Novel electric pipettor measuring range adjusting mechanism

Abstract

The utility model discloses a novel electric pipettor measuring range adjusting mechanism, which comprises a pipettor main body, a button guide groove is arranged on the pipettor main body, a measuring range adjusting button which is slidably controlled along two sides of the button guide groove is arranged in the button guide groove, a magnet is fixedly arranged on the measuring range adjusting button, and the magnet is fixed on the pipettor main body. A circuit board is arranged in the pipettor main body in the button guide groove; Hall sensors are respectively arranged on the circuit board corresponding to the limit positions, adjusted to the two sides of the button guide groove, of the range adjusting button. According to the utility model, by installing the Hall sensor, magnetic fluxes with different magnitudes transmitted by the button are discriminated, and different subdivided measuring range adjustment is provided for the pipettor, so that the measuring range adjustment rate of the pipettor is improved; by shifting the measuring range adjusting button in two directions, the measuring range of the pipettor can be quickly adjusted to be increased and decreased; reset of the measuring range adjusting button is achieved through the arrangement of the elastic reset piece.

Description

Technical Field

[0001] The utility model relates to the technical field of pipette equipment, in particular to a novel range adjustment mechanism for an electric pipette. Background Art

[0002] Pipettes are widely used in the field of life sciences, such as in industries like biology, pharmaceuticals, and diagnostics. In recent years, laboratory instruments and equipment have started to undergo digital upgrades, and as the most commonly used instrument in biological experiments, intelligent pipettes have also entered the research and development and market launch stage.

[0003] Range adjustment is a basic function of pipettes. Existing electric pipettes generally adjust the pipetting range by pressing a button or touching a touch screen. Pressing the button once or touching the screen once adjusts the value of one digit. To adjust from the minimum range to the maximum range, it needs to be pressed or touched multiple times, and the overall adjustment rate is relatively slow. Content of the Utility Model

[0004] To solve the above technical problems, the utility model designs a novel range adjustment mechanism for an electric pipette.

[0005] The utility model adopts the following technical scheme:

[0006] A novel range adjustment mechanism for an electric pipette includes a pipette body. A button guide groove is provided on the pipette body, and a range adjustment button that slides and controls along both sides of the button guide groove is arranged in the button guide groove. A magnet is fixedly installed on the range adjustment button. A circuit board is arranged in the pipette body within the button guide groove. Hall sensors are respectively arranged on the circuit board corresponding to the range adjustment button adjusted to the extreme positions on both sides of the button guide groove. Through the sliding of the range adjustment button, the magnetic flux sensed by the Hall sensors changes, and the changed magnetic flux is stepped and subdivided to correspond to the adjustment of different values of the units, tens, and hundreds digits of the range, thereby realizing the rapid adjustment of the pipette range.

[0007] Preferably, an adjustment base is fixedly connected to the bottom of the circuit board. Two limit posts are respectively arranged on the adjustment base corresponding to the range adjustment button adjusted to the extreme positions on both sides of the button guide groove. Elastic resetting members are respectively arranged between the two limit posts and the range adjustment button to realize the reset of the range adjustment button.

[0008] Preferably, a central rotating shaft is arranged in the pipette body, and the adjustment base and the circuit board are sleeved on the central rotating shaft.

[0009] Preferably, a guiding groove is formed between the circuit board on the adjustment base and the pipette body, and the range adjustment button slides up and down along the guiding groove and the button guide groove.

[0010] Preferably, the guide groove and the button guide groove are arc-shaped, and an arc-shaped limit plate is fixedly provided on the inner side of the range adjustment button to slide along the guide groove.

[0011] Preferably, a shaft sleeve is sleeved on the central shaft, the shaft sleeve rotates along the shaft, a torsion spring baffle is arranged inside the range adjustment button to abut against the shaft sleeve, and the rotation of the range adjustment button drives the shaft sleeve to rotate.

[0012] Preferably, the elastic reset member is a bidirectional torsion spring, which is sleeved on the rotating shaft sleeve, with both ends of the bidirectional torsion spring clamped between the rotating shaft sleeve and the torsion spring baffle of the range adjustment button, and the ends of the bidirectional torsion spring are installed on two limit columns.

[0013] Preferably, the two limit columns are respectively provided with torsion spring slots, and the ends of the torsion spring are respectively correspondingly clamped in the torsion spring slots.

[0014] The beneficial effects of the utility model are as follows: (1) the utility model installs a Hall sensor to distinguish the different sizes of magnetic flux transmitted by the button, and gives the pipette different subdivisions of range adjustment, thereby improving the pipette range adjustment rate; (2) by toggling the range adjustment button in two directions, the pipette range can be quickly adjusted to increase and decrease; (3) the range adjustment button can be reset by setting an elastic reset member. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model used in an electric pipette;

[0016] Figure 2 It is a schematic diagram of the range adjustment mechanism of the electric pipette of the utility model;

[0017] Figure 3 An enlarged view of the range adjustment mechanism of the electric pipette of the utility model;

[0018] In the figure: 11, range adjustment button; 111, shaft sleeve; 112, torsion spring baffle; 12, pipette body; 121, button guide groove; 13, circuit board; 131, Hall sensor; 14, magnet; 15, bidirectional torsion spring; 16, adjustment base; 161, central shaft; 162, torsion spring slot. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0020] Example: Figures 1 - 3As shown in the figure, a new type of range adjustment mechanism for an electric pipette includes a pipette main body 12. A button guide groove 121 is provided on the pipette main body. A central rotating shaft 161 is provided inside the pipette main body. A rotating shaft sleeve 111 is sleeved on the central rotating shaft. A range adjustment button 11 that moves along the button guide groove is provided in the button guide groove. A torsion spring retaining piece 112 is provided inside the range adjustment button and presses against the rotating shaft sleeve. The range adjustment button rotates around the central rotating shaft through the rotating shaft sleeve for adjustment.

