PatSeer

ADJUSTABLE TURNING RADIUS STEERING MECHANISM
Pub. No. IN201611026884A
App. No. IN201611026884
App. No. Original IN201611026884
Appl. Date 05-Aug-2016
Pub. Date 16-Mar-2018
Inventor(s) NAVPREET SINGH, DR RAJDEEP SINGH
Assignee Norm. CHANDIGARH GROUP OF COLLEGES (LANDRAN KHARAR BANUR HIGHWAY SECTOR 112 LANDRAN SAHIBZADA AJIT SINGH NAGAR PUNJAB 140307 PUNJAB INDIA, IN)
Current Assignee CHANDIGARH GROUP OF COLLEGES (LANDRAN KHARAR BANUR HIGHWAY SECTOR 112 LANDRAN SAHIBZADA AJIT SINGH NAGAR PUNJAB 140307 PUNJAB INDIA, IN)
Current Owner CHANDIGARH GROUP OF COLLEGES
IPC B62D1/181
ABSTRACT
The present invention relates to an adjustable turning radius steering mechanism for a vehicle, comprising a turning radius adjuster 5 integral with a cycle fork 1, wherein the turning radius adjuster consists of multiple holes 6 corresponding to different turning radius; a steering lever 4 operatively coupled with turning radius adjuster 5 and adjusting position of the steering lever 4 with respect to the multiple holes 6 of the turning radius adjuster alters turning radius for the vehicle.

CLAIMS

1. An adjustable turning radius steering mechanism for a vehicle, the steering mechanism, wsacomprising; -a turning radius adjuster 5 integral with a cycle fork 1, wherein the turning radius adjuster consists of multiple holes 6 corresponding to different turning radius; -a steering lever 4 operatively coupled with said turning radius adjuster 5; - wherein adjusting position of the steering lever 4 with respect to the multiple holes 6 of the turning radius adjuster alters turning radius for the vehicle.

2. The steering mechanism as claimed in Claim 1, wherein steering mechanism is rear wheel mechanism for a three wheeled vehicle having two front wheels and a rear wheel.

3. The steering mechanism as claimed in Claim 1, wherein radius of said cycle fork 1 is approximately 11.70 cm and its width from centre line is approximately 45.41 cm.

4. The steering mechanism as claimed in Claim 1, wherein said turning radius adjuster 5 is approximately 108 cm in length and 20 cm in breadth.

5. The steering mechanism as claimed in Claim 1 and 4, wherein said adjuster it comprises a total of four holes 6 provided with a hole diameter of about 7.3 cm.

6. The steering mechanism as claimed in Claim 1, wherein there is connecting rod 3 coupled to said turning radius adjuster 5 by means of lever 4 attached at one end of the connecting rod .

7. The steering mechanism as claimed in Claim 1, wherein radius of vehicle can be changed by shifting and fixing said lever 4 to said respective holes 6.

8. The steering mechanism as claimed in Claim 1, wherein zero turning radius is achievable by adjusting the lever 4 to respective positions of holes.


DESCRIPTION
























FIELD OF THE INVENTION

The present invention relates to the rear wheel steering mechanism for a three wheeled vehicle having two front wheels and a rear wheel; more particularly the steering mechanism is adjustable for turning at various radii.

BACKGROUND OF THE INVENTION

It is well known that most of the vehicles have three wheel configurations like ATVs, e rickshaw, auto rickshaw. Most of these vehicles have front wheel steering mechanism to follow the desired path, but some of them like ATVs have rear wheel steering configuration in which the steering is done with the help of rear wheels. Two types of vehicle configuration can be possible i,e two wheels at front or two wheels at rear.

With two wheels in the front (the "tadpole" form or "reverse trike") the vehicle is far more stable in braking turns, but remains more prone to overturning in normal turns compared to a normal vehicle. Most of the time both hands are required to operate the steering mechanism. With current advancement in steering system which already goes beyond limit with minimum human effort s has seen hydraulic steering system or automation sensor steering system, whereas these technologies lacks behind in the case of zero turning radius. Although the materials used in making of these steering mechanism is quite heavy which ultimately add to the weight of the vehicle.

