A mechanical reagent kit grabbing structure

Abstract

The present invention discloses a mechanical reagent kit grasping structure, which belongs to the field of manipulator technology. It comprises a tray for placing the reagent kit, wherein a left flap and a right flap are hingedly connected at both sides of the lower side of the tray, and a torsion spring for pushing the left flap and the right flap to rotate is connected between the left flap, the right flap and the tray; a spring for pulling the left flap and the right flap to rotate is also connected between the left flap, the right flap and the tray, and the spring and the torsion spring control the left flap and the right flap in opposite directions; a push rod connected to the spring is slidingly provided on the lower side of the tray. The present invention adopts a purely mechanical structure, and the flap can be controlled to open when the push rod is pushed, and the elastic force of the torsion spring is used to control the flap to clamp when the push rod is released; the overall structure is compact, occupies little space, saves a series of electrical components such as stepper motors and optical couplers, and reduces costs.

Description

Technical Field

[0001] The present invention relates to the technical field of manipulators, in particular to a mechanical reagent box grabbing structure. Background Art

[0002] Common kit structures such as Figure 1 As shown, there are two ways to place the test kit: one is the most primitive, where the test kit is placed manually at the specified position, and the robot in the device drives the test kit to the specified position for sample aspiration; the other is to use a grabbing structure (similar to the function of a human hand), for example Figure 2 The electric gripping structure shown utilizes a motor with a gear. When the gear rotates, it drives the sliders on both sides to move to achieve the clamping and loosening (reagent box) functions. The position is controlled by an optical coupler, and the stepping motor is controlled by a control circuit to realize the action.

[0003] The above technology has the following disadvantages:

[0004] Manual placement of test kits is too inefficient because only one or two can be placed at a time;

[0005] The electric gripping structure is highly efficient and can automatically grasp multi-position test kits. However, the electric structure is too large, requiring motors, gears, optocouplers, and control circuits and other related functions. The cost is too high and it cannot achieve small-space operation functions. Summary of the Invention

[0006] The object of the present invention is to provide a mechanical reagent box grabbing structure to solve some or all of the deficiencies of the prior art.

[0007] The present invention adopts the following technical solution: a mechanical reagent box grasping structure, including a tray for placing the reagent box, a left flip claw and a right flip claw are hinged on both sides of the lower side of the tray, and a torsion spring for pushing the left flip claw and the right flip claw to rotate is connected between the left flip claw, the right flip claw and the tray; a spring piece for pulling the left flip claw and the right flip claw to rotate is also connected between the left flip claw, the right flip claw and the tray, and the spring piece and the torsion spring control the left flip claw and the right flip claw in opposite directions; a push rod connected to the spring piece is slidably provided on the lower side of the tray.

[0008] Preferably, the right claw and the left claw are symmetrical in structure;

[0009] The middle part of the right flip claw is hinged on the support through a rotating shaft, and the support is fixed on the lower side of the tray; the torsion spring is installed on the rotating shaft, and the two ends of the torsion spring are respectively connected to the right flip claw and the tray; the upper part of the right flip claw is a clamping part, the clamping part extends beyond the upper side of the tray, and a limiting groove is provided on the side of the tray to cooperate with the clamping part; the spring piece is connected to the lower part of the right flip claw.

[0010] Preferably: there are two spring pieces, which are arranged in parallel; one end of the front spring piece is hinged to the lower end of the right flip claw, and the other end of the front spring piece is hinged to the support under the left flip claw; one end of the rear spring piece is hinged to the lower end of the left flip claw, and the other end of the rear spring piece is hinged to the support under the right flip claw.

[0011] Preferably, a support plate is fixed to one end of the lower side of the tray, and the end of the push rod away from the spring is slidably mounted on the support plate, and the end of the push rod away from the spring has a spherical head.

[0012] Preferably, the four corners of the tray are provided with avoidance notches corresponding to the four corners of the reagent box.

[0013] Preferably, a positioning column cooperating with the reagent kit is fixed on the upper side of the tray.

