A new type of stereomicroscope

Abstract

The application discloses a new type of stereoscopic microscope, belongs to the technical field of microscopes, and solves the problems of inconvenient operation and difficult control of the rotation angle of the existing microscope manually adjusted object table. It comprises a base, an object table and a lens, the object table comprises a supporting plate, a fixing cylinder and a rotating disc, the supporting plate is fixed at the output end of a left-right translation mechanism, a plurality of supporting legs are fixed at the bottom outer edge of the fixing cylinder, each supporting leg is fixedly connected with the supporting plate through a screw, the rotating disc is rotatably sleeved at the top of the fixing cylinder, an installation column is arranged at the inner center of the fixing cylinder, a gear ring is arranged on the outer wall of the top of the installation column through a bearing, the rotating disc is connected with the top of the gear ring, a first motor is further arranged in the fixing cylinder, a gear wheel is connected with the output end of the first motor, and the gear wheel is connected with the gear ring in meshing mode. The stereoscopic microscope is convenient for adjusting the angle of the object sample to be detected, and the angle of the object to be detected is adjusted, and the disassembly, assembly and maintenance are very convenient.

Description

Technical Field

[0001] This invention relates to the field of microscopy, and more specifically, to a novel stereomicroscope. Background Technology

[0002] The optical structure of a stereomicroscope consists of a shared primary objective lens. After imaging the object, the two beams of light are separated by two sets of intermediate objectives—zoom lenses—and combined into a single field of view before being imaged through their respective eyepieces. It is widely used in the inspection of object surface quality, dimensions, and volume, and in conjunction with software for 3D reconstruction.

[0003] In existing stereomicroscopes, such as the applicant's earlier application, publication number CN 115061272 B, a fully automatic continuous zoom stereomicroscope mechanical structure is disclosed, belonging to the field of continuous zoom stereomicroscopes, solving the problem that existing continuous zoom stereomicroscopes are difficult to achieve fully automatic detection of objects at different angles. It includes a base, a stage, and a lens. One end of the base is equipped with a lifting mechanism, the output end of which is equipped with a rotating mechanism. The output end of the rotating mechanism is connected to a front-back translation mechanism, and the output end of the front-back translation mechanism is connected to a left-right translation mechanism. The stage is mounted on the output end of the left-right translation mechanism. The other end of the base is equipped with a swing mechanism that can swing in a vertical plane. The lens is mounted on the output end of the swing mechanism and is located above the stage. The fully automatic continuous zoom stereomicroscope mechanical structure of this invention facilitates the detection of objects at different positions, effectively reduces workload, and improves work efficiency.

[0004] The existing microscopes described above allow for coarse adjustment of the stage angle by loosening the locking screw, rotating the stage horizontally to a suitable angle, and then tightening the locking screw. This allows for adjustment of the angle of the object to be observed on the stage. However, this adjustment method is manual, which is inconvenient to operate, difficult to control the rotation accuracy, and also inconvenient to disassemble and maintain.

[0005] Therefore, there is an urgent need to develop and design a new type of stereomicroscope to solve the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to address the above-mentioned shortcomings of the prior art. The purpose of the present invention is to provide a novel stereomicroscope that facilitates the adjustment of the angle of the sample to be tested, thereby adjusting the angle of the sample to be tested, while also being very convenient to disassemble and maintain.

[0007] To achieve the above objectives, the present invention provides a novel stereomicroscope, comprising a base, a stage, and a lens. One end of the base is provided with a lifting mechanism, the output end of which is connected to a front-to-back translation mechanism, and the output end of which is connected to a left-to-right translation mechanism. The stage is mounted on the output end of the left-to-right translation mechanism. The other end of the base is provided with a swing mechanism that can swing in a vertical plane. The lens is mounted on the output end of the swing mechanism and is located above the stage.

