CN109059855B - Flash on-off mechanism of gradient indicator - Google Patents
Flash on-off mechanism of gradient indicator Download PDFInfo
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- CN109059855B CN109059855B CN201811016914.1A CN201811016914A CN109059855B CN 109059855 B CN109059855 B CN 109059855B CN 201811016914 A CN201811016914 A CN 201811016914A CN 109059855 B CN109059855 B CN 109059855B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 230000004888 barrier function Effects 0.000 claims abstract description 38
- 230000003287 optical effect Effects 0.000 claims description 37
- 238000003384 imaging method Methods 0.000 claims description 23
- 241000098700 Sarcocheilichthys parvus Species 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 18
- 230000000670 limiting effect Effects 0.000 claims description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/005—Measuring inclination, e.g. by clinometers, by levels specially adapted for use in aircraft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
- G01C2009/066—Electric or photoelectric indication or reading means optical
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electroluminescent Light Sources (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides a slope indicator flashing on-off mechanism, wherein a red shading plate intermittently shields a red area of a three-color filter to realize a normally open function of red flashing; the yellow flashing light shielding plate intermittently shields or completely opens the yellow region of the three-color filter through the flashing on-off unit, so that the yellow flashing on-off function is realized; the side flashing light shielding plate is used for intermittently shielding or completely opening the side flashing area of the three-color filter through the flashing on-off unit, so that the side flashing on-off function is realized. Therefore, the invention can realize the flashing on-off function of the gradient indicator, and only uses one motor based on the turntable transmission structure, so that the light barrier can shield and not shield the circulation work in the yellow flashing area and/or the side flashing area, namely intermittently shield, the flashing phenomenon of bright and dark circulation is realized, the three-color visual approaching gradient indicator is driven to realize the flashing function, the mechanical and circuit structures are simplified, the reliability of the system in work is increased, and the working noise is reduced.
Description
Technical Field
The invention relates to the technical field of aviation equipment, in particular to a gradient indicator flashing on-off mechanism based on a turntable transmission structure.
Background
A three-color visual approach gradient indicator is a light indicating device used for guiding a pilot to correctly adjust the flight gradient when approaching a track. As shown in fig. 1, the three-color visual approach gradient indicator used in an airport can provide three gradient signals to a pilot, respectively: yellow-higher than the approach channel, green-in the approach channel, red-lower than the approach channel. The opening angle of the beam in the vertical direction is 14 °, wherein the yellow light 8 °, green light 2 °, red light 4 °, and the horizontal opening angle is 32 °. The flashing mechanism requires three types of flashing, namely yellow flashing, red flashing and side flashing, and the frequencies of the three types of flashing are different. The yellow flash frequency was 0.7Hz, the red flash frequency was 1.4Hz, the left edge flash frequency was 2.1Hz, and the side flash was blocked by 10% of the right edge of the yellow and green light emitting areas along the light emitting direction. According to the actual use requirement of a customer, the red flash is required to be in a normally open state, and the yellow flash and the side flash are optional functions, so that the yellow flash and the side flash are required to have a manual on-off control function, and the light barrier is required to be in a fully open state without shielding light when the yellow flash and the side flash are cut off.
At present, the existing visual approach flash mechanism controls three baffles to shade corresponding areas of a color filter at different frequencies by three motors at three different rotating speeds respectively so as to achieve the purpose of flashing, detects the shielding state of a light barrier through a photoelectric sensing device, and cuts off the power supply of the corresponding motors when the light barrier is in a full-open state so as to stop corresponding flashing. When the gradient indicator works, as three motors work simultaneously, the design difficulty of circuit driving is increased, the motors emit larger noise, a large amount of energy consumption is generated, the precision requirements on the control of the photoelectric sensing device and the motors are higher, and meanwhile, the mechanical size of equipment is increased.
In addition, the visual approach flash mechanism in the prior art cannot respectively control the on-off states of yellow flash, red flash and side flash in the three-color visual approach gradient indicator, namely, the same states of the yellow flash, the red flash and the side flash can only be realized at the same time.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to provide a flashing on-off mechanism of a gradient indicator, which aims to solve at least one technical problem.
(II) technical scheme
The invention provides a slope indicator flashing on-off mechanism, comprising:
A light source 200;
A lens group positioned in front of the optical path of the light source 200 for converging the light emitted from the light source 200, the lens group including a condensing lens group 300 and an imaging objective lens 400;
a flash mechanism comprising:
A filter mount 600 disposed between the condensing lens group 300 and the imaging objective lens 400, and having a three-color filter 610 disposed therein, the three-color filter including a red region, a yellow region, and a green region;
a turntable mounting member 500 having a front end connected to the imaging objective lens 400 and a rear end connected to the filter mounting member 600;
A turntable 540 installed in the turntable mounting member 500, wherein the center axis coincides with the optical axis of the system, and three closed grooves are provided on the front surface thereof;
The three light baffles are respectively a yellow light baffle 900, a red light baffle 640 and a side light baffle 800, the three light baffles are mutually independent and staggered, three connecting rods are arranged on the back surfaces of the three light baffles, the lower ends of the three connecting rods are inserted into corresponding closed grooves and can move along tracks defined by the closed grooves, and the yellow light baffle 900 and the side light baffle 800 comprise a flash on-off unit;
Wherein, the turntable 540 is driven by a servo motor 700 to rotate, and the red mask 640 intermittently shields the red area of the three-color filter 610, so as to realize the normally open function of red flashing; the yellow flash light shielding plate 900 intermittently shields or completely opens the yellow region of the three-color filter 610 through the flash on-off unit, so as to realize the on-off function of yellow flash; the side flash light shielding plate 800 intermittently shields or completely opens the side flash region of the three-color filter 610 by a flash on-off unit, thereby realizing the on-off function of the side flash.
