WO2017119278A1 - Dispositif d'essuyage - Google Patents

Dispositif d'essuyage Download PDF

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Publication number
WO2017119278A1
WO2017119278A1 PCT/JP2016/087869 JP2016087869W WO2017119278A1 WO 2017119278 A1 WO2017119278 A1 WO 2017119278A1 JP 2016087869 W JP2016087869 W JP 2016087869W WO 2017119278 A1 WO2017119278 A1 WO 2017119278A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
wiping
follower member
follower
optical surface
Prior art date
Application number
PCT/JP2016/087869
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English (en)
Japanese (ja)
Inventor
成憲 清末
土屋　信介
Original Assignee
コニカミノルタ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Priority to JP2017560086A priority Critical patent/JPWO2017119278A1/ja
Publication of WO2017119278A1 publication Critical patent/WO2017119278A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories

Definitions

  • the present invention relates to a wiping device suitably used for a surveillance camera, for example.
  • Some surveillance cameras installed outdoors are housed in a dedicated housing to protect the camera from rain, snow, etc., and a cylindrical barrel containing an optical system such as a lens protrudes from the housing. is there.
  • a protective glass for protecting the lens is disposed at the tip of the lens barrel, and a desired image can be taken through the protective glass and the lens.
  • a wiper device is provided to remove raindrops attached to the protective glass, and the wiper device is operated as necessary so that a clear surveillance image can be secured. Yes.
  • Patent Document 2 a slide arm that is slidable in the longitudinal direction is attached to the rotation arm, and the slide arm is attached to these by sliding the slide arm according to the reciprocating rotation of the rotation arm.
  • a wiper device is disclosed that can wipe a circular glass surface with a wiper blade while suppressing unwiping.
  • such a wiper device has a problem that the surveillance camera is increased in size, the configuration is complicated, and the number of parts is increased.
  • Patent Document 3 discloses a cleaning instrument that cleans a circular window for pipe confirmation, although it is not used for a surveillance camera.
  • a brush is disposed so as to extend in three directions along the window surface from a rotation shaft provided at the center of the circular window, and the brush is slid onto the surface of the circular window by rotating the rotation shaft. It is moved so that it can be cleaned up to the periphery of the circular window.
  • a cleaning tool is diverted to a monitoring camera, since it has a rotation axis in the vicinity of the optical axis, the main field of view of the monitoring camera is obstructed and there is a fundamental problem that the monitoring function is greatly impaired.
  • JP 2004-61737 A Japanese Patent Laid-Open No. 05-145814 JP 2010-5503 Gazette Japanese Patent Laid-Open No. 05-68191
  • Patent Document 4 discloses a wiper device that eliminates as much as possible an unwiped area by swinging a swing arm provided with a wiper blade at a minimum angle while rotating a circular protective glass. It is disclosed. According to the wiper device of Patent Literature 4, the monitoring device can be reduced in size as compared with the configuration of Patent Literature 2, but a mechanism for rotating the protective glass is required. In such a case, since the protective glass constitutes a part of the optical system together with the lens, it is necessary to precisely rotate without tilting with respect to the plane orthogonal to the optical axis so as not to cause blurring or distortion of the captured image. Providing a highly accurate rotation mechanism increases the cost and may increase the size of the monitoring device.
  • the present invention has been made in view of the above-described problems, and aims to provide a wiping device capable of performing efficient wiping while suppressing wiping remaining on the optical surface even though the size is small and the number of parts is small. To do.
  • the second follower member slides on the optical surface while the wiping member is deformed, and further transmits torque from the slid wiping member to the second follower member, so that the second follower member is in the first phase.
  • the wiping member slides on the optical surface while being deformed, and further transmits torque from the slid wiping member to the first follower member, so that the first follower member has the second phase.
  • To the first phase whereby the wiping member moves from the periphery of the other side of the optical surface to the periphery of the one side.
  • the present invention it is possible to provide a wiping device capable of performing efficient wiping while suppressing the remaining wiping of the optical surface in spite of a small size and a small number of parts.
  • FIG. 2 is an exploded view of a monitoring camera 100.
  • FIG. It is a perspective view which decomposes
  • FIG. 3 is an exploded perspective view showing a main part of a wiper mechanism 110. It is the figure which looked at the glass flat plate and the wiper mechanism 110 in the optical axis direction. In the modification, it is the figure which looked at the glass flat plate 108 and the wiper mechanism 110 in the optical axis direction. In another modification, it is the figure which looked at the glass flat plate 108 and the wiper mechanism 110 in the optical axis direction.
  • FIG. 1 is a perspective view of a surveillance camera 100 including a wiping device according to the present embodiment.
  • FIG. 2 is an exploded view of the surveillance camera 100.
