JP2005132295A - Air bag for preventing rolling-in, air bag device and vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-rolling-in air bag in which a pedestrian or the like is prevented from being led to an opposite lane side when the pedestrian or the like hits an air bag for protecting the pedestrian or the like, and a vehicle in which the anti-rolling-in air bag is suitably inflated corresponding to a traveling speed of the vehicle. <P>SOLUTION: The vehicle 1 is provided with an inflatable anti-rolling-in air bag 10 at a lower side of a front bumper 2, and an inflatable air bag 20 for protecting a pedestrian or the like inflates so as to cover an upper surface of a vehicle body. In the state where the anti-rolling-in air bag 10 is inflated, a front surface 12 of the air bag 10 for preventing rolling-in becomes a shape where an end 14 at the opposite lane side is projected to a front side of the vehicle and it is obliquely retreated from the end 14 toward an end 16 at a walkway side. A control device inflates the anti-rolling-in air bag 10 when the travel speed of the vehicle 1 is lower than a predetermined value and inflates the air bag 20 for protecting a pedestrian or the like when the travel speed of the vehicle 1 is higher than the predetermined value. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an airbag for protecting a pedestrian such as a pedestrian or a two-wheeled vehicle occupant at the time of a vehicle collision, and an airbag apparatus and a vehicle including the airbag. More specifically, the present invention relates to an airbag that prevents a pedestrian or the like from being caught in the lower side of a vehicle body, an airbag device including the airbag, and a vehicle.

  In order to prevent a pedestrian or the like from being caught under the vehicle body when the pedestrian or the like collides with the automobile, it is possible to provide a wind-up prevention airbag at the lower part of the front part of the automobile. In the issue. The publication also discloses that a protective airbag for a pedestrian or the like is provided on the front surface of the vehicle body to prevent a pedestrian or the like from directly colliding with the vehicle body.

Japanese Patent Laid-Open No. 6-239198 discloses that a protective airbag for a pedestrian or the like that expands in front of a vehicle body is deployed to the vicinity of the ground; the front surface of the airbag projects from the center in the vehicle width direction toward the front. In addition, it is described that the shape is like a Russell car that retreats toward both the left and right sides, and a colliding pedestrian or the like is guided to the side of the vehicle body.
JP 2001-334895 A JP-A-6-239198

  I. When a pedestrian or the like hits the right half of the vehicle body of the airbag for protecting a pedestrian or the like disclosed in Japanese Patent Laid-Open No. 6-239198, the pedestrian or the like is led to the opposite lane side, which is not preferable.

  An object of the present invention is to provide an entrainment-preventing airbag in which a pedestrian or the like is prevented from being guided to the opposite lane when the pedestrian or the like hits a protective airbag.

  II. In JP-A-2001-334895, when a pedestrian or the like collides, both the protective airbag for the pedestrian and the airbag for preventing entrainment are inflated.

  Observing the collision situation, when the running speed of the vehicle is low, pedestrians are caught under the vehicle body, but when the running speed is high, the pedestrians are thrown up above the hood and are caught under the vehicle body. It will never be. Therefore, it is not always necessary to inflate both the airbag for protecting a pedestrian or the like and the airbag for preventing entrainment as in JP-A-2001-334895. (Exchange cost) can be expensive.

  An object of the present invention is to provide a vehicle in which an entrainment-preventing airbag is appropriately inflated according to the traveling speed of the vehicle.

  The air bag for preventing entrainment according to the present invention (Claim 1) is an air bag for preventing entrainment which is inflated at the lower part of the front portion of the vehicle body and prevents the pedestrian or the like from being entrained below the vehicle body. The front surface of the bag is characterized in that the opposite lane side protrudes forward.

  In one aspect of the airbag for preventing entrainment, the front surface of the airbag when inflated is shaped to recede from the opposite lane side toward the sidewalk (Claim 2).

  In another aspect of the air bag for preventing entrainment, the front surface of the airbag when inflated is shaped to recede from the opposite lane side in the middle of the vehicle body width direction. ).

