KR20080078754A - Ommited - Google Patents

Abstract

A piston type shock absorbing head rest is provided to prevent damage to a neck of a passenger and reduce the collision pressure on a head and the head rest by reducing separation of the head rest from a head of the passenger. A piston type shock absorbing head rest comprises a cylinder(c) wherein a filling material is filled, a piston(d), a sorption part(a), a supply hole(l), and a restoring device(e). The piston, embedded in the cylinder, has more than one flow-through hole(g) penetrating a front chamber and a rear chamber to maintain airtightness with an inner wall of the cylinder, and to divide the cylinder into the front chamber and the rear chamber. The sorption part is vertically connected with the piton through a connection shaft(b) while contacted with a head part of a passenger. The supply hole fills the filling material into the cylinder. The restoring device restores the thickness of the head rest which is reduced by compression of the piston to pre-operated thickness.

Description

Piston type shock absorbing headrest

Figure 1 shows the state before operation of the shock absorbing headrest in accordance with the present invention.

2 shows a state in which the shock absorbing headrest according to the present invention is operated by impact.

The present invention relates to a shock absorbing headrest mounted on a seat of a vehicle,

In particular, the present invention relates to a device for protecting a passenger's neck when a vehicle crashes.

In general, when a collision accident occurs in the rear of the vehicle, the occupant's body moves forward with the vehicle, while the head stays in place by the law of inertia, which causes the neck to suddenly flip back.

At this time, the neck of the occupant is severely hit by the head restraint, which causes serious injury or severe neck break.

However, in the structure of the conventional headrest, the headrest is placed on the same straight line as the seat backrest, so that the impact is increased due to the wide spacing between the head and the headrest.

In addition, the shock absorbing power of the head restraint itself has a weakness that can not effectively reduce the impact.

The present invention to solve the problems of the conventional headrest as described above,

A cylinder filled with a filling material therein,

A piston inserted in the cylinder and maintaining the airtightness with the inner wall of the cylinder and dividing the cylinder into the front and rear threads and having at least one flow hole passing through the front and rear threads;

A sorption part installed at the front of the cylinder and contacting the head of the occupant and vertically connected through a piston and a connecting shaft ;

It provides a shock-absorbing headrest, characterized in that made of a spring as a basic component for restoring the compressed piston.

On the other hand, the components for improving the performance and additional functions can be further configured as needed above.

The present invention

A cylinder filled with a filling material therein,

A piston inserted in the cylinder and maintaining the airtightness with the inner wall of the cylinder and dividing the cylinder into the front and rear threads and having at least one flow hole passing through the front and rear threads;

A sorption part installed at the front of the cylinder and in contact with the head of the occupant and vertically connected through a piston and a connecting shaft;

A shock absorbing headrest having a spring as a basic component is a restoring device for restoring a compressed piston.

On the other hand, the components for improving the performance and additional functions can be further configured as needed above.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a shock-absorbing headrest according to the present invention is a view showing a state before operation.

(Same as each part name in Fig. 2)

a sorrel

b connecting shaft

c cylinder

d piston

e Restoration device

f packing

g distributor

h all rooms

i rear room

j Thickness adjusting device

k fixture

l supply hole

m Thickness of headrest before operation

The thickness of the compressed headrest after operation

Indicates.

The above will be described in more detail for each function as follows.

A is a sorption part.

This is the first place where the passenger's head receives the pressure caused by head collision during a seating and traffic accident.

The material may be arbitrarily changed and configured as desired, but more preferably, an airbag or a soft elastic body having a high impact absorption rate.

b is the connecting axis.

This connects the sorption part (a) and the piston vertically,

It serves to transfer the pressure generated at the sorption part to the piston.

c is a cylinder and the inside is filled with filling materials, such as air, a fluid, and gas.

d is a piston.

The piston (d) maintains an airtight state with the inner wall of the cylinder and divides the inside of the cylinder into a front chamber and a rear chamber.

When pressure exceeding the pressure of the filling material filled in the cylinder is transmitted to the piston through the connecting shaft, the piston moves backwards,

This reduces the width (m) of the compression headrest filling material of the rear thread.

e is a restoring device.

