Stable butterfly clip

Abstract

The utility model relates to the technical field of experimental instruments, and provides a stable butterfly clamp which comprises a frame, rotating openings are formed in the two ends of the frame, rotating shafts are fixedly connected to the inner walls of the rotating openings, and a first clamping arm and a second clamping arm are rotationally connected to the surface of each rotating shaft. The burette replacing device is reasonable in structure, when burettes of different specifications are replaced, a first micro electric telescopic rod is started, and a first hinge strip and a second hinge strip are driven by a first rotating shaft to enable a first upper clamping plate and a first lower clamping plate to rotate on the rotating shaft under the action of the rotating shaft; a micro electric telescopic rod II is combined to enable a connecting strip I and a connecting strip II to enable an upper clamping plate II and a lower clamping plate II to rotate on a rotating shaft through a rotating shaft II under the action of the rotating shaft, so that the burettes with different diameters are matched with the upper clamping plate I and the lower clamping plate I; and the burette is clamped and fixed through a pressing column I and a pressing column II on the surfaces of the clamping arm I and the clamping arm II.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, and particularly relates to a stable butterfly clip. Background Art

[0002] Titration is a very important experimental operation in scientific research. In a titration device, a burette needs to be fixed on a burette stand by a fixing device or a clamp. Existing fixing devices mainly use methods such as butterfly clips, spring clips, screw clamping, and magnet adsorption fixation to fix the burette.

[0003] Among them, the fixing method of the butterfly clip can only clamp burettes with a fixed diameter and cannot meet the requirements of burettes of various specifications and sizes in the laboratory. Small-sized droppers are prone to slipping, causing damage to the droppers, while large-sized droppers are prone to cracking due to excessive force between the clamping walls. Therefore, a stable butterfly clip is proposed. Content of the Utility Model

[0004] The utility model provides a stable butterfly clip, which solves the problem that in the related art, the fixing method of the butterfly clip can only clamp burettes with a fixed diameter and cannot meet the requirements of burettes of various specifications and sizes in the laboratory. Small-sized droppers are prone to slipping, causing damage to the droppers, while large-sized droppers are prone to cracking due to excessive force between the clamping walls.

[0005] The technical solution of the utility model is as follows: A stable butterfly clip, comprising: a frame, both ends of the frame are provided with rotation openings, the inner wall of the rotation opening is fixedly connected with a rotating shaft, and the surface of the rotating shaft is rotatably connected with a clamping arm one and a clamping arm two;

[0006] The clamping arm one includes an upper clamping plate one and a lower clamping plate one, the clamping arm two includes an upper clamping plate two and a lower clamping plate two, the surface of the clamping arm one is fixedly connected with a pressing column one, the surface of the clamping arm two is fixedly connected with a pressing column two, the inner wall of the rotation opening is fixedly connected with a driving member one for cooperating with the clamping arm one, and the inner surface of the rotation opening is fixedly connected with a driving member two for cooperating with the clamping arm two;

[0007] A power supply member is arranged inside the frame, and a control member is arranged on the surface of the frame.

[0008] Optionally, a mounting hole is opened at the center of the side surface of the frame, a threaded hole is opened at the center of the surface of the frame, and the inner wall of the threaded hole is threadedly connected with a mounting bolt for cooperating with the mounting hole.

[0009] Optionally, the driving member one includes a micro electric telescopic rod one fixedly connected to the inner wall of the rotation opening, a hinge bar one, a hinge bar two, and a rotating shaft one;

[0010] The first hinge bar is rotatably connected to the first upper clamping plate through a rotating shaft. The second hinge bar is rotatably connected to the first lower clamping plate through a rotating shaft. Both the first hinge bar and the second hinge bar are rotatably connected to the first rotating shaft, and the first rotating shaft is rotatably connected to the output end of the first micro electric telescopic rod.

