Multi-specification cap picking tweezers

Abstract

The utility model relates to the field of biological medicine technology, concretely is a multi-specification cap picking pipe forceps, including the forceps body that is composed of the arc -shaped rod and the straight rod of forceps body, the arc -shaped rod of forceps body is composed of arc -shaped section and straight section, and the connecting place of arc -shaped section of forceps body arc -shaped rod and straight rod of forceps body is equipped with round bar, and the straight section of arc -shaped rod of forceps body and straight rod of forceps body between movable penetration has adjusting assembly, adjusting assembly is used for making the straight section of arc -shaped rod of forceps body close to straight rod of forceps body. The utility model discloses the forceps shape design of multi-specification half opener structure, can accord with ergonomics, and it is convenient for operating personnel to hold the forceps body and easily realizes the touch -free picking, screwing etc. operation of multiple specifications sample tube or pipe cap, reaches the operation demand of single set of forceps can be compatible with multiple specifications sample tube or pipe cap, simultaneously, the utility model discloses whole structure simple and reasonable, easily realizes mass production through machining or injection moulding process, possesses remarkable practical value and industrialization prospect.

Description

Technical Field

[0001] This utility model relates to the field of biomedical technology, specifically to a multi-specification screw capping tube picking forceps. Background Technology

[0002] In biomedical experiments and related work, the handling and capping of sample tubes such as cell cryopreservation tubes are frequent basic operations. These samples often pose a risk of contamination or biohazards, requiring strict safety and cleanliness standards for the operation. Currently, the mainstream methods for handling these operations fall into two categories: one is direct manual operation while wearing gloves. Although this method requires no additional equipment investment and is flexible, direct contact between gloves and sample tubes can easily lead to cross-contamination, and operators also face the safety hazard of contact with biohazardous substances, making it difficult to meet the safety and cleanliness standards of experimental operations. The other is the use of automated sample storage equipment. While this method enables contactless operation, the equipment is expensive and has certain requirements for laboratory space and maintenance conditions, making it difficult to widely apply in ordinary laboratories and small research institutions.

[0003] To address the aforementioned issues, extensive technological exploration has been undertaken in related fields. For example, Chinese Patent Publication No. CN201940916U proposes an arc-shaped forceps for gripping tubular vessels in biological or medical experiments. This patent utilizes the similarity between the inner contour of the arc-shaped gripper and the outer contour of the tubular glass vessel to firmly grip it, achieving contactless operation. Simultaneously, the serrated protrusions on the rubber layer can be engaged in grooves on the outside of the cap, facilitating the unscrewing of the cap. This provides a feasible approach for contactless gripping and capping of sample tubes such as cell cryopreservation tubes. However, this patented solution still has the following shortcomings in practical applications: Because the structure and gripping distance of the arc-shaped chuck in the published patent are limited, it can only be adapted to sample tubes and caps of specific sizes. It lacks compatibility when facing the operation needs of sample tubes of various specifications in experimental scenarios, requiring multiple sets of tweezers, which increases the experimental cost and the complexity of operation. Utility Model Content

[0004] This invention provides a multi-specification screw capping and tube picking tweezers to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A multi-specification screw capping and tube picking forceps includes a forceps body composed of an arc-shaped forceps body and a straight forceps body. The arc-shaped forceps body is composed of an arc-shaped segment and a straight segment, and a round rod is provided at the connection between the arc-shaped segment and the straight forceps body. An adjustment component is movably connected between the straight segment and the straight forceps body, and the adjustment component is used to bring the straight segment of the arc-shaped forceps body closer to the straight forceps body. The straight forceps body has a large-specification groove and a small-specification groove on the corresponding side of the straight segment. One end of the straight forceps body and one end of the straight segment are connected to a screwdriver end, and the two screwdriver ends are correspondingly arranged, and the corresponding side of the two screwdriver ends is provided with an anti-slip protrusion group.

[0006] Preferably, the adjustment assembly includes a screw for passing through the straight section and the tweezer body rod, and two fastening nuts and an adjusting nut connected to the screw, wherein the bottom end of the tweezer body rod is located between the two fastening nuts, and the adjusting nut is located on the side of the straight section away from the tweezer body rod.

[0007] Preferably, the surface of the straight bar of the tweezers is provided with a first elliptical hole, the surface of the straight section is provided with a second elliptical hole corresponding to the first elliptical hole, and the screw passes through the first elliptical hole and the second elliptical hole.

