Movable or removable closures – Mounted for multidirectional or oblique movement – Sequential translation and swinging
Patent
1991-09-26
1994-09-20
Cuomo, Peter M.
Movable or removable closures
Mounted for multidirectional or oblique movement
Sequential translation and swinging
49130, 49210, 49211, E05F 702
Patent
active
053477570
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a device for opening and closing a door in railway and bus cars.
It is well known that the operation of doors or leaves in railway and bus cars has been and is still of considerable interest for the manufacturers and the users of such vehicles: the system and the associated device for opening and closing the doors of said cars has to meet both requirements of practicability and efficiency, and safety requirements for ensuring a proper operation of the device and the passengers' safety.
The object of the present invention is to provide a safe and practical device for door opening and closing in railway and bus cars, adapted to stand the inner and outer stresses to which the car is generally subjected.
FR-A-2,310,235 discloses a device for opening and closing a door, particularly in railway cars, in which said door is ejected outside of the frame by suitable arms, and in this position it is displaceable longitudinally with respect to the frame on suitable guide means provided on and between the frame and the door. The arms therefore are only ejection means, which rotate partially with respect to their rotation point; no rotation occurs at the free ends of these arms, but only the aforementioned translation movement of the door with respect to the frame.
With the subject device it is proposed to impart the door an ejection or rotational movement in the opening cycle, followed by a translation movement that places the door in a stable position parallel to the side frame housing the doorway.
The closing cycle is obviously the reverse of the above mentioned opening one.
The subject device substantially comprises: fixed structure and to the door in order to accomplish the initial separation from and the final approach to the doorway of said door; the upper and lower ejection drive assemblies substantially comprising respective ejection drive arms joined at their base end, at the axis of rotation 01, 06, to respective fixed hinge members, and at their other free end to suitable supports secured to the door; said hinge members allowing for an angular rotation movement of the arms which is enough to accomplish the ejection of the door; the upper and lower ejection drive assemblies being connected together by a suitable torsion bar integral with the shafts, the bar synchronizing the movements of rotation of both assemblies; at their other end or free end said ejection arms being engaged by a clamp carrying a pivoted support with an associated slide bush; characterized in that the upper ejection drive assembly and the translation guide have variable centers; the hinge members are mounted on respective brackets through a curved slot fastening arrangement which allows the change of their angular attitude in such a way as to align the centers of rotation of the hinge members with the axis of rotation 01, 06 of said arms, said brackets secured to the structure that carries the doorway forming a first and a third linking points between the device and the structure; the drive means for said upper and lower ejection arms comprising at least a rack driven by a dedicated fluid pressure small cylinder, e.g. a hydraulic or pneumatic one, the rack engaging at least one gear wheel or gearing which is keyed to the shaft of rotation of the above mentioned ejection arms; the clamp carrying the pivoted support with the associated slide bush being engaged with respective upper and lower slide bars, at 02, that are integral with the door; such engagement coupling forming a first and a third back up points for the door; the end portion of the upper ejection arm carrying a support acting as a half hinge at 03, into which an additional support is fitted, a circular cross section slide bar fastened to said additional support being connected bridgewise to a further bush-pivot support, at 05, a sleeve provided with slide bushes being slidably mounted on said circular cross section bar, such sleeve being joined to the door through a pivoting between the relevant movable axis and the relevant bracket, said bracket
REFERENCES:
patent: 2834067 (1958-05-01), Beauchamp
patent: 4337596 (1982-07-01), Kern et al.
patent: 4617756 (1986-10-01), Dilcher
patent: 4702514 (1987-10-01), Perry
patent: 4845890 (1989-07-01), Terada et al.
patent: 4942694 (1990-07-01), Simoncelli
Cuomo Peter M.
O.C.L.A.P. S.r.l.
Redman Jerry
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