JP2008143280A - Side airbag device - Google Patents

Abstract

An airbag bag body can be deployed at an appropriate position corresponding to a shoulder portion of a seated person regardless of the height position or width position of the shoulder section of the seated person having different physiques. Provided is a side airbag device that can be downsized.
When a headrest 3C is vertically adjusted according to the height of the head of a seated person P having a different physique, a storage case 5C of an airbag bag body 5B for a shoulder portion is seated on the seated person P by an interlocking support mechanism. The position is adjusted in the vertical and horizontal directions corresponding to the height position and width position of the shoulder portion. As a result, when the vehicle receives a side collision, the shoulder airbag bag body 5B can be deployed at an appropriate position corresponding to the shoulder of the seated person P, and the shoulder of the seated person P can be accurately positioned. Can be restrained. And it becomes possible to miniaturize the airbag part 5B for shoulder parts.
[Selection] Figure 1

Description

  The present invention relates to a side airbag device that protects a seat occupant from an impact when a vehicle receives a side collision.

  2. Description of the Related Art A side airbag device that protects a seat occupant from an impact when a vehicle receives a side collision is generally known. And as this kind of side airbag device, it is supported by the headrest of the seat, the airbag body that supports the head of the seated person at the time of deployment, and the seatback of the seated person by being supported by the seat back of the seat. There are known an air bag body that supports the side of the chest independently, and an air bag body that is integrally provided with these (see, for example, Patent Document 1).

Here, in Patent Document 1, in the airbag body provided integrally with the airbag body for the head and the airbag body for the body part, the lowermost support height with respect to the seat back is set to the shoulder height of the seated person. It is disclosed that the height is taken into consideration.
Japanese Patent No. 3716535 (paragraphs 0003, 0005, 0007, FIGS. 19, 20, paragraphs 0049-0052, FIGS. 1-5)

  By the way, the airbag body that supports the side portion of the chest of the seated person disclosed as a conventional example in Patent Document 1 has a fixed support position with respect to the seat back. It cannot be restrained reliably. In particular, there is a problem that the restraint property of the seated person is low because the shoulder part cannot be restrained accurately according to the size of the seated person.

  However, in the airbag body that is integrated with the airbag body for the head and the airbag body for the body, the shoulder of the seated person with high impact resistance is accurately restrained regardless of the size of the seated person. However, in this case, there is a problem that the airbag body becomes unnecessarily large.

  Therefore, the present invention can deploy the airbag bag body at an appropriate position corresponding to the shoulder portion of the seated person regardless of the height position or width position of the shoulder portion of the seated person having different physiques. It is an object of the present invention to provide a side airbag device capable of downsizing a bag bag body.

  A side airbag device according to a first aspect of the present invention is a side airbag device including an airbag bag body that is deployed between a shoulder portion of a seat occupant and a side passenger compartment surface, The bag storage case is supported on the seat back of the seat so that its position can be adjusted in the vertical direction.

  In the side airbag device according to the first invention, the physique is adjusted when the vehicle receives a side collision by adjusting the position of the storage case in the vertical direction corresponding to the height position of the shoulder portion of the seated person. The airbag bag body is deployed at an appropriate position corresponding to the shoulder of the seated person regardless of the height of the shoulder of the seated person of different sizes.

  A side airbag apparatus according to a second aspect of the present invention is a side airbag apparatus including an airbag bag body that is deployed between a shoulder portion of a seat occupant and a side surface of a passenger compartment. The bag storage case is supported on the seat back of the seat so that its position can be adjusted in the left-right direction.

  In the side airbag device according to the second invention, the physique is large or small when the vehicle receives a side collision by adjusting the position of the storage case in the left-right direction corresponding to the width position of the shoulder portion of the seated person. The airbag bag body is deployed at an appropriate position corresponding to the shoulder of the seated person regardless of the width position of the shoulder of the different seated person.

