Double-view-field switching structure of infrared system

Abstract

The utility model discloses a double-view-field switching structure of an infrared system, which belongs to the technical field of infrared system imaging and comprises a variable-view-field bearing component, a lens seat joint flange 01, a rotating hub, a lens component 4, a limiting block, a lens seat joint flange 02, a lens component 3, a direct-current motor, a variable-view-field motor seat, a worm, a turbine and a Hall component. The objective of the utility model is to complete the field-of-view switching function of an infrared system on the premise of limited spatial layout and lightweight requirements. In the design, a zoom rotating hub is trimmed, dynamic load balance around a rotating shaft is guaranteed, two ends of the rotating hub are provided with a pair of variable view field bearing components which are pre-tightened up and down, the position of an optical axis is guaranteed, a direct current motor drives the rotating hub to rotate by 90 degrees after the rotating direction is changed by 90 degrees after speed reduction of a turbine worm transmission mechanism, and switching of a large view field and a small view field is achieved. The Hall component is installed on the frame and corresponds to the angle before and after rotation, so that reliable guarantee is provided for view field switching in place in the view field switching process of rotation of the rotating hub.

Description

Technical Field

[0001] The utility model relates to the technical field of dual-field switching of infrared systems, and specifically to a dual-field switching structure for an infrared system. Background Technique

[0002] In recent years, with the continuous development and progress of infrared technologies at home and abroad, infrared optical systems have been widely used in military and civilian fields.

[0003] Small size and light weight have become the most basic technical requirements for current infrared systems. Due to space constraints, traditional infrared opto-mechanical systems are developing towards refinement and miniaturization. This necessarily requires the ability to think from multiple perspectives when designing the structure. Within the limited space range, the structure of the product needs to be designed to meet the functional and performance requirements of the whole machine. Therefore, a dual-field switching structure for an infrared system needs to be designed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dual-field switching structure for an infrared system to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dual-field switching structure for an infrared system includes a variable-field bearing component and a rotating hub. The variable-field bearing component is fixed on the main frame by a plurality of fastening screws and is respectively placed on both sides of the rotating hub. There are two flanges on the rotating hub for supporting lens 3 component and lens 4 component.

[0007] As a further scheme of the utility model: One side of the rotating hub is connected to the lens mount joint flange 01, and the other side of the rotating hub is connected to the lens mount joint flange 02. The lens mount joint flange 02 is connected to the worm and gear transmission mechanism.

[0008] As a further scheme of the utility model: The variable-field bearing component includes a plurality of fastening screws.

[0009] As a further scheme of the utility model: The limiting block contains a magnet for physically adsorbing the lens mount joint flange 02.

[0010] As a further scheme of the utility model: The rotating hub is made of high-strength metal material.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. After the DC motor is decelerated by the worm and gear transmission mechanism and the rotation direction is changed by 90 degrees, it drives the rotating hub to rotate 90 degrees to realize the switching between large and small fields of view;

[0013] 2. The Hall component is installed on the frame, corresponding to the angles before and after rotation, so as to ensure that during the process of field of view switching when the rotating hub rotates, it provides a reliable guarantee for the field of view to be switched in place.

[0014] 3. The utility model has a simple structure, convenient maintenance and high transmission efficiency. Description of the Drawings

[0015] Figure 1 It is the large field of view structure diagram of the dual-field of view switching structure of the infrared system.

[0016] Figure 2 It is the small field of view structure diagram of the dual-field of view switching structure of the infrared system.

[0017] Figure 3 It is the dual-field of view switching structure diagram of the dual-field of view switching structure of the infrared system.

[0018] Figure 4 It is the rotating hub structure diagram of the dual-field of view switching structure of the infrared system.

[0019] Figure 5 It is the structure diagram of the worm and worm gear transmission mechanism of the dual-field of view switching structure of the infrared system.

