Land vehicles – Wheeled – Occupant propelled type
Patent
1982-01-04
1983-11-29
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Occupant propelled type
2807631, B62H 102
Patent
active
044177461
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a kickstand device for a motorcycle device is disclosed. The device includes a kickstand to the frame comprising a kickstand and means for articulating the kickstand of the motorcycle so that the kickstand is swivelable against the action of at least one spring from a swung-in travel position through a dead center position of the springs into a swung-out parking position with the free end of the kickstand, in the parking position, being displaceable upward relative to the motorcycle against the force of the springs under the influence of the load imposed by the motorcycle.
The "V 1000 I-CONVERT" motorcycle built by MOTO GUZZI is equipped with a kickstand device of this type. In this motorcycle, the end segment of the kickstand at the articulation is designed as a bent bearing pin, received by a rubber sleeve. The latter sleeve is surrounded by a mounting yoke attached to the motorcycle frame. When the kickstand abuts the ground in the parking position, the lengthwise center plane of the motorcycle is swiveled slightly laterally under the influence of its weight, within the scope of the elasticity of the rubber sleeve. In this position, the kickstand is then immobilized by two locking pins projecting outward from the motorcycle frame, the locking pins cooperating with a projection extending radially from the bearing pin of the kickstand. When the motorcycle is raised to the travel position, on the other hand, the free end segment of the kickstand is displaced toward the motorcycle frame by the force of the extension spring as well as the resilient effect of the rubber sleeve, pretensioned in the parking position, thus eliminating the immobilization of the kickstand, whose free end is above the ground at this time. Finally, the kickstand must be swung into the travel position by muscular force. In order to prevent the rider from forgetting to do this, since riding with the kickstand extended could result in a dangerous situation, the motorcycle is equipped with a device which prevents the engine from starting with the kickstand swung out. However, this device is relatively complex in design and is therefore expensive to manufacture.
The kickstand device disclosed in German AS 24 53 870 is provided at its free end segment with an auxiliary element of a different type, which extends beyond the free end of the kickstand in the travel position but is swung out laterally in the parking position under the influence of the weight of the motorcycle. When the rider forgets to swing in the kickstand when starting the motorcycle, this device is intended to cause the auxiliary element to rub along the ground and to swing in the kickstand as a result of the frictional contact which occurs. However, the mounting of the different auxiliary elements requires a relatively high construction cost, thus making this device expensive to produce. Furthermore, the auxiliary element made of a rubber block, can become brittle and thus useless after being used for a long time, as a result of the aging of the rubber. However, the rubber block at least tends to develop residual deformation when the kickstand is left in the parking position for a long time, or can wear away after extensive use, thereby having a deleterious effect on its function.
Hence, the goal of the invention is to provide a kickstand device of the aforementioned type with minimum manufacturing and parts cost, such that the kickstand swings in automatically when the motorcycle starts if the rider forgets to swing in the kickstand himself.
The goal of the invention is achieved by virtue of the fact that the kickstand is in contact with the ground in the lower extreme position of the range of angles when the motorcycle is standing vertical. The design of the range of angles for the kickstand according to the invention relative to the motorcycle frame causes the kickstand always to be pulled toward the motorcycle frame by spring force, so that when the motorcycle starts, the frictional contact with the ground causes the kickstand to rub along the
REFERENCES:
patent: 293284 (1884-02-01), Stevens
patent: 3345681 (1967-10-01), Pletscher
patent: 3918743 (1975-11-01), Sato et al.
patent: 4073505 (1978-02-01), Yamazaki
patent: 4241933 (1980-12-01), Gratza et al.
Bayerische Motoren Werke AG
Peters Jr. Joseph F.
Rice Kenneth R.
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