WO2018127930A1 - Motorcycle monoshock front steering - Google Patents

Motorcycle monoshock front steering Download PDF

Info

Publication number
WO2018127930A1
WO2018127930A1 PCT/IN2017/000111 IN2017000111W WO2018127930A1 WO 2018127930 A1 WO2018127930 A1 WO 2018127930A1 IN 2017000111 W IN2017000111 W IN 2017000111W WO 2018127930 A1 WO2018127930 A1 WO 2018127930A1
Authority
WO
WIPO (PCT)
Prior art keywords
motorcycle
fork
suspension
attached
front fork
Prior art date
Application number
PCT/IN2017/000111
Other languages
French (fr)
Inventor
Atul Kumar
Original Assignee
Atul Kumar
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
Application filed by Atul Kumar filed Critical Atul Kumar
Publication of WO2018127930A1 publication Critical patent/WO2018127930A1/en

Links

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 SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B62K21/02—Front wheel forks or equivalent, e.g. single tine
    • 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 SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork

Definitions

  • the invention relates to the field of motorcycle front steering and suspension mechanism.
  • the motorcycle steering and suspension mechanism comprises of a front fork attached with the frame and not the handlebar with an acute fork angle.
  • the front fork of the motorcycle is attached with the frame enabled to rotate freely along the axis where it is attached and can also rotate on the axis of the fork tube.
  • a head tube is placed behind the joint of the front fork to allow the fork to rotate along its own axis (axis of the fork tube), which is essential for the steering of the motorcycle.
  • a suspension spring is attached with the head tube at one end and with the frame, in front of the sprocket, on the other end with an angle of around 45 degrees.
  • Handlebar is attached to the main sprocket, making an angle of about 30 degrees with the ground.
  • the sprocket gear is wrapped around with a heavy duty chain whose ends are connected with the front fork side arms between the head tube and the point where the fork is joined with the frame.
  • Figurel is a side perspective view of a motorcycle having a steering mechanism constructed in accordance with the present invention and in position for straight away operation.
  • Figure2 is a top perspective view of a motorcycle having a steering mechanism in a static and unturned position
  • Figure3 is the front view of the motorcycle front steering in an unturned position.
  • Figure4 is also the front view of the motorcycle front steering but with the handlebar is turned towards the right side, respective to the forward moving direction of the motorcycle showing how the front wheel will bend.
  • Figures is the rear view of the motorcycle front steering showing the sprocket attached with the handlebar and the chain attached with the side arms, in a better way.
  • Figure6 is also the rear view of the motorcycle front steering but with the handlebar turned towards the right side, respective to the forward moving direction of the motorcycle showing how the front wheel will bend.
  • FIG7 is the ungrouped / exploded view of the motorcycle front steering, showing all the participating components of the steering mechanism.
  • the steering mechanism of the motorcycle is shown from the side where the handlebar (1) is connected to a sprocket (4) wrapped around with a chain (3), which rotates the front fork side arms (10) and hence the front fork (6).
  • the front fork (6) of the motorcycle is not directly attached with the handlebar and at an angle of around 30 degrees to the ground.
  • the front suspension (5) is attached with the frame (11 ) at one end and with the fork head (7) at the other.
  • the fork head (7) can be seen just behind the front for neck.
  • the steering mechanism is shown from the top.
  • the wheel (2) can be seen at the top of the figure fixed between the front fork legs (9), which is attached with the frame (11) of the motorcycle at the other end, down below in the figure. From this view it can be seen, that the handlebar (1) is in its centred position and the front suspension (5) is just above the fork tube (8).
  • FIG3 the front view of the steering mechanism is shown where the front wheel can be seen, which is in between the front fork legs and has the sprocket (4) chain (3) set behind it.
  • the handlebar (1) is in its centred position.
  • FIG4 the view is same as in figure3, but here the handlebar (1) has been turned to show the bending motion of the front wheel (2).
  • the handlebar (1) is turned towards the right hand side of the motorcycle (left from the front view), therefore the front wheel (2) has also bent towards the right side.
  • a tensioner (13) can also be seen under the chain behind the wheel.
  • FIG5 the rear view of the invention is shown where the handlebar (1) is attached with the sprocket (4) which rotates at the same axis of rotation as of the handlebar.
  • the chain (3) runs around the sprocket and is attached with the front fork side arms (10) at its ends, its tension is maintained by the tensioner (13) under it.
  • the front suspension (5) can also be seen from underneath the chain (3).