[0020] As shown in the figure: 1. Detector component; 2. Turning component; 3. Galvano mirror component; 4. Focusing component; 5. Dual-field of view switching component; 6. Main frame; 7. Front lens group; 8. Variable field of view bearing component; 9. Mirror base joint flange 01; 10. Rotating hub; 11. Lens 4 component; 12. Limit block; 13. Mirror base joint flange 02; 14. Lens 3 component; 15. DC motor; 16. Variable field of view motor base; 17. Worm; 18. Worm gear; 19. Hall component. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 5, in the embodiment of the present utility model, an infrared system dual-field-of-view switching structure includes a main frame 6, a variable-field-of-view bearing component 8, a rotating hub 10, a limit block 12, and a Hall component 19. A detector component 1, a turning component 2, a galvanometer component 3, a focusing component 4, a dual-field-of-view switching component 5, and a variable-field-of-view bearing component 8 are installed on the main frame 6. The variable-field-of-view bearing component 8 is installed on both sides of the main frame 6 and is used to support the rotation of the rotating hub 10. There are two flanges on the rotating hub 10, which are used to support the lens 3 component 14 and the lens 4 component 11. One side of the rotating hub 10 is connected to the lens mount joint flange 01 9, and the other side of the rotating hub 10 is connected to the lens mount joint flange 02 13. The lens mount joint flange 02 13 is connected to a turbine 18 worm 17 transmission mechanism, and the turbine 18 worm 17 transmission mechanism is used to transmit power. The variable-field-of-view bearing component 8 includes a plurality of fastening screws, which are used to fix the variable-field-of-view bearing component 8 on the main frame 6. The limit block 12 is used for physically controlling the rotation in place, and the Hall component 19 is used for accurately controlling the state of the field-of-view switching in place. One end of the rotating hub 10, the lens mount joint flange 019, is connected to the variable-field-of-view bearing component 8, and the other end of the rotating hub 10, the lens mount joint flange 02 13, is connected to the turbine 18 worm 17 transmission mechanism. The limit block 12 contains a magnet, which is used for physically adsorbing the lens mount joint flange 0213 to ensure the completion of the field-of-view switching. The rotating hub 10 is made of a high-strength metal material to ensure the stability of the switching device during rotation;

[0023] The variable-field-of-view bearing component 8 is fixed on the main frame 6 using a plurality of fastening screws and is respectively placed on both sides of the rotating hub 10 to support the rotation of the rotating hub 10.

[0024] The rotating hub 10 is made of a high-strength metal material to ensure the stability of the switching device during rotation. There are two lens flanges on the rotating hub 10, which are similar to a ring shape and are used to support the lens 3 component 14 and the lens 4 component 11. One side of the rotating hub 10, the lens mount joint flange 01 9, is connected to the variable-field-of-view bearing component 8, and the other side, the lens mount joint flange 02 13, is connected to the turbine 18 worm 17 transmission mechanism to transmit power.

[0025] After the DC motor 15 decelerates through the turbine 18 worm 17 transmission mechanism and changes the rotation direction by 90 degrees, it drives the rotating hub 10 to rotate 90 degrees to realize the switching between the large and small fields of view;

[0026] The Hall component 19 is installed on the main frame 6 corresponding to the front and rear rotation angles, so as to ensure that during the process of the rotating hub 10 rotating for field-of-view switching, it provides a reliable guarantee for the field-of-view switching in place;

[0027] The lens mount joint flange 02 13 has a unique structure design, and at the same time, the limit block 12 contains a magnet, which can physically adsorb the lens mount joint flange 02 13 and is used for physically controlling the rotation of the rotating hub 10 in place to ensure the completion of the field-of-view switching;

[0028] The limiting block 12 is used for physically controlling the rotation to the in-place position;

[0029] The Hall component 19 accurately controls the in-place state of the field of view switching.

[0030] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An infrared system dual-field-of-view switching structure, comprising a variable-field-of-view bearing component (8), a DC motor (15), a Hall component (19), a limit block (12) and a rotating hub (10), characterized in that: The variable field of view bearing component (8) is fixed on the main frame (6) by a plurality of fastening screws and is respectively disposed on both sides of the swivel hub (10). There are two flanges on the swivel hub (10) for supporting the lens 3 component (14) and the lens 4 component (11). After the DC motor (15) is decelerated by the turbine (18) and worm (17) transmission mechanism and the rotation direction is changed by 90 degrees, the swivel hub (10) is driven to rotate 90 degrees. The Hall component (19) is mounted on the main frame (6).

2. The dual-field-of-view switching structure of the infrared system according to claim 1, characterized in that: One side of the swivel hub (10) is connected to the lens mount joint flange 01 (9), and the other side of the swivel hub (10) is connected to the lens mount joint flange 02 (13). The lens mount joint flange 02 (13) is connected to the turbine (18) and worm (17) transmission mechanism.

3. The dual-field-of-view switching structure of the infrared system according to claim 1, characterized in that: The variable field of view bearing component (8) includes a plurality of fastening screws.

4. The dual-field-of-view switching structure of the infrared system according to claim 1, wherein: The limit block (12) contains a magnet for physically adsorbing the lens mount joint flange 02 (13).

5. The dual-field-of-view switching structure of the infrared system according to claim 1, wherein: The swivel hub (10) is made of a high-strength metal material.

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