A stereomicroscope lens positioner and method of operation

Abstract

The application discloses a stereoscopic microscope lens positioner, belongs to the technical field of microscopes, and solves the problem of inaccurate homing positioning of a stereoscopic microscope lens. The application discloses a stereoscopic microscope lens positioner, belongs to the technical field of microscopes, and solves the problem of inaccurate homing positioning of a stereoscopic microscope lens. It comprises a base, a positioning column, a spring and a U-shaped handle, one end of the positioning column away from a swing frame is further provided with a long strip-shaped sliding groove extending in the up-down direction, the base is provided with an arc-shaped sliding groove, the U-shaped handle is arranged on the periphery of the base, the U-shaped handle is rotationally connected with the base, the connecting position of the U-shaped handle and the base is located at the center position of the arc-shaped sliding groove, the U-shaped handle is fixed with a pull rod, and the pull rod penetrates through the arc-shaped sliding groove and the long strip-shaped sliding groove. The stereoscopic microscope lens positioner can meet the swing requirement of the lens, accurately homing the position of the lens, and control the rotation angle accurately when the lens is started to rotate next time.

Description

Technical Field

[0001] This invention relates to the field of microscopy, and more specifically, to a stereomicroscope lens locator and its operating method. 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 control the lens's oscillation via a worm gear mechanism, utilizing the worm gear's self-locking action to position the lens. However, in practical use, because the oscillation is driven by a worm gear, the lens is difficult to return precisely to the zero position, hindering accurate control of the next oscillation.

[0005] Therefore, there is an urgent need to develop and design a stereomicroscope lens locator and its operation method 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 stereo microscope lens positioner that can meet the lens swing requirements while accurately zeroing the lens position, so as to facilitate precise control and adjustment of the rotation angle when starting the rotation next time.

[0007] The second objective of this invention is to provide a method for operating a stereomicroscope lens locator, which is very convenient to use.

[0008] To achieve the aforementioned objective, this invention provides a stereomicroscope lens positioner, comprising a base, a positioning post, a spring, and a U-shaped handle. The base is fixed to the U-shaped frame of the stereomicroscope. The positioning post is slidably installed within the base along the swing frame direction of the stereomicroscope. 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 within the base, and the other end of the spring is connected to the base. An elongated groove extending vertically is also provided at the end of the positioning post away from the swing frame. 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 of the arc-shaped groove. A pull rod is fixed to the U-shaped handle, and the pull rod passes through the arc-shaped groove and the elongated groove.

[0009] As a further improvement, the base is provided with a through circular groove, the positioning post is slidably installed in the circular groove, one end of the base is provided with a slot communicating with the circular groove, the slot is a cavity that is small at both ends and large in the middle, the connecting plate is slidably installed in the slot, and spring grooves are provided on both the upper and lower sides of the circular groove, the spring is slidably installed in the spring groove, and the other end of the spring is connected to the bottom of the spring groove.

[0010] Furthermore, one end of the base is detachably provided with a cover plate that seals the slot and the circular slide.

[0011] Furthermore, a fixing bracket is provided on both the upper and lower sides of the connection between the U-shaped handle and the base, and a handle knob is fitted on the two fixing brackets. The handle knob is connected to the fixing bracket by screws.

[0012] Furthermore, one end of the base is provided with a pair of L-shaped seats, both of which overlap the top of the U-shaped frame, and both sides of each L-shaped seat are connected to the U-shaped frame by screws.

[0013] Furthermore, the end of the positioning column near the swing frame is a spherical structure, and correspondingly, the swing frame is provided with an arc-shaped groove.

[0014] Furthermore, the positioning post includes a fixed section and a movable section, and the fixed section and the movable section are threadedly connected.

[0015] To achieve the second objective mentioned above, the present invention provides a method for operating a stereomicroscope lens locator, the method being:

[0016] When it is necessary to swing the lens, swing the U-shaped handle away from the swing frame until the U-shaped handle is placed horizontally. During this process, the U-shaped handle pushes the positioning post away from the swing frame through the pull rod, so that the positioning post is separated from the swing frame and the limit on the swing frame is released. At this time, the spring is stretched and stores energy. When the lens is not needed to be swung, after the lens swing returns to zero, swing the U-shaped handle along the direction of the swing frame until the U-shaped handle is placed vertically. During this process, the U-shaped handle pushes the positioning pin towards the swing frame through the pull rod, so that the positioning pin contacts the swing frame to form a limit. At this time, the spring returns to its initial state.

[0017] Furthermore, the U-shaped handle is also equipped with a handle knob, and the U-shaped handle is swung by rotating the handle knob.

