CN104166294A - Focal plane shutter structure - Google Patents
Focal plane shutter structure Download PDFInfo
- Publication number
- CN104166294A CN104166294A CN201410395383.7A CN201410395383A CN104166294A CN 104166294 A CN104166294 A CN 104166294A CN 201410395383 A CN201410395383 A CN 201410395383A CN 104166294 A CN104166294 A CN 104166294A
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- blade
- motor
- shutter
- fixed head
- lower blade
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Abstract
The invention relates to a focal plane shutter structure which comprises a motor, a motor base, a spring, a shutter fixing plate, an upper blade and a lower blade. The motor base is fixed to the motor, the motor is provided with a motor shaft extending out of the motor and capable of rotating, the motor base is provided with a through hole matched with the motor shaft in structure and position, and the motor shaft can penetrate through the through hole. The shutter fixing plate is fixedly connected with the end, away from the motor, of the motor shaft, the motor base is located between the shutter fixing plate and the motor, and the motor shaft rotates and can drive the shutter fixing plate to rotate. The upper blade is arranged on the lower blade in a stacked mode, and the upper blade and the lower blade are fixed to the upper surface of the shutter fixing plate through a snap spring and a screw. A boss is arranged on the motor base, the spring is arranged on the motor shaft in a sleeved and surrounding mode, one end of the spring is fixed to the motor base, and the other end of the spring is clamped on the boss. The focal plane shutter structure is driven by the motor, the structure of the double blades is adopted, the size of the shutter driving device is greatly reduced, the shutter stability is improved, and miniaturization of electronic imaging equipment is ensured.
Description
Technical field
The present invention relates to the electronic imaging device fields such as camera, video camera, camera phone, thermal infrared imager, be specifically related to a kind of focal plane shutter structure.
Background technology
In recent years, the size of camera model is dwindled along with technical development, yet blade drive device size is still restricting the size of camera model, and this phenomenon is particularly outstanding in infrared industry.Infrared industry limits because of chip manufacturing process, and focal plane size is larger, and shutter size is visible ray shutter several times, thereby causes whole infrared camera size huge.Tradition blade drive device adopts driven by motor list blade rotary (as shown in Figure 1) or solenoid-driven blade movement (as shown in Figure 2) to realize opening and closure of shutter more.
Structure shown in Fig. 1 comprises conventional motors 1, traditional blade 2, traditional focal plane 3 and support 4.Conventional motors 1 is fixed on support 4, and traditional blade 2 is fixed on the axle of conventional motors 1, and traditional blade 2 rotates under the drive of conventional motors 1, blocks traditional focal plane 3, thereby realizes closing of light path.In like manner conventional motors 1 reverse rotation, drives traditional blade 2 to leave traditional focal plane 3, realizes opening of light path.
Structure shown in Fig. 2 comprises solenoid valve 8, housing 5, the first blade 9, the second blade 10 and aperture 11.Solenoid valve 8 comprises electromagnetic block 6 and solenoid valve rocking handle 7, the first blade 9 and the second blade 10 are fixed on housing 5, and can slide along the direction of arrow, solenoid valve rocking handle 7 ends are connected with the chute 12 on the second blade 10 with the first blade 9, and can slide within it.After solenoid valve 8 energisings, solenoid valve rocking handle 7 rotates under magnetic fields, drives the first blade 9 and the second blade 10 to slide by chute 12 simultaneously, thereby realizes the light path open and close of aperture 11.
Above-mentioned traditional blade drive device all has shortcoming, and the shortcoming of Fig. 1 structure is only to use single blade shutter, takes up space larger after shutter Unscrew, has limited the miniaturization development of camera model; The shortcoming of Fig. 2 structure be rocking handle must long enough to meet the stroke demand of blade, and after rocking handle lengthening, the arm of force strengthens, cause solenoid-driven power to increase, can only select larger solenoid valve again conversely, finally cause increased power, volume also can hurriedly increase, and is unfavorable for low-power consumption, the miniaturization development of camera model.
