Handheld thermal infrared imager

Abstract

The invention belongs to the technical field of thermal infrared imagers, and particularly relates to a handheld thermal infrared imager which comprises a thermal infrared imager body, a mounting groove is formed in one side of the side face of the thermal infrared imager body, a focusing assembly is rotatably connected to the interior of the mounting groove, a rubber pad is fixedly connected to the bottom end of the front surface of the thermal infrared imager body, and the rubber pad is fixedly connected to the bottom end of the front surface of the thermal infrared imager body. A limiting assembly is clamped to the top end of the front surface of the rubber pad, and a power supply assembly is clamped to the bottom end of the thermal infrared imager body. According to the infrared thermal imager, the focusing assembly is arranged, the focusing disc integrally extends to the outer side of the infrared thermal imager body through the first connecting rod, dust, sundries and the like can be prevented from entering the infrared thermal imager body to pollute an infrared lens and affect normal focusing and cleanliness of the infrared lens, and therefore the definition and accuracy of images can be improved, and the image quality is improved. And the service life of equipment can be prolonged, and stable operation in various environments can be ensured, so that the operation reliability and the imaging quality are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of infrared thermal imagers, and more specifically, it is a handheld infrared thermal imager. Background Art

[0002] An infrared thermal imager is a device that uses infrared rays for detection and imaging. It can capture the infrared light radiation emitted by an object and convert it into a visible image. This technology is based on the temperature difference of objects, enabling users to clearly identify the thermal distribution and temperature changes of objects in the dark or under adverse weather conditions. Infrared thermal imagers are widely used in multiple fields, including building inspection, mechanical fault diagnosis, medical thermal imaging, fire safety, and military surveillance, etc. With its efficient temperature monitoring ability, it can help users quickly identify problems, perform preventive maintenance, and assess potential safety hazards. Infrared thermal imagers are mainly divided into several types, such as portable (handheld), fixed, and airborne. The handheld infrared thermal imager is more flexible for users during on-site detection and maintenance due to its light weight, easy portability, simple operation, and the ability to quickly obtain images, allowing for temperature monitoring and fault diagnosis at any time and place.

[0003] A patent with the Chinese invention patent publication number CN114739517A discloses a protection device for an infrared thermal imager lens. The key points of its technical solution are: including a thermal imager body and a thermal imager grip provided below the camera body. One end of the thermal imager body is provided with a lens slot, and a lens body is arranged in the lens slot. An installation slot is provided on the thermal imager body outside the lens slot, and a detachable installation component is installed in the installation slot. One end of the installation component away from the lens is provided with a sealing ring, and a sealing cover adapted to the sealing ring is provided on the sealing ring; the sealing ring includes a ring body installed at one end of the installation component, and an inner ring is provided on the inner wall of the ring body. The whole device is simple to operate and easy to manufacture, solving the problem that the existing protection device for an infrared thermal imager lens is not convenient for installation and disassembly, is very inconvenient to use, and also increases the operation time of the staff.

[0004] However, the above technologies often have the following defects: For the lens of an infrared thermal imager, a focusing wheel is mostly provided for adjusting the focal length. In the prior art, the focusing wheel is mostly arranged with half outside the infrared thermal imager and half inside it, with part exposed to control the rotation of the focusing disc. However, it is easy to bring dust, debris, etc. into the interior of the infrared thermal imager, causing its interior to be contaminated or jammed, thus affecting the effective transmission of the lens, resulting in difficult focusing or errors, and further affecting the accuracy of the obtained image. At the same time, when continuous exploration of the image is required, the operator needs to press the control trigger for a long time, which easily causes hand operation fatigue, resulting in jitter or misoperation during image capture, and further affecting the operation stability and image acquisition accuracy.

