JP2010105544A - Occupant restraint device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant restraint device capable of enhancing occupant restraint performance as compared with conventional one. <P>SOLUTION: The occupant restraint device includes: a seat belt 20; a band body 30; an interlocking mechanism 40 for interlocking the band body 30 to the motion of the seat belt 20 when the seat belt 20 is attached; and an airbag device 50 provided with an airbag 52 stored in the band body 30 and capable of being deployed from the band body 30 into a cabin. Therefore, the band body 30 is interlocked with the interlocking mechanism 40 when the seat belt 20 is attached, thereby the occupant P can be restrained not only by the seat belt 20 but also by the band body 30. Further, since the device has the airbag device 50 provided with the airbag 52 stored in the band body 30 and capable of being deployed from the band body 30 into the cabin, the occupant P can be restrained by the seat belt 20, the band body 30, and the airbag 52 at collision. Thereby, the occupant restraint performance at collision can be improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an occupant restraint device having a seat belt and an airbag device.

  Patent Document 1 discloses an occupant restraint device that has a pipe disposed above an occupant and an airbag attached to the pipe, and that deploys so that the airbag surrounds the front and sides of the occupant at the time of a collision. is doing.

However, the conventional occupant restraint device has the following problems.
Despite having the pipe and the airbag, the occupant is restrained only by the airbag at the time of collision, so there is room for improvement in order to improve the occupant restraint performance.
Special table 2000-344044 gazette

  The objective of this invention is providing the passenger | crew restraint apparatus which can improve passenger | crew restraint performance compared with the past.

The present invention for achieving the above object is as follows.
(1) [Examples 1 and 2]
(A) a seat belt comprising a shoulder belt portion and a lap belt portion when the belt is worn;
(B) The seat back is movable in the vertical direction and extends in the width direction of the vehicle, and extends from the end of the width direction of the extension toward the upper portion of the seat back. A band provided with a side part attached to the upper part of
(C) an interlocking mechanism for interlocking the belt body with the movement of the seat belt when the seat belt is mounted;
(D) an airbag device comprising an airbag stored in the belt and deployable from the belt to the vehicle interior;
An occupant restraint device.
(2) [Examples 1 and 2]
The side of the band extends from the vehicle inner end of the band extending in the width direction toward the vehicle inner upper portion of the seat back and is attached to the vehicle inner upper portion of the seat back at the end of the seat back. The occupant restraint device according to (1), including a side portion.
(3) [Example 1]
The side portion of the belt body further extends from the vehicle outer side end portion of the belt body extending in the width direction toward the vehicle outer side upper portion of the seat back, and is attached to the vehicle outer side upper portion of the seat back at the end portion on the seat back side. The occupant restraint device according to (2), including an outer side portion.
(4) [Examples 1 and 2]
A part of the airbag of the airbag device enters the seat back from the end of the belt body on the side of the seat back, and can be deployed from the seat back into the vehicle interior. (1) The occupant restraint device described.
(5) [Examples 1 and 2]
The occupant restraint device according to (1), wherein the interlocking mechanism includes a loop portion provided in a width direction extending portion of the belt body and through which the seat belt is inserted.

  According to the occupant restraint device of (1) above, the belt body is movable in the vertical direction, and has an interlocking mechanism for interlocking the belt body with the movement of the seat belt when the seat belt is worn. The occupant can be restrained not only by the seat belt but also by the belt body by interlocking the belt body when the vehicle is worn. Further, since the airbag apparatus including the airbag stored in the belt body and deployable from the belt body into the vehicle interior, the occupant can be restrained by the seat belt, the belt body, and the airbag in the event of a collision. Therefore, the occupant restraint performance at the time of collision can be improved as compared with the conventional case.

