CN100338525C - Shutter device - Google Patents
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- CN100338525C CN100338525C CNB2003101160226A CN200310116022A CN100338525C CN 100338525 C CN100338525 C CN 100338525C CN B2003101160226 A CNB2003101160226 A CN B2003101160226A CN 200310116022 A CN200310116022 A CN 200310116022A CN 100338525 C CN100338525 C CN 100338525C
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Abstract
Provided is a shutter unit which performs secure shutter operation while deterring shutter blades from bounding in opening/closing operation and is arranged in a small space. This shutter unit has main blades 3 and 5 and subordinate blades 4 and 6 which can rotate and travel in the space formed of a shutter case 1 and a case lid 2 in opening/closing directions; and the main blades 3 and 5 are provided with extension projection parts 3d and 5d and braking members 2g and 1g made of shock-absorbing raw materials are arranged opposite closure-state termination positions of the extension projection parts 3d and 5d separately from their movement traces across slight gaps. When this shutter unit is driven from the opening state to the closure state, the main blades 3 and 5 suddenly stop at their termination positions and when the extension projection parts 3d and 5d are displaced along the optical axis, they abut against the braking members 2g and 1g to be braked, so that the main blades 3 and 5 and subordinate blades 4 and 6 are deterred from bounding.
Description
Technical field
The present invention relates to open and close the structure of using the shutter device of opening for the exposure that allows photography light pass through.
Background technology
In the past, driving the leaf switch of shutter, making in the shutter device of opening open and close of exposure usefulness, and in the blade high-speed rotation (moving) of shutter afterwards, when arriving open position or off-position,, be easy to rebound owing to allowing it stop hastily.The bounce-back of this blade is that variation of exposure takes place, and the reason of phenomenons such as light leak perhaps takes place, and does not wish to take place.Therefore, the various shutter devices that the mechanism that prevents the blade bounce-back is housed have been proposed.
Disclosed curtain shutter in the Te Kaiping 9-5831 communique, the rubber-like buffer unit, the sort buffer parts are heavy curtain narrow slit blade after driving, perhaps preceding heavy curtain narrow slit blade (blade), in beginning exposure actions position, when perhaps arriving the exposure actions end position, be crimped on the above-mentioned blade.Just be crimped on the above-mentioned elastic buffer unit by means of the general, to suppress the narrow slit blade in the bounce-back that drives on the end position at the narrow slit blade of high-speed mobile.
In addition, disclosed electromagnetic driving optical shutter in No. 2627904 patent gazette has with electromagnet and drives its rotation as the drive source of blade, the revolving part of permanent magnet is housed, by above-mentioned revolving part, above-mentioned blade rotation is driven into open position, perhaps off-position.When above-mentioned electromagnet was switched on, above-mentioned blade just was driven in rotation open position.When above-mentioned electromagnet cut off the power supply, above-mentioned blade just was driven in rotation off-position, and at this moment, above-mentioned revolving part just is crimped on and is arranged on the elastic buffer unit that rotates on the terminal location.Above-mentioned revolving part so its rebound on terminal location has reduced, has suppressed the bounce-back of blade owing to be crimped on the above-mentioned elastic buffer unit.
Also have, the disclosed clamping device that rebounds of preventing on real public clear 62-3792 communique, it is the clamping device of the high-speed driving device of a kind of blade that can be applicable to camera and so on, it has the platen of band exposure opening, and is bearing in the shutter open plate and the shutter close plate that can slide on the above-mentioned platen thereon.Above-mentioned shutter open plate and closing plate are used for the exposure opening on the above-mentioned platen of switch, are the actions according to electromagnet, by means of the elastic force of loading spring, the terminal location from side's high-speed driving to the opposing party.When arriving above-mentioned terminal location, be arranged on the shutter open plate, the bonded block of the convex shape on the shutter close plate just be crimped on the elastic buffer plate above, make above-mentioned elastic buffer plate generation elastic deformation.By the elastic deformation of above-mentioned elastic buffer plate, damping force is acted on the shutter open plate, on the shutter close plate, to suppress the bounce-back on the above-mentioned terminal location.
; open disclosed curtain shutter in the flat 9-5831 communique above-mentioned spy; in disclosed electromagnetic driving optical shutter in No. 2627904 patent gazette; because at above-mentioned narrow slit blade; perhaps on the mobile terminal locations of above-mentioned revolving part etc.; all above-mentioned elastic buffer unit is arranged to facing to moving direction; so; on mobile terminal locations; above-mentioned elastic buffer unit and above-mentioned narrow slit blade; perhaps and the relative positional accuracy between the above-mentioned revolving part, the effect that prevents to rebound there is very big influence.Above-mentioned relative positional accuracy, also relevant except relevant with assembly precision with the scale error of the part of each component parts, be difficult to guarantee the precision stipulated, prevent the effect that rebounds conscientiously so just be difficult to expect to have.And, reaching the precision of regulation if guarantee above-mentioned each positional precision, just to raise the cost inevitably.
