Elastic pressing block of liquid cover glass

Abstract

The utility model relates to an elastic pressing block of a liquid cover glass, the elastic pressing block comprises a pressing block mounting seat, pressing blocks, pins and torsion springs, the pressing block mounting seat is provided with pressing block grooves, the number of the pressing block grooves is consistent with that of the pressing blocks, one end of each pressing block is fixed in the corresponding pressing block groove through the corresponding pin and the corresponding torsion spring, the other end of each pressing block is used for downwards pressing a cover plate, and limiting blocks are arranged in the pressing block grooves. One side of the pressing block abuts against the limiting block, the other side of the pressing block abuts against the torsion spring, the limiting block limits the inclination angle of the pressing block, and the inclination angle meets the requirement that the face, facing the cover plate, of the pressing block is parallel to the inclined face of the tail of the cover plate during waste liquid discharging return stroke. The utility model solves the problem that the existing elastic pressing block structure is easy to cause the cover plate to bounce.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of spare and accessory of full-automatic immunohistochemistry device, and particularly relates to an elastic pressing block of liquid cover glass. BACKGROUND

[0002] Full-automatic immunohistochemistry device will adopt a kind of technology called "liquid cover glass". This process does not need traditional glass cover but uses plastic glass slide cover plate (liquid cover glass), and the cover plate can form a cavity, cover on specimen, create similar to actual cover glass effect.

[0003] In the immunohistochemistry experiment using full-automatic immunohistochemistry device, a kind of elastic pressing block is needed to press the cover plate, so that the cavity between the cover plate and the glass slide below forms airtight reaction, and incubates sample, when waste liquid is discharged, pull the cover plate and lift a certain angle ( ∠ β), and discharge the liquid in the cavity. The tail of the cover plate is usually provided as an inclined slope (inclination angle ∠ α), so that the elastic pressing block can slide to the upper side of the cover plate during the return stroke of waste liquid discharge. However, in actual operation, the cover plate is prone to pop up.

[0004] Chinese patent CN212134283 discloses an automatic dyeing driving device for cooperating with the glass slide cover plate disclosed in patent 201711340983.3, and proposes an elastic pressing block structure. When the cover plate is pulled open and the waste discharge is completed, during the process of returning the cover plate to the flat state, the pressing block top touches the inclined slope of the tail of the cover plate. At this time, the lever phenomenon is easy to occur, which causes the cover plate to pop up, and further causes the phenomenon of mechanical jamming error. UTILITY MODEL CONTENT

[0005] (I) Technical problem to be solved

[0006] The utility model provides an elastic pressing block of liquid cover glass, which aims to solve the problem that the existing elastic pressing block structure is prone to cause the cover plate to pop up.

[0007] (II) Technical scheme

[0008] The utility model provides an elastic pressing block of liquid cover glass, which is composed of a pressing block mounting seat, a pressing block, a pin and a torsion spring. A number of pressing block grooves consistent with the number of pressing blocks are formed in the pressing block mounting seat. One end of the pressing block is fixed in the pressing block groove through the pin and the torsion spring. The other end of the pressing block is used to press the cover plate. A limiting block is arranged in the pressing block groove. One side of the pressing block touches the limiting block, and the other side touches the torsion spring. The limiting block limits the inclination angle of the pressing block, which satisfies that the surface of the pressing block facing the cover plate is parallel to the inclined surface of the tail of the cover plate during the return stroke of waste liquid discharge.

[0009] Further, the end of the pressing block is a smooth arc surface.

[0010] Further, the arc height of the arc surface is 0.5-1.5mm.

[0011] Further, a chute is arranged on the inner side of the pressing block.

[0012] Further, the pressing block is provided as two blocks, the pressing block close to the head of the cover plate is a first pressing block, and the pressing block close to the tail of the cover plate is a second pressing block; the limiting block comprises a first limiting block and a second limiting block, the first limiting block is used for limiting the inclination angle of the first pressing block, and the second limiting block is used for limiting the inclination angle of the second pressing block.