  According to the occupant restraint device of (2) above, the side of the belt extends from the vehicle inner end of the width extending portion of the belt toward the vehicle inner upper portion of the seat back, and the seat at the end of the seat back. Since it has a vehicle inner side part that is attached to the upper part of the vehicle inside of the back, it is possible to suppress the movement of a passenger sitting on the seat far away from the collision to the collision side at the time of a side collision, and at the time of a far side collision The occupant restraint performance can be improved.

  According to the occupant restraint device of (3) above, since the side part of the belt body is provided with the vehicle outer side part, the side part of the belt body is only the vehicle inner side part and not provided with the vehicle outer side part. The occupant restraint performance by the belt body can be improved.

  According to the occupant restraint device of (4) above, a part of the airbag of the airbag device enters the seat back from the end portion of the side of the belt body on the seat back side, and from the seat back to the vehicle interior. Compared to the case where the airbag is stored only in the belt body, the airbag can be deployed by wrapping it to the side of the seat back, and the airbag can be deployed in the seat back. Can be regulated.

  According to the occupant restraint device of (5) above, since the interlocking mechanism includes a loop portion that is provided in the width direction extending portion of the belt body and through which the seat belt is inserted, the movement of the seat belt when the seat belt is worn. The belt can be linked to

  Hereinafter, an occupant restraint device (hereinafter also simply referred to as a restraint device) according to an embodiment of the present invention will be described with reference to FIGS. In the figure, FR indicates the front of the vehicle, IN indicates the vehicle inner side (vehicle lateral direction center side), OUT indicates the vehicle outer side (vehicle lateral direction outer side), and UP indicates the upper side.

FIGS. 1-11 has shown the passenger | crew restraint apparatus of Example 1 of this invention, and FIGS. 12-20 has shown the passenger | crew restraint apparatus of Example 2 of this invention. However, FIGS. 10 and 11 are also applicable to the second embodiment of the present invention.
Portions common to the first and second embodiments of the present invention are denoted by the same reference numerals throughout the first and second embodiments of the present invention.

[Example 1] (FIGS. 1 to 11)
First, the configuration of the first embodiment of the present invention will be described. Although the figure shows the case where the seat is a driver's seat, the seat may be a passenger seat or a rear seat.
An occupant restraint device (hereinafter also simply referred to as a restraint device) 10 according to Embodiment 1 of the present invention is provided to restrain (protect) an occupant P seated on the seat 1, and as shown in FIG. The seat belt 20, the belt 30, the interlocking mechanism 40, and the airbag device 50 are included.

  The seat 1 includes a seat cushion 1a on which the occupant P is seated, a seat back 1b that is used as a backrest of the occupant P disposed at a rear end of the seat cushion 1a, and a seat back 1b that is provided above the seat back 1b. A headrest 1c that supports the head from the rear side of the vehicle.

  The seat belt 20 may be a three-point seat belt or a four-point seat belt (not shown). In the case of the three-point type, the seat belt 20 is composed of a single webbing 21, and extends from the upper outside of the vehicle to the lower inside of the vehicle when the belt is worn, and a shoulder belt portion 22 positioned in front of the chest of the occupant P, and the belt wearing And a lap belt portion 23 located at the front waist of the occupant P. One end in the longitudinal direction of the seat belt 20 is connected to a retractor 24 that is disposed on the pillar 2 of the vehicle and fixed to the vehicle, and the other end in the longitudinal direction of the seat belt 20 is located outside the seat cushion 1a. It is being fixed to the lap outer anchor 25 arrange | positioned from the seat cushion 1a to the vehicle back.

  The retractor 24 is provided with a pretensioner and a force limiter (not shown). Since the pretensioner is provided, when the seat belt 20 is automatically wound up by the retractor 24 when a collision is detected, the restraint start of the occupant P by the seat belt 20 can be accelerated. Further, since the force limiter is provided, the restraint of the seat belt 20 is loosened so that no more tension is generated in the seat belt 20 when the seat belt 20 is subjected to a tension higher than a predetermined tension due to a collision. Thus, the load on the occupant P from the seat belt 20 can be reduced.

