A quick positioning and fixing device for electron microscope sample stage

Abstract

The utility model discloses a kind of electron microscope sample stage rapid positioning fixing device, including support rod and electron microscope, the top end of the support rod is fixed with electron microscope, the outer wall center of the support rod is fixed with fixed block, the outer wall of the fixed block is attached with fixed plate, the inner wall of the fixed plate is fixed with limit block, and the limit block is inserted in the outer wall of the fixed block, the lateral wall of the fixed plate is provided with auxiliary part, the back of the fixed plate is fixed with plug rod on both sides, the back center of the fixed plate is fixed with groove block, the both sides of the groove block are fixed with sleeve. Through the accurate matching design of the limiting slot on fixed block and the limit block on fixed plate, the preliminary accurate positioning of fixed plate and fixed block can be realized in early installation stage, the accuracy of sample stage installation position is ensured, the problems of traditional device positioning ambiguity and installation deviation are effectively avoided, and the accuracy of subsequent detection work is laid foundation.

Description

Technical Field

[0001] This utility model relates to the field of electron microscope sample stage technology, specifically to a rapid positioning and fixing device for an electron microscope sample stage. Background Technology

[0002] In the use of electron microscopes, the sample stage is a key component that carries the sample for testing. The accuracy and stability of its installation and positioning directly affect the reliability of the test results. At the same time, the ease of installation and operation also has an important impact on the test efficiency. However, the commonly available electron microscope sample stages on the market present many inconveniences during installation. The fixing structure of traditional sample stages is relatively complex, often requiring multiple adjustments to ensure alignment during installation. This not only consumes a lot of time but also makes it difficult to achieve precise positioning, making it easy for sample detection to deviate due to installation misalignment. In addition, their fixing methods often rely on multiple scattered fasteners, requiring one-by-one operation during installation and disassembly, which is cumbersome and greatly reduces work efficiency, causing many inconveniences for operators. More importantly, existing sample stages generally lack effective emergency handling mechanisms. In actual testing, if the sample stage surface is not cleaned in time after testing, residual samples or impurities may affect the normal progress of subsequent testing. In this case, operators often need to interrupt the testing process to clean the sample stage, and cannot quickly switch to the other side of the sample stage for emergency use. This not only delays the testing progress, but may also increase the risk of sample contamination due to frequent cleaning operations, adversely affecting the continuity and stability of the testing work. Utility Model Content

[0003] The purpose of this invention is to provide a rapid positioning and fixing device for an electron microscope sample stage to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rapid positioning and fixing device for an electron microscope sample stage, comprising a support rod and an electron microscope. The electron microscope is fixed to the top of the support rod, a fixing block is fixed to the center of the outer wall of the support rod, a fixing plate is attached to the outer wall of the fixing block, a limiting block is fixed to the inner wall of the fixing plate, and the limiting block is inserted into the outer wall of the fixing block. An auxiliary component is provided on the side wall of the fixing plate, insert rods are fixed to both sides of the back of the fixing plate, a groove block is fixed to the center of the back of the fixing plate, sleeves are fixed to both sides of the groove block, a double-ended stud is rotatably connected to the back of the groove block, threaded blocks are threaded to the outer walls of both sides of the double-ended stud, a locking block is fixed to the side wall of the threaded block, and a driving component is provided on the back of the double-ended stud.

[0005] Preferably, the outer wall of the fixing block is provided with a limiting groove, and the position of the limiting groove corresponds to the limiting block, and the shape matches it.

[0006] Preferably, the auxiliary component includes a frame, which is fixed to the front surface of the fixing plate, and a sample stage is rotatably connected inside the frame. Fixing pins are threaded to both sides of the frame.

[0007] Preferably, the sample stage has fixing holes on both sides.

[0008] Preferably, the fixing pin extends through the frame into the interior of the sample stage for locking and limiting.

[0009] Preferably, the driving component includes a first bevel gear, which is fixed to the outer wall of the center of the double-ended stud. A second bevel gear is meshed with the back of the first bevel gear, and the second bevel gear is rotatably connected to the inside of the slot through a bearing shaft. A protrusion is fixed to the back of the second bevel gear.

