EP0316182A1 - Teleskoptribüne - Google Patents

Teleskoptribüne Download PDF

Info

Publication number
EP0316182A1
EP0316182A1 EP88310616A EP88310616A EP0316182A1 EP 0316182 A1 EP0316182 A1 EP 0316182A1 EP 88310616 A EP88310616 A EP 88310616A EP 88310616 A EP88310616 A EP 88310616A EP 0316182 A1 EP0316182 A1 EP 0316182A1
Authority
EP
European Patent Office
Prior art keywords
section
stand
pair
sprocket assemblies
chains
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.)
Granted
Application number
EP88310616A
Other languages
English (en)
French (fr)
Other versions
EP0316182B1 (de
Inventor
Takayasu Mitsumoto
Kazunobu Katayose
Tsuneo Shimomura
Junnosuke Sato
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.)
Okamura Corp
Original Assignee
Okamura Corp
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 Okamura Corp filed Critical Okamura Corp
Publication of EP0316182A1 publication Critical patent/EP0316182A1/de
Application granted granted Critical
Publication of EP0316182B1 publication Critical patent/EP0316182B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
    • E04H3/10—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons for meetings, entertainments, or sports
    • E04H3/12—Tribunes, grandstands or terraces for spectators
    • E04H3/123—Telescopic grandstands

Definitions

  • the present invention relates to an apparatus for causing straight movement of a section of a movable stand having a plurality of sections and capable of being elongated and contracted.
  • Movable stands used for multi-purpose halls are well-known in the art.
  • Such a moveable stand comprises a plurality of sections. When it is not used, it is contracted to a state, in which each section in held under the adjacent section immediately behind. When used, it is elongated to a staircase-like form with each stair constituted by each section, and folded seats on each section are unfolded.
  • the individual section is moved with wheels along the floor (i), and the opposite sides of a rear portion of each section are guided by the section immediately behind. Therefore, when the stand is elongated, the sections are liable to draw a meandering trace as they are moved.
  • United States Patent No. 3,400,502 discloses a movable stand, in which each section is provided with means for causing straight movement of it.
  • This means consists of ropes and pulleys arranged such as to form a parallel rule.
  • the present invention has an object of providing an apparatus for causing straight movement of a section of a movable stand, which permits each section to be moved straight when the stand is elongated and contracted.
  • an apparatus for causing straight movement of a stand section in a movable stand comprising a plurality of stand sections and each of them capable of being contracted telescopically, when not used, to one stand form, and also being elongated, when used, to a staircase-like stand form with each stair constituted by each of said sections, characterized in that a pair of horizontal sprocket assemblies are provided on the rear end of the foremost stand section in use, a pair of chains are provided so that front end portions thereof are secured to the opposite inner side walls of a stand section immediately behind the foremost stand section in use, intermediate portions thereof are passed round said pair of sprocket assemblies such as to cross each other between said sprocket assemblies, and rear end portions are secured to the opposite inner side walls of said stand section behind, whereby said chains and said sprocket assemblies function in combination as a parallel rule.
  • the left and right sprocket assemblies and pair chains are adapted to function in combination as a parallel rule, the sprocket assemblies are rotated in unison and without any slip and provides equal and opposite torques to the section, so that parallel and straight movement of the section can be ensured.
  • a movable stand 1 which consists of a plurality of, i.e., three in this embodiment, stages 2 to 4.
  • the sections 2 to 4 are arranged one behind another in the mentioned order, and the section 2 is the foremost section.
  • Each section has a width and height, which are reduced compared to those of the section immediately behind it.
  • the stand 1 When the stand 1 is not used, it is held in a contracted state, in which each section is held right under the section immediately behind it in the state of use. When using the stand, it is extended forwardly to a staircase-like form. At this time, the individual sections are moved in an interlocked relation to one another by drive means (not shown).
  • the mechanism for moving the sections are the same as for the prior art movable stand shown in Fig. 6, so it will not described any further.
  • the invention concerns an apparatus for causing straight and parallel movement of sections by using a combination of chains and sprockets as a parallel rule.
  • the first, i.e., foremost, section 2 is a box-like open at the bottom, that is, it has a floor panel 5 at the top, front and rear panels 5a and 5b depending from the respective front and rear edges of the floor panel, and side panels 5c and depending from the opposite side edges of the floor panel.
  • the second and third sections 3 and 4 like the first section 2, respectively have floor panels 6 and 7 at the top, front and rear panels 5a, 7a and 6b, 7b and side panels 6c and 7c.
  • the first section 2 has a pair of vertical shafts 8 and 9 mounted by mounting members on the outer surface of the rear panel 5b adjacent to the opposite sides.
  • the vertical shafts 8 and 9 extend upwardly into the second section 3.
  • a sprocket assembly 11 consisting of two, i.e., upper and lower, sprockets 11a and 11b integral with each other is rotatably mounted on a upper portion of the left side vertical shaft 8, and another sprocket assembly 12, also consisting of a pair of sprockets 12a and 12b is rotatably mounted on an upper portion of the right side vertical shaft 9.
  • a reference numeral 13 designates a chain, which has a front end portion 13a secured to a chain support member 15 extending from the front end of a horizontal member 14 extending horizontally inwardly from the left side panel 6c, has an intermediate portion 136 passed round a rear portion of the upper sprocket 11a of the left side sprocket assembly 11 and then round a front portion of the upped sprocket 12a of the right side sprocket assembly 12, and has a rear end portion 13c secured to a chain support member 17 extending from the front end of a horizontal plate 16 extending horizontally inwardly from the right side panel 6c.
  • the chain 13 is stretched in the form of Figure 2 in plan view.
  • Another chain 18 is stretched symmetrically with respect to the chain 13. More specifically, it has a front end portion 18a secured to a chain support member 19 provided on the right side panel, has an intermediate portion 18b passed round the sprockets 12b and 11b and has a rear end portion 18c secured to a chain support member 20 provided on the left side panel.
  • the chains 13 and 18 cross each other between the sprocket assemblies 11 and 12.
  • the second section 3 also has a pair of, i.e., left and right, sprocket assemblies 21 and 22 mounted on the rear panel 6b and has left and right chains 23 and 24 stretched likewise such that they cross each other between the sprocket assemblies 23 and 24.
  • the left and right sprocket assemblies 11 and 12 of the first section 2 are in mesh with portions of the chains 13 and 18 of the immediately adjacent section 3 near the rear end thereof.
  • the second section 3 likewise moved straight forwardly with forward movement of the sprocket assemblies 21 and 22 relative to the pair chains 23 and 24 stretched in the third section 4.
  • chains and sprocket assemblies are provided in combination functioning like a parallel rule to permit straight movement of the stand section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Transmission Devices (AREA)
  • Warehouses Or Storage Devices (AREA)
EP19880310616 1987-11-11 1988-11-10 Teleskoptribüne Expired - Lifetime EP0316182B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17128887U JPH0432445Y2 (de) 1987-11-11 1987-11-11
JP171288/87 1987-11-11