[0008] Preferably, a large-size limiting rib is provided between the large-size groove and the small-size groove, and a small-size limiting rib is provided between the small-size groove and the screwdriver end.

[0009] Preferably, the two screwdriver ends each include a large-size half-screwdriver end and a small-size half-screwdriver end, both of which have an arc-shaped structure. The surface of the large-size half-screwdriver end is provided with a large-size anti-slip protrusion, and the surface of the small-size half-screwdriver end is provided with a small-size anti-slip protrusion.

[0010] Preferably, each of the two screwdriver ends further includes a terminal sidewall, which is integrally formed with the large-size half screwdriver end, the small-size half screwdriver end, the large-size anti-slip boss, and the small-size anti-slip boss.

[0011] Preferably, the inner wall of the arc-shaped section of the tweezers body arc-shaped rod is provided with a plurality of deformation grooves at equal intervals, and the outer wall of the arc-shaped section of the tweezers body arc-shaped rod is provided with a rounded corner surface.

[0012] Preferably, the surface of the tweezers body rod has a cavity, the cavity has multiple reinforcing ribs, and the outer wall surface of the tweezers body rod has rounded corners.

[0013] Preferably, the arc-shaped lever of the tweezers body is integrally formed with the straight lever and the round lever of the tweezers body.

[0014] Preferably, the inner wall at the connection between the arc-shaped rod and the straight rod of the tweezers body is provided with an arc-shaped wall.

[0015] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: In this invention, the tweezers body is integrally formed from the curved tweezers rod and the straight tweezers rod, and the overall structure conforms to ergonomic design. This allows operators to stably clamp, select, and place sample tubes or screws of different sizes by gripping or releasing the tweezers, greatly improving the ease of operation.

[0016] In this invention, the structure of a round rod at the top of the forceps body allows the operator to quickly tighten or loosen a loose sample tube cap with one hand. Furthermore, both the arc-shaped rod and the straight rod of the forceps body have grooves on their inner walls to accommodate different sizes of sample tube caps, providing limited fixation and preventing the caps from sliding down. Simultaneously, the design of large and small limiting ribs precisely limits the position of the sample tube cap, further ensuring its stability during operation.

[0017] In this invention, elliptical holes are respectively provided on the curved and straight rods of the forceps body. This allows the screw, which passes through the elliptical holes, to only slightly shift longitudinally when the operator tightens or loosens the curved rod. This strictly limits the movement of the curved and straight rods of the forceps body to always be in the same plane, preventing component misalignment and improving the accuracy of sample tube handling. In addition, the screw and matching nut can be directly made from commercially available threaded rods and nuts, effectively reducing manufacturing costs.

[0018] In this invention, the screwdriver end connected to the curved rod of the forceps body and the screwdriver end connected to the straight rod of the forceps body are arranged in a mirror-symmetrical manner, and both have a slight curvature to adapt to the contour of the sample tube cap screwing part. The screwdriver end connected to the curved rod of the forceps body is slightly longer than the screwdriver end connected to the straight rod. This length difference design can compensate for the displacement deviation when the forceps body is gripped, allowing the two screwdriver ends to fit together to form a complete polygonal screwdriver for the sample tube cap when the operator grips the forceps body. This polygonal screwdriver then engages with the screwing part of the sample tube cap, achieving a stable screwing operation. Simultaneously, the length difference design also ensures that when the operator grips the curved rod of the forceps body, the elliptical hole and adjustment component allow the straight section of the curved rod to move the corresponding screwdriver end downwards, pushing the cap downwards and separating the cap from the screwdriver end, facilitating separation.

[0019] In this invention, the anti-slip protrusions on the curved rod of the tweezers body can form a staggered engagement structure with the anti-slip protrusions on the straight rod of the tweezers body. When the tweezers bodies are in contact, the two sets of anti-slip protrusions can stagger and engage with each other to form an anti-displacement engagement structure, which can effectively limit the relative sliding between the curved rod and the straight rod of the tweezers body, ensuring the stability and accuracy of the sample tube cap screwing operation. At the same time, the anti-slip protrusions can also ensure the stability of the sample tube clamping operation of the screwdriver end.