[0005] To this end, the present invention provides a handheld infrared thermal imager. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A handheld infrared thermal imager described in the present invention includes an infrared thermal imager body. An installation groove is provided on one side of the side surface of the infrared thermal imager body. A focusing component is rotatably connected inside the installation groove. A rubber pad is fixedly connected to the bottom end of the front surface of the infrared thermal imager body. A limiting component is clamped to the top end of the front surface of the rubber pad. A power supply component is clamped to the bottom end of the infrared thermal imager body;

[0008] The focusing component includes a first connecting rod. The outer surface of the first connecting rod is rotatably connected inside the installation groove. One end of the first connecting rod is fixedly connected with a focusing disc. The other end of the first connecting rod is fixedly connected with a first bevel gear. The outer surface of the first bevel gear is engaged with a second bevel gear. A second connecting rod is fixedly connected to the front surface of the second bevel gear. A driving disc is fixedly connected to the outer surface of the second connecting rod. An infrared lens is engaged with the outer surface of the driving disc.

[0009] Preferably, the limiting component includes a snap ring. The inside of the snap ring is clamped to the top end of the front surface of the rubber pad. Threaded grooves are provided on both sides of the snap ring. A fixing bolt is threadedly connected inside the threaded groove. One end of the outer surface of the fixing bolt is slidably connected with a pressing plate. A spring is fixedly connected to the middle of the back surface of the pressing plate. One end of the spring is fixedly connected to the middle of the front surface of the snap ring.

[0010] Preferably, the power supply component includes a base. The edge of the upper surface of the base is clamped to the bottom end of the infrared thermal imager body. A first protective shell is fixedly connected to one side of the upper surface of the base. A second protective shell is threadedly connected to one side of the first protective shell through a bolt. A battery is provided inside the first protective shell and the second protective shell. Square grooves are provided on the other side of the first protective shell and one side of the second protective shell. Heat dissipation fins are fixedly connected inside the square grooves.

[0011] Preferably, vertical plates are fixedly connected to both sides of the upper surface of the infrared thermal imager body. A lens cover is rotatably connected inside the vertical plates.

[0012] Preferably, a circular frame is fixedly connected to the top end of the front surface of the infrared thermal imager body. A fixing frame is clamped to the outer surface of the circular frame. A high-transparency glass is fixedly connected inside the fixing frame. A limiting rod is fixedly connected to the upper surface of the circular frame. A positioning groove adapted to it is provided on the upper surface of the fixing frame.

[0013] Preferably, a wrench is provided in the middle of the front surface of the infrared thermal imager body, and the front surface of the wrench is in contact with the back surface of the pressing plate.

[0014] Preferably, a display screen is provided at the top of the back surface of the infrared thermal imager body, and control buttons are provided at the bottom of the back surface of the infrared thermal imager body and located below the display screen.

[0015] Preferably, ventilation grooves are provided at the bottom ends on both sides of the infrared thermal imager body, and heat dissipation grooves are provided at positions corresponding to both sides of the rubber pad.

[0016] Preferably, an external connection port is provided on the other side of the side surface of the infrared thermal imager body, and a protective cover is inserted above the external connection port on the side surface of the infrared thermal imager body.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the handheld infrared thermal imager of the present invention, through the provided focusing component, the focusing disc is integrally extended to the outside of the infrared thermal imager body by the first connecting rod, which can prevent dust, debris, etc. from entering the inside of the infrared thermal imager body, causing pollution to the infrared lens and affecting the normal focusing and cleanliness of the infrared lens. Thus, the clarity and accuracy of the image can be improved, and the service life of the device can be extended, ensuring stable operation in various environments to enhance the reliability of operation and the imaging quality.

[0019] 2. For the handheld infrared thermal imager of the present invention, through the provided limiting component, the fixing bolt can control the pressure exerted by the pressing plate on the wrench, thereby limiting the wrench to achieve continuous acquisition of images, avoiding hand fatigue caused by long-term pressing by the operator, resulting in jitter or misoperation during image capture, and thus effectively ensuring the accuracy of image acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is the front three-dimensional view of the present invention;

[0022] Figure 2 is the rear three-dimensional view of the present invention;

[0023] Figure 3 is the partial exploded view of the present invention;

[0024] Figure 4 is the structural schematic diagram of the infrared lens in the present invention;

[0025] Figure 5 is the structural schematic diagram of the pressing plate in the present invention;

[0026] Figure 6 It is a schematic structural diagram of the heat dissipation fin in the present invention;