On the other hand, in the disclosed clamping device that prevents to rebound, above-mentioned elastic buffer unit is from the convex bonded block crimping of top and above-mentioned shutter open plate, shutter close plate on terminal location and combines on the public clear 62-3792 communique of above-mentioned reality.In this case, the relative position relation between above-mentioned elastic buffer unit and above-mentioned shutter open plate, the shutter close plate also has very big influence to the bounce-back effect, so be difficult to expect to reach the effect that rebounds of preventing of regulation equally.
Also have, open in flat 9-5831 communique, above-mentioned No. 2627904 patent gazette, the public clear 62-3792 communique of above-mentioned reality in the disclosed various devices above-mentioned spy, it is relative for above-mentioned elastic buffer unit is arranged to blade, shutter plate parts, just must increase the spaces near the moving direction the terminal location such as blade, this miniaturization for shutter device is very unfavorable.
Summary of the invention
The present invention puts forward for addressing the above problem, its objective is provides a kind of shutter device, this shutter device can suppress the bounce-back of blade, obtains infallible switch motion, and with simple structure decrease for arranging the necessary space of blade.
The shutter device that a first aspect of the present invention is put down in writing, it is the shutter device of band weakening, it has: blade; And the material that absorbs impact usefulness, it is near the closed terminal position of motion track or near the open terminal, when shutter is static, have outside the motion track that is arranged in above-mentioned blade with gap with respect to above-mentioned blade, and be arranged in owing in the moving process of above-mentioned blade or the distortion that has just stopped when mobile make above-mentioned blade on the direction of roughly vertical displacement with the moving direction of this blade, when the above-mentioned distortion of above-mentioned blade and above-mentioned blade crimping.By means of the displacement of above-mentioned blade, above-mentioned blade is crimped on the material of above-mentioned absorption impact, to suppress the bounce-back of blade on terminal location.
The shutter device that a third aspect of the present invention is put down in writing, it is on the basis of first aspect present invention, it has leader, in the closed terminal position or the above-mentioned gap of open terminal of this leader when mobile the stopping of above-mentioned blade, above-mentioned blade is directed to absorb to impact uses material.Temporarily stop at above-mentioned blade, perhaps move at the end, the blade that is guided by the guide sections branch is crimped on the above-mentioned absorption piece, to suppress its bounce-back.
Description of drawings
Fig. 1 is the stereographic map after the shutter device of first embodiment of the invention decomposes;
Fig. 2 sees that from light incident side the case cover of the shutter device among above-mentioned Fig. 1 is laid down the planimetric map of state, has represented the major and minor blade under the shutter close state among the figure;
Fig. 3 sees that from light incident side the case cover of the shutter device among above-mentioned Fig. 1 is laid down the planimetric map of state, has only represented the primary blades under the shutter open mode among the figure;
Fig. 4 is the A-A sectional drawing among above-mentioned Fig. 1, represents the shutter close state of above-mentioned shutter device;
Fig. 5 is the B-B sectional drawing among above-mentioned Fig. 1, represents the shutter close state of above-mentioned shutter device;
Fig. 6 is the A-A sectional drawing among above-mentioned Fig. 1, but, be when arriving the shutter close position, represent the mode chart of each blade displacement state, and the size of optical axis O direction has been amplified;
Fig. 7 is the stereographic map after the shutter device of second embodiment of the invention decomposes;
Fig. 8 sees from light incident side, the planimetric map of the shutter device closed condition of above-mentioned Fig. 7;
Fig. 9 is the C-C sectional drawing among above-mentioned Fig. 8;
Figure 10 sees from light incident side, the planimetric map of the shutter device open mode of above-mentioned Fig. 7;
Figure 11 is the D-D sectional drawing of above-mentioned Figure 10.
Embodiment
Below, with reference to the description of drawings embodiments of the invention.
Fig. 1 is the stereographic map after the shutter device of first embodiment of the invention decomposes; Fig. 2 sees that from light incident side the case cover of above-mentioned shutter device is laid down the planimetric map of state, has represented the major and minor blade under the shutter close state among the figure; Fig. 3 sees that from light incident side the case cover of above-mentioned shutter device is laid down the planimetric map of state, has only represented the primary blades under the shutter open mode among the figure; Fig. 4 is the A-A sectional drawing among above-mentioned Fig. 1, represents the shutter close state of above-mentioned shutter device; Fig. 5 is the B-B sectional drawing among above-mentioned Fig. 1, represents the shutter close state of above-mentioned shutter device; Fig. 6 is the A-A sectional drawing among above-mentioned Fig. 1, but, be when arriving the shutter close position, represent the mode chart of each blade displacement state, and the size of optical axis O direction has been amplified.
In addition, in the following description, see through shutter device by the optical axis of photograph object beam, represent with O.In addition, above-mentioned by the upside of the light incident side of photograph object beam, with the downside of exiting side as shutter device as shutter device.In addition, the rotation direction of each parts uses the rotation direction of seeing from above-mentioned upside to represent.
