Measuring range adjusting device for pipette

Abstract

The utility model provides a pipette measuring range adjusting device, which relates to the technical field of pipettes, and comprises a shell, and a moving block which slides along a longitudinal chute is arranged on the outer wall of the shell; a fine adjustment assembly is arranged in the shell, one end of the fine adjustment assembly is connected with the pressing rod through a threaded rod, and the other end is connected with a connecting pipe extending out of the shell through a piston rod; the moving block is connected with the fine adjustment assembly through the sliding groove. A gravity sensing alarm is arranged at the bottom end of the inner wall of the pressing rod, a pointer is fixedly connected to the upper end of the outer wall of one side of the pressing rod, and a measuring range adjusting code is fixedly connected to the outer wall of the upper end of the shell. The utility model solves the problems that the pipette is damaged due to improper operation of the conventional pipette, the accuracy of sucking liquid by the pipette is reduced, the required time is long, and the experiment efficiency is influenced.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a pipette range adjustment device. Background Technology

[0002] In laboratories, pipettes are commonly used liquid transfer tools, widely applied in experimental procedures in fields such as biology, chemistry, and medicine. The main functions of a pipette include aspirating, transferring, and dispensing liquids, requiring high precision and reliability during operation. To adapt to the needs of different experiments, the adjustable volume range of a pipette is particularly important. Existing pipettes are typically designed with multiple volume ranges, requiring users to manually adjust the range knob or other adjustment devices to meet different volume requirements. To ensure experimental accuracy, the precision and convenience of volume range adjustment are crucial; however, traditional adjustment methods often require time and are prone to inaccurate adjustments, leading to experimental errors or equipment damage.

[0003] However, existing pipette adjustment mechanisms have some problems. First, when adjusting the volume range of a pipette, turning the knob clockwise adjusts from a large volume to a small volume, and vice versa. To adjust from a small volume to a large volume, the knob needs to be turned counterclockwise. After use, the pipette range should be adjusted to its maximum value. Taking a 1000 μL pipette as an example, in actual use, if adjusting from 200 μL to 1000 μL, the button can easily be turned out of range due to inertia, causing the internal mechanical parts of the pipette to jam. Sometimes, after use, the pipette is forgotten to be adjusted to the maximum volume and is simply put back in its place. Both of these issues can damage the pipette, reduce the accuracy of liquid aspiration, and take longer, affecting experimental efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pipette range adjustment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pipette range adjustment device, comprising a housing, wherein a movable block is provided on the outer wall of the housing and slides along a longitudinal groove; a fine-tuning component is provided inside the housing, one end of the fine-tuning component is connected to a pressing rod via a threaded rod, and the other end is connected to a connecting pipe extending outside the housing via a piston rod; the movable block is connected to the fine-tuning component via the groove; a gravity sensor alarm is provided at the bottom of the inner wall of the pressing rod, a pointer is fixedly connected to the upper end of one side of the outer wall of the pressing rod, and a range adjustment code is fixedly connected to the upper outer wall of the housing.

[0006] In a preferred embodiment, a display is provided on one side of the outer wall of the housing, and an indicator slot through hole is provided on one side of the outer wall of the movable block, the indicator slot through hole being located on the outer surface of the display.

[0007] In a preferred embodiment, a handle is fixedly connected to the upper end of one side of the outer wall of the housing, a connecting tube is fixedly connected to the lower end of the housing, and a straw is movably connected to the lower end of the connecting tube.

[0008] In a preferred embodiment, a spring is movably connected to the outer wall of the upper end of the piston rod.

[0009] In one preferred embodiment, the pointer on one side of the outer wall of the pressing rod is connected to the range adjustment code connected to the upper end of the housing.

[0010] In a preferred embodiment, the fine-tuning component connected to one side of the moving block is slidably connected to the inner wall of the housing.

[0011] In a preferred embodiment, the movable block is movably connected to one side of the outer wall of the housing via a sliding groove.

[0012] In a preferred embodiment, the gravity sensor alarm mainly consists of a gravity sensor, a control module, and an alarm.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In use, the design of the slide and moving block allows users to quickly switch to different volume ranges, significantly reducing adjustment time while ensuring accuracy. The fine-tuning component and threaded rod enable precise adjustment of the pipette range, ensuring the accuracy of pipetting operations and effectively reducing experimental errors. The display provides clear operating information, allowing users to understand the current settings in real time. The indicator slot through hole and the outer wall markings provide intuitive indication of the adjustment position, facilitating quick adjustments by the user.

[0015] 2. When using this utility model, the built-in gravity sensor alarm will sound an alarm if no change in the position of the pipette is detected for a long time, reminding the user to adjust the volume range in time to prevent damage to the equipment due to forgetting to adjust. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of a pipette range adjustment device provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the external structure of a pipette range adjustment device provided by this utility model.

[0018] Figure 3This is a cross-sectional disassembly diagram of a pipette range adjustment device provided by this utility model.