[0027] Figure 7 is Figure 3 The partial enlarged view at position A in

[0028] In the figure: 1. Infrared thermal imager body; 2. Rubber pad; 3. First connecting rod; 4. Focus adjustment disc; 5. First bevel gear; 6. Second bevel gear; 7. Second connecting rod; 8. Driving disc; 9. Infrared lens; 10. Snap ring; 11. Fixing bolt; 12. Pressing plate; 13. Spring; 14. Base; 15. First protective shell; 16. Second protective shell; 17. Battery; 18. Heat dissipation fin; 19. Vertical plate; 20. Lens cover; 21. Ring frame; 22. Fixed frame; 23. High-transparency glass; 24. Limiting rod; 25. Display screen; 26. Control button; 27. Protective cover; 28. Wrench. Specific embodiments

[0029] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0030] As Figures 1 to 7 shown, a handheld infrared thermal imager according to an embodiment of the present invention includes an infrared thermal imager body 1. An installation groove is provided on one side of the side surface of the infrared thermal imager body 1. A focus adjustment component is rotatably connected inside the installation groove. The bottom end of the front surface of the infrared thermal imager body 1 is fixedly connected with a rubber pad 2. The top end of the front surface of the rubber pad 2 is clamped with a limiting component. The bottom end of the infrared thermal imager body 1 is clamped with a power supply component;

[0031] The focus adjustment component includes a first connecting rod 3. The outer surface of the first connecting rod 3 is rotatably connected inside the installation groove. One end of the first connecting rod 3 is fixedly connected with a focus adjustment disc 4. The other end of the first connecting rod 3 is fixedly connected with a first bevel gear 5. The outer surface of the first bevel gear 5 is engaged with a second bevel gear 6. The front surface of the second bevel gear 6 is fixedly connected with a second connecting rod 7. The outer surface of the second connecting rod 7 is fixedly connected with a driving disc 8. The outer surface of the driving disc 8 is engaged with an infrared lens 9. The first connecting rod 3 extends the focus adjustment disc 4 as a whole to the outside of the infrared thermal imager body 1. By rotating the focus adjustment disc 4, the first bevel gear 5 is driven to rotate through the first connecting rod 3, and then the second bevel gear 6 drives the driving disc 8 to rotate through the second connecting rod 7 to focus the infrared lens 9. Thereby, dust, sundries, etc. can be prevented from entering the inside of the infrared thermal imager body 1, causing pollution to the infrared lens 9 and affecting the normal focus adjustment and cleanliness of the infrared lens 9. Thereby, the clarity and accuracy of the image can be improved, and the service life of the device can be extended, ensuring stable operation in various environments, so as to improve the reliability of operation and the imaging quality.

[0032] The limiting component includes a snap ring 10. The inside of the snap ring 10 is clamped to the top of the front surface of the rubber pad 2. Thread grooves are formed on both sides of the snap ring 10, and fixing bolts 11 are threadedly connected inside the thread grooves. One end of the outer surface of the fixing bolt 11 is slidably connected with a pressing plate 12. The middle of the back surface of the pressing plate 12 is fixedly connected with a spring 13. One end of the spring 13 is fixedly connected to the middle of the front surface of the snap ring 10. The spring 13 pushes the pressing plate 12 away from the wrench 28, which can prevent the pressing plate 12 from affecting the operation when the operator manually triggers the wrench 28. Subsequently, the fixing bolt 11 is screwed to drive the pressing plate 12 to approach the wrench 28 to squeeze the wrench 28, thereby limiting the wrench 28 to achieve continuous acquisition of images, avoiding hand fatigue caused by the operator's long-term pressing, resulting in jitter or misoperation during image capture, and thus effectively ensuring the accuracy of image acquisition.