[0010] Preferably, the protrusion is connected to the second bevel gear via a transmission rod, and the protrusion has a diamond-shaped groove inside.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By precisely matching the limiting groove on the fixing block with the limiting block on the fixing plate, the initial accurate positioning of the fixing plate and the fixing block can be achieved in the early stage of installation, ensuring the accuracy of the sample stage installation position and effectively avoiding the problems of vague positioning and installation offset of traditional devices, laying the foundation for the accuracy of subsequent testing work. With the help of a fixing structure composed of double-headed studs, threaded blocks, and locking blocks, the fixing plate can be further fixed firmly on the fixing block after the initial positioning. The locking block and the trapezoidal slot on the insertion rod are tightly engaged, which can effectively prevent the sample stage from shaking or shifting during the test, ensuring the stability of the test process and improving the reliability of the test results. The drive unit adopts a bevel gear transmission structure. The operator can complete the entire fixing process by rotating the protrusion with a tool. The operation is simple and labor-saving. Compared with the traditional complicated fixing method, it greatly shortens the installation and disassembly time of the sample stage, realizes the rapid loading and unloading of the sample stage, and improves work efficiency. The sample stage is rotatably connected to the frame via a bearing seat. With the help of the fixing pin, the sample stage can be quickly flipped and fixed when the sample stage surface is not cleaned in time but testing needs to continue, enabling emergency use. This design enhances the flexibility and practicality of the device and avoids delays in testing due to cleaning the sample stage. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Detailed view of the connection structure from a top-down cross-section; Figure 3 for Figure 2 Enlarged detail of the connection structure of the driving component; Figure 4 for Figure 1 Detailed diagram of the connection structure of the disassembled auxiliary components; Figure 5 for Figure 2 Detailed diagram of the connection structure of the central protrusion, viewed from above.

[0013] In the diagram: 1. Support rod, 2. Electron microscope, 3. Fixing block, 4. Fixing plate, 5. Limiting block, 6. Frame, 7. Sample stage, 8. Fixing pin, 9. Insert rod, 10. Groove block, 11. Sleeve, 12. Double-ended stud, 13. Threaded block, 14. Clamping block, 15. First bevel gear, 16. Second bevel gear, 17. Protrusion. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 This utility model provides a technical solution for a rapid positioning and fixing device for an electron microscope sample stage: A rapid positioning and fixing device for an electron microscope sample stage includes a support rod 1 and an electron microscope 2. The electron microscope 2 is fixed at the top of the support rod 1. A fixing block 3 is fixed at the center of the outer wall of the support rod 1. A limiting groove is formed on the outer wall of the fixing block 3. The cross-sectional shape of the limiting groove is circular. A limiting block 5 is matched and can accurately cooperate with the limiting block 5 to achieve the initial positioning of the fixing plate 4. The fixing plate 4 is attached to the outer wall of the fixing block 3. The fixing plate 4 is U-shaped and fits tightly without gaps when attached to the outer wall of the fixing block 3. The limiting block 5 is fixed to the inner wall of the fixing plate 4 and is inserted into the outer wall of the fixing block 3. The limiting block 5 can be accurately inserted into the limiting groove of the fixing block 3 to limit the displacement of the fixing plate 4 and prevent the fixing plate 4 from shaking or shifting during use.

[0016] The side wall of the fixing plate 4 is provided with auxiliary parts. The back of the fixing plate 4 is fixed with insert rods 9 on both sides. The side wall of the insert rods 9 is provided with trapezoidal slots, which match the shape of the locking block 14. The center of the back of the fixing plate 4 is fixed with a groove block 10, which is used to support the stud 12. The sides of the groove block 10 are fixed with sleeves 11. The back of the groove block 10 is rotatably connected with a double-ended stud 12. The outer walls of the two sides of the double-ended stud 12 are threaded with threaded blocks 13. Limiting strips are processed at the positions where the threaded blocks 13 contact the groove block 10. When the double-ended stud 12 rotates, the limiting strips limit the threaded blocks 13 to move outward and will not rotate with the double-ended stud 12. The side wall of the threaded block 13 is fixed with a locking block 14. The back of the double-ended stud 12 is provided with a driving part. The outer wall of the fixing block 3 is provided with a limiting groove, and the position of the limiting groove corresponds to the limiting block 5, and the shape matches it.

[0017] The auxiliary components include a frame 6, which is fixed to the front surface of the fixing plate 4. The interior of the frame 6 is machined with a bearing seat for mounting the sample stage 7. The bearing facilitates the flipping of the sample stage between the two sides for use. This prevents the sample stage from being flipped to the other side for testing when the surface of the sample stage is not cleaned in time. The sample stage 7 is rotatably connected inside the frame 6. The two sides of the frame 6 are threaded with fixing pins 8. When the fixing pins 8 penetrate the frame 6 and extend into the interior of the sample stage 7, they can tightly lock the sample stage 7, thereby limiting and fixing the sample stage 7 and preventing it from moving during the testing process. Fixing holes are opened on both sides of the sample stage 7, and the fixing pins 8 penetrate the frame 6 and extend into the interior of the sample stage 7 for locking and limiting.

