CN217733059U - PCR tube cap easy to split - Google Patents

Abstract

The utility model discloses a PCR tube cap of easy split, including being used for the lid to detain bottom and the fastening stopper at PCR tube upper end opening part. The bottom cover comprises a first round pipe, a blocking layer used for blocking the first round pipe is arranged at the lower end of the first round pipe, a bottom cover cap is arranged at the top of the first round pipe, a fastening ring is arranged on the outer wall of the lower end of the first round pipe and above the blocking layer, and the outer diameter of the fastening ring is just equal to the inner diameter of the upper end of the PCR pipe. The fastening plug wraps the second round pipe and the fastening plug cap. The outer wall of the lower end of the second circular tube is provided with a second convex ring, the outer diameter of the second convex ring is larger than the inner diameter of the first circular tube, when the bottom of the second circular tube is abutted against the sealing layer, the second convex ring is just positioned at the inner wall of the first circular tube where the fastening ring is positioned, and a second circular tube with a certain length is left between the fastening plug cap and the bottom cap. The utility model discloses a design into the tube cap the compound mode of bottom and fastening stopper, can unload fastening force before making the tube cap split, let the experimenter can split easily and go out the tube cap, prevent to exert oneself too violently to lead to liquid to leak.

Description

PCR tube cap easy to split

Technical Field

The utility model relates to a biomedical experimental apparatus technical field, concretely relates to PCR tube cap of easy split.

Background

In the biological experiment process, PCR (polymerase chain reaction) row tubes or PCR plates are often used in batches, and the PCR row tubes or the PCR plates need to be covered in the using process. For example, the patent discloses a medical eight-tube (PCR tube) with the publication number CN307074153S and the publication date of 2022, 1 month and 18 days in chinese patent literature, which discloses a commonly used PCR tube. For another example, the patent document "a novel PCR tube cap" discloses CN203462053U, and the publication date is 3/5/2014, which discloses a tube cap for plugging PCR tubes in a row. When closing cap allies oneself with calandria lid, adopt the finger to press ally oneself with calandria lid usually, oppress the lateral wall of pipe shaft opening part through the retaining ring on the calandria lid and form the clamp force to be used for the shutoff, nevertheless, simultaneously, because the existence of clamp force, under the present structure, can only break off with the hands carefully when wanting to uncap for the retaining ring slides out in following the pipe shaft, and is very inconvenient, and takes place the accident that intraductal liquid popped out easily. Therefore, it is necessary to design a PCR tube cover which is easy to be disassembled on the basis of the above two patents.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PCR tube cap of easy split to solve the problem of description in the background art, designed a structure that can demolish the tube cap from the pipe shaft easily, prevent to demolish the condition emergence that the in-process both hands too hard lead to intraductal liquid to pop out.

The technical scheme of the utility model is realized like this:

the utility model provides a PCR tube cap of easy split, is including being used for the lid to detain bottom and the fastening stopper at PCR tube upper end opening part, and the bottom includes first pipe, and first pipe upper end opening and inside lower extreme are equipped with the shutoff layer that is used for shutoff first pipe, and the first pipe top is stretched to the evagination and is formed the bottom cap that is used for preventing first pipe from imbedding into PCR intraductal completely, and the evagination of first pipe lower extreme outer wall forms the lock ring, and the lock ring is in the top of shutoff layer, the external diameter of lock ring just in time equals the interior pipe diameter of PCR pipe upper end, and the fastening stopper includes the second pipe that is used for stuffing in first pipe and the fastening stopper cap of fixed mounting at second pipe top, and the evagination of second pipe lower extreme outer wall forms the second bulge loop, and the external diameter of second bulge loop is greater than the internal diameter of first pipe, and when second pipe bottom supported and pushed up the shutoff layer, the second bulge loop just in time is in time in the inner wall department that the first pipe position of lock ring place, still leaves the second pipe of certain length between fastening stopper cap and the bottom. The above parts are all made of elastic plastics.

The further technical scheme is that the inner wall of the first round pipe is also convexly extended to form a first convex ring, and the first convex ring is positioned above the fastening ring.

The further technical proposal is that two opposite ends of the fastening plug cap protrude outwards to form a grab handle.

The further technical scheme is that the fastening plug cap and the second circular tube are integrally formed.

