KR20110028474A

KR20110028474A - Whiplash protection arrangement

Info

Publication number: KR20110028474A
Application number: KR1020107029937A
Authority: KR
Inventors: 페테르 악셀쏜
Original assignee: 아우토리브 디벨롭먼트 아베
Priority date: 2008-07-04
Filing date: 2009-06-11
Publication date: 2011-03-18
Also published as: CN102076520A; WO2010002327A1; DE112009001411T5

Abstract

BACKGROUND OF THE INVENTION The present invention relates to a device for preventing damage to whiplash installed for use in a motor vehicle seat (1), which is adapted to be attached to a motor vehicle structure (4) and a seat back against a cushion (2) around a recliner pivot axis. 3) a seat back 3 supported by the cushion 2 via the recliner device 5 for adjustment of the angle. The whiplash protection device comprises two interactive pivot members 11, which are arranged to pivot relative to each other around the pivot axis when the force acting on the seat back 3 exceeds a predetermined threshold value as a result of the rear impact collision. 12), and the batter damage preventing device is installed between the recliner device (5) and the seat back (3) for adjusting the seat back. In addition, the pivot axes of the pivot members 11 and 12 are installed to coincide with the recliner pivot axes.

Description

Whiplash protection arrangement

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheel injury damage preventing device installed for use in a car seat and a car seat provided with a wheel loss damage preventing device. More specifically, the present invention is provided for use in an automobile seat, having a cushion and a seat back supported by a cushion through a recliner device for adjustment of the seat back angle about the cushion about the recliner pivot axis. It relates to a device for preventing whiplash damage.

One type of whiplash protection devices allows the seat back of the car seat to "yield" at least in a predetermined range in the event of a rear impact, thereby allowing a person to sit on the seat (also called an occupant). The torso and head will be accelerated in a less offensive manner than if the seat back is accelerated with the seated vehicle structure while the seat back is firm.

As such, different approaches have been proposed to facilitate surrendering the seat back.

One method is to allow the entire seat to tilt backwards by providing a fractural impression on the seat support, which in the rear impact situation is activated and controlled by momentary acting forces from the occupant's torso. Shear swelling is present at the seat support to allow the inclination of the entire seat to the rear.

Another approach provides a mechanical device between the seat support and the recliner mechanism such that the recliner mechanism and the seat back that it maintains surrender / reverse when a predetermined force is reached from the occupant against the rear seat as a result of the rear impact. To allow the slope. Such mechanical devices proposed represent a number of components and moving parts, which bring complexity in manufacturing costs and services. Such devices are also relatively bulky and protrude out of the seat, consuming space inside the vehicle. The number of mechanical parts of the device means that it is heavy, contrary to the general automotive industry's trend towards smaller, lighter cars that reduce fuel consumption and reduce costs.

It is therefore an object of the present invention to provide a device for preventing damage to whiplash as initially mentioned above, which at least somewhat mitigates or solves some of the above mentioned problems. This object is achieved by the present invention as defined in the appended dependent claims.

There is now proposed a whiplash protection device installed for use in a car seat, which is supported by a cushion via a recliner mechanism for adjustment of the seat back angle relative to the cushion around the recliner pivot axis and a cushion configured to be attached to the car structure. And a seat backrest, wherein the deflection damage prevention device comprises two interactive pivots installed to pivot relative to each other around the pivot axis when the force acting on the seat back as a result of the rear impact collision exceeds a predetermined threshold value. With the members, the wheeled-in damage prevention device is installed between the seat back and the recliner mechanism for adjusting the seat back. By positioning the whiplash protection device in this manner, it is possible to use the seat back volume, thus eliminating the need to increase the external size of the car seat.

The deflection damage prevention device pivot shaft may be installed to coincide with the recliner pivot shaft. The recliner pivot axis is always selected to provide ergonomically active adjustment of the seat back, which may be desirable to use the same axis for the whiplash protection device.

Moreover, the deflection damage prevention apparatus may be provided with energy absorbing means, which are installed to absorb energy when the two pivot members are pivoted with respect to each other. Such energy absorbing means can further reduce the potentially harmful effects on the person in the seat in the rear impact.

Such energy absorbing means may comprise deforming elements, which may be installed such that plastic deformation absorbs kinetic energy when the seat back yields.

The deformation elements can be practically attached to the pivot members, whereby the deformation elements can be replaced, for example due to the need or desire to change the plastic deformation or energy absorption properties.

