Cover opening and closing device for PCR (Polymerase Chain Reaction) tube

Abstract

The utility model relates to the technical field of experimental equipment, in particular to a PCR (Polymerase Chain Reaction) tube cover opening and closing device, which consists of a round cake-shaped plastic block and a cylindrical tubular cavity which are integrally formed, and the round cake-shaped plastic block is provided with a curved recess conforming to ergonomics and is convenient to hold and operate. Two parallel anti-skidding convex rings are arranged on the inner wall of the cylindrical tubular cavity, and an anti-skidding ring flange with a rubber cushion is arranged on the outer wall of a tube opening. During use, a user holds the device to tightly buckle the cylindrical tubular cavity and the PCR tube cover, then the tube cover can be opened by one hand according to the lever principle, and the tube cover can be closed by pressing downwards. Through the integrated structural design, labor-saving cover opening and stable cover closing operation of the PCR tube are achieved at the same time, the time cost and the labor cost for opening and closing the PCR tube cover are effectively reduced, and the device is wide in application range, easy and labor-saving to operate, low in cost, not prone to damage and capable of being used for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to biological experiment instrument technical field especially, relates to a PCR pipe uncapping and closing device. BACKGROUND

[0002] PCR technology is one of the most basic and important technologies in the field of molecular biology, and almost all biological and medical research processes need to carry out PCR reaction operation. In PCR experiment, PCR tube is the necessary reaction container, but the single volume of PCR tube is small, and it is difficult to open and close, especially in large batch experiment, manual opening and closing of the operator is easy to cause fatigue, finger soreness and low efficiency problem, which affects the experiment progress and result. The existing PCR tube uncapping device generally only has the function of uncapping, and cannot solve the problem of closing. Therefore, it is necessary to design a PCR tube uncapping and closing device which can open and close the PCR tube cover. CONTENT OF UTILITY MODEL

[0003] The utility model discloses to solve the above-mentioned problems and overcome the prior art deficiencies, a kind of PCR tube uncapping and closing device, the device simple structure, convenient to use, can simultaneously satisfy the two kinds of operation needs of opening and closing PCR tube cover, save experimental time cost and manpower cost.

[0004] In order to realize the above technical purpose, achieve the above technical effect, the utility model provides the following technical scheme:

[0005] A kind of PCR tube uncapping and closing device, including round pie plastic block and cylindrical tubular cavity, characterized by: the round pie plastic block holds at the curved recess that fits finger, the cylindrical tubular cavity is provided with two inner wall ring convex texture and one outer wall ring convex texture, and the bottom of outer wall ring convex is provided with annular rubber soft pad.

[0006] Preferably, the round pie plastic block and cylindrical tubular cavity are integrally formed, and the thickness of the round pie plastic block is greater than the cylindrical tubular cavity.

[0007] Preferably, the total length of the device body is 58.0-62.0mm, and the length of the round pie plastic block is 42.0-45.0mm.

[0008] Preferably, the inner diameter of the cylindrical tubular cavity is 7.5-8.0mm, and the wall thickness of the cylindrical tubular cavity is 0.5-0.8mm.

[0009] Preferably, the two inner wall ring convex textures are 2.0-2.5mm away from the pipe opening, and the other is 0.8-1.0mm apart.

[0010] Preferably, the radial protrusion height of the two inner wall annular raised textures is 0.5-0.8 mm.

[0011] Preferably, the radial protrusion height of the outer wall annular raised texture is 1.0-1.3 mm.

[0012] This utility model has at least the following beneficial effects:

[0013] 1. This utility model comprises a disc-shaped plastic block and a cylindrical tubular cavity, integrally molded, with a stable structure that is not easily broken under stress and is durable. The disc-shaped plastic block is thicker than the cylindrical tubular cavity, allowing it to be placed stably on a flat surface when not in use, while the cylindrical tubular cavity naturally floats on the surface, reducing the possibility of sample contamination due to carrying contaminants. Furthermore, this utility model has a simple structure and is easy to clean.

[0014] 2. This utility model is small in size and easy to operate with one hand. The round plastic block is designed with curved recesses that fit the fingers, which is ergonomic, reduces operator fatigue, and saves manpower.

[0015] 3. The diameter of the cylindrical tubular cavity of this utility model fits perfectly with the PCR tube cap, allowing it to be neatly accommodated. Two radially protruding annular grooves are provided on the inner wall of the cavity near the tube opening for opening the PCR cap. This double-ring design provides multiple pressure points for easy cap opening and also enhances aesthetics.

