CN101639557A - Aperture device - Google Patents
Aperture device Download PDFInfo
- Publication number
- CN101639557A CN101639557A CN200910165552A CN200910165552A CN101639557A CN 101639557 A CN101639557 A CN 101639557A CN 200910165552 A CN200910165552 A CN 200910165552A CN 200910165552 A CN200910165552 A CN 200910165552A CN 101639557 A CN101639557 A CN 101639557A
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- mentioned
- rotor
- coil
- base
- housing
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- Granted
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- 230000005540 biological transmission Effects 0.000 claims abstract 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 36
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 14
- 239000004020 conductor Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Diaphragms For Cameras (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The present invention can realize the reduction of the whole thickness size of an aperture device by reducing the size in a rotor axis direction of an actuator to the utmost extent. The aperture comprises a base (11), an aperture blade (30) arranged on the base (11), a rotating type actuator (100) for driving the aperture blade, and a transmission mechanism (120) for transferring the action of theactuator to the aperture blade. The actuator comprises: a bottom cylinder shaped housing (110); a rotor (130) rotatably supported in the housing, of which two shaft ends (135 and 134) are embedded into a bearing hole (19) formed at the base and a bearing hole (117) formed at the bottom wall of the housing; a drive coil (140) inducing magnetic force to a magnet (138) of the rotor and leading the rotor to rotate, which is composed of hollow coils without coil frames, and an avoiding hole (18) arranged on the base, which can avoid the interference between the base and the hollow coils, thus leading the coil to close to the base side.
Description
Technical field
The present invention relates to the aperture device that optical devices such as video camera, camera, monitor are used.
Background technology
As this kind aperture device, the known device that record in the patent documentation 1 is arranged.
This aperture device possesses: the flat pedestal (base plate) with the peristome that becomes light path, the blade of diaphragm that passes through light quantity of the above-mentioned peristome of scalable when being slidably disposed on the pedestal and driving when being subjected to sliding, in order to drive blade of diaphragm self rotor axis is installed in rotary type actuator (motor) on the pedestal towards the direction vertical with pedestal, and the gear train that the rotational action conversion of rotor is transmitted into the sliding action of blade of diaphragm, actuator constitutes by the above-mentioned rotor with magnet with to the stator that rotor is given revolving force, this stator is to constitute by the periphery that coil is wrapped in the coil rack that is square shape, above-mentioned rotor is inserted into the inside of coil rack from the lateral opening of coil rack, and the axle head of rotor is provided in the bearing supporting in the coil rack and can does rotation.
Patent documentation 1: Japanese kokai publication hei 11-183962 communique
Yet, in the existing aperture device of putting down in writing in the above-mentioned patent documentation 1, owing to be used for the basis of the coil rack of winding around in use, utilize the axle head that is provided in the bearing supporting rotor in the coil rack again, therefore the size shortening on the rotor axis direction of actuator exists boundary, result to have the excessive problem of gauge of aperture device integral body.
Summary of the invention
The present invention In view of the foregoing, purpose is to provide a kind of aperture device, realizes the minimizingization of the gauge of aperture device integral body by the size on the rotor axis direction of doing one's utmost to shorten actuator.
Aperture device of the present invention in the technical scheme 1 possesses: the flat pedestal with the peristome that becomes light path; Be slidably disposed on this pedestal, and driven the blade of diaphragm that passes through light quantity of regulating above-mentioned peristome by sliding; Be used to drive the rotary type actuator of this blade of diaphragm, it is installed on this pedestal towards the mode perpendicular to the direction of said base with the pivot center of the rotor of self; And the rotational action conversion of above-mentioned rotor transmitted gear train for the sliding action of above-mentioned blade of diaphragm, above-mentioned actuator constitutes and comprises: the housing of bottom tube-like is arranged, and its openend links with it towards said base; The body of above-mentioned rotor, the two axial ends of body are embedded into respectively in the dead eye of dead eye that is formed at said base and the diapire that is formed at above-mentioned housing, are rotatably supported in thus in the above-mentioned housing; Magnet cylindraceous, it is adorned the periphery of solid body at this rotor, and is magnetized to magnetic pole and arranges on the circumferencial direction of self; And drive coil, it twines lead in the mode around central opening, and be configured in the side of the above-mentioned rotor that body and magnet by above-mentioned rotor constitutes, make the winding face of above-mentioned coil be positioned at the position parallel with the pivot center of above-mentioned rotor, and above-mentioned drive coil is installed in the above-mentioned housing in the mode of the part of the circumferencial direction of among above-mentioned central opening, accommodating above-mentioned magnet, by above-mentioned drive coil is switched on, give above-mentioned magnet magnetic force, make above-mentioned rotor rotation, above-mentioned drive coil is made of the air core coil of no coil rack, and said base is provided with and dodges the hole, and this is dodged the hole and can be avoided the interference between said base and above-mentioned air core coil and can make this air core coil close to above-mentioned base side.