[0013] (Three) beneficial effects

[0014] The utility model discloses a special elastic pressing block structure, limit the inclination angle of pressing block to meet when the return of waste liquid, the face of pressing block towards cover plate is parallel with the inclined plane of cover plate tail. When the return of waste liquid, the face of the side of pressing block towards cover plate is parallel with the inclined plane, at this time, pressing block only contacts the inclined plane, does not provide the pressure, until the end arc surface R of pressing block contacts inflection point A, at this time, pressing block provides the force of cover plate pressure only, and the contact point A of this time is located the left side of fulcrum O, and the support force F that U-shaped groove provides to cover plate 5 in gravity direction is located the same side, thereby avoiding the occurrence of lever phenomenon, effectively avoids the cover plate bounce, guarantees the smooth progress of experiment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the perspective view of elastic pressing block;

[0016] Figure 2 It is the schematic view of pressing block structure in pressing block mounting seat;

[0017] Figure 3 It is the schematic view of pressing block structure;

[0018] Figure 4 It is the initial state diagram of cover plate pressure by pressing block;

[0019] Figure 5 It is the state diagram of cover plate pressure by pressing block when the return of liquid;

[0020] Figure 6 It is Figure 5 It is the enlarged view of I in the middle;

[0021] Figure 7 It is the principle diagram of force analysis of cover plate;

[0022] Mark in the diagram:

[0023] 1, the block mounting seat, 11, the first limit block, 12, the second limit block, 13, the block slot, 2, the block, 21, the first block, 22, the second block, 23, the sliding slot, 3, the pin, 4, the torsion spring, 5, the cover plate, 51, the inclined surface, 6, the glass slide. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the utility model, the utility model will be further described below in combination with embodiments and drawings. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limit the utility model.

[0025] As shown in the figure, Figures 1-6 The utility model provides a kind of elastic block of liquid cover glass, and elastic block is composed of block mounting seat 1, block 2, pin 3 and torsion spring 4, block mounting seat 1 is equipped with the block slot 13 of consistent quantity with block 2, and one end of block 2 and torsion spring 4 are respectively connected in block slot 13 by pin 3 shaft, limit block is arranged in block slot 13, one side of block 2 touches limit block, and the other side touches torsion spring 4, and limit block limits the inclination angle of block 2, and the inclination angle meets when returning, the face of block 2 towards cover plate 5 is parallel to the inclined surface 51 (inclined surface of cover plate 5 both sides tail) of cover plate 5 tail portion in waste liquid.

[0026] Specifically, as shown in the figure, Figure 1 Two block slots 13 are equipped in block mounting seat 1, and each block slot 13 corresponds two pins 3, a block 2 and a torsion spring 4, one pin shaft connects block 2, and the other pin shaft connects torsion spring 4. As shown in the figure, Figure 3 The inner side of block 2 is provided with sliding slot 23, and one straight rod of torsion spring 4 is clamped in sliding slot 23, and the other straight rod of torsion spring 4 touches the inner wall of block mounting seat 1;Limit block is arranged at the bottom of block slot 13, and limit block touches the side of block 2 away from torsion spring 4, and limit block and torsion spring 4 jointly limit the rotation range of block 2.

[0027] As shown in the figure, Figures 1-2 The block 2 of each elastic block is provided with two blocks, and the block close to the head of cover plate 5 is the first block 21, and the block close to the tail of cover plate is the second block 22, as shown in the figure, Figure 2 Limit block includes first limit block 11 and second limit block 12, and first limit block 11 is used to limit the inclination angle of first block 21, and second limit block 12 is used to limit the inclination angle of second block 22, and the inclination angle of both is consistent, to provide stable pressure.