[0020] In this invention, the handle of the tweezers body is designed specifically according to the shape and size of the human hand, which meets the ergonomic grip requirements and can significantly improve the comfort of experimental personnel during long-term operation and reduce operational fatigue.

[0021] In summary, this utility model, through its multi-specification semi-screwdriver structure tweezers design, conforms to ergonomics, allowing operators to easily grasp the tweezers and perform non-contact selection, screwing, and other operations on various sizes of sample tubes or caps. This achieves the requirement that a single set of tweezers can accommodate multiple sizes of sample tubes or caps. Furthermore, this utility model combines adjustable spacing with high compatibility, adapting to different sizes of objects. Its overall structure is simple and reasonable, making it easy to mass-produce through machining or injection molding, thus possessing significant practical value and industrialization prospects. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective.

[0024] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle.

[0025] Figure 4 This is a schematic diagram of the planar structure of this utility model.

[0026] In the diagram: 1. Tweezers body arc-shaped rod; 11. Arc-shaped segment; 12. Straight segment; 13. Deformation groove; 2. Tweezers body straight rod; 21. Cavity; 22. Reinforcing rib; 3. Round rod; 4. Adjustment assembly; 41. Screw; 42. Fastening nut; 43. Adjusting nut; 5. Large-size groove; 51. Large-size limiting transverse rib; 6. Small-size groove; 61. Small-size limiting transverse rib; 7. Screwdriver end; 71. Large-size half-screwdriver end; 72. Small-size half-screwdriver end; 73. Large-size anti-slip boss; 74. Small-size anti-slip boss; 75. Terminal sidewall; 8. Anti-slip protrusion group; 9. First elliptical hole; 10. Second elliptical hole; 100. Arc-shaped wall. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order 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 present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] like Figures 1-4 As shown, this utility model provides a multi-specification screw capping forceps, including a forceps body composed of an arc-shaped rod 1 and a straight rod 2. The arc-shaped rod 1 is composed of an arc-shaped segment 11 and a straight segment 12, and a round rod 3 is provided at the connection between the arc-shaped segment 11 and the straight rod 2. The design of the round rod 3 facilitates the operator to quickly tighten or loosen the sample tube cap when it is loose. The arc-shaped rod 1, the straight rod 2, and the round rod 3 are integrally formed. An adjustment component 4 is movably inserted between the straight segment 12 of the arc-shaped rod 1 and the straight rod 2. The adjustment component 4 is used to bring the straight segment 12 of the arc-shaped rod 1 closer to the straight rod 2.

[0030] The straight bar 2 of the forceps body and the straight section 12 are respectively provided with a large-sized groove 5 and a small-sized groove 6. A large-sized limiting rib 51 is provided between the large-sized groove 5 and the small-sized groove 6, and a small-sized limiting rib 61 is provided between the small-sized groove 6 and the screwdriver end 7. The large-sized groove 5 is used to fit and engage with the large-sized sample tube cap to achieve limited fixation of the large-sized sample tube cap and prevent it from slipping off. The small-sized groove 6 is used to fit and engage with the small-sized sample tube cap to achieve limited fixation of the small-sized sample tube cap and prevent it from slipping off. Specifically, during the process of clamping a single sample tube cap or the cap on the top of the sample tube, the large-sized limiting rib 51 can form a radial limit on the large-sized sample tube cap, and the small-sized limiting rib 61 can form a radial limit on the small-sized sample tube cap to ensure stability during the clamping process.

[0031] Combination Figure 3 and Figure 4As shown, both the straight rod 2 and the straight section 12 of the forceps body are connected to a screwdriver end 7. The two screwdriver ends 7 are correspondingly arranged, and each of the two screwdriver ends 7 has an anti-slip protrusion group 8 on its corresponding side. The anti-slip protrusion group 8 on the curved rod 1 of the forceps body can form a staggered interlocking structure with the anti-slip protrusion group 8 on the straight rod 2 of the forceps body. Through the interlocking effect of the staggered interlocking structure, the relative displacement between the curved rod 1 and the straight rod 2 of the forceps body can be effectively limited, preventing the clamping operation on the cap of the sample tube. When the two parts slide out of alignment, the stability of the sample tube clamping operation is ensured. The two screwdriver ends 7 include a large-size half screwdriver end 71 and a small-size half screwdriver end 72. Both the large-size half screwdriver end 71 and the small-size half screwdriver end 72 are arc-shaped structures, and the arc-shaped outer wall surfaces of the large-size half screwdriver end 71 and the small-size half screwdriver end 72 are provided with protruding pillars so that the arc-shaped outer wall surfaces of the large-size half screwdriver end 71 and the small-size half screwdriver end 72 can be polygonal, which is conducive to fitting and engaging with the screwing part of the tube cap.