The invention of technical scheme 2 is in the aperture device of technical scheme 1 record, and above-mentioned housing is provided with the wall almost parallel with above-mentioned rotor, and on this wall, be provided with can with the chimeric protuberance of central opening of the air core coil of above-mentioned no coil rack.
The invention of technical scheme 3 is in the aperture device of technical scheme 2 records, be provided with the absorption sheet at the back side of above-mentioned wall, its when above-mentioned air core coil no power, and above-mentioned magnet between give magnetic attracting force, the position of rotation with above-mentioned rotor is restricted to necessarily thus.
Invention according to technical scheme 1, use the air core coil of no coil rack as drive coil by removing coil rack, and come a side shaft end of supporting rotor with the dead eye that is formed on pedestal, again be provided with on the pedestal avoid and drive coil between interfere the dodging the hole of usefulness and make air core coil near pedestal, can reduce to comprise the gauge of aperture device integral body of the direction of principal axis size of actuator.
According to the invention of technical scheme 2, be fitted on the protuberance that is arranged on wall by the air core coil that will not have coil rack, can stably support coil thus.Can easily install, comprise location coil.
According to the invention of technical scheme 3, owing to utilize the wall of supporting coil that absorption sheet, the simplification of implementation structure are installed.
Description of drawings
Fig. 1 is the sectional view of the overview of the aperture device in the embodiment of the present invention.
Fig. 2 is the vertical view of the state of this aperture device of expression before actuator is installed.
Fig. 3 is the upward view of the state of this aperture device of expression before actuator is installed.
Fig. 4 is the vertical view of the part that actuator is housed of this aperture device.
Fig. 5 is the pie graph of actuator, and wherein (a) is vertical view, (b) is sectional view.
Fig. 6 is the pie graph of the housing of actuator, and wherein (a) is vertical view, (b) is sectional view.
Fig. 7 is the upward view of actuator, and wherein (a) is the figure of the state before the expression installation wiring substrate, (b) is the figure that the state of circuit board is equipped with in expression.
Symbol description is as follows:
11... pedestal; 14... central opening portion; 18... dodge the hole; 19... dead eye; 30... blade of diaphragm; 100... actuator; 110... housing; 114... wall; 115... protuberance; 117... dead eye; 120... gear train; 130... rotor; 131... the body of rotor; 138... magnet; 140... drive coil (air core coil of no coil rack); 150... absorption flat thin magnet.
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
Fig. 1 is the sectional view of the overview of aperture device in the embodiment, Fig. 2 is the vertical view of the state of this aperture device of expression before actuator is installed, Fig. 3 is the upward view of the state of this aperture device of expression before actuator is installed, Fig. 4 is the vertical view of the part that actuator is housed of this aperture device, Fig. 5 is the pie graph of actuator, wherein (a) is vertical view, (b) be sectional view, Fig. 6 is the pie graph of the housing of actuator, wherein (a) is vertical view, (b) is sectional view, and Fig. 7 is the upward view of actuator, wherein (a) is the figure of the state before the expression installation wiring substrate, (b) is the figure that the state of circuit board is equipped with in expression.
As Fig. 1～shown in Figure 3, this aperture device 10 has flat pedestal 11.The actuator installation portion 13 of the approximate rectangular shape that pedestal 11 is provided with circular blade installation portion 12 as its major part, stretch out to the outside of blade installation portion 12.Blade installation portion 12 is provided with the central opening portion 14 of the circle that becomes light path, is provided with shallow endless groove 15 around this peristome 14.In the outer upper surface of shallow endless groove 15, give prominence at interval with 120 degree in a circumferential direction and be provided with three little pins 17 in addition.In addition, the part from blade installation portion 12 to actuator installation portion 13 offers the window portion 16 that connects, actuator installation portion 13 is provided with dead eye 19, avoid and air core coil described later between interference dodge hole 18.
