Pipettor

Abstract

The pipettor comprises a handle, one end of the handle is connected with a shell, the handle is provided with a telescopic mechanism, the telescopic end, penetrating into the shell, of the telescopic mechanism is fixedly provided with a moving plate, and the moving plate is provided with a plurality of clamping holes at intervals in the length direction of the moving plate; the multiple piston pipes are distributed in the length direction of the movable plate at intervals and all installed on the shell, piston rods are installed in the piston pipes, piston bodies are arranged on the end faces of one ends of the piston rods in a sealed mode, and connecting rods are connected to the interiors of the other ends of the piston rods through splines. The end, away from the piston rod, of the connecting rod penetrates out of the shell, a clamping block is fixed to the side wall, facing the movable plate, of the piston rod, and the clamping block is matched with the corresponding clamping hole. The improved pipettor allows an operator to selectively open or close a specific channel as required, and the characteristic greatly improves the flexibility and efficiency of an experiment.

Description

Technical Field

[0001] This application relates to the field of pipettes, and more specifically to a pipette. Background Technology

[0002] A pipette, also called a pipette gun, is a measuring tool used to transfer liquid from one container to another within a certain volume range. Pipettes are widely used in clinical laboratories in fields such as biology and chemistry because of their simple basic structure and ease of use.

[0003] In related technologies, multichannel pipettes are often used for liquid transfer in the laboratory. However, traditional multichannel pipettes cannot selectively control the opening and closing of individual pipetting channels, which is inconvenient to use. Summary of the Invention

[0004] This application provides a pipette that solves the problem that traditional multichannel pipettes cannot selectively control the opening and closing of individual pipetting channels, which is inconvenient to use.

[0005] This application provides a pipette, which includes:

[0006] A handle, one end of which is connected to a housing, and a telescopic mechanism is installed on the handle. A movable plate is fixed to the telescopic end of the telescopic mechanism that extends into the housing. The movable plate has multiple slots spaced apart along its length.

[0007] Multiple piston tubes are spaced apart along the length of the movable plate and are all installed in the housing. A piston rod is installed inside each piston tube. A piston body is sealed on one end face of the piston rod, and a connecting rod is internally splined at the other end. The end of the connecting rod away from the piston rod extends through the housing. A locking block is fixed to the side wall of the piston rod facing the movable plate, and the locking block is adapted to a corresponding locking hole.

[0008] In one embodiment, the telescopic mechanism includes:

[0009] A telescopic rod, which is slidably connected to the inside of the handle, with one end of the telescopic rod extending through the outside of the handle and through the inside of the housing;

[0010] A button, one end of which is rotatably mounted on the handle via a torsion spring, and the other end of which is hinged to the other end of the telescopic rod.

[0011] In one embodiment, the pipette further includes:

[0012] A guide plate is fixed inside the housing. A limit ring is provided on the side of the guide plate facing the piston rod, and the piston rod is disposed inside the limit ring.

[0013] In one embodiment, the pipette further includes:

[0014] An elastic telescopic member is disposed inside the housing, with one end of the elastic telescopic member fixed to the housing and the other end fixed to the movable plate.

[0015] In one embodiment, the elastic telescopic member is provided in two sets, and the two sets of elastic telescopic members are distributed on both sides of the telescopic end of the telescopic mechanism.

[0016] In one embodiment, the elastic telescopic member includes:

[0017] A guide rod is fixed inside the housing, and a spring is sleeved on the outer wall of the guide rod. A guide block is slidably connected to the outer wall of the guide rod. One end of the spring is fixed to the guide block, and the other end of the spring abuts against the inner side wall of the housing. The guide block is fixed to the movable plate.

[0018] In one embodiment, a knob is installed at one end of the connecting rod that extends outside the housing, and the knob is marked with a switch.

[0019] In one embodiment, a pipette is installed at the drain port of the piston tube.

[0020] In one embodiment, an observation window is provided on one side of the housing for observing the movement of the piston body.

[0021] In one embodiment, the housing has scale lines on one side of the observation window.

[0022] The beneficial effects of the technical solutions provided in this application include:

[0023] The movable plate has multiple locking holes spaced along its length. These holes engage with locking blocks on the piston rod to lock and unlock the channels. The design of these holes ensures that each piston tube can be controlled independently. A connecting rod is internally connected to the other end of the piston rod via a spline. This connection method ensures that the connecting rod can transmit rotational torque while allowing it to slide axially within a certain range inside the piston rod. During the rotation of the connecting rod, when the locking block aligns with the corresponding locking hole, it engages, thus controlling the opening and closing of the channel. The improved pipette allows the operator to selectively open or close specific channels as needed. This feature greatly improves the flexibility and efficiency of experiments, especially in experiments requiring multi-step, multi-channel liquid transfer. Channel opening and closing control is achieved through a simple rotational motion, making operation convenient and quick, reducing operational difficulty and the risk of misoperation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view schematic diagram of the pipette structure;

[0026] Figure 2 This is a frontal view of the internal structure of the handle;

[0027] Figure 3 This is a frontal view of the internal structure of the shell;

[0028] Figure 4 for Figure 3 A magnified structural diagram of A in the diagram.