The further technical scheme is that the blocking layer is arranged at the bottom of the first circular tube.

The further technical scheme is that the elastic plastic is polypropylene plastic.

The beneficial effects of the utility model reside in that:

1. through setting up bottom and fastening stopper for the bottom can unload the fastening force before the split, makes the bottom split time become easy, can not take place with the condition that the intraductal liquid of power excessively hurry leads to popped out.

2. Through setting up and grabbing handle and bottom cap, when carrying out the split operation, one hand grabs PCR pipe, and another hand grabs with the finger middle part and grabs the handle, and the fingertip withstands and withstands bottom cap, and the fastening stopper is upwards carried out to the finger power, and bottom cap provides an ascending holding power for the fingertip, and the transmission is grabbed handle department and just becomes for lifting force, and grabs the handle and provides a decurrent thrust for bottom cap through the finger again, and under the resultant force of two power, the fastening stopper can be pulled out easily. When the fastening plug is pulled out, the bottom cap is pushed downwards by fingers, so that the bottom cap is prevented from being taken out when the fastening plug is pulled out.

Drawings

Fig. 1 is a general schematic diagram of the present invention;

FIG. 2 is a front sectional view of a PCR tube with a cap detached;

FIG. 3 is a front sectional view of the PCR tube in a state where the tube cap is fitted.

In the figure, 1, a PCR tube, 2, a bottom cover, 3, a fastening plug, 4, a first round tube, 5, a bottom cover cap, 6, a sealing layer, 7, a fastening ring, 8, a first convex ring, 9, a second round tube, 10, a fastening plug cap, 11, a second convex ring, 12, a deformation part, 13 and a grasping handle.

Detailed Description

In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, an easily detachable PCR tube cap includes a bottom cap 2 made of polypropylene material and a fastening plug 3. The bottom cover 2 comprises a first circular tube 4, the upper end of the first circular tube 4 is open, a sealing layer 6 for sealing the first circular tube 4 is integrally formed at the bottom of the first circular tube 4, and the top of the first circular tube 4 protrudes outwards to form a bottom cover cap 5. The bottom cover 2 is buckled at the upper opening of the PCR tube 1, the first round tube 4 is positioned inside the PCR tube 1, and the bottom cover cap 5 is larger than the upper opening of the PCR tube 1 to prevent the bottom cover 2 from being completely inserted into the PCR tube 1.

Under the design that the outer wall of the bottom of the first round tube 4 protrudes outwards to form the fastening ring 7, the fastening ring 7 is arranged above the blocking layer 6, and the outer diameter of the fastening ring 7 is just equal to the inner tube diameter of the upper end of the PCR tube 1, when the bottom cover 2 is inserted into the PCR tube 1, the stress between the first round tube 4 and the PCR tube 1 is small, and the first round tube can be easily pulled out.

The fastening plug 3 comprises a second circular tube 9 used for being plugged into the first circular tube 4 and a fastening plug cap 10 integrally formed at the top of the second circular tube 9, the outer wall of the bottom of the second circular tube 9 protrudes outwards to form a second convex ring 11, the outer diameter of the second convex ring 11 is larger than the inner diameter of the first circular tube 4, when the bottom of the second circular tube 9 is abutted to the plugging layer 6, the second convex ring 11 is just positioned at the inner wall of the position of the first circular tube 4 where the fastening ring 7 is positioned, and the second circular tube 9 with the length of 3-5 mm is left between the fastening plug cap 10 and the bottom cap 5. So after second pipe 9 inserts first pipe 4, second bulge loop 11 pushes up first pipe 4 from inside to outside for tight retaining ring 7 takes place to deform, and the external diameter grow makes tight retaining ring 7 compress tightly the inner wall of PCR pipe 1, makes PCR pipe 1 relative position produce deformation position 12, and deformation position 12 produces the clamp force to first pipe 4, prevents that first pipe 4 from extracting, also lets tight retaining ring 7 and shutoff layer 6 seal PCR pipe 1 together.

Specifically, the inner wall of the first circular tube 4 is further protruded to form a first convex ring 8, the first convex ring 8 is located above the fastening ring 7, and after the second circular tube 9 is inserted into the first circular tube 4, the first convex ring 8 is located above the second convex ring 11 to prevent the second circular tube 9 from being easily separated from the first circular tube 4.

