Filter wheel control structure

Abstract

The utility model discloses a filter wheel control structure, which relates to the technical field of filter wheel control, and comprises a support frame and a driving motor, the driving motor is fixedly connected on the surface of the support frame, a driving gear is fixedly connected on an output shaft of the driving motor, and the output shaft of the driving gear is fixedly connected with a transmission shaft. A mounting frame is movably arranged on the supporting frame through a connecting shaft, teeth are fixedly arranged on the surface of the mounting frame, and the teeth are meshed with the driving gear; an optical filter is mounted in the mounting frame, a fixing frame for fixing the optical filter is mounted on the surface of the mounting frame, and a rotation stopping component for braking the mounting frame is arranged on the surface of the supporting frame, so that the problems that the optical filter is unstable in mounting, inconvenient to rotate and drive and difficult to accurately position are solved.

Description

Technical Field

[0001] This utility model relates to the field of filter wheel control technology, specifically a filter wheel control structure. Background Technology

[0002] The filter wheel is equipped with wavelength-selective filters. Filters are optical devices used to select the desired radiation band. The filter wheel can be driven by a stepper motor and reducer or manually. It is an important structure in modern optomechanical systems and is widely used in various optomechanical systems. It also has a wide range of applications in fields such as photography and videography, chemical analysis, medicine, manufacturing, environmental monitoring, aviation, and military.

[0003] In the existing technology, filter wheel devices are composed of a filter wheel disk and multiple filters. They are devices that can switch filters as needed. However, existing filter wheel devices have problems such as unstable filter installation, inconvenient rotation drive, and difficulty in precise positioning. Utility Model Content

[0004] This invention provides a filter wheel control structure to solve the problems of unstable filter installation, inconvenient rotation drive, and difficulty in precise positioning.

[0005] This utility model provides the following technical solution: a filter wheel control structure, including a support frame and a drive motor. The drive motor is fixedly connected to the surface of the support frame, and a drive gear is fixedly connected to the output shaft of the drive motor. A mounting frame is movably arranged on the support frame via a connecting shaft. Teeth are fixedly arranged on the surface of the mounting frame, and the teeth mesh with the drive gear. A filter is installed inside the mounting frame, and a fixing frame for fixing the filter is installed on the surface of the mounting frame. An anti-rotation component for braking the mounting frame is provided on the surface of the support frame.

[0006] In a preferred embodiment of this utility model, the connecting shaft is connected to the support frame via a connecting bearing, and a fixing member is fixedly connected to the end of the connecting shaft. The mounting frame is fixedly sleeved on the surface of the fixing member; the fixing frame is movably sleeved on the surface of the fixing member; and the mounting frame and the fixing frame are fixedly connected by fastening screws.

[0007] As a preferred embodiment of this utility model, the surface of the fixing member is provided with a slot, the surface of the fixing frame is fixedly connected with a slotting protrusion, the surface of the slotting protrusion is movably connected to the inner sidewall of the slotting groove, and the surface of the fixing member is threadedly connected with a threaded ring for fixing the fixing frame.

[0008] As a preferred embodiment of this utility model, the mounting bracket has a positioning protrusion fixedly connected inside, the surface of the filter is provided with a positioning groove, the positioning protrusion is movably connected with the positioning groove, and the mounting bracket is also provided with a clearance groove inside.

[0009] As a preferred embodiment of the present invention, the fixing frame includes a connecting frame and a ring-shaped component. The ring-shaped component is fixedly connected to the connecting frame by connecting screws. A plug-in block is fixedly connected to the surface of the ring-shaped component, and the surface of the plug-in block is movably connected to the inner sidewall of the clearance groove.

[0010] As a preferred technical solution of this utility model, the anti-rotation component includes an electric push rod, which is fixedly connected to the support frame. The output shaft of the electric push rod is fixedly connected to the trapezoidal block. A limiting groove is formed on the surface of the fixed frame. The inner sidewall of the limiting groove is movably connected to the surface of the trapezoidal block. The extension and retraction direction of the electric push rod coincides with the vertical line of the center of two adjacent filters.

[0011] As a preferred embodiment of this utility model, the anti-rotation component further includes a laser sensor, which is fixedly connected to the surface of the support frame. A reflector is fixedly connected to the surface of the mounting frame, and the number of reflectors is the same as the number of filters. The reflectors are located on the connecting line between the center of the filters and the center of the support frame.

