CN201519582U

CN201519582U - Centrifuge tube used in laboratory

Info

Publication number: CN201519582U
Application number: CN2009202355845U
Authority: CN
Inventors: 何川
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-13
Filing date: 2009-10-13
Publication date: 2010-07-07
Anticipated expiration: 2019-10-13

Abstract

The utility model discloses a centrifuge tube used in a laboratory, which belongs to the technical field of apparatus in laboratories. The centrifuge tube is made up of a pipe body and an end cover; one end of the pipe body is closed, and the other end thereof is opened; a cover ring with an outer diameter in close-fitting with the inner diameter of the pipe body is extended from the surface of the end cover facing to the pipe body, an elastic connecting bend connected with the open end of the pipe body is extended from one end deviating from the surface of the pipe body, and a cover ledge is extended from the other end thereof; a bulge is formed on the outer wall at the open end of the pipe body and in a position opposite to the cover ledge; and a hook tooth clamped with the bulge is arranged at the cover ledge. Therefore, when the upper cover is covered, and the cover ring is enabled to be clamped into the pipe body, the hook tooth at the cover ledge is clamped with the bulge on the pipe wall, so as to resist the internal pressure of the pipe body and keep hermetic sealing always. When the cover ledge is propped in the direction of opening the end cover, the micro-deformation of the end cover enables the hook tooth to be separated from the bulge, so that the opening of the end cover is prevented from being hindered.

Description

The laboratory centrifuge tube

Technical field

The utility model relates to a kind of experimental article, and especially a kind of laboratory centrifuge tube belongs to the labware technical field.

Background technology

Centrifuge tube is breadboard common tool, makes with plastic injection-moulded usually, and an end of its body is a blind end, and the other end is an openend, and this openend is stamped end cap.The bezel ring, of external diameter and internal diameter of tube body close-fitting is extended in the lower surface of end cap.One end of end cap extends the elasticity that links to each other with the body openend and is connected curvedly, bends the relative other end and extends and cover eaves with connecting.

During use, testing liquid added body after, cover end cap, keep sealing thereby make bezel ring, snap in body, afterwards centrifuge tube is inserted in centrifugation on the centrifuge, after taking off, cover eaves towards opening the pushing and pressing of end cap direction, can open end cap easily by the perk active force.

This type of centrifuge tube in use except needs carry out centrifugally operated, also usually needs to be used to carry out other experimental procedures such as water-bath.When water-bath, along with temperature raises, the interior pressure of sealed tube body that fills testing liquid can constantly rise, and the possibility of result surpasses the close-fitting active force of body and end cap, makes the end cap unlatching, thereby causes testing liquid to leak.

The utility model content

The purpose of this utility model is: the problem at above-mentioned prior art exists proposes a kind of laboratory centrifuge tube that can effectively avoid end cap to be opened by interior pressure.

In order to reach above purpose, laboratory of the present utility model is made of body and end cap with centrifuge tube; One end of described body is a blind end, and the other end is an openend; Described end cap extends the bezel ring, of external diameter and internal diameter of tube body close-fitting towards the surface of body, an end that deviates from the body surface extends the elasticity that links to each other with the body openend and is connected and bends, and the other end extends and covers eaves; Its improvements are: described body openend outer wall covers the eaves place relatively and has projection, and described lid eaves place has the tooth that colludes that can engage with described projection.

Like this, when covering end cap, when making bezel ring, snap in the body, the tooth that colludes on the lid eaves will engage with the projection on the tube wall, presses thereby can resist in the body, remains sealing.Present dynasty opens the end cap direction and pushes against when covering eaves, and under the perk effect, little distortion of end cap can make colludes engaging of tooth disengaging and projection, does not therefore hinder opening of end cap.

