Introduction

My invention applies balance structure theories to chairs and beds which equipped on means of transport such as aircrafts, ships, cars, etc. and other applications required balance techniques.

Application of the invention in real life

Nowadays, chairs and beds are usually equipped on means of transport such as ships, cars, aircraft, etc. Although there are numerous technical improvements, these applications still do not meet users’ requirements. For example, in an aircraft which is taking off or landing, passengers are inclined to the rear or tilted forward. For a vehicle running on the road, when the road surface is tilted horizontally, the person and the chair are tilted horizontally. Moreover, when the vehicle is up and down the slope of a mountain pass, mountain or bridge, the person and the chair are also tilted forward and backward, respectively. Another instance to boats, ships, when there are storms, the ship is tilted in 4 main directions and 4 auxiliary directions.

The technical approach of the invention

The invention aims to use balance structure applying to chairs and beds on means of transport, as well as can be used for other applications required balance technologies.

ha order to achieve the purpose, the invention proposes a balance structure consisting of a metal spindle oi appropriate length to put the object at an appropriate position. At the middle point of the crankshaft is welded with metal rods which have the appropriate length and hardness to support the platform, and to mount with objects that need to be leveled or bolts fitted to the object The two ends of the crankshaft are welded with two round steel plates of appropriate thickness, and two steel p are mounted on the top of two vertical cylindrical rods by bearings, or balls, thi the two vertical cylindrical rods are welded, or bolting bolts to the ground, or mounting or bolting bolts in connection with other stabilizers to balance multiple directions.

The balance structure works as followings:

When the two vertical pillars are inclined in a direction perpendicular to the center line of the mandrel, or in a circular orbit that is perpendicular to the mandrel axis. Because of the weight of the mandrel itself and the weight of the object to be weighed equal to the shaft and the impact of gravity and by reducing the friction of the bearings fitted with two steel plates on the top of two vertical pillars, the shaft and object can easily rotate in the circular trajectory through two round steel plates at both ends of the mandrel and maintain balance ie the mandrel with the object always facing the ground or the ground when the vertical pillars are tilted or spinning, and when the two vertical pillars are inclined in the opposite direction respectively, the crankshaft and object still rotate backwards to remain the position moving towards the ground.

As the proposed method described, we have balanced the two directions perpendicular to the center line of the crankshaft, or balanced a circular trajectory perpendicular to the center line of the crankshaft in the case where occurs an external impact on the balance structure. Therefore, when we need to balance objects in many directions, we have to connect two or more structures and arrange the structures in the right direction to balance as mentioned above. Depending on the requirements of use, the installation and the connection between the balancing devices, instead of using the the crankshaft, we may use a straight shaft and two straight shaft heads that are eccentricly welded with two plates steel which has a round shape, downward towards the ground or the ground is still balanced as the crankshaft.

A brief description of the proposed structure is descibed in detail by figures as below:

The brief descriptions of figures:

Figure 1 : The vertical view of a bi-directional balancing device with a vertical section at the pillars T1 and T2

Figure 1': The plan view is equal to the bi-directional structure with a cross section at both ends T1 and T2

Figure la: The side view of the bi-directional structure.

Figure 2: The vertical view of the two-dimensional balancing device with the arrangement of details for combinating with other balancing devices, and a vertical section at the pillars T3 and T4.

Figure 2’: The plan view of the two-dimensional balancing device, with arrangement of details to combine with other balancing devices, and an equal cross section at the ends of the pillars T3 and T4.

Figure 2a: The side view of two balancing devices combined to balance the four directions.

Figure 2b: The equal view of two balancing devices combined to balance the four directions.

The descriptions of the invention.

Figures 1, 1 ', la, show a drawing of a two-dimensional equilibrium structure consisting of a double-sided CD metal rod welded to the ends of two semi-axes A' and B 'through two needle bars type forming an A'CDB’ crankshaft when being mounted so that the CD is parallel to the semi-axes A' and B On the CD, there are two metal rods C and D 'soldered for mounting bolts or welding with chair legs, bed legs or objects that need balance. The remaining ends of the semi-axes A 'and B' are welded perpendicular to the two steel plates A and B are circular and are mounted on the ends of me T1 and T2 cylinders through the V bearings. T1, T2 are bolted or welded to the ground or welded in combination with another leveling device to balance multiple directions.

Depending on the assembly requirements or the arrangement the object to be balanced, the two semi-axes A’and B' are still arranged as a straight shaft A'B '. They are eccentricly welded with two steel plates A and B in the direction to the ground.

As shown in Figures 2, 2 ', the two-dimensional balancing structure with the modifications in the structure are fitted with another top-leveling device to balance multiple directions (4 directions) without any changes about the balance, including a MNQP square or rectangular metal frame. At the point between the MN and PQ edges, there are two welded O and O steel sheets used for mounting bolts or welding with Tl, T2 stand legs of the upper balancing mechanism. The midpoint of the MP and NQ edges are welded to the ends of semi-axes E 'and F' _» the other end of the two semi-axes is welded with two circular steel plates E, F, when fitted parallelly the steel plate E to MP edge and semi-axis E 'perpendicular to steel plate E and steel plate F to NQ edge and semi-axis F perpendicular to steel plate F. Two E and F steel plates are installed on the ends of cylinders T3 and T4 through bearings V and the centreline of two semi-axes E', F' with a straight line. The legs of cylinders T3, T4 are fitted with bolts or welded on means of transport or the places where balance mechanism should be installed.

Figures 2a and 2b illustrate the two balancing devices combined to operate the four-dimensional equilibrium.

If there is an inclined shock which makes the ends of the pillars T3 and T4 inclined towards hi, the two steel plates A and B on the ends of the Tl, T2 cylinders will not work. Two steel plates of E and F on the head of T3, T4 roll or rotate in the same direction with hi according to the characteristics of the lower center of the two steel plates E, F. The two steel plates E, F rotate at an appropriate angle with inclined angle of two pillars T3, T4 to balance the object on the CD.

If there is an inclined shock which makes the ends of the pillars T3 and T4 inclined toward h2, the two plates A and B on the ends of Tl, T2 will not work. Two steel plates E and F on the head of T3, T4 roll or turn in the opposite direction from the direction of h2 according to the characteristics above the center of two steel plates E, F. Two steel plates E, F rotate at an equivalent angle corresponding to the inclined angle of two pillars T3, T4 to balance the object on the CD.

If there is an inclined vibration which makes the ends of the two pillars T3, T4 inclined toward h3, the two steel plates E and F on the ends of the pillars T3, T4 will not work. In that case, two steel plates A and B on the head of Tl, T2 roll or rotate in the same direction with h3 according to the position where is lower center of the two steel plates A end B. The steel plates of A and B rotate at an angle corresponding to the degree tilt the turrets of Tl and T2 and move the CD in the h3 direction to balance the object on the CD.

If there is an inclined shock which makes the ends of the two pillars T3, T4 inclined toward h4, the two steel plates E and F on the ends of the pillars T3, T4 will not work. Two steel plates A and B on the top of the cylinders Tl, T2 roll or rotate with the same direction with h4 according to the position where is lower the center of the steel plates A and B. The steel plates A and B rotate at an angle corresponding to the tilt of Tl and T2 and move the CD in the h4 direction to balance the object on the

CD.