DESC:LINKAGE SHOCK ABSORBER WITH POLY URETHANE FOR DAMPING
Field of the invention
The present invention relates to a shock absorber of an automobile and more particularly, to a Linkage Shock absorber with specially designed PU for damping.
Background of the invention
Automobiles are designed with suitable suspension systems with a combination of oil filled dampers and springs to provide a riding comfort for the passengers travelling in it. Dampening or cushioning is normally controlled through combination of a piston, several plate-valves, oil quantity and a chamber to house all the parts which will be tuned to the requirement of vehicle design and road conditions. These dampers are of complicated nature, where rider cannot easily judge the shock absorbers performance, life and replacement cycle at the right time. Since dampers are also expensive, replacement usually takes a second seat and rider continues to ride with compromised comfort.
Accordingly, the conventional dampening system with a tube fabricated chamber filled with oil and a cylinder mechanism with various plate valves fastened to a piston needs to be replaced with a new dampening system with effective dampening, that is free of oil, tube, plate valves, piston mechanism, etc. that overcomes the above mentioned drawbacks of the prior art.
Object of the invention
An object of the present invention is to provide a linkage shock absorber with effective dampening effect in automobiles without usage of any hazardous and crude oil.
Another object of the present invention is to provide a shock absorber at an affordable cost to replace at convenient time, by virtue of its low cost.
Summary of the invention
The present invention discloses a linkage shock absorber mounted between a lower mount on a vehicle wheel and an upper mount on a vehicle body. The linkage shock absorber comprises of at least one scissor linkage unit connecting the upper mount and the lower mount. Each scissor linkage unit includes a first pair of intersecting scissor arms interconnected at a first fulcrum with a centre bush there between and a second pair of intersecting scissor arms interconnected at a second fulcrum with a centre bush there between. The second pair of intersecting scissor arms is connected to the first pair of intersecting scissor arms at side fulcrums with a side bush (35) to form a scissor type linkage. The first pair of intersecting scissor arms and the second pair of intersecting scissor arms is having a notch profile at the fulcrum, and the centre bush is shaped to match the notch profile. The centre bush and the side bush are made of a composite material like polyurethane material and molded to suit the intended application with suitable hardness and compression co-efficient.
Brief description of the drawings
The objectives and advantages of the present invention will become apparent from the following description read in accordance with the accompanying drawings wherein,
Figure 1 shows the detailed view of a linkage shock absorber, in accordance with the present invention; and
Figure 2 shows the detailed view of a linkage shock absorber bushes, in accordance with the present invention.
Detail 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 embodiment.
According to the present invention, a shock absorber is provided to generate a dampening effect without using conventional design of a damper. Linkage shock absorber of the present invention is with simple linkages housed with a specially profile bush which can generate dampening effect required to the application. This design does not require oil or grease thereby eliminating worry of contamination or leakage. The linkage shock absorber does not require damage protection to sliding parts and it overcomes many other drawbacks which exists in conventional suspension dampers. All the parts used in the linkage shock absorber are of recyclable type which reduce the carbon foot print. The linkage used in the present invention for generating dampening effect is a scissors type linkage. Scissor type linkages are normally used for lifting various loads due to the simple hub technology and the robust design. At least two congruent shears are used for constructing scissors type linkage. Multiple such pairs of scissors are arranged one above the other to form the linkage shock absorber. Linkages consist of center profile bushes and side support bushes made of polyurethane material supporting frictionless movement. Linkage shock absorber of the present invention replaces the existing shock absorber in the vehicle and can be mounted utilizing the end mounting arrangements of the original shock absorber.
