• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An snow vehicle, comprising a frame (1 02, 202), and a track operatively connected to the frame (1 02, 202) for moving the snow vehicle on snow, the track comprising a track (1 10, 210) and a slide frame (216) for sliding the track, the snow vehicle further comprising a suspension structure (120) for damping impacts on the frame of the snowmobile, the suspension structure (120) comprising one or more suspension means (128). The suspension means (128) is at least partially arranged in the area between the track (110) and the frame (102).
    公开号:FI20197036A1
    申请号:FI20197036
    申请日:2019-02-24
    公开日:2020-08-25
    发明作者:Marko Peltomaa
    申请人:Snowsus Oy；
    IPC主号:
    专利说明:

    SPRING VEHICLE SUSPENSION ARRANGEMENTS
    FIELD OF THE INVENTION The present invention relates to the suspension of a track of a snowmobile, such as a snowmobile or a snowmobile.
    BACKGROUND A snowmobile is a snowmobile vehicle. It is controlled by turning the handlebar, which turns the ski or pair of skis at the front of the sled.
    The sled can be driven on uneven snow at high speeds, emphasizing the importance of the sled suspension. The suspension is typically implemented by suspending the front and rear ends of the carriage with separate suspension solutions.
    There are several disadvantages associated with known solutions for suspension of a sled track. Suspension solutions, for example, are very susceptible to breakage, heavy, and suspension distances are relatively limited.
    BRIEF DESCRIPTION It is an object of the invention to provide a solution for at least partially eliminating the above-mentioned problems. The object is achieved by an invention which is the subject of an independent claim. Preferred embodiments are described in the dependent claims.
    The invention achieves significant advantages in suspension durability. In addition, the number of parts used for the suspension of the carriage and thus the weight of the carriage can be reduced. Furthermore, the travel of the carriage suspension can be increased, thus providing better suspension in relation to known solutions.
    FIGURES N The invention and its preferred embodiments are shown in the following figures, in which - Figure 1 shows a snowmobile and a suspension arrangement according to embodiments arranged in connection therewith; Fig. 2 illustrates a suspension arrangement seen from the side; and S Figure 3 illustrates rotation of the support arm track. R
    DETAILED DESCRIPTION The embodiments relate to the suspension of a snowmobile chassis.
    A snowmobile here means a snowmobile, a snowmobile or a similar vehicle moving on snow by means of a track.
    In the following, for the sake of simplicity, reference will be made in this description to a snowmobile, but the embodiments are equally suitable for other vehicles driven by a track.
    Thus, the embodiments relate in particular to the suspension or shock absorption of a snowmobile track.
    The most preferred embodiments are in the suspension of the so-called front stand of the track, but are also suitable for the suspension of the rear stand of the track.
    According to embodiments, the suspension is implemented such that suspension means, such as shock absorbers and / or coil springs, are arranged above the track so that they are at least partially in the area between the track and the snowmobile body.
    Preferably, the suspension means are located entirely in the area between the track and the frame in the so-called frame tunnel.
    In other embodiments, for example, the upper end of the suspension means may be attached above the frame structure.
    Figure 1 shows a solution according to an embodiment of the invention.
    The figure shows a snowmobile 100 having a carriage guide means at the front end of the body 102, such as a handlebar 104 and a pair of pivotable ski pairs 106. The front end preferably also includes a damping arrangement 108 for damping impacts on the front end.
    The damping arrangement 108 may comprise one or more springs and / or shock absorbers.
    The snowmobile also comprises a track 110, which track is arranged to rotate around two or more wheels 112, 114.
    The front end wheel 112 is preferably a traction wheel, a so-called traction wheel, the power generation of which can be provided, for example, by an internal combustion or electric motor.
    The snowmobile also comprises a sliding frame, against the lower surface of which the track 110 can slide A from the upper surface of the section against the ground. = According to embodiments, the snowmobile comprises a suspension arrangement for damping shocks in the area of the snowmobile track.
    The suspension arrangement may comprise one or more suspension structures 120, 130. Preferably, the suspension arrangement comprises two suspension structures, a first / front suspension structure 120 and a second / rear suspension structure 130. The front and rear suspension structures may preferably be substantially similar. - N. sia.
    The suspension structure comprises a pair of support arms, i.e. a first support arm 122A and a second support arm 122B, which are arranged side by side on different sides of the snowmobile. The support arms are fixed or constant in length, so that their length does not change while driving. The support arms may be made of metal, for example, or may be of some durable composite material.
