JP7215385B2 - passenger protection device - Google Patents

passenger protection device Download PDF

Info

Publication number
JP7215385B2
JP7215385B2 JP2019174682A JP2019174682A JP7215385B2 JP 7215385 B2 JP7215385 B2 JP 7215385B2 JP 2019174682 A JP2019174682 A JP 2019174682A JP 2019174682 A JP2019174682 A JP 2019174682A JP 7215385 B2 JP7215385 B2 JP 7215385B2
Authority
JP
Japan
Prior art keywords
expansion
inflatable
occupant
airbag
inflation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2019174682A
Other languages
Japanese (ja)
Other versions
JP2020164143A (en
Inventor
志幸 田中
肇 切手
健一 袋野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to US16/655,761 priority Critical patent/US20200122678A1/en
Publication of JP2020164143A publication Critical patent/JP2020164143A/en
Application granted granted Critical
Publication of JP7215385B2 publication Critical patent/JP7215385B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Air Bags (AREA)

Description

本発明は、膨張用ガスの流入時、着座した乗員の前方側の収納部位から後方へ突出し、前方移動する乗員を受止可能に膨張するループ状のエアバッグを備えた乗員保護装置に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occupant protection device provided with a loop-shaped airbag that protrudes rearward from a storage portion on the front side of a seated occupant and inflates so as to receive the occupant moving forward when inflation gas is introduced.

従来、乗員保護装置として、着座した乗員を保護するエアバッグが、迅速に膨張を完了でき、また、乗員受止時の反力の増大を抑制するように、ループ状に膨張を完了させるものが知られている（例えば、特許文献１，２参照）。これらのエアバッグでは、膨張完了時に、前後方向の中間部位に、膨張用ガスを流入させない中空部を設けたループ状としており、膨張部位の容積が少ないことから、迅速に膨張を完了させることができ、かつ、乗員を受け止める際に、前後方向の中間部位に配設された中空部を潰すようにして、反力の上昇を抑制して、乗員を受け止めて保護することができた。 Conventionally, as an occupant protection device, an airbag that protects a seated occupant can quickly complete inflation, and also completes inflation in a loop shape so as to suppress an increase in reaction force when the occupant is received. known (see, for example, Patent Literatures 1 and 2). These airbags have a loop shape in which a hollow portion is provided in the intermediate portion in the front-rear direction to prevent the inflow of inflation gas when inflation is completed. Moreover, when receiving the occupant, the hollow portion disposed in the intermediate portion in the front-rear direction is crushed to suppress the rise of the reaction force, and the occupant can be received and protected.

特開平６－３４４８４４号公報JP-A-6-344844 特開２０１７－２２２３３１号公報JP 2017-222331 A

しかし、いずれの乗員保護装置でも、膨張完了時のエアバッグが、前後方向の中間部位に、中空部を設けて、前方側に潰れやすく構成されていることから、逆に、乗員受止時に、安定した反力を確保できない虞れが生ずる。 However, in any of the occupant protection devices, the airbag when inflation is completed has a hollow portion in the middle portion in the front-rear direction, and is configured to be easily crushed forward. There is a possibility that a stable reaction force cannot be secured.

本発明は、上述の課題を解決するものであり、エアバッグが、迅速に膨張を完了させることができ、かつ、乗員受止時に安定した反力を確保できる乗員保護装置を提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide an occupant protection system in which an airbag can quickly complete inflation and secure a stable reaction force when receiving an occupant. and

本発明に係る乗員保護装置は、着座した乗員の前方側の車体側部位に配設された収納部位に、収納されて、膨張用ガスの流入時、前記収納部位から後方へ突出し、前方移動する乗員を受止可能に膨張するとともに、膨張部位の中央付近に、膨張用ガスを流入させない中空部を配設させたループ状のエアバッグを備えた乗員保護装置であって、
前記エアバッグが、膨張完了時の形状として、
前記収納部位から、前記車体側部位に沿うように略柱状に延びて、前記車体側部位に支持される第１膨張部と、該第１膨張部の上下方向の端部から、乗員の保護対象部位側の後方側に、略柱状に延びる第２膨張部と、該第２膨張部の後端から略柱状に延びて、前記第１膨張部の上下方向の他方の端部と交差する第３膨張部と、を、前記中空部を囲むように配置させた略三角環状とし、
前記エアバッグが、膨張完了時、
前記第２膨張部の後端付近を、最後端に配置させて、前方移動する乗員の保護対象部位の受止部位とするとともに、
前記第２膨張部の後端付近での乗員の保護対象部位の受止時に、
前記第２膨張部を、膨張完了形状の略柱状の軸方向に沿って後端側を前端側に接近させるような圧縮変形可能に、
前記第２膨張部の後端付近を、前記第３膨張部に支持させ、かつ、前記車体側部位からの反力を確保可能に、前記第２膨張部の前端付近を、前記第１膨張部と連結させていることを特徴とする。 The occupant protection device according to the present invention is housed in a housing portion disposed in a vehicle body side portion in front of a seated occupant, and projects rearward from the housing portion and moves forward when inflation gas flows in. An occupant protection device comprising a loop-shaped airbag that is inflated to receive an occupant and has a hollow portion that does not allow inflation gas to flow in the vicinity of the center of the inflated portion, comprising:
The shape of the airbag when inflation is completed is as follows:
A first inflatable portion extending in a substantially columnar shape along the vehicle body side portion from the storage portion and supported by the vehicle body side portion; A second inflatable portion extending in a substantially columnar shape rearward of the part side, and a third inflatable portion extending in a substantially columnar shape from the rear end of the second inflatable portion and intersecting the other end in the vertical direction of the first inflatable portion. and an inflatable portion having a substantially triangular ring shape surrounding the hollow portion,
When the airbag completes inflation,
The vicinity of the rear end of the second inflatable portion is arranged at the rearmost end and serves as a receiving portion for a portion to be protected of the occupant moving forward,
When receiving the part to be protected of the occupant in the vicinity of the rear end of the second expansion part,
The second expansion portion is compressively deformable such that the rear end side approaches the front end side along the axial direction of the substantially columnar shape in the completed expansion shape,
The vicinity of the rear end of the second expansion portion is supported by the third expansion portion, and the vicinity of the front end of the second expansion portion is supported by the first expansion portion so as to ensure a reaction force from the vehicle body side portion. It is characterized in that it is connected with

本発明に係る乗員保護装置では、エアバッグが膨張を完了させれば、第２膨張部の後端付近を、乗員の保護対象部位の受止部位としており、乗員が前方移動してくれば、乗員の保護対象部位が、受止部位としての第２膨張部の後端付近に受け止められる。その際、第２膨張部が、膨張完了形状の略柱状の軸方向に沿って後端側を前端側に接近させるような圧縮変形可能に、第２膨張部の後端付近を、第３膨張部に支持させ、かつ、車体側部位からの反力を確保可能に、第２膨張部の前端付近を、第１膨張部と連結させている。そのため、第２膨張部は、座屈変形するような状態、換言すれば、膨張完了形状の略柱状の軸方向に沿って、後端側を前端側に接近させるような圧縮変形状態（第２膨張部が前後方向の長さ寸法を圧縮されるような状態）として、乗員の保護対象部位を受け止める挙動となる。すなわち、膨張を完了させたエアバッグは、曲げ変形でなく、高い反力を確保できる第２膨張部の座屈変形のような圧縮変形を伴なって、変形することから、安定して、所定以上の反力を確保して、乗員の保護対象部位を受け止めることができる。勿論、エアバッグは、中空部を配設させていることから、外形形状の全域を膨張部位とする場合に比べて、膨張用ガスを流入させる容量は少なく、迅速に膨張を完了させることができる。 In the occupant protection device according to the present invention, when the airbag completes inflation, the vicinity of the rear end of the second inflatable portion serves as a receiving portion of the portion to be protected of the occupant, and when the occupant moves forward, A portion of the occupant to be protected is received near the rear end of the second inflatable portion as a receiving portion. At this time, the second expansion portion is compressively deformable such that the rear end side approaches the front end side along the axial direction of the substantially columnar shape in the expansion completion shape, and the vicinity of the rear end of the second expansion portion is moved to the third expansion portion. The vicinity of the front end of the second inflatable portion is connected to the first inflatable portion so that the second inflatable portion is supported by the portion and the reaction force from the vehicle body side portion can be secured. Therefore, the second expansion portion is in a state of buckling deformation, in other words, a state of compression deformation (second expansion portion) in which the rear end side approaches the front end side along the axial direction of the substantially columnar shape of the expanded shape. In such a state that the inflatable portion is compressed in the lengthwise dimension in the front-rear direction, it becomes a behavior that receives the part to be protected of the occupant. That is, the fully inflated airbag deforms not by bending deformation but by compressive deformation such as buckling deformation of the second inflatable portion that can ensure a high reaction force. It is possible to secure the above reaction force and receive the part to be protected of the occupant. Of course, since the airbag is provided with a hollow portion, compared with the case where the entire outer shape is used as the inflation region, the volume into which the inflation gas flows is smaller, and the inflation can be completed quickly. .

したがって、本発明に係る乗員保護装置では、エアバッグが、迅速に膨張を完了させることができ、かつ、乗員受止時に安定した反力を確保することができる。 Therefore, in the occupant protection system according to the present invention, the airbag can quickly complete inflation, and can secure a stable reaction force when receiving the occupant.

そして、本発明に係る乗員保護装置では、前記エアバッグの前記第２膨張部が、膨張完了時の前端から後端に延びる方向を、前記乗員保護装置の作動時に前方移動する乗員の保護対象部位の移動方向に対して対向する方向に沿う方向とするように、配設されていることが望ましい。 In the occupant protection system according to the present invention, the second inflation portion of the airbag extends in a direction extending from a front end to a rear end when the inflation is completed. It is desirable that the direction is along the direction opposite to the direction of movement of the .

このような構成では、エアバッグの第２膨張部が、乗員保護装置の作動時に前方移動する乗員の保護対象部位の移動方向に対して対向する方向に沿う方向に沿って、膨張完了時に、前端から後端に延びており、乗員の保護対象部位を受け止めて座屈変形するような状態となる際、一層、的確に、安定した反力を確保できる。 With such a configuration, the second inflatable portion of the airbag moves forward when the occupant protection device is actuated. , so that when the occupant is subjected to buckling deformation by receiving the part to be protected of the occupant, a more accurate and stable reaction force can be ensured.

本発明に係る乗員保護装置では、前記エアバッグの第２膨張部の後端付近が受け止める乗員の保護対象部位としては、乗員の膝部や頭部が例示できる。例えば、乗員の膝部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグの収納部位を、着座した乗員の下肢の前方側における前記車体側部位の後面側に、配設し、前記エアバッグは、膨張時、前記収納部位から後方へ突出して、前方移動する乗員を受止可能に膨張する構成として、膨張完了時の前記第１膨張部を、前記車体側部位の後面側に沿い、かつ、前記車体側部位の後面側に支持されるように配設し、そして、膨張完了時の前記第２膨張部を、前記第１膨張部の上端付近から後方へ延び、後端付近を、前方移動する乗員の膝部を受け止める受止部位として、配設すればよい。 In the occupant protection system according to the present invention, the occupant's knees and head can be exemplified as the occupant's protection target portion received by the vicinity of the rear end of the second inflatable portion of the airbag. For example, in an occupant protection device in which the knees of an occupant are to be protected, the storage portion for the airbag is disposed on the rear side of the vehicle body side portion in front of the lower legs of the seated occupant, When the airbag is inflated, the airbag protrudes rearward from the housing portion and is inflated so as to receive an occupant moving forward. and is supported on the rear surface side of the vehicle body side portion, and the second expansion portion when expansion is completed extends rearward from the vicinity of the upper end of the first expansion portion to the vicinity of the rear end. as a receiving portion for receiving the knees of the occupant moving forward.

また、後席乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグの収納部位を、着座した乗員の前方側における前記車体側部位としての前席の後面側に、配設し、前記エアバッグを、膨張時、前記収納部位から後方へ突出して、前方移動する乗員を受止可能に膨張する構成として、膨張完了時の前記第１膨張部を、前記車体側部位としての前記前席の後面側に沿い、かつ、前記前席の後面側に支持されるように配設し、そして、膨張完了時の前記第２膨張部を、前記第１膨張部の上端付近から後方へ延び、後端付近を、前方移動する乗員の頭部を受け止める受止部位として、配設すればよい。 Further, as a passenger protection device in which the head of a rear-seat passenger is to be protected, the storage part of the airbag is placed on the rear side of the front seat as the vehicle-body-side part in front of the seated passenger, and the airbag, when inflated, protrudes rearward from the storage portion and inflates so as to receive an occupant moving forward; along the rear surface side of the front seat and supported by the rear surface side of the front seat; , and the vicinity of the rear end thereof may be provided as a receiving portion for receiving the head of the occupant moving forward.

なお、乗員の膝部を保護対象部位とする場合の乗員保護装置や後席乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグが、膨張完了時の前記第２膨張部と前記第３膨張部との相互を連結して、前記第２膨張部と前記第３膨張部との相互の離隔方向への移動を規制する上下テザー、を配設させることが望ましい。このような構成では、上下テザーにより、エアバッグの膨張完了時の第２膨張部と第３膨張部との相互の離隔状態を安定させることできて、膨張完了時のエアバッグの略三角環状の形状を安定させて、エアバッグの乗員保護性能を安定させることに寄与できる。 As an occupant protection device in which the knees of an occupant are to be protected, and a occupant protection device in which the head of a rear seat occupant is to be protected, the airbag is in the second position at the time of completion of inflation. It is preferable to dispose an upper and lower tether that connects the inflatable portion and the third inflatable portion to restrict the movement of the second inflatable portion and the third inflatable portion in the mutually separating direction. In such a configuration, the upper and lower tethers can stabilize the separation state between the second inflation portion and the third inflation portion when the inflation of the airbag is completed, and the substantially triangular annular shape of the airbag when inflation is completed. Stabilizing the shape can contribute to stabilizing the occupant protection performance of the airbag.

さらに、助手席の乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグの収納部位を、着座した乗員の前方側における前記車体側部位としてのインストルメントパネルの上面側に配設し、前記エアバッグを、膨張時、前記インストルメントパネルと前記インストルメントパネルの上方のウインドシールドとの間を塞ぐように、前記収納部位から後方へ突出して、前方移動する乗員を受止可能に膨張する構成として、膨張完了時の前記第１膨張部を、前記車体側部位としての前記インストルメントパネルの上面に沿い、かつ、前記インストルメントパネルに支持されるように、前記収納部位から、後下方に延ばすように、配設し、膨張完了時の前記第２膨張部を、前記第１膨張部の前端付近から斜め上後方へ延び、後端付近を、前方移動する乗員の頭部を受け止める受止部位として、配設すればよい。 Furthermore, as an occupant protection device when the head of an occupant in the front passenger seat is to be protected, the storage portion of the airbag is placed on the upper surface side of the instrument panel as the vehicle body portion in front of the seated occupant. When inflated, the airbag protrudes rearward from the storage portion so as to block the space between the instrument panel and the windshield above the instrument panel, and receives the occupant moving forward. As a configuration for stopably inflating, the first inflatable portion at the completion of inflation is arranged along the upper surface of the instrument panel as the vehicle body side portion and supported by the instrument panel. The second inflatable portion at the time of completion of inflation extends obliquely upward and rearward from the vicinity of the front end of the first inflatable portion, and the vicinity of the rear end of the occupant's head moves forward. It may be disposed as a receiving portion for receiving the portion.

