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WO1995017327A1 - Equipment for adjustment of distance between guiding skis of a motor sledge - Google Patents

Equipment for adjustment of distance between guiding skis of a motor sledge Download PDF

Info

Publication number
WO1995017327A1
WO1995017327A1 PCT/FI1993/000552 FI9300552W WO9517327A1 WO 1995017327 A1 WO1995017327 A1 WO 1995017327A1 FI 9300552 W FI9300552 W FI 9300552W WO 9517327 A1 WO9517327 A1 WO 9517327A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
snowmobile
tie
front axle
steering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/FI1993/000552
Other languages
French (fr)
Inventor
Tapani Toivanen
Pekka Toivanen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FI922961A priority Critical patent/FI91845C/en
Application filed by Individual filed Critical Individual
Priority to PCT/FI1993/000552 priority patent/WO1995017327A1/en
Publication of WO1995017327A1 publication Critical patent/WO1995017327A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/003—Steerable axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
    • B60B35/1036—Dead axles, i.e. not transmitting torque adjustable for varying track operated with power assistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
    • B60B35/1072—Dead axles, i.e. not transmitting torque adjustable for varying track by transversally movable elements
    • B60B35/109—Dead axles, i.e. not transmitting torque adjustable for varying track by transversally movable elements the element is an axle part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B13/00—Sledges with runners
    • B62B13/02—Sledges with runners characterised by arrangement of runners
    • B62B13/06—Sledges with runners characterised by arrangement of runners arranged in two or more parallel lines
    • B62B13/08—Sledges with runners characterised by arrangement of runners arranged in two or more parallel lines with steering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M27/00—Propulsion devices for sledges or the like
    • B62M27/02—Propulsion devices for sledges or the like power driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/252—Snowmobiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M27/00—Propulsion devices for sledges or the like
    • B62M27/02—Propulsion devices for sledges or the like power driven
    • B62M2027/025—Snow mobiles characterised by the skis

Definitions

  • the track width of steering skis in snowmobiles conven ⁇ tionally is arranged in a fixed manner.
  • snowmobiles are used in varied applications, different versions of snowmobiles have to be manufactured with different fixed track widths of steering skis.
  • different terrain conditions may curtail the use of a snowmobile with a fixed track width.
  • a snowmobile with a narrow track width of the steering skis is much more agile in a terrain with densely growing wood than a snowmobile having steering skis with a wide track width.
  • a snowmobile with steering skis of wide track width is more stable to handle and exhibits less tendency to flip over than a snowmobile with a narrow track.
  • the length of the front axle/tie-rod is steplessly controllable and the assembly incorporates an actuator for the length control of the front axle/tie-rod.
  • the actuator With the help of the actuator, the length of the front axle/tie-rod, and thus, the track width of the steering skis can be readily varied.
  • the major benefit of the invention is therein that the track width of the steering skis can be controlled in a step ⁇ less manner during driving thus permitting the steering ski track width to be set according to the intended use and driving conditions of the snowmobile.
  • the front axle/tie-rod 1 comprises a center support rod 9 having actuated rods 10 extending distally outward from said center support rod and at least partially entering tele- scopically into said center support rod, whereby the steering skis 3 are attached to the ends of said actuated rods by means of balljoints 8.
  • the support to the steering skis is implemented by means of support rods 4.
  • auxiliary links can be used so arranged that no hindrance to the lateral movement of the steering skis 3 and to a small movement of the front axle/tie-rod 1 in the longitudinal direction of the snow ⁇ mobile.
  • the support rods 4 and the steering rods 6 with the pivotal joints 7 and 8 form a trapezoidal link system. This system facilitates the control of the track width of the steering skis 3 without altering the align ⁇ ment of the steering skis 3 of the snowmobile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Guiding Agricultural Machines (AREA)

Abstract

The present invention relates to an assembly for controlling the track width of steering skis in a track-belt-driven motorized snowmobile, said snowmobile incorporating a front axle/tie-rod (1) with the steering skis (3) attached to both ends thereof. Conventionally, the track width control of the steering skis in a snowmobile is difficult. In the assembly according to the invention, the length of the front axle/tie-rod (1) can be controlled in a stepless manner and the assembly includes an actuator (2) for the length control of the front axle/tie-rod.

