CN208032610U - A kind of pipettor - Google Patents
A kind of pipettor Download PDFInfo
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- CN208032610U CN208032610U CN201820190348.5U CN201820190348U CN208032610U CN 208032610 U CN208032610 U CN 208032610U CN 201820190348 U CN201820190348 U CN 201820190348U CN 208032610 U CN208032610 U CN 208032610U
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- imbibition
- protective case
- bar
- button
- pipettor
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Abstract
The utility model provides a kind of pipettor, is related to accurate measuring device technical field, solves pipettor easy-to-leak liquid, measures the inaccurate problem of liquid；The device includes imbibition bar and imbibition nozzle; imbibition nozzle is set to the bottom end of imbibition bar; the outer sheath of imbibition bar is equipped with protective case; imbibition bar is slidably set in protective case, further includes connecting rod, button and positioning device, and the side of imbibition bar opens up fluted; connecting rod is articulated in groove; button is set to one end of the separate pivot of connecting rod, and third spring is fixed between connecting rod and groove walls, and third spring is located at the back side of button；Connecting rod is equipped with positioning device between button and shaft, and the glide direction of the inner wall upper edge imbibition bar of protective case is disposed with the first clamping position and the second clamping position；The utility model is positioned using push button, avoids and a large amount of dropping liquid occurs since imbibition bar stretches out the due to of generating larger vibration because squeezing with retraction process again, make to pipette liquid more accurate.
Description
Technical field
The utility model is related to accurate measuring device technical fields, more particularly, to a kind of pipettor.
Background technology
Pipettor is a kind of low capacity liquid transfer device, is had widely in the laboratory of big-and-middle universities and colleges, scientific research institutions
Using being also widely used in environmental protection, occupational health, public health, hospital, animals and plants research institute.Common pipettor is main
Be made of shell, imbibition bar and imbibition nozzle etc., pass through control knob when use or manual mode control imbibition nozzle inhale, tapping body.
Since the imbibition nozzle of above-mentioned common pipettor is externally exposed in air, inhaled when by generating negative pressure inside pipettor
When taking quantitative liquid, leakage is also easy to produce in moving process, or when drawing volatile liquid, evaporating, it is not smart to cause to measure
Really, in addition pollution external environment.
In view of the above-mentioned problems, it is existing application No. is：The Chinese patent of CN201720067492.5 discloses a kind of improved
Pipettor, including imbibition bar and imbibition nozzle, the imbibition bar lower section are equipped with interconnecting piece, and interconnecting piece lower central connects with imbibition nozzle
It connects, columnar protective case is additionally provided on the outside of the imbibition bar, the second locating ring, the imbibition are additionally provided at the top of protective case
The first locating ring and third locating ring are additionally provided on bar, wherein third locating ring is located at the lower section of the first locating ring, third positioning
Fixed block is additionally provided with below circle, fixed block is fixed on imbibition bar, is additionally provided between fixed block and the top of protective case several
Second spring.When use when pipettor, protective case is pushed up, the second locating ring is made to pass through the first locating ring, imbibition nozzle is smooth
Stretching through-hole, complete imbibition after, push down on protective case, so that the second locating ring is passed through the first locating ring and contact third positioning
Circle, interconnecting piece are withdrawn；The imbibition of above-mentioned imbibition nozzle is with retraction process mainly by pushing protective case to complete.
Applicants have discovered that at least there is following technical problem in the prior art：Although above-mentioned patent document is to the prior art
It is improved, imbibition bar, imbibition nozzle can be protected by the setting of protective case, pass through flexible first locating ring and
Two locating rings realize the positioning between imbibition bar and protective case；But after imbibition nozzle draws liquid, opposite imbibition bar sliding is protected
Occur to squeeze and cause to vibrate when sheath, between the first locating ring and the second locating ring, easily leads to imbibition nozzle dropping liquid, cause to move
The decline of liquid measure leverages liquid relief effect, still remains the problem of pipettor measures inaccurately, pollutes external environment, therefore
The above problem is urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of pipettors, to solve pipettor leakiness existing in the prior art
Liquid measures the inaccurate problem of liquid；Optimal technical scheme in many technical solutions provided by the utility model can be generated
The elaboration as detailed below of many technique effects.