そして、上記の助手席の乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグが、車両搭載状態での膨張完了時、
前記収納部位から突出した状態での前記第２膨張部における前記第１膨張部と交差する前端部位から前記第３膨張部と交差する後端部位までの前後方向の長さ寸法を、
前記第１膨張部における前記第２膨張部と交差する部位から前記第３膨張部と交差する部位までの長さ寸法と、前記第３膨張部における前記第２膨張部と交差する上端部位から前記第１膨張部と交差する下端部位までの長さ寸法と、の合計より短く、かつ、
前記第１膨張部における前記第２膨張部と交差する部位から前記第３膨張部と交差する部位までの長さ寸法より、長くすることが望ましい。 When the head of the occupant on the front passenger seat is the part to be protected, the occupant protection device is such that when the airbag is fully inflated in a vehicle-mounted state,
The length dimension in the front-rear direction from the front end portion of the second expansion portion intersecting the first expansion portion to the rear end portion intersecting the third expansion portion in the state of protruding from the housing portion is
a length dimension from a portion of the first expansion portion that intersects with the second expansion portion to a portion that intersects with the third expansion portion; shorter than the sum of the length dimension up to the lower end portion that intersects with the first expansion portion, and
It is desirable that the length dimension from the portion of the first expansion portion that intersects with the second expansion portion to the portion that intersects with the third expansion portion is longer than the length dimension.

このような構成では、エアバッグが膨張すると、第１膨張部、第２膨張部、及び、第３膨張部が、それぞれ、略柱状として、略三角環状に膨張を完了させることとなり、その際、第１膨張部が、前後方向に延びる第２膨張部より短い長さ寸法として、インストルメントパネルの上面側に沿って後下方へ延びて膨張することとなり、第２膨張部の長さ寸法が、第１膨張部より長い長さ寸法としているものの、第１膨張部と第３膨張部との合計の長さ寸法より、小さいことから、第３膨張部は、安定して、上端部位より下端部位を前方に配置させた形状（すなわち、上端部位を下端部位より後方に配置させた形状）を確保できることとなり、その結果、安定して、膨張完了時の第２膨張部の後端付近が、エアバッグの最後端となって、前方移動する助手席乗員の頭部を、好適に受け止めることができる。 With such a configuration, when the airbag is inflated, the first, second and third inflation sections are substantially columnar and complete inflation in a substantially triangular annular shape. The first expansion portion has a length dimension shorter than that of the second expansion portion extending in the front-rear direction, and expands while extending rearward and downward along the upper surface side of the instrument panel, and the length dimension of the second expansion portion is Although the length dimension is longer than that of the first expansion part, it is smaller than the total length dimension of the first expansion part and the third expansion part. is placed forward (that is, a shape in which the upper end portion is placed behind the lower end portion) can be ensured. As the rearmost end of the bag, the head of the occupant in the passenger's seat moving forward can be received favorably.

そしてまた、助手席の乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグが、膨張完了時の前記第３膨張部と前記収納部位側とを連結して、前記第３膨張部の前記収納部位から離隔する後方移動を規制可能な前後テザー、を配設させていることが望ましい。 Further, as an occupant protection device in which the head of an occupant in a front passenger seat is to be protected, the airbag connects the third inflatable portion and the storage portion when the inflation is completed, thereby It is preferable that a front and rear tether capable of restricting rearward movement of the third inflatable portion away from the housing portion is provided.

このような構成では、第１膨張部と第２膨張部との間で略上下方向に沿って配設される第３膨張部が、前後テザーにより、全体的あるいは部分的な後方移動を規制されることから、膨張完了時のエアバッグの略三角環状の形状が安定して、エアバッグの乗員保護性能を安定させることに寄与できる。 With such a configuration, the third inflatable portion, which is arranged substantially in the vertical direction between the first inflatable portion and the second inflatable portion, is restricted from moving backward wholly or partially by the front and rear tethers. Therefore, the substantially triangular annular shape of the airbag is stabilized when the inflation is completed, which contributes to stabilizing the occupant protection performance of the airbag.

また、助手席の乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグが、膨張完了時の前記第２膨張部と前記第１膨張部との相互を連結して、前記第２膨張部と前記第１膨張部との相互の離隔方向への移動を規制する上下テザー、を配設させていることが望ましい。 Further, as an occupant protection device in which the head of an occupant in the front passenger seat is to be protected, the airbag connects the second inflation portion and the first inflation portion when inflation is completed. , and an upper and lower tether for restricting the movement of the second expansion portion and the first expansion portion in the mutually separating direction.

このような構成では、上下テザーにより、エアバッグの膨張完了時の第２膨張部と第１膨張部との相互の離隔状態を安定させることできて、膨張完了時のエアバッグの略三角環状の形状を安定させて、エアバッグの乗員保護性能を安定させることに寄与できる。 In such a configuration, the upper and lower tethers can stabilize the separation state between the second inflation portion and the first inflation portion when the inflation of the airbag is completed. Stabilizing the shape can contribute to stabilizing the occupant protection performance of the airbag.

さらに、助手席の乗員の頭部を保護対象部位とする場合の乗員保護装置としては、前記エアバッグが、膨張完了時の前記第２膨張部の上面側と前記収納部位側とを連結して、前記第２膨張部の前記ウインドシールドから離隔する下方移動を規制する上外側テザー、を配設させていることが望ましい。 Further, as an occupant protection device in which the head of an occupant in the front passenger seat is to be protected, the airbag connects the upper surface side of the second inflation portion and the storage portion side when the inflation is completed. and an upper outer tether for restricting the downward movement of the second inflatable portion away from the windshield.

このような構成では、膨張完了時のエアバッグが、上外側テザーにより、第２膨張部の上面側をウインドシールドに対して接触させる状態を維持でき、初期拘束時も含めた乗員拘束時において、第２膨張部が上面側をウインドシールドに支持され、曲げ変形の挙動を抑制して、座屈変形状態の挙動を安定させることができることから、エアバッグは、安定した反力を確保できる良好な乗員拘束性能を発揮できる。 With such a configuration, the airbag at the completion of inflation can maintain a state in which the upper surface side of the second inflatable portion is in contact with the windshield by the upper outer tether. Since the upper surface side of the second inflatable portion is supported by the windshield, the behavior of bending deformation can be suppressed and the behavior of the buckling deformation state can be stabilized. Capable of occupant restraint performance.

本発明に係る第１実施形態の乗員保護装置の作動状態を示す概略側面図である。1 is a schematic side view showing an operating state of an occupant protection system according to a first embodiment of the present invention; FIG. 第１実施形態の乗員保護装置の作動時のエアバッグの概略縦断面図である。FIG. 4 is a schematic longitudinal sectional view of the airbag when the occupant protection system of the first embodiment is activated; 第１実施形態の乗員保護装置の作動時のエアバッグの概略縦断面図である。FIG. 4 is a schematic longitudinal sectional view of the airbag when the occupant protection system of the first embodiment is activated; 第１実施形態の乗員保護装置の作動時のエアバッグの概略縦断面図であり、図２のIV－IV部位を示す。FIG. 3 is a schematic vertical cross-sectional view of the airbag when the occupant protection system of the first embodiment is in operation, showing the IV-IV portion of FIG. 2; 第１実施形態のエアバッグの単体での膨張完了時の概略斜視図である。FIG. 4 is a schematic perspective view of the single airbag of the first embodiment when inflation is completed; 第１実施形態のエアバッグの構成材料を示す平面図である。FIG. 2 is a plan view showing constituent materials of the airbag of the first embodiment; 第１実施形態のエアバッグの各種テザーの結合状態を示す平面図である。FIG. 4A is a plan view showing a connection state of various tethers of the airbag of the first embodiment; 第１実施形態の乗員保護装置の作動時におけるエアバッグの膨張状態を順に説明する図である。4A and 4B are diagrams for sequentially explaining the inflated states of the airbag when the occupant protection system of the first embodiment is activated; FIG. 第１実施形態の乗員保護装置の作動時におけるエアバッグの膨張状態を順に説明する図であり、図８の後の状態を示す。9A and 9B are diagrams for sequentially explaining the inflated states of the airbag when the occupant protection system of the first embodiment is activated, and show the state after FIG. 8 ; FIG. 第２実施形態の乗員保護装置の作動状態を示す概略側面図である。FIG. 11 is a schematic side view showing an operating state of the passenger protection device of the second embodiment; 第２実施形態の乗員保護装置の作動時のエアバッグの概略縦断面図であり、図１０のXI－XI部位を示す。FIG. 11 is a schematic vertical cross-sectional view of the airbag when the occupant protection system of the second embodiment is in operation, showing the XI-XI portion of FIG. 10; 第３実施形態の乗員保護装置の作動状態を示す概略側面図である。FIG. 11 is a schematic side view showing an operating state of the passenger protection device of the third embodiment; 第３実施形態の乗員保護装置の作動時のエアバッグの概略縦断面図であり、図１２のXIII－XIII部位を示す。FIG. 13 is a schematic vertical cross-sectional view of the airbag when the occupant protection system of the third embodiment is in operation, showing the XIII-XIII portion of FIG. 12; 第４実施形態の乗員保護装置の作動状態を示す概略側面図である。FIG. 11 is a schematic side view showing an operating state of the passenger protection device of the fourth embodiment;

以下、本発明の第１実施形態を図面に基づいて説明すると、第１実施形態の乗員保護装置１０は、図１に示すように、車両１の助手席のシート４の前方側におけるインストルメントパネル（インパネ）２の上面２ａ側に、搭載されている。なお、助手席のシート４は、背もたれ部４ａと座部４ｂとを備えるとともに、シート４には、シートベルト６におけるショルダーベルト６ａとラップベルト６ｂとを装着した乗員ＯＰが着座することとなる。 A first embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. It is mounted on the upper surface 2a side of (instrument panel) 2 . The front passenger seat 4 includes a backrest portion 4a and a seat portion 4b, and an occupant OP who wears a shoulder belt 6a and a lap belt 6b of the seat belt 6 sits on the seat 4.

乗員保護装置１０は、助手席のシート４に着座した乗員ＯＰを保護するエアバッグ２０と、エアバッグ２０に膨張用ガスＧを供給するインフレーター１６と、を備えて構成され、エアバッグ２０は、収納部位としてのケース１２に折り畳まれて収納され、インフレーター１６は、折り畳まれたエアバッグ２０に膨張用ガスを供給できるように、ケース１２に取り付けられている。 The occupant protection device 10 includes an airbag 20 that protects an occupant OP seated on a front passenger seat 4, and an inflator 16 that supplies inflation gas G to the airbag 20. The airbag 20 includes: The inflator 16 is attached to the case 12 so as to supply inflation gas to the folded airbag 20 .

インフレーター１６は、図２に示すように、膨張用ガスＧを吐出するガス吐出口１６ｂを配設させた本体部１６ａと、本体部１６ａの外周面から延びるフランジ部１６ｃと、を備えて、構成されている。 As shown in FIG. 2, the inflator 16 includes a body portion 16a having a gas discharge port 16b for discharging the inflation gas G, and a flange portion 16c extending from the outer peripheral surface of the body portion 16a. It is

ケース１２は、長方形板状の底壁部１３と、底壁部１３の外周縁から延びる四角筒形状の周壁部１４と、を備えて構成される板金製として、インパネ２の上面２ａ側の図示しない車体側部材に取付固定されて、配設されている。底壁部１３には、四角環状のリテーナ１７を利用して、インフレーター１６とエアバッグ２０とが取付固定される。 The case 12 is made of sheet metal and includes a rectangular plate-shaped bottom wall portion 13 and a rectangular cylindrical peripheral wall portion 14 extending from the outer peripheral edge of the bottom wall portion 13. It is installed and fixed to a vehicle body side member that does not. An inflator 16 and an airbag 20 are attached and fixed to the bottom wall portion 13 by using a square annular retainer 17 .

リテーナ１７は、エアバッグ２０の流入用開口２２の内周面側に配設されて、リテーナ１７から延びる複数（第１実施形態では４本）のボルト１８を、流入用開口２２の周縁の取付孔２３（図６，７参照）に挿通させ、さらに、ケース１２の底壁部１３とインフレーター１６のフランジ部１６ｃとに挿通させて、各ボルト１８にナット１９を締結することにより、ケース１２の底壁部１３に対し、エアバッグ２０の流入用開口２２の周縁とインフレーター１６のフランジ部１６ｃとを取付固定している。 The retainer 17 is arranged on the inner peripheral surface side of the inflow opening 22 of the airbag 20 , and a plurality of (four in the first embodiment) bolts 18 extending from the retainer 17 are attached to the periphery of the inflow opening 22 . The bolts 18 are inserted through the holes 23 (see FIGS. 6 and 7), the bottom wall portion 13 of the case 12 and the flange portion 16c of the inflator 16, and the nuts 19 are fastened to the bolts 18, thereby tightening the case 12. The peripheral edge of the inflow opening 22 of the airbag 20 and the flange portion 16c of the inflator 16 are attached and fixed to the bottom wall portion 13 .

なお、インフレーター１６の作動については、図示しない制御装置が、車両１の衝突を検知するフロントバンパ等に配設された図示しない衝突検知センサからの信号を入力して、衝突したと判定すると、インフレーター１６を作動させる。 As for the operation of the inflator 16, when a control device (not shown) receives a signal from a collision detection sensor (not shown) installed in a front bumper or the like for detecting a collision of the vehicle 1 and determines that a collision has occurred, the inflator is operated. 16 is activated.

エアバッグ２０は、収納部位としてのケース１２内に折り畳まれて収納され、膨張用ガスＧの流入時、インパネ２とインパネ２の上方のウインドシールド３との間を塞ぐように、インパネ２の上面２ａ側に配設されたケース１２内から、図示しないインパネ２の扉部を押し開きつつ、後方へ突出し、前方移動する乗員ＯＰを受止可能に膨張する。すなわち、第１実施形態では、エアバッグ２０は、インパネ２の上面２ａ側に配設された収納部位としてのケース１２から、展開膨張する構成としている。 The airbag 20 is folded and stored in a case 12 as a storage part, and is arranged on the upper surface of the instrument panel 2 so as to block the space between the instrument panel 2 and the windshield 3 above the instrument panel 2 when the inflation gas G flows in. While pushing open the door of the instrument panel 2 (not shown), the case 12 protrudes rearward from the case 12 disposed on the side 2a and inflates so as to receive the occupant OP moving forward. That is, in the first embodiment, the airbag 20 is configured to deploy and inflate from the case 12 as a storage portion disposed on the upper surface 2a side of the instrument panel 2 .