The shutter device of present embodiment is the shutter device that can be applicable to camera etc., as shown in Figure 1, mainly is made of following various parts: fixing not the shutter housing 1 and the case lid 2 of the support unit on the picture frame of expression in the drawings; With the opening portion collaborative work of exposure usefulness, but four blades (sector) of switch, i.e. two groups of primary blades 3, back blades 4 and primary blades 5, back blades 6; And shutter activation lever 7 with drive pin 7a.
Above-mentioned shutter housing 1 has following each several part: with the upper surface that optical axis O intersects vertically, promptly form the inner surface portion 1k in the space of accommodating blade; Be arranged on the above-mentioned inner surface portion 1k, for allowing the opening portion 1a of the exposure usefulness passed through by the photograph object beam; The inserting hole 1i of the drive pin 7a of shutter activation lever 7; And crimping end face 1m.In addition, also be provided with following parts: be arranged on the inner surface portion 1k, support above-mentioned each blade, fulcrum post 1b, 1c, 1d, 1f that it can freely be rotated; The same vibration compensator 1g of fixed and arranged on inner surface portion 1k; And inside surface one side that is arranged in inner surface portion 1k, supporting shutter activation lever 7, the lever supporting pin 1j that it can freely be rotated.
In addition, above-mentioned fulcrum post 1d has the step part 1e that uses along the rotation hole 5b of optical axis O direction supporting primary blades 5 on every side.
In addition, above-mentioned vibration compensator 1g absorbs the material that impacts usefulness, for example, be with SORBOTHANE (rubber that Sorbothane company produces), or the vibration-proof rubber of the rubber of producing with interior outer rubber Co., Ltd. " how breathe out nanotesla " and so on makes, and can absorb the parts of kinetic energy, and it has planar section 1g1 and the chamfered portion 1g2 vertical with optical axis O, be crimped on the shutter housing 1, fix with modes such as press fits.The planar section 1g1 of vibration compensator 1g under the said fixing state, near the closed terminal of the rotation motion track of the extension projection 5d of aftermentioned primary blades 5, be arranged to beyond this motion track, have only very a little bit smaller gap (seeing Fig. 4,5) on the lower position vertical with the blade moving direction.
Above-mentioned case lid 2 has following each several part on the lower surface vertical with optical axis O (being upper surface) in Fig. 1: the inner surface portion 2k that forms the blade receiving space; Be arranged on the above-mentioned inner surface portion 2k, be the opening portion 2a that uses by quilt photograph object beam; Embed above-mentioned fulcrum post 1b, 1c, 1d, axis hole 2b, the 2c of 1f, 2d, 2f, in addition, also be provided with the vibration compensator 2g that is fixed on the above-mentioned inner surface portion 1k.This case lid 2 is assembled on the crimping end face 1m that is crimped on above-mentioned shutter housing 1.
In addition, above-mentioned axis hole 2b is arranged on around the rotation hole 3b of primary blades 3, along the axis hole on the supporting protuberance 2e of optical axis direction.
In addition, above-mentioned vibration compensator 2g is the same with vibration compensator 1g, it is the material that impacts with absorbing, be the parts of the absorption kinetic energy made of vibration-proof rubber, it has the smooth circumference dip plane 2g2's of bight band, the circular flat part 2g1 vertical with optical axis O is fixed on methods such as crimping, press fits among the mounting hole 2h of case lid 2.Be at the planar section 2g1 of the vibration compensator 2g under the above-mentioned installment state near the closed terminal of rotary motion trace of extension projection 3d of aftermentioned primary blades 3, be arranged to beyond this track, have only very a little bit smaller gap (seeing Fig. 4,5) on the top position vertical with the blade moving direction.
Above-mentioned primary blades 3 is provided with following part: opening shield portions 3a; Be entrenched on the fulcrum post 1b rotating support bore portion 3b that can freely rotate; Drive pin 7a embeds the slotted hole 3c that rotating drive is wherein used; Be positioned at above-mentioned opening shield portions more on the position of foreign side, the extension projection 3d that extends out towards the sealing rotation direction.In addition, on back blades 4, be provided with: opening shield portions 4a; Be entrenched in fulcrum post 1c and go up the rotating support bore portion 4b that can freely rotate; And drive pin 7a embeds the slotted hole 4c that rotating drive is wherein used.
On the other hand, on above-mentioned primary blades 5, be provided with following part: opening shield portions 5a; Be entrenched on the fulcrum post 1d rotating support bore portion 5b that can freely rotate; Drive pin 7a embeds the slotted hole 5c that rotating drive is wherein used; Be positioned at above-mentioned opening shield portions more on the position of foreign side, the extension projection 5d that extends out towards the sealing rotation direction.In addition, on back blades 6, be provided with: opening shield portions 6a; Be entrenched in fulcrum post 1f and go up the rotating support bore portion 6b that can freely rotate; And drive pin 7a embeds the slotted hole 6c that rotating drive is wherein used.