[0032] Specifically, the large-sized half-screwdriver end 71 connected to the straight rod 2 of the forceps body and the large-sized half-screwdriver end 71 connected to the straight section 12 are arranged in a mirror-symmetric manner, and the outer wall surfaces of both have a slight curvature to adapt to the contour of the large sample tube cap; wherein, the large-sized half-screwdriver end 71 connected to the straight section 12 is slightly longer than the large-sized half-screwdriver end 71 connected to the straight rod 2 of the forceps body. This length difference design can offset the displacement deviation when the forceps body is gripped, so that when the operator grips the forceps body, the two large-sized half-screwdriver ends 71 ​​can fit together to form a complete large-sized sample tube cap polygonal screwdriver. Then, by adapting and engaging the polygonal screwdriver with the screwing part of the large-sized sample tube cap, a stable screwing operation of the large-sized sample tube cap can be achieved. The screwing operation can be performed through the round rod 3.

[0033] The small-sized half-screwdriver end 72 connected to the straight bar 2 of the forceps body and the small-sized half-screwdriver end 72 connected to the straight section 12 are arranged in a mirror-symmetric manner, and the outer wall surfaces of both have a slight curvature to adapt to the contour of the small sample tube cap. The small-sized half-screwdriver end 72 connected to the straight section 12 is slightly longer than the small-sized half-screwdriver end 72 connected to the straight bar 2 of the forceps body. This length difference design can offset the displacement deviation when the forceps body is gripped, so that when the operator grips the forceps body, the two small-sized half-screwdriver ends 72 can fit together to form a complete small sample tube cap polygonal screwdriver. Then, by adapting and engaging the polygonal screwdriver with the screwing part of the small sample tube cap, a stable screwing operation of the small sample tube cap can be achieved.

[0034] It should be emphasized that the specific number of sides of the aforementioned polygonal half-screwdriver can be determined by the inner screw-on part of the cell cryopreservation tube cap during actual production. The specific structure can be designed as a straight line, triangle, quadrilateral, pentagon, hexagon, octagon, etc. This utility model mainly uses the more complex hexagon as an example.

[0035] Combination Figure 3 As shown, the surface of the large-size half-screwdriver end 71 is provided with a large-size anti-slip protrusion 73, and the surface of the small-size half-screwdriver end 72 is provided with a small-size anti-slip protrusion 74; and the two screwdriver ends 7 also include terminal sidewalls 75 respectively. The terminal sidewalls 75 are used to strengthen the structural strength of the screwdriver ends 7. In actual application, they do not affect the screwdriver ends 7's screwing operation on the tube cap. The terminal sidewalls 75 are integrally formed with the large-size half-screwdriver end 71, the small-size half-screwdriver end 72, the large-size anti-slip protrusion 73, and the small-size anti-slip protrusion 74.

[0036] Specifically, the large-sized anti-slip protrusions 73 on the screwdriver end 7 of the straight rod 2 of the forceps body are arranged correspondingly to the large-sized anti-slip protrusions 73 on the screwdriver end 7 of the straight section 12. When the large-sized sample tube cap is being screwed on and the cap is in a loose state, the two sets of large-sized anti-slip protrusions 73 can form a limiting fit with the wall surface of the screwing part inside the cap, increasing the contact friction and preventing the large-sized sample tube cap from slipping off the screwdriver end 7. Similarly, when the small-sized sample tube cap is being screwed on and the cap is in a loose state, the small-sized anti-slip protrusions 74 on the screwdriver end 7 of the straight rod 2 of the forceps body and the small-sized anti-slip protrusions 74 on the screwdriver end 7 of the straight section 12 can form a limiting fit with the wall surface of the screwing part inside the cap, increasing the contact friction and preventing the small-sized sample tube cap from slipping off the screwdriver end 7.

