CN102508389B - Shutter with large aperture - Google Patents
Shutter with large aperture Download PDFInfo
- Publication number
- CN102508389B CN102508389B CN2011103567621A CN201110356762A CN102508389B CN 102508389 B CN102508389 B CN 102508389B CN 2011103567621 A CN2011103567621 A CN 2011103567621A CN 201110356762 A CN201110356762 A CN 201110356762A CN 102508389 B CN102508389 B CN 102508389B
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- conveying belt
- base
- synchrome conveying
- shutter
- driving wheel
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Abstract
The invention discloses a shutter with a large aperture, comprising a base and a blade driving mechanism arranged at one side of the base, wherein the base is provided with a central hole with the same exposure area with the shutter, and the blade driving mechanism consists of two synchronous conveyor belt wheel sets comprising two driving wheels, two driven wheels and two synchronous conveyor belts. The two driving wheels are arranged on a motor base fixed on the base through the same central shaft, the two driven wheels are arranged on a driven wheel base fixed on the base through the same central shaft, the synchronous conveyor belts are arranged on the driving wheels and the driven wheels, a tensioning wheel is fixedly arranged on the base and at the inner sides of the driving wheels and the driven wheels, the upper half parts of the two synchronous conveyor belts are fixed on positions slightly higher than the upper surface of the base, gaps are remained between the upper half parts of the two synchronous conveyor belts and used for fixedly installing blades, and one ends of the two blades are respectively fixed on the upper parts of the two synchronous conveyor belts through synchronous belt connecting pieces. The aperture of the shutter is up to phi 200mm, and the exposure time can be set according to the actual demands.
Description
Technical field
The invention belongs to optical detection Instrument Design field, particularly relate to a kind of heavy caliber synchronous pulley shutter device.
Background technology
The restriction of tradition telescope acceptor's aperture of mirror and detector target surface size, little to the demand of shutter clear aperture, generally by buying external clear aperture, less than the shutter of φ 100mm, can satisfy the demands.Increase along with telescope primary mirror bore and detector target surface, demand to the shutter clear aperture also further increases, by foreign procurement, can not buy again the desired shutter that meets clear aperture and dimensional requirement, impel us must invent out voluntarily a kind of shutter that meets request for utilization.
Traditional shutter structure form has leaf type shutter and central shutter.The ultimate principle of leaf type shutter is by the driven by motor linkage assembly, to control each blade to do the switch motion.Leaf type shutter often uses in camera, the shutter external form of this version is rectangle, the blade of shutter is by thickness, to be about the steel disc making of 0.1mm, its advantage is that blade is light, the shutter release time is short, the response fast, shortcoming is because the blade of shutter is very thin, greatly to a timing, vibration and distortion will occur in blade in the high-speed motion process, so this version can not be made the shutter of large clear aperture when blade.The ultimate principle of central shutter is to do the switch motion by each blade of electromagnet drivening rod mechanism controls.Leaf type shutter often uses in race glass, the shutter external form of this version is circular, the blade of shutter is also by thickness, to be about the steel disc making of 0.1mm, its advantage is also that blade is light, the shutter release time is short, the response fast, shortcoming is also because the blade of shutter is very thin, greatly to a timing, vibration and distortion also will occur in blade in the high-speed motion process, so the shutter of this version can not be made the shutter of large clear aperture when blade.
United States Patent (USP) " large aperture focal plane shutter " (patent No. US7604422, Large aperture focal plane shutter), disclose a kind of shutter of synchrome conveying belt as conveyer that utilize, specifically adopted the synchrome conveying belt on base both sides to drive the opening and closing that blade movement is realized shutter.In fact, this kind design can not accomplish that in practice the synchrome conveying belt motion on base both sides is in full accord, easily causes blade to block.And one-piece construction is loaded down with trivial details, and space availability ratio is lower, does not have actual operation.
Summary of the invention
The technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of large clear aperture shutter is provided, and the time shutter can arrange according to the actual requirements.
The technology of the present invention solution: a kind of large clear aperture shutter, it is characterized in that comprising base, be arranged on the vane drive mechanism of base both sides, described base is provided with the center pit identical with the shutter exposure area, vane drive mechanism is comprised of two width synchrome conveying belt wheels, comprising driving wheel, engaged wheel and synchrome conveying belt.The concentricity axle of two driving wheels is arranged on the motor cabinet that is fixed in base, the concentricity axle of two engaged wheels is arranged on the driving wheel seat that is fixed in base, two width synchrome conveying belt the first half are fixed on a little more than the base upper surface position, between the first half of two width synchrome conveying belts, leave the 2mm gap, for fixedly mounting blade, two blade one ends are separately fixed at the upper part of two width synchrome conveying belts by synchronous belt connecting piece, the two blade other ends are placed on the track the inside.