In some embodiments of the present invention, the filter mount 600 is provided with a shutter rail 630, and the shutter rail 630 limits movement of the three shutters in a tangential direction of the optical axis of the optical system, so that the three shutters can only move in a radial direction of the optical axis of the optical system.
In some embodiments of the present invention, the yellow flash light shielding plate 900 and the side flash light shielding plate 800 have the same structural style, the closed groove comprises a yellow flash groove 543, the connecting rod comprises a yellow flash connecting rod 920, and an external thread 921 is formed at the upper end of the yellow flash connecting rod 920;
The yellow-flash light barrier 910 is a plate-shaped member, and the yellow-flash light barrier 910 is positioned at one end close to the three-color filter; the yellow flash connection lever 920 is fixed to the rear surface of the yellow flash light panel 910; the lower end of the yellow flash connection rod 920 is inserted into the yellow flash groove 543 corresponding to the front surface of the turntable 540; the yellow flash connection rod 920 moves along with the turntable 540 in the radial direction of the turntable 540 to drive the yellow flash barrier 910 to block the three-color filter 610.
In some embodiments of the present invention, the yellow flash light shielding plate 800 further comprises: a yellow flash adjustment block 940 and a spring 930;
the yellow flash adjusting block 940 is fixed at one end of the yellow flash light barrier 910 near the turntable 540;
A spring 930 is also arranged between the yellow flash connecting rod 920 and the yellow flash adjusting block 940, and the spring 930 carries out bidirectional limiting through a spring limiting table 922 and an adjusting block spring limiting table 942922 on the connecting rod, so that the yellow flash connecting rod 920 is subjected to downward elastic force;
the groove connector 923 at the lower end of the yellow flash connection rod 920 may be inserted into the yellow flash groove 543 of the turntable 540, and as the turntable 540 rotates around the optical axis, the yellow flash groove 543 may provide a force along the radial direction of the turntable 540 for the yellow flash connection rod 920, and the shutter guide rail 630 limits the movement of the yellow flash light barrier 910 along the tangential direction of the optical axis, so that the movement of the yellow flash light barrier 910 is limited in the tangential direction of the turntable 540.
In some embodiments of the present invention, the shielding edge of the yellow flash barrier 910 is knife-edge shaped;
The yellow flash light shielding plate 800 further includes: a yellow flash adjusting block 940, fixed to an end of the yellow flash light barrier 910 near the turntable 540, the yellow flash connecting rod 920 is located in the yellow flash adjusting block 940, and the yellow flash adjusting block 940 is used for adjusting the relative positions of the yellow flash connecting rod 920 and the yellow flash light barrier 910.
In some embodiments of the present invention, the yellow flash adjustment block 940 fine-adjusts the relative positions of the yellow flash tie bar 920 and the yellow flash barrier 910 to control the distance between the yellow flash barrier 910 and the corresponding shielding edge of the tri-color filter 610.
In some embodiments of the present invention, the flash on-off unit includes: steering engine 950, steering engine connector 960, cam 970 and yellow flash link 980,
The steering engine 950 is fixed on the filter mounting piece, the steering engine connecting piece 960 is used for connecting the steering engine 950 and the cam 970, the cam 970 is driven by the steering engine 950 to rotate around the central shaft of the steering engine connecting piece 960, the filter mounting piece is provided with a slot to avoid the cam 970 interfering with the same,
The yellow flashing connecting arm 980, the connecting arm mounting hole 982 of the yellow flashing connecting arm 980 is fixed with the yellow flashing connecting rod 920 through the adjusting block hole 941 of the yellow flashing adjusting block 940 and locked by the jackscrew 990, and the maximum stretching amount of the spring 930 is limited by the yellow flashing connecting arm 980, so that the yellow flashing connecting rod 920 is ensured not to touch the bottom of the yellow flashing groove 543.