[0037] Combination Figure 1 and Figure 2 As shown, as a further step, the adjustment assembly 4 includes a screw 41 for passing through the straight section 12 and the tweezer body straight rod 2, and two fastening nuts 42 and an adjusting nut 43 connected to the screw 41. The bottom end of the tweezer body straight rod 2 is located between the two fastening nuts 42, and the adjusting nut 43 is located on the side of the straight section 12 away from the tweezer body straight rod 2. The surface of the tweezer body straight rod 2 is provided with a first elliptical hole 9, and the surface of the straight section 12 is provided with a second elliptical hole 10 corresponding to the first elliptical hole 9. The screw 41 passes through the first elliptical hole 9 and the second elliptical hole 10.

[0038] Specifically, the design of the first elliptical hole 9 and the second elliptical hole 10 ensures that the screw 41 will only undergo slight longitudinal displacement when the operator uses this invention. This guarantees that the curved forceps body 1 and the straight forceps body 2 always move on the same plane, ensuring a stable grip on the sample tube. Simultaneously, because both the first elliptical hole 9 and the second elliptical hole 10 are elliptical holes, the curved forceps body 1 can move closer to the straight forceps body 2 when rotating at the connection point (the connection with the straight forceps body 2), thus achieving gripping of the sample tube.

[0039] It should be noted that there are two clamping scenarios when holding the sample tube. First, when the curved lever 1 of the forceps is close to the straight lever 2, the inner side of the screwdriver end 7 (anti-slip protrusion group 8) contacts the sample tube wall to clamp the sample tube. Second, when the curved lever 1 of the forceps is close to the straight lever 2, the inner side of the screwdriver end 7 (anti-slip protrusion group 8) contacts the cap connected to the sample tube to clamp the sample tube. When dealing with larger sample tubes in the second scenario, to prevent the cap connected to the sample tube from slipping, the large-sized groove 5 or small-sized groove 6 between the straight section 12 and the straight lever 2 can be used to clamp the cap on the corresponding protruding part on the outer wall of the cap. This ensures that the bottom of the protruding part of the cap is restricted at the large-sized limiting rib 51 or the small-sized limiting rib 61, thereby limiting the cap of the larger sample tube and ensuring stability during the clamping process.

[0040] It should also be noted that the screw 41, fastening nut 42 and adjusting nut 43 are all commercially available products, and their structural costs are low.

[0041] Combination Figure 1 As shown, the inner wall of the arc-shaped section 11 of the tweezers body arc rod 1 is provided with several deformation grooves 13 with equal spacing. Through the spaced design of multiple deformation grooves 13, it can be ensured that when the operator grips the tweezers body arc rod 1, the force can be accurately distributed and the deformation resistance can be reduced. This makes the tweezers body arc rod 1 easy to generate elastic deformation to adapt to the operation, avoids breakage due to local stress concentration, and achieves the effect of balancing operational flexibility and structural strength.

[0042] The inner wall of the connection between the arc-shaped bar 1 and the straight bar 2 of the tweezers body is provided with an arc-shaped wall 100. The design of the arc-shaped wall 100 can effectively offset the mechanical fatigue stress generated by the operator's frequent tightening and loosening of the grip, significantly improve the fatigue resistance of the connection, prevent breakage after long-term use, and ensure the service life and stability of the tool.

[0043] As one implementation method, when the tweezers body, which consists of the curved tweezers rod 1 and the straight tweezers rod 2, is made of a special hardness material such as soft rubber, the inner sidewall at the connection between the curved tweezers rod 1 and the straight tweezers rod 2 can be designed as an acute angle structure. The acute angle structure can reduce the deformation resistance of the soft rubber material, ensure smooth opening and closing of the tweezers body, and further improve the ease of operation.

[0044] Combination Figure 2 As shown, a cavity 21 is formed on the surface of the tweezers body straight rod 2, and multiple reinforcing ribs 22 are distributed along the length of the tweezers body straight rod 2 inside the cavity 21. Through the hollow design of the cavity 21, the overall weight of the tweezers body straight rod 2 can be effectively reduced without affecting the integrity of the basic structure, thus improving the ease of holding. At the same time, with the distributed arrangement of multiple reinforcing ribs 22 inside the cavity 21, multiple force-bearing support structures can be formed, which significantly enhances the structural rigidity and deformation resistance of the tweezers body straight rod 2, and avoids large deformation or breakage due to force when the operator holds and uses it. Thus, this design can ensure the lightweight and structural stability of the tool.