The deformable elements may comprise two members which are coaxially mounted and connected to each other, at least in part one being located inside the other, the first of the two interconnected members being two pivot members. One is attached with torsion rigidity to one of the other, and the other of the two interconnected members is attached with torsional rigidity to the other of the two pivot members. Moreover, the axes of the two members coaxially installed and connected to each other may be installed to coincide with the pivot axes of the two interactive pivot members. Thus, the rear tilt movement of the seat back as a result of the rear impact will be around the same pivot axis as its comfort adjustment.

Moreover, the releasable locking means can be installed to lock the two pivot members together and the locking means can comprise release means configured to be activated in the event of a rear impact collision, thus releasing the locking means Allow interactive pivot members to pivot relative to each other. Thereby, even if the direction and magnitude of the force on the seat back exceeds the threshold value, it is possible to prevent some other unrelated forces acting on the seat back in other situations to yield to the seat back. Such extraneous force situations are, for example, when a person with a heavy weight in the back seat is using the seat back to move.

The release means can be actuated by the flame making device, which is in turn initiated by a signal from the pre-collision sensor device or the collision sensor device. Such flame making devices and sensor devices are known in the art and will not be described in detail herein.

The release means can alternatively be actuated by a mechanical linkage, for example installed inside the seat back, whereby a force applied to the seat back from the person sitting in the seat during a rear impact collision activates the release means and powers it. It is selected to connect and connected or delivered. Thereby a fully mechanical system can be achieved which is integrated into the seat back, without the need for electrical or flame technology.

The releasable locking means may comprise a retractable bolt, which cooperates with the two pivot members in the normal position to lock them together and in the retracted position the two mutually locked pivot members pivot relative to each other. Allow it to be. The bolt extends through holes configured to complement the two pivot members, for example in a normal position.

The present invention also includes a car seat configured to be attached to a vehicle, the seat having a cushion and a seat back supported by the cushion through a recliner device for adjusting the seat back angle to the cushion and preventing whiplash damage. The device includes two interactive pivot members arranged to pivot relative to each other around the pivot axis when a force exceeding a predetermined threshold value acts on the seat back as a result of a rear impact collision, causing the seat back to yield, The whiplash protection device is installed between the recliner device and the seat back.

Moreover, the present invention relates to a car seat configured to be attached to a vehicle, the seat being seated supported by a cushion through a recliner device for adjustment of the seat back angle for the cushion around the recliner pivot axis. The backlash prevention device includes two interactive pivot members installed to pivot relative to each other around the pivot axis when a force exceeding a predetermined threshold value acts on the seat back as a result of a rear impact collision. The seat back causes the surrender, and the pivot axes of the two pivot members are installed to coincide with the recliner pivot axes.

BRIEF DESCRIPTION OF THE DRAWINGS In order that the present invention may be readily understood and other features may be understood, the present invention will be described by way of example with reference to the accompanying drawings.

1 is a perspective view schematically showing a motor vehicle provided with a device for preventing whiplash damage according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating the whack damage preventing apparatus according to FIG. 1 in a normal state. FIG.
3 is an exploded perspective view of the components in the embodiment of FIG. 2;
Figure 4 schematically shows a plan view of a seat provided with a whiplash protection device according to an embodiment of the present invention in a rear impact situation.
5a shows a detailed view of the embodiment according to the invention in the rest / normal position, and FIG. 5b shows a detail view of the embodiment according to the invention in a situation in which surrender of the seat back begins.

Referring to FIG. 1, a car seat 1 is schematically shown. The seat 1 has a cushion 2 on which the passenger sits and a seat back 3 that leans back when the passenger sits on the seat forward in the vehicle longitudinal direction. The cushion is attached to the vehicle structure 4. Such attachments are known in the art and will therefore not be described herein any further.

In order to conveniently adjust the angle of the seat back 3 with respect to the cushion 2, a recliner mechanism 5 is provided between the structure of the cushion 2 and the structure of the back 3. Typically, in this example, there are two recliner devices in one seat, one on each side of the seat (installed on the left and right). It is of course also possible to have only one or two or more recliner devices depending on how the seat back and cushion are connected to each other. The recliner device offers the possibility of adjusting the seat back angle around the recliner pivot axis A, which is typically installed at right angles to the longitudinal direction of the motor vehicle.

The recliner device 5 typically shows a first bracket 6 installed to be firmly attached to the structure of the cushion 2 and a second bracket 7 installed to be firmly attached to the structure of the seat back 3. . Such recliner mechanisms are known in the art and will therefore not be described in further detail.