[0029] In the diagram: 1. Handle; 2. Telescopic mechanism; 21. Telescopic rod; 22. Button; 23. Hinge rod; 3. Housing; 4. Moving plate; 41. Locking hole; 5. Piston tube; 51. Piston rod; 52. Piston body; 53. Connecting rod; 54. Locking block; 55. Knob; 6. Guide plate; 7. Elastic telescopic component; 71. Guide rod; 72. Spring; 73. Guide block; 8. Pipette; 9. Observation window. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0031] This application provides a pipette that solves the problem that traditional multichannel pipettes cannot selectively control the opening and closing of individual pipetting channels, which is inconvenient to use.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, this application provides a pipette, which includes:

[0033] Handle 1, one end of handle 1 is connected to housing 3, handle 1 is equipped with telescopic mechanism 2, telescopic mechanism 2 extends into housing 3 and telescopic end is fixed with moving plate 4, moving plate 4 is spaced out with multiple locking holes 41 along its own length direction; multiple piston tubes 5, multiple piston tubes 5 are spaced out along the length direction of moving plate 4 and are all installed in housing 3, piston tube 5 is installed in piston tube 5, piston rod 51 is installed in piston tube 5, piston body 52 is sealed on one end face of piston rod 51 and connecting rod 53 is connected to the other end of piston rod 51 by spline, connecting rod 53 extends into housing 3 at the end away from piston rod 51, locking block 54 is fixed on the side wall of piston rod 51 facing moving plate 4, locking block 54 is adapted to the corresponding locking hole 41.

[0034] In this embodiment, one end of the handle 1 is tightly connected to the housing 3, providing a stable grip point for the user; at the same time, a telescopic mechanism 2 is built in to drive the movement of the moving plate 4. The telescopic end of the telescopic mechanism 2 passes through the housing 3 and is fixedly connected to the moving plate 4. The movement of the moving plate 4 inside the housing 3 is achieved through telescopic movement; the moving plate 4 has multiple locking holes 41 carefully opened along its length. These locking holes 41 are the key interfaces connecting the piston rod 51 and the moving plate 4. Each locking hole 41 corresponds to a piston tube 5. By cooperating with the locking block 54 on the piston rod 51, the channel can be independently locked and unlocked; multiple piston tubes 5 are evenly distributed along the length of the moving plate 4 and are firmly installed in the housing 3, forming the core working unit of the pipette. Each piston tube 5 is equipped with a piston rod 51, one end of which is tightly connected to the moving plate 4. The sealing device is equipped with a piston body 52 for efficient liquid suction and discharge within the piston tube 5. The other end of the piston rod 51 is connected to the connecting rod 53 via a spline. This design ensures the stability of the connection while allowing the connecting rod 53 a certain axial sliding space within the piston rod 51, providing the possibility for subsequent rotation and liquid injection operations. One end of the connecting rod 53 extends outside the housing 3 for easy rotation by the user. By rotating the connecting rod 53, the piston rod 51 can be rotated together. A locking block 54 is fixed to the side wall of the piston rod 51 facing the moving plate 4. When the piston rod 51 rotates to a specific position, the locking block 54 will perfectly align with the corresponding locking hole 41, thereby controlling the opening and closing state of the corresponding channel. At this time, by moving the moving plate 4 up and down, the piston rod 51 moves up and down, thereby realizing the liquid injection operation of the piston tube 5. Users can freely choose to open or close any one or more channels according to experimental needs, which greatly improves the flexibility and efficiency of experiments. The opening and closing of channels can be easily controlled by a simple rotation action, reducing the difficulty of operation and the risk of misoperation. The overall structure is compact and stable, and the precise cooperation between the components ensures the reliability and accuracy of the pipette during long-term use.

[0035] In one embodiment, such as Figure 2 As shown, the telescopic mechanism 2 includes: a telescopic rod 21, which is slidably connected to the inside of the handle 1, and one end of the telescopic rod 21 extends through the outside of the handle 1 and through the inside of the housing 3; a button 22, one end of which is rotatably mounted on the handle 1 via a torsion spring, and the other end of which is hinged to the other end of the telescopic rod 21 by a hinge rod 23.