  A side airbag device according to a third aspect of the present invention is a side airbag device including an airbag bag body that is deployed between a shoulder portion of a seat occupant and a side surface of a passenger compartment. The bag storage case is supported on the seat back of the seat so that its position can be adjusted in the vertical and horizontal directions.

  In the side airbag device according to the third aspect of the invention, the vehicle is subjected to a side collision by adjusting the position of the storage case in the vertical direction and the horizontal direction corresponding to the height position and width position of the shoulder portion of the seated person. In this case, the airbag body is deployed at an appropriate position corresponding to the shoulder portion of the seated person regardless of the height position and the width position of the shoulder portion of the seated person having different physiques.

  In the side airbag device according to the first to third inventions, when the portion supporting the seated person's shoulder from the seat back is divided as the shoulder rest, the storage case is supported on the seat back together with the shoulder rest so that the position of the storage case can be adjusted. can do.

  In the side airbag devices according to the first to third aspects of the invention, the storage case can be configured to be adjusted in conjunction with a headrest that is mounted on the seat back so that the vertical position can be adjusted. In this case, by adjusting the position of the headrest up and down according to the height position of the head of the seated person having a different physique, the storage case is linked to the height position or width position of the seated person's shoulder, Or it adjusts to the suitable position corresponding to a height position and a width position.

  According to the side airbag device according to the first invention, when the vehicle receives a side collision by adjusting the position of the storage case in the vertical direction corresponding to the height position of the shoulder of the seated person, The airbag bag body can be deployed at an appropriate position corresponding to the shoulder portion of the seated person regardless of the height position of the shoulder portion of the seated person having different physiques.

  According to the side airbag device according to the second aspect of the present invention, when the vehicle is subjected to a side collision by adjusting the position of the storage case in the left-right direction corresponding to the width position of the seated person's shoulder, The airbag body can be deployed at an appropriate position corresponding to the shoulder of the seated person regardless of the width of the shoulder of the seated person.

  According to the side airbag device according to the third aspect of the present invention, the vehicle is subjected to a side collision by adjusting the position of the storage case in the vertical direction and the horizontal direction corresponding to the height position and the width position of the shoulder portion of the seated person. When received, the airbag body can be deployed at an appropriate position corresponding to the shoulder of the seated person regardless of the height and width positions of the shoulder of the seated person having different physiques.

  According to the side airbag device according to the first to third inventions, since the airbag bag body can be deployed at an appropriate position corresponding to the shoulder portion of the seated person, the shoulder portion of the seated person can be accurately positioned. In addition, the airbag bag body can be downsized.

  Hereinafter, the best embodiment of the side airbag device concerning the present invention is described with reference to drawings. In the drawings to be referred to, FIG. 1 is a front view showing a side airbag device applied to a front seat for a vehicle as an embodiment together with a front seat and a seat belt device, and FIG. 2 is a side airbag shown in FIG. FIG. 3 is a perspective view showing the apparatus together with the front seat and the seat belt device, and FIG. 3 is a left side of the interlocking support mechanism configured in the front seat shown in FIGS. 1 and 2 as a main part of the side airbag device of the embodiment. It is a half front view.

  The side airbag device of one embodiment protects a seat occupant from an impact when the vehicle receives a side collision. For example, the side airbag device is attached to the front door 2 of the vehicle together with the seat belt device 1 shown in FIG. It is applied to the front sheet 3 arranged adjacently.

  The seat belt device 1 is a so-called three-point system, and as shown in FIGS. 1 and 2, a tongue 1B slidably mounted on the seat belt 1A and a lap belt portion of the seat belt 1A extending from the tongue 1B portion An anchor 1C for fixing the end of 1A1 to the vicinity of the rear portion of the right side of the front seat 3 facing the seat cushion 3A; a shoulder anchor 1D for extending a shoulder belt portion 1A2 of the seat belt 1A extending from the tongue 1B portion; A buckle 1E is provided that detachably fixes the tongue 1A near the rear of the right side portion on the left side of the seat cushion 3A.

