JP2015116942A - Occupant protection device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress throw-out to the outside of a vehicle by mitigating impact of an occupant, even when the occupant is thrown out to the front.SOLUTION: When a vehicle 1 comes into front collision, gunpowder 9 is ignited to generate a crack on a front window 7 into a soft state, and even when an occupant seated on a center part of a rear seat is thrown out to the front to collide with the front window 7, the impact is mitigated, and throw-out to the outside is blocked by an external air bag 21.

Description

  The present invention relates to a vehicle occupant protection device intended to protect a vehicle occupant by cracking a front window.

  As an occupant protection device, generally known is a device that operates an airbag device at the time of collision with a collision object of a vehicle to inflate the airbag between the occupant structure and mitigate the impact. Yes. In particular, a protection device for inflating an air bag on the rear surface of a seat back of a front seat is conventionally known as a protection device for a passenger in a rear seat (see, for example, Patent Document 1).

  In the technique disclosed in Patent Document 1, when a vehicle collides with a collision object (when it collides forward), an occupant of the rear seat collides by, for example, inflating an airbag on the rear surface of the seat back of the front seat Thus, it is possible to alleviate the impact when jumping forward.

  However, at the time of frontal collision of the vehicle, the passenger seated in the center of the rear seat is located between the front driver's seat and the front passenger seat, so it is not protected by the front seat back airbag, There was a risk of jumping forward. In the event of a frontal collision of the vehicle, the occupant in the front seat of the driver's seat or passenger seat may jump out forward depending on the seated state.

JP 2010-202121 A

  The present invention has been made in view of the above circumstances, and provides an occupant protection device for a vehicle that can alleviate the impact of the occupant and suppress it from being thrown out of the vehicle even when the occupant jumps forward. The purpose is to do.

  In order to achieve the above object, an occupant protection device for a vehicle according to a first aspect of the present invention comprises an external force applying means for applying an external force to a front window of the vehicle to cause a crack, and a collision of the vehicle with a collision object. A seat detecting means for detecting seating of an occupant of the vehicle, a seat belt detecting means for detecting seating of the occupant of the occupant, and seating of the occupant by the seating detecting means. Control means for operating the external force applying means when the collision detection means detects a collision of the vehicle when it is detected by the seat belt detection means that the occupant is not wearing a seat belt. It is characterized by comprising.

  According to the first aspect of the present invention, when an occupant who is not wearing a seat belt is seated and the vehicle collides with a collision object (when the vehicle collides forward), the external force applying means causes the front window. In the unlikely event that the occupant jumps forward, the impact when the occupant collides with the front window is alleviated.

  The vehicle occupant protection device according to the second aspect of the present invention is the vehicle occupant protection device according to the first aspect, wherein the control means determines that the speed of the vehicle is equal to or higher than a predetermined speed. In this case, it is determined that the external force applying means is operated.

  In the present invention according to claim 2, when the speed of the vehicle is equal to or higher than the predetermined speed, the external force applying means is operated, and when there is a high possibility that the occupant jumps forward, the front window is cracked to be in a soft state. Can do.

  A vehicle occupant protection device according to a third aspect of the present invention is the vehicle occupant protection device according to the first or second aspect, further comprising a pop-out prevention member in front of the front window of the vehicle. The control means actuates the pop-out preventing member simultaneously when operating the external force applying means.

  According to the third aspect of the present invention, when the external force applying means is operated, the pop-out prevention member is simultaneously operated, so that the jump-out prevention member prevents the occupant from jumping out of the vehicle. In other words, by operating the pop-out prevention member, the occupant is prevented from being thrown out of the vehicle from the front window.

  As the pop-out preventing member, for example, a device that deploys an airbag between the rear end of the hood hood and the front window is applied. It is also possible to employ a configuration in which the rear end of the hood hood is flipped up.

  The vehicle occupant protection device according to claim 4 of the present invention is the vehicle occupant protection device according to any one of claims 1 to 3, further comprising a notification device to the surroundings. The control means performs forced braking of the vehicle after the operation of the external force applying means and operates the notifying means.

  In the present invention according to claim 4, after the front window is cracked by the external force applying means, the vehicle is forcibly stopped and the notification means is operated to notify the surroundings that an outsider has collided. it can.

