Portable semi-automatic pipettor

Abstract

The utility model relates to the technical field of pipettors, and discloses a portable semi-automatic pipettor which comprises a pipettor body, one side of the pipettor body is provided with an open slot, the interior of the open slot is rotatably connected with a connecting column, the outer side of the connecting column is fixedly connected with a supporting plate, and the outer side of the supporting plate is fixedly connected with the pipettor body. A first gear is fixedly connected to the outer side of the connecting column, a second gear is connected to one side of the first gear in a meshed mode, the second gear is rotationally connected with the inner wall of the open groove, and an extension mechanism is arranged at one end of the supporting plate. The problems that a semi-automatic pipettor can be hung through the pipettor support, the liquid suction position cannot make contact with a table top, if the pipettor support does not exist in actual use, the pipettor makes contact with the table top easily, so that sample pollution is caused when a sample is sucked, and the pipettor needs to be carried together with the support when carried are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipettes, in particular to a portable semi-automatic pipette. Background Technique

[0002] A pipette, also known as a pipetting gun, is an experimental tool used to accurately transfer and dispense liquids. Pipettes are used for quantitative and qualitative analysis in chemical experiments, such as accurately adding reagents during solution preparation to ensure the accurate ratio of the reaction system. Pipettes are generally used to transfer solutions from one container to another. Semi-automatic pipettes have certain automation functions, such as being able to set the pipetting depth, save and retrieve experimental protocols, etc., but the operation still requires manual participation, such as installing pipette tips and adjusting parameters. This type of pipette usually combines mechanical and electronic technologies to improve the accuracy and efficiency of pipetting.

[0003] Existing semi-automatic pipettes often need to be used in conjunction with a pipette stand during use. The pipette stand can hang the semi-automatic pipette so that the liquid suction part does not contact the tabletop. In actual use, if there is no pipette stand, the pipette is likely to contact the desktop, resulting in sample contamination when sucking samples, and the pipette stand needs to be carried together when carrying the pipette, which is not convenient for users. Content of the Utility Model

[0004] The utility model provides a portable semi-automatic pipette, which has the beneficial effect of being portable and solves the problem mentioned in the above background technique that existing semi-automatic pipettes often need to be used in conjunction with a pipette stand during use. The pipette stand can hang the semi-automatic pipette so that the liquid suction part does not contact the tabletop. In actual use, if there is no pipette stand, the pipette is likely to contact the desktop, resulting in sample contamination when sucking samples, and the pipette stand needs to be carried together when carrying the pipette.

[0005] The utility model provides the following technical scheme: a portable semi-automatic pipette, including a pipette body. An opening groove is provided on one side of the pipette body. A connecting column is rotatably connected inside the opening groove. A support plate is fixedly connected to the outside of the connecting column. A first gear is fixedly connected to the outside of the connecting column. A second gear is meshed and connected to one side of the first gear. The second gear is rotatably connected to the inner wall of the opening groove. One end of the support plate is provided with an extension mechanism.

[0006] As an optional scheme of the portable semi-automatic pipette of the utility model, wherein: the extension mechanism includes a fixed column. One end of the fixed column is threadedly connected with an extension column. One end of the extension column is rotatably connected with an extension plate.

[0007] As an alternative solution of the portable semi-automatic pipette of the present utility model, wherein: a sliding plate is fixedly connected to the end of the support plate, a sliding shell is slidably connected to the outside of the sliding plate, and one end of the sliding shell is fixedly connected to the extension plate.

[0008] As an alternative solution of the portable semi-automatic pipette of the present utility model, wherein: a connecting shaft is fixedly connected to the inside of the second gear, and both ends of the connecting shaft are rotatably connected to the inner wall of the opening groove.

[0009] As an alternative solution of the portable semi-automatic pipette of the present utility model, wherein: a protective shell is fixedly connected to the left side of the inner wall of the opening groove, and the protective shell is located in front of the first gear and the second gear.

[0010] As an alternative solution of the portable semi-automatic pipette of the present utility model, wherein: a spring is sleeved on the outside of the connecting column, and one end of the spring is fixedly connected to the inner wall of the opening groove.

[0011] As an alternative solution of the portable semi-automatic pipette of the present utility model, wherein: the other end of the spring is fixedly connected to a pressing block, and one side of the pressing block abuts against the first gear.

[0012] As an alternative solution of the portable semi-automatic pipette of the present utility model, wherein: a fixing block is fixedly connected to the outside of the connecting column, and one side of the fixing block is rotatably connected to the first gear.