  The front seat 3 has a structure in which a seat back 3B is connected to the rear portion of the seat cushion 3A so as to freely adjust the angle back and forth, and a headrest 3C is mounted on the upper portion of the seat back 3B so that the position can be adjusted vertically.

  Here, the seat back 3B is formed in a shape that supports the back to waist portions excluding the shoulder portions of the seated person P shown in FIG. 1, and the portions that support the left and right shoulder portions of the seated person P are seats. The left shoulder rest 3D and the right shoulder rest 3E divided from the back 3B are disposed on the left and right of the lower portion of the headrest 3C.

  And the left and right of the lower part of the headrest 3C and the left shoulder rest 3D and the right shoulder rest 3E are connected via bellows boots 3F and 3G, respectively. Further, the lower part of the center part in the width direction of the headrest 3C and the upper part of the center part in the width direction of the seat back 3B are connected via a bellows boot 3H.

  Here, the shoulder anchor 1D of the seat belt device 1 described above is fixed to the upper part of the left shoulder rest 3D. The shoulder anchor 1D is welded to a headrest frame (not shown) in the left shoulder rest 3D, and is configured to extend the shoulder belt portion 1A2 of the seat belt 1A from a built-in retractor (not shown).

  FIG. 3 shows the structure of the left half (half on the right side) corresponding to the left shoulder rest 3 </ b> D in the interlocking support mechanism 4 configured in the front seat 3. The structure of the right half (half on the left side of the interlocking support mechanism 4) is bilaterally symmetrical with the structure of the left half, and illustration and detailed description thereof are omitted.

  The interlocking support mechanism 4 supports the left shoulder rest 3D and the right shoulder rest 3E on the seat back 3B in such a manner that the position of the left shoulder rest 3D and the right shoulder rest 3E can be adjusted in the vertical and horizontal directions in conjunction with the adjustment of the vertical position of the headrest 3C shown in FIG. The left half on the right side of the interlocking support mechanism 4 is configured to support the left shoulder rest 3D on the seat back 3B so that the position of the left shoulder rest 3D can be adjusted in the left-right direction in conjunction with the vertical position adjustment of the headrest 3C.

  The left half of the interlocking support mechanism 4 is provided with a pair of central guide stays 4A and a central guide pipe 4B as a structure for guiding the headrest 3C up and down with respect to the seat back 3B.

  The lower end of the center guide stay 4A is welded to the upper frame 3B1 in the seat back 3B, and is disposed near the center in the width direction of the seat back 3B. On the other hand, the center guide pipe 4B is welded to a headrest frame (not shown) in the headrest 3C, and is disposed near the center in the width direction of the headrest 3C. A substantially upper half of the central guide stay 4A is slidably fitted to the central guide pipe 4B, and a locking mechanism (not shown) for adjusting the headrest 3C up and down is formed between the two. ing.

  Further, the left half of the interlocking support mechanism 4 has a structure in which the left shoulder rest 3D is guided to the headrest 3C so as to be movable in the left-right direction, and a pair of the upper guide bar 4C and the upper guide pipe 4D, A set of lower guide bar 4E and lower guide pipe 4F is provided.

  The upper guide bar 4C is welded to the shoulder rest frame 3D1 in the left shoulder rest 3D at one end on the right side of the upper guide bar 4C, and is disposed substantially horizontally above the left shoulder rest 3D. On the other hand, the upper guide pipe 4D is welded to a headrest frame (not shown) and the center guide pipe 4B in the headrest 3C, and is disposed near the center in the vertical direction of the headrest 3C. And the other end portion on the left side is slidably fitted to the upper guide pipe 4D from the middle portion of the upper guide bar 4C.