To achieve the above object, the utility model provides following technical scheme：
A kind of pipettor provided by the utility model, including imbibition bar and imbibition nozzle, the imbibition nozzle are set to the suction
The outer sheath of the bottom end of liquid bar, the imbibition bar is equipped with protective case, and the imbibition bar is slidably set in the protective case, also
Including connecting rod, button and positioning device, the side of the imbibition bar opens up fluted, and the connecting rod is articulated in the groove,
The button is set to one end of the separate pivot of the connecting rod, and third bullet is fixed between the connecting rod and the groove walls
Spring, the third spring are located at the back side of the button；The connecting rod is equipped with positioning between the button and the pivot
The glide direction of device, imbibition bar described in the inner arm upper edge of the protective case is disposed with the first clamping position and the second clamping
Position；When the positioning device is clamped position clamping with described first, the imbibition nozzle is located in the protective case, presses the button
Shi Suoshu connecting rods are along pivoting, and the positioning device can be detached from first clamping position, and the imbibition bar slides into described
When positioning device is clamped position clamping with described second, the imbibition nozzle can stretch out outside the protective case.
Preferably, the positioning device is locating piece, and the first clamping position and second clamping position are respectively and institute
State the first card slot and the second card slot that locating piece matches.
Preferably, the protective case is additionally provided with set bottom, and the center at the set bottom is equipped with through-hole, and the imbibition nozzle can pass through
The through-hole.
Preferably, interconnecting piece is equipped between the imbibition bar and the imbibition nozzle, the interconnecting piece is round estrade, the circle
The smaller bottom surface of stage body area connects the imbibition nozzle.
Preferably, there are two limited block, the limited block is connected to institute by sliding rail for the protective case internal slide connection
It states on set bottom, described two limited blocks can be in contact with the interconnecting piece, be all provided between the limited block and the side wall of protective case
There is the first spring.
Preferably, described two limited blocks are trapezoid block, the side wall phase of the bevel edge of the trapezoid block and the interconnecting piece
It supports.
Preferably, the lateral surface of the button is equipped with anti-skid chequer.
Preferably, the locating piece is rotatably connected to several balls on the end face close to protective case.
Preferably, the side of the imbibition bar is equipped with graduated scale, and the graduated scale can indicate the first card slot and the second card slot
Position.
Preferably, the protective case is manufactured using transparent material.
A kind of pipettor provided by the utility model has the advantages that compared with prior art：
The utility model is positioned using push button：When without using pipettor, positioning device and the first clamping position clamping, and
The elastic force of third spring is conducive to keep the clamped condition, can prevent the unnecessary sliding of imbibition bar；It needs to use pipettor
When, by lower button, positioning device is detached with the first clamping position, and imbibition bar can be slided with respect to protective case, release button, locating piece
It is popped up under the elastic force effect of third spring, pushes imbibition bar that imbibition nozzle is made to stretch out outside protective case, when locating piece slides into second
It is clamped with it when being clamped position, realizes automatic positioning；It operates imbibition nozzle and draws liquid, by lower button after sucking, retraction imbibition bar is fixed
Position block is detached from release button behind the second clamping position, and locating piece is slided with imbibition bar, and locating piece is automatic when reaching the first clamping position
It is clamped again with the first clamping position, realizes automatic positioning；
When being moved between the first clamping position and the second clamping position due to positioning device, connecting rod compresses third spring and generates shape
Become so that positioning device, which is not necessarily to generate with protective case inner wall, squeezes stretching and the retraction that can realize imbibition bar, aforesaid way production
Raw vibration is far smaller than the vibration that generation is squeezed between the first locating ring and the second locating ring of elasticity, is conducive to inhale in protection
Liquid mouth, while avoiding occurring a large amount of with generation larger vibration is squeezed with locating ring in retraction process since imbibition bar stretches out again
Dropping liquid substantially improves liquid relief effect, makes to pipette liquid more accurate.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
It can be obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of sectional view of pipettor of the utility model；
Fig. 2 is a kind of dimensional structure diagram of pipettor of the utility model；
Fig. 3 is the dimensional structure diagram of the parts such as imbibition bar in a kind of pipettor of the utility model.