  The vehicle occupant protection device of the present invention according to claim 5 is the vehicle outsider protection device according to any one of claims 1 to 4, wherein the external force applying means is the front It has explosives arranged around the window, and ignition means for destroying the front window by igniting the explosive.

  In the present invention according to claim 5, the front window can be cracked by igniting the explosive by the ignition means. A gunpowder can be placed around the front window. The cracked portion can be generated at a portion where the occupant is expected to collide. Further, it is possible to cause a crack in the peripheral portion of the front window so that a hard part where the crack is not generated can move, and to absorb the impact as a whole.

  As the external force applying means, for example, a vibrator is provided to cause a crack in the front window by causing the vibrator to interfere, or a cylinder is provided in the window washer fluid discharge part. It is possible to generate cracks by hitting.

  According to the vehicle occupant protection device of the present invention, even when the occupant jumps forward, it is possible to reduce the impact of the occupant and prevent the vehicle from being thrown out of the vehicle.

1 is an external view of a vehicle including a vehicle occupant protection device according to an embodiment of the present invention. 1 is a schematic side view of a vehicle including a vehicle occupant protection device according to an embodiment of the present invention. It is explanatory drawing of the condition of the crack of a front window. It is a control block diagram of the passenger protection device for vehicles concerning one example of the present invention. It is a control flowchart of the passenger protection device for vehicles concerning one example of the present invention.

  FIG. 1 is an external view showing an entire vehicle including a vehicle occupant protection device according to an embodiment of the present invention, and FIG. 2 is a diagram of a vehicle including a vehicle occupant protection device according to an embodiment of the present invention. FIG. 3 is a schematic side view, FIG. 3 is a front view of a front window for explaining an example of cracking, FIG. 4 is a block diagram illustrating the relationship between input signals and output devices in a vehicle occupant protection device, and FIG. The flowchart explaining operation | movement of the passenger | crew protection device for vehicles which concerns on one Example of invention is shown.

  As shown in FIGS. 1 and 2, the vehicle 1 is provided with a vehicle speed sensor 2 as vehicle speed detection means for detecting a traveling speed, and a bumper 5 of the vehicle 1 detects a collision (front collision) of the vehicle 1. A collision detection sensor 6 is provided as detection means.

  As shown in FIG. 2, the rear seat 15 of the vehicle 1 is provided with a seating sensor 17 as seating detection means for detecting whether or not an occupant 16 is seated in the center. In addition, a seat belt sensor 18 is provided as a seat belt detecting means for detecting whether or not the occupant 16 seated in the center of the rear seat 15 is wearing the seat belt.

  Note that the seating sensor 17 and the seat belt sensor 18 are not limited to the central portion of the rear seat 15, and can be provided for the occupants of the front seat and the occupants of all the seats of the rear seat 15.

  As shown in FIGS. 1 and 2, an external airbag 21 as a pop-out prevention member is provided at the rear end portion of the hood hood on the front side of the front window (window shield) 7. The outer airbag 21 is deployed on the front side of the front window 7, and as described later, the occupant 16 is prevented from jumping out of the vehicle, and the occupant 16 is prevented from being thrown out of the vehicle.

  As shown in FIG. 3, cracks 8 are formed at appropriate locations around the front window 7, and explosives 9 are arranged in the cracks 8. The explosive 9 is ignited by an ignition means (not shown) (external force applying means). When the explosive is ignited, a crack 10 is generated in the front window 7 due to the impact of the explosion.

  Since the front window 7 is formed of laminated glass, the explosion caused by the ignition of the explosive 9 does not break down and spreads as a crack 10.

  In addition, it is also possible to operate the external airbag 21 in conjunction with the ignition of the explosive 9 to deploy the airbag.

  The occupant protection device of the present invention ignites gunpowder 9 when a vehicle 1 collides with a colliding object at a predetermined speed (when it collides forward), causes the front window 7 to crack, and makes it soft. The occupant 16 seated in the central portion of the rear seat 15 jumps out forward, and the impact when it collides with the front window 7 is reduced.

  For this reason, even when the occupant 16 jumps forward, it is possible to reduce the impact of the occupant 16 on the head and the like and to prevent the occupant 16 from being out of the vehicle.

