Sample wafer clamp for transmission electron microscope

Abstract

The utility model provides a sample clamp for a transmission electron microscope, which comprises a main body seat and a sample body, a first adjusting ring and a second adjusting ring are arranged between the main body seat, and the first adjusting ring and the second adjusting ring are connected with each other; mounting grooves are formed in the two ends of the main body seat, bearings are arranged in the mounting grooves, connecting columns are arranged on one side of the first adjusting ring and one side of the second adjusting ring, and the connecting columns penetrate through the bearings; an adjusting wheel is arranged on one side of the main body seat, the first adjusting ring is sleeved with the adjusting wheel, a fixing assembly is arranged between the first adjusting ring and the second adjusting ring, and the sample piece body is clamped on the fixing assembly. According to the sample wafer clamp, a first adjusting ring and a second adjusting ring are arranged between main body seats and are rotationally connected with the main body seats; the sample sheet body is clamped in the fixing assembly between the first adjusting ring and the second adjusting ring, so that the sample sheet body rotates along with the adjusting rings, adjustment at different angles can be carried out according to requirements, a required part can be accurately aligned, and the experiment effect and the data accuracy are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission electron microscopes, and more specifically, particularly relates to a sample holder for a transmission electron microscope. Background Art

[0002] A transmission electron microscope is a high-resolution microscope used to observe the internal structure and atomic-level details of a sample. It generates high-resolution images by transmitting an electron beam through the sample and collecting the signal of the transmitted electrons. When using a transmission electron microscope, a sample fixture is often required to ensure that the sample can remain in a stable state during the observation process in order to obtain accurate and clear observation results. A sample fixture is a device used to fix and clamp the sample, which can effectively fix the sample so that it does not move or shake under the irradiation of the electron beam. However, traditional sample fixtures are usually simple metal fixtures. During use, the angle cannot be adjusted according to the use requirements, resulting in the inability to accurately align the required observation area, thereby affecting the experimental effect and the accuracy of the data. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the utility model provides a sample clamp for a transmission electron microscope, so as to solve the technical problem in the prior art that the traditional sample clamp is a simple metal clamp, which cannot adjust the angle according to the use requirements, resulting in the inability to accurately align with the required part, causing unstable experimental results and data accuracy.

[0004] The purpose and effect of the sample holder for transmission electron microscope of the utility model are achieved by the following specific technical means:

[0005] A sample holder for a transmission electron microscope comprises a main body seat and a sample body, wherein a first adjusting ring and a second adjusting ring are arranged between the main body seats, the first adjusting ring is connected to the second adjusting ring, mounting grooves are provided at both ends of the main body seat, bearings are arranged in the mounting grooves, connecting columns are arranged on one side of the first adjusting ring and the second adjusting ring, and the connecting columns are passed through the bearings; an adjusting wheel is arranged on one side of the main body seat, the adjusting wheel is sleeved on the first adjusting ring, a fixing component is arranged between the first adjusting ring and the second adjusting ring, and the sample body is clamped on the fixing component.

[0006] According to a preferred embodiment, the fixing assembly includes a fixing plate, the first adjusting ring and the second adjusting ring are both provided with sliding grooves, sliders are provided at both ends of the fixing plate, the sliders are clamped in the sliding grooves, and the fixing plate is slidably connected to the first adjusting ring and the second adjusting ring.

[0007] According to a preferred embodiment, both sides of the first adjustment ring and the second adjustment ring are provided with adjustment grooves, the sliding block is provided with a clamping groove corresponding to the adjustment groove, and the adjustment rod passes through the adjustment groove and is clamped in the clamping groove.

[0008] According to a preferred embodiment, the fixing component is also provided with a fixing card plate, the fixing plate is provided with two groups of positioning columns, the fixing card plate is provided with positioning holes corresponding to the positioning columns, and the positioning columns are inserted into the positioning holes; fixing frames are provided at both ends of the fixing plate, one end of the fixing bolt passes through the fixing frame and contacts the fixing card plate, and the sample body is clamped between the fixing card plate and the fixing plate.

[0009] According to a preferred embodiment, the fixing component is also provided with a fixing card plate, the fixing plate is provided with two groups of positioning columns, the fixing card plate is provided with positioning holes corresponding to the positioning columns, and the positioning columns are inserted into the positioning holes; fixing frames are provided at both ends of the fixing plate, one end of the fixing bolt passes through the fixing frame and contacts the fixing card plate, and the sample body is clamped between the fixing card plate and the fixing plate; multiple groups of springs are also provided between the fixing card plate and the fixing plate, and the springs are sleeved on the positioning columns.

[0010] According to a preferred embodiment, a plurality of groups of buffer pads are provided on corresponding surfaces of the fixing plate and the fixing clamping plate, and the sample body is located between the plurality of groups of buffer pads.

