Double-objective switching mechanism

Abstract

The utility model provides a double objective lens switching mechanism, comprising a mounting rack and an objective lens switching block, the objective lens switching block is rotatably connected with the mounting rack, the objective lens switching block rotates between a first angle position and a second angle position, and the objective lens switching block is provided with a first objective lens and a second objective lens; a driving motor is arranged on the mounting frame, a transmission mechanism is arranged between the driving motor and the objective lens switching block, and the objective lens switching block is driven by the driving motor to swing; a tension spring is arranged between the objective lens switching block and the mounting frame, and when the objective lens switching block is located at the first angle position or the second angle position, the tension spring generates torque on the objective lens switching block so that the objective lens switching block can stably stay at the first angle position or the second angle position. According to the utility model, the automatic and rapid switching of the objective lens can be realized through the driving motor and the transmission mechanism, so that the trouble of manual operation is saved, and the switching efficiency of the objective lens is improved.

Description

Technical Field

[0001] This utility model relates to the field of slice scanning technology, and in particular to a dual objective lens switching mechanism. Background Technology

[0002] In digital slide scanners, switching between low-magnification and high-magnification objectives is typically required to meet different magnification needs. Current technologies generally categorize this switching between low-magnification and high-magnification objectives into manual and automatic methods. Manual switching relies on manual operation, which is cumbersome and inefficient. Current automatic switching methods, on the other hand, require complex mechanisms and are costly.

[0003] Therefore, there is an urgent need to provide a dual-objective switching mechanism that is simple and reliable in structure and can automatically complete the switching task between low-magnification and high-magnification objectives. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a dual objective lens switching mechanism.

[0005] The purpose of this utility model is achieved through the following technical solution: a dual objective lens switching mechanism, including a mounting frame and an objective lens switching block, the objective lens switching block being rotatably connected to the mounting frame, the objective lens switching block rotating between a first angle position and a second angle position, the objective lens switching block being provided with a first objective lens and a second objective lens; a drive motor being provided on the mounting frame, a transmission mechanism being provided between the drive motor and the objective lens switching block, the drive motor driving the objective lens switching block to swing; a tension spring being provided between the objective lens switching block and the mounting frame, when the objective lens switching block is located at the first angle position or the second angle position, the tension spring generating a torque on the objective lens switching block to make the objective lens switching block stably stay at the first angle position or the second angle position.

[0006] Preferably, the mounting bracket is provided with two positioning plungers, and the objective lens switching block is provided with two positioning grooves, with the two positioning plungers corresponding one-to-one with the two positioning grooves; when the objective lens switching block is in the first angle position or the second angle position, one of the positioning plungers is inserted into the corresponding positioning groove.

[0007] Preferably, the transmission mechanism includes a transmission plate disposed on the objective lens switching block and a transmission rotor disposed on the output shaft of the drive motor. The transmission plate is provided with a plurality of ribs, and the transmission rotor is provided with a lever. When the drive motor rotates, it drives the lever to rotate. When the lever rotates, it moves the ribs on the transmission plate to make the objective lens switching block swing.

[0008] Preferably, the transmission plate is fan-shaped, and the reinforcing ribs are arranged on the outer arc side of the transmission plate.

[0009] Preferably, the mounting bracket is provided with a motor mounting block, and the drive motor is mounted on the motor mounting block.

[0010] Preferably, the objective lens switching block is provided with a rotary bearing, and the mounting bracket is provided with a fixed shaft. The objective lens switching block is rotatably connected to the fixed shaft on the mounting bracket through the rotary bearing.

[0011] Preferably, the mounting bracket is provided with a first spring connecting post, and the objective lens switching block is provided with a second spring connecting post, with the two ends of the tension spring connected to the first spring connecting post and the second spring connecting post respectively.

[0012] The beneficial effects of this utility model are:

[0013] 1. In this utility model, the automatic and rapid switching of objective lenses can be achieved by driving a motor and cooperating with a transmission mechanism, which eliminates the trouble of manual operation and improves the efficiency of objective lens switching.