The seat belt 20 extends upward from the retractor 24 in the pillar 2 and is fixed to a passenger P seated on the seat 1 (an occupant of the AM 50) or a pillar 2 above and behind the seat 1 and fixed to the slip joint 26. It extends into the passenger compartment via
A tongue plate 28 that can be engaged with and disengaged from a buckle 27 provided in the lower side of the vehicle interior is attached to the seat belt 20 so as to be movable (slidable) in the longitudinal direction of the seat belt 20. The seat belt 20 is attached / released by engaging / disengaging the tongue plate 28 with the buckle 27.

The band 30 is made of resin and has elasticity. The band body 30 extends in the vehicle width direction and extends from the vehicle width direction end portion of the width direction extension portion 31 toward the upper portion of the seat back 1b (upper portion from the center in the vertical direction of the seat back 1b). Side part 32.
The band 30 is attached to the upper end of the upper portion of the seat back 1b at the end of the side portion 32 on the seat back 1b side. The side portion 32 is fixedly attached to the upper portion of the seat back 1b. However, the side part 32 may be attached to the upper part of the seat back 1b so that rotation in the up-down direction is possible.

  The band 30 is movable in the vertical direction by being elastically deformed. However, when the side portion 32 is attached to the seat back 1b so as to be pivotable in the vertical direction, the belt 30 can be moved in the vertical direction by both its elastic deformation and pivoting with respect to the seat back 1b. It is said that.

  7 to 9, when the seat belt 20 is not worn, the belt body 30 is in a state of being repelled upward by its own elastic force (the width direction extending portion 31 is on the roof side of the vehicle). It is in a state of being lifted up so as to approach.) When the seat belt 20 is worn, the band 30 is in a state of being pulled down against its own elastic force as shown in FIG. 4, and the widthwise extending portion 31 is positioned in front of the occupant P's chest. However, the side 32 is placed on the shoulder from the front of the chest.

The interlocking mechanism 40 is a mechanism that interlocks the belt 30 with the movement of the seatbelt 20 when the seatbelt 20 is worn. The interlocking mechanism 40 includes a loop portion 41 provided in the width direction extending portion 31 of the band 30.
The loop portion 41 is positioned in front of the left and right central portions of the chest of the occupant P when the belt body 30 is pulled down against its own elastic force and the widthwise extending portion 31 is positioned in front of the occupant P's chest. It is provided in the width direction extending portion 31 portion. When the belt body 30 is pulled down against its own elastic force and the width direction extending portion 31 is positioned in front of the chest of the occupant P, the loop portion 41 penetrates the width direction extending portion 31 in the vertical direction. It may be provided, may be provided penetrating in the front-rear direction, or may be provided penetrating in other directions. A portion between the slip joint 26 and the tongue plate 28 of the seat belt 20 (the shoulder belt portion 22 when the belt is mounted) is inserted in the loop portion 41 so as to be slidable in the longitudinal direction of the seat belt 20.

  As shown in FIG. 10, the airbag device 50 includes an inflator 51 and an airbag 52 that is folded during storage and is deployed in the vehicle interior by gas ejected (supplied) from the inflator 51. .

The inflator 51 is fixedly disposed in the seat back 1b. The inflator 51 may be disposed at the upper part of the seat back 1b, but is desirably disposed at the lower part of the seat back 1b (a part below the center in the vertical direction of the seat back 1b). This is because the occupant P seated on the seat 1 can be prevented from hitting the inflator 51.
The gas from the inflator 51 is supplied into the airbag 52 by integrally providing a tube portion that extends to the inflator 51 in the airbag 52 or by using a tube 51 a that is separate from the airbag 52. . In addition, as shown in FIG. 11, the structure from which the gas from the inflator 51 is directly supplied in the airbag 52 by directly clamping and connecting the airbag 52 and the inflator 51 may be sufficient.