Above-mentioned shutter activation lever 7 is bearing on the lever supporting pin 1j of shutter housing 1, can freely rotate, and solenoid and the activation lever retracting spring used by the known driving shutter of not representing among the figure drive its rotation, to drive the switch of blade.That is, when above-mentioned solenoid is in on-state (attraction state), by drive pin 7a, drives major and minor blade 3,4,5,6 and open by shutter activation lever 7.When above-mentioned solenoid is in off-state, then utilize the elastic force of the retracting spring of solenoid, drive above-mentioned each blade by shutter activation lever 7 to closing direction.
Shown in Fig. 2,3, above-mentioned four major and minor blades 3,4,5,6, in by shutter housing 1 and case lid 2 formed inner spaces, from opening portion 1a one side (downside), under the state that the order according to blade 6,5,4,3 is piled up, be bearing on each fulcrum post 1f, 1d as fulcrum, 1b, the 1c, can carry out switch and rotate.In whole slewing areas of this position of the switch, overlapping by extension projection 3d, the 5d of primary blades 3,5 keeps the overlapping relation up and down on the optical axis O direction.
In addition, (see figure 2) when primary blades 3,5 is in shutter close position P3A, P5A, extension projection 3d, the 5d of primary blades 3,5 are in respectively on the direction of optical axis O facing to the planar section 2g1 of vibration compensator 2g, 3g, the position of 3g1.The gap of its optical axis O direction, under the static switch mobile status that does not have above-mentioned displacement owing to rebound, be that primary blades 3,5 is can rotate there not being resistance the time, very little suitable gap (seeing Fig. 2,4,5), and, because primary blades 3,5 or back blades 4,6 produce displacement because of bounce-back when arriving the terminal location of shutter close, extension projection 3d, 5d and vibration compensator 2g, the such gap (Fig. 6) of 3g crimping have just been become.In addition, above-mentioned displacement comprises shown in Figure 6 the sort of owing to the loosening displacement that causes with because the displacement that distortion causes, and wherein, because the displacement composition of moving direction and vertical direction, makes extension projection 3d, 5d and vibration compensator 2g, 3g crimping.
In addition, (see figure 3) when primary blades 3,5 is shown in an open position P3C, P5C from shutter half-open position P3B, P5B to shutter, primary blades 3,5 and back blades 4,6, be under the state between the inner surface portion 2k of the inner surface portion 1k that is clipped in shutter housing 1 and case lid 2, be arranged to respectively have and have no that resistance ground rotates, above-mentioned very little suitable gap.
Below, the switch motion of shutter in the shutter device of the present embodiment with above structure is described.
At first, under the shutter close state, as shown in Figure 2, and primary blades 3,5 P3A in the closed position, P5A, back blades 4,6 is in the closed position too, opening portion 1a complete closed.Position around rotating support bore portion 3b, the 5b of primary blades 3,5 on the optical axis direction, be subjected to the restriction of projection 2e and step part 1e, the upside of extension projection 3d, the 5d of primary blades 3,5, the position of downside, be subjected to the restriction of the planar section 1g1 of the planar section 2g1 of vibration compensator 2g and vibration compensator 1g, and then, the other parts of primary blades 3,5, also have back blades 4,6, then keeping by the state of the inner surface portion 1k clamping of the inner surface portion 2k of case lid 2 and shutter housing 1.Under this closed condition, opening portion 1a is covered by the state that opening shield portions 3a, 4a, 5a, 6a are piled up, and is keeping neither leak light on optical axis O direction, again the very little gap that can suitably move.
Rotate towards clockwise direction when driving shutter activation lever 7, when the opening action of shutter begins, primary blades 3, back blades 4 and primary blades 5, back blades 6 rotate (inhour rotation to opening direction respectively, perhaps clockwise rotate), as shown in Figure 3, primary blades 3,5 turns to open position P3C, P5C, and same, back blades 4,6 also turns to open position respectively.
After shutter is opened, drive shutter activation lever 7 and rotate towards counter-clockwise direction, each blade just rotates towards the direction of closing, and primary blades 3,5 arrives the terminal location of closing direction, i.e. off-position P3A, P5A.Simultaneously, back blades 4,6 also arrives off-position respectively.When primary blades 3,5 arrived above-mentioned terminal location (mobile end), shutter activation lever 7 just stopped sharp. Primary blades 3,5 and back blades 4,6 are owing at above-mentioned kinetic energy that will the anxious stopping time, promptly, produce bounce-back towards all direction displacements that comprise optical axis O direction.Fig. 6 represents the displacement state of each blade this moment.In addition, above-mentioned displacement comprises because the displacement (the plane deflection of blade itself) of blade elastic deformation and owing to the displacement that takes place of becoming flexible of each telescoping part.