    The support arms 122A, 122B are fixed at their upper end relative to the snowmobile frame 102, and at their lower end the support arms are fixed to the slide frame. The attachment of the support arm 122A to both the carriage body and the sliding frame is a rotatable attachment, i.e. the support arm 122A can rotate around its attachment points. The attachment to the sliding frame can be made, for example, by means of a bolt, a jig and a nut. Attachment to the body 102, in turn, can be accomplished, for example, by means of a shaft 124 passing through the body and extending to both sides of the body, a bushing surrounding the shaft, and nuts.
    The suspension structure thus comprises a pair of support arms, the support arms of the support arm pair being arranged in parallel on both sides of the chassis. Preferably, the attachment points of the support arms of the pair of support arms are at the same location on both sides of the sliding frame in the longitudinal direction of the sliding frame, and accordingly the attachment points of the support arms in the frame are at the same point on both sides of the frame.
    The attachment point on the frame side of the support arms is preferably as close as possible to the axis of rotation of the traction sheave, whereby the best possible track tension can be ensured. In particular, the point of attachment of the support arm is as close as possible to the vertical passing through the central axis of the traction sheave. Preferably the attachment point is at said vertical, but preferably at a distance of less than 10 cm, and even more preferably at a distance of less than 5 cm.
    The support arms are elongated bars, but may not be completely> straight. In practice, the track 110, for example, is slightly wider than the slide frame, whereby the support arm 122A has to be structured in such a way that it N is able to rotate the part of the track above the slide frame. Starting from the attachment point to the sliding frame, the support arm may initially extend a certain distance N upwards, then include a section extending outwards E and / or upwards towards the side of the carriage, and then an inwardly facing section © before attachment to the carriage body.
    Fig. 1 also shows a crossbar 126 arranged between the support arms 122A and 122B above the track. The crossbar 126 is fixedly attached to the N support arms, for example by welding, so that the support arms and the crossbar form a integrally rotating fixed entity.
    According to embodiments, a suspension element 128, which may comprise a shock absorber and / or a coil spring, is attached at its lower end to said crossbar 126. The suspension means is rotatably attached to the crossbar but so as not to move
    At its upper end, the suspension means is rotatably mounted relative to the frame of the snowmobile. In one embodiment, the attachment of the upper end of the suspension means to the carriage body is implemented such that the suspension means is fixedly attached to a tube which can rotate relative to an axis disposed therein, which shaft is in turn fixed to the carriage body.
    The rear suspension structure 130 is preferably similar in principle to the front suspension structure 120. Accordingly, the rear suspension structure also includes support arms attached to the carriage frame and the sliding frame. A crossbar is arranged between the support arms and the suspension means is arranged between the crossbar and the carriage body.
    In one embodiment, the first suspension structure 120 and the second suspension structure 130 are mechanically connected to each other, whereby interoperability of the suspension structures can be ensured. The mechanical connection can be made, for example, by arranging a fixed or detachably fixed side support arm between the support arms on the same side of the carriage. The side support arm is preferably arranged so that the front end of the side support arm carriage is attached slightly higher than the rear end of the side support arm carriage.
    Thus, a preferred embodiment of the invention shown in Figure 1 is characterized in that the suspension means 128 are located in the area or space between the track 110 and the carriage body 102. The suspension means are thus located vertically in the area above the track and below the frame. Preferably, the suspension means are arranged in a so-called frame tunnel of the carriage.
    N Although it is shown in Fig. 1 that the suspension means are located in the preferred between the track and the frame, it is also possible that the suspension means is partially located also above the frame if there is no space below the frame to place the suspension means in its entirety there. In this case, the body may have a through hole / passage from which the suspension means can fit through the body. However, even in this S embodiment, mainly the suspension means is located below the body. Thus, at least half of the longitudinal direction of the suspension means is located below the upper surface N of the body.
    Figure 2 is a side view of the suspension arrangement. Figure 2 shows a traction sheave 212, a rear wheel 214 and a track 210 movable relative thereto. Figure 2 also illustrates a slide frame 216 below which the track 210 can slide. The first support arm 222A of the front suspension structure is attached at its upper end to the carriage body 202 and at its lower end to the sliding body. Both attachments are rotatable attachments, and preferably the attachment of the lower end to the slide body is fixed so that the support arm 222A cannot move in the longitudinal direction of the slide body 216. The first support arm 232A belonging to the rear suspension structure, in turn, can be slidably attached to the sliding frame 216. This means that a longitudinal groove of the sliding body can be arranged in the sliding body, in which the end of the support arm 232A can move. This ensures unsupported tension when the track moves vertically during travel in flexible situations.