[0008] The platform includes a support plate, a fixed cylinder, and a rotating disk. The support plate is fixed to the output end of the left and right translation mechanism. Multiple support feet are fixed to the bottom outer edge of the fixed cylinder, and each support foot is fixedly connected to the support plate by screws. The rotating disk is rotatably sleeved on the top of the fixed cylinder. A mounting column is provided in the center of the fixed cylinder. A gear ring is installed on the top outer wall of the mounting column through a bearing. The rotating disk is connected to the top of the gear ring. A first motor is also provided inside the fixed cylinder. A gear is connected to the output end of the first motor, and the gear meshes with the gear ring.

[0009] As a further improvement, the rotating disk has a positioning groove at the top center for placing glass slides, and two symmetrically arranged buckle grooves are also provided on the rotating disk outside the positioning groove.

[0010] Furthermore, the output end of the lifting mechanism is connected to a connecting sleeve, and a connecting column is movably inserted into the connecting sleeve. The forward and backward translation mechanism is installed on the top of the connecting column, and a limiting rod is provided on the outer wall of the connecting column. Correspondingly, a limiting groove is opened on the inner wall of the connecting sleeve, and the limiting rod is slidably inserted into the limiting groove. A plurality of anti-screws are threadedly connected to the outer wall of the connecting sleeve, and the ends of the anti-screws are pressed against the outer wall of the connecting column.

[0011] Furthermore, the bottom of the base is provided with multiple support pads, and the bottom of the base is provided with a receiving groove. The bottom of the base can also be detachably fitted with a protective cover that covers the receiving groove. The protective cover is a mesh structure.

[0012] Furthermore, the swing mechanism includes a U-shaped frame, a second motor, a belt drive mechanism, and a swing frame. The second motor is fixedly installed on the lower part of the U-shaped frame, and the output end of the second motor is connected to one of the pulleys of the belt drive mechanism. The other pulley of the belt drive mechanism is connected to a swing shaft. The swing frame is fixedly installed on the swing shaft, and the lens is installed on the swing frame.

[0013] Furthermore, a support bolt is threaded onto the base below the second motor, with the top of the support bolt fitting against the bottom of the second motor.

[0014] Furthermore, a proximity switch sensing plate is fixedly installed at the end of the swing shaft, and a proximity switch is provided on the U-shaped frame. The proximity switch is located on the trajectory line of the proximity switch sensing plate as it swings with the swing shaft.

[0015] Furthermore, the U-shaped frame on the upper and lower sides of the swing shaft is provided with an upper locking mechanism and a lower locking mechanism for locking the swing frame in the vertical direction so that the lens is in a vertical state.

[0016] Furthermore, the lower locking mechanism includes a sleeve and a locking knob. The upper part of the sleeve has a circular hole, and the sleeve is fitted onto the swing shaft through the circular hole. The sleeve has an opening, and both ends of the opening extend to the inner wall of the circular hole and the bottom end face of the sleeve. The sleeve on one side of the opening is fixedly connected to the U-shaped frame, and the locking knob is movably inserted into the sleeve on the other side of the opening. One end of the locking knob is threadedly connected to the sleeve on one side of the opening, and the locking knob has a limiting step surface, which fits against the outer wall of the sleeve on the other side of the opening.

[0017] Furthermore, the upper locking mechanism includes a base, a positioning post, a spring, and a U-shaped handle. The base is fixed on the U-shaped frame. The positioning post is slidably installed in the base along the direction of the swing frame. A connecting plate is fixed to the end of the positioning post away from the swing frame. A spring is connected to both the upper and lower sides of the connecting plate. The spring is movably placed in the base, and the other end of the spring is connected to the base. The end of the positioning post away from the swing frame is also provided with a long strip-shaped groove extending in the vertical direction. An arc-shaped groove is provided on the base. The U-shaped handle is mounted on the periphery of the base and is rotatably connected to the base. The connection point between the U-shaped handle and the base is located at the center position corresponding to the arc-shaped groove. A pull rod is fixed on the U-shaped handle, and the pull rod passes through the arc-shaped groove and the long strip-shaped groove.

