Cover glass holder

Abstract

The invention relates to the technical field of microscope cover glass, in particular to a cover glass clamping device which comprises an L-shaped inner clamping jaw and an L-shaped outer clamping jaw, the inner clamping jaw is arranged on the inner side of the outer clamping jaw in an overlapped mode, each of the inner clamping jaw and the outer clamping jaw comprises a clamping head and a handle which are perpendicularly connected, and the tail end of the handle of the inner clamping jaw is fixedly connected with the tail end of the handle of the outer clamping jaw. A clamping space is formed between a clamping head of the inner clamping jaw and a clamping head of the outer clamping jaw, a handle of the inner clamping jaw comprises a fixed handle and a movable handle, and a spring is connected between the fixed handle and the movable handle. According to the invention, the problem that samples on the cover glass are easy to scatter when the cover glass is clamped on or out of the heating plate in the prior art can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of microscope cover glasses, and in particular to a cover glass holder. Background Art

[0002] When testing the melting point of textile fibers, drug powders and other substances, the chopped textile fibers (about 2mm to 5mm in length) and drug powders need to be placed between two cover glasses (specifications 18mm*18mm) and then the cover glasses are placed horizontally on the Figure 1 The sample is tested on the heating plate 11 of the melting point apparatus 1 shown, and then observed under a microscope.

[0003] The tweezers or clamps in the prior art clamp objects by opening and closing two clamp arms as a whole, and can clamp objects from the left and right direction or the up and down direction of the object. The left and right clamping method is limited to objects with a certain thickness. For objects with a smaller thickness such as cover glass, the upper and lower surfaces of the cover glass can only be clamped from the up and down direction. However, since the heating plate 11 of the melting point apparatus 1 is surrounded by an annular heating protection cover 12, there is a certain distance between the top of the heating protection cover 12 and the surface of the heating plate 11. When the tweezers and clamps in the prior art are used to clamp the cover glass onto the heating plate 11 or clamp it out of the heating plate 11, due to the limitation of the heating protection cover 12, the clamps and tweezers need to be tilted at an angle of 40° to 70° to clamp the cover glass. However, excessive tilting of the cover glass will cause the test sample in the middle to fall on the heating plate 11 along the tilting direction, contaminating the heating plate 11, resulting in the loss of part of the sample. Therefore, it is necessary to study a clamp that does not spill the test sample when clamping the cover glass with the test sample, and does not cause the contamination of the heating plate 11 and the loss of part of the sample. Summary of the invention

[0004] The present invention is intended to provide a cover glass holder to solve the problem in the prior art that when the cover glass is clamped onto a heating plate or taken out of the heating plate, the sample on the cover glass is easily spilled.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A coverslip clamp comprises an L-shaped inner clamp and an L-shaped outer clamp, wherein the inner clamp is overlapped and arranged on the inner side of the outer clamp, and both the inner clamp and the outer clamp comprise a chuck and a handle connected vertically, the tail end of the handle of the inner clamp is fixedly connected to the tail end of the handle of the outer clamp, a clamping space is formed between the chuck of the inner clamp and the chuck of the outer clamp, the handle of the inner clamp comprises a fixed handle and a movable handle, and a spring is connected between the fixed handle and the movable handle.

[0007] Preferably, as an improvement, the length of the clamping head of the inner clamping jaw is smaller than the length of the clamping head of the outer clamping jaw.

[0008] Preferably, as an improvement, the length difference between the chuck of the inner jaw and the chuck of the outer jaw is 2-5 mm.

[0009] Preferably, as an improvement, the bottom surface of the outer jaw chuck is an inclined surface, and the thickness of the free end of the outer jaw chuck is smaller than the thickness of the other end thereof.

[0010] Preferably, as an improvement, the thickness of the free end of the outer jaw chuck is 0.3 mm.

[0011] Preferably, as an improvement, the spacing between the connection points of the inner clamping jaw and the outer clamping jaw is 1-3 mm.

[0012] Preferably, as an improvement, the spring outer sleeve is provided with a corrugated sleeve, and two ends of the corrugated sleeve are respectively fixed on the fixed handle and the movable handle.

[0013] Preferably, as an improvement, an anti-slip groove is provided on the movable handle.

[0014] Preferably, as an improvement, there are two chucks on the outer jaw and the two chucks are slidably connected to the handle of the outer jaw, a slider is slidably connected to the handle of the outer jaw, the slider is connected to a connecting rod, the connecting rod is slidably connected in the handle of the outer jaw, a double-bevel wedge is fixed to the bottom end of the connecting rod, the two chucks are connected to a wedge rod capable of cooperating with the bevel of the double-bevel wedge, the wedge rod is connected to a reset spring, a driving rod for driving the slider to slide on the handle of the outer jaw is connected to the handle of the inner jaw, a clamping position mark is provided on the handle of the outer jaw, a clamping position mark is provided above the clamping position mark, and when the slider slides to the clamping position mark, the distance between the two chucks is greater than the width of the coverslip.

