CN107959777A - A kind of catch switching mechanism and thermal imaging apparatus - Google Patents

A kind of catch switching mechanism and thermal imaging apparatus Download PDF

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Publication number
CN107959777A
CN107959777A CN201711217924.7A CN201711217924A CN107959777A CN 107959777 A CN107959777 A CN 107959777A CN 201711217924 A CN201711217924 A CN 201711217924A CN 107959777 A CN107959777 A CN 107959777A
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CN
China
Prior art keywords
catch
driving
gear
switching mechanism
driving lever
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Granted
Application number
CN201711217924.7A
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Chinese (zh)
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CN107959777B (en
Inventor
占胜
杨康
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Zhejiang Huagan Technology Co ltd
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Zhejiang Dahua Technology Co Ltd
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Priority to CN201711217924.7A priority Critical patent/CN107959777B/en
Publication of CN107959777A publication Critical patent/CN107959777A/en
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Classifications

    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

The present invention relates to thermal imaging field, discloses a kind of catch switching mechanism and thermal imaging apparatus, and catch switching mechanism includes rack, catch, driving driving lever, dynamic clamping head and quiet clamping head and driving motor, wherein：Catch includes catch body and the connection handle being fixedly connected with catch body, and connection handle is movably installed in rack, has initial position and calibration position on the rotation path of catch body, driving has the first operating position and the second operating position on the rotation path of driving lever；When driving driving lever to be driven by driving motor and being rotated from the first operating position to the second operating position, driving driving lever contacts with the connection handle of catch and promotes connection handle to rotate, so that catch body turns to calibration position by initial position；When catch body is positioned at calibration position, connection handle is directed toward the second rotation axis to the pressure for driving driving lever.It can improve due to the problem of shock problem causes the use reliability of catch switching mechanism to reduce.