[0016] 4. The cylindrical tubular cavity of this invention features a radially protruding annular groove on the outer wall of the tube opening, creating a larger force-bearing area. This facilitates pressing the PCR tube cap to close it. The hollow tubular structure is compatible with both commonly used flat-cap and convex-cap PCR tubes, making it widely applicable. Its simple structure and easy operation reduce product processing difficulty and solve the problem of closing PCR tube caps. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a front view structural diagram of the present invention;

[0019] Figure 3 This is a side view of the structure of this utility model;

[0020] Figure 4 This is a frontal cross-sectional schematic diagram of the present invention.

[0021] In the diagram: 1. Circular plastic block; 11. Curved depression; 2. Cylindrical tubular cavity; 3. Inner wall annular protrusion; 31. First inner protrusion away from the tube opening; 32. Second inner protrusion near the tube opening; 4. Outer wall annular protrusion; 41. Circular rubber pad. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0023] See also Figures 1-4 As shown, this utility model provides a PCR tube opening and closing device, comprising:

[0024] The main body of this utility model is formed by connecting a disc-shaped plastic block 1 and a cylindrical tubular cavity 2 at the lower end. The disc-shaped plastic block 1 is thicker than the cylindrical tubular cavity 2. The disc-shaped plastic block 1 has a curved recess 11 that fits the fingers when gripped. The cylindrical tubular cavity 2 is provided with two inner wall circular raised textures 3 and one outer wall circular raised texture 4. The bottom of the outer wall circular raised texture 4 is surrounded by a circular rubber pad 41.

[0025] In this embodiment, the inner wall circular raised texture 3 is set as two lines, with the one closer to the tube opening being the second inner raised texture 32 and the one farther from the tube opening being the first inner raised texture 31. The circular texture setting improves the single-direction opening and closing device into a device that can be opened in multiple directions and at multiple angles, making this PCR opening and closing device more convenient and flexible. The double ring texture setting increases the force points of the PCR tube cap, preventing the PCR tube cap from slipping and falling off during the opening process, ensuring the success rate and efficiency of the tube cap opening. The outer wall circular raised texture 4 protrudes from the tube opening to form a circular surface, providing a larger contact area for pressing the PCR tube cap to close it. The bottom of the outer wall circular raised texture 4 is surrounded by a circular rubber pad 41 to increase friction and prevent the outer wall circular raised texture 4 from slipping off the PCR tube cap during the closing operation. The hollow structure of the cylindrical tubular cavity 2 can be used for both commonly used flat-cap PCR tubes and convex-cap PCR tubes on the market. The methods for opening and closing the PCR tube cap of the present invention are as follows:

[0026] 1. To open the PCR tube cap, when using it, hold the curved recess 11 with your fingers to ensure a stable and comfortable grip. Tilt the cylindrical tube post cavity 2 onto the PCR tube cap so that the PCR tube cap enters the cavity and is fastened between the second inner protrusion 32 near the tube opening and the first inner protrusion 31 away from the tube opening, or fastened onto the first inner protrusion 31 away from the tube opening. This makes the opening end of the PCR tube cap fit tightly with the inner wall circular protrusion texture 3. At this time, the contact point between the inner wall circular protrusion texture 3 and the opening end of the PCR tube cap forms a lever fulcrum. Smoothly pull outward and rotate the cap opener to open the PCR tube cap.

[0027] 2. To close the PCR tube cap, when using it, hold the curved recess 11 with your fingers to ensure a firm and comfortable grip, so that the outer ring protrusion 4 is tightly pressed against the PCR tube cap in the open state. Rotate your wrist to make the device and the PCR tube cap rotate together in the closing direction. At this time, the ring rubber pad 41 at the bottom of the outer ring protrusion 4 contacts the PCR tube cap, generating friction to prevent the tube cap from slipping off. Continue to rotate and press until the PCR tube cap is closed tightly.

[0028] Considering that existing PCR tube opening and closing devices are bulky and complex to operate, this invention integrates a disc-shaped plastic block 1 and a cylindrical tubular cavity 2 at the lower end, resulting in a compact, simple, durable, and portable design. This also reduces manufacturing complexity and facilitates mass production and implementation. Furthermore, the curved recess 11 designed to fit the fingers shifts the force point from the wrist to the fingers during opening and closing, making it more effortless and efficient. Actual samples of this invention have been produced, and practical application testing has demonstrated that the device achieves the expected results. This invention serves both to open and close PCR tube caps and is applicable to common PCR tubes such as flat-capped and convex-capped PCR tubes, thus having a wide range of applications.