[0015] The principles and beneficial effects of this scheme are:

[0016] 1. A clamp structure with overlapping L-shaped outer and inner jaws is used. The two clamps are overlapped up and down, and the clamping direction is up and down, which is convenient for clamping the cover glass into or out of the heating plate. Specifically, when clamping, the clamp is tilted, the inner jaw is lifted, and the clamp of the outer jaw is slowly pushed forward to a certain position at the bottom of the cover glass, and then the inner jaw is released. After the inner jaw is reset, the cover glass is clamped from the top and bottom directions. During the clamping process, the cover glass only needs to be slightly lifted to a small angle (less than 10 degrees) to clamp. The difference from the clamps in the prior art is that the L-shaped clamp avoids contact with the heating protective cover around the heating plate, so the cover glass can be taken out vertically from the heating plate after clamping, and the cover glass does not need to be clamped out by tilting the entire process due to the influence of the heating protective cover, and the tilting angle is very small, so it can greatly reduce or even avoid the spilling of samples on the cover glass. In summary, the two clamps of the clamp in this solution are overlapped up and down, and the clamping direction is up and down, which can keep the original direction of the object unchanged to the greatest extent, and minimize or even avoid the spillage and loss of the sample in the middle of the cover glass.

[0017] 2. The length of the chuck of the outer jaw is greater than that of the chuck of the inner jaw, and the contact surface between the chuck of the outer jaw and the cover glass is a plane and the bottom surface is an inclined surface, so that the thickness of the free end is smaller, and it can penetrate more smoothly from the bottom of the cover glass, especially when the thickness is 0.3mm, and the inclination angle of the cover glass can be controlled within a range of less than 10 degrees, thereby avoiding the sample on the cover glass from spilling to the greatest extent. When the length difference between the head of the outer jaw and the chuck of the inner jaw is 2-5mm, the chuck of the outer jaw can be smoothly extended to the bottom of the cover glass, and sufficient support can be provided to ensure the clamping stability of the cover glass. If the length difference is less than 2mm, it is inconvenient to extend the chuck of the outer jaw into the bottom of the cover glass. If the length difference is greater than 5mm, the length of the chuck of the inner jaw is too small when the length of the chuck of the outer jaw remains unchanged, and the clamping stability of the cover glass is insufficient.

[0018] 3. The fixed handle and movable handle of the inner clamp are connected by a spring, so that the handle of the inner clamp can be adjusted in height, which is suitable for clamping objects of different thicknesses. The corrugated sleeve on the outer spring can effectively protect the spring, prevent the spring from being affected by impurities and water vapor, and effectively extend the service life of the spring.

[0019] 4. This solution clamps the cover glass in the up and down directions by the inner and outer jaws, and further clamps the cover glass by pinching the inner and outer jaws. The clamping effect is good by combining the two clamping methods. The spacing between the connection of the inner and outer jaws is 1-3mm, which is convenient for pinching the inner and outer jaws. If the spacing is too large, it is inconvenient to pinch. At the same time, when pinching, the inner jaw moves a large distance on the cover glass, which is easy to wear the cover glass.

[0020] 5. The movable handle of the inner jaw is equipped with an anti-slip groove, which can effectively prevent slipping, increase the friction coefficient, and facilitate the adjustment of the distance between the inner jaw chuck and the outer jaw chuck.

[0021] 6. Furthermore, this solution improves the chuck of the outer jaw into two sliding chucks. When clamping, the free end of the outer jaw chuck is inserted under the cover glass, and the movable handle is lifted. When the movable handle drives the slider to move up to the clamping position mark through the driving rod, the two chucks are separated by a certain distance under the action of the double-bevel wedge block but are still located under the cover glass. The cover glass can be clamped after continuing to push the clamp until it is inserted into the appropriate position and releasing the movable handle. When removing the clamp, lift the movable handle to make the slider slide to the upper clamping position mark. At this time, the two chucks slide out horizontally from both sides of the cover glass, and the clamp can be removed from the bottom of the cover glass. When removing the clamp in this way, there is no need to tilt and lift the cover glass, which further avoids the sample on the cover glass from spilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a melting point apparatus in the prior art.

[0023] Figure 2 This is a schematic diagram of the structure of Example 1 of the present invention.

[0024] Figure 3 It is a side view of embodiment 2 of the present invention.

