WO2019085566A1 - 一种热成像设备 - Google Patents

一种热成像设备 Download PDF

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Publication number
WO2019085566A1
WO2019085566A1 PCT/CN2018/098470 CN2018098470W WO2019085566A1 WO 2019085566 A1 WO2019085566 A1 WO 2019085566A1 CN 2018098470 W CN2018098470 W CN 2018098470W WO 2019085566 A1 WO2019085566 A1 WO 2019085566A1
Authority
WO
WIPO (PCT)
Prior art keywords
trigger
lens
thermal imaging
imaging apparatus
disposed
Prior art date
Application number
PCT/CN2018/098470
Other languages
English (en)
French (fr)
Inventor
唐军
Original Assignee
杭州海康威视数字技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201721417322.1U external-priority patent/CN207458823U/zh
Priority claimed from CN201721704316.4U external-priority patent/CN207439552U/zh
Priority claimed from CN201820032982.6U external-priority patent/CN207833086U/zh
Application filed by 杭州海康威视数字技术股份有限公司 filed Critical 杭州海康威视数字技术股份有限公司
Priority to ES18874236T priority Critical patent/ES2960005T3/es
Priority to EP18874236.5A priority patent/EP3674766B1/en
Priority to US16/648,960 priority patent/US11644637B2/en
Publication of WO2019085566A1 publication Critical patent/WO2019085566A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
    • H04N23/23—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only from thermal infrared radiation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms

Definitions

  • the present application relates to the field of imaging technology, and in particular to a thermal imaging device.
  • the focus wheel and the lens are in a locked state.
  • the lens is moved back and forth by rotating the focus wheel to achieve focusing.
  • the focus wheel moves back and forth along with the lens, then the focus wheel is in different positions each time the focus is adjusted, and the corresponding focus wheel needs to be found, and the focus can be adjusted by rotating the focus wheel. , making the experience of the entire product decline.
  • focusing refers to a process of changing the distance of the lens optical center plane to obtain a clear image of the object.
  • Embodiments of the present application provide a thermal imaging apparatus such that during the focusing process, the focus wheel is always maintained at a set axial position to improve the use experience.
  • thermo imaging device includes:
  • a housing including a front housing
  • a lens holder fixedly coupled to the front case, and a gasket is disposed between the front case and the lens holder;
  • a manual lens focusing structure comprising a focusing wheel and an axial positioning structure, wherein the focusing wheel is connected to the lens in a synchronous rotation and a relative axial movement; the axial positioning structure is The focus wheel is axially positioned.
  • the axial positioning of the focus wheel is set, and the focus wheel is matched with the lens in the thermal imaging apparatus.
  • the focus wheel rotates, the lens is rotated to achieve focusing.
  • the lens moves axially relative to the focus wheel, and the focus wheel does not move axially because of the axial positioning structure. In this way, the product experience is greatly enhanced, while ensuring that the overall shape of the appearance is not affected during the focusing process.
  • FIG. 1 is a schematic exploded view of a thermal imaging apparatus according to an embodiment of the present application.
  • FIG. 2 is a schematic partial cross-sectional view of a thermal imaging apparatus according to an embodiment of the present application
  • Figure 3 is a partial enlarged view of Figure 2;
  • FIG. 4 is a schematic view showing an assembly manner of a lens holder and a lens according to an embodiment of the present application
  • FIG. 5a is a schematic exploded view of a limiting seat assembly according to an embodiment of the present application.
  • Figure 5b is a schematic cross-sectional view of the limiter assembly of the embodiment of the present application.
  • FIG. 6 is a schematic diagram of a mounting manner of a limiting seat assembly according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a mounting manner of a focus wheel according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a focus limit position according to an embodiment of the present application.
  • FIG. 9 is a schematic view showing a mounting manner of a hand wheel rubber, a front cover, and the like according to an embodiment of the present application.
  • FIG. 10 is a schematic perspective view of a manual lens focusing structure according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a thermal imaging apparatus according to another embodiment of the present application.
  • FIG. 12 is a schematic exploded view of a thermal imaging apparatus according to another embodiment of the present application.
  • FIG. 13 is a schematic structural view of a mounting screen of a rear case according to an embodiment of the present application.
  • FIG. 14 is a schematic structural view of a hood according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of fastening a first fastening portion and a second fastening portion according to an embodiment of the present application
  • 16 is a schematic structural view showing a sealing member provided in a first fastening portion according to an embodiment of the present application
  • FIG. 17 is an exploded perspective view of an embodiment of a trigger button assembly according to an embodiment of the present application.
  • FIG. 18 is a schematic structural view of another perspective view of the trigger button assembly of FIG. 17 assembled;
  • 19a is a schematic view showing the assembly of the trigger holder, the sealing gasket, the button structure and the PCB board gasket in the trigger button assembly of FIG. 17;
  • Figure 19b is a schematic view of the trigger holder, sealing gasket, button structure and PCB board gasket of Figure 19a assembled;
  • Figure 19c is a schematic view showing the assembly of the assembled assembly of Figure 19b and the trigger, rotary joint and torsion spring of the trigger button assembly of Figure 17;
  • Figure 19d is a schematic view of the trigger button assembly of Figure 19c assembled
  • Figure 19e is an assembled view of the trigger button assembly of Figure 19d assembled to the housing;
  • Figure 19f is a schematic view of the trigger button assembly and housing of Figure 19e assembled into a thermal imaging device
  • 19g is a schematic structural view of a thermal imaging apparatus according to still another embodiment of the present application.
  • Trigger mount 191 Trigger mounting lug 20 trigger 192 Screw mounting hole for trigger mount 201 Trigger shaft mounting hole 211 Torsion arm of torsion spring 212 Trigger arm positioning hole 231 Button PCB board mounting through hole 232 The first side of the button PCB 233 The second side of the key PCB board 234 Key switch board switch contact 235 socket 241 Pad 242 Pressing the protrusion 243 Mounting column 244 Flange a Gradient section of the flange
  • FIG. 1 is a schematic exploded view of the thermal imaging device of the embodiment of the present application.
  • 2 is a schematic partial cross-sectional view of a thermal imaging apparatus according to an embodiment of the present application.
  • Fig. 3 is a partial enlarged view of Fig. 2;
  • a thermal imaging apparatus according to an embodiment of the present application includes: a housing 3 (including a front housing 31), a lens holder 1, a lens 4, and a manual lens focusing structure, which is manually used in an embodiment of the present application.
  • the lens focusing structure includes a focus wheel 8 and an axial positioning structure.
  • the focus wheel 8 and the lens 4 are connected to each other in such a manner as to rotate synchronously and to move relative to the axial direction.
  • the focus wheel 8 is coupled to the lens 4 in a synchronous rotation manner by a keyway engagement. That is to say, the focus wheel 8 can drive the lens 4 to rotate, and convert the rotation of the lens 4 into an axial motion, thereby achieving focusing.
  • any suitable structure may be employed to achieve a synchronous rotation between the focus wheel and the lens but a relatively axially movable connection.
  • a structure such as a flat key or a spline can be employed. Both the flat key and the spline are axially set.
  • radial projections e.g., splines
  • radially concave grooves e.g., spline grooves
  • a groove circumferentially aligned is provided on the outer circumference of the lens and on the focus wheel, and a key is provided in the groove.
  • lubricating oil or grease is provided between the focus wheel and the lens, particularly at the aforementioned keyway mating structure.
  • the axial positioning structure axially positions the focus wheel 8, and prevents the axial movement of the focus wheel 8 during the rotation of the focus wheel 8. That is to say, the focus wheel 8 only rotates, but does not perform axial movement. In other words, during the focusing process, the focus wheel 8 rotates synchronously with respect to the lens, but does not move axially with the lens.