The utility model further improves, and described projection is divided into left and right two parts, and the spacing of left and right two projectioies is up-narrow and down-wide, described collude tooth be with about protruding spacing match up-narrow and down-wide trapezoidal.Therefore, cover end cap after, lid colluding tooth and will be stuck between the left and right projection on the eaves; Give birth to when cutting down output in the body end cap up during the trend of jack-up, is colluded and understands wedging more between tooth and its left and right projection, thereby guarantee that end cap can not held by interior bearing down on one, thoroughly avoid testing liquid to leak.

The utility model further improves, and the described inner surface that colludes tooth tilts towards the bezel ring, direction, therefore when covering end cap, colludes tooth and can produce and make the tight trend on body of end cap lid, more helps guaranteeing sealing.And present dynasty opens end cap direction pushing and pressing when cover eaves, and little distortion of end cap makes colludes tooth and break away from easily and protruding engaging, and makes things convenient for opening of end cap.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the uncap structural representation of state of embodiment of the utility model.

Fig. 2 is the left view of Fig. 1.

The specific embodiment

Embodiment one

The laboratory centrifuge tube of present embodiment as depicted in figs. 1 and 2, is mainly made by body 2 and end cap 1 injection moulding.The lower end of body 2 is a blind end, and the upper end is an openend, and the openend periphery has the limit 2-2 of enhancing.End cap 1 extends the bezel ring, 1-3 of external diameter and internal diameter of tube body close-fitting towards the surface of body, and this surface perimeter forms enhancing flange 1-4; An end that deviates from the body surface extends the elasticity that links to each other with the body openend and is connected and bends 3, and the other end extends and covers eaves 1-2.Body 2 openend outer walls cover the eaves place relatively and have the protruding 2-1 that distributes about a pair of, lid eaves place then have can engage with protruding 2-1 collude tooth 1-1.Spacing between the two protruding 2-2 is up-narrow and down-wide, collude tooth 1-1 then be with about protruding spacing match up-narrow and down-wide trapezoidal.When covering end cap 1, be in position shown in the dotted line among Fig. 1 and Fig. 2, bezel ring, 1-3 snaps in the body 2, covers colluding tooth 1-1 and will be stuck between the two protruding 2-1 on the tube wall and engage on the eaves 1-2 simultaneously, is in 1-1 ' position among Fig. 1 and Fig. 2.Because up-narrow and down-wide wedging structure is arranged, therefore in the testing liquid expanded by heating produces in the body, press, when end cap 1 occurs by the trend of jack-up up, collude meeting wedging more between tooth and the left and right projection, thereby guarantee that end cap 1 can not held by interior bearing down on one, thoroughly avoid testing liquid to leak.

In addition, as shown in Figure 2, the inner surface that colludes tooth 1-1 tilts towards bezel ring, 1-3 direction, therefore when covering end cap 1, colludes tooth 1-1 and can produce and make the tight trend on body 2 of end cap 1 lid, more helps guaranteeing sealing.

When needs were opened end cap, eaves 1-2 was covered in pushing and pressing, and little distortion of end cap makes colludes engaging of tooth disengaging and projection, thereby end cap easily can be opened.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. a laboratory centrifuge tube is made of body and end cap; One end of described body is a blind end, and the other end is an openend; Described end cap extends the bezel ring, of external diameter and internal diameter of tube body close-fitting towards the surface of body, an end that deviates from the body surface extends the elasticity that links to each other with the body openend and is connected and bends, and the other end extends and covers eaves; It is characterized in that: described body openend outer wall covers the eaves place relatively and has projection, and described lid eaves place has the tooth that colludes that can engage with described projection.

2. laboratory according to claim 1 centrifuge tube is characterized in that: described projection is divided into left and right two parts, and the spacing of left and right two projectioies is up-narrow and down-wide, described collude tooth be with about protruding spacing match up-narrow and down-wide trapezoidal.

3. laboratory according to claim 2 centrifuge tube is characterized in that: the described inner surface that colludes tooth tilts towards the bezel ring, direction.

4. laboratory according to claim 3 centrifuge tube is characterized in that: the openend periphery of described body has the enhancing limit, and described end cap forms the enhancing flange towards the surface perimeter of body.