Pipettor capable of pushing out suction head

Abstract

The utility model discloses a pipettor capable of pushing out a suction head, which comprises a handle main body, the bottom of the handle main body is connected with a nozzle connecting piece, the bottom of the nozzle connecting piece is sleeved with the suction head, the outer side of the handle main body is fixedly sleeved with a handle outer sleeve, one side of the handle outer sleeve is provided with a pusher in a sliding manner, and the pusher is connected with the nozzle connecting piece. A T-shaped protruding strip is arranged on the side face of the handle outer sleeve, a T-shaped groove is formed in the side face of the ejector, the T-shaped protruding strip is embedded into the T-shaped groove, the outer side of the pipe nozzle connecting piece is movably sleeved with an ejector ring pipe, and one side of the ejector ring pipe is connected with the lower portion of the ejector. According to the utility model, the handle outer sleeve is additionally arranged outside the handle main body of the existing pipettor, the T-shaped groove of the ejector is matched and connected with the T-shaped raised line of the handle outer sleeve in a sliding manner, and the ejector drives the ejector ring pipe to move to push out the suction head, so that the pipettor can be used for many times, and the risk that the suction head is taken off by a hand can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to biochemical experimental instrument field especially, relates to pipette particularly, a pipette of push out tip can be provided. BACKGROUND

[0002] The pipette of fixed range does not have the function of pushing out the tip, therefore, in the prior art, the pipette is discarded after using once, causing waste, or the tip is taken off by hand, but it is inconvenient to take the tip by hand, even if wearing gloves, the gloves can be broken when pulling the tip, and the gloves sticking to the liquid taken will cause pollution to other objects, greatly increasing the risk of biological pollution. SUMMARY

[0003] The utility model discloses a pipette of push out tip can be provided to solve the technical problem that the pipette cannot push out the tip in the prior art.

[0004] The utility model discloses a pipette of push out tip, including handle main part, the bottom of handle main part is connected with the pipe nozzle connector, the bottom of pipe nozzle connector is connected with tip sleeve, wherein, the outside of handle main part is fixedly provided with handle outer cover, one side of handle outer cover is slidably provided with pusher, the side of handle outer cover is provided with T-shaped convex strip, the side of pusher is provided with T-shaped recess, T-shaped convex strip is embedded in T-shaped recess, the outside of pipe nozzle connector is movably provided with pusher ring pipe, one side of pusher ring pipe is connected with the below of pusher.

[0005] Further, the middle of T-shaped convex strip is provided with recess, spring is arranged in recess, the T-shaped recess of pusher is provided with first boss, the first boss is inserted into recess and presses on the upper side of spring.

[0006] Further, one side below of pusher is provided with second boss, the upper side of the side surface of pusher ring pipe is provided with limiting protrusion, second boss is embedded in limiting protrusion.

[0007] Further, the second boss is H-shaped, the middle of the upper portion of limiting protrusion is provided with first protruding part, the lower portion both sides of limiting protrusion are provided with second protruding part, the first protruding part is embedded in the middle of the upper portion of second boss, and the second protruding part is in abutment with the bottom both sides of second boss.

[0008] Further, the bottom of handle outer cover is provided with notch, and the limiting protrusion of pusher ring pipe is embedded in the notch.

[0009] Further, the upper side of the side surface of handle main part is provided with arc limiting block, and the pusher is arranged on the side opposite to the arc limiting block.

[0010] The utility model discloses compared with prior art, its effect is positive and obvious, the utility model discloses a handle main body outside of the existing pipettor increases handle cover, and the T-shaped recess of ejector is slidably connected with the T-shaped convex strip of handle cover, and the ejector drives ejector ring pipe to move and pushes the pipettor head, so that the pipettor can be used repeatedly, and the risk of pipettor head can be avoided by hand. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic diagram of the utility model.

[0012] Figure 2 It is the structure sectional view of the utility model.

[0013] Figure 3 It is the structure schematic diagram of handle cover of the utility model.

[0014] Figure 4 It is the structure schematic diagram of ejector of the utility model.

[0015] Figure 5 It is the structure schematic diagram of ejector ring pipe cover of the utility model.

[0016] Wherein, 1 is handle main body, 101 is arc limit block, 2 is lifting rod, 3 is nozzle connecting piece, 4 is pipettor head, 5 is handle cover, 501 is T-shaped convex strip, 502 is recess, 503 is spring, 504 is notch, 6 is ejector, 601 is T-shaped recess, 602 is first boss, 603 is second boss, 7 is ejector ring pipe, 701 is limit protrusion, 7011 is first protruding portion, 7012 is second protruding portion. DETAILED DESCRIPTION

[0017] The utility model will be further described below in connection with the drawings and examples, but not therefore limit the utility model.

[0018] As Figures 1-5 Shown, a pipettor of pipettor head of the utility model can be pushed out, including handle main body 1, the bottom of handle main body 1 is connected with nozzle connecting piece 3, the bottom of nozzle connecting piece 3 is connected with pipettor head 4, wherein, the outside of handle main body 1 is fixedly provided with handle cover 5, and one side of handle cover 5 is slidably provided with ejector 6, the side of handle cover 5 is provided with T-shaped convex strip 501, the side of ejector 6 is provided with T-shaped recess 601, T-shaped convex strip 501 is embedded in T-shaped recess 601, the outside of nozzle connecting piece 3 is movably provided with ejector ring pipe 7, and one side of ejector ring pipe 7 is connected with the below of ejector 6.

[0019] Further, the middle of the T-shaped convex strip 501 is provided with a groove 502, the spring 503 is arranged in the groove 502, the T-shaped groove 601 of the ejector 6 is provided with a first boss 602, the first boss 602 extends into the groove 502 and is pressed on the upper side of the spring 503.