When above-mentioned blade rebounds, the extension projection 3d of primary blades 3,5, the fore-end of 5d will be towards the directions vertical with moving direction, i.e. the direction displacement of optical axis O, be crimped on the planar section 1g1 of the planar section 2g1 of vibration compensator 2g and vibration compensator 1g.Said front part has absorbed when this crimping, and in other words, the kinetic energy when this collision, impact promptly, has consumed primary blades 3,5 kinetic energy that had, and accepts to prevent the strength of vibration.As a result, suppressed the bounce-back action of primary blades 3,5.Simultaneously, the vibration that overlaps the back blades 4,6 on the primary blades 3,5 has also been prevented by primary blades 3,5, has suppressed its bounce-back action equally.
During above-mentioned shutter close, in each blade incoming terminal position, if in a single day the situation of light leak owing to produce gap or the like between the blade of closing, will take place in each blade bounce-back,, when adopting the shutter device of above said present embodiment, as mentioned above, owing to the bounce-back when the incoming terminal position has been suppressed, so situations such as above-mentioned light leak can not take place, can obtain good shutter release action.
In addition, even before above-mentioned blade soon arrives above-mentioned terminal location, the fore-end of extension projection 3d, the 5d of primary blades 3,5 also has the possibility on the planar section 1g1 of the planar section 2g1 that is crimped on vibration compensator 2g and vibration compensator 1g.In this case, owing to the translational speed when terminal has reduced, so can influence opening the time of shutter hardly, the bounce-back when but having suppressed to stop.
Shutter device according to above-described present embodiment, with respect to the usual shutter device that does not prevent rebound function, only adopted on the inner surface portion of shutter housing 1 and shutter cover 2, the so simple structure of vibration compensator 1g, 2g that additional arrangement is relative with the extension projection of primary blades, the bounce-back of blade when just having suppressed shutter close expeditiously, and the time of opening to shutter exerts an influence hardly, can obtain good shutter release action, can make the shutter high speed, and can also provide the space that occupies very little shutter device.
Below, with reference to the shutter device of Fig. 7～11 explanation second embodiment of the present invention.
Fig. 7 is the stereographic map after the shutter device of second embodiment of the invention decomposes; Fig. 8 sees the figure of above-mentioned shutter device closed condition from light incident side (upside of Fig. 7); Fig. 9 is the C-C sectional drawing among Fig. 8; Figure 10 sees the figure of above-mentioned shutter device open mode from light incident side (upside of Fig. 7); Figure 11 is the D-D sectional drawing among Figure 10.
The shutter device of present embodiment is the shutter device that can be applicable to camera etc.As shown in Figure 7, it mainly has following parts: the shutter housing 11 that is fixed on the support unit on the picture frame; Be in overlapping and be bearing under the state in the above-mentioned shutter housing 11 two blades 12,13 that can freely rotate; For limiting the case lid 14 that above-mentioned blade 12,13 moves to optical axis O direction; Be bearing in inside surface one side (top of Fig. 7) of above-mentioned shutter housing 11, can freely rotate, have the shutter activation lever 15 of vane drive pin 15a.
The inner peripheral surface part 11b that has arranged blade 12,13 is arranged in above-mentioned shutter housing 11, with the face that intersects vertically with optical axis O, be inner surface portion 11p, on this inner surface portion 11p, be provided with following each several part: passed through the opening portion 11a of exposure usefulness by the photograph object beam for allowing; The driving pin-and-hole 11c of the slotted hole shape that the vane drive pin 15a of shutter activation lever 15 is passed; Fulcrum post 11d, 11e that supporting blade 12,13 rotates; The leader of the distortion of guiding blade 12, i.e. two dip plane 11m, 11n.In addition, be separately fixed at two vibration compensator 11k, 11i among mounting hole 11j, the 11h on the inner surface portion 11p in addition.
Above-mentioned dip plane 11m is on inner surface portion 11p, near the convex dip plane that forms on the position of inner peripheral surface part 11b, is to face toward the face that intersects vertically with optical axis O, towards the dip plane that the open rotation direction rising of blade 12 is tilted.And when the convex end of blade 12 12g arrived shutter open position, the front end of above-mentioned convex end was crimped on the 11m of this dip plane.
Above-mentioned dip plane 11n is on inner surface portion 11p, near the convex dip plane that forms on the position of inner peripheral surface part 11b, is to face toward the face that intersects vertically with optical axis O, towards the dip plane that the sealing rotation direction rising of blade 12 is tilted.And when the extension projection 12f of blade 12 arrived the shutter close position, the front end of above-mentioned extension projection was crimped on the 11n of this dip plane.
Above-mentioned vibration compensator 11i, 11k are the materials that impacts with absorbing, for example, SORBOTHANE (rubber that Sorbothane company produces), perhaps the vibration-proof rubber of rubber of being produced by interior outer rubber Co., Ltd. " how breathe out nanotesla " and so on is made, can absorb the parts of kinetic energy, it has the smooth circumference dip plane of bight band, and the circular flat part vertical with optical axis O is fixedly mounted among mounting hole 11h, the 11j of shutter housing 11 with methods such as crimping, press fit, riveted joints.