[0014] 2. In this utility model, a tension spring is provided between the objective lens switching block and the mounting bracket. The tension spring generates a torque on the objective lens switching block, which enables the objective lens switching block to be stably maintained at the first angle position or the second angle position. This ensures the stability of the objective lens in use and reduces the shaking of the objective lens.

[0015] 3. Thanks to the tension spring, even if the drive motor of the objective lens is unexpectedly powered off while in use, the torque generated by the tension spring can keep the objective lens stably maintaining its current position, ensuring the normal operation of the scanning process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a bottom view of the present invention.

[0018] Figure 3 This is a front view of the present invention.

[0019] Figure 4 This is a schematic diagram of the objective lens switching transmission.

[0020] Figure 5 This is a schematic diagram showing the interaction between the transmission plate and the transmission rotor.

[0021] In the figure: 10, mounting bracket; 11, objective lens switching block; 12, motor mounting block; 13, transmission rotor; 13a, lever; 14, drive motor; 15, first objective lens; 16, second objective lens; 17, transmission plate; 17a, rib plate; 18, tension spring; 19, positioning plunger; 20, rotary bearing. Detailed Implementation

[0022] 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 some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0023] like Figures 1 to 5 As shown, a dual objective lens switching mechanism includes a mounting frame 10 and an objective lens switching block 11. The objective lens switching block 11 is rotatably connected to the mounting frame 10 and rotates between a first angle position and a second angle position. A first objective lens 15 and a second objective lens 16 are provided on the objective lens switching block 11. A drive motor 14 is provided on the mounting frame 10, and a transmission mechanism is provided between the drive motor 14 and the objective lens switching block 11. The drive motor 14 drives the objective lens switching block 11 to swing. A tension spring 18 is provided between the objective lens switching block 11 and the mounting frame 10. When the objective lens switching block 11 is located at the first angle position or the second angle position, the tension spring 18 generates a torque on the objective lens switching block 11 so that the objective lens switching block 11 is stably stopped at the first angle position or the second angle position.

[0024] In this invention, when using the first objective lens 15, the objective lens switching block 11 is located at the first angle position; when using the second objective lens 16, the objective lens switching block 11 is located at the second angle position. The angle state of the objective lens switching block 11 is switched by the drive motor 14, thereby realizing the switching of the objective lens. In this invention, the automatic and rapid switching of the objective lens can be realized by the drive motor 14 and the transmission mechanism, eliminating the trouble of manual operation and improving the efficiency of objective lens switching. Furthermore, in this invention, a tension spring 18 is provided between the objective lens switching block 11 and the mounting bracket 10. The tension spring 18 generates a torque on the objective lens switching block 11, which enables the objective lens switching block 11 to be stably maintained at the first angle position or the second angle position, thus ensuring the stability of the objective lens in use and reducing objective lens shaking. Moreover, thanks to the action of the tension spring 18, even if the drive motor 14 is accidentally de-energized during the use of the objective lens, the torque generated by the tension spring 18 can still stably maintain the current position of the objective lens, ensuring the normal operation of the scanning process.

[0025] The mounting bracket 10 is equipped with two positioning plungers 19, and the objective lens switching block 11 is equipped with two positioning grooves. The two positioning plungers 19 correspond one-to-one with the two positioning grooves. When the objective lens switching block 11 is in the first angle position or the second angle position, one of the positioning plungers 19 is inserted into the corresponding positioning groove. Through the cooperation between the positioning plungers 19 and the positioning grooves, the positioning accuracy of the objective lens switching block 11 is effectively improved.

[0026] Specifically, the transmission mechanism includes a transmission plate 17 mounted on the objective lens switching block 11 and a transmission rotor 13 mounted on the output shaft of the drive motor 14. The transmission plate 17 is provided with a plurality of ribs 17a, and the transmission rotor 13 is provided with a lever 13a. When the drive motor 14 rotates, it drives the lever 13a to rotate. When the lever 13a rotates, it moves the ribs 17a on the transmission plate 17 to make the objective lens switching block 11 swing.

