A flexible clamping and ejection plate structure for a pipette tip in an enzyme immunoassay analyzer

Abstract

This utility model relates to the field of material uncoiling technology and provides an elastic clamping and ejection plate structure for a pipette tip in an enzyme immunoassay analyzer. The structure includes a support; pipette bodies symmetrically fixedly connected to both sides of the bottom end of the support; a cylinder fixedly connected to the support; the output end of the cylinder passing through the support and fixedly connected to a fixing plate; a fixing seat at the bottom end of the fixing plate; and a main ejection plate fixedly connected to the bottom end of the fixing seat. Fixing springs symmetrically fixedly connected to both sides of the top end of the main ejection plate are also included, with the top ends of the springs fixedly connected to the bottom end of the support. A secondary ejection plate is provided at one end of the main ejection plate, and ejection grooves are formed on both sides of the secondary and main ejection plates. This elastic clamping and ejection plate structure for an enzyme immunoassay analyzer utilizes a positioning component to connect the secondary and main ejection plates, facilitating adjustment for different numbers of pipette tips on the pipette body and allowing for the use of pipette bodies of different specifications, thus improving its practicality.

Description

Technical Field

[0001] This utility model belongs to the field of material uncoiling technology, and particularly relates to an elastic clamping and ejection plate structure for a pipette head of an enzyme immunoassay analyzer. Background Technology

[0002] An enzyme immunoassay analyzer is an instrument used to detect enzyme activity in biological samples. During its use, it needs to be used with a pipette to accurately measure and transfer liquids. The pipette usually needs to be used with disposable plastic pipette tips (commonly known as pipette tips). After the experiment is completed, the used pipette tips need to be removed from the pipette.

[0003] Chinese patent disclosure CN212120062U discloses an automatic pipette tip removal device, which includes a support, a push plate, and a power mechanism. The push plate is slidably mounted on the support and is perpendicular to the support. The push plate has a slot, and the pipette has a locking part that engages with the slot. The power mechanism is connected to the push plate and is used to drive the push plate to move in a first direction to push the pipette tip sleeved on the pipette. This invention can realize automatic pipette tip removal operation.

[0004] However, the above solution is inconvenient to adjust according to the number of pipette tips. The number of slots on the push plate is fixed, which makes it impossible to disengage the pipette tips at the same time when there are many pipette tips, resulting in low practicality. Therefore, it is necessary to design an elastic clamping and disengaging plate structure for the pipette tips of an enzyme immunoassay analyzer. Utility Model Content

[0005] This invention provides a flexible clamping and retraction plate structure for pipette tips in an enzyme immunoassay analyzer, aiming to solve the problem that some currently used flexible clamping and retraction plate structures are inconvenient to adjust according to the number of pipette tips.

[0006] This invention is implemented as follows: an elastic clamping and ejection plate structure for a pipette tip in an enzyme immunoassay analyzer includes a support; a pipette body symmetrically fixedly connected to both sides of the bottom end of the support, a cylinder fixedly connected to the support, the output end of the cylinder penetrating the support and fixedly connected to a fixing plate, a fixing seat at the bottom end of the fixing plate, and a main ejection plate fixedly connected to the bottom end of the fixing seat; an installation assembly assembled between the fixing seat and the fixing plate, the installation assembly being used to assemble and disassemble the fixing seat and the fixing plate; fixing springs symmetrically fixedly connected to both sides of the top end of the main ejection plate, the top end of the fixing springs being fixedly connected to the bottom end of the support, a secondary ejection plate at one end of the main ejection plate, ejection grooves on both sides of the secondary ejection plate and the main ejection plate; and a positioning assembly assembled between the secondary ejection plate and the main ejection plate, the positioning assembly being used to assemble the secondary ejection plate and the main ejection plate.

