WO2015039444A1 - 一种具有正面保护功能的车辆侧气帘装置 - Google Patents

一种具有正面保护功能的车辆侧气帘装置 Download PDF

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Publication number
WO2015039444A1
WO2015039444A1 PCT/CN2014/076837 CN2014076837W WO2015039444A1 WO 2015039444 A1 WO2015039444 A1 WO 2015039444A1 CN 2014076837 W CN2014076837 W CN 2014076837W WO 2015039444 A1 WO2015039444 A1 WO 2015039444A1
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WIPO (PCT)
Prior art keywords
airbag
air bag
attached
protection function
curtain device
Prior art date
Application number
PCT/CN2014/076837
Other languages
English (en)
French (fr)
Inventor
汉普森大卫
格雷尔本内迪克特
王治家
朱晓光
林宝
Original Assignee
延锋百利得(上海)汽车安全系统有限公司
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.)
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Application filed by 延锋百利得(上海)汽车安全系统有限公司 filed Critical 延锋百利得(上海)汽车安全系统有限公司
Priority to US15/022,598 priority Critical patent/US9809189B2/en
Priority to DE112014004246.3T priority patent/DE112014004246T5/de
Publication of WO2015039444A1 publication Critical patent/WO2015039444A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/232Curtain-type airbags deploying mainly in a vertical direction from their top edge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/213Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • B60R21/2342Tear seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/239Inflatable members characterised by their venting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002Type of accident
    • B60R2021/0004Frontal collision
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0032Position of passenger
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0048Head
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23107Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23161Inflatable members characterised by their shape, construction or spatial configuration specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B60R2021/23308Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other the individual compartments defining the external shape of the bag
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • B60R21/2338Tethers
    • B60R2021/23386External tether means

Definitions

  • Vehicle side air curtain device with front protection function Vehicle side air curtain device with front protection function
  • the present invention relates to the field of automotive airbag technology, and more particularly to a vehicle side air curtain device having a frontal protection function.
  • the passive safety system components of the motor vehicle are mainly for the protection of the front passengers.
  • the airbags are arranged in the front row and the side airbags are arranged on the side.
  • These airbags and side airbags generally adopt the main control unit.
  • most motor vehicles currently use seat belts. Although the seat belt can restrain the occupant's torso, it is impossible to protect the rear occupant's head and neck. The head and neck of the rear passenger are often injured by excessive stretching.
  • the 2012 version of the new rear passenger damage evaluation system of the total of 18 test vehicles, only 2 vehicles are 50 km/h positive 100% rigid barrier and 64 km/h.
  • the rear occupant's head and neck get full marks. Even with some CNCAP 5 star cars, the rear occupant scored 0 points on the head and neck.
  • a vehicle side air curtain device having a front side protection function including a side air bag, characterized in that: an end surface of the airbag disposed laterally and laterally after being joined and unfolded on one side of the side airbag.
  • the airbag located outside the one end surface of the airbag is provided with an inflation port or an end surface of the airbag and the side airbag penetrates to form an air hole or an end surface of the airbag is integrated with the side airbag.
  • a diffuser film is disposed on one end surface of the airbag, and the outer contour of the shunt membrane is enclosed within the outer contour of one end surface of the airbag.
  • the airbag is provided with a hollow through hole.
  • the attached airbag is located in front of the occupant's seating area of the seat.
  • the outer contour thereof is generally a horizontally arranged cylinder, or the airbag is inflated and deployed, and the outer contour thereof is generally a sandwich-like triangular structure, or the airbag is inflated and deployed.
  • the horizontal section of the outer contour is generally wedge-shaped.
  • the outer contour of the outer contour is wedge-shaped, and the deployment direction of the airbag is forward and backward.
  • the free end of the airbag is connected to one end of a strap, and the other end of the strap is fixed to the airbag on the vehicle body to connect at least one airbag.