このエアバッグ２０は、図１～３に示すように、膨張完了時、収納部位としてのケース１２から、車体側部位としてのインパネ２の上面２ａに沿うように略柱状に延びて、インパネ２に支持される第１膨張部としての下側膨張部２７と、第１膨張部としての下側膨張部２７の上下方向の端部（上端若しくは前端）２７ａから、乗員ＯＰの保護対象部位Ｈ側の後方側に、略柱状に延びる第２膨張部としての上側膨張部２５と、第２膨張部としての上側膨張部２５の後端２５ｂから略柱状に延びて、第１膨張部としての下側膨張部２７の上下方向の他方の端部（下端若しくは後端）２７ｂと交差する第３膨張部としての後側膨張部２９と、を、中空部３２を囲むように配置させた略三角環状としている。換言すれば、第１実施形態のエアバッグ２０は、膨張完了時、ケース１２から斜め上後方に略柱状に延びる上側膨張部２５と、上側膨張部２５の後端２５ｂから下方に略柱状に延びる後側膨張部２９と、ケース１２側の上側膨張部２５の前端２５ａ付近と交差するように、インパネ２の上面２ａ側に沿って、後側膨張部２９の下端２９ｂから前方に略柱状に延びる下側膨張部２７と、を備えた略三角環状として、前後方向の中央に、膨張用ガスＧを流入させない非膨張部位の中空部３２を配設させている。第１実施形態の場合、エアバッグ２０が膨張を完了させると、上側膨張部２５の上面２５ｃ側が、ウインドシールド３の下面３ａに当接し、下側膨張部２７の下面２７ｄ側が、インパネ２の上面２ａに支持される状態となる。 As shown in FIGS. 1 to 3, when the airbag 20 is completely inflated, the airbag 20 extends in a substantially columnar shape along the upper surface 2a of the instrument panel 2 as a vehicle body side part from the case 12 as a storage part, and extends to the instrument panel 2. From the supported lower inflatable portion 27 as the first inflatable portion and the vertical end portion (upper end or front end) 27a of the lower inflatable portion 27 as the first inflatable portion, the portion H side of the occupant OP to be protected. An upper expansion portion 25 as a second expansion portion extending rearward in a substantially columnar shape, and a lower expansion portion as a first expansion portion extending in a substantially columnar shape from a rear end 25b of the upper expansion portion 25 as a second expansion portion. A rear expansion portion 29 as a third expansion portion that intersects with the other end (lower end or rear end) 27b of the portion 27 in the vertical direction is arranged to surround the hollow portion 32 and has a substantially triangular ring shape. . In other words, when the airbag 20 of the first embodiment is fully inflated, the upper inflation portion 25 extends obliquely upward and rearward from the case 12 in a substantially columnar shape, and the rear end 25b of the upper inflation portion 25 extends downward in a substantially columnar shape. Extends forward in a substantially columnar shape along the upper surface 2a of the instrument panel 2 from the lower end 29b of the rear expansion portion 29 so as to intersect the rear expansion portion 29 and the vicinity of the front end 25a of the upper expansion portion 25 on the case 12 side. A hollow portion 32, which is a non-inflating portion into which the inflation gas G does not flow, is arranged in the center in the front-rear direction. In the case of the first embodiment, when the airbag 20 completes inflation, the upper surface 25c side of the upper inflation portion 25 contacts the lower surface 3a of the windshield 3, and the lower surface 27d side of the lower inflation portion 27 contacts the upper surface of the instrument panel 2. It will be in a state of being supported by 2a.

そして、中空部３２は、図２に示すように、上側膨張部２５の下面２５ｄと、下側膨張部２７の上面２７ｃと、後側膨張部２９の前面２９ｃと、に囲まれる略三角形状として、前端の前頂部３２ａが、上側膨張部２５の下面２５ｄと下側膨張部２７の上面２７ｃとの曲面状に交差する先細り部位とし、後上端の上頂部３２ｂが、上側膨張部２５の下面２５ｄと後側膨張部２９の前面２９ｃとの曲面状に交差する先細り部位とし、後下端の下頂部３２ｃが、下側膨張部２７の上面２７ｃと後側膨張部２９の前面との曲面状に交差する先細り部位としている。すなわち、第１実施形態の場合、エアバッグ２０が、略柱状に膨らむ膨張部２５，２７，２９を略三角環状に曲げた状態で、かつ、膨張部２５，２７，２９の相互の交差部３４，３５，３６で、エアバッグ２０の周壁２１をキンクさせた状態としており、そのため、中空部３２は、左右方向から見ると、各頂部３２ａ，３２ｂ，３２ｃを先細り状とした略三角形の空間部位としている。 2, the hollow portion 32 has a substantially triangular shape surrounded by the lower surface 25d of the upper inflatable portion 25, the upper surface 27c of the lower inflatable portion 27, and the front surface 29c of the rear inflatable portion 29. , the front top portion 32a of the front end is a tapered portion that intersects the lower surface 25d of the upper expansion portion 25 and the upper surface 27c of the lower expansion portion 27 in a curved shape, and the upper top portion 32b of the rear upper end is the lower surface 25d of the upper expansion portion 25. and the front surface 29c of the rear expansion portion 29, and the lower top portion 32c of the rear lower end intersects the upper surface 27c of the lower expansion portion 27 and the front surface of the rear expansion portion 29 in a curved shape. It is a tapered part that That is, in the case of the first embodiment, the airbag 20 is configured such that the inflatable portions 25, 27, and 29, which are inflated into a substantially columnar shape, are bent into a substantially triangular annular shape, and the intersection portions 34 of the inflatable portions 25, 27, and 29 are bent. , 35 and 36, the peripheral wall 21 of the airbag 20 is in a kinked state. Therefore, when viewed from the left and right, the hollow portion 32 is a substantially triangular space with tapered apexes 32a, 32b and 32c. and

そして、膨張完了時のエアバッグ２０の後側膨張部２９が、上側膨張部２５と交差する上端部位２９ａを、下側膨張部２７と交差する下端部位２９ｂより、後方に配置させるように、構成されている。膨張完了時のエアバッグ２０の後側膨張部２９は、後面２９ｄ側が、乗員ＯＰを受け止める受止エリア３０となり、さらに、受止エリア３０の上部側が、頭部受止エリア３０ａとなり、下部側が胸部受止エリア３０ｂとなる。特に、このエアバッグ２０の頭部受止エリア３０ａでは、上側膨張部２５の後端２５ｂ付近が、受止時の反力を高くして、乗員ＯＰの保護対象部位としての頭部Ｈを受け止める受止部位としている。すなわち、第２膨張部としての上側膨張部２５は、膨張完了時、収納部位としてのケース１２側の前端２５ａ側から後端２５ｂ側を、斜め上後方向に延ばす方向として、後端２５ｂ付近において、前方移動する乗員ＯＰの頭部Ｈを受止可能とし、かつ、受止時に後端２５ｂ付近を前端２５ａ側に接近させるような圧縮変形を可能として、後端２５ｂ付近や前端２５ａ付近を、第３膨張部としての後側膨張部２９や第１膨張部としての下側膨張部２７に連結支持させている。具体的には、第３膨張部としての後側膨張部２９の上端２９ａが、上側膨張部２５の後端２５ｂの上下動を規制するように、上側膨張部２５の後端２５ｂに連結され、そしてまた、上側膨張部２５の前端２５ａが、車体側部位としてのインパネ２の上面２ａからの反力を確保可能となるように、第１膨張部としての下側膨張部２７の前端（上端）２７ａが、上側膨張部２５の前端２５ａに連結されている。 The rear inflation portion 29 of the airbag 20 at the completion of inflation is configured such that the upper end portion 29a that intersects the upper inflation portion 25 is arranged rearward from the lower end portion 29b that intersects the lower inflation portion 27. It is The rear side inflation portion 29 of the airbag 20 at the completion of inflation has a receiving area 30 that receives the occupant OP on the rear surface 29d side, a head receiving area 30a on the upper side of the receiving area 30, and a chest on the lower side. It becomes the reception area 30b. In particular, in the head receiving area 30a of the airbag 20, the vicinity of the rear end 25b of the upper inflatable portion 25 receives a high reaction force when receiving, and receives the head H as a portion to be protected of the occupant OP. It is used as a receiving part. That is, the upper expansion portion 25 as the second expansion portion extends obliquely upward and rearward from the front end 25a to the rear end 25b of the case 12 as a storage portion when the expansion is completed, and extends in the vicinity of the rear end 25b. , making it possible to receive the head H of the occupant OP moving forward, and to enable compressive deformation such that the vicinity of the rear end 25b approaches the front end 25a side when receiving it, so that the vicinity of the rear end 25b and the vicinity of the front end 25a can be received. It is connected to and supported by a rear expansion portion 29 as a third expansion portion and a lower expansion portion 27 as a first expansion portion. Specifically, the upper end 29a of the rear inflatable portion 29 as the third inflatable portion is connected to the rear end 25b of the upper inflatable portion 25 so as to restrict the vertical movement of the rear end 25b of the upper inflatable portion 25, Further, the front end (upper end) of the lower expansion portion 27 as the first expansion portion is arranged so that the front end 25a of the upper expansion portion 25 can secure the reaction force from the upper surface 2a of the instrument panel 2 as the vehicle body side portion. 27a is connected to the front end 25a of the upper expansion portion 25. As shown in FIG.

そして、このエアバッグ２０は、外表面の周壁２１が、外周側の外側壁２１ａと内周側の内側壁２１ｂとを備えて構成されている。エアバッグ２０は、図５～７に示すように、外側壁２１ａを形成する外周側基布５０と、内側壁２１ｂを形成する内周側基布５１と、の二枚から周壁２１が形成されている。エアバッグ２０は、内周側基布５１の左右方向の側縁５１ａ，５１ｂを、外周側基布５０の左右方向の側縁５０ａ，５０ｂと結合（縫合）するとともに、内周側基布５１の前後方向の端縁５１ｃ，５１ｄ相互を、未縫合部位５１ｅを残して、縫合し、また、外周側基布５０の前後方向の端縁５０ｃ，５０ｄ相互を縫合すれば、周壁２１を形成できる。 The peripheral wall 21 of the airbag 20 has an outer peripheral wall 21a and an inner peripheral wall 21b. As shown in FIGS. 5 to 7, the airbag 20 has a peripheral wall 21 formed of two pieces, an outer peripheral side base fabric 50 forming an outer side wall 21a and an inner peripheral side base fabric 51 forming an inner side wall 21b. ing. In the airbag 20, the lateral side edges 51a and 51b of the inner peripheral side base fabric 51 are joined (stitched) to the lateral side edges 50a and 50b of the outer peripheral side base fabric 50, and the inner peripheral side base fabric 51 The peripheral wall 21 can be formed by stitching the front and rear edges 51c and 51d of the outer peripheral base fabric 50, leaving an unstitched portion 51e, and stitching the front and rear edges 50c and 50d of the outer peripheral base cloth 50. .

なお、上側膨張部２５、下側膨張部２７、及び、後側膨張部２９は、それぞれ、膨張時の外側壁２１ａと内側壁２１ｂとの離隔距離を規定できるように、内部に、連結片３８，３９，４０を配設させている。各連結片３８，３９，４０は、内側壁２１ｂに連結される内側布３８ａ，３９ａ，４０ａと、外側壁２１ａに連結される外側布３８ｂ，３９ｂ，４０ｂと、から構成されている。そして、内側布３８ａ，３９ａ，４０ａを、内側壁２１ｂを形成する内周側基布５１に縫合しておき、外側布３８ｂ，３９ｂ，４０ｂを、外側壁２１ａを形成する外周側基布５０に縫合しておき、内周側基布５１と外周側基布５０とを縫合する際、対応する内側布３８ａ，３９ａ，４０ａと外側布３８ｂ，３９ｂ，４０ｂとの相互を縫合して、連結片３８を上側膨張部２５の前後方向の中間部位に配設し、連結布３９を下側膨張部２７の前後方向の中間部位に配設し、連結布４０を後側膨張部２９の上下方向の中間部位に、配設させている。 Each of the upper inflatable portion 25, the lower inflatable portion 27, and the rear inflatable portion 29 has a connecting piece 38 inside so as to define the separation distance between the outer wall 21a and the inner wall 21b when inflated. , 39 and 40 are arranged. Each connecting piece 38, 39, 40 is composed of inner cloths 38a, 39a, 40a connected to the inner wall 21b and outer cloths 38b, 39b, 40b connected to the outer wall 21a. Then, the inner fabrics 38a, 39a, 40a are sewn to the inner peripheral side base fabric 51 forming the inner wall 21b, and the outer fabrics 38b, 39b, 40b are sewn to the outer peripheral side base fabric 50 forming the outer wall 21a. When stitching the inner peripheral side base fabric 51 and the outer peripheral side base fabric 50, the corresponding inner fabrics 38a, 39a, 40a and outer fabrics 38b, 39b, 40b are sewn together to form connecting pieces. 38 is arranged at the intermediate portion of the upper inflatable portion 25 in the longitudinal direction, the connecting cloth 39 is arranged in the intermediate portion of the lower inflatable portion 27 in the longitudinal direction, and the connecting cloth 40 is arranged in the vertical direction of the rear inflatable portion 29. It is arranged in the intermediate part.

また、エアバッグ２０は、外側壁２１ａに、膨張用ガスＧを流入させる流入用開口２２を配設させている。流入用開口２２は、円形に開口するとともに、エアバッグ２０の膨張完了時の上側膨張部２５と下側膨張部２７との交差部３４の下面側における外側壁２１ａ（外周側基布５０）に、配設されている。流入用開口２２の周縁には、既述したように、リテーナ１７の各ボルト１８が挿通する取付孔２３が設けられている。 Further, the airbag 20 has an inflow opening 22 through which the inflation gas G is introduced in the outer wall 21a. The inflow opening 22 is formed in a circular shape, and is formed in the outer wall 21a (the outer base fabric 50) on the lower surface side of the intersection 34 between the upper inflatable portion 25 and the lower inflatable portion 27 when the airbag 20 completes inflation. , are arranged. Attachment holes 23 through which the bolts 18 of the retainer 17 are inserted are provided on the periphery of the inflow opening 22, as described above.

さらに、後側膨張部２９の下端２９ｂ付近における内側壁２１ｂには、余剰の膨張用ガスＧを排気するベントホール２４，２４が開口されている。 Further, vent holes 24, 24 for exhausting surplus inflation gas G are opened in the inner wall 21b near the lower end 29b of the rear inflation portion 29. As shown in FIG.

なお、連結布２８，２９，３０、流入用開口２２、ベントホール２４の配設部位には、所定形状の補強布（図符号省略）が配設されている。 Reinforcing cloths (not shown) having a predetermined shape are disposed at the portions where the connecting cloths 28, 29, 30, the inflow opening 22, and the vent holes 24 are disposed.

そして、エアバッグ２０は、車両搭載状態での膨張完了時に、上側膨張部２５、下側膨張部２７、及び、後側膨張部２９が、それぞれ、断面を、左右両縁を丸くした略長方形状として、略柱状に膨張する形状とし、そして、各部の長さ寸法ＬＵ，ＬＤ，ＬＵ（図３参照）として、ＬＵ＜ＬＤ＋ＬＢ、かつ、ＬＵ＞ＬＤの関係を維持するように、設定されている。 When the airbag 20 is fully inflated in the vehicle-mounted state, the upper inflatable portion 25, the lower inflatable portion 27, and the rear inflatable portion 29 each have a substantially rectangular cross-section with both left and right edges rounded. , and the length dimensions LU, LD, and LU (see FIG. 3) of each part are set so as to maintain the relationships LU < LD + LB and LU > LD. .

長さ寸法ＬＵは、上側膨張部２５の長さ寸法であり、収納部位としてのケース１２から突出した状態での上側膨張部２５における下側膨張部２７と交差する前端部位２５ａから後側膨張部２９と交差する後端部位２５ｂまでの前後方向の長さ寸法である。長さ寸法ＬＤは、下側膨張部２７における上側膨張部２５と交差する前端部位２７ａから後側膨張部２９と交差する後端部位２７ｂまでの前後方向の長さ寸法である。長さ寸法ＬＢは、後側膨張部２９における上側膨張部２５と交差する上端部位２９ａから下側膨張部２７と交差する下端部位２９ｂまでの上下方向の長さ寸法である。 The length LU is the length of the upper inflatable portion 25, and extends from the front end portion 25a of the upper inflatable portion 25 protruding from the case 12 as a housing portion to the rear inflatable portion. 29 to a rear end portion 25b that intersects with 29 in the front-rear direction. The length LD is the length in the front-rear direction from the front end portion 27a of the lower expansion portion 27 that intersects the upper expansion portion 25 to the rear end portion 27b that intersects the rear expansion portion 29. As shown in FIG. The length LB is the length in the vertical direction from the upper end portion 29a of the rear expansion portion 29 that intersects with the upper expansion portion 25 to the lower end portion 29b that intersects with the lower expansion portion 27 .

そして、上側膨張部２５の長さ寸法ＬＵが、下側膨張部２７の長さ寸法ＬＤと後側膨張部２９の長さ寸法ＬＢとの合計より短く、かつ、下側膨張部２７の長さ寸法ＬＤより長くしている。 The length LU of the upper inflatable portion 25 is shorter than the sum of the length LD of the lower inflatable portion 27 and the length LB of the rear inflatable portion 29, and the length of the lower inflatable portion 27 is It is longer than the dimension LD.

