Claims:We claim:
1. A front fork suspension (1000) comprising:
• an outer tube (120),
• an inner tube (100) slidably attached to the said outer tube (120),
• a spring (110) placed in the inner tube (100) to provide a spring rate,
• an oil-lock cap (140) placed on top of the said outer tube (120),
wherein said oil-lock cap (140) is integrated with the said outer tube (120).
2. The front fork suspension (1000) as claimed in claim 1, wherein the said integrated oil lock cap (140) is made so at the time of casting.
3. The front fork suspension (1000) as claimed in claim 1, wherein the said integrated oil lock cap (140) is made so by drilling.
4. The front fork suspension (1000) as claimed in claim 1, wherein the said integrated oil lock cap (140) is made so by metal excavation.
, Description:FIELD OF INVENTION
The present invention relates to a front fork suspension. More particularly, the present invention relates to an integrated oil lock arrangement in the front fork suspension to be used in a two or three wheeler.

BACKGROUND OF INVENTION
Modern motor vehicles are equipped with front fork suspension which helps in providing safety to the riders as well as a comfortable ride by acting as a shock absorber. In the twin tube suspension, the shock absorber consists of a piston which moves up and down in a hydraulic fluid-filled cylinder.
The oil-lock cap is positioned inside the outer tube on top of the piston which is slidably placed in the said outer tube. The oil-lock cap locks the oil in the space in between outer tube and the inner tube of the suspension at the time of bottoming which thereby helps prevent the bottoming out of the vehicles by generating the bottoming load. If the suspension undergoes such a bottoming out, a strong and impulsive high vibration is transferred to the vehicle body and the ride feeling is spoiled. There has been various developments with respect to the oil lock cap in the suspension.
In the prior art JP4181948B2 the number of parts in the oil lock for the front fork suspension is reduced in is compact in the construction, and is free from an abrupt reaction force when changed over from the most compressive state into an extension action. The drawback in this invention lies in the manufacturing multiple parts and also alignment issues which might arise when the vehicle is in motion.
It is observed that the separate structure of the oil-lock cap for the front fork suspension, apart from increasing the material component and material cost, also results in misalignment of the entire structure.
The present invention intends to overcome limitations of prior art, provides an advancement over the prior art.
Hence, the first objective of the current invention is to provide a front fork that requires less manufacturing cost.
The second objective of the present invention is to reduce the number of parts in construction of the suspension system.
The third objective of the invention is to result in quality improvement of the front fork suspension.
The fourth objective of the present invention is to provide a smooth riding effect to the rider by eliminating the chances of angular deviation which would take place due to separate part adjustment.
BRIEF DESCRIPTION OF THE INVENTION
In order to achieve the above objects, the present invention provides a front fork suspension with an integrated oil lock cap. The two-wheeler or three wheeler fork includes an outer fork tube, a fork pipe, an oil-lock cap and an oil lock collar. The present invention focuses on integrating of the oil lock cap of the front fork suspension with the suspension outer tube. This integrated structure can be achieved either at the time of casting or by drilling or by scooping out the metal part from the outer tube. Due to the integrated structure, the unwanted frictional loss between the components is reduced and also a constant hydraulic lock is maintained. This constant hydraulic lock helps provide the desired bottoming load and thereby ensures a smooth ride.
Although the subject matter has been described in considerable detail with reference to certain preferred embodiments thereof, other embodiments are possible. As such, the spirit and scope of the appended claims should not be limited to the description of the preferred embodiment contained therein.

BRIEF DESCRIPTION OF THE DRAWINGS
Other aspects of the invention will become apparent by consideration of the accompanying drawings and their description stated below, which are merely illustrative of a preferred embodiment of the invention and do not limit in any way the nature and scope of the invention.
Figure 1 illustrates a cross sectional view of the front fork suspension.
Figure 2 illustrates the expanded view of the outer tube of the front fork suspension with the integrated oil seal in accordance with the present invention.

DETAILED DESCRIPTION OF THE DRAWINGS
The invention will now be described with reference to the accompanying drawings which do not limit the scope and ambit of the invention.
The Figure 1 illustrates the cross sectional view of the front fork suspension. The present invention envisages a front fork suspension (1000) for connecting a front wheel (not shown) and an axle of a two or three-wheeler to a frame thereof. The front fork suspension (1000) includes an outer tube (120), an inner tube (100) slideably placed inside the outer tube (120), a main spring (110) and a damping rod (130) placed on top of the said main spring (110). The main spring (110) is adapted to minimize the effect of a sudden jerk to the vehicle and a rider of the vehicle. More specifically, the spring (110) is adapted to dampen sudden jerks generated during running of the vehicle. Accordingly, the main spring (110) is adapted to prevent deformation, wear, and rupturing of metal parts of the vehicle. An oil-lock cap (140) is positioned inside the outer tube (120) on top of the damping rod (130) which is slidably placed in the said outer tube (120).
Figure 2 illustrates the expanded view of the outer tube (120) of the front fork suspension (1000A) with the integrated oil seal (140) in accordance with the present invention. The oil-lock cap (140) is positioned on top of the damping rod (130) and is integrated with the outer tube (120) of the present invention. Oil lock collar (not shown in the diagram) slides on the oil-lock cap (140) at the time of suspension damping and forms the hydraulic lock. This hydraulic lock so created prevents bottoming out of the suspension.
The technical advancements offered by the present disclosure include:
• The present invention results in smooth working mechanism of the suspension.
• The integrated oil lock cap structure eliminates the chances of the sticky movement of the suspension components.
• This structural improvement eliminates the undesired frictional effect in between the integrated components.
• Due to the integrated structure, there is the elimination of alignment issue of the components of the present invention.
• The constant oil locking mechanism helps in maintaining hydraulic force consistency.
• Due to the consistency in oil locking mechanism, there is a consistency in prevention of bottoming out.
• The integrated structure provides ease of serviceability.
While considerable emphasis has been placed herein on the specific features of the preferred embodiment, it will be appreciated that many additional features can be added and that many changes can be made in the preferred embodiment without departing from the principles of the disclosure. These and other changes in the preferred embodiment of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

LIST OF REFERENCE NUMERAL
100-Inner Tube
110-Main Spring
120-Outer Tube
130-Damping Rod
140-Oil-Lock Cap
150-Spacer Tube
1000-Front Fork Suspension
1000A-Expanded view of Outer Tube