CN203830035U - Anti-release pipette - Google Patents
Anti-release pipette Download PDFInfo
- Publication number
- CN203830035U CN203830035U CN201420131384.6U CN201420131384U CN203830035U CN 203830035 U CN203830035 U CN 203830035U CN 201420131384 U CN201420131384 U CN 201420131384U CN 203830035 U CN203830035 U CN 203830035U
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- CN
- China
- Prior art keywords
- sealing ring
- elastic sealing
- liquid transfer
- gun head
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an anti-release pipette. The anti-release pipette solves the problem of poor sealing performance between a pipette and a pipette sheath handle and poor use stability of the pipette in the prior art. The anti-release pipette comprises a pipette body, the inner surface of the upper portion of the pipette body is provided with a step, and the step is provided with an elastic sealing ring; the elastic sealing ring is fixedly connected with the vertical surface of the step through a retaining structure, the lower inner surface of the elastic sealing ring is protruded inwards to form a clamping unit, and the inner surface of the elastic sealing ring above the clamping unit forms a sealing surface in interference fit with the pipette sheath handle; the surface of the clamping unit is circumferentially provided with a plurality of ring-shaped and U-cross-section squeezing grooves at intervals in the vertical direction; the clamping unit between every two neighboring squeezing grooves is provided with a pressing ridge in interference fit with the pipette sheath handle. The anti-release pipette is convenient to use and high in universality, sealing performance and use stability.
Description
Technical field
The utility model relates to a kind of Bioexperiment apparatus, especially relates to a kind of anticreep liquid transfer gun head.
Background technology
Liquid-transfering gun is the one of pipettor, is usually used in pipetting of a small amount of or micro liquid in laboratory, and the liquid-transfering gun of different size supports the use corresponding liquid transfer gun head and uses.Existing liquid transfer gun head mostly is polypropylene material and makes, and there is following problem: the sealing between (1) liquid-transfering gun toggle and liquid transfer gun head is poor, after imbibition, weeping can occur; (2) frictional force between the inner wall smooth of liquid transfer gun head, and liquid-transfering gun toggle is little, thereby on the easily loosening liquid-transfering gun toggle of liquid transfer gun head, comes off after imbibition, and stability in use is poor; (3) for ensureing the sealing between liquid transfer gun head and liquid-transfering gun toggle, in the time of assembling, need to use larger power, thereby this can cause the wearing and tearing of liquid-transfering gun toggle to affect sealing, in addition, also easily cause liquid-transfering gun toggle excessively to insert in liquid transfer gun head, cause the damage of liquid transfer gun head.
For example, Granted publication CN202162005U, the Chinese patent of Granted publication day 2012.03.14 discloses a kind of anti-withdrawing pipette tip, and it comprises rifle head, is provided with anti-pumpback bulge loop together in the nearly upper end of rifle head.Its weak point is, this liquid transfer gun head is the problem that sealing is poor and liquid transfer gun head stability in use is poor between unresolved liquid-transfering gun toggle and liquid transfer gun head still.
Utility model content
The utility model is sealing and the poor problem of liquid transfer gun head stability in use between liquid transfer gun head and the liquid-transfering gun toggle in order to solve prior art, provide a kind of simple in structure, anticreep liquid transfer gun head easy to use, the sealing between versatility and liquid transfer gun head and stability in use are good.
To achieve these goals, the utility model is by the following technical solutions:
A kind of anticreep liquid transfer gun head, comprise liquid transfer gun head body, the upper inner face of described liquid transfer gun head body is provided with step, described step is provided with elastic sealing ring, described elastic sealing ring is fixedly connected with the vertical plane of step by backing stop structure, the lower inside surface inwardly protruding of described elastic sealing ring forms clamping section, be positioned at the elastic sealing ring medial surface formation of top, clamping section and the sealing surface of liquid-transfering gun toggle interference fit, the surface of described clamping section is in vertical direction along being circumferentially interval with the crowded groove that allows ringwise some and that cross section takes the shape of the letter U, adjacent squeezing allows clamping section between groove form and the compression convex ridge of liquid-transfering gun toggle interference fit.The utility model arranges elastic sealing ring in the inside, upper end of liquid transfer gun head, and elastic sealing ring is fixed in liquid transfer gun head body by backing stop structure, the lower inside surface inwardly protruding of elastic sealing ring forms clamping section, be positioned at the elastic sealing ring medial surface formation of top, clamping section and the sealing surface of liquid-transfering gun toggle interference fit, the surface of clamping section is in vertical direction along being circumferentially interval with the crowded groove that allows ringwise some and that cross section takes the shape of the letter U, adjacent squeezing allows clamping section between groove form and the compression convex ridge of liquid-transfering gun toggle interference fit, wherein, sealing surface can closely cooperate with the toggle of liquid transfer gun head, improve sealing, avoid, after imbibition, weeping occurs, the frictional force between liquid-transfering gun toggle and elastic sealing ring can further be improved in clamping section, but clamping section makes liquid-transfering gun toggle be difficult for inserting in elastic sealing ring, therefore in the surperficial vertical direction of clamping section, edge is circumferentially interval with the crowded groove that allows ringwise some and that cross section takes the