Wedge-opening type open lid pull bar, multi-row selectable quantity and speed open lid device and method for EP tubes

Abstract

The present invention provides a wedge-opening pull bar, an EP tube multi-row selectable quantity and speed opening device and method. The wedge-opening pull bar includes a wedge block, a pull rod and a wheel-type pull head. The wheel-type pull head is composed of at least one roller connected to the lower part of a pull handle frame through a rotating shaft. The wedge block is fixedly connected to the upper surface of one end of the pull rod. The surface of the pull handle frame not connected to the rotating shaft is fixedly connected to the other end of the pull rod. The EP tube multi-row selectable quantity and speed opening device includes two pressing plates, a base, and one or two wedge-opening pull bars. The pressing plates are hinged to both end faces of the base. The wedge-opening pull bar is slidably connected to the upper surface of the base through the lower part of the wedge block thereon and / or the pull rod. The present invention not only has the function of opening the cover, but also has the function of closing the cover. The opening efficiency is doubled compared with the prior art, and it is easy to perform the step-by-step opening operation.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental sample processing devices, and particularly relates to a wedge-opening pull bar, an EP tube multi-row selectable quantity and speed opening device with the pull bar, and an opening method thereof. Background Art

[0002] An EP tube is a small centrifuge tube that can be used in conjunction with a micro centrifuge for separating, freeze-drying, or storing samples of trace reagents. It is commonly used in experiments such as biochemistry and medical testing. Currently, a large number of EP tubes are required in many laboratory experiments, and the opening and capping of EP tubes involve very heavy work during extensive use. When frequently opening the lids with fingers, it is easy to cause hand pain or even injury, and the reagent may spill out during the opening process of the EP tube lid due to excessive force; in addition, using fingers can only open the lid of one EP tube at a time, resulting in low efficiency.

[0003] In response to the above problems, the patent application with the application number CN201921427629.9 discloses a rapid opening and capping device for centrifuge tubes. This device can complete the opening work of the lids of a row of centrifuge tubes with one operation and also has a capping function, improving the efficiency of the preliminary extraction work.

[0004] However, the above disclosed technology cannot select a step-by-step opening operation according to the experimental process, and only one row of centrifuge tube lids can be opened with one operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a wedge-opening pull bar that can complete the opening of the lids of two rows of EP tubes with one operation when used in combination with an EP tube base, and is also easy to implement a step-by-step opening operation.

[0006] The present invention also aims to provide an EP tube multi-row selectable quantity and speed opening device that not only has an opening function but also a capping function, can complete the opening work of the lids of two rows of EP tubes with one operation, and is easy to perform a step-by-step opening operation.

[0007] To achieve the above objectives, the present invention has the following technical solutions:

[0008] The present invention discloses a wedge-opening pull bar, which includes a wedge block, a pull rod, and a wheeled pull head. The wheeled pull head is composed of at least one roller connected to the lower part of the pull handle frame through a rotating shaft. The wedge block is fixedly connected to the upper surface of one end of the pull rod, and the surface of the pull handle frame that is not connected to the rotating shaft is fixedly connected to the other end of the pull rod.

[0009] Preferably, the lower edge of the inclined surface of the wedge block is perpendicular to the axial direction of the pull rod.

[0010] Preferably, the roller is made of plastic or elastomer material.

[0011] The present invention also discloses a multi-row selectable quantity and speed open-top device for EP tubes, which includes two pressing plates, a base, and a previously mentioned wedge-opening pull bar. In the middle of the upper surface of the base, there is a chute. On both sides of the chute, there is a row of EP tube jacks for holding EP tubes. Between the two parallel sides of the upper surface of the base and the EP tube jacks, there are limit rotation positioning blocks corresponding to the number of EP tube jacks. On the upper surface of the limit rotation positioning blocks, there are limit slots for embedding the connection parts of the EP tube caps. The central connection line of the limit slots and the axis of the EP tube jacks is perpendicular to the chute. On both side surfaces of the base parallel to the chute, there are grooves passing through the EP tube jacks. On the upper parts of both sides of the two end surfaces of the base, there are shaft holes for connecting the pressing plates through a rotating shaft. The pressing plate is composed of a top plate obliquely and fixedly connected to the lower surface of the pressing plate body. The top plate is a plate with one end being an inclined surface and the other end fixedly connected with an anti-slip elastic body sheet. The wedge-opening pull bar is slidably connected to the chute of the base through the lower part of the wedge block on it and / or the pull rod; or it includes two pressing plates, a base, and two previously mentioned wedge-opening pull bars, and the ends of the two wedge-opening pull bars with wedge blocks are connected together.

[0012] Preferably, the multi-row selectable quantity and speed open-top device for EP tubes further includes a buffer stop. The buffer stop includes an elastic object such as a spring or a rubber block, which is used to reduce the impact of the wedge-opening pull bar on the base during the opening process. The buffer stop is fixedly connected to the end of the base.

