A mirror fixing device for optical measurement

Abstract

This invention relates to the field of optical measurement equipment technology, specifically disclosing a mirror fixing device for optical measurement, comprising: a base, wherein a support rod is slidably connected to the base, and a fixing frame is fixedly connected to the support rod; a rotating shaft, rotatably connected to the fixing frame, a connecting frame being fixedly connected to the rotating shaft, and two support shafts being rotatably connected to the connecting frame, with a fixing shell fixedly connected between the two support shafts; two fixing columns, each fixedly connected to both sides of the fixing frame, each fixing column being slidably connected to a sliding rod, and a guide ring being fixedly connected between the two sliding rods; and a connecting shell, fixedly connected to one side of the fixing shell, with a ball-end rod slidably connected to the connecting shell. This invention eliminates the need for easily fatigued springs, employing a fully mechanical threaded sleeve and worm gear transmission mechanism to achieve angle and direction adjustment. This mechanical structure eliminates the problem of elasticity attenuation and has strong resistance to vibration interference.

Description

Technical Field

[0001] This invention relates to the field of optical measurement equipment technology, and more specifically, to a mirror fixing device for optical measurement. Background Technology

[0002] Mirror supports are crucial in optical measurements. They provide stable support for the mirror, ensuring its precise position and angle, thus maintaining accurate light reflection. By suppressing vibration and displacement, they guarantee a stable measurement process and improve measurement accuracy. Furthermore, supports are often equipped with adjustment mechanisms to facilitate calibration and adapt to diverse optical path requirements, making them a key component of the optical system.

[0003] Existing reflector supports typically use springs to elastically connect the fixed plate and the deflection plate, and then apply compressive force to the deflection plate using multiple adjusting bolts. Under the combined action of the spring force and the bolt thrust, the angle between the deflection plate and the fixed plate can be finely adjusted, thereby achieving the adjustment of the reflector angle. However, after long-term use, the springs in this structure will experience spring force decay due to material fatigue or stress relaxation, resulting in a weakening of their restoring and holding force on the deflection plate. This not only makes the system more prone to displacement under external vibrations but also reduces the final fixation stability of the reflector, affecting the long-term measurement reliability.

[0004] When fixing a reflector to a mounting bracket, operators typically need to use wrenches and other tools to tighten each bolt on the frame individually. This method is not only cumbersome, but it's also difficult to ensure that the preload of each bolt is completely uniform during manual tightening. This can easily lead to uneven stress on the reflector's mounting frame, causing localized micro-deformation. This results in imperceptible micro-distortions on the reflecting surface, leading to a decrease in optical measurement accuracy.

[0005] In view of this, we propose a mirror fixing device for optical measurement. Summary of the Invention

[0006] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides a mirror fixing device for optical measurement to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a mirror fixing device for optical measurement, comprising: a base, wherein a support rod is slidably connected to the base, and a fixing frame is fixedly connected to the support rod; A rotating shaft is rotatably connected to the fixed frame. A connecting frame is fixedly connected to the rotating shaft. Two support shafts are rotatably connected to the connecting frame. A fixed shell is fixedly connected between the two support shafts. Two fixed columns are provided, which are respectively fixed to both sides of the fixed frame. Each fixed column is slidably connected to a sliding rod, and a guide ring is fixed between the two sliding rods. A connecting shell is fixed to one side of the fixed shell, and a ball-head rod is slidably connected to the connecting shell; An adjustment mechanism is provided on the fixed frame, and the adjustment mechanism is used to change the deflection angle and deflection direction of the fixed shell; A fixing mechanism is provided on the fixing shell, and the fixing mechanism uniformly presses and fixes the reflector.

[0008] Furthermore, the inner wall of the guide ring is provided with an annular groove, the ball head rod is located in the annular groove, the cross-section of the annular groove is hemispherical, and the annular groove limits the movement of the ball head rod.

[0009] Furthermore, the central axis of the fixed shell, the central axis of the rotating shaft, and the central axis of the guide ring coincide with each other.

[0010] Furthermore, the included angle between the connecting shell and the support shaft is 90°.

[0011] Furthermore, the adjustment mechanism includes: A worm gear is fixedly connected to the rotating shaft, and the worm gear is located inside the fixed frame; The worm is rotatably connected to the fixed frame, and the worm meshes with the worm wheel; An angle adjustment component is disposed on the fixing frame, and the angle adjustment component is used to change the tilt angle and height of the fixing shell.