In particular, the opposite ends of the closure cap 10 project outwardly to form gripping handles 13, which gripping handles 13 are able to provide a force-taking point when the closure 3 is extracted.

The utility model discloses the theory of operation:

when the device is used, when plugging operation is carried out, the bottom cover 2 is firstly covered and buckled in the PCR tube 1, and after the bottom cover is buckled to the bottom, the bottom cover cap 5 is left outside the PCR tube 1. At this moment, the fastening plug 3 is inserted into the first round tube 4, and after the first round tube is inserted to the bottom, the second convex ring 11 pushes the first round tube 4 outwards from the inside, so that the fastening ring 7 deforms, the outer diameter of the fastening ring becomes large, the fastening ring 7 compresses the inner wall of the PCR tube 1, the PCR tube 1 generates clamping force on the first round tube 4, the first round tube 4 is prevented from being pulled out, and the fastening ring 7 and the plugging layer 6 are also used for sealing the PCR tube 1 together.

When the separation operation is carried out, one hand grasps the PCR tube 1, the other hand grasps the grasping handle 13 by the middle part of the finger, the finger tip abuts against the bottom cover cap 5, the finger is forcefully lifted upwards to lift the fastening plug 3, the bottom cover cap 5 provides an upward supporting force for the finger tip, the upward supporting force is transmitted to the grasping handle 13 to form a lifting force, the grasping handle 13 provides a downward pushing force for the bottom cover cap 5 through the finger, and the fastening plug 3 can be easily pulled out under the resultant force of the two forces. The bottom cap 5 is forcibly pushed down by fingers while the fastening plug 3 is being pulled out, preventing the bottom cap 2 from being taken out when the fastening plug 3 is pulled out. When the plug 3 is not fastened, the bottom cap 2 can be easily pulled out of the PCR tube 1, and the situation that the liquid in the tube is ejected due to the excessive force is avoided.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an easy PCR tube cap of split which characterized in that: the PCR detection device comprises a bottom cover (2) and a fastening plug (3) which are used for covering and buckling an opening at the upper end of a PCR tube (1), wherein the bottom cover (2) comprises a first circular tube (4), a plugging layer (6) used for plugging the first circular tube (4) is arranged at the upper end opening and the inner lower end of the first circular tube (4), the top of the first circular tube (4) outwards protrudes to form a bottom cover cap (5) used for preventing the first circular tube (4) from being completely embedded into the PCR tube (1), the outer wall of the lower end of the first circular tube (4) outwards protrudes to form a fastening ring (7), the fastening ring (7) is arranged above the plugging layer (6), the outer diameter of the fastening ring (7) is just equal to the inner tube diameter at the upper end of the PCR tube (1), the fastening plug (3) comprises a second circular tube (9) used for plugging the first circular tube (4) and a fastening plug cap (10) fixedly installed at the top of the second circular tube (9), the outer wall of the lower end of the second circular tube (9) outwards protrudes to form a second convex ring (11), the outer wall of the second circular tube (11) is larger than the inner diameter of the first circular tube (4), the inner wall of the second circular tube (4), the second circular tube (9), the fastening plug (7) is positioned between the inner wall (7) and the bottom of the bottom cover cap (5), and the second circular tube (7), and the bottom cover cap (7) when the second circular tube (5) is positioned at a certain length of the bottom cover cap (5), the above parts are all made of elastic plastics.

2. The PCR tube cover easy to disassemble as claimed in claim 1, wherein: the inner wall of the first round pipe (4) is also convexly extended to form a first convex ring (8), and the first convex ring (8) is positioned above the fastening ring (7).

3. The PCR tube cover easy to disassemble as claimed in claim 2, wherein: two opposite ends of the fastening plug cap (10) protrude outwards to form a grabbing handle (13).

4. An easily detachable PCR tube cap according to claim 3, wherein: the fastening plug cap (10) and the second round pipe (9) are integrally formed.

5. An easily detachable PCR cap according to any one of claims 2-4, wherein: the blocking layer (6) is arranged at the bottom of the first round pipe (4).

6. An easily detachable PCR tube cap according to claim 5, wherein: the elastic plastic is polypropylene plastic.

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