  • FIG. 3 is an exploded perspective view showing the wiping device of the monitoring camera 100.
  • a hollow casing 101 that houses an imaging device (not shown) is fixed to a mounting base 109 installed on a structure such as a pillar or a fence via a bolt BT.
  • a cylindrical barrel 102 containing an optical system (not shown) is connected to one end side (front side in FIG. 2) of the casing 101, and the other end side (back side in FIG. 2) is a screwed lid. It is closed by the member 103.
  • a motor 104 as a drive source is attached in the housing 101.
  • a rotating shaft 104a of the motor 104 extending in parallel with the axial direction of the lens barrel 102 (hereinafter referred to as the optical axis direction) protrudes from the housing 101, and a drive gear 105 is fixed to the tip thereof.
  • a circular rotating ring 106 which is a rotating member, is rotatably attached.
  • An operation gear 106 a is formed around the end of the rotating ring 106 on the housing 101 side, and meshes with the driving gear 105 when the rotating ring 106 is assembled to the lens barrel 102.
  • three cam portions 106b are formed at equal intervals in the circumferential direction so as to protrude inwardly at the inner periphery of the tip of the rotating ring 106.
  • a light shielding hood 107 extending in a bowl shape so as to cover the upper part of the lens barrel 102 while shielding the drive gear 105 and the operating gear 106 a is provided on the other end side of the housing 101. It is screwed to.
  • the lens barrel 102 and the rotating ring 106 protrude outside through a circular opening 107 a of the hood 107.
  • the hood 107 also serves to prevent the rotating ring 106 from coming off.
  • a circular glass flat plate 108 constituting an optical surface is fitted and fixed to the tip of the lens barrel 102.
  • Subject light is taken in via the glass flat plate 108 and the subject is imaged by the imaging device in the housing 101 via the lens in the lens barrel 102.
  • a wiper mechanism 110 that performs a wiping operation of the glass flat plate 108 is provided adjacent to the glass flat plate 108.
  • the lens barrel 102, the wiper mechanism 110, and the rotating ring 106 constitute a wiping device.
  • the wiper mechanism 110 will be described.
  • FIG. 4 is a perspective view of the main part of the wiper mechanism 110 disassembled and showing one side, which is partially cut away. Since the other side is the same, the illustration is omitted.
  • a fixed shaft 102b is fixed so as to extend in the optical axis direction from a pair of boss portions 102a (only one is shown in FIG. 4) formed 180 degrees apart around the tip of the lens barrel 102.
  • a wiper member 111 and a follower member 112 are attached to the fixed shaft 102b.
  • the wiper member 111 is integrated with two cylindrical portions 111a (only one is shown in FIG. 4) that are rotatably fitted to the fixed shaft 102b, and both ends joined to the side surfaces of the two cylindrical portions 111a.
  • Rectangular protrusions 111e are formed at equal intervals along the longitudinal direction on both side surfaces of the core portion 111b.
  • the diameter of the glass flat plate 108 is ⁇ 150 mm
  • the shape, size, and number of the protrusions 111e may vary depending on the diameter of the glass flat plate.
  • Narrow grooves 111f are formed on both sides in the longitudinal direction of the protrusion 111e.
  • a wiper main body 111c made of rubber for a general automobile wiper has a pair of wall portions 111g extending along both side surfaces of the core portion 111b, and a sliding surface having a triangular cross section joined to the wall portion 111g.
  • a plurality of rectangular windows 111i are formed on each wall 111g corresponding to the protrusions 111e.
  • the holding member 111d has a shape whose cross section is bent in a U-shape, and a plurality of rectangular notches 111m corresponding to the protrusions 111e are formed on the pair of side walls 111j.
  • the width W along the longitudinal direction of the notch 111m coincides with the interval G between the narrow grooves 111f of the protrusion 111e.
  • the cylindrical portion 111a, the core portion 111b, and the restraining member 111d are preferably formed of, for example, rubber metal (registered trademark) manufactured by Toyotsu Material Co., Ltd. having a tough and flexible characteristic with a Young's modulus of about 40 to 80 GPa.
  • the wiper body 111c When assembling the wiper member 111, the wiper body 111c is approached while being elastically deformed so as to push and expand the wall 111g from below the core 111b, and the window 111i is fitted into the rectangular protrusion 111e. In this state, since the narrow groove 111f of the protrusion 111e is exposed outside the wall 111g, when the holding member 111d is brought close to the core 111b so that the notch 111m can be inserted along the narrow groove 111f. Since the notch 111m is fitted into the protrusion 111e so that they are coupled, the wall 111g is in close contact with both side surfaces of the core 111b, and the wiper main body 111c is prevented from falling off the core 111b. The When the cylindrical portion 111a of the wiper member 111 assembled in this way is fitted to the fixed shaft 102b, the edge-shaped tip of the sliding portion 111h of the wiper body 111c comes into contact with the glass flat plate
  • the cylindrical part 111a of the wiper member 111 has notches 111n formed at two positions at the upper end in FIG. Further, the follower member 112 disposed above the wiper member 111 has a central opening 112a that fits in a relatively rotatable manner with respect to the fixed shaft 102b, and has a pair of convex portions 112b extending from the lower surface. is doing.