[0013] Preferably, on the vertical surfaces of the grooves on both sides of the base, there are anti-slip elastic body sheets made of materials such as rubber, which are used to increase the rotation and movement resistance of the EP tubes during the opening process and strengthen the positioning of the EP tubes.

[0014] Preferably, on the bottom of the base, there is an anti-slip rubber sheet made of sheet materials such as rubber to prevent the base from sliding.

[0015] The present invention also discloses an open-top method for the above-mentioned multi-row selectable quantity and speed open-top device for EP tubes. The open-top method includes the following steps:

[0016] S1. Move the wedge-opening pull bar to one end of the base so that all the EP tube jacks on the base are located between the wedge block and the handle frame.

[0017] S2. Insert the EP tube to be opened into the EP tube jack on the base, and make the connection convex part of the tube mouth of the EP tube and its upper lid fall into the limit slot on the limit rotation positioning block.

[0018] S3. Press down the pressing plates on both sides of the base with one hand, and hold the handle frame with the other hand to pull the wedge block towards the EP tube to be opened. The lids of the EP tubes passed by the wedge block will be pushed open by the wedge block.

[0019] Due to the above technical solutions, the advantages of the present invention are as follows:

[0020] 1. With the present invention, one hand can press down the pressing plate, and the other hand can pull the wedge-opening cover-lifting bar towards the side where the cover needs to be opened, so that the cover of the EP tube passed by the wedge-shaped block is pushed open; for the EP tube to be covered placed in the EP tube socket of the base, the pressing plate hinged to the side of the base can be turned up to press the EP tube cover into the tube orifice of the EP tube to achieve covering. The present invention has both the functions of opening the cover and covering the tube.

[0021] 2. After the wedge-opening cover-lifting bar of the present invention is pulled to one end of the base, the covers of the EP tubes passed by the wedge-shaped block on the wedge-opening cover-lifting bar are pushed open, achieving one-step rapid opening of the covers of two rows of EP tubes on the side of the wedge-shaped block with one pull, and its cover-opening efficiency is doubled compared with the prior art.

[0022] 3. The lower part of the base of the present invention is provided with an anti-slip film, and the cover-opening process is carried out sequentially, with smaller impact vibration during the cover-opening process, which can reduce the shaking generated during the cover-opening process and avoid sample spillage.

[0023] 4. The present invention can also gradually pull the wedge-opening cover-lifting bar to only push open the cover of the EP tube that needs to be opened currently, conveniently achieving step-by-step cover-opening as needed and further preventing contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 A perspective three-dimensional structure diagram of an overall structure example 1 of the cover-opening device provided by an embodiment of the present invention;

[0026] Figure 2 A three-dimensional structure diagram of the wedge-opening cover-lifting bar provided by an embodiment of the present invention;

[0027] Figure 3 For Figure 2 Schematic view in the direction of A;

[0028] Figure 4 For Figure 3 Cross-sectional view taken along line A-A;

[0029] Figure 5 For Figure 1 Schematic view when the wedge-opening cover-lifting bar is not connected in

[0030] Figure 6 is Figure 5 A three-dimensional structural schematic diagram of the middle base;

[0031] Figure 7 is Figure 6 An enlarged schematic diagram at position A in;

[0032] Figure 8 A three-dimensional structural schematic diagram of one perspective of the pressing plate provided by an embodiment of the present invention;

[0033] Figure 9 is Figure 8 A schematic diagram in the direction of A of;

[0034] Figure 10 is Figure 9 A left view schematic diagram of;

[0035] Figure 11 is Figure 1 A schematic diagram in the direction of A of;

[0036] Figure 12 is after the cover of the EP tube in the open state in is buckled by the pressing plate Figure 11 A schematic diagram after the operation;

[0037] Figure 13 is a schematic diagram of the capped EP tube placed on the open lid device of the present invention in the state of waiting for the lid to be opened;

[0038] Figure 14 A three-dimensional structural schematic diagram of one perspective of the overall structure example 2 of the open lid device provided by an embodiment of the present invention;

[0039] Figure 15 A three-dimensional structural schematic diagram of one perspective of the overall structure example 3 of the open lid device provided by an embodiment of the present invention;

[0040] Figure 16 is Figure 15 A schematic diagram of the connection relationship between two wedge-opening lid-pulling bars in;

[0041] In the figure: 1, rotating shaft; 2, EP tube; 3, shaft hole; 4, anti-slip elastic body sheet; 5, buffer stop; 6, anti-slip film; 10, wedge-opening lid-pulling bar; 11, wheel-type pulling head; 111, pulling handle frame; 112, roller; 12, pull rod; 13, wedge-shaped block; 131, inclined surface; 20, base; 21, base body; 22, EP tube insertion hole; 23, rotation-limiting positioning block; 231, limiting groove; 24, groove; 25, sliding groove; 30, pressing plate; 31, pressing plate body; 32, top plate; 321, plate. Detailed implementation manners