  At the same time that the front window 7 is cracked, the external airbag 21 is activated to deploy the external airbag 21 at the front of the front window 7, and when the occupant 16 jumps forward from the rear seat 15, the external air The bag 21 prevents the passenger 16 from being thrown out.

  It is also possible to adopt a configuration in which the rear end of the hood hood is flipped up at the same time as the external airbag 21 is deployed. Further, the pop-out prevention member is not limited to the external airbag 21, and other means for preventing the occupant from being thrown forward in the vehicle direction can be considered.

  For example, a flexible mesh net such as a cloth having a certain strength is provided at the front end of a space formed by a roof panel in contact with the upper end of the front window 7 and a head lining (a member constituting the ceiling). In addition, a cable and a rail are provided on a pair of front pillars (A pillars) in contact with the end of the front window 7 in the vehicle width direction, and after the collision is detected by the collision detection sensor 6, the cable is operated. A mechanism that lowers the net along a rail provided on the front pillar and operates to cover the entire front window 7 can be considered.

  The site | part which generate | occur | produces the crack 10 of the front window 7 can be produced in the site | part which the passenger | crew 16 is anticipated to collide. It is also possible to cause cracks in the peripheral portion of the front window 7 so that a hard part where no cracks are generated can be moved and to absorb the impact as a whole.

  As the external force applying means, in addition to using the above explosives, for example, a vibrator is provided to cause the vibrator to interfere to cause a crack in the front window, or a cylinder is provided in a window washer fluid discharge portion. It is possible to use various means such as driving the cylinder driving portion against the front window to cause cracks by driving.

  As shown in FIG. 4, detection information of the vehicle speed sensor 2, the collision detection sensor 6, the seating sensor 17, and the seat belt sensor 18 is input to the control device 11 constituting the occupant protection device. The control device 11 has a function for recognizing the seating of the occupant 16, a function for recognizing the wearing of the seat belt, and a function for recognizing the vehicle speed. An operation command is output from the control device 11 to the ignition means in accordance with the seating situation of the occupant 16, the seat belt wearing situation, and the vehicle speed situation. At the same time, an operation command is output to the external airbag 21.

  Then, after the operation command to the ignition means and the external airbag 21 is issued, the brake is forcibly operated. Normally, when the vehicle 1 collides with a collision object, the driver operates the brake, but in order to stop the vehicle 1 more accurately, the brake is automatically operated to stop the vehicle 1. Yes. In particular, although it is conceivable that the vehicle 1 continues to travel after the collision with the collision object, it is necessary to avoid traveling in a state where the front window 7 has cracks 10, so the vehicle 1 is stopped. It is preferable to give top priority.

  Thereafter, the brake is operated so that the presence of the vehicle 1 (own vehicle) is notified to the surroundings, and then the notification means to the surroundings is operated. In particular, notification by sound to the surroundings, or notification such as turning on a headlamp, a brake lamp, or a hazard lamp is made to recognize the abnormality of the own vehicle to the surroundings.

  In the control device 11, when there is a possibility that the occupant 16 jumps forward when the vehicle 1 collides forward, and there is a high necessity for protection, the gunpowder 9 is ignited to cause a crack 10 in the front window 7. At the same time, the external airbag 21 is activated.

  As a result, even when the occupant 16 jumps forward, the impact of the occupant 16 can be reduced. The external airbag 21 prevents the occupant 16 from being thrown out.

  A specific operation will be described with reference to FIG.

  When the control starts, detection information of various sensors is read in step S1, and the seating of the occupant 16 in the center of the rear seat 15 is determined based on the detection information of the seating sensor 17 in step S2. If the seating sensor 17 detects seating in another place, seating of passengers such as a driver's seat, a passenger seat, and both rear seats is determined.

  If it is determined in step S2 that the occupant 16 is seated, whether or not the occupant 16 seated in the central portion of the rear seat 15 is not seated according to the detection information of the seat belt sensor 18 in step S3. Is judged.

  If it is determined in step S3 that the occupant 16 is not wearing a seat belt, that is, if it is determined that the occupant 16 seated in the center of the rear seat 15 is not wearing a seat belt, step S4 Thus, it is determined whether or not the vehicle speed h is equal to or higher than a predetermined speed H (for example, 50 km / h).

