Photoelectric reflector switching device

Abstract

The utility model relates to a photoelectric reflector switching device which comprises the components of a base which is provided with a group of adjacent or opposite side surfaces which are respectively corresponding to different view fields; the base is used for supporting a camera, the reflecting mirror assembly is arranged in the base and comprises a reflecting mirror and a rotating shaft, one end face of the rotating shaft is an inclined face, the reflecting mirror is arranged on the inclined face, and the driving assembly is used for driving the rotating shaft to rotate and driving the reflecting mirror to rotate so as to freely switch different view fields. Through the device, the size and weight of the whole device can be reduced, meanwhile, the structure is very simple and convenient, and the machining, assembling and adjusting difficulty of the whole device is reduced.

Description

Technical Field

[0001] This application relates to the field of optical and mechanical design and manufacturing, specifically to a photoelectric reflector switching device. Background Technology

[0002] Optoelectronic devices typically search for targets with a wide field of view, obtain their location, and then switch to a narrower field of view for tracking. Due to the limited size and weight of the optoelectronic device's cabin, the technical approach involves sharing the rear optical path and infrared detector for both wide and narrow field of view optics, and using an optoelectronic mirror switching device to achieve switching between the two. During the switching process, high requirements are typically placed on the field of view switching time and repeatability accuracy, while also considering miniaturization and lightweight design.

[0003] Currently, there are two types of photoelectric reflector switching devices: lead screw guide rail cutting-in and cutting-out and linkage mechanism. Among them, the lead screw guide rail cutting-in and cutting-out type has a fast switching time, but it requires a large space; the linkage mechanism type is more complex, and its processing and assembly are more difficult. Summary of the Invention

[0004] This application provides a photoelectric reflector switching device, which can solve the problems of complex structure and large space occupation during switching in the prior art.

[0005] This application provides a photoelectric reflector switching device, comprising: a base, wherein a group of adjacent or opposite sides correspond to different fields of view; a reflector assembly disposed within the base, the reflector assembly including a reflector and a rotating shaft, one end face of the rotating shaft being an inclined surface, and the reflector disposed on the inclined surface; and a driving component for driving the rotating shaft to rotate and causing the reflector to rotate, so as to perform arbitrary switching between different fields of view.

[0006] In some embodiments, the system further includes a limiting and locking component disposed outside the base for limiting and locking the rotating shaft.

[0007] In some embodiments, the limiting locking assembly includes a limiting block, a first mounting base, and two electromagnets. The limiting block is fixed to the other end face of the rotating shaft, the first mounting base is fixed to the second mounting base, and the two electromagnets are arranged in parallel on the first mounting base and can respectively engage with a set of opposite sides of the limiting block.

[0008] In some embodiments, both electromagnets are demagnetized when energized and magnetized when de-energized.

[0009] In some embodiments, the limiting locking assembly further includes a second mounting base, the first mounting base is fixed to the base by the second mounting base, and a bearing assembly is provided in the first mounting base and the second mounting base, and the rotating shaft is in hole-shaft fit with the bearing assembly.

[0010] In some embodiments, the bearing assembly includes an inner bearing, an outer bearing, a bearing spacer, and a pressure ring. The bearing spacer is sandwiched between the inner and outer bearings, and the pressure ring is disposed outside the outer bearing and threaded onto the rotating shaft. The inner and outer bearings and the bearing spacer are located within the second mounting base.

[0011] In some embodiments, both bearings are angular contact ball bearings.

[0012] In some embodiments, the drive assembly includes a motor and a motor mount, the motor being mounted on the base via the motor mount, and the motor being connected to the rotating shaft via a primary gear and a secondary gear.

[0013] In some embodiments, the drive assembly further includes a gear clamping block, wherein the main gear is fixed to the shaft of the motor via the gear clamping block; the secondary gear is fixed to the shaft body of the rotating shaft, and the secondary gear is a non-circular gear.

[0014] In some embodiments, the reflector is made of aluminum alloy and is integrated with the rotating shaft.