[0018] Furthermore, the swing frame is provided with an arc-shaped groove, and the positioning post contacts the swing frame to form a limit by inserting the positioning post into the arc-shaped groove.

[0019] Beneficial effects Compared with the prior art, the advantages of this invention are as follows: 1. The stereomicroscope lens positioner of the present invention, by controlling the extension and retraction of the positioning column to break free from the restriction of the swing frame, can meet the lens swing requirements while accurately zeroing the lens position, facilitating precise control and adjustment of the rotation angle when starting the rotation again.

[0020] 2. The stereomicroscope lens positioner of the present invention uses a U-shaped handle to drive the pull rod to push the positioning column to extend and retract, and with the elastic force of the spring, the positioning column can be automatically locked in the state of restricting or releasing the swing frame, without the need for electrical control, and has a longer service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure when the present invention is applied; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A with the base and cover removed; Figure 3 This is an enlarged schematic diagram of the U-shaped handle structure in this invention; Figure 4 This is an enlarged schematic diagram of the fixed segment in this invention; Figure 5 This is an enlarged schematic diagram of the base structure in this invention.

[0022] Among them: 3-lens, 15-U-shaped bracket, 18-swing bracket, 19-swing shaft, 27-base, 271-circular slide, 272-slot, 273-spring slot, 28-positioning post, 281-fixed section, 282-moving section, 29-spring, 30-U-shaped handle, 31-connecting plate, 32-long strip slide, 33-arc slide, 34-pull rod, 35-cover plate, 36-fixed bracket, 37-handle knob, 38-arc groove, 39-L-shaped base. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0024] See Figure 1-5 As shown, a stereomicroscope lens positioner according to the present invention includes a base 27, a positioning post 28, a spring 29, and a U-shaped handle 30. The base 27 is fixed to the U-shaped frame 15 of the stereomicroscope. The positioning post 28 is slidably installed within the base 27 along the direction of the stereomicroscope's swing frame 18. A connecting plate 31 is fixed to 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 within the base 27, and its other end is connected to the base 27. A long, narrow groove 32 extending vertically is also provided at the end of the positioning post 28 away from the swing frame 18. An arc-shaped groove 33 is formed 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 of the arc-shaped groove 33. A pull rod 34 is fixed on the U-shaped handle 30, and the pull rod 34 passes through the arc-shaped slide groove 33 and the long strip slide groove 32.

[0025] The stereomicroscope lens positioner of the present invention uses a U-shaped handle 30 to drive the pull rod 34 to push the positioning post 28 to extend and retract, and with the elastic force of the spring 29, the positioning post 28 can be automatically locked in the state of restricting or releasing the swing frame 18, without the need for electrical control, and has a longer service life.

[0026] Preferably, a through circular groove 271 is provided in the base 27, in which the positioning post 28 is slidably installed, facilitating the installation of the positioning post 28. A slot 272 communicating with the circular groove 271 is provided at one end of the base 27. The slot 272 is a cavity that is small at both ends and large in the middle. The corresponding connecting plate 31 also has a structure that is small at both ends and large in the middle, facilitating the installation of the connecting plate 31 and the spring 29. The connecting plate 31 is slidably installed in the slot 272 to prevent the positioning post 28 from rotating. Spring slots 273 are provided on both the upper and lower sides of the circular groove 271. The spring 29 is slidably installed in the spring slots 273, facilitating the installation of the spring 29. The other end of the spring 29 is connected to the bottom of the spring slot 273, so that the spring 29 is stretched when the positioning post 28 moves away from the swing frame 18.

[0027] Preferably, a cover plate 35 is detachably provided at one end of the base 27 to seal the slot 272 and the circular slide groove 271, which serves to protect the connecting plate 31 and facilitate disassembly and maintenance.

[0028] 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.

[0029] Preferably, a pair of L-shaped seats 39 are provided at one end of the base 27. The pair of L-shaped seats 39 overlap the top of the U-shaped frame 15, and the two sides of each L-shaped seat 39 are connected to the U-shaped frame 15 by screws, so as to realize the installation and fixation of the base 27, and the two-dimensional fastening effectively improves the installation stability.

[0030] 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.

[0031] 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.

[0032] This embodiment also provides a method for operating a stereomicroscope lens locator, the method being: When it is necessary to swing the lens 3, swing the U-shaped handle 30 away from the swing frame 18 until the U-shaped handle 30 is placed horizontally. During this process, the U-shaped handle 30 pushes the positioning post 28 away from the swing frame 18 through the pull rod 34, so that the positioning post 28 is separated from the swing frame 18 and the limitation on the swing frame 18 is released. At this time, the spring 29 is stretched and stores energy. When the lens 3 is not needed to swing, after the lens 3 swings to zero, swing the U-shaped handle 30 along the swing frame 18 until the U-shaped handle 30 is placed vertically. During this process, the U-shaped handle 30 pushes the positioning post 28 to move closer to the swing frame 18 through the pull rod 34, so that the positioning post 28 contacts the swing frame 18 to form a limit. At this time, the spring 29 returns to its initial state.