第１実施形態の場合、上側膨張部２５の長さ寸法ＬＵは、約５５０～６５０ｍｍ、下側膨張部２７の長さ寸法ＬＤは、約３８０～４８０ｍｍ、後側膨張部２９の長さ寸法ＬＢは、約４００～５００ｍｍとしている。また、後側膨張部２９の上端部位２９ａと下端部位２９ｂとの前後方向の離隔距離ＬＬは、約５０～１５０ｍｍとしている。 In the case of the first embodiment, the length LU of the upper expansion portion 25 is approximately 550-650 mm, the length LD of the lower expansion portion 27 is approximately 380-480 mm, and the length LB of the rear expansion portion 29 is approximately 380-480 mm. is about 400-500 mm. The distance LL between the upper end portion 29a and the lower end portion 29b of the rear expansion portion 29 in the front-rear direction is about 50 to 150 mm.

なお、上側膨張部２５の前端２５ａと下側膨張部２７の前端２７ａとは、ケース１２の上方におけるインパネ２の上面２ａ側に配置されて、相互の交差部３４であり、相互に一致している。また、上側膨張部２５の後端２５ｂと後側膨張部２９の上端２９ａとは、相互の交差部３５であり、相互に一致している。同様に、下側膨張部２７の後端２７ｂと後側膨張部２９の下端２９ｂとは、相互の交差部３６であり、相互に一致している。 The front end 25a of the upper expansion portion 25 and the front end 27a of the lower expansion portion 27 are arranged above the case 12 on the side of the upper surface 2a of the instrument panel 2, are mutually intersecting portions 34, and coincide with each other. there is Further, the rear end 25b of the upper expansion portion 25 and the upper end 29a of the rear expansion portion 29 are a mutual crossing portion 35 and coincide with each other. Similarly, the rear end 27b of the lower inflatable portion 27 and the lower end 29b of the rear inflatable portion 29 are a mutual crossing portion 36 and coincide with each other.

また、交差部３４，３５，３６の近傍には、連結片３８，３９，４０が配設されておらず、膨張時のエアバッグ２０が、交差部３４，３５，３６の位置で屈曲して、上側膨張部２５、下側膨張部２７、及び、後側膨張部２９を、所定長さとして、円滑に略三角環状として、膨張を完了できるように構成されている。 Also, the connection pieces 38, 39, 40 are not disposed near the intersections 34, 35, 36, and the airbag 20 when inflated is bent at the intersections 34, 35, 36. , the upper inflatable portion 25, the lower inflatable portion 27, and the rear inflatable portion 29 have a predetermined length and are formed in a substantially triangular ring shape so as to complete the inflation smoothly.

さらに、第１実施形態のエアバッグ２０では、膨張時において、第２膨張部としての上側膨張部２５が、収納部位としてのケース１２から後方に延びる方向（略柱状の前端２５ａ側から後端２５ｂ側に延びる軸方向）ＬＸを、斜め上後方向として、乗員保護装置１０の作動時に前方移動する乗員ＯＰの頭部Ｈの移動方向ＨＭに対して対向する方向に沿う方向とするように、配設されている（図１参照）。なお、第１実施形態の場合には、車両１の前面衝突時において、シートベルト６を装着してシート４に着座した標準男性（男性ダミーＡＭ５０）の頭部Ｈの移動方向ＨＭが、斜め前下向きの方向として、その移動方向ＨＭと略平行で、かつ、若干、頭部Ｈ自体の移動方向ＨＭの上方に、上側膨張部２５の軸方向ＬＸが配設されている。 Furthermore, in the airbag 20 of the first embodiment, when inflated, the upper inflatable portion 25 as the second inflatable portion extends rearward from the case 12 as the storage portion (from the substantially columnar front end 25a to the rear end 25b). Axial direction LX extending to the side) is an obliquely upward and rearward direction, and is arranged so as to be a direction along a direction opposite to a moving direction HM of the head H of the occupant OP moving forward when the occupant protection device 10 is actuated. is provided (see FIG. 1). In the case of the first embodiment, at the time of a frontal collision of the vehicle 1, the moving direction HM of the head H of the standard male (male dummy AM50) seated on the seat 4 with the seat belt 6 worn is obliquely forward. As the downward direction, the axial direction LX of the upper expandable portion 25 is arranged substantially parallel to the moving direction HM and slightly above the moving direction HM of the head H itself.

また、この軸方向ＬＸは、第１実施形態の場合、上側膨張部２５がウインドシールド３の下面３ａと接触する構成であり、上側膨張部２５のウインドシールド３の下面３ａに案内されて膨張することから、ウインドシールド３の下面３ａに沿った上側膨張部２５の突出方向に、近似している。 In the case of the first embodiment, the upper expansion portion 25 contacts the lower surface 3a of the windshield 3 in the axial direction LX. Therefore, it approximates the projecting direction of the upper expansion portion 25 along the lower surface 3 a of the windshield 3 .

また、第１実施形態のエアバッグ２０では、膨張時に、後側膨張部２９が後方へ湾曲するように突出する状態とならずに、膨張完了時の略三角環状の状態を維持し易いように、前後テザー４２を配設させている。前後テザー４２は、後端４２ｃを、後側膨張部２９の前面２９ｃ側であって、内側壁２１ｂにおける連結布４０の内側布４０ａとの縫合部位に縫合させ、幅狭となった前端４２ａを、収納部位としてのケース１２の底壁部１３の後部１３ｂ側に固定している。具体的には、前端４２ａは、リテーナ１７のボルト１８を挿通させる取付孔４２ｂ，４２ｂを備え、各取付孔４２ｂにボルト１８を挿通させて、リテーナ１７に係止されることにより、収納部位としてのケース１２の底壁部１３の後部１３ｂ側（図２参照）に取付固定されている。なお、前後テザー４２は、後端４２ｃ側が中空部３２に配置されているものの、前端４２ａ側が、内周側基布５１の端縁５１ｃ，５１ｄ相互を縫合していない未縫合部位５１ｅを経て、下側膨張部２７内を挿通し、リテーナ１７のボルト１８に係止される構成としている。 Further, in the airbag 20 of the first embodiment, the rear inflation portion 29 does not protrude so as to curve rearward when inflated, and is easily maintained in a substantially triangular annular shape when inflation is completed. , front and rear tethers 42 are arranged. The front and rear tethers 42 have their rear ends 42c sewn to the inner cloth 40a of the connecting cloth 40 on the inner wall 21b on the front surface 29c side of the rear inflation portion 29, and the narrowed front ends 42a are sewn to the inner cloth 40a. , is fixed to the rear portion 13b side of the bottom wall portion 13 of the case 12 as a storage portion. Specifically, the front end 42a is provided with mounting holes 42b, 42b through which the bolts 18 of the retainer 17 are inserted. It is attached and fixed to the rear portion 13b side of the bottom wall portion 13 of the case 12 (see FIG. 2). Although the front and rear tethers 42 are arranged in the hollow portion 32 on the rear end 42c side, the front end 42a side passes through an unstitched portion 51e where the edges 51c and 51d of the inner peripheral base cloth 51 are not sewn together. It is configured to be inserted through the inside of the lower expansion portion 27 and locked to the bolt 18 of the retainer 17 .

さらに、エアバッグ２０では、膨張完了時の上側膨張部２５と下側膨張部２７との相互を連結して、上側膨張部２５と下側膨張部２７との相互の離隔方向への移動を規制する上下テザー４４、を配設させている。上下テザー４４は、中空部３２の前部側を塞ぐように配設されて、上側膨張部２５の内側壁２１ｂに結合される上側布４５と、下側膨張部２７の内側壁２１ｂに結合される下側布４６と、から構成されている。上側布４５と下側布４６とは、共に後方側の幅寸法を広くした台形形状としている。そして、上側布４５は、上縁４５ａを、上側膨張部２５の内側壁２１ｂに結合させて、具体的には、内周側基布５１における連結片３８の内側布３８ａの縫合部位付近に縫合し、また、下側布４６は、下縁４６ｂを、下側膨張部２７の内側壁２１ｂに結合させて、具体的には、内周側基布５１における連結布３９の内側布３９ａの縫合部位付近に縫合し、そして、上側布４５の下縁４５ｂと下側布４６の上縁４６ａとを相互に縫合して、配設されている。 Furthermore, in the airbag 20, the upper inflatable portion 25 and the lower inflatable portion 27 are connected to each other when inflation is completed, and movement of the upper inflatable portion 25 and the lower inflatable portion 27 in the separation direction is restricted. The upper and lower tethers 44 are arranged. The upper and lower tethers 44 are arranged to block the front side of the hollow portion 32 and are connected to the upper cloth 45 connected to the inner wall 21b of the upper expansion portion 25 and the inner wall 21b of the lower expansion portion 27. and a lower fabric 46 that Both the upper cloth 45 and the lower cloth 46 have a trapezoidal shape with a wider width on the rear side. The upper edge 45a of the upper cloth 45 is joined to the inner wall 21b of the upper inflation portion 25, and more specifically, sewn near the sewn portion of the inner cloth 38a of the connecting piece 38 in the inner peripheral side base cloth 51. In addition, the lower edge 46b of the lower cloth 46 is joined to the inner wall 21b of the lower inflatable portion 27. Specifically, the inner cloth 39a of the connecting cloth 39 in the inner peripheral side base cloth 51 is sewn. The lower edge 45b of the upper cloth 45 and the upper edge 46a of the lower cloth 46 are sewn together.

さらにまた、エアバッグ２０は、膨張完了時の上側膨張部２５の上面２５ｃ側と収納部位のケース１２側とを連結して、上側膨張部２５のウインドシールド３から離隔する下方移動を規制する上外側テザー４８、を配設させている。上外側テザー４８は、後端４８ｃを連結片３８の縫合部位近傍の上側膨張部２５における外側壁２１ａに縫合して、前端４８ａを、収納部位としてのケース１２の底壁部１３の前部１３ａ側（図２参照）に固定している。具体的には、前端４８ａは、リテーナ１７のボルト１８を挿通させる取付孔４８ｂ，４８ｂを備え、各取付孔４８ｂにボルト１８を挿通させて、リテーナ１７に係止されることにより、収納部位としてのケース１２の底壁部１３に取付固定されている。 Furthermore, the airbag 20 connects the upper surface 25c side of the upper inflatable portion 25 and the case 12 side of the storage portion at the time of completion of inflation, thereby restricting the downward movement of the upper inflatable portion 25 away from the windshield 3. An outer tether 48 is provided. The upper and outer tether 48 has its rear end 48c sewn to the outer wall 21a of the upper expansion portion 25 near the sewn portion of the connecting piece 38, and its front end 48a to the front portion 13a of the bottom wall portion 13 of the case 12 as a storage portion. side (see Fig. 2). Specifically, the front end 48a is provided with mounting holes 48b, 48b through which the bolts 18 of the retainer 17 are inserted. is attached and fixed to the bottom wall portion 13 of the case 12 .

また、エアバッグ２０内には、流入用開口２２の周縁に、流入用開口２２から流入する膨張用ガスを左右両側に流す図示しない整流布が配設されている。 Further, in the airbag 20, along the periphery of the inflow opening 22, a straightening cloth (not shown) is arranged to flow the inflation gas flowing in from the inflow opening 22 to both left and right sides.

なお、外周側基布５０や内周側基布５１、連結片３８，３９，４０、あるいは、各種テザー４２，４４，４８は、可撓性を有したポリアミドやポリエステル等の織布から形成されている。 In addition, the outer peripheral side base fabric 50, the inner peripheral side base fabric 51, the connection pieces 38, 39, 40, or various tethers 42, 44, 48 are formed of a flexible woven fabric such as polyamide or polyester. ing.

第１実施形態の乗員保護装置１０では、リテーナ１７を内周面側に配置させた状態のエアバッグ２０を、折り畳んでケース１２に収納するとともに、流入用開口２２の周縁と、インフレーター１６とを、リテーナ１７のボルト１８とナット１９とを利用して、ケース１２の底壁部１３に固定し、そして、ケース１２をインパネ２内に取付固定しつつ、インフレーター１６に図示しない制御装置からの作動信号入力用のリード線を結線すれば、車両１に搭載することができる。なお、エアバッグ２０をケース１２に固定する際、エアバッグ２０内の前後テザー４２の前端４２ａや、エアバッグ２０外の上外側テザー４８の前端４８ａも、リテーナ１７のボルト１８を利用して、ケース１２の底壁部１３に固定しておく。 In the occupant protection device 10 of the first embodiment, the airbag 20 with the retainer 17 arranged on the inner peripheral surface side is folded and stored in the case 12, and the peripheral edge of the inflow opening 22 and the inflator 16 are separated. The retainer 17 is fixed to the bottom wall 13 of the case 12 using the bolts 18 and nuts 19 of the retainer 17, and while the case 12 is fixedly mounted in the instrument panel 2, the inflator 16 is operated by a control device (not shown). It can be mounted on the vehicle 1 by connecting lead wires for signal input. When fixing the airbag 20 to the case 12, the front ends 42a of the front and rear tethers 42 inside the airbag 20 and the front ends 48a of the upper and outer tethers 48 outside the airbag 20 are also secured using the bolts 18 of the retainer 17. It is fixed to the bottom wall portion 13 of the case 12 .

そして、乗員保護装置１０の車両Ｖへの搭載後、車両１が衝突して、図示しない制御装置が車両１の衝突を検知して、インフレーター１６を作動させれば、インフレーター１６がエアバッグ２０に膨張用ガスＧを供給することから、エアバッグ２０が、図８，９に示すように、収納部位としてのケース１２から後方へ展開膨張することとなる。 After the occupant protection device 10 is mounted on the vehicle V, the vehicle 1 collides, and if a control device (not shown) detects the collision of the vehicle 1 and activates the inflator 16, the inflator 16 is activated by the airbag 20. Since the inflation gas G is supplied, the airbag 20 is deployed and inflated rearward from the case 12 as a storage portion, as shown in FIGS.

そして、エアバッグ２０が膨張を完了させれば、後側膨張部２９が、上端部位２９ａを下端部位２９ｂより後方側に配置させており、図１の二点鎖線に示すように、乗員ＯＰが前方移動してくれば、頭部Ｈ付近が、後側膨張部２９の後面２９ｄにおける受止エリア３０の上部側の頭部受止エリア３０ａ、詳しくは、第２膨張部としての上側膨張部２５の後端２５ｂ付近の受止部位、に受け止められる。その際、後側膨張部２９は、下端部位２９ｂより上端部位２９ａ側を後方に張り出している形状であることから、中空部３２を狭めるように曲げ変形する挙動でなく、略柱状に収納部位としてのケース１２から斜め上後方に延びた上側膨張部２５を、座屈変形させるような状態（上側膨張部２５が前後方向の長さ寸法ＬＵを圧縮するような状態）として、乗員ＯＰを受け止める挙動となる。そのため、膨張を完了させたエアバッグ２０は、後側膨張部２９の曲げ変形より高い反力を確保できる上側膨張部２５の座屈変形を伴なって、変形することから、安定した反力を確保して、乗員ＯＰの頭部Ｈを受け止めることができる。そして、頭部Ｈを受け止められて運動エネルギーを低減された状態で前進移動する乗員ＯＰは、胸部Ｂを、受止エリア３０の下部側の胸部受止エリア３０ｂにより、受け止められて、保護される。勿論、エアバッグ２０は、中空部３２を配設させていることから、外形形状の全域を膨張部位とする場合に比べて、膨張用ガスＧを流入させる容量は少なく、迅速に膨張を完了させることができる。 Then, when the airbag 20 completes inflation, the rear inflation portion 29 has the upper end portion 29a positioned rearward of the lower end portion 29b, and as indicated by the two-dot chain line in FIG. When the head H moves forward, the vicinity of the head H will move to the head receiving area 30a on the upper side of the receiving area 30 on the rear surface 29d of the rear inflation section 29, more specifically, the upper inflation section 25 as the second inflation section. is received at a receiving portion near the rear end 25b of the . At this time, since the rear expansion portion 29 has a shape in which the upper end portion 29a side protrudes rearward from the lower end portion 29b, it does not bend and deform so as to narrow the hollow portion 32, but has a substantially columnar shape as a storage portion. The behavior of receiving the occupant OP in a state in which the upper expansion portion 25 extending obliquely upward and rearward from the case 12 is subjected to buckling deformation (a state in which the upper expansion portion 25 compresses the length dimension LU in the front-rear direction). becomes. Therefore, the fully inflated airbag 20 deforms with the buckling deformation of the upper inflating portion 25, which can ensure a higher reaction force than the bending deformation of the rear inflating portion 29, so that a stable reaction force is generated. It is possible to secure and receive the head H of the occupant OP. The chest B of the occupant OP moving forward with the head H received and the kinetic energy reduced is received and protected by the chest receiving area 30b on the lower side of the receiving area 30. . Of course, since the airbag 20 is provided with the hollow portion 32, compared with the case where the entire area of the outer shape is used as the inflatable portion, the volume of the inflating gas G flowing therein is small, and the inflation can be completed quickly. be able to.