    Figure 2 shows a suspension means 228 belonging to the first suspension structure. As can be seen, the suspension means is arranged at an angle to the support arm when the snowmobile is at rest. Preferably, the angle is more than 90 degrees, for example between 90 and 150 degrees relative to the upper end of the support arm. NOT compared to Figure 2, the upper end of the suspension means may be located even more to the right. This ensures that when the sled is driven to the left in Fig. 2 and the track collides with a bump in the terrain, the suspension means is located substantially perpendicular to the surface of the bump and thus allows maximum damping.
    At the rear end of the carriage track, the suspension means 238 is in turn inclined in the opposite direction to the front suspension means 228. The angle is preferably less than 90 degrees, for example between 30 and 90 degrees.
    Figure 3 illustrates the installation and design of the support arm 322A. The figure shows the upper side of the track 310 and it can be seen how the mounting point of the support arm mounted on the sliding frame N 316 rests on the outer edge of the track 310. so that a rotating portion of the track is formed on the support arm. The rotating N portion may be formed of piecewise linear portions or alternatively E is curved. © The rotatable attachment of the support arm to the opening in the sliding frame can be realized, for example, by means of a bolt 340, a bushing, 342, a washer 344 and a nut 346. 2 The impacts on the chassis of the snowmobile according to the embodiments are damped by receiving the impacts with one or more snowmobiles.
    with a suspension structure attached to the frame and the sliding frame of the chassis, the oscillation of the suspension structures in the event of an impact being damped by a suspension means operatively connected to the suspension structure. In practice, therefore, when driving a snowmobile, the fixed support arms of the suspension structure can rotate with respect to the attachment points of the upper end, whereby the track / track can rise towards the frame of the snowmobile.
    The invention achieves several advantages. One significant advantage is that the unsprung mass of the snowmobile is significantly reduced, typically up to about 20 kg, relative to the suspension structures implemented within the area delimited by the track. It is clear that the solution according to the invention thus achieves cost advantages over known solutions, because there are fewer parts and maintenance items required. Lighter pulp also saves fuel.
    By means of the invention, significant advantages in the durability of the suspension can also be achieved. A particularly break-prone area in snowmobiles is the breakage of the so-called front stand, i.e. the front end of the track. The reason for this is that the front suspension means is typically oblique to the direction of impact. By means of the invention, the suspension means can be placed in such a position that it better receives shocks in its natural operating position, i.e. the impact is directed in the longitudinal direction of the linear movement of the substantially linear suspension means. The invention can also avoid broken links or lever arms in the implementation of the suspension.
    The invention also achieves the advantage that the actual suspension distance, i.e. the range of motion of the rear end of the sled, is extended by up to 15-20 cm. This is due to the fact that the track can be kept very low, whereby the distance between the upper surface and the lower surface of the roller is significantly shorter than in solutions where the suspension is arranged inside the track. Because the track is low, it can be allowed to travel more vertically, which naturally results in better suspension.
    By means of the invention, the holding surface of the track also increases, because due to the low N structure, the track can be extended further in the direction E of the length E of the snowmobile.
    © The invention makes it easier to adjust the height and damping force of the suspension, because the suspension elements are easy to handle when they are above 2 tracks. In one embodiment, the support arms are provided with a plurality of N attachment points to the frame, whereby it is easy to adjust the position of the support arms and thus the suspension.
    It is clear that as technology advances, the inventive idea can be implemented in different ways. The invention and its embodiments are not limited to the above embodiments but may vary within the scope of the claims. oO O OF
    N <Q + OF
    I a a O O O
    No. O OF
    权利要求:
    Claims (10)
    [1]
    A snow vehicle, comprising a frame (102, 202) and a belt system operatively connected to the frame (102, 202) for moving the snow vehicle on snow, the belt system comprising a drive belt (110, 210) and a sliding frame (216) for sliding the drive belt, the snow vehicle further comprising a suspension structure (120) for damping shocks on the snowmobile belt system, the suspension structure (120) comprising one or more suspension means (128), the suspension means (128) being at least partially arranged in the area between the drive belt (110) and the frame (102) and the suspension structure (120) comprises a first support arm (122A) arranged on the first side of the snow vehicle and a second support arm (122B) arranged on the second side of the snow vehicle, the first support arm ( 122A) and the second support arm (122B) attached to the sliding frame at their other ends, characterized in that the first support arm (122A) and the second support arm (122B) are rotatably attached at their first ends to the frame one of the snow vehicle (102), and the first end of the suspension means (128) is arranged rotatably relative to the frame of the snow vehicle (102), and that the suspension structure (120) comprises a cross bar (126) fixedly attached to the first the support arm (122A) and the second support arm (122B) and that the other end of the suspension means (128) is attached to the crossbar (126) so that the suspension means (128) is arranged between the crossbar (126) and the frame (102).