Description

EQUIPMENT FOR ADJUSTMENT OF DISTANCE BETWEEN GUIDING SKIS OF A MOTOR SLEDGE
The present invention relates to an assembly for control- ling the track width of steering skis in a track-belt- driven motorized snowmobile, said snowmobile incorporat¬ ing a front axle/tie-rod with the steering skis attached to both ends thereof.
The track width of steering skis in snowmobiles conven¬ tionally is arranged in a fixed manner. As snowmobiles are used in varied applications, different versions of snowmobiles have to be manufactured with different fixed track widths of steering skis. Furthermore, different terrain conditions may curtail the use of a snowmobile with a fixed track width. For instance, a snowmobile with a narrow track width of the steering skis is much more agile in a terrain with densely growing wood than a snowmobile having steering skis with a wide track width. By contrast, in a rugged terrain, a snowmobile with steering skis of wide track width is more stable to handle and exhibits less tendency to flip over than a snowmobile with a narrow track.
Known from prior art is an assembly according to US patent publication No. 3,847,239 for controlling the steering ski track of a snowmobile. In this assembly the track width of the steering skis is not varied, but rather, with the rotation of the handlebar the steering ski track is shifted as a whole to the outer-bend side thus stabilizing the turning behavior of the snowmobile. However, this arrangement does not make the snowmobile capable of negotiating tight places.
It is an object of the present invention to provide an assembly for controlling the track width of steering skis in a snowmobile, said assembly being capable of offering an essential improvement to the control of the steering characteristics of a snowmobile with a simultaneous broadening of the operating possibilities of a snowmobile. It is a further object of the invention to provide an assembly for stepless control of the steering ski track width even during driving, said assembly being characterized by simple construction resulting in cost- advantageous manufacture and maintenance.
The goal of the invention is achieved by means of an assembly characterized by what is stated in the charac¬ terizing part of claim 1.
In the assembly according to the invention, the length of the front axle/tie-rod is steplessly controllable and the assembly incorporates an actuator for the length control of the front axle/tie-rod. With the help of the actuator, the length of the front axle/tie-rod, and thus, the track width of the steering skis can be readily varied. The major benefit of the invention is therein that the track width of the steering skis can be controlled in a step¬ less manner during driving thus permitting the steering ski track width to be set according to the intended use and driving conditions of the snowmobile.
In a preferred embodiment of the invention, the front axle/tie-rod with the steering skis attached thereto are supported to the chassis of the snowmobile by means of a trapezoidal link system formed by support rods, steering rods and pivotal joints. Such a link system has proven highly functional in use.
In a further preferred embodiment of the invention, the front axle/tie-rod incorporates a center support rod having actuated rods extending distally outward from said center support rod and at least partially entering tele- scopically into said center support rod, whereby the steering skis are attached to the ends of said actuated rods. The assembly has a simple and highly functional construction. Alternative arrangements can be used in different applications.
The invention is next examined with reference to attached drawings, in which:
Figure 1 is a top view of an embodiment of the assembly according to the invention and the steering skis of a snowmobile; and
Figure 2 is a top view of the assembly illustrated in Fig. 1 and the steering skis of a snowmobile rotated to an other position; and
With reference to Fig. 1, the steering skis 3 of a snowmobile are shown controlled to a narrow track width. Accordingly, the length-wise steplessly controllable front axle/tie-rod 1 is shown in its shortest position.
The length of the front axle/tie-rod 1 is made adjustable by means of an actuator 2 adapted to the center part of the tie-rod. The actuator itself is a conventional type of actuator powered by the engine of the snowmobile.
The front axle/tie-rod 1 having the steering skis 3 attached to its both ends by means of pivotal joints 8 is supported to the chassis of the snowmobile with the help of support rods 4. When required, auxiliary links can be used so arranged that no hindrance to the lateral move¬ ment of the steering skis 3 and to a small movement of the front axle/tie-rod 1 in the longitudinal direction of the snowmobile. The steering of the snowmobile takes place via the steering arms/rod 5 and 6 and the pivotal joints 7 and 8. With reference to Fig. 2, the steering skis 3 of the snowmobile are shown controlled to a wide track width. Accordingly, the length-wise steplessly controllable front axle/tie-rod 1 is shown in its longest position. In the embodiment illustrated in the diagrams, the front axle/tie-rod 1 comprises a center support rod 9 having actuated rods 10 extending distally outward from said center support rod and at least partially entering tele- scopically into said center support rod, whereby the steering skis 3 are attached to the ends of said actuated rods by means of balljoints 8. The support to the steering skis is implemented by means of support rods 4. Furthermore, when required, auxiliary links can be used so arranged that no hindrance to the lateral movement of the steering skis 3 and to a small movement of the front axle/tie-rod 1 in the longitudinal direction of the snow¬ mobile. The support rods 4 and the steering rods 6 with the pivotal joints 7 and 8 form a trapezoidal link system. This system facilitates the control of the track width of the steering skis 3 without altering the align¬ ment of the steering skis 3 of the snowmobile.
To those versed in the art it is obvious that the inven¬ tion is not limited by the preferred embodiment described above, but rather, can be widely varied within the inven¬ tive spirit of the invention disclosed in the appended claims.