At the upper surface of the blade installation portion 12 of pedestal 11, the interval mountings with 120 degree are useful on three pieces of blades of diaphragm 30 that pass through light quantity of regulating central opening portion 14 in a circumferential direction.These blades of diaphragm 30, overlook down shape and be approximate C shape, be embedded into by axis hole 31 on the pin 17 of upper surface of blade installation portion 12 of pedestal 11 cardinal extremity, and be configured to can be separately pin 17 for fulcrum along the slip that rotates of the upper surface of pedestal 11, rotate by the interlock on pedestal 11, can regulate the aperture of the diaphragm in the central opening portion 14.In addition, near the formation slotted hole 32 cardinal extremity axis hole 31 of blade of diaphragm 30.
In addition, on the shallow endless groove 15 around the central opening portion 14 of pedestal 11, contain driving ring 20 rotationally, it is used to drive three pieces of blade of diaphragm 30 interlocks.Driving ring 20 is thin discoideus ring, has the drive pin 22 that projects upwards on 120 positions of spending, three places at interval at circumferencial direction, and has to the outstanding bar 21 in the radial direction outside in the position, a place of circumferencial direction.Three drive pins 22 engage with the slotted hole 32 of each blade of diaphragm 30, and by the rotation of driving ring 20, each blade of diaphragm 30 is rotated linkedly.In addition, bar 21 extends in the connection window portion 16 of pedestal 11, and forms slotted hole 25 on this part.
In addition, at the upside of pedestal 11 takeing in the state cover 80 of driving ring 20, blade of diaphragm 30, cover 80 by screw retention on pedestal 11.At the lower surface of the actuator installation portion 13 of pedestal 11, as Fig. 1, shown in Figure 4, the rotary type actuator 100 that is used to drive blade of diaphragm 30 is installed, and the pivot center of the rotor 130 of actuator 100 self is towards the direction vertical with pedestal 11 by screw.
As Fig. 1 and Fig. 5～shown in Figure 7, this actuator 100 has: the housing 110 of bottom tube-like is arranged, and it links by screw and pedestal 11 in the mode of openend towards the lower surface of the actuator installation portion 13 of pedestal 11; Rotor 130, its two axial ends 135,134 are embedded into the dead eye 19 on the actuator installation portion 13 that is formed at pedestal 11 respectively and are formed at dead eye 117 on the diapire 111 of housing 110, and can be rotated to support in the housing 110.
Periphery at the body 131 of rotor 130, adorn the intrinsic magnet cylindraceous 138 that is magnetized along the mode of circumferential array with magnetic pole, magnet 138 is fitted on the fin 136 of rotor body 131 by the end face groove of self, and combines rotatably with rotor body 131 one.
In the side of rotor 130, the drive coil 140 of the side's of configuration ring-type, and make the winding face of coil be positioned at parallel with the pivot center of rotor 130.Drive coil 140 is to twine lead around the mode of square central opening, to constitute the air core coil of no coil rack.
So, so be installed on the part of the drive coil (air core coil) 140 in the housing 110, by enter into avoid and 11 interference of pedestal dodge hole 18, thereby set drive coil 140 in the position of as close as possible pedestal 11.
In addition, at an end of the rotor 130 of actuator 100, the form of extending with the radial direction along rotor 130 is provided with bar 132.Erect on the head end upper surface of this bar 132 and be provided with drive pin 133, this drive pin 133 passes the connection window portion 16 of pedestal 11, engages with the slotted hole 25 of the bar 21 of the driving ring 20 of the upper surface side that is configured in pedestal 11.The rotation of the bar 132 by actuator 100 can drive driving ring 20 and rotates thus.Therefore, each member from the bar 132 of actuator 100 to driving ring 20 constitutes the gear train 120 that the rotational action conversion of the rotor 130 of actuator 100 is transmitted into the rotational slide action of blade of diaphragm 30.
In addition, on the housing 110 of actuator 100, be provided with the cylinder 160 of magnetic metal in the mode of surrounding rotor 130, drive coil 140 etc., absorption flat thin magnet (absorption sheet) 150 is installed at the back side of wall 114, they are when drive coil 140 no powers, and magnet 138 between give magnetic attracting force, the position of rotation with rotor 130 is restricted to necessarily thus.In addition, be used for end and the circuit board 170 that outside wiring is connected,, be installed in the outside surface of the diapire 111 of housing 110 with the state of mounting on the supporting protuberance 118 of the outside surface of diapire 111 with the lead of drive coil 140.
