Field of the invention
The present invention relates to a shock absorber, more particularly it relates to a rear shock absorber with a canister providing compression damping arrangement.
Background of the invention
Shock absorbers of motor cycle rear suspensions have tension and compression damping functions to provide riding comfort. The suspension spring bounces back from the uneven surface rather than soaking the impact. When the vehicle hits a bump, the piston inside the damper moves within the tube filled with damping oil. The oil is then dissipates from the holes of the valve and hence allowed limited resistance to the movement of piston thereby performing efficient damping. Damping values are one time set while manufacturing/ assembling and there is no provision of adjustment. Different damping rates are needed while travelling with high speed, cruising, etc. Adjustment of compression damping depending upon the rider comfort requirement is a need but it is not feasible in the normal shock absorbers.
Accordingly, there exists a need to provide shock absorber with compression damping arrangement, which overcomes drawbacks of the prior arts.
Object of the invention
An object of the present invention is to provide a means for adjustment compression damping to improve rider comfort.
Another object of the present invention is to provide a easy to operate and easy to access arrangement for adjustment of compression damping.
Summary of the invention
The present invention provides a easy to operate and easy to access means for adjustment compression damping to improve rider comfort. Shock absorber of the present invention comprises of an adjustable compression damping assembly secured to the damper. Hydraulic fluid of the damper can flow to the adjustable compression damping assembly through a throttle. The adjustable compression damping assembly comprises of a hydraulic fluid chamber is concentrically fitted within a base support and the other end of the hydraulic fluid chamber is closed with the valve controller. The valve controller fitted with a damper plate is having an arrangement for adjusting the throttle opening and in turn the flow of hydraulic fluid through the throttle. The adjustable compression damping assembly is fitted into a rotatable canister. The throttle opening is adjusted rotating the canister in either clockwise or anticlockwise direction to get the required compression value.
Brief description of the drawings:
The objects and advantages of the present invention will become apparent when the disclosure is read in conjunction with the following figures, wherein
Figure 1 shows a perspective view of a rear shock absorber with a canister for adjustment of compression damping, in accordance with the present invention;
Figure 2 shows a cross sectional view of a rear shock absorber with a canister for adjustment of compression damping, in accordance with the present invention;
Figure 3 shows a detailed view of a damper plate of the canister, in accordance with the present invention;
Figure 4 shows a detailed view of a valve controller of the canister, in accordance with the present invention;
Figure 5 shows a detailed view of a base plate of the canister, in accordance with the present invention;
Detailed description of the invention
The foregoing objects of the present 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 embodiments.
The present invention provides a means for compression damping for a rear shock absorber. More particularly it provides a canister with throttling mechanism; the canister being connected to the main damper body regulates the oil flow quantity during compression action.
The present invention is illustrated with reference to the accompanying drawings, wherein numbers indicated in the bracket represent the components of the invention throughout the description.
Referring to figures 1 to 5, a rear shock absorber (100) with a canister (30) providing compression damping arrangement, in accordance with the present invention is shown. The rear shock absorber (100) comprises of a damper (10) filled with a hydraulic fluid. A piston (not shown) is slidably disposed within the damper (10) with a piston rod (not shown) having its one end secured to the piston and the other end extending through the damper (10). A suspension spring (20) circumscribes the damper (10 and the piston rod (not shown). The rear shock absorber (100) further comprises an adjustable compression damping assembly (30) secured to the damper (10). The adjustable compression damping assembly (30) a hydraulic fluid chamber (80) fluidly connected to the damper (10) through a throttle (50). The hydraulic fluid chamber (80) is concentrically fitted with a base support (90) at one end and a valve controller (70) closing the other end. The valve controller (70) is a circular plate having a semicircular slot (70C) along the periphery thereof and a plurality of grooves (70B) along an inner edge of the semicircular slot (70C) in one half and a plurality of throttle openings (70A) in the other half thereof. A damper plate (60) is having a first projection (60C) capable fitting into the semicircular slot (70C), a second projection (60B) capable of fitting into one of the plurality of grooves (70B) and a semicircular throttle opening (60) capable of coinciding with the plurality of throttle openings (70A) when the damper plate (60) is fitted onto the valve controller plate (70). A canister (40) encloses the hydraulic fluid chamber (80) along with the base support (90), the valve controller (70) and the damper plate (60). The canister (40) is capable of rotating in any one of the clockwise and anticlockwise direction thereby rotating the base plate (90), the hydraulic fluid chamber (80) and the valve plate (70). When the canister is rotated in clockwise or anticlockwise direction, the hydraulic fluid chamber (80) along with the valve plate (70) the hydraulic also rotate and second projection (60B) of the damper plate (60) is locked in one of the plurality of grooves (70B) of the hydraulic plate (70). This adjusts the flow through the throttle (50) thereby adjusting the compression damping value. The locking position of the throttle (50) is maintained till the next change is done. The easy to operate and easy to access provision for adjusting the compression damping provides flexibility to adjust ride comfort based on the rider’s requirement.
Advantages of the invention:
• The compression damping arrangement of the present invention improves the ride comfort with damping value tuning provision.
• The provision for adjusting the compression damping provides flexibility to adjust ride comfort based on the rider’s requirement.
• The specially designed canister of the present invention can be offered as a novel provision with the vehicle.
• The compression damping arrangement is easy to operate and easy to access.
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.
,CLAIMS:We claim:
1. A shock absorber (100) with an adjustable compression damping assembly (30) secured to a shock absorber damper (10) filled with a hydraulic fluid, the adjustable compression damping assembly (30) comprising:
a hydraulic fluid chamber (80) fluidly connected to the damper (10) through a throttle (50); the hydraulic fluid chamber (80) concentrically fitted within a base support (90) at one end;
a valve controller (70) closing the other end of the hydraulic fluid chamber (80), the valve controller (70) being a circular plate having a semicircular slot (70C) along the periphery thereof and a plurality of grooves (70B) along an inner edge of the semicircular slot (70C) in one half and a plurality of throttle openings (70A) in the other half thereof.;
a damper plate (60) having a first projection (60C) capable fitting into the semicircular slot (70C), a second projection (60B) capable of fitting into one of the plurality of grooves (70B) and a semicircular throttle opening (60) capable of coinciding with the plurality of throttle openings (70A);
a canister (40) enclosing the hydraulic fluid chamber (80) along with the base support (90), the valve controller (70) and the damper plate (60) and capable of rotating in any one of the clockwise and anticlockwise direction thereby rotating the base plate (90), the hydraulic fluid chamber (80) and the valve plate (70);
wherein, rotating the canister (40) rotates the base plate (90), the hydraulic fluid chamber (80) and the valve plate (70) thereby locking the damper plate (60) to any one of the plurality of grooves (70B) to adjust the flow of the hydraulic fluid through throttle (50) thereby adjusting the compression damping and locking the position of the throttle (50) till the next change.

Dated this 6th day of September, 2017

Prafulla Wange
(Agent for the applicant)
(IN/PA-2058)