In some embodiments of the present invention, when the yellow flash light shielding plate 800 intermittently shields the Huang Shanshan area of the three-color filter 610, the distance from the upper end of the cam 970 to the central axis of the steering engine 950 is short, the cam 970 is separated from the yellow flash connecting arm 980, the yellow flash connecting arm 980 can move freely, the yellow flash connecting rod 920 is pressed into the yellow flash groove 543 of the turntable 540 by the elastic force of the spring 930, and the turntable 540 drives the yellow flash light shielding plate 900 to move through the yellow flash connecting rod 920 when rotating;
when the yellow flash light shielding plate 800 is fully opened to the yellow flash area of the three-color filter 610, the steering engine 950 drives the cam 970 to rotate anticlockwise by 180 degrees, the distance from the upper end of the cam 970 to the central axis of the steering engine is longer, the cam 970 pushes up the steering engine 950 through the connecting arm groove 981 on the yellow flash connecting arm 980, the spring 930 is in a compressed state, the yellow flash connecting rod 920 is separated from the yellow flash groove 543, the yellow flash connecting rod 920 does not move along with the rotation of the turntable 540, and the left end of the cam 970 limits the yellow flash connecting arm 980 to move to the right of the light shielding, so that the yellow flash light shielding plate 910 is fully opened;
When the yellow flash area of the yellow flash light shielding plate 800 is converted from full opening to intermittent shielding, the steering engine 950 rotates 180 ° clockwise, and the right end of the cam 970 drives the yellow flash connecting arm 980 to push the yellow flash connecting rod 920 to the track range of the yellow flash groove 543 of the turntable 540; simultaneously, the upper end of cam 970 breaks away from with yellow flash link 980, because spring 930 has decurrent elasticity to yellow flash connecting rod 920, make recess connector 923 on the yellow flash connecting rod 920 contact with carousel 540 again, have circular chamfer on the recess connector 923, when the yellow flash recess 543 on carousel 540 rotates to the place unanimity with yellow flash connecting rod 920, recess connector 923 gets into in the recess again, make yellow flash connecting rod 920 follow carousel 540 and carry out rotatory and synchronous motion again, drive yellow flash light screen 900 and carry out reciprocal shelter from the motion in yellow region, realize the flash of light function.
In some embodiments of the present invention, a step structure is disposed on the back of the turntable 540, the turntable mounting member 500 is located at the periphery of the step structure, and a bearing 520 is disposed therebetween to enable the turntable 540 to rotate in the axial direction relative to the turntable mounting member 500;
The servo motor 700 is fixedly connected with the turntable mounting member 500 through a motor fixing plate 710, a turntable gear 544 formed by a circle of involute cylindrical teeth is arranged at the edge of the turntable 540, the turntable gear 544 is meshed with a motor gear 720 at the output end of the servo motor 700, and the servo motor 700 transmits rotary power to the turntable 540 through the motor gear 720.
In some embodiments of the invention, the light source 200 is an LED light source or a halogen lamp;
the condensing lens group 300 is disposed in front of the light path of the LED light source, and condenses the light emitted from the LED light source into the imaging objective 400; the imaging objective 400 images the tri-color filter 610 within the filter mount 600 at infinity.
(III) beneficial effects
Compared with the prior art, the gradient indicator flashing on-off mechanism has at least the following advantages:
1. the three-color visual near-advancing gradient indicator can be driven by only one motor to flash three colors of yellow flash, red flash and side flash, so that the mechanical and circuit structures are simplified, and the working noise is reduced
2. In the invention, the red shading plate intermittently shades the red area of the three-color filter, and red flash is in a normally open state; the yellow flashing light shielding plate and the side flashing light shielding plate can intermittently shield or completely open the yellow flashing area and the side flashing area of the three-color optical filter through the flashing on-off unit to realize the on-off functions of the yellow flashing and the side flashing, so that the three-flash on-off functions of the gradient indicator can be respectively realized.
3. The flashing on-off mechanism based on the steering engine does not need to control the stopping time of yellow flashing and side flashing through a precise photoelectric sensing device, and the precision requirement on a control circuit is reduced.
Drawings
FIG. 1 is a schematic view of a prior art three-color visual approach gradient indicator with light guidance;
FIG. 2 is a system block diagram of a grade indicator flashing on-off mechanism in accordance with an embodiment of the present invention;
FIG. 3 is an exploded view of the flash mechanism of FIG. 2;
FIG. 4 is an assembly relationship diagram of the turntable of FIG. 2;
FIG. 5 is a front view of the rotor of FIG. 2;
FIG. 6 is a schematic view of the mask and rail structure of FIG. 2;
FIG. 7 is an exploded view of a yellow flash mask;
FIG. 8 is a schematic view of a yellow flash mask in a shading operation state;
FIG. 9 is a schematic view of a yellow flash light shield in a light-shielding off state;
Fig. 10 is a schematic diagram of a process of restarting the flashing function of the yellow flashing light shield.
