A position limiting locking device for scanning electron microscope sample stage

Abstract

The utility model relates to scanning electron microscope sample stage technical field especially a kind of limiting locking device for scanning electron microscope sample stage, including pedestal, the outer ring of pedestal top is opened with threaded hole, the inner cavity of threaded hole is connected with sample stage by screw thread, the surface of sample stage is opened with clamping groove, the center of pedestal bottom is penetrated and is installed with plug-in assembly, the plug-in assembly includes connecting column, the bottom fixed welding of connecting column surface is connected with connecting rod, the end of connecting rod is fixedly connected with plugboard, the center of pedestal bottom is fixedly welded with threaded cylinder. The utility model solves the problem that multiple sample stages need to be installed continuously, and the staff needs to lock one by one, which greatly wastes time and physical effort. The multiple sample stages can be locked simultaneously, the operation time of manually locking the sample stages one by one is saved, and the work efficiency is improved, thereby facilitating subsequent electron microscope scanning work.

Description

Technical Field

[0001] This utility model relates to the field of scanning electron microscope sample stage technology, specifically a limiting and locking device for scanning electron microscope sample stage. Background Technology

[0002] A scanning electron microscope (SEM) is an electronic observation device that falls between a transmission electron microscope and an optical microscope. It uses a narrowly focused high-energy electron beam to scan a sample. Through the interaction between the beam and the material, various physical information is excited, and this information is collected, magnified, and re-imaged to characterize the microscopic morphology of the material.

[0003] A search revealed that the announcement number is CN219513043U, entitled "A Limiting and Locking Device for a Scanning Electron Microscope Sample Stage, including a sample stage base." Research and analysis showed that while the device effectively facilitates the disassembly of the scanning electron microscope sample stage using a movable plate, it also has the following drawbacks to some extent.

[0004] For example, only one sample stage can be locked at a time. When using it, multiple sample stages need to be installed continuously, and staff need to lock them one by one, which wastes a lot of time and energy. Moreover, the installation and disassembly are inconvenient and the practicality is limited. In order to solve the above technical problems, we designed a limiting locking device for scanning electron microscope sample stages. Utility Model Content

[0005] The purpose of this invention is to provide a limiting and locking device for a scanning electron microscope sample stage, which has the advantage of locking multiple sample stages at the same time. This solves the problem that when using the device, multiple sample stages need to be installed continuously and locked one by one by the staff, which greatly wastes time and energy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a limiting and locking device for a scanning electron microscope sample stage, comprising a base, a threaded hole circumferentially formed around the top of the base, a sample stage being threadedly connected to the inner cavity of the threaded hole, a slot formed on the surface of the sample stage, a plug-in assembly being installed through the center of the bottom of the base, the plug-in assembly comprising a connecting post, a connecting rod being fixedly welded to the bottom of the surface of the connecting post, an insert plate being fixedly connected to the end of the connecting rod, a threaded cylinder being fixedly welded to the center of the bottom of the base, a rotating assembly being sleeved on the outer surface of the base, the rotating assembly comprising a rotating ring, a locking plate being fixedly connected to the top of the rotating ring, an installation assembly being fixedly installed at the bottom of the base, and a fixing assembly being fixedly installed at the top of the connecting post, the fixing assembly comprising a fixing post, the fixing post being threadedly connected to the top of the top of the connecting post.

[0007] Preferably, a through hole is provided at the center of the top of the base to cooperate with the connecting post, the connecting post is provided in the inner cavity of the through hole, and an external thread is provided at the bottom of the outer surface of the threaded cylinder.

[0008] Preferably, the rotating ring is movably sleeved on the outer surface of the base, the outer ring of the rotating ring is fixedly connected to a rotating plate, and the bottom of the rotating ring is provided with a slot that cooperates with the insert plate.

[0009] Preferably, the mounting assembly includes a mounting base, the center of the top of the mounting base having a threaded groove that mates with the threaded cylinder, and the outer ring of the top of the mounting base having a connecting groove directly below the threaded hole.

[0010] Preferably, a torsion spring is fitted onto the surface of the fixed column, and the top and bottom of the torsion spring are fixedly connected to the surface of the fixed column and the top of the base, respectively.

[0011] Preferably, the bottom of the card plate is in sliding contact with the surface of the base, and the inner wall of the card slot is in sliding contact with the surface of the card plate.