[0013] The present utility model has the following beneficial effects:

[0014] 1. For this portable semi-automatic pipette, by setting the support plate, the first gear and the second gear, the meshing of the first gear and the second gear enables the other support plate to follow and unfold when any one of the support plates is pushed to unfold. It does not require the user to unfold the support plates one by one, and can ensure that the unfolding angles of the two support plates are the same. The support plates with the same unfolding angle can ensure the levelness of the pipette when placed through the support plates, and avoid the situation that the pipette is placed obliquely due to different unfolding angles of the two support plates, which is likely to cause shaking and tipping when affected by external forces.

[0015] 2. For this portable semi-automatic pipette, by setting the extension mechanism, after rotating the extension column, the distance between the extension plate and the support plate is increased, so that the unfolded length of the support plate is increased. When the extension column is rotated in the reverse direction, the unfolded length of the support plate is reduced. By adjusting the length of the support plate after unfolding, the height of the pipette lifted by the support plate can be different at the same unfolding angle, thereby improving the applicability of the pipette in use. Description of the Drawings

[0016] Figure 1This is a schematic structural view of the present utility model.

[0017] Figure 2 This is a schematic structural view of the support plate of the present utility model in the unfolded state.

[0018] Figure 3 This is a partial structural view of the support plate of the present utility model.

[0019] Figure 4 This is a schematic structural view of the first gear and the second gear of the present utility model.

[0020] In the figure: 1, pipette body; 2, opening groove; 3, connecting column; 4, support plate; 5, first gear; 6, second gear; 701, fixed column; 702, extension column; 703, extension plate; 8, sliding plate; 9, sliding shell; 10, connecting shaft; 11, protective shell; 12, spring; 13, abutting block; 14, fixed block. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figures 1 to 4 , a portable semi-automatic pipette, including a pipette body 1. An opening groove 2 is provided on the left side of the pipette body 1. Two connecting columns 3 are rotatably connected inside the opening groove 2. The two connecting columns 3 are symmetrically arranged one above the other. A support plate 4 is fixedly connected to the outside of the connecting column 3. The width of the support plate 4 is the same as the width of the opening groove 2. Two first gears 5 are fixedly connected to the outside of the connecting column 3. The two first gears 5 are symmetrically arranged on the outside of the connecting column 3. A second gear 6 is meshed and connected to one side of the first gear 5. The number of the second gears 6 is four, and they are symmetrically distributed in two between the two connecting columns 3. Two adjacent second gears 6 are meshed with each other. The second gear 6 is rotatably connected to the inner wall of the opening groove 2. One end of the support plate 4 is provided with an extension mechanism.

[0024] The extension mechanism includes a fixed column 701. One end of the fixed column 701 is threadedly connected with an extension column 702. The diameter of the extension column 702 is smaller than the diameter of the fixed column 701. One end of the extension column 702 away from the support plate 4 is rotatably connected with an extension plate 703.

[0025] Working principle of this embodiment: After using the pipette, unfold the support plate 4 on the left side of the pipette, so that the support plate 4 drives the connecting column 3 to swing around the center of the connecting column 3. After the swung support plate 4 leaves the inside of the opening groove 2, then rotate the pipette counterclockwise so that the end of the support plate 4 contacts the desktop. Then, place the pipette on the desktop through the support plate 4. When the liquid inlet of the pipette placed contacts the desktop, it will be contaminated. However, through the meshing of the first gear 5 and the second gear 6, when the user pushes any support plate 4 to unfold, through the action of the first gear 5 and the second gear 6, the other support plate 4 will also follow to unfold. It is not necessary for the user to unfold the support plates 4 one by one, and it can ensure that the unfolding angles of the two support plates 4 are the same. The support plates 4 with the same unfolding angle can ensure the levelness when the pipette is placed through the support plates 4, and avoid the situation that the pipette is placed obliquely due to different unfolding angles of the two support plates 4, which is likely to shake and fall when affected by external forces.

[0026] After rotating the extension column 702, the extension column 702 drives the extension plate 703 to move to the side away from the fixed column 701, increasing the distance between the extension plate 703 and the support plate 4, and increasing the unfolded length of the support plate 4. When the extension column 702 is rotated in the reverse direction, the unfolded length of the support plate 4 decreases. By adjusting the length of the support plate 4 after unfolding, the height at which the support plate 4 supports the pipette can be different at the same unfolding angle, improving the applicability of the pipette.