In figure：1, imbibition bar；2, imbibition nozzle；3, protective case；4, trapezoid block；5, the first spring；6, groove；7, connecting rod；8,
Button；9, third spring；10, locating piece；11, the first card slot；12, the second card slot.
Specific implementation mode
It, below will be to the technology of the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
In the description of the present invention, it should be understood that term "center", " length ", " width ", " height ",
The instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " side "
Orientation or positional relationship is to be merely for convenience of description the utility model and letter based on attached orientation or positional relationship shown in FIG. 1
Change description, do not indicate or imply the indicated equipment or element must have a particular orientation, with specific azimuth configuration and
Operation, therefore should not be understood as limiting the present invention.In the description of the present invention, unless otherwise indicated, " more
It is a " it is meant that two or more.
Referring to Fig.1, Fig. 1 is a kind of sectional view of pipettor of the utility model；The utility model provides a kind of pipettor,
Including imbibition bar 1 and imbibition nozzle 2, imbibition nozzle 2 is set to the bottom end of imbibition bar 1, and the outer sheath of imbibition bar 1 is equipped with protective case 3, inhales
Liquid bar 1 is slidably set in the protective case 3, further includes connecting rod 7, button 8 and positioning device, and the side of imbibition bar 1 opens up
Fluted 6, connecting rod 7 is articulated in groove 6, and button 8 is set to one end of the separate pivot of connecting rod 7, connecting rod 7 and the groove 6
Third spring 9 is fixed between wall, third spring 9 is located at the back side of the button 8；Connecting rod 7 is set between button 8 is with pivot
There are positioning device, the glide direction of the inner arm upper edge imbibition bar of protective case 3 to be disposed with the first clamping position and the second clamping position；
When positioning device is with the first clamping position clamping, imbibition nozzle 2 is located in the protective case 3, and the connecting rod 7 is along pivot when pressing button 8
Shaft rotation is dynamic, and positioning device can be detached from the first clamping position, when imbibition bar slides into positioning device with the second clamping position clamping, imbibition
Mouth 2 can stretch out outside the protective case.
The utility model is positioned using 8 formula of button：When without using pipettor, positioning device and the first clamping position clamping,
And the elastic force of third spring 9 is conducive to keep the clamped condition, can prevent the 1 unnecessary sliding of imbibition bar；Wherein, protective case
3 for being arranged clamping position and protection imbibition bar 1 and imbibition nozzle 2；Need using pipettor when, press lower button 8, positioning device and
First clamping position separation, imbibition bar 1 can be slided with respect to protective case 3, and releasing imbibition bar 1 makes imbibition nozzle 2 stretch out protective case 3, when
When imbibition bar 1 slides certain distance, positioning device pops up under the elastic force effect of third spring 9, and is clamped with the second clamping position,
Realize automatic positioning；When being moved between the first clamping position and the second clamping position due to positioning device, connecting rod 7 compresses third bullet
Spring 9 generates deformation so that positioning device is not necessarily to generate with 3 inner wall of protective case to squeeze the stretching that can either realize imbibition bar 1 and return
Contracting, aforesaid way are avoided since imbibition bar 1 is stretching out and squeezing generation larger vibration in retraction process with the locating ring of protrusion
And a large amount of dropping liquid occurs, liquid relief effect is substantially improved, makes to pipette liquid more accurate.
Wherein, positioning device and the first clamping position and the second clamping non-colinear position, positioning device, which can be used, protrudes from connecting rod 7
Locating ring or fin, correspondingly, the first clamping position and the second clamping position are be set to protective case inner wall recessed in clamping
Locating ring or fin are stated, concrete shape does not limit；In order to increase the area of clamping, positioning device is made to be clamped position and the with first
The clamping of two clamping positions is more firm, reduces the shaking of imbibition bar 1, it is preferred that positioning device uses locating piece 10, the first clamping
Position and the second clamping position are respectively the first card slot 11 and the second card slot 12 to match with locating piece.
