EP0242339B1 - A door safety device for a means of public transport - Google Patents

A door safety device for a means of public transport Download PDF

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Publication number
EP0242339B1
EP0242339B1 EP87830144A EP87830144A EP0242339B1 EP 0242339 B1 EP0242339 B1 EP 0242339B1 EP 87830144 A EP87830144 A EP 87830144A EP 87830144 A EP87830144 A EP 87830144A EP 0242339 B1 EP0242339 B1 EP 0242339B1
Authority
EP
European Patent Office
Prior art keywords
door
safety device
track
lever
peg
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.)
Expired - Lifetime
Application number
EP87830144A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0242339A3 (en
EP0242339A2 (en
Inventor
Massimo Sessa
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.)
NORD BUS COMPONENTS Srl
Original Assignee
NORD BUS COMPONENTS Srl
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 NORD BUS COMPONENTS Srl filed Critical NORD BUS COMPONENTS Srl
Priority to AT87830144T priority Critical patent/ATE54193T1/de
Publication of EP0242339A2 publication Critical patent/EP0242339A2/en
Publication of EP0242339A3 publication Critical patent/EP0242339A3/en
Application granted granted Critical
Publication of EP0242339B1 publication Critical patent/EP0242339B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/51—Application of doors, windows, wings or fittings thereof for vehicles for railway cars or mass transit vehicles