[ Main element ]
100-A heat dissipation module;
200-LED light source;
300-a condenser lens group;
400-imaging objective;
500-turntable mounting;
510-snap springs; 520-bearing; 530-bearing end caps;
540-a turntable;
541-side flash groove; 542-red flashing groove; 543-yellow flashing groove;
544-carousel gear; 545 process hole
600-Filter mount;
610-a trichromatic filter;
620-an optical filter press plate;
630-a visor rail;
640-red flashing light shield;
641-red-flashing connection bars; 642-adjusting block jackscrews;
643-red flashing block; 644-red flash barrier;
700-servo motor;
710-motor fixing plate; 720-motor gear;
800-side flash light shield;
900-yellow flashing light shield;
910-yellow flash barrier;
920-yellow flash connection rod;
921-external threads; 922-a spring limit table; 923-groove connector;
930-a spring;
940-yellow flashing adjusting block;
941-adjusting block opening; 942-adjusting block spring limit table;
950-steering engine;
960-steering engine connecting piece; 970-cams;
980-yellow flashing connecting arm;
981—a connecting arm groove; 982-connecting arm mounting holes;
990-jackscrew.
Detailed Description
Based on the fact that the visual approach flash mechanism in the prior art cannot control the on-off states of yellow flash, red flash and side flash in the three-color visual approach gradient indicator respectively, namely the same states of the yellow flash, the red flash and the side flash can be realized at the same time, the invention provides the gradient indicator flash on-off mechanism which can independently drive the flash states of the yellow flash, the red flash and the side flash based on a turntable transmission structure by using only one motor, wherein the red flash is in a normally open state, and the yellow flash and the side flash can be respectively in a flash on-off function through the flash on-off unit, so that the technical defects of the prior art are overcome.
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Referring to fig. 2, the embodiment of the invention provides a slope indicator flashing on-off mechanism, which includes: a light source (e.g., LED light source 200), a lens group, and a flash mechanism.
In addition, to prevent the temperature of the light source 200 in the slope indicator flashing on-off mechanism from being too high, a heat dissipation module 100 can be further arranged, and a power supply is arranged on the heat dissipation module 100.
The LED light source 200 is fixed to the heat dissipation module 100. A lens group is positioned in front of the optical path of the light source 200, and includes: the light collecting lens group 300 and the imaging objective lens 400, wherein the light collecting lens group 300 is arranged in front of the light path of the LED light source 200, and collects the light emitted by the LED light source 200 into the imaging objective lens 400; an imaging objective 400 for imaging the filter 610 in the filter mount 600 at infinity.
The turntable mounting 500, the filter mounting 600, the servo motor 700, the turntable 540 inside the device, and other internal structures together constitute a flashing mechanism for realizing the flashing function of the three-color visual approach gradient indicator, see fig. 3. The inside of the turntable mounting 500 is used to mount the turntable 540, the bearing 520, etc., with the front end connected to the imaging objective 400 and the rear end connected to the filter mounting 600. The filter mount 600 is used to mount a filter 610, a mask rail 630, a mask, etc. The front surface of the turntable 540 is provided with three closed groove tracks, the turntable 540 is driven by a servo motor 700 to rotate, and the three grooves (the red flash groove 542, the side flash groove 541 and the yellow flash groove 543) simultaneously drive two light shielding plates with cams 970 to perform shielding movement, so that shielding effect on corresponding areas of the imaging surface of the optical filter is realized. Two of the light shielding plates with cams 970 are referred to as a yellow flash light shielding plate (900) and a side flash light shielding plate (800), and each of the two light shielding plates comprises a flash on-off unit, thereby realizing the on-off functions of yellow flash and side flash.
The servo motor 700 is fixedly connected with the turntable mounting member 500 through a motor fixing plate 710, a turntable gear 544 formed by a circle of involute cylindrical teeth is arranged at the edge of the turntable 540, the turntable gear 544 is meshed with a motor gear 720 at the output end of the servo motor 700, and the servo motor 700 transmits rotary power to the turntable 540 through the motor gear 720.
The following describes the respective components of the three-color visual grade indicator of this embodiment in detail.
The heat dissipation module 100, the LED light source 200, the condenser lens assembly 300, and the imaging objective lens 400 in this example are all designed by using the conventional technology, and will not be described in detail herein.
Referring to fig. 2 and 3, a filter mounting member 600 is disposed between the condenser lens assembly 300 and the imaging lens 400, an imaging grating 613 is disposed in the middle of the filter mounting member 600, and a trichromatic filter 610 (or trichromatic glass sheet) can be pressed in a filter mounting groove of one end of the filter mounting member 600 near the light source 200 by a filter pressing plate 620.
The three-color filter has three color areas, namely a red area, a green area and a yellow area, and the side flash area is an area which is 10% of the right side of the effective light transmission area of the yellow and green filters along the light emitting direction.
The assembly positioning groove 611 on the filter mount 600 may be matched with the assembly positioning table 504 on the turntable mount 500 to enhance the coaxiality of the optical system. In addition, the motor mounting holes 612 on the filter mount 600 may enhance the limiting action on the servo motor 700.
As can be seen from the above description, the space occupied by the turntable 540 is located between the optical filter 610 and the imaging objective lens 400, so that the space of the apparatus is fully utilized, the structure of the apparatus is more compact, and the space occupied by the flash mechanism is reduced.