  The air bag for preventing entrainment of the present invention (Claim 4) is an air bag for preventing entrainment which is inflated at the lower part of the front portion of the vehicle body and prevents the pedestrian or the like from being entrained below the vehicle body. The front surface of the bag is characterized in that both left and right end portions protrude forward.

  In one aspect of the airbag for preventing entrainment, the front surface of the airbag when inflated is shaped to recede from the left and right ends toward the center in the vehicle body width direction (Claim 5). .

  The airbag device of the present invention includes the airbag for preventing entrainment of the present invention.

  The vehicle of the present invention (Claim 7) is provided with the entrainment-preventing airbag of the present invention.

  The vehicle of the present invention (Claim 8) is a vehicle equipped with an entrainment-preventing airbag that inflates to the lower part of the front portion of the vehicle body and prevents the pedestrian or the like from being caught under the vehicle body. A means for inflating the air bag for preventing entrainment at the time of a collision of a pedestrian or the like in a state of a predetermined speed or less is provided.

  In this aspect, the vehicle includes a protective airbag for a pedestrian or the like that inflates above the entrainment-preventing airbag at the front of the vehicle body.

  In this case, there may be provided means for inflating the pedestrian protective airbag at the time of a collision of the pedestrian or the like in a state where the traveling speed of the vehicle is higher than a preset speed (claim 10).

  In the air bag for preventing entrainment, the air bag apparatus and the vehicle according to the present invention (inventions 1, 6 and 7), since the opposite lane side is inflated so as to protrude forward, it hits the air bag for preventing entrainment. Pedestrians and the like are prevented from being guided to the oncoming lane.

  When the front surface of the entrainment-preventing airbag is in a shape of retreating from the opposite lane side toward the sidewalk when inflated (Claim 2), a pedestrian or the like hitting the airbag is guided to the sidewalk.

  When the front surface of the entrainment-preventing airbag is retreated toward the middle in the width direction from the opposite lane when inflated (Claim 3), the pedestrian who hits the retreated area is on the sidewalk Guided towards.

  In the air bag for preventing entrainment according to the present invention (Claim 4), the left and right end portions are inflated so as to protrude forward, so that a pedestrian or the like hitting the front of the vehicle body is on either side of the vehicle body. It is prevented from being guided.

  This air bag for preventing entrainment is suitable for protecting a pedestrian or the like when colliding with a pedestrian in a non-pedestrian side lane of a road having a plurality of lanes. For example, the two-wheeled vehicle when colliding with a two-wheeled vehicle Suitable for passenger protection.

  In this entrainment-preventing airbag, the front surface of the airbag when inflated is shaped to recede from the left and right ends toward the center in the vehicle body width direction (Claim 5). A pedestrian or the like hitting the airbag is guided to the center side in the vehicle body width direction.

  When the vehicle according to the present invention (Claim 8) collides with a pedestrian or the like, if the traveling speed of the vehicle is lower than a predetermined speed, the pedestrian or the like is brought down on the road by the vehicle and caught under the vehicle body. However, since the air bag for preventing entrainment is inflated, this entrainment is prevented. On the other hand, when the traveling speed of the vehicle is high to some extent, a pedestrian or the like is jumped up onto the hood by the vehicle and is not caught under the vehicle body, so that the pedestrian or the like is inflated above the entrainment-preventing airbag. It is preferable to inflate a protective airbag for a pedestrian or the like (claim 9). Further, it is preferable that the protective airbag for the pedestrian or the like is inflated when the traveling speed at the time of collision with the pedestrian or the like of the vehicle is higher than a set value.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a side view showing a vehicle equipped with an entrainment-preventing airbag according to an embodiment of the present invention when the entrainment-preventing airbag is inflated, and FIG. 1 (b) is this entrainment. It is a top view at the time of expansion | swelling of the airbag for prevention. FIG. 2 is a side view showing a state where a protective airbag for a pedestrian or the like is inflated on the hood of the vehicle.

