Fixing and adjusting mechanism of two-dimensional scanning galvanometer

Abstract

This utility model discloses a fixing and adjustment mechanism for a two-dimensional scanning galvanometer, belonging to the field of confocal microendoscopic imaging and detection technology. It employs a detachable and securely connected positioning seat and base. Corresponding arc-shaped grooves are provided on the positioning seat and base to form mounting holes, in which the galvanometer fixing shaft is positioned. This utility model has a simple and reliable structure, effectively ensuring the stability and adjustability of the confocal microendoscopic, and is easy to use in production practice.

Description

Technical Field

[0001] This utility model belongs to the field of confocal microendoscopic imaging and detection technology, specifically a two-dimensional scanning galvanometer fixing and adjustment mechanism. Background Technology

[0002] Confocal microendoscopy is a high-precision device. Even the slightest error in the precision of its installation structure or components can lead to significant discrepancies. The two-dimensional scanning galvanometer (GG) requires fixation and adjustment during installation, commissioning, and periodic calibration. Currently, confocal microendoscopy uses mounting holes in the base to house the GG's fixing shaft, secured with screws. This design, where the screws contact the GG's fixing shaft, introduces significant uncertainty for the micrometer-level optical transmission components of the confocal microendoscopy system. This design does not meet practical production requirements and is difficult to use in real-world manufacturing. Utility Model Content

[0003] The purpose of this invention is to provide a fixing and adjustment mechanism for a two-dimensional scanning galvanometer, aiming to solve at least one of the aforementioned technical problems.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a fixing and adjustment mechanism for a two-dimensional scanning galvanometer, including a base one (21) and a base two (22) fixedly mounted on a base (23), and a positioning seat one (11) and a positioning seat two (12) respectively fixedly mounted on the base one (21) and the base two (22) by screws (5). The base one (21) is provided with an arc-shaped groove one (211) through it, the positioning seat one (11) is provided with an arc-shaped groove two (111) through it, and the base two... (22) has a through arc-shaped groove three (221) and a through arc-shaped groove four (121) on the positioning seat two (12); the arc-shaped groove one and the arc-shaped groove two cooperate to form a mounting hole one (31), the arc-shaped groove three and the arc-shaped groove four cooperate to form a mounting hole two (32), the distance from the mounting hole one to the base (23) is different from the distance from the mounting hole two to the base (23), and a first galvanometer (41) and a second galvanometer (42) are respectively provided in the mounting hole one (31) and the mounting hole two (32).

[0005] Furthermore, the first galvanometer (41) includes a first fixed shaft (411) and a first mirror element (412), and the second galvanometer (42) includes a second fixed shaft (421) and a second mirror element (422). The first fixed shaft (411) and the second fixed shaft (421) are respectively fastened in the first mounting hole (31) and the second mounting hole (32).

[0006] Furthermore, a sleeve (122) or a bearing bush is provided in the first mounting hole (31) and / or the second mounting hole (32), and the first fixed shaft (411) and the second fixed shaft (421) are respectively provided in the sleeve (122) or the bearing bush in the first mounting hole (31) and the second mounting hole (32).

[0007] Furthermore, the mounting hole one (31) and mounting hole two (32) are the same size.

[0008] Furthermore, the screw (5) is disposed on both sides of the mounting hole one (31) and the mounting hole two (32).

[0009] Furthermore, when the positioning seat one (11) and the base one (21) are engaged, the mating surface of the positioning seat one (11) near the mirror part one (412) is aligned with the mating surface of the base one (21) near the mirror part one (412).

[0010] Furthermore, when the positioning seat 2 (12) and the base 2 (22) are engaged, the mating surface of the positioning seat 2 (12) near the mirror part 2 (422) is aligned with the mating surface of the base 2 (22) near the mirror part 2 (422).

[0011] Furthermore, an elastic element is provided at the mating surface of the first base (21) and the first positioning seat (11), and / or an elastic element is provided at the mating surface of the second base (22) and the second positioning seat (12), wherein the elastic element is an elastic washer or an elastic block.

[0012] Furthermore, the first base (21) includes a fixed seat (213) fixedly mounted on the base (23) and a movable seat (212) fixedly connected to the fixed seat (213) by a lifting limit screw (7). The second base (22) includes a fixed seat (223) fixedly mounted on the base (23) and a movable seat (222) fixedly connected to the fixed seat (223) by a lifting limit screw (7). Adjusting shims (6) are provided between the movable seat (212) and the fixed seat (213) and between the movable seat (222) and the fixed seat (223). The adjusting shims (6) are sleeved on the lifting limit screw (7).