Summary of the invention
For addressing the above problem, technical matters to be solved by this invention is to provide a kind of stable performance, rational in infrastructure, the focal plane shutter structure that size is less.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of focal plane shutter structure, comprise motor, motor cabinet, spring, shutter fixed head, blade, lower blade, described motor cabinet is fixed on described motor, described motor is provided with and stretches out the outer also rotating motor shaft of described motor, described motor cabinet is provided with the through hole matching with described motor shaft structure position, and described motor shaft can pass described through hole; Described shutter fixed head is fixedly connected with described motor shaft one end away from described motor, and described motor cavity is between described shutter fixed head and described motor, and described motor shaft rotates and can drive described shutter fixed head to rotate; Described blade overlays on described lower blade, and described blade and described lower blade are fixed on the upper surface of shutter fixed head by jump ring and screw; Described motor cabinet is provided with for limiting the boss of described blade and described lower blade slewing area, and described spring housing is on described motor shaft, and one end of described spring is fixed on described motor cabinet, and the other end is stuck on described boss.
Adopting the beneficial effect of technique scheme is that the present invention adopts Double-blade type structure, twayblade is all fixed on described shutter fixed head, described shutter fixed head with stretch out the outer and rotating motor shaft of described motor and be connected, during electric motor starting, under driven by motor, motor shaft rotates, and then the shutter fixed head that drive and motor shaft are fixedly linked rotates, be fixed on the blade and lower blade also rotation thereupon of shutter fixed head upper surface, thereby realize the open and close of shutter; Spring is equipped with in shutter fixed head bottom, and the elastic force that described spring provides when motor is opened has guaranteed that shutter remains static when opening, and provides shutter again to open required restoring force after shutter closure.This structure has greatly reduced the size of blade drive device, improves shutter stability, guarantees the miniaturization of electronic imaging device.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described shutter fixed head is provided with and the teat that can fasten with jump ring, is also provided with the nut groove that can screw up mutually with described screw on described shutter fixed head.
Further, described teat engages with jump ring after running through successively described lower blade and described blade, and described lower blade be take described teat can do Plane Rotation as axle; Described lower blade is provided with arc chute, and described screw runs through after described blade, through described arc chute and described nut groove, screws up.
The beneficial effect that adopts above-mentioned further scheme is to engage with described jump ring after described teat runs through described blade, described screw screws up with the described nut groove of being located on shutter fixed head after running through blade, dual being like this fixedly installed is firmly fixed on described shutter fixed head described blade, can only rotate and rotate along with described shutter fixed head; Described lower blade is located between described blade and described shutter fixed head, and the described teat of take can be done Plane Rotation as axle, described screw screws up through described arc chute and described nut groove, and such structure setting has guaranteed that described lower blade can carry out Plane Rotation in limited scope.Because described blade and shutter fixed head are fixed, described lower blade can teat be that axle turns an angle, during electric motor starting, by rotated drive shutter fixed head by motor shaft, rotate, thereby described blade and lower blade rotate, because of upper and lower blade rotation angle difference, realize diminishing of taking up space when shutter is opened with closure, thereby realize the miniaturization of whole shutter assembly.
Further, in the edge of described blade one side, be provided with inside groove, the locations of structures of described groove and described boss matches, and described boss is connected to a side of described blade through described groove; The height of described boss is greater than the height of described blade, described lower blade and the stack of described shutter fixed head.
When the beneficial effect that adopts above-mentioned further scheme is described shutter fixed head rotation, described boss has played the effect of stop means, has limited the slewing area of shutter fixed head, blade and lower blade.
The invention has the beneficial effects as follows that the present invention adopts motor to drive, adopt double blade structure, greatly reduced the size of blade drive device, improve shutter stability, guarantee the miniaturization of electronic imaging device.
Accompanying drawing explanation
Fig. 1 is that tradition is for the rotary shutter device structure skeleton view of camera model;
Fig. 2 is that tradition is for the solenoid-driven shutter device structure skeleton view of camera model;
Fig. 3 is the structure skeleton view of a kind of focal plane shutter structure of the present invention;
Fig. 4 is the structure explosive view of a kind of focal plane shutter structure of the present invention;
Fig. 5 is the closure state structure vertical view of a kind of focal plane shutter structure of the present invention;
Fig. 6 is the open mode structure vertical view of a kind of focal plane shutter structure of the present invention;
Fig. 7 is the structure vertical view of the middle blade closure state of a kind of focal plane shutter structure of the present invention;
Fig. 8 is the structure vertical view of the middle blade open mode of a kind of focal plane shutter structure of the present invention;
Fig. 9 is the structure vertical view of the middle lower blade closure state of a kind of focal plane shutter structure of the present invention;
Figure 10 is the structure vertical view of the middle lower blade open mode of a kind of focal plane shutter structure of the present invention.