Description

A kind of catch switching mechanism and thermal imaging apparatus
Technical field
The present invention relates to thermal imaging field, more particularly to a kind of catch switching mechanism and thermal imaging apparatus.
Background technology
Thermal imaging apparatus is the infrared energy point for receiving measured target using infrared detector and optical imagery object lens Cloth figure, generates the imaging device of Infrared Thermogram.The detector of thermal imaging apparatus is in its course of work, with neighbouring electricity The change of heat or vessel temp that subcomponent produces, or the change of the target own radiation heat in the visual field, the increasing of detector Benefit and standard value will occur intrinsic drift and deviate stable region, cause image uneven.It is uneven for tuning detector Property, usually side is provided with catch switching mechanism before the detectors at present, and catch switching mechanism includes one can be relative to detection The catch of device movement, when catch moves to operating position positioned at the front of detector, can obstruct all incidences from target Energy, and temperature calibration can be carried out to detector relative to a fixed heat source, the time interval of temperature calibration is several Second to a few minutes.
A kind of current common catch switching mechanism is using direct current generator and reducing gear driving catch movement, due to direct current The stroke of motor cannot be precisely controlled, when direct current generator driving catch moves to operating position, to make catch rest on work Position, needs in catch switching mechanism to set a position limiting structure, when catch moves to operating position, position limiting structure and catch Contact is so as to prevent the further movement of catch.But impact can be produced during catch is contacted with position limiting structure every time And be delivered on reducing gear, frequently impact can cause the service life of reducing gear to shorten, and reduce catch switching mechanism Use reliability, thereby reduce the use reliability of thermal imaging apparatus.
The content of the invention
The present invention provides a kind of catch switching mechanism and thermal imaging apparatus, to solve catch switching of the prior art Mechanism is since the shock problem of its reducing gear causes the use reliability of catch switching mechanism to reduce and then causes thermal imaging to set The problem of standby use reliability reduces.
To achieve the above object, the present invention provides following technical solution：
A kind of catch switching mechanism, for thermal imaging apparatus, including rack, catch, driving driving lever, dynamic clamping head and quiet clamping head and drive Dynamic motor, wherein：
The catch includes catch body and the connection handle being fixedly connected with the catch body, the connection handle activity peace Loaded on the rack, and can be rotated around the first rotation axis；The driving driving lever is movably installed in the rack, and can be around the second rotation Shaft rotates, and first rotation axis is parallel with second rotation axis；Have on the rotation path of the catch body initial Position and calibration position, it is described driving driving lever rotation path on there is the first operating position and the second operating position；
The dynamic clamping head and quiet clamping head is connected with the connection handle of the catch, and is provided for the connection handle and made the catch body The elastic force rotated from the calibration position to the initial position；The driving motor is sequentially connected with the driving driving lever；
Driven by the driving motor in the driving driving lever and rotated from the first operating position to the second operating position When, the driving driving lever contacts with the connection handle of the catch and promotes connection handle rotation so that the catch body by Initial position turns to calibration position；In the driving driving lever by the driving motor driving and from the second operating position to the When one operating position rotates, the connection handle rotates under the action of the elastic force, so that the catch body is by demarcating position Put and turn to initial position；When the catch body is positioned at the calibration position, the connection handle is to the driving driving lever Pressure is directed toward second rotation axis.
In catch switching mechanism provided by the invention, catch and driving driving lever are movably installed in rack, and catch can be around First rotation axis rotates, and driving driving lever can be rotated around the second rotation axis, and driving motor can drive driving driving lever to rotate, and dial driving Bar promotes the connection handle of catch to rotate, and catch body is rotated from initial position to calibration position, in catch body positioned at mark When positioning is put, since connection handle is directed toward the second rotation axis to the pressure for driving driving lever, then connection handle forms self-locking, and catch body exists Its position can be kept fixed when not stressing, and therefore, be not required to set for making catch in catch switching mechanism provided by the invention Body is maintained at the position-limit mechanism of calibration position, can reduce the impact that catch produces in rotation process, improves due to impact Problem causes the use reliability of catch switching mechanism to reduce and then causes what the use reliability of thermal imaging apparatus reduced to ask Topic.
Alternatively, the connection handle is equipped with arc-shaped depression portion, and the calibration position is moved in the catch body When, the center of circle in the arc-shaped depression portion rotates overlapping of axles, and the driving driving lever and the arc depression portion with described second It is tangent.
Further, the central angle in the arc-shaped depression portion is 30 ° -120 °.
Further, one end that the arc-shaped depression area is connected on the connection handle with the rack.
