96-hole electronic pipettor
By introducing a positioning plate, electric actuator, and infrared sensor into the 96-well electronic pipette, vertical distribution and automatic resetting of consumables are achieved, solving the problem of excessive size and space occupation in existing technologies and improving the space utilization efficiency in the laboratory.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ANIMAL HEALTH & EPIDEMIOLOGY CENT
- Filing Date
- 2025-03-17
- Publication Date
- 2026-05-12
AI Technical Summary
The existing 96-well electronic pipette is large in size due to its four-well horizontal distribution, which occupies space on the lab bench and affects the placement of other experimental equipment.
A 96-well electronic pipette was designed. By setting up a positioning plate, electric push rod, rotating block, limiting shaft, multi-stage electric push rod, locking block and infrared sensor, it realizes the vertical distribution of consumables and automated operation, reduces the size of the device and facilitates pipetting operations.
It effectively reduces the space occupied by the device on the experimental platform, facilitates the placement of other experimental equipment, and achieves automatic reset in each pipetting operation step to avoid interference.
Smart Images
Figure CN224221379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipette technology, and in particular to a 96-well electronic pipette. Background Technology
[0002] A 96-well electronic pipette is a commonly used laboratory instrument in fields such as biochemistry, molecular biology, drug development, and clinical diagnostics. It is specifically designed for precise liquid transfer operations on 96-well plates. Through a microprocessor, it precisely controls the motor's operation, driving the piston to move up and down within the pipette's internal chamber. By precisely controlling the piston's movement distance, it can accurately aspirate and transfer liquids of varying volumes. However, in existing technologies, when using some 96-well electronic pipettes, such as four-well pipettes, the horizontal arrangement of the four wells necessitates continuous horizontal movement of the pipette for liquid transfer, resulting in a large overall size. This increases the space occupied on the laboratory benchtop and hinders the placement of other experimental equipment. Therefore, this paper proposes a new 96-well electronic pipette to address these issues. Utility Model Content
[0003] The technical problem to be solved by this utility model overcomes the existing defects and can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A 96-well electronic pipette includes a pipette, a controller fixedly connected to the top of the front end of the pipette, a base fixedly connected to the bottom end of the pipette, a fixed seat fixedly connected to the right end of the base, an electric push rod rotatably connected to the left side of the fixed seat via a rotating shaft, a rotating block rotatably connected to the other end of the electric push rod via a rotating shaft, and the rotating block rotatably connected to the fixed seat via the rotating shaft, a spring fixedly connected to the inner side of the rotating block, a limit shaft fixedly connected to the other end of the spring, a positioning plate fixedly connected to the top end of the limit shaft, a limit groove formed at the top end of the positioning plate, a multi-stage electric push rod fixedly connected to the bottom inner side of the base, a fixed rod fixedly connected to the top end of the multi-stage electric push rod, the fixed rod contacting the base, and a locking block fixedly connected to the top end of the fixed rod.
[0006] As a further improvement of this utility model, there are 4 sets of limiting shafts, and each set has 2 limiting shafts. The limiting shafts are in contact with the rotating block, and the position plate is limited to the top of the rotating block by the limiting shafts.
[0007] As a further improvement of this utility model, the position plate rotates at an angle of 90° in one rotation, and the position plate is in contact with the rotating block.
[0008] As a further improvement of this utility model, the bottom end of the position plate is provided with a slot, and there are two slots and two blocks at the bottom of the position plate, and the slots and blocks are both arranged in a cuboid shape.
[0009] As a further improvement of this utility model, the bottom end of the fixing rod is in contact with a reset switch, and the reset switch is fixedly connected to the base.
