CN112763075A

CN112763075A - Handheld thermal imager

Info

Publication number: CN112763075A
Application number: CN202011571334.6A
Authority: CN
Inventors: 胡怀平
Original assignee: Hangzhou Chaoli Technology Co ltd
Current assignee: Hangzhou Chaoli Technology Co ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2021-05-07

Abstract

The invention discloses a handheld thermal imager, which comprises an assembly block, wherein a handle is fixedly installed at the upper end of the assembly block, a display screen is fixedly installed on one side of the assembly block, an installation groove is formed in the other side of the assembly block, a lens mount is slidably installed in the installation groove, an infrared objective lens is embedded in one end of the lens mount, a motor groove is formed in the top of the installation groove, an electric motor is fixedly clamped in the motor groove, a gear is fixedly installed at one end of an output shaft of the electric motor, the gear is meshed with a rack, a containing groove is formed in the bottom of the assembly block, a handle is rotatably installed in the containing groove, a connector is fixedly installed at one end of the handle, and the connector is detachably clamped with the side wall of the containing groove. The invention realizes automation, and has simple operation and convenient use; when being convenient for accomodate, operating personnel can keep away from the target and can realize surveying, has increased the security.

Description

Handheld thermal imager

Technical Field

The invention relates to the technical field of thermal imagers, in particular to a handheld thermal imager.

Background

Various objects in the nature show a certain temperature, the temperature of the object can often reflect the physical state of the object, and because the temperature change of different objects is very different and the measurement environment is very different, the contact method for measuring the temperature by using a thermometer and the like has great limitation, all objects with the temperature higher than absolute zero can generate infrared radiation, and the infrared radiation of the object is closely related to the surface temperature distribution of the object. The temperature of the surface of the object can thus be determined from the correspondence of the infrared radiation to the temperature by means of the measurement of the infrared radiation of the object.

An infrared thermal imager is a device that converts an image of the temperature distribution of a target object into a visible image by detecting the infrared radiation of the target object and applying signal processing, photoelectric conversion, and other means using an infrared thermal imaging technique. An operator preliminarily judges heating conditions and fault positions through image colors displayed on a screen and a hot spot tracking display function, and simultaneously strictly analyzes the heating conditions and the fault positions, so that high efficiency and high accuracy are reflected in problem confirmation, the infrared thermal imager used in the military field is continuously expanded to the civil and industrial fields in recent years, and the infrared thermal imager has been developed into a portable and portable device for field test from a heavy machine after decades of continuous development.

The optical lens of current thermal infrared imager does not have any safeguard measure, very easily takes place the contact with other objects to shorten its life, and current handheld thermal infrared imager often is because of equipment structure complicacy and bulky, therefore be unfavorable for accomodating and carrying, most can only use on one's body operating personnel through placing the equipment of being convenient for to remove or carrying through the mode that increases the braces, accomodate and carry very inconveniently, therefore we need propose a handheld thermal imager.

Disclosure of Invention

The invention aims to provide a handheld thermal imager, which is characterized in that an assembly block is provided with a mounting groove, a lens mount is arranged in the mounting groove in a sliding manner, and one end of the lens mount is embedded with an infrared objective lens, so that the infrared objective lens can slide in the mounting groove and can be stretched, the purpose that the lens can be contracted and the collision damage is avoided is achieved; the invention has the advantages that the bottom of the assembling block is provided with the accommodating groove, the handle is rotatably arranged in the accommodating groove, so that the handle can be rotatably clamped in the accommodating groove for accommodating, thereby achieving the purpose of convenient accommodating and carrying, and the handle is arranged to be the telescopic handle, so that the device is convenient for accommodating, meanwhile, the operator can be far away from the target to realize detection, the safety is improved, and the problems in the background art are solved.

In order to achieve the purpose, the invention provides the following technical scheme: a handheld thermal imager comprises an assembly block, wherein a handle is fixedly arranged at the upper end of the assembly block, a display screen is fixedly arranged on one side of the assembling block, an installation groove is arranged on the other side of the assembling block, a lens mount is arranged in the mounting groove in a sliding manner, an infrared objective lens is embedded at one end of the lens mount, the top of the mounting groove is provided with a motor groove, an electric motor is clamped and fixed in the motor groove, one end of the output shaft of the electric motor is fixedly provided with a gear, the top of the lens seat is fixedly provided with a rack, the sliding direction of the rack is the same as that of the lens seat, the gear is meshed with the rack, the bottom of the assembling block is provided with a containing groove, the handle is installed to the inslot rotation of accomodating, the one end fixed mounting of handle has the connector, the connector with accomodate the detachable joint of lateral wall in groove.