  • the shunt film is sewn with a plurality of sutures for tearing parallel to each other, and the outer contours of the plurality of sutures are geometrically formed, and the shunt film provided with the sutures is laminated or pleated.
  • the present invention ensures the protection of the occupant's head and neck in a side collision traffic accident when the vehicle collides, and can also provide the front and rear occupants' head and neck in a frontal collision traffic accident.
  • a shunt film can be arranged between the side airbag and the airbag to ensure that the shunt membrane will be opened after the internal pressure of the side airbag reaches a certain value, and the adaptive adjustment opening threshold is realized, and the airbag is controlled to be inflated. The moment and the speed of the inflation, adjusting the stiffness of the attached airbag, can more effectively absorb the impact energy of the occupant collision, and further reduce the damage to the occupant.
  • Figure 1 is a schematic view of the operation of the original side air curtain after inflation.
  • Fig. 2 is a schematic view showing the operation of the airbag and the side airbag provided with the orifice film in the embodiment of the present invention.
  • Fig. 3 is a schematic view showing the operation of the airbag and the side airbag which are provided with an inflation port externally in the embodiment of the present invention.
  • Fig. 4 is a schematic view showing the operation of the airbag and the side airbag provided with the air transmission hole in the embodiment of the present invention.
  • FIG. 5 is a schematic view showing the operation of the side airbag after the two airbags are disposed in the embodiment of the present invention.
  • Fig. 6 is a side elevational view showing the airbag with a drawstring in operation according to an embodiment of the present invention.
  • Fig. 7 is a top plan view showing the airbag with a drawstring in operation according to an embodiment of the present invention.
  • Fig. 8 is a side elevational view showing the use of a sandwich-shaped airbag in operation in an embodiment of the present invention.
  • FIG. 9 is a top plan view showing the use of a sandwich-shaped airbag in operation according to an embodiment of the present invention.
  • Figure 10 is a side elevational view showing the use of a wedge-shaped airbag in operation in an embodiment of the present invention.
  • FIG. 11 is a top plan view showing the use of a wedge-shaped airbag in operation according to an embodiment of the present invention.
  • Fig. 12 is a graph showing the curve of the occupant's head acceleration after a frontal collision after the vehicle side air curtain device and the original side air curtain device in the first embodiment of the present invention.
  • Fig. 13 is a graph showing the curve of the shearing force of the occupant's neck after a frontal collision after the vehicle side air curtain device and the original air curtain device in the first embodiment of the present invention.
  • Fig. 14 is a graph showing the curve of the neck force of the occupant after a frontal collision after the vehicle side air curtain device and the original air curtain device in the first embodiment of the present invention.
  • Fig. 15 is a graph showing the curve of the neck bending moment after a frontal collision after the vehicle side air curtain device and the original side air curtain device in the first embodiment of the present invention. detailed description
  • the invention provides a vehicle side air curtain device capable of frontal protection of an occupant, which is simply referred to as a "vehicle side air curtain device", and the airbag portion is mainly composed of a side airbag and an airbag, and the vehicle side air curtain device can be used with the original As with the technology, it is fixed between the side body roof 7 and the car roof interior.
  • the front and rear airbags 1 cover the length from the first row of passengers to the last row of passengers.
  • a gas generating device that inflates the side airbag 1 and the airbag 2 is fixed between the vehicle body roof 7 and the vehicle interior ceiling.
  • One or more gas generators may be provided depending on the internal pressure of the side airbag 2.
  • the main control unit of the vehicle side air curtain unit can be installed in the central passage of the vehicle body near the front passenger.
  • the main control unit also includes several sensors placed around the body to detect side or frontal collisions, ensuring that the side airbags and airbags are in time.
  • the present invention is mainly applied to one side of the side airbag 1, that is, an end surface of the airbag 2 disposed laterally and laterally after the user plane of the side airbag 1 is connected and deployed, and the airbag 2 connected to the side airbag 1 is provided with at least One, wherein the number or lateral length of the attached airbag 2 is determined by the number of occupants provided by the motor vehicle.