According to one embodiment of the invention, a whiplash protection device 10 is installed between the recliner device 5 and the seat back 3, one of which is installed on each side of the seat (left and right). .

Referring now to FIG. 2, the deflection damage prevention device 10 includes a first interaction pivot member 11 attached to a recliner back rest bracket 7 and a structure of the seat back 3. And a second interacting pivot member 12 attached thereto. The two interactive pivot members 11 and 12 are installed to pivot relative to each other in a rear impact situation around a pivot axis arranged perpendicular to the vehicle longitudinal direction.

Referring now to FIG. 3, the first interaction pivot member 11 further comprises a recliner bracket 11.1, which is intended to be firmly attached to the recliner back rest bracket 7, or an alternative to the present invention. In an embodiment of, it may be an integrated part.

The first interactive pivot member 11 has a circular tube portion 11. 2 protruding from the recliner bracket 11. 1, with its central axis coinciding with the joint pivot axis of the interactive pivot members 11, 12.

The second interactive pivot member 12 has a backrest rest bracket 12.1, which may be intended to be firmly attached to the structure of the seat back 3 or may be an integral part in an alternative embodiment of the invention. have.

The second interaction pivot member 12 further comprises a through hole configured to receive the tube portion 11. 2 protruding from the recliner bracket 11. 1 to form a pivot joint between the two pivot members 11, 12. do.

In some of today's seats, as in the seat of the present example, a physical connection is provided between the right and left recliner devices 5 to ensure that the two sides are synchronized when changing the seat back angle. . This connection is often provided by rods extending between the individual recliner mechanisms. The rod is often coincident with the recliner pivot axis.

By configuring the first interacting pivot member 11 such that synchronizing the rod between the two recliner devices can extend freely through the circular tube portion 11.2, the two pivot members are in contact with each other under normal circumstances. Releasable locking means are provided for locking. In this embodiment the locking means is a retractable bolt 13, preferably at a distance from the joint pivot axis and in close proximity through the pivot member 11; 12 to reduce the shear force acting on the bolt 13. It is extended by subsequent fitting.

The bolt 13 is installed to withdraw in such a situation so as to release the two pivot members in case of a rear impact. The bolt retraction in this embodiment is performed by placing the wire 14 between the bolt 13 on the right side of the seat and the bolt 13 on the left side of the seat. The wire 14 is disposed in the seat back 3 and is positioned and dimensioned with seat rest padding so that the occupant's torso compresses the seat back in the rearward direction as a result of the rear impact. Causing the central portion of the wire to be repositioned (because the wire is stretchable), whereby the bolts 13 attached to the ends of the wire are withdrawn so that the two interactive pivot members 11; It is allowed to pivot relative to each other.

Such release of the bolt 13 or other physical locking means may be provided by other actuators known in the industry in other embodiments, for example pyrotechnical devices, electromagnetic devices and the like. Such actuators may be initiated by signals from any collision detection system or pre-collision detection system. Such actuators and detection systems are well known in the industry and will therefore not be described any further.

It is preferable that energy absorbing means be provided so as to absorb energy when the two pivot members 11 and 12 are pivoted with respect to each other as a result of the rear impact. Such energy absorbing means may comprise two coaxially arranged and connected members, which are at least partially located inside one another and in each of one of the two pivot members 11; 12. Installed with torsion rigidity.

In an embodiment of the invention, the inner one of said interconnected members is said circular tube portion 11.2 of the first interacting pivot member 11. The outer side of the interconnected members is a circular tube portion 12.2 protruding from the backrest rest bracket 12.1, the central axis of which coincides with the joint pivot axis of the interactive pivot members 11, 12. The inner diameter of the outer tube portion 12.2 is larger than the outer diameter of the inner tube portion 11.2. In order to avoid flow, the dimensions need to be adapted to each other, and a low friction device or treatment can be provided. Some types of bearings may be considered.

To provide energy absorption, the two tube portions can be interconnected to form a torsion type fitting such that deformation or absence of the member as a result of the pivoting movement between the two pivot members 11; 12. Cause some deformation.

5A and 5B, in this embodiment, the outer tube portion 12.2 has a slightly curved lip 12.3 formed in the wall portion of the tubular member to adjust the energy absorption and yielding event. Weakening in form is provided. A rivet 15 is installed at the free end of the lip 12.3 and extends through the tube portion 11.2 to interconnect the two tubular portions.