[0011] According to a preferred embodiment, a mounting groove is provided on one side of the main body seat, the adjusting wheel is clamped in the mounting groove, a plurality of groups of protrusions are provided on the inner wall of the mounting groove, and the protrusions are in contact with the adjusting wheel to form a damping structure.

[0012] According to a preferred embodiment, both ends of the first adjustment ring are provided with a socket, the second adjustment ring is provided with a buckle corresponding to the socket, the buckle is clamped in the socket, and the first adjustment ring is detachably connected to the second adjustment ring.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] A first adjusting ring and a second adjusting ring are arranged between the main seats, and a connecting rod is arranged on one side of both of them. The connecting rod is passed through a bearing on the main seat, so that the first adjusting ring and the second adjusting ring are rotatably connected to the main seat; at the same time, a fixing component is arranged between the first adjusting ring and the second adjusting ring, and the sample body is installed on the fixing component, so that the first adjusting ring and the second adjusting ring can rotate, and the sample can be conveniently adjusted to multiple angles by using an adjusting wheel, and can be accurately aligned with the required part, effectively improving the experimental effect and data accuracy, and solving the problem of experimental instability caused by the inability of traditional sample fixtures to adjust the angle.

[0015] The fixing assembly can effectively ensure that the fixing of the sample body reaches a more firm and stable state, avoids the loosening or displacement of the sample during use, and provides a reliable guarantee for the smooth progress of the experiment. Moreover, the fixing assembly is also easy to install and disassemble, which greatly improves the convenience of operation, reduces the operation time and difficulty, and enables the experimenter to work more efficiently. At the same time, sliders are provided at both ends of the fixing plate, and the first adjustment ring and the second adjustment ring are provided with slide grooves, and the sliders can be smoothly stuck in the slide grooves, so that the fixing assembly can be flexibly rotated according to actual use requirements. Combined with the function of the adjusting wheel, the sample body can be conveniently adjusted in angle and direction according to specific needs during the observation process. This multi-angle and multi-directional adjustment capability provides experimenters with greater freedom and operating space, allowing them to observe and analyze the samples more accurately, further improving the effect and quality of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model after assembly.

[0017] Figure 2 It is a schematic diagram of the structure of the utility model after being disassembled.

[0018] Figure 3 It is a schematic diagram of the structure of the first embodiment of the utility model after the fixed component is disassembled.

[0019] Figure 4 It is a schematic diagram of the structure of the second embodiment of the utility model after the fixed component is disassembled.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 11. Main seat; 12. Mounting slot; 13. Assembly slot; 21. Sample body; 22. Adjusting wheel; 31. First adjusting ring; 32. Second adjusting ring; 33. Connecting column; 34. Slide; 35. Adjusting slot; 36. Clamp; 37. Buckle; 41. Fixed plate; 42. Slider; 43. Adjusting rod; 44. Fixed clamp; 45. Positioning column; 46. Positioning hole; 47. Fixed frame; 48. Fixing bolt; 49. Spring. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the technical solution of the present invention, but cannot be used to limit the protection scope of the present invention.

[0023] Embodiment 1: Figure 1 , 2As shown, the utility model provides a sample holder for a transmission electron microscope, including a main body seat 11 and a sample body 21, the main body seat 11 is used as a supporting structure of the entire holder, and a first adjustment ring 31 and a second adjustment ring 32 are arranged between the main body seat 11, and the two adjustment rings are connected to each other to form a rotatable whole. A connecting column 33 is arranged on one side of the first adjustment ring 31 and the second adjustment ring 32, and these connecting columns 33 pass through the bearings in the mounting grooves 12 opened at both ends of the main body seat 11. The connecting column 33 can rotate freely in the bearing, thereby driving the first adjustment ring 31 and the second adjustment ring 32 to rotate relative to the main body seat 11. On one side of the main body seat 11, an adjusting wheel 22 is also arranged, and this adjusting wheel 22 is sleeved on the first adjusting ring 31. When the adjusting wheel 22 is rotated, it can drive the first adjustment ring 31 to rotate accordingly, thereby realizing the angle adjustment of the sample body 21. A fixing component is arranged between the first adjustment ring 31 and the second adjustment ring 32. This fixing assembly plays a key role in fixing the sample body 21, so that the sample body 21 can be firmly mounted on the fixture. The sample body 21 is clamped on the fixing assembly to ensure its safety and stability during use.