So there is a need to develop a steering system which is light in weight, have minimum effort and provides minimum turning radius.

SUMMARY OF THE INVENTION

Primary intent of the present invention is to provide a rear wheel steering mechanism for a three wheeled vehicle having two front wheels and a rear wheel, the steering mechanism comprising;

-a turning radius adjuster integral with the cycle fork, the turning radius adjuster comprises multiple holes corresponding to different turning radii; and

-a steering lever operatively coupled with the turning radius adjuster,

wherein adjusting position of the steering lever with respect to the multiple holes of the turning radius adjuster alters turning radius for the vehicle.

Additionally, the steering mechanism includes a handle for means of controlling the direction to follow the desired course. And further the steering mechanism includes a pivot flange for comfort drive of vehicle.

Embodiments of the present disclosure substantially eliminate or at least partially address the aforementioned problems in the prior art, and provide an efficient advantages over front wheel only steering including being easier for the operator to turn the three-wheeled vehicle, a smaller turning radius, better straight line stability, better high speed handling, improved corning performance, improved steering response and improves safety.

Additional aspects, advantages, features and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments construed in conjunction with the appended claims that follow.

It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.

Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:

FIG. 1 illustrates a top view of turning radius adjuster connected to fork in an embodiment of the present invention; and

FIG. 2 illustrates a top view of complete steering mechanism in an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.

Various other objects, advantages, and features of the invention will become more readily apparent to those skilled in the art from the following detailed description when read in conjunction with the accompanying drawings, in which like reference numerals designate like parts throughout the figures thereof.

Fig. 1 is a top view of the rear wheel cycle fork 01 which is integral with a turning radius adjuster 05 and the turning radius adjuster consist of various number of holes.

Fig. 2 shows a schematic view of the complete steering mechanism on the rear wheel of a three wheeled vehicle containing a cycle fork 01 and rear wheel 02 of a three wheeled vehicle. The figure further shows a turning radius adjuster 05 having a number of holes 06 provided on the turning radius adjuster a connecting rod 03 is also provided with a steering lever 04.

Generally, the present invention contains a rear wheel steering mechanism for a three wheeled vehicle having two front wheels and a rear wheel 02, the steering mechanism comprising a turning radius adjuster 05 integral with the cycle fork 01, the turning radius adjuster 05 comprises multiple holes 06 corresponding to different turning radii; and a steering lever 04 operatively coupled with the turning radius adjuster 05, wherein adjusting position of the steering lever 04 with respect to the multiple holes 06 of the turning radius adjuster 05 alters turning radius for the vehicle. The radius of cycle fork 01 is 11.70cm and its width from centre line is 45.41cm. Turning radius adjuster 05 is 108 cm in length and having a breadth of 20 cm, it comprises a total of four holes 06, which are provided with a hole diameter of 7.3 cm.

In an embodiment of the present invention the cycle fork 01 is mounted on the rear wheel 02 of a three wheeled vehicle. The turning radius adjuster 05 is integrally attached with the cycle fork 01 for providing different turning radii; there are various no of holes 06 provided on the turning radius adjuster for means of providing different turning radii to the vehicle. A connecting rod 03 is coupled to the turning radius adjuster 06 by means of lever 04 attached at one end of the connecting rod 06. The radius of vehicle can be changed by simply just shifting and fixing the lever to respective holes 06. For instance, with the 30 degree of rotation of steering, turn the lever 04 in forward direction then vehicle will turn right with having a very small turning radius or vice versa for left turn. Different lever positions is also capable of reducing the effort required for turning, as it has minimum turning effort as compared to Ackerman and anti-Ackerman steering system. It is also possible to have zero turning radii by adjusting the lever 04 to respective positions of holes.

When the three wheeled vehicle is required to turn with minimum effort, than accordingly the lever 04 as shown in fig.2 is shifted and then fixed to the respective position, so that when lever is turned minimum effort is required for turning means to say it can also be operated single handed like for example it can also be installed on a wheel chair for handicapped people.

While the disclosure has been presented with respect to certain specific embodiments, it will be appreciated that many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the disclosure. It is intended, therefore, by the appended claims to cover all such modifications and changes as fall within the true spirit and scope of the disclosure.