Definitions

  • This invention relates to a safety device effective to inhibit opening of a door on a municipal means of transport under thrust forces acting in an inside-out direction and being specifically intended for application to a door of the so-called inward rototranslation type wherein a door wing has a top-mounted peg guided for sliding movement in a track overlying the door.
  • Folding doors which have long been known and utilized, usually comprise four door wings each.
  • the two side wings are pivoted to the structure of the vehicle at their outer edges and driven rotatively by an air-operable actuator.
  • the two middle wings are instead individually pivoted to an adjoining one of the door side wings and dragged operatively thereby; a peg provided mounted on the middle wing, close to its free edge (i.e. the edge confronting the other middle wing), is guided slidingly in a straight track overlying the door.
  • a peg provided mounted on the middle wing, close to its free edge (i.e. the edge confronting the other middle wing), is guided slidingly in a straight track overlying the door.
  • Inward rototranslation doors as more recently introduced and generally preferred on account of their being simpler and tighter fitting, usually comprise two wings which are unconnected pivotally to the vehicle structure and connected instead to an upright drive rod lying adjacently the door through the intermediary of upper and lower arms which are rotatively rigid with the rod and connected pivotally to the door wing at a middle region thereof; a peg attached to each door wing, close to its edge confronting the other door wing, is guided slidingly in a straight track overlying the door.
  • each door wing confronting the other door wing is bound to span the door gap during its opening and closing movements.
  • Safety regulations provide, inter alia, for the door to be restrained against opening when subjected to a thrust by the passengers from the inside out; this to avoid that passengers on an overcrowded bus may fall outwards.
  • outward opening folding doors have a kinematics whereby an outwardly directed thrust force will result in the door being opened; due to difficulties in providing such doors with opening-opposing features, the latter door type has been virtually abandoned.
  • Inward rototranslation doors have kinematics whereby a thrust force applied in the outward direction-may cause the door to open; accordingly, such doors can only be used on condition that they are provided with a suitable safety device of some sort.
  • a mechanical lock which acts directly on the pneumatic actuation system for the drive rod; the lock is operated electromagnetically, but more frequently pneumatically, each time that the door is closed, and is arranged to trip on in the event of an outward thrust force acting on the door to inhibit operation of the drive rod.
  • the lock is also arranged to be in a locked condition while at rest, and require application of (either electric or pneumatic) power to bring it to a released condition; this in order to ensure that the door locking device will retain its effectiveness even in the event of the vehicle ancillary systems going out of order.
  • a safety device as indicated being characterized in that it comprises an outwardly yielding rack section, located at the peg with the door in the closed condition.
  • the reference numeral 1 denotes generally a door of the so-called inward rototranslation type particularly intended for use on an urban or suburban means of public transport, such as a bus, tramcar or trolley bus.
  • the door 1 comprises two side-by-side door wings 2.
  • the two door wings 2 are symmetrical about their mating line and provided with ancillary members which are also symmetrical and symmetrically positioned; accordingly, reference will be made in the ensuing description to just one of the door wings 2, it being understood that like considerations would apply symmetrically to the other of the door wings.
  • corresponding items of the two door wings carry the same reference numerals.
  • the door wing 2 which is glazed as at 3, is linked to a drive rod 4 by means of an upper arm 5 and a lower arm (not shown in the drawings).
  • the arm 5 is connected, at one end, rigidly to the rod 4 for rotation therewith, and at the other end is mounted pivotally on a pin 6 carried by a bracket 7 attached to the door wing 2.
  • the lower arm not shown, is attached in quite a similar manner to the rod 4 and the wing 2.
  • the door wing 2 is also provided, at a location close to its edge 8 confronting the other door wing 2, with a peg 9 mounted on a bracket 10 affixed to the wing 2 and jutting out upwardly therefrom.
  • the peg 9 is guided slidingly along a straight track 11 overlying the door 1.
  • the track 11 has a substantially inverted U-like cross-sectional shape including two vertical walls 12 and 13 which lie parallel to each other and are oppositely located to face the interior and exterior, respectively, and is secured below an eaves 14 made fast with the structure (not shown) of the vehicle.
  • the door 1 incorporates two safety devices, both comprehensively designated 15, one for each door wing 2.
  • the safety device 15 comprises a section 16 of the track 11 which is designed to yield in an outward direction.
  • the wall 13 of the track 11 is discontinued and replaced with a lever 17 journalled to the track 11 with the intermediary of a bracket 18 (common to both door wings 2) which is fast with the track 11.
  • the lever 17 is movable between a first position whereat it is substantially aligned to the wall 13 (normal operating position), and a second position whereat it is shifted outwards (on a thrust force being applied to the wing 2 from the inside out). Such positions would be defined by conventional travel limit detents, not shown in the drawings.
  • the wall 13 carries, at the location of the lever 17, an abutment surface or shoulder 19 facing outwards.
  • the safety device 15 comprises a spring 20 stretched between the wall 12 and the lever 17, within the track 11 itself but at such a location as not to interfere with the peg 9.
  • the spring 20 is selected to have appropriate elastic characteristics to allow the lever 17 to be shifted outwardly as the thrust force exerted on the wing 2 reaching a set danger value.
  • the peg 9 would be taken out of the track 11 against the shoulder 19, and any action tending to open the door 1 can effectively result in no movement of the wing 2 being thrusted upon.
  • FIGS 5 and 6 show, as a variation of the safety device 15, a safety device 15a; all the detail items of the device 15a which correspond to items already described in connection with the device 15 are designated by the same reference numerals and no further described herein.
  • the safety device 15a comprises a spring 21 overlying the eave 14, being stretched between a peg 22 fast with the eave 14 and a peg 23 fast with the lever 17 and led through an opening 24 in the eave 14.
  • a microswitch 25, mounted on the eave 14, is operated by a small arm 26 attached to the peg 23.
  • the spring 21 has quite similar elastic characteristics to those of the spring 20 in the device 15.
  • the microswitch 25 With the lever 17 shifted outwards by the thrust force acting on the wing 2, the microswitch 25 will complete an electric circuit (not shown), which results in the vehicle driver being warned of a locked door situation, e.g. by a light indicator on the dashboard panel being turned on. This will enable the driver to immediately detect a situation of piotential danger or at least irregular.
  • a safety device 15b Shown in Figure 7 as a further variation of the safety device 15 is a safety device 15b.
  • corresponding items to the items already discussed in connection with the safety device 15 are denoted with like reference numerals and no further described herein.
  • the safety device 15b comprises a cylinder-piston unit 27 having a body 28 attached rigidly to the eave 14 and a piston rod 29 connected, via a small connecting rod 30, to a peg 31 which is made fast with the lever 17 and passed through an opening 32 in the eave 14.
  • a fitting 33 formed on the body 28 of the cylinder-piston unit 27 is connected to the pressurized air system of the vehicle, such that the air pressure will hold the piston rod 29 in a retracted attitude; consequently, the lever 17 will be in its normal operating position and is shifted on the thrust force against the door wing 2 overcoming the pressure from the air in the cylinder-piston unit 27.
  • a spring 34 mounted within the cylinder-piston unit 27 is effective to shift the lever 17 (irrespective of whether a thrust force. is being applied to the door wing 2) in case failure of the pressurized air system results in the pressure within the cylinder-piston unit 27 being released.
  • a device according to this invention can fully achieve the object set forth.
  • this device affords both nearly absolute reliability in operation, and simple construction and straightforward operation ensuring long life and reliability.
  • the safety device of this invention remains deactivated during normal operation of the door, and only becomes operative where required.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Special Wing (AREA)
  • Vending Machines For Individual Products (AREA)
  • Elevator Door Apparatuses (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Manufacture Of Iron (AREA)
EP87830144A 1986-04-15 1987-04-13 A door safety device for a means of public transport Expired - Lifetime EP0242339B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87830144T ATE54193T1 (de) 1986-04-15 1987-04-13 Sicherheitsvorrichtung fuer tueren von oeffentlichen transportmitteln.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2008986 1986-04-15
IT20089/86A IT1191734B (it) 1986-04-15 1986-04-15 Dispositivo di sicurezza per una porta di un mezzo di trasporto pubblico

