CN218956889U

CN218956889U - Focusing mechanism of thermal imaging detector

Info

Publication number: CN218956889U
Application number: CN202320024215.1U
Authority: CN
Inventors: 谭勇
Original assignee: Shanghai Lanmu Medical Technology Co ltd
Current assignee: Shanghai Lanmu Medical Technology Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-02
Anticipated expiration: 2033-01-05

Abstract

The utility model relates to the technical field of focal length adjustment, and discloses a focusing mechanism of a thermal imaging detector, which comprises a lens barrel, wherein a protective glass plate is fixedly arranged at the left end of the lens barrel, an installation seat is movably connected to the inside of the left end of the lens barrel, a germanium glass lens is fixedly arranged in the installation seat, and a sleeve is fixedly connected to the outside of the installation seat. According to the utility model, the driving rod is driven to rotate through the motor, so that the belt pulley is matched with the synchronous belt to drive the adjusting rods at the upper end and the lower end to rotate, the rotating adjusting rods can move and adjust left and right, and therefore, compared with a traditional adjusting mode that the mounting seat is pulled to move and adjust left and right through the sleeve, compared with the traditional adjusting mode, the adjusting device provided by the utility model, the mounting seat is pushed to push left by the rotating second threaded rod, the mounting seat is pulled to right by the rotating first threaded rod by 5.5mm through the sleeve, the actual leftward moving distance is 0.5mm, smaller displacement can be achieved, and the focusing precision is improved.

Description

Focusing mechanism of thermal imaging detector

Technical Field

The utility model relates to the technical field of focal length adjustment, in particular to a focusing mechanism of a thermal imaging detector.

Background

The thermal imaging detector refers to equipment for converting an image with temperature distribution into a visible image by infrared radiation detection of an object by utilizing an infrared thermal imaging technology, a lens barrel of the thermal imaging detector is internally provided with a focusing/zooming component, the existing lens focusing mechanism of the thermal imaging detector mostly adopts single-thread adjustment, and when the thermal imaging detector is adjusted, the lens focusing mechanism needs to be rapidly and accurately switched between two focal lengths, and the adjustment of the focal length is limited by the minimum pitch of a screw rod, so that the lens focusing mechanism cannot be more accurately adjusted.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a focusing mechanism of a thermal imaging detector, which has the advantage of improving focusing accuracy.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a thermal imaging detector mechanism of focusing, includes the lens cone, the left end fixed mounting of lens cone has the cover glass board, the inside swing joint of lens cone left end has the mount pad, the inside fixed mounting of mount pad has germanium glass lens, the outside fixedly connected with sleeve of mount pad, telescopic middle part activity has cup jointed the regulation pole, the outside fixedly connected with belt pulley of regulation pole, the cover is equipped with the hold-in range on the belt pulley, the inside fixedly connected with mount of lens cone, the middle part of mount is provided with detector focus subassembly, the inside fixedly connected with fixed frame of lens cone right-hand member, sliding connection has the motor on the fixed frame, fixedly connected with actuating lever on the motor.

As a preferable technical scheme of the utility model, the adjusting rod comprises a first threaded rod, the right side of the first threaded rod is fixedly connected with a connecting rod, the right side of the connecting rod is fixedly connected with a second threaded rod, and the second threaded rod is movably connected with the fixing frame.

As a preferable technical scheme of the utility model, the top and the bottom of the left end of the lens barrel are respectively provided with a limiting chute, the top and the bottom of the mounting seat are respectively fixedly connected with a limiting slide bar sliding along the inside of the limiting chute, and both sides of the mounting seat are respectively provided with a through hole.

As a preferable technical scheme of the utility model, the upper end and the lower end of the fixing frame are respectively penetrated with an adjusting opening, threads are engraved in the adjusting opening, the thread pitch is 6mm, and threads are engraved on the inner wall of the sleeve, and the thread pitch is 5.5mm.

As a preferable technical scheme of the utility model, the thread pitch on the first threaded rod is 5.5mm, and the thread pitch on the second threaded rod is 6mm.

As a preferable technical scheme of the utility model, a slideway is arranged at the bottom of the inside of the fixed frame, a supporting seat sliding along the inside of the slideway is fixedly connected with the bottom of the motor, and the driving rod is fixedly connected with a belt pulley at the upper end.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the driving rod is driven to rotate through the motor work, so that the adjusting rods at the upper end and the lower end are driven to rotate through the cooperation of the belt pulley and the synchronous belt, the adjusting rods are in threaded connection with the fixing frame through the adjusting ports, the positions of the fixing frame are fixed, the rotating adjusting rods can move left and right to be adjusted, the mounting seat is pulled to move left and right through the sleeve to be adjusted, and therefore the focusing purpose is achieved.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present utility model;

FIG. 2 is a schematic view of a mounting base according to the present utility model;

FIG. 3 is a schematic view of the timing belt position according to the present utility model;

fig. 4 is a schematic view of the motor position according to the present utility model.