[0036] In this embodiment, one end of the telescopic rod 21 extends through the handle 1 and further into the housing 3, where it is fixedly connected to the movable plate 4. This through-through design allows the telescopic rod 21 to directly transmit force to the movable plate 4, thereby driving the movable plate 4 to move within the housing 3. One end of the button 22 is rotatably mounted on the handle 1 via a torsion spring. This design gives the button 22 a certain degree of rotational freedom while ensuring a stable connection between the button 22 and the handle 1. The introduction of the torsion spring provides the button 22 with a reset force, enabling the button 22 to automatically return to its initial position when no external force is applied, thus ensuring continuous and stable operation. The hinge rod 23 serves as a transmission bridge between the button 22 and the telescopic rod 21. One end of the hinge rod 23 is connected to the button 22, and the other end is connected to the telescopic rod 21, forming a flexible transmission system. When the user presses button 22, the hinge rod 23 transmits force to the telescopic rod 21, driving it to move forward; conversely, when the user releases button 22, the force of the torsion spring is transmitted through button 22 and hinge rod 23 to the telescopic rod 21, causing it to move backward. This transmission mechanism ensures that the telescopic rod 21 can extend and retract in response to the operation of button 22.

[0037] In one embodiment, such as Figure 3 As shown, the pipette also includes a guide plate 6, which is fixed inside the housing 3. A limit ring is provided on the side of the guide plate 6 facing the piston rod 51, and the piston rod 51 is disposed inside the limit ring.

[0038] In this embodiment, the guide plate 6 is firmly fixed inside the housing 3, serving as a guiding and supporting structure for the piston rod 51 during its movement. A limiting ring is provided on the side of the guide plate 6 facing the piston rod 51. This limiting ring provides a precise movement track for the piston rod 51. The piston rod 51 is cleverly positioned within the limiting ring. This design ensures that the piston rod 51 can maintain stable linear motion during its movement, avoiding a decrease in accuracy due to shaking or offset, while also not affecting the rotation of the piston rod 51.

[0039] In one embodiment, such as Figure 3 As shown, the pipette also includes an elastic telescopic member 7, which is disposed inside the housing 3, with one end of the elastic telescopic member 7 fixed to the housing 3 and the other end fixed to the moving plate 4.

[0040] In this embodiment, the elastic telescopic component 7 is cleverly disposed inside the housing 3. One end of it is securely fixed to the housing 3, and the other end is fixedly fixed to the moving plate 4. As an elastic element, the elastic telescopic component 7 can deform when subjected to external force and return to its original shape after the external force disappears. This characteristic allows it to provide stable support and cushioning for the moving plate 4 during pipette operation. The introduction of the elastic telescopic component 7 provides a stable support structure for the moving plate 4, effectively reducing the swaying and displacement of the moving plate during movement, thereby improving the overall stability of the pipette and enhancing the user experience.

[0041] In one embodiment, such as Figure 3 As shown, there are two sets of elastic telescopic members 7, which are distributed on both sides of the telescopic end of the telescopic mechanism 2.

[0042] In this embodiment, when the telescopic mechanism 2 extends or retracts, the two sets of elastic telescopic members 7 work together to effectively absorb and disperse the impact force generated by the telescopic movement, thereby protecting the internal structure of the pipette from damage. Simultaneously, they also ensure smooth movement of the telescopic end, improving the pipette's operational accuracy and stability.

[0043] In one embodiment, such as Figure 3 As shown, the elastic telescopic component 7 includes: a guide rod 71, which is fixed inside the housing 3, and a spring 72 is sleeved on the outer wall of the guide rod 71. A guide block 73 is slidably connected to the outer wall of the guide rod 71. One end of the spring 72 is fixed to the guide block 73, and the other end of the spring 72 abuts against the inner side wall of the housing 3. The guide block 73 is fixed to the movable plate 4.

[0044] In this embodiment, the guide rod 71 is fixed inside the housing 3, serving as a support and guide structure for the spring 72 and the guide block 73. The stability of the guide rod 71 ensures the reliability of the entire elastic telescopic member 7. The spring 72 is sleeved on the outer wall of the guide rod 71, providing the main elastic force for the elastic telescopic member 7. One end of the spring 72 is fixed to the guide block 73, and the other end abuts against the inner side wall of the housing 3. This design allows the spring 72 to deform when subjected to external force and return to its original shape after the external force disappears, thereby providing stable support and buffering for the moving plate 4. The guide block 73 is slidably connected to the outer wall of the guide rod 71 and fixed to the moving plate 4. The guide block 73 moves with the moving plate 4 and is simultaneously subjected to the elastic force of the spring 72, ensuring the stability and accuracy of the moving plate 4 during the movement process.