[0014] The beneficial effects of the present invention are: it adopts a purely mechanical structure, and the flap can be controlled to open when the push rod is pushed. When the push rod is released, the elastic force of the torsion spring is used to control the flap to clamp; the overall structure is compact, occupies little space, saves a series of electrical components such as stepper motors and optocouplers, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the structure of the existing test kit.

[0017] Figure 2 Schematic diagram of the structure of the electric grabbing structure of the existing test kit.

[0018] Figure 3 This is a three-dimensional diagram of a mechanical reagent kit grabbing structure of the present invention.

[0019] Figure 4 This is a three-dimensional diagram of the reagent box in the open state of the present invention.

[0020] Figure 5 This is a front view of the present invention in which the reagent box is opened.

[0021] Figure 6 It is a bottom view of the reagent box in the open state of the present invention.

[0022] Figure 7 It is a three-dimensional diagram of the clamping reagent box of the present invention.

[0023] Figure 8 This is a front view of the clamping reagent kit state of the present invention.

[0024] Figure 9 It is a bottom view of the clamping reagent box of the present invention.

[0025] Explanation of the accompanying reference numerals: 1. Tray; 101. Limiting groove; 2. Left flip claw; 3. Right flip claw; 301. Clamping part; 4. Torsion spring; 5. Shrapnel; 6. Push rod; 7. Rotating shaft; 8. Support; 9. Support plate; 10. Positioning column; 11. Reagent box. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] Combine Figure 3 The figure shows a mechanical reagent cartridge gripping structure comprising a tray 1 for placing a reagent cartridge 11. Positioning posts 10 are fixed to the front and rear sides of the tray 1, which engage with positioning holes in the bottom of the reagent cartridge 11. Tray 1 has four corners with clearance notches corresponding to the corners of the reagent cartridge 11, allowing support devices to support the corners of the reagent cartridge 11 when the tray 1 is lowered away from the reagent cartridge 11.

[0028] Recombination Figures 7 to 9 As shown, a left flap 2 and a right flap 3 are hingedly connected to either side of the tray 1. The right flap 3 and the left flap 2 are symmetrically mounted. Taking the right flap 3 as an example, the middle portion of the right flap 3 is hinged to a support 8 via a pivot 7, which is fixed to the bottom of the tray 1. A torsion spring 4 is mounted on the pivot 7, with its ends connected to the right flap 3 and the tray 1, respectively. The upper portion of the right flap 3 comprises a clamping portion 301, which extends beyond the upper side of the tray 1. A retaining groove 101 is provided on the side of the tray 1 for engagement with the clamping portion 301. The torsion spring 4 provides a rotational force to the left and right flaps 2 and 3, forcing the upper clamping portions of the left and right flaps 2 and 3 into contact with the retaining groove 101 on the side of the tray 1. In this state, the left and right flaps 2 and 3 are in a clamping position, capable of gripping the gripping grooves on either side of the reagent reagent 11, thereby securing the reagent reagent 11 on the tray 1.

[0029] Recombination Figures 4 to 6As shown, two spring clips 5 are arranged in parallel in the front and back. One end of the front spring clip 5 is hinged to the lower end of the right flap 3, and the other end is hinged to the support 8 under the left flap 2. One end of the rear spring clip 5 is hinged to the lower end of the left flap 2, and the other end is hinged to the support 8 under the right flap 3. A support plate 9 is fixed to the front end of the lower side of the tray 1. The inner end of the push rod 6 is fixedly connected to the middle part of the front and rear spring clips 5 respectively. The outer end of the push rod 6 is slidably mounted on the support plate 9. The outer end of the push rod 6 has a spherical head. When the push rod 6 pushes the spring clip 5 to deform and bend, one end of the spring clip 5 will pull the corresponding left flap 2 and right flap 3 to rotate, so that the clamping part on the upper part of the left flap 2 and right flap 3 disengages from the limit groove 101 of the tray 1. At this time, the left flap 2 and right flap 3 are in a released state, and the reagent kit 11 can be detached from the tray 1.

