Pipettor convenient to disassemble

Abstract

The utility model discloses a pipettor convenient to disassemble, which comprises a gun body, a connecting pipe arranged in the gun body, a gun head connected below the connecting pipe, two groups of connecting clamping blocks arranged on the connecting pipe, and a gun head push-out mechanism comprising a push-out button and a clamping groove matched with the connecting clamping blocks, a connecting box is connected below the first connecting rod, two groups of first clamping blocks are arranged in the connecting box, the first clamping blocks are fixedly connected with the clamping grooves through second connecting rods, springs are arranged on the second connecting rods, two groups of second clamping blocks are further arranged between the two groups of first clamping blocks, and the second clamping blocks are in pin shaft connection with the first connecting rods through movable rods; after the push-out button is pressed, through connection and cooperation of the connecting rods, the clamping blocks and the like, a hand holding the gun head does not need to move in the whole process in the gun head replacement and pipetting operation process, only the thumb pressing position needs to be adjusted, operation is convenient, stability is higher, loss caused by the fact that the gun body slides off in the gun head replacement process is avoided, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the field of pipettes, in particular to a pipette which is easy to disassemble. Background Art

[0002] A pipette, also known as a pipette gun, is a laboratory tool used to transfer liquids quantitatively, and is mainly used in biology, chemistry, medical manufacturing and other fields. When a common pipette is working, it will extract different liquids, and at this time, the tip needs to be replaced. For example, a pipette that is easy to disassemble is disclosed in (Announcement No. CN218795991U). By setting two pressing rods under the gun body, when the pipetting operation is completed and the tip needs to be replaced, the hand holding the gun body needs to be moved from under the gun body to the pressing rods and the thumb and index finger need to be used to press the two pressing rods respectively to remove the gun head, which makes the operation inconvenient, and the gun body may slip and be damaged during the operation. Therefore, it is necessary to make improvements. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a pipette that is easy to disassemble, so as to solve the problems existing in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A pipette that is easy to disassemble comprises a gun body, a connecting tube is provided in the gun body, a gun head is connected to the lower part of the connecting tube, two groups of connecting blocks are provided on the connecting tube, a piston rod is provided on the top of the gun body, and a gun head pushing mechanism is provided on the gun body, the gun head pushing mechanism comprises a pushing button and a slot matching with the connecting block, a reset spring is provided in the pushing button, first connecting rods are connected to the two sides of the pushing button, a connecting box is connected to the lower part of the first connecting rod, two groups of first blocks are provided in the connecting box, the first blocks are fixedly connected to the slot through the second connecting rod, the connecting box has a through hole for the first connecting rod and the second connecting rod to pass through, the second connecting rod has a spring, two groups of second blocks are provided between the two groups of first blocks, the second blocks are connected to the pin shaft of the first connecting rod through a movable rod, and a limit block is provided in the connecting box on the side close to the slot.

[0006] Furthermore, the connecting card block is concave, and the card slot is round.

[0007] Furthermore, the second card block is a right-angled trapezoid, and the height of the second card block is greater than the length of the engaging portion of the connecting card block.

[0008] Furthermore, the gun body is provided with a hook.

[0009] Furthermore, the gun body is provided with a protective shell.

[0010] Furthermore, an anti-slip pad is provided outside the protective shell.

[0011] The beneficial effect of the utility model is that, by arranging a gun head ejection mechanism on the gun body, after pressing the ejection button, through the connection and cooperation of various connecting rods, card blocks, etc., the hand holding the gun head does not need to move during the replacement of the gun head and the pipetting operation, and only the thumb pressing position needs to be adjusted. This is convenient for operation and has higher stability. The gun body will not slip during the replacement of the gun head, causing losses, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the gun head of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure inside the connection box of the utility model when the gun head is connected;

[0015] Figure 4 This is a schematic diagram of the structure inside the connection box of the utility model when the gun head is pushed out;

[0016] Figure 5 This is a schematic diagram of the connection structure between the second clamping block and the first connecting rod of the utility model;