  • the airbag 2 located outside the one end surface of the airbag 2 may be provided with an inflation port 31, as shown in FIG. 3, so that when a collision occurs, the main control unit can control only the airbag 1 to be inflated according to the magnitude of the collision force, or The airbags 1 and the airbags 2 are simultaneously inflated from the two air passages. Or attach an end face of the air bag 2 An air inlet hole 32 is formed through the side airbag 1 . Referring to FIG. 4 , the airbag 2 and the side airbag 1 can be simultaneously inflated when a collision occurs, or the end surface of the airbag 2 and the side airbag 1 are integrated.
  • a distribution hole film 3 is disposed on one end surface of the airbag 2, and the outer contour of the distribution hole film 3 is enclosed in the outer contour of one end surface of the airbag 2, see FIG. 2, the distribution hole A plurality of sutures for tearing parallel to each other are sewn on the film 3, and outer contours of the plurality of sutures are geometrically formed, and the orifice film 3 provided with sutures is laminated or pleated.
  • the main control unit of the vehicle side air curtain device can control the speed at which the gas generator inflates the side airbag and the amount of air charged according to the magnitude of the collision force, so as to ensure that the airbag 2 is not broken or the airbag 2 is not operated, or the shunt is broken.
  • the orifice membrane 3 inflates the side airbag 1 and the orifice membrane 3 one after another.
  • the airbag 2 is provided with a hollow through hole 5, and when a through hole 5 is provided, the airbag 2 is formed in a ring shape.
  • the through hole 5 may have a cross section of a geometry such as a triangle or a circle.
  • the through hole 5 may be vertically disposed from top to bottom or horizontally from left to right, as shown in Figs. 8 and 9.
  • the attached airbag 2 is located in front of the occupant seating area of the seat 6.
  • the outer contour thereof is generally a horizontally arranged cylinder, or the airbag 2 is inflated and deployed, and the outer contour thereof is generally a sandwich-like triangular structure, or the airbag 2 is inflated.
  • the horizontal section of its outer contour is generally wedge-shaped.
  • the horizontal section of the outer contour is generally wedge-shaped.
  • the deployment direction of the airbag 2 is 45 ° to 90 ° from the front and rear of the vehicle body, and generally 45 ° or 60 ° can be used.
  • the free end of the attached airbag 2 can also be connected to one end of a drawstring 4, and the other end of the drawstring 4 is fixed to the vehicle body roof 7.
  • the end surface of the airbag 2 is integrally connected with the side airbag 1, that is, a layer of fabric is shared, and a shunting membrane 3 is disposed on one end surface of the airbag 2, when the vehicle collides,
  • the sensor around the vehicle body firstly transmits the collision force to the main control unit of the vehicle side air curtain device, and the main control unit controls the speed and time of the gas generator inflating into the side airbag according to the magnitude of the collision force, if the collision force is less than the setting.
  • the main control unit controls the gas generator to charge a certain amount of gas to the side airbag 1, and the side airbag 1 is deployed downward along the side interior of the vehicle body, but the pressure of the charged gas It does not reach the extent of breaking through the orifice film 3. If the collision force reaches the set collision force value of the attached airbag 2, the main control unit controls the gas generator to charge the side airbag 1 with a sufficient amount of gas until the suture on the orifice film is torn open, and then The airbag 2 is filled in the airbag 2 so that the airbag 2 is deployed in the lateral direction. In this example, the deployment direction of the airbag 2 is about 90° with respect to the deployment direction of the side airbag 1.
  • the split film hole 3 is equivalent to forming an adaptive vent hole, which is broken when the open pressure value is reached.
  • the main control unit can control the time point and inflation time of the air bag 2 according to the magnitude of the collision force.
  • the length and the speed of the inflation so as to adjust the rigidity of the attached airbag 2, can more effectively absorb the impact energy of the occupant collision, and further reduce the damage to the occupant.
