JP4546363B2 - Rollover protection device - Google Patents

Description

  The present invention relates to a rollover protection device that activates an airbag when the roof of an automobile opens and closes and it is necessary to protect an occupant when the vehicle rolls over.

The rollover protection device mainly reduces the impact on the ground when the vehicle rolls over, and supports the vehicle body with a support member (roll bar) such as a pipe member disposed above the head of the occupant. Protect. The support member includes a fixed type and a movable type.
In the movable type, there is a technique of pulling out the support member to the upper part of the passenger's head when necessary (see, for example, Patent Document 1).
German patent invention No. 19838989

  The roll bar is used for the purpose of securing a space between the occupant and the ground when the automobile rolls over. However, if the occupant does not wear the seat belt or is not properly worn, the occupant may not be sufficiently restrained, and as a result, the protection performance by the roll bar is lowered.

  Even if the space above the occupant is secured by the roll bar, the belt hangs on one shoulder of the occupant when the tumbling occurs due to a side collision of the car, etc. There is a possibility that the binding force is insufficient, and as a result, the protection performance by the roll bar is lowered.

  Even if the present invention rolls over with the roof open, the cushioning member (airbag) is deployed to more reliably protect the occupant, prevent the entry of objects into the vehicle, and improve the occupant protection performance. It is an object of the present invention to provide an enhanced rollover protection device.

According to a first aspect of the present invention, there is provided a rollover protection member that is capable of opening and closing at least a part of a roof of a vehicle, is disposed behind a front pillar that supports a front window glass, and supports a vehicle body when the vehicle rolls over, Arranged in the vicinity of the windshield, the first buffer member that extends above the head of the occupant, the second buffer member that extends above the head of the occupant, and the vehicle is disposed on the rollover protection member. First control means for controlling deployment of the first buffer member based on information from the vehicle state detection means, and second control means for controlling deployment of the second buffer member based on information from the vehicle state detection means. The vehicle includes a first row seat including a driver's seat and a second row seat disposed after the first row seat, the rollover protection member is disposed in the vicinity of the second row seat, and the second buffer member is the second Riding in a row seat The first cushioning member is deployed above the head of the occupant of the first row seat, the first cushioning member has a rear overlapping portion at the rear end, and the second cushioning member is frontally overlapped at the front end. And the first buffer member overlaps with the front buffer part of the second buffer member in a state where the rear buffer part is placed .

The invention according to claim 2 includes a third buffer member that is disposed in the vicinity of the door opening of the vehicle and that is deployed to the side of the occupant, and a third control unit that controls the deployment of the third buffer member. It is characterized by.

In the invention according to claim 3, it is determined that the first, second, and third control means each roll over, the first control means expands the first buffer member, and the second control means uses the second buffer. A rollover operation mode in which the member is expanded and the third control means expands the third buffer member; and a side operation mode in which the third control means determines that a side collision has occurred and the third buffer member is expanded. It is characterized by that.

According to the first aspect of the present invention, the rollover protection member that supports the vehicle body at the time of rollover, the first buffer member that is disposed in the vicinity of the front window glass and extends upward, and the head that is disposed on the rollover protection member. A second buffer member that expands upward, a first control unit that controls deployment of the first buffer member based on information from the vehicle state detection unit, and a second buffer member that deploys based on information from the vehicle state detection unit. A first row seat including a driver's seat, a second row seat disposed after the first row seat, and the rollover protection member is provided in the vicinity of the second row seat. The second buffer member extends above the head of the occupant of the second row seat, the first buffer member extends above the head of the occupant of the first row seat, and the first buffer member is at the rear end. A second overlapping member having a front overlapping portion at a front end; Since overlapping in a state where the overlapped portion is resting after the first cushioning member before the overlapping portion of the buffer member, the first cushioning member toward the front of the passenger compartment located in the front window glass backwards (the first airbag body) On the other hand, the opening which opened the roof can be covered by expanding the 2nd buffer member (2nd airbag main part) toward the front from the back side of a crew room. In other words, even if the roof rolls over, the cushioning members (first and second airbag bodies) are deployed to protect the occupant more reliably and prevent the intrusion of the occupant. There is an advantage that the protection performance can be enhanced.

The invention according to claim 1 includes a first row seat including a driver seat and a second row seat, the rollover protection member is disposed in the vicinity of the second row seat, and the second buffer member is the second row seat. Since the first cushioning member is deployed above the head of the occupant of the first row seat, the occupant can be seated even if it is a four-seater or five-seater equipped with the second row seat. There is an advantage that the protection performance can be enhanced.
In the first aspect of the present invention, the first buffer member includes a rear overlapping portion at the rear end, the second buffer member includes a front overlapping portion at the front end, and the rear of the first buffer member at the front overlapping portion of the second buffer member. Since it overlaps in the state in which the overlap part was mounted, the opening which arises between the 1st and 2nd buffer members can be decreased.
Moreover, there is an advantage that the protection performance of the occupant against the intrusion of foreign matter can be improved by reducing the number of openings generated between the first and second buffer members.

Since the invention according to claim 2 includes the third buffer member that is disposed in the vicinity of the door opening of the vehicle and expands to the side of the occupant, and the third control means that controls the deployment of the third buffer member. There are advantages that the movement of the occupant to the side can be restricted and the intrusion of foreign matter from the side outside the vehicle can be prevented.
Further, the buffer member blocks the space on the side of the occupant and the space above the head, and buffers the force applied to the side and above the head. Therefore, it is possible to further improve the protection performance at the time of rollover in which the position where the force is applied changes rapidly.

In the invention according to claim 3 , it is determined that the first, second, and third control means are rollover, and the rollover operation mode in which the first, second, and third buffer members are deployed, respectively, and the third control means Since the side operation mode for expanding the third buffer member is provided, it is determined that this is a side collision, so that only the side third buffer member is expanded at the time of the side collision. As a result, the occupant can be protected in a form more suitable for each collision mode, and as a result, unnecessary deployment of the cushioning member (airbag body) can be prevented.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of a rollover protection device of the present invention.
The rollover protection device 11 is employed in the vehicle 12, and includes vehicle body support means 14 and 15 disposed at the rear of the passenger compartment 13, an airbag device 16, and an airbag control device 17 that controls the airbag device 16. . Details will be described later.

The vehicle 12 is a four-seater convertible that can open and close the roof 21, and includes a roof 21, side bodies 22, 23, a left door 24, a right door 25, a first row seat 26, and a first row seat 26. And a second row seat 27 disposed after.
The side body 22 includes front pillars 31 and 31 that are front pillars, and door openings 32 and 32 to which left and right doors 24 and 25 are attached.
The side body 23 is symmetric with the side body 22 with respect to the symmetry axis S at the center of the vehicle 12.

In the figure, 34 is a roof front rail connected to the upper part of the front pillars 31 and 31, and 35 is a front window glass.
The first row seat 26 includes a seat 38 of the driver seat 37 and a seat 42 of the passenger seat 41. L1 indicates the side of the occupant M1 (see FIG. 4) sitting on the passenger seat 41, and R2 indicates the side of the occupant M2 (see FIG. 4) sitting on the driver's seat 37.

  In the second row seat 27, the left rear seat 43 is disposed after the passenger seat 41, and the right rear seat 44 is disposed continuously to the left rear seat 43. L3 indicates the side of the occupant M3 sitting