[0012] Preferably, the surface of the threaded cylinder is provided with a rotating groove, the bottom of the rotating groove penetrates the bottom of the threaded cylinder, and the surface of the connecting rod is in sliding contact with the inner wall of the rotating groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention connects the sample stage to the inner cavity of the threaded hole via a threaded connection. The rotation of the fixed column drives the connecting column to rotate, which in turn drives the connecting rod and the insert plate to rotate. This causes the rotating ring and the locking plate to rotate accordingly. The locking plate rotates into the slot to lock the sample stage, allowing multiple sample stages to be locked simultaneously. This saves the time of manually locking each sample stage one by one, improves work efficiency, and facilitates subsequent electron microscopy scanning. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional exploded view of the present invention;

[0017] Figure 3 This is a bottom-view perspective view of the disassembly mechanism of this utility model;

[0018] Figure 4 This is a bottom-view perspective view of the rotating component, plug-in component, and base connection state of this utility model.

[0019] In the diagram: 1. Base; 2. Sample stage; 3. Slot; 4. Threaded hole; 5. Rotating groove; 6. Rotating assembly; 61. Rotating ring; 62. Slot plate; 63. Slot; 64. Rotating plate; 7. Mounting assembly; 71. Mounting base; 72. Connecting groove; 73. Threaded groove; 8. Fixing assembly; 81. Fixing post; 82. Torsion spring; 9. Insertion assembly; 91. Connecting post; 92. Connecting rod; 93. Insertion plate; 10. Threaded cylinder. Detailed Implementation

[0020] Please see Figures 1-4 A limiting and locking device for a scanning electron microscope sample stage includes a base 1. A threaded hole 4 is formed around the outer circumference of the top of the base 1. A sample stage 2 is threadedly connected to the inner cavity of the threaded hole 4. A slot 3 is formed on the surface of the sample stage 2. A plug-in assembly 9 is installed through the center of the bottom of the base 1. The plug-in assembly 9 includes a connecting post 91. A connecting rod 92 is fixedly welded to the bottom of the surface of the connecting post 91. A plug plate 93 is fixedly connected to the end of the connecting rod 92. A threaded cylinder 10 is fixedly welded to the center of the bottom of the base 1. A rotating assembly 6 is mounted on the surface. The rotating assembly 6 includes a rotating ring 61. A clamping plate 62 is fixedly connected to the top of the rotating ring 61. An installation assembly 7 is fixedly mounted on the bottom of the base 1. A fixing assembly 8 is fixedly mounted on the top of the connecting column 91. The fixing assembly 8 includes a fixing column 81. By setting the fixing column 81, it is convenient for the operator to rotate the connecting column 91, thereby driving the clamping plate 62 to move, so that it can be inserted into and removed from the clamping slot 3. The fixing column 81 is threadedly connected to the top of the top of the connecting column 91.

[0021] Please see Figure 2 and Figure 3 A through hole is provided at the center of the top of the base 1 to cooperate with the connecting post 91. The connecting post 91 is provided in the inner cavity of the through hole. An external thread is provided at the bottom of the outer surface of the threaded cylinder 10.

[0022] Please see Figure 1 , Figure 2 and Figure 3 The rotating ring 61 is movably sleeved on the outer surface of the base 1. The outer ring of the rotating ring 61 is fixedly connected to the rotating plate 64. The bottom of the rotating ring 61 is provided with a slot 63 that mates with the insert plate 93.

[0023] Please see Figure 2 The mounting component 7 includes a mounting base 71, a threaded groove 73 that mates with the threaded cylinder 10 is provided at the center of the top of the mounting base 71, and a connecting groove 72 is provided on the outer ring of the top of the mounting base 71 and directly below the threaded hole 4.

[0024] Please see Figure 2 and Figure 3A torsion spring 82 is fitted onto the surface of the fixed column 81. The top and bottom of the torsion spring 82 are fixedly connected to the surface of the fixed column 81 and the top of the base 1, respectively. By setting the torsion spring 82, the fixed column 81 can be automatically reset after rotation, saving the time of manual reset. It can also apply torque to the fixed column 81 under normal conditions to prevent it from shaking randomly, so that the card plate 62 can be locked in the inner cavity of the card slot 3 under normal conditions.

[0025] Please see Figure 1 The bottom of the card plate 62 is in sliding contact with the surface of the base 1, and the inner wall of the card slot 3 is in sliding contact with the surface of the card plate 62.

[0026] Please see Figure 4 The surface of the threaded cylinder 10 is provided with a rotating groove 5. The bottom of the rotating groove 5 penetrates the bottom of the threaded cylinder 10. The surface of the connecting rod 92 is in sliding contact with the inner wall of the rotating groove 5. The upper part of the rotating groove 5 is larger than the connecting rod 92, which is used for the connecting rod 92 to rotate. The lower part of the rotating groove 5 is just adapted to the connecting rod 92, which is used to allow the connecting rod 92 to be inserted from below the threaded cylinder 10 into the upper part of the inner cavity of the slot 3.