The airbag 52 is folded and stored (attached) in the band 30 over the entire region or substantially the entire region in the extending direction of the band 30 when not deployed. In addition, a part of the airbag 52 enters the seat back 1b from the end of the side portion 32 of the band 30 on the side of the seat back 1b, and is folded and stored in the seat back 1b. (Installed). A portion of the airbag 52 that is stored in the belt body 30 breaks a part of the belt body 30 and develops into the vehicle interior from the broken portion. A portion of the airbag 52 that is stored in the seat back 1b breaks a part of the skin of the seat back 1b, and expands into the vehicle interior from the broken portion.
The above configuration is also applied to the second embodiment of the present invention.

  In the first embodiment of the present invention, as shown in FIGS. 1, 4 and 7, the side portion 32 of the band 30 is located on the vehicle interior side of the seat back 1b from the vehicle inner end of the width direction extending portion 31 of the band 30. A seat back extends from the vehicle inner side portion 32a attached to the upper end portion of the vehicle interior upper portion of the seat back 1b at the end portion on the seat back 1b side extending toward the upper portion, and the vehicle outer end portion of the width direction extending portion 31 of the belt 30 A vehicle exterior side portion 32b that extends toward the vehicle exterior upper portion of 1b and is attached to an upper end portion of the vehicle exterior upper portion of the seat back 1b at an end portion on the seat back 1b side. The band 30 is U-shaped or substantially U-shaped to open to the seat back 1b side.

Next, the operation of the first embodiment of the present invention will be described.
(I) When the belt is not worn (FIGS. 7 to 9)
A portion of the seat belt 20 between the slip joint 26 and the lap outer anchor 25 passes through the loop portion 41. The tongue plate 28 is not engaged with the buckle 27 and is in contact with a stopper (not shown) provided in the seat belt 20 portion between the loop portion 41 and the lap outer anchor 25.
The band 30 is in a state of being repelled upward by its own elastic force. The width direction extending part 31 of the band 30 is located above the occupant P and the seat 1. The side part 32 of the band 30 is in a posture extending upward from the seat back 1b, and is positioned behind the occupant P from the head of the occupant P and at the side of the headrest 1c.

(Ii) When the occupant P moves the buckle 27 in order to engage the tongue plate 28 with the buckle 27 when the belt is mounted, the belt 30 is attached to the belt 30 by the seat belt 20 inserted through the loop portion 41. Pulled down against elastic force.
As shown in FIGS. 4 to 6, when the occupant P engages the tongue plate 28 with the buckle 27 and completes the belt mounting, the widthwise extending portion 31 of the band 30 is positioned in front of the occupant P's chest (chest ), The side portion 32 is placed on the shoulder from the front of the chest, and the belt body 30 restrains the occupant P together with the seat belt 20.

(Iii) At the time of collision (FIGS. 1 to 3)
The airbag 52 is deployed from the belt body 30 and the seat back 1b into the vehicle interior. The airbag 52 is deployed so as to cover the occupant P from the front and the side. The airbag 52 is also deployed around the side of the seat back 1b. Therefore, the occupant P is restrained by the seat belt 20, the belt body 30, and the airbag 52.
The above operation of the first embodiment of the present invention is also applied to the second embodiment of the present invention.

Next, functions and effects of the first embodiment of the present invention will be described.
Since the belt body 30 is movable in the vertical direction, and has the interlocking mechanism 40 that interlocks the belt body 20 with the movement of the seat belt 20 when the seat belt 20 is worn, the belt body 30 is worn when the seat belt 20 is worn. The body 30 can be interlocked. Therefore, the occupant P can be restrained not only by the seat belt 20 but also by the belt 30 while making no additional operation necessary. Further, since the airbag apparatus 50 includes the airbag 52 that is stored in the band body 30 and can be deployed from the band body 30 into the vehicle interior, the occupant P is secured by the seat belt 20, the band body 30, and the airbag 52 in the event of a collision. Can be restrained. Therefore, the occupant restraint performance at the time of collision can be improved as compared with the conventional case.