[0013] Furthermore, the fixed seat one (213) and the fixed seat two (223) are provided with rectangular bosses (8), and the movable seat one (212) and the movable seat two (222) are respectively provided with rectangular grooves that cooperate with the bosses (8).

[0014] The fixing and adjustment mechanism of the two-dimensional scanning galvanometer of this utility model adopts a detachable and fastened connection between the positioning seat and the base. Corresponding arc-shaped grooves are set on the positioning seat and the base respectively to form a mounting hole. The fixing shaft of the galvanometer is set in the mounting hole. The structure of this utility model is simple and reliable, effectively ensuring the stability and adjustability of the confocal micro-endoscope, and is easy to use in production practice. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a structure for fixing and adjusting the two-dimensional scanning galvanometer of this application;

[0016] Figure 2 This is another structural schematic diagram of the fixing and adjustment mechanism of the two-dimensional scanning galvanometer of this application.

[0017] Figure 3 yes Figure 2 Schematic diagram of the lower half of the structure;

[0018] Figure 4 yes Figure 3 A longitudinal sectional view of the elastic block when it is placed horizontally.

[0019] Figure 5 Another structural schematic diagram of the fixing and adjustment mechanism of the two-dimensional scanning galvanometer in this application.

[0020] Figure 6 yes Figure 5 Schematic diagram of the adjusting shim and boss structure;

[0021] Figure 7 yes Figure 5 Another structural diagram of the adjusting shim and boss.

[0022] In the diagram: 11. Positioning seat one; 111. Arc-shaped groove two; 12. Positioning seat two; 121. Arc-shaped groove four; 122. Sleeve; 21. Base one; 211. Arc-shaped groove one; 212. Movable seat one; 213. Fixed seat one; 22. Base two; 221. Arc-shaped groove three; 222. Movable seat two; 223. Fixed seat two; 23. Base; 31. Mounting hole one; 32. Mounting hole two; 33. Elastic block; 41. First galvanometer; 411. Fixed shaft one; 412. Mirror component one; 42. Second galvanometer; 421. Fixed shaft two; 422. Mirror component two; 5. Screw; 6. Adjusting shim; 7. Lifting limit screw; 8. Boss. Detailed Implementation

[0023] 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 a part of the embodiments of the present utility model, and not all of them. 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. At the same time, it should be understood that the specific embodiments described herein are merely used to explain the present utility model and are not intended to limit the present utility model.

[0024] Example 1

[0025] like Figure 1 As shown, this utility model provides a fixing and adjustment mechanism for a two-dimensional scanning galvanometer, which includes a positioning seat and a base. The base includes a base 23, a base one 21 and a base two 22 fixedly mounted on the base 23. In some embodiments, the base one 21, the base two 22, and the base 23 can be an integral structure. The base 23 is fixed to the base plate of the confocal microendoscopy main unit by bolts. The positioning seat includes a positioning seat one 11 and a positioning seat two 12, which are respectively fixedly mounted on the base one 21 and the base two 22 by screws 5.

[0026] An arc-shaped groove 211 is provided through the base 21; an arc-shaped groove 111 is provided through the positioning seat 11; an arc-shaped groove 221 is provided through the base 22; and an arc-shaped groove 121 is provided through the positioning seat 22. The arc-shaped grooves 1 and 2 fit together to form a mounting hole 31, and the arc-shaped grooves 3 and 4 fit together to form a mounting hole 32. The distance from the mounting hole 31 to the base 23 is not... The distance from the second mounting hole 32 to the base 23 is the same. A first galvanometer 41 and a second galvanometer 42 are rotatably disposed in the first mounting hole 31 and the second mounting hole 32, respectively. The first galvanometer 41 includes a first fixed shaft 411, and the second galvanometer 42 includes a second fixed shaft 421. The first fixed shaft 411 and the second fixed shaft 421 are respectively fastened in the first mounting hole 31 and the second mounting hole 32. Screws 5 are disposed on both sides of the first mounting hole 31 and the second mounting hole 32. Preferably, the first mounting hole 31 and the second mounting hole 32 are the same size, thus simplifying the manufacturing process. Since the two polarizers of the two-dimensional scanning galvanometer have different axis diameters, generally, the axis diameter of the second fixed axis 421 is smaller than that of the first fixed axis 411. When the diameters of the first mounting hole 31 and the second mounting hole 32 are the same, a sleeve 122 is set in the second mounting hole 32. The first fixed axis 411 is set in the first mounting hole 31, and the second fixed axis 421 is set in the sleeve 122 in the second mounting hole 32. Since the diameters of the first mounting hole 31 and the second mounting hole are the same, but the diameter of the first fixed axis 411 is smaller than that of the second fixed axis 421, a sleeve 122 is set in the mounting hole 32 and the fixed axis 421 to ensure stable installation. The sleeve 122 can be a copper sleeve or a combination of two copper bearings. The diameters of the third arc-shaped groove 221 and the fourth arc-shaped groove 121 are equal to the outer diameter of the copper sleeve.