Alternatively, the driving driving lever includes driving lever body and the first gear being fixedly connected with the driving lever body, institute State and second gear is fixedly connected with the drive shaft of driving motor, the first gear and second gear engagement.
Further, the axis of the first gear is vertical with the axis of the second gear.
Further, the first gear is ring gear, and the second gear is roller gear；Or, the first gear For bevel gear, the second gear is bevel gear.
Further, when the first gear is ring gear, the ring gear is partial gear.
Alternatively, the dynamic clamping head and quiet clamping head is torque spring.
Present invention also offers a kind of thermal imaging apparatus, including the catch that infrared detector and above-mentioned technical proposal provide to cut Converting mechanism, catch in the catch switching mechanism and the test side of the infrared detector to enter light direction vertical and described Catch blocks the test side of the infrared detector when moving to the calibration position by the initial position.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of catch switching mechanism provided in an embodiment of the present invention；
Fig. 2 is the configuration schematic diagram of the catch switching mechanism shown in Fig. 1；
Fig. 3 is the operation principle schematic diagram of the catch switching mechanism shown in Fig. 1；
Fig. 4 is the operation principle schematic diagram of the catch switching mechanism shown in Fig. 1.
Reference numeral：
01st, 02, screw；10, rack；20, catch；21, catch body；22, connection handle；
221, arc-shaped depression portion；30, drive driving lever；31, driving lever body；32, first gear；
40, dynamic clamping head and quiet clamping head；50, drive motor；51, second gear；
100, the first rotation axis；200, the second rotation axis.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without making creative work Example is applied, belongs to the scope of protection of the invention.
It is shown in Figure 1, an embodiment of the present invention provides a kind of catch switching mechanism, for thermal imaging apparatus, the catch Switching mechanism includes rack 10, catch 20, driving driving lever 30, dynamic clamping head and quiet clamping head 40 and driving motor 50.
With reference to shown in Fig. 2, catch 20 includes catch body 21 and the connection handle 22 being fixedly connected with catch body 21, connection Handle 22 is movably installed in rack 10, and can be rotated around the first rotation axis 100；Specifically, as shown in Fig. 2, the connection handle of catch 20 22 are installed in rack 10 by screw 01.
Driving driving lever 30 is movably installed in rack 10, and can be rotated around the second rotation axis 200, the first rotation axis 100 and the Two rotation axis 200 are parallel；Specifically, as shown in Fig. 2, driving driving lever 30 includes driving lever body 31, driving lever body 31 is cylinder Structure, driving driving lever 30 are installed in rack 10 by screw 02.In specific implementation, rack 10 can be an absolute construction, It can be an integral structure with thermal imaging apparatus.
There is initial position and calibration position with reference to shown in Fig. 3 and Fig. 4, on the rotation path of catch body 21, shown in Fig. 3 Catch 20 be in initial position, the catch 20 shown in Fig. 4 be in calibration position；Driving has the on the rotation path of driving lever 30 One operating position and the second operating position, the driving driving lever 30 shown in Fig. 3 are in the first operating position, and the driving shown in Fig. 4 is dialled Bar 30 is in the second operating position.
With continued reference to shown in Fig. 2, dynamic clamping head and quiet clamping head 40 is connected with the connection handle 22 of catch 20, and is made for the offer of connection handle 22 The elastic force that catch body 21 is rotated from calibration position to initial position；Specifically, dynamic clamping head and quiet clamping head 40 is torque spring, torsion One end of spring is fixedly connected with rack 10, and the other end is fixedly connected with connection handle 22.
Driving motor 50 is sequentially connected with driving driving lever 30, and driving driving lever 30 can be under the driving of driving motor 50 around second Rotation axis 200 rotates.
With reference to shown in Fig. 3 and Fig. 4, driven in driving driving lever 30 by driving motor 50 and along the A directions of arrow shown in Fig. 3 Rotate, when turning to the second operating position shown in Fig. 4 with the first operating position as shown in Figure 3, at this time drive driving lever 30 with The connection handle 22 of catch 20 contacts and promotes connection handle 22 to rotate, so that catch body 21 turns along the B directions of arrow shown in Fig. 3 It is dynamic, and initial position as shown in Figure 3 turns to the calibration position shown in Fig. 4, in the process, since connection handle 22 is subject to bullet Property return unit 40 resilient force, connection handle 22 and driving driving lever 30 between keep contacting；
Driven by driving motor 50 in driving driving lever 30 and rotated along the A directions of arrow shown in Fig. 3, with as shown in Figure 4 Second operating position to shown in Fig. 3 the first operating position rotate when, connection handle 22 is under the action of elastic force along shown in Fig. 3 The B directions of arrow rotate, so that the calibration position of catch body 21 as shown in Figure 4 turns to the initial position shown in Fig. 3.
By driving the driving of driving lever 30 and dynamic clamping head and quiet clamping head 40, make catch body 21 initial position and calibration position it Between switch over, you can realize be provided with the catch switching mechanism thermal imaging apparatus thermal imaging function and temperature calibration work( Energy.