したがって、第１実施形態の乗員保護装置１０では、エアバッグ２０が、迅速に膨張を完了させることができ、かつ、乗員ＯＰの受止時に、安定した反力を確保することができる。 Therefore, in the occupant protection device 10 of the first embodiment, the airbag 20 can quickly complete inflation, and can secure a stable reaction force when receiving the occupant OP.

そして、第１実施形態の乗員保護装置１０では、エアバッグ２０の第２膨張部としての上側膨張部２５が、収納部位としてのケース１２から後方に延びる方向ＬＸを、すなわち、膨張完了時の前端２５ａから後端２５ｂに延びる方向ＬＸを、乗員保護装置１０の作動時に前方移動する乗員ＯＰの頭部Ｈの移動方向ＨＭに対して対向する方向に沿う方向とするように、配設されている。 In the occupant protection device 10 of the first embodiment, the upper inflation portion 25 as the second inflation portion of the airbag 20 extends rearward from the case 12 as the storage portion, i. The direction LX extending from 25a to the rear end 25b is the direction along the direction facing the moving direction HM of the head H of the occupant OP moving forward when the occupant protection device 10 is actuated. .

そのため、第１実施形態では、エアバッグ２０の上側膨張部２５が、乗員保護装置１０の作動時に前方移動する乗員ＯＰの頭部Ｈの移動方向ＨＭに対して対向する方向に沿う方向に沿って、ケース１２から後方に延びており、乗員ＯＰの頭部Ｈを受け止めて座屈変形するような状態となる際、一層、的確に、安定した反力を確保できる。また、第１実施形態では、エアバッグ２０の膨張完了直前に乗員ＯＰの頭部Ｈを受け止めることとなっても、図８のＡ，Ｂや図９のＡに示すように、上側膨張部２５の後端２５ｂ付近における後側膨張部２９の上端２９ａ付近を含めた膨張途中の受止エリア３０ｃで、前方移動する乗員ＯＰの頭部Ｈを受止可能となることから、エアバッグ２０の初期拘束時にも、一定の反力を確保できて、エアバッグ２０の初期拘束性能を向上させることができる。 Therefore, in the first embodiment, the upper inflatable portion 25 of the airbag 20 extends along the direction facing the moving direction HM of the head H of the occupant OP moving forward when the occupant protection device 10 is activated. , extends rearward from the case 12, and when it receives the head H of the occupant OP and undergoes buckling deformation, a more accurate and stable reaction force can be ensured. In addition, in the first embodiment, even if the head H of the occupant OP is received immediately before the inflation of the airbag 20 is completed, the upper inflation portion 25 is still inflated as shown in FIGS. 8A and 8B and FIG. The head H of the occupant OP moving forward can be received in the receiving area 30c that is in the middle of inflation including the vicinity of the upper end 29a of the rear inflation portion 29 near the rear end 25b. A constant reaction force can be secured even during restraint, and the initial restraint performance of the airbag 20 can be improved.

また、第１実施形態の乗員保護装置１０では、エアバッグ２０が、車両搭載状態での膨張完了時、収納部位としてのケース１２から突出した状態での上側膨張部２５における下側膨張部２７と交差する前端部位２５ａから後側膨張部２９と交差する後端部位２５ｂまでの前後方向の長さ寸法ＬＵを、下側膨張部２７における上側膨張部２５と交差する前端部位２７ａから後側膨張部２９と交差する後端部位２７ｂまでの前後方向の長さ寸法ＬＤと、後側膨張部２９における上側膨張部２５と交差する上端部位２９ａから下側膨張部２７と交差する下端部位２９ｂまでの上下方向の長さ寸法ＬＢと、の合計より短く、かつ、下側膨張部２７の前後方向の長さ寸法ＬＤより、長くしている。 Further, in the occupant protection device 10 of the first embodiment, when the airbag 20 is fully inflated in the vehicle-mounted state, the airbag 20 protrudes from the case 12 serving as a housing portion, and the lower inflatable portion 27 of the upper inflatable portion 25 and the lower inflatable portion 27 protrude from the case 12 as a storage portion. The length dimension LU in the front-rear direction from the intersecting front end portion 25a to the rear end portion 25b intersecting the rear expansion portion 29 is defined by 29, and a vertical dimension LD from an upper end portion 29a intersecting the upper inflatable portion 25 to a lower end portion 29b intersecting the lower inflatable portion 27 in the rear inflatable portion 29. It is shorter than the sum of the length dimension LB in the direction and longer than the length dimension LD in the front-rear direction of the lower expansion portion 27 .

そのため、第１実施形態では、エアバッグ２０が膨張すると、上側膨張部２５、下側膨張部２７、及び、後側膨張部２９が、それぞれ、略柱状として、略三角環状に膨張を完了させることとなり、その際、下側膨張部２７が、ケース１２から斜め上後方に延びる上側膨張部２５より短い長さ寸法ＬＤとして、インパネ２の上面２ａ側に沿って下後方へ延びて膨張することとなり、上側膨張部２５の長さ寸法ＬＵが、下側膨張部２７の長さ寸法ＬＤより長くしているものの、下側膨張部２７と後側膨張部２９との合計の長さ寸法（ＬＤ＋ＬＢ）より、小さいことから、後側膨張部２９は、安定して、上端部位２９ａより下端部位２９ｂを前方に配置させた状態（すなわち、上端部位２９ａを下端部位２９ｂより後方に配置させた状態）を確保できることとなり、その結果、安定して、膨張完了時の第２膨張部としての上側膨張部２５の後端付近２５ｂ付近が、エアバッグ２０の最後端となって、前進移動する乗員ＯＰの頭部Ｈを、上側膨張部２５を座屈変形させるような挙動の安定した反力により、受け止めることができる状態、を確保できる。 Therefore, in the first embodiment, when the airbag 20 is inflated, the upper inflatable portion 25, the lower inflatable portion 27, and the rear inflatable portion 29 are substantially columnar and complete inflation in a substantially triangular ring shape. At this time, the lower expansion portion 27 expands downward and rearward along the upper surface 2a side of the instrument panel 2 with a length dimension LD shorter than the upper expansion portion 25 extending obliquely upward and rearward from the case 12. Although the length LU of the upper expansion portion 25 is longer than the length LD of the lower expansion portion 27, the total length of the lower expansion portion 27 and the rear expansion portion 29 (LD+LB). Since the rear inflation portion 29 is smaller, the rear inflatable portion 29 stably maintains the state in which the lower end portion 29b is arranged forward of the upper end portion 29a (that is, the state in which the upper end portion 29a is arranged behind the lower end portion 29b). As a result, the vicinity of the rear end 25b of the upper inflatable portion 25 as the second inflatable portion at the completion of inflation stably becomes the rearmost end of the airbag 20, and the head of the occupant OP moving forward stably. It is possible to secure a state in which the portion H can be received by a stable reaction force that causes the upper expansion portion 25 to undergo buckling deformation.

さらに、第１実施形態の乗員保護装置１０では、エアバッグ２０が、膨張完了時の第３膨張部としての後側膨張部２９と収納部位としてのケース１２側とを連結して、後側膨張部２９のケース１２から離隔する後方移動を規制可能な前後テザー４２、を配設させている。 Further, in the occupant protection device 10 of the first embodiment, the airbag 20 connects the rear inflation portion 29 as the third inflation portion and the case 12 side as the housing portion when inflation is completed, thereby achieving rear inflation. Front and rear tethers 42 that can restrict rearward movement of the portion 29 away from the case 12 are provided.

そのため、第１実施形態では、後側膨張部２９が、前後テザー４２により、全体的あるいは部分的な後方移動を規制されることから、膨張完了時のエアバッグ２０の略三角環状の形状が安定することとなって、エアバッグ２０の乗員保護性能（前進移動する乗員ＯＰの頭部Ｈを、上側膨張部２５を座屈変形させるような挙動の安定した反力により、受け止めることができる性能）を安定させることに寄与できる。 Therefore, in the first embodiment, the rear inflation portion 29 is restricted from moving rearward wholly or partially by the front and rear tethers 42, so that the substantially triangular annular shape of the airbag 20 when inflation is completed is stable. As a result, the occupant protection performance of the airbag 20 (the ability to receive the head H of the occupant OP moving forward with a stable reaction force that causes the upper inflatable portion 25 to buckle and deform). can contribute to stabilizing

また、第１実施形態の乗員保護装置１０では、エアバッグ２０が、膨張完了時の第２膨張部としての上側膨張部２５と第１膨張部としての下側膨張部２７との相互を連結して、上側膨張部２５と下側膨張部２７との相互の離隔方向への移動を規制する上下テザー４４、を配設させている。 Further, in the occupant protection device 10 of the first embodiment, the airbag 20 connects the upper inflatable portion 25 as the second inflatable portion and the lower inflatable portion 27 as the first inflatable portion when inflation is completed. An upper and lower tether 44 is provided to restrict the movement of the upper expansion portion 25 and the lower expansion portion 27 in the separation direction.

そのため、第１実施形態では、上下テザー４４により、エアバッグ２０の膨張完了時の上側膨張部２５と下側膨張部２７との相互の離隔状態を安定させることできて、膨張完了時のエアバッグ２０の略三角環状の形状を安定させて、エアバッグ２０の乗員保護性能を安定させることに寄与できる。 Therefore, in the first embodiment, the upper and lower tethers 44 can stabilize the mutual separation state between the upper inflatable portion 25 and the lower inflatable portion 27 when the inflation of the airbag 20 is completed. By stabilizing the substantially triangular annular shape of the airbag 20, it is possible to contribute to stabilizing the occupant protection performance of the airbag 20.

さらにまた、第１実施形態の乗員保護装置１０では、エアバッグ２０が、膨張完了時の第２膨張部としての上側膨張部２５の上面２５ｃ側と収納部位としてのケース１２側とを連結して、上側膨張部２５のウインドシールド３から離隔する下方移動を規制する上外側テザー４８、を配設させている。 Furthermore, in the occupant protection device 10 of the first embodiment, the airbag 20 connects the upper surface 25c side of the upper inflation portion 25 as the second inflation portion at the completion of inflation and the case 12 side as the storage portion. , an upper outer tether 48 for restricting downward movement of the upper expansion portion 25 away from the windshield 3 .

そのため、第１実施形態では、膨張完了時のエアバッグ２０が、上外側テザー４８により、上側膨張部２５の上面２５ｃ側をウインドシールド３の下面３ａに対して接触させる状態を維持でき、初期拘束時も含めた乗員拘束時において、上側膨張部２５が上面２５ｃ側をウインドシールド３に支持されて、曲げ変形の挙動を抑制して、座屈変形状態の挙動を安定させることができることから、エアバッグ２０は、安定した反力を確保できる良好な乗員拘束性能（前進移動する乗員ＯＰの頭部Ｈを、上側膨張部２５を座屈変形させるような挙動の安定した反力により、受け止めることができる性能）を発揮できる。 Therefore, in the first embodiment, the airbag 20 at the completion of inflation can maintain the state in which the upper surface 25c side of the upper inflation portion 25 is in contact with the lower surface 3a of the windshield 3 by the upper outer tether 48, and the initial restraint can be maintained. When the occupant is restrained including when the upper inflatable portion 25 is supported by the windshield 3 on the upper surface 25c side, the behavior of bending deformation can be suppressed and the behavior of the buckling deformation state can be stabilized. The bag 20 has a good occupant restraint performance that can secure a stable reaction force (the head H of the occupant OP moving forward can be received by a stable reaction force that causes the upper inflatable portion 25 to buckle and deform). performance) can be exhibited.

なお、第１実施形態では、膨張完了時のエアバッグ２０の外側に配設するテザーとして、上側膨張部２５の上面２５ｃ側に配置させた上外側テザー４８を例示したが、エアバッグ２０の膨張時に、下側膨張部２７の下面２７ｄがインパネ２の上面２ａ側に密着できるように、後端側を、下側膨張部２７の下面２７ｄ側に連結し、前端側を、収納部位としのケース１２側に連結するように、下外側テザーを配設してもよい。 In the first embodiment, the upper outer tether 48 arranged on the upper surface 25c side of the upper inflation portion 25 was exemplified as the tether arranged on the outside of the airbag 20 when inflation is completed. The rear end side is connected to the lower surface 27d side of the lower expansion portion 27 so that the lower surface 27d of the lower expansion portion 27 can be in close contact with the upper surface 2a side of the instrument panel 2, and the front end side is a case as a storage portion. A lower outer tether may be arranged to connect to the 12 side.

つぎに、図１０，１１に示す第２実施形態の乗員保護装置１０Ａを説明すると、この乗員保護装置１０Ａは、後席乗員ＢＰの頭部Ｈをエアバッグ６０の保護対象部位とするものである。乗員保護装置１０Ａは、エアバッグ６０の収納部位としてのケース１２を、着座した乗員ＢＰの前方側における車体側部位としての前席のシート４Ａにおける背もたれ部４ａの後面４ａｂ側に、配設させている。また、エアバッグ６０は、膨張時、収納部位としてのケース１２から後方へ突出させて、前方移動する乗員ＢＰを受止可能に膨張する構成として、膨張完了時の第１膨張部６２を、車体側部位としての前席シート４Ａの後面４ａｂ側に沿い、かつ、前席シート４Ａの後面４ａｂ側に支持されるように配設し、そして、膨張完了時の第２膨張部６４を、第１膨張部６２の上端６２ａ付近から後方へ延び、後端６４ｂ付近を、前方移動する乗員ＢＰの頭部Ｈを受け止める受止部位として、配設されている。 Next, an occupant protection system 10A of a second embodiment shown in FIGS. . In the occupant protection device 10A, the case 12 as a storage portion for the airbag 60 is disposed on the rear surface 4ab side of the backrest portion 4a of the front seat 4A as the vehicle body portion in front of the seated occupant BP. there is Further, the airbag 60 projects rearward from the case 12 as a storage portion when inflated so as to be inflated so as to receive the occupant BP moving forward. Along the rear surface 4ab side of the front seat 4A as a side portion, and arranged so as to be supported by the rear surface 4ab side of the front seat 4A, and the second expansion portion 64 at the completion of expansion is placed in the first expansion portion 64. Extending rearward from the vicinity of the upper end 62a of the inflatable portion 62, the vicinity of the rear end 64b is disposed as a receiving portion for receiving the head H of the occupant BP moving forward.