This creates a vertical connection between the rear wall of the piston and the rear wall of the rear cylinder.

Compressed as shown in Figure 2 serves to smoothly restore the headrest reduced in thickness to its original thickness.

The present invention has shown a spring device as a restoring device which is a preferred embodiment, and can be configured by arbitrarily changing the number and position in consideration of the restoring force.

f is the packing.

This provides airtightness inside the cylinder.

g distributor

When the pressure balance of the filling material in the front and rear threads of the cylinder is broken,

The filling material moves (inflow or outflow) between the front and rear chambers of the cylinder and maintains the pressure equilibrium.

By adjusting its diameter, the compression speed of the piston is controlled.

The distribution hole having a large diameter increases the moving speed between the front and rear chambers of the filling material due to the pressure difference, thereby reducing the absorption rate of the impact on the occupant's head during the collision by causing the piston to move to the rear chamber at a rapid speed. .

Therefore, it is very important to adjust the size and number of the diameter of the distribution hole to the configuration that best meets the purpose of providing the headrest according to the present invention.

h is all rooms.

i is afterroom.

j is a thickness control device.

This acts to adjust the thickness of the headrest before the operator artificially to fit the occupant's position by artificially adjusting the thickness of the headrest, it is shown as a preferred strap can be replaced with a variety of other devices.

k fixture

It serves to fix the thickness of the headrest adjusted through the adjuster.

l is the supply hole for injecting the filling material into the cylinder.

For convenience, a selected one of various filling materials including air, fluid, and gas may be used.

Figure 2 shows the state after the operation of the shock absorbing headrest according to the present invention.

The width m of the headrest before the operation is changed to the width n of the headrest after the operation by the pressure.

The configuration of the present invention has been described in detail according to the accompanying drawings,

Shock absorbing headrest according to the present invention provided in the configuration as described above

When the occupant sits on the seat and seats the back of the headrest on the headrest, the occupant can rest comfortably with the pressure and the changing position.

By reducing or minimizing the separation between the occupant's head and the headrest, in order to reduce the neck damage caused by the crutch of the occupant due to a collision in the event of a traffic accident

The pressure generated when a passenger's head collides with the headrest during boarding or traffic accident is transmitted to the piston through the connecting shaft to move the piston backwards, reducing the rear thread area of the cylinder and increasing the pressure of the rear thread filling through the distribution hole. Slowly reducing the width of the headrest by allowing the filling material to move slowly in the front chamber

When the occupant's head falls from the headrest (ie, when the pressure is released), the piston can be restored smoothly by using the restoring device installed in the rear room to repeat the action of minimizing the separation between the occupant's head and the headrest. By

In normal times, each passenger's position provides differentiated comfort

During a traffic accident, the headrest naturally supports the neck that is flipped backwards due to a sudden impact, and at the same time, it absorbs the impact so as to reduce the neck impact caused by a strong head collision with the conventional rigid headrest.

Shock-absorbing headrest according to the present invention

The effect of providing a comfortable headrest for the changing position and the pressure applied when the occupant sits on the seat and seats the head on the headrest,

As described above, by reducing the distance between the headrest and the occupant's head, it provides an effect of reducing neck damage caused by a sharp necking of the occupant due to a collision when a traffic accident occurs.

Claims (2)

In the headrest, Cylinder filled with filling material A piston inserted in the cylinder and maintaining the airtightness with the inner wall of the cylinder and dividing the cylinder into the front and rear threads and having at least one flow hole passing through the front and rear threads; It is installed at the front of the cylinder and in contact with the head of the occupant and vertically connected through the piston and the connecting shaft and Supply hole for filling filling material into cylinder Piston-type shock-absorbing headrest, characterized in that configured as a basic component for the restoration device for restoring the thickness before the headrest operation reduced in thickness by the compression of the piston. In 1 above Piston-type shock-absorbing headrest, characterized in that it further comprises as an additional component for improved performance and additional functions as needed.

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