[0024] like Figure 2 , 3 As shown, the fixing assembly includes a fixing plate 41, a first adjusting ring 31 and a second adjusting ring 32 are provided with a slide groove 34, and sliders 42 are provided at both ends of the fixing plate 41. The slider 42 can be clamped in the slide groove 34, so that the fixing plate 41 is slidably connected with the first adjusting ring 31 and the second adjusting ring 32. When the sample body 21 needs to be fixed, the fixing plate 41 can easily move on the first adjusting ring 31 and the second adjusting ring 32 through the sliding of the slider 42 in the slide groove 34, so as to find the most suitable position to fix the sample body 21. Such a design not only ensures the firm fixation of the sample body 21, but also provides adjustment space for it. Adjustment grooves 35 are also provided on both sides of the first adjusting ring 31 and the second adjusting ring 32. At the same time, the slider 42 is provided with a card slot corresponding to the adjustment slot 35, and the adjustment rod 43 can pass through the adjustment slot 35 and be clamped in the card slot. When the position of the fixing plate 41 needs to be fine-tuned, it can be achieved by moving the adjusting rod 43 in the adjusting slot 35, so that the sample fixture can adapt to different observation requirements and ensure the accuracy and reliability of the experiment.

[0025] The fixing assembly is also provided with a fixing card plate 44, which provides a more reliable guarantee for the fixation of the sample body 21. Two groups of positioning posts 45 are provided on the fixing plate 41, and the fixing card plate 44 is provided with positioning holes 46 corresponding to these positioning posts 45. When the fixing card plate 44 needs to be installed, the positioning posts 45 will accurately penetrate into the positioning holes 46, so as to achieve accurate positioning of the two. At both ends of the fixing plate 41, a fixing frame 47 is also provided. One end of the fixing bolt 48 will pass through the fixing frame 47 and contact the fixing card plate 44. By tightening the fixing bolt 48, the fixing card plate 44 can be firmly fixed on the fixing plate 41, and then the sample body 21 is tightly clamped between the fixing card plate 44 and the fixing plate 41 to ensure that it will not loosen or shift. The corresponding surfaces of the fixing plate 41 and the fixing card plate 44 are also provided with multiple groups of buffer pads. These buffer pads play a role of buffering and protection. When the sample body 21 is clamped between the two, the buffer pads can effectively reduce the impact of external impact on the sample body 21, and also avoid direct contact between the sample body 21 and the fixed plate 41 and the fixed clamping plate 44 to cause wear or damage.

[0026] A mounting groove 13 is provided on one side of the main body seat 11, and the adjusting wheel 22 is clamped in the mounting groove 13 and closely matched with the mounting groove 13. A plurality of groups of protrusions are provided on the inner wall of the mounting groove 13, and these protrusions are in contact with the adjusting wheel 22 to form a damping structure. The adjusting wheel 22 can feel a certain resistance when rotating, thereby increasing the stability and accuracy of the operation. When the user rotates the adjusting wheel 22, the damping structure can effectively prevent the adjusting wheel 22 from excessive rotation or instability, ensuring the accuracy and controllability of the angle adjustment of the sample body 21. At the same time, both ends of the first adjusting ring 31 are provided with a seat 36, and correspondingly, a buckle 37 is provided on the second adjusting ring 32. When the first adjusting ring 31 and the second adjusting ring 32 need to be connected together, the buckle 37 will be accurately clamped in the seat 36 to achieve a close connection between the two. The first adjusting ring 31 and the second adjusting ring 32 can not only be firmly connected together, but also be easily disassembled.

[0027] Embodiment 2: Based on the sample holder for a transmission electron microscope provided in Embodiment 1 of the present application, Embodiment 2 of the present application proposes a sample holder for a transmission electron microscope. This Embodiment 2 is only a preferred embodiment of Embodiment 1, and the implementation of Embodiment 2 will not affect the independent implementation of Embodiment 1. The second Embodiment 2 of the present utility model will be further described below.

[0028] like Figure 4As shown, the fixing assembly includes a fixing card plate 44, which provides a more reliable guarantee for the fixing of the sample body 21. Two groups of positioning columns 45 are set on the fixing plate 41, and the fixing card plate 44 is provided with positioning holes 46 corresponding to these positioning columns 45. When the fixing card plate 44 needs to be installed, the positioning columns 45 will accurately penetrate into the positioning holes 46 to achieve accurate positioning of the two, ensuring that the fixing card plate 44 can be closely matched with the fixing plate 41, and providing stable support for the fixing of the sample body 21. At both ends of the fixing plate 41, a fixing frame 47 is also provided. One end of the fixing bolt 48 will pass through the fixing frame 47 and contact the fixing card plate 44. By tightening the fixing bolt 48, the fixing card plate 44 can be firmly fixed on the fixing plate 41, so that the sample body 21 is tightly clamped between the fixing card plate 44 and the fixing plate 41, so that it will not be loose or shifted. It is worth mentioning that between the fixing card plate 44 and the fixing plate 41, multiple groups of springs 49 are also provided. When the sample body 21 needs to be taken out, the fixing bolt 48 is loosened, and the fixing clamp 44 is automatically supported by the elasticity of the spring 49, so as to facilitate the taking out of the sample body 21 and the next installation.