Fig. 3 is an exploded view of the flash mechanism of fig. 2, which is composed of the rotor mount, the filter mount, the servo motor, etc. Referring to fig. 2,3,4 and 5, a turntable 540 is mounted within the turntable mount 500 with its center axis coincident with the system optical axis. The side of the turntable 540 within the turntable 500 is a stepped structure that is coupled to the turntable mount 500 and other related components via bearings 520; the edge is a circle of rotating disc gear 544 formed by involute cylindrical teeth, which is meshed with a motor gear 720 at the output end of the servo motor 700; one surface of the turntable 540, which is located outside the turntable 500, comprises three circumferentially closed polar cosine curve grooves 541, 542, 543, and the turntable 540 provides motion tracks and power for the connecting rods of the three light shielding plates 640, 800, 900 through the three circumferentially closed polar cosine curve grooves 541, 542, 543.
The stepped structure of the turntable 540, the bearing 520 and the turntable mounting piece 500 are respectively restrained from relative movement in the axial direction by the clamp spring 510 and the bearing end cover 530, so that the turntable 540 is restrained relative to the turntable mounting piece 500 in the axial direction and can freely rotate around the optical axis in a radial plane. The servo motor 700 transmits the rotation power to the turntable gear 544 through the motor gear 720, and the turntable 540 can rotate around the optical axis of the optical system at a certain speed due to the coincidence of the center line of the bearing 520 and the optical axis of the optical system.
During the rotation of the turntable 540, the grooves on the front surface of the turntable 540 provide force for the connecting rods inserted into the grooves, namely, the side flash connecting rods (not shown), the yellow flash connecting rods 641 and the red flash connecting rods 920, and since the light shielding plate guide rail 630 is mounted on the filter mounting 600, the light shielding plate guide rail 630 can limit the movement of three light shielding plates in the tangential direction of the optical axis of the optical system, so that the three light shielding plates can only move along the radial direction of the optical axis of the optical system, so that the connecting rods can only move along the radial direction of the turntable 540 along with the turntable 540 to realize the flashing function of the light shielding plates.
In fig. 5, 545 is a process hole for the screw driver to pass through during assembly of the structure, and a hall sensor can be reserved for the hole to monitor the output of the three-color visual approach gradient indicator.
Referring to fig. 6, the three-color visual approach gradient indicator in the present embodiment includes three light-shielding plates, namely a yellow light-shielding plate 900 corresponding to yellow light, a red light-shielding plate 640 corresponding to red light, and a side light-shielding plate 800 corresponding to side light. According to the relation between the size of the three-color filter 610 and the curve of the groove track, the outline dimensions of the three light baffles are determined, the three light baffles are mutually independent, the used groove tracks are different, and the radial areas occupied by the three groove tracks are also different. The yellow flash and the side flash have flash on-off functions, and the red flash is in a normal flash state, because the red flash light shielding plate does not comprise a flash on-off unit with a steering engine, a cam and a flash connecting arm.
As shown in fig. 8, the red flash mask is basically constructed and driven in accordance with Huang Shanshan mask, which includes a red flash connection rod 641, a set block top screw 642, a red flash set block 643 and a red flash mask 644. It should be noted that the yellow flash light shielding plate and the side flash light shielding plate are added with flash on-off structures such as steering engine, cam, flash connecting arm, etc., so specific description of the red flash light shielding plate is omitted herein, and reference is made to the following description of the yellow flash light shielding plate for details.
Thus far, the principle method that the gradient indicator emits three-color light and flashes through the turntable 540 and the light shielding plate is explained, the structure and principle of the yellow flashing light shielding plate 900 and the side flashing light shielding plate 800 are basically identical, and the yellow flashing light shielding plate 900 is taken as an example to explain a flashing on-off mechanism based on the steering engine 950.
Fig. 7 shows an exploded view of the yellow flash barrier, and the system can be structurally divided into a yellow flash barrier related structure and a steering engine-cam structure.
The yellow flashing light shielding plate related structure comprises: a yellow flash light panel 910, a yellow flash connection lever 920, a spring 930, a yellow flash adjustment block 940, a yellow flash connection arm 980, and a top thread 990.
The yellow-flash light barrier 910 is a plate-shaped member, and is mainly used for shielding the corresponding imaging area of the optical filter, and the shielding edge should be knife-edge-shaped in order to improve the imaging quality of the shielding edge. The yellow flash adjustment block 940 is fixed to the end of the yellow flash light barrier 910 near the turntable 540, and the yellow flash light barrier 910 is located near the end of the three-color filter 610 at a distance of 0.5mm therefrom, thereby making the edge of the flash more clear.
