JP2005088675A - Occupant restraint system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant restraint system capable of preventing the chest region of an occupant from receiving a high pressure. <P>SOLUTION: Each of support stays 20 arranged at a head rest 18 in an occupant restraint system 10 extends in front of each of the shoulders of an occupant 14. Each of the support stays 20 is provided with a shoulder bag 24. In this case, since each of the support stays 20 is arranged at such a position as one where a contact between the head part of the occupant 14 and each of the shoulders is avoided, it is possible to prevent the occupant 14 from receiving an uncomfortable feeling by each of the support stays 20. In addition, when a vehicle collides, each of the shoulder air bags 24 is expanded to cause the occupant 14 to be restricted in a forward motion or upward motion of each of the shoulders. Due to this fact, in particular when the vehicle collides at its front side, it is possible to prevent the chest of the occupant 14 from being strongly pressured. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an occupant restraint device that restrains an occupant at a predetermined opportunity.

  As a passenger restraint device, there is a so-called shoulder seat belt. The shoulder seat belt is mounted on the front side of the occupant from the shoulder portion on one side to the waist portion on the other side, thereby restraining the occupant at the time of a vehicle collision.

  Here, in this shoulder seat belt, in recent years, a pretensioner mechanism for removing slack at the time of a vehicle collision is provided. Moreover, in recent years, the deceleration load at the time of a frontal collision of the vehicle tends to increase. For this reason, it is required that the chest of the occupant can be prevented from being subjected to strong compression (chest deflection compression) by the shoulder seat belt particularly at the time of a frontal collision of the vehicle.

  Further, it is required that an occupant can be prevented from slipping through the shoulder seat belt and moving laterally during a side collision and an oblique collision of the vehicle.

  Furthermore, during normal use of the vehicle, it is required that the occupant can be prevented from receiving discomfort (especially a feeling of pressure on the chest and a sliding contact with the neck) due to the wearing of the shoulder seat belt.

  Moreover, as a passenger | crew restraint apparatus, there exists an upper body protection structure in which the shoulder part protection bag body was accommodated in the upper part in a seat back (for example, refer patent document 1).

  In this upper body protection structure, the accommodation bag body is accommodated in the seat back below the shoulder protection bag body, and the accommodation bag body is connected to the shoulder protection bag body. Here, at the time of rear-end collision of the vehicle, the storage bag body is compressed by the load of the occupant, so that the shoulder protection bag body is bulged from the seat back to above the shoulder part of the occupant.

  However, in this upper body protection structure, it is considered that the shoulder protection bag body does not bulge out of the seat back because the housing bag body is not compressed by the occupant particularly at the time of frontal collision and side collision of the vehicle. The means for restraining the occupant's forward movement and lateral movement is unknown.

Here, even if the shoulder seat belt described above is added to the upper body protection structure, when the shoulder protection bag body does not bulge from the seat back (particularly at the time of frontal collision and side collision of the vehicle). There is a request similar to the above request for the shoulder seat belt.
JP 2000-95000 A

  An object of the present invention is to obtain an occupant restraint device that can prevent the occupant's chest from receiving strong compression at a predetermined opportunity in consideration of the above facts.

  The occupant restraint device according to claim 1 is provided in a support member that supports a rearward inclination of the occupant's upper body, and is provided in the extension member that extends from the support member to the front of the shoulder portion of the occupant. A shoulder restraining member that restrains the forward movement of the shoulder of the occupant by being inflated at a predetermined opportunity.

  The occupant restraint device according to claim 2 is characterized in that, in the occupant restraint device according to claim 1, when the vehicle is normally used, the extending member is disposed at a position where contact with the occupant is avoided. .

  The occupant restraint device according to claim 3 is the occupant restraint device according to claim 1 or 2, wherein the occupant restraint device includes a side restraint member that is provided on the extending member and restrains the lateral movement of the occupant at a predetermined opportunity. It is characterized by having.

  The occupant restraint device according to claim 4 is the occupant restraint device according to any one of claims 1 to 3, further comprising a waist restraint member that restrains the occupant's waist at a predetermined opportunity. It is a feature.

  The occupant restraint device according to claim 5 is the occupant restraint device according to claim 4, further comprising a head restraint member that is provided on the waist restraint member and restrains the forward tilt of the occupant's head at a predetermined opportunity. It is characterized by that.

  In the occupant restraint device according to claim 1, the extending member provided on the support member that supports the rearward inclination of the upper body of the occupant extends from the support member to the front of the shoulder of the occupant, and the extending member includes A shoulder restraining member is provided.

  Here, at a predetermined opportunity, the forward movement of the shoulder portion of the occupant is restrained by inflating the shoulder restraining member. For this reason, it can prevent that a passenger | crew's chest receives strong compression at a predetermined opportunity.

  In the occupant restraint device according to the second aspect, since the extending member is disposed at a position where contact with the occupant can be avoided during normal use of the vehicle, the occupant can be prevented from feeling uncomfortable by the extending member.

  In the occupant restraint device according to the third aspect, the lateral restraint member provided on the extending member restrains the lateral movement of the occupant at a predetermined opportunity, so that the occupant can be well protected.

