tube 1. When the tube cover 2 needs to be closed, simply press down the tube cover 2 and press down the levers 803 on both sides, so that the locking block 801 is automatically positioned and locked in the annular locking groove 4 under the guidance of the annular guide slope 3. When the cover needs to be opened, press down the levers 803 on both sides, and the locking block 801 will move diagonally downward under the guidance of the smooth slope of the bottom wall of the annular locking groove 4, so that the vertical locking tongue 802 is separated from the annular locking groove 4, and the tube cover 2 can be opened.

[0025] In summary, the steps for using this microcentrifuge tube anti-opening cap structure are as follows:

[0026] 1. After injecting the sample into centrifuge tube 1, put the tube cap 2 on the opening of centrifuge tube 1, ensuring that the main sealing plug 5 on the lower surface of the tube cap 2 is aligned with the opening. Press down on the main body of the tube cap 2 so that the tube cap 2 seals the opening of centrifuge tube 1. The inclined surfaces at the bottom of the locking blocks on both sides can abut against the edge of the opening and be squeezed to both sides. Then slide over the edge of the opening and lock into the annular guide inclined surface 3.

[0027] 2. Then, use your thumb and forefinger to press down on the levers 803 on both sides of the locking block mechanism 8 of the tube cover 2. Under the tension of the tension spring 701, the locking blocks 801 on both sides will be pressed down until the vertical locking tongues 802 on the sides of the locking blocks 801 are engaged in the annular locking groove 4. Under the tension of the tension spring 701, the vertical locking tongues 802 are tightly engaged with the vertical locking surface of the inner top wall of the annular locking groove 4, achieving mechanical locking. Under the huge upward pulling force generated by high-speed centrifugation, the vertical locking tongues 802 and the vertical locking surface of the annular locking groove 4 will engage even more tightly. This "centrifugal force self-locking" effect ensures that the tube cover 2 will not be accidentally opened during the entire centrifugation process, and the safety is extremely high.

[0028] 3. After centrifugation, press down on the two sides of the lever 803 again with your thumb and forefinger to force the locking block 801 to move downward against the tension of the tension spring 701. The smooth inclined surface of the bottom wall of the annular locking groove 4 will guide the locking block 801 to move downward at an angle, so that the vertical locking tongue 802 is completely disengaged from the annular locking groove 4, releasing the mechanical locking state. Then you can easily lift the tube cover 2 to complete the opening operation.

[0029] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A microcentrifuge tube anti-opening structure, comprising a centrifuge tube (1) and a cap (2), characterized in that: The centrifuge tube (1) has an annular guide slope (3) on the side near the tube opening at the top, and an annular locking groove (4) is provided below the annular guide slope (3). The tube cover (2) is sealed at the tube opening at the top of the centrifuge tube (1), and a main sealing plug (5) that can be matched with the inner diameter of the centrifuge tube (1) is fixedly connected to its lower surface. Both sides of the tube cover (2) are fixedly connected to sleeves (6), and a tensioning mechanism (7) is provided inside the sleeves (6). The end of the tensioning mechanism (7) away from the tube cover (2) is provided with a locking block mechanism (8) that can lock with the annular locking groove (4).

2. The anti-opening structure for a microcentrifuge tube according to claim 1, characterized in that: The inner top wall of the annular locking groove (4) is a vertical locking surface that is perpendicular to the axis of the centrifugal tube (1), and the vertical locking surface meshes with the locking block mechanism (8) and can withstand the upward pulling force generated by the centrifugal force, thereby realizing mechanical self-locking.

3. The anti-opening structure for a microcentrifuge tube according to claim 1, characterized in that: The inner bottom wall of the annular locking groove (4) is a smooth, outward and downward inclined surface that ensures that the locking block mechanism (8) can slide smoothly out of the annular locking groove (4).

4. The anti-opening structure for a microcentrifuge tube according to claim 2, characterized in that: The locking mechanism (8) includes a locking block (801), a vertical locking tongue (802), and a lever (803). The top of the locking block (801) near the outside of the centrifuge tube (1) is a slope that is complementary to the annular guide slope (3). The vertical locking tongue (802) is fixedly connected to the middle of the locking block (801) and is complementary to the inside of the annular locking groove (4). The vertical locking tongue (802) and the vertical locking surface in the annular locking groove (4) are locked together. The lever (803) is fixedly connected to the bottom of the locking block (801) on the side away from the centrifuge tube (1).

5. The anti-opening structure for a microcentrifuge tube according to claim 1, characterized in that: The tensioning mechanism (7) includes a tension spring (701) and a pull rod (702). The top end of the tension spring (701) is fixedly connected to the inner top wall of the sleeve (6), and the pull rod (702) is fixedly connected to the bottom end of the tension spring (701). The pull rod (702) passes through the inside of the sleeve (6), and the locking block (801) is fixedly connected to the bottom end of the pull rod (702).

6. The anti-opening structure for a microcentrifuge tube according to claim 1, characterized in that: The main sealing plug (5) is inserted into the opening at the top of the centrifuge tube (1) and completely seals the opening. The tube cap (2) and the main sealing plug (5) are respectively sealed around and inside the opening at the top of the centrifuge tube (1).

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