[0027] An intermittent meshing mechanism is formed between the transmission rotor 13 and the transmission plate 17. Combined with the action of the tension spring 18, this allows for precise positioning and switching of the objective lens switching block 11. When switching the angular position of the objective lens switching block 11, the intermittent meshing mechanism allows for a certain range of rotational error in the drive motor 14 after it drives the objective lens switching block 11 to the first or second angular position, thus reducing the control precision requirements for the drive motor 14. If a traditional gear transmission mechanism were used to drive the objective lens switching block 11, higher control precision of the motor's rotation would be required; otherwise, even a slight over- or under-rotation of the motor would prevent the objective lens switching block 11 from accurately reaching the first or second angular position.

[0028] In this embodiment, the transmission plate 17 is fan-shaped, and the stiffeners 17a are disposed on the outer arc side of the transmission plate 17. The stiffeners 17a are arranged at equal intervals.

[0029] In order to install the drive motor 14, a motor mounting block 12 is provided on the mounting bracket 10, and the drive motor 14 is mounted on the motor mounting block 12.

[0030] In order to achieve a rotatable connection between the objective lens switching block 11 and the mounting bracket 10, a rotary bearing 20 is provided on the objective lens switching block 11 and a fixed shaft is provided on the mounting bracket 10. The objective lens switching block 11 is rotatably connected to the fixed shaft on the mounting bracket 10 through the rotary bearing 20.

[0031] The mounting bracket 10 is provided with a first spring connecting post, and the objective lens switching block 11 is provided with a second spring connecting post. The two ends of the tension spring 18 are respectively connected to the first spring connecting post and the second spring connecting post.

[0032] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A dual objective lens switching mechanism, characterized in that, The device includes a mounting frame and an objective lens switching block. The objective lens switching block is rotatably connected to the mounting frame and rotates between a first angle position and a second angle position. The objective lens switching block is equipped with a first objective lens and a second objective lens. The mounting frame is equipped with a drive motor, and a transmission mechanism is provided between the drive motor and the objective lens switching block to drive the objective lens switching block to swing. A tension spring is provided between the objective lens switching block and the mounting frame. When the objective lens switching block is located at the first angle position or the second angle position, the tension spring generates a torque on the objective lens switching block to make the objective lens switching block stably stay at the first angle position or the second angle position.

2. The dual objective lens switching mechanism according to claim 1, characterized in that, The mounting bracket is provided with two positioning plungers, and the objective lens switching block is provided with two positioning grooves. The two positioning plungers correspond one-to-one with the two positioning grooves. When the objective lens switching block is in the first angle position or the second angle position, one of the positioning plungers is inserted into the corresponding positioning groove.

3. The dual objective lens switching mechanism according to claim 1, characterized in that, The transmission mechanism includes a transmission plate mounted on the objective lens switching block and a transmission rotor mounted on the output shaft of the drive motor. The transmission plate is provided with several ribs, and the transmission rotor is provided with a lever. When the drive motor rotates, it drives the lever to rotate. When the lever rotates, it moves the ribs on the transmission plate, causing the objective lens switching block to swing.

4. The dual objective lens switching mechanism according to claim 3, characterized in that, The transmission plate is fan-shaped, and the reinforcing ribs are arranged on the outer arc side of the transmission plate.

5. The dual objective lens switching mechanism according to claim 1, characterized in that, The mounting bracket is equipped with a motor mounting block, and the drive motor is mounted on the motor mounting block.

6. The dual objective lens switching mechanism according to claim 1, characterized in that, The objective lens switching block is equipped with a rotary bearing, and the mounting bracket is equipped with a fixed shaft. The objective lens switching block is rotatably connected to the fixed shaft on the mounting bracket through the rotary bearing.

7. The dual objective lens switching mechanism according to claim 1, characterized in that, The mounting bracket is provided with a first spring connecting post, and the objective lens switching block is provided with a second spring connecting post. The two ends of the tension spring are respectively connected to the first spring connecting post and the second spring connecting post.

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