Technical Field

The present invention relates to a shock damping member whereby viscosity and thermal conductivity characteristics are enhanced by metal oxides such as copper oxide, iron oxide, silicon oxide or aluminium oxide included in a damping fluid.

Background of the Invention

Dampers (shock absorbers) are one of the main organs of the moving part (chassis) included in vehicles and they provide the comfort and safety for the drive and ensure the connection of the vehicle with the road. Dampers function as a hydraulic piston mechanism which is responsible for continuously maintaining the balance of the vehicle and providing the comfort necessary for the persons inside the vehicle to travel for a long time and they put up a resistance that is opposite to the direction of movement of the vehicle and parallel to the speed of the vehicle. The damping fluid, which is an oil-like fluid included in the damper, absorbs the energy generated by shock and vibration by converting it into heat.

Today, pure oil is used as damping fluid in dampers. Pure oil has problems of cooling performance at high temperatures. Since this situation leads to decrease of viscosity, it causes the damping force to decrease and a low comfort performance to be experienced. Therefore, today there is a need for solutions which will overcome problems of cooling performance and comfort by increasing the viscosity and thermal conductivity values of the damping fluid at high temperatures.

Summary of the Invention An objective of the present invention is to realize a shock damping member which enables to realize performance enhancement by increasing the viscosity and thermal conductivity at high temperatures by using hybrid nanoparticles in damping elements.

Another objective of the present invention is to realize a shock damping member which enables to obtain high damping force and high cooling performance by using metal oxides such as copper oxide, iron oxide, silicon oxide or aluminium oxide as nanoparticle.

Another objective of the present invention is to realize a shock damping member which enables to enhance damping performance at high temperatures by adding damping fluid, that is pure oil, and metal oxide at a rate varying between 0.3-0.5%.

Detailed Description of the Invention

“A Shock Damping Member” realized to fulfill the objectives of the present invention is shown in the figure attached, in which:

Figure l is a section view of the inventive shock damping member.

The components illustrated in the figure are individually numbered, where the numbers refer to the following:

1. Damping member

2. Inner tube

3. Outer tube

4. Piston rod

5. Repulsion spring

6. Spring guide The inventive shock damping member (1) whereby performance enhancement is realized by increasing the viscosity and thermal conductivity at high temperatures by using hybrid nanoparticles in damping fluid comprises:

- at least one inner tube (2) which enables realization of damping process and wherein damping fluid is included;

- at least one outer tube (3) wherein the inner tube (2) is located and where the flow of damping fluid occurs from the inner tube (2) during the vehicle movement;

- at least one piston rod (4) which is located inside the inner tube (2) and moves inside the damping fluid;

- at least one repulsion spring (5) which is located on the piston rod (4); and

- at least one spring guide (6) which fixes the repulsion spring (5) on the piston rod (4) such that a certain space remains between the piston rod (4) and itself in order to prevent the contact between the piston rod (4) and the repulsion spring (5).

In one preferred embodiment of the invention, the inner tube (2) is a pressure tube wherein the damping fluid, that is pure oil, is included and the damping process occurs. Pure oil is included in the inner tube (2) as the damping fluid. The inner tube (2) comprises hybrid nanoparticles wherein at least two metal oxides exist together with the damping fluid. The said hybrid nanoparticles in the inner tube (2) are created by joining at least two of copper oxide, iron oxide, silicon oxide, titanium oxide or aluminium oxide together. Nanoparticles with a hybrid structure in the ratio varying between 0.3-0.5% according to the damping fluid are included in the inner tube (2). High cooling performance and damping force are achieved compared to conventional dampers, by using metal oxide nanoparticles together with pure oil. On the other hand, sizes of the damping member (1) are reduced compared to conventional applications by using hybrid nanoparticles.

In the inventive damping member (1), the outer tube (3) contains the damping fluid, that will dampen the motion of the piston rod (4), and the inner tube (2) together during the damping process. Oil flow occurs based on the upward and downward motion of the piston rod (4) between the outer tube (3) and the inner tube (2). Thereby, the damping process can occur upon the volume of the pure oil -that is the damping fluid inside the inner tube (2) and the outer tube (3) - and the piston rod (4) changes continuously based on the vehicle movement.

The piston rod (4) included in the inventive shock damping member (1) is a moving component that carries out the damping process based on the road conditions. The piston rod (4) carries out the damping process by moving inside an inner tube (2) which is filled with pure oil wherein metal oxide is added.

The repulsion spring (5) creates an additional reaction force for the upward motion of the piston rod (4) inside the inner tube (2) in addition to the damping fluid. The repulsion spring (5) is mounted with two spring guides (6) fixed on the piston rod (4), without contacting the piston rod (4). Thereby, contact of the piston rod (4) - which is metal- and the repulsion spring (5) -which is metal- with each other is avoided. The spring guide (6) is made of a plastic material.

The inventive damping member (1) is a damper. Inside the damping fluid included in the damping member (1), which is a damper, a viscosity increase of approximately 30% is observed in the damping elements (1) by means of the nanoparticle structure obtained within the pure oil by using at least two metal oxides exist together inside the damping fluid and an increase in cooling performance from 90 °C to 110 °C occurs in the cooling performance. This increase is between 90- 100°C maximum in the long term and it is between 110-120°C maximum in the short term.

It is possible to develop various embodiments of the inventive shock damping member (1); the invention cannot be limited to examples disclosed herein and it is essentially according to claims.