Preferably, one side of the assembly block is hinged with a protective cover through a first hinge, and the display screen is located in the protective cover.

Preferably, the lower extreme of protection casing rotates and is connected with first magnet piece, the bottom fixed mounting of equipment piece has the second magnet piece, first magnet piece corresponds the setting with the second magnet piece.

Preferably, the lower extreme of protection casing articulates through the second hinge has the turning block, first magnet piece fixed mounting is in the one end of turning block.

Preferably, the bottom of the mounting groove is provided with a sliding groove, the sliding groove is internally provided with a sliding block in a sliding manner, the lens mount is fixedly mounted at the upper end of the sliding block, and the sliding block is provided with two groups.

Preferably, two groups of damping bearings are symmetrically embedded in two side walls of the accommodating groove, rotating shafts are inserted in the damping bearings, and the handle is fixedly installed between the two groups of rotating shafts.

Preferably, the handle sets up to scalable handle, the connector is located the handle and keeps away from the one end of rotation axis, the interior top fixed mounting who accomodates the groove has the block rubber, set up the recess that corresponds with the connector on the block rubber, the connector be located the recess and with block rubber interference fit.

Preferably, the inside wall of the accommodating groove is provided with a ball groove, a spring is fixedly mounted in the ball groove, a ball is fixedly mounted at one end of the spring, an arc-shaped groove is formed in the connecting head, and the ball is clamped in the arc-shaped groove.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the assembly block is provided with the mounting groove, the lens mount is slidably mounted in the mounting groove, and one end of the lens mount is embedded with the infrared objective lens, so that the infrared objective lens can slide in the mounting groove and can stretch out and draw back, the purposes of shrinking the lens and avoiding collision damage are achieved;

2. according to the invention, the bottom of the assembling block is provided with the accommodating groove, and the handle is rotatably arranged in the accommodating groove, so that the handle can be rotatably clamped in the accommodating groove for accommodating, thereby achieving the purpose of convenient accommodation and carrying;

3. according to the invention, the arc-shaped grooves are formed in the ball and the connecting head, so that when the handle is accommodated in the arc-shaped grooves, the ball is under pressure, the spring drives the ball to contract towards the ball groove, the connecting head is clamped into the groove in the rubber block, the rubber block deforms at the moment, the connecting head is in interference fit with the rubber block and clamped, and the ball is clamped into the arc-shaped grooves through the spring meeting at the moment, so that the connecting head is further clamped and fixed, and the purpose of convenient accommodation is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic view of the grip of the present invention;

FIG. 4 is a schematic view of the chute of the present invention;

FIG. 5 is a schematic view of the rack of the present invention;

FIG. 6 is a schematic view of the ball of the present invention;

fig. 7 is an enlarged view at B in fig. 6.

In the figure: 1. assembling the blocks; 2. mounting grooves; 3. a lens mount; 4. an infrared objective lens; 5. a motor slot; 6. an electric motor; 7. a gear; 8. a rack; 9. a display screen; 10. a protective cover; 11. a first hinge; 12. a chute; 13. a slider; 14. a grip; 15. a connector; 16. a rubber block; 17. a rotating shaft; 18. a damping bearing; 19. a receiving groove; 20. a ball groove; 21. a spring; 22. a ball bearing; 23. an arc-shaped slot; 24. a second hinge; 25. rotating the block; 26. a first magnet block; 27. a second magnet block; 28. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a handheld thermal imager comprises an assembly block 1, wherein a handle 28 is fixedly mounted at the upper end of the assembly block 1, a display screen 9 is fixedly mounted on one side of the assembly block 1, a protective cover 10 is hinged to one side of the assembly block 1 through a first hinge 11, and the display screen 9 is positioned in the protective cover 10;

the protective cover 10 is arranged, so that the display screen 9 is easy to contact with other objects, the display screen 9 is protected from being broken easily, water and dust are prevented, the storage and carrying are facilitated, and the service life is prolonged; illustratively, the protective cover 10 may be made of transparent plastic, which not only protects the display screen 9, but also facilitates use of the thermal imager without opening the protective cover 10.

Further, the lower end of the protective cover 10 is rotatably connected with a first magnet block 26, the bottom of the assembly block 1 is fixedly provided with a second magnet block 27, and the first magnet block 26 and the second magnet block 27 are correspondingly arranged; the lower end of the protective cover 10 is hinged with a rotating block 25 through a second hinge 24, and a first magnet block 26 is fixedly arranged at one end of the rotating block 25;

the first magnet block 26 and the second magnet block 27 are correspondingly arranged, so that the lower end of the protective cover 10 can be attached to the bottom of the assembly block 1; illustratively, the second hinge 24 is configured as a damped hinge, model SC-610-1, damped torsion: rotation angle of 12.0. + -. 1.0 kgf/cm: 360 degrees rotations, life: 10000 times and the attenuation rate is not more than 20 percent.