In this case, as shown in Figure 7, the diapire aperture 119 that the end of the lead of drive coil 140 can be passed housing 110 is pulled out to the outside, be connected by the end 171a of soldering again, and soldering is connected up in the other end 171b of the conductor 171 of circuit board 170 in the outside with the conductor 171 of circuit board 170.
Below effect is described.
When to drive coil 140 energisings, rotor 130 rotates.Rotor 130 utilize the rotation of driving ring 20 that blade of diaphragm 30 interlocks are rotated, the adjusting aperture of the diaphragm in case rotation can drive driving ring 20 and rotate by the action of bar 132.After finishing energising, between the magnet 138 of the rotor 130 that adsorbs flat thin magnet 150 and free state, produce attractive force, thus rotor 130 is remained on the fixed position, make blade of diaphragm 30 remain on predetermined aperture location.
According to this aperture device, use the air core coil of no coil rack as drive coil 140 by removing coil rack, and come a side shaft end 135 of supporting rotor 130 with the dead eye 19 that is formed on pedestal 11, on pedestal 11, be provided with again and avoid and the dodging hole 18 of 140 interference usefulness of drive coil and make drive coil 140 near pedestals 11, can reduce to comprise the gauge H (Fig. 1) of aperture device integral body of the direction of principal axis size of actuator 100, be beneficial to the realization of densification.
In addition, be not fitted to the protuberance 115 that is provided with on the wall 114, therefore can stably support coil 140, can easily realize installing the location that comprises coil 140 owing to will there be the air core coil (drive coil) 140 of coil rack.In addition, owing to utilize the wall 114 of supporting coil 140 that absorption flat thin magnet 150 is installed, historical facts or anecdotes has showed the simplification that constitutes.
In addition, in the above-described embodiment,, shown situation is three pieces, and is configured at interval that the quantity of blade of diaphragm also can be the quantity beyond three pieces with 120 degree though being blade of diaphragm 30.For example can be equally spaced to dispose five or six pieces of blades of diaphragm in a circumferential direction.
Claims (3)
1. an aperture device is characterized in that,
Possess: flat pedestal with the peristome that becomes light path;
Be slidably disposed on this pedestal, and driven the blade of diaphragm that passes through light quantity of regulating above-mentioned peristome by sliding;
Be used to drive the rotary type actuator of this blade of diaphragm, it is installed on this pedestal towards the mode perpendicular to the direction of said base with the pivot center of the rotor of self; And
With the rotational action conversion transmission of above-mentioned rotor is the gear train of the sliding action of above-mentioned blade of diaphragm,
Above-mentioned actuator formation comprises:
The housing that bottom tube-like is arranged, its openend link with it towards said base;
The body of above-mentioned rotor, the two axial ends of body are embedded into respectively in the dead eye of dead eye that is formed at said base and the diapire that is formed at above-mentioned housing, are supported in the above-mentioned housing thus rotationally;
Magnet cylindraceous, it is adorned the periphery of solid body at this rotor, and is magnetized to magnetic pole and arranges on the circumferencial direction of self; And
Drive coil, it twines lead in the mode around central opening, and be configured in the side of the above-mentioned rotor that body and magnet by above-mentioned rotor constitutes, make the winding face of above-mentioned coil be positioned at the position parallel with the pivot center of above-mentioned rotor, and in the mode of the part of the circumferencial direction of among above-mentioned central opening, accommodating above-mentioned magnet above-mentioned drive coil is installed in the above-mentioned housing, by to above-mentioned drive coil energising, give above-mentioned magnet magnetic force, make above-mentioned rotor rotation
Above-mentioned drive coil is made of the air core coil of no coil rack,
And said base is provided with and dodges the hole, and this is dodged the hole and can be avoided the interference between said base and above-mentioned air core coil and can make this air core coil close to above-mentioned base side.
2. aperture device according to claim 1 is characterized in that,
Above-mentioned housing is provided with the wall almost parallel with above-mentioned rotor, and on this wall, be provided with can with the chimeric protuberance of central opening of the air core coil of above-mentioned no coil rack.