[0029] In a preferred embodiment, the disc-shaped plastic block 1 and the cylindrical tubular cavity 2 are integrally formed, and the thickness of the disc-shaped plastic block 1 is greater than that of the cylindrical tubular cavity 2.

[0030] In the above scheme, the disc-shaped plastic block 1 and the cylindrical tubular cavity 2 are connected to each other, which makes the structure stable and durable. When the device is placed on a plane, the cylindrical tubular cavity 2, which is in direct contact with the PCR tube, can be naturally suspended on the plane, reducing the chance of contamination.

[0031] In a preferred embodiment, the total length of the device body is 58.0-62.0 mm, and the length of the disc-shaped plastic block 1 is 42.0-45.0 mm.

[0032] In the above scheme, the device body, the disc-shaped plastic block 1 and the cylindrical pipe pile cavity 2 are small in size, easy to operate with one hand, and labor-saving and portable.

[0033] In a preferred embodiment, the inner diameter of the cylindrical tubular cavity 2 is fitted to the PCR tube cap and is set to 7.5-8.0 mm, and the wall thickness of the cylindrical tubular cavity is 0.5-0.8 mm.

[0034] In the above scheme, the inner diameter of the cylindrical tube pile cavity 2 is set to match the PCR tube cap, which allows the PCR tube cap to tilt and enter the cavity for opening.

[0035] In a preferred embodiment, the two inner wall circular raised textures 3 are arranged such that the one closer to the pipe opening is the second inner protrusion 32, which is 2.0-2.5 mm away from the pipe opening, and the one farther away from the pipe opening is the first inner protrusion 31. The distance between the two inner wall circular raised textures 3 is 0.8-1.0 mm.

[0036] In the above scheme, the setting of the distance between the two inner wall circular raised textures 3 tube openings and the spacing between the two raised textures is conducive to the PCR tube cap being tilted to a suitable angle to enter the cavity and forming a lever fulcrum with the contact between the two inner wall circular raised textures 3, which meets the force requirements of the cap opening operation and makes the cap opening more effortless.

[0037] In a preferred embodiment, the radial protrusion height of the two inner wall annular raised textures 3 is 0.5-0.8 mm.

[0038] In the above scheme, the height of the two inner wall circular raised textures 3 is set to meet the basic requirements for opening the PCR tube cap, while not hindering the free entry and exit of the PCR tube cap.

[0039] In a preferred embodiment, the radial protrusion height of the outer wall annular raised texture 4 is 1.0-1.3 mm.

[0040] In the above scheme, the height of the outer wall circular raised texture 4 forms a circular plane, which increases the contact area with the PCR tube cap during the cap-closing operation, making the contact with the PCR tube cap tighter and facilitating the pressing action.

[0041] 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 tube decapper, the device body comprising a circular cake-shaped plastic block and a cylindrical tubular cavity, characterized in that: The round cake-shaped plastic block holds the curved recess that fits the finger, the cylindrical tubular cavity is provided with two inner wall ring convex textures and one outer wall ring convex texture, and the bottom of the outer wall ring convex texture is surrounded by a ring-shaped rubber cushion.

2. The PCR tube cap opening and closing device according to claim 1, characterized in that, The round cake-shaped plastic block and the cylindrical tubular cavity are integrally formed, and the thickness of the round cake-shaped plastic block is greater than that of the cylindrical tubular cavity.

3. The PCR tube decapper according to claim 1, wherein, The total length of the device body is 58.0-62.0mm, and the length of the round cake-shaped plastic block is 42.0-45.0mm.

4. The PCR tube cap opening and closing device according to claim 1, characterized in that, The inner diameter of the cylindrical tubular cavity fits the PCR tube cover, which is set to 7.5-8.0mm, and the wall thickness of the cylindrical tubular cavity is 0.5-0.8mm.

5. The PCR tube decapper according to claim 1, wherein, The two inner wall ring convex textures close to the pipe opening are the second inner convex, which is 2.0-2.5mm away from the pipe opening, and the two inner wall ring convex textures away from the pipe opening are the first inner convex, and the distance between the two inner wall ring convex textures is 0.8-1.0mm.

6. The PCR tube decapper according to claim 1, wherein, The two inner wall ring convex textures protrude radially by a height of 0.5-0.8mm.

7. The PCR tube decapper according to claim 1, wherein, The one outer wall ring convex texture protrudes radially by a height of 1.0-1.3mm.

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