[0018] Beneficial effects Compared with the prior art, the advantages of this invention are as follows: 1. The stereomicroscope of the present invention, by placing the sample of the object to be tested in the rotating disk, controls the first motor to work during actual use. The first motor can drive the rotating disk to rotate through the gear ring, thereby driving the sample of the object to be tested to rotate, which makes it easy to adjust the angle of the object to be tested. At the same time, the fixed cylinder is detachably connected to the support plate through the support feet. The fixed cylinder and the rotating disk can be disassembled as a whole by loosening the screws corresponding to the support feet, which is very convenient for disassembly and maintenance.

[0019] 2. The stereomicroscope of the present invention, by setting an upper locking mechanism and a lower locking mechanism on the upper and lower sides of the swing shaft, when the lens does not need to be swung, after the swing frame swings to zero, the upper locking mechanism and the swing shaft are locked by the lower locking mechanism respectively. The two-point locking limit method greatly improves the locking performance, so that the lens can be stably in a vertical state, thereby ensuring the vertical accuracy of the lens. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one side of the invention; Figure 2 This is a schematic diagram of the structure on the other side of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A with the base and cover removed; Figure 4 This is an enlarged schematic diagram of the base structure in this invention; Figure 5 This is an enlarged schematic diagram of the stage structure in this invention; Figure 6 This is an enlarged schematic diagram of the stage structure in this invention without the rotating disk; Figure 7 This is an enlarged schematic diagram of the connecting sleeve structure in this invention; Figure 8 This is an enlarged schematic diagram of the connecting column structure in this invention; Figure 9 This is an enlarged schematic diagram of the locking knob in this invention; Figure 10 This is an enlarged schematic diagram of the jacket structure in this invention; Figure 11 This is an enlarged schematic diagram of the base structure in this invention; Figure 12 This is an enlarged schematic diagram of the U-shaped handle structure in this invention; Figure 13 This is an enlarged schematic diagram of the fixed segment in this invention.

[0021] Among them: 1-base, 2-platform, 201-support plate, 202-fixed cylinder, 203-rotating disk, 204-support foot, 205-mounting column, 206-gear ring, 207-first motor, 208-gear, 209-positioning groove, 200-slot, 3-lens, 4-lifting mechanism, 5-front and rear translation mechanism, 6-left and right translation mechanism, 7-glass slide, 8-connecting sleeve, 9-connecting column, 10-limiting rod, 11-limiting groove, 12-reverse screw, 13-support pad, 14-protective cover, 15-U-shaped frame, 16-the... 2. Motor, 17-Belt drive mechanism, 18-Swing frame, 19-Swing shaft, 20-Support bolt, 21-Proximity switch sensor plate, 22-Proximity switch, 23-Clip, 24-Locking knob, 25-Opening, 26-Limit step surface, 27-Base, 28-Positioning column, 281-Fixed section, 282-Moving section, 29-Spring, 30-U-shaped handle, 31-Connecting plate, 32-Long strip slide, 33-Arc-shaped slide, 34-Pull rod, 35-Cover plate, 36-Fixed latch, 37-Handle knob, 38-Arc-shaped slot. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0023] See Figure 1-13 As shown, this is a novel stereomicroscope of the present invention, comprising a base 1, a stage 2, and a lens 3. A lifting mechanism 4 is provided at one end of the base 1. A front-to-back translation mechanism 5 is connected to the output end of the lifting mechanism 4, and a left-to-right translation mechanism 6 is connected to the output end of the front-to-back translation mechanism 5. The stage 2 is mounted on the output end of the left-to-right translation mechanism 6, enabling adjustment of the stage 2's vertical, horizontal, and front-to-back positions. It should be noted that the lifting mechanism 4, front-to-back translation mechanism 5, and left-to-right translation mechanism 6 in this embodiment are the same as those disclosed in the prior art with publication number CN115061272B, and will not be described again here.

[0024] In this embodiment, a swing mechanism that can swing in a vertical plane is provided at the other end of the base 1. The lens 3 is installed at the output end of the swing mechanism and is located above the stage 2. The lens 3 can be adjusted to swing in the vertical direction relative to the stage 2, and the lens 3 can be switched to different positions.