すなわち、このエアバッグ６０は、膨張完了時の形状として、収納部位としてのケース１２から、車体側部位としてのシート４Ａの後面４ａｂに沿うように略柱状として上方に延びて、車体側部位としてのシート４Ａの後面４ａｂに支持される第１膨張部６２と、第１膨張部６２の上下方向の端部（上端）６２ａから、乗員ＢＰの保護対象部位Ｈ側の後方側に、略柱状に延びる第２膨張部６４と、第２膨張部６４の後端６４ｂから略柱状に延びて、第１膨張部６２の上下方向の他方の端部（下端）６２ｂと交差する第３膨張部６６と、を、中空部３２を囲むように配置させた略三角環状としている。そして、エアバッグ６０は、膨張完了時、第２膨張部６４の後端６４ｂ付近を、最後端に配置させて、前方移動する乗員ＢＰの保護対象部位としての頭部Ｈの受止部位とするとともに、第２膨張部６４の後端６４ｂ付近での乗員ＢＰの頭部Ｈの受止時に、第２膨張部６４を、膨張完了形状の略柱状の軸方向ＬＸに沿って後端６４ｂ側を前端６４ａ側に接近させるような圧縮変形可能に、第２膨張部６４の後端６４ｂ付近を、上下動を規制するように、第３膨張部６６の上端６６ａに連結支持させ、かつ、車体側部位としてのシート４Ａの後面４ａｂからの反力を確保可能に、第２膨張部６４の前端６４ａ付近を、シート４Ａの後面４ａｂに当接させるように、第１膨張部６２の上端６２ａと連結させている。略柱状に膨張する各膨張部６２，６４，６６は、断面を、左右両縁を丸くした略長方形状としている（図１１参照）。 That is, the airbag 60 has a substantially columnar shape when it is fully inflated and extends upward along the rear surface 4ab of the seat 4A as the vehicle body side portion from the case 12 as the housing portion. A first inflatable portion 62 supported by the rear surface 4ab of the seat 4A and a vertical end (upper end) 62a of the first inflatable portion 62 extend in a substantially columnar shape toward the rear of the portion H to be protected of the occupant BP. a second inflatable portion 64, a third inflatable portion 66 that extends in a substantially columnar shape from a rear end 64b of the second inflatable portion 64 and intersects the other end (lower end) 62b of the first inflatable portion 62 in the vertical direction; is arranged to surround the hollow portion 32 and has a substantially triangular ring shape. When the airbag 60 is fully inflated, the vicinity of the rear end 64b of the second inflatable portion 64 is positioned at the rearmost end to receive the head H as a protected portion of the occupant BP moving forward. In addition, when the head H of the occupant BP is received near the rear end 64b of the second inflation portion 64, the second inflation portion 64 is moved along the substantially columnar axial direction LX of the inflation completion shape toward the rear end 64b side. The vicinity of the rear end 64b of the second expansion portion 64 is connected to and supported by the upper end 66a of the third expansion portion 66 so as to restrict vertical movement so as to be compressively deformable so as to approach the front end 64a side, and the vehicle body side. The vicinity of the front end 64a of the second inflatable portion 64 is connected to the upper end 62a of the first inflatable portion 62 so as to be in contact with the rear surface 4ab of the seat 4A so that the reaction force from the rear surface 4ab of the seat 4A can be secured. I am letting Each expansion part 62, 64, 66 that expands into a substantially columnar shape has a substantially rectangular cross-section with both left and right edges rounded (see FIG. 11).

なお、このエアバッグ６０でも、第２膨張部６４が、膨張完了時の前端６４ａから後端６４ｂに延びる方向を、乗員保護装置１０Ａの作動時に前方移動する乗員ＢＰの保護対象部位としての頭部Ｈの移動方向ＨＭに対して対向する方向に沿う方向とするように、配設されている。 Also in this airbag 60, the direction in which the second inflation portion 64 extends from the front end 64a to the rear end 64b at the completion of inflation is the head portion of the occupant BP, which is a portion to be protected, which moves forward when the occupant protection device 10A is operated. It is arranged so as to be in the direction opposite to the movement direction HM of H.

また、各膨張部６２，６４，６６の内周壁側と外周壁側とを連結する連結片３８，３９，４０が配設されるとともに、エアバッグ６０の略三角環状とする膨張完了形状を安定させるように、第２膨張部６４と第３膨張部６６との拡開を規制するために、すなわち、第２膨張部６４と第３膨張部６６との相互の離隔方向への移動を規制するために、第２膨張部６４と第３膨張部６６とを連結する上下テザー４４Ａが配設されている。 In addition, connecting pieces 38, 39, 40 are arranged to connect the inner peripheral wall side and the outer peripheral wall side of the respective inflatable portions 62, 64, 66, and the substantially triangular annular shape of the airbag 60 after completion of inflation is stabilized. In order to restrict the expansion of the second inflatable portion 64 and the third inflatable portion 66, that is, to restrict the movement of the second inflatable portion 64 and the third inflatable portion 66 in the separation direction from each other. Therefore, the upper and lower tethers 44A connecting the second expansion portion 64 and the third expansion portion 66 are provided.

この第２実施形態の乗員保護装置１０Ａでは、エアバッグ６０が膨張を完了させれば、第２膨張部６４の後端６４ｂ付近を、乗員ＢＰの頭部Ｈの受止部位としており、乗員ＢＰが前方移動してくれば、乗員ＢＰの保護対象部位としての頭部Ｈが、受止部位としての第２膨張部６４の後端６４ｂ付近に受け止められる。その際、第２膨張部６４が、膨張完了形状の略柱状の軸方向ＬＸに沿って後端６４ｂ側を前端６４ａ側に接近させるような圧縮変形するように、第２膨張部６４の後端６４ｂ付近を、上下動を規制するように、第３膨張部６６に支持させ、かつ、車体側部位としてのシート４Ａからの反力を確保可能に、第２膨張部６４の前端６４ａ付近を、シート４Ａの後面４ａｂに当接させるように、第１膨張部６２と連結させている。そのため、第２膨張部６４は、座屈変形するような状態、換言すれば、膨張完了形状の略柱状の軸方向ＬＸに沿って、後端６４ｂ側を前端６４ａ側に接近させるような圧縮変形状態（第２膨張部６４が前後方向の長さ寸法を圧縮されるような状態）として、乗員ＢＰの保護対象部位としての頭部Ｈを受け止める挙動となる。すなわち、膨張を完了させたエアバッグ６０は、曲げ変形でなく、高い反力を確保できる第２膨張部６４の座屈変形のような圧縮変形を伴なって、変形することから、安定して、所定以上の反力を確保して、乗員ＢＰの保護対象部位としての頭部Ｈを受け止めることができる。勿論、エアバッグ６０は、中空部３２を配設させていることから、外形形状の全域を膨張部位とする場合に比べて、膨張用ガスＧを流入させる容量は少なく、迅速に膨張を完了させることができる。 In the occupant protection system 10A of the second embodiment, when the airbag 60 completes inflation, the vicinity of the rear end 64b of the second inflation portion 64 serves as a receiving portion for the head H of the occupant BP. moves forward, the head H of the occupant BP, which is the part to be protected, is received near the rear end 64b of the second inflatable portion 64, which is the receiving part. At this time, the rear end of the second expansion portion 64 is compressed and deformed such that the rear end 64b side approaches the front end 64a side along the axial direction LX of the generally columnar shape of the expansion completion shape. The vicinity of the front end 64a of the second inflatable portion 64 is supported by the third inflatable portion 66 so as to restrict vertical movement, and the reaction force from the seat 4A as a vehicle body side portion can be secured. It is connected to the first expansion portion 62 so as to contact the rear surface 4ab of the seat 4A. Therefore, the second expansion portion 64 is in a state of buckling deformation, in other words, compression deformation such that the rear end 64b side approaches the front end 64a side along the axial direction LX of the substantially columnar shape of the expanded shape. As a state (a state in which the length dimension in the front-rear direction of the second inflatable portion 64 is compressed), a behavior of receiving the head H as a part to be protected of the occupant BP is performed. That is, the fully inflated airbag 60 deforms not by bending deformation but by compressive deformation such as buckling deformation of the second inflatable portion 64 capable of ensuring a high reaction force. , the head H of the occupant BP, which is a part to be protected, can be received by securing a reaction force of a predetermined level or more. Of course, since the airbag 60 is provided with the hollow portion 32, compared with the case where the entire area of the outer shape is used as the inflatable portion, the volume of the inflating gas G flowing therein is small, and the inflation can be completed quickly. be able to.

したがって、第２実施形態の乗員保護装置１０Ａでも、エアバッグ６０が、迅速に膨張を完了させることができ、かつ、乗員ＢＰの受止時に安定した反力を確保することができる。 Therefore, in the occupant protection system 10A of the second embodiment as well, the airbag 60 can quickly complete its inflation, and can secure a stable reaction force when receiving the occupant BP.

なお、第２実施形態の乗員保護装置１０Ａでも、膨張を完了させたエアバッグ６０は、第２膨張部６４の後端６４ｂ付近で乗員ＢＰの頭部Ｈを受け止めた後には、後端６４ｂが前進移動しており、第３膨張部６６における上端６６ａ付近から下端６６ｂ側に向かうエリアによって、乗員ＢＰの胸部Ｂ付近を受け止めることができて、乗員ＢＰを好適に受け止めて保護できる。 Also in the occupant protection system 10A of the second embodiment, after the fully inflated airbag 60 receives the head H of the occupant BP in the vicinity of the rear end 64b of the second inflation portion 64, the rear end 64b is It moves forward and can receive the vicinity of the chest B of the occupant BP by the area from the vicinity of the upper end 66a to the side of the lower end 66b in the third inflatable portion 66, and can suitably receive and protect the occupant BP.

また、第２実施形態の乗員保護装置１０Ａでは、エアバッグ６０の第１膨張部６２における下端６２ｂ側に、収納部位としてのケース１２を、配設したが、エアバッグ６０の第１膨張部６２における上端６２ａ側に、収納部位としてのケース１２を、配設するように構成してもよい。 Further, in the occupant protection device 10A of the second embodiment, the case 12 as a storage portion is disposed on the side of the lower end 62b of the first inflation portion 62 of the airbag 60. The case 12 as a storage portion may be arranged on the side of the upper end 62a of the .

つぎに、図１２，１３に示す第３実施形態の乗員保護装置１０Ｂを説明すると、この乗員保護装置１０Ｂは、乗員ＯＰの膝部Ｋを保護対象部位とするものである。乗員保護装置１０Ｂは、エアバッグ７０の収納部位としてのケース１２を、着座した乗員ＯＰの下肢Ｌの前方側における車体側部位としてのインパネ２の下部２ｂにおける後面２ｂｂ側に、配設させている。また、エアバッグ７０は、膨張時、収納部位としてのケース１２から後方へ突出して、前方移動する乗員ＯＰの膝部Ｋを受止可能に膨張する構成として、膨張完了時の第１膨張部７２を、車体側部位としてのインパネ２の下部２ｂの後面２ｂｂ側に沿い、かつ、インパネ下部２ｂの後面２ｂｂ側に支持されるように配設し、そして、膨張完了時の第２膨張部７４を、第１膨張部７２の上端７２ａ付近から後方へ延び、後端７４ｂ付近を、前方移動する乗員ＯＰの膝部Ｋを受け止める受止部位として、配設している。 Next, an occupant protection system 10B of a third embodiment shown in FIGS. 12 and 13 will be described. In this occupant protection system 10B, knees K of the occupant OP are to be protected. In the occupant protection device 10B, a case 12 as a storage portion for an airbag 70 is disposed on the rear surface 2bb side of the lower portion 2b of the instrument panel 2 as a vehicle body side portion in front of the leg L of the seated occupant OP. . Further, the airbag 70 projects rearward from the case 12 as a storage portion when inflated, and inflates so as to receive the knees K of the occupant OP moving forward. is disposed along the rear surface 2bb side of the lower portion 2b of the instrument panel 2 as a vehicle body side portion and is supported by the rear surface 2bb side of the lower portion 2b of the instrument panel 2, and the second expansion portion 74 at the completion of expansion is arranged. , extends rearward from the vicinity of the upper end 72a of the first inflation portion 72, and the vicinity of the rear end 74b is disposed as a receiving portion for receiving the knee K of the occupant OP moving forward.

すなわち、このエアバッグ７０は、膨張完了時の形状として、収納部位としてのケース１２から、車体側部位としてのインパネ下部２ｂの後面２ｂｂに沿うように略柱状として上方に延びて、車体側部位としてのインパネ下部２ｂの後面２ｂｂに支持される第１膨張部７２と、第１膨張部７２の上下方向の端部（上端）７２ａから、乗員ＯＰの保護対象部位Ｋ側の後方側に、略柱状に延びる第２膨張部７４と、第２膨張部７４の後端７４ｂから略柱状に延びて、第１膨張部７２の上下方向の他方の端部（下端）７２ｂと交差する第３膨張部７６と、を、中空部３２を囲むように配置させた略三角環状としている。そして、エアバッグ７０は、膨張完了時、第２膨張部７４の後端７４ｂ付近を、最後端に配置させて、前方移動する乗員ＯＰの保護対象部位としての膝部Ｋの受止部位とするとともに、第２膨張部７４の後端７４ｂ付近での乗員ＯＰの膝部Ｋの受止時に、第２膨張部７４を、膨張完了形状の略柱状の軸方向ＬＸに沿って後端７４ｂ側を前端７４ａ側に接近させるような圧縮変形可能に、第２膨張部７４の後端７４ｂ付近を、上下動を規制するように、第３膨張部７６の上端７６ａに連結支持させ、かつ、車体側部位としてのインパネ下部２ｂの後面２ｂｂからの反力を確保可能に、第２膨張部７４の前端７４ａ付近を、インパネ下部２ｂの後面２ｂｂに当接させるように、第１膨張部７２の上端７２ａと連結させている。略柱状に膨張する各膨張部７２，７４，７６は、断面を、左右両縁を丸くした略長方形状としている（図１３参照）。 That is, the airbag 70 extends upward in a substantially columnar shape along the rear surface 2bb of the instrument panel lower portion 2b as the vehicle body side portion from the case 12 as the storage portion as a shape at the time of completion of inflation. a first expansion portion 72 supported on the rear surface 2bb of the instrument panel lower portion 2b; and a third inflatable portion 76 that extends in a substantially columnar shape from the rear end 74b of the second inflatable portion 74 and intersects the other end (lower end) 72b of the first inflatable portion 72 in the vertical direction. and are arranged to surround the hollow portion 32 and form a substantially triangular ring. When the airbag 70 is fully inflated, the vicinity of the rear end 74b of the second inflatable portion 74 is arranged at the rearmost end to receive the knee K as a protected portion of the occupant OP moving forward. In addition, when the knee K of the occupant OP is received near the rear end 74b of the second inflation portion 74, the second inflation portion 74 is moved along the substantially columnar axial direction LX of the inflation completion shape toward the rear end 74b side. The vicinity of the rear end 74b of the second expansion portion 74 is connected to and supported by the upper end 76a of the third expansion portion 76 so as to restrict vertical movement so as to be compressively deformable so as to approach the front end 74a side, and the vehicle body side. The upper end 72a of the first expansion portion 72 is arranged so that the vicinity of the front end 74a of the second expansion portion 74 is brought into contact with the rear surface 2bb of the lower instrument panel 2b so that the reaction force from the rear surface 2bb of the lower instrument panel 2b can be secured. is connected with Each expansion part 72, 74, 76 that expands in a substantially columnar shape has a substantially rectangular cross-section with both left and right edges rounded (see FIG. 13).