[0010] As a further improvement of this utility model, an infrared sensor is provided at the bottom of the front end of the pipette, and the infrared sensor is fixedly connected to the pipette.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. A 96-well electronic pipette, comprising a mounting plate, electric actuators, a rotating block, a limiting shaft, multi-stage electric actuators, a locking block, and an infrared sensor, wherein during pipetting operations in biological experiments, consumables such as experimental pipette tips, multi-well plates, and reagent troughs are first placed sequentially from top to bottom on the vertically arranged mounting plate, limiting them within the limiting groove at the top of the mounting plate. Then, under the control of the controller, the electric actuators are retracted sequentially from top to bottom. Each time an electric actuator retracts, the corresponding rotating block, via the corresponding limiting shaft, controls the consumables at the top of the mounting plate to rotate to the bottom of the pipette. After the corresponding mounting plate rotates to the bottom of the pipette, the controller automatically controls the multi-stage electric actuators to extend and push the fixing rod. The fixing rod then pushes the cuboid locking block into the locking groove at the bottom of the corresponding mounting plate. At this point, the corresponding position plate will pull the corresponding spring upwards along the corresponding limiting axis and separate from the corresponding rotating block. When the corresponding position plate moves up to block the infrared sensor, the multi-stage electric push rod stops. Then, by controlling the pipette to move up and down continuously, pipetting operations can be performed using the consumables on the top of the position plate. By making the position plates vertically distributed on one side of the device, during pipetting operations, the position plates are controlled in sequence to move the limited consumables to the bottom of the pipette. Each time the position plates are controlled to move the limited consumables to the bottom of the pipette, the multi-stage electric push rod is extended to push each position plate containing consumables to the designated height to cooperate with the pipette for pipetting operations. When using the device for pipetting, the overall volume of the device is reduced, thereby reducing the space occupied by the device on the experimental table in the biological laboratory, and thus facilitating the placement of other experimental equipment.
[0013] 2. A 96-well electronic pipette, comprising a multi-stage electric push rod, a fixing rod, and a reset switch, wherein during the process of the control plate rotating the consumable to the bottom of the pipette and then being pushed to a designated height to cooperate with the pipette for pipetting operations, the multi-stage electric push rod is controlled to retract and reset at each step of the pipetting operation. During the reset process of the multi-stage electric push rod, the limiting shaft at the bottom of the corresponding position plate is first reset in the corresponding rotating block under the elastic force of the corresponding spring. After the reset, the fixing rod drives the reset switch to further reset the corresponding electric push rod. This facilitates the automatic reset of the corresponding position plate at each step of the pipetting operation, avoiding interference with other steps in the pipetting operation. Attached Figure Description
[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0015] Figure 1 This is a schematic diagram of the overall structure of a 96-well electronic pipette according to the present invention.
[0016] Figure 2 This is a schematic diagram of the overall structure of a 96-well electronic pipette of this utility model during use.
[0017] Figure 3 This is a cross-sectional view of a 96-well electronic pipette base according to the present invention.
[0018] Figure 4 This utility model relates to a 96-well electronic pipette. Figure 2 A cross-sectional view of the rotating block at the top center.
[0019] Figure 5 This is a schematic diagram of the installation structure of a rotating block for a 96-well electronic pipette according to this utility model.
[0020] In the diagram: 1. Pipette; 2. Controller; 3. Base; 4. Fixing seat; 5. Electric actuator; 6. Rotating block; 7. Spring; 8. Limiting shaft; 9. Positioning plate; 10. Slot; 11. Limiting slot; 12. Multi-stage electric actuator; 13. Fixing rod; 14. Locking block; 15. Reset switch; 16. Infrared sensor. Detailed Implementation
[0021] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] Example 1
[0023] like Figure 1-5 As shown, a 96-well electronic pipette includes a pipette 1, a controller 2 fixedly connected to the top front end of the pipette 1, a base 3 fixedly connected to the bottom end of the pipette 1, a fixing seat 4 fixedly connected to the right end of the base 3, an electric push rod 5 rotatably connected to the left outer side of the fixing seat 4 via a rotating shaft, a rotating block 6 rotatably connected to the other end of the electric push rod 5 via a rotating shaft, and the rotating block 6 rotatably connected to the fixing seat 4 via a rotating shaft, a spring 7 fixedly connected to the inner side of the rotating block 6, a limiting shaft 8 fixedly connected to the other end of the spring 7, a positioning plate 9 fixedly connected to the top end of the limiting shaft 8, a limiting groove 11 formed at the top end of the positioning plate 9, a multi-stage electric push rod 12 fixedly connected to the bottom inner side of the base 3, a fixing rod 13 fixedly connected to the top end of the multi-stage electric push rod 12, and the fixing rod 13 contacts the base 3, and a locking block 14 fixedly connected to the top end of the fixing rod 13.