  Similarly, the lower guide bar 4E is welded to the shoulder rest frame 3D1 in the left shoulder rest 3D at the right end portion thereof, and is disposed substantially horizontally near the lower portion of the left shoulder rest 3D. On the other hand, the lower guide pipe 4F is welded to a headrest frame (not shown) and the center guide pipe 4B in the headrest 3C, and is disposed near the lower portion of the headrest 3C. And the other end part of the left side is slidably fitted to this lower guide pipe 4F from the intermediate part of the lower guide bar 4E.

  Further, the left half of the interlocking support mechanism 4 has a structure in which the left shoulder rest 3D is moved in the left-right direction in conjunction with the vertical movement of the headrest 3C, and a vertical rack bar 4G extending in the vertical direction and a horizontal rack bar extending in the left-right direction. 4H, and two series of small-diameter pinion gears 4J and large-diameter pinion gears 4K that interlock the two.

  The lower end of the vertical rack bar 4G is welded to the upper frame 3B1 in the seat back 3B, and is arranged on the right side in parallel to the central guide stay 4A. The vertical rack bar 4G passes through a guide bush 4L installed on the lower surface of the headrest 3C and extends into the headrest 3C, and a rack 4G1 is formed on the right side surface of the upper rack bar 4G. .

  The lateral rack bar 4H is welded to the shoulder rest frame 3D1 in the left shoulder rest 3D on the right end side, and is disposed horizontally between the upper guide bar 4C and the lower guide bar 4E. Yes. The horizontal rack bar 4H extends through the guide bush 4M disposed on the left side surface on the right side of the lower portion of the headrest 3C and extends into the headrest 3C. A rack 4H1 is formed on the upper surface of the.

  The two small-diameter pinion gears 4J and the large-diameter pinion gear 4K are rotatably supported by a headrest frame (not shown) in the headrest 3C so as to rotate integrally. The small-diameter pinion gear 4J is engaged with the rack 4G1 of the vertical rack bar 4G and the large-diameter pinion gear 4K is aligned with the horizontal rack bar 4H so that the left shoulder rest 3D moves toward the left side on the right side according to the upward movement of the headrest 3C. Of the rack 4H1. The gear ratio between the small-diameter pinion gear 4J and the large-diameter pinion gear 4K is determined by physique data obtained from the relationship between the head position of the seated person P and the shoulder width.

  Here, as shown in FIG. 1, the side airbag device 5 of one embodiment includes a waist airbag bag body 5 </ b> A that protects the waist of the seated person P from impact when the vehicle receives a side collision, A shoulder airbag bag body 5B that protects the shoulder portion of the person P from impact.

  The waist airbag bag body 5A is housed in a storage case (not shown) disposed in the left side portion on the right side of the seat back 3B constituting the front seat 3, and the vehicle receives a side collision. In this case, as shown by a two-dot chain line in FIGS. 1 and 2, it is developed in a space between the inner surface of the front door 2 and the waist of the seated person P.

  Here, the shoulder anchor 1D constituting the seat belt device 1 is integrally formed with a storage case 5C for the shoulder airbag bag body 5B, and the storage case 5C is located on the right side of the left shoulder rest 3D. Is arranged on the side. When the vehicle receives a side collision, the shoulder airbag bag 5B stored in the storage case 5C has an inner surface of the front door 2 as indicated by a two-dot chain line in FIGS. It develops in a space between the seated person's P shoulder.

  In the side airbag device 5 according to one embodiment configured as described above, for example, a large-sized occupant P moves the headrest 3C of the front seat 3 upward from the seatback 3B in accordance with the height position of the head. When the left shoulder rest 3D and the right shoulder rest 3E move together with the headrest 3C above the seat back 3B, the interlock support mechanism 4 moves the head shoulder 3C from the headrest 3C outward in the width direction of the seat back 3B. Move and adjust position.

  In this case, in the left half of the interlocking support mechanism 4 shown in FIG. 3, when the headrest 3C is pulled upward in the arrow direction, the central guide pipe 4B on the headrest 3C side is moved along the central guide stay 4A on the seatback 3B side. The headrest 3C, the left shoulder rest 3D, and the right shoulder rest 3E (see FIG. 2) are adjusted upward by moving upward.