[0012] Compared with the prior art, the present invention provides a filter wheel control structure, which has the following beneficial effects:

[0013] The filter wheel control structure features a drive motor securely mounted on the support frame surface, with its output shaft connected to a drive gear. The mounting frame is movably mounted on the support frame via a connecting shaft, and its surface teeth mesh with the drive gear to ensure efficient power transmission. The filter is installed inside the mounting frame and secured by surface brackets to ensure filter stability. Simultaneously, anti-rotation components on the support frame surface brake promptly after the mounting frame has rotated to its designated position, ensuring the filter is accurately positioned in its working state. Overall, this design guarantees the stability and precision of the filter wheel control structure's operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure at the connecting shaft of this utility model.

[0016] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the reflector structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the fixing frame structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the card slot protrusion of this utility model.

[0020] Figure 7 This is a schematic diagram of the support frame structure of this utility model.

[0021] In the diagram: 1. Support frame; 2. Drive motor; 3. Drive gear; 4. Connecting shaft; 5. Mounting bracket; 6. Gear; 7. Filter; 8. Fixing bracket; 801. Connecting bracket; 802. Ring assembly; 9. Fixing component; 10. Fastening screw; 11. Locking groove; 12. Locking protrusion; 13. Threaded ring; 14. Positioning protrusion; 15. Positioning groove; 16. Clearance groove; 17. Insertion block; 18. Electric push rod; 19. Trapezoidal block; 20. Limiting groove; 21. Laser sensor; 22. Reflector. 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. 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.

[0023] Please see Figures 1-7 This utility model discloses a filter wheel control structure, including a support frame 1 and a drive motor 2. The drive motor 2 is fixedly connected to the surface of the support frame 1. A drive gear 3 is fixedly connected to the output shaft of the drive motor 2. A mounting frame 5 is movably arranged on the support frame 1 through a connecting shaft 4. Teeth 6 are fixedly arranged on the surface of the mounting frame 5, and the teeth 6 mesh with the drive gear 3. A filter 7 is installed inside the mounting frame 5. A fixing frame 8 for fixing the filter 7 is installed on the surface of the mounting frame 5. An anti-rotation component for braking the mounting frame 5 is provided on the surface of the support frame 1.

[0024] Specifically, the connecting shaft 4 is connected to the support frame 1 through the connecting bearing, and the end of the connecting shaft 4 is fixedly connected to the fixing member 9. The mounting frame 5 is fixedly sleeved on the surface of the fixing member 9; the fixing frame 8 is movably sleeved on the surface of the fixing member 9; the mounting frame 5 and the fixing frame 8 are fixedly connected by fastening screws 10.

[0025] Specifically, the surface of the fastener 9 is provided with a slot 11, the surface of the fixing frame 8 is fixedly connected with a slot protrusion 12, the surface of the slot protrusion 12 is movably connected to the inner side wall of the slot 11, and the surface of the fastener 9 is threadedly connected with a threaded ring 13 for fixing the fixing frame 8.

[0026] Specifically, the mounting bracket 5 has a fixed internal connection with a positioning protrusion 14, and the surface of the filter 7 is provided with a positioning groove 15. The positioning protrusion 14 and the positioning groove 15 are movably connected. The mounting bracket 5 also has a clearance groove 16 inside.

[0027] In this embodiment, when installing the filter 7, an auxiliary clamping device can be used for installation. The clearance groove 16 is used to make way for the clamping device. At the same time, the locking protrusion 12 cooperates with the locking groove 11 to initially fix and limit the filter 7 to prevent shaking.

[0028] The positioning protrusion 14 and positioning groove 15 can facilitate the initial positioning of the mounting bracket 5. The threaded ring 13 and fastening screw 10 can be used for double fixation to prevent the mounting bracket 5 from falling off during use.

[0029] Specifically, the fixing frame 8 includes a connecting frame 801 and an annular component 802. The annular component 802 is fixedly connected to the connecting frame 801 by connecting screws. A plug-in block 17 is fixedly connected to the surface of the annular component 802. The surface of the plug-in block 17 is movably connected to the inner wall of the relief groove 16.

[0030] In this embodiment, when it is necessary to replace the filter 7, the ring 802 can be disassembled while the connecting bracket 801 remains stationary. In this case, the filters 7 can be replaced one by one, or only one filter 7 can be replaced without disassembling all of them.

[0031] Specifically, the anti-rotation component includes an electric push rod 18, which is fixedly connected to the support frame 1. The output shaft of the electric push rod 18 is fixedly connected to the trapezoidal block 19. A limit groove 20 is formed on the surface of the fixed frame 8. The inner sidewall of the limit groove 20 is movably connected to the surface of the trapezoidal block 19. The extension and retraction direction of the electric push rod 18 coincides with the vertical line of the center of the two adjacent filters 7.