Landscapes

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

Abstract

A new steering and suspension mechanism of a motorcycle is disclosed. The mechanism includes a mono (single) front suspension and the front fork attached with the frame, steered with help of a chain sprocket mechanism connected with the handlebar. Due to such arrangement, the wheel bends along with turning t.o wards the direction it is steered, giving the rider a never before experience of handling and manoeuvring.

Description

Motorcycle Mono Shock Front Steering
Field of invention:
The invention relates to the field of motorcycle front steering and suspension mechanism.
Background of the invention:
Motorcycles have been a part of our lives since a long time and the basic design and structure have also remained almost the same. The front steering is one of those parts of the motorcycle whose basic design has not been changed much. Two telescopic fork arms with two separate suspension cylinders attached to the fork head is what have been followed till now. With this invention, the front steering and suspension has been redesigned altogether. The single suspension has not been used ever for the front suspension and this is the main component around which the whole steering mechanism of this invention is designed. This design gives the motorcycle a unique look and also the rider, a different and an unmatched steering and handling experience.
Description:
The following specification particularly describes the invention and the manner in which it is to be performed.
The motorcycle steering and suspension mechanism comprises of a front fork attached with the frame and not the handlebar with an acute fork angle.
The front fork of the motorcycle is attached with the frame enabled to rotate freely along the axis where it is attached and can also rotate on the axis of the fork tube.
A head tube is placed behind the joint of the front fork to allow the fork to rotate along its own axis (axis of the fork tube), which is essential for the steering of the motorcycle.
A suspension spring is attached with the head tube at one end and with the frame, in front of the sprocket, on the other end with an angle of around 45 degrees.
Handlebar is attached to the main sprocket, making an angle of about 30 degrees with the ground.
The sprocket gear is wrapped around with a heavy duty chain whose ends are connected with the front fork side arms between the head tube and the point where the fork is joined with the frame.
Two tensioners are placed in between the chain gap below the sprocket to constantly maintain the tension in the chain when the suspension is under load. Brief description of the drawings:
The features of the present invention are set forth with particularity in the appended claims. The invention, together with further objects and advantages thereof, may best be understood by reference to the following description taken in conjunction with the accompanying drawings in which:
Figurel is a side perspective view of a motorcycle having a steering mechanism constructed in accordance with the present invention and in position for straight away operation.
Figure2 is a top perspective view of a motorcycle having a steering mechanism in a static and unturned position
Figure3 is the front view of the motorcycle front steering in an unturned position.
Figure4 is also the front view of the motorcycle front steering but with the handlebar is turned towards the right side, respective to the forward moving direction of the motorcycle showing how the front wheel will bend.
Figures is the rear view of the motorcycle front steering showing the sprocket attached with the handlebar and the chain attached with the side arms, in a better way.
Figure6 is also the rear view of the motorcycle front steering but with the handlebar turned towards the right side, respective to the forward moving direction of the motorcycle showing how the front wheel will bend.
Figure7 is the ungrouped / exploded view of the motorcycle front steering, showing all the participating components of the steering mechanism. Detailed description of the illustrated embodiments: in figure 1, the steering mechanism of the motorcycle is shown from the side where the handlebar (1) is connected to a sprocket (4) wrapped around with a chain (3), which rotates the front fork side arms (10) and hence the front fork (6). As it can be seen from this perspective, the front fork (6) of the motorcycle is not directly attached with the handlebar and at an angle of around 30 degrees to the ground. The front suspension (5) is attached with the frame (11 ) at one end and with the fork head (7) at the other. The fork head (7) can be seen just behind the front for neck.
In figure2, the steering mechanism is shown from the top. The wheel (2) can be seen at the top of the figure fixed between the front fork legs (9), which is attached with the frame (11) of the motorcycle at the other end, down below in the figure. From this view it can be seen, that the handlebar (1) is in its centred position and the front suspension (5) is just above the fork tube (8).
In figure3, the front view of the steering mechanism is shown where the front wheel can be seen, which is in between the front fork legs and has the sprocket (4) chain (3) set behind it. The handlebar (1) is in its centred position.
In figure4, the view is same as in figure3, but here the handlebar (1) has been turned to show the bending motion of the front wheel (2). Here the handlebar (1) is turned towards the right hand side of the motorcycle (left from the front view), therefore the front wheel (2) has also bent towards the right side. A tensioner (13) can also be seen under the chain behind the wheel.
In figure5, the rear view of the invention is shown where the handlebar (1) is attached with the sprocket (4) which rotates at the same axis of rotation as of the handlebar. The chain (3) runs around the sprocket and is attached with the front fork side arms (10) at its ends, its tension is maintained by the tensioner (13) under it. The front suspension (5) can also be seen from underneath the chain (3).
In figure6, the rear view of the invention is shown where the handlebar (1) is turned towards the right side, due to which the sprocket (4), has turned clockwise. Due to this rotation, the chain (3) has also moved and now is more towards the right side. As' a result the front fork (6) has rotated along its axis and the wheel (2) has bended towards right.
In figure7, all the main components have shown in an ungrouped manner. Every part is placed near its adjoining part.