  In the occupant restraint device according to the fourth aspect, since the waist restraining member restrains the occupant's waist at a predetermined opportunity, the restraining force of the occupant can be improved.

  In the occupant restraint device according to claim 5, the head restraint member provided on the waist restraint member restrains the forward tilt of the occupant's head at a predetermined opportunity, so that the occupant's head is well protected. Can do.

  FIG. 1 is a side view showing a main part of a vehicle seat 12 configured by applying an occupant restraint device 10 according to an embodiment of the present invention, and FIG. The main part of the seat 12 is shown in a front view when the vehicle collides. Further, in FIG. 3, the main part of the seat 12 is shown in a perspective view during normal use of the vehicle. In the present embodiment, the front of the occupant 14 seated on the seat 12 is referred to as “front”, the rear of the occupant 14 is referred to as “rear”, and the side of the occupant 14 is referred to as “side”.

  The seat 12 according to the present embodiment includes a seat back 16 constituting a support member, and the seat back 16 is erected substantially vertically to support the rearward inclination of the upper body other than the head of the occupant 14. . The seat 12 includes a headrest 18 that constitutes a support member, and the headrest 18 is supported above the seat back 16 to support the rearward inclination of the head of the occupant 14. The headrest 18 is movable in the vertical direction with respect to the seat back 16, and thereby the height position of the headrest 18 can be adjusted.

  The occupant restraint device 10 according to the present embodiment includes support stays 20 as extending members on both sides of the headrest 18, and each support stay 20 has a rigid body and a substantially L-shaped bar shape. . The base end of each support stay 20 is attached to each side portion of the headrest 18, and the height position of the headrest 18 is adjusted as described above. It arrange | positions above a shoulder part, and the front end side of each support stay 20 is extended to the front of each shoulder part of the passenger | crew 14. As shown in FIG. Thereby, it is avoided that the head of the passenger | crew 14 contacts with each support stay 20. FIG. Further, the base ends of the support stays 20 are integrated by a rod-like connection member 22 provided in the headrest 18, and the connection member 22 is a rigid body.

  Each support stay 20 is configured to be rotatable about the base end by at least one of manual operation and automatic operation by a motor drive, the base end can be expanded and contracted laterally, and the base end side is a longitudinal direction (front-rear direction) ) At least one configuration that can be expanded and contracted. As a result, when the occupant 14 is seated on and off from the seat 12 (when the occupant 14 is getting on and off the vehicle), the support stays 20 are rotated around the base end by the manual or automatic operation. Accordingly, the support stays 20 are prevented from being blocked by the support stays 20 by at least one of the expansion and contraction in the direction and the expansion and contraction in the longitudinal direction of the base end side. The support stays 20 can be easily attached to and detached from the occupant 14.

  Each support stay 20 is provided with a shoulder airbag 24 (bag body) as a shoulder restraining member and a side restraining member, and each shoulder airbag 24 has a proximal end from the rear surface on the distal end side of each support stay 20. It arrange | positions in the state folded over the side lower surface. As a result, the shoulders of the occupant 14 are prevented from coming into contact with the support stays 20 by the shoulder airbags 24, and the shoulder airbags 24 are sandwiched between the support stays 20 and the seat backs 16. The shoulders of the occupant 14 are hardly restrained by the shoulder airbags 24.

  The occupant restraint device 10 is provided with a lap seat belt 26 as a waist restraining member at the lower part of the seat back 16, and the lap seat belt 26 is mounted on the front side of the waist of the occupant 14 from the right side to the left side.

  The lap seat belt 26 includes a lap airbag 28 (bag body) as a head restraining member, and the lap airbag 28 is provided at a portion of the lap seat belt 26 located at the center of the left and right of the waist of the occupant 14. Arranged in a folded state.

  Here, at the time of a vehicle collision (predetermined opportunity), each shoulder airbag 24 is inflated (deployed) toward each shoulder of the occupant 14 so that the shoulder 14 of the occupant 14 moves forward and upward. In addition to being restrained, each shoulder airbag 24 is also inflated (deployed) toward each side of the head of the occupant 14 and restrains lateral movement (including lateral inclination) of the head of the occupant 14. . Further, in the case of a frontal collision of the vehicle, the longitudinal length of the base end side of each support stay 20 is subsequently accompanied with the contraction of each shoulder airbag 24 or independently of the contraction of each shoulder airbag 24. At least one of the extension in the direction and the upward rotation around the proximal end gradually releases the restraint of each shoulder portion of the occupant 14 by each shoulder airbag 24.

  When the vehicle collides, the lap seat belt 26 restrains the front and side movements of the waist of the occupant 14 and the lap airbag 28 is inflated (deployed) toward the front of the chest of the occupant 14 to occupant. The configuration is such that the forward tilt of the 14 heads can be restrained.

  Next, the operation of the present embodiment will be described.

  In the occupant restraint device 10 configured as described above, each support stay 20 provided on the headrest 18 extends from the headrest 18 to the front of each shoulder portion of the occupant 14, and a shoulder airbag 24 is provided on each support stay 20. Is provided.