[0017] In the figure: 1, gun body; 2, protective shell; 3, connecting tube; 301, connecting block; 4, gun head; 5, piston rod; 6, hook; 7, gun head ejection mechanism; 701, ejection button; 702, first connecting rod; 703, slot; 704, second connecting rod; 705 connecting box; 706, first block; 707, second block; 708, limit block; 709, movable rod; 710, spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0019] A pipette that is easy to disassemble, such as Figure 1-5As shown, it includes a gun body 1, wherein the gun body 1 has a connecting tube 3, a gun head 4 is connected to the lower part of the connecting tube 3, two groups of connecting blocks 301 are provided on the connecting tube 3, a piston rod 5 is provided on the top of the gun body 1, and a gun head ejection mechanism 7 is provided on the gun body 1, wherein the gun head ejection mechanism 7 includes an ejection button 701 and a card slot 703 matched with the connecting block 301, a reset spring is provided in the ejection button 701, and first connecting rods 702 are connected to both sides of the ejection button 701, and the first connecting rods A connection box 705 is connected below 702, and the connection box 705 has two groups of first card blocks 706, and the first card blocks 706 are fixedly connected to the card slot 703 through the second connecting rod 704. The connection box 705 has a through hole for the first connecting rod 702 and the second connecting rod 704 to pass through, and the second connecting rod 704 has a spring 710. There are also two groups of second card blocks 707 between the two groups of first card blocks 706, and the second card blocks 707 are connected to the first connecting rod 702 through a movable rod 709. The connecting box 705 is connected by a pin shaft, and a limiting block 708 is also provided on one side near the card slot 703 to prevent the second card block 707 from deviating when moving and limit it; when the gun head 4 needs to be replaced, the thumb presses the gun head ejection mechanism 7 to make the first connecting rods 702 on both sides move downward, and the first connecting rod 702 squeezes the movable rod 709 to drive the two groups of second card blocks 707 to move to both sides respectively. At the same time, the second card block 707 squeezes the first card block 706 to move toward the center direction of the gun head 4 and drives the second connecting rod 704 to push the card block The slot 703 moves toward the center of the gun head 4 until the slot 703 leaves the connecting block 301 to remove the gun head, and then install a new gun head 4, release the gun head ejection mechanism 7, and the spring 710 rebounds to restore, thereby driving the slot 703 to reset and engage with the connecting block 301, and the replacement is completed; then the thumb presses the push cap of the piston rod 5, the piston rod 5 moves down, and the liquid is sucked through the connecting tube 3 and the gun head 4 to perform the pipetting operation; during the replacement of the gun head 4 and the pipetting operation, the hand holding the gun head 4 does not need to move throughout the whole process, which is convenient for operation.

[0020] In the present invention, preferably, the connecting block 301 is concave and the slot 703 is round, so that the connecting block 301 can be more stable in the slot 703 and will not become loose due to the tilt of the gun body 4 during use.

[0021] In the present invention, preferably, the second block 707 is a right-angled trapezoid, and the inclined surface of the trapezoid is conducive to promoting the movement of the first block 706, and the height of the second block 707 is greater than the length of the engagement point of the connecting block 301, which can ensure that the gun head can be smoothly removed after pressing the gun head ejection mechanism 7.

[0022] In the utility model, preferably, the gun body 1 is provided with a hook 6, which is convenient for hanging on a storage rack after use.

[0023] In the present invention, preferably, the gun body 1 has a protective shell 2 outside to protect the gun body 1.

[0024] In the present invention, preferably, the protective shell 2 is provided with an anti-skid pad to prevent the gun body 4 from slipping and causing losses during the pipetting operation.

[0025] The working principle of the utility model is as follows: when the gun tip 4 needs to be replaced, the thumb presses the gun tip pushing mechanism 7 to make the first connecting rods 702 on both sides move downward, the first connecting rod 702 squeezes the movable rod 709 to drive the two groups of second clamping blocks 707 to move to both sides respectively, and at the same time, the second clamping block 707 squeezes the first clamping block 706 to move toward the center direction of the gun tip 4 and drives the second connecting rod 704 to push the clamping slot 703 to move toward the center direction of the gun tip 4 until the clamping slot 703 leaves the connecting clamping block 301 to remove the gun tip, and then install a new gun tip 4, release the gun tip pushing mechanism 7, the spring 710 rebounds and restores, that is, drives the clamping slot 703 to reset and engage with the connecting clamping block 301 to complete the replacement; then the thumb presses the pressing cap of the piston rod 5, the piston rod 5 moves downward, and absorbs the liquid through the connecting tube 3 and the gun tip 4 to perform the pipetting operation; during the replacement of the gun tip 4 and the pipetting operation, the hand holding the gun tip 4 does not need to move throughout the whole process, which is convenient for operation.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disassembled pipette, comprising a gun body (1), a connecting tube (3) in the gun body (1), a gun head (4) connected below the connecting tube (3), two groups of connecting blocks (301) on the connecting tube (3), a piston rod (5) at the top of the gun body (1), characterized in that: The gun body (1) is also provided with a gun head ejection mechanism (7), the gun head ejection mechanism (7) comprising an ejection button (701) and a card slot (703) matched with the connection card block (301), the ejection button (701) having a reset spring therein, first connecting rods (702) being connected to both sides of the ejection button (701), a connection box (705) being connected below the first connecting rod (702), the connection box (705) having two groups of first card blocks (706), the first card blocks (706) being connected to the second connecting rod ( The connecting box (705) is fixedly connected to the card slot (703), the connecting box (705) has a through hole for the first connecting rod (702) and the second connecting rod (704) to pass through, the second connecting rod (704) has a spring (710), and there are two groups of second card blocks (707) between the two groups of first card blocks (706). The second card blocks (707) are connected to the first connecting rod (702) by a pin shaft through a movable rod (709), and a limit block (708) is also provided on the side of the connecting box (705) close to the card slot (703).

2. The easily disassembled pipette according to claim 1, characterized in that: The connecting block (301) is concave, and the card slot (703) is round.

3. The easily disassembled pipette according to claim 2, characterized in that: The second clamping block (707) is a right-angled trapezoid, and the height of the second clamping block (707) is greater than the length of the clamping point of the connecting clamping block (301).

4. The easily disassembled pipette according to claim 1, characterized in that: The gun body (1) is provided with a hook (6).

5. The easily disassembled pipette according to claim 1, characterized in that: The gun body (1) is provided with a protective shell (2) outside.

6. The easily disassembled pipette according to claim 5, characterized in that: The protective shell (2) is provided with an anti-slip pad outside.

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