With reference to Fig. 2, Fig. 2 is a kind of dimensional structure diagram of pipettor of the utility model；The shape of protective case 3, which is not done, to be had
Body limits, and takes for convenience, preferably uses cylindrical；Protective case 3 can only include side and be used to protect imbibition bar 1,
It may include side and bottom while protecting imbibition bar 1 and imbibition nozzle 2；In order to protect imbibition nozzle, while preventing imbibition nozzle liquid
Leakage and volatilization pollution environment, preferably scheme is, protective case is additionally provided with set bottom, and the center for covering bottom is equipped with through-hole (non-table in figure
Show), when pressing button 8, imbibition nozzle 2 is pushed out through-hole and draws liquid；Wherein, above-mentioned through-hole can be in the feelings for ensureing to be equipped with set bottom
Under condition, imbibition nozzle 2 can smoothly draw liquid by covering bottom.
In order to facilitate installation of the imbibition nozzle 2 on imbibition bar 1 and imbibition nozzle 2 convenient for stretching out the through-hole at 3 sets of bottoms of protective case,
As optional embodiment, as shown in Figure 1, Figure 3, interconnecting piece being equipped between imbibition bar and imbibition nozzle, interconnecting piece is round estrade,
The smaller bottom surface of round platform bulk area connects imbibition nozzle 2.
Due on interconnecting piece and 3 inner wall of protective case there are certain gap, in order to make imbibition bar 1 in protective case 3 more
Firm reduce is shaken, and preferably scheme is, there are two limited block (as shown in Figure 1), limited blocks for the connection of 3 internal slide of protective case
It is connected on set bottom by sliding rail, two limited blocks can be in contact with interconnecting piece, be all provided between limited block and the side wall of protective case 3
There is the first spring 5；Above-mentioned setting is offseted by limited block and interconnecting piece, can fix imbibition bar 1, is reduced and is shaken；Meanwhile round platform
The interconnecting piece of shape pushes limited block when imbibition bar 1 rises or falls, and generating deformation using the first spring provides centainly
Elastic force, when imbibition nozzle 2 is non-depressed, two limited blocks are inconsistent with interconnecting piece under the action of the first spring 5；When press by
Button 8 depresses imbibition nozzle 2, interconnecting piece downward actuation, and round platform inclined-plane and the limited block of interconnecting piece generate extruding, compress the first spring 5,
To make two limited blocks be moved to both sides, expose the through-hole of protective case bottom, imbibition nozzle 2 passes through through-hole to draw liquid.
Wherein, limited block reduces shaking of the imbibition bar 1 in protective case 3 to contradict interconnecting piece；In order to make imbibition bar 1
Remain conflict state during up and down and interconnecting piece can more fully squeeze limited block, it is preferred that as Fig. 1,
Shown in Fig. 3, two limited blocks are trapezoid block 4, and the bevel edge of trapezoid block 4 connects with the side wall of interconnecting piece, 4 longer bottom of trapezoid block
While horizontally slipping on the sliding rail at set bottom；Wherein sliding rail is the common setting of machinery field, and is linear type, keeps trapezoid block 4 longer
Bottom edge along sliding rail move along a straight line；Above-mentioned trapezoidal limited block can match with the interconnecting piece of truncated cone-shaped, and imbibition bar 1 is in protective case
Stability inside 3 is more preferable, prevents because shaking of the imbibition bar 1 inside protective case 3 makes imbibition nozzle 2 generate leakage.
Wherein, in button press 8, in order to increase the frictional force between hand and button 8, button caused by preventing rubber sleeve is non-
It normally bounces, the lateral surface of the button 8 is equipped with anti-skid chequer.
Optionally embodiment, if the locating piece 10 is being rotatably connected to dry milling on the end face of protective case 3
Pearl.
By using above-mentioned technical proposal, when locating piece 10 is slided with respect to protective case 3, several balls become sliding frictions into
Rolling friction greatly reduces frictional force, is conducive to reduce the power needed for sliding, to more be accurately controlled the cunning of imbibition bar 1
It is dynamic, and the abrasion of locating piece 10 can be slowed down.
The side of optionally embodiment, the imbibition bar 1 is equipped with graduated scale, and the graduated scale can indicate the first card
The position of slot 11 and the second card slot 12.