  • the axial positioning of the focusing wheel is set, and the focusing wheel and the lens are matched by the guiding motion of the key groove.
  • the lens moves axially through the cooperation of the keyway, and the focus wheel does not have axial movement because of the front and rear limits.
  • the lens 4 can be any suitable lens.
  • the thermal imaging device can be a handheld infrared camera, and the lens 4 can be an infrared lens disposed on the handheld infrared camera.
  • a hand wheel rubber 10 is provided on the focus wheel 8.
  • a decorative ring 9 can be provided on the focus wheel 8. Both the hand wheel rubber 10 and the decorative ring 9 are sleeved on the radially outer circumference of the focus wheel 8. A plurality of axially extending stripes are provided on the outer circumference of the hand wheel rubber 10 to improve the friction. In fact, when manual focusing is performed, the operator turns the hand wheel rubber 10, thereby causing the focusing wheel 8 to rotate the lens 4.
  • the inner wall of the focus wheel 8 is provided with an axial straight groove 81 which cooperates with a key 41 provided on the outer circumference of the lens 4, and the key 41 can be axially grooved 81. Inner axial sliding.
  • the engagement of the axial straight groove 81 of the focus wheel 8 with the key 41 of the lens 4 causes the focus wheel 8 and the lens 4 to be synchronized in rotation, but the two are relatively axially movable.
  • the specific shape of the key 41 can be set as needed.
  • the number of the axial straight grooves 81 and the keys 41 may also be set as needed, and is not limited to the arrangement in which the three circumferential uniform distribution key grooves are used in the illustrated embodiment of the present application.
  • the key 41 is disposed on the outer circumference of the lens 4 in an integral structure. It is also possible to provide a groove on the outer circumference of the lens 4, and to arrange the key 41 in the groove and protrude from the groove.
  • the rear end surface of the lens 4 cooperates with the lens holder 1 to form a rear axial limit of the lens 4 (at B in FIG. 8 ); the key 41 of the lens 4 and the focus wheel 8
  • the axial limit portion cooperates to form a front axial limit of the lens 4 (at A in Fig. 8).
  • the rear axial limit and the front axial limit limit limit the maximum axial movement range of the lens 4, that is to say the maximum focus range is defined.
  • Other configurations can also be used to achieve the focus range limitation.
  • the focusing limit is generally achieved by a screw and a slot.
  • the rear end surface of the lens is matched with the lens holder, and the focus wheel and the lens are matched by a keyway.
  • the axial positioning structure includes a limiting seat 5 and a rotating ring 6.
  • the limit seat 5 can be fixedly mounted to the front case 31 by the second screw 13; the limit seat 5 can also be fixed to other components of the thermal imaging device.
  • the rotating ring 6 is rotatably sleeved on the radially outer side of the limiting seat 5. The axial position of the rotating ring 6 with respect to the limiting seat 5 is defined.
  • the focus wheel 8 is integrated with the rotating ring 6, thereby limiting the axial movement of the focus wheel 8.
  • the grease groove 51 may be provided on the radially outer periphery of the stopper seat 5.
  • Grease tank 51 may be provided with grease for lubricating the rotation of the rotation ring 6 when the rotation of the rotation ring 6 is sleeved to the limit seat 5; the grease groove 51 may also be provided with damping grease.
  • the damping is too small during the process of the rotation of the rotating ring 6 to the limiting seat 5, which provides damping for the rotation of the rotating ring 6.
  • Specific parameters such as the position, width, depth, and number of the grease groove 51 can be set as needed.
  • the limit seat 5 includes an outer peripheral wall, an inner peripheral wall, and an annular plate connecting the outer peripheral wall and the inner peripheral wall.
  • the rotating ring 6 is rotatably sleeved radially outward of the outer peripheral wall of the limiting seat 5.
  • the annular plate is provided with a mounting through hole, and the second screw 13 is connected to the housing of the image forming apparatus through the mounting through hole, and may also be connected to the lens mount 1.
  • the axial positioning structure may also include a pressure ring 7.
  • the pressing ring 7 is screwed to one end of the limiting seat 5, and the other end of the limiting seat 5 is provided with a radially expanding portion 52.
  • the rotating ring 6 is sandwiched between the pressing ring 7 and the radially expanding portion 52 of the limiting seat 5 in the axial direction.
  • the rotating ring 6 is sleeved on the outer circumference of the limiting seat 5 and is rotatable relative to the rotating ring 6.
  • the pressure ring 7 is screwed to the external thread of the end of the limiting seat 5 to form an axial limit on the rotating ring 6.
  • the distance between the pressing ring 7 and the radially expanding portion of the limiting seat 5 is slightly larger than the axial dimension of the rotating ring 6.
  • the difference between the distance and the axial dimension is appropriately set to ensure smooth rotation of the rotating ring 6 and no axial shaking.
  • the difference between the distance and the axial dimension is between 0.05 mm and 0.5 mm.
  • the focus wheel 8 is fixedly coupled to the rotating ring 6 by a radially extending fastening screw 14.
  • a radially extending fastening screw 14 is provided.
  • three circumferentially evenly distributed fastening screws 14 are provided.
  • the lens holder 1 and the front case 31 are fixed by the first screw 12; the lens 4 is screwed into the lens holder 1 to form a first assembly.
  • the gasket 2 is sandwiched between the lens mount 1 and the front case 31.
  • the lens mount 1 is internally threaded and the lens 4 is externally threaded.
  • the external thread of the lens 4 is engaged with the internal thread of the lens holder 1.
  • the limiting seat 5, the rotating ring 6, and the pressing ring 7 are assembled into a second assembly to ensure smooth rotation of the rotating ring 6 without axial shaking.
  • the second component is assembled and fixed to the first component, see FIG. Specifically, the stopper seat 5 is fixedly coupled to the front case 31 or the lens holder 1 by the second screw 13.
  • the straight groove 81 of the focus wheel 8 is engaged with the key 41 of the lens 4, and after being guided in, the focus wheel 8 is sleeved on the rotating ring 6.
  • the focus wheel 8 is then fastened to the rotating ring 6 using a radially extending fastening screw 14. Thereby, the focus wheel 8 will drive the rotating ring 6 to rotate integrally.
  • the above manual lens focusing structure can be used for various imaging devices or detecting devices that require focusing.
  • One particular application is a handheld infrared camera that includes the manual lens focusing structure described above.
  • the handheld infrared camera includes: a front case 31; a lens mount 1; a lens 4, a focus wheel 8, and an axial positioning structure.
  • the front case 31 is part of the outer casing of the entire handheld infrared camera and cooperates with the front cover 11 to define an accommodation space.
  • the manual lens focusing structure described above is generally accommodated in the accommodating space.
  • the lens mount 1 is fixedly coupled to the front case 31, and specifically, the lens mount 1 is fixed to the front case 31 by the first screw 12.
  • a gasket 2 is disposed between the front case 31 and the lens holder 1 to prevent moisture or the like from entering the internal space.
  • the lens 4 is screwed to the lens mount 1, and specifically, the lens 4 is screwed into the lens mount 1.
  • the focus wheel 8 is coupled to the lens 1 in a synchronized rotation manner by a keyway engagement.
  • the connection between the focus wheel and the lens 1 can be achieved using various suitable keyway structures. As long as it is possible to realize the function of making the focus wheel 8 and the lens 4 synchronous in rotation, the two can move relative to each other in the axial direction.
  • the axial positioning structure axially positions the focus wheel 8, and any of the specific structures described above may be employed.
  • Thermal imaging devices typically also include a display screen and a hood that shields the display from light. By setting the hood, it can effectively block the light under strong illumination, and avoid direct light to the display, so as to avoid the light affecting the human eye to observe the image of the display.