Shock problem caused by when switching to reduce catch body 21 between initial position and calibration position, the present invention It is not provided with being used for the limit for making catch body 21 be maintained at calibration position in the prior art in the catch switching mechanism that embodiment provides Bit architecture, but catch body 21 is maintained at its using self-lock mechanism and demarcate position, concrete principle is in catch body 21 When position is demarcated, connection handle 22 is directed toward the second rotation axis 200 to the pressure for driving driving lever 30, then connection handle 22 can be made to be formed certainly Lock, and calibration position is not easily disconnected from stress.In a kind of embodiment, the self-locking of connection handle 22 can be used shown in Fig. 4 Structure realizes that specifically, connection handle 22 is equipped with arc-shaped depression portion 221, when catch body 21 moves to calibration position, such as Shown in Fig. 4, the center of circle in arc-shaped depression portion 221 is overlapped with the second rotation axis 200, and drives driving lever 30 and arc depression portion 221 It is tangent, then when driving driving lever 30 moves to optional position in arc-shaped depression portion 221, pressure of the connection handle 22 to driving driving lever 30 Power F is directed to the second rotation axis 200 so that driving driving lever 30 will not be rotated due to the pressure of connection handle 22, and then be made Connection handle 22 is maintained on calibration position, and the position of catch body 21 can be made to keep fixing.Therefore, catch provided by the invention It is not required to set the position-limit mechanism for being used to make catch body 21 be maintained at calibration position in switching mechanism, catch 20 can be reduced and rotated During the impact that produces, improve since shock problem causes the use reliability of catch switching mechanism to reduce and then causes The problem of use reliability of thermal imaging apparatus reduces.In addition, in the prior art, due to re-starting temperature calibration in detector When, catch 20 needs to stay for some time in operating position, to make catch 20 be maintained at operating position, it is necessary in temperature calibration mistake Persistently it is powered to direct current generator in journey, direct current generator is in locked rotor condition in the process, also results in the use of direct current generator The lost of life.And in catch switching mechanism provided in an embodiment of the present invention, due to leading to when catch body 21 moves to calibration position Cross self-locking holding position to fix, therefore external force need not be applied to catch body 21 in calibration process, driving motor 50 is at this time It can be stopped, improve due to the problem of motor service life caused by motor rotation blockage declines.Make after calibration process Driving motor 50 drives driving driving lever 30 to rotate out in arc-shaped depression portion 221, you can catch body 21 is released self-locking.
In specific implementation, the central angle in arc-shaped depression portion 221 can be according to the diameter of the driving lever body 31 of driving driving lever 30 It is configured, in a kind of embodiment, the central angle in arc-shaped depression portion 221 is 30 ° -120 °, specifically such as 30 °, 45 °, 60 °, 90 °, 120 °, when the central angle in arc-shaped depression portion 221 is bigger, drive the formation between driving lever 30 and catch 20 Impact it is smaller.Position of the arc-shaped depression portion 221 on connection handle 22 need to be carried out according to the calibration position of catch body 21 Set, specifically, in the present embodiment as shown in Figure 3 and Figure 4, what arc-shaped depression area was connected on connection handle 22 with rack 10 One end.
To improve the output torque of driving motor 50 and upper electric control surplus, drive and adopted between motor 50 and driving driving lever 30 It is sequentially connected with reducing gear, shown in Figure 2 in a kind of embodiment, driving driving lever 30 further includes and driving lever The first gear 32 that body 31 is fixedly connected, drives and is fixedly connected with second gear 51, first gear in the drive shaft of motor 50 32 and second gear 51 engage, to form a reducing gear, so as to improve the driving output torque of motor 50 and upper automatically controlled Surplus processed.
It is shown in Figure 2 in a kind of embodiment to reduce the volume of catch switching mechanism, first gear 32 Axis is vertical with the axis of second gear 51, can reduce the space hold of driving motor 50, and then reduce catch switching mechanism Volume.
It is shown in Figure 2 when the axis of first gear 32 is vertical with the axis of second gear 51 in specific implementation, the One gear 32 is ring gear, and second gear 51 is roller gear, then the axis of first gear 32 and second gear 51 is orthogonal When can ensure the engagements of two gears, and since driving driving lever 30 need not do the circular motion of whole circle, then when first gear 32 For ring gear when, ring gear is partial gear, can further reduce the space hold of first gear 32.In other embodiment In, first gear 32 and second gear 51 can also be bevel gear, to realize that the axis of first gear 32 and second gear 51 is mutual The engagement of two gears when perpendicular.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of thermal imaging apparatus, including infrared detector and The catch switching mechanism that above-described embodiment provides, the test side of catch and infrared detector in catch switching mechanism enter light side To vertical, and when catch moves to calibration position by initial position, blocks the test side of infrared detector.When infrared detector When test side is blocked by catch, all projectile energies for carrying out Autonomous test target can be obstructed, make infrared detector solid relative to one Fixed heat source carries out temperature calibration, and then corrects the inhomogeneities of infrared detector.In a kind of embodiment, catch switching Mechanism is mountable to the side where the test side of infrared detector.
Obviously, those skilled in the art can carry out the embodiment of the present invention various modification and variations without departing from this hair Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies Within the scope of, then the present invention is also intended to comprising including these modification and variations.

