Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
  • B62K21/00—Steering devices
  • B62K21/18—Connections between forks and handlebars or handlebar stems
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
  • B62K21/00—Steering devices
  • B62K21/06—Bearings specially adapted for steering heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
  • B62K21/00—Steering devices
  • B62K21/18—Connections between forks and handlebars or handlebar stems
  • B62K21/22—Connections between forks and handlebars or handlebar stems adjustable

Definitions

• Figure 1 shows a sketch of the front end of a motorcycle made in the median plane thereof.
• Figure 2 shows the same sketch but seen from the front.
• Figure 3 shows the detailed mounting of the steering column by a section l-l of Figure 2 passing through its axis of rotation.
• the pivot axis is tilted forward so that the axis of rotation of the front wheel is in front of the steering column.
• the angle (A) formed by the perpendicular to the ground and the pivot axis is called “hunting angle”.
• the distance (C) between the projection of the pivot axis on the ground and the point of contact of the wheel on the ground is called “ground flush”.
• Figure 1 1 is a section identical to Figure 9 but in an extreme position of adjustment of the offset on the upper plate.
• Figure 12 is a section along VI-VI of Figure 9.
• the axis (37) passes through a guide piece (14) fixed in place of the element (6a) of Figure 3 in the tube (5), appropriately and by way of nonlimiting example by tight fitting and needle screw (13) preventing any rotational movement of the part (14) in the tube (5).
• the part (14) has a groove with parallel sides (18a) and (18b). The axis of this groove must imperatively be arranged in the plane of Figure 4, or more exactly in the plane of Figure 1 which is the median plane of the vehicle and the plane of definition of the hunting angle (A).
• two adjusting screws (27a) and (27b) make it possible to move and position the bearing (416) at a position (B ') between (B-e) and (B + e).
• the new value (B ') of the offset of the upper plate (43) associated with the offset (B) of the lower plate (44) causes an angle (b) between the axis of rotation of the column axis (47) and the axis of the suspension legs (2a) and (2b).
• This inclination is made possible by the tilting of the plates (43) and (44) respectively on the swiveling axes (32) and (31) of the bearings (416) and (41 1).
• the inclination (b) due to the offsets (B ') and (B) causes a modification of the hunting on the ground (C) different from the value (C) of Figure 1.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vehicle Body Suspensions (AREA)
• Axle Suspensions And Sidecars For Cycles (AREA)

Applications Claiming Priority (3)

Publications (1)

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Family Applications (1)

Country Status (4)

Families Citing this family (16)

Family Cites Families (3)

• 2002
  • 2002-07-19 FR FR0209176A patent/FR2842491B1/fr not_active Expired - Fee Related
• 2003
  • 2003-07-16 WO PCT/FR2003/002240 patent/WO2004009431A1/fr not_active Ceased
  • 2003-07-16 EP EP03753646A patent/EP1551694A1/de not_active Withdrawn
  • 2003-07-16 US US10/521,621 patent/US20060113745A1/en not_active Abandoned

Non-Patent Citations (1)

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