  • the hood and the housing are usually arranged in a unitary structure.
  • the light intensity is weak on a cloudy day or indoors
  • the hood is not required, the hood cannot be detached from the casing, which affects the use of the thermal imaging device.
  • the thermal imaging apparatus of another embodiment of the present application may include a setting other than the housing 3, the lens holder 1, the lens 4, and the manual lens focusing structure as shown in FIG.
  • the inside of the casing 3 is provided with an electronic device 17, and the display screen 15 is electrically connected to the electronic device 17.
  • the outer portion of the casing 3 is provided with a first fastening portion 33
  • the second shielding portion 163 is disposed on the hood 16 .
  • the hood 16 When the hood 16 is required to be used, the hood 16 is fixed to the casing 3 by the first hook portion 33 and the second hook portion 163. When the hood 16 is not required to be used, the second hook portion 163 is withdrawn from the first hook portion 33, and the hood 16 is detached from the casing 3.
  • the detachable connection between the housing 3 and the hood 16 can be achieved by providing the first latching portion 33 and the second latching portion 163.
  • the hood 16 can be detached from the casing 3, thereby reducing the influence of the hood 16 on the image measuring instrument.
  • the components of the thermal imaging apparatus can have a variety of configurations.
  • the specific embodiments are taken as an example to describe in detail the structure of the components of the thermal imaging apparatus.
  • the housing 3 may include a front case 31 and a rear case 32, wherein the display screen 15 and the hood 16 are disposed on the rear case 32.
  • a groove may be disposed on the front shell 31, a convex rib may be disposed on the rear shell 32, and the rear shell 32 is fixed to the front shell 31 through the groove and the rib to improve the installation convenience.
  • the rear case 32 is provided with a convex edge 34 projecting rearward (the rear direction away from the front case 31), the convex edge 34 and the display screen 15 are disposed on the same surface of the rear case 32, and the convex edge 34 surrounds the rear case
  • the outer circumference of the 32 is set.
  • the curved shape of the inner and outer surfaces of the flange 34 is the same as the curved shape of the side surface of the rear case 32.
  • a first hooking portion 33 is provided on the flange 34.
  • the first fastening portion 33 is preferably used as a card slot for convenient processing.
  • the number of the first fastening portions 33 is the same as the number of the second fastening portions 163, and each of the first fastening portions 33 is engaged with a different second fastening portion 163.
  • the flange 34 can be bonded to the rear case 32 to facilitate the provision of a seal 18 (shown in Figure 16) in the card slot to reduce the likelihood of dust, moisture, etc. entering the housing 3.
  • the shape of the inner surface of the flange 34 may be the same as the shape of the outer surface of the contact portion of the rear case 32, and has a certain curvature.
  • the seal 18 may be a sealing block or the like which is bonded to the flange 34 and the rear case 32 by an adhesive.
  • the electronic device 17 includes a movement 171 and a battery 172.
  • the display screen 15 is coupled to the movement 171, and the movement 171 is coupled to the battery 172.
  • the movement 171 is mounted on the front case 31, and the battery 172 is mounted at the handle position of the case 3.
  • the hood 16 includes an upper cover 161 that is disposed above the display screen 15 and a side cover 162 that is connected to the upper cover 161 at the upper end and that is disposed on the side of the display screen 15.
  • a side cover 162 is respectively disposed at both ends of the upper cover 161, and the upper cover 161 and the side cover 162 smoothly transition at the joint portion.
  • the upper cover 161 and the side cover 162 are both plate-like structures, and the outer surface of the upper cover 161 and the outer surface of the side cover 162 may have a certain curvature. After the hood 16 is fixed on the casing 3, the outer surface of the upper cover 161 and the outer surface of the side cover 162 are respectively in contact with the inner surface of the convex portion 34 of the corresponding portion of the casing 3 so as to be shielded by the convex edge 34. The cover 16 improves the fixing firmness of the hood 16.
  • the material of the hood 16 may be selected from materials capable of deformation, such as engineering plastic materials, to facilitate the insertion of the second fastening portion 163 into the first fastening portion 33.
  • the color of the hood 16 can be made black, and the matte paint is sprayed on the inner side, which can effectively avoid the illumination to the inside of the hood 16, so that the reflection on the display screen 15 affects the human eye to observe the image.
  • the second fastening portion 163 may be a lug, a substantially rectangular flat plate structure.
  • a second fastening portion 163 is disposed on both the upper cover 161 and the side cover 162 to improve the firmness of the hood 16 to the housing 3.
  • Two second fastening portions 163 may be disposed on the upper cover 161, and the two second fastening portions 163 are respectively adjacent to both ends of the upper cover 161.
  • a second fastening portion 163 is disposed on each side cover 162, and the second fastening portion 163 of the side cover body 162 is adjacent to the lower end of the side cover body 162 (wherein the lower end of the side cover body 162 is opposite to the upper end).
  • the second fastening portion 163 is perpendicular to the surface of the hood 16 on which the hood 16 is located, that is, the second fastening portion 163 on the upper cover 161 is perpendicular to the surface of the upper cover 161 on which the side cover 162 is located.
  • the second fastening portion 163 is perpendicular to the surface of the side cover 162 on which it is located to facilitate the engagement of the second fastening portion 163 into the first fastening portion 33.
  • the vertical here is not an absolute 90 degrees, but may be slightly greater than 90 degrees (eg, 93 degrees) or slightly less than 90 degrees (eg, 85 degrees).
  • the orientation of each of the second fastening portions 163 may be the same, for example, toward the rear of the housing 3, to facilitate the installation of the hood 16.
  • the two side covers 162 of the hood 16 are grasped, and the two side covers 162 are biased toward each other.
  • the two side covers 162 are bent and deformed toward each other, and the upper cover 161 is also generated. Bending deformation.
  • the second fastening portion 163 of the upper cover 161 is engaged with the corresponding first fastening portion 33, and then the force applied to the side cover 162 is cancelled, the hood 16 is undeformed, and the second cover 162 is second.
  • the latching portion 163 also snaps into the corresponding first latching portion 33, thereby completing the mounting of the hood 16.
  • the two side covers 162 of the hood 16 are grasped, and opposing forces are applied to the two side covers 162, and the two side covers 162 are bent and deformed toward each other.
  • the second hooking portion 163 of the side cover body 162 is disengaged from the first hooking portion 33.
  • the second hook portion 163 of the upper cover 161 is detached from the first hook portion 33, and the hood 16 can be removed.
  • the hood can be detachably connected to the housing through the first fastening portion and the second fastening portion.
  • the hood can be detached from the casing, thereby reducing the possibility that the hood affects the use of the camera.
  • a trigger button component is generally provided, and the control circuit is turned on or off by operating the trigger button component, thereby achieving the purpose of controlling the operation of the thermal imaging device.
  • the trigger button component generally adopts a linear pressing manner, and touches the tact switch or the stroke switch inside the trigger button structure.
  • the reset after the trigger is released is mostly realized by a soft rubber or a spring, and the linear motion type button structure is easily stuck.
  • the internal spring will significantly reduce the feedback feeling of the button, thereby causing poor button experience of the entire trigger button component, affecting the human-machine experience of the entire product.
  • the trigger button assembly provided by the embodiment of the present application includes a trigger holder 19, a trigger 20, a button structure and a rotary connecting member 22.
  • the button structure is disposed on the trigger holder 19 and the trigger 20
  • the circuit can be turned on or off by pressing the trigger 20.
  • One end of the trigger 20 is provided on the trigger mount 19 by a rotary joint 22.