[0007] Preferably, the positioning assembly includes: a sliding groove formed on one side of the secondary and main retracting plates, a positioning groove formed inside the secondary and main retracting plates on the inner top wall of the sliding groove, a slider movably connected inside the positioning groove, a positioning rod fixedly connected to the bottom end of the slider extending into the sliding groove, and a pull rod fixedly connected to the top end of the slider extending out of the positioning groove; a positioning spring wound around the surface of the pull rod, the two ends of the positioning spring being fixedly connected to the top end of the slider and the inner top wall of the positioning groove, respectively; and a sliding plate fixedly connected to the other side of the secondary and main retracting plates, a positioning hole formed at one end of the top of the sliding plate.

[0008] Preferably, the sliding plate and the interior of the sliding groove form a sliding engagement structure, and the sliding groove and the sliding plate are inverted convex in shape.

[0009] Preferably, a sliding structure is formed between the slider and the interior of the positioning groove, and the slider and the positioning groove are cross-shaped.

[0010] Preferably, the bottom end of the positioning rod and the inside of the positioning hole form an engaging structure, and the depth of the positioning hole is less than the distance between the top of the slider and the top wall of the positioning groove.

[0011] Preferably, the mounting assembly includes: mounting slots equally spaced at the top of the fixing base, and fixing bolts extending into the mounting slots being movably connected equally spaced on the front of the fixing base; and mounting blocks equally spaced and fixedly connected to the bottom of the fixing plate, the mounting blocks having bolt holes threaded to one end of the fixing bolts on their front.

[0012] Preferably, the mounting block and the interior of the mounting groove form an engaging structure, and the mounting groove and the mounting block are I-shaped.

[0013] Preferably, sliding rods are fixedly connected to both sides of the top end of the main ejector plate, and sliding sleeves are fixedly connected to both sides of the bottom end of the bracket.

[0014] Preferably, the sliding rod and the inner wall of the sliding sleeve form a sliding structure, and the inner wall of the sliding sleeve and the sliding rod are in the shape of an isosceles trapezoid.

[0015] Compared with related technologies, the elastic clamping and ejection plate structure for the pipette head of the enzyme immunoassay analyzer provided by this utility model has the following beneficial effects: 1. By sliding the sliding plate into the sliding groove and using the elastic force of the positioning spring, the positioning rod slides into the positioning hole, realizing the splicing and assembly of the main ejection plate and the secondary ejection plate or the secondary ejection plate and the secondary ejection plate. This can meet the ejection of pipette tips of different numbers, allowing it to be assembled according to different situations, thus improving its practicality.

[0016] 2. By engaging the bolt holes with the mounting groove and then using the threaded connection between the fixing bolts and the bolt holes, the mounting plate and the mounting base are fixed together. This allows for the disassembly and assembly of the main plate, facilitating its overall disassembly for maintenance or installation on brackets of different specifications, thus improving its practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the main and auxiliary ejector plates after splicing. Figure 2 This is a schematic diagram of the overall structure of the present invention after the secondary ejector plate has been disassembled and viewed from below. Figure 3 This is a partial exploded view of the main ejector plate and mounting components of this utility model; Figure 4 This is a partial exploded cross-sectional view of the main and auxiliary ejector plates of this utility model; Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Support; 2. Pipette body; 3. Positioning assembly; 301. Sliding groove; 302. Sliding plate; 303. Pull rod; 304. Positioning spring; 305. Positioning hole; 306. Slider; 307. Positioning rod; 308. Positioning groove; 4. Secondary ejection plate; 5. Main ejection plate; 6. Mounting assembly; 601. Mounting groove; 602. Fixing bolt; 603. Mounting block; 604. Bolt hole; 7. Cylinder; 8. Sliding sleeve; 9. Fixing seat; 10. Ejection groove; 11. Sliding rod; 12. Fixing plate; 13. Fixing spring. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Example 1 A preferred embodiment of the elastic clamping and retraction plate structure for the pipette tip of the enzyme immunoassay analyzer provided by this utility model is, for example... Figures 1 to 5 The diagram shows an elastic clamping and ejection plate structure for a pipette tip in an enzyme immunoassay analyzer, comprising a support 1; a pipette body 2 symmetrically fixedly connected to both sides of the bottom end of the support 1, a cylinder 7 fixedly connected to the support 1, the output end of the cylinder 7 passing through the support 1 and fixedly connected to a fixing plate 12, a fixing seat 9 provided at the bottom end of the fixing plate 12, and a main ejection plate 5 fixedly connected to the bottom end of the fixing seat 9; an installation assembly 6 assembled between the fixing seat 9 and the fixing plate 12, the installation assembly 6 being used to assemble and disassemble the fixing seat 9 and the fixing plate 12; fixing springs 13 symmetrically fixedly connected to both sides of the top end of the main ejection plate 5, the top end of the fixing springs 13 being fixedly connected to the bottom end of the support 1, a secondary ejection plate 4 provided at one end of the main ejection plate 5, ejection grooves 10 opened on both sides of the secondary ejection plate 4 and the main ejection plate 5; and a positioning assembly 3 assembled between the secondary ejection plate 4 and the main ejection plate 5, the positioning assembly 3 being used to assemble the secondary ejection plate 4 and the main ejection plate 5.