[0029] The difference between the second embodiment and the first embodiment is that multiple groups of springs 49 are arranged between the fixed plate 41 and the fixed clamping plate 44, and are sleeved on the positioning column 45. When the sample body 21 is taken, the fixed clamping plate 44 can be automatically supported by the springs 49, which is convenient for taking the sample body 21; at the same time, the springs 49 can also play a certain buffering role to avoid damage to the sample body 21 caused by external forces, which is convenient for operation and ensures the safety of the sample body 21. The remaining conditions are consistent with those of the first embodiment, so this embodiment will not be repeated.

[0030] The basic principle and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A sample holder for a transmission electron microscope, comprising a main body seat (11) and a sample body (21), characterized in that: A first adjusting ring (31) and a second adjusting ring (32) are arranged between the main body seat (11), the first adjusting ring (31) and the second adjusting ring (32) are connected, mounting grooves (12) are provided at both ends of the main body seat (11), bearings are arranged in the mounting grooves (12), connecting columns (33) are arranged on one side of the first adjusting ring (31) and the second adjusting ring (32), and the connecting columns (33) are inserted into the bearings; an adjusting wheel (22) is arranged on one side of the main body seat (11), the adjusting wheel (22) is sleeved on the first adjusting ring (31), a fixing component is arranged between the first adjusting ring (31) and the second adjusting ring (32), and the sample body (21) is clamped on the fixing component.

2. The sample holder for a transmission electron microscope according to claim 1, characterized in that: The fixing assembly comprises a fixing plate (41), the first adjusting ring (31) and the second adjusting ring (32) are both provided with a sliding groove (34), both ends of the fixing plate (41) are provided with a sliding block (42), the sliding block (42) is clamped in the sliding groove (34), and the fixing plate (41) is slidably connected with the first adjusting ring (31) and the second adjusting ring (32).

3. The sample holder for a transmission electron microscope according to claim 2, characterized in that: Both sides of the first adjustment ring (31) and the second adjustment ring (32) are provided with adjustment grooves (35); the sliding block (42) is provided with a clamping groove corresponding to the adjustment groove (35); and the adjustment rod (43) passes through the adjustment groove (35) and is clamped in the clamping groove.

4. The sample holder for a transmission electron microscope according to claim 3, characterized in that: The fixing assembly is further provided with a fixing clamping plate (44), the fixing plate (41) is provided with two groups of positioning posts (45), the fixing clamping plate (44) is provided with positioning holes (46) corresponding to the positioning posts (45), and the positioning posts (45) are inserted into the positioning holes (46); fixing frames (47) are provided at both ends of the fixing plate (41), one end of a fixing bolt (48) passes through the fixing frame (47) and contacts the fixing clamping plate (44), and the sample body (21) is clamped between the fixing clamping plate (44) and the fixing plate (41).

5. The sample holder for a transmission electron microscope according to claim 3, characterized in that: The fixing assembly is further provided with a fixing card plate (44), the fixing plate (41) is provided with two groups of positioning posts (45), the fixing card plate (44) is provided with positioning holes (46) corresponding to the positioning posts (45), and the positioning posts (45) are inserted into the positioning holes (46); fixing frames (47) are provided at both ends of the fixing plate (41), one end of a fixing bolt (48) passes through the fixing frame (47) and contacts the fixing card plate (44), and the sample body (21) is clamped between the fixing card plate (44) and the fixing plate (41); and a plurality of groups of springs (49) are further provided between the fixing card plate (44) and the fixing plate (41), and the springs (49) are sleeved on the positioning posts (45).

6. The sample holder for transmission electron microscopy according to claim 4 or 5, characterized in that: A plurality of groups of buffer pads are provided on the corresponding surfaces of the fixing plate (41) and the fixing clamping plate (44), and the sample piece body (21) is located between the plurality of groups of buffer pads.

7. The sample holder for a transmission electron microscope according to claim 1, characterized in that: A mounting groove (13) is provided on one side of the main body seat (11), the adjusting wheel (22) is clamped in the mounting groove (13), and a plurality of groups of protrusions are provided on the inner wall of the mounting groove (13), the protrusions are in contact with the adjusting wheel (22) to form a damping structure.

8. The sample holder for a transmission electron microscope according to claim 7, characterized in that: Both ends of the first adjustment ring (31) are provided with a clamping seat (36), and the second adjustment ring (32) is provided with a buckle (37) corresponding to the clamping seat (36), and the buckle (37) is clamped in the clamping seat (36), and the first adjustment ring (31) and the second adjustment ring (32) are detachably connected.

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