  Here, during normal use of the vehicle, each support stay 20 is disposed at a position where contact with the head and shoulders of the occupant 14 is avoided, so that the occupant 14 is uncomfortable with each support stay 20. Can be prevented.

  Furthermore, since the feeling of pressure that each shoulder portion of the occupant 14 receives by each shoulder airbag 24 is almost eliminated, the occupant 14 can be prevented from feeling uncomfortable by each shoulder airbag 24.

  Further, when the vehicle collides, each shoulder airbag 24 is inflated, so that the forward movement and upward movement of each shoulder portion of the occupant 14 are restrained. For this reason, it is possible to prevent the chest of the occupant 14 from being subjected to strong compression (chest deflection compression) particularly during a frontal collision of the vehicle.

  In addition, when the vehicle collides, each shoulder airbag 24 is inflated to restrain lateral movement (including side inclination) of the head of the occupant 14. Therefore, the head of the occupant 14 can be well protected particularly during a side collision and a slant collision of the vehicle.

  Furthermore, at the time of a vehicle collision, the lap seat belt 26 restrains the forward movement and the lateral movement of the waist of the occupant 14. For this reason, the restraining force of the passenger | crew 14 can be improved.

  Further, when the vehicle collides, the lap airbag 28 provided on the lap seat belt 26 is inflated toward the front of the chest of the occupant 14. By the way, at the time of frontal collision of the vehicle, each shoulder airbag 24 is inflated, and then each shoulder stays by at least one of extending in the longitudinal direction on the base end side of each support stay 20 and rotating upward about the base end. The restraint of each shoulder portion of the occupant 14 by the airbag 24 is gradually released. For this reason, even if each shoulder portion of the occupant 14 is restrained gradually by the shoulder airbag 24, the wrap airbag 28 can be restrained from restraining the forward inclination of the head of the occupant 14, so The head can be well protected.

  In the present embodiment, the support stay 20 is provided on the headrest 18, but the support stay (extending member) may be provided on the seat back.

  In the present embodiment, the support stays 20 are integrated with the connection members 22 and the support stays 20 and the connection members 22 are rigid. However, the support stays (extension members) are A separate structure or a structure in which each support stay or connection member is a soft body may be used.

  Furthermore, in the present embodiment, each support stay 20 has at least a configuration that can rotate around the base end, a configuration that allows the base end to expand and contract sideways, and a configuration that allows the base end side to expand and contract in the longitudinal direction. Although only one configuration is adopted, only a support stay (extension member) on the seating and leaving side of the occupant with respect to the seat can be rotated about the base end, the base end can be expanded and contracted to the side, and It is good also as at least 1 structure of the structure which a base end side can expand-contract in a longitudinal direction.

  Further, in the present embodiment, the shoulder airbag 24 is provided on the outer surface of the support stay 20, but the shoulder airbag (shoulder restraining member and side restraining member) is provided inside the support stay (extending member). It is good also as a provided structure.

  Furthermore, in the present embodiment, the shoulder airbag 24 is configured to be inflatable only toward the shoulder and head of the occupant 14, but the shoulder airbag (shoulder restraint member and side restraint member) It is good also as a structure which can be expanded toward arbitrary directions (all the circumferences of a support stay (extension member)).

  In the present embodiment, the lap airbag 28 is provided inside the lap seat belt 26, but the wrap airbag (head restraining member) is provided on the outer surface of the lap seat belt (waist restraining member). It is good also as a structure.

It is a side view at the time of the vehicle collision which shows the principal part of the seat which concerns on embodiment of this invention. It is a front view at the time of the vehicle collision which shows the principal part of the seat which concerns on embodiment of this invention. It is a perspective view at the time of vehicle normal use which shows the principal part of the seat which concerns on embodiment of this invention.

Explanation of symbols

10 occupant restraint device 14 occupant 16 seat back (supporting member)
18 Headrest (support member)
20 Support stay (stretched member)
24 Shoulder airbag (shoulder restraint member and side restraint member)
26 Wrap belt (waist restraining member)
28 Wrap airbag (head restraint member)

Claims (5)

An extension member that is provided on a support member that supports the rearward inclination of the upper body of the occupant and extends from the support member to the front of the shoulder of the occupant;
A shoulder restraining member which is provided in the extending member and restrains the forward movement of the occupant's shoulder by being inflated at a predetermined opportunity;
An occupant restraint device.   The occupant restraint device according to claim 1, wherein the extending member is disposed at a position where contact with the occupant is avoided during normal use of the vehicle.   The occupant restraint device according to claim 1, further comprising a side restraint member that is provided on the extending member and restrains the occupant's lateral movement at a predetermined opportunity.   The occupant restraint device according to any one of claims 1 to 3, further comprising a waist restraining member that restrains the occupant's waist at a predetermined opportunity.   The occupant restraint device according to claim 4, further comprising a head restraint member that is provided on the waist restraint member and restrains a forward inclination of the occupant's head at a predetermined opportunity.

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