[0033] The power supply component includes a base 14. The edge of the upper surface of the base 14 is clamped to the bottom end of the infrared thermal imager body 1. One side of the upper surface of the base 14 is fixedly connected with a first protective shell 15. The first protective shell 15 is threadedly connected with a second protective shell 16 through bolts on one side. A battery 17 is arranged inside the first protective shell 15 and the second protective shell 16. Square grooves are formed on the other side of the first protective shell 15 and one side of the second protective shell 16, and heat dissipation fins 18 are fixedly connected inside the square grooves. By installing the battery 17 inside the first protective shell 15 and the second protective shell 16 and clamping it to the bottom end of the infrared thermal imager body 1 through the base 14, it can be arranged inside the infrared thermal imager body 1. This method makes the disassembly very convenient, facilitating operation and replacement, and the provided heat dissipation fins 18 can increase the heat dissipation rate of the battery 17 to avoid danger caused by excessive heat.

[0034] Vertical plates 19 are fixedly connected to both sides of the upper surface of the infrared thermal imager body 1. A lens cover 20 is rotatably connected inside the vertical plates 19. A card slot adapted to the fixing frame 22 is formed on the upper surface of the lens cover 20. When not in use, the lens cover 20 can be flipped to the front surface of the infrared thermal imager body 1, and the card slot can be clamped to the outer surface of the fixing frame 22 to protect the high-transparency glass 23, preventing scratches on the high-transparency glass 23, which may cause blockage of the infrared lens 9 and affect the imaging quality. Moreover, this method has simple operation and can effectively ensure the operation efficiency.

[0035] At the top of the front surface of the infrared thermal imager body 1, there is a ring frame 21 fixedly connected. The outer surface of the ring frame 21 is clamped with a fixed frame 22. Inside the fixed frame 22, there is a high-transparency glass 23 fixedly connected. On the upper surface of the ring frame 21, there is a limiting rod 24 fixedly connected. On the upper surface of the fixed frame 22, there is a positioning groove adapted to it. Clamp the fixed frame 22 to the outer surface of the ring frame 21 and then rotate it so that the limiting rod 24 rotates to the corresponding position inside the positioning groove, and the fixed frame 22 can be connected to the ring frame 21 to prevent the fixed frame 22 from falling off. Through the high-transparency glass 23, the infrared lens 9 can be protected during use to prevent dust, etc. from contaminating it, making it difficult to clean it.

[0036] In the middle of the front surface of the infrared thermal imager body 1, there is a wrench 28. The front surface of the wrench 28 is in contact with the back surface of the pressing plate 12. The acquisition of the image can be controlled through the wrench 28.

[0037] At the top of the back surface of the infrared thermal imager body 1, there is a display screen 25. At the bottom of the display screen 25 on the back surface of the infrared thermal imager body 1, there are control buttons 26. The control buttons 26 facilitate the debugging of data, and the display screen 25 facilitates the viewing of the acquired images.

[0038] Ventilation grooves are opened at the bottom ends on both sides of the infrared thermal imager body 1. Heat dissipation grooves are opened at the positions corresponding to the rubber pads 2 on both sides. The ventilation grooves and the heat dissipation grooves correspond to the positions of the heat dissipation fins 18, which facilitates the export of the heat of the battery 17.

[0039] On the other side of the side surface of the infrared thermal imager body 1, there is an external connection port. Above the external connection port on the side surface of the infrared thermal imager body 1, there is a protective cover 27 plugged in. The protective cover 27 facilitates the protection of the external connection port, preventing dust and water stains from entering the inside of the infrared thermal imager body 1 through this place and affecting the normal use of the internal components.

[0040] Working principle: First, clamp the fixed frame 22 to the outer surface of the ring frame 21 and then rotate it so that the limiting rod 24 rotates to the corresponding position inside the positioning groove, and the fixed frame 22 can be connected to the ring frame 21 to prevent the fixed frame 22 from falling off. Through the high-transparency glass 23, the infrared lens 9 can be protected during use. Next, rotate the focusing disc 4 to drive the first bevel gear 5 to rotate through the first connecting rod 3, and then drive the driving disc 8 to rotate through the second bevel gear 6 and the second connecting rod 7 to focus the infrared lens 9. Secondly, screw the fixing bolt 11 to drive the pressing plate 12 to approach the wrench 28 to squeeze the wrench 28, thereby limiting the wrench 28 to achieve continuous acquisition of the image. Finally, when not in use, the lens cover 20 can be flipped to the front surface of the infrared thermal imager body 1, and the card slot can be clamped to the outer surface of the fixed frame 22 to protect the high-transparency glass 23.