[0018] The driving component includes a first bevel gear 15, which is fixed to the outer wall of the center of the double-ended stud 12. The meshing of the first bevel gear 15 with the second bevel gear 16 ensures smooth transmission. The back of the first bevel gear 15 is meshed with the second bevel gear 16, and the second bevel gear 16 is rotatably connected to the inside of the slot block 10 through a bearing shaft. A protrusion 17 is fixed to the back of the second bevel gear 16. The protrusion 17 can drive the second bevel gear 16 to rotate and transmit force to the first bevel gear. The protrusion 17 is connected to the second bevel gear 16 through a transmission rod, and a diamond-shaped slot is opened inside the protrusion 17 to facilitate the rotation of it by the operator using tools.

[0019] Working principle: When a rapid positioning and fixing device for an electron microscope sample stage is first used, and the sample stage 7 needs to be installed, the user lifts the fixing plate 4 by using the frame 6, aligns the limiting block 5 with the limiting groove on the surface of the fixing block 3, and then inserts it. After insertion, the fixing plate 4 fits tightly against the outer wall of the fixing block 3. The insertion rod 9 is inserted into the sleeve 11 by the fixing plate 4. Then, the user rotates the protrusion 17 using a diamond-shaped wrench. When rotating, the protrusion 17 drives the second bevel gear 16 to rotate simultaneously. Then, the second bevel gear 16 meshes with the first bevel gear 15, transmitting force to the first bevel gear 15. When the first bevel gear 15 rotates... The double-ended stud 12 rotates simultaneously at the temporal part of the slot block 10. During the rotation of the double-ended stud 12, the threaded block 13 moves outward on its outer wall. During the movement, the locking block 14 moves outward and inserts into the inside of the sleeve 11 to fit against the insertion rod 9 to achieve a locking connection. After the insertion rod 9 is inserted, it indirectly limits and fixes the frame 6 and the sample stage 7. Then, the user can place the sample to be observed and tested at the center of the sample stage for testing. If the sample stage surface is not cleaned in time after testing, the user can rotate the fixing pin 8 to pull it out from the temporal part of the sample stage 7 and the frame 6 and then flip the sample stage 7. After flipping, it is fixed by the fixing pin 8, thereby achieving emergency use.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid positioning and fixing device for an electron microscope sample stage, comprising a support rod (1) and an electron microscope (2), wherein the electron microscope (2) is fixed to the top end of the support rod (1), characterized in that, A fixing block (3) is fixed at the center of the outer wall of the support rod (1). A fixing plate (4) is attached to the outer wall of the fixing block (3). A limiting block (5) is fixed to the inner wall of the fixing plate (4). The limiting block (5) is inserted into the outer wall of the fixing block (3). An auxiliary component is provided on the side wall of the fixing plate (4). Insert rods (9) are fixed on both sides of the back of the fixing plate (4). A groove block (10) is fixed at the center of the back of the fixing plate (4). A sleeve (11) is fixed on both sides of the groove block (10). A double-headed stud (12) is rotatably connected inside the back of the groove block (10). Threaded blocks (13) are threadedly connected to the outer walls of both sides of the double-headed stud (12). A locking block (14) is fixed on the side wall of the threaded block (13). A driving component is provided on the back of the double-headed stud (12).

2. The rapid positioning and fixing device for an electron microscope sample stage according to claim 1, characterized in that, The outer wall of the fixing block (3) is provided with a limiting groove, and the position of the limiting groove corresponds to the limiting block (5), and the shape matches it.

3. The rapid positioning and fixing device for an electron microscope sample stage according to claim 1, characterized in that, The auxiliary component includes a frame (6), which is fixed to the front surface of the fixing plate (4). A sample stage (7) is rotatably connected inside the frame (6), and fixing pins (8) are threadedly connected to both sides of the frame (6).

4. The rapid positioning and fixing device for an electron microscope sample stage according to claim 3, characterized in that, The sample stage (7) has fixing holes on both sides.

5. The rapid positioning and fixing device for an electron microscope sample stage according to claim 3, characterized in that, The fixing pin (8) extends through the frame (6) into the interior of the sample stage (7) for locking and limiting.

6. The rapid positioning and fixing device for an electron microscope sample stage according to claim 1, characterized in that, The drive component includes a first bevel gear (15), which is fixed to the outer wall of the center of the double-ended stud (12). A second bevel gear (16) is meshed with the back of the first bevel gear (15), and the second bevel gear (16) is rotatably connected to the inside of the slot (10) through a bearing shaft. A protrusion (17) is fixed to the back of the second bevel gear (16).

7. The rapid positioning and fixing device for an electron microscope sample stage according to claim 6, characterized in that, The protrusion (17) is connected to the second bevel gear (16) via a transmission rod, and a diamond-shaped slot is provided inside the protrusion (17).

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