[0015] The beneficial effects of the technical solutions provided in this application include:

[0016] By arranging a set of adjacent or opposite sides of the base to correspond to different fields of view, and placing the reflector assembly inside the base, upon receiving a field-of-view switching command, the drive assembly drives the rotating shaft of the reflector assembly to rotate, simultaneously causing the reflector on its lower end face to rotate synchronously, thereby switching between different fields of view. Since the rotating shaft and reflector are located inside the base 1, they are protected from external interference or damage; simultaneously, this switching method reduces the overall size and weight of the device, and its structure is very simple, reducing the difficulty of processing and assembly. This application solves the problems of complex structures and large space requirements in existing photoelectric reflector switching devices. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the photoelectric reflector switching device in the embodiments of this application;

[0019] Figure 2 for Figure 1 A bottom view;

[0020] Figure 3 for Figure 1 Main sectional view along the PP direction;

[0021] Figure 4 for Figure 1 or Figure 3 A schematic diagram showing the connection between the central base and the limit locking assembly;

[0022] Figure 5 for Figure 1 A schematic diagram showing the connection between the central reflector assembly, the drive assembly, and the limit locking assembly.

[0023] In the picture:

[0024] 1. Base;

[0025] 2. Mirror assembly; 21. Mirror; 22. Rotation axis;

[0026] 3. Drive assembly; 31. Motor; 32. Motor mount; 33. Main gear; 34. Secondary gear; 35. Gear clamping block;

[0027] 4. Limit locking assembly; 41. Limit block; 42. First mounting base; 43. Electromagnet; 44. Second mounting base;

[0028] 5. Bearing assembly; 51. Inner bearing; 52. Outer bearing; 53. Bearing spacer; 54. Pressure ring. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0030] This application provides a photoelectric reflector switching device that can solve the problems in the prior art where it is difficult to meet the requirements of field switching time and repeatability positioning accuracy during the switching process, and the device is also complex in structure and large in size.

[0031] See Figure 1-3 , Figure 1This is a perspective view of the photoelectric reflector switching device in the embodiments of this application; Figure 2 yes Figure 1 A bottom view; Figure 3 for Figure 1 Main sectional view along the PP direction. (e.g.) Figure 1-3 As shown, the photoelectric reflector switching device includes a base 1, a reflector assembly 2, and a drive assembly 3. Typically, the base 1 serves as the foundation of the photoelectric reflector switching device, ensuring the stability of the entire device during use. Figure 2 As shown, the base 1 has multiple sides, and a set of adjacent or opposite sides of the base 1 corresponds to different fields of view. Preferably, a set of adjacent sides of the base 1 corresponds to different fields of view, which reduces switching time. For example, Figure 2 The directions of A and B represent different fields of view.

[0032] The reflector assembly 2 is rotatably mounted inside the base 1, protecting these precision components from external interference or damage. The reflector assembly 2 includes a reflector 21 and a rotating shaft 22. One end face of the rotating shaft 22 is inclined, and the reflector 21 is positioned on this inclined surface. When the rotating shaft 22 rotates, the reflector 21 on the inclined surface can be positioned opposite a set of adjacent or opposite sides of the base 1, thereby achieving the purpose of switching between different fields of view. By adopting the above switching method, only the rotating shaft 22 needs to rotate the reflector 21 to align it with different sides, thus achieving the switching between different fields of view. It occupies very little space, and by cleverly combining the reflector 21 and the rotating shaft 22, the structure is very lightweight and easy to install and disassemble. Figure 1-3 As shown, the drive assembly 3 is installed on the side of the base 1. It can drive the rotating shaft 22 to rotate and drive the reflector 21 to rotate, so as to switch between different fields of view. This can reduce the operator's workload. The drive assembly 3 drives the rotating shaft 22, which can better control the rotation variables and ensure precise and smooth rotation. Here, the drive assembly 3 can generally be a motor drive.

[0033] In this embodiment, by arranging a group of adjacent or opposite sides of the base 1 to correspond to different fields of view, and placing the reflector assembly 2 inside the base 1, upon receiving a field-of-view switching command, the drive assembly 3 drives the rotation shaft 22 of the reflector assembly 2 to rotate, simultaneously causing the reflector 21 on its lower end face to rotate synchronously, thereby switching between different fields of view. Since the rotation shaft 22 and the reflector 21 are located inside the base 1, they are protected from external interference or damage; simultaneously, this switching method reduces the overall size and weight of the device, and its structure is also very simple, reducing the difficulty of processing and assembly. This embodiment solves the problem of complex structures and large space requirements in existing photoelectric reflector switching devices.