Publications (2)

Publication Number Publication Date
EP0316182A1 true EP0316182A1 (de) 1989-05-17
EP0316182B1 EP0316182B1 (de) 1993-06-09

Family

ID=15920536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880310616 Expired - Lifetime EP0316182B1 (de) 1987-11-11 1988-11-10 Teleskoptribüne

Country Status (3)

Country Link
EP (1) EP0316182B1 (de)
JP (1) JPH0432445Y2 (de)
DE (1) DE3881642T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998002628A1 (en) * 1996-07-15 1998-01-22 Charles Thomas Lyons A combined stairway and lift installation, and a retractable stairway
US6050366A (en) * 1996-07-15 2000-04-18 Hydraulic Technical Services (Consultants) Ltd. Combined stairway and lift installation and a retractable stairway
US6598351B2 (en) * 2001-07-16 2003-07-29 Stageright Corporation Telescopic seating riser assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400502A (en) * 1966-09-22 1968-09-10 American Seating Co Telescoping platform structure
US3667171A (en) * 1971-01-08 1972-06-06 American Seating Co Row folding seating structure
DE2935440A1 (de) * 1979-09-01 1981-03-19 Telekon GmbH, 5000 Köln Antrieb fuer eine teleskoptribuene

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400502A (en) * 1966-09-22 1968-09-10 American Seating Co Telescoping platform structure
US3667171A (en) * 1971-01-08 1972-06-06 American Seating Co Row folding seating structure
DE2935440A1 (de) * 1979-09-01 1981-03-19 Telekon GmbH, 5000 Köln Antrieb fuer eine teleskoptribuene

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998002628A1 (en) * 1996-07-15 1998-01-22 Charles Thomas Lyons A combined stairway and lift installation, and a retractable stairway
US6050366A (en) * 1996-07-15 2000-04-18 Hydraulic Technical Services (Consultants) Ltd. Combined stairway and lift installation and a retractable stairway
US6598351B2 (en) * 2001-07-16 2003-07-29 Stageright Corporation Telescopic seating riser assembly

Also Published As

Publication number Publication date
DE3881642D1 (de) 1993-07-15
JPH0175545U (de) 1989-05-22
EP0316182B1 (de) 1993-06-09
JPH0432445Y2 (de) 1992-08-04
DE3881642T2 (de) 1993-09-23

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