Referring now to FIGS. 4 and 5, if a rear impact collision situation occurs, the torso 21 of the person sitting in the seat will exert a force on the seat back 3 as a result of the acceleration generated by the impact. The force will compress the seat back enough to actuate the wire 14 and penetrate it, thereby retracting the bolt 13 and freeing the pivot members 11, 12. Now the only thing that holds the two pivot members in place is the energy absorbing means constructed there by a lip 12.3 attached to the tubular portion 11.2 via the rivet 15.

When the force on the seat back 3 exceeds a predetermined value, the lip 12.3 begins to deform, thereby transforming the kinematic energy from the pivotal movement of the pivot members 11 and 12 into thermal energy. This means that the energy absorption can be adjusted by the design and dimensioning of the energy absorption means, in which the energy absorption means is a lip 12.3.

In the claims, the part numbers shown in parentheses are not intended to limit the claims. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim. The articles or definite articles described before the component do not exclude the presence of a plurality of such components.

1. car seat 2. cushion
3. Seat back 5. Recliner device
6. 1st bracket 7. 2nd bracket

Claims

A batter installed for use in an automobile seat having a cushion configured to be attached to the vehicle structure and a seat back supported by the cushion via a recliner device to adjust the seat back angle to the cushion about the recliner pivot axis. As a whiplash protection arrangement,
The deflection prevention device comprises a first interaction pivot member 11 having a protruding circular tubular portion 11.2 and a second interaction pivot having a aperture configured to receive the protruding circular tubular portion 11.2. A member 12 is provided to form a joint between the two pivot members 11 and 12, and the force acting on the seat back as a result of the rear impact collision results in a predetermined threshold value. When exceeding, the pivot members 11 and 12 are installed to pivot relative to each other about the pivot axis,
The whiplash protection device is installed between the seat back and the recliner mechanism (recliner mechanism) for adjusting the seat back, whiplash prevention device.

The method of claim 1,
And a pivot shaft is installed to coincide with the recliner pivot shaft.

The method according to claim 1 or 2,
The energy absorbing means is provided to absorb energy when the two pivot members are pivoted with respect to each other.

The method of claim 3, wherein
The energy absorbing means comprise deformable elements.

The method of claim 4, wherein
The deformable elements are provided for plastic deformation.

The method according to claim 4 or 5,
The deforming element is realistically attached to the pivot members.

The method according to any one of claims 4 to 6,
The deformable elements have two members coaxially arranged and connected to each other, the two members being at least partially positioned inside one of the other, the first of which is two pivoted Two of the two interconnected members attached to one of the members with torsion rigidity, the second of the two interconnected members attached to the other of the two pivot members with torsional rigidity, Wherein the axis of the members coincides with the pivot axis of the two interacting pivot members.

The method according to any one of claims 1 to 7,
A releasable locking means is provided to lock the two pivot members to each other, and the locking means further comprises release means configured to be activated in the event of a rear impact, so that the two pivot members with which the locking means interact with each other. A device for preventing whiplash damage, wherein the allowance to be pivoted is implemented.

The method of claim 8,
The release means is operated by the spark making device, the device for preventing whiplash damage.

The method according to claim 8 or 9,
The release means is actuated by a mechanical link arrangement inside the seat back such that the force applied to the seat back from the person sitting in the seat at the time of the rear impact is transmitted to activate the release means and power the release means. Damage prevention device.

The method according to claim 8 or 9,
The releasable locking means comprises a retractable bolt, the retractable bolt cooperates with the two pivot members in the normal position to lock the pivot members together and in the retracted position the two interactive pivot members are pivoted relative to each other. Allowed, whiplash damage prevention device.

A car seat configured to be attached to a car, wherein the car seat is:
A seat back supported by the cushion via a recliner mechanism for adjustment of the cushion and the angle of the seat back relative to the cushion,
The whiplash protection device is provided with two interactive pivot members mounted pivotally relative to each other around the pivot axis when a force exceeding a predetermined threshold value as a result of the rear impact, the seat back yields. car seat, which is allowed to yield, and wherein the whiplash protection device is installed between the recliner device and the seat back.

A car seat configured to be attached to a car, wherein the car seat is:
A cushion and a seat back supported by the cushion via a recliner mechanism for adjustment of the seat back angle to the cushion about the recliner pivot axis,
The whiplash protection device is provided with two interactive pivot members mounted pivotally relative to each other around the pivot axis when a force exceeding a predetermined threshold value as a result of the rear impact, the seat back yields. permitting, and wherein the two pivot members pivot axis are installed to coincide with the recliner pivot axis.