[0034] Furthermore, in one embodiment, such as Figure 1 and Figure 3 As shown, the photoelectric reflection switching device further includes a limiting and locking component 4, which is disposed outside the base 1 and used to limit and lock the rotating shaft 22. In this embodiment, the limiting and locking component 4 is disposed outside the base 1, wherein a part of the limiting and locking component 4 is fixed to the base 1 and the other part is fixed to the rotating shaft 22. When switching the field of view, the two parts cooperate with each other to limit and lock the rotating shaft 22, ensuring that the rotating shaft 22 runs within a predetermined range, avoiding mechanical damage, and ensuring switching time and repeatability accuracy.

[0035] Furthermore, in one embodiment, see... Figure 4 , Figure 4 for Figure 1 or Figure 3 A schematic diagram showing the connection between the base 1 and the limiting locking assembly 4. The limiting locking assembly 4 includes a limiting block 41, a first mounting base 42, and two electromagnets 43. The limiting block 41 is fixed to the other end face of the rotating shaft 22, the first mounting base 42 is fixed to the base 1, and the two electromagnets 43 are arranged parallel to the first mounting base 42, and can respectively engage with a set of opposite sides of the limiting block 41. In this embodiment, the limiting locking assembly 4 includes a limiting block 41 (i.e., the "other part" mentioned in the previous embodiment), a first mounting base 42, and two electromagnets 43 (i.e., the "part" mentioned in the previous embodiment). The limiting block 41 is fixed to the other end face of the rotating shaft 22, the first mounting base 42 is fixed to the base 1, and the two electromagnets 43 are arranged parallel to the first mounting base 42, and can respectively engage with a set of opposite sides of the limiting block 41. When a field-of-view switching command is received, the driving assembly 3 drives the rotating shaft 22 to rotate. At this time, the rotating shaft 22 will not only drive the reflector 21 to rotate, but also drive the limiting block 41 to rotate. When one side of the limiting block 41 abuts against the corresponding electromagnet 43, the rotating shaft 22 will stop rotating, and the motor 31 can be controlled to stop running. At this time, the limiting block 41 and the electromagnet 43 are tightly attracted, so that the switching is accurately positioned under the mechanical limit of the electromagnet 43, and the position of the reflector 21 before and after switching is locked, ensuring that the reflector 21 will not shake due to external force when in use.

[0036] Furthermore, in some other embodiments, such as Figure 4 As shown, two electromagnets 43 are retractably mounted on the first mounting base 42, and a shim is provided between the electromagnets 43 and the first mounting base 42. By increasing or decreasing the thickness of the shim, the extension length of the two electromagnets 43 can be controlled, thereby controlling the extreme position of the limiting block 41, and thus limiting the rotation angle of the rotating shaft 22.

[0037] In other embodiments, the rotation angle of the rotating shaft 22 can also be limited by changing the volume of the limiting block 41 according to the actual situation.

[0038] Furthermore, in one embodiment, both electromagnets 43 are demagnetized when energized and magnetized when de-energized. In this embodiment, by demagnetizing both electromagnets 43 when energized and magnetizing when de-energized, the locking of the reflector 21 before and after switching positions can be achieved by switching the electromagnets 43 on and off. Thus, after the field of view is switched, the motor does not need to be continuously energized to maintain the position, reducing motor heat generation and improving motor lifespan and repeatability. The magnetic force of the electromagnets 43 is sufficient to prevent them from loosening during vibration and impact.

[0039] Furthermore, in one embodiment, such as Figure 3 As shown, the limiting and locking assembly 4 also includes a second mounting base 44. The first mounting base 42 is fixed to the base 1 via the second mounting base 44. A bearing assembly 5 is provided within both the first and second mounting bases 42, and the rotating shaft 22 and the bearing assembly 5 are fitted with a hole-shaft connection. In this embodiment, the limiting and locking assembly 4 also includes a second mounting base 44, which fixes the first mounting base 42 to the base 1, thus better distributing the mechanical stress and load. This tiered installation method reduces the pressure at a single mounting point and lowers the risk of structural deformation due to concentrated loads. The bearing assembly 5 effectively reduces friction and vibration between the rotating shaft 22 and the mounting base. Especially in scenarios where the rotating shaft 22 rotates at high speed or frequently starts and stops, the bearing assembly 5 can effectively absorb and disperse vibrations during operation, reduce noise emissions, and ensure stable operation of the device. Furthermore, the use of a hole-shaft connection to fix the rotating shaft 22 ensures precise alignment between the rotating shaft 22 and the bearing assembly 5. This fixing method effectively prevents the rotating shaft 22 from shifting or moving during operation, ensuring the accuracy and consistency of rotation.