[0027] Embodiment Two

[0028] This embodiment is an improvement based on Embodiment One. Specifically, please refer to Figures 1 to 4 , a sliding plate 8 is fixedly connected to the end of the support plate 4, and a sliding shell 9 is slidably connected to the outside of the sliding plate 8. One end of the sliding shell 9 is fixedly connected to the extension plate 703.

[0029] By setting the sliding plate 8 and the sliding shell 9, a limiting effect can be achieved when the support plate 4 moves away from the sliding plate 8, making the support plate 4 more stable and not easy to shake when moving.

[0030] A connecting shaft 10 is fixedly connected to the inside of the second gear 6, and both ends of the connecting shaft 10 are rotatably connected to the inner wall of the opening groove 2.

[0031] By setting the connecting shaft 10, the connecting shaft 10 rotatably connects the second gear 6 to the inner wall of the opening groove 2, restricting the rotation of the second gear 6.

[0032] A protective shell 11 is fixedly connected to the left side of the inner wall of the opening groove 2, and the protective shell 11 is located in front of the first gear 5 and the second gear 6.

[0033] By providing a protective housing 11, the protective housing 11 can act as a shield on the left side of the first gear 5 and the second gear 6, preventing the first gear 5 and the second gear 6 from being exposed.

[0034] A spring 12 is sleeved outside the connecting column 3, and one end of the spring 12 is fixedly connected to the inner wall of the opening groove 2.

[0035] The other end of the spring 12 is fixedly connected with a pressing block 13. The inner side of the pressing block 13 is slidably connected to the outside of the connecting column 3, and one side of the pressing block 13 abuts against the first gear 5.

[0036] By providing the spring 12 and the pressing block 13, the elastic force exerted by the spring 12 on the pressing block 13 causes the first gear 5 to be squeezed, thereby restricting the support plate 4 and making the support plate 4 be subject to resistance when it stops swinging, preventing the support plate 4 from shaking due to force and resulting in swing displacement.

[0037] A fixing block 14 is fixedly connected to the outside of the connecting column 3, and one side of the fixing block 14 is rotatably connected to the first gear 5.

[0038] By providing the fixing block 14, the fixing block 14 can reinforce the connection between the connecting column 3 and the first gear 5, preventing the first gear 5 from breaking under long-term force application.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0040] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A portable semi-automatic pipette, comprising a pipette body (1), characterized in that: An open groove (2) is provided on one side of the pipette body (1); a connecting column (3) is rotatably connected inside the open groove (2); a support plate (4) is fixedly connected to the outer side of the connecting column (3); a first gear (5) is fixedly connected to the outer side of the connecting column (3); a second gear (6) is meshingly connected to one side of the first gear (5); the second gear (6) is rotatably connected to the inner wall of the open groove (2); and an extension mechanism is provided at one end of the support plate (4).

2. The portable semi-automatic pipette according to claim 1, characterized in that: The extension mechanism comprises a fixed column (701), one end of the fixed column (701) is threadedly connected to an extension column (702), and one end of the extension column (702) is rotatably connected to an extension plate (703).

3. The portable semi-automatic pipette according to claim 2, characterized in that: The end of the support plate (4) is fixedly connected to a sliding plate (8), the outer side of the sliding plate (8) is slidably connected to a sliding shell (9), and one end of the sliding shell (9) is fixedly connected to the extension plate (703).

4. The portable semi-automatic pipette according to claim 1, characterized in that: A connecting shaft (10) is fixedly connected inside the second gear (6), and both ends of the connecting shaft (10) are rotatably connected to the inner wall of the opening groove (2).

5. The portable semi-automatic pipette according to claim 1, characterized in that: A protective shell (11) is fixedly connected to the left side of the inner wall of the opening slot (2), and the protective shell (11) is located in front of the first gear (5) and the second gear (6).

6. The portable semi-automatic pipette according to claim 1, characterized in that: A spring (12) is sleeved on the outer side of the connecting column (3), and one end of the spring (12) is fixedly connected to the inner wall of the opening groove (2).

7. The portable semi-automatic pipette according to claim 6, characterized in that: The other end of the spring (12) is fixedly connected to a pressing block (13), and one side of the pressing block (13) is in contact with the first gear (5).

8. The portable semi-automatic pipette according to claim 1, characterized in that: A fixing block (14) is fixedly connected to the outer side of the connecting column (3), and one side of the fixing block (14) is rotationally connected to the first gear (5).

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