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公开(公告)号：US3913694A
公开(公告)日：1975-10-21
申请号：US45647874
申请日：1974-04-01
Applicant: BRUNSWICK CORP
Inventor： FORSGREN LYLE M
CPC classification number: B62D55/10 , B62D55/07 , B62M27/02 , B62M2027/026
Abstract: A slide-rail suspension system for the drive track of a snowmobile is coupled to the chassis by a linking arm unit pivotally attached to a forward anchor axle to follow an arc prescribed by the linking arm unit. A pair of rear spring and shock absorbing units, each includes a bell crank pivotally connected to an aft portion of the slide rail unit with a relatively long arm connected to a fixed rear axle by a slot coupling. The short arms of the bell crank unit are connected by a piston-cylinder shock absorber to the slide rail unit. A preload coil spring encircles the shock absorber. A bump engagement initiates a sliding movement of the long bell crank with the resulting increase in the shock and spring rate to increase the impact absorbing ability. The short crank arm pivots with the force axis becoming perpendicular to shock absorber to increase the spring and shock rates. A front shock assembly includes a bell-crank and shock absorber unit and a pair of separate torsion spring means which also create a variable shock rate and spring rate. The long arm of the bell crank is connected by a sliding coupling to the front pivot axle. The short arm extends upwardly and is coupled to a shock absorber which is secured at the opposite end to the front end of the slide rail unit. The torsion springs are wound about the front axle with a lower spring arm slidably engaging the slide rail unit and an upper spring arm engaging the chassis.
Abstract translation: 用于雪地车的驱动轨道的滑轨悬挂系统通过可枢转地附接到前锚轴的连接臂单元联接到底架，以跟随由连接臂单元规定的弧。 一对后弹簧和减震单元，每个都包括一个可以连接到滑轨单元的后部的钟形曲柄，一个较长的臂通过一个槽连接件连接到固定的后轴上。 钟形曲柄单元的短臂通过活塞 - 气缸减震器连接到滑轨单元。 预紧螺旋弹簧围绕减震器。 凸起接合引起长钟形曲柄的滑动运动，从而提高冲击和弹簧弹性，以增加冲击吸收能力。 短曲臂枢转，力轴垂直于减震器，以增加弹簧和冲击速率。 前冲击组件包括钟形曲柄和减震器单元以及一对单独的扭转弹簧装置，其也产生可变的冲击速率和弹簧刚度。 钟形曲柄的长臂通过滑动联轴器连接到前枢轴。 短臂向上延伸并且联接到减震器，该减震器在相对端固定在滑轨单元的前端。 扭转弹簧围绕前轴缠绕，下弹簧臂可滑动地接合滑轨单元和接合底盘的上弹簧臂。
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公开(公告)号：CA1039777A
公开(公告)日：1978-10-03
申请号：CA234510
申请日：1975-09-02
Applicant: BRUNSWICK CORP
Inventor： FORSGREN LYLE M
Abstract: GROUND ENGAGING DRIVE TRACK APPARATUS FOR SNOWMOBILES AND THE LIKE A snowmobile drive track assembly includes an endless belt unit having a central drive belt section and laterally spaced belt sections interconnected by flat, spring-steel track bars. The several sections include longitudinally aligned groundengaging drive ribs holding the bars in spaced relation to the ground. The bars are molded into the outer surface of the ground engaging side of the belt immediately adjacent the wall of the depending snow engaging ribs. The bar extends essentially completely throughout the width of the three sections with the undersurface completely exposed and drive lugs provided on the backside of the central section. The exposure of the bars on the outer side of the track unit essentially throughout the complete width of the track unit significantly increases the heat dissipating characteristics of the belt unit. The belt is suitably reinforced by embedding of nylon fabric and longitudinal cords. The track bars are suitably treated, prior to molding to provide adherence to the interconnecting rubber which may, however, be readily loosened for removal of a bar by use of a suitable solvent such as methol-ethyl ketone.
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公开(公告)号：CA1026807A
公开(公告)日：1978-02-21
申请号：CA223480
申请日：1975-04-01
Applicant: BRUNSWICK CORP
Inventor： FORSGREN LYLE M
Abstract: A slide-rail suspension system for the drive track of a snowmobile is coupled to the chassis by a linking arm unit pivotally attached to a forward anchor axle to follow an arc prescribed by the linking arm unit. A pair of rear spring and shock absorbing units, each includes a bell crank pivotally connected to an aft portion of the slide rail unit with a relatively long arm connected to a fixed rear axle by a slot coupling. The short arms of the bell crank unit are connected by a piston-cylinder shock absorber to the slide rail unit. A preload coil spring encircles the shock absorber. A bump engagement initiates a sliding movement of the long bell crank with the resulting increase in the shock and spring rate to increase the impact absorbing ability. The short crank arm pivots with the force axis becoming perpendicular to shock absorber to increase the spring and shock rates. A front shock assembly includes a bell-crank and shock absorber unit and a pair of separate torsion spring means which also create a variable shock rate and spring rate. The long arm of the bell crank is connected by a sliding coupling to the front pivot axle. The short arm extends upwardly and is coupled to a shock absorber which is secured at the opposite end to the front end of the slide rail unit. The torsion springs are wound about the front axle with a lower spring arm slidably engaging the slide rail unit and an upper spring arm engaging the chassis.
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