A mounting rack for pipette tip filter cotton injection

Abstract

The utility model relates to tip filter cotton mounting technical field, especially a kind of installation frame for pipette tip filter cotton injection, including fixed base plate, fixed clamp being located in the one side of base plate, movable clamp being located in the other side of base plate and locking assembly, the fixed clamp is located in the one side of base, and the height of the fixed clamp is higher than tip box middle part, for the movement of the upper half portion of tip box limiting, the movable clamp is located in the other side of base, and the height of the movable clamp is lower than fixed clamp, the movable clamp can slide along base surface to the direction of fixed clamp or away from fixed clamp, the utility model is clamped and limited to tip box by the cooperation of sliding movable clamp and fixed clamp, fixed clamp height is higher than tip box middle part, can form reliable limit on the upper half portion of tip box, avoid filter cotton injection process tip box displacement, inclination, guarantee filter cotton filling accuracy, while movable clamp height is lower, can reduce the obstruction to tip box pick-and-place path, reduce exogenous pollution risk.

Description

Technical Field

[0001] This utility model relates to the field of pipette tip filter cotton installation technology, and in particular to a mounting bracket for injecting filter cotton into a pipette tip. Background Technology

[0002] Pipettes are tools for precise liquid transfer, and the cleanliness and functionality of their matching tips directly affect the accuracy of experimental results. To avoid cross-contamination of samples or back diffusion of aerosols, pipette tips with filter cotton are widely used. The tip box is fixed by a positioning mechanism, and the pipette tube is inserted into the tip box. With the help of the pressing or suction components, the filter cotton is injected in batches into the pipette tube, which improves the efficiency and consistency of filter cotton filling.

[0003] Current positioning mechanisms typically employ a frame structure with side guards. These guards constrain the side and top of the suction head box, preventing it from tilting or shifting due to suction negative pressure or downward pressure during filter injection. However, the side guard height of existing positioning mechanisms is generally 15-20mm, which is usually more than half the height of the suction head box, and in some models, it is even close to the total height of the suction head box. While this design can meet the fixing requirements, the suction head box needs to be removed from above after the filter is filled, making it easy for fingers to touch the opening of the suction head box, increasing the risk of contamination. If gloves are worn during operation, the suction head box is more likely to slip due to insufficient friction.

[0004] Therefore, based on the above situation, it is necessary to design a mounting bracket for injecting filter cotton into pipette tips to solve the above problems. Utility Model Content

[0005] This invention provides a mounting bracket for injecting filter cotton into a pipette tip, in order to solve the problems in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution: A mounting bracket for injecting filter cotton into pipette tips includes a fixed base plate, a fixed clamp on one side of the base plate, a movable clamp on the other side of the base plate, and a locking assembly. The fixed clamp is located on one side of the base plate and its height is higher than the middle of the tip box, which is used to limit the movement of the upper part of the tip box. The movable clamp is located on the other side of the base plate and its height is lower than the fixed clamp. The movable clamp can slide along the surface of the base plate towards or away from the fixed clamp. When the movable clamp slides close to the fixed clamp, it cooperates with the fixed clamp to clamp the tip box. The locking assembly is used to fix the relative position between the movable clamp and the fixed clamp when the movable clamp slides to the clamping position.

[0007] Preferably, the locking assembly includes a slot formed on the fixed clamp, a slide groove formed on the movable clamp, and a locking rod slidably connected inside the slide groove. A first spring is connected between the locking rod and the slide groove, and an abutment ring is provided on the locking rod.

[0008] Preferably, the inner surfaces of the fixed clamp and the movable clamp are provided with anti-slip pads to increase the friction between them and the suction head box.

[0009] Preferably, a limiting frame for limiting the upper end of the suction head box is slidably connected to the fixing clamp, and a second spring is connected between the limiting frame and the fixing clamp.

[0010] Preferably, the base has a guide groove for guiding the movable clamp to slide.

[0011] Preferably, the movable clamp is provided with a vertical auxiliary plate. When the movable clamp and the fixed clamp cooperate to clamp the suction head box, the vertical auxiliary plate abuts against the corresponding side of the suction head box to form a vertical limit.

[0012] The beneficial effects of this utility model are as follows: the suction head box is clamped and limited by the cooperation of the sliding movable clamp and the fixed clamp. The fixed clamp is higher than the middle of the suction head box, which can reliably limit the upper part of the suction head box, prevent the suction head box from shifting or tilting during the injection of filter cotton, and ensure the filling accuracy of filter cotton. At the same time, the movable clamp is lower in height, which can reduce the obstruction of the suction head box picking and placing path and reduce the risk of external contamination. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the prior art structure provided for this utility model; Figure 2 This utility model provides a three-dimensional structural diagram of the device with the suction head box installed. Figure 3 Schematic diagram of the three-dimensional structure provided by this utility model Figure 1 ; Figure 4 Schematic diagram of the three-dimensional structure provided by this utility model Figure 2 ; Figure 5 This is a cross-sectional structural diagram provided for this utility model.

