Patents Assigned to Fujitec Co., Ltd.
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Patent number: 12522474Abstract: The present invention provides an elevator door device including a door rail, a door part configured to move by rolling of a roller on the door rail, a door drive part, and a wear-debris adhesion suppression part extending in an opening and closing direction of the door part. The door drive part includes a motor part configured to drive and rotate a drive pulley, a driven pulley disposed apart from the drive pulley in the opening and closing direction, and an endless belt that is wound around the drive pulley and the driven pulley, and to which the door part is connected. The door rail is located below the drive pulley. The wear-debris adhesion suppression part is disposed between the drive pulley, and the door rail and the roller, and disposed at a position corresponding to the drive pulley in the opening and closing direction.Type: GrantFiled: August 8, 2024Date of Patent: January 13, 2026Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Publication number: 20250282577Abstract: Provided are a car of an elevator, and an elevator that achieve weight reduction for a support frame. The support frame includes brackets at multiple locations on an upper edge, and supports a first pulley, a second pulley, and a door position detection part via the brackets. This eliminates the need to secure an area on a front face of the support frame for arranging the first pulley, the second pulley, and the door position detection part. Therefore, the height dimension of the support frame can be reduced to achieve weight reduction for the support frame.Type: ApplicationFiled: January 17, 2025Publication date: September 11, 2025Applicant: FUJITEC CO., LTD.Inventor: Hiroshi KASHIWAKURA
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Patent number: 12371305Abstract: Provided is an operation setting device for an elevator door device, which includes: a door type selection part that selects opening types of a car door; a speed index selection part that selects an index of an opening and closing speed set for the car door; and a processing part that executes setting processing of deriving operation setting information representative of a setting content related to an opening and closing operation of the door device, and outputting the operation setting information to a controller that controls the opening and closing operation of the door device. The processing part includes a speed pattern deriving part that derives speed pattern information on the basis of the opening type selected by the door type selection part and the index of the opening and closing speed selected by the speed index selection part, in which the speed pattern information is the operation setting information.Type: GrantFiled: March 26, 2021Date of Patent: July 29, 2025Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 12234124Abstract: Car doors hanging down via door hangers are disposed on a door rail that is disposed on a vertically-oriented frame disposed above an entrance of a car and extends along a width direction of the entrance of the car. One of a magnetic proximity switch and a target for detecting that the car doors are fully open and fully closed is disposed on a horizontal part extending from an upper end of the frame toward the entrance of the car. The remaining one of the magnetic proximity switch and the target is disposed on an extending part extending from each of the door hangers so as to be opposed in a vertical direction to the one of the magnetic proximity switch and the target for detection.Type: GrantFiled: September 6, 2023Date of Patent: February 25, 2025Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 12180036Abstract: An elevator motor mounting structure includes a bracket attachment part arranged above a car entrance, a bracket for supporting a motor, and a bolt for fixing the bracket to the bracket attachment part. The bracket includes a cutout that allows a shank of the bolt to enter the cutout when the bracket is attached to the bracket attachment part. The cutout has an entrance-direction cutout portion that extends inward of a car from a side end of the bracket in which the side end faces outward in an entrance direction of the car, and a width-direction cutout portion that extends from an inner end of the entrance-direction cutout portion in a width direction of the car entrance.Type: GrantFiled: August 1, 2023Date of Patent: December 31, 2024Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 12060248Abstract: An elevator safety device includes: a light projector configured to emit light beam; a reflector reflecting the light beam emitted from the light projector; and a light receiver configured to receive the light beam reflected by the reflector. The light projector and the light receiver are arranged between a car landed on a landing floor and a wall of an elevator shaft and above an upper end of an entrance opening. The reflector is arranged between the car landed on the landing floor and the wall of the elevator shaft and below a lower end of the entrance opening.Type: GrantFiled: April 13, 2021Date of Patent: August 13, 2024Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11691852Abstract: The present invention includes a height raising member body mountable to an upper end of a frame disposed above an entrance of a car that moves up and down through an elevator shaft, in which a rail for guiding a car door in an opening and closing direction and a pulley for use in opening and closing drive of the car door are mounted to the frame. The height raising member body characteristically includes: a base part connectable to the frame; and a supporting part capable of supporting the motor at a position upward away from the base, the motor being configured to drive the pulley via a belt.Type: GrantFiled: December 3, 2021Date of Patent: July 4, 2023Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11655124Abstract: The present invention provides a support jig for assembling an elevator car including; a first member including a first member body configured to be detachably fixed to a car rail having a front surface and a rear surface and vertically extending in a shaft to guide the ascending and descending of the elevator car on the front surface side, and a mount part on which a component of the elevator car is mountable; and a second member including a second-member fixing part configured to be detachably fixed to the car rail, and a support part extending from the second-member fixing part and configured to support the mount part of the first member from below.Type: GrantFiled: February 1, 2022Date of Patent: May 23, 2023Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11572255Abstract: Provided is a door lock operation member for elevator door lock device for operating an elevator door lock device, the elevator door lock device including an interlock and a car door lock, the interlock being configured to lock the movement of a landing door in the opening direction when the landing door is in a closed state, the car door lock being configured to lock the movement of a car door in the opening direction when the car door is in a closed state. The door lock operation member further includes a lock operation part configured to actuate both the interlock and the car door lock in association with movements of the car door in the opening direction and in the closing direction.Type: GrantFiled: April 13, 2021Date of Patent: February 7, 2023Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11572254Abstract: Provided is a door engagement device including an engaging body including an engaging part, the engaging part being configured to engage with an engaged part provided on a driven door that is either one of the landing door and the car door of an elevator, and transmit a driving force that moves a driving door in an opening and closing direction to the driven door, the driving door being the remaining one of the landing door and the car door; and a base that is connected to the driving door and the engaging body. The position of the engaging part is changeable relative to the base in an aligning direction, in which the landing door and the car door align with each other when the landing and car doors are opened and closed.Type: GrantFiled: February 19, 2021Date of Patent: February 7, 2023Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11506524Abstract: The present invention provides an elevator encoder diagnostic system and an elevator encoder diagnostic method by which input and output ports are kept from being occupied, functional restriction is suppressed, and abnormalities and malfunctions occurring in encoders provided in a dual-system can be detected. The elevator encoder diagnostic system according to the present invention includes a first encoder 16a and a second encoder 16b that are provided on a rotary portion of the elevator, a first diagnostic unit 21a connected to the first encoder, and a second diagnostic unit 21b connected to the second encoder, a first determination unit 23a and a second determination unit 23b that detect differences between encoder rotation amounts of the respective encoder systems and rotation detection signals of the other encoder systems, and, if a difference therebetween exceeds a predetermined threshold, determines that an abnormality has occurred.Type: GrantFiled: October 7, 2019Date of Patent: November 22, 2022Assignee: FUJITEC CO., LTD.Inventors: Tsutomu Takahama, Shunpei Yamaoka, Ryosuke Matsui
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Patent number: 11453573Abstract: Provided is an elevator door engagement device including a first member and a second member extending in a vertical direction; at least one of a first link member and a second link member, the first link member constituting together with the first member a parallel link mechanism, the second link member constituting together with the second member a parallel link mechanism; a first roller arranged in the first member; and a second roller arranged in the second member.Type: GrantFiled: March 1, 2021Date of Patent: September 27, 2022Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11440775Abstract: Provided is a door engagement device including: a first member that extends in a vertical direction and is able to come into contact with an engaged part from a door closing direction side; a second member that extends in the vertical direction at a position with a distance from the first member to a door opening side and is able to come into contact with the engaged part from a door opening direction side; a pair of link members that form a parallel link mechanism in cooperation with the first member so as to enable the first member to pivotally move between a predetermined first position and a predetermined second position located closer to the door closing direction side than the first position while keeping the posture of the first member; and a restricting part that releasably restricts the pivotal movement of the first member at the first position.Type: GrantFiled: March 6, 2020Date of Patent: September 13, 2022Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11427442Abstract: An anti-falling device for a door of an elevator of the present invention includes: a door hanger; and a first roller and a second roller both provided on the door hanger and arranged to face a lower end surface of the door rail. The first roller is made of a metal is and arranged at a position downwardly away from the lower end surface of the door rail. The second roller is configured to be in elastic contact with the door rail, and is arranged to be held in contact with the lower end surface or arranged at a position