[0045] As one implementation, when the tweezers body rod 2 is manufactured using injection molding, its inner wall surface can be replaced with a structure similar to the deformation groove 13, replacing the structure of the cavity 21 and the reinforcing rib 22.

[0046] The outer wall of the arc-shaped section 11 of the forceps body arc rod 1 is provided with rounded corners, and the outer wall of the forceps body straight rod 2 is also provided with rounded corners. The design of rounded corners on the outer walls of both the forceps body arc rod 1 and the forceps body straight rod 2 ensures the comfort of the operator during use; when using the forceps, the operator needs to contact the forceps body straight rod 2 with the palm of the hand, and hold the forceps body arc rod 1 with four fingers, and then grasp or release the forceps body arc rod 1 by the four fingers to achieve the clamping or selection and placement of sample tubes.

[0047] As one implementation method, when the sample tubes are placed relatively compactly (i.e., the corresponding top caps are also relatively compact), the operator can adjust the relative distance between the straight section 12 and the straight rod 2 of the forceps body by rotating the adjusting nut 43 before using this utility model, so as to adapt to the compactly placed sample tubes or caps, reduce the large range of motion, and achieve convenient gripping.

[0048] The working principle and usage process of this utility model are as follows: When it is necessary to clamp a single sample tube or a sample tube with a cap, the operator can adjust the distance between the straight rod 2 of the forceps body and the straight section 12 by rotating the adjusting nut 43 to adapt to sample tubes or caps of different specifications; then, when the operator holds the forceps body and grips the curved rod 1 of the forceps body, the screwdriver end 7 connected to the curved rod 1 of the forceps body can move toward the screwdriver end 7 connected to the straight rod 2 of the forceps body and fit together, and during the fitting process of the two sets of screwdriver ends 7, the anti-slip protrusions 8 at the corresponding positions can fit against the sample tube wall or the outer wall of the cap connected to the sample tube to achieve the clamping of the sample tube. When dealing with larger sample tubes, the large-sized groove 5 or small-sized groove 6 between the straight section 12 and the straight rod 2 of the forceps can be used to clamp the corresponding protrusion on the outer wall of the tube cap. This ensures that the bottom of the protrusion of the tube cap can be restricted at the large-sized limiting rib 51 or the small-sized limiting rib 61, thereby limiting the larger sample tube cap and ensuring stability during the clamping process.

[0049] When it is necessary to tighten the sample tube cap, the operator can first rotate the adjusting nut 43 so that the straight section 12 is in contact with the straight rod 2 of the forceps body after the adjusting nut 43 is rotated. This causes the screwdriver end 7 connected to the arc-shaped rod 1 of the forceps body to be in contact with the screwdriver end 7 connected to the straight rod 2 of the forceps body, forming a polygonal half screwdriver. During the contact process, the anti-slip protrusion group 8 on the arc-shaped rod 1 of the forceps body can form a misaligned engagement structure with the anti-slip protrusion group 8 on the straight rod 2 of the forceps body. Through the engagement of the misaligned engagement structure, the relative displacement between the arc-shaped rod 1 of the forceps body and the straight rod 2 of the forceps body can be effectively limited, preventing misalignment and slippage when tightening the sample tube cap, thus ensuring the stability and accuracy of the tightening operation. Next, the operator inserts the two half-screwdriver ends together to form a single screwdriver end into the screw-on part of the cell cryopreservation tube cap. This ensures that the single screwdriver end formed by the two small half-screwdriver ends 72 can fit the screw-on part of the small-sized cap, and the single screwdriver end formed by the two large half-screwdriver ends 71 ​​can fit the screw-on part of the large-sized cap. Finally, after the single screwdriver end is inserted and fixed, the operator can rotate the round rod 3 to rotate the forceps body and achieve the screw-on operation of the sample tube cap. After the screw-on operation is completed, the operator grips the curved rod 1 of the forceps body, which, under the action of the elliptical hole and the adjustment component 4, causes its straight section 12 to cause the corresponding screwdriver end 7 to separate from the screwdriver end 7 on the straight rod 2 of the forceps body and move downward, causing the screwdriver end 7 connected to the straight section 12 to push the cap downward, thus separating the cap from the screwdriver end 7.