The circular flat part of above-mentioned vibration compensator 11i, near the convex end 13g near blade 13 described later rotates the open terminal of motion track, on direction outside this track lower position vertical with the blade moving direction, blade 13 is arranged to have the gap (Figure 11) that can only move a little.
The circular flat part of above-mentioned vibration compensator 11k, near closed terminal near the motion track of the extension projection 13f center of rotation of primary blades 13 described later, on direction outside this track lower position vertical with the blade moving direction, blade 13 is arranged to have the gap (Fig. 9) that can only move a little.
Above-mentioned case lid 14 is mounted to its excircle crowning part 14b is embedded among the inner peripheral surface part 11b of above-mentioned shutter housing 11, it has the inner surface portion 14p that intersects vertically with optical axis O, is provided with following each several part on this inner surface portion 14p: the opening portion 14a that is passed through by the photograph object beam; Pinhole 14d, 14e that above-mentioned fulcrum post 11d, 11e are passed; The leader of the distortion of guiding blade 13, i.e. two dip plane 14m, 14n.In addition, mounting hole 14h, 14j on inner surface portion 14p have the absorption that is fixed on above it respectively and impact the material (kinetic energy absorption piece) of usefulness, i.e. two vibration compensator 14i, 14k.
Above-mentioned dip plane 14m is outside near the position the circumferential protrusion face portion 14b, and the dip plane of the convex that forms on inner surface portion 14p is facing to the face that intersects vertically with optical axis O, towards the raise dip plane of inclination of the open rotation direction of blade 13.When the convex end of blade 13 13g arrived the shutter release position, the front end of this end just was crimped on the 14m of this dip plane.
Above-mentioned dip plane 14n is outside near the position the circumferential protrusion face portion 14b, and the dip plane of the convex that forms on inner surface portion 14p is facing to the face that intersects vertically with optical axis O, closes rotation direction the dip plane of inclination that raises towards blade 13.When the extension projection 13f of blade 13 arrived the shutter close position, the front end of this extension projection just was crimped on the 14n of this dip plane.
Above-mentioned vibration compensator 14i, 14k absorb the material that impacts usefulness, for example, be with SORBOTHANE (rubber that Sorbothane company produces), perhaps the vibration-proof rubber of rubber of producing with interior outer rubber Co., Ltd. " how breathe out nanotesla " and so on is made, it has the smooth circumference dip plane of bight band, the circular flat part vertical with optical axis O is fixedly mounted among mounting hole 14h, the 14j of case lid 14 with methods such as crimping, press fit, riveted joints.
The circular flat part of above-mentioned vibration compensator 14i, near open terminal near the rotation motion track of the center of rotation of the convex end 12g of blade 12 described later, on direction outside this motion track top position vertical with the blade moving direction, blade 12 is arranged to only have the gap (Figure 11) that can move a little.
The circular flat part of above-mentioned vibration compensator 14k, near closed terminal near the rotation motion track of the extension projection 12f of blade 12 described later, on direction outside this motion track top position vertical with the blade moving direction, blade 12 is arranged to only have the gap (Fig. 9) that can move a little.
On above-mentioned blade 12,13, have the opening shield portions of the opening 11a that is used to block on the middle body respectively, on one end thereof, be respectively equipped with: rotational axis hole 12a, 13a; Embed driving pin-and-hole 12b, the 13b of the slotted hole shape of drive pin 15a respectively; Respectively opening shield portions foreign side locational more, the extension projection 12f, the 13f that extend out to the sealing rotation direction; And respectively at convex end 12g, the 13g of the back side of opening shield portions one side.
Above-mentioned shutter activation lever 15 drives blade 12,13 switches by the not solenoid of the known shutter driving usefulness of expression and its rotation of activation lever retracting spring driving among the figure by drive pin 15a.That is,, utilize the elastic force of the retracting spring of solenoid, drive shutter activation lever 15, make blade 12,13 turn to off-position to closing direction by means of the outage of above-mentioned solenoid.When above-mentioned solenoid was in "on" position (attraction state), shutter activation lever 15 was driven to the direction of opening and rotates, and makes blade 12,13 turn to open position.
As shown in figure 11, above-mentioned two blades 12,13 with overlapping state arrangement in the formed inner space of inner surface portion 11p, 14p by shutter housing 11 and case lid 14, blade 12 is in opening portion 11a one side, blade 13 is in opening portion 14a one side, and rotates with each their switch of fulcrum post 11d, 11e supporting.In the scope that its whole switches rotate,, make blade 12,13 on optical axis O direction, keep overlap condition up and down by means of extending the overlapping of projection 12f, 13f.