  • the simulation of the occupant's head and neck injury is performed when the vehicle has a frontal collision, wherein the black solid line is the normal side.
  • the air curtain simulates the damage curve of the middle head and the neck
  • the black dotted line is the simulated damage curve of the head and neck in the frontal collision of the invention. From the simulation analysis of the head and neck injuries, it can be seen that the device of the present invention can effectively buffer the impact force in the collision traffic accident and provide effective protection for the head and neck of the front and rear passengers.
  • the number of the airbags 2 to which the side airbag 1 is connected can be set according to the number of seats 6 of the vehicle.
  • two airbags 2 are provided on one side of the side airbag 1, two attached
  • the airbag 2 is inflated and deployed on the front side of the front and rear occupants respectively, and the two airbags 2 are inflated and deployed in a laterally arranged cylinder, and the cylinder has an elliptical cross section.
  • the front and rear airbags 2 are also inflated, and the deployed position is located in front of the occupant's head to protect the occupant's head and neck, considering that there is a young child.
  • the passengers so the longitudinal length of the attached airbag 2 is also appropriately extended.
  • the front and rear airbags 2 not only protect the occupants in frontal collisions, but also protect the occupants in angled offset collisions, such as the IIHS 25% rigid barrier offset crash test.
  • this example is further improved on the basis of the embodiment 2, gp, in order to provide sufficient supporting force to avoid the airbag 2 away from the occupant, one for each of the front and rear airbags 2