Claims

Claims :
1. An assembly for controlling the track width of the steering skis of a snowmobile, said snowmobile incorpor- ating a front axle/tie-rod (1) with steering skis (3) attached to its both ends, c h a r a c t e r i z e d in that the length of said front axle/tie-rod is steplessly controllable and that said assembly further includes an actuator (2) for the length control of said front axle/tie-rod.
2. An assembly as defined in claim 1, c h a r a c ¬ t e r i z e d in that the front axle/tie-rod (1) with the steering skis (3) attached thereto are supported to the chassis of the snowmobile by means of a trapezoidal link system formed by support rods (4) and steering rods (6) with the pivotal joints (7) and (8).
3. An assembly as defined in claim 1 or 2, c h a r - a c t e r i z e d in that the front axle/tie-rod (1) incorporates a center support rod (10) having actuated rods (11) extending distally outward from said center support rod and at least partially entering telescopical- ly into said center support rod, whereby the steering skis (3) are attached to the ends of said actuated rods.
PCT/FI1993/000552 1992-06-26 1993-12-22 Equipment for adjustment of distance between guiding skis of a motor sledge Ceased WO1995017327A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI922961A FI91845C (en) 1992-06-26 1992-06-26 Device for controlling the track width of the ski slopes
PCT/FI1993/000552 WO1995017327A1 (en) 1992-06-26 1993-12-22 Equipment for adjustment of distance between guiding skis of a motor sledge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI922961A FI91845C (en) 1992-06-26 1992-06-26 Device for controlling the track width of the ski slopes
PCT/FI1993/000552 WO1995017327A1 (en) 1992-06-26 1993-12-22 Equipment for adjustment of distance between guiding skis of a motor sledge

Publications (1)

Publication Number Publication Date
WO1995017327A1 true WO1995017327A1 (en) 1995-06-29

Family

ID=26159273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1993/000552 Ceased WO1995017327A1 (en) 1992-06-26 1993-12-22 Equipment for adjustment of distance between guiding skis of a motor sledge

Country Status (2)

Country Link
FI (1) FI91845C (en)
WO (1) WO1995017327A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478098B2 (en) * 2000-10-04 2002-11-12 Bombardier Inc. Adjustable apparatus and kit for a coupled snowmobile suspension
WO2006000841A1 (en) * 2004-05-28 2006-01-05 Pedersen Roald H Snowmobile
EP1431173A3 (en) * 2002-12-20 2007-05-02 Yamaha Hatsudoki Kabushiki Kaisha Snow vehicle
CN104589917A (en) * 2015-01-22 2015-05-06 扬州金威环保科技有限公司 Front axle wheel tread regulating device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599136A (en) * 1950-06-21 1952-06-03 Delmer F Sherman Adjustable wheel and axle assembly
US3847239A (en) * 1972-05-08 1974-11-12 C Copeland Steering mechanism for self-propelled vehicles
GB2082986A (en) * 1980-09-03 1982-03-17 Coles Cranes Ltd Variable Track Width Steering Systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599136A (en) * 1950-06-21 1952-06-03 Delmer F Sherman Adjustable wheel and axle assembly
US3847239A (en) * 1972-05-08 1974-11-12 C Copeland Steering mechanism for self-propelled vehicles
GB2082986A (en) * 1980-09-03 1982-03-17 Coles Cranes Ltd Variable Track Width Steering Systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478098B2 (en) * 2000-10-04 2002-11-12 Bombardier Inc. Adjustable apparatus and kit for a coupled snowmobile suspension
EP1431173A3 (en) * 2002-12-20 2007-05-02 Yamaha Hatsudoki Kabushiki Kaisha Snow vehicle
US7255195B2 (en) 2002-12-20 2007-08-14 Yamaha Hatsudoki Kabushiki Kaisha Steering device for snowmobile
WO2006000841A1 (en) * 2004-05-28 2006-01-05 Pedersen Roald H Snowmobile
CN104589917A (en) * 2015-01-22 2015-05-06 扬州金威环保科技有限公司 Front axle wheel tread regulating device
CN104589917B (en) * 2015-01-22 2015-11-18 扬州金威环保科技有限公司 A kind of propons Wheel gauge regulator

Also Published As

Publication number Publication date
FI922961L (en) 1993-12-27
FI91845C (en) 1994-08-25
FI91845B (en) 1994-05-13
FI922961A0 (en) 1992-06-26

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