  If it is determined in step S4 that the vehicle speed h is equal to or higher than the predetermined speed H, it is determined in step S5 whether or not the vehicle 1 has collided with the collision object (previous collision) based on the detection information of the collision detection sensor 6. If it is determined in step S5 that the vehicle 1 has collided, it is determined that the vehicle speed h is a collision at a predetermined speed H or higher.

  That is, at low speed, for example, the front window 7 is not cracked in a light collision where the occupant 16 does not jump out.

  If it is determined in step S2 that the occupant 16 is not seated in the center of the rear seat 15, it is determined in step S3 that the occupant 16 seated in the center of the rear seat 15 is wearing a seat belt. In this case, if it is determined in step S4 that the vehicle speed h is less than the predetermined speed H, the process ends because the possibility that the occupant 16 is thrown forward is low even in the case of a forward collision. .

  If it is determined in step S5 that the vehicle 1 has made a front collision, that is, if it is determined that the vehicle speed h is a front collision at a predetermined speed H or higher, the ignition is controlled in step S6 and the front of the gunpowder 9 is ignited. A crack 10 is generated in the window 7. At the same time, the external airbag 21 is activated in step S7.

  As a result, even if the occupant 16 jumps forward due to a frontal collision of the vehicle 1, the impact is alleviated and the vehicle is prevented from being thrown out.

  When ignition is controlled in step S6 and the external airbag 21 is activated in step S7, the brake is activated in step S7, and the vehicle 1 is stopped accurately and reliably. After the vehicle 1 is stopped, the notifying means is activated in step S8 (sound generation, headlamps, brake lamps and hazard lamps are turned on), the abnormality of the host vehicle is recognized around, and the process is terminated.

  When the vehicle 1 collides with a collision object (front collision), the vehicle occupant protection device described above ignites the explosive 9 to generate a crack 10 in the front window 7 to make it soft, and the rear seat 15 Even if the occupant 16 seated at the center jumps forward and collides with the front window 7, the impact is alleviated and at the same time, the external airbag 21 prevents it from being released to the outside.

  For this reason, even when the occupant 16 in the center of the rear seat does not have a seat belt, even when the vehicle 1 projects forward and jumps forward, the impact of the occupant 16 is alleviated and thrown out of the vehicle. Can be suppressed.

  The present invention can be used in the industrial field of occupant protection devices for vehicles.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Vehicle speed sensor 5 Bumper 6 Collision detection sensor 7 Front window 8 Fracture 9 Gunpowder 10 Crack 11 Control device 15 Rear seat 16 Crew 17 Seat sensor 18 Seat belt sensor 21 External airbag (jump prevention member)

Claims (5)

An external force applying means for applying an external force to the front window of the vehicle to cause cracks;
A collision detection means for detecting a collision of the vehicle with a collision object;
Seating detecting means for detecting seating of a passenger of the vehicle;
Seat belt detection means for detecting the seat belt of the occupant;
When the seating detection means detects the seating of the occupant, and the seatbelt detection means detects that the occupant is not wearing a seatbelt, the collision detection means detects that the vehicle A vehicle occupant protection device comprising: control means for operating the external force applying means when a collision is detected. The vehicle occupant protection device according to claim 1,
The control means includes
The vehicle occupant protection device according to claim 1, wherein when the vehicle speed is determined to be equal to or higher than a predetermined speed, it is determined to operate the external force applying unit. In the vehicle occupant protection device according to claim 1 or 2,
A jump-out prevention member is provided in front of the front window of the vehicle,
The control means includes
The occupant protection device for a vehicle, wherein when the external force applying means is operated, the pop-out prevention member is simultaneously operated. In the vehicle occupant protection device according to any one of claims 1 to 3,
Further provided with a notification means to the surroundings,
The control means includes
The vehicle occupant protection device, wherein the vehicle is forcibly braked after the operation of the external force applying means and the informing means is operated. The occupant protection device for a vehicle according to any one of claims 1 to 4,
The external force applying means is
Explosives arranged around the front window;
An occupant protection device for a vehicle, comprising: ignition means for destroying the front window by igniting the explosive.

Images