  The vehicle 1 covers the upper surface of the vehicle body such as the upper surface of the hood 4 and the front surface of the windshield 6, and the front surface of the windshield 6. A pedestrian protective airbag device for inflating the pedestrian protective airbag 20; a collision sensor (not shown) for detecting or predicting a collision between the vehicle 1 and the pedestrian; And a physique detection device for detecting the physique (height from the road surface to the highest position) of a pedestrian or the like in which a collision with the vehicle 1 is detected or predicted. (Not shown) and the collision detection or prediction signal from the collision sensor, the travel speed detected by the travel speed detection device, and the physique of the pedestrian detected by the physique detection device. And a controller for operating individually airbag apparatus and pedestrians air bag device for protecting viewed prevention (not shown).

  As shown in FIG. 1, the air bag 10 for preventing entrainment is inflated so as to fill a space between the front bumper 2 and the road surface, so that the pedestrian is brought down on the road by the collision with the vehicle 1. And the like are prevented from getting caught under the vehicle body. The entrainment airbag 10 inflates along the lower surface of the front bumper 2 so as to extend in the vehicle body width direction (left-right direction) from the left end side to the right end side of the vehicle body.

  As shown in FIG. 1 (b), in the state in which the entrainment-preventing airbag 10 is inflated, the front surface (surface facing the traveling direction when the vehicle moves forward) 12 is on the opposite lane side. An end portion (right end portion in FIG. 1 (b)) projects forward of the vehicle, and obliquely extends from the opposite lane side end portion 14 toward the sidewalk side end portion (left end portion in FIG. 1 (b)). It is comprised so that it may become a shape retreating.

  In addition, since the lower surface of the airbag 10 for entanglement may rub against the road surface when inflated, it is manufactured from a material such as a base cloth, rubber, or synthetic resin having high wear resistance (abrasion resistance). It is preferable. Further, a reinforcing member made of a material such as a base cloth, rubber, or synthetic resin having high wear resistance may be provided on the lower surface of the air bag 10 for preventing entrainment.

  Although not shown, the entrainment-preventing airbag device includes the entrainment-preventing airbag 10, a container that accommodates the folded body of the entrainment-preventing airbag 10, and the inflating prevention airbag 10. And a gas generator. The container is disposed on the inner side or the rear side of the front bumper 2. An opening for inflating the airbag is provided on the lower surface of the container. In the normal state, the air bag 10 for preventing entrainment is disposed in the container in a folded state, and the opening for inflating the air bag on the lower surface of the container is closed by a lid (lid member).

  When an operation signal is input from the control device to the entrainment airbag device, the gas generator operates to eject gas, and the entrainment airbag 10 is inflated by the gas from the gas generator. The inflating prevention airbag 10 that has started to inflate opens a lid, inflates downward from the airbag inflating opening on the lower surface of the container, and inflates and deploys below the front bumper 2.

  In this embodiment, the pedestrian or the like protective airbag 20 covers the upper surface of the vehicle body from the vicinity of the front end portion of the hood hood 4 to the vicinity of the upper end portion of the windshield 6, as shown in FIG. This prevents a pedestrian or the like who has jumped up from falling on the upper surface of the vehicle body and directly hitting a rigid member such as the bonnet hood 4 or the windshield 6. The airbag 20 for protecting a pedestrian or the like is inflated so as to extend in the left-right direction along the upper surface of the bonnet hood 4 and the front surface of the windshield 6, and the A pillars (reference numerals) on both the left and right sides of the windshield 6. (Omitted) is also covered.

  Although not shown, the pedestrian protective airbag device also includes the pedestrian protective airbag 20, a container that accommodates the folded body of the pedestrian protective airbag 20, and the pedestrian protective airbag. A gas generator for inflating the airbag 20. The container is disposed on the back side of the hood hood 4, a cowl top (not shown) or the like between the hood hood 4 and the windshield 6. The container is provided with an opening for inflating the airbag. In normal times, the airbag 20 for protecting a pedestrian or the like is disposed in the container in a folded state, and the airbag inflation opening of the container is closed by a lid.

