DESC:PISTON FOR SHOCK ABSORBER

Field of the invention

The present invention generally relates to shock absorbers and more particularly to a piston for the shock absorbers.

Background of the invention

In vehicles, all hydraulic shock absorbers work by the principle of converting kinetic energy into thermal energy (heat). A hydraulic fluid like oil used in the shock absorber is forced to flow through restricted outlets and valve systems for generating hydraulic resistance. When a piston is forced up or down by bumps in the road, the hydraulic fluid moves between different chambers via restricted outlets and valve systems like small holes or "orifices" in the piston valve for generating hydraulic resistance.

Presently, the piston valve involves only circular holes for oil flow. However, this existing design of the piston valve has some drawbacks. The circular holes cause restriction on the volume of oil flowing through them. With restriction in the volume of oil flow, damping forces at higher velocities tends to be higher since the volume of the oil flow is less against the piston displacement. Attempts have been made in the art to increase the volume of the oil flowing through the valves to achieve the desirable damping force. One such attempt involves designing the piston valve with higher number of circular holes which adds to the cost of manufacturing and makes the piston weaker.

Hence, there is a need to provide a piston for the shock absorbers for enhancing damping comfort by overcoming the above mentioned drawbacks of the prior art.

Object of the invention

An object of the present invention is to increase volume of hydraulic fluid flowing through a piston valve of a shock absorber for enhancing damping comfort without increasing cost and compromising on structural integrity of piston.

Summary of the invention

Accordingly, the present invention provides a piston for the shock absorbers. The piston comprises a plurality of holes configured thereon. The plurality of holes is adapted to allow hydraulic fluid flow there through. The plurality of holes are cashew shaped holes offering increased surface area for hydraulic fluid passages thereby allowing more volume of hydraulic fluid to flow there through at a higher flow rate thereby reducing the damping forces at higher velocities in both rebound and compression states thus resulting in enhanced damping comfort. The cashew shaped holes are of different sizes to achieve different damping forces at higher velocities.

Brief description of the drawing

The objectives and advantages of the present invention will become apparent from the following description read in accordance with the accompanying drawing wherein,
Figure 1 shows a schematic diagram of a piston for a shock absorber, in accordance with the present invention.

Detailed description of the invention

The foregoing objects of the invention are accomplished and the problems and shortcomings associated with the prior art techniques and approaches are overcome by the present invention as described below in the preferred embodiment.

The present invention provides a new design of a piston with holes for shock absorbers. The new design of the piston holes includes cashew shaped holes for increasing volume of hydraulic fluid like oil flowing there through thereby enhancing damping comfort.

The present invention is illustrated with reference to the accompanying drawing, throughout which reference numbers indicate corresponding parts in the figure. These reference numbers are shown in bracket in the following description.

Referring now to figure 1, there is shown a piston (100) for a shock absorber (not shown) in accordance with the present invention. The piston (100) includes a plurality of holes (80) configured thereon. The plurality of holes (80) is adapted to allow hydraulic fluid flow there through.

Specifically, the plurality of holes (80) of the piston (100) is plurality of cashew-shaped holes (80) of higher cross section area. The plurality of cashew-shaped holes (80) offers an increase in a surface area thereof for hydraulic fluid like oil passages. This aids in higher volume of the flow of the hydraulic fluid at increased oil flow rate during higher velocities of damping forces as compared to circular holes design in prior art. The plurality of cashew shaped holes (80) helps in reducing the damping forces at higher velocities in both rebound and compression states thus resulting in enhanced damping comfort. In an embodiment, the plurality of cashew shaped holes (80) is of different sizes to achieve different damping forces at higher velocities.

Advantages of the invention

1. The piston (100) provides different sizes of the cashew shaped holes (80) for achieving different damping forces at higher velocities.
2. As the piston (100) enhances damping comfort, there no need to have multi hole design piston valve.

The foregoing objects of the invention are accomplished and the problems and shortcomings associated with prior art techniques and approaches are overcome by the present invention described in the present embodiment. Detailed descriptions of the preferred embodiment are provided herein; however, it is to be understood that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure, or matter. The embodiments of the invention as described above and the methods disclosed herein will suggest further modification and alterations to those skilled in the art. Such further modifications and alterations may be made without departing from the spirit and scope of the invention.
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,CLAIMS:1. A piston (100) for a shock absorber, the piston (100) comprising a plurality of holes (80) configured thereon to allow hydraulic fluid flow there through, characterized in that the plurality of holes (80) being a plurality of cashew shaped holes offering increased surface area for hydraulic fluid passages thereby allowing more volume of hydraulic fluid to flow there through at a higher flow rate thereby reducing the damping forces at higher velocities in both rebound and compression states thus resulting in enhanced damping comfort.

2. The piston (100) as claimed in claim 1 characterized in that the plurality of cashew shaped holes (80) are of different sizes to achieve different damping forces at higher velocities.