Between described synchrome conveying belt one and synchrome conveying belt two and base, leave gap, to guarantee synchrome conveying belt one and synchrome conveying belt two, move horizontally smooth and easy.
Described synchrome conveying belt inner ring face is the flank of tooth, is convenient to be connected with blade.
Described synchronous belt connecting piece and synchrome conveying belt web member are flank engagement, blade are connected more fastening with Timing Belt, and motion response is faster.
The present invention's advantage compared with prior art is:
(1) clear aperture of the present invention reaches φ 200mm, and the time shutter can arrange according to the actual requirements by the speed that the control blade opens or closes.
(2) version of the present invention is simple, can independently assemble, move, and is convenient to integral installation and dismounting.
(3) the present invention, owing to adopting synchrome conveying belt, is in operation shutter more efficient, quick, steady, accurate; Blade adopts carbon fiber board, and quality is low, good rigidity, and two ends all fixedly make it steady in motion process, reliable, and vibration and distortion can not occur.
The drawing explanation
Fig. 1 is synchronous pulley shutter perspective view of the present invention;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the A-A cut-open view of Fig. 1.
Embodiment
As shown in Figure 1, comprise that base 1 is the pedestal of whole mechanism, 10,1 driving wheel of 3,1 tension pulley seat of 13,1 engaged wheel base of 1 motor base 1, the secondary Timing Belt 26 of the secondary synchronous driving one 7,1 of one 4,1 engaged wheel 25,1 of 2 12,1 engaged wheel of driving wheel are arranged on base one side.motor base 13 and engaged wheel base 3 are arranged on base 1 left and right sides, driving wheel 1 and the concentricity axle of driving wheel 2 12 are fixed on motor base 13, engaged wheel 1 and the concentricity axle of engaged wheel 25 are fixed on engaged wheel base 3, adjust on motor base 13 and engaged wheel base 3 the waist hole with guarantee synchrome conveying belt 26 and be connected on belt wheel the rear upper part level and with base 1 upper surface in same level, here in order to alleviate the quality driving wheel 1 of shutter, driving wheel 2 12, engaged wheel 1 and engaged wheel 25 all adopt aluminum to do, in the middle of belt wheel, punch to alleviate quality simultaneously, synchrome conveying belt 1 and synchronous driving 26 are neoprene, between the first half of synchrome conveying belt 1 and synchrome conveying belt 26, leave the 2mm gap, 1 tension pulley seat 10 is arranged on base 1, guarantees on synchrome conveying belt 1 part of horizontal and higher than part 3mm on synchrome conveying belt 26, in order to alleviate quality, tension pulley seat 10 also adopts aluminum to do.Two blade 8 lower surfaces respectively with synchrome conveying belt 1 and synchrome conveying belt 26 tops exceptionally smooth surface contact, one end is by the synchronous belt connecting piece 9 upper partial fixing of synchrome conveying belts 1 and synchrome conveying belt 26 respectively, synchronous belt connecting piece 9 upper surface center section bands fluted with synchrome conveying belt on the engagement of part inner toothed surface.Blade collision when two blades 8 are not in same level for fear of closure, and guarantee when closed to close fully.Two blades 8 all adopt the carbon fiber board of 1mm, when reducing quality, guarantee rigidity, and two synchronous belt connecting pieces 9 all adopt aluminium manufacture to reduce quality.
As shown in Figure 2, on synchrome conveying belt 1, part keeps with base 1 plane parallel and higher than part 3mm on synchrome conveying belt 26 by 1 stretching pulley 10, the blade 8 that 1mm is thick like this and synchrome conveying belt one 7 tops exceptionally shiny surface contact and by synchronous belt connecting piece 9, to be fixed on synchrome conveying belt 1 part upper, can avoid interfering between two blades 8; On synchrome conveying belt 26, part also keeps surperficial parallel with base 1 and at a surface level by driving wheel 2 12 and engaged wheel 25.
As shown in Figure 3, synchrome conveying belt 1 and synchrome conveying belt 26 inner ring faces are the flank of tooth, in the middle of synchronous belt connecting piece 9, have dug groove and Timing Belt inner mesh, and synchronous belt connecting piece 9 two ends are fixed with blade 8, thereby realize that blade 8 and Timing Belt fix.
Principle of the present invention is: by computing machine, provide instruction and drives such as control the startup of motor, rotate and stop and being fixed on driving wheel 1 and driving wheel 2 12 rotations on motor base 13, thereby synchrome conveying belt 1 and Timing Belt 26 motions, synchrome conveying belt drive by synchronous belt connecting piece 9 and are fixed on blade 8 motions on synchrome conveying belt; Because driving wheel 1 and driving wheel 2 12 are coaxial rotation, therefore between Timing Belt 1 and Timing Belt 26, linear velocity is than being driving wheel 1 and driving wheel 2 12 radius ratios, in like manner the distance of two blade movements, than being radius ratio between driving wheel 1 and driving wheel 2 12, coordinates the lower opening and closing that can realize shutter like this.