[0020] Further, the second boss 603 is arranged below one side of the ejector 6, the limiting protrusion 701 is arranged above the side surface of the ejector ring 7, and the second boss 603 is embedded in the limiting protrusion 701.

[0021] Further, the second boss 603 is H-shaped, the upper middle of the limiting protrusion 701 is provided with a first protruding part 7011, the lower sides of the limiting protrusion 701 are provided with second protruding parts 7012, the first protruding part 7011 is embedded in the upper middle of the second boss 603, and the second protruding parts 7012 abut the bottoms of the two sides of the second boss 603.

[0022] Further, the bottom of the handle outer sleeve 5 is provided with a notch 504, and the limiting protrusion 701 of the ejector ring 7 is embedded in the notch 504.

[0023] Further, the side surface of the handle body 1 is provided with an arc-shaped limiting block 101, and the ejector 6 is arranged on the side opposite to the arc-shaped limiting block 101.

[0024] When the utility model is used, the top of the suction head 4 is sleeved on the outside of the pipe nozzle connecting piece 3, the air pressure in the pipe nozzle connecting piece 3 is changed by using the lifting rod 2, so that the liquid is sucked or pushed out of the suction head. After the use of the suction head 4, the ejector 6 is pressed down, the ejector ring 7 is driven to move downwards by the ejector 6, the bottom inner diameter of the ejector ring 7 is less than the top outer diameter of the suction head 4, so that the suction head 4 is pushed out. The T-shaped convex strip 501 of the handle outer sleeve 5 is matched with the T-shaped groove 601 of the ejector 6, so that the ejector 6 can move along the direction of the T-shaped convex strip 501 and prevent the ejector 6 from being pulled out.

[0025] The spring 502 arranged in the groove 502 of the T-shaped convex strip 501 abuts against the first boss 602, after the suction head 4 is pushed out by pressing the ejector 6, the spring 503 can provide a restoring force, so that the ejector 6 is reset, and the ejector ring 7 is reset by the ejector 6.

[0026] The ejector ring tube 7 can be connected with the second boss 603 of the ejector 6 through the limiting protrusion 701. Specifically, when the ejector 7 is pressed down, the second protrusion part 7012 of the limiting protrusion 701 abuts against the bottom of the second boss 603, so that the ejector ring tube 7 can be pushed to move downward when the ejector 6 moves downward; when the ejector 6 is reset upward, the first protrusion part 7011 of the limiting protrusion 701 is in the middle of the upper part of the H-shaped second boss 603, so as to drive the ejector ring tube 7 to move upward, and meanwhile, the relative rotation between the ejector ring tube 7 and the ejector 6 can be prevented.

[0027] The notch 501 at the bottom of the handle outer sleeve 5 can accommodate the limiting protrusion 701 of the ejector ring sleeve 7, so that the overall structure is more beautiful, and the notch 501 can limit the limiting protrusion 701.

[0028] The arc-shaped limiting block 101 is arranged above the handle body 1, so as to limit the handle body 1 when single-handed operation, and prevent the handle body 1 from sliding downward when the ejector 6 is pressed down to eject the suction head 4. The ejector 6 is arranged on the side opposite to the arc-shaped limiting block 101, so that the overall structure is symmetrical and beautiful. When the thumb presses the ejector 6, the remaining four fingers can hold the side of the handle body 1 with the arc-shaped limiting block 101, so as to prevent the ejector 6 from interfering with the fingers.

Claims

1. A pipette with ejectable tip, comprising a handle body (1), the bottom of which is connected with a nozzle connector (3), the bottom of which is connected with a tip (4) sleeve, characterized in that: The outer side of the handle body (1) is fixedly sleeved with a handle outer sleeve (5), one side of the handle outer sleeve (5) is slidably provided with a pusher (6), the side surface of the handle outer sleeve (5) is provided with a T-shaped convex strip (501), the side surface of the pusher (6) is provided with a T-shaped groove (601), the T-shaped convex strip (501) is embedded in the T-shaped groove (601), the outer side of the nozzle connecting piece (3) is movably sleeved with a pusher ring tube (7), and one side of the pusher ring tube (7) is connected with the lower side of the pusher (6).

2. The ejectable tip pipette of claim 1, wherein: The middle of the T-shaped convex strip (501) is provided with a groove (502), the groove (502) is provided with a spring (503), the T-shaped groove (601) of the pusher (6) is provided with a first boss (602), the first boss (602) extends into the groove (502) and presses on the upper side of the spring (503).

3. The ejectable tip pipette of claim 1, wherein: The side of the pusher (6) is provided with a second boss (603) below, the side surface of the pusher ring tube (7) is provided with a limiting protrusion (701) above, and the second boss (603) is embedded in the limiting protrusion (701).

4. The ejectable tip pipette of claim 3, wherein: The second boss (603) is H-shaped, the upper middle of the limiting protrusion (701) is provided with a first protruding part (7011), the lower sides of the limiting protrusion (701) are provided with second protruding parts (7012), the first protruding part (7011) is embedded in the upper middle of the second boss (603), and the second protruding parts (7012) abut against the two sides of the bottom of the second boss (603).

5. The ejectable tip pipette of claim 3, wherein: The bottom of the handle outer sleeve (5) is provided with a notch (504), and the limiting protrusion (701) of the pusher ring tube (7) is embedded in the notch (504).

6. The ejectable tip pipette of claim 1, wherein: The side surface of the handle body (1) is provided with an arc-shaped limiting block (101) above, and the pusher (6) is arranged on the side opposite to the arc-shaped limiting block (101).

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