  The side portion 32 of the belt body 30 extends from the vehicle inner end portion of the width direction extending portion 31 of the belt body 30 toward the vehicle inner top portion of the seat back 1b, and the vehicle back upper portion of the seat back 1b at the end portion on the seat back 1b side. Since the vehicle body side portion 32a is attached to the vehicle, the belt 30 can suppress the movement of the occupant P sitting on the seat 1 on the side far from the collision at the time of a side collision to the collision side. The occupant restraint performance can be improved.

  A portion of the airbag 52 enters the seat back 1b from the end portion of the side portion 32 of the belt 30 on the seat back 1b side, and can be deployed from the seat back 1b into the vehicle interior. Compared with the case where 52 is stored only in the belt body 30, the airbag 52 can be deployed by being wrapped around the side of the seat back 1b, and the deployment posture of the airbag 52 is regulated by the seat back 1b. Can do.

  Since the interlocking mechanism 40 includes the loop portion 41 provided in the width direction extending portion 31 of the belt body 30 and through which the seat belt 20 is inserted, the belt body 30 is moved by the movement of the seat belt 20 when the seat belt 20 is worn. Can be linked.

  Since the belt body 30 is in a state of being pulled down against its own elastic force when the seat belt 20 is worn, the seat belt 20 is worn and the occupant P is restrained by the seat belt 20 and the belt body 30. At this time, the feeling of pressure felt by the occupant P by the belt 30 and the seat belt 20 can be reduced by the force with which the belt 30 repels upward.

  When the belt is not attached, the widthwise extending portion 31 of the belt 30 is positioned above the occupant P and the seat 1, and the side portion 32 of the belt 30 is occupant on the side of the head of the occupant P and the headrest 1c. Since it is located behind the vehicle from the head of P, it is possible to prevent the belt 30 from getting in the way when the occupant P gets on and off the vehicle.

Since the seat belt 20 portion between the slip joint 26 and the lap outer anchor 25 passes through the loop portion 41 when the belt is not attached, the tongue is smaller than when the seat belt 20 does not pass through the loop portion 41. The plate 28 can be positioned inside the vehicle. Therefore, the occupant P sitting on the seat 1 can easily grasp the tongue plate 28.
The above operations and effects of the first embodiment of the present invention are also applied to the second embodiment of the present invention.

In the first embodiment of the present invention, since the side portion 32 of the band 30 includes the vehicle outer side portion 32b, the side portion 32 of the band body includes only the vehicle inner side portion 32a and does not include the vehicle outer side portion 32b. Compared with the case, the passenger | crew restraint performance by the strip | belt body 30 can be improved.
Since the side portion 32 of the belt body 30 includes the vehicle outer side portion 32b, it is possible to prevent the occupant P sitting on the seat 1 on the side close to the collision at the time of a side collision from moving to the collision side. Restraint performance can be improved.

[Example 2] (FIGS. 12 to 20)
Next, portions of the second embodiment of the present invention that are mainly different from the first embodiment of the present invention will be described.
In the embodiment 2 of the present invention, the side portion 32 of the band 30 includes the vehicle interior side portion 32a, and does not include the vehicle exterior side portion 32b described in the embodiment 1 of the present invention. That is, the side part 32 of the belt body 30 consists only of the vehicle inner side part 32a.

  In the second embodiment of the present invention, since the side portion 32 of the belt body 30 is composed only of the vehicle inner side portion 32a, the occupant P has a belt body as compared with the case where the vehicle outer side portion 32b described in the first embodiment of the present invention is provided. The feeling of pressure felt from 30 can be reduced. Further, the material required for the band 30 can be reduced, which is advantageous in terms of cost.