[0012] Furthermore, the deflection angle adjustment component includes: A threaded shell is fixed to the fixed frame and sleeved on the outside of the rotating shaft; A threaded sleeve is threadedly connected to the threaded shell, and a connecting ring is rotatably connected to the threaded sleeve. The connecting ring is fixedly connected to the two sliding rods. A compression bolt is threadedly connected to the base, and the compression bolt abuts against the support rod.

[0013] Furthermore, the fixing mechanism includes: A rotating ring is rotatably connected to the fixed shell, and a circumferentially spaced limiting plate is fixed to the inner wall of the rotating ring; A clamping ring is threadedly connected to the fixed housing, and an elastic rubber ring is fixedly attached to the side of the clamping ring near the rotating shaft.

[0014] Furthermore, the outer side of the clamping ring is provided with circumferentially spaced guide grooves, and the limiting plate slides within the guide grooves of the clamping ring.

[0015] Furthermore, it also includes a limiting mechanism disposed on the rotating shaft, the limiting mechanism being used to limit the positions of the fixed shell and the ball joint; the limiting mechanism includes: A splined shaft is splined to the rotating shaft, and an elastic element is fixedly connected between the splined shaft and the rotating shaft; A connecting block is fixed to the splined shaft, and the connecting block is fixed to two limiting blocks.

[0016] Furthermore, the threaded shell has two limiting grooves on the side away from the fixing frame, and the limiting block is configured to limit the engagement with the limiting grooves of the threaded shell.

[0017] (III) Beneficial Effects Compared with the prior art, the present invention provides a mirror fixing device for optical measurement, which has the following advantages: 1. This invention uses a rotating ring, a limiting plate, and a clamping ring with a guide groove to apply a uniform and concentric clamping force to the edge of the reflector when tightened. This effectively avoids the local stress and micro-deformation of the lens caused by the single-point extrusion of traditional bolts, thereby ensuring the surface shape accuracy of the reflective surface and the accuracy of optical measurement results.

[0018] 2. This invention eliminates the fatigue-prone spring and employs a fully mechanical threaded sleeve and worm gear transmission mechanism to achieve angle and direction adjustment. This mechanical structure eliminates the problem of spring force attenuation, has strong resistance to vibration interference, and can maintain the stability of the adjusted position and attitude for a long time, thus improving the durability and measurement reliability of the device.

[0019] 3. The reflector can be fixed without additional tools; simply rotate the rotating ring by hand. Angle and direction adjustments are controlled by independent threaded sleeves and worm gears, with clear operating paths and mechanical self-locking characteristics. The added limit mechanism provides clear initial positioning, making the adjustment process more intuitive and convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a reflector fixing device for optical measurement according to the present invention; Figure 2 This is a schematic diagram of the sliding rod and guide ring in this invention; Figure 3 This is a schematic diagram of the structure of the fixing frame and worm gear in this invention; Figure 4 This is a cross-sectional view of the fixing frame and guide ring in this invention; Figure 5 This is a schematic diagram of the structure connecting the shell and the ball joint in this invention; Figure 6This is a cross-sectional view of the threaded shell and threaded sleeve in this invention. Figure 7 This is a schematic diagram of the structure of the fixed shell and the rotating ring in this invention; Figure 8 This is a cross-sectional view of the rotating ring and guide groove in this invention. Figure 9 This is a cross-sectional view of the rotating shaft and threaded shell in this invention. Figure 10 This is a schematic diagram of the connecting block and the limiting block in this invention.