  • the root strap 4 one end of the strap 4 is fastened to the free end of the attached airbag 2, and the other end of the strap 4 is fixed between the body roof 7 on the rear side of the corresponding occupant's head and the ceiling interior.
  • the binding force of the airbag 2 is optimized, the acceleration of the occupant's head is reduced, and the head is prevented from coming into contact with the seat 6 and/or the instrument panel to reduce neck damage.
  • the airbag 2 has a generally triangular-shaped triangular structure on the outer contour of the airbag 2, and a triangular through-hole 5 is provided in the longitudinal direction of the airbag 2 in the longitudinal direction.
  • a triangular through-hole 5 is provided in the longitudinal direction of the airbag 2 in the longitudinal direction.
  • two front and rear airbags 2 are also provided.
  • the horizontal section of the outer contour is generally wedge-shaped, and the deployment direction of the airbag 2 is about the front and rear of the vehicle body.
  • the angle between 45 ° and 90 ° is generally 45 ° or 60 °, so that the free end of the attached airbag 2 is biased toward the occupant side.
  • the unfolded shape of the airbag 2 can increase the restraining force of the occupant in the forward and backward directions of the vehicle body, reduce the forward movement of the occupant's head, and reduce the neck injury.

Abstract

一种具有正面保护功能的车辆侧气帘装置,包括侧气囊(1)和在侧气囊(1)的一侧面连接展开后呈左右向横向布置的附气囊(2),在侧气囊(1)与附气囊(2)之间设有分流孔膜(3),保证在侧气囊(1)的内部压力达到一定值之后,分流孔膜(3)才会被打开,实现自适应调整开启阀值,控制附气囊(2)充气的时刻和充气的速度,调整附气囊(2)的刚度。在车辆发生碰撞时,该装置在侧面碰撞和正面碰撞交通事故中对乘员头、颈部进行保护,可以更加有效地吸收乘员碰撞冲击能量,降低对乘员的伤害。

Description

一种具有正面保护功能的车辆侧气帘装置 技术领域
本发明涉及汽车气囊技术领域, 具体地说是一种具有正面保护功能的车 辆侧气帘装置。
背景技术
目前已有的机动车被动安全系统零部件, 主要是针对前排乘员进行保护, 除了安全带外, 包括在前排设置气囊、 在侧面设置侧气囊, 这些气囊、 侧气 囊一般都采用主控制单元来控制气体发生器点爆后对气囊和 /或侧气囊进行充 气, 并已经取得明显的效果, 挽救了数以千计的生命。 但对于后排乘员的保 护, 目前绝大多数机动车采用安全带。 安全带虽然能对乘员的躯干进行约束, 但无法对后排乘员头、 颈部进行保护。 后排乘员的头、 颈部往往由于过度的 拉伸造成伤害。