[0022] It should be noted that the existing elastic clamping and ejection plate structures for pipette tips in some enzyme immunoassay analyzers still have certain shortcomings in actual use. The number of slots on the push plate is fixed, which makes it impossible to eject pipette tips at the same time when there are many pipette tips, thus resulting in low practicality.

[0023] In a further preferred embodiment of this utility model, the positioning component 3 includes: a sliding groove 301 formed on one side of the auxiliary plate 4 and the main plate 5; a positioning groove 308 formed inside the auxiliary plate 4 and the main plate 5 on the inner top wall of the sliding groove 301; a slider 306 movably connected inside the positioning groove 308; a positioning rod 307 extending into the sliding groove 301 fixedly connected to the bottom end of the slider 306; and a pull rod 303 extending out of the positioning groove 308 fixedly connected to the top end of the slider 306; a positioning spring 304 wound around the surface of the pull rod 303; and two ends of the positioning spring 304 fixedly connected to the top end of the slider 306 and the inner top wall of the positioning groove 308, respectively; and a sliding plate 302 fixedly connected to the other side of the auxiliary plate 4 and the main plate 5; a positioning hole 305 formed at one end of the top of the sliding plate 302.

[0024] In this embodiment, by pulling the lever 303, the slider 306 and the positioning rod 307 slide and compress the positioning spring 304 inside the positioning groove 308 until they are completely disengaged from the inside of the sliding groove 301. Then, the sliding plate 302 at the secondary ejector plate 4 slides and engages with the inside of the sliding groove 301. Then, the lever 303 is released, and the elastic force of the positioning spring 304 causes the slider 306 and the positioning rod 307 to slide and engage with the inside of the positioning hole 305, thereby achieving the limiting and fixing of the sliding plate 302 after sliding engagement with the inside of the sliding groove 301. This enables the splicing and assembly between the secondary ejector plate 4 and the main ejector plate 5, or between the secondary ejector plates 4 and the secondary ejector plate 5.

[0025] In a further preferred embodiment of the present invention, a sliding engagement structure is formed between the interior of the sliding plate 302 and the sliding groove 301, and the sliding groove 301 and the sliding plate 302 are inverted convex in shape.

[0026] In this embodiment, the sliding engagement between the inverted convex sliding plate 302 and the sliding groove 301 is used to improve the firmness and stability of the initial sliding engagement between the secondary retractor plate 4 and the main retractor plate 5 or between the secondary retractor plate 4 and the secondary retractor plate 5.

[0027] In a further preferred embodiment of the present invention, a sliding structure is formed between the slider 306 and the positioning groove 308, and the slider 306 and the positioning groove 308 are cross-shaped.

[0028] In this embodiment, the smoothness of the up-and-down sliding of the positioning rod 307 is improved by utilizing the sliding between the cross-shaped slider 306 and the inside of the positioning groove 308.