The other side of the assembling block 1 is provided with a mounting groove 2, a lens mount 3 is slidably mounted in the mounting groove 2, specifically, the inner bottom of the mounting groove 2 is provided with a sliding groove 12, a sliding block 13 is slidably mounted in the sliding groove 12, the lens mount 3 is fixedly mounted at the upper end of the sliding block 13, and the sliding blocks 13 are provided with two groups; through having seted up mounting groove 2 on the equipment piece 1, slidable mounting has lens mount 3 in mounting groove 2, and the one end of lens mount 3 is inlayed and is equipped with infrared objective 4's design for infrared objective 4 can slide in mounting groove 2.

Illustratively, the infrared objective 4 is set to have a resolution of 640x480pix, the frame frequency is 8.5Hz and 50/60Hz, and the working waveband is 8-14 μm; thermal sensitivity: 0.02 ℃; the temperature measurement range is-20-500 ℃ spatial resolution: 1.3mrad, which can resolve objects of 1.3 × 10-3 × 100 ═ 0.13m ═ 13 cm over a distance of 100 m; the field angle: over 30 cm.

An infrared objective lens 4 is embedded in one end of the lens holder 3, a motor groove 5 is formed in the top of the mounting groove 2, an electric motor 6 is fixedly clamped in the motor groove 5, a gear 7 is fixedly mounted at one end of an output shaft of the electric motor 6, a rack 8 is fixedly mounted at the top of the lens holder 3, the sliding direction of the rack 8 is the same as that of the lens holder 3, the gear 7 is meshed with the rack 8, and an accommodating groove 19 is formed in the bottom of the assembling block 1; a gear 7 is fixedly arranged at one end of an output shaft of the electric motor 6, a rack 8 is fixedly arranged at the top of the lens holder 3, and the infrared objective 4 can automatically stretch and retract by matching the gear 7 with the rack 8, so that the automation is realized, and the operation is simple and the use is convenient;

exemplarily, the electric motor 6 is provided as a miniature dc geared motor, model ZWMD016016, voltage: 5VDC, material quality: hardware, direction of rotation: cw & ccw, gearbox return difference: 2 degrees or less, bearing: sintering a bearing, and axially shifting: less than or equal to 0.1mm, output shaft radial load: no more than 20N, input speed no more than 15000rpm, working temperature: -30 to-100 ℃.

The handle 14 is rotatably installed in the accommodating groove 19, specifically, two groups of damping bearings 18 are symmetrically embedded in two side walls of the accommodating groove 19, the rotating shafts 17 are inserted into the damping bearings 18, and the handle 14 is fixedly installed between the two groups of rotating shafts 17; a connector 15 is fixedly installed at one end of the handle 14, the handle 14 is a telescopic handle, the connector 15 is located at one end, away from the rotating shaft 17, of the handle 14, a rubber block 16 is fixedly installed at the inner top of the accommodating groove 19, a groove corresponding to the connector 15 is formed in the rubber block 16, and the connector 15 is located in the groove and is in interference fit with the rubber block 16; the bottom of the assembling block 1 is provided with the accommodating groove 19, the handle 14 is rotatably installed in the accommodating groove 19, so that the handle 14 can be rotatably clamped in the accommodating groove 19 for accommodating, and the purposes of convenient accommodating and carrying are achieved.

Furthermore, a ball groove 20 is formed in the inner side wall of the accommodating groove 19, a spring 21 is fixedly mounted in the ball groove 20, a ball 22 is fixedly mounted at one end of the spring 21, an arc-shaped groove 23 is formed in the connector 15, and the ball 22 is clamped in the arc-shaped groove 23;

seted up arc wall 23 on through ball 22 and connector 15, when making accomodate to arc wall 23 in the handle 14, ball 22 receives pressure, spring 21 drives ball 22 and contracts to ball groove 20 addendum, thereby make in the recess on connector 15 joint income rubber block 16, rubber block 16 produces deformation this moment, thereby make connector 15 and rubber block 16 interference fit, with connector 15 joint, and the ball passes through in spring 21 meeting talk joint advances arc wall 23 this moment, make connector 15 further joint fixed.

The working principle is as follows: before the infrared thermal imager is used, the temperature range needs to be determined, the temperature of a shot object needs to be determined, the working ambient temperature of the infrared thermal imager needs to be determined, the influence of the environment needs to be avoided during shooting, the direct irradiation of sunlight can bring great interference to shooting, the influence can be generated on equipment, and the optimal shooting in normal weather or high-temperature weather needs to be avoided as much as possible during shooting.