[0024] Example 2
[0025] like Figure 4 As shown, in order to solve the problem that the rotating block 6 is not easy to stably drive the position plate 9 to rotate, there are 4 sets of limiting shafts 8, and each set of limiting shafts 8 has 2 shafts. The limiting shafts 8 are in contact with the rotating block 6, and the position plate 9 is limited to the top of the rotating block 6 by the limiting shafts 8. By fixing two limiting shafts 8 within the rotating block 6 at the bottom of a single position plate 9, it is convenient for the rotating block 6 to stably drive the position plate 9 to rotate.
[0026] Example 3
[0027] like Figure 1-5 As shown, in order to solve the problem of not being able to control the position plate 9 to accurately rotate the consumable to the bottom of the pipette 1, the position plate 9 rotates at an angle of 90° at a time, and the position plate 9 contacts the rotating block 6. By causing the position plate 9 to rotate the consumable in the top limiting groove 11 by 90 degrees, it is convenient to control the position plate 9 to accurately rotate the consumable to the bottom of the pipette 1.
[0028] Example 4
[0029] like Figure 1 , Figure 3 and Figure 5 As shown, in order to solve the problem of not being able to push the position plate 9 stably upward from the top of the rotating block 6, a slot 10 is provided at the bottom of the position plate 9, and there are two slots and two blocks 14 at the bottom of the position plate 9. The slots 10 and the blocks 14 are both rectangular. By controlling the extension of the multi-stage electric push rod 12, the fixing rod 13 first drives the rectangular blocks 14 to insert into the rectangular slots 10 at the bottom of the position plate 9. When the multi-stage electric push rod 12 continues to extend, it is convenient to push the position plate 9 stably upward from the top of the rotating block 6.
[0030] Example 5
[0031] like Figure 3 As shown, in order to solve the problem that it is not convenient to automatically reset the corresponding position plate 9 after each step of the pipetting operation, the bottom end of the fixing rod 13 is in contact with the reset switch 15, and the reset switch 15 is fixedly connected to the base 3. When each step of the pipetting operation is completed, the multi-stage electric push rod 12 retracts and drives the fixing rod 13 to trigger the reset switch 15 once, which facilitates the automatic reset of the corresponding electric push rod 5 to reset the corresponding position plate 9.
[0032] Example 6
[0033] like Figure 1 and Figure 3 As shown, in order to solve the problem that it is not easy to automatically control the multi-stage electric push rod 12 to stop after pushing the plate 9 containing consumables to the designated height, an infrared sensor 16 is provided at the bottom of the front end of the pipette 1, and the infrared sensor 16 is fixedly connected to the pipette 1. After the multi-stage electric push rod 12 extends and pushes the plate 9 containing consumables to the designated height, the infrared sensor 16 is blocked by the plate 9, which facilitates the automatic control of stopping the multi-stage electric push rod 12.