[0025] In this embodiment, the stage 2 includes a support plate 201, a fixed cylinder 202, and a rotating disk 203. The support plate 201 is fixed to the output end of the left-right translation mechanism 6. Multiple support feet 204 are fixed to the bottom outer edge of the fixed cylinder 202, and each support foot 204 is fixedly connected to the support plate 201 by screws, enabling the fixed cylinder 202 to be detachably connected for easy disassembly and maintenance. The rotating disk 203 is rotatably mounted on the top of the fixed cylinder 202. Preferably, the outer wall of the top of the fixed cylinder 202 has an annular step, and the rotating disk 203 is mounted within the annular step, serving as an outer ring positioning element to ensure the rotational stability of the rotating disk 203. A mounting post 205 is located at the center of the fixed cylinder 202. The mounting post 205 has a hollow structure, and the center of the fixed cylinder 202 also has a light hole structure to facilitate the transmission of light. A gear ring 206 is mounted on the top outer wall of the mounting column 205 via a bearing. The rotating disk 203 is connected to the top of the gear ring 206. Specifically, the two can be connected by screws. A first motor 207 is also provided inside the fixed cylinder 202. A gear 208 is connected to the output end of the first motor 207. The gear 208 meshes with the gear ring 206, so that the first motor 207 drives the rotating disk 203 to rotate.

[0026] The stereomicroscope of the present invention, by placing the sample to be tested in the rotating disk 203, controls the first motor 207 to work during actual use. The first motor 207 drives the rotating disk 203 to rotate through the gear ring, thereby driving the sample to be tested to rotate, which facilitates the adjustment of the angle of the sample to be tested. Furthermore, the rotation mechanism of the rotating disk 203 is located at the output end of the front-to-back translation mechanism 5 and the left-to-right translation mechanism 6, making the control more convenient and the accuracy higher. At the same time, the fixed cylinder 202 is detachably connected to the support plate 201 through the support foot 204. By loosening the screws corresponding to the support foot 201, the fixed cylinder 202 and the rotating disk 203 can be disassembled as a whole, which is very convenient for disassembly, assembly and maintenance.

[0027] Preferably, a positioning groove 209 for placing a glass slide 7 is provided at the top center of the rotating disk 203, which facilitates the placement of the glass slide 7. When it is necessary to observe the sample of the object to be tested using a light source, the sample to be tested can be placed in the glass slide 7, and the glass slide 7 can then be placed in the positioning groove 209. The light source on the base 1 can be used to directly illuminate the glass slide 7 through the stage 2, which is more convenient to use. Two symmetrically arranged locking grooves 200 are also provided on the rotating disk 203 outside the positioning groove 209 to facilitate the picking and placing of the glass slide 7.

[0028] Preferably, the output end of the lifting mechanism 4 is connected to a connecting sleeve 8, and a connecting column 9 is movably inserted into the connecting sleeve 8. The front-to-back translation mechanism 5 is installed on the top of the connecting column 9. A limiting rod 10 is provided on the outer wall of the connecting column 9. Correspondingly, a limiting groove 11 is opened on the inner wall of the connecting sleeve 8. The limiting rod 10 is slidably inserted into the limiting groove 11, and multiple anti-screws 12 are threadedly connected to the outer wall of the connecting sleeve 8. The ends of the anti-screws 12 are pressed against the outer wall of the connecting column 9. In this embodiment, the lifting mechanism 4 and the front-to-back translation mechanism 5 are connected by the connecting column 9 inserted into the connecting sleeve 8, forming a detachable installation, which is convenient for disassembly and maintenance. Furthermore, the cooperation between the limiting rod 10 and the limiting groove 11 can ensure that the initial angle of the platform 2 is unique during installation.

[0029] Preferably, multiple support pads 13 are provided at the bottom of the base 1. The support pads 13 have a raised structure, which can raise the base 1 to facilitate heat dissipation of the circuit board and power supply. The bottom of the base 1 has a receiving groove for installing the circuit board and power supply. A protective cover 14 can also be detachably installed at the bottom of the base 1 to cover the receiving groove, which serves to protect the circuit board and power supply. The protective cover 14 has a mesh structure and serves to dissipate heat. In this embodiment, the circuit board and power supply are integrated and installed in the base 1, making the entire microscope structure more compact.