[0028] In full-automatic device for tissue section repair and dyeing, as shown in the figure, Figure 4 Usually two elastic blocks are a group, for pressing the two sides of a cover plate 5. And the head of cover plate 5 (locatedFigures 4-5 The left side of the direction) is clamped in the U-shaped groove of the push-pull plate, and a supporting force F is provided to the cover plate 5 in the direction of gravity, so that the lifting, pulling and falling operations can be performed, but since the upper end of the U-shaped groove is open, the head of the cover plate 5 is not limited to be popped up from the upper end opening. The inclination angle of the pressing block 2 in the application satisfies that when the waste liquid is returned (at this time, the cover plate 5 is in the lifted state), the face of the pressing block 2 towards the cover plate 5 is parallel to the inclined surface 51 of the tail of the cover plate 5. As shown in Figure 6 At this time, the angle γ of the pressing block 2 relative to the slide glass is the sum of the angle α of the inclined surface 51 and the angle β of the cover plate 5 being lifted when the waste liquid is discharged. That is, γ = α + β. As shown in Figures 5-6 When the cover plate 5 is pushed back to discharge the liquid, the face of the pressing block 2 towards the side of the cover plate 5 is in a parallel state with the inclined surface 51, at this time, the pressing block 2 only contacts the inclined surface 51, but does not provide a downward pressure, until the end arc R of the pressing block 2 contacts the inflection point A of the upper surface of the cover plate 5 and the inclined surface 51, at this time, the pressing block 2 provides a downward pressure to the cover plate 5, and the contact point A at this time is located on the left side of the fulcrum O (in the direction of the head of the cover plate), which is the point of contact between the cover plate 5 and the slide glass when the cover plate 5 is lifted. As shown in Figure 7 As shown in the force analysis, the head of the cover plate 5 is clamped in the U-shaped groove of the push-pull plate, the upper end of the U-shaped groove is open, the U-shaped groove provides an upward supporting force F to the cover plate 5 in the direction of gravity, the pressing block 2 provides a downward pressure at the inflection point A of the inclined surface 51, and the supporting force F and the pressure at A are located on the same side of the fulcrum O, thereby avoiding the lever phenomenon, and the cover plate 5 will not pop up. In the existing pressing block structure, during the waste discharge return process, the point of providing the downward pressure is located on the right side of the fulcrum O by first touching the inclined surface, according to the lever principle, the head of the cover plate 5 in the U-shaped groove will be pried up, and the phenomenon of the cover plate 5 popping up will occur.

[0029] As shown in Figure 2 and 6 The end of the pressing block 2 is a smooth arc R. The arc height H of the arc R determines the amount of downward pressure of the pressing block 2, and the downward pressure is preferably 0.5-1.5 mm. Within this range, the elastic force provided by the torsion spring 4 is moderate, and if it is greater than 1.5 mm, the stroke height of the torsion spring 4 will be affected, so as to avoid rigid connection and damage to the cover plate 5.

[0030] After repeated operations for many times (>100 times), the phenomenon of the cover plate 5 popping up of the elastic pressing block of the liquid cover glass in this embodiment is 0 times, which completely solves the phenomenon of the cover plate 5 popping up, guarantees the smooth progress of the experiment, and ensures the accuracy of the experimental results.

[0031] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made according to the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A resilient pressing block of a liquid cover glass, comprising a pressing block mounting base (1), a pressing block (2), a pin (3) and a torsion spring (4), the pressing block mounting base (1) is provided with pressing block grooves (13) in number corresponding to the pressing block (2), one end of the pressing block (2) is fixed in the pressing block groove (13) through the pin (3) and the torsion spring (4), and the other end of the pressing block (2) is used for pressing a cover plate (5), characterized in that, a limiting block is arranged in the pressing block groove (13), one side of the pressing block (2) abuts against the limiting block, and the other side of the pressing block (2) abuts against the torsion spring (4), the limiting block limits the inclination angle of the pressing block (2), and the inclination angle satisfies that the surface of the pressing block (2) facing the cover plate (5) is parallel to the inclined surface (51) of the tail of the cover plate (5) when the waste liquid is returned. The end of the pressing block (2) is a smooth arc surface (R).

2. A resilient gasket for a liquid coverslip according to claim 1, wherein, The arc height (H) of the arc surface (R) is 0.5-1.5 mm.

3. An elastomeric compression of a coverslip according to claim 2, wherein, A sliding groove (23) is arranged on the inner side of the pressing block (2).

4. The elastomeric compression of a liquid coverslip of claim 1, wherein, The pressing block (2) is provided in two pieces, the pressing block close to the head of the cover plate (5) is a first pressing block (21), and the pressing block close to the tail of the cover plate (5) is a second pressing block (22); the limiting block comprises a first limiting block (11) and a second limiting block (12), the first limiting block (11) is used for limiting the inclination angle of the first pressing block (21), and the second limiting block (12) is used for limiting the inclination angle of the second pressing block (22).

5. The elastomeric compression of a liquid coverslip of claim 1, wherein, ​

Images