[0034] In this embodiment, all electrical components in the device are externally powered. During pipetting operations in biological experiments, the experimental pipette tip box, multi-well plate, reagent tank, and other consumables are first placed sequentially from top to bottom on the vertically distributed positioning plate 9, confining them within the limiting groove 11 at the top of the positioning plate 9. Then, under the control of the controller 2, the electric push rods 5 are retracted sequentially from top to bottom. Each time an electric push rod 5 retracts, the corresponding rotating block 6 controls the consumables at the top of the corresponding positioning plate 9 to rotate to the bottom of the pipette 1 via the corresponding limiting shaft 8. After the corresponding positioning plate 9 rotates to the bottom of the pipette 1, the controller 2 automatically controls the multi-stage electric push rod 12 to extend and push the fixing rod 13. Then, the fixing rod 13 pushes the rectangular locking block 14 to insert into the locking groove 10 at the bottom of the corresponding positioning plate 9. At this time, the corresponding positioning plate 9 will move in the direction of the corresponding... After the limiting shaft 8 is stretched upward to the corresponding spring 7, it separates from the corresponding rotating block 6. When the corresponding position plate 9 moves up to block the infrared sensor 16, the multi-stage electric push rod 12 stops. Then, by controlling the pipette 1 to move up and down continuously, the consumables on the top of the position plate 9 can be used for pipetting operations. When one step of the pipetting operation is completed, the controller 2 will automatically control the multi-stage electric push rod 12 to retract and reset. At this time, during the reset process of the multi-stage electric push rod 12, the limiting shaft 8 at the bottom of the corresponding position plate 9 is first reset in the corresponding rotating block 6 under the elastic force of the corresponding spring 7. Then, after the multi-stage electric push rod 12 is reset, it drives the fixing rod 13 to trigger the reset switch 15, further resetting the corresponding electric push rod 5. This makes it convenient to automatically reset the corresponding position plate 9 when each step of the pipetting operation is completed, avoiding interference with other steps in the pipetting operation.
[0035] The above are preferred embodiments of the present invention. The basic principles, main features, and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope thereof. All such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A 96-well electronic pipette, comprising a pipette (1), characterized in that: The pipette (1) is fixedly connected to the top of the front end of the controller (2), the bottom end of the pipette (1) is fixedly connected to the base (3), the right end of the base (3) is fixedly connected to the fixed seat (4), the left end of the outer side of the fixed seat (4) is rotatably connected to the electric push rod (5) through the rotating shaft, the other end of the electric push rod (5) is rotatably connected to the rotating block (6) through the rotating shaft, and the rotating block (6) is rotatably connected to the fixed seat (4) through the rotating shaft. The inner side of the rotating block (6) is fixedly connected to the spring (7), the other end of the spring (7) is fixedly connected to the limiting shaft (8), the top end of the limiting shaft (8) is fixedly connected to the positioning plate (9), the top end of the positioning plate (9) is provided with the limiting groove (11), the bottom end of the inner side of the base (3) is fixedly connected to the multi-stage electric push rod (12), the top end of the multi-stage electric push rod (12) is fixedly connected to the fixing rod (13), and the fixing rod (13) is in contact with the base (3). The top end of the fixing rod (13) is fixedly connected to the locking block (14).
2. The 96-well electronic pipette according to claim 1, characterized in that: There are 4 sets of limiting shafts (8), and there are 2 limiting shafts (8) in a single set. The limiting shafts (8) are in contact with the rotating block (6), and the position plate (9) is limited to the top of the rotating block (6) by the limiting shafts (8).
3. A 96-well electronic pipette according to claim 1, characterized in that: The position plate (9) rotates at an angle of 90°, and the position plate (9) contacts the rotating block (6).
4. A 96-well electronic pipette according to claim 1, characterized in that: The bottom end of the position plate (9) is provided with a slot (10), and there are two slots and two blocks (14) at the bottom of the position plate (9). The slots (10) and the blocks (14) are both rectangular.
5. A 96-well electronic pipette according to claim 1, characterized in that: The bottom end of the fixed rod (13) is in contact with a reset switch (15), and the reset switch (15) is fixedly connected to the base (3).
6. A 96-well electronic pipette according to claim 1, characterized in that: An infrared sensor (16) is provided at the bottom of the front end of the pipette (1), and the infrared sensor (16) is fixedly connected to the pipette (1).