[0021] An adjustment base 16 and a circuit board 13 are sleeved outside the rotating shaft sleeve. The adjustment base and the circuit board are fixed inside the pipette main body by screws. A magnet 14 is fixedly installed on the range adjustment button. Hall sensors 131 are respectively provided on the circuit board corresponding to the two extreme positions on both sides of the button guide groove when the range adjustment button is adjusted. Through the rotation of the range adjustment button, the magnetic flux sensed by the Hall sensor changes, and the changed magnetic flux is stepped and subdivided to correspond to the adjustment of different values of the units, tens, and hundreds of the range, thereby realizing the rapid adjustment of the pipette range.

[0022] Two limit posts are respectively provided on the adjustment base corresponding to the two extreme positions on both sides of the button guide groove when the range adjustment button is adjusted. Torsion spring clamping grooves 162 are respectively provided on the two limit posts. A bi-directional torsion spring 15 is sleeved on the rotating shaft sleeve. Both ends of the bi-directional torsion spring are clamped between the rotating shaft sleeve and the torsion spring retaining piece of the range adjustment button. The end of both ends of the bi-directional torsion spring is correspondingly stuck in the torsion spring clamping groove. When the finger rotates the range adjustment button, the torsion spring retaining piece presses against one leg of the torsion spring, and the torsion spring rotates and compresses. After letting go, the torsion spring resets, the torsion spring leg presses against the torsion spring retaining piece, driving the range adjustment button to rotate. When the torsion spring leg touches the torsion spring clamping groove, the torsion spring stops rotating, and the range adjustment button resets to complete.

[0023] When the present utility model is in use, turning the range adjustment button clockwise increases the pipette range; turning the range adjustment button counterclockwise decreases the pipette range. Through the rotation of the range adjustment button, the magnetic flux sensed by the Hall sensor changes, and the changed magnetic flux is stepped and subdivided to correspond to the adjustment of different values of the units, tens, and hundreds of the range, thereby realizing the rapid adjustment of the pipette range. After letting go, the torsion spring resets, and the range adjustment button resets.

[0024] The above-described embodiments are only a preferred solution of the present utility model, and do not impose any form of limitation on the present utility model. There are other variants and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A novel range adjustment mechanism for an electric pipette, comprising a pipette body, wherein a button guide groove is formed on the pipette body, and a range adjustment button that slides and controls along both sides of the button guide groove is arranged in the button guide groove. It is characterized in that, A magnet is fixedly installed on the range adjustment button. A circuit board is arranged inside the pipette body within the button guide groove. Hall sensors are respectively arranged on the circuit board corresponding to the range adjustment button adjusted to the extreme positions on both sides of the button guide groove. Through the sliding of the range adjustment button, the magnetic flux sensed by the Hall sensors changes, and the changed magnetic flux is stepped and subdivided to correspond to the adjustment of different values of the units, tens, and hundreds digits of the range, thereby realizing the rapid adjustment of the pipette range.

2. The novel range adjustment mechanism of an electric pipette according to claim 1 is characterized in that, The bottom of the circuit board is fixedly connected with an adjustment base. Two limit posts are respectively arranged on the adjustment base corresponding to the range adjustment button adjusted to the extreme positions on both sides of the button guide groove. Elastic reset components are respectively arranged between the two limit posts and the range adjustment button to realize the reset of the range adjustment button.

3. A novel range adjustment mechanism for an electric pipette according to claim 2, characterized in that, A central rotating shaft is arranged inside the pipette body, and the adjustment base and the circuit board are sleeved on the central rotating shaft.

4. A novel range adjustment mechanism for an electric pipette according to claim 3, characterized in that, A guide groove is formed between the circuit board and the pipette body on the adjustment base, and the range adjustment button slides up and down along the guide groove and the button guide groove.

5. A novel range adjustment mechanism for an electric pipette according to claim 4, characterized in that, The guide groove and the button guide groove are arc-shaped, and an arc-shaped limiting plate is fixedly arranged on the inner side of the range adjustment button to slide along the guide groove.

6. A novel range adjustment mechanism for an electric pipette according to claim 5, characterized in that, A rotating shaft sleeve is sleeved on the central rotating shaft, and the rotating shaft sleeve rotates along the rotating shaft. A torsion spring retaining piece is arranged on the inner side of the range adjustment button to abut against the rotating shaft sleeve, and the rotation of the range adjustment button drives the rotation of the rotating shaft sleeve.

7. A novel range adjustment mechanism for an electric pipette according to claim 6, characterized in that, The elastic reset component is a bi-directional torsion spring, and the bi-directional torsion spring is sleeved on the rotating shaft sleeve. The two ends of the bi-directional torsion spring are clamped between the rotating shaft sleeve and the torsion spring retaining piece of the range adjustment button, and the two ends of the bi-directional torsion spring are installed on the two limit posts.

8. A novel range adjustment mechanism for an electric pipette according to claim 7, characterized in that, Torsion spring clamping grooves are respectively arranged on the two limit posts, and the two ends of the torsion spring are respectively clamped in the torsion spring clamping grooves.

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