  • one end of the trigger 20 is connected to the trigger fixing seat 19 by using the rotating connecting member 22, so that the trigger 20 is movably engaged with the trigger fixing seat 19 through the rotating connecting member 22, so that the trigger 20 is pressed and then touches the button in a rotating manner.
  • the structure can effectively improve the pressing feel of the trigger 20, thereby achieving the effect of improving the trigger button experience.
  • the rotating link 22 can include a rotating shaft.
  • a trigger mounting lug 191 is disposed on a side of the triggering trigger 20 of the trigger fixing base 19, and two rotating trigger mounting lugs 191 are provided with a rotating shaft mounting hole 192, and correspondingly, one end of the trigger 20 A shaft mounting hole 201 is opened.
  • the rotating shaft mounting hole 192 of the trigger fixing base 19 is aligned with the rotating shaft mounting hole 201 of the trigger 20, and one end of the rotating shaft is inserted into the rotating shaft mounting hole of the other side from the rotating shaft mounting hole of one side.
  • Both ends of the rotating shaft are rotatably mounted in the mounting holes of the trigger fixing base 19 and the trigger 20 so that the other end of the trigger 20 is rotatable about the rotating shaft.
  • the rotating shaft can be made of a material with excellent wear resistance and oxidation resistance, and is wear-resistant and has a long service life.
  • the trigger button assembly may further include a reset member disposed between the trigger mount 19 and the trigger 20 to provide an elastic force for the trigger 20 to be restored and held in the initial position after being pressed, and the trigger 20 is spaced from the button structure at the initial position. Therefore, the trigger 20 is released in time after being pressed down, and is detached from the switch contact portion of the button structure to avoid erroneously triggering the switch contact portion of the button structure.
  • the size of the interval between the initial position of the trigger 20 and the button structure can be determined according to actual conditions.
  • the reset member includes a torsion spring 21 that is sleeved outside the portion of the rotating shaft between the mounting holes of the rotating shaft, and the twisting arms 211 at both ends of the torsion spring 21 are respectively abutted to the trigger.
  • the seat 19 and the trigger 20 in particular, the torsion arm 211 at one end of the torsion spring 21 is inserted into the twisting arm positioning hole 212 of the trigger 20, and the twisting arm 211 at the other end of the torsion spring 21 is inserted into the twisting arm positioning hole of the trigger fixing seat 19 ( Inside the figure, the trigger 20 is held in the initial position to provide an elastic force.
  • the reverse force provided by the torsion spring 21 allows the user to more clearly feel the resetting action of the trigger 20, which is advantageous for improving the trigger button experience.
  • the button structure is a button PCB (English name is Printed Circuit Board), and the button PCB board 23 can be directly purchased from the market.
  • the trigger button assembly further includes a PCB board gasket 24 that is bonded to one side of the button PCB board 23 by a sealant (such as 3M glue or the like). Through the PCB board gasket 24, it is possible to prevent water accumulated in the trigger 20 from entering the key PCB board 23, and to ensure the electrical performance of the key PCB board 23.
  • the PCB board gasket 24 may be made of a rubber material and includes a spacer 241. One side of the spacer 241 is bonded to the first side 232 where the switch contact portion of the button PCB board 23 is located by a sealant, and the spacer 241 is further The pressing protrusion 242 is provided on one side, and the pressing protrusion 242 is aligned or corresponding to the position of the switch contact portion 234 of the key PCB board 23, so that the switch contact portion 234 of the key PCB board 23 can be biased by being pressed by the trigger 20.
  • the key PCB board 23 may be provided with mounting through holes 231, for example, one mounting through hole 231 is formed at each of the four corners of the key PCB board 23.
  • the side surface of the first side surface 232 of the bonding pad PCB 231 is provided with a mounting post 243.
  • the outer side wall of the mounting post 243 is provided with a flange 244 having a diameter larger than the diameter of the mounting through hole 231, and the flange 244 is from the key PCB board.
  • the first side 232 of the second side 232 passes through the mounting through hole 231 and is pressed against the second side surface 233 of the key PCB board 23 which is different from the first side 232 toward the key PCB board 23.
  • the second side 233 of the button PCB board 23 is provided with a socket 235 for making an electrical connection with a motherboard in the thermal imaging apparatus. After the switch contact 234 is pressed, the socket 235 turns on or off the circuit formed between the main board in the thermal imaging apparatus.
  • the flange 244 can include a tapered section a having an outer diameter that gradually increases from the outside and the inside relative to the spacer 241. This configuration facilitates the fastening force for the bonding of the PCB board gasket 24 and the key PCB board 23 when the PCB board gasket 24 is assembled to the first side 232 of the key PCB board 23.
  • a thermal imaging apparatus includes, in addition to the housing 3, the lens holder 1, the lens 4, and the manual lens focusing structure as shown in FIG.
  • a trigger button assembly may also be included.
  • the trigger holder 19 of the trigger button assembly can be fixedly connected to the housing 3 by a bolt member, and a sealing washer 25 is disposed between the trigger holder 19 and the housing 3 to waterproof the housing 3.
  • the shape of the sealing gasket 25 can be selected according to the size of the trigger holder 19.
  • the material can be selected from the sealing material on the market.
  • the embodiment of the present application connects one end of the trigger to the trigger fixing seat by using the rotating connecting member, the trigger is movably engaged with the trigger fixing seat through the rotating connecting member, so that the trigger is pressed and then the rotating button structure is touched, which can effectively improve The trigger feel of the trigger to achieve the effect of increasing the trigger button experience.