[0040] Furthermore, in one embodiment, such as Figure 3As shown, the bearing assembly 5 includes an inner bearing 51, an outer bearing 52, a bearing spacer 53, and a pressure ring 54. The bearing spacer 53 is sandwiched between the inner and outer bearings, and the pressure ring 54 is disposed outside the outer bearing 52 and is threaded onto the rotating shaft 22. The inner and outer bearings and the bearing spacer 53 are located inside the second mounting base 44. In this embodiment, the bearing assembly 5 includes an inner bearing 51, an outer bearing 52, a bearing spacer 53, and a pressure ring 54. By separately placing the inner bearing 51 and the outer bearing 52 within the second mounting base 44, the mechanical load borne by the rotating shaft 22 is distributed, thereby reducing the pressure on a single bearing and improving the overall load-bearing capacity and service life. The bearing spacer 53 is sandwiched between the inner bearing 51 and the outer bearing 52. By grinding the bearing spacer 53, the clearance between the two bearings can be precisely adjusted, ensuring the correct installation and stable operation of the two bearings and avoiding rotational problems or noise issues caused by improper clearance. The pressure ring 54 is located outside the outer bearing 52 and threaded onto the rotating shaft 22. By applying an appropriate preload, the stability between the outer bearing 52 and the inner bearing 51 is ensured, preventing loosening due to vibration or impact and providing a reliable fixing effect. By placing the inner bearing 51, the outer bearing 52, and the bearing spacer 53 within the second mounting base 44, and the pressure ring 54 outside the outer bearing 52, it is convenient to repair and replace damaged parts in the future, improving maintainability.

[0041] Furthermore, in one embodiment, such as Figure 3 As shown, both bearings are angular contact ball bearings. In this embodiment, the angular contact ball bearings possess high precision, effectively maintaining the accurate position and stable movement of the rotating shaft 22. By setting two such bearings to work together, the accuracy and consistency of rotation can be further improved, reducing errors caused by axial or radial offset.

[0042] Furthermore, in one embodiment, see... Figure 3 and Figure 5 , Figure 5 for Figure 1 A schematic diagram showing the connection between the central reflector assembly 2, the drive assembly 3, and the limit locking assembly 4. Figure 3 and Figure 5As shown, the drive assembly 3 includes a motor 31 and a motor mount 32. The motor 31 is mounted on the base 1 via the motor mount 32, and the motor 31 is connected to the rotating shaft 22 via a main gear 33 and a secondary gear 34. In this embodiment, the drive assembly 3 includes a motor 31 and a motor mount 32. The motor 31 is mounted on the base 1 via the motor mount 32, providing a stable mounting platform for the motor 31 and ensuring its safe and stable operation. This helps reduce vibration and noise, improving the overall stability and reliability of the equipment. Furthermore, the motor 31 is connected to the rotating shaft 22 via the main gear 33 and the secondary gear 34, achieving efficient power transmission from the motor 31 through the meshing of the main gear 33 and the secondary gear 34. By adjusting the number and tooth profile of the gears, the transmission ratio can be flexibly changed to meet different working requirements. In addition, the gear connection between the motor 31 and the rotating shaft 22 makes maintenance and replacement of the motor 31 more convenient.

[0043] Furthermore, in one embodiment, such as Figure 3 and Figure 5 As shown, the drive assembly 3 also includes a gear clamping block 35. The main gear 33 is fixed to the shaft of the motor 31 via the gear clamping block 35; the secondary gear 34 is fixed to the shaft of the rotating shaft 22, and the secondary gear 34 is a non-circular gear. In this embodiment, the drive assembly 3 also includes a gear clamping block 35. The main gear 33 is fixed to the shaft of the motor 31 via the gear clamping block 35 to prevent loosening and ensure stable transmission of driving force. The secondary gear 34 is tightly fixed to the shaft of the rotating shaft 22, which can reduce the gap and offset between the secondary gear 34 and the rotating shaft 22, ensure accuracy in the transmission process, and reduce energy loss and noise. In this embodiment, the secondary gear 34 is set to be a non-circular gear according to the actual situation. This allows the transmission ratio to be adjusted or the transmission direction to be changed according to specific needs, improving the flexibility of transmission between the main gear 33 and the secondary gear 34, and also saving gear manufacturing materials.