[0042] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", "left", "right", etc. are used to indicate the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0043] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0044] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 As shown in

[0045] See Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11, Embodiment 1 of the multi-row selectable quantity and quick-opening lid device for EP tubes disclosed in the present invention includes two pressing plates 30, a base 20, and a previously mentioned wedge-opening lid pulling bar 10. In the middle of the upper surface of the base 20, there is a sliding groove 25. On both sides of the sliding groove 25, there is a row of EP tube insertion holes 22 for holding EP tubes 2. Between the upper surface of the base 20 and the two sides parallel to the sliding groove 25 and the EP tube insertion holes 22, there are rotation-limiting positioning blocks 23 corresponding to the number of EP tube insertion holes 22. On the upper surface of the rotation-limiting positioning blocks 23, there are limit grooves 231 for embedding the connection parts of the EP tube lids. The center line connecting the center of the limit groove 231 and the axis of the EP tube insertion hole 22 is perpendicular to the sliding groove 25. On both side surfaces of the base 20 parallel to the sliding groove 25, there are grooves 24 penetrating the EP tube insertion holes 22. On the upper parts of both sides of the two end surfaces of the base 20, there are shaft holes 3 for connecting the pressing plates 30 through a rotating shaft 1. The pressing plate 30 is composed of a top plate 32 fixedly connected obliquely below the pressing plate body 31. The top plate 32 is a plate 321 with one end being an inclined surface and the other end fixedly connected with an anti-slip elastic body sheet 4. The pressing plate 30 is used to further press and fix the EP tube 2, and also used to press and fasten the lid of the EP tube 2 in the open state into the tube orifice of the EP tube 2. The wedge-opening lid pulling bar 10 is slidably connected to the sliding groove 25 of the base 20 through a pulling rod 12 thereon.

[0046] See Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 14 , Embodiment 2 of the multi-row selectable quantity and quick-opening lid device for EP tubes disclosed in the present invention includes two pressing plates 30, a base 20, a buffer stop 5, and a previously mentioned wedge-opening lid pulling bar 10. The buffer stop 5 is fixedly connected to the right end of the upper surface of the base 20. The two pressing plates 30 are respectively hinged to the shaft holes 3 of the base 20 through a rotating shaft 1. The wedge-opening lid pulling bar 10 is slidably connected to the sliding groove 25 of the base 20 through a pulling rod 12 thereon.

[0047] See Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 15 , Figure 16, Embodiment 3 of the multi-row selectable quantity and rapid opening and closing device for EP tubes disclosed by the present invention includes two pressing plates 30, a base 20, a buffer stop 5, and two of the aforementioned wedge-opening and closing pull bars 10. One end of the two wedge-opening and closing pull bars 10 where the wedge-shaped blocks 13 are provided is connected. The wedge-opening and closing pull bar 10 is slidably connected to the chute 25 of the base 20 through the pull rod 12 thereon. The buffer stop 5 is arranged at both ends of the base 20. The two pressing plates 20 are respectively hinged to the shaft holes 3 of the base 20 through the rotating shafts 1. In this embodiment, the inclined surfaces 131 of the two wedge-shaped blocks 13 face left and right respectively. By pulling the handle frames 111 on the wedge-opening and closing pull bars 10 located on both sides of the base 20 to the left or right respectively, the wedge-shaped blocks 13 can lift the lids of the EP tubes 2 to achieve opening the lids.

[0048] Before using the present invention, first place the side of the base 20 with the anti-slip film 6 facing down at an appropriate position on the operating table.

[0049] The method for buckling the tube lids of the opened EP tubes 2 by the multi-row selectable quantity and rapid opening and closing device for EP tubes disclosed by the present invention:

[0050] S1. Refer to Figure 1 , Figure 14 , Figure 15 , first pull the wedge-opening and closing pull bar 10 away from the base 20, or push or pull the wedge-opening and closing pull bar 10 to the leftmost or rightmost end of the base 20 (i.e., move the wedge-shaped block 13 to a position where it will not interfere with the buckling of the tube lid);

[0051] S2. Insert the opened EP tube 2 into the EP tube insertion hole 22 on the base 20, and make the connection convex part between the tube orifice of the EP tube 2 and its upper lid fall into the limit groove 231 on the limit rotation positioning block 23;

[0052] S3. Add the target sample into the EP tube 2 that has been placed in place;

[0053] S4. Refer to Figure 12 , Figure 13 , rotate the pressing plate 30 on the side where the lid is to be buckled upward around the rotating shaft 1 by hand until the inner edge of the pressing plate 30 presses the tube lid into the tube orifice of the EP tube 2 to complete the lid buckling operation.