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Abstract

一种热成像设备，包括：壳体（3），包括前壳（31）；镜头座（1），固定连接至前壳（31），且在前壳（31）与镜头座（1）之间设置有密封垫（2）；镜头（4），与镜头座（1）螺纹连接；手动镜头调焦结构，包括调焦轮（8）及轴向定位结构，其中，调焦轮（8）与镜头（4）以同步转动、相对轴向运动的方式相互连接；轴向定位结构，对调焦轮（8）进行轴向定位。在调焦过程中，镜头（4）相对于调焦轮（8）轴向移动，而调焦轮（8）因轴向定位结构而不会有轴向的移动，这样增强了产品的使用体验，同时保证了外观的整体形态在调焦过程中不受影响。

Description

一种热成像设备
本申请要求于2017年10月30日提交中国专利局、申请号为201721417322.1、发明名称为“一种扳机按键组件及具有其的热成像设备”，于2017年12月08日提交中国专利局、申请号为201721704316.4、发明名称为“一种手持红外测像仪”，以及于2018年01月09日提交中国专利局、申请号为201820032982.6、发明名称为“一种手动调焦镜头结构及一种手持红外测像仪”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及成像技术领域，特别是涉及一种热成像设备。
背景技术
对于热成像设备，例如手持红外测像仪，一般情况下，调焦轮与镜头处于锁死状态，在手动调焦时，通过对调焦轮的转动，带动镜头前后移动，从而实现调焦。
在这种调焦方式中，调焦轮与镜头一起前后移动，则在每次调焦时，调焦轮都在不同位置，需要对应的找到调焦轮，通过转动调焦轮才能实现调焦，使得整个产品的使用体验下降。
发明内容
本申请实施例中，调焦是指改变镜头光心到底片平面的距离，以获得物体清晰像的调节过程。
本申请实施例提供一种热成像设备，使得在进行调焦的过程中，调焦轮始终保持在设定的轴向位置，以提高使用体验。
本申请实施例提供了一种热成像设备，所述热成像设备包括：
壳体，包括前壳；
镜头座，固定连接至所述前壳，且在所述前壳与所述镜头座之间设置有密封垫；
镜头，与所述镜头座螺纹连接；
手动镜头调焦结构，包括调焦轮及轴向定位结构，其中，所述调焦轮，与所述镜头以同步转动、相对轴向运动的方式相互连接；所述轴向定位结构，对所述调焦轮进行轴向定位。
在本申请实施例的热成像设备中，设置对调焦轮的轴向定位，并让调焦轮与热成像设备中的镜头相配合。这样在调焦轮转动时，带动镜头转动，进而实现调焦。在调焦过程中，镜头相对于调焦轮轴向移动，而调焦轮因为存在轴向定位结构而不会有轴向的移动。这样，大大增强产品的使用体验，同时保证了外观的整体形态在调焦过程中不受影响。
附图说明
为了更清楚地说明本申请和现有技术的技术方案，下面对实施例和现有技术中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一实施例的热成像设备的示意性分解图；
图2为本申请一实施例的热成像设备的的示意性局部剖视图；
图3为图2的局部放大图；
图4为本申请实施例的镜头座与镜头的装配方式的示意图；
图5a为本申请实施例的限位座组件的示意性分解图；
图5b为本申请实施例的限位座组件的示意性剖视图；
图6为本申请实施例的限位座组件安装方式的示意图；
图7为本申请实施例的调焦轮的安装方式的示意图；
图8为本申请实施例的调焦限位位置的示意图；
图9为本申请实施例的手轮橡胶、前罩等的安装方式的示意图；
图10为本申请实施例的手动镜头调焦结构的示意性立体图；
图11为本申请另一实施例的热成像设备的结构示意图；
图12为本申请另一实施例的热成像设备的爆炸示意图；
图13为本申请实施例的后壳的安装显示屏一方的结构示意图；
图14为本申请实施例的遮光罩的结构示意图；
图15为本申请实施例的第一卡扣部和第二卡扣部扣合的结构示意图；
图16为本申请实施例的在第一卡扣部设置密封件的结构示意图；
图17为本申请实施例的扳机按键组件一实施例的分解示意图；
图18为图17中的扳机按键组件组装好后的另一视角的结构示意图；
图19a为图17的扳机按键组件中的扳机固定座、密封垫圈、按键结构和PCB板密封垫的装配示意图；
图19b为图19a中的扳机固定座、密封垫圈、按键结构和PCB板密封垫组装好后的示意图；
图19c为图19b组装好后的组件与图17中的扳机按键组件的扳机、转动连接件和扭簧的装配示意图；
图19d为图19c的扳机按键组件组装好后的示意图；
图19e为图19d中的扳机按键组件组装到壳体上的装配示意图；
图19f为图19e中的扳机按键组件和壳体组装成热成像设备的示意图；
图19g为本申请又一实施例的热成像设备的结构示意图。
附图标记：
1 镜头座 21 扭簧
2 密封垫 22 转动连接件
3 壳体 23 按键PCB板
4 镜头 24 PCB板密封垫
5 限位座 25 密封垫圈
6 转动圈 31 前壳
7 压圈 32 后壳
8 调焦轮 33 第一卡扣部
9 装饰圈 34 凸沿
10 手轮橡胶 41 键
11 前罩 51 油脂槽
12 第一螺丝 52 径向扩张部
13 第二螺丝 81 直槽
14 紧固螺钉 161 上罩体
15 显示屏 162 侧罩体
16 遮光罩 163 第二卡扣部
17 电子器件 171 机芯
18 密封件 172 电池
19 扳机固定座 191 扳机安装支耳
20 扳机 192 扳机固定座的转轴安装孔
201 扳机的转轴安装孔 211 扭簧的扭臂
212 扳机的扭臂定位孔 231 按键PCB板的安装通孔
232 按键PCB板的第一侧面 233 按键PCB板的第二侧面
234 按键PCB板的开关接触部 235 插座
241 垫块 242 按压突起
243 安装柱 244 凸缘
a 凸缘的渐变段    
具体实施方式
为使本申请的目的、技术方案、及优点更加清楚明白，以下参照附图并举实施例，对本申请进一步详细说明。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在附图中，使用相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面结合附图对本申请进行详细说明。
在本申请的描述中，术语“中心”、“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对申请保护范围的限制。
下面结合附图对本申请进行详细说明。本申请实施例所提供的手动镜头调焦结构可以包括在例如手持红外测像仪的热成像设备中，图1为本申请实施例的热成像设备的示意性分解图。图2为本申请实施例的热成像设备的的示意性局部剖视图。图3为图2的局部放大图。如图1至图3所示，本申请一实施例的热成像设备包括：壳体3(包括前壳31)、镜头座1、镜头4和手动镜头调焦结构，本申请一实施例的手动镜头调焦结构包括：调焦轮8和轴向定位结构。调焦轮8与镜头4以同步转动、且能够相对轴向运动的方式相互连接。例如，调焦轮8通过键槽配合与镜头4以同步转动方式相互连接。也就是说，调焦轮8能够带动镜头4转动，将镜头4的转动转化为轴向运动，由此实现调焦。
可以采用任何适当的结构来实现调焦轮与镜头之间的同步转动但是能够相对轴向运动的连接关系。例如能够采用平键、花键等结构。平键与花键都是轴向设置的。在一个示例中，在镜头的外周设置径向凸起(例如花键)，在调焦轮上相应地设置有径向凹入的槽(例如花键槽)。在另一个示例中，在镜头的外周和调焦轮上，都设置有周向对齐设置的槽，在槽内设置有键。有利的是，在调焦轮与镜头之间，尤其是在前述的键槽配合结构处，设置有润滑油或润滑脂。
