Cap opener for centrifugal tube

Abstract

The utility model relates to a centrifugal tube cap opener which comprises an elastic lock unit and a handle, and the handle is arranged on one side face of the elastic lock unit. The elastic lock unit comprises a shell provided with a containing cavity, a reset spring, a sliding block, a drag hook and a pull ring, the reset spring, the sliding block, the drag hook and the pull ring are arranged in the containing cavity, the two sides of the sliding block abut against the inner walls of the two sides of the shell and can vertically slide along the inner walls of the shell, a through hole is formed in the bottom end of the shell, one end of the drag hook is fixedly connected with the sliding block, and the other end of the drag hook is fixedly connected with the pull ring. One end of the sliding block is provided with a through hole, the other end of the sliding block penetrates through the shell through the through hole and can enter and exit from the shell along the through hole, and the sliding block is provided with a guide groove formed inwards from the bottom, so that a hanging part is formed in the sliding block; one end of the pull ring is fixed to the bottom of the shell, the other end of the pull ring is of an annular structure, and in the initial state of the reset spring, the end of the annular structure extends into the bottom opening of the guide groove. The utility model has the advantages that the cross contamination is prevented, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological laboratory equipment, in particular to a centrifuge tube cover opener. Background Art

[0002] Centrifugation technology has been widely used in biological sciences, especially in the fields of biochemistry and molecular biology research. Each biochemistry and molecular biology laboratory must prepare various types of centrifuges. Centrifugation technology is mainly used for the separation and preparation of various biological samples. The biological sample suspension is placed in a centrifuge tube and rotates at high speed. Due to the huge centrifugal force, the suspended tiny particles settle at a certain speed and are separated from the solution. However, it is troublesome to open the cap of the centrifuge tube. Opening it with bare hands is not only easy to cause hand injuries, but also prone to cross infection, thus affecting the accuracy of the experiment.

[0003] At present, in experiments, centrifuge tubes are required to have lids, and the lids must be tightly covered and sealed to prevent liquid leakage or external contamination, which brings inconvenience to opening the lids. When conducting experiments with a large number of samples, opening the centrifuge tubes is a frequent and laborious operation for the experimenters. Only one centrifuge tube can be opened at a time with one hand. Not only is the opening speed slow, but the lid is also easily contaminated by gloves during the opening process, causing cross-contamination between samples, affecting the accuracy of the experiment, and the high-intensity opening work will make the experimenters' fingers particularly painful, and even injured. In some experiments, organic reagents are used to dissolve the marks on the centrifuge tube wall and lid, affecting the efficiency of the experiment. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a centrifuge tube cover opener that can reduce the labor intensity of operators, prevent cross contamination, and improve work efficiency.

[0005] The centrifuge tube cover opener of the utility model is realized by the following detailed technical scheme:

[0006] A centrifuge tube cover opener, comprising a spring lock unit and a handle, wherein the handle is arranged on one side of the spring lock unit; the spring lock unit comprises a shell provided with a receiving cavity and a reset spring, a slider, a draw hook and a pull ring arranged in the receiving cavity, one end of the reset spring is fixedly connected to the top of the inner wall of the shell, and the other end is fixedly connected to the top of the slider; the two sides of the slider abut against the inner walls of the shell on both sides and can slide up and down along the inner wall of the shell, the bottom end of the shell is provided with a through hole, one end of the draw hook is fixedly connected to the slider, and the other end passes through the shell through the through hole and The housing can be moved in and out of the housing along the through hole, and the slider is provided with a guide groove opened inward from the bottom, so that a hanging portion is formed inside the slider; one end of the pull ring is fixed to the bottom of the housing, and the other end of the pull ring is an annular structure. In the initial state of the reset spring, the end of the annular structure extends into the bottom opening of the guide groove, and when the slider slides downward, the annular structure enters the guide groove and can be sleeved on the hanging portion; when the slider continues to slide downward, the annular structure can detach from the hanging portion and escape from the guide groove, and the reset spring drives the slider to slide upward.