In accompanying drawing, the list of parts of each label representative is as follows:
1, conventional motors, 2, traditional blade, 3, traditional focal plane, 4, support, 5, housing, 6, electromagnetic block, 7, solenoid valve rocking handle, 8, solenoid valve, the 9, first blade, 10, the second blade, 11, aperture, 12, chute, 13, motor, 131, motor shaft, 14, motor cabinet, 141, boss, 142, through hole, 15, shutter fixed head, 151, teat, 152, nut groove, 16, screw, 17, spring, 18, jump ring, 19, blade, 191, groove, 20, lower blade, 201, arc chute, 21, focal plane.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 3 and Figure 4, a kind of focal plane shutter structure, comprise motor 13, motor cabinet 14, spring 17, shutter fixed head 15, blade 19, lower blade 20, described motor cabinet 14 is fixed on described motor 13, described motor 13 is provided with and stretches out the outer also rotating motor shaft 131 of described motor 13, described motor cabinet 14 is provided with the through hole 142 matching with described motor shaft 131 locations of structures, and described motor shaft 131 can pass described through hole 142; Described shutter fixed head 15 is fixedly connected with described motor shaft 131 one end away from described motor 13, and described motor cabinet 14 is between described shutter fixed head 15 and described motor 13, and described motor shaft 131 rotates and can drive described shutter fixed head 15 to rotate; Described blade 19 overlays on described lower blade 20, and described blade 19 and described lower blade 20 are fixed on the upper surface of shutter fixed head 15 by jump ring 18 and screw 16; Described motor cabinet 14 is provided with for limiting the boss 141 of described blade 19 and described lower blade 20 slewing areas, described spring 17 covers are on described motor shaft 131, one end of described spring 17 is fixed on described motor cabinet 14, and the other end is stuck on described boss 141.
Described shutter fixed head 15 is provided with and the teat 151 that can fasten with jump ring 18, is also provided with the nut groove 152 that can screw up mutually with described screw 16 on described shutter fixed head 15.
Described teat 151 engages with jump ring 18 after running through successively described lower blade 20 and described blade 19, and described lower blade 20 be take described teat 151 can do Plane Rotation as axle; Described lower blade 20 is provided with arc chute 201, and described screw 16 runs through after described blade 19, through described arc chute 201, screws up with described nut groove 152.
Edge in described blade 19 1 sides is provided with inside groove 191, and described groove 191 matches with the locations of structures of described boss 141, and described boss 141 is connected to a side of described blade 19 through described groove 191; The height of described boss 141 is greater than the height of described blade 19, described lower blade 20 and 15 stacks of described shutter fixed head.
As shown in Figure 5, when shutter is in closure state, now motor 13 is in stall state, and spring 17 is compressed, stored energy; Described blade 19 goes to boss 141 places, and lower blade 20 also bumps against with boss 141, and all in extreme position, now shutter is completely closed, blocks focal plane 21, realizes closing of light path.
As shown in Figure 6, when shutter is in open mode, now motor 13 power-off, shutter fixed head 15 turns clockwise under spring 17 drives, and blade 19 is followed shutter fixed head 15 and completed big angle rotary, and lower blade 20 turns to after certain angle, screw 16 is collided with the edge of arc chute, lower blade 20 no longer rotates, thereby realizes the overlapping of two blades, reaches the object that reduces space.Through above-mentioned motion, now shutter is opened completely, exposes focal plane 21, realizes opening of light path.
Preferably, also can remove spring 17, only by shutter gravity, keep light path open mode stable, by motor 13 stalls, keep light path closure state stable.
As shown in Figure 7 and Figure 8, described blade 19 is fixing with shutter fixed head 15, and the two is without degree of freedom, so remain identical rotational angle, angle is larger.
As shown in Figure 9 and Figure 10, there is certain rotational freedom with shutter fixed head 15 in described lower blade 20, thus turn to certain angle spacing after, i.e. no longer rotation.
Preferably, present invention focuses on motor 13 and drive twayblade, different rotation angle, realizes the opening and closing of shutter, and spring 17 resetting structures in above-described embodiment can be realized by magnet.At shutter open and close two limit positions, place two magnet, shutter fixed head 15 uses the carrying magnetic materials such as iron to make, and so just can guarantee that shutter is in the stability of open and close state.When shutter is closed, motor 13 drives shutter fixed head 15 to overcome magnetic field force rotation, when twayblade, encounters 13 power-off of stop means rear motor, and shutter is kept closed under the effect of magnetic field force; When shutter need to be opened, the logical inverse current of motor 13, motor 13 oppositely drives 15 rotations of shutter fixed head, when twayblade, encounters 13 power-off of stop means motor, and shutter remains on open mode under magnetic field force effect.