轴向定位结构对调焦轮8进行轴向定位，在调焦轮8转动的过程中，阻止调焦轮8轴向运动。也就是说，调焦轮8仅仅转动，但是不进行轴向运动。换句话说，在调焦过程中，调焦轮8相对于镜头同步转动，但是不随着镜头轴向运动。
在本申请实施例的手动镜头调焦结构中，设置对调焦轮的轴向定位，并让调焦轮与镜头通过键槽的导向活动配合。这样在调焦轮转动时，镜头通过键槽的配合实现轴向移动，而调焦轮因为存在前后的限位不会有轴向的移动。 从而，增强产品的使用体验，同时保证了外观的整体形态不受影响。
镜头4可以是任何适当的镜头。可选的，热成像设备可以为手持红外测像仪，则镜头4可以为设置在手持红外测像仪上的红外镜头。
参见图1和图9，为了改善调焦时的手感，在调焦轮8上设置有手轮橡胶10。为了增加美感，在调焦轮8上可以设置装饰圈9。手轮橡胶10和装饰圈9都套接在调焦轮8的径向外周上。在手轮橡胶10的外周设置有多个轴向延伸的条纹，以提高摩擦力。实际上，在进行手动调焦时，操作者转动手轮橡胶10，进而使得调焦轮8带动镜头4转动。
参见图3和图4，调焦轮8的内壁上设置有轴向直槽81，轴向直槽81与在镜头4的外周上设置的键41相互配合，键41能够在轴向直槽81内轴向滑动。调焦轮8的轴向直槽81与镜头4的键41的配合，使得调焦轮8与镜头4在转动上是同步的，但是两者能够相对轴向运动。也可以在调焦轮上设置键，而在镜头上设置轴向直槽，这也在本申请实施例的保护范围之内。键41的具体形状可以根据需要设置。此外，轴向直槽81与键41的数量，也可以根据需要设置，而不限于本申请图示实施例中采用三个周向均布键槽配合的布置方式。
在图示实施例中，键41以一体结构形式设置在镜头4的外周。也可以在镜头4的外周设置槽，并将键41设置在槽内，并突出于槽。
可选的，如图8所示，镜头4的镜头后端面与镜头座1配合形成镜头4的后轴向限位(图8中的B处)；镜头4的键41与调焦轮8的轴向限位部配合形成镜头4的前轴向限位(图8中的A处)。后轴向限位和前轴向限位限制镜头4的最大轴向运动区间，也就是说限定了最大的调焦范围。也可以采用其他的结构来实现调焦范围的限制。现有技术中的调焦限位一般通过螺丝与槽实现，而在本申请实施例中，可以通过镜头后端面与镜头座配合及调焦轮与镜头通过键槽配合实现。
参见图5a和图5b，轴向定位结构包括：限位座5和转动圈6。限位座5可以由第二螺丝13固定安装至前壳31；限位座5还可以固定至热成像设备的其他零部件上。转动圈6转动地套接在限位座5的径向外侧。转动圈6相对 于限位座5的轴向位置被限定。调焦轮8与转动圈6连接为一体，由此限制了调焦轮8的轴向运动。
限位座5的径向外周可以设置有油脂槽51。油脂槽51中可以设置润滑脂，用于在转动圈6套接至限位座5的过程中阻尼过大时，为转动圈6的转动提供润滑；油脂槽51中还可以设置阻尼脂，用于在转动圈6套接至限位座5的过程中阻尼过小时，为转动圈6的转动提供阻尼。油脂槽51的位置、宽度、深度及数量等具体参数，可以根据需要设置。
限位座5包括外周壁、内周壁和连接外周壁与内周壁的环形板。转动圈6转动地套接在限位座5的外周壁的径向外侧。环形板上设置有安装通孔，第二螺丝13穿过安装通孔连接至成像装置的壳体，也可以连接至镜头座1。
轴向定位结构还可以包括压圈7。压圈7螺纹连接至限位座5的一端，限位座5的另一端设置有径向扩张部52。转动圈6在轴向上被夹在压圈7与限位座5的径向扩张部52之间。具体地，转动圈6套设在限位座5的外周上，能够相对于转动圈6转动。压圈7螺纹连接至限位座5端部的外螺纹上，形成对转动圈6的轴向限位。压圈7与限位座5的径向扩张部之间的距离略大于转动圈6的轴向尺寸。距离与轴向尺寸之差适当地设置，保证转动圈6顺畅转动且无轴向晃动。例如，距离与轴向尺寸之差在0.05毫米至0.5毫米之间。
参见图3，调焦轮8由径向延伸的紧固螺钉14固定连接至转动圈6。可选的，设置3个周向均匀分布的紧固螺钉14。
下面，简单说明上述手动镜头调焦结构的安装步骤。
首先，装配第一组件。将镜头座1与前壳31用第一螺丝12固定；镜头4通过螺纹配合进镜头座1，形成第一组件。密封垫2被夹在镜头座1与前壳31之间。以防止外部水汽进入。具体地，镜头座1带有内螺纹，镜头4带有外螺纹。镜头4的外螺纹与镜头座1的内螺纹配合。
其次，将限位座5、转动圈6、压圈7装成第二组件，保证转动圈6顺畅转动且无轴向晃动。
第三，将第二组件装配固定到第一组件上，参见图6。具体地，利用第二 螺丝13将限位座5固定连接至前壳31或镜头座1。
第四，将调焦轮8的直槽81与镜头4的键41配合，导向进去后，调焦轮8套设在转动圈6上。然后，使用径向延伸的紧固螺钉14将调焦轮8与转动圈6紧固在一起。从而，调焦轮8将带动转动圈6一体地转动。
第五，将装饰圈9、手轮橡胶10、前罩11等组装完成。
上述手动镜头调焦结构能够用于各种的需要调焦的成像设备或检测设备。一种具体的应用是手持红外测像仪，此种手持红外测像仪包括上述的手动镜头调焦结构。在一个实施例中，手持红外测像仪包括：前壳31；镜头座1；镜头4、调焦轮8和轴向定位结构等。前壳31是整个手持红外测像仪的外壳的一部分，且与前罩11配合，而限定一个容置空间。上述手动镜头调焦结构大体上容置在这个容置空间内。
镜头座1固定连接至前壳31，具体地，镜头座1由第一螺丝12固定至前壳31。在前壳31与镜头座1之间设置有密封垫2，以防止水气等进入内部空间。镜头4与镜头座1螺纹连接，具体地，镜头4旋拧在镜头座1内。但是，也可以在镜头上设置螺纹孔，而在镜头座上设置螺柱，并将螺柱旋拧在镜头上的螺纹孔内。
调焦轮8其通过键槽配合与镜头1以同步转动方式相互连接。具体地，如上述内容，能够采用各种适当的键槽结构来实现调焦轮与镜头1之间的连接。只要，能够实现下述功能即可：使得调焦轮8与镜头4在转动上是同步的，但是两者能够相对轴向运动。
轴向定位结构对调焦轮8进行轴向定位，可以采用前述的任何具体结构。
当前的热成像设备中，通常还包括显示屏和对显示屏遮光的遮光罩。通过设置遮光罩，在光照强烈的情况下可有效的遮挡光线，避免光线直射到显示屏上，从而避免光线影响到人眼观察显示屏的图像。在制造热成像设备时，为避免对遮光罩单独开模而提高热成像设备的制作成本，通常将遮光罩与壳体设置为一体式结构。但是，在阴天或室内等光照强度较弱的场合，不需要使用遮光罩时，则无法将遮光罩从壳体上拆卸，影响热成像设备的使用。
如图11、图12所示，本申请另一实施例的热成像设备，除了包括如图1所示的壳体3、镜头座1、镜头4和手动镜头调焦结构以外，还可以包括设置在壳体3上的显示屏15，以及设置在壳体3外部以对显示屏15遮光的遮光罩16。其中，壳体3的内部设有电子器件17，显示屏15与电子器件17电连接。如图13至图15所示，壳体3的外部设置有第一卡扣部33，遮光罩16上设置有第二卡扣部163。需要使用遮光罩16时，遮光罩16通过第一卡扣部33、第二卡扣部163固定在壳体3上。不需要使用遮光罩16时，第二卡扣部163从第一卡扣部33中退出，遮光罩16从壳体3上卸下。
设置第一卡扣部33、第二卡扣部163后能够实现壳体3和遮光罩16的可拆卸连接。这样，在阴天或室内等光照强度较弱的场合，不需要使用遮光罩16时，可以将遮光罩16从壳体3上拆卸，从而减少遮光罩16对测像仪的影响。
热成像设备的各部件可以有多种结构，以下以具体的实施例为例，详细介绍热成像设备各部件的结构。