なお、このエアバッグ７０でも、第２膨張部７４が、膨張完了時の前端７４ａから後端７４ｂに延びる方向を、乗員保護装置１０Ｂの作動時に前方移動する乗員ＯＰの保護対象部位としての膝部Ｋの移動方向ＫＭに対して対向する方向に沿う方向とするように、配設されている。 In this airbag 70 as well, the second inflation portion 74 extends from the front end 74a to the rear end 74b when the inflation is completed. It is arranged so as to be in the direction opposite to the movement direction KM of K. As shown in FIG.

また、各膨張部７２，７４，７６の内周壁側と外周壁側とを連結する連結片３８，３９，４０が配設されるとともに、エアバッグ７０の略三角環状とする膨張完了形状を安定させるように、第２膨張部７４と第３膨張部７６との拡開を規制するために、すなわち、第２膨張部７４と第３膨張部７６との相互の離隔方向への移動を規制するために、第２膨張部７４と第３膨張部７６とを連結する上下テザー４４Ｂが配設されている。 In addition, connecting pieces 38, 39, 40 are provided to connect the inner peripheral wall side and the outer peripheral wall side of each of the inflatable portions 72, 74, 76, and the substantially triangular annular shape of the airbag 70 after completion of inflation is stabilized. In order to restrict the expansion of the second inflatable portion 74 and the third inflatable portion 76, that is, to restrict the movement of the second inflatable portion 74 and the third inflatable portion 76 in the separation direction from each other. Therefore, the upper and lower tethers 44B connecting the second expansion portion 74 and the third expansion portion 76 are provided.

この第３実施形態の乗員保護装置１０Ｂでは、エアバッグ７０が膨張を完了させれば、第２膨張部７４の後端７４ｂ付近を、乗員ＯＰの膝部Ｋの受止部位としており、乗員ＯＰが前方移動してくれば、乗員ＯＰの保護対象部位としての膝部Ｋが、受止部位としての第２膨張部７４の後端７４ｂ付近に受け止められる。その際、第２膨張部７４が、膨張完了形状の略柱状の軸方向ＬＸに沿って後端７４ｂ側を前端７４ａ側に接近させるような圧縮変形するように、第２膨張部７４の後端７４ｂ付近を、上下動を規制するように、第３膨張部７６に支持させ、かつ、車体側部位としてのインパネ下部２ｂからの反力を確保可能に、第２膨張部７４の前端７４ａ付近を、インパネ下部２ｂの後面２ｂｂに当接させるように、第１膨張部７２と連結させている。そのため、第２膨張部７４は、座屈変形するような状態、すなわち、膨張完了形状の略柱状の軸方向ＬＸに沿って、後端７４ｂ側を前端７４ａ側に接近させるような圧縮変形状態（第２膨張部７４が前後方向の長さ寸法を圧縮されるような状態）として、乗員ＯＰの保護対象部位としての膝部Ｋを受け止める挙動となる。以上のように、膨張を完了させたエアバッグ７０は、曲げ変形でなく、高い反力を確保できる第２膨張部７４の座屈変形のような圧縮変形を伴なって、変形することから、安定して、所定以上の反力を確保して、乗員ＯＰの保護対象部位としての膝部Ｋを受け止めることができる。勿論、エアバッグ７０は、中空部３２を配設させていることから、外形形状の全域を膨張部位とする場合に比べて、膨張用ガスＧを流入させる容量は少なく、迅速に膨張を完了させることができる。 In the occupant protection device 10B of the third embodiment, when the airbag 70 completes inflation, the vicinity of the rear end 74b of the second inflation portion 74 serves as a receiving portion for the knee K of the occupant OP. moves forward, the knee K as a protected part of the occupant OP is received near the rear end 74b of the second inflatable portion 74 as a receiving part. At this time, the rear end of the second expansion portion 74 is compressed and deformed such that the rear end 74b side approaches the front end 74a side along the axial direction LX of the substantially columnar shape of the expansion completion shape. The vicinity of the front end 74a of the second inflatable portion 74 is supported by the third inflatable portion 76 so as to restrict vertical movement, and the reaction force from the lower portion 2b of the instrument panel as a vehicle body side portion can be secured. , is connected to the first expansion portion 72 so as to abut on the rear surface 2bb of the instrument panel lower portion 2b. Therefore, the second expansion portion 74 is in a state of buckling deformation, that is, a state of compression deformation in which the rear end 74b side approaches the front end 74a side along the axial direction LX of the substantially columnar shape of the expansion completed shape ( In such a state that the second expansion portion 74 is compressed in the length dimension in the front-rear direction, the knee portion K of the occupant OP, which is a portion to be protected, is received. As described above, the fully inflated airbag 70 is deformed not by bending deformation but by compressive deformation such as buckling deformation of the second inflatable portion 74 capable of ensuring a high reaction force. It is possible to stably receive a reaction force greater than or equal to a predetermined level, and receive the knees K as the parts to be protected of the occupant OP. Of course, since the airbag 70 is provided with the hollow portion 32, compared with the case where the entire area of the outer shape is used as the inflatable portion, the volume of the inflating gas G flowing therein is small, and the inflation can be completed quickly. be able to.

したがって、第３実施形態の乗員保護装置１０Ｂでも、エアバッグ７０が、迅速に膨張を完了させることができ、かつ、乗員ＯＰの受止時に安定した反力を確保することができる。 Therefore, in the occupant protection system 10B of the third embodiment as well, the airbag 70 can quickly complete inflation, and a stable reaction force can be secured when the occupant OP is received.

また、第３実施形態の乗員保護装置１０Ｂでは、エアバッグ７０の第１膨張部７２における下端７２ｂ側に、収納部位としてのケース１２を、配設したが、エアバッグ７０の第１膨張部７２における上端７２ａ側に、収納部位としてのケース１２を、配設するように構成してもよい。 In addition, in the occupant protection device 10B of the third embodiment, the case 12 as a storage portion is disposed on the side of the lower end 72b of the first inflation portion 72 of the airbag 70. The case 12 as a storage portion may be arranged on the upper end 72a side of the .

なお、各実施形態では、エアバッグ２０，６０，７０が、第２膨張部２５，６４，７４を、第１膨張部２７，６２，７２の上端２７ａ，６２ａ，７２ａ側から後方に延ばすように配設させて、第２膨張部２５，６４，７４の後端２５ｂ，６４ｂ，７６ｂを、第３膨張部２９，６６，７６の上端２９ａ，６６ａ，７６ａと連結させ、第３膨張部２９，６６，７６の下端２９ｂ，６６ｂ，７６ｂを第１膨張部２７，６２，７２の下端２７ｂ，６２ｂ，７２ｂと連結させた場合を示した。しかし、図１４に示す第４実施形態の乗員保護装置１０Ｃのエアバッグ８０のように、膨張完了時の形状として、シート４Ａの後面４ａｂに支持されるようにケース１２から略柱状に延びる第１膨張部８２の下端８２ｂと連結される前端８４ａから、後方へ、略柱状に延びるように第２膨張部８４を配設し、略柱状に延びる第３膨張部８６が、下端８６ｂを第２膨張部８４の後端８４ｂに連結させ、上端８６ａを第１膨張部８２の上端８２ａと連結させるように、中空部３２Ｃを設けた略三角環状としてもよい。第２膨張部８４の後端８４ｂは、乗員ＢＰの膝部Ｋを保護対象部位として、前方移動する膝部Ｋを受け止めるように、配設されている。また、中空部３２Ｃには、エアバッグ８０の略三角環状の膨張完了形状を安定させるように、すなわち、第２膨張部８４と第３膨張部８６との相互の離隔方向への移動を規制できるように、第２膨張部８４と第３膨張部８６とを連結する上下テザー４４Ｃが配設されている。 In each embodiment, the airbags 20, 60, 70 are configured so that the second inflation portions 25, 64, 74 extend rearward from the upper ends 27a, 62a, 72a of the first inflation portions 27, 62, 72. rear ends 25b, 64b, and 76b of the second expansion portions 25, 64, and 74 are connected to upper ends 29a, 66a, and 76a of the third expansion portions 29, 66, and 76; The lower ends 29b, 66b, 76b of 66, 76 are connected to the lower ends 27b, 62b, 72b of the first expansion portions 27, 62, 72. FIG. However, like the airbag 80 of the occupant protection system 10C of the fourth embodiment shown in FIG. 14, the shape at the time of completion of inflation is the first airbag extending in a substantially columnar shape from the case 12 so as to be supported by the rear surface 4ab of the seat 4A. A second inflatable portion 84 is arranged to extend rearward in a substantially columnar shape from a front end 84a connected to a lower end 82b of the inflatable portion 82, and a third inflatable portion 86 extending in a substantially columnar shape extends the lower end 86b to the second inflatable portion. A hollow portion 32</b>C may be provided to connect the rear end 84 b of the portion 84 and the upper end 86 a to the upper end 82 a of the first inflatable portion 82 . The rear end 84b of the second inflatable portion 84 is arranged to receive the knee K of the occupant BP that is moving forward, with the knee K of the occupant BP as a protection target portion. Further, in the hollow portion 32C, the movement of the second inflation portion 84 and the third inflation portion 86 in the separation direction can be restricted so as to stabilize the substantially triangular ring-shaped inflation completion shape of the airbag 80. As shown, the upper and lower tethers 44C connecting the second expansion portion 84 and the third expansion portion 86 are provided.

１…車両、２…（インストルメントパネル・車体側部位）インパネ、２ａ…上面、２ｂ…（車体側部位）インパネ下部、３…ウインドシールド、４Ａ…シート、４ｂｂ…（シートの）後面、１０，１０Ａ，１０Ｂ，１０Ｃ…乗員保護装置、１２…（収納部位）ケース、２０…エアバッグ、２５…（第２膨張部）上側膨張部、２５ａ…前端部位、２５ｂ…後端部位、２７…（第１膨張部）下側膨張部、２７ａ…前端部位、２７ｂ…後端部位、２９…（第３膨張部）後側膨張部、２９ａ…上端部位、２９ｂ…下端部位、３２，３２Ａ，３２Ｂ，３２Ｃ…中空部、４２…前後テザー、４４，４４Ａ，４４Ｂ，４４Ｃ…上下テザー、４８…上外側テザー、
６０，７０，８０…エアバッグ、６２，７２，８２…第１膨張部、６２ａ，７２ａ，８２ａ…上端、６２ｂ，７２ｂ，８２ｂ…下端、６４，７４，８４…第２膨張部、６４ａ，７４ａ，８４ａ…前端、６４ｂ，７４ｂ，８４ｂ…後端、６６，７６，８６…第３膨張部、６６ａ，７６ａ，８６ａ…上端、６６ｂ，７６ｂ，８６ｂ…下端、
ＬＵ…（上側膨張部の）長さ寸法、ＬＤ…（下側膨張部の）長さ寸法、ＬＢ…（後側膨張部の）長さ寸法、ＬＸ…（上側膨張部の）軸方向、ＨＭ…（乗員頭部の）移動方向、ＫＭ…（乗員膝部の）移動方向、Ｇ…膨張用ガス、
ＯＰ，ＢＰ…乗員、Ｈ…頭部、Ｌ…下肢、Ｋ…膝部。 DESCRIPTION OF SYMBOLS 1... vehicle, 2... (instrument panel/vehicle side part) instrument panel, 2a... upper surface, 2b... (vehicle side part) lower part of instrument panel, 3... windshield, 4A... seat, 4bb... rear surface (of seat), 10, 10A, 10B, 10C... occupant protection device 12... (housing part) case 20... airbag 25... (second expansion part) upper expansion part 25a... front end part 25b... rear end part 27... (second 1 expansion part) Lower expansion part 27a Front end part 27b Rear end part 29 (Third expansion part) Rear expansion part 29a Upper end part 29b Lower end part 32, 32A, 32B, 32C ... Hollow part 42 ... Front and rear tethers 44, 44A, 44B, 44C ... Upper and lower tethers 48 ... Upper and outer tethers,
60, 70, 80 Airbags 62, 72, 82 First inflatable portion 62a, 72a, 82a Upper end 62b, 72b, 82b Lower end 64, 74, 84 Second inflatable portion 64a, 74a , 84a... front end 64b, 74b, 84b... rear end 66, 76, 86... third expansion portion 66a, 76a, 86a... upper end 66b, 76b, 86b... lower end,
LU...Length dimension (of the upper expansion part) LD...Length dimension (of the lower expansion part) LB...Length dimension (of the rear expansion part) LX...Axial direction (of the upper expansion part) HM ...moving direction (of the occupant's head), KM...moving direction (of the occupant's knee), G...inflating gas,
OP, BP... occupant, H... head, L... lower leg, K... knee.

Claims (8)

