EP2126628A2 - Appareil élévateur encastré au plafond, destiné à un projecteur multimédia - Google Patents

Appareil élévateur encastré au plafond, destiné à un projecteur multimédia

Info

Publication number
EP2126628A2
EP2126628A2 EP08716163A EP08716163A EP2126628A2 EP 2126628 A2 EP2126628 A2 EP 2126628A2 EP 08716163 A EP08716163 A EP 08716163A EP 08716163 A EP08716163 A EP 08716163A EP 2126628 A2 EP2126628 A2 EP 2126628A2
Authority
EP
European Patent Office
Prior art keywords
platform
base plate
ceiling
projector
lifting
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP08716163A
Other languages
German (de)
English (en)
Inventor
Hans Weibel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GREEN BARRY C
Original Assignee
GREEN BARRY C
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 GREEN BARRY C filed Critical GREEN BARRY C
Publication of EP2126628A2 publication Critical patent/EP2126628A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories

Definitions

  • the invention relates to a ceiling mount for a multimedia projector, installable in a ceiling cavity.
  • Multimedia projectors also referred to as projectors
  • projectors are frequently used in conference rooms, projection rooms, training rooms, living rooms, etc. It is known that the ceiling of the multimedia projector to use and to install this together with the projector in a ceiling cavity usually invisible. In use, the projector can be extended from the ceiling cavity down, when not in use, it remains sunk in the ceiling cavity, the required cutout in the hollow ceiling is usually closed by a cover plate.
  • a ceiling mount of this kind is known for example from EP-A-I 156 364. It has a mountable to a raw ceiling, frame-shaped base plate and a projector receiving, with respect to the base plate from a non-use position lowered into a position of use on. For lowering and lifting the platform drivable lifting spindles are present in parallel in both directions of rotation, which are operatively connected to corresponding spindle nuts.
  • the present invention has for its object to further improve the Deckeneinbaulift of the aforementioned type.
  • the lifting spindles of the ceiling mounting pin and the spindle nuts are provided with a round thread, wherein the spindle nuts are nylon threaded nuts.
  • a special grease Molykote special grease
  • an extremely long life is achieved without the need for regreasing. Tests have shown that sinking and lifting the platform once every day would give a lifespan of 100 years. For conventional trapezoidal threads this would only take 4-7 years. After that, the rattling starts with the platform movement, which extremely damages the projector and also disturbs it acoustically.
  • the common drive of the lifting spindles is arranged within the quarter defined by the lifting spindles, below the base plate and fastened to the latter, the platform being provided with a recess enclosing the drive at least in the non-use position.
  • the platform is provided with a support plate adjustable in its inclination to the platform, to which a quick-change plate connected to the projector can be fastened.
  • the projector can be adjusted horizontally, vertically and sideways with the help of the support plate at the first installation and aligned exactly on the screen, and then fixed. After that, the projector can be removed from the built-in ceiling recessed ceiling mounting within less than a minute and without the use of tools at any time.
  • the set position of the mounting plate remains unchanged and the projector can be installed in the simplest way again, without having to be re-aligned on the screen, ie it is ready for use immediately.
  • the ceiling mounting lift according to the invention also includes a control with control lines to the drive motor and the projector.
  • the engine according to the invention is equipped with a torque limiter, for automatically switching off the lifting operation of the platform in a trapping event. After a pinching event, the electronics completely switch off the motor drive after just a few seconds.
  • Fig. 1 shows an embodiment of an inventive ceiling mounting pin for a multimedia projector in perspective view.
  • the ceiling mounting 1 shows a ceiling mounting lift 1 for a multimedia projector which can be installed in a ceiling cavity formed between a raw ceiling, for example a concrete ceiling, and a cladding.
  • the ceiling mounting 1 has a frame-shaped, fastened to the raw ceiling base plate 2.
  • four spindle bearings are mounted, in each of which one of the base plate 2 projecting downwardly Hubspindel 3 is mounted. The spindle bearings are not apparent from Fig.