[0015] In the diagram, 1 is the base plate; 2 is the fixed clamp; 3 is the movable clamp; 4 is the suction head box; 5 is the locking assembly; 51 is the slot; 52 is the slide groove; 53 is the locking rod; 6 is the first spring; 7 is the abutment ring; 8 is the anti-slip pad; 9 is the limit frame; 10 is the second spring; 11 is the guide groove; and 12 is the vertical auxiliary plate. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0017] Reference Figure 1 As shown, a mounting bracket for injecting filter cotton into pipette tips is a schematic diagram of the prior art structure of this utility model. The bracket positions and clamps the tip box 4, making it inconvenient to remove the tip box 4. Fingers can easily touch the opening of the tip box 4, increasing the risk of contamination. Figures 2-5 As shown, the device includes a base 4, a fixed clamp 2 on one side of the base 4, and a movable clamp 3 on the other side of the base. In use, the fixed clamp 2 and the movable clamp 3 cooperate to clamp and limit the movement of the pipette tip box 4 containing the pipettes. The fixed clamp 2 is higher than the middle of the pipette tip box 4, which can be used to limit the movement of the upper part of the pipette tip box 4. The movable clamp 3 is lower than the fixed clamp 2. When it is necessary to clamp the pipette tip box 4, the movable clamp 3 can slide along the surface of the base towards the fixed clamp 2, cooperating with the fixed clamp 2 to clamp the pipette tip box 4. At this time, the locking component 5 locks the device. The relative position between the movable clamp 3 and the fixed clamp 2 is fixed to limit and fix the suction head box 4, maintaining the stability of the suction head box 4 during the filter cotton injection process. When it is necessary to remove the suction head box 4, the locking component 5 is released from locking the movable clamp 3 and the fixed clamp 2. Then, the movable clamp 3 is slid away from the fixed clamp 2 to release the clamp on the suction head box 4. The suction head box 4 can be taken out from the direction of the movable clamp 3. In this process, the obstruction of the suction head box 4's picking and placing path is reduced, and the operator does not need to pry the suction head box 4 from above, reducing the risk of external contamination.

[0018] Reference Figures 3-5As shown, the locking assembly 5 further includes a slot 51 on the fixed clamp 2, a groove 52 on the movable clamp 3, and a locking rod 53 slidably embedded in the groove 52. A first spring 6 is connected between the locking rod 53 and the inner wall of the groove 52, and an abutment ring 7 is provided on the outer circumferential surface of the locking rod 53. When the movable clamp 3 slides towards the fixed clamp 2, the locking rod 53 is pulled outward from the groove 52, causing the locking rod 53 to deform. When the movable clamp 3 slides to the preset position of clamping the suction head box 4, the locking rod 53 is released. Under the elastic action of the spring 6, the locking rod 53 enters the slot 51, and the abutment ring 7 stops the locking rod 53 from sliding in the slot 51, thus quickly achieving relative locking between the movable clamp 3 and the fixed clamp 2, preventing the movable clamp 3 from shifting during the filter cotton injection process. If it is necessary to unlock, simply pull the locking rod 53 out of the slide groove 52 to disengage it from the slot 51. In this state, if no external force is applied to the locking rod 53, the position of the locking rod 53 is stable under the elastic action of the first spring 6.

[0019] Reference Figures 3-5 As shown, furthermore, anti-slip pads 8 are glued to the inner surfaces of the fixed clamp 2 and the movable clamp 3. The anti-slip pads 8 can be made of materials such as rubber or silicone, and their surfaces can be provided with evenly distributed diamond-shaped anti-slip textures. When the two clamp the pipette tip box 4 together, the anti-slip pads 8 can directly adhere to the outer wall of the pipette tip box 4. On the one hand, this can prevent the fixed clamp 2 and the movable clamp 3, which are made of hard plastic, from having a rigid collision with the pipette tip box 4, thus preventing damage or scratches to the pipette tip box 4. On the other hand, it can significantly improve the friction of the clamping surface. Even if the pipette tip box 4 has a slight tendency to shift due to the weight of the internal pipette, it can be offset by the resistance of the anti-slip pads 8, ensuring the stability of the pipette tip box 4 during the filter cotton injection process.