[0045] In one embodiment, such as Figure 1 and Figure 3 As shown, a knob 55 is installed at one end of the connecting rod 53 that extends through the housing 3, and the knob 55 is marked with a switch.

[0046] In this embodiment, the knob 55 is installed at one end of the connecting rod 53 that extends through the housing 3, making it convenient for the user to operate. The knob 55 is provided with a switch mark, so that the user can clearly identify the switch state of the knob 55 and operate it accurately. This ensures that the user can clearly understand the current state of the knob 55 and thus know whether the piston tube 5 is closed.

[0047] In one embodiment, such as Figure 1 As shown, a pipette 8 is installed at the drain port of piston tube 5.

[0048] In this embodiment, the piston tube 5 is connected to the pipette 8 through its drain port, so that the liquid in the piston tube 5 can be accurately transferred to the pipette 8 for subsequent liquid operations or analysis.

[0049] In one embodiment, such as Figure 1 As shown, an observation window 9 is provided on one side of the housing 3. The observation window 9 is used to observe the movement of the piston body 52.

[0050] In this embodiment, through the observation window 9, the user can intuitively see the movement of the piston body 52 within the housing 3, thereby determining whether the piston body 52 is operating normally.

[0051] In one embodiment, such as Figure 1 As shown, the housing 3 has scale lines on one side of the observation window 9.

[0052] In this embodiment, the user can intuitively see the inside of the housing 3 through the observation window 9, while the scale line provides the user with a precise reference standard to more accurately judge or record the movement or position of internal components (such as piston body 52). This design not only improves the readability and ease of use of the device, but also helps to improve the accuracy and reliability of the measurement.

[0053] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0054] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pipette, characterized in that It includes: Handle (1), one end of the handle (1) is connected with the shell (3), the handle (1) is installed with telescopic mechanism (2), the telescopic mechanism (2) is through to the telescopic end fixed with moving plate (4) in the shell (3), the moving plate (4) is spaced apart along the length direction of itself and is provided with a plurality of clamping holes (41); A plurality of piston tubes (5), a plurality of the piston tubes (5) are spaced apart along the length direction of the moving plate (4) and are installed in the shell (3), the piston tube (5) is installed with piston rod (51), one end of the piston rod (51) is provided with piston body (52) in the end face sealing, and the other end is internally splined with connecting rod (53), the connecting rod (53) is away from the one end of the piston rod (51) and is penetrated to the outside of the shell (3), the piston rod (51) is fixed with the clamping block (54) on the side wall facing the moving plate (4), the clamping block (54) is matched with the corresponding clamping hole (41).

2. The pipette of claim 1, wherein The telescopic mechanism (2) includes: Telescopic rod (21), the telescopic rod (21) is slidingly connected in the inside of the handle (1), and one end of the telescopic rod (21) is penetrated to the outside of the handle (1) and is penetrated to the inside of the shell (3); Button (22), one end of the button (22) is rotatably installed in the handle (1) through the torsion spring, and the other end is hinged with the other end of the telescopic rod (21).

3. The pipette of claim 1, wherein The pipette further includes: Guide plate (6), the guide plate (6) is fixed in the shell (3), and the guide plate (6) is provided with a limiting ring on the side facing the piston rod (51), and the piston rod (51) is arranged in the limiting ring.

4. The pipette of claim 1, wherein The pipette further includes: Elastic telescopic piece (7), the elastic telescopic piece (7) is arranged in the shell (3), and one end of the elastic telescopic piece (7) is fixed with the shell (3), and the other end is fixed with the moving plate (4).

5. The pipette of claim 4, wherein The elastic telescopic piece (7) is provided with two groups, and the two groups of elastic telescopic pieces (7) are distributed on both sides of the telescopic end of the telescopic mechanism (2).

6. The pipette of claim 4, wherein The elastic telescopic piece (7) includes: Guide rod (71), the guide rod (71) is fixed in the shell (3), and the outer wall of the guide rod (71) is sleeved with a spring (72), and the outer wall of the guide rod (71) is slidingly connected with a guide block (73), one end of the spring (72) is fixed with the guide block (73), and the other end is abutted with the inner side wall of the shell (3), and the guide block (73) is fixed with the moving plate (4).

7. The pipette of claim 1, wherein The end of the connecting rod (53) penetrating out of the shell (3) is provided with a knob (55) provided with switch mark.

8. The pipette according to claim 1, wherein The discharge port of the piston tube (5) is provided with a pipette tube (8).

9. The pipette according to claim 1, wherein One side of the shell (3) is provided with an observation window (9) for observing the movement of the piston body (52).

10. The pipette according to claim 9, wherein The shell (3) is provided with a scale line at the side of the observation window (9).

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