  At that time, the small pinion gear 4J on the headrest 3C side meshing with the rack 4G1 of the vertical rack bar 4G on the seat back 3B side moves upward while rotating counterclockwise toward the left, and the horizontal rack bar on the left shoulder rest 3D side. The large-diameter pinion gear 4K meshing with the 4H rack 4H1 rotates counterclockwise counterclockwise toward the left together with the small-diameter pinion gear 4J, thereby pushing the horizontal rack bar 4H toward the left shoulder rest 3D.

  Then, the upper guide bar 4C and the lower guide bar 4E on the left shoulder rest 3D side move along the upper guide pipe 4D and the lower guide pipe 4F on the headrest 3C side, so that the left shoulder rest 3D is removed from the headrest 3C in FIG. The position is adjusted by moving to the left in the direction of the arrow.

  As a result, the storage case 5C disposed on the right side surface toward the left shoulder rest 3D moves upward and to the left side toward the right side with respect to the seat back 3B of the front seat 3 to move the left shoulder of the seated person P. The position is adjusted to the left of At the same time, the shoulder anchor 1D fixed to the upper part of the left shoulder rest 3D is adjusted to a position just above the left shoulder of the seated person P.

  On the other hand, when the seated person P with a small physique adjusts the position by pushing down the headrest 3C of the front seat 3 downward on the seat back 3B side according to the height position of the head, the interlocking support mechanism 4 operates as described above. By moving the left shoulder rest 3D and the right shoulder rest 3E together with the headrest 3C, the left shoulder rest 3D and the right shoulder rest 3E are moved downward in the width direction of the seat back 3B and adjusted in the left-right direction. The

  As a result, the storage case 5C disposed on the right side surface toward the left shoulder rest 3D moves downward and to the right on the left side with respect to the seat back 3B of the front seat 3 to move the left shoulder of the seated person P. The position is adjusted to the left of At the same time, the shoulder anchor 1D fixed to the upper part of the left shoulder rest 3D is adjusted to a position just above the left shoulder of the seated person P.

  That is, in the side airbag device 5 of one embodiment, the headrest 3C is vertically adjusted according to the height position of the head of the seated person P having a different physique, and the shoulder air is linked to this. The storage case 5C of the bag bag body 5B is adjusted to an appropriate position corresponding to the height position and the width position of the shoulder portion of the seated person P.

  Therefore, according to the side airbag device 5 of the embodiment, when the vehicle undergoes a side collision, the height of the seat portion of the seat occupant P and the width position of the seat occupant P different in size are different. The shoulder airbag bag body 5B can be deployed at an appropriate position corresponding to the shoulder portion, and the shoulder portion having high impact resistance of the seated person P can be restrained accurately.

  The shoulder airbag bag 5B is deployed at an appropriate position corresponding to the shoulder of the seated person P regardless of the height and width of the shoulder of the seated person P having different sizes. Therefore, the shoulder airbag bag 5B can be miniaturized to the minimum necessary.

  In the seatbelt device 1, the shoulder anchor 1D is adjusted just above the left shoulder of the seated person P regardless of the height position and the width position of the shoulder part of the seated person P having different physiques. However, it is easy to pull out the shoulder belt portion 1A2 from the shoulder anchor 1D. Further, the shoulder belt portion 1A that is pulled out from the shoulder anchor 1D and attached to the seated person P fits the seated person P's chest portion appropriately without loosening.

  The side airbag device according to the present invention is not limited to the above-described embodiment. For example, the two small-diameter pinion gears 4J and the large-diameter pinion gear 4K of the interlocking support mechanism 4 shown in FIG. 3 may be configured to be rotationally driven by a drive motor whose rotation is controlled by a control unit (not shown).