In the figure: 1. a lens barrel; 101. limiting sliding grooves; 2. a cover glass plate; 3. a mounting base; 301. a through port; 302. a limit slide bar; 4. germanium glass lenses; 5. a sleeve; 6. a fixing frame; 7. a detector focusing assembly; 8. an adjusting rod; 801. a first threaded rod; 802. a connecting rod; 803. a second threaded rod; 9. a belt pulley; 10. a synchronous belt; 11. a driving rod; 12. a motor; 121. a support base; 13. a fixed frame; 131. and a slideway.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 4, the utility model provides a focusing mechanism of a thermal imaging detector, which comprises a lens cone 1, wherein a protective glass plate 2 is fixedly arranged at the left end of the lens cone 1, an installation seat 3 is movably connected to the inside of the left end of the lens cone 1, a germanium glass lens 4 is fixedly arranged inside the installation seat 3, a sleeve 5 is fixedly connected to the outside of the installation seat 3, an adjusting rod 8 is movably sleeved at the middle part of the sleeve 5, a belt pulley 9 is fixedly connected to the outside of the adjusting rod 8, a synchronous belt 10 is sleeved on the belt pulley 9, a fixing frame 6 is fixedly connected to the inside of the lens cone 1, a detector focusing assembly 7 is arranged at the middle part of the fixing frame 6, a fixing frame 13 is fixedly connected to the inside of the right end of the lens cone 1, a motor 12 is slidingly connected to the fixing frame 13, and a driving rod 11 is fixedly connected to the motor 12; the motor 12 works to drive the driving rod 11 to rotate, so that the belt pulley 9 is matched with the synchronous belt 10 to drive the adjusting rods 8 at the upper end and the lower end to rotate, and because the adjusting rods 8 are in threaded connection with the fixing frame 6 through the adjusting ports, the fixing frame 6 is fixed in position, the rotating adjusting rods 8 can move left and right to adjust, so that the mounting seat 3 is pulled by the sleeve 5 to move left and right to adjust, the focusing purpose is achieved, and compared with a traditional adjusting mode, the focusing precision is improved because the focusing precision can be achieved by rotating for one circle, and because the pitch of the same displacement distance is reduced, the screwing length of threads is prolonged, and the service life is prolonged in the reciprocating focusing displacement process.

The adjusting rod 8 comprises a first threaded rod 801, a connecting rod 802 is fixedly connected to the right side of the first threaded rod 801, a second threaded rod 803 is fixedly connected to the right side of the connecting rod 802, and the second threaded rod 803 is movably connected with the fixing frame 6;

the second threaded rod 803 drives the mounting seat 3 to push the mounting seat 3 to the left by 6mm, and the first threaded rod 801 can pull the mounting seat 3 to the right by 5.5mm through the sleeve 5, so that the actual distance to move to the left is 0.5mm, and compared with the traditional one-turn rotation, the innovation can achieve smaller displacement.

The top and the bottom of the left end of the lens barrel 1 are respectively provided with a limiting chute 101, the top and the bottom of the mounting seat 3 are respectively fixedly connected with a limiting slide bar 302 sliding along the inside of the limiting chute 101, and both sides of the mounting seat 3 are respectively provided with a through hole 301;

the limiting slide bar 302 slides along the inside of the limiting slide groove 101 to provide a limiting effect for the mounting seat 3, so that the mounting seat is more stable in the process of moving left and right.

Wherein, the upper and lower ends of the fixing frame 6 are penetrated with adjusting openings, the inside of each adjusting opening is carved with threads with the screw pitch of 6mm, and the inner wall of the sleeve 5 is carved with threads with the screw pitch of 5.5mm;

the second threaded rod 803 is in threaded sleeve connection with the inside of the adjusting port, when the second threaded rod 803 rotates, the second threaded rod 803 can move left and right to be adjusted because the position of the fixing frame 6 is fixed, and the fixing frame 6 has a limiting effect.

Wherein, the thread pitch on the first threaded rod 801 is 5.5mm, and the thread pitch on the second threaded rod 803 is 6mm;

by rotating the mounting seat 3 for one circle, compared with the traditional adjusting mode, the utility model pushes the mounting seat 3 to push the left for 6mm through the rotating second threaded rod 803, and the rotating first threaded rod 801 pulls the mounting seat 3 to the right for 5.5mm through the sleeve 5, so that the actual distance to move to the left is 0.5mm, smaller displacement can be achieved, and the focusing precision is improved.