[0007] Compared with the prior art, the centrifuge tube cover opener of the present invention is provided with a spring lock unit composed of a reset spring, a slider and a pull ring, and the relative movement of the guide groove in the slider and the pull ring is cleverly used to enable the pull ring to spring lock and fix the slider, and the change of the slider spring lock state can affect the state of the reset spring to provide sufficient spring tension for the pull hook to open the cover, so that scientific researchers do not need to manually open the cover, which effectively reduces the labor intensity. In addition, the centrifuge tube cover opener of the present invention has a delicate and simple structure and can open the cover multiple times in a short time, which effectively improves the work efficiency. The present invention also blocks the splashing of liquid in the centrifuge tube through the baffle and the cover opening baffle, prevents liquid splashing, effectively maintains the safety of the experiment and ensures the efficiency of the experiment.

[0008] Furthermore, the guide groove includes a first guide groove, a second guide groove and a third guide groove surrounding the hanging part, the first guide groove extends upward from the bottom of the slider, the second guide groove intersects with the first guide groove, and the third guide groove is V-shaped and its two ends are respectively connected with the first guide groove and the second guide groove; when the slider slides downward, the annular structure enters the first guide groove and is sleeved on the hanging part, and the end of the annular structure is located at the V-shaped center of the third guide groove; when the annular structure is separated from the hanging part, the end of the annular structure enters the second guide groove and the first guide groove in turn from the third guide groove. The setting of the first guide groove, the second guide groove and the third guide groove allows the pull ring to better contact with the hanging part, and the V-shaped structure of the third guide groove allows the annular structure of the pull ring to be stably fixed on the hanging part.

[0009] Furthermore, the first guide groove is parallel to the movement direction of the slider, and the first guide groove and the second guide groove form a Y-shape. The Y-shaped first guide groove and the second guide groove make the pull ring move more smoothly in the guide groove.

[0010] Furthermore, slide rails are provided at positions where the two side walls inside the shell are connected to the slide block, and the slide block slides along the slide rails.

[0011] Furthermore, the outer surface of the housing is also provided with a cover opening baffle, which is arranged at the bottom end of the housing and parallel to the bottom surface of the housing. The cover opening baffle can prevent the centrifuge tube from being opened too much to cause the liquid in the tube to splash out.

[0012] Furthermore, the centrifuge tube cover opener also includes a baffle, which is arranged on the side of the spring lock unit opposite to the handle, and the baffle includes a working surface in contact with the centrifuge tube and a connecting surface connected to the spring lock unit. The setting of the baffle can prevent cross contamination of samples in the centrifuge tube.

[0013] Furthermore, the baffle is a curved plate, which can better fit the centrifuge tube and prevent the liquid in the centrifuge tube from splashing out.

[0014] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the centrifuge tube cover opener of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the spring lock unit of the cover opening device;

[0017] Figure 3 for Figure 2 Schematic diagram of the pull ring structure of the spring lock unit;

[0018] Wherein: 1: baffle, 11: working surface, 12: connecting surface, 2: spring lock unit, 21: shell, 211: through hole, 212: cover opening baffle, 22: return spring, 23 slider, 231: guide groove, 231A: first guide groove, 231B: second guide groove, 231C: third guide groove, 232: hanging part, 24: pull hook, 25: pull ring, 3: handle. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0021] See also Figure 1 The centrifuge tube cover opener of the utility model comprises a baffle plate 1, a spring lock unit 2 and a handle 3 which are connected in sequence, and the baffle plate 1 and the handle 3 are arranged on two side surfaces of the spring lock unit 2 opposite to each other.

[0022] The baffle 1 includes a working surface 11 in contact with the centrifuge tube and a connecting surface 12 connected to the spring lock unit. Preferably, the baffle 1 is an arc-shaped plate, and the working surface 11 is the inner surface of the arc-shaped plate facing the arc center, and the inner surface can fit the centrifuge tube. The arc-shaped plate can not only fix the centrifuge tube, but also prevent the liquid in the centrifuge tube from splashing.

[0023] See also Figure 2 The spring lock unit 2 includes a shell 21 with an accommodating chamber and a reset spring 22, a slider 23, a hook 24 and a pull ring 25 arranged in the accommodating chamber. One end of the reset spring 22 is fixedly connected to the top of the inner wall of the shell 21, and the other end is fixedly connected to the top of the slider 23. Both sides of the slider 23 abut against the inner walls of the shell 21 and can slide up and down along the inner walls of the shell 21. A through hole 211 is provided at the bottom of the shell 21. One end of the hook 24 is fixedly connected to the slider 23, and the other end passes through the shell 21 through the through hole 211 and can enter and exit the shell 21 along the through hole 211. The slider 23 is provided with a guide groove 231 opened inward from the bottom, so that a hanging portion 232 is formed inside the slider 23. Please refer to Figure 3, one end of the pull ring 25 is fixed to the bottom of the housing 21, and the other end of the pull ring 25 is an annular structure. In the initial state of the reset spring 22, the end of the annular structure extends into the bottom opening of the guide groove 231, and when the slider 23 slides downward, the annular structure enters the guide groove 231 and can be sleeved on the hanging portion 232; when the slider 23 continues to slide downward, the annular structure can be separated from the hanging portion 232 and escape from the guide groove 231, and the reset spring 22 drives the slider 23 to slide upward.