3. aperture device according to claim 2 is characterized in that,
Be provided with the absorption sheet at the back side of above-mentioned wall, its when above-mentioned air core coil no power, and above-mentioned magnet between give magnetic attracting force, the position of rotation with above-mentioned rotor is restricted to necessarily thus.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008005290U JP3145532U (en) | 2008-07-30 | 2008-07-30 | Aperture device |
| JP2008-005290 | 2008-07-30 | ||
| JP2008005290 | 2008-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101639557A true CN101639557A (en) | 2010-02-03 |
| CN101639557B CN101639557B (en) | 2011-12-07 |
Family
ID=42087800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101655527A Expired - Fee Related CN101639557B (en) | 2008-07-30 | 2009-07-30 | Aperture device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3145532U (en) |
| KR (1) | KR101024840B1 (en) |
| CN (1) | CN101639557B (en) |
| TW (1) | TWI403825B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765671A (en) * | 2017-11-09 | 2019-05-17 | 三星电机株式会社 | Camera model |
| WO2022257989A1 (en) * | 2021-06-11 | 2022-12-15 | 华为技术有限公司 | Iris diaphragm, camera module and electronic apparatus |
| CN117148647A (en) * | 2023-02-24 | 2023-12-01 | 荣耀终端有限公司 | Diaphragm, imaging device, and electronic apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7513702B2 (en) * | 2005-11-16 | 2009-04-07 | Va, Inc. | Non-contact shutter activation system and method |
| JP6580819B2 (en) * | 2014-10-01 | 2019-09-25 | キヤノン電子株式会社 | Blade driving device and imaging device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3038874B2 (en) * | 1990-10-16 | 2000-05-08 | ソニー株式会社 | Imaging device |
| JPH0713215A (en) * | 1993-06-29 | 1995-01-17 | Canon Inc | Diaphragm device |
| JP4191524B2 (en) * | 2003-04-02 | 2008-12-03 | 日本電産コパル株式会社 | Camera aperture device |
| JP2004258062A (en) * | 2003-02-24 | 2004-09-16 | Alps Electric Co Ltd | Shutter driving device used also as diaphragm |
| GB2416218B (en) * | 2003-05-29 | 2007-03-21 | Nihon Seimitsu Sokki Co Ltd | Diaphragm device |
| TWM244486U (en) * | 2003-07-22 | 2004-09-21 | Ming-Jian Chen | Improved shutter and diaphragm structure of camera |
| JP2005099155A (en) * | 2003-09-22 | 2005-04-14 | Nidec Copal Corp | Camera diaphragm device |
| JP2005107173A (en) * | 2003-09-30 | 2005-04-21 | Nidec Copal Corp | Diaphragm device for camera |
| JP4908741B2 (en) * | 2004-03-25 | 2012-04-04 | セイコープレシジョン株式会社 | Aperture device and digital camera using the same |
| JP2008086063A (en) * | 2006-09-26 | 2008-04-10 | Olympus Corp | Macromolecule actuator and optical diaphragm |
| KR100869715B1 (en) * | 2007-03-07 | 2008-11-21 | 자화전자(주) | Actuator and shutter having the same actuator |
-
2008
- 2008-07-30 JP JP2008005290U patent/JP3145532U/en not_active Expired - Lifetime
-
2009
- 2009-07-29 TW TW098125511A patent/TWI403825B/en not_active IP Right Cessation
- 2009-07-29 KR KR1020090069613A patent/KR101024840B1/en not_active IP Right Cessation
- 2009-07-30 CN CN2009101655527A patent/CN101639557B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765671A (en) * | 2017-11-09 | 2019-05-17 | 三星电机株式会社 | Camera model |
| CN109765671B (en) * | 2017-11-09 | 2022-03-15 | 三星电机株式会社 | Camera module |
| WO2022257989A1 (en) * | 2021-06-11 | 2022-12-15 | 华为技术有限公司 | Iris diaphragm, camera module and electronic apparatus |
| CN117148647A (en) * | 2023-02-24 | 2023-12-01 | 荣耀终端有限公司 | Diaphragm, imaging device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101639557B (en) | 2011-12-07 |
| KR20100013278A (en) | 2010-02-09 |
| TW201005426A (en) | 2010-02-01 |
| TWI403825B (en) | 2013-08-01 |
| KR101024840B1 (en) | 2011-03-28 |
| JP3145532U (en) | 2008-10-09 |
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