  • the lifting spindles 3 and the spindle nuts 4 are provided with a round thread, wherein the spindle nuts 4 are nylon threaded nuts. This ensures that the thread does not rattle when it is operated without grease. It was also surprisingly found that with an initial, light greasing with a special grease (Molykote special grease) an extremely long life is achieved without a re-greasing is necessary. Tests have shown that sinking and lifting Platform 5 once a day would give a lifespan of 100 years. For conventional trapezoidal threads this would be about 4-7 years. After that, rattling starts with platform movement, which damages the projector extremely and also disturbs it acoustically.
  • a special grease Molykote special grease
  • the drive comprising the motor 7 is arranged within the quarter defined by the lifting spindles 3, below the base plate 2 and fixed thereto, the platform 5 being provided with a recess 9 enclosing the drive at least in the non-use position.
  • the inventive Deckeneinbaulift is more compact and can be correspondingly easier to be installed in or in an even smaller ceiling cavity.
  • a mounting plate 10 for the projector is mounted in its lying outside the recess 9 for the drive area, which is adjustable in its inclination to the platform 5.
  • the adjustment is done by means of clamping screws and exchangeable spacer elements, thanks to which the rocking of the support plate 10 can be effected.
  • the projector itself is equipped with a quick release plate (not shown), which can be fastened to the support plate 10 by inserting two slots under two fixing heads and subsequent insertion of a handle screw.
  • the projector can be adjusted horizontally, vertically and sideways with the help of the support plate 10 at the first installation and aligned exactly on the screen, and then fixed. After that, the projector can be removed from the built-in ceiling recessed ceiling mounting within less than a minute and without the use of tools at any time.
  • the set position of the support plate 10 remains unchanged and the projector can be installed in the simplest way again, without having to be re-aligned on the screen, i. It is ready for use immediately and also precisely aligned with the preset screen position.
  • the ceiling-mounted lift 1 also includes a control with control lines to the motor 7 and to the projector.
  • the motor 7 is erfmdungshacke equipped with a torque limiter, for automatically switching off the lifting operation of the platform in a pinching event.
  • the resetting the activated automatic emergency stop can be done by interrupting the power supply from the mains for a predetermined time (minimum 30 seconds). After fixing the problem, the electronic control can be operated again.
  • brackets 12 are infinitely adjustable in height and closely guided for exact positioning.
  • the upper and lower end position of the platform 5 is effected in each case by a mounted with a platform 5 limit switches 15 and 16, which are cooperating with the switching and safety bars 13 and by hitting the base plate 2.
  • the provided at the limit switch 15 roller 15 'causes a shutdown of the motor 7 when the platform 5 is fully extended.
  • the limit switch 16 is responsible for a shutdown.
  • the cable holder 17 allows an orderly and controlled cable management. It prevents the jamming or hanging of cables.
  • the ceiling installation lift according to the invention could well deviate from the embodiment shown in FIG. For example, the presence of four lifting spindles 3 is not absolutely necessary, but particularly advantageous.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

La présente invention concerne un appareil élévateur encastré au plafond, destiné à un projecteur multimédia, qui peut être encastré dans une cavité de plafond. Cet appareil élévateur présente une plaque de base (2) en forme de châssis, qui peut être fixée à un plafond brut, ainsi qu'une plate-forme (5) qui est conçue pour recevoir le projecteur et qui peut se déplacer vers le bas par rapport à la plaque de base (2), d'une position de non-utilisation à une position d'utilisation. Des vis de levage (3) qui sont en liaison fonctionnelle avec des écrous de vis (4) et qui peuvent être entraînées de façon synchrone dans les deux sens de rotation sont utilisées pour faire descendre et faire monter la plate-forme (5). Les vis de levage (3) et les écrous de vis (4) présentent un filet rond et les écrous de vis (4) sont des écrous filetés en nylon.
EP08716163A 2007-03-09 2008-03-01 Appareil élévateur encastré au plafond, destiné à un projecteur multimédia Withdrawn EP2126628A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3772007 2007-03-09
PCT/EP2008/001641 WO2008110273A2 (fr) 2007-03-09 2008-03-01 Appareil élévateur encastré au plafond, destiné à un projecteur multimédia