壳体3可以包括前壳31和后壳32，其中显示屏15和遮光罩16设置在后壳32上。前壳31上可以设置凹槽，后壳32上可以设置凸筋，后壳32通过凹槽、凸筋与前壳31固定，以提高安装便捷性。后壳32上设置有向后(后方为远离前壳31的方向)凸出的凸沿34，凸沿34与显示屏15设置在后壳32的同一面上，并且凸沿34绕着后壳32的外周环向设置。凸沿34内、外表面的弯曲形状与后壳32侧面的弯曲形状相同。
在凸沿34上设置有第一卡扣部33。此处优先选用第一卡扣部33为卡槽，以方便加工。第一卡扣部33的数量与第二卡扣部163的数量相同，每个第一卡扣部33卡入不同的第二卡扣部163。
凸沿34可以与后壳32粘接在一起，以方便在卡槽中设有密封件18(如图16所示)，减少灰尘、水气等进入壳体3中的可能性。凸沿34的内表面形状可以与后壳32的接触部位的外表面形状相同，具有一定的弧度。密封件18可以为密封块等，通过粘胶与凸沿34和后壳32粘接。
电子器件17包括机芯171以及电池172。显示屏15与机芯171连接，机 芯171与电池172连接。机芯171安装在前壳31上，电池172安装在壳体3的手柄位置。
遮光罩16包括罩设在显示屏15上方的上罩体161和上端与上罩体161连接并罩设在显示屏15侧方的侧罩体162。在上罩体161的两端分别设置一个侧罩体162，并且上罩体161与侧罩体162在连接部位光滑过渡。
上罩体161和侧罩体162均为板状结构，上罩体161的外表面和侧罩体162的外表面可以具有一定弧度。将遮光罩16固定在壳体3上后，上罩体161的外表面、侧罩体162的外表面分别与相应部位的壳体3凸沿34内表面接触，以能够通过凸沿34支撑遮光罩16，提高遮光罩16的固定牢固性。
此时，遮光罩16的材质可以选用能够产生形变的材质，例如工程塑胶材料，以方便将第二卡扣部163卡入第一卡扣部33中。遮光罩16的颜色可以做成黑色，内侧再喷涂消光漆，可有效的避免光照到遮光罩16内侧，从而反射到显示屏15上影响人眼观察图像。
第二卡扣部163可以为卡耳，大致呈矩形的平板状结构。在上罩体161和侧罩体162上均设置有第二卡扣部163，以提高遮光罩16固定在壳体3上的牢固性。上罩体161上可以设置两个第二卡扣部163，两个第二卡扣部163分别靠近上罩体161的两端。每个侧罩体162上设置一个第二卡扣部163，侧罩体162的第二卡扣部163靠近侧罩体162的下端(其中，侧罩体162下端与上端相对)。这样，遮光罩16产生形变后，方便将第二卡扣部163卡入第一卡扣部33中，而且可以提高遮光罩16的固定牢固性。
第二卡扣部163垂直于其所在的遮光罩16的表面，即，位于上罩体161上的第二卡扣部163垂直于其所在上罩体161的表面，位于侧罩体162上的第二卡扣部163垂直于其所在的侧罩体162的表面，以方便将第二卡扣部163卡入第一卡扣部33。当然，此处的垂直并不是绝对的90度，而是可以稍微大于90度(例如93度)或稍微小于90度(例如85度)。各第二卡扣部163的朝向可以相同，例如朝向壳体3的后方，以方便安装遮光罩16。
安装遮光罩16时，抓住遮光罩16的两个侧罩体162，对两个侧罩体162施加朝向彼此的力，两个侧罩体162朝向彼此弯曲变形，上罩体161也产生 一定的弯曲变形。此时，将上罩体161的第二卡扣部163卡入相应的第一卡扣部33，然后取消对侧罩体162施加的力，遮光罩16取消形变，侧罩体162的第二卡扣部163也卡入相应的第一卡扣部33，从而完成遮光罩16的安装。
拆卸遮光罩16时，抓住遮光罩16的两个侧罩体162，对两个侧罩体162施加相向的力，两个侧罩体162朝向彼此弯曲变形。此时，侧罩体162的第二卡扣部163从第一卡扣部33脱出。然后将上罩体161的第二卡扣部163从第一卡扣部33脱出，即可取下遮光罩16。
本申请实施例中，遮光罩能够通过第一卡扣部和第二卡扣部实现与壳体的可拆卸式连接。当在阴天或室内等光照强度较弱的场合，不需要使用遮光罩时，可以将遮光罩从壳体上拆卸，从而减小遮光罩影响测像仪使用的可能性。
当前的热成像设备中，一般还设置有扳机按键组件，通过操控扳机按键组件，接通或断开控制电路，从而达到控制热成像设备运行的目的。但是，扳机按键组件普遍采用直线按压方式，触动扳机按键结构内部的轻触开关或者行程开关，松开扳机后的复位则大多通过软胶或者弹簧实现，这种直线运动方式的按键结构容易卡顿，而且内部的弹簧会使按键的反馈感明显减弱，从而造成整个扳机按键组件的按键体验不良，影响整个产品的人机体验。
因此，如图17和图18所示，本申请一实施例提供的扳机按键组件包括扳机固定座19、扳机20、按键结构和转动连接件22，按键结构设在扳机固定座19与扳机20之间，并受扳机20按压而能够接通或断开电路。扳机20的一端通过转动连接件22设在扳机固定座19上。
本申请实施例将扳机20的一端采用转动连接件22连接到扳机固定座19上，使扳机20通过转动连接件22与扳机固定座19活动配合，使扳机20受压后以转动的方式触动按键结构，这样能够有效提升扳机20的按压手感，从而达到提升扳机按键体验的效果。
转动连接件22可以包括转轴。为了安装转轴，扳机固定座19的安装扳机20的侧面设有扳机安装支耳191，两个隔开的扳机安装支耳191上开设有 转轴安装孔192，与此相对应地，扳机20的一端开设有转轴安装孔201。安装转轴时，将扳机固定座19的转轴安装孔192与扳机20的转轴安装孔201相对齐，将转轴的一端从一侧的转轴安装孔插入到另一侧的转轴安装孔中，此时，转轴的两端可转动地装设于扳机固定座19和扳机20相对齐的安装孔中，以使扳机20的另一端可绕转轴旋转。转轴可以选用耐磨和抗氧化能力优良的材质，耐磨，寿命长。
扳机按键组件还可以包括复位件，复位件设在扳机固定座19和扳机20之间，为扳机20在受到按压后回复并保持在初始位置提供弹性力，扳机20在初始位置与按键结构具有间隔，从而保证扳机20在被按压下去之后，及时松开，从按键结构的开关接触部脱离，避免误触发按键结构的开关接触部。扳机20在初始位置与按键结构的间隔的大小可根据实际情况确定。
参考图17、图19c和图19d，复位件包括扭簧21，扭簧21套设在转轴位于转轴安装孔之间的部分的外部，且扭簧21两端的扭臂211分别抵接到扳机固定座19和扳机20，具体地，扭簧21一端的扭臂211插入到扳机20的扭臂定位孔212内，扭簧21另一端的扭臂211插入到扳机固定座19的扭臂定位孔(图中未示出)内，为扳机20保持在初始位置提供弹性力。扭簧21提供的反向力使用户能够较为明显地感受到扳机20的复位动作，这有利于提升扳机按键体验的效果。
参考图17、图19a和图19b，按键结构为按键PCB(英文全称为Printed Circuit Board，中文名称为印制电路板)板23，按键PCB板23可以是直接从市面直接购置得到的产品。扳机按键组件还包括PCB板密封垫24，PCB板密封垫24通过密封胶(比如3M胶等)粘接在按键PCB板23的一侧。通过PCB板密封垫24，可以防止积聚在板机20内的水进入到按键PCB板23，保证按键PCB板23的电性能。
PCB板密封垫24可以由橡胶材料制成，且包括垫块241，垫块241的一侧面通过密封胶粘接到按键PCB板23的开关接触部所在的第一侧面232，垫块241的另一侧面设按压突起242，按压突起242与按键PCB板23的开关接触部234的位置相对齐或对应，因此在受扳机20按压而能够施力到按键PCB板23的开关接触部234。