[0021] In the diagram: 1. Base; 2. Support rod; 3. Fixing frame; 4. Rotating shaft; 5. Connecting frame; 6. Support shaft; 7. Fixing shell; 8. Fixing column; 9. Sliding rod; 10. Guide ring; 11. Annular groove; 12. Connecting shell; 13. Ball head rod; 14. Worm gear; 15. Worm; 16. Threaded shell; 17. Threaded sleeve; 18. Connecting ring; 19. Extrusion bolt; 20. Rotating ring; 21. Limiting plate; 22. Pressing ring; 23. Guide groove; 24. Splined shaft; 25. Elastic element; 26. Connecting block; 27. Limiting block. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0025] This invention provides a mirror fixing device for optical measurement, such as... Figures 1-5 As shown, it includes: base 1, support rod 2, fixing frame 3, rotating shaft 4, connecting frame 5, support shaft 6, fixing shell 7, fixing column 8, sliding rod 9, guide ring 10, annular groove 11, connecting shell 12, ball head rod 13, adjustment mechanism and fixing mechanism; A base 1 is slidably connected to a support rod 2, and a fixed frame 3 is fixedly connected to the support rod 2. A rotating shaft 4 is rotatably connected to the fixed frame 3, and a connecting frame 5 is fixedly connected to the rotating shaft 4. Two support shafts 6 are rotatably connected to the connecting frame 5, and a fixed shell 7 is fixedly connected between the two support shafts 6. Two fixed columns 8 are provided, and the two fixed columns 8 are respectively fixed to both sides of the fixed frame 3. Each fixed column 8 is slidably connected to a sliding rod 9, and a guide ring 10 is fixedly connected between the two sliding rods 9. A connecting shell 12 is fixed to one side of the fixed shell 7, and a ball head rod 13 is slidably connected to the connecting shell 12. The joint mechanism is set on the fixed frame 3, and the adjustment mechanism is used to change the deflection angle and deflection direction of the fixed shell 7; the fixing mechanism is set on the fixed shell 7, and the fixing mechanism uniformly presses and fixes the reflector; the inner wall of the guide ring 10 is provided with an annular groove 11, and the ball head rod 13 is located in the annular groove 11. The cross-section of the annular groove 11 is hemispherical, and the annular groove 11 limits the ball head rod 13; the central axis of the fixed shell 7, the central axis of the rotating shaft 4 and the central axis of the guide ring 10 coincide with each other; the included angle between the connecting shell 12 and the support shaft 6 is 90°.

[0026] In use, the reflector is first installed and fixed by the fixing mechanism. When the position of the reflector needs to be changed, the guide ring 10 is moved by controlling the adjustment mechanism. The guide ring 10 drives the ball head rod 13 to deflect through the annular groove 11. The ball head rod 13 drives the fixed shell 7 to deflect through the connecting shell 12. The fixed shell 7 deflects along the connecting frame 5 through the support shaft 6, thereby changing the deflection angle of the reflector. The adjustment mechanism is controlled so that the rotating shaft 4 drives the fixed shell 7 to rotate through the connecting frame 5 and the support shaft 6. The fixed shell 7 drives the ball head rod 13 to move along the annular groove 11 of the guide ring 10 through the connecting shell 12. At this time, the reflector and the connecting frame 5 remain relatively stationary and the deflection angle remains unchanged, thus changing the reflection direction of the reflector.

[0027] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the adjustment mechanism includes: worm gear 14, worm 15, threaded housing 16, threaded sleeve 17, connecting ring 18, and clamping bolt 19; Worm gear 14 is fixed to rotating shaft 4 and is located inside fixed frame 3; worm 15 is rotatably connected to fixed frame 3 and meshes with worm gear 14; threaded shell 16 is fixed to fixed frame 3 and is sleeved on the outside of rotating shaft 4; threaded sleeve 17 is threaded to threaded shell 16 and is rotatably connected to connecting ring 18, which is fixed to two sliding rods 9; pressing bolt 19 is threaded to base 1 and abuts against support rod 2.

[0028] Rotating the worm gear 15 causes the rotating shaft 4 to rotate along the fixed frame 3 via the transmission worm wheel 14. The rotating shaft 4 drives the fixed shell 7 to rotate synchronously via the connecting frame 5 and the support shaft 6. When it is necessary to change the angle between the reflector and the connecting frame 5, rotating the threaded sleeve 17 causes the threaded sleeve 17 to move along the threaded shell 16. When the threaded sleeve 17 rotates, the connecting ring 18 and the threaded sleeve 17 rotate relative to each other. The connecting ring 18 drives the guide ring 10 to move via the two sliding rods 9. The guide ring 10 moves laterally along the direction of the rotating shaft 4. The guide ring 10 drives the ball head rod 13 to deflect, thereby changing the deflection angle of the fixed shell 7 and the reflector inside it.

[0029] like Figure 7 and Figure 8 As shown, the fixing mechanism includes: a rotating ring 20, a limiting plate 21, a clamping ring 22, and a guide groove 23; The rotating ring 20 is rotatably connected to the fixed shell 7, and the inner wall of the rotating ring 20 is fixedly connected to the limiting plate 21 with circumferential intervals; the clamping ring 22 is threadedly connected to the fixed shell 7, and the side of the clamping ring 22 near the rotating shaft 4 is fixedly connected to an elastic rubber ring; the outer side of the clamping ring 22 is provided with a guide groove 23 with circumferential intervals, and the limiting plate 21 slides in the guide groove 23 of the clamping ring 22.