[0029] In a further preferred embodiment of the present invention, the bottom end of the positioning rod 307 and the interior of the positioning hole 305 form an engaging structure, and the depth inside the positioning hole 305 is less than the distance between the top end of the slider 306 and the inner top wall of the positioning groove 308.

[0030] In this embodiment, the engagement between the positioning rod 307 and the positioning hole 305 improves the firmness and stability of the sliding engagement between the sliding plate 302 and the sliding groove 301.

[0031] Example 2 Based on Example 1, a preferred embodiment of the elastic clamping and retraction plate structure for the enzyme immunoassay analyzer pipette head provided by this invention is, for example... Figures 1 to 5 As shown: The mounting component 6 includes: mounting grooves 601 that are equally spaced on the top of the fixing base 9, and fixing bolts 602 that extend into the mounting grooves 601 are movably connected at equal intervals on the front of the fixing base 9; and mounting blocks 603 that are equally spaced and fixedly connected to the bottom of the fixing plate 12, and bolt holes 604 that are threaded to one end of the fixing bolts 602 are provided on the front of the mounting blocks 603.

[0032] In this embodiment, the main ejector plate 5 is disassembled and assembled by using the engagement between the mounting block 603 and the mounting groove 601, and by using the thread engagement between the fixing bolt 602 and the mounting block 603, which facilitates disassembly and maintenance or installation on different brackets 1.

[0033] In a further preferred embodiment of the present invention, the mounting block 603 and the mounting groove 601 form an interlocking structure, and the mounting groove 601 and the mounting block 603 are I-shaped.

[0034] In this embodiment, the engagement between the I-shaped mounting block 603 and the mounting groove 601 is used to improve the firmness and stability of the initial engagement between the fixing plate 12 and the fixing seat 9.

[0035] In a further preferred embodiment of this utility model, sliding rods 11 are fixedly connected to both sides of the top end of the main ejector plate 5, and sliding sleeves 8 are fixedly connected to both sides of the bottom end of the bracket 1.

[0036] In a further preferred embodiment of the present invention, a sliding structure is formed between the sliding rod 11 and the inner wall of the sliding sleeve 8, and the inner wall of the sliding sleeve 8 and the sliding rod 11 are in the shape of an isosceles trapezoid.

[0037] In this embodiment, the sliding between the sliding sleeve 8 and the sliding rod 11 allows the main ejector plate 5 to slide vertically and smoothly up and down.

[0038] In summary, by pulling the lever 303, the slider 306 and the positioning rod 307 slide and compress the positioning spring 304 inside the positioning groove 308 until they are completely disengaged from the inside of the sliding groove 301. Then, the sliding plate 302 at the secondary ejection plate 4 slides and locks into the inside of the sliding groove 301. Then, the lever 303 is released, and the elastic force of the positioning spring 304 is used to make the slider 306 and the positioning rod 307 slide and lock into the inside of the positioning hole 305. This achieves the limiting and fixing of the sliding plate 302 after sliding and locking into the inside of the sliding groove 301. In this way, the splicing and assembly between the secondary ejection plate 4 and the main ejection plate 5 or between the secondary ejection plates 4 can be realized, so that it can meet the processing of the leg tips of the pipette body 2 with different numbers of tips. At the same time, loosen the fixing bolt 602 with a screwdriver or other tools until it is completely disengaged from the bolt hole 604. Then, pull down the main ejector plate 5 so that the mounting block 603 is completely disengaged from the mounting groove 601. This allows the main ejector plate 5 to be disassembled from the fixing plate 12. During installation, engage the mounting block 603 with the mounting groove 601 and then screw the fixing bolt 602 into the bolt hole 604 to securely install the main ejector plate 5. This allows the main ejector plate 5 to be disassembled for maintenance or installed on different brackets 1. Then the cylinder 7 can be started, and by using the sliding between the sliding sleeve 8 and the sliding rod 11, the main retraction plate 5 can be smoothly slid down to perform the gun head retraction operation.