  When an operation signal is input from the control device to the pedestrian or the like protective airbag device, the gas generator operates to eject gas, and the pedestrian or the like protective airbag 20 is inflated by the gas from the gas generator. . The airbag 20 for protecting a pedestrian or the like that has started to expand expands on the upper surface of the vehicle body by pushing the lid open from the airbag expansion opening of the container.

  In addition, when the height of the front end of the vehicle body is high (or the height of the front end of the vehicle body is higher than the height of the center of gravity of a pedestrian or the like) as in an RV car, etc., walking regardless of the traveling speed of the vehicle. A person or the like may be caught under the vehicle body.

  In this embodiment, when the collision sensor detects or predicts a collision between the vehicle 1 and a pedestrian or the like, the control device detects that the traveling speed of the vehicle 1 detected by the traveling speed detection device is greater than a predetermined value. If it is lower, the entanglement-preventing airbag device is operated to inflate the entanglement-prevention airbag 10 between the front bumper 2 and the road surface. On the other hand, when the collision sensor detects or predicts a collision between the vehicle 1 and a pedestrian or the like, the traveling speed of the vehicle 1 detected by the traveling speed detection device is higher than a predetermined value, and the physique of the pedestrian or the like is detected. Is higher than a predetermined height, the pedestrian protective airbag device is operated to inflate the pedestrian protective airbag 20 on the upper surface of the vehicle body. Further, when the collision sensor detects or predicts a collision between the vehicle 1 and a pedestrian or the like, the traveling speed of the vehicle 1 detected by the traveling speed detection device is higher than a predetermined value, and the physique of the pedestrian or the like is detected. Is lower than a predetermined height, both the airbag device for preventing entrainment and the airbag device for protecting pedestrians and the like are operated, and the entraining airbag 10 is inflated between the front bumper 2 and the road surface. At the same time, the airbag 20 for protecting a pedestrian or the like is inflated on the upper surface of the vehicle body.

  When the air bag 10 for preventing entrainment is inflated between the front bumper 2 and the road surface, even if a pedestrian or the like falls on the road by the vehicle 1, the air bag 10 for preventing entrainment causes the pedestrian or the like to move under the vehicle body. It is prevented from being caught on the side.

  In the entanglement-preventing airbag 10, in the state in which the entanglement-prevention airbag 10 is inflated, an end 14 on the opposite lane side of the front surface 12 protrudes forward of the vehicle, and an end on the opposite lane side. Since the shape of the pedestrian is receding obliquely from the side 14 toward the end 16 on the sidewalk side, a pedestrian or the like received by the inflated air bag 10 is shown in FIG. 1 (b). It is pushed along the front surface 12 toward the sidewalk. This reliably prevents the pedestrian or the like from being guided to the opposite lane after being caught by the entrainment airbag 10.

  In the vehicle 1, when the protective airbag 20 for a pedestrian or the like is inflated so as to cover the upper surface of the hood 4 and the front surface of the windshield 6, the pedestrian or the like is jumped up onto the hood 4 by the vehicle 1. However, the pedestrian or the like is prevented from directly hitting the hood hood 4 or the windshield 6.

  In the vehicle 1, both the entrainment-preventing airbag device and the protective airbag device such as a pedestrian are not necessarily operated according to the collision situation with the pedestrian or the like. When only one of the air bag device for preventing entrainment or the air bag device for protecting a pedestrian or the like is activated when the vehicle 1 collides with the vehicle, when the vehicle 1 is repaired after the accident, the activated air device Only the bag device needs to be replaced. As a result, the repair cost (airbag device replacement cost) of the vehicle 1 after the accident can be kept low.

  In the present invention, the operation control method of the entanglement preventing airbag device and the pedestrian protection airbag device is not limited to the above method, for example, the traveling speed detection device and the physique detection device are omitted, When the collision sensor detects or predicts a collision between a pedestrian or the like and the vehicle, both the entrainment-preventing airbag device and the pedestrian's protective airbag device may be operated at all times.