[0011] Optionally, the second driving member includes a second micro electric telescopic rod fixedly connected to the inner surface of the rotating opening, a first connecting bar, a second connecting bar, and a second rotating shaft;

[0012] The first connecting bar is rotatably connected to the second upper clamping plate through a rotating shaft. The second connecting bar is rotatably connected to the second lower clamping plate through a rotating shaft. Both the first connecting bar and the second connecting bar are rotatably connected to the second rotating shaft, and the second rotating shaft is rotatably connected to the output end of the second micro electric telescopic rod.

[0013] Optionally, the power supply member includes a battery, an inverter, and a charging interface fixedly connected inside the frame.

[0014] Optionally, the control member includes a controller, a first button, and a second button fixedly connected inside the frame.

[0015] Optionally, a bracket is provided at one end of the second upper clamping plate and the second lower clamping plate.

[0016] Optionally, adjustment openings are provided at one ends of the first pressing column and the second pressing column. A spring is fixedly connected to the inner wall of the adjustment opening. One end of the spring is fixedly connected to a connecting rod, and one end of the connecting rod is fixedly connected to a limiting piece.

[0017] The working principle and beneficial effects of the present utility model are as follows:

[0018] The structure of this application is reasonable. When replacing burettes of different specifications, the first micro electric telescopic rod is started. Through the first rotating shaft, the first hinge bar and the second hinge bar cause the first upper clamping plate and the first lower clamping plate to rotate around the rotating shaft under the action of the rotating shaft. In addition, in combination with the second micro electric telescopic rod, through the second rotating shaft, the first connecting bar and the second connecting bar cause the second upper clamping plate and the second lower clamping plate to rotate around the rotating shaft, so as to cooperate with the first upper clamping plate and the first lower clamping plate to adapt to burettes of different diameters. The burette is clamped and fixed by the first pressing column and the second pressing column on the surfaces of the first clamping arm and the second clamping arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a rear structural schematic diagram of the present utility model;

[0022] Figure 3 Partial sectional structure schematic diagram of the present utility model Figure 1 ;

[0023] Figure 4 Partial sectional structure schematic diagram of the present utility model Figure 2 ;

[0024] Figure 5 Partial sectional structure schematic diagram of the first pressing column in the present utility model;

[0025] In the figure: 1. Frame; 2. First clamping arm; 201. First upper clamping plate; 202. First lower clamping plate; 3. Second clamping arm; 301. Second upper clamping plate; 302. Second lower clamping plate; 4. Mounting hole; 5. Rotating shaft; 6. Mounting bolt; 7. Rotating opening; 8. First pressing column; 9. Second pressing column; 10. Limiting piece; 11. Bracket; 12. Charging interface; 13. First micro electric telescopic rod; 14. First hinge bar; 15. Second hinge bar; 16. First rotating shaft; 17. Battery; 18. First connecting bar; 19. Second connecting bar; 20. Second rotating shaft; 21. Second micro electric telescopic rod; 22. First button; 23. Second button; 24. Connecting rod; 25. Spring. Specific embodiments

[0026] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Embodiment 1

[0027] Please refer to Figure 1 - Figure 5 , a stable butterfly clip provided by the present utility model includes: a frame 1, rotating openings 7 are provided at both ends of the frame 1, a rotating shaft 5 is fixedly connected to the inner wall of the rotating opening 7, and a first clamping arm 2 and a second clamping arm 3 are rotatably connected to the surface of the rotating shaft 5;

[0028] The first clamping arm 2 includes a first upper clamping plate 201 and a first lower clamping plate 202, the second clamping arm 3 includes a second upper clamping plate 301 and a second lower clamping plate 302, a first pressing column 8 is fixedly connected to the surface of the first clamping arm 2, a second pressing column 9 is fixedly connected to the surface of the second clamping arm 3, a first driving member cooperating with the first clamping arm 2 is fixedly connected to the inner wall of the rotating opening 7, and a second driving member cooperating with the second clamping arm 3 is fixedly connected to the inner surface of the rotating opening 7;

[0029] Inside the frame 1, there is a power supply component. On the surface of the frame 1, there is a control component. At one end of the upper clamping plate two 301 and the lower clamping plate two 302, there is a bracket 11. The power supply component includes a battery 17 fixedly connected inside the frame 1, an inverter, and a charging interface 12.