  • the cylindrical portion 111a and the follower member 112 are connected in a non-rotatable manner by bonding or press-fitting in this example, and rotate integrally around the fixed shaft 102b. It has become.
  • the follower member 112 has a follower piece 112c protruding to the outer periphery at a position approximately 180 degrees away from the joint portion of the core portion 111b.
  • the follower piece 112c can be engaged with the cam portion 106b of the rotating ring 106 when the cylindrical portion 111a is assembled to the fixed shaft 102b.
  • FIG. 5 is a view of the glass flat plate 108 and the wiper mechanism 110 viewed in the optical axis direction.
  • the right follower member 112 is a first follower member
  • the left follower member 112 is a second follower member.
  • the core part 111b, the wiper main body 111c, and the holding member 111d be the wiping member 111x.
  • the wiping member 111x extends in an arc shape along the upper periphery of the glass flat plate 108 due to the high elastic characteristics of the core portion 111b and the holding member 111d, and obstructs the view of the surveillance camera. Is suppressed.
  • the driving gear 105 starts rotating at a constant speed clockwise in FIG. 5 by supplying power to the motor 104 in rainy weather
  • the driving force is transmitted via the operating gear 106a meshed with the driving gear 105, and the rotation is performed.
  • the ring 106 rotates counterclockwise around the lens barrel 102.
  • the cam portion 106b engages with the follower piece 112c of the first follower member 112 to rotate the cylindrical portion 111a together with the first follower member 112 counterclockwise by approximately 180 degrees.
  • This posture is called a second phase.
  • the second follower member 112 since the second follower member 112 is not engaged with the cam portion 106b, the second follower member 112 is rotated approximately 180 degrees clockwise by the torque transmitted from the wiping member 111x (see FIG. 5C). This posture is called a second phase.
  • the wiping member 111x moves to the lower side of the glass flat plate 108 and deforms from an S-shape to an arc shape, thereby preventing the view of the surveillance camera from being obstructed.
  • the first cam follower 112 maintains the second phase by the torque transmitted from the wiping member 111x.
  • the wiper body 111c slides while being in contact with the surface of the glass flat plate 108, the wiping operation from the top to the bottom can be performed without wiping the entire surface of the glass flat plate 108.
  • the first follower member 112 since the first follower member 112 is not engaged with the cam portion 106b, the first follower member 112 is rotated approximately 180 degrees clockwise by the torque transmitted from the wiping member 111x. As a result, the first follower member 112 returns to the first phase. Along with this, as shown in FIG. 5 (e), the wiping member 111x moves to the upper periphery of the glass flat plate 108 and deforms from an S-shape to an arc shape, thereby blocking the view of the surveillance camera. Is suppressed. Even after the cam portion 106b is detached, the second cam follower 112 maintains the first phase by the torque transmitted from the wiping member 111x. As described above, since the wiper body 111c slides while being in contact with the surface of the glass flat plate 108, the wiping operation can be performed without wiping the entire surface of the glass flat plate 108.
  • the wiping device when the rotating ring 106 rotates 120 degrees counterclockwise around the lens barrel 102, the wiping device returns to the initial position.
  • the cam portion 106b engages with the follower piece 112c of the first follower member 112 to rotate the cylindrical portion 111a together with the first follower member 112 counterclockwise by approximately 180 degrees.
  • the first follower member 112 rotates to the second phase.
  • FIG. 5G shows a state where the rotating ring 106 is rotated 180 degrees. Thereafter, a similar operation is performed.
  • the wiping device can wipe almost the entire surface of the glass flat plate 108 only by rotating the rotating ring 106 in one direction, and has a simple structure and a minimum number of parts. , Can reduce the cost.
  • the glass flat plate 108 is not provided with a through shaft, it is excellent in rainproof and waterproof, suitable for a surveillance camera installed outdoors, and the entire circular glass flat plate 108 can be uniformly wiped off, and is completely used when not in use. There is an advantage that it does not interfere with visibility.
  • Such wiping devices are not limited to surveillance cameras, such as outdoor equipment windows that have round windows, vehicles, ship windows, or traffic signals in heavy snow areas where snow melting effect is low due to low heat generation. It is also suitable for the light emitting sign part.
  • FIG. 6 is a view of the glass flat plate 108 and the wiper mechanism 110 viewed in the optical axis direction.
  • this modification only one cam portion 106b of the rotating ring 106 is formed over approximately 180 degrees.
  • Other configurations are the same as those in the above-described embodiment.
  • the wiping member 111x extends in an arc shape along the upper periphery of the glass flat plate 108 due to the high elastic characteristics of the core portion 111b and the holding member 111d, and obstructs the view of the surveillance camera. Is suppressed.
  • the second follower member 112 since the second follower member 112 is not engaged with the cam portion 106b, the second follower member 112 is rotated approximately 180 degrees clockwise by the torque transmitted from the wiping member 111x (see FIG. 6C). This posture is called a second phase.