Claims

Claims: I claim,
1. The front fork of the said motorcycle's front steering is no attached with the handlebar directly but attached with the frame of the said motorcycle.
2 The said front fork is able to rotate about the central axis of the fork tube of the said front fork, attached to the said frame of the said motorcycle.
3. The said front wheel bends more along with turning sidewise towards the side it is steered, instead of conventional turning.
4. The handle bar of the said motorcycle is connected to the chain sprocket assembly which transfers the energy to the said front fork by pulling and pushing the front fork's side arms.
5. Two tensioners are placed below the said sprocket to keep the chain under tension when the suspension is under load or the suspension spring is compressed.
6. The said front fork has two arms perpendicular to the said fork tube of the said fork and they are at 180 degrees to each other, connected to the said chain at their respective ends.
7. The fork head of the said front fork is situated around the said fork tube and just behind the said front fork joint which holds the said front fork in its position and is also a mount for the front mono suspension of the said motorcycle.
8. The said front mono suspension is connected to the said frame of the said motorcycle in front of the said chain sprocket assembly.
9. The said motorcycle has only one single spring suspension attached with the said fork head and the said frame of the said motorcycle.
PCT/IN2017/000111 2017-01-09 2017-08-04 Motorcycle monoshock front steering WO2018127930A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201711000759 2017-01-09
IN201711000759 2017-01-09

Publications (1)

Publication Number Publication Date
WO2018127930A1 true WO2018127930A1 (en) 2018-07-12

Family

ID=62789177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2017/000111 WO2018127930A1 (en) 2017-01-09 2017-08-04 Motorcycle monoshock front steering

Country Status (1)

Country Link
WO (1) WO2018127930A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807898A (en) * 1987-06-22 1989-02-28 Huntly Robert B Motorcycle front suspension and steering system
JP2008114711A (en) * 2006-11-02 2008-05-22 Honda Motor Co Ltd Motorcycle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807898A (en) * 1987-06-22 1989-02-28 Huntly Robert B Motorcycle front suspension and steering system
JP2008114711A (en) * 2006-11-02 2008-05-22 Honda Motor Co Ltd Motorcycle

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