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1. (WO2019009864) EXPLOSION RESISTANT VEHICLE SEAT
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EXPLOSION RESISTANT VEHICLE SEAT

Technical Field

The invention relates to a vehicle seat which is resistant to the explosions that can be encountered with by the military vehicles and armored vehicles.

The invention specifically relates to an explosion resistant vehicle seat which decreases the impact of the explosion on the personnel in military vehicles and armored vehicles by dampening the energy created by various explosives.

Prior Art

During explosions of explosives such as mines, hand-made explosives etc. impact forces and accelerations occur inside the military land vehicles, which are one of the most significant constituents of the defense industry and these impact forces and accelerations affect the personnel inside the vehicle, causing injuries, disablements and even deaths. Vehicle seats are inadequate in terms of damping these impacts and accelerations. Generally, there are two basic effects of explosives on vehicles. During primary effect, the vehicle rises from floor because of shock wave and during secondary effect, the risen vehicle falls onto the floor with the gravity. When these effects occur, personnel are highly affected as well. In addition, the floor of the vehicle also is affected by the shock wave and deformations occur on the vehicle floor in connection with the first effect. The occurring deformation can be various depending on the location of the explosive under the vehicle.

These effects are tried to be minimized by various damping mechanisms used currently. Application with number GB2481202 presents impact absorbing connection elements, developed for this purpose. According to the application, elliptic elements made of stainless steel are used both on the surface to which the seat will be seated and in between, in order to provide that the vehicle seat is connected to the vehicle floor and also to act as impact dampener. Although these elements can eliminate the first effect to an extent, they are inadequate. In another application with number EP2650168,

elements are mentioned, which are used both for mounting the seat to the vehicle and to act as dampeners. These dampener elements have a hollow rectangular section and are mounted onto the chassis behind the seat. These elements can undergo various and multi-directional plastic deformation due to their hollow structure and they can be used for eliminating both first and second effects. In a similar manner, another implementation in order to eliminate both of the effects is provided on the application with number DE10130632. According to the said application, the damping effect is provided with both the seat belt and the dampeners under the vehicle seat.

In spite of the fact that the said applications provide double damping, they are still inadequate in terms of the falling effect which occurs during the fall of the vehicle after it rises. In addition, the dampeners located in areas to which the vehicle seats are mounted in the vehicles can distribute the impact equally when the explosion is near the dampeners, however; they are affected in different weights as the explosion gets further from the dampeners. This situation results the dampeners in working irregularly. In a similar manner, the load distributions with different intensities on the connection areas of the vehicle seats, which occur by the deformations occurred on the vehicle floor, affect the functioning of the dampeners negatively.

As a result, a novelty in the technical field regarding the problems, that are mentioned above and that cannot be solved with the prior art, is required.

BRIEF DESCRIPTION OF THE INVENTION

The present invention is related to an explosion resistant vehicle seat which is developed in order to eliminate all the disadvantages mentioned above, to offer new advantages to the related technic and to eliminate the double way impact effect caused by the explosives in military vehicles.

The main aim of the invention is to provide an explosive resistant vehicle seat which is developed in order to eliminate the impact effect on the personnel, created by the rising due to the shock impact of the explosives on the military vehicles.

Another aim of the invention is to provide an explosive resistant vehicle seat which is developed in order to eliminate the impact effect of the falling that is consecutive to rising on the personnel.

Another aim of the invention is to provide an explosive resistant vehicle seat which eliminates the deformation that is caused on the vehicle floor by the impact effect of the explosives.

Another aim of the invention is to provide an explosive resistant vehicle seat which is not affected by the location of the explosives.

In order to realize all the aims that are mentioned above and described in the detailed description below, the present invention is a vehicle seat to be used in military land vehicles, which comprises a structure composed of columns that are provided in a manner to be opposite to each other, a seat which is provided on the said structure and main dampeners which are provided between the said columns and the seat. Accordingly, the invention is vehicle seat; wherein the said main dampener comprises,

- main damping parts, which are provided on both of the lateral edges of the seat and which contract due to the impact of the energy occurring during the explosion and therefore guides the seat downwards

- damping straps, which are connected to the said main damping parts on one end and fixed to the structure on the other end and which have a rigid structure, therefore enabling the main damping parts deform during explosion, by their ends which are connected to the main damping parts.

A preferred structuring of the invention is that it comprises auxiliary dampeners which are provided on the columns and which are crushed based on the deformation occurred on the vehicle floor in order to reduce the effect of the deformation on the vehicle floor, which occurs due to the shock wave, on the said main dampeners.

Another preferred structuring of the invention is that the said damping strap comprises a damping clasp on one end of the main damping part.

Another preferred structuring of the invention is that the said damping strap comprises a connection clasp which connects on the column in a fixed manner.

Another preferred structuring of the invention is that it comprises a fastening strap which connects the two opposite damping strap to each other on the columns and the connection elements which fixates the said fastening strap to the columns on the two ends.

In order for the present invention is to be understood in the best manner along with its extra elements, an evaluation shall be made by taking the figures provided below into the account.

Brief Description of the Figures

Figure 1 Depicts the general view of the explosion resistant seat of the invention before the impact.

Figure 2 Depicts the general view of the explosion resistant seat of the invention after the impact.

