DESC:ADJUSTABLE COMPRESSION DAMPING SYSTEM IN SHOCK ABSORBER

Field of the invention:

The present invention relates to an adjustable damping in shock absorbers and more particularly, to an adjustable compression damping system in the shock absorbers having bottom knuckle bracket mounting and open ended cap mounting.

Background of the invention:

Normally, shock absorbers are designed and built to dampen average road undulation depending on the actual usage pattern. There are few high-end vehicles equipped with manual selection adjustable rebound damping or even with automatic adjustable damping options in the market which are quite expensive. In addition to rebound damping, there is also a requirement of adjusting compression damping for these knuckle bracket mounted shock absorbers, which is rarely available and are not positioned to cater large amount of medium category of passenger cars.

Due to compact vehicle design, space availability and concept of adjustable compression damping shock absorbers are almost not available or it is introduced in very few cases that too in high class passenger cars.

Since comfort to a rider is becoming a necessity and should be available at affordable price, there is need to design a system which can be both economical and also can house the system in the available space.

Objects of the invention:

An object of the present invention is to provide an automatic ride comfort damping adjustment with affordable cost.

Summary of the invention:

Accordingly, the present invention provides an adjustable compression damping system in a shock absorber that comprises an outer tube, a spool, a stud, a pusher, a feeder, a knob, a base plate/valve and an end cap that are operably connected with each other. An orifice is created in the base valve. The orifice is normally in closed condition performs normal damping function or in other words considered as sport mode condition. During compression stroke of the shock absorber, major amount of oil passes through the base valve creating damping force and small amount of the oil escapes through reverse flow of a piston. In this embodiment, the compression force remains normal i.e., sport mode as a standard damping. An actuator is incorporated below the base valve assembly. The actuator is activated to open the orifice in the base valve to bypass the oil flow through plate valves. This oil flow reduces the oil pressure on the base valve and results in reducing damping as designed to meet the comfort mode damping force. During an alternate mode, the base valve is actuated to close the orifice which regains original damper condition to achieve sport mode damping force. This changeover is operated electronically, so that it can automatically change the ride modes to sport and comfort depending on the road conditions and rider option.

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 side view of an adjustable compression damping system in a shock absorber, in accordance with a present invention; and

Figure 2 shows an enlarged side view of the adjustable compression damping system in the shock absorber, in accordance with a present invention.

Detailed description of the embodiments:

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 adjustable compression damping system in a shock absorber having bottom knuckle bracket mounting and open ended cap mounting. The present invention provides an automatic ride comfort damping adjustment with affordable cost.

The present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers indicate corresponding parts in the various figures. These reference numbers are shown in bracket in the following description and in the table below.

Component name: Component No:
Adjustable compression damping system 100
Outer Tube 10
Spool 1
Stud 2
Pusher 3
Feeder 4
Knob 5
Base plate/valve 6
End cap 7
Orifice 20
Actuator 30

Referring to figures 1 and 2, an adjustable compression damping system (100) in a shock absorber (hereinafter referred as, “the system (100)”), in accordance with the present invention is shown. The system (100) comprises an outer tube (10), a spool (1), a stud (2), a pusher (3), a feeder (4), a knob (5), a base plate/valve (6) and an end cap (7) that are operably connected with each other.

During compression stroke of the shock absorber, major amount of oil passes through the base valve (6) creating damping force and small amount of the oil escapes through reverse flow of a piston (not shown). In this embodiment, the compression force remains normal i.e., sport mode as a standard damping.

An orifice (20) is created in the base valve (6). The orifice (20) is normally in closed condition performs normal damping function or in other words considered as sport mode condition.

An actuator (30) is incorporated below the base valve assembly (6). The actuator (30) is activated to open the orifice (20) in the base valve (6) to bypass the oil flow through plate valves (not shown). This oil flow reduces the oil pressure on the base valve (6) and results in reducing damping as designed to meet the comfort mode damping force.

During an alternate mode, the base valve (6) is actuated to close the orifice (20) which regains original damper condition to achieve sport mode damping force. This changeover is operated electronically, so that it can automatically change the ride modes to sport and comfort depending on the road conditions and rider option.

Advantages of the invention:

1. The system (100) provides a feature of automatic ride selection on comfort mode or sport mode.
2. The system (100) also acts as a load balancer depending on the no. of rear seat passengers.

The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, and to thereby enable others skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the scope of the claims of the present invention. ,CLAIMS:We claim:

1. An adjustable compression damping system (100) in a shock absorber comprising:
an outer tube (10), a spool (1), a stud (2), a pusher (3), a feeder (4), a knob (5), a base plate/valve (6) and an end cap (7) that are operably connected with each other;
an orifice (20) created in the base valve (6), wherein the orifice (20) is normally in closed condition performs normal damping function as sport mode condition; and
an actuator (30) incorporated below the base valve assembly (6);
wherein, the actuator (30) is activated to open the orifice (20) in the base valve (6) to bypass the oil flow through plate valves, the oil flow reduces the oil pressure on the base valve (6) and results in reducing damping to achieve the comfort mode damping force; and further wherein the base valve (6) is actuated to close the orifice (20) that regains original damper condition to achieve sport mode damping force.

2. The adjustable compression damping system (100) as claimed in claim 1, wherein changeover in damping function is operated electronically to automatically change the ride modes to sport and comfort depending on the road conditions and rider option.

Dated this 30th day of June 2020

Madhavi Vajirakar
(Agent for Applicant)
IN/PA-2337