Claims (4)
1. large clear aperture shutter is characterized in that comprising: base (1), be arranged on the vane drive mechanism of base (1) one side, and described base (1) is provided with the center pit identical with the shutter exposure area, described vane drive mechanism is comprised of two width Timing Belt wheels, comprising driving wheel one (11) and driving wheel two (12), engaged wheel one (4) and engaged wheel two (5), synchrome conveying belt one (7) and synchrome conveying belt two (6), driving wheel one (11) and driving wheel two (12) concentricity axles are arranged on the motor cabinet (13) that is fixed in base (1), engaged wheel one (4) and engaged wheel two (5) concentricity axles are arranged on the engaged wheel base (3) that is fixed in base (1), synchrome conveying belt one (7) is arranged on driving wheel one (11) and engaged wheel one (4), synchrome conveying belt two (6) is arranged on driving wheel two (12) and engaged wheel two (5), on stretching pulley (10) fixed installation base (1), driving wheel one (11), driving wheel two (12) and engaged wheel one (4), the inboard of engaged wheel two (5), synchrome conveying belt one (7) and synchrome conveying belt two (6) the first half are fixed on a little more than base (1) upper surface position, between the first half of synchrome conveying belt one (7) and synchrome conveying belt two (6), leave gap, for fixedly mounting blade (8), two blade (8) one ends are separately fixed at the upper part of synchrome conveying belt one (7) and synchrome conveying belt two (6) by synchronous belt connecting piece (9), two blades (8) other end is placed on track (2) the inside, on synchrome conveying belt 1, part keeps with base (1) plane parallel and higher than the upper part of synchrome conveying belt two (6) by 1 stretching pulley (10).
2. a kind of large clear aperture shutter according to claim 1, it is characterized in that: between described synchrome conveying belt one (7) and synchrome conveying belt two (6) and base (1), leave gap, to guarantee synchrome conveying belt one (7) and synchrome conveying belt two (6), move horizontally smooth and easy.
3. a kind of large clear aperture shutter according to claim 1 and 2, it is characterized in that: described synchrome conveying belt one (7) and synchrome conveying belt two (6) inner ring faces are the flank of tooth.
4. a kind of large clear aperture shutter according to claim 3 is characterized in that: described synchronous belt connecting piece (9) is flank engagement with synchrome conveying belt one (7) and synchrome conveying belt two (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103567621A CN102508389B (en) | 2011-11-11 | 2011-11-11 | Shutter with large aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103567621A CN102508389B (en) | 2011-11-11 | 2011-11-11 | Shutter with large aperture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102508389A CN102508389A (en) | 2012-06-20 |
| CN102508389B true CN102508389B (en) | 2013-11-20 |
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ID=46220492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103567621A Expired - Fee Related CN102508389B (en) | 2011-11-11 | 2011-11-11 | Shutter with large aperture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102508389B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7002233B2 (en) * | 2017-06-30 | 2022-01-20 | キヤノン電子株式会社 | Shutter and image pickup device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3232690A (en) * | 1963-09-06 | 1966-02-01 | Eastman Kodak Co | Shutter mechanism |
| CN1707356A (en) * | 2004-06-08 | 2005-12-14 | 中国科学院长春光学精密机械与物理研究所 | Automatic shutter mechanism for synchronous camera |
| CN101718945A (en) * | 2009-11-24 | 2010-06-02 | 中国科学院长春光学精密机械与物理研究所 | Aerial photograph central type shutter mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07181543A (en) * | 1993-12-21 | 1995-07-21 | Ricoh Co Ltd | Shutter controller for traffic state photographing device |
| US7604422B2 (en) * | 2006-12-11 | 2009-10-20 | Massachusetts Institute Of Technology | Large-aperture focal plane shutter |
-
2011
- 2011-11-11 CN CN2011103567621A patent/CN102508389B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3232690A (en) * | 1963-09-06 | 1966-02-01 | Eastman Kodak Co | Shutter mechanism |
| CN1707356A (en) * | 2004-06-08 | 2005-12-14 | 中国科学院长春光学精密机械与物理研究所 | Automatic shutter mechanism for synchronous camera |
| CN101718945A (en) * | 2009-11-24 | 2010-06-02 | 中国科学院长春光学精密机械与物理研究所 | Aerial photograph central type shutter mechanism |
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| Publication number | Publication date |
|---|---|
| CN102508389A (en) | 2012-06-20 |
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