[0039] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0040] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An enzyme immunoassay pipette head elastic clamping retreat plate structure, characterized in that, include: Support (1); A pipette body (2) is symmetrically fixedly connected to both sides of the bottom end of the bracket (1). A cylinder (7) is fixedly connected to the bracket (1). The output end of the cylinder (7) passes through the bracket (1) and is fixedly connected to a fixing plate (12). A fixing seat (9) is provided at the bottom end of the fixing plate (12). A main ejector plate (5) is fixedly connected to the bottom end of the fixing seat (9). A mounting assembly (6) is assembled between the fixed base (9) and the fixed plate (12), the mounting assembly (6) being used to enable the assembly and disassembly of the fixed base (9) and the fixed plate (12); Fixed springs (13) are symmetrically fixedly connected to both sides of the top of the main ejector plate (5). The top of the fixed springs (13) is fixedly connected to the bottom of the bracket (1). A secondary ejector plate (4) is provided at one end of the main ejector plate (5). Ejection grooves (10) are provided on both sides of the secondary ejector plate (4) and the main ejector plate (5). A positioning component (3) is assembled between the sub-retractor plate (4) and the main retractor plate (5), the positioning component (3) being used to realize the assembly between the sub-retractor plate (4) and the main retractor plate (5).

2. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 1, wherein, The positioning component (3) includes; A sliding groove (301) is formed on one side of the sub-retracting plate (4) and the main retracting plate (5). A positioning groove (308) is formed inside the sub-retracting plate (4) and the main retracting plate (5) on the inner top wall of the sliding groove (301). A slider (306) is movably connected inside the positioning groove (308). A positioning rod (307) extending into the sliding groove (301) is fixedly connected to the bottom end of the slider (306). A pull rod (303) extending into the outside of the positioning groove (308) is fixedly connected to the top end of the slider (306). A positioning spring (304) is wound around the surface of the pull rod (303), and the two ends of the positioning spring (304) are fixedly connected to the top of the slider (306) and the inner top wall of the positioning groove (308), respectively. A sliding plate (302) is fixedly connected to the other side of the auxiliary retractor plate (4) and the main retractor plate (5), and a positioning hole (305) is provided at one end of the top of the sliding plate (302).

3. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 2, wherein, The sliding plate (302) and the interior of the sliding groove (301) form a sliding engagement structure, and the sliding groove (301) and the sliding plate (302) are inverted convex in shape.

4. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 2, wherein, The slider (306) and the positioning groove (308) form a sliding structure, and the slider (306) and the positioning groove (308) are cross-shaped.

5. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 2, wherein, The bottom end of the positioning rod (307) and the interior of the positioning hole (305) form a locking structure. The depth inside the positioning hole (305) is less than the distance between the top of the slider (306) and the inner top wall of the positioning groove (308).

6. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 1, wherein, The installation component (6) includes: Mounting slots (601) are equally spaced on the top of the fixed base (9), and fixing bolts (602) extending into the mounting slots (601) are movably connected equally spaced on the front of the fixed base (9). The mounting block (603) is fixedly connected to the bottom end of the fixed plate (12) at equal intervals, and a bolt hole (604) is formed in the front face of the mounting block (603) and is threadedly matched with one end of the fixing bolt (602).

7. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 6, wherein, The mounting block (603) and the inside of the mounting groove (601) form a clamping structure, and the mounting groove (601) and the mounting block (603) are in the shape of an I-beam.

8. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 1, wherein, The two sides of the top end of the main retreat plate (5) are fixedly connected with sliding rods (11), and the two sides of the bottom end of the support (1) are fixedly connected with sliding sleeves (8).

9. The enzyme immunoassay pipette head flexible clamp-off retraction structure of claim 8, wherein, The sliding rod (11) and the inner wall of the sliding sleeve (8) form a sliding structure, and the inner wall of the sliding sleeve (8) and the sliding rod (11) are in the shape of an isosceles trapezoid.

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