[0020] Reference Figures 2-4 As shown, further, a limiting frame 9 is provided near the top of the fixing clip 2. The limiting frame 9 can be arranged in a "U" shape. When the suction head box 4 is clamped and fixed between the movable clip 3 and the fixing clip 2, the suction head box 4 is also located inside the limiting frame 9, and the limiting frame 9 limits the upper end of the suction head box 4. The limiting frame 9 can form a circumferential constraint from the upper end of the suction head box 4 to prevent the movable clip 3 from taking the suction head box 4 out when it moves away from the fixing clip 2. In order to improve the flexibility of use, a second spring 10 is connected between the limiting frame 9 and the fixing clip 2. The second spring 10 can automatically adjust the clamping force of the limiting frame 9 through its own elastic deformation. When installing the suction head box 4, simply pull the suction head box 4 to compress the second spring 10 to reserve the placement space. When the suction head box 4 is located inside the limiting frame 9, release the limiting frame 9, and the spring will automatically reset and drive the limiting frame 9 to press the suction head box 4. No additional locking steps are required. When removing the suction head box 4, pull the limiting frame 9 again to release the constraint.

[0021] Reference Figure 3 As shown, further, a guide groove 11 extending along the direction from the fixed clamp 2 to the movable clamp 3 is provided on the upper surface of the base. The bottom of the movable clamp 3 can be integrally formed with a guide block that matches the guide groove 11. The guide block is slidably embedded in the guide groove 11. When the movable clamp 3 is pushed to slide along the base, the guide block can move stably along the guide groove 11, avoiding lateral deviation or tilting of the movable clamp 3 during the sliding process. This ensures that the clamping surface of the movable clamp 3 is always parallel to the clamping surface of the fixed clamp 2, thereby ensuring that the suction head box 4 can be clamped evenly and preventing uneven clamping force. At the same time, the cooperation between the guide groove 11 and the guide block can limit the sliding trajectory of the movable clamp 3, preventing it from sliding out of the base range and improving operational safety.

[0022] Reference Figure 3 , Figure 4 As shown, the movable clamp 3 is further provided with a vertical auxiliary plate 12, and its height is not lower than that of the fixed clamp 2. The bottom of the movable clamp 3 is integrally formed with the edge of the fixed clamp 2 on one side or is fastened by bolts. The inner side wall of the vertical auxiliary plate 12 is closely fitted with the side of the suction head box 4 away from the fixed clamp 2. Together with the vertical constraint of the fixed clamp 2 on the other side of the suction head box 4, it forms a symmetrical vertical limit on both sides of the suction head box 4. By extending the limit height through the vertical auxiliary plate 12, it ensures that the upper part of the suction head box 4 can also be stably supported laterally.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mounting bracket for injecting filter cotton into a pipette tip, comprising a base plate (1), characterized in that, Also includes; Fixing clip (2), the fixing clip (2) is located on one side of the base, and the height of the fixing clip (2) is higher than the middle of the pipette tip box (4) containing the pipette, and is used to limit the movement of the upper part of the pipette tip box (4); The movable clamp (3) is located on the other side of the base, and the height of the movable clamp (3) is lower than that of the fixed clamp (2). The movable clamp (3) can slide along the surface of the base towards the fixed clamp (2) or away from the fixed clamp (2). When the movable clamp (3) slides close to the fixed clamp (2), it cooperates with the fixed clamp (2) to clamp the suction head box (4). Locking component (5) is used to fix the relative position between the movable clamp (3) and the fixed clamp (2) when the movable clamp (3) slides to the clamping position.

2. The mounting bracket for injecting filter cotton into a pipette tip according to claim 1, characterized in that, The locking assembly (5) includes a slot (51) on the fixed clamp (2), a slide groove (52) on the movable clamp (3), and a locking rod (53) slidably connected inside the slide groove (52). A first spring (6) is connected between the locking rod (53) and the slide groove (52), and an abutment ring (7) is provided on the locking rod (53).

3. The mounting bracket for injecting filter cotton into a pipette tip according to claim 1, characterized in that, The fixed clip (2) and the movable clip (3) are provided with anti-slip pads (8) on their respective inner surfaces to increase the friction between them and the suction head box (4).

4. The mounting bracket for injecting filter cotton into a pipette tip according to claim 1, characterized in that, A limiting frame (9) for limiting the upper end of the suction head box (4) is slidably connected to the fixing clamp (2), and a second spring (10) is connected between the limiting frame (9) and the fixing clamp (2).

5. The mounting bracket for injecting filter cotton into a pipette tip according to claim 1, characterized in that, The base is provided with a guide groove (11) for guiding the movable clamp (3) to slide.

6. The mounting bracket for injecting filter cotton into a pipette tip according to claim 1, characterized in that, The movable clamp (3) is provided with a vertical auxiliary plate (12). When the movable clamp (3) and the fixed clamp (2) are used to clamp the suction head box (4), the vertical auxiliary plate (12) abuts against the corresponding side of the suction head box (4) to form a vertical limit.

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