Publications (1)

Publication Number Publication Date
EP2126628A2 true EP2126628A2 (fr) 2009-12-02

Family

ID=39707970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08716163A Withdrawn EP2126628A2 (fr) 2007-03-09 2008-03-01 Appareil élévateur encastré au plafond, destiné à un projecteur multimédia

Country Status (8)

Country Link
US (1) US7963495B2 (fr)
EP (1) EP2126628A2 (fr)
AU (1) AU2008226089B9 (fr)
CA (1) CA2589669A1 (fr)
RU (1) RU2464609C2 (fr)
UA (1) UA100977C2 (fr)
WO (1) WO2008110273A2 (fr)
ZA (1) ZA200906547B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384344B (zh) * 2010-09-03 2013-11-06 黄铭贤 可微调转动角度及倾斜度的承载装置
CN106168253B (zh) * 2016-08-29 2019-04-23 深圳市台电实业有限公司 嵌入式多媒体会议单元及多媒体数字会议系统
RU176849U1 (ru) * 2017-01-17 2018-01-30 Общество с ограниченной ответственностью "Тетерин Фильм" Подвесной короб для кинопроектора
CN107367891B (zh) * 2017-08-23 2020-04-17 深圳市昌卓科技有限公司 一种智能投影播放器
KR102031787B1 (ko) * 2019-07-11 2019-10-18 키노톤코리아 주식회사 고속 승하강 타입 영사기 부스 시스템

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
GB980087A (en) * 1960-05-24 1965-01-13 Metallifacture Ltd Improvements in or relating to jacks
US4577827A (en) * 1982-09-30 1986-03-25 Lois G. Langley Camera holder apparatus
US4750832A (en) * 1985-11-06 1988-06-14 Mcdaniel & Lloyd, Inc. Video projector mount
US4978984A (en) * 1989-08-15 1990-12-18 Brookfield Richard A Surveillance apparatus
DE4018432A1 (de) * 1990-06-08 1991-12-12 Os Co Hebevorrichtung fuer einen projektor
US5252015A (en) * 1991-11-04 1993-10-12 Davis Walter S Adjustable pre-load screw and nut assembly
US6042068A (en) * 1997-09-04 2000-03-28 Peerless Indsutries, Inc. Low profile LCD projector mount
ATE235070T1 (de) * 2000-05-18 2003-04-15 Av Weibel Deckeneinbaulift für multimedia-projektor
JP2002283532A (ja) * 2001-03-28 2002-10-03 Dainippon Printing Co Ltd 軸なし版胴交換装置
JP2002370896A (ja) * 2001-04-10 2002-12-24 Os:Kk プロジェクター用昇降装置
US7481410B2 (en) * 2002-06-24 2009-01-27 Business Machines Security, Inc. Equipment security apparatus
RU2221534C1 (ru) * 2002-07-29 2004-01-20 Степанов Вадим Степанович Кровать функциональная
JP2004226638A (ja) * 2003-01-22 2004-08-12 Kuriputon:Kk プロジェクタ投射角調整装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008110273A3 *

Also Published As

Publication number Publication date
RU2464609C2 (ru) 2012-10-20
CA2589669A1 (fr) 2008-09-09
RU2009137374A (ru) 2011-04-20
ZA200906547B (en) 2010-06-30
WO2008110273A2 (fr) 2008-09-18
AU2008226089B9 (en) 2013-09-19
WO2008110273A3 (fr) 2009-01-29
US7963495B2 (en) 2011-06-21
AU2008226089A1 (en) 2008-09-18
UA100977C2 (ru) 2013-02-25
AU2008226089B2 (en) 2013-09-05
US20080217499A1 (en) 2008-09-11

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