[0032] The anti-rotation component also includes a laser sensor 21, which is fixedly connected to the surface of the support frame 1. A reflector 22 is fixedly connected to the surface of the mounting frame 5. The number of reflectors 22 is the same as the number of filters 7, and the reflectors 22 are located on the connecting line between the center of the filter 7 and the center of the support frame 1.

[0033] The working principle and usage process of this utility model are as follows: When the filter 7 needs to be replaced, the electric push rod 18 is activated, causing the trapezoidal block 19 to disengage from the limiting groove 20. After receiving the drive command, the drive motor 2 drives the drive gear 3 to rotate. The drive gear 3, through the teeth 6, can drive the mounting bracket 5 to rotate. The rotation speed of the drive motor 2 is controlled according to the drive command. When the set rotation speed is reached, the drive motor 2 stops rotating, and the trapezoidal block 19 is reset under the action of the electric push rod 18, inserted into the interior of the limiting groove 20, and fixes the mounting bracket 5.

[0034] In another embodiment, in order to achieve more accurate positioning, the laser sensor 21 continuously emits laser light and receives reflected light signals as the mounting bracket 5 rotates. The same number of reflectors 22 as the filters 7 are fixedly connected to the mounting bracket 5. The reflectors 22 have smooth surfaces and can reflect almost all of the laser light back to the laser sensor 21. When the laser sensor 21 detects a high reflection signal, it sends a signal to the controller, which then sends a signal to indicate whether the drive motor 2 should stop rotating. If it does not stop rotating, the drive motor 2 continues to rotate until a stop signal is received.

[0035] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter wheel control structure, comprising a support frame (1) and a drive motor (2), characterized in that: The drive motor (2) is fixedly connected to the surface of the support frame (1). A drive gear (3) is fixedly connected to the output shaft of the drive motor (2). A mounting frame (5) is movably arranged on the support frame (1) through a connecting shaft (4). Teeth (6) are fixedly arranged on the surface of the mounting frame (5). The teeth (6) mesh with the drive gear (3). The mounting frame (5) has a filter (7) installed inside, and a fixing frame (8) for fixing the filter (7) is installed on the surface of the mounting frame (5). The support frame (1) has an anti-rotation component for braking the mounting frame (5).

2. The filter wheel control structure according to claim 1, characterized in that: The connecting shaft (4) is connected to the support frame (1) through the connecting bearing. The end of the connecting shaft (4) is fixedly connected to the fixing member (9), and the mounting frame (5) is fixedly sleeved on the surface of the fixing member (9). The fixing frame (8) is movably sleeved on the surface of the fixing member (9); The mounting bracket (5) and the fixing bracket (8) are fixedly connected by fastening screws (10).

3. The filter wheel control structure according to claim 2, characterized in that: The surface of the fastener (9) is provided with a slot (11), and the surface of the fixing frame (8) is fixedly connected with a slot protrusion (12). The surface of the slot protrusion (12) is movably connected to the inner wall of the slot (11), and the surface of the fastener (9) is threadedly connected with a threaded ring (13) for fixing the fixing frame (8).

4. The filter wheel control structure according to claim 2, characterized in that: The mounting bracket (5) has a fixed internal connection to a positioning protrusion (14), and the surface of the filter (7) is provided with a positioning groove (15). The positioning protrusion (14) and the positioning groove (15) are movably connected. The mounting bracket (5) also has a clearance groove (16).

5. The filter wheel control structure according to claim 4, characterized in that: The fixing frame (8) includes a connecting frame (801) and a ring (802). The ring (802) is fixedly connected to the connecting frame (801) by connecting screws. A plug block (17) is fixedly connected to the surface of the ring (802). The surface of the plug block (17) is movably connected to the inner wall of the relief groove (16).

6. The filter wheel control structure according to claim 1, characterized in that: The anti-rotation component includes an electric push rod (18), which is fixedly connected to the support frame (1). The output shaft of the electric push rod (18) is fixedly connected to the trapezoidal block (19). A limiting groove (20) is opened on the surface of the fixed frame (8). The inner sidewall of the limiting groove (20) is movably connected to the surface of the trapezoidal block (19). The extension and retraction direction of the electric push rod (18) coincides with the vertical line of the center of the two adjacent filters (7).

7. The filter wheel control structure according to claim 6, characterized in that: The anti-rotation component also includes a laser sensor (21), which is fixedly connected to the surface of the support frame (1). A reflector (22) is fixedly connected to the surface of the mounting frame (5). The number of reflectors (22) is the same as the number of filters (7), and the reflector (22) is located on the connecting line between the center of the filter (7) and the center of the support frame (1).

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