  In this embodiment, the front surface 12 of the inflated prevention airbag 10 is an inclined surface that extends in a straight line (string shape) from the end 14 on the opposite lane side to the end 16 on the sidewalk. However, other shapes such as a curved surface extending in an arc shape may be used.

  FIG. 3 is a top view at the time of inflation of an entrainment-preventing airbag 10A according to another embodiment of the present invention.

  This entanglement airbag 10A is also inflated so as to fill a space between the front bumper at the front end of the vehicle (not shown) and the road surface, so that a pedestrian or the like who has fallen on the road by this vehicle It is prevented from being caught on the side. The entrainment-preventing airbag 10A is inflated so as to extend from the left end side to the right end side of the vehicle body along the lower surface of the front bumper of the vehicle.

  In this embodiment, in the state in which the entrainment-preventing airbag 10A is inflated, the front surface 12A has an opposite lane side end (right end in FIG. 3) 14A protruding forward of the vehicle, and the opposite lane. From the side end portion 14A, the airbag 10A has a shape that is inclined obliquely toward the middle portion (near the middle) in the left-right direction of the entrainment-preventing airbag 10A. Further, a flat surface extending in the left-right direction extends from the midway portion of the front surface 12A to an end portion (left end portion in FIG. 3) 16A on the sidewalk side.

  As shown in the figure, the entanglement-preventing airbag 10A is configured such that when a pedestrian or the like hits an end 14A near the opposite lane in the front surface 12A of the inflated prevention-envelope airbag 10A, The person or the like is guided to the middle part (the sidewalk side) along the inclined surface that is obliquely retracted from the end portion 14A toward the middle part of the front surface 12A in the left-right direction. Further, when a pedestrian or the like hits a sidewalk side region from the middle portion of the front surface 12A, the pedestrian or the like is placed on the opposite lane side by the opposite lane side end portion 14A protruding forward from the region. Is prevented from moving to. This reliably prevents the pedestrian or the like from moving toward the opposite lane when the inflated entrainment preventing airbag 10A receives the pedestrian or the like.

  In the above-described embodiment, the region from the midway portion in the left-right direction to the end portion 14A on the opposite lane in the front surface 12A of the inflated entrainment airbag 10A is from the end portion 14A to the midway portion. However, it may have other shapes such as a curved surface extending in an arc shape.

  FIG. 4 is a top view at the time of inflation of an entrainment-preventing airbag 10B according to another embodiment of the present invention.

  This entrainment-preventing airbag 10B is also inflated to fill the space between the front bumper at the front end of the vehicle (not shown) and the road surface, so that a pedestrian or the like who has fallen on the road by this vehicle It is prevented from being caught on the side. The entrainment-preventing airbag 10B is also inflated so as to extend from the left end portion to the right end portion of the vehicle body along the lower surface of the front bumper of the vehicle.

  In this embodiment, in the state in which the entrainment-preventing airbag 10B is inflated, its front surface 12B has an opposite lane side end (right end in FIG. 4) 14B and a sidewalk end (in FIG. 4). Both left end portions 16B protrude forward of the vehicle, and a portion between the end portions 14B and 16B has a shape retreating in an arc shape toward the middle in the left-right direction of the front surface 12B. .

  As shown in the figure, the entanglement-preventing airbag 10B is configured such that when a pedestrian or the like hits the end 14B near the opposite lane in the front surface 12B of the inflated prevention-envelope airbag 10B, The person or the like is led to the vicinity of the middle from the end 14B on the opposite lane side along the curved surface that is retreated toward the middle of the front surface 12B in the left-right direction. A pedestrian or the like guided to the vicinity of the middle is prevented from moving from the middle to the side of the side by the side edge 16B protruding forward from the middle and stays in the vicinity of the middle. It becomes like this.