根据 2012版 CNCAP公布的碰撞测试结果,即 2012版新增后排乘员损伤 评价体系:在总共 18款测试车辆中,只有 2款车在 50 km/h正面 100%刚性壁 障和 64 km/h正面 40 %重叠可变形壁障的碰撞试验中, 后排乘员头、 颈部得 到满分。 即使有些 CNCAP 5星车, 后排乘员头颈部得分为 0分。
根据美国高速公路安全保险协会 IIHS公布的 2012年 25%刚性壁障偏置 碰撞试验测试结果, 大部分车辆在乘员约束程度的评估中达不到优秀, 其原 因为头部滑出前排驾驶员气囊。
发明内容
本发明的目的是克服现有技术的不足, 在侧气囊上设置一横向的附气囊 来对乘员头、 颈部进行有效保护。
为实现上述目的, 设计一种具有正面保护功能的车辆侧气帘装置, 包括 侧气囊, 其特征在于: 在侧气囊的一侧面连接展开后呈左右向横向布置的附 气囊的一端面。
位于附气囊的一端面之外的附气囊上设有充气口或者附气囊的一端面与 侧气囊之间贯通形成输气孔或者附气囊的一端面与侧气囊连接处为一体式, 且附气囊的一端面上设有一个分流孔膜, 所述的分流孔膜的外轮廓被围于附 气囊的一端面的外轮廓之内。
所述的附气囊上设有^)个中空的通孔。
所述的附气囊位于座椅的乘员乘坐区域前方。
所述的附气囊充气展开后其外轮廓总体呈横向布置的柱体, 或所述的附 气囊充气展开后其外轮廓总体呈三明治状的三角体结构, 或所述的附气囊充 气展开后其外轮廓的水平截面总体呈楔形。
充气展开后外轮廓总体呈楔形的附气囊的展开方向与车身前后向呈
45。 〜90。 的夹角。
所述的附气囊的自由端连接一根拉带的一端, 拉带的另一端固定在车身 侧气囊上连接至少一个附气囊。
所述的分流孔膜上缝制有若干条相互平行的撕裂用的缝线, 且若干条缝 线的外轮廓形成几何形状, 设有缝线的分流孔膜呈层叠式或褶皱式。
本发明同现有技术相比, 在车辆发生碰撞时, 保证在侧面碰撞交通事故 中对乘员头、 颈部进行保护, 而且还能在正面碰撞交通事故中对前、 后乘员 的头颈部提供保护; 同时可在侧气囊与附气囊之间设有分流孔膜, 保证在侧 气囊的内部压力达到一定值之后, 分流孔膜才会被打开, 实现自适应调整开 启阀值, 控制附气囊充气的时刻和充气的速度, 调整附气囊的刚度, 可以更 加有效地吸收乘员碰撞冲击能量, 进一歩降低对乘员的伤害。 附图说明
图 1为原有侧气帘的充气后的工作示意图。
图 2 为本发明实施例中设有分流孔膜的附气囊与侧气囊充气后的工作示 意图。
图 3 为本发明实施例中外部设有充气口的附气囊与侧气囊充气后的工作 示意图。
图 4 为本发明实施例中设有输气孔的附气囊与侧气囊充气后的工作示意 图。
图 5为本发明实施例中侧气囊设置两个附气囊后的工作示意图。
图 6为本发明实施例中采用拉带的附气囊在工作时的侧视示意图。 图 7为本发明实施例中采用拉带的附气囊在工作时的俯视示意图。
图 8为本发明实施例中采用呈三明治状的附气囊在工作时的侧视示意图。 图 9为本发明实施例中采用呈三明治状的附气囊在工作时的俯视示意图。 图 10为本发明实施例中采用呈楔形的附气囊在工作时的侧视示意图。 图 11为本发明实施例中采用呈楔形的附气囊在工作时的俯视示意图。 图 12为分别采用本发明实施例 1中车辆侧气帘装置与原侧气帘装置后, 正面碰撞后乘员头部加速度的曲线分析图。
图 13为分别采用本发明实施例 1中车辆侧气帘装置与原侧气帘装置后, 正面碰撞后乘员颈部剪切力的曲线分析图。
图 14为分别采用本发明实施例 1中车辆侧气帘装置与原侧气帘装置后, 正面碰撞后乘员颈部拉伸力的曲线分析图。
图 15为分别采用本发明实施例 1中车辆侧气帘装置与原侧气帘装置后, 正面碰撞后颈部弯矩的曲线分析图。 具体实施方式
现结合附图对本发明作进一歩地说明。
本次发明提供了一种能对乘员进行正面保护的车辆侧气帘装置, 本例中 简称 "车辆侧气帘装置" , 其气囊部分主要由侧气囊和附气囊组成, 该车辆 侧气帘装置可以与原有技术一样, 固定在侧面车身顶棚 7 和车身顶棚内饰之 间, 侧气囊 1 前后的覆盖长度从机动车第一排乘员到最后一排乘员。 对侧气 囊 1和附气囊 2进行充气的气体产生装置固定在车身顶棚 7和车身顶棚内饰 之间。 根据侧气囊 2内部压力的要求, 可设置一个或一个以上的气体发生器。 车辆侧气帘装置的主控制单元可安装在车身中央通道靠近前排乘客处。 主控 制单元还包括几个布置在车身周边的传感器, 用来检测侧面或者正面碰撞, 确保及时点爆侧气囊和附气囊。