The bottom of the inside of the fixed frame 13 is provided with a slide way 131, the bottom of the motor 12 is fixedly connected with a supporting seat 121 sliding along the inside of the slide way 131, and the driving rod 11 is fixedly connected with a belt pulley 9 at the upper end;

the driving rod 11 and the belt pulley 9 are driven to rotate through the operation of the motor 12, so that the adjusting rod 8 is driven to rotate and move left and right to perform focusing adjustment, the position of the fixing frame 6 is fixed due to the existence of threads, the motor 12 is pulled by the driving rod 11 to perform left and right movement adjustment, the supporting seat 121 slides along the inside of the slide way 131, the limiting effect can be achieved, and meanwhile supporting force is provided for the motor 12.

The working principle and the using flow of the utility model are as follows:

firstly, when focusing adjustment is needed, a starting motor 12 works to drive a driving rod 11 to rotate, so that a belt pulley 9 is matched with a synchronous belt 10 to drive an adjusting rod 8 at the upper end and the lower end to rotate, and as the adjusting rod 8 is in threaded connection with a fixing frame 6 through an adjusting port, the fixing frame 6 is fixed in position, the rotating adjusting rod 8 can move and adjust left and right, so that a mounting seat 3 is pulled to move and adjust left and right through a sleeve 5, and the focusing and focusing purposes are realized;

under the condition of rotating for one circle, compared with the traditional adjusting mode, the utility model pushes the mounting seat 3 to push the left by 6mm through the rotating second threaded rod 803, and the rotating first threaded rod 801 pulls the mounting seat 3 to the right by 5.5mm through the sleeve 5, so that the distance of actual leftward movement is 0.5mm, smaller displacement can be achieved, the focusing precision is improved, and the screw pitch is reduced at the same displacement distance, so that the screwing length of the screw thread is prolonged, and the service life is prolonged in the reciprocating focusing displacement process.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a thermal imaging detector focusing mechanism, includes lens cone (1), its characterized in that: the lens cone comprises a lens cone (1), and is characterized in that a protective glass plate (2) is fixedly arranged at the left end of the lens cone (1), a mounting seat (3) is movably connected to the left end of the lens cone (1), a germanium glass lens (4) is fixedly arranged inside the mounting seat (3), a sleeve (5) is fixedly connected to the outer portion of the mounting seat (3), an adjusting rod (8) is movably sleeved at the middle of the sleeve (5), a belt pulley (9) is fixedly connected to the outer portion of the adjusting rod (8), a synchronous belt (10) is sleeved on the belt pulley (9), a fixing frame (6) is fixedly connected to the inner portion of the lens cone (1), a detector focusing assembly (7) is arranged at the middle of the fixing frame (6), a motor (12) is fixedly connected to the right end of the lens cone (1), and a driving rod (11) is fixedly connected to the fixing frame (13).

2. A thermal imaging detector focusing mechanism according to claim 1, wherein: the adjusting rod (8) comprises a first threaded rod (801), a connecting rod (802) is fixedly connected to the right side of the first threaded rod (801), a second threaded rod (803) is fixedly connected to the right side of the connecting rod (802), and the second threaded rod (803) is movably connected with the fixing frame (6).

3. A thermal imaging detector focusing mechanism according to claim 1, wherein: limiting sliding grooves (101) are formed in the top and the bottom of the left end of the lens cone (1), limiting sliding strips (302) sliding along the inside of the limiting sliding grooves (101) are fixedly connected to the top and the bottom of the mounting seat (3), and through holes (301) are formed in two sides of the mounting seat (3).

4. A thermal imaging detector focusing mechanism according to claim 1, wherein: the upper end and the lower end of the fixing frame (6) are respectively penetrated with an adjusting opening, threads and a screw pitch are engraved in the adjusting openings, the inner wall of the sleeve (5) is engraved with threads and the screw pitch is 5.5mm.

5. A thermal imaging detector focusing mechanism according to claim 2, wherein: the thread pitch on the first threaded rod (801) is 5.5mm, and the thread pitch on the second threaded rod (803) is 6mm.

6. A thermal imaging detector focusing mechanism according to claim 1, wherein: slide (131) have been seted up to the inside bottom of fixed frame (13), the bottom fixedly connected with of motor (12) is along slide (131) inside gliding supporting seat (121), actuating lever (11) are fixed connection with belt pulley (9) of upper end.