[0030] Working principle:

[0031] When the tray 1 moves to a certain position (generally designed as 4 parallel positions) under the reagent kit 11, the push rod 6 is compressed backward (a blocking structure is pre-designed at the predetermined position), thereby pushing the two thin spring sheets 5 at the back to deform backward, as shown in FIG. Figure 6 As shown, the front spring piece 5 pulls the right flip claw 3 to rotate, and the rear spring piece 5 pulls the left flip claw 2 to rotate, and the left flip claw 2 and the right flip claw 3 are opened at the same time, and the tray 1 begins to rise. When the two positioning posts 10 are inserted into the two positioning holes at the bottom of the reagent box 11, the spherical head at the front end of the push rod 6 enters the groove (a groove structure is pre-designed at the predetermined position), and the thrust is released. Figure 9 As shown, the spring 5 also returns to being straight. At this time, the left flip claw 2 and the right flip claw 3 grab (hook) the lower part of the reagent box under the action of their own torsion spring 4. Figure 7 shown.

[0032] When the device has finished aspirating the sample, the reagent kit 11 is returned to its original position and another reagent kit 11 is picked up. The returning process is exactly the opposite of the picking process.

[0033] The tray 1 with the reagent kit 11 first arrives just above the storage space and slowly falls. When the four corners of the reagent kit 11 are about to touch its supporting surface, the push rod 6 enters an inclined surface (a inclined surface structure is pre-designed at a predetermined position), and the spherical head at the front end of the push rod 6 is pushed backward, causing the spring 5 to deform, as shown in FIG. Figure 4 and Figure 5 As shown, the left and right flaps 2 and 3 on both sides open and continue to move downward, and the reagent reagent 11 is placed steadily on the support surface. At this time, the tray 1 is quickly withdrawn from the bottom of the reagent reagent 11 by a safe distance, and the thrust of the push rod 6 is released again. The left and right flaps 2 and 3 are reset under the action of their own torsion springs 4, and another reagent reagent reagent can be grabbed.

[0034] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mechanical reagent kit gripping structure, comprising a tray (1) for placing a reagent kit (11), characterized in that: The left flip claw (2) and the right flip claw (3) are hinged on both sides of the lower side of the tray (1), and a torsion spring (4) is connected between the left flip claw (2), the right flip claw (3) and the tray (1) for pushing the left flip claw (2), the right flip claw (3) to rotate; a spring piece (5) is also connected between the left flip claw (2), the right flip claw (3) and the tray (1) for pulling the left flip claw (2), the right flip claw (3) to rotate, and the spring piece (5) and the torsion spring (4) control the left flip claw (2), the right flip claw (3) in opposite directions; a push rod (6) connected to the spring piece (5) is slidably provided on the lower side of the tray (1); The right flip claw (3) and the left flip claw (2) are structurally symmetrical; The middle part of the right flip claw (3) is hinged on the support (8) through the rotating shaft (7), and the support (8) is fixed on the lower side of the tray (1); the torsion spring (4) is installed on the rotating shaft (7), and the two ends of the torsion spring (4) are respectively connected to the right flip claw (3) and the tray (1); the upper part of the right flip claw (3) is a clamping part (301), and the clamping part (301) exceeds the upper side of the tray (1), and a limiting groove (101) is provided on the side of the tray (1) to cooperate with the clamping part (301). 1); the spring piece (5) is connected to the lower part of the right flip claw (3); two spring pieces (5) are provided, and the two spring pieces (5) are arranged in parallel; one end of the front spring piece (5) is hinged to the lower end of the right flip claw (3), and the other end of the front spring piece (5) is hinged to the support (8) under the left flip claw (2); one end of the rear spring piece (5) is hinged to the lower end of the left flip claw (2), and the other end of the rear spring piece (5) is hinged to the support (8) under the right flip claw (3); A positioning column (10) that cooperates with the reagent box (11) is fixed on the upper side of the tray (1).

2. The mechanical reagent kit grabbing structure according to claim 1, characterized in that: A support plate (9) is fixed to one end of the lower side of the tray (1), and an end of the push rod (6) away from the spring (5) is slidably mounted on the support plate (9), and the end of the push rod (6) away from the spring (5) has a spherical head.

3. The mechanical reagent kit grabbing structure according to claim 1, characterized in that: The four corners of the tray (1) are provided with avoidance notches corresponding to the four corners of the reagent box (11).

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