[0027] In use, the sample stage 2 is threaded into the inner cavity of the threaded hole 4. The rotation of the fixed post 81 drives the connecting post 91 to rotate, which in turn drives the connecting rod 92 and the insert plate 93 to rotate. The connecting rod 92 rotates inside the rotating groove 5, causing the rotating ring 61 and the locking plate 62 to rotate accordingly. The locking plate 62 rotates into the locking groove 3 and locks the sample stage 2. When the sample stage 2 reverses, it moves upwards along the thread, but the locking plate 62 is locked in the inner cavity of the locking groove 3, contacting the bottom of the groove 3 to block it, thus preventing the sample stage 2 from moving upwards and achieving a locking effect. When it is necessary to disassemble the sample stage 2, reverse the direction... Rotate the fixed column 81 to cause the rotating ring 61 to reverse, thereby moving the clamping plate 62 out of the slot 3. At this time, the torsion spring 82 twists, and the clamping plate 62 disengages from the slot 3. Therefore, the sample stage 2 can be unscrewed for disassembly and replacement. When the fixed column 81 is released, the torsion spring 82 causes the fixed column 81 to automatically reset, thereby causing the clamping plate 62 to re-clamp into the slot 3. When the entire device needs to be disassembled, simply unscrew the fixed column 81 from the top of the connecting column 91, and then unscrew the mounting base 71 from the outer surface of the threaded cylinder 10. At this time, the connecting column 91 and the connecting rod 92 can be moved out of the rotating groove 5 to achieve the disassembly effect.

[0028] In summary, this limiting and locking device for scanning electron microscope sample stages, through the cooperation of the slot 3, threaded hole 4, rotating groove 5, rotating assembly 6, mounting assembly 7, insert plate 93 and threaded cylinder 10, solves the problem that when using it, multiple sample stages need to be installed continuously and locked one by one by the staff, which greatly wastes time and energy.

Claims

1. A limiting and locking device for a scanning electron microscope sample stage, comprising a base (1), characterized in that: The base (1) has a threaded hole (4) around its top outer ring. A sample stage (2) is threaded into the inner cavity of the threaded hole (4). A slot (3) is formed on the surface of the sample stage (2). A plug-in assembly (9) is installed through the center of the bottom of the base (1). The plug-in assembly (9) includes a connecting post (91). A connecting rod (92) is fixedly welded to the bottom of the surface of the connecting post (91). A plug plate (93) is fixedly connected to the end of the connecting rod (92). The center of the bottom of the base (1) A threaded cylinder (10) is fixedly welded to the base (1). A rotating assembly (6) is fitted on the outer surface of the base (1). The rotating assembly (6) includes a rotating ring (61). A clamping plate (62) is fixedly connected to the top of the rotating ring (61). An installation assembly (7) is fixedly installed at the bottom of the base (1). A fixing assembly (8) is fixedly installed at the top of the connecting column (91). The fixing assembly (8) includes a fixing column (81). The fixing column (81) is threadedly connected to the top of the top of the connecting column (91).

2. The limiting and locking device for a scanning electron microscope sample stage according to claim 1, characterized in that: The base (1) has a through hole at the center of its top that mates with the connecting post (91). The connecting post (91) is disposed inside the through hole. The bottom of the outer surface of the threaded cylinder (10) has an external thread.

3. The limiting and locking device for a scanning electron microscope sample stage according to claim 1, characterized in that: The rotating ring (61) is movably sleeved on the outer surface of the base (1). The outer ring of the rotating ring (61) is fixedly connected to the rotating plate (64). The bottom of the rotating ring (61) is provided with a slot (63) that cooperates with the insert plate (93).

4. A limiting and locking device for a scanning electron microscope sample stage according to claim 1, characterized in that: The mounting assembly (7) includes a mounting base (71), and a threaded groove (73) that mates with the threaded cylinder (10) is provided at the center of the top of the mounting base (71). A connecting groove (72) is provided on the outer ring of the top of the mounting base (71) and directly below the threaded hole (4).

5. A limiting and locking device for a scanning electron microscope sample stage according to claim 1, characterized in that: A torsion spring (82) is fitted onto the surface of the fixed column (81), and the top and bottom of the torsion spring (82) are fixedly connected to the surface of the fixed column (81) and the top of the base (1), respectively.

6. A limiting and locking device for a scanning electron microscope sample stage according to claim 1, characterized in that: The bottom of the card plate (62) is in sliding contact with the surface of the base (1), and the inner wall of the card slot (3) is in sliding contact with the surface of the card plate (62).

7. A limiting and locking device for a scanning electron microscope sample stage according to claim 1, characterized in that: The threaded cylinder (10) has a rotating groove (5) on its surface. The bottom of the rotating groove (5) penetrates the bottom of the threaded cylinder (10). The surface of the connecting rod (92) is in sliding contact with the inner wall of the rotating groove (5).

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