The present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers indicate corresponding parts in the various figures. The components of the invention and the reference numbers are also listed in the table below:
Ref No Component Ref No Component
100 Linkage Shock Absorber 20b Second fulcrum
10 Scissor linkage unit 25 Centre bush
10a First pair of intersecting scissor arms 30 Side fulcrum
10b Second pair of intersecting scissor arms 35 Side bush
20a first fulcrum 40 Notch profile
FIGS. 1 and 2 illustrate a linkage Shock absorber (100) for damping system of a vehicle, in accordance with the present invention. The linkage shock absorber (100) is mounted between a lower mount on a vehicle wheel and an upper mount on vehicle body. The linkage shock absorber (100) comprises of at least one scissor linkage unit (10) having one end connected to the upper mount and the other end connected to the lower mount. Each scissor linkage unit (10) consists of a first pair of intersecting scissor arms (10a) interconnected at a first fulcrum (20a) with a centre bush (25) there between and a second pair of intersecting scissor arms (10b) interconnected at a second fulcrum (20b) with a centre bush (25) there between. the second pair of intersecting scissor arms (10b) is connected to the first pair of intersecting scissor arms (10a) at side fulcrums (30) with a side bush (35) there between to form a scissor type linkage. In an embodiment, the number of scissor linkage unit (10) connected in series depends upon the distance between the upper mount and the lower mount.
The first pair of intersecting scissor arms (10a) and the second pair of intersecting scissor arms (10b) is having a notch profile (40) at the fulcrum (20a, 20b). The centre bush (25) shaped in such a way that it matches with notch profile (40). The centre bush (25) is assembled into the notch profile (40) of one scissor arm and riveted to the notch profile (40) of the other scissor arm. All the linkages are fastened firmly for the designed structural strength and linkage sliding action. The linkage shock absorber (100) is mounted on the vehicle without changing the configuration of the vehicle.
The centre bush (25) is suitable to take both tension and compression damping requirements of the shock absorber. The centre bush (25) and the side bush (35) are made of a special composite material, preferably a polyurethane material. The centre bush (25) and the side bush (35) provide guide and help in frictionless movement.
All the scissor linkage units (10) are fastened firmly for the designed structural strength and linkage sliding action and the linkage shock absorber (100) is mounted on the vehicle without changing the configuration of the vehicle.
The above individual linkages (10) are assembled to each other and built to the design requirement of mounting eyelets. Each link when operated during compression and expansion, the specially designed centre bush (25) compresses to the designed angle, acts as a dampening member and provides the required suspension requirement.
Advantages of the invention
1. The present invention provides a linkage shock absorber (100) that replaces the conventional piston and fork type damping system, and the linkage shock absorber (100) which is free from Contamination and Leakage failures.
2. The present invention provides a linkage shock absorber (100) that is affordable to replace at convenient time, by virtue of its Low cost.
3. The present invention provides a linkage shock absorber (100) that can be mounted on any type of vehicle and there is no requirement of vehicle configuration change to mount this new design damper
4. The present invention provides a linkage shock absorber (100) that provides simple and convenient way of manufacturing process.
5. All the parts used in linkage shock absorber (100) are of recyclable material which reduces carbon foot print.
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 scope of the invention.
,CLAIMS:CLAIMS
We claim:
1. A linkage shock absorber (100) mounted between a lower mount on a vehicle wheel and an upper mount on vehicle body, the linkage shock absorber (100) comprising multiple scissor linkage unit (10) connecting the upper mount and the lower mount, each scissor linkage unit (10) including:
a first pair of intersecting scissor arms (10a) interconnected at a first fulcrum (20a) with a centre bush (25) there between;
a second pair of intersecting scissor arms (10b) interconnected at a second fulcrum (20b) with a centre bush (25) there between;
the second pair of intersecting scissor arms (10b) connected to the first pair of intersecting scissor arms (10a) at side fulcrums (30) with a side bush (35) to form a scissor type linkage;
wherein the first pair of intersecting scissor arms (10a) and the second pair of intersecting scissor arms (10b) is having a notch profile (40) at the fulcrum (20a, 20b) and the centre bush (25) shaped to match the notch profile (40).
2. The linkage shock absorber (100) as claimed in claim 1, wherein the centre bush (25) and the side bush (35) are made of polyurethane material
Dated this on 27th day of June 2019

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