The upper end of the yellow flash connection lever 920 has an external thread 921 which can be fixed to the connection arm mounting hole 982 of the yellow flash connection arm 980 through the adjustment block hole 941 of the yellow flash adjustment block 940 and locked by the top thread 990. A spring 930 is installed between the yellow flash connecting rod 920 and the yellow flash adjusting block 940, and the spring 930 performs bidirectional limiting through a spring limiting table 922 on the yellow flash connecting rod 920 and an adjusting block spring limiting table 942, so that the yellow flash connecting rod 920 is subjected to a downward elastic force. The yellow flash link arms 980 limit the maximum amount of extension of the springs 930, ensuring that the yellow flash link lever 920 does not touch the bottom of the yellow flash groove 543. The outer diameter of the spring limit 922 of the yellow flash connecting rod 920 is 0.1mm smaller than the inner diameter of the adjusting block opening 941, so that the relative movement of the yellow flash connecting rod 920 and the yellow flash adjusting block 940 in the radial direction of the optical axis is negligible.
The groove connector 923 at the lower end of the yellow flash connection rod 920 can be inserted into the yellow flash groove 543 of the turntable 540, and as the turntable 540 rotates around the optical axis, the yellow flash groove 543 provides an acting force along the radial direction of the turntable 540 for the yellow flash connection rod 920, and as the light shielding plate guide rail 630 limits the movement of the yellow flash light shielding plate 910 along the tangential direction of the optical axis, the movement of the yellow flash light shielding plate 910 along the tangential direction of the turntable 540 is limited, so that the yellow flash connection rod 920 only moves along the radial direction of the turntable 540 along with the turntable 540, so that the yellow region of the three-color filter 610 is shielded by the yellow flash light shielding plate 910 driven by the yellow flash adjusting block 940, and the shielding flash light shielding function of the light shielding plate is realized.
The yellow flash adjusting block 940 can fine-adjust the relative positions of the yellow flash connection lever 920 and the yellow flash light barrier 910, and control the distance between the yellow flash light barrier 910 and the corresponding shielding edge of the three-color filter 610.
Yellow flash mask 900 each contains a steering engine-cam structure comprising: steering gear 950, steering gear connector 960, cam 970. The steering engine 950 is fixed on the filter mounting piece 600, the steering engine connecting piece 960 is used for connecting the steering engine 950 and the cam 970, the cam 970 is driven by the steering engine 950 to rotate around the central shaft of the steering engine connecting piece 960, and the filter mounting piece 600 is provided with a groove to avoid the cam 970 from interfering with the cam 970.
Fig. 8, 9 and 10 are schematic views of the yellow flash light shielding plate in a normal working state, an off state and a restarting process, respectively, through which the working principle of the steering engine-cam structure is explained.
As shown in fig. 8, the distance from the upper end of the cam 970 to the central axis of the steering engine 950 is short, the cam 970 is separated from the yellow flash connecting arm 980, the yellow flash connecting arm 980 can move freely, the yellow flash connecting rod 920 is pressed into the yellow flash groove 543 of the turntable 540 by the elastic force of the spring 930, and the yellow flash light shielding plate 900 is driven to move by the yellow flash connecting rod 920 when the turntable 540 rotates, so that the yellow flash light shielding plate 900 works normally.
As shown in fig. 9, the steering engine 950 drives the cam 970 to rotate 180 ° counterclockwise, at this time, the distance from the upper end of the cam 970 to the central axis of the steering engine 950 is longer, the cam 970 jacks up the steering engine 950 through the connecting arm groove 981 on the yellow flash connecting arm 980, the spring 930 is in a compressed state, the yellow flash connecting rod 920 is separated from the closed yellow flash groove 543, the yellow flash connecting rod 920 does not move along with the rotation of the turntable 540, and at the same time, the left end of the cam 970 limits the right movement of the yellow flash connecting arm 980 to the shading direction, so that the yellow flash light barrier 910 is completely opened. At this time, the yellow flash off function is realized.
As shown in fig. 10, when the yellow flash needs to be turned on again, the steering engine 950 rotates 180 ° clockwise, and the right end of the cam 970 drives the yellow flash connection arm 980 to push the yellow flash connection rod 920 to the track range of the yellow flash groove 543 of the turntable 540; meanwhile, the upper end of the cam 970 is separated from the yellow flash connecting arm 980, and the spring 930 has downward elasticity to the yellow flash connecting rod 920, so that the groove connector 923 on the yellow flash connecting rod 920 is contacted with the turntable 540 again, the groove connector 923 is provided with a round chamfer, when the yellow flash groove 543 on the turntable 540 rotates to be consistent with the position of the yellow flash connecting rod 920, the groove connector enters the groove again, so that the yellow flash connecting rod 920 moves synchronously with the rotation of the turntable 540 again, and the yellow flash light shielding plate 900 is driven to perform reciprocating shielding movement in a yellow light beam area, so that the flash function is realized. At this time, the yellow flash light shielding plate 900 is restored to the operation state shown in fig. 8, and the flash is turned on again.
Unless otherwise known, the numerical parameters in this specification and the attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". In general, the meaning of expression is meant to include a variation of + -10% in some embodiments, a variation of + -5% in some embodiments, a variation of + -1% in some embodiments, and a variation of + -0.5% in some embodiments by a particular amount.