  • the wiping member 111x moves to the lower side of the glass flat plate 108 and deforms from an S-shape to an arc shape, thereby preventing the view of the surveillance camera from being obstructed.
  • the wiper body 111c slides while being in contact with the surface of the glass flat plate 108, the wiping operation from the top to the bottom can be performed without wiping the entire surface of the glass flat plate 108. Even after the cam portion 106b is detached, the first cam follower 112 maintains the second phase by the torque transmitted from the wiping member 111x.
  • the first follower member 112 since the first follower member 112 is not engaged with the cam portion 106b, the first follower member 112 is rotated approximately 180 degrees clockwise by the torque transmitted from the wiping member 111x. As a result, the first follower member 112 returns to the first phase. Accordingly, as shown in FIG. 6 (f), the wiping member 111x moves to the upper periphery of the glass flat plate 108 and deforms from an S-shape to an arc shape, thereby blocking the field of view of the surveillance camera. Is suppressed. As described above, since the wiper body 111c slides while being in contact with the surface of the glass flat plate 108, the wiping operation can be performed without wiping the entire surface of the glass flat plate 108. Even after the cam portion 106b is detached, the second cam follower 112 maintains the first phase by the torque transmitted from the wiping member 111x.
  • the rotating ring 106 when the rotating ring 106 further rotates 360 degrees counterclockwise around the lens barrel 102, it returns to the initial position as shown in FIG. 6 (g). Thereafter, the same operation is performed.
  • one reciprocal wiping operation of the wiping member 111x is realized by one rotation of the rotating ring 106.
  • FIG. 7 is a view of the glass flat plate 108 and the wiper mechanism 110 viewed in the optical axis direction.
  • five cam portions 106b of the rotating ring 106 are formed at equal intervals in the circumferential direction.
  • Other configurations are the same as those in the above-described embodiment.
  • the wiping member 111x extends in an arc shape along the upper periphery of the glass flat plate 108 due to the high elastic characteristics of the core portion 111b and the holding member 111d, and obstructs the view of the surveillance camera. Is suppressed.
  • the second follower member 112 since the second follower member 112 is not engaged with the cam portion 106b, the second follower member 112 is rotated approximately 180 degrees clockwise by the torque transmitted from the wiping member 111x (see FIG. 7C). This posture is called a second phase.
  • the wiping member 111x moves to the lower side of the glass flat plate 108 and deforms from an S-shape to an arc shape, thereby preventing the view of the surveillance camera from being obstructed.
  • the first cam follower 112 maintains the second phase by the torque transmitted from the wiping member 111x.
  • the wiper body 111c slides while being in contact with the surface of the glass flat plate 108, the wiping operation from the top to the bottom can be performed without wiping the entire surface of the glass flat plate 108.
  • the cam portion 106b engages with the follower piece 112c of the second follower member 112, and rotates the cylindrical portion 111a together with the second follower member 112 counterclockwise. Rotate approximately 180 degrees. As a result, the second follower member 112 returns to the first phase (see FIG. 7D).
  • the first follower member 112 since the first follower member 112 is not engaged with the cam portion 106b, the first follower member 112 is rotated approximately 180 degrees clockwise by the torque transmitted from the wiping member 111x. As a result, the first follower member 112 returns to the first phase. Accordingly, as shown in FIG. 7 (e), the wiping member 111x moves to the upper periphery of the glass plate 108 and deforms from an S-shape to an arc shape, thereby blocking the view of the surveillance camera. Is suppressed. Even after the cam portion 106b is detached, the second cam follower 112 maintains the first phase by the torque transmitted from the wiping member 111x. As described above, since the wiper body 111c slides while being in contact with the surface of the glass flat plate 108, the wiping operation can be performed without wiping the entire surface of the glass flat plate 108.
  • the wiping member 111x is deformed into an S shape as shown in FIG.
  • the state shifts to the state shown in FIG. Thereafter, the same operation is performed.
  • the present invention is not limited to the embodiments described in the specification, and includes other embodiments and modifications based on the embodiments and technical ideas described in the present specification. It is clear to the contractor.
  • the rotating ring may be driven to rotate using a belt, a pulley, or a chain drive instead of a gear.
  • the number of cam portions is not limited to the above, and may be an odd number.
  • the optical surface may have a curvature instead of a flat surface.
  • the shape of the region that can be wiped off with the wiper of the present invention is limited to a circle, but the effect of the invention can be obtained even if it is an oval or polygonal shape as long as it fits within the inner diameter of the rotating ring. .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Studio Devices (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Lens Barrels (AREA)