[0030] Further, an installation hole 4 is opened at the center of the side surface of the frame 1, and a threaded hole is opened at the center of the surface of the frame 1. The inner wall of the threaded hole is threadedly connected with an installation bolt 6 that fits the installation hole 4.

[0031] Specifically, the titration rack passes through the installation hole 4, and then is threadedly connected with the threaded hole through the installation bolt 6, so that one end of the installation bolt 6 presses against the surface of the titration rack, and the frame 1 is fixed on the surface of the titration rack.

[0032] Further, the driving member one includes a micro electric telescopic rod one 13 fixedly connected to the inner wall of the rotating port 7, a hinge bar one 14, a hinge bar two 15, and a rotating shaft one 16;

[0033] The hinge bar one 14 is rotatably connected to the upper clamping plate one 201 through a rotating shaft, the hinge bar two 15 is rotatably connected to the lower clamping plate one 202 through a rotating shaft, both the hinge bar one 14 and the hinge bar two 15 are rotatably connected to the rotating shaft one 16, and the rotating shaft one 16 is rotatably connected to the output end of the micro electric telescopic rod one 13;

[0034] The driving member two includes a micro electric telescopic rod two 21 fixedly connected to the inner surface of the rotating port 7, a connecting bar one 18, a connecting bar two 19, and a rotating shaft two 20;

[0035] The connecting bar one 18 is rotatably connected to the upper clamping plate two 301 through a rotating shaft, the connecting bar two 19 is rotatably connected to the lower clamping plate two 302 through a rotating shaft, both the connecting bar one 18 and the connecting bar two 19 are rotatably connected to the rotating shaft two 20, and the rotating shaft two 20 is rotatably connected to the output end of the micro electric telescopic rod two 21.

[0036] Specifically, by starting the micro electric telescopic rod one 13, the hinge bar one 14 and the hinge bar two 15 are driven by the rotating shaft one 16 to make the upper clamping plate one 201 and the lower clamping plate one 202 rotate around the rotating shaft 5. Combined with the micro electric telescopic rod two 21, the connecting bar one 18 and the connecting bar two 19 are driven by the rotating shaft two 20 to make the upper clamping plate two 301 and the lower clamping plate two 302 rotate around the rotating shaft 5, so as to cooperate with the upper clamping plate one 201 and the lower clamping plate one 202 to facilitate fitting different specifications of burettes.

[0037] Further, the control component includes a controller fixedly connected inside the frame 1, a button one 22, and a button two 23.

[0038] Specifically, Button 1 22 controls the micro electric telescopic rod 1 13 via the controller, and Button 2 23 controls the micro electric telescopic rod 2 21 via the controller.

[0039] During use, when it is necessary to replace burettes of different specifications, the experimenter presses Button 1 22 to start the micro electric telescopic rod 1 13 via the controller. The hinged strip 1 14 and the hinged strip 2 15 are rotated by the rotating shaft 1 16 under the action of the rotating shaft, so that the upper clamping plate 1 201 and the lower clamping plate 1 202 rotate on the rotating shaft 5. Then, the experimenter presses Button 2 23, and the micro electric telescopic rod 2 21 rotates the connecting strip 1 18 and the connecting strip 2 19 via the rotating shaft 2 20 under the action of the rotating shaft, so that the upper clamping plate 2 301 and the lower clamping plate 2 302 rotate on the rotating shaft 5 to cooperate with the upper clamping plate 1 201 and the lower clamping plate 1 202.

[0040] Finally, the burette is clamped and fixed by the pressing columns 1 8 and the pressing columns 2 9 on the surfaces of the clamping arm 1 2 and the clamping arm 2 3. Embodiment 2

[0041] Based on Embodiment 1, this embodiment includes: adjustment openings are provided at one ends of the pressing columns 1 8 and the pressing columns 2 9. The inner walls of the adjustment openings are fixedly connected with springs 25. One ends of the springs 25 are fixedly connected with connecting rods 24, and one ends of the connecting rods 24 are fixedly connected with limiting pieces 10.