[0041] The above front, back, left, right, up, and down are all based on the Figure 1 in the attached drawings of the specification. Taking the perspective of the person observing as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0043] The above has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld infrared thermal imager, characterized in that: It includes an infrared thermal imager body (1). An installation groove is provided on one side of the side surface of the infrared thermal imager body (1). A focusing component is rotatably connected inside the installation groove. A rubber pad (2) is fixedly connected to the bottom end of the front surface of the infrared thermal imager body (1). A limiting component is clamped to the top end of the front surface of the rubber pad (2). A power supply component is clamped to the bottom end of the infrared thermal imager body (1). The focusing component includes a first connecting rod (3). The outer surface of the first connecting rod (3) is rotatably connected inside the installation groove. One end of the first connecting rod (3) is fixedly connected to a focusing disc (4). The other end of the first connecting rod (3) is fixedly connected to a first bevel gear (5). A second bevel gear (6) is meshed with the outer surface of the first bevel gear (5). A second connecting rod (7) is fixedly connected to the front surface of the second bevel gear (6). A driving disc (8) is fixedly connected to the outer surface of the second connecting rod (7). An infrared lens (9) is meshed with the outer surface of the driving disc (8).

2. The handheld infrared thermal imager according to claim 1, characterized in that: The limiting component includes a snap ring (10). The inside of the snap ring (10) is clamped to the top end of the front surface of the rubber pad (2). Threaded grooves are provided on both sides of the snap ring (10). A fixing bolt (11) is threadedly connected inside the threaded grooves. One end of the outer surface of the fixing bolt (11) is slidably connected to a pressing plate (12). A spring (13) is fixedly connected to the middle of the back surface of the pressing plate (12). One end of the spring (13) is fixedly connected to the middle of the front surface of the snap ring (10).

3. The handheld infrared thermal imager according to claim 1, characterized in that: The power supply component includes a base (14). The edge of the upper surface of the base (14) is clamped to the bottom end of the infrared thermal imager body (1). A first protective shell (15) is fixedly connected to one side of the upper surface of the base (14). A second protective shell (16) is threadedly connected to one side of the first protective shell (15) through a bolt. A battery (17) is arranged inside the first protective shell (15) and the second protective shell (16). Square grooves are provided on the other side of the first protective shell (15) and one side of the second protective shell (16). Heat dissipation fins (18) are fixedly connected inside the square grooves.

4. A handheld infrared thermal imager according to claim 1, characterized in that: Vertical plates (19) are fixedly connected to both sides of the upper surface of the infrared thermal imager body (1). A lens cover (20) is rotatably connected inside the vertical plates (19).

5. A handheld infrared thermal imager according to claim 1, characterized in that: A circular frame (21) is fixedly connected to the top end of the front surface of the infrared thermal imager body (1). A fixing frame (22) is clamped to the outer surface of the circular frame (21). A high-transparency glass (23) is fixedly connected inside the fixing frame (22). A limiting rod (24) is fixedly connected to the upper surface of the circular frame (21). A positioning groove adapted to it is provided on the upper surface of the fixing frame (22).

6. The handheld infrared thermal imager according to claim 1, characterized in that: A wrench (28) is arranged in the middle of the front surface of the infrared thermal imager body (1). The front surface of the wrench (28) is in contact with the back surface of the pressing plate (12).

7. The handheld infrared thermal imager according to claim 1, wherein: At the top of the back of the infrared thermal imager body (1), a display screen (25) is provided, and at the bottom of the back of the infrared thermal imager body (1) and located below the display screen (25), control buttons (26) are provided.

8. A handheld infrared thermal imager according to claim 1, wherein: Ventilation slots are provided at the bottom ends on both sides of the infrared thermal imager body (1), and heat dissipation slots are provided at positions corresponding to both sides of the rubber pad (2).

9. The handheld infrared thermal imager according to claim 1, wherein: On the other side of the side of the infrared thermal imager body (1), an external connection port is provided, and a protective cover (27) is plugged above the external connection port on the side of the infrared thermal imager body (1).

Images