Automatic positioning mechanism of sample placing rack

Abstract

The utility model discloses an automatic positioning mechanism of a sample placing rack, which comprises a placing rack, the placing rack comprises a bottom plate and pull rods fixed at four corners of the bottom plate, and a lifting handle is arranged between the pull rods at two ends of the bottom plate; a rectangular guide frame is hinged between the two pull rods on the two sides of the bottom plate, and the upper end of the guide frame is inclined outwards so that the upper end of the guide frame on the two sides of the bottom plate is inclined outwards to guide the test tube rack; the bottom plate is fixedly connected with a limiting block, and the limiting block is located on the outer side of the guide frame so as to limit the edge of the guide frame. The turnover guide frames are arranged on the two sides of the placement frame, the upper ends of the guide frames are turned over outwards in a natural state, test tube racks placed in the placement frame are guided and positioned, and the test tube racks can be conveniently placed in the placement frame.

Description

Technical Field

[0001] The utility model relates to the technical field of detection sample placement devices, in particular to an automatic positioning mechanism of a sample placement rack. Background Art

[0002] In the field of medical diagnosis, more and more testing projects require automated analysis of biological samples such as patients' blood and body fluids. After the biological samples are collected, they are placed in test tubes, which are placed in test tube racks. During testing, the test tube racks need to be placed with the test tubes in the sample rack, and the racks are placed in the testing instrument for automatic sample extraction and testing.

[0003] When the test tube rack is placed in the rack, the internal space of the rack is consistent with the external dimensions of the rack, which makes it difficult to align the rack and put it in. It takes a long time to align the rack before the rack can be put into the rack, which leads to low placement efficiency and troubles. Therefore, the existing rack is improved and an automatic positioning mechanism of the sample rack is proposed. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provide an automatic positioning mechanism for a sample placement rack to guide and position the test tube rack, so as to facilitate placing the test tube rack into the placement rack.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic positioning mechanism for a sample placement rack comprises a placement rack, wherein the placement rack comprises a base plate and pull rods fixed at four corners of the base plate, wherein a lifting handle is arranged between the pull rods at both ends of the base plate; a rectangular guide frame is hingedly connected between two pull rods on both sides of the base plate, wherein the upper ends of the guide frames are tilted outwardly so that the upper ends of the guide frames on both sides of the base plate are tilted outwardly to guide the test tube rack; a limiting block is fixedly connected to the base plate, wherein the limiting block is located outside the guide frame to limit the edge of the guide frame.

[0007] Furthermore, rotating pins are fixedly connected to both sides of the guide frame, a first hinge hole is provided on the pull rod, and the rotating pin is inserted into the first hinge hole to form an articulated fit with the pull rod.

[0008] Furthermore, a torsion spring is sleeved on the rotating pin, one end of the torsion spring is fixed on the pull rod, and the other end of the torsion spring is fixed on the guide frame. The torsion spring is used to provide elastic force so that the upper end of the guide frame flips and tilts outward in a natural state.

[0009] Furthermore, a first limit pin is fixedly connected to both sides of the guide frame, and a first limit groove is opened on the side wall of the pull rod. The first limit groove is an arc shape with the center of the rotating pin as the center of the circle, and the first limit pin is inserted in the first limit groove. When the first limit pin moves to one end of the first limit groove, the first limit groove blocks and limits the first limit pin.

[0010] Furthermore, the lifting handle includes a connecting rod connected to the pull rod and a handle rod fixed between the connecting rods, the outer side of the connecting rod is fixedly connected with a hinge shaft, the pull rod is provided with a second hinge hole, the hinge shaft is inserted in the second hinge hole to form a hinged connection with the pull rod; a second limit pin is fixedly connected to the side wall of the connecting rod, and a second limit groove is provided on the side wall of the pull rod, the second limit groove is an arc shape with the center of the hinge shaft as the center, the second limit pin is inserted in the second limit groove, and the second limit groove blocks and limits the second limit pin.

[0011] Furthermore, a limit rod is provided between the pull rods and below the lifting handle, and the limit rod is cylindrical.

[0012] Furthermore, a long groove is provided on the bottom plate.

[0013] The utility model provides an automatic positioning mechanism for a sample rack, which has the following beneficial effects: by arranging a reversible guide frame on both sides of the rack, the upper end of the guide frame is turned outward in a natural state, and the upper end opening is enlarged to guide the test tube rack, so that it is convenient for a rectangular test tube rack to be placed in the rack. When the test tube rack is placed from the top of the rack to the rack, the guide frame is squeezed and turned to a vertical state, and the test tube rack placed in the rack is guided and positioned, so that the test tube rack is accurately placed in the rack. The automatic positioning mechanism can guide and position the test tube rack, making it convenient to place the test tube rack in the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a guide frame in a vertical state in an automatic positioning mechanism of a sample placement rack provided by the utility model;

[0016] Figure 2 A schematic diagram of a cross-sectional structure of a guide frame in a vertical state in an automatic positioning mechanism of a sample placement rack provided by the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the local structure of part A in the middle;

[0018] Figure 4A schematic diagram of the lateral structure of a guide frame flipped outward in an automatic positioning mechanism of a sample placement rack provided by the utility model;

[0019] Figure 5 for Figure 4 A schematic diagram of the partial perspective structure of the middle B part;

[0020] Figure 6 for Figure 4 Schematic diagram of the local structure of the middle C part;

[0021] Figure 7 A schematic diagram of the front cross-sectional structure of an automatic positioning mechanism of a sample placement rack provided by the utility model;

[0022] Figure 8 for Figure 7 Schematic diagram of partial perspective structure of D part in the middle;

[0023] Fig. 9 A schematic diagram of an automatic positioning mechanism of a sample placement rack provided by the utility model when placing a test tube rack Figure 1 ;

[0024] Fig.10 A schematic diagram of an automatic positioning mechanism of a sample placement rack provided by the utility model when placing a test tube rack Figure 2 .

[0025] Explanation of the numbers in the figure: 1. Base plate; 2. Pull rod; 21. First hinge hole; 22. First limit groove; 23. Second hinge hole; 24. Second limit groove; 3. Lifting handle; 31. Connecting rod; 32. Handle rod; 33. Hinge shaft; 34. Second limit pin; 4. Guide frame; 41. Rotating pin; 42. Torsion spring; 43. First limit pin; 5. Limit block; 6. Limit rod; 9. Test tube rack. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0029] like Figure 1-Figure 10 As shown, an automatic positioning mechanism of a sample placement rack comprises a placement rack, wherein the placement rack comprises a base plate 1 and pull rods 2 fixed at the four corners of the base plate 1, and a lifting handle 3 is provided between the pull rods 2 at both ends of the base plate 1; a rectangular guide frame 4 is hingedly connected between the two pull rods 2 on both sides of the base plate 1, and the upper ends of the guide frames 4 are inclined outwardly so that the upper ends of the guide frames 4 on both sides of the base plate 1 are inclined outwardly to guide the test tube rack 9; a limiting block 5 is fixedly connected to the base plate 1, and the limiting block 5 is located on the outside of the guide frame 4 to limit the edge of the guide frame 4.

[0030] The above technical solution is adopted, by arranging a reversible guide frame 4 on both sides of the placement rack, the upper end of the guide frame 4 is turned outward in a natural state, and the upper end opening is enlarged to guide the test tube rack 9, so that the rectangular test tube rack 9 is conveniently placed in the placement rack. When the test tube rack 9 is placed from the top of the placement rack to the placement rack, the guide frame 4 is squeezed and turned into a vertical state, and the test tube rack 9 placed in the placement rack is guided and positioned, so that the test tube rack 9 is accurately placed in the placement rack. The placement test tube rack 9 can be guided and positioned by the automatic positioning mechanism, which is convenient for placing the test tube rack 9 in the placement rack.

[0031] Specifically, the two sides of the guide frame 4 are fixedly connected with rotation pins 41, and the pull rod 2 is provided with a first hinge hole 21, and the rotation pin 41 is inserted into the first hinge hole 21 to form an articulated fit with the pull rod 2. The guide frame 4 can be rotated by articulating with the rotation pin 41.

[0032] Specifically, a torsion spring 42 is sleeved on the rotating pin 41, one end of the torsion spring 42 is fixed on the pull rod 2, and the other end of the torsion spring 42 is fixed on the guide frame 4. The torsion spring 42 is used to provide elastic force to make the upper end of the guide frame 4 flip outward and tilt in a natural state. Through the torsion elastic force of the torsion spring 42, the guide frame 4 flips, and the upper end of the guide frame 4 tilts outward, forming a guiding inclined surface structure with an upper end opening larger than a lower end opening, guiding the placed test tube rack 9 to facilitate the placement of the test tube rack 9 in the placement rack; and in the process of placing the test tube rack 9 from top to bottom, the guide frame 4 is squeezed and driven to rotate so that the guide frame 4 is in a vertical state. When the guide frame 4 rotates, it pushes the test tube rack 9 sideways, so that the side of the test tube rack 9 is aligned with the edge of the internal space of the placement rack, thereby achieving the guidance and positioning of the placed test tube rack 9, and improving the convenience of placement.

[0033] Specifically, the first limiting pins 43 are fixedly connected to both sides of the guide frame 4, and the first limiting groove 22 is provided on the side wall of the pull rod 2. The first limiting groove 22 is an arc shape with the center of the rotating pin 41 as the center of the circle. The first limiting pin 43 is inserted into the first limiting groove 22 and when the first limiting pin 43 moves to one end of the first limiting groove 22, the first limiting groove 22 blocks and limits the first limiting pin 43. The first limiting pin 43 cooperates with the first limiting groove 22 to limit the guide frame 4, so that the guide frame 4 is turned outward to maintain a set angle, and the guide frame 4 does not turn outward at too large an angle to affect the placement of the test tube rack 9.

[0034] Specifically, the lifting handle 3 includes a connecting rod 31 connected to the pull rod 2 and a handle rod 32 fixed between the connecting rods 31, the outer side of the connecting rod 31 is fixedly connected with a hinge shaft 33, the pull rod 2 is provided with a second hinge hole 23, the hinge shaft 33 is inserted in the second hinge hole 23 to form a hinged connection with the pull rod 2; a second limit pin 34 is fixedly connected to the side wall of the connecting rod 31, and a second limit groove 24 is provided on the side wall of the pull rod 2, the second limit groove 24 is an arc shape with the center of the hinge shaft 33 as the center, the second limit pin 34 is inserted in the second limit groove 24, and the second limit groove 24 blocks and limits the second limit pin 34. The lifting handle 3 is hingedly connected to the pull rod 2. When the test tube rack 9 is placed, the lifting handle 3 is flipped outward to avoid obstruction to the placement of the test tube rack 9. After the test tube rack 9 is placed, the placement rack is picked up by grabbing the lifting handle 3 so that the placement rack can be lifted and placed in the detection instrument.

[0035] Specifically, a limit rod 6 is provided between the pull rods 2 and below the lifting handle 3, and the limit rod 6 is cylindrical. The limit rod 6 is used to limit the positions of both ends of the test tube rack 9 placed in the placement rack. A long groove is provided on the bottom plate 1, thereby reducing the overall weight.

[0036] The parts not involved in this technical solution can be implemented by using existing technologies.

[0037] The above shows and describes the basic principle, main features and characteristics of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model includes the attached claims and their equivalents.

Claims

1. An automatic positioning mechanism for a sample placement rack, characterized in that: The rack comprises a placing rack, the placing rack comprising a bottom plate (1) and pull rods (2) fixed at four corners of the bottom plate (1), a lifting handle (3) being arranged between the pull rods (2) at both ends of the bottom plate (1); a rectangular guide frame (4) being hingedly connected between two pull rods (2) on both sides of the bottom plate (1), the upper ends of the guide frames (4) being inclined outwards so that the upper ends of the guide frames (4) on both sides of the bottom plate (1) are inclined outwards to guide the test tube rack (9); a limiting block (5) is fixedly connected to the bottom plate (1), the limiting block (5) being located outside the guide frame (4) to limit the edge of the guide frame (4).

2. The automatic positioning mechanism of a sample placement rack according to claim 1, characterized in that: The two sides of the guide frame (4) are fixedly connected with rotating pins (41), the pull rod (2) is provided with a first hinge hole (21), and the rotating pin (41) is inserted into the first hinge hole (21) to form an articulated fit with the pull rod (2).

3. The automatic positioning mechanism of a sample placement rack according to claim 2, characterized in that: A torsion spring (42) is sleeved on the rotating pin (41), one end of the torsion spring (42) is fixed on the pull rod (2), and the other end of the torsion spring (42) is fixed on the guide frame (4). The torsion spring (42) is used to provide elastic force so that the upper end of the guide frame (4) flips outward and tilts in a natural state.

4. The automatic positioning mechanism of the sample placement rack according to claim 3, characterized in that: The first limit pins (43) are fixedly connected to both sides of the guide frame (4), and the first limit groove (22) is opened on the side wall of the pull rod (2). The first limit groove (22) is an arc shape with the center of the rotating pin (41) as the center of the circle. The first limit pin (43) is inserted into the first limit groove (22) and when the first limit pin (43) moves to one end of the first limit groove (22), the first limit groove (22) blocks and limits the first limit pin (43).

5. The automatic positioning mechanism of a sample placement rack according to claim 1, characterized in that: The lifting handle (3) comprises a connecting rod (31) connected to the pull rod (2) and a handle rod (32) fixed between the connecting rods (31); a hinge shaft (33) is fixedly connected to the outer side of the connecting rod (31); a second hinge hole (23) is provided on the pull rod (2); the hinge shaft (33) is inserted into the second hinge hole (23) to form a hinge connection with the pull rod (2); a second limit pin (34) is fixedly connected to the side wall of the connecting rod (31); a second limit groove (24) is provided on the side wall of the pull rod (2); the second limit groove (24) is an arc shape with the center of the hinge shaft (33) as the center; the second limit pin (34) is inserted into the second limit groove (24); the second limit groove (24) blocks and limits the second limit pin (34).

6. The automatic positioning mechanism of a sample placement rack according to claim 1, characterized in that: A limit rod (6) is provided between the pull rods (2) and below the lifting handle (3), and the limit rod (6) is cylindrical.

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