本发明主要是在侧气囊 1 的一侧面, 也即在侧气囊 1 的用户面连接展开 后呈左右向横向布置的附气囊 2的一端面, 侧气囊 1上所连接的附气囊 2设 有至少一个, 其中附气囊 2的数量或横向长度由机动车设置的乘员数量决定。
位于附气囊 2的一端面之外的附气囊 2上可设有充气口 31, 参见图 3, 这样当发生碰撞时主控制单元可根据碰撞力的大小来控制只向侧气囊 1充气, 或是从两个气路分别向侧气囊 1、 附气囊 2同时充气。或者附气囊 2的一端面 与侧气囊 1之间贯通形成输气孔 32,参见图 4,当发生碰撞时可以向附气囊 2、 侧气囊 1 同时充气, 或者附气囊 2的一端面与侧气囊 1连接处为一体式, 且 附气囊 2的一端面上设有一个分流孔膜 3,所述的分流孔膜 3的外轮廓被围于 附气囊 2的一端面的外轮廓之内, 参见图 2, 所述的分流孔膜 3上缝制有若干 条相互平行的撕裂用的缝线, 且若干条缝线的外轮廓形成几何形状, 设有缝 线的分流孔膜 3 呈层叠式或褶皱式。 这样车辆侧气帘装置的主控制单元可根 据碰撞力的大小来控制气体发生器向侧气囊充气的速度及充入的气量, 保证 不冲破分流孔膜 3使附气囊 2不工作, 或是冲破分流孔膜 3, 使侧气囊 1与分 流孔膜 3先后充气。
所述的附气囊 2上设有^)个中空的通孔 5, 当设一个通孔 5时, 附气囊 2便形成一个圈状。所述的通孔 5的横截面可以采用三角形或圆形等几何形状, 通孔 5可由上至下纵向设置, 也可从左至右水平设置, 参见图 8和图 9。
所述的附气囊 2位于座椅 6的乘员乘坐区域前方。
所述的附气囊 2 充气展开后其外轮廓总体呈横向布置的柱体, 或者所述 的附气囊 2充气展开后其外轮廓总体呈三明治状的三角体结构, 或者所述的 附气囊 2充气展开后其外轮廓的水平截面总体呈楔形。
充气展开后外轮廓的水平截面总体呈楔形的附气囊 2 的展开方向与车身 前后向呈 45 ° 〜90° 夹角, 一般可采用 45 ° 或 60° 。所述的附气囊 2的自由 端也可连接一根拉带 4的一端, 拉带 4的另一端固定在车身顶棚 7上。
实施例 1
参见图 2, 本例中附气囊 2的一端面与侧气囊 1连接处为一体式, 也即共 用一层布料, 附气囊 2的一端面上设一个分流孔膜 3, 当车辆发生碰撞时, 车 身周围的传感器会首先将碰撞力输送给车辆侧气帘装置的主控制单元, 由主 控制单元根据碰撞力的大小来控制气体发生器向侧气囊内充气的速度与时 间, 如果碰撞力小于设定的附气囊 2打开的碰撞力值, 那么主控制单元会控 制气体发生器向侧气囊 1充入一定量的气体, 侧气囊 1会沿车身侧面内饰向 下展开, 但充入的气体的压力并不会达到冲破分流孔膜 3 的程度。 如果碰撞 力到达设定的附气囊 2打开的碰撞力值, 那么主控制单元会控制气体发生器 向侧气囊 1 充入足够量的气体, 直至使分流孔膜上的缝线撕裂开, 然后充入 附气囊 2中, 使附气囊 2沿横向展开, 本例中附气囊 2展开方向与侧气囊 1 展开方向约成 90 ° 。 这种分流膜孔 3 相当于形成了一个自适应排气孔, 当达到开启的压力值 时便会被冲破, 主控制单元可根据碰撞力的大小来控制附气囊 2 充气的时间 点、 充气时间的长短和充气的速度, 从而达到调整附气囊 2 刚度的目的, 可 以更加有效地吸收乘员碰撞冲击能量, 进一歩降低对乘员的伤害。
参见图 12〜图 15, 是采用本例中主要由侧气囊和附气囊组成的气囊后, 在车辆发生正面碰撞时, 对乘员头、 颈部伤害的仿真示意, 其中黑色实线为 普通型侧气帘在正面碰撞时中头、 颈部仿真伤害曲线, 黑色虚线为本发明在 正面碰撞时头、 颈部仿真伤害曲线。 从头、 颈部伤害的仿真分析对比中, 可 以看出采用本发明装置能有效地缓冲碰撞交通事故中的冲击力, 为前后排乘 员的头颈部提供有效保护。
实施例 2