    [2]
    Snowmobile according to claim 1, characterized in that the first support arm (122A) and the second support arm (122B) are at least partially variable in the direction between the attachment points of the frame and the sliding frame (216) to enable the circumference of the drive belt (110, 210).
    [3]
    Snow vehicle according to any one of the preceding claims, characterized in that the spring direction of the spring member (128) is arranged at an angle of 30 to 0 150 degrees with respect to the longitudinal direction of the support arm (122A) attached E to the spring member (128).
    [4]
    Snow vehicle according to one of the preceding claims, characterized in that the snow vehicle comprises two suspension structures (120, 130) which are arranged in succession relative to one another in the longitudinal direction of the snow vehicle.
    [5]
    Snow vehicle according to any one of the preceding claims, characterized in that the snow vehicle comprises a traction wheel (112) for moving the drive belt (110), and that the attachment points for the first (122A) and second support arms (122B) are substantially in line with the axis of rotation of the traction wheel (112).
    [6]
    Snow vehicle according to any one of the preceding claims, characterized in that the snow vehicle comprises a side support arm for mechanical coupling of the first suspension structure (120) and the second suspension structure (130) to effect their simultaneous movement.
    O
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    类似技术:
    公开号 | 公开日 | 专利标题
    US3822755A|1974-07-09|Kit for converting conventional motorcycle into snowmobile
    US7198126B2|2007-04-03|Front suspension for recreational vehicle
    US20040007914A1|2004-01-15|Snowmobile slide rail system
    US7556276B1|2009-07-07|Bicycle rear wheel suspension chassis
    US3773126A|1973-11-20|Snowmobile suspension system
    US8839721B2|2014-09-23|Bogie for guide rail type vehicle
    US9162731B2|2015-10-20|Snowmobile
    CA2706678C|2016-06-21|Vehicle suspension linkage
    US7845448B2|2010-12-07|Tracked vehicle, especially a snow scooter
    US11097793B2|2021-08-24|Rear track assembly for a vehicle
    US8016064B2|2011-09-13|Snowmobile assembly
    US6450280B1|2002-09-17|Snowmobile suspension system
    US3623564A|1971-11-30|Snow vehicle front suspension
    FI20197036A1|2020-08-25|Suspension arrangement of snow vehicle
    US20090008890A1|2009-01-08|Suspension system for an all-terrain vehicle
    USRE28423E|1975-05-20|Snow vehicle front suspension
    WO2008041879A1|2008-04-10|Tracked cross-country motor vehicle
    KR100953322B1|2010-04-20|Suspension of coupled torsion beam axle type
    US3792743A|1974-02-19|Suspension system for endless track vehicle
    SU1745604A1|1992-07-07|Shock absorbing track adjusting mechanism of transportation vehicle
    SU895785A1|1982-01-07|Endless track vehicle guiding wheel suspension assembly
    US20090039610A1|2009-02-12|Suspension for a tracked vehicle
    HU200299B|1990-05-28|Bogie for railway vehicles
    SU1054175A1|1983-11-15|Travelling gear of endless-track vehicle
    SU962085A1|1982-09-30|Torsion-spring suspension of guide wheel of endless-track vehicle
    同族专利:
    公开号 | 公开日
    CA3126343A1|2020-08-27|
    EP3927604A1|2021-12-29|
    FI128640B|2020-09-15|
    WO2020169878A1|2020-08-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2657645B2|1987-03-04|1997-09-24|ヤマハ発動機株式会社|Crawler belt of small snowmobile and supporting structure of its drive unit|
    US8016064B2|2009-11-23|2011-09-13|Lance Lucarelli|Snowmobile assembly|
    US8479860B1|2011-03-30|2013-07-09|LRET, Inc.|All terrain endless track vehicle|
    法律状态:
    2020-09-15| FG| Patent granted|Ref document number: 128640 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20197036A|FI128640B|2019-02-24|2019-02-24|Suspension arrangement of snow vehicle|FI20197036A| FI128640B|2019-02-24|2019-02-24|Suspension arrangement of snow vehicle|
    PCT/FI2020/050081| WO2020169878A1|2019-02-24|2020-02-10|Suspension arrangement of snow vehicle|
    EP20759565.3A| EP3927604A1|2019-02-24|2020-02-10|Suspension arrangement of snow vehicle|
    CA3126343A| CA3126343A1|2019-02-24|2020-02-10|Suspension arrangement of snow vehicle|
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