[0030] When fixing the reflector, place the reflector inside the fixing shell 7, and then install the clamping ring 22 between the four limiting plates 21, so that the limiting plates 21 slide in the guide groove 23 of the clamping ring 22. Then rotate the rotating ring 20, and the rotating ring 20 drives the clamping ring 22 to rotate circumferentially through the four limiting plates 21, so that the clamping ring 22 is threadedly connected to the fixing shell 7, and the clamping ring 22 evenly squeezes and fixes the edge of the reflector.

[0031] like Figure 9 and Figure 10 As shown, it also includes a limiting mechanism, which is set on the rotating shaft 4. The limiting mechanism is used to limit the position of the fixed shell 7 and the ball head rod 13. The limiting mechanism includes: spline shaft 24, elastic element 25, connecting block 26 and limiting block 27. The spline shaft 24 is splinedly connected to the rotating shaft 4, and an elastic element 25 is fixedly connected between the spline shaft 24 and the rotating shaft 4; the connecting block 26 is fixedly connected to the spline shaft 24, and two limiting blocks 27 are fixedly connected to the connecting block 26; two limiting grooves are provided on the side of the threaded shell 16 away from the fixed frame 3, and the limiting blocks 27 are limited to the limiting grooves of the threaded shell 16, and the limiting blocks 27 are set in a trapezoidal shape.

[0032] In the initial state, the limiting block 27 engages with the threaded shell 16, making the center circumference of the connecting shell 12 and the ball head rod 13 perpendicular to the direction of gravity. When the threaded sleeve 17 is rotated, the guide ring 10 moves, causing the fixed shell 7 to deflect in the horizontal direction, thereby improving the control accuracy of the reflector. When it is necessary to adjust the reflection direction of the reflector, the connecting block 26 is pulled outward, causing the limiting block 27 to separate from the threaded shell 16, and the elastic element 25 is stretched. Then, the worm gear 15 is rotated, causing the rotating shaft 4 to rotate along the fixed frame 3 to adjust the reflection direction of the reflector.

[0033] Working principle: After placing the reflector in the fixed housing 7, the clamping ring 22 is placed between the four limiting plates 21. Then, the rotating ring 20 is rotated. The rotating ring 20 cooperates with the guide groove 23 of the limiting plate 21 and the clamping ring 22, so that the clamping ring 22 is threadedly connected to the fixed housing 7. When the clamping ring 22 moves along the fixed housing 7, the clamping ring 22 squeezes and fixes the edge of the reflector. At the same time, the clamping ring 22 slides along the four limiting plates 21. Through the cooperation between the limiting plate 21 and the clamping ring 22, the reflector is fixed without the use of other tools, and the edge of the reflector is evenly stressed, preventing the reflector from being slightly deformed due to uneven fixing force, thereby ensuring the optical measurement accuracy.

[0034] Then rotate the clamping bolt 19 until it no longer presses against the support rod 2. Adjust the position of the support rod 2 to bring the reflector to the specified height. Tighten the clamping bolt 19 to re-secure the support rod 2. Then, as needed, measure and change the deflection angle of the reflector and the direction of the reflected light. The specific adjustment method is as follows: When it is necessary to adjust the deflection angle of the reflector: Rotating the threaded sleeve 17 causes it to move along the threaded shell 16. The threaded sleeve 17 drives two sliding rods 9 to slide along the fixed post 8 via the connecting ring 18. The sliding rods 9 drive the guide ring 10 to move. During the movement, the guide ring 10 always remains concentric with the central axis of the rotating shaft 4. The guide ring 10 drives the ball head rod 13 to deflect via the annular groove 11. The ball head rod 13 drives the fixed shell 7 to rotate along the support shaft 6 via the connecting shell 12. The fixed shell 7 and the reflector on it rotate, thereby changing the deflection angle of the reflector. During the above process, the limiting block 27 and the threaded shell 16 are in a limiting state. Therefore, during this adjustment, the reflector deflects in the horizontal direction.

[0035] When it is necessary to adjust the reflection direction of the reflector: Pulling the connecting block 26 outward causes the limiting block 27 to lose its limiting position from the threaded shell 16, stretching and storing the elastic element 25. Then, the worm gear 15 is rotated. The worm gear 15, in cooperation with the turbine, causes the rotating shaft 4 to rotate along the fixed frame 3. The rotating shaft 4 drives the fixed shell 7 to rotate through the connecting frame 5 and the support shaft 6. The fixed shell 7 drives the connecting shell 12 and the ball head rod 13 to rotate together. The ball head rod 13 slides along the annular groove 11. During the above process, the included angle between the connecting frame 5 and the fixed shell 7 remains unchanged to change the direction of the reflected light from the reflector. When the connecting block 26 is released, the limiting block 27 abuts against the threaded shell 16 under the elastic force of the elastic element 25.