Claims (10)

1. a kind of catch switching mechanism, for thermal imaging apparatus, it is characterised in that including rack, catch, driving driving lever, elasticity Return unit and driving motor, wherein：
The catch includes catch body and the connection handle being fixedly connected with the catch body, and the connection handle is movably installed in The rack, and can be rotated around the first rotation axis；The driving driving lever is movably installed in the rack, and can be around the second rotation axis Rotate, first rotation axis is parallel with second rotation axis；There is initial position on the rotation path of the catch body With calibration position, it is described driving driving lever rotation path on there is the first operating position and the second operating position；
The dynamic clamping head and quiet clamping head is connected with the connection handle of the catch, and makes the catch body by institute for connection handle offer State the elastic force that calibration position is rotated to the initial position；The driving motor is sequentially connected with the driving driving lever；
When the driving driving lever is driven by the driving motor and is rotated from the first operating position to the second operating position, institute State driving driving lever to contact with the connection handle of the catch and promote the connection handle to rotate, so that the catch body is by initial bit Put and turn to calibration position；Worked in the driving driving lever by the driving motor driving and from the second operating position to first When position rotates, the connection handle rotates under the action of the elastic force, so that the catch body is rotated by demarcating position To initial position；When the catch body is positioned at the calibration position, the connection handle refers to the pressure of the driving driving lever To second rotation axis.
2. catch switching mechanism according to claim 1, it is characterised in that the connection handle is equipped with arc-shaped depression Portion, when the catch body moves to the calibration position, the center of circle in the arc-shaped depression portion and second rotation axis Overlap, and the driving driving lever and the arc depression portion are tangent.
3. catch switching mechanism according to claim 2, it is characterised in that the central angle in the arc-shaped depression portion is 30°-120°。
4. catch switching mechanism according to claim 2, it is characterised in that the arc-shaped depression area is close to the connection The one end being connected on handle with the rack.
5. catch switching mechanism according to claim 1, it is characterised in that it is described driving driving lever include driving lever body and with The first gear that the driving lever body is fixedly connected, it is described driving motor drive shaft on be fixedly connected with second gear, it is described First gear and second gear engagement.
6. catch switching mechanism according to claim 5, it is characterised in that the axis of the first gear and described second The axis of gear is vertical.
7. catch switching mechanism according to claim 6, it is characterised in that the first gear is ring gear, described Two gears are roller gear；Or, the first gear is bevel gear, the second gear is bevel gear.
8. catch switching mechanism according to claim 7, it is characterised in that when the first gear is ring gear, institute It is partial gear to state ring gear.
9. catch switching mechanism according to claim 1, it is characterised in that the dynamic clamping head and quiet clamping head is torque spring.
10. a kind of thermal imaging apparatus, it is characterised in that including infrared detector and as claim 1-9 any one of them is kept off Piece switching mechanism, catch in the catch switching mechanism and the test side of the infrared detector to enter light direction vertical, and The catch blocks the test side of the infrared detector when moving to the calibration position by the initial position.
CN201711217924.7A 2017-11-28 2017-11-28 A kind of baffle switching mechanism and thermal imaging apparatus Active CN107959777B (en)

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CN201711217924.7A CN107959777B (en) 2017-11-28 2017-11-28 A kind of baffle switching mechanism and thermal imaging apparatus

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CN201711217924.7A CN107959777B (en) 2017-11-28 2017-11-28 A kind of baffle switching mechanism and thermal imaging apparatus

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CN107959777B CN107959777B (en) 2019-09-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112782908A (en) * 2019-11-07 2021-05-11 杭州海康微影传感科技有限公司 Shutter device and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203632755U (en) * 2013-11-22 2014-06-04 深圳市景阳科技股份有限公司 Torsional spring switching mechanism and infrared thermal imaging camera with same
CN103986868A (en) * 2014-05-15 2014-08-13 中国科学院长春光学精密机械与物理研究所 Camera multi-view-field fast switching device
CN106569372A (en) * 2016-11-14 2017-04-19 佛山市协亮光电制品有限公司 Shutter switcher applied to infrared thermal imager technologies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203632755U (en) * 2013-11-22 2014-06-04 深圳市景阳科技股份有限公司 Torsional spring switching mechanism and infrared thermal imaging camera with same
CN103986868A (en) * 2014-05-15 2014-08-13 中国科学院长春光学精密机械与物理研究所 Camera multi-view-field fast switching device
CN106569372A (en) * 2016-11-14 2017-04-19 佛山市协亮光电制品有限公司 Shutter switcher applied to infrared thermal imager technologies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112782908A (en) * 2019-11-07 2021-05-11 杭州海康微影传感科技有限公司 Shutter device and image forming apparatus
CN112782908B (en) * 2019-11-07 2022-04-26 杭州海康微影传感科技有限公司 Shutter device and image forming apparatus

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