[0042] When clamping the burette, the experimenter pulls the limiting piece 10 to move the connecting rod 24 outwards and deforms the spring 25. After the burette is clamped and fixed, the experimenter slowly resets the limiting piece 10, and the spring 25 pulls the connecting rod 24 to limit the burette by the limiting piece 10 to prevent the position of the burette from changing.

Claims

1. A stable butterfly clip, characterized in that: include: A frame (1), wherein both ends of the frame (1) are provided with a rotating opening (7), the inner wall of the rotating opening (7) is fixedly connected to a rotating shaft (5), and the surface of the rotating shaft (5) is rotatably connected to a clamping arm 1 (2) and a clamping arm 2 (3); The clamping arm 1 (2) comprises an upper clamping plate 1 (201) and a lower clamping plate 1 (202); the clamping arm 2 (3) comprises an upper clamping plate 2 (301) and a lower clamping plate 2 (302); a pressure column 1 (8) is fixedly connected to the surface of the clamping arm 1 (2); a pressure column 2 (9) is fixedly connected to the surface of the clamping arm 2 (3); a driving member 1 that matches the clamping arm 1 (2) is fixedly connected to the inner wall of the rotating opening (7); and a driving member 2 that matches the clamping arm 2 (3) is fixedly connected to the inner surface of the rotating opening (7); A power supply component is provided inside the frame (1), and a control component is provided on the surface of the frame (1).

2. A stable butterfly clip according to claim 1, characterized in that: A mounting hole (4) is provided at the center of the side surface of the frame (1), a threaded hole is provided at the center of the surface of the frame (1), and a mounting bolt (6) matching the mounting hole (4) is threadedly connected to the inner wall of the threaded hole.

3. A stable butterfly clip according to claim 1, characterized in that: The driving member 1 comprises a micro electric telescopic rod 1 (13) fixedly connected to the inner wall of the rotating opening (7), a hinge bar 1 (14), a hinge bar 2 (15) and a rotating shaft 1 (16); The hinged bar 1 (14) is rotatably connected to the upper clamping plate 1 (201) via a rotating shaft, and the hinged bar 2 (15) is rotatably connected to the lower clamping plate 1 (202) via a rotating shaft. The hinged bar 1 (14) and the hinged bar 2 (15) are both rotatably connected to the rotating shaft 1 (16), and the rotating shaft 1 (16) is rotatably connected to the output end of the micro electric telescopic rod 1 (13).

4. A stable butterfly clip according to claim 1, characterized in that: The second driving member comprises a second micro electric telescopic rod (21) fixedly connected to the inner surface of the rotating opening (7), a first connecting strip (18), a second connecting strip (19) and a second rotating shaft (20); The connecting bar 1 (18) is rotationally connected to the upper clamping plate 2 (301) via a rotating shaft, and the connecting bar 2 (19) is rotationally connected to the lower clamping plate 2 (302) via a rotating shaft. The connecting bar 1 (18) and the connecting bar 2 (19) are both rotationally connected to the rotating shaft 2 (20), and the rotating shaft 2 (20) is rotationally connected to the output end of the micro electric telescopic rod 2 (21).

5. A stable butterfly clip according to claim 1, characterized in that: The power supply comprises a battery (17) fixedly connected inside the frame (1), an inverter and a charging interface (12).

6. A stable butterfly clip according to claim 1, characterized in that: The control component comprises a controller fixedly connected inside the frame (1), a button 1 (22) and a button 2 (23).

7. A stable butterfly clip according to claim 1, characterized in that: A bracket (11) is provided at one end of the upper clamping plate 2 (301) and the lower clamping plate 2 (302).

8. A stable butterfly clip according to claim 1, characterized in that: An adjustment opening is provided at one end of the first pressure column (8) and the second pressure column (9); a spring (25) is fixedly connected to the inner wall of the adjustment opening; one end of the spring (25) is fixedly connected to a connecting rod (24); one end of the connecting rod (24) is fixedly connected to a limiting plate (10).

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