Publications (3)

Publication Number Publication Date
EP0242339A2 EP0242339A2 (en) 1987-10-21
EP0242339A3 EP0242339A3 (en) 1988-04-20
EP0242339B1 true EP0242339B1 (en) 1990-06-27

Family

ID=11163710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830144A Expired - Lifetime EP0242339B1 (en) 1986-04-15 1987-04-13 A door safety device for a means of public transport

Country Status (4)

Country Link
EP (1) EP0242339B1 (it)
AT (1) ATE54193T1 (it)
DE (1) DE3763440D1 (it)
IT (1) IT1191734B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2389617A (en) * 2002-06-12 2003-12-17 Special Needs Baths Ltd Door for easy access bath
CN103382796B (zh) * 2013-07-12 2015-09-02 河海大学 曲柄解锁式公共汽车安全逃生门
PT3460153T (pt) * 2017-09-22 2020-11-03 Masats Sa Sistema de fecho e de abertura de pelo menos uma folha de uma porta de vaivém para dentro
CN118025237B (zh) * 2023-10-20 2024-08-09 深圳市东木科技有限公司 一种防误开的轨道屏蔽门装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900785C (de) * 1949-06-15 1954-01-04 Ver Baubeschlag Gretsch Co Zwischen Dreharmen aufgehaengte Schwingtuer
US3462881A (en) * 1968-03-14 1969-08-26 Vapor Corp Slide-glide-plug door mechanism
DE1784760A1 (de) * 1968-09-14 1971-09-09 Wegmann & Co Antriebsvorrichtung fuer Tueren,insbesondere fuer Tueren mit zwei Schwenkfluegeln
HU191511B (en) * 1983-01-25 1987-02-27 Finomszerelvenygyar,Hu Double-acting door for vehicles

Also Published As

Publication number Publication date
IT1191734B (it) 1988-03-23
EP0242339A3 (en) 1988-04-20
DE3763440D1 (de) 1990-08-02
IT8620089A0 (it) 1986-04-15
EP0242339A2 (en) 1987-10-21
ATE54193T1 (de) 1990-07-15
IT8620089A1 (it) 1987-10-15

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