[0044] Furthermore, in one embodiment, the reflector 21 is made of aluminum alloy and is integrated with the rotating shaft 22. In this embodiment, aluminum alloy has a lower density, and the reflector 21 made of aluminum alloy is lighter than other materials (such as glass or ceramic), which helps to reduce the weight of the entire device, reduce transportation and installation costs, and reduce the burden on the base 1. The integrated design of the reflector 21 and the rotating shaft 22 simplifies the structure of the device, reduces the number of parts, and reduces assembly costs; at the same time, it can also reduce errors caused by the assembly of parts, improve the overall accuracy of the device, and for optical equipment, improved accuracy means improved performance; in addition, it makes the connection between the reflector 21 and the rotating shaft 22 more robust, reduces loosening or deformation caused by vibration or impact, improves its stability, and ensures its normal operation in harsh environments.

[0045] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0046] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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 limitations, 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.

[0047] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A photoelectric reflector switching device, characterized in that, include: The base (1) has a set of adjacent or opposite sides that correspond to different fields of view; A reflector assembly (2) is disposed within the base (1). The reflector assembly (2) includes a reflector (21) and a rotating shaft (22). One end face of the rotating shaft (22) is an inclined surface, and the reflector (21) is disposed on the inclined surface. The driving component (3) is used to drive the rotating shaft (22) to rotate and drive the reflector (21) to rotate so as to switch between different fields of view.

2. The photoelectric reflector switching device as described in claim 1, characterized in that, Also includes: The limiting and locking assembly (4) is disposed outside the base (1) and is used to limit and lock the rotating shaft (22).

3. The photoelectric reflector switching device as described in claim 2, characterized in that, The limiting locking assembly (4) includes a limiting block (41), a first mounting base (42), and two electromagnets (43). The limiting block (41) is fixed to the other end face of the rotating shaft (22), the first mounting base (42) is fixed to the base (1), and the two electromagnets (43) are arranged in parallel on the first mounting base (42) and can respectively attract a set of opposite sides of the limiting block (41).

4. The photoelectric reflector switching device as described in claim 3, characterized in that, Both electromagnets (43) are demagnetized when energized and magnetized when de-energized.

5. The photoelectric reflector switching device as described in claim 3, characterized in that, The limiting locking assembly (4) further includes a second mounting base (44), the first mounting base (42) is fixed to the base (1) through the second mounting base (44), the first mounting base (42) and the second mounting base (44) are provided with bearing assemblies (5), and the rotating shaft (22) and the bearing assembly (5) are in hole-shaft cooperation.

6. The photoelectric reflector switching device as described in claim 5, characterized in that, The bearing assembly (5) includes an inner bearing (51), an outer bearing (52), a bearing spacer (53), and a pressure ring (54). The bearing spacer (53) is sandwiched between the inner and outer bearings. The pressure ring (54) is located outside the outer bearing (52) and is threaded onto the rotating shaft (22). The inner and outer bearings and the bearing spacer (53) are located inside the second mounting base (44).

7. The photoelectric reflector switching device as described in claim 6, characterized in that, Both bearings are angular contact ball bearings.

8. The photoelectric reflector switching device as described in claim 1, characterized in that, The drive assembly (3) includes a motor (31) and a motor mount (32). The motor (31) is mounted on the base (1) via the motor mount (32), and the motor (31) is connected to the rotating shaft (22) via a main gear (33) and a secondary gear (34).

9. The photoelectric reflector switching device as described in claim 8, characterized in that, The drive assembly (3) further includes a gear clamping block (35), the main gear (33) is fixed to the shaft of the motor (31) through the gear clamping block (35); the auxiliary gear (34) is fixed to the shaft of the rotating shaft (22), and the auxiliary gear (34) is a non-circular gear.

10. The photoelectric reflector switching device as described in claim 1, characterized in that, The reflector (21) is made of aluminum alloy and is integrated with the rotating shaft (22).

Images