It is a front view at the time of the collision of the passenger | crew restraint apparatus of Example 1 of this invention. It is a top view at the time of the collision of the passenger | crew restraint apparatus of Example 1 of this invention. It is a side view at the time of the collision of the passenger | crew restraint apparatus of Example 1 of this invention. It is a front view at the time of belt wearing at the time of the non-collision of the passenger | crew restraint apparatus of Example 1 of this invention. It is a top view at the time of belt wearing at the time of the non-collision of the passenger | crew restraint apparatus of Example 1 of this invention. It is a side view at the time of belt wearing at the time of the non-collision of the passenger | crew restraint apparatus of Example 1 of this invention. It is a front view at the time of belt non-wearing of the crew member restraint device of example 1 of the present invention. It is a top view at the time of the belt non-wearing of the passenger | crew restraint apparatus of Example 1 of this invention. It is a side view at the time of the belt non-wearing of the passenger | crew restraint apparatus of Example 1 of this invention. It is a partial expanded front view of a seat back, a belt, and an air bag device when the belt is not attached to the occupant restraint device of the first embodiment of the present invention. It is a partial expanded front view of a seat back, a belt, and an air bag device when the belt is not attached to the occupant restraint device of the first embodiment of the present invention. It is a front view at the time of the collision of the passenger | crew restraint apparatus of Example 2 of this invention. It is a top view at the time of the collision of the passenger | crew restraint apparatus of Example 2 of this invention. It is a side view at the time of the collision of the passenger | crew restraint apparatus of Example 2 of this invention. It is a front view at the time of belt wearing at the time of the non-collision of the passenger | crew restraint apparatus of Example 2 of this invention. It is a top view at the time of belt wearing at the time of the non-collision of the passenger | crew restraint apparatus of Example 2 of this invention. It is a side view at the time of belt wearing at the time of the non-collision of the passenger | crew restraint apparatus of Example 2 of this invention. It is a front view at the time of the belt non-wearing of the passenger | crew restraint apparatus of Example 2 of this invention. It is a top view at the time of the belt non-wearing of the passenger | crew restraint apparatus of Example 2 of this invention. It is a side view at the time of the belt non-wearing of the passenger | crew restraint apparatus of Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 1a Seat cushion 1b Seat back 1c Headrest 2 Pillar 10 Passenger restraint device 20 Seat belt 21 Webbing 22 Shoulder belt part 23 Lap belt part 24 Retractor 25 Lap outer anchor 26 Slip joint 27 Buckle 28 Tang plate 30 Band 31 Width direction extension part 32 Band side part 32a Car inner side part 32b Car outer side part 40 Interlocking mechanism 41 Loop part 50 Inflator device 51 Inflator 52 Air bag P Crew

Claims (5)

(A) a seat belt comprising a shoulder belt portion and a lap belt portion when the belt is worn;
(B) The seat back is movable in the vertical direction and extends in the width direction of the vehicle, and extends from the end of the width direction of the extension toward the upper portion of the seat back. A band provided with a side part attached to the upper part of
(C) an interlocking mechanism for interlocking the belt body with the movement of the seat belt when the seat belt is mounted;
(D) an airbag device comprising an airbag stored in the belt and deployable from the belt to the vehicle interior;
An occupant restraint device.   The side of the belt extends from the vehicle inner end of the width direction extending portion of the belt toward the vehicle inner upper portion of the seat back and is attached to the vehicle inner upper portion of the seat back at the seat back end. The occupant restraint device according to claim 1, comprising a side portion.   The side portion of the belt body further extends from the vehicle outer side end portion of the belt body extending in the width direction toward the vehicle outer side upper portion of the seat back, and is attached to the vehicle outer side upper portion of the seat back at the end portion on the seat back side. The passenger | crew restraint apparatus of Claim 2 provided with a vehicle outer side part.   A part of the airbag of the airbag device enters the seat back from an end portion of the side of the belt body on the seat back side, and can be deployed from the seat back into the vehicle interior. The occupant restraint device described.   The occupant restraint device according to claim 1, wherein the interlocking mechanism includes a loop portion provided in a width direction extending portion of the belt body and through which the seat belt is inserted.

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