[0019] Figure 4 This is a disassembly diagram of the internal structure of a pipette range adjustment device provided by this utility model.

[0020] Figure 5 This is a disassembly diagram of the internal structure of a pipette range adjustment device provided by this utility model.

[0021] Legend:

[0022] 1. Housing; 2. Pressing block; 3. Display; 4. Handle; 5. Range adjustment code; 6. Slide groove; 7. Connecting tube; 8. Suction tube; 9. Moving block; 10. Indicator slot through hole; 11. Fine adjustment assembly; 12. Threaded rod; 13. Pressing rod; 14. Gravity sensor alarm; 15. Pointer; 16. Spring; 17. Piston rod. (10. Indicator slot through hole) Detailed Implementation

[0023] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0024] It should be noted that many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Example 1

[0026] like Figures 1-5As shown, this utility model provides a technical solution: a pipette range adjustment device, comprising: a housing 1, a display 3 provided on one outer wall of the housing 1, a sliding groove 6 formed on one outer wall of the housing 1, a movable block 9 slidably connected to one side of the inner wall of the sliding groove 6, the movable block 9 being movably connected to one side of the outer wall of the housing 1 via the sliding groove 6, an indicator slot through hole 10 formed on one outer wall of the movable block 9, the indicator slot through hole 10 being correspondingly connected to the display 3 provided on one outer wall of the housing 1, and a micro-... The fine-tuning component 11, which is connected to one side of the moving block 9, is slidably connected to one side of the inner wall of the housing 1. A threaded rod 12 is movably connected to the upper end of the fine-tuning component 11. A pressing rod 13 is movably connected to the outer wall of the upper end of the threaded rod 12. A gravity sensor alarm 14 is fixedly connected to the bottom of the inner wall of the pressing rod 13. A pointer 15 is fixedly connected to the upper end of the outer wall of one side of the pressing rod 13. The pointer 15 on the outer wall of one side of the pressing rod 13 is connected to the range adjustment code 5 connected to the upper end of the housing 1. The range adjustment code 5 is fixedly connected to the outer wall of the upper end of the housing 1.

[0027] In this embodiment, a housing 1 is designed, with a display 3 on one outer wall and a groove 6 on the other outer wall. A movable block 9 is slidably connected to one side of the inner wall of the groove 6. One side of the movable block 9 is fixedly connected to a fine-tuning component 11 on one side of the inner wall of the housing 1. Therefore, the movable block 9 can slide on one side of the outer wall of the housing 1 through the groove 6. An indicator slot through hole 10 is provided on one side of the outer wall of the movable block 9. The number of positions on the outer wall of the housing 1 is divided into units, tens, hundreds, and thousands, and the indicator slot through hole 10 can correspond to each of them. A threaded rod 12 is fixedly connected to the upper end of the fine-tuning component 11. The upper end of the threaded rod 12 is threadedly connected to the pressing rod 13. Therefore, according to the need to adjust the number of positions, the movable block 9 is pulled to the position that needs to be changed. At this time, the fine-tuning component 11 and the pressing rod 13 can be moved to... The upper outer wall of the housing 1 is equipped with a range adjustment code 5, which has Arabic numerals from 0 to 9 arranged in a ring on its outer wall. A pointer 15 is located on one side of the outer wall of the pressing rod 13. The pressing rod 13 can be rotated according to specific needs. The pressing rod 13 can press down the components inside the fine-tuning assembly 11 through the threaded rod 12, thereby enabling fine-tuning. This device reduces the time required to adjust the pipette. A gravity sensor alarm 14 is located at the lower end of the inner wall of the pressing rod 13. If the gravity sensor does not detect that the pipette has changed position due to external force for more than 20 minutes and the range has not been adjusted to the maximum, a red light will flash and an audible alarm will be automatically emitted to remind the experimenter to adjust the range. This can prevent the pipette spring 16 from being damaged due to forgetting to adjust it to the maximum range after use.

[0028] like Figures 1-5As shown, a pressing block 2 is movably connected to one side of the outer wall of the housing 1, a handle 4 is fixedly connected to the upper end of one side of the outer wall of the housing 1, a connecting tube 7 is fixedly connected to the lower end of the housing 1, a straw 8 is movably connected to the lower end of the connecting tube 7, a piston rod 17 is movably connected to one side of the inner wall of the connecting tube 7, a spring 16 is movably connected to the upper outer wall of the piston rod 17, and the upper outer wall of the piston rod 17 is movably connected to the fine-tuning component 11 through the spring 16.

[0029] In this embodiment, a connecting tube 7 is provided at the lower end of the housing 1, and a straw 8 is connected to the lower end of the connecting tube 7. The straw 8 can be connected to the connecting tube 7 by pressing. A handle 4 is provided on the outer wall of the upper end of the housing 1. The device can be gripped by holding the housing 1 and pressing against the handle 4. A piston rod 17 is provided on the upper end of the inner wall of the connecting tube 7, and the upper end of the piston rod 17 is movably connected to the lower end of the fine-tuning component 11 through a spring 16. Therefore, when the fine-tuning component 11 is acted upon by the threaded rod 12, its internal components will be fine-tuned and move longitudinally. At this time, the piston rod 17 will be squeezed by the spring 16, and then the piston rod 17 will slide on the inner wall of the connecting tube 7, thereby enabling adjustment.