[0030] Preferably, the swing mechanism includes a U-shaped frame 15, a second motor 16, a belt drive mechanism 17, and a swing frame 18. The second motor 16 is fixedly mounted on the lower part of the U-shaped frame 15, and its output end is connected to one pulley of the belt drive mechanism 17. The other pulley of the belt drive mechanism 17 is connected to a swing shaft 19. The second motor 16 drives the swing shaft 19 to rotate via the belt drive mechanism 17. In other embodiments, the belt drive mechanism 17 can also be a gear drive mechanism or a chain drive mechanism. The swing frame 18 is fixedly mounted on the swing shaft 19, and the lens 3 is mounted on the swing frame 18. The rotation of the swing shaft 19 drives the swing frame 18 to rotate, thereby causing the lens 3 to swing.

[0031] Preferably, a support bolt 20 is threaded onto the base 1 below the second motor 16. The top of the support bolt 20 is attached to the bottom of the second motor 16, which serves to assist in supporting the second motor 16 and improve the installation stability of the second motor 16.

[0032] Preferably, a proximity switch sensing plate 21 is fixedly installed at the end of the swing shaft 19, and a proximity switch 22 is provided on the U-shaped frame 15. The proximity switch 22 is located on the travel trajectory line of the proximity switch sensing plate 21 as it swings with the swing shaft 19, and can detect in real time whether the lens 3 is within the set swing range.

[0033] Preferably, the U-shaped brackets 15 on the upper and lower sides of the swing shaft 19 are provided with an upper locking mechanism and a lower locking mechanism for locking the swing frame 18 in the vertical direction so that the lens 3 is in a vertical state. By providing upper and lower locking mechanisms on the upper and lower sides of the swing shaft 19, when the lens 3 does not need to be swung, after the swing frame 18 swings to zero, the upper and lower locking mechanisms lock the swing frame 18 and the swing shaft 19 respectively. The two-point locking and limiting method greatly improves the locking performance, so that the lens 3 can be stably in a vertical state, thereby ensuring the vertical accuracy of the lens.

[0034] Specifically, the lower locking mechanism includes a sleeve 23 and a locking knob 24. The sleeve 23 has a circular hole at its upper part and is fitted onto the swing shaft 19 through the circular hole. The sleeve 23 has an opening 25, the two ends of which extend to the inner wall of the circular hole and the bottom end face of the sleeve 23. The sleeve 23 on one side of the opening 25 is fixedly connected to the U-shaped frame 15, so that one side of the sleeve 23 is fixedly installed on the U-shaped frame 15. The locking knob 24 is movably inserted into the sleeve 23 on the other side of the opening 23. One end of the locking knob 24 is threadedly connected to the sleeve 23 on the side of the opening 25, and the locking knob 24 has a limiting step surface 26, which fits against the outer wall of the sleeve 23 on the other side of the opening 25. In practical applications, by tightening the locking knob 24, the end of the locking knob 24 enters one side of the clamp 23, while the limiting step surface 26 of the locking knob 24 presses against the other side of the clamp 23, causing the clamp 23 to move towards the opening 25. This allows the circular hole to clamp the swing shaft 19, preventing the swing shaft 19 from rotating relative to the clamp 23, thus locking the swing frame 18 and the lens 3. Conversely, loosening the locking knob 24 releases the swing frame 18 and the lens 3. Furthermore, to improve the stability of the locking knob 24, a horizontal plate can be provided on the side of the U-shaped frame 15, and the locking knob 24 can be movably inserted into the horizontal plate.

