COVERS

DESCRI PTI ON

Technical Field of the I nvention

The invention subject to the application is related to a ramp door mechanism with hydraulic piston and protection covers for vehicles where safety criteria are important.

Known State of the Art related to the I nvention ( Prior Art)

The invention subject to the application is related to a mechanism that has been developed to avoid any kind of security weakness related to doors of vehicles that open, where safety criteria is important and as the vehicles carry passengers or loads or objects in various sizes; and has been developed for the vehicle to continue to move with the least deformation.

Said mechanism has been aimed to be applied to any kind of opening/closing door of a mechanism in order to increase safety and to minimize any damages that may occur. This system which is used in vehicles related with ramp door mechanisms and safety issues has been developed as a ramp door that can be opened having a wide door section which provides protection against external attacks. As the ramp type door motion mechanism located at the external surface of the vehicle is kept under protection by means of the developed invention, during the time when the vehicle is used for domestic security interventions, the vehicle can continue to move without being damages and thereby during emergency climbing off and on, the vehicle can be quickly loaded and unloaded.

A loss in the inner volume can be seen when the piston motion mechanism is positioned inside the vehicle in ramp door mechanisms that are applied to the known state of the art of the invention. When said mechanism is mounted outside of the vehicle it is then exposed to external threats and damages. By means of the mechanism developed according to the invention the mechanism has been protected against any external attacks. The mechanism shall not deteriorate during attacks that aim to damage the vehicle.

A ramp door mechanism within the known state of the art is described in the US 200600220481 numbered document. However said ramp door has been mounted onto the body by means of a spring mechanism which is not solid and strong.

The document numbered US 20100123330 is also related to a ramp door within the known state of the art, however said mechanism has been attached to the body by means of simple hinge structures and any kind of security concern was not taken into consideration. When exam ined both in terms of physical and functions aspects it can be clearly understood that this ramp door is not sim ilar to the invention subject to the application.

Brief Description of the I nvention and its Aims

The ramp door mechanism invention which makes doors that open safer in vehicles where protection characteristics against security weaknesses need to be maximum , must provide safety for the objects that need to be taken out of the vehicle which is protected against external attacks. The door section in vehicles having ramp type doors need to be large and the vehicle should be able to be loaded and unloaded in a very short period of time. As the mechanism which shall provide the protection of the vehicle is located outside of the vehicle, space is also saved in the inner volume of the vehicle.

The mechanism related to sturdy and protected piston structures can also be easily protected against the external attacks of the vehicle. Piston mechanisms are turned into protected structures against external attacks by means of piston protection covers.

I n the present situation, vehicles which need to be secure, the pistons are usually mounted inside the vehicle such that they occupy space or are mounted outside of the vehicle such that they create security weakness against external attacks. The following shall be carried out by means of the hydraulic piston ramp door mechanism that has been formed by bringing the mechanical sub parts of the invention together;

• Space is saved inside a closed volume by means of the piston door not being located inside the vehicle,

· The vehicle provides protection against external attacks by means of the protection structure developed for the piston structure,

• I t is enabled for the vehicle to operate safely during security-critical events,

• The loads that are to be loaded into the vehicle shall be able to be easily unloaded- loaded,

· As serious changes cannot be carried out in terms of the total number of parts relating to the applications carried out in the known state of the art, the financial liability shall be kept at a minimum according to functional development. Definitions of the figures describing the invention

The drawings that have been prepared in order to further explain the ramp door mechanism developed according to the invention, which makes the opening and/or closing of doors in vehicles safer where the protection characteristics against security weakness is desired to be maximum , is described below.

Figure 1 - General View of the Protected Piston

Figure 2- General View of the Ramp Door

Figure 3- General View of the I nner Side of the Hydraulic Piston Structure.

Figure 4- View of the Door Opening Scenario

Figure 5-View of the Open Position of the Ramp Door

Definitions of the aspects/ parts/ sections forming the I nvention

The parts/sections/ aspects within the figures that have been prepared in order to further explain the ramp door mechanism developed according to the invention, which makes the opening and/or closing of doors in vehicles safer where the protection characteristics against security weakness is desired to be maximum, have each been numbered and the references of each number has been listed below.

1 . Piston Protection Bottom Cover

2. Piston Protection I ntermediate Cover

3. Piston Protection Top Cover

4. Rotation Pin

5. Connection Pin

6. Bottom Bearing Pin

7. Ramp Door

8. Ramp Door Rotation Bearing

9. Hydraulic Drive Piston

1 0. Top Bearing

Detailed Description of the I nvention

The ramp door mechanism which enables the opening doors to be safe in a vehicle for which, protection characteristics are desired to be maximum against security weaknesses subject to the invention comprises: • A piston protection bottom cover (1 ) an intermediate cover (2) and a top cover (3) which provides protection against security weaknesses of pistons,

• A rotation pin (4) , connection pin (5) and bearing pin (5) which enable the

rotation, placing into bearing and fixing of pistons,

• A ramp door (7) structure having a hydraulic piston which can eliminate security weaknesses,

• A ramp door rotation bearing (8) which shall make the ramp door structure

rotations easier,

• A hydraulic drive piston (9) and a top bearing (10) which enable rapid movements of the door during ramp door motions.

The basic application of the ramp door mechanism invention having a piston protected cover used in vehicles subject to the application where security criteria is of significant importance is as follows;

• The protected piston structure provides a safety protection for piston protection bottom cover (1 ) , piston protected intermediate cover (2) , piston protected top covers (3) which can be easily understood from the general view of the protected piston structure.

• The parts numbered 4,5 and 6 are the covers, rotation and connection bearing pins.

• When the protection bottom cover (1 ) and protection intermediate cover (2) move on the pins (4) , (5) , (6) when the ramp door (7) is moving.

• The ramp door rotation bearing (8) enables the related rotation of the ramp door (7) subject to the invention.

• The hydraulic piston structure (9) is a main mechanic structure that provides the general operation of the system without closing the piston covers.

• The top bearing mechanism (10) provides ramp door connection.

• The bottom bearing pin (6) provides the coupling to the body from the bottom section of the piston (9) .

• The motion of the ramp door (7) and the protection covers (1 ) , (2) , (3) , are provided only by means of the hydraulic drive piston (9) .

• When the ramp door (7) is closed the hydraulic piston (9) protection doors (1 ) , (2) , (3) also assume a closed position on their own and thereby provide the required protection.