  On the other hand, when a pedestrian or the like hits the vicinity of the end portion 16B on the sidewalk among the front surface 12B of the entrainment-preventing airbag 10B, the pedestrian or the like moves from the end portion 16B on the sidewalk side to the front surface 12B. It is guided to the vicinity of the middle along the curved surface retreated toward the vicinity of the middle. A pedestrian or the like led to the vicinity of the middle is prevented from moving from the middle to the opposite lane by the opposite lane side end 14B protruding forward from the middle, and the vicinity of the middle. To stay in.

  Therefore, in the entanglement-preventing airbag 10B, when the expanded entanglement-prevention airbag 10B receives a pedestrian or the like, the pedestrian or the like may move toward the opposite lane or move toward the sidewalk. Is also prevented. This entrainment-preventing airbag 10B is suitable for protecting a pedestrian or the like when a vehicle collides with a pedestrian or the like in a lane on the opposite lane side (non-sidewalk side) of a road having a plurality of lanes on one side. This is suitable for protecting a motorcycle occupant when a rear-end collision occurs with a motorcycle.

  In this embodiment, the front surface 12B of the inflated air bag for prevention of entrainment 10B has a shape retreating in an arc shape near the middle in the left-right direction, but is V-shaped toward the middle. It may be another shape such as a shape retreated.

  Each of the above embodiments shows an example of the present invention, and the present invention is not limited to each of the above embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a configuration of an entrainment-preventing airbag according to an embodiment and a vehicle including the entrainment-preventing airbag. It is a side view which shows the state at the time of inflation of the airbag for protection of the pedestrian etc. of the vehicle of FIG. It is a top view at the time of expansion | swelling of the airbag for entrainment prevention which concerns on another embodiment. It is a top view at the time of expansion | swelling of the airbag for entrainment prevention which concerns on another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Front bumper 4 Bonnet hood 6 Wind shield 10, 10A, 10B Entrapment prevention airbag 12, 12A, 12B Front surface (of entrapment prevention airbag) 14, 14A, 14B Opposite lane side end 16, 16A, 16B End on the sidewalk 20 Protective airbags for pedestrians

Claims (10)

In an entrainment-preventing airbag that inflates to the lower part of the front part of the vehicle body and prevents the pedestrian or the like from entraining the vehicle body underneath,
An airbag for preventing entrainment, wherein the front surface of the airbag when inflated has a shape in which the opposite lane side protrudes forward.   2. The entrainment-preventing airbag according to claim 1, wherein the front surface of the airbag when inflated has a shape retreated from the opposite lane side toward the sidewalk.   2. The entrainment-preventing airbag according to claim 1, wherein the front surface of the airbag when inflated has a shape retreated from the opposite lane side toward the middle of the vehicle body width direction. In an entrainment-preventing airbag that inflates to the lower part of the front part of the vehicle body and prevents the pedestrian or the like from entraining the vehicle body underneath,
An airbag for preventing entrainment, wherein the front surface of the airbag when inflated has a shape in which left and right end portions protrude forward.   5. The entrainment-preventing airbag according to claim 4, wherein the front surface of the airbag when inflated has a shape retreated from the left and right ends toward the center in the vehicle body width direction.   The airbag apparatus provided with the airbag of any one of Claim 1 thru | or 5.   A vehicle comprising the airbag according to any one of claims 1 to 5. In a vehicle equipped with an entrainment-preventing airbag that inflates to the lower part of the front part of the car body and prevents the pedestrians or the like from being caught under the car body
A vehicle comprising: means for inflating the entrainment-preventing airbag at the time of a collision of a pedestrian or the like when the traveling speed of the vehicle is equal to or lower than a predetermined speed.   9. The vehicle according to claim 8, further comprising a protective airbag for a pedestrian or the like that expands above the entrainment-preventing airbag at a front portion of the vehicle body.   10. The vehicle according to claim 9, further comprising means for inflating the pedestrian or the like protective airbag at the time of a collision of a pedestrian or the like in a state where the traveling speed of the vehicle is higher than a preset speed.

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