[0030] Working principle:

[0031] like Figure 1-5As shown, this device is for adjusting a pipette. Its design includes a housing 1, with a display 3 mounted on one outer wall of the housing 1 to show relevant operating information. On the other outer wall of the housing 1, a groove 6 is provided, with a movable block 9 slidably connected to the inner wall of the groove 6. The movable block 9 is fixedly connected to the inner wall of the housing 1 via a fine-tuning assembly 11, allowing it to slide along the groove 6 on the outer wall of the housing 1. One side of the movable block 9 has an indicator slot through-hole 10, corresponding to the units, tens, hundreds, and thousands place markings on the outer wall of the housing 1, used to indicate the currently adjusted volume range. A threaded rod 12 is connected to the upper end of the fine-tuning assembly 11, which is threadedly connected to a pressing rod 13. The user can slide the movable block 9 to the desired position, causing the fine-tuning assembly 11 and the pressing rod 13 to reach the correct position. The upper outer wall of the housing 1 is equipped with a range adjustment code 5, its surface surrounded by numbers from 0 to 9. The outer wall of the pressing lever 13 is equipped with a pointer 15. Users can rotate the pressing lever 13 and use the threaded rod 12 to push down the internal components of the fine-tuning assembly 11, achieving precise fine-tuning and reducing the time required to adjust the pipette. A gravity sensor alarm 14 is located at the lower end of the pressing lever 13. The gravity sensor alarm mainly consists of a gravity sensor, a control module, and an alarm. If the gravity sensor does not detect a change in the pipette position within twenty minutes, and the volume is not adjusted to the maximum, the control module will receive a signal from the sensor and automatically issue an alarm sound and light warning to remind the experimenter to adjust the volume, preventing damage to the pipette spring 16 due to forgetting to adjust to the maximum volume. A connecting tube 7 is connected to the lower end of the housing 1, and a pipette 8 is connected to its bottom. The pipette 8 and connecting tube 7 can be connected by pressing. A handle 4 is installed on one side of the upper outer wall of the housing 1 for easy gripping and operation. A piston rod 17 is installed on the upper end of the inner wall of the connecting tube 7, and the upper end of the piston rod 17 is movably connected to the lower end of the fine-tuning assembly 11 via a spring 16. When the fine-tuning component 11 is acted upon by the threaded rod 12, the internal components are fine-tuned and move longitudinally, and the piston rod 17 is compressed by the spring 16. The piston rod 17 slides on the inner wall of the connecting pipe 7 to complete the adjustment operation.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0033] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipette range adjustment device, comprising a housing (1), characterized in that: The outer wall of the housing (1) is provided with a movable block (9) that slides along the longitudinal groove (6); the housing (1) is provided with a fine adjustment component (11), one end of the fine adjustment component (11) is connected to the pressing rod (13) through a threaded rod (12), and the other end is connected to the connecting pipe (7) extending to the outside of the housing (1) through a piston rod (17); the movable block (9) is connected to the fine adjustment component (11) through the groove (6); the bottom of the inner wall of the pressing rod (13) is provided with a gravity sensor alarm (14), a pointer (15) is fixedly connected to the upper end of the outer wall of one side of the pressing rod (13), and a range adjustment code (5) is fixedly connected to the upper outer wall of the housing (1).

2. The pipette range adjustment device according to claim 1, characterized in that: The outer wall of the housing (1) is provided with a display (3), and the outer wall of the moving block (9) is provided with an indicator slot through hole (10), which is located on the outer surface of the display (3).

3. The pipette range adjustment device according to claim 1, characterized in that, A handle (4) is fixedly connected to the upper end of the outer wall of one side of the housing (1), and a connecting tube (7) is fixedly connected to the lower end of the housing (1). A straw (8) is movably connected to the lower end of the connecting tube (7).

4. The pipette range adjustment device according to claim 1, characterized in that: A spring (16) is movably connected to the outer wall of the upper end of the piston rod (17).

5. The pipette range adjustment device according to claim 1, characterized in that: The pointer (15) on one side of the outer wall of the pressing rod (13) is connected to the range adjustment code (5) connected to the upper end of the housing (1).

6. The pipette range adjustment device according to claim 1, characterized in that: The fine-tuning component (11) connected to one side of the moving block (9) is slidably connected to one side of the inner wall of the housing (1).

7. The pipette range adjustment device according to claim 1, characterized in that: The movable block (9) is movably connected to one side of the outer wall of the housing (1) via a slide (6).

8. The pipette range adjustment device according to claim 1, characterized in that: The gravity sensor alarm (14) mainly consists of a gravity sensor, a control module and an alarm.

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