按键PCB板23可以设置有安装通孔231，例如在按键PCB板23的四角分别开设一个安装通孔231。垫块241粘接按键PCB板23的第一侧面232的侧面设置有安装柱243，安装柱243的外侧壁设置有直径大于安装通孔231的直径的凸缘244，凸缘244从按键PCB板23的第一侧面232穿过安装通孔231，朝按键PCB板23方向压紧贴设到按键PCB板23的与第一侧面232相异的第二侧面233。这样有利于PCB板密封垫24对按键PCB板23的密封性能。按键PCB板23的的第二侧面233设有插座235，用于与热成像设备中的主板形成电连接。开关接触部234受到按压后，插座235接通或断开与热成像设备中的主板之间形成的电路。
如图19d所示，凸缘244可以包括渐变段a，渐变段a的外径尺寸相对于垫块241由外及内逐渐增大。这种结构有利于在将PCB板密封垫24组装在按键PCB板23的第一侧面232的时候，为PCB板密封垫24和按键PCB板23的贴合提供紧固力。
如图19e、图19f和图19g所示，本申请又一实施例的热成像设备，除了包括如图1所示的壳体3、镜头座1、镜头4和手动镜头调焦结构以外，图11所示的显示屏15、遮光罩16以外，还可以包括扳机按键组件。
扳机按键组件的扳机固定座19可以通过螺栓构件固定连接在壳体3任意位置，且扳机固定座19与壳体3之间设密封垫圈25，以对壳体3防水。密封垫圈25的形状可根据扳机固定座19的尺寸进行选用。材质可以选用市面上密封圈材质即可。
由于本申请实施例将扳机的一端采用转动连接件连接到扳机固定座上，使扳机通过转动连接件与扳机固定座活动配合，使扳机受压后以转动的方式触动按键结构，这样能够有效提升扳机的按压手感，从而达到提升扳机按键体验的效果。
以上实施例仅用以说明本申请实施例的技术方案，而非对其限制。本领域的普通技术人员应当理解：可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (19)

  1. 一种热成像设备，其特征在于，所述热成像设备包括：
    壳体，包括前壳；
    镜头座，固定连接至所述前壳，且在所述前壳与所述镜头座之间设置有密封垫；
    镜头，与所述镜头座螺纹连接；
    手动镜头调焦结构，包括调焦轮及轴向定位结构，其中，所述调焦轮，与所述镜头以同步转动、相对轴向运动的方式相互连接；所述轴向定位结构，对所述调焦轮进行轴向定位。
  2. 根据权利要求1所述的热成像设备，其特征在于，所述轴向定位结构包括：限位座和转动圈，所述限位座固定连接至所述壳体，所述转动圈转动地套接在所述限位座的径向外侧、且所述转动圈相对于所述限位座的轴向位置被限定，其中，所述调焦轮与所述转动圈连接为一体；所述限位座由第二螺丝固定至所述壳体。
  3. 根据权利要求2所述的热成像设备，其特征在于，所述轴向定位结构还包括压圈，所述压圈螺纹连接至所述限位座的一端，所述限位座的另一端设置有径向扩张部，所述转动圈在轴向上被夹在所述压圈与所述限位座的径向扩张部之间。
  4. 根据权利要求2所述的热成像设备，其特征在于，所述调焦轮由径向延伸的紧固螺钉固定连接至所述转动圈。
  5. 根据权利要求2所述的热成像设备，其特征在于，在所述限位座的径向外周设置有油脂槽。
  6. 根据权利要求2所述的热成像设备，其特征在于，所述限位座包括外周壁、内周壁和连接所述外周壁与内周壁的环形板，所述转动圈转动地套接在所述限位座的外周壁的径向外侧，所述环形板上设置有安装通孔，所述第二螺丝穿过所述安装通孔连接至所述壳体。
  7. 根据权利要求1所述的热成像设备，其特征在于，所述调焦轮通过键 槽配合与所述镜头以同步转动方式相互连接。
  8. 根据权利要求1所述的热成像设备，其特征在于，所述镜头的外周设置有键，所述调焦轮的内壁上设置有轴向直槽，所述键与所述轴向直槽相互配合，所述键能够在所述轴向直槽内轴向滑动。
  9. 根据权利要求1所述的热成像设备，其特征在于，所述镜头的镜头后端面与镜头座配合形成对所述镜头的后轴向限位；所述镜头的键与所述调焦轮的轴向限位部配合形成对所述镜头的前轴向限位。
  10. 根据权利要求1所述的热成像设备，其特征在于，所述壳体内部设置有电子器件，外部设置有第一卡扣部；
    所述热成像设备，还包括：
    显示屏，设置在所述壳体上、并与所述电子器件电连接；
    遮光罩，设置有第二卡扣部，通过所述第一卡扣部和所述第二卡扣部可拆卸式设置在所述壳体外部，对所述显示屏遮光。
  11. 根据权利要求10所述的热成像设备，其特征在于，所述遮光罩包括设置在所述显示屏上方的上罩体，以及上端与所述上罩体连接、且位于所述显示屏侧方的侧罩体，其中，所述上罩体和所述侧罩体均设置有所述第二卡扣部；
    所述上罩体上设置有两个所述第二卡扣部，两个所述第二卡扣部分别靠近所述上罩体的两端；
    所述侧罩体上设置有一个所述第二卡扣部，所述第二卡扣部靠近所述侧罩体的下端；
    所述第二卡扣部垂直于所述第二卡扣部所在的所述遮光罩的表面。
  12. 根据权利要求10或11所述的热成像设备，其特征在于，所述壳体上设置有所述显示屏的一面设置有凸沿，其中，所述凸沿绕着所述壳体的外周设置，所述第一卡扣部为设置在所述凸沿上的卡槽；所述卡槽中设置有与所述凸沿和所述壳体连接的密封件。
  13. 根据权利要求10或11中任一项所述的热成像设备，其特征在于，所述壳体还包括通过凸筋、凹槽与所述前壳扣合的后壳，其中，所述显示屏、所述遮光罩均设置在所述后壳上。
  14. 根据权利要求1所述的热成像设备，其特征在于，所述热成像设备，还包括扳机按键组件，所述扳机按键组件包括扳机固定座、扳机、按键结构和转动连接件；
    所述按键结构，设置在所述扳机固定座与所述扳机之间，并受所述扳机按压而能够接通或断开电路；
    所述扳机的一端通过所述转动连接件设置在所述扳机固定座上。
  15. 根据权利要求14所述的热成像设备，其特征在于，所述转动连接件包括转轴，所述转轴穿设在所述扳机固定座和所述扳机相对齐的安装孔中。
  16. 根据权利要求14或15所述的热成像设备，其特征在于，所述扳机按键组件，还包括：
    复位件，所述复位件设在所述扳机固定座和所述扳机之间，为所述扳机在受到按压后回复并保持在初始位置提供弹性力，所述扳机在所述初始位置与所述按键结构具有间隔。
  17. 根据权利要求16所述的热成像设备，其特征在于，所述复位件包括扭簧，所述扭簧套设在所述转轴外，且两端扭臂分别抵接至所述扳机固定座和所述扳机。
  18. 根据权利要求14或15或17所述的热成像设备，其特征在于，所述按键结构为按键PCB板，所述扳机按键组件还包括PCB板密封垫，所述PCB板密封垫通过密封胶粘接在所述按键PCB板的一侧；
    所述PCB板密封垫由橡胶材料制成、且包括垫块，所述垫块的一侧面通过密封胶粘接到所述按键PCB板的开关接触部所在的第一侧面，所述垫块的另一侧面设置有按压突起，受所述扳机按压而能够施力到所述按键PCB板的开关接触部；
    所述按键PCB板设有安装通孔，所述垫块粘接所述按键PCB板的第一侧 面的侧面设有安装柱，所述安装柱的外侧壁设有直径大于所述安装通孔的直径的凸缘，所述凸缘从所述按键PCB板的第一侧面穿过所述安装通孔，压紧贴设到所述按键PCB板的与所述第一侧面相异的第二侧面；
    所述凸缘包括渐变段，所述渐变段的外径尺寸相对于所述垫块由外及内逐渐增大。
  19. 根据权利要求14所述的热成像设备，其特征在于，所述扳机固定座通过螺栓固定连接在所述壳体上，且所述扳机固定座与所述壳体之间设置有密封垫圈。
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