[0035] Specifically, the upper locking mechanism includes a base 27, a positioning post 28, a spring 29, and a U-shaped handle 30. The base 27 is fixed on the U-shaped frame 15. The positioning post 28 is slidably installed in the base 27 along the direction of the swing frame 18. A connecting plate 31 is fixed at the end of the positioning post 28 away from the swing frame 18. A spring 29 is connected to both the upper and lower sides of the connecting plate 31. The spring 29 is movably placed in the base 27, and the other end of the spring 29 is connected to the base 27. The end of the positioning post 28 away from the swing frame 18 is also provided with a long strip-shaped groove 32 extending in the vertical direction. An arc-shaped groove 33 is opened on the base 27. The U-shaped handle 30 is mounted on the periphery of the base 27 and is rotatably connected to the base 27. The connection point between the U-shaped handle 30 and the base 27 is located at the center position corresponding to the arc-shaped groove 33. A pull rod 34 is fixed on the U-shaped handle 30, and the pull rod 34 is set through the arc-shaped groove 33 and the long strip-shaped groove 32. The U-shaped handle 30 drives the pull rod 34 to push the positioning column 28 to extend and retract. With the elastic force of the spring 29, the positioning column 28 can be automatically locked in the state of restricting or releasing the swing frame 18. No electric control is required, and the service life is longer.

[0036] Preferably, a cover plate 35 is detachably provided at one end of the base 27 to protect the connecting plate 31 and facilitate disassembly and maintenance.

[0037] Preferably, a fixing bracket 36 is provided on both the upper and lower sides of the connection between the U-shaped handle 30 and the base 27. A handle knob 37 is fitted onto the two fixing brackets 36, and the handle knob 37 is connected to the fixing bracket 36 by screws. In actual operation, the U-shaped handle 30 can be rotated by turning the handle knob 37, making operation more convenient.

[0038] Preferably, the end of the positioning post 28 near the swing frame 18 is a spherical structure. Correspondingly, the swing frame 18 is provided with an arc-shaped groove 38. The end of the spherical positioning post 28 is more easily inserted into the arc-shaped groove 38 to form a limit.

[0039] Preferably, the positioning post 28 includes a fixed section 281 and a movable section 282, wherein the fixed section 281 and the movable section 282 are threadedly connected. In practical applications, the elastic restoring force of the spring 29 will weaken after prolonged use. At this time, the length of the positioning post 28 can be adjusted by rotating the movable section 282 to ensure that the positioning post 28 can be inserted into the arc-shaped slot 38 to form a limit.

[0040] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention, and these will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A novel stereomicroscope, comprising a base (1), a stage (2), and a lens (3), characterized in that, One end of the base (1) is provided with a lifting mechanism (4), the output end of the lifting mechanism (4) is connected to a front-to-back translation mechanism (5), the output end of the front-to-back translation mechanism (5) is connected to a left-to-right translation mechanism (6), the platform (2) is installed at the output end of the left-to-right translation mechanism (6), the other end of the base (1) is provided with a swing mechanism that can swing in a vertical plane, the lens (3) is installed at the output end of the swing mechanism, and the lens (3) is located above the platform (2); The platform (2) includes a support plate (201), a fixed cylinder (202), and a rotating disk (203). The support plate (201) is fixed to the output end of the left and right translation mechanism (6). The bottom outer edge of the fixed cylinder (202) is fixed with multiple support feet (204). Each support foot (204) is fixedly connected to the support plate (201) by screws. The rotating disk (203) is rotatably sleeved on the top of the fixed cylinder (202). The fixed cylinder (202) has an installation column (205) in the center. The top outer wall of the installation column (205) is fitted with a gear ring (206) through a bearing. The rotating disk (203) is connected to the top of the gear ring (206). The fixed cylinder (202) also has a first motor (207) inside. The output end of the first motor (207) is connected to a gear (208). The gear (208) meshes with the gear ring (206).

2. The novel stereomicroscope according to claim 1, characterized in that, The rotating disk (203) has a positioning groove (209) at the top center for placing a glass slide (7), and two symmetrically arranged buckle grooves (200) are also provided on the rotating disk (203) outside the positioning groove (209).