shape of the letter U, adjacent squeezing allows clamping section between groove form and the compression convex ridge of liquid-transfering gun toggle interference fit, wherein, compress the contact area that convex ridge can reduce clamping section and liquid-transfering gun toggle, increase frictional force between the two, can be firmly fixing with elastic sealing ring after making liquid-transfering gun toggle insert liquid transfer gun head, in imbibition, move in the process of liquid and can not come off, stability is greatly improved, in the time that liquid-transfering gun toggle inserts in elastic sealing ring, compressing convex ridge can be squeezed into the crowded of both sides and allow in groove because being subject to the extruding of liquid-transfering gun toggle again, thereby liquid-transfering gun toggle can be inserted in elastic sealing ring smoothly, and insert smoothly after elastic sealing ring until liquid-transfering gun toggle, the compression convex ridge of crimp is under the effect of restoring force, can firmly clamp again liquid-transfering gun toggle, by squeezing the cooperation that allows groove and compress convex ridge, can ensure that liquid-transfering gun toggle can insert in elastic sealing ring smoothly, can be firmly fixing with elastic sealing ring after making again liquid-transfering gun toggle insert liquid transfer gun head, in imbibition, move in the process of liquid and can not come off, stability is greatly enhanced.
As preferably, described backing stop structure comprises the connection bulge loop be located on elastic sealing ring lateral surface, along being circumferentially located at the back stop slot on step vertical plane, the outer ledge of described connection bulge loop stretches out and forms retaining flange, the retaining snap ring that described retaining flange is T-shaped with being connected bulge loop formation cross section, described back stop slot entirety in the form of a ring structure and cross section T-shaped, described retaining snap ring is positioned at back stop slot and joins with back stop slot card.The cross section of back stop slot and retaining snap ring is all T-shaped, in playing fixation, can effectively prevent that liquid-transfering gun toggle from pulling out elastic seal ring in the time inserting liquid transfer gun head from liquid transfer gun head body, plays good retaining effect, improves stability in use.
As preferably, described elastic sealing ring and retaining snap ring are homogeneity integrative-structure.Homogeneity integrative-structure, easy to process, and good integral strength.
As preferably, the upper end open place of described elastic sealing ring is provided with interior chamfering.
As preferably, the cross section of described clamping section is isosceles trapezoid or circular arc.The cross section of clamping section is isosceles trapezoid or circular arc, has guide effect, is convenient to liquid-transfering gun toggle and inserts in elastic sealing ring.
As preferably, the upper and lower surface of described connection bulge loop is provided with the entirety deformation groove of structure in the form of a ring, and the cross section of described deformation groove is circular arc.Be the deformation groove of circular arc, in the time of assembling retaining snap ring, can provide retaining flange because of the required space of crimp, can avoid because retaining flange is because pushing and be damaged by force, be convenient to again the assembling of retaining snap ring simultaneously.
As preferably, described retaining flange away from the outer end dual-side of elastic sealing ring along being provided with outer chamfering.
Therefore, the beneficial effects of the utility model are: liquid transfer gun head body of the present utility model arranges an elastic sealing ring at an upper portion thereof, efficiently solve sealing and the poor problem of liquid transfer gun head stability in use between liquid transfer gun head and liquid-transfering gun toggle, liquid transfer gun head structure of the present utility model is simple, easy to use, stability in use and versatility are good.
Brief description of the drawings
Fig. 1 is a kind of structure cutaway view of the present utility model.
Fig. 2 is the enlarged drawing at A place in Fig. 1.
In figure: liquid transfer gun head body 1, elastic sealing ring 2, connects bulge loop 3, retaining flange 4, back stop slot 5, sealing surface 6, the crowded groove 7 that allows, compresses convex ridge 8, deformation groove 9.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
A kind of anticreep liquid transfer gun head as shown in Figure 1, comprise liquid transfer gun head body 1, the upper inner face of liquid transfer gun head body 1 has step, step is provided with elastic sealing ring 2(as shown in Figure 2), the upper end open place of elastic sealing ring has interior chamfering, on lateral surface on elastic sealing ring 2, outwardly being formed with connects bulge loop 3, the outer ledge that connects bulge loop 3 stretches out and forms retaining flange 4, retaining flange is provided with outer chamfering away from the dual-side edge, outer end of elastic sealing ring, retaining flange 4 be connected bulge loop 3 and form the T-shaped retaining snap ring in cross section, on the vertical plane of step, edge circumferentially has the entirety T-shaped back stop slot 5 of structure and cross section in the form of a ring, retaining snap ring is positioned at back stop slot 5 and joins with back stop slot 5 cards, the lower inside surface inwardly protruding Formation cross-section of elastic sealing ring 2 is the clamping section (in the present embodiment, cross section, clamping section is isosceles trapezoid) of isosceles trapezoid or circular arc, be positioned at the elastic sealing ring 2 medial surfaces formation of top, clamping section and the sealing surface 6 of liquid-transfering gun toggle interference fit, the surface of clamping section is in vertical direction along the circumferential crowded groove 7 that allows that interval has three circles ringwise and cross section takes the shape of the letter U, adjacent squeezing allows clamping section between groove 7 form and the compression convex ridge 8 of liquid-transfering gun toggle interference fit.