As shown in Figure 8, when blade 12,13 was in shutter close position P12A, P13A (terminal location), the front end of extension projection 12f, the 13f of blade just was crimped on dip plane 11n or the 14n, perhaps was in the state before of crimping soon.And, when being in the state that is crimped on the above-mentioned dip plane, the planar section of vibration compensator 14k, the perhaps planar section of 11k, on optical axis O direction, be positioned at and the extension projection 12f of blade 12,13, the top position that 13f is relative, or on the lower position (outside the motion track), some gaps that only can move.In this state, when above-mentioned blade during further to the sealing direction displacement that intersects vertically with optical axis O, above-mentioned extension projection 12f, 13f just slide on above-mentioned dip plane, its fore-end moves to optical axis O direction, be crimped on the planar section of vibration compensator 14k, perhaps on the planar section of 11k.
On the other hand, as shown in figure 11, when blade 12,13 was in shutter open position P12C, P13C (terminal location), the front end of convex end 12g, the 13g of blade just was crimped on dip plane 11m or the 14m, perhaps, be in the state before of crimping soon.And, when being in the state that is crimped on the above-mentioned dip plane, the planar section of vibration compensator 14i, the perhaps planar section of 11i, near near rotating support pin one side of convex end 12g, the 13g of blade 12,13, relatively and the top position of optical axis O direction, or on the lower position (outside the motion track), some gaps that only can move.In this state, when above-mentioned blade further to optical axis O intersect vertically open the direction displacement time, above-mentioned convex end 12g, 13g just slide on above-mentioned dip plane, its fore-end moves to optical axis O direction, be crimped on the planar section of vibration compensator 14i, perhaps on the planar section of vibration compensator 11i.
Below, the shutter release action of the shutter device of the present embodiment with above structure is described.
At first, under the shutter close state, as shown in Figure 8, blade 12,13 P12A in the closed position, P13A, opening portion 11a complete closed.Blade 12,13 is in by under the state of the inner surface portion 11p clamping of the inner surface portion 14p of case lid 14 and shutter housing 11, is keeping neither leak light, again the very little gap that can suitably move.
Then, rotate towards clockwise direction when driving shutter activation lever 15, when the opening action of shutter began, blade 12,13 just rotated (inhour is rotated, and perhaps clockwise rotates) to opening direction respectively.Then, when open position P12C, the P13C (Mobile Termination) that arrive as shown in figure 10, because shutter activation lever 15 stops rapidly, blade 12,13 kinetic energy therefore the time, will be from the terminal location of open position P12C, P13C further to the direction displacement (deflection of opening, the plane of blade itself is crooked, promptly so-called deflection deformation).Then, above-mentioned convex end 12g, 13g just slide on dip plane 11m, 14m, upward or the below move.Because this moving, the end of the close fulcrum post of convex end 12g, 13g just is crimped on respectively on the planar section of vibration compensator 14i or 11i, is absorbed the kinetic energy of blade 12,13 respectively by vibration compensator 14i or 11i.Therefore, the displacement of blade has reduced, and then, just stops under the repressed state of bounce-back.That is, in case the opening 11a that opens does not just change to closing side, blade 12,13 stops on open position P12C, the P13C fully.
Then, as shown in figure 10, rotate towards counter-clockwise direction from the shutter open mode when driving shutter activation lever 15, when the closing motion of shutter began, blade 12,13 just rotated (clockwise rotate, perhaps inhour is rotated) to closing direction respectively.Then, when off-position P12A, the P13A (Mobile Termination) that arrive as shown in Figure 8, because shutter activation lever 15 stops rapidly, blade 12,13 is because the kinetic energy of this moment, will be from the terminal location of off-position P12A, P13A further to the direction displacement (deflection of closing, the plane of blade itself is crooked, promptly so-called deflection deformation).Then, above-mentioned extension projection 12f, 13f just slide on dip plane 11n, 14n, upward or the below move.Because this moving extended projection 12f, 13f and just is crimped on respectively on the planar section of vibration compensator 14k or 11k, absorbed the kinetic energy of blade 12,13 by vibration compensator 14k or 11k.Therefore, the displacement of blade has reduced, and then, just stops under the repressed state of the bounce-back of blade.That is, can be, and between blade, produce the gap owing to the bounce-back of blade, phenomenons such as light leak take place at the opening portion 11a that has closed, blade 12,13 stops on off-position P12A, the P13A fully.
As mentioned above, shutter device according to present embodiment, with respect to the common shutter device that does not prevent rebound function, only adopted at shutter housing 11, the dip plane 11n that becomes one with it is set on inner surface portion of case lid 14,11m and dip plane 14n, 14m, and additional arrangement with above-mentioned dip plane near the extension projection vibration compensator 11i relative of blade with the convex end, 11k, 14i, the so simple structure of 14k, just suppressed the bounce-back of blade when shutter opens and closes expeditiously, and the time of opening to shutter exerts an influence hardly, can obtain good shutter release action, can make the shutter high speed, and can also provide the space that occupies very little shutter device.