[0025] Figure 4 It is a partial cross-sectional view of Example 2 of the present invention. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The figure marks in the drawings of the specification include: melting point apparatus 1, heating plate 11, heating protection cover 12, inner jaw 2, outer jaw 3, handle 4, fixed handle 41, spring 42, movable handle 43, anti-slip groove 44, chuck 5, wedge rod 51, clamping position mark 6, clamping piece position mark 61, slider 7, connecting rod 71, double-bevel wedge block 72, and driving rod 8.

[0028] Embodiment 1:

[0029] like Figure 2As shown, a cover glass holder includes an L-shaped inner jaw 2 and an L-shaped outer jaw 3, the inner jaw 2 overlaps the inner side of the outer jaw 3, the inner jaw 2 and the outer jaw 3 both include a chuck 5 and a handle 4 connected vertically, the chuck 5 and the handle 4 are integrally formed, the tail end of the handle 4 of the inner jaw 2 and the tail end of the handle 4 of the outer jaw 3 are fixedly connected, and the spacing between the connection parts is 1-3mm, preferably 2mm in this embodiment, and a clamping space is formed between the chuck 5 of the inner jaw 2 and the chuck 5 of the outer jaw 3. The handle 4 of the inner jaw 2 includes a fixed handle 41 and a movable handle 43, a spring 42 is connected between the fixed handle 41 and the movable handle 43, and an anti-slip groove 44 is engraved on the movable handle 43.

[0030] The length of the chuck 5 of the inner jaw 2 is less than that of the chuck 5 of the outer jaw 3. Specifically, the length difference between the chuck 5 of the inner jaw 2 and the chuck 5 of the outer jaw 3 is 2-5 mm, and preferably 3 mm in this embodiment. The side (top surface) of the chuck 5 of the outer jaw 3 in contact with the cover glass is a flat surface, and the bottom surface is an inclined surface, so that the thickness of the free end of the chuck 5 of the outer jaw 3 is less than the thickness of the other end thereof. Specifically, the thickness of the free end of the chuck 5 of the outer jaw 3 is 0.3 mm.

[0031] A method for using a cover glass holder:

[0032] 1. Place the sample to be tested between two cover slips, that is, prepare the cover slip with sample and place it horizontally on the operating table.

[0033] 2. Use the thumb, index finger, middle finger, and ring finger to hold the inner jaw 2 and outer jaw 3 of the clamp respectively, tilt the clamp forward, and slowly move forward toward the bottom of the cover glass. The clamp head 5 of the outer jaw 3 first extends into the bottom of the cover glass. The index finger and middle finger slide the inner jaw 2 upward to lift the movable handle 43. The spring 42 is compressed to facilitate the clamp head 5 of the outer jaw 3 to extend into the bottom of the cover glass. When the edge of the cover glass is against the handle 4 of the outer jaw 3, slowly release the movable handle 43 to reset the clamp head 5 of the inner jaw 2 to the top of the cover glass, ensuring that the clamp firmly clamps the cover glass up and down without breaking it.

[0034] 3. Squeeze the handles 4 of the inner clamp 2 and the outer clamp 3 to ensure that the cover glass does not fall off, and then move the cover glass with the sample horizontally.

[0035] 4. After the cover glass is moved horizontally onto the heating plate 11, the movable handle 43 is lifted again to move the clamping head 5 of the inner clamping jaw 2 away from the top of the cover glass, and then the outer clamping jaw 3 is slowly and horizontally withdrawn from the bottom of the cover glass.

[0036] Embodiment 2:

[0037] Combination Figure 3 and Figure 4As shown, the difference between this embodiment and the embodiment 1 is that there are two chucks 5 of the outer clamp 3, and a dovetail groove (not shown in the figure) is opened on the bottom side of the handle 4 of the outer clamp 3. The two chucks 5 are slidably connected in the dovetail groove. A sliding groove is vertically opened on the handle 4 of the outer clamp 3, and a slider 7 is slidably connected in the sliding groove. The slider 7 is screwed with a connecting rod 71, and the connecting rod 71 is slidably connected in the handle 4 of the outer clamp 3. The bottom end of the connecting rod 71 is screwed with a double-bevel wedge 72, and the two chucks 5 are connected with a wedge rod 51 that can cooperate with the inclined surface of the double-bevel wedge 72. A reset spring (not shown in the figure) is connected between the wedge rod 51 and the dovetail groove to ensure that the wedge surface of the wedge rod 51 always abuts against the inclined surface of the double-bevel wedge 72. The handle 4 of the clamp 2 is connected with a driving rod 8 for driving the slider 7 to slide on the handle 4 of the outer clamp 3. The handle 4 of the outer clamping jaw 3 is marked with a clamping position mark 61 , and a clamping removal position mark 6 is marked above the clamping position mark 61 . When the slider 7 slides to the clamping removal position mark 6 , the distance between the two clamps 5 is greater than the width of the cover glass.