Furthermore, "comprising" does not exclude the presence of elements or steps not listed in a claim. The singular reference of "a", "an", and "the" preceding an element does not exclude the plural reference of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the description and the claims to modify a corresponding element does not by itself connote any ordinal number of elements or the order of manufacturing or use of the ordinal numbers in a particular claim, merely for enabling an element having a particular name to be clearly distinguished from another element having the same name.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (7)
1. A grade indicator flashing on-off mechanism comprising:
A light source (200);
A lens group positioned in front of the optical path of the light source (200) for converging light emitted from the light source (200), the lens group including a condensing lens group (300) and an imaging objective lens (400);
a flash mechanism comprising:
a filter mounting member (600) disposed between the condenser lens assembly (300) and the imaging objective lens (400), and having a three-color filter (610) disposed therein, the three-color filter including a red region, a yellow region, and a green region;
The front end of the turntable mounting piece (500) is connected with the imaging objective lens (400), and the rear end of the turntable mounting piece is connected with the optical filter mounting piece (600);
A turntable (540) installed in the turntable mounting piece (500), wherein the center axis coincides with the optical axis of the system, and three closed grooves are arranged on the front surface of the turntable;
The three light baffles are respectively a yellow flash light baffle (900), a red flash light baffle (640) and a side flash light baffle (800), the three light baffles are mutually independent and staggered, three connecting rods are arranged on the back surfaces of the three light baffles, the lower ends of the three connecting rods are inserted into corresponding closed grooves and can move along tracks defined by the closed grooves, the yellow flash light baffle (900) and the side flash light baffle (800) comprise flash on-off units, the structural types of the yellow flash light baffle (900) and the side flash light baffle (800) are the same, the closed grooves comprise yellow flash grooves (543), the connecting rods comprise yellow flash connecting rods (920), and the upper ends of the yellow flash connecting rods (920) are provided with external thread (921) structures;
The yellow flashing light shield further comprises: a yellow flash light barrier (910), wherein the yellow flash light barrier (910) is a plate-shaped member, and the yellow flash light barrier (910) is positioned at one end close to the three-color filter; the yellow flash connection rod (920) is fixed on the back surface of the yellow flash light barrier (910); the lower end of the yellow flash connecting rod (920) is inserted into a yellow flash groove (543) corresponding to the front surface of the turntable (540); the yellow flash connecting rod (920) moves along the radial direction of the turntable (540) along with the turntable (540) to drive the yellow flash light barrier (910) to shield the three-color filter (610);
The filter mounting piece (600) is provided with a light shielding plate guide rail (630), and the light shielding plate guide rail (630) limits the movement of three light shielding plates in the tangential direction of the optical axis of the optical system so that the three light shielding plates can only move along the radial direction of the optical axis of the optical system;
the flashing on-off unit comprises: steering engine (950), steering engine connecting piece (960), cam (970) and yellow flashing connecting arm (980),
The steering engine (950) is fixed on the filter mounting part, the steering engine connecting part (960) is used for connecting the steering engine (950) and the cam (970), the cam (970) is driven by the steering engine (950) to rotate around the central shaft of the steering engine connecting part (960), the filter mounting part is provided with a slot to avoid the cam (970) from interfering with the cam,
The yellow flashing connecting arm (980), a connecting arm mounting hole (982) of the yellow flashing connecting arm (980) is fixed with the yellow flashing connecting rod (920) through an adjusting block opening (941) of the yellow flashing adjusting block (940) and is locked through a jackscrew (990), and the maximum expansion amount of the spring (930) is limited by the yellow flashing connecting arm (980), so that the yellow flashing connecting rod (920) cannot touch the bottom of the yellow flashing groove (543);
Wherein, the turntable (540) is driven by a servo motor (700) to rotate, and the red flashing light shielding plate (640) intermittently shields the red area of the three-color filter (610) to realize the normally open function of red flashing; the yellow flashing light shielding plate (900) is used for intermittently shielding or completely opening a yellow region of the three-color filter (610) through the flashing on-off unit, so that the yellow flashing on-off function is realized; the side flash light shielding plate (800) is used for intermittently shielding or completely opening the side flash area of the three-color filter (610) through the flash on-off unit, so that the side flash on-off function is realized.
2. The grade indicator flash on-off mechanism of claim 1, wherein the yellow flash mask (900) further comprises: a yellow flash adjusting block (940) and a spring (930);
the yellow flashing adjusting block (940) is fixed at one end of the yellow flashing light barrier (910) close to the turntable (540);
A spring (930) is further arranged between the yellow flashing connecting rod (920) and the yellow flashing adjusting block (940), and the spring (930) carries out bidirectional limiting through a spring limiting table (922) on the yellow flashing connecting rod (920) and an adjusting block spring limiting table (942) so that the yellow flashing connecting rod (920) is subjected to downward elastic force;
The groove connector (923) at the lower end of the yellow flash connecting rod (920) can be inserted into the yellow flash groove (543) of the turntable (540), and the yellow flash groove (543) can provide a force along the radial direction of the turntable (540) for the yellow flash connecting rod (920) along with the rotation of the turntable (540) around the optical axis, and the movement of the yellow flash light barrier (910) along the tangential direction of the optical axis is limited by the light shielding plate guide rail (630), so that the yellow flash light barrier is limited in the tangential direction of the turntable (540).