closer to the lower end surface than the first roller.Type: GrantFiled: March 18, 2020Date of Patent: August 30, 2022Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11345573Abstract: A door interlock of the present invention includes an engaged part and an engaging part configured to lock a door in a door closed state. The engaging part includes: a locking member; a mounting member mounted to the locking member; a sim member inserted into a slit; a first fixing member; and a second fixing member. The first fixing member is configured to be inserted into a first lock through hole, a first sim through hole, and a mount through hole, thereby fixing the mounting member and the sim member to the locking member. The second fixing member is configured to be inserted into a second lock through hole and a second sim through hole, thereby fixing the sim member to the locking member.Type: GrantFiled: December 23, 2020Date of Patent: May 31, 2022Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Patent number: 11325812Abstract: A damping device for a main rope suspending a car of an elevator includes a coupled, a first pulley and a drive. The coupler is attached to the main rope above the car, and is configured to be pulled, in response to vibrations of the main rope, with a damping rope so as to suppress vibrations of the main rope. The first pulley is supported at a same height as a height of the coupler. The drive is configured to suppress vibration of the main rope by pulling a first damping rope coupled to the coupler and passing over the first pulley.Type: GrantFiled: January 29, 2020Date of Patent: May 10, 2022Assignee: FUJITEC CO., LTD.Inventors: Koichi Sato, Junichi Nakagawa, Yusuke Ono
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Patent number: 11319189Abstract: An elevator includes a compensating sheave, a compensating rope, a guide, a holder, a driver, a lateral vibration detector, and driver controller. The compensating rope is looped around the compensating sheave to be bent back upward in a hoistway, and has a first end connected to a car and a second end connected a counterweight, the compensating rope suspended from the car and the counterweight. The guide guides the compensating sheave in a vertically displaceable manner. The holder holds the guide to be displaceable in a horizontal direction. The driver drives the holder in the horizontal direction. The lateral vibration detector detects lateral vibration of the compensating rope. The driver controller controls the driver based on a result of detection by the lateral vibration detector and accordingly drive the holder in the horizontal direction so as to dampen lateral vibration of the compensating rope.Type: GrantFiled: October 16, 2020Date of Patent: May 3, 2022Assignee: FUJITEC CO., LTD.Inventors: Koichi Sato, Junichi Nakagawa, Yuji Morooka, Yusuke Ono
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Patent number: 11242224Abstract: Provided is an elevator door device including: a rail that is disposed above an entrance; an opening and closing part of the entrance; and a locking mechanism that locks the opening and closing part. The locking mechanism includes: an engaging part including an engaging body that changes its position between a releasing position and an engaging position in association with the opening and closing of the opening and closing part; and an engaged part including an engaged body engaged with the engaging body at the engaging position. The engaged part is disposed in an area between the rail and the entrance, and overlaps with the rail as seen in plan view in the area. The opening and closing part has such a shape as to be able to open and close without abutting on the engaged part.Type: GrantFiled: September 3, 2019Date of Patent: February 8, 2022Assignee: FUJITEC CO., LTD.Inventor: Hiroshi Kashiwakura
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Publication number: 20210025739Abstract: The present invention provides an elevator encoder diagnostic system and an elevator encoder diagnostic method by which input and output ports are kept from being occupied, functional restriction is suppressed, and abnormalities and malfunctions occurring in encoders provided in a dual-system can be detected. The elevator encoder diagnostic system according to the present invention includes a first encoder 16a and a second encoder 16b that are provided on a rotary portion of the elevator, a first diagnostic unit 21a connected to the first encoder, and a second diagnostic unit 21b connected to the second encoder, a first determination unit 23a and a second determination unit 23b that detect differences between encoder rotation amounts of the respective encoder systems and rotation detection signals of the other encoder systems, and, if a difference therebetween exceeds a predetermined threshold, determines that an abnormality has occurred.Type: ApplicationFiled: October 7, 2019Publication date: January 28, 2021Applicant: FUJITEC CO., LTD.Inventors: Tsutomu TAKAHAMA, Shunpei Yamaoka, Ryosuke Matsui
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Patent number: 10494223Abstract: When the received allocation request information indicates that the user information is obtained from the information communication terminal, the controller makes the storage unit store the allocation request information, and after elapse of a predetermined time from the reception of the allocation request information, reads the allocation request information to decide the allocation elevator to which the call relating to the allocation request information is to be allocated, and transmits information indicating the decided allocation elevator to the information communication terminal via a predetermined radio communication device.Type: GrantFiled: January 18, 2017Date of Patent: December 3, 2019Assignee: FUJITEC CO., LTD.Inventors: Takeshi Sudo, Akira Komura