着座した乗員の前方側の車体側部位としての前席の後面側に配設された収納部位に収納され、膨張用ガスの流入時、前記収納部位から後方へ突出し、前方移動する乗員を受止可能に膨張するとともに、膨張部位の中央付近に、膨張用ガスを流入させない中空部を配設させたループ状のエアバッグを備えた乗員保護装置であって、
前記エアバッグが、膨張完了時の形状として、
前記収納部位から、前記車体側部位に沿うように略柱状に延びて、前記車体側部位に支持される第１膨張部と、該第１膨張部の上下方向の端部から、乗員の保護対象部位側の後方側に、略柱状に延びる第２膨張部と、該第２膨張部の後端から略柱状に延びて、前記第１膨張部の上下方向の他方の端部と交差する第３膨張部と、を、前記中空部を囲むように配置させた略三角環状とし、
前記エアバッグが、膨張完了時、
前記第１膨張部が、前記車体側部位としての前記前席の後面側に沿い、かつ、前記前席の後面側に支持されるように配設され、
前記第２膨張部の後端付近を、最後端に配置させて、前方移動する乗員の保護対象部位の受止部位とするとともに、
前記第２膨張部の後端付近での乗員の保護対象部位の受止時に、
前記第２膨張部を、膨張完了形状の略柱状の軸方向に沿って後端側を前端側に接近させるような圧縮変形可能に、
前記第２膨張部の後端付近を、前記第３膨張部に支持させ、かつ、前記車体側部位からの反力を確保可能に、前記第２膨張部の前端付近を、前記第１膨張部と連結させ、
前記第２膨張部が、前記第１膨張部の上端付近から後方へ延び、後端付近を、前方移動する乗員の頭部を受け止める受止部位として配設されていることを特徴とする乗員保護装置。 It is housed in a storage portion disposed on the rear side of the front seat as a vehicle body side portion in front of the seated occupant, and when inflation gas flows in, it projects rearward from the storage portion to prevent the occupant moving forward. An occupant protection device comprising a loop-shaped airbag that inflates to a receiving degree and has a hollow portion that does not allow inflation gas to flow in the vicinity of the center of the inflated portion, the airbag comprising:
The shape of the airbag when inflation is completed is as follows:
A first inflatable portion extending in a substantially columnar shape along the vehicle body side portion from the storage portion and supported by the vehicle body side portion; A second inflatable portion extending in a substantially columnar shape rearward of the part side, and a third inflatable portion extending in a substantially columnar shape from the rear end of the second inflatable portion and intersecting the other end in the vertical direction of the first inflatable portion. and an inflatable portion having a substantially triangular ring shape surrounding the hollow portion,
When the airbag completes inflation,
the first expansion portion is disposed along the rear surface side of the front seat as the vehicle body side portion and supported by the rear surface side of the front seat;
The vicinity of the rear end of the second inflatable portion is arranged at the rearmost end and serves as a receiving portion for a portion to be protected of the occupant moving forward,
When receiving the part to be protected of the occupant in the vicinity of the rear end of the second expansion part,
The second expansion portion is compressively deformable such that the rear end side approaches the front end side along the axial direction of the substantially columnar shape in the completed expansion shape,
The vicinity of the rear end of the second expansion portion is supported by the third expansion portion, and the vicinity of the front end of the second expansion portion is supported by the first expansion portion so as to ensure a reaction force from the vehicle body side portion. concatenate with
The occupant protection according to claim 1, wherein the second inflatable portion extends rearward from the vicinity of the upper end of the first inflatable portion, and the vicinity of the rear end thereof is disposed as a receiving portion for receiving the head of the occupant moving forward. Device. 着座した乗員の下肢の前方側における車体側部位の後面側に配設された収納部位に収納され、膨張用ガスの流入時、前記収納部位から後方へ突出し、前方移動する乗員を受止可能に膨張するとともに、膨張部位の中央付近に、膨張用ガスを流入させない中空部を配設させたループ状のエアバッグを備えた乗員保護装置であって、
前記エアバッグが、膨張完了時の形状として、
前記収納部位から、前記車体側部位に沿うように略柱状に延びて、前記車体側部位に支持される第１膨張部と、該第１膨張部の上下方向の端部から、乗員の保護対象部位側の後方側に、略柱状に延びる第２膨張部と、該第２膨張部の後端から略柱状に延びて、前記第１膨張部の上下方向の他方の端部と交差する第３膨張部と、を、前記中空部を囲むように配置させた略三角環状とし、
前記エアバッグが、膨張完了時、
前記第１膨張部が、前記車体側部位の後面側に沿い、かつ、前記車体側部位の後面側に支持されるように配設され、
前記第２膨張部の後端付近を、最後端に配置させて、前方移動する乗員の保護対象部位の受止部位とするとともに、
前記第２膨張部の後端付近での乗員の保護対象部位の受止時に、
前記第２膨張部を、膨張完了形状の略柱状の軸方向に沿って後端側を前端側に接近させるような圧縮変形可能に、
前記第２膨張部の後端付近を、前記第３膨張部に支持させ、かつ、前記車体側部位からの反力を確保可能に、前記第２膨張部の前端付近を、前記第１膨張部と連結させ、
前記第２膨張部が、前記第１膨張部の上端付近から後方へ延び、後端付近を、前方移動する乗員の膝部を受け止める受止部位として配設されていることを特徴とする乗員保護装置。 It is housed in a storage portion disposed on the rear side of the vehicle body side portion in front of the legs of a seated occupant, and projects rearward from the storage portion to receive the occupant moving forward when inflation gas flows in. An occupant protection device comprising a loop-shaped airbag which is inflatable and has a hollow portion near the center of the inflated portion that does not allow inflow of inflation gas,
The shape of the airbag when inflation is completed is as follows:
A first inflatable portion extending in a substantially columnar shape along the vehicle body side portion from the storage portion and supported by the vehicle body side portion; A second inflatable portion extending in a substantially columnar shape rearward of the part side, and a third inflatable portion extending in a substantially columnar shape from the rear end of the second inflatable portion and intersecting the other end in the vertical direction of the first inflatable portion. and an inflatable portion having a substantially triangular ring shape surrounding the hollow portion,
When the airbag completes inflation,
the first expansion portion is disposed along the rear surface side of the vehicle body side portion and supported by the rear surface side of the vehicle body side portion;
The vicinity of the rear end of the second inflatable portion is arranged at the rearmost end and serves as a receiving portion for a portion to be protected of the occupant moving forward,
When receiving the part to be protected of the occupant in the vicinity of the rear end of the second expansion part,
The second expansion portion is compressively deformable such that the rear end side approaches the front end side along the axial direction of the substantially columnar shape in the completed expansion shape,
The vicinity of the rear end of the second expansion portion is supported by the third expansion portion, and the vicinity of the front end of the second expansion portion is supported by the first expansion portion so as to ensure a reaction force from the vehicle body side portion. concatenate with
The occupant protection according to claim 1, wherein the second inflatable portion extends rearward from the vicinity of the upper end of the first inflatable portion, and the vicinity of the rear end of the second inflatable portion is disposed as a receiving portion for receiving the knees of the occupant moving forward. Device. 前記エアバッグの前記第２膨張部が、膨張完了時の前端から後端に延びる方向を、前記乗員保護装置の作動時に前方移動する乗員の保護対象部位の移動方向に対して対向する方向に沿う方向とするように、配設されていることを特徴とする請求項１又は２に記載の乗員保護装置。 The direction in which the second inflatable portion of the airbag extends from the front end to the rear end when the inflation is completed is along the direction opposite to the moving direction of the part to be protected of the occupant moving forward when the occupant protection device is operated. 3. An occupant protection device according to claim 1 or 2 , characterized in that it is arranged so as to be oriented. 前記エアバッグが、膨張完了時の前記第２膨張部と前記第３膨張部との相互を連結して、前記第２膨張部と前記第３膨張部との相互の離隔方向への移動を規制する上下テザー、を配設させていることを特徴とする請求項１乃至３のいずれか１項に記載の乗員保護装置。 The airbag connects the second inflation portion and the third inflation portion to each other when inflation is completed, and restricts movement of the second inflation portion and the third inflation portion in a separation direction from each other. 4. The occupant protection system according to any one of claims 1 to 3 , wherein upper and lower tethers are provided to support the occupant. 着座した乗員の前方側の車体側部位としてのインストルメントパネルの上面側に配設された収納部位に収納され、膨張用ガスの流入時、前記インストルメントパネルと前記インストルメントパネルの上方のウインドシールドとの間を塞ぐように前記収納部位から後方へ突出し、前方移動する乗員を受止可能に膨張するとともに、膨張部位の中央付近に、膨張用ガスを流入させない中空部を配設させたループ状のエアバッグを備えた乗員保護装置であって、
前記エアバッグが、膨張完了時の形状として、
前記収納部位から、前記車体側部位に沿うように略柱状に延びて、前記車体側部位に支持される第１膨張部と、該第１膨張部の上下方向の端部から、乗員の保護対象部位側の後方側に、略柱状に延びる第２膨張部と、該第２膨張部の後端から略柱状に延びて、前記第１膨張部の上下方向の他方の端部と交差する第３膨張部と、を、前記中空部を囲むように配置させた略三角環状とし、
前記エアバッグが、膨張完了時、
前記第１膨張部が、前記車体側部位としての前記インストルメントパネルの上面に沿い、かつ、前記インストルメントパネルに支持されるように、前記収納部位から後下方に延びて配設され、
前記第２膨張部の後端付近を、最後端に配置させて、前方移動する乗員の保護対象部位の受止部位とするとともに、
前記第２膨張部の後端付近での乗員の保護対象部位の受止時に、
前記第２膨張部を、膨張完了形状の略柱状の軸方向に沿って後端側を前端側に接近させるような圧縮変形可能に、
前記第２膨張部の後端付近を、前記第３膨張部に支持させ、かつ、前記車体側部位からの反力を確保可能に、前記第２膨張部の前端付近を、前記第１膨張部と連結させ、
前記第２膨張部が、前記第１膨張部の前端付近から斜め上後方へ延び、後端付近を、前方移動する乗員の頭部を受け止める受止部位として配設され、
前記エアバッグが、膨張完了時の前記第２膨張部の上面側と前記収納部位側とを連結して、前記第２膨張部の前記ウインドシールドから離隔する下方移動を規制する上外側テザーを配設させていることを特徴とする乗員保護装置。 It is housed in a storage portion disposed on the upper surface side of the instrument panel as a vehicle body side portion in front of the seated occupant, and when the inflation gas flows in, the instrument panel and the upper part of the instrument panel. It protrudes rearward from the storage part so as to block the space between it and the windshield, and inflates so as to receive the occupant moving forward. An occupant protection device comprising a loop-shaped airbag,
The shape of the airbag when inflation is completed is as follows:
A first inflatable portion extending in a substantially columnar shape along the vehicle body side portion from the storage portion and supported by the vehicle body side portion; A second inflatable portion extending in a substantially columnar shape rearward of the part side, and a third inflatable portion extending in a substantially columnar shape from the rear end of the second inflatable portion and intersecting the other end in the vertical direction of the first inflatable portion. and an inflatable portion having a substantially triangular ring shape surrounding the hollow portion,
When the airbag completes inflation,
the first inflatable portion is arranged along the upper surface of the instrument panel as the vehicle body side portion and extends rearward and downward from the storage portion so as to be supported by the instrument panel;
The vicinity of the rear end of the second inflatable portion is arranged at the rearmost end and serves as a receiving portion for a portion to be protected of an occupant moving forward,
When receiving the part to be protected of the occupant in the vicinity of the rear end of the second expansion part,
The second expansion portion is compressively deformable such that the rear end side approaches the front end side along the axial direction of the substantially columnar shape of the completed expansion shape,
The vicinity of the rear end of the second expansion portion is supported by the third expansion portion, and the vicinity of the front end of the second expansion portion is supported by the first expansion portion so as to ensure a reaction force from the vehicle body side portion. concatenate with
the second inflatable portion extends obliquely upward and rearward from the vicinity of the front end of the first inflatable portion, and the vicinity of the rear end of the second inflatable portion is disposed as a receiving portion for receiving the head of an occupant moving forward;
The airbag is provided with an upper outer tether that connects the upper surface side of the second inflatable portion and the storage portion side when the airbag is fully inflated, and restricts the downward movement of the second inflatable portion away from the windshield. An occupant protection device characterized by being installed . 前記エアバッグが、車両搭載状態での膨張完了時、
前記収納部位から突出した状態での前記第２膨張部における前記第１膨張部と交差する前端部位から前記第３膨張部と交差する後端部位までの前後方向の長さ寸法を、
前記第１膨張部における前記第２膨張部と交差する部位から前記第３膨張部と交差する部位までの長さ寸法と、前記第３膨張部における前記第２膨張部と交差する上端部位から前記第１膨張部と交差する下端部位までの長さ寸法と、の合計より短く、かつ、
前記第１膨張部における前記第２膨張部と交差する部位から前記第３膨張部と交差する部位までの長さ寸法より、長くする構成としていることを特徴とする請求項５に記載の乗員保護装置。 When the airbag is fully inflated in a vehicle-mounted state,
The length dimension in the front-rear direction from the front end portion of the second expansion portion intersecting the first expansion portion to the rear end portion intersecting the third expansion portion in the state of protruding from the housing portion is
a length dimension from a portion of the first expansion portion that intersects with the second expansion portion to a portion that intersects with the third expansion portion; shorter than the sum of the length dimension up to the lower end portion that intersects with the first expansion portion, and
6. The occupant protection according to claim 5 , wherein the length from the portion of the first expansion portion that intersects with the second expansion portion to the portion that intersects with the third expansion portion is longer than the length dimension. Device. 前記エアバッグが、膨張完了時の前記第３膨張部と前記収納部位側とを連結して、前記第３膨張部の前記収納部位から離隔する後方移動を規制可能な前後テザー、を配設させていることを特徴とする請求項５又は６に記載の乗員保護装置。 A front-rear tether is provided that connects the third inflatable portion and the storage portion when the airbag is fully inflated, and is capable of restricting rearward movement of the third inflatable portion away from the storage portion. The occupant protection device according to claim 5 or 6 , wherein 前記エアバッグが、膨張完了時の前記第２膨張部と前記第１膨張部との相互を連結して、前記第２膨張部と前記第１膨張部との相互の離隔方向への移動を規制する上下テザー、を配設させていることを特徴とする請求項５乃至７のいずれか１項に記載の乗員保護装置。 The airbag connects the second inflatable portion and the first inflatable portion to each other when inflation is completed, and restricts movement of the second inflatable portion and the first inflatable portion in a direction separating from each other. 8. The occupant protection system according to any one of claims 5 to 7 , wherein upper and lower tethers are provided to support the occupant.
JP2019174682A 2018-10-19 2019-09-25 passenger protection device Active JP7215385B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/655,761 US20200122678A1 (en) 2018-10-19 2019-10-17 Occupant protection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019060029 2019-03-27
JP2019060029 2019-03-27

Publications (2)

Publication Number Publication Date
JP2020164143A JP2020164143A (en) 2020-10-08
JP7215385B2 true JP7215385B2 (en) 2023-01-31

Family

ID=72717105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019174682A Active JP7215385B2 (en) 2018-10-19 2019-09-25 passenger protection device

Country Status (1)

Country Link
JP (1) JP7215385B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7314920B2 (en) * 2020-11-30 2023-07-26 豊田合成株式会社 passenger protection device
JP7456361B2 (en) * 2020-12-01 2024-03-27 豊田合成株式会社 Airbag
US11685328B2 (en) * 2021-04-29 2023-06-27 Ford Global Technologies, Llc Airbag having multiple inflation chambers supported on a dash

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004330959A (en) 2003-05-09 2004-11-25 Takata Corp Occupant leg safety device
JP2008001198A (en) 2006-06-21 2008-01-10 Toyoda Gosei Co Ltd Air bag for front passenger seat
JP2013035437A (en) 2011-08-09 2013-02-21 Nippon Plast Co Ltd Airbag device
JP2013119330A (en) 2011-12-08 2013-06-17 Toyota Motor East Japan Inc Airbag apparatus
JP2017132325A (en) 2016-01-26 2017-08-03 豊田合成株式会社 Airbag for front passenger seat
JP2018001939A (en) 2016-06-30 2018-01-11 豊田合成株式会社 Air bag device
WO2018168355A1 (en) 2017-03-15 2018-09-20 マツダ株式会社 Air bag device
JP2019137109A (en) 2018-02-06 2019-08-22 マツダ株式会社 Rear seat airbag device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004330959A (en) 2003-05-09 2004-11-25 Takata Corp Occupant leg safety device
JP2008001198A (en) 2006-06-21 2008-01-10 Toyoda Gosei Co Ltd Air bag for front passenger seat
JP2013035437A (en) 2011-08-09 2013-02-21 Nippon Plast Co Ltd Airbag device
JP2013119330A (en) 2011-12-08 2013-06-17 Toyota Motor East Japan Inc Airbag apparatus
JP2017132325A (en) 2016-01-26 2017-08-03 豊田合成株式会社 Airbag for front passenger seat
JP2018001939A (en) 2016-06-30 2018-01-11 豊田合成株式会社 Air bag device
WO2018168355A1 (en) 2017-03-15 2018-09-20 マツダ株式会社 Air bag device
JP2019137109A (en) 2018-02-06 2019-08-22 マツダ株式会社 Rear seat airbag device

Also Published As

Publication number Publication date
JP2020164143A (en) 2020-10-08

Similar Documents

Publication Publication Date Title
CN108688607B (en) Vehicle side airbag device and method for manufacturing same
JP7215385B2 (en) passenger protection device
US6971664B2 (en) Passenger-side airbag apparatus
US10414371B2 (en) Airbag apparatus
JP6940627B2 (en) Crew protection device
US20200122678A1 (en) Occupant protection device
JP2007230395A (en) Airbag and airbag device
JP6729435B2 (en) Airbag device
US20040251665A1 (en) Occupant leg protection apparatus
US20190118757A1 (en) Airbag device
CN113492790A (en) Vehicle seat
JP2005096653A (en) Air bag for rear seat, and air bag device for rear seat
JP2005096654A (en) Air bag for rear seat, and air bag device for rear seat
CN115956034A (en) Occupant protection device
CN111845613B (en) Side airbag device
JP7192725B2 (en) side airbag device
CN115379969B (en) Side airbag device
EP3838689B1 (en) Side airbag device
JP2018176884A (en) Seat for vehicle mounted with side airbag device
JP2022145179A (en) Air bag device for vehicle
US8833798B2 (en) Airbag device
US20140049028A1 (en) Seat cushion airbag
JP2004148853A (en) Head part protecting airbag device
CN110871765B (en) Airbag device
US11993220B2 (en) Driverseat airbag device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210827

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220729

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220802

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220906

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20221220

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230102

R151 Written notification of patent or utility model registration

Ref document number: 7215385

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151