3. The grade indicator flash on-off mechanism of claim 1, wherein the shielding edge of the yellow flash barrier (910) is knife-edge shaped;
The yellow flash light shield (800) further comprises: the yellow flashing adjusting block (940) is fixed at one end, close to the turntable (540), of the yellow flashing light barrier (910), the yellow flashing connecting rod (920) is located in the yellow flashing adjusting block (940), and the yellow flashing adjusting block (940) is used for adjusting the relative positions of the yellow flashing connecting rod (920) and the yellow flashing light barrier (910).
4. The grade indicator flash on-off mechanism of claim 1, wherein the yellow flash adjustment block (940) fine-adjusts the relative positions of the yellow flash tie bar (920) and the yellow flash barrier (910) to control the distance of the yellow flash barrier (910) from the corresponding blocking edge of the tri-color filter (610).
5. The grade indicator flash on-off mechanism of claim 2, wherein:
When the yellow flash light shielding plate (800) intermittently shields the Huang Shanshan area of the three-color filter (610), the distance from the upper end of the cam (970) to the central shaft of the steering engine (950) is short, the cam (970) is separated from the yellow flash connecting arm (980), the yellow flash connecting arm (980) can move freely, the yellow flash connecting rod (920) is pressed into the yellow flash groove (543) of the turntable (540) by the elasticity of the spring (930), and the turntable (540) drives the yellow flash light shielding plate (900) to move through the yellow flash connecting rod (920) when rotating;
When the yellow flash light shielding plate (800) is fully opened to the yellow flash area of the three-color filter (610), the steering engine (950) drives the cam (970) to rotate anticlockwise by 180 degrees, the distance from the upper end of the cam (970) to the central axis of the steering engine is longer, the cam (970) jacks up the steering engine (950) through the connecting arm groove (981) on the yellow flash connecting arm (980), the spring (930) is in a compressed state, the yellow flash connecting rod (920) is separated from the yellow flash groove (543), the yellow flash connecting rod (920) does not move along with the rotation of the turntable (540), and the left end of the cam (970) limits the yellow flash connecting arm (980) to move to the right of the light shielding, so that the yellow flash light shielding plate (910) is fully opened;
When the yellow flash area of the three-color filter (610) is converted from full opening to intermittent shielding by the yellow flash light shielding plate (800), the steering engine (950) rotates 180 degrees clockwise, and the right end of the cam (970) drives the yellow flash connecting arm (980) to push the yellow flash connecting rod (920) to the track range of the yellow flash groove (543) of the turntable (540); simultaneously, upper end and the yellow flash link arm (980) of cam (970) break away from, because spring (930) have decurrent elasticity to yellow flash connecting rod (920), make recess connector (923) on yellow flash connecting rod (920) and carousel (540) contact again, circular chamfer has on recess connector (923), when yellow flash recess (543) on carousel (540) rotate to the place unanimity with yellow flash connecting rod (920), recess connector (923) get into in the recess again, make yellow flash connecting rod (920) follow the rotation and synchronous motion that carousel (540) carried out again, drive yellow flash light baffle (900) and carry out reciprocal shielding motion in yellow region, realize the flash function.
6. The slope indicator flashing on-off mechanism of claim 1, wherein a step structure is provided on the back of the turntable (540), the turntable mounting member (500) is located at the periphery of the step structure, and a bearing (520) is provided therebetween to enable rotation of the turntable (540) in the axial direction relative to the turntable mounting member (500);
The servo motor (700) is fixedly connected with the turntable mounting piece (500) through a motor fixing plate (710), a turntable gear (544) formed by a circle of involute cylindrical teeth is arranged at the edge of the turntable (540), the turntable gear is meshed with a motor gear (720) at the output end of the servo motor (700), and the servo motor (700) transmits rotary power to the turntable (540) through the motor gear (720).
7. The grade indicator flash on-off mechanism of claim 1, wherein the light source (200) is an LED light source or a halogen lamp;
The condensing lens group (300) is arranged in front of the light path of the LED light source and is used for converging light emitted by the LED light source into the imaging objective lens (400); the imaging objective (400) images a three-color filter (610) within a filter mount (600) at infinity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811016914.1A CN109059855B (en) | 2018-08-31 | 2018-08-31 | Flash on-off mechanism of gradient indicator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811016914.1A CN109059855B (en) | 2018-08-31 | 2018-08-31 | Flash on-off mechanism of gradient indicator |
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| CN109059855A CN109059855A (en) | 2018-12-21 |
| CN109059855B true CN109059855B (en) | 2024-05-14 |
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| CN109059855A (en) | 2018-12-21 |
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