In the time that liquid-transfering gun toggle inserts in liquid transfer gun head of the present utility model, compressing convex ridge 8 can be squeezed into the crowded of both sides and allow in groove 7 because being subject to the extruding of liquid-transfering gun toggle, thereby liquid-transfering gun toggle can be inserted in elastic sealing ring 2 smoothly, and after liquid-transfering gun toggle inserts elastic sealing ring 2 smoothly, 6 of sealing surfaces closely cooperate with the toggle of liquid transfer gun head, improve sealing, and the compression convex ridge 8 of crimp is under the effect of restoring force, can firmly clamp again liquid-transfering gun toggle, make liquid-transfering gun toggle and elastic sealing ring 2 firmly fixing, in use be difficult for coming off, good stability.
Above-described embodiment is preferably scheme of one of the present utility model, not the utility model is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim records.
Claims (7)
1. an anticreep liquid transfer gun head, comprise liquid transfer gun head body (1), it is characterized in that, the upper inner face of described liquid transfer gun head body (1) is provided with step, described step is provided with elastic sealing ring (2), described elastic sealing ring (2) is fixedly connected with the vertical plane of step by backing stop structure, the lower inside surface inwardly protruding of described elastic sealing ring (2) forms clamping section, be positioned at elastic sealing ring (2) the medial surface formation of top, clamping section and the sealing surface (6) of liquid-transfering gun toggle interference fit, the surface of described clamping section is in vertical direction along being circumferentially interval with the crowded groove (7) that allows ringwise some and that cross section takes the shape of the letter U, adjacent squeezing allows clamping section between groove (7) form and the compression convex ridge (8) of liquid-transfering gun toggle interference fit.
2. a kind of anticreep liquid transfer gun head according to claim 1, it is characterized in that, described backing stop structure comprises the connection bulge loop (3) of being located on elastic sealing ring (2) lateral surface, along being circumferentially located at the back stop slot (5) on step vertical plane, the outer ledge of described connection bulge loop (3) stretches out and forms retaining flange (4), the retaining snap ring that described retaining flange (4) is T-shaped with being connected bulge loop (3) formation cross section, described back stop slot (5) entirety in the form of a ring structure and cross section T-shaped, described retaining snap ring is positioned at back stop slot (5) and joins with back stop slot (5) card.
3. a kind of anticreep liquid transfer gun head according to claim 1, is characterized in that, described elastic sealing ring (2) is homogeneity integrative-structure with retaining snap ring.
4. according to a kind of anticreep liquid transfer gun head described in claim 1 or 3, it is characterized in that, the upper end open place of described elastic sealing ring (2) is provided with interior chamfering.
5. a kind of anticreep liquid transfer gun head according to claim 1, is characterized in that, the cross section of described clamping section is isosceles trapezoid or circular arc.
6. a kind of anticreep liquid transfer gun head according to claim 1, is characterized in that, the upper and lower surface of described connection bulge loop (3) is provided with the entirety deformation groove (9) of structure in the form of a ring, and the cross section of described deformation groove (9) is circular arc.
7. a kind of anticreep liquid transfer gun head according to claim 1, is characterized in that, described retaining flange (4) is provided with outer chamfering away from the dual-side edge, outer end of elastic sealing ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131384.6U CN203830035U (en) | 2014-03-24 | 2014-03-24 | Anti-release pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131384.6U CN203830035U (en) | 2014-03-24 | 2014-03-24 | Anti-release pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203830035U true CN203830035U (en) | 2014-09-17 |
Family
ID=51507927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420131384.6U Expired - Fee Related CN203830035U (en) | 2014-03-24 | 2014-03-24 | Anti-release pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203830035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345784A (en) * | 2020-10-22 | 2021-02-09 | 烟台海深威软件有限公司 | Sample adding needle, needle withdrawing mechanism used for sample adding needle and needle installing and withdrawing method |
-
2014
- 2014-03-24 CN CN201420131384.6U patent/CN203830035U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345784A (en) * | 2020-10-22 | 2021-02-09 | 烟台海深威软件有限公司 | Sample adding needle, needle withdrawing mechanism used for sample adding needle and needle installing and withdrawing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20160324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |