Carrying table structure of liquid chromatograph

Abstract

The utility model discloses a platform deck structure of a liquid chromatograph, which comprises a fixedly arranged base and a drawing combination body movably matched on the base, the drawing combination body comprises a sliding table and a drawer, two sides of the upper surface of the sliding table are provided with positioning edges, the inner end of the drawer is provided with a positioning block, and the inner side wall of the outer end of the drawer is provided with a metal elastic sheet. The curved elastic sheet is matched in the first elastic sheet guide groove, the metal elastic sheet is U-shaped, two ends of the metal elastic sheet are matched in the second elastic sheet guide groove, in the accommodating cavity, the end part of the metal elastic sheet is connected with the inner end of the curved elastic sheet, and the outer end of the curved elastic sheet protrudes out of the first elastic sheet guide groove and is bent downwards. The jig is clamped between the metal elastic piece and the positioning block, the metal elastic piece drives the curved elastic piece, the outer end of the curved elastic piece abuts against the top face of the jig, and the jig is pressed downwards. In this way, the jig is stably positioned on the drawer and the sliding table.

Description

Technical Field

[0001] The utility model relates to the technical field of biochemistry, in particular to a liquid chromatograph. Background Art

[0002] The liquid chromatograph is provided with a sample carrier, a test tube containing a sample is inserted on a fixture, and the fixture is positioned on the carrier.

[0003] The patent document with authorization announcement number CN214041279U discloses a carrier structure of a liquid chromatograph, including a fixed base, a pull-out assembly movably fitted on the base, a locking mechanism being provided at the outer end of the pull-out assembly, the locking mechanism including a button hinged at the top of the pull-out assembly, a limit block arranged at the bottom of the pull-out assembly, and a connecting rod connecting the button and the limit block; the outer end of the base is provided with a limit edge that can be abutted against the limit block.

[0004] According to the above patent document, the operator pulls out the pull-out assembly, positions the jig carrying the test tube on the pull-out assembly, pushes the pull-out assembly to reset, the limit edge abuts against the limit block, and the pull-out assembly is positioned on the base. When taking out the jig, the button is pressed, the state where the limit block abuts against the limit edge is released, and the operator can pull out the pull-out assembly and take away the jig.

[0005] In the above-mentioned carrier structure, the outer end of the drawer is convex, and a metal spring is provided on the inner side wall of the outer end of the drawer, and the metal spring is arranged opposite to the positioning block. The square jig is stuck between the metal spring and the positioning block, and the jig can be positioned on the drawer and the slide with the above-mentioned positioning edge and positioning block. However, the jig cannot be stabilized on the drawer and the slide, because the metal spring and the positioning block are arranged front and back, and the positioning edge is arranged left and right. The metal spring, the positioning block and the positioning edge can only be positioned in the left and right front and back directions, and cannot position the jig up and down. Utility Model Content

[0006] The technical problem solved by the utility model is to enable the carrier structure of a liquid chromatograph to position the fixture up and down.

[0007] To solve the above technical problems, the utility model provides the following technical solutions: a carrier structure of a liquid chromatograph, comprising a fixed base, a pull-out assembly movably matched on the base, the pull-out assembly comprising a slide and a drawer, positioning edges are provided on both sides of the upper surface of the slide, a positioning block is provided at the inner end of the drawer, a metal spring is provided on the inner side wall of the outer end of the drawer, the metal spring and the positioning block are arranged opposite to each other, the outer end of the drawer is convex, a accommodating cavity is provided at the outer end of the drawer, a first spring guide groove and a second spring guide groove are provided on the inner side wall of the outer end of the drawer, the first spring guide groove and the second spring guide groove are connected to the accommodating cavity, the curved spring fits in the first spring guide groove, the metal spring is U-shaped, and the two ends of the metal spring fit in the second spring guide groove, in the accommodating cavity, the end of the metal spring is connected to the inner end of the curved spring, and the outer end of the curved spring protrudes from the first spring guide groove and bends downward.

[0008] According to the above technical solution, the square jig is stuck between the metal spring and the positioning block, and with the positioning edge, the jig can be positioned front, back, left, and right. The front side of the jig squeezes the metal spring, and the two ends of the metal spring go deep into the second spring guide groove, driving the curved spring, the middle of the curved spring abuts against the side wall of the accommodating cavity, and the outer end of the curved spring extends outward along the first spring guide groove. Since the outer end of the curved spring is bent downward, the outer end of the extended curved spring presses downward on the top surface of the jig, pressing the jig down. In this way, the jig is positioned front, back, left, right, up, and down, and is stably positioned on the drawer and the slide.

[0009] The number of the first spring sheet guide grooves is one pair, the number of the second spring sheet guide grooves is one pair, a pair of curved spring sheets are respectively matched in the pair of first spring sheet guide grooves, and the two ends of the metal spring sheet are respectively in the pair of second spring sheet guide grooves. As an option, the two ends of the metal spring sheet are provided with bayonet holes, and the inner end of the curved spring sheet is bayoneted in the bayonet holes.

[0010] The outer end of the pull-out assembly is provided with a locking mechanism, which includes a button hinged on the top of the pull-out assembly, a limit block arranged at the bottom of the pull-out assembly, and a connecting rod connecting the button and the limit block; the outer end of the base is provided with a limit edge that can abut against the limit block. The operator pulls out the pull-out assembly, positions the jig carrying the test tube on the pull-out assembly, pushes the pull-out assembly to reset, the limit edge abuts against the limit block, and the pull-out assembly is positioned on the base. When taking out the jig, the operator presses the button, the limit block is lifted, the state where the limit block abuts against the limit edge is released, and the operator can pull out the pull-out assembly and take away the jig. The locking mechanism is arranged at the outer end of the pull-out assembly, and is the handheld end when the operator pulls out the pull-out assembly, so that it is convenient for the operator to take and put the jig.

[0011] The base is provided with a first slide groove, and the bottom of the slide is provided with a first slider matched with the first slide groove; second sliders are provided on both sides of the drawer, and a drawer groove is provided on the upper surface of the slide, and second slide grooves are provided on both sides of the drawer groove, and the second slider is matched in the second slide groove. Through the first slide groove and the first slider, the slide can be pulled along the base; through the second slide groove and the second slider, the drawer can be pulled along the slide. The combination of the slide and the drawer is conducive to the miniaturization design of the liquid chromatograph carrier, and further to the miniaturization of the liquid chromatograph.

[0012] A limiting piece is provided in the second slide groove, and a limiting recess that can cooperate with the limiting piece is provided on the second slide; when the limiting piece cooperates with the limiting recess, the positioning block is located on the inner side of the positioning edge. Pull the drawer outward, and the drawer moves relative to the slide. When the limiting piece cooperates with the limiting recess, the displacement of the drawer relative to the slide stops, and the drawer drives the slide to be pulled out. Since the positioning block is located on the inner side of the positioning edge, when the jig is placed on the drawer and the slide, it can be positioned by the positioning edges on both sides of the slide and the positioning block of the drawer. Among them, the square jig is provided with a plurality of sockets for inserting test tubes. The upper surface of the drawer is flush with the upper surface of the slide, which is convenient for the placement of the jig. The horizontal placement of the jig enables the sampling needle to be inserted straight down into the test tube.

[0013] The outer end of the base is provided with a guide groove, and the bottom of the drawer is provided with a guide piece that can cooperate with the guide groove. When the drawer and the slide are pushed into the base, that is, during the resetting process, the guide piece of the drawer is matched into the guide groove to guide the resetting of the drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings:

[0015] Figure 1 A schematic diagram showing a top view of a stage structure of a liquid chromatograph;

[0016] Figure 2 for Figure 1 A schematic diagram of the middle drawer 20;

[0017] Figure 3 for Figure 2 Bottom view of

[0018] Figure 4 for Figure 3 A schematic diagram of the middle drawer 20 after positioning the jig 50;

[0019] Figure 5 for Figure 3 Bottom view of

[0020] Figure 6 is a schematic diagram of the base 10;

[0021] Figure 7 is a schematic diagram of the slide 30;

[0022] Figure 8 for Fig. 9 Right view of;

[0023] Fig. 9 Schematic diagram of the combined structure of the curved spring piece 40 and the metal spring piece 27;

[0024] Fig.10 for Fig. 9 Left view of

[0025] Fig.11 for Fig. 9 A top view of

[0026] Fig.12 for Fig. 9 Bottom view of .

[0027] Explanation of symbols in the figure:

[0028] 10. Base; 11. Limiting edge; 12. First slide groove; 13. Guide groove;

[0029] 20. Drawer; 201. Outer end of drawer; 202. Accommodating cavity; 203. First spring sheet guide groove; 21. Button; 210. Hinge pin; 22. Limit block; 220. Base block; 221. Elastic metal sheet; 23. Connecting rod; 24. Second slider; 25. Positioning block; 26. Limiting depression; 27. Metal spring sheet; 270. Bayonet; 28. Guide piece;

[0030] 30. Slide table; 31. First slide block; 32. Drawer slot; 33. Second slide slot; 34. Positioning edge; 35. Limiting piece;

[0031] 40. a curved spring piece; 41. an outer end of the curved spring piece;

[0032] 50. Jig. DETAILED DESCRIPTION

[0033] Combination Figures 1 to 3 as well as Figure 5 , Figure 6 The carrier structure of the liquid chromatograph includes a fixed base 10, a pull-out assembly movably matched on the base, a locking mechanism is provided at the outer end of the pull-out assembly, and the locking mechanism includes a button 21 hinged at the top of the pull-out assembly, a limit block 22 arranged at the bottom of the pull-out assembly, and a connecting rod 23 connecting the button and the limit block; the outer end of the base is provided with a limit edge 11 that can abut against the limit block.

[0034] like Figure 3The limit block 22 is arranged on the base block 220 and is triangular in shape. Moreover, the base block is installed at the bottom of the outer end of the drawer assembly through an elastic metal sheet 221. In this way, when the drawer assembly is pushed into the base to reset, the limit block can pass over the limit edge 11 and then abut against the inner side of the limit edge. The button 21 is installed at the outer end of the drawer assembly through a hinge pin 210. When the operator presses the outer end of the button 21, the inner end of the button rises, pulling the connecting rod 23 up, and the connecting rod pulls the base block 220 up, thereby the limit block rises, and the limit block is separated from the limit edge.

[0035] Combination Figure 2 , Figure 7 The drawer assembly includes a slide 30 and a drawer 20. A first slide groove 12 is provided on the base 10. A first slider 31 matching the first slide groove is provided at the bottom of the slide. Second sliders 24 are provided on both sides of the drawer. A drawer groove 32 is provided on the upper surface of the slide. Second slide grooves 33 are provided on both sides of the drawer groove. The second slider matches the second slide groove. The slide can be pulled along the base through the first slide groove and the first slider. The drawer can be pulled along the slide through the second slide groove and the second slider. The combination of the slide and the drawer is conducive to the miniaturization design of the liquid chromatograph carrier, and further to the miniaturization of the liquid chromatograph.

[0036] The locking mechanism is specifically installed at the outer end of the drawer 20 .

[0037] Positioning edges 34 are provided on both sides of the upper surface of the slide 30, a positioning block 25 is provided at the inner end of the drawer 20, a limiting piece 35 is provided in the second slide groove 33, and a limiting recess 26 that can cooperate with the limiting piece is provided on the second slide block 24; when the limiting piece cooperates with the limiting recess, the positioning block is located on the inner side of the positioning edge. When the drawer is pulled outward, the drawer moves relative to the slide. When the limiting piece cooperates with the limiting recess, the displacement of the drawer relative to the slide stops, and the drawer drives the slide to be pulled out. Since the positioning block is located on the inner side of the positioning edge, when the jig is placed on the drawer and the slide, it can be positioned by the positioning edges on both sides of the slide and the positioning blocks of the drawer. At least, three sides of the square jig are positioned, which is beneficial for the rapid positioning of the jig. Among them, the square jig is provided with a plurality of sockets for inserting test tubes. The upper surface of the drawer is flush with the upper surface of the slide, which is convenient for the placement of the jig.

[0038] Combination Figure 2 , Figure 3 The outer end 201 of the drawer is convex, and a metal spring 27 is provided on the inner side wall of the outer end of the drawer, and the metal spring is arranged opposite to the positioning block 25. The square fixture is stuck between the metal spring and the positioning block, and cooperates with the above-mentioned positioning edge 34 and the positioning block 25, so that the fixture can be stably positioned on the drawer and the slide.

[0039] like Figure 6The outer end of the base 10 is provided with a guide groove 13, and the bottom of the drawer 20 is provided with a guide member 28 that can cooperate with the guide groove. When the drawer and the slide are pushed into the base, that is, during the reset process, the guide member 28 of the drawer is matched into the guide groove 13 to guide the reset of the drawer.

[0040] Combination Figure 3 , Figure 4 A receiving cavity 202 is provided in the outer end 201 of the drawer, and a first spring guide groove 203 and a second spring guide groove are provided on the inner side wall of the outer end of the drawer. The first spring guide groove and the second spring guide groove are connected with the receiving cavity. The curved spring 40 is fitted in the first spring guide groove. The metal spring is U-shaped. Both ends of the metal spring are fitted in the second spring guide groove. In the receiving cavity, the end of the metal spring is connected to the inner end of the curved spring, and the outer end of the curved spring protrudes from the first spring guide groove and bends downward.

[0041] The square jig 50 is stuck between the metal spring 27 and the positioning block 25, and cooperates with the positioning edge 34, so that the jig 50 can be positioned front, back, left, and right. The front side of the jig squeezes the metal spring 27, and the two ends of the metal spring go deep into the second spring guide groove, driving the curved spring 40, the middle of the curved spring abuts against the side wall of the accommodating cavity 202, and the outer end of the curved spring 40 extends outward along the first spring guide groove 203. Since the outer end of the curved spring 40 is bent downward, the outer end 41 of the extended curved spring presses downward on the top surface of the jig 50, pressing the jig down. In this way, the jig is positioned front, back, left, right, up, and down, and is stably positioned on the drawer 20 and the slide 30.

[0042] refer to Figures 8 to 12 The number of the first spring sheet guide grooves 203 is a pair, the number of the second spring sheet guide grooves is a pair, a pair of curved spring sheets 40 are respectively matched in a pair of first spring sheet guide grooves, and the two ends of the metal spring sheet 27 are respectively in a pair of second spring sheet guide grooves; the two ends of the metal spring sheet are provided with bayonet sockets 270, and the inner end of the curved spring sheet is clamped in the bayonet sockets.

[0043] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A stage structure of a liquid chromatograph, comprising a fixed base (10), a drawer assembly movably matched on the base, the drawer assembly comprising a slide (30) and a drawer (20), positioning edges (34) are provided on both sides of the upper surface of the slide (30), a positioning block (25) is provided at the inner end of the drawer (20), a metal spring (27) is provided on the inner side wall of the outer end of the drawer, the metal spring and the positioning block (25) are arranged opposite to each other, and the characteristics are as follows: The outer end (201) of the drawer is convex, and a receiving cavity (202) is provided in the outer end of the drawer. A first spring guide groove (203) and a second spring guide groove are provided on the inner side wall of the outer end of the drawer. The first spring guide groove and the second spring guide groove are connected to the receiving cavity. The curved spring (40) is fitted in the first spring guide groove. The metal spring is U-shaped, and both ends of the metal spring are fitted in the second spring guide groove. In the receiving cavity, the end of the metal spring is connected to the inner end of the curved spring, and the outer end of the curved spring protrudes from the first spring guide groove and bends downward.

2. The stage structure of the liquid chromatograph according to claim 1, characterized in that: The number of the first spring sheet guide grooves (203) is a pair, the number of the second spring sheet guide grooves is a pair, a pair of curved spring sheets (40) are respectively matched in the pair of first spring sheet guide grooves, and the two ends of the metal spring sheet (27) are respectively in the pair of second spring sheet guide grooves; the two ends of the metal spring sheet are provided with bayonet holes (270), and the inner end of the curved spring sheet is bayoneted in the bayonet holes.

3. The stage structure of the liquid chromatograph according to claim 1, characterized in that: A locking mechanism is provided at the outer end of the drawer assembly, the locking mechanism comprising a button (21) hinged on the top of the drawer assembly, a limit block (22) arranged at the bottom of the drawer assembly, and a connecting rod (23) connecting the button and the limit block; and a limit edge (11) capable of abutting against the limit block is provided at the outer end of the base.

4. The stage structure of the liquid chromatograph according to claim 1, characterized in that: A first slide groove (12) is provided on the base (10), and a first slider (31) matched with the first slide groove is provided at the bottom of the slide; second sliders (24) are provided on both sides of the drawer, a drawer groove (32) is provided on the upper surface of the slide, and second slide grooves (33) are provided on both sides of the drawer groove, and the second slider is matched in the second slide groove.

5. The stage structure of the liquid chromatograph according to claim 4, characterized in that: A limiting piece (35) is arranged in the second sliding groove (33), and a limiting recess (26) capable of cooperating with the limiting piece is provided on the second sliding block (24); when the limiting piece cooperates with the limiting recess, the positioning block is located on the inner side of the positioning edge.

6. The stage structure of the liquid chromatograph according to claim 1, characterized in that: A guide groove (13) is provided at the outer end of the base (10), and a guide member (28) capable of cooperating with the guide groove is provided at the bottom of the drawer (20).

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