[0027] When the positioning seat mates with the base, the mating surfaces of the positioning seat near the mirror element and the base near the mirror element are aligned. Specifically: when the positioning seat 11 mates with the base 21, the mating surfaces of the positioning seat 21 near the mirror element 412 are aligned with the mating surfaces of the base 1 near the mirror element 412; when the positioning seat 22 mates with the base 22, the mating surfaces of the positioning seat 22 near the mirror element 422 are aligned with the mating surfaces of the base 22 near the mirror element 422. This ensures a more stable structure for the galvanometer of this application during installation.

[0028] Of course, in some other embodiments, when the diameter of the fixed shaft 411 is smaller than that of the mounting hole 31, a sleeve or bearing can also be provided in the mounting hole 31, and the fixed shaft 411 is disposed in the sleeve in the mounting hole 31. Since this application involves precision instruments, providing a sleeve in the mounting hole (including mounting hole 31 and / or mounting hole 32) can ensure stable installation. The sleeve can be a copper sleeve or a combination of two copper bearings, and the diameters of the arc-shaped groove 1, arc-shaped groove 2, arc-shaped groove 3, and arc-shaped groove 4 are respectively equal to the outer diameter of the corresponding copper sleeve.

[0029] Example 2

[0030] In another embodiment, such as Figure 2 , 3 As shown, based on the above embodiment, furthermore, an elastic element is provided at the mating surface of the base 1 21, base 22 and positioning seat 11, positioning seat 2 12. The elastic element can be an elastic washer or an elastic block 33. The elastic block 33 is wavy, and a longitudinal cross-sectional structural diagram of the elastic block 33 is shown in the figure. Figure 4 As shown, it is a plate with a wavy shape. The elastic element is made of rubber, elastic polyurethane, elastic plastic, or spring steel. Specifically, an elastic block 33 is provided at the mating surface of the base 21 and the positioning seat 11, and / or an elastic block 33 is provided at the mating surface of the base 22 and the positioning seat 12, as shown. Figure 4 As shown, the elastic block 33 is wavy in the horizontal direction, and a hole is provided in the middle of the elastic block for the screw 5 to pass through. Under the preload of the elastic block, the connection of the screw 5 is more stable.

[0031] The arc height of the bearing bush is slightly smaller than the radius of the fixed shaft 411, and the sum of the arc heights of the first arc groove 211 and the second arc groove 111 and the horizontal height of the elastic block 33 is slightly smaller than the diameter of the fixed shaft 411. In this way, the fixed shaft 411 can be easily placed in the mounting hole 31, with sufficient clamping allowance during tightening, thus making installation of this application more convenient.

[0032] Example 3

[0033] like Figure 5As shown, based on Embodiment 1 or / and Embodiment 2, the base 1 21 further includes a fixed seat 213 fixedly mounted on the base 23 and a movable seat 212 fixedly connected to the fixed seat 213 via a lifting limit screw 7. The base 22 includes a fixed seat 223 fixedly mounted on the base 23 and a movable seat 222 fixedly connected to the fixed seat 223 via a lifting limit screw 7. Adjusting shims 6 are provided between the movable seat 212 and the fixed seat 213, and between the movable seat 222 and the fixed seat 223. The adjusting shims 6 are steel plates of known thickness. The adjusting shims 6 are sleeved on the lifting limit screw 7. The adjusting shims 6 can be one piece or multiple pieces. Multiple pieces are composed of a series of shims of the same or different thicknesses to facilitate height adjustment. The thickness of each piece is between 0.1-0.4 mm.