When the infrared objective lens telescopic device is used, the handle 14 is rotated out of the accommodating groove 19 and is held, the electric motor 6 is started, the infrared objective lens 4 extends to the outside of the mounting groove 2 for measurement, the mounting groove 2 is formed in the assembling block 1, the lens seat 3 is slidably mounted in the mounting groove 2, one end of the lens seat 3 is embedded with the infrared objective lens 4, the infrared objective lens 4 can slide in the mounting groove 2 and can be stretched, the purposes that the lens can be stretched and retracted and collision damage is avoided are achieved, the gear 7 is fixedly mounted at one end of the output shaft of the electric motor 6, the rack 8 is fixedly mounted at the top of the lens seat 3, the infrared objective lens 4 can be automatically stretched and retracted through the matching of the gear 7 and the rack 8, automation is achieved, and the;

the bottom of the assembling block 1 is provided with a containing groove 19, the containing groove 19 is rotationally provided with a handle 14, the handle 14 can be rotationally clamped in the containing groove 19 for containing, the arc-shaped groove 23 is arranged on the ball 22 and the connector 15, when the handle 14 is contained in the arc-shaped groove 23, the ball 22 is stressed, the spring 21 drives the ball 22 to contract towards the ball groove 20, so that the connector 15 is clamped in the groove on the rubber block 16, the rubber block 16 deforms at the moment, the connector 15 is in interference fit with the rubber block 16, the connector 15 is clamped, the ball can be clamped in the arc-shaped groove 23 through the spring 21 at the moment, the connector 15 is further clamped and fixed, the purposes of convenient containing and carrying are achieved, and the handle 14 is set to be a telescopic handle, so that when the device is loaded and convenient containing, an operator can keep away from a target to realize detection, the safety is increased.

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

Claims

1. A hand-held thermal imager, comprising an assembly block (1), characterized in that: the upper end fixed mounting of equipment piece (1) has handle (28), one side fixed mounting of equipment piece (1) has display screen (9), mounting groove (2) has been seted up to the opposite side of equipment piece (1), slidable mounting has lens holder (3) in mounting groove (2), the one end of lens holder (3) is inlayed and is equipped with infrared objective (4), motor groove (5) have been seted up at the top of mounting groove (2), motor groove (5) interior joint is fixed with electric motor (6), the one end fixed mounting of electric motor (6) output shaft has gear (7), the top fixed mounting of lens holder (3) has rack (8), the slip direction of rack (8) is the same with lens holder (3) slip direction, gear (7) and rack (8) meshing, accomodate groove (19) have been seted up to the bottom of equipment piece (1), accomodate groove (19) internal rotation and install handle (14), the one end fixed mounting of handle (14) has connector (15), connector (15) and the detachable joint of lateral wall of accomodating groove (19).

2. A handheld thermal imager according to claim 1, characterized in that: one side of the assembly block (1) is hinged to a protective cover (10) through a first hinge (11), and the display screen (9) is located in the protective cover (10).

3. A handheld thermal imager according to claim 2, characterized in that: the lower extreme of protection casing (10) is rotated and is connected with first magnet piece (26), the bottom fixed mounting of equipment piece (1) has second magnet piece (27), first magnet piece (26) corresponds the setting with second magnet piece (27).

4. A handheld thermal imager according to claim 3, characterized in that: the lower extreme of protection casing (10) articulates through second hinge (24) has turning block (25), first magnet piece (26) fixed mounting is in the one end of turning block (25).

5. A handheld thermal imager according to claim 1, characterized in that: spout (12) have been seted up to the interior bottom in mounting groove (2), slidable mounting has slider (13) in spout (12), lens mount (3) fixed mounting is in the upper end of slider (13), slider (13) are provided with two sets ofly.

6. A handheld thermal imager according to claim 1, characterized in that: two groups of damping bearings (18) are symmetrically embedded in two side walls of the accommodating groove (19), rotating shafts (17) are inserted in the damping bearings (18), and the handle (14) is fixedly arranged between the two groups of rotating shafts (17).

7. The handheld thermal imager of claim 6, wherein: handle (14) set up to scalable handle, connector (15) are located handle (14) the one end of keeping away from rotation axis (17), the interior top fixed mounting who accomodates groove (19) has rubber block (16), set up the recess that corresponds with connector (15) on rubber block (16), connector (15) are located the recess and with rubber block (16) interference fit.

8. The handheld thermal imager of claim 6, wherein: ball groove (20) have been seted up to the inside wall of accomodating groove (19), fixed mounting has spring (21) in ball groove (20), the one end fixed mounting of spring (21) has ball (22), arc wall (23) have been seted up on connector (15), ball (22) joint is in arc wall (23).