[0050] In summary, this invention, through its multi-specification semi-screwdriver structure and ergonomic design combining the curved tweezers body 1 and the straight tweezers body 2, allows laboratory personnel to easily grip the tweezers and effortlessly perform non-contact selection, tightening, and other operations on various sizes of sample tubes, caps, or screws. This achieves the goal of a single set of tweezers being compatible with multiple sizes of sample tubes, screws, or caps. Furthermore, this invention features an adjustable spacing structure and high compatibility, adapting to different sizes of objects. Its overall structure is simple and rational, making it easy to mass-produce through machining or injection molding, thus possessing significant practical value and industrialization prospects.

[0051] In this invention, the term "plural" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-specification screw cap picking forceps, characterized in that, The tweezers body comprises an arc-shaped tweezers rod (1) and a straight tweezers rod (2). The arc-shaped tweezers rod (1) is composed of an arc-shaped segment (11) and a straight segment (12). A round rod (3) is provided at the connection between the arc-shaped segment (11) and the straight tweezers rod (2). An adjustment component (4) is movably connected between the straight segment (12) and the straight tweezers rod (2). The adjustment component (4) is used to adjust the... The straight section (12) of the curved rod (1) of the tweezers body is close to the straight rod (2) of the tweezers body, and the straight rod (2) of the tweezers body and the straight section (12) are respectively provided with a large-sized groove (5) and a small-sized groove (6). One end of the straight rod (2) of the tweezers body and the straight section (12) are respectively connected to a screwdriver end (7). The two screwdriver ends (7) are respectively provided, and the two screwdriver ends (7) are respectively provided with anti-slip protrusions (8) on the corresponding side.

2. The multi-specification screw capping and tube picking forceps according to claim 1, characterized in that, The adjustment assembly (4) includes a screw (41) for passing through the straight section (12) and the tweezer body rod (2), and two fastening nuts (42) and an adjusting nut (43) connected to the screw (41). The bottom end of the tweezer body rod (2) is located between the two fastening nuts (42), and the adjusting nut (43) is located on the side of the straight section (12) away from the tweezer body rod (2).

3. The multi-specification screw cap picking forceps according to claim 2, characterized in that, The surface of the straight bar (2) of the tweezers is provided with a first elliptical hole (9), and the surface of the straight section (12) is provided with a second elliptical hole (10) corresponding to the first elliptical hole (9). The screw (41) passes through the first elliptical hole (9) and the second elliptical hole (10).

4. The multi-specification screw capping and tube picking forceps according to claim 1, characterized in that, A large-size limiting rib (51) is provided between the large-size groove (5) and the small-size groove (6), and a small-size limiting rib (61) is provided between the small-size groove (6) and the screwdriver end (7).

5. The multi-specification screw cap picking forceps according to claim 1, characterized in that, The two screwdriver ends (7) respectively include a large-size half screwdriver end (71) and a small-size half screwdriver end (72). Both the large-size half screwdriver end (71) and the small-size half screwdriver end (72) are arc-shaped structures. The surface of the large-size half screwdriver end (71) is provided with a large-size anti-slip protrusion (73), and the surface of the small-size half screwdriver end (72) is provided with a small-size anti-slip protrusion (74).

6. The multi-specification screw capping and tube picking forceps according to claim 5, characterized in that, The two screwdriver ends (7) also include terminal sidewalls (75), which are integrally formed with the large-size half screwdriver end (71), the small-size half screwdriver end (72), the large-size anti-slip boss (73), and the small-size anti-slip boss (74).

7. The multi-specification screw capping and tube picking forceps according to claim 1, characterized in that, The inner wall of the arc segment (11) of the tweezers body arc rod (1) is provided with a number of deformation grooves (13) with the same spacing, and the outer wall of the arc segment (11) of the tweezers body arc rod (1) is provided with a rounded corner surface.

8. The multi-specification screw cap picking forceps according to claim 1, characterized in that, The surface of the tweezers body rod (2) is provided with a cavity (21), and a plurality of reinforcing ribs (22) are provided in the cavity (21), and the outer wall surface of the tweezers body rod (2) is provided with rounded corners.

9. The multi-specification screw cap picking forceps according to claim 1, characterized in that, The curved rod (1) of the tweezers body is integrally formed with the straight rod (2) and the round rod (3) of the tweezers body.

10. The multi-specification screw cap picking forceps according to claim 1, characterized in that, The inner wall of the connection between the arc-shaped rod (1) and the straight rod (2) of the tweezers body is provided with an arc-shaped wall (100).

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