[0034] The adjusting shim 6 is sleeved on the lifting limit screw 7. When there are multiple adjusting shims 6, the lifting limit screw 7 is a lifting limit bolt, and multiple adjusting shims 6 are sleeved on the lifting limit bolt. In this way, the height of the base can be adjusted by increasing or decreasing the number of adjusting shims 6, thereby adjusting the height of the galvanometer.

[0035] Furthermore, such as Figure 5 As shown in this embodiment, rectangular bosses 8 are provided on the first fixed seat 213 and the second fixed seat 223, and rectangular grooves that mate with the bosses 8 are provided on the first movable seat 212 and the second movable seat 222. After assembly, the bosses 8 are embedded in the rectangular grooves, and the adjusting shims 6 are respectively provided on both sides of the bosses 8 (e.g., Figure 6 (As shown). Of course, the adjusting shim 6 can also be a thin sheet with a notch in the middle, and the boss 8 is embedded in the notch (as shown). Figure 7 (As shown). The boss can provide stable guidance, ensuring the stability of the base.

[0036] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fixing and adjustment mechanism for a two-dimensional scanning galvanometer, characterized in that: The system includes a base 1 (21) and a base 2 (22) fixedly mounted on a base (23), and a positioning seat 1 (11) and a positioning seat 2 (12) fixedly mounted on the base 1 (21) and base 2 (22) respectively by screws (5). The base 1 (21) has an arc-shaped groove 1 (211) through it, the positioning seat 1 (11) has an arc-shaped groove 2 (111) through it, and the base 2 (22) has an arc-shaped groove 3 (221) through it. The positioning seat 2 (12) is provided with an arc-shaped groove 4 (121) through it; the arc-shaped groove 1 and the arc-shaped groove 2 are fitted together to form a mounting hole 1 (31), and the arc-shaped groove 3 and the arc-shaped groove 4 are fitted together to form a mounting hole 2 (32). The distance from the mounting hole 1 to the base (23) is different from the distance from the mounting hole 2 to the base (23). The mounting hole 1 (31) and the mounting hole 2 (32) are respectively provided with a first galvanometer (41) and a second galvanometer (42).

2. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 1, characterized in that: The first galvanometer (41) includes a fixed shaft (411) and a mirror element (412), and the second galvanometer (42) includes a fixed shaft (421) and a mirror element (422). The fixed shaft (411) and the fixed shaft (421) are respectively fastened in the mounting hole (31) and the mounting hole (32).

3. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 2, characterized in that: A sleeve (122) or a bearing bush is also provided in the first mounting hole (31) and / or the second mounting hole (32), and the first fixed shaft (411) and the second fixed shaft (421) are respectively provided in the sleeve (122) or the bearing bush in the first mounting hole (31) and the second mounting hole (32).

4. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 3, characterized in that: The mounting holes 1 (31) and 2 (32) are the same size.

5. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 1, characterized in that: The screw (5) is disposed on both sides of the mounting hole one (31) and the mounting hole two (32).

6. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 1, characterized in that: When the positioning seat (11) and the base (21) are engaged, the mating surface of the positioning seat (11) near the mirror (412) is aligned with the mating surface of the base (21) near the mirror (412).

7. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 1, characterized in that: When the positioning seat 2 (12) and the base 2 (22) are engaged, the mating surface of the positioning seat 2 (12) near the mirror part 2 (422) is aligned with the mating surface of the base 2 (22) near the mirror part 2 (422).

8. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 1, characterized in that: An elastic element is provided at the mating surface of the base one (21) and the positioning seat one (11), and / or an elastic element is provided at the mating surface of the base two (22) and the positioning seat two (12), wherein the elastic element is an elastic washer or an elastic block.

9. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 1, characterized in that: The first base (21) includes a fixed seat (213) fixedly mounted on the base (23) and a movable seat (212) fixedly connected to the fixed seat (213) by a lifting limit screw (7). The second base (22) includes a fixed seat (223) fixedly mounted on the base (23) and a movable seat (222) fixedly connected to the fixed seat (223) by a lifting limit screw (7). Adjusting shims (6) are provided between the movable seat (212) and the fixed seat (213) and between the movable seat (222) and the fixed seat (223). The adjusting shims (6) are sleeved on the lifting limit screw (7).

10. The fixing and adjustment mechanism for the two-dimensional scanning galvanometer according to claim 9, characterized in that: The fixed base one (213) and fixed base two (223) are provided with rectangular bosses (8), and the movable base one (212) and movable base two (222) are respectively provided with rectangular grooves that cooperate with the bosses (8).

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