  In this case, when the control unit controls the rotation of the drive motor to rotate the two small-diameter pinion gears 4J and the large-diameter pinion gear 4K counterclockwise counterclockwise, the headrest 3C moves upward with respect to the seat back 3B. At the same time, the left shoulder rest 3D and the right shoulder rest 3E move outward in the width direction with respect to the seat back 3B.

  On the contrary, when the two small-diameter pinion gears 4J and the large-diameter pinion gears 4K are rotated clockwise in the clockwise direction, the headrest 3C moves downward with respect to the seat back 3B, and at the same time, the left shoulder rest 3D and the right shoulder rest 3E. Moves inward in the width direction with respect to the seat back 3B.

  Here, the interlocking support mechanism 4 shown in FIG. 3 may have a structure with only the left half on the right side. In this case, the right shoulder rest 3E shown in FIG. 2 may be configured integrally with the headrest 3C or may be configured integrally with the seat back 3B.

  The airbag device 5 shown in FIGS. 1 and 2 is configured for the left front seat 3. However, the airbag device 5 may be configured symmetrically to the illustrated example for the right front seat. However, it can also be configured for the rear seat.

  Furthermore, the side airbag device according to the present invention is not limited to an automobile seat, and can be applied to seats of other vehicles, ships, airplanes, and the like.

It is a front view showing a side airbag device applied to a front seat for vehicles as one embodiment of the present invention with a front seat and a seat belt device. It is a perspective view which shows the side airbag apparatus shown in FIG. 1 with a front part seat and a seatbelt apparatus. It is a front view of the left half of the interlocking support mechanism comprised in the front part seat shown in Drawing 1 and Drawing 2 as an important section of a side airbag device of one embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Seat belt apparatus, 1A ... Seat belt, 1A1 ... Lap belt part, 1A2 ... Shoulder belt part, 1B ... Tongue, 1C ... Anchor, 1D ... Shoulder anchor, 1E ... Buckle, 2 ... Front door, 3 ... Front part Seat, 3A ... Seat cushion, 3B ... Seat back, 3C ... Headrest, 3D ... Left shoulder rest, 3E ... Right shoulder rest, 3F, 3G, 3H ... Bellows boot, 4 ... Interlocking support mechanism, 4A ... Center guide stay, 4B ... Center guide pipe, 4C ... Upper guide bar, 4D ... Upper guide pipe, 4E ... Lower guide bar, 4F ... Lower guide pipe, 4G ... Vertical rack bar, 4H ... Horizontal rack bar, 4J ... Small diameter pinion gear, 4K ... Large Diameter pinion gear, 4L, 4M ... Guide bush, 5 ... Side airbag device, 5A ... Lumbar airbag body 5B ... shoulder air bag part bag, 5C ... storage case.

Claims (5)

A side airbag device including an airbag bag body that is deployed between a shoulder portion of a seat occupant and a side passenger compartment surface,
The side airbag device according to claim 1, wherein the storage case of the airbag bag body is supported on the seat back of the seat so that the position thereof can be adjusted in the vertical direction. A side airbag device including an airbag bag body that is deployed between a shoulder portion of a seat occupant and a side passenger compartment surface,
The side airbag device according to claim 1, wherein the storage case of the airbag bag body is supported on the seat back of the seat so that the position thereof can be adjusted in the left-right direction. A side airbag device including an airbag bag body that is deployed between a shoulder portion of a seat occupant and a side passenger compartment surface,
The side airbag device according to claim 1, wherein the storage case of the airbag bag body is supported on the seat back of the seat so that the position thereof can be adjusted in the vertical and horizontal directions.   The portion supporting the seated person's shoulder from the seat back is divided as a shoulder rest, and the storage case is supported on the seat back together with the shoulder rest so that the position of the storage case can be adjusted. The side airbag device according to any one of the above.   The side airbag device according to any one of claims 1 to 4, wherein the position of the storage case is adjusted in conjunction with a headrest mounted on the seat back so that the vertical position of the storage case is freely adjustable.

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