[0054] The method for opening the EP tube 2 with the tube lid in the buckled state by the multi-row selectable quantity and rapid opening and closing device for EP tubes disclosed by the present invention:

[0055] S1. Refer to Figure 1 , Figure 14 , Figure 15 , first push the wedge-opening and closing pull bar 10 to the leftmost end;

[0056] S2. Insert the EP tube 2 to be opened into the EP tube socket 22 on the base 20, and make the connection convex part of the mouth of the EP tube 2 and its upper lid fall into the limit groove 231 on the limit rotation positioning block 23;

[0057] S3. Press down the pressing plates 30 on both sides of the base 20 with one hand, and hold the handle frame 111 with the other hand to pull the wedge-opening pull bar 10 towards the EP tube 2 to be opened (that is Figure 1 , Figure 14 , Figure 15 the right side), and the lid of the EP tube 2 passed by the wedge block 13 will be pushed open by the wedge block 13 (if it is necessary to open the lids of all the EP tubes 2 in the EP tube sockets 22 at one time, at this time, directly pull the wedge-opening pull bar 10 to the right until the wedge block 13 passes through all the EP tubes 2; if high anti-pollution requirements are required, the lids of the EP tubes 2 in the EP tube sockets 22 can be opened in a step-by-step opening manner. At this time, only need to pull the wedge-opening pull bar 10 to the right until the wedge block 13 passes through the EP tubes 2 that need to be opened).

[0058] The above embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is impossible to list all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An EP tube multi-row selectable quantity and speed open cover device, characterized in that: It includes two pressure plates, a base, and a wedge-opening pull bar for opening the lid. The wedge-opening pull bar for opening the lid includes a wedge-shaped block, a pull rod, and a wheel-type pull head. The wheel-type pull head is composed of at least one roller connected to the lower part of the handle frame through a rotating shaft. The wedge-shaped block is fixedly connected to the upper surface of one end of the pull rod. The side of the handle frame not connected to the rotating shaft is fixedly connected to the other end of the pull rod; The lower edge of the inclined surface of the wedge-shaped block is perpendicular to the axial direction of the pull rod; The roller is made of plastic or elastomer material; In the middle of the upper surface of the base, there is a chute. On both sides of the chute, there is a row of EP tube sockets for holding EP tubes. Between the two sides of the upper surface of the base parallel to the chute and the EP tube sockets, there are rotation-limiting positioning blocks corresponding to the number of EP tube sockets. On the upper surface of the rotation-limiting positioning block, there is a limiting groove for embedding the connection part of the EP tube lid. The center line connecting the center of the limiting groove and the axis of the EP tube socket is perpendicular to the chute. On both side surfaces of the base parallel to the chute, there are grooves penetrating the EP tube sockets. On the upper parts of both ends of the base, there are shaft holes for connecting the pressure plates through rotating shafts. The pressure plate is formed by obliquely and fixedly connecting a top plate under the pressure plate body. The top plate is a plate with one end being an inclined surface and the other end fixedly connected with an anti-slip elastomer sheet. The wedge-opening pull bar for opening the lid is slidably connected to the chute of the base through the lower part of the wedge-shaped block thereon and / or the pull rod; or it includes two pressure plates, a base, and two wedge-opening pull bars for opening the lid, and the ends of the two wedge-opening pull bars with wedge-shaped blocks are connected together.

2. The multi-row selectable quantity and quick-opening cover device for EP tubes according to claim 1, characterized in that: It further includes a buffer stop, and the buffer stop is fixedly connected to the end of the base.

3. The multi-row selectable quantity speed-opening cover device for EP tubes according to claim 1, characterized in that: Anti-slip elastomer sheets are provided on the vertical surfaces of the grooves on both sides of the base.

4. The multi-row selectable quantity and quick-opening cover device for EP tubes according to any one of claims 1 to 3, characterized in that: Anti-slip rubber sheets for preventing the base from sliding are provided at the bottom of the base.

5. An open - lid method for an EP tube multi - row selectable quantity and speed open - lid device according to any one of claims 1 - 4, characterized in that, It includes: S1. Move the wedge-opening pull bar for opening the lid to one end of the base so that all the EP tube sockets on the base are located between the wedge-shaped block and the handle frame; S2. Insert the EP tube to be opened into the EP tube socket on the base, and make the connection convex part of the tube mouth of the EP tube and its upper lid fall into the limiting groove on the rotation-limiting positioning block; S3. With one hand, press down the pressure plates on both sides of the base, and with the other hand, hold the handle frame and pull the wedge-shaped block towards the EP tube to be opened, and the lids of the EP tubes passed by the wedge-shaped block will be pushed open by the wedge-shaped block.

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