Reference Numbers

10 Vehicle seat

1 1 Structure

1 1 1 Column

1 12 Intermediate Truss

1 13 Support Part

12 Top Connection Part

121 Top Connection Bolt

13 Bottom Connection Part

131 Bottom Connection Bolt

14 Headrest

15 Backrest

16 Seat

161 Lateral edge

162 Connection Hinges

17 Seat belt

20 Main Dampener

21 Main Damping Part

211 Channel

22 Fastening Strap

221 Connection Element

23 Damping Strap

231 Connection Clasp

232 Damping Clasp

30 Auxiliary Dampener

31 Auxiliary Damping Part

311 Channel

s: Seating angle

Detailed Description of the Invention

In this detailed description, the novelty of the invention is described with examples merely in order for the subject to be better understood, this description is not limiting in any manner.

With reference to Figure 1, the vehicle seat (10) of which the general view is provided, comprises a structure (11), a headrest (14) located on the said structure (11), a backrest (15), a seat (16) and a seat belt (17), to main dampeners (20) that are connected in between the said seat (16) and the structure (11) and two auxiliary dampeners (30) connected to the said structure (11). The structure (11) comprises two columns (111) provided side by side and two intermediate trusses (112) that are located in between the said columns (111) in a manner to connect the columns (111) to each other. The headrest (14) and the backrest (15) are connected to the columns (111) in parallel between the said columns (111). Seat (16) is connected to the backrest (15) via connection hinges (162) perpendicularly between the columns (111) in a manner to define a seating angle (s). The said connection hinges (162) also enable the seat (16) to fold. Support parts (113) which are connected on the columns (111) are located in two sides of the headrest (14). Seat belt (17) is connected to the vehicle seat (10) by connecting via the connection hinges (162) on the columns (111).

Columns (1 1 1 ) are fastened from top and bottom ends to a surface for the adaptation of the vehicle seat (10) inside the vehicle. For the said fastening operation, top connection bolts (121 ) and top connection parts (12) are used that are associated with the top connection parts (12) and columns (1 1 1 ) at the top end of the columns (1 1 1 ); and bottom connection bolts (131 ) and bottom connection parts (13) are used that are associated with the bottom connection parts (13) and columns (1 1 1 ) at the bottom end of the columns (131 )

The said main dampeners (20) comprise a fastening strap (22) which is connected under the headrest (14) between the columns (1 1 1 ), rigid damping straps (23) which extend from both ends of the said fastening strap (22) to lateral edges (161 ) of the seat (16) and main damping parts (21 ) on the lateral edge (161 ) where damping straps (23) are located. Fastening strap (22) is fastened onto the columns (1 1 1 ) with connection members (221 ). There are connection clasp (231 ) provided at the ends where damping straps (23) are associated with fastening strap (22) and there are damping clasp (232) located inside main guides (21 ) at the other end. Damping clasp (232) are moveable with the effect of the explosion in the +x direction inside the channel (21 1 ) provided on the main damping parts (21 ).

The said auxiliary dampeners (30) comprise auxiliary damping parts (31 ) provided at the bottom ends of the columns (1 1 1 ). The said auxiliary damping parts (31 ) are also associated with the bottom connection parts (13) over the bottom connection bolts (131 ). Bottom connection parts (13) are moveable in the +y direction with the plastic deformation of the auxiliary damping parts (31 ) in the channel (31 1 ) on the auxiliary damping parts (31 ).

According to the explosion physics principles, an occurring explosion generates two effects on the vehicle. The first one is the effect that is created by the shock wave with the rising of the vehicle and the second one is the effect that is created by the shock wave with the falling of the risen vehicle. In addition to these, the explosion causes deformation at the floor of the vehicle.

In the vehicle seat (10) made resistant against explosions, more than one mechanism becomes active to protect the personnel inside the vehicle at the moment of an explosion. In this context, first of all the support parts (1 13) located at the sides of the headrests (14) function as protectors to limit the head and neck traumas of the

personnel. Backrest (15) and seat (16) are manufactured to provide protection in case of explosion by taking into consideration the backbone ergonomics. Also, the seat belt (17) has been structured to limit the movement of the personnel on the vehicle seat (10) and minimize the impact effects.

Furthermore, dampening of the shock wave caused by the explosion is facilitated by the main dampeners (20) and auxiliary dampeners (30). In this context, the damping straps (23), which do not have flexibility property, that are associated with the said main damping parts (21 ) from one ends and fastened to the structure (1 1 ) from the other ends move in the +x direction. This way, main dampener parts (21 ) contract with deformation and the seating angle (s) between the seat (16) and the backrest (15) expand and provide the turning of the seat (16) in a downward w direction. The seat (16) that goes down at the same time as the vehicle go up, facilitates directing of the personnel downwards and minimizes the impact effect.

Auxiliary dampeners (30) support the operation of the main dampeners (20) independently of the explosion area. To facilitate this, auxiliary damping parts (31 ) contract with the occurrence of the explosion and facilitate the movement of the bottom connection bolts (131 ) and structure (1 1 ) columns (1 1 1 ) in +y direction according to the deformation at the floor of the vehicle. In this manner, auxiliary dampeners (30) eliminate the negative effect of the form deformation at the floor of the vehicle at the moment of explosion on the main dampeners (20).