[0036] Through the above operations, the adjustment of the reflector is completed. During the entire adjustment process, the reflector can be adjusted in different directions simply by rotating the worm gear 15 and the threaded sleeve 17. This not only improves the convenience of adjustment, but also improves the adjustment accuracy of the reflector through the threaded transmission.

[0037] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. These will not be elaborated here. For all fixed connections mentioned above, welding is preferred. 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A mirror fixing device for optical measurement, characterized in that, include: The base (1) is slidably connected to a support rod (2), and the support rod (2) is fixedly connected to a fixing frame (3). A rotating shaft (4) is rotatably connected to the fixed frame (3). A connecting frame (5) is fixedly connected to the rotating shaft (4). Two support shafts (6) are rotatably connected to the connecting frame (5). A fixed shell (7) is fixedly connected between the two support shafts (6). Two fixed columns (8) are provided. The two fixed columns (8) are respectively fixed to both sides of the fixed frame (3). The two fixed columns (8) are slidably connected to sliding rods (9). A guide ring (10) is fixed between the two sliding rods (9). A connecting shell (12) is fixed to one side of the fixed shell (7), and a ball head rod (13) is slidably connected to the connecting shell (12). An adjustment mechanism is provided on the fixed frame (3), and the adjustment mechanism is used to change the deflection angle and deflection direction of the fixed shell (7); A fixing mechanism is provided on the fixing shell (7), which uniformly presses and fixes the reflector.

2. The mirror fixing device for optical measurement according to claim 1, characterized in that, The inner wall of the guide ring (10) is provided with an annular groove (11), and the ball head rod (13) is located in the annular groove (11). The cross surface of the annular groove (11) is hemispherical, and the annular groove (11) limits the ball head rod (13).

3. The mirror fixing device for optical measurement according to claim 1, characterized in that, The central axis of the fixed shell (7), the central axis of the rotating shaft (4), and the central axis of the guide ring (10) coincide with each other.

4. A mirror fixing device for optical measurement according to claim 3, characterized in that, The included angle between the connecting shell (12) and the support shaft (6) is 90°.

5. A mirror fixing device for optical measurement according to claim 1, characterized in that, The adjustment mechanism includes: Worm gear (14) is fixed to the rotating shaft (4) and the worm gear (14) is located inside the fixed frame (3); The worm (15) is rotatably connected to the fixed frame (3), and the worm (15) meshes with the worm wheel (14); An angle adjustment component is provided on the fixed frame (3), and the angle adjustment component is used to change the tilt angle and height of the fixed shell (7).

6. A mirror fixing device for optical measurement according to claim 5, characterized in that, The deflection angle adjustment component includes: A threaded shell (16) is fixed to the fixing frame (3), and the threaded shell (16) is sleeved on the outside of the rotating shaft (4); A threaded sleeve (17) is threadedly connected to the threaded shell (16). The threaded sleeve (17) is rotatably connected to a connecting ring (18), and the connecting ring (18) is fixedly connected to the two sliding rods (9). A compression bolt (19) is threaded to the base (1) and abuts against the support rod (2).

7. A mirror fixing device for optical measurement according to claim 1, characterized in that, The fixing mechanism includes: A rotating ring (20) is rotatably connected to the fixed shell (7), and a circumferentially spaced limiting plate (21) is fixed to the inner wall of the rotating ring (20). A clamping ring (22) is threaded to the fixed shell (7), and an elastic rubber ring is fixed to the side of the clamping ring (22) near the rotating shaft (4).

8. A mirror fixing device for optical measurement according to claim 7, characterized in that, The outer side of the clamping ring (22) is provided with a guide groove (23) with circumferential intervals, and the limiting plate (21) slides within the guide groove (23) of the clamping ring (22).

9. A mirror fixing device for optical measurement according to claim 6, characterized in that, It also includes a limiting mechanism disposed on the rotating shaft (4), the limiting mechanism being used to limit the positions of the fixed shell (7) and the ball joint (13); the limiting mechanism includes: A spline shaft (24) is splined and connected to the rotating shaft (4), and an elastic element (25) is fixed between the spline shaft (24) and the rotating shaft (4). The connecting block (26) is fixed to the spline shaft (24), and the connecting block (26) is fixed to two limiting blocks (27).

10. A mirror fixing device for optical measurement according to claim 9, characterized in that, The threaded shell (16) has two limiting grooves on the side away from the fixing frame (3). The limiting block (27) is in a limiting fit with the limiting groove of the threaded shell (16). The limiting block (27) is set in a trapezoidal shape.

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