Preferably, motor 13 can be replaced with electric rotating magnet valve.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a focal plane shutter structure, it is characterized in that, comprise motor (13), motor cabinet (14), spring (17), shutter fixed head (15), blade (19), lower blade (20), described motor cabinet (14) is fixed on described motor (13), described motor (13) is provided with and stretches out the outer also rotating motor shaft (131) of described motor (13), described motor cabinet (14) is provided with the through hole (142) matching with described motor shaft (131) locations of structures, and described motor shaft (131) can pass described through hole (142); Described shutter fixed head (15) is fixedly connected with described motor shaft (131) one end away from described motor (13), described motor cabinet (14) is positioned between described shutter fixed head (15) and described motor (13), and described motor shaft (131) rotates and can drive described shutter fixed head (15) to rotate; Described blade (19) overlays on described lower blade (20), and described blade (19) and described lower blade (20) are fixed on the upper surface of described shutter fixed head (15) by jump ring (18) and screw (16); Described motor cabinet (14) is provided with for limiting the boss (141) of described blade (19) and described lower blade (20) slewing area, described spring (17) cover is on described motor shaft (131), it is upper that one end of described spring (17) is fixed on described motor cabinet (14), and the other end is stuck on described boss (141).
2. a kind of focal plane shutter structure according to claim 1, it is characterized in that, described shutter fixed head (15) is provided with and the teat (151) that can fasten with described jump ring (18), is also provided with the nut groove (152) that can screw up mutually with described screw (16) on described shutter fixed head (15).
3. a kind of focal plane shutter structure according to claim 2, it is characterized in that, described teat (151) engages with jump ring (18) after running through successively described lower blade (20) and described blade (19), and described lower blade (20) be take described teat (151) can do Plane Rotation as axle; Described lower blade (20) is provided with arc chute (201), and described screw (16) runs through after described blade (19), through described arc chute (201) and described nut groove (152), screws up.
4. according to a kind of focal plane shutter structure described in claims 1 to 3 any one, it is characterized in that, edge in described blade (19) one sides is provided with inside groove (191), described groove (191) matches with the locations of structures of described boss (141), and described boss (141) is connected to a side of described blade (19) through described groove (191); The height of described boss (141) is greater than the height of described blade (19), described lower blade (20) and described shutter fixed head (15) stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395383.7A CN104166294A (en) | 2014-08-12 | 2014-08-12 | Focal plane shutter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395383.7A CN104166294A (en) | 2014-08-12 | 2014-08-12 | Focal plane shutter structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104166294A true CN104166294A (en) | 2014-11-26 |
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ID=51910178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410395383.7A Pending CN104166294A (en) | 2014-08-12 | 2014-08-12 | Focal plane shutter structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104166294A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017062418A (en) * | 2015-09-25 | 2017-03-30 | 日本電産コパル株式会社 | Focal plane shutter, imaging apparatus, optical instrument, and electronic apparatus |
| CN106569372A (en) * | 2016-11-14 | 2017-04-19 | 佛山市协亮光电制品有限公司 | Shutter switcher applied to infrared thermal imager technologies |
| CN108535935A (en) * | 2018-05-29 | 2018-09-14 | 深圳柏瑞光电技术有限公司 | A kind of split type screw connection structure and infrared lens shutter |
-
2014
- 2014-08-12 CN CN201410395383.7A patent/CN104166294A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017062418A (en) * | 2015-09-25 | 2017-03-30 | 日本電産コパル株式会社 | Focal plane shutter, imaging apparatus, optical instrument, and electronic apparatus |
| CN106569372A (en) * | 2016-11-14 | 2017-04-19 | 佛山市协亮光电制品有限公司 | Shutter switcher applied to infrared thermal imager technologies |
| CN108535935A (en) * | 2018-05-29 | 2018-09-14 | 深圳柏瑞光电技术有限公司 | A kind of split type screw connection structure and infrared lens shutter |
| CN108535935B (en) * | 2018-05-29 | 2024-02-20 | 深圳柏瑞光电技术有限公司 | Split type threaded connection structure and infrared lens shutter |
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Application publication date: 20141126 |