[0033] Preferably, the U-shaped handle 30 is also provided with a handle knob 37. Specifically, the U-shaped handle 30 is swung by rotating the handle knob 37, making operation more convenient.

[0034] Preferably, the swing frame 18 is provided with an arc-shaped slot 38. Specifically, the positioning post 28 contacts the swing frame 18 to form a limit, which is formed by inserting the positioning post 28 into the arc-shaped slot 38.

[0035] The stereomicroscope lens positioner of the present invention, by controlling the extension and retraction of the positioning post 28 to release the restriction on the swing frame 18, can meet the lens swing requirements while accurately zeroing the position of the lens 3, which facilitates precise control and adjustment of the rotation angle when starting the rotation again.

[0036] 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 stereomicroscope lens locator, characterized in that, The device 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) of the stereomicroscope. The positioning post (28) is slidably installed inside the base (27) along the direction of the swing frame (18) of the stereomicroscope. 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 inside the base (27), and the other end of the spring (29) is connected to the base (27). The end of the position post (28) away from the swing frame (18) is also provided with a long strip groove (32) extending in the vertical direction. 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) is set through the arc groove (33) and the long strip groove (32).

2. The stereomicroscope lens locator according to claim 1, characterized in that, The base (27) is provided with a through circular groove (271), and the positioning post (28) is slidably installed in the circular groove (271). One end of the base (27) is provided with a slot (272) communicating with the circular groove (271). The slot (272) is a cavity that is small at both ends and large in the middle. The connecting plate (31) is slidably installed in the slot (272). The upper and lower sides of the circular groove (271) are provided with spring grooves (273). The spring (29) is slidably installed in the spring groove (273), and the other end of the spring (29) is connected to the bottom of the spring groove (273).

3. A stereomicroscope lens locator according to claim 2, characterized in that, One end of the base (27) is detachably provided with a cover plate (35) that seals the slot (272) and the circular slide (271).

4. A stereomicroscope lens locator according to claim 1, characterized in that, A fixing bracket (36) is provided on the upper and lower sides of the connection between the U-shaped handle (30) and the base (27). A handle knob (37) is fitted on the two fixing brackets (36). The handle knob (37) is connected to the fixing bracket (36) by screws.

5. A stereomicroscope lens locator according to claim 1, characterized in that, One end of the base (27) is provided with a pair of L-shaped seats (39), both of which overlap the top of the U-shaped frame (15), and both sides of each L-shaped seat (39) are connected to the U-shaped frame (15) by screws.

6. A stereomicroscope lens locator according to claim 1, characterized in that, The end of the positioning column (28) near the swing frame (18) is a spherical structure, and correspondingly, the swing frame (18) is provided with an arc-shaped groove (38).

7. A stereomicroscope lens locator according to any one of claims 1-6, characterized in that, The positioning post (28) includes a fixed section (281) and a movable section (282), and the fixed section (281) and the movable section (282) are threadedly connected.

8. A method of operating the stereomicroscope lens locator according to claim 1, characterized in that, The method is: When it is necessary to swing the lens (3), swing the U-shaped handle (30) away from the swing frame (18) until the U-shaped handle (30) is placed horizontally. During this process, the U-shaped handle (30) pushes the positioning column (28) away from the swing frame (18) through the pull rod (34), so that the positioning column (28) is separated from the swing frame (18), and the limit on the swing frame (18) is released. At this time, the spring (29) is stretched and stores energy. When the lens (3) is not needed to swing, after the lens (3) swings to zero, swing the U-shaped handle (30) along the swing frame (18) until the U-shaped handle (30) is placed vertically. During this process, the U-shaped handle (30) pushes the positioning column (28) to move closer to the swing frame (18) through the pull rod (34), so that the positioning column (28) contacts the swing frame (18) to form a limit. At this time, the spring (29) returns to its initial state.

9. The operating method according to claim 8, characterized in that, The U-shaped handle (30) is also provided with a handle knob (37), and the U-shaped handle (30) swings by rotating the handle knob (37).

10. The operating method according to claim 8, characterized in that, The swing frame (18) is provided with an arc-shaped slot (38). The positioning post (28) contacts the swing frame (18) to form a limit, which is formed by inserting the positioning post (28) into the arc-shaped slot (38).

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