By using above-mentioned technical proposal, operating personnel, can be with reference mark when opposite imbibition bar 1 slides protective case 3
Ruler learns sliding distance, to avoid locating piece 10 from slipping over the second card slot 12.
Optionally embodiment, the protective case 3 are manufactured using transparent material.
By using above-mentioned technical proposal, be conducive to the situation that operating personnel are checked at any time in protective case 3, such as imbibition bar
1 sliding condition, the positioning scenarios etc. of locating piece 10, are conveniently operated.
In the description of this specification, specific features, structure or feature can in any one or more embodiments or
It can be combined in any suitable manner in example.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (10)
1. a kind of pipettor, including imbibition bar and imbibition nozzle, the imbibition nozzle is set to the bottom end of the imbibition bar, the imbibition
The outer sheath of bar is equipped with protective case, and the imbibition bar is slidably set in the protective case, it is characterised in that：Further include connecting
Bar, button and positioning device, the side of the imbibition bar open up fluted, and the connecting rod is articulated in the groove, described to press
Button is set to one end of the separate pivot of the connecting rod, and third spring is fixed between the connecting rod and the groove walls, described
Third spring is located at the back side of the button；The connecting rod is equipped with positioning device, institute between the button and the pivot
The glide direction for stating imbibition bar described in the inner arm upper edge of protective case is disposed with the first clamping position and the second clamping position；It is described fixed
When position device is clamped position clamping with described first, the imbibition nozzle is located in the protective case, presses the company when button
For bar along pivoting, the positioning device can be detached from first clamping position, and the imbibition bar slides into the positioning device
When with second clamping position clamping, the imbibition nozzle can stretch out outside the protective case.
2. a kind of pipettor according to claim 1, which is characterized in that the positioning device be locating piece, described first
Clamping position and second clamping position are respectively the first card slot and the second card slot to match with the locating piece.
3. a kind of pipettor according to claim 1, which is characterized in that the protective case is additionally provided with set bottom, the set bottom
Center be equipped with through-hole, the imbibition nozzle can pass through the through-hole.
4. a kind of pipettor according to claim 3, which is characterized in that be equipped between the imbibition bar and the imbibition nozzle
Interconnecting piece, the interconnecting piece are round estrade, and the smaller bottom surface of the round platform bulk area connects the imbibition nozzle.
5. a kind of pipettor according to claim 4, which is characterized in that there are two limits for the protective case internal slide connection
Position block, the limited block are connected to by sliding rail on the set bottom, and described two limited blocks can be in contact with the interconnecting piece, institute
It states and is equipped with the first spring between limited block and the side wall of protective case.
6. a kind of pipettor according to claim 5, which is characterized in that described two limited blocks are trapezoid block, described
The bevel edge of trapezoid block and the side wall of the interconnecting piece offset.
7. a kind of pipettor according to claim 1, it is characterised in that：The lateral surface of the button is equipped with anti-skid chequer.
8. a kind of pipettor according to claim 2, it is characterised in that：The locating piece is on the end face close to protective case
It is rotatably connected to several balls.
9. a kind of pipettor according to claim 2, it is characterised in that：The side of the imbibition bar is equipped with graduated scale, institute
The position of first card slot and second card slot can be indicated by stating graduated scale.
10. according to a kind of pipettor of claim 1-9 any one of them, it is characterised in that：The protective case uses transparent material
Matter manufactures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820190348.5U CN208032610U (en) | 2018-02-01 | 2018-02-01 | A kind of pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820190348.5U CN208032610U (en) | 2018-02-01 | 2018-02-01 | A kind of pipettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208032610U true CN208032610U (en) | 2018-11-02 |
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ID=63951768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820190348.5U Active CN208032610U (en) | 2018-02-01 | 2018-02-01 | A kind of pipettor |
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| Country | Link |
|---|---|
| CN (1) | CN208032610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647559A (en) * | 2019-01-21 | 2019-04-19 | 上海陶术生物科技有限公司 | A kind of full-automatic liquid relief station with anti-drip structure |
-
2018
- 2018-02-01 CN CN201820190348.5U patent/CN208032610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647559A (en) * | 2019-01-21 | 2019-04-19 | 上海陶术生物科技有限公司 | A kind of full-automatic liquid relief station with anti-drip structure |
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