Abstract

L'invention concerne un dispositif d'essuyage qui peut réduire au minimum un résidu d'essuyage sur une surface optique et réaliser un essuyage efficace, malgré sa petite taille et le faible nombre d'éléments. Lorsqu'un premier élément suiveur est en prise avec une partie de came d'un anneau rotatif et, de ce fait, passe d'une première à une seconde phase, un élément d'essuyage glisse sur une plaque de verre en raison du couple transmis par le premier élément suiveur à l'élément d'essuyage. Le couple est en outre transmis à un second élément suiveur par l'élément d'essuyage qui a glissé, le second élément suiveur passant de la première phase à la seconde phase, ce qui amène l'élément d'essuyage à se déplacer vers la zone sur l'autre côté de la plaque de verre. Lorsque le second élément suiveur est en prise avec la partie de came et, de ce fait, passe de la seconde phase à la première phase, l'élément d'essuyage glisse sur la plaque de verre en raison du couple transmis par le second élément suiveur à l'élément d'essuyage. Le couple est en outre transmis au premier élément suiveur par l'élément d'essuyage qui a glissé, le premier élément suiveur passant de la seconde phase à la première phase, ce qui amène l'élément d'essuyage à se déplacer vers la zone sur le premier côté de la plaque de verre.
PCT/JP2016/087869 2016-01-06 2016-12-20 Dispositif d'essuyage WO2017119278A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017560086A JPWO2017119278A1 (ja) 2016-01-06 2016-12-20 拭き取り装置

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JP2016000992 2016-01-06
JP2016-000992 2016-01-20

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WO2017119278A1 true WO2017119278A1 (fr) 2017-07-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022212476A1 (fr) * 2021-03-31 2022-10-06 Michigan Aerospace Corporation Essuie-glace

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083942A (fr) * 1973-11-30 1975-07-07
JP2007117103A (ja) * 2005-10-24 2007-05-17 Olympus Medical Systems Corp 内視鏡用シース，内視鏡装置
JP2015531896A (ja) * 2012-09-24 2015-11-05 エレクトロ メカニカル システムズ リミテッド 光学素子の露出面を清掃するためのワイパー

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083942A (fr) * 1973-11-30 1975-07-07
JP2007117103A (ja) * 2005-10-24 2007-05-17 Olympus Medical Systems Corp 内視鏡用シース，内視鏡装置
JP2015531896A (ja) * 2012-09-24 2015-11-05 エレクトロ メカニカル システムズ リミテッド 光学素子の露出面を清掃するためのワイパー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022212476A1 (fr) * 2021-03-31 2022-10-06 Michigan Aerospace Corporation Essuie-glace

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