Auxiliary steering gear for carrier incorporating a caster wheel device
First Claim
1. 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).
1 Assignment
0 Petitions
Accused Products
Abstract
An auxiliary steering gear for a carrier comprising; a carrier body incorporating a main wheel, a caster wheel device including a sub wheel support device which connects a sub wheel to the carrier body while supporting the sub wheel so as to be freely rotatable about a horizontal axle and a vertical shaft, an inclining device for enabling inclining of the sub wheel in a transverse direction with respect to a direction of travel of the carrier body, and a remote operation device for remote operation of the inclining device, wherein the inclining device comprises an incline support device for inclinably connecting the caster wheel device to the carrier body by way of an incline support shaft which extends in the direction of travel of the carrier body, and a gear device for transmitting an incline drive force to incline the caster wheel device, and the gear device is set with a large gear ratio for reducing a reaction force due to external forces acting on the sub wheel, and the remote operation device is for remotely driving the gear device.
23 Citations
21 Claims
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1. An auxiliary steering gear for a carrier incorporating a caster wheel device comprising;
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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), and said remote operation device (20, 46, 52, 54, 64, 94, 96, 116,
118) is for remotely driving said gear device (38). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An auxiliary steering gear for a carrier incorporating a caster wheel device comprising;
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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) for remote operation of said inclining device (18,
78),wherein said sub wheel support device comprises a sub wheel support member (16d, 74d) for rotatably supporting said sub wheel (16a, 74a) via said horizontal axle (16b, 74b), and a vertical shaft bearing device having said vertical shaft (16c, 74c) with one essentially connected to said support member (16d, 74d) and the other essentially connected to said carrier body (12, 70,
100), and a bearing member (36b,
84) andsaid 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 way 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), and said incline support device (36,
86) comprises an extension member (36a) which is formed by extending one of the vertical shaft (16c, 74c) and the bearing member (36b,
84) of said vertical shaft bearing device essentially connected to said carrier body (12, 70,
100), and said extension member (36a) is inclinably connected to said carrier body (12, 70,
100), by means of said incline support shaft (34, 86a), andsaid gear device (38) comprises a sector gear (40) provided on the caster wheel device (16,
74) or the extension member (36a) thereof, and a pinion (42) provided on said carrier body (12, 70,
100) and engaged with said sector gear (40), andsaid remote operation device (20, 46, 52, 54, 64, 94,
96) is a device for rotational drive of said pinion (42).
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Specification