参见图 5, 可根据车辆的座椅 6的数量来设定侧气囊 1所连接的附气囊 2 的数量, 本例中在侧气囊 1的一侧设了前后两个附气囊 2, 两个附气囊 2充气 展开后分别位于前、 后排乘员的头部前侧, 两个附气囊 2 充气展开后呈横向 布置的柱体, 该柱体的横截面呈椭圆形。 当发生正面碰撞交通事故时, 在侧 气囊 1充气就位之后, 前、 后两个附气囊 2也开始充气, 其展开位置位于乘 员头部的前方, 保护乘员头颈部, 考虑到有年幼的乘客, 所以附气囊 2 的纵 向长度也适当延长。 前后两个附气囊 2不仅在正面碰撞事故中对乘员进行保 护, 在有角度的偏置碰撞事故中仍能对乘员进行保护, 例如 IIHS 25%刚性壁 障偏置碰撞试验。
实施例 3
参见图 6和图 7, 本例在实施例 2的基础上做了进一歩的改进, gp, 为了 提供足够的支撑力以避免附气囊 2远离乘员, 在前后两个附气囊 2上分别增 设一根拉带 4, 拉带 4一端紧固在附气囊 2的自由端, 拉带 4的另一端固定在 位于相应乘员头部后侧的车身顶棚 7和顶棚内饰之间。 通过拉带 4的长度调 整优化附气囊 2的约束力, 降低乘员头部加速度, 避免头部与座椅 6和 /或仪 表板接触, 降低颈部损伤。
实施例 4
参见图 8和图 9,本例中附气囊 2在充气展开后其外轮廓总体呈三明治状 的三角体结构, 同时在该附气囊 2的中间沿纵向设有三角形的通孔 5, 当然也 可设成圆孔, 使附气囊 2 中间呈中空状, 这样在为乘员头部提供足够约束力 的同时, 还能起到一定的缓冲作用, 从而避免过大的约束力对头颈部造成二 次伤害。
实施例 5
参见图 10和图 11, 本例中也设有前后两个附气囊 2, 该附气囊 2充气展 开后, 其外轮廓的水平截面总体呈楔形, 且附气囊 2 的展开方向与车身前后 向约成 45 ° 〜90 ° 夹角,一般采用 45 ° 或 60 ° 夹角, 使该附气囊 2的自由端 偏向乘员侧。 这种附气囊 2 的展开形状可以增加车身前后向方向上对乘员的 约束力, 减少乘员头部向前的运动, 降低颈部伤害。

Claims

权 利 要 求
1. 一种具有正面保护功能的车辆侧气帘装置,包括侧气囊,其特征在于: 在侧气囊 (1) 的一侧面连接展开后呈左右向横向布置的附气囊 (2) 的一端 面。
2. 如权利要求 1所述的一种具有正面保护功能的车辆侧气帘装置, 其特 征在于: 位于附气囊 (2) 的一端面之外的附气囊 (2) 上设有充气口 (31) 或者附气囊 (2) 的一端面与侧气囊 (1) 之间贯通形成输气孔 (32) 或者附 气囊 (2) 的一端面与侧气囊 (1) 连接处为一体式, 且附气囊 (2) 的一端面 上设有一个分流孔膜(3) , 所述的分流孔膜(3) 的外轮廓被围于附气囊(2) 的一端面的外轮廓之内。
3. 如权利要求 1所述的一种具有正面保护功能的车辆侧气帘装置, 其特 征在于: 所述的附气囊 (2) 上设有^)个中空的通孔 (5) 。
4. 如权利要求 1〜3任一项所述的一种具有正面保护功能的车辆侧气帘 装置, 其特征在于: 所述的附气囊 (2) 位于座椅 (6) 的乘员乘坐区域前方。
5. 如权利要求 1〜3任一项所述的一种具有正面保护功能的车辆侧气帘 装置, 其特征在于: 所述的附气囊 (2) 充气展开后其外轮廓总体呈横向布置 的柱体, 或所述的附气囊 (2) 充气展开后其外轮廓总体呈三明治状的三角体 结构, 或所述的附气囊 (2) 充气展开后其外轮廓的水平截面总体呈楔形。
6, 如权利要求 5所述的一种具有正面保护功能的车辆侧气帘装置, 其特 征在于: 充气展开后外轮廓水平截面总体呈楔形的附气囊的展开方向与车身 前后向呈 45° 〜90° 的夹角。
Ί, 如权利要求 1〜3任一项所述的一种具有正面保护功能的车辆侧气帘 装置, 其特征在于: 所述的附气囊 (2) 的自由端连接一根拉带 (4) 的一端, 拉带 (4) 的另一端固定在车身顶棚 (7) 上。
8. 如权利要求 1〜2任一项所述的一种具有正面保护功能的车辆侧气帘 装置, 其特征在于: 侧气囊上连接至少一个附气囊 (2 ) 。
9. 如权利要求 2所述的一种具有正面保护功能的车辆侧气帘装置, 其特 征在于: 所述的分流孔膜 (3) 上缝制有若干条相互平行的撕裂用的缝线, 且 若干条缝线的外轮廓形成几何形状, 设有缝线的分流孔膜 (3) 呈层叠式或褶 皱式。
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