[0024] Preferably, the guide groove 231 includes a first guide groove 231A, a second guide groove 231B and a third guide groove 231C surrounding the hanging portion 232, the first guide groove 231A extending upward from the bottom of the slider 23, the extension direction being parallel to the movement direction of the slider 23, the second guide groove 231B intersecting with the first guide groove 231A to form a Y shape. The third guide groove 231C is V-shaped and its two ends are respectively connected to the first guide groove 231A and the second guide groove 231B; when the slider 23 slides downward, the annular structure enters the first guide groove 231A and is sleeved on the hanging portion 232, and the end of the annular structure is located at the V-shaped center of the third guide groove 231C; when the annular structure is separated from the hanging portion 232, the end of the annular structure enters the second guide groove 231B and the first guide groove 231A in sequence from the third guide groove 231C.

[0025] Preferably, slide rails are provided at the positions where the two side walls inside the housing 21 are connected to the slide block 23 , and the slide block 23 slides along the slide rails.

[0026] Preferably, the outer surface of the housing 21 is further provided with a cover opening baffle 212, which is arranged at the bottom end of the housing 21 and parallel to the bottom surface of the housing 21. The cover opening baffle 212 can prevent the centrifuge tube cover from opening too much, causing the liquid in the centrifuge tube to splash out.

[0027] The working principle of the utility model is as follows:

[0028] When the centrifuge tube cover opener is in an unadjusted state, the reset spring 22 is in a normal state, and the pull ring 25 is at the intersection of the first guide groove 231A and the second guide groove 231B and close to the bottom end of the slider 23. At this time, the user holds the shell 21 of the centrifuge tube cover opener with one hand to keep it relatively still, and holds the retractor with the other hand to pull the retractor 24 to move downward relative to the shell 21. The slider 23 will move downward under the drive of the retractor 24. At this time, the pull ring 25 is fixed, but the annular structure of the pull ring will move relatively upward along the first guide groove 231A under the action of the downward movement of the slider. When the annular structure of the pull ring 25 moves relatively upward to the top of the first guide groove 231A, it cannot continue to move due to the limitation of the structure of the first guide groove 231A. Continuing upward, the annular structure of the pull ring can only move relatively horizontally into the third guide groove 231C. Since the return spring 22 has entered the stretched state under the pull of the slider 23, the slider 23 has a tendency to move upward. When the annular structure of the pull ring 25 enters the third guide groove 231C, it will smoothly enter the center of the third guide groove 231C along the single-side channel of the third guide groove 231C under the action of the slider 23 moving upward. At this time, the annular structure of the pull ring 25 is just sleeved and fixed on the hanging part 232. Due to the V-shaped structure of the third guide groove 231C, when the annular structure of the pull ring 25 is in the hanging part 232, the annular structure of the pull ring 25 can only move relatively upward to leave the third guide groove 231C. At this time, the slider 23 only has a tendency to move upward, that is, the annular structure only has a tendency to move downward. Therefore, at this time, the annular structure of the pull ring 25 abuts against the third guide groove 231C to temporarily fix the slider 23.

[0029] When the cover needs to be opened, the user holds the centrifuge tube in one hand and holds the handle 3 of the centrifuge tube cover opener in the other hand. First, the cover opening side of the centrifuge tube cover faces the cover opening device, and the hook 24 is set below the side of the centrifuge tube to be opened. At this time, the user only needs to hold the centrifuge tube with one hand to keep it relatively still, and the user's other hand holds the shell 21 of the centrifuge tube cover opener of the utility model and drives the shell 21 to move upward relative to the centrifuge tube. At this time, the hook 24 will remain still relative to the centrifuge tube due to abutment with the centrifuge tube, but at this time, the hook 24 moves downward relative to the shell 21, and the slider 23 also moves downward relative to the shell 21 under the drive of the hook 24. The annular structure of the pull ring 25 will move upward from the third guide groove 231C to the second guide groove 231B at this time. At this time, the relative fixing effect of the pull ring 25 on the slider 23 is released, and the reset spring 22 in the stretched state will pull the slider 23 upward and then drive the hook 24 to pull upward. At this time, the pull ring 25 will move relatively along the second guide groove 231B to the first guide groove 231A. The cover can be opened again by repeating the above process.