3. The novel stereomicroscope according to claim 1, characterized in that, The output end of the lifting mechanism (4) is connected to a connecting sleeve (8), and a connecting column (9) is movably inserted into the connecting sleeve (8). The forward and backward translation mechanism (5) is installed on the top of the connecting column (9). The outer wall of the connecting column (9) is provided with a limiting rod (10). Correspondingly, the inner wall of the connecting sleeve (8) is provided with a limiting groove (11). The limiting rod (10) is slidably inserted into the limiting groove (11). The outer wall of the connecting sleeve (8) is threaded with a plurality of anti-screws (12). The ends of the anti-screws (12) are pressed against the outer wall of the connecting column (9).

4. A novel stereomicroscope according to claim 1, characterized in that, The base (1) has multiple support pads (13) at its bottom, and the base (1) has a receiving groove at its bottom. The base (1) can also be detachably fitted with a protective cover (14) that covers the receiving groove. The protective cover (14) is a mesh structure.

5. A novel stereomicroscope according to any one of claims 1-4, characterized in that, The swing mechanism includes a U-shaped frame (15), a second motor (16), a belt drive mechanism (17), and a swing frame (18). The second motor (16) is fixedly installed on the lower part of the U-shaped frame (15), and the output end of the second motor (16) is connected to one of the pulleys of the belt drive mechanism (17). The other pulley of the belt drive mechanism (17) is connected to a swing shaft (19). The swing frame (18) is fixedly installed on the swing shaft (19), and the lens (3) is installed on the swing frame (18).

6. A novel stereomicroscope according to claim 5, characterized in that, A support bolt (20) is threaded onto the base (1) below the second motor (16), and the top of the support bolt (20) is attached to the bottom of the second motor (16).

7. A novel stereomicroscope according to claim 5, characterized in that, The swing shaft (19) is fixedly installed with a proximity switch sensing plate (21), and the U-shaped frame (15) is provided with a proximity switch (22). The proximity switch (22) is located on the trajectory line of the proximity switch sensing plate (21) swinging with the swing shaft (19).

8. A novel stereomicroscope according to claim 5, characterized in that, The upper and lower locking mechanisms are provided in the U-shaped frame (15) on the upper and lower sides of the swing shaft (19) to lock the swing frame (18) in the vertical direction so that the lens (3) is in a vertical state.

9. A novel stereomicroscope according to claim 8, characterized in that, The lower locking mechanism includes a sleeve (23) and a locking knob (24). The upper part of the sleeve (23) has a circular hole. The sleeve (23) is sleeved on the swing shaft (19) through the circular hole. The sleeve (23) has an opening (25). The two ends of the opening (25) extend to the inner wall of the circular hole and the bottom end face of the sleeve (23). The sleeve (23) on one side of the opening (25) is fixedly connected to the U-shaped frame (15). The locking knob (24) is movably inserted into the sleeve (23) on the other side of the opening (23). One end of the locking knob (24) is threadedly connected to the sleeve (23) on one side of the opening (25). The locking knob (24) has a limiting step surface (26). The limiting step surface (26) fits against the outer wall of the sleeve (23) on the other side of the opening (25).

10. A novel stereomicroscope according to claim 8, characterized in that, The upper locking mechanism includes a base (27), a positioning post (28), a spring (29), and a U-shaped handle (30). The base (27) is fixed on the U-shaped frame (15). The positioning post (28) is slidably installed in the base (27) along the direction of the swing frame (18). A connecting plate (31) is fixed to one end of the positioning post (28) away from the swing frame (18). A spring (29) is connected to both the upper and lower sides of the connecting plate (31). The spring (29) is movably placed in the base (27), and the other end of the spring (29) is connected to the base (27). The column (28) is also provided with a long strip groove (32) extending in the vertical direction at one end away from the swing frame (18). The base (27) is provided with an arc groove (33). The U-shaped handle (30) is mounted on the periphery of the base (27) and is rotatably connected to the base (27). The connection between the U-shaped handle (30) and the base (27) is located at the center of the arc groove (33). A pull rod (34) is fixed on the U-shaped handle (30). The pull rod (34) passes through the arc groove (33) and the long strip groove (32).

Images