Patent ID: 6113117
Filing Date: 2000-09-05
Classification: A61G,B60B,B60Y

Abstract:
An auxiliary steering gear for a carrier incorporating a caster wheel device comprising;a carrier body (12, 70, 100) incorporating a main wheel (14, 76),a caster wheel device (16, 74) including a sub wheel (16a, 74a) and a sub wheel support device which essentially connects said sub wheel (16a, 74a) to said carrier body (12, 70, 100) while supporting said sub wheel (16a, 74a) so as to be freely rotatable about a horizontal axle (16b, 74b) and a vertical shaft (16c, 74c),an inclining device (18, 78) for enabling inclining of said sub wheel (16a, 74a) in a transverse direction with respect to a direction of travel of said carrier body (12, 70, 100), anda remote operation device (20, 46, 52, 54, 64, 94, 96, 116, 118) for remote operation of said inclining device (18, 78),wherein said inclining device (18, 78) comprises an incline support device (36, 86) for inclinably connecting said caster wheel device (16, 74) to said carrier body (12, 70, 100) by means of an incline support shaft (34, 86a) which extends in a direction of travel of said carrier body (12, 70, 100), and a gear device (38) for transmitting an incline drive force to incline said caster wheel device (16, 74), andsaid gear device (38) is set with a large gear ratio for reducing a reaction force due to external forces acting on said sub wheel (16a, 74a), andsaid remote operation device (20, 46, 52, 54, 64, 94, 96, 116, 118) is for remotely driving said gear device (38).