[0030] Compared with the prior art, the centrifuge tube cover opener of the present invention is provided with a spring lock unit 2 composed of a reset spring 22, a slider 23, a draw hook 24 and a pull ring 25, and the guide groove 231 of the slider 23 is cleverly used to enable the pull ring 25 to spring lock and fix the slider 23, and the change of the spring lock state of the slider 23 can affect the state of the reset spring 22, thereby providing sufficient spring tension for the draw hook 24 to open the cover, so that scientific researchers do not need to manually open the cover, which effectively reduces the labor intensity, and the centrifuge tube cover opener of the present invention has a delicate and simple structure, can open the cover multiple times in a short time, and effectively improves the work efficiency. The present invention also blocks the splashing of liquid in the centrifuge tube through the baffle 1 and the cover opening baffle 212, prevents liquid splashing, effectively maintains the safety of the experiment and ensures the efficiency of the experiment.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A centrifuge tube cover opener, characterized in that: The invention comprises a spring lock unit and a handle, wherein the handle is arranged on one side of the spring lock unit; the spring lock unit comprises a shell provided with an accommodating cavity and a reset spring, a slider, a draw hook and a pull ring arranged in the accommodating cavity, one end of the reset spring is fixedly connected to the top of the inner wall of the shell, and the other end is fixedly connected to the top of the slider; the two sides of the slider abut against the inner walls of the two sides of the shell and can slide up and down along the inner wall of the shell, a through hole is arranged at the bottom end of the shell, one end of the draw hook is fixedly connected to the slider, and the other end passes through the shell through the through hole and can slide along the inner wall of the shell. The shell body is provided with a through hole for entering and exiting, and the slider is provided with a guide groove opened from the bottom inward, so that a hanging portion is formed inside the slider; one end of the pull ring is fixed to the bottom of the shell body, and the other end of the pull ring is an annular structure. In the initial state of the reset spring, the end of the annular structure extends into the bottom opening of the guide groove, and when the slider slides downward, the annular structure enters the guide groove and can be sleeved on the hanging portion; when the slider continues to slide downward, the annular structure can detach from the hanging portion and escape from the guide groove, and the reset spring drives the slider to slide upward.

2. The centrifuge tube cover opener according to claim 1, characterized in that: The guide groove includes a first guide groove, a second guide groove and a third guide groove surrounding the hanging portion, the first guide groove extends upward from the bottom of the slider, the second guide groove intersects with the first guide groove, and the third guide groove is V-shaped and its two ends are respectively connected to the first guide groove and the second guide groove; when the slider slides downward, the annular structure enters the first guide groove and is sleeved on the hanging portion, and the end of the annular structure is located at the V-shaped center of the third guide groove; when the annular structure is detached from the hanging portion, the end of the annular structure enters the second guide groove and the first guide groove in sequence from the third guide groove.

3. The centrifuge tube cover opener according to claim 2, characterized in that: The first guide groove is parallel to the movement direction of the slider, and the first guide groove and the second guide groove form a Y shape.

4. The centrifuge tube cover opener according to claim 1, characterized in that: Slide rails are also provided at the positions where the two side walls inside the shell are connected to the slide block, and the slide block slides along the slide rails.

5. The centrifuge tube cover opener according to claim 1, characterized in that: The outer surface of the shell is also provided with a cover opening baffle, which is arranged at the bottom end of the shell and is parallel to the bottom surface of the shell.

6. The centrifuge tube cover opener according to claim 1, characterized in that: The centrifuge tube cover opener also includes a baffle, which is arranged on the side of the spring lock unit opposite to the handle, and includes a working surface in contact with the centrifuge tube and a connecting surface connected to the spring lock unit.

7. The centrifuge tube cover opener according to claim 6, characterized in that: The baffle is an arc-shaped plate.

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