[0038] When clamping the cover glass, the head of the clamp 5 of the outer clamp 3 first extends into the bottom of the cover glass, and then the movable handle 43 is lifted, and the movable handle 43 drives the slider 7 to move upward through the driving rod 8, and the spring 42 is compressed until the slider 7 moves to the clamping position mark 61. At this time, the clamps 5 of the two outer clamps 3 move outward for a certain distance at the same time under the action of the double-bevel wedge 72 on the connecting rod 71, but are still located at the bottom of the cover glass, and this state is maintained to continue to extend the clamper into the bottom of the cover glass until the side of the cover glass abuts against the handle 4 of the outer clamp 3. Slowly release the movable handle 43, the spring 42 is reset, and at the same time, the clamps 5 of the two outer clamps 3 move inward at the same time under the action of the double-bevel wedge 72 to reset, and the clamp 5 of the inner clamp 2 slowly moves down to press the top surface of the cover glass, thereby clamping the cover glass from the top and bottom directions, and then pinch the outer clamp 3 and the inner clamp 2 to lock the clamping state.

[0039] Place the coverslip horizontally on the heating plate 11, lift the movable handle 43 to move the slider 7 up to the clamping position mark 6, and the chuck 5 of the inner jaw 2 moves away from the coverslip. At this time, the chucks 5 of the two outer jaws 3 slide out horizontally from both sides of the coverslip, thereby removing the chucks 5 of the outer jaws 3 from the bottom of the coverslip. Compared with removing from one side of the coverslip, this method of removing the clamp will not cause the coverslip to tilt, and can further prevent the sample in the middle of the coverslip from spilling. It should be noted that when the slider 7 moves to the clamping position mark 6, the double-bevel wedge 72 and the wedge rod 51 do not disengage and can be smoothly reset.

[0040] Embodiment 3:

[0041] The difference between this embodiment and embodiment 1 is that the spring 42 is covered with a corrugated sleeve, and the two ends of the corrugated sleeve are respectively glued and fixed to the fixed handle 41 and the movable handle 43. The use of the corrugated sleeve can protect the spring 42 to prevent it from being contaminated by impurities, dust and water vapor, and can effectively extend the service life of the spring 42.

[0042] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A cover glass holder, characterized in that: It includes an L-shaped inner jaw and an L-shaped outer jaw, the inner jaw is overlapped and arranged on the inner side of the outer jaw, and both the inner jaw and the outer jaw include a vertically connected clamping head and a handle, the tail end of the handle of the inner jaw is fixedly connected to the tail end of the handle of the outer jaw, a clamping space is formed between the clamping head of the inner jaw and the clamping head of the outer jaw, the handle of the inner jaw includes a fixed handle and a movable handle, and a spring is connected between the fixed handle and the movable handle.

2. A cover glass holder according to claim 1, characterized in that: The length of the clamping head of the inner clamping jaw is shorter than the length of the clamping head of the outer clamping jaw.

3. A cover glass holder according to claim 2, characterized in that: The difference in length between the inner jaw chuck and the outer jaw chuck is 2-5 mm.

4. A cover glass holder according to claim 3, characterized in that: The bottom surface of the outer clamping jaw chuck is an inclined surface, and the thickness of the free end of the outer clamping jaw chuck is smaller than the thickness of the other end thereof.

5. A cover glass holder according to claim 4, characterized in that: The thickness of the free end of the outer jaw chuck is 0.3 mm.

6. A cover glass holder according to claim 5, characterized in that: The distance between the connection of the inner jaw and the outer jaw is 1-3 mm.

7. A cover glass holder according to claim 6, characterized in that: The spring outer sleeve is provided with a corrugated sleeve, and two ends of the corrugated sleeve are respectively fixed on the fixed handle and the movable handle.

8. A cover glass holder according to claim 7, characterized in that: The movable handle is provided with an anti-slip groove.

9. A cover glass holder according to claim 2, characterized in that: There are two chucks on the outer jaw, and the two chucks are slidably connected to the handle of the outer jaw, and a slider is slidably connected to the handle of the outer jaw, and the slider is connected to a connecting rod, and the connecting rod is slidably connected in the handle of the outer jaw, and a double-bevel wedge is fixed to the bottom end of the connecting rod, and the two chucks are connected to a wedge rod that can cooperate with the bevel of the double-bevel wedge, and the wedge rod is connected to a reset spring, and a driving rod for driving the slider to slide on the handle of the outer jaw is connected to the handle of the inner jaw, and a clamping position mark is provided on the handle of the outer jaw, and a clamping position mark is provided above the clamping position mark, and when the slider slides to the clamping position mark, the distance between the two chucks is greater than the width of the coverslip.

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