In addition, though the structure of the shutter device among the above-mentioned various embodiment is will be at the end moving of blades such as shutter open position or off-position, the bounce-back of inhibition blade, but, be not limited in this, when blade temporarily stops, for example, when the half-open position of shutter, on the upper and lower position that the extension protuberance with respect to blade grades, arrange above-mentioned vibration compensator and/or above-mentioned dip plane, the bounce-back in the time of also suppressing temporarily to stop.
In addition, if in the movement locus that re-uses outside the present invention in the past, arrange this existing technology of parts that absorbs impact, then with perfectly safe at blade.
According to the present invention, suppressed the bounce-back of blade when switch motion, provide a kind of simple in structure, can obtain reliable shutter action, be the needed space of deployment mechanism shutter device seldom.
Claims (4)
1. shutter device, it is the shutter device of band weakening, it has:
Blade; And
Absorb the material that impacts usefulness, it is near the closed terminal position of motion track or near the open terminal, when shutter is static, have outside the motion track that is arranged in above-mentioned blade with gap with respect to above-mentioned blade, and be arranged in owing in the moving process of above-mentioned blade or the distortion that has just stopped when mobile make above-mentioned blade on the direction of roughly vertical displacement with the direction of motion of this blade, when the above-mentioned distortion of above-mentioned blade and above-mentioned blade crimping.
2. shutter device as claimed in claim 1 is characterized in that, it is the lens shutter device.
3. shutter device as claimed in claim 1 is characterized in that it has
In leader, this leader closed terminal position or the above-mentioned gap of open terminal when mobile the stopping of above-mentioned blade, above-mentioned blade is directed to absorb to impact uses material.
4. shutter device as claimed in claim 3 is characterized in that, it is the lens shutter device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002382363A JP2004212662A (en) | 2002-12-27 | 2002-12-27 | Shutter unit |
| JP382363/2002 | 2002-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1512257A CN1512257A (en) | 2004-07-14 |
| CN100338525C true CN100338525C (en) | 2007-09-19 |
Family
ID=32817947
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101160226A Expired - Fee Related CN100338525C (en) | 2002-12-27 | 2003-12-29 | Shutter device |
| CN 200320131584 Expired - Fee Related CN2702339Y (en) | 2002-12-27 | 2003-12-29 | Shutter apparatus |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320131584 Expired - Fee Related CN2702339Y (en) | 2002-12-27 | 2003-12-29 | Shutter apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004212662A (en) |
| CN (2) | CN100338525C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019768A (en) * | 2015-03-27 | 2016-10-12 | 精工精密株式会社 | Blade drive device and optical apparatus |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4625729B2 (en) * | 2005-07-06 | 2011-02-02 | 日本精密測器株式会社 | Aperture device |
| JP4628387B2 (en) * | 2006-03-31 | 2011-02-09 | 日本電産コパル株式会社 | Focal plane shutter for camera |
| JP2010527030A (en) * | 2007-05-07 | 2010-08-05 | フレクストロニクス エーピー，リミテッド ライアビリティ カンパニー | Compact camera shutter module and manufacturing method thereof |
| CN102073192B (en) * | 2009-11-23 | 2015-09-09 | Lg伊诺特有限公司 | Shutter device |
| KR101177185B1 (en) * | 2010-02-22 | 2012-08-24 | 엘지이노텍 주식회사 | Camera shutter device |
| KR101874436B1 (en) * | 2011-06-01 | 2018-07-05 | 마이크로엑츄에이터(주) | Subminiature iris apparatus |
| CN110603486B (en) * | 2017-05-09 | 2022-05-03 | 深圳市大疆创新科技有限公司 | Light amount adjustment device, imaging system, and moving object |
| CN113037977B (en) * | 2021-03-12 | 2023-04-18 | 新思考电机有限公司 | Shutter driving device, shutter, imaging device, and electronic component |
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| JP2002090801A (en) * | 2000-09-14 | 2002-03-27 | Nisca Corp | Light quantity controller |
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- 2002-12-27 JP JP2002382363A patent/JP2004212662A/en active Pending
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- 2003-12-29 CN CN 200320131584 patent/CN2702339Y/en not_active Expired - Fee Related
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| JP2627904B2 (en) * | 1987-09-29 | 1997-07-09 | 京セラ株式会社 | Electromagnetic drive shutter |
| JPH08313969A (en) * | 1995-05-23 | 1996-11-29 | Olympus Optical Co Ltd | Light shielding device |
| JPH095831A (en) * | 1995-06-15 | 1997-01-10 | Nikon Corp | Focal plane shutter |
| US6099171A (en) * | 1997-10-09 | 2000-08-08 | Olympus Optical Co., Ltd. | Lens-shutter device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019768A (en) * | 2015-03-27 | 2016-10-12 | 精工精密株式会社 | Blade drive device and optical apparatus |
| CN106019768B (en) * | 2015-03-27 | 2019-11-08 | 精工精密株式会社 | Blade driving apparatus and optical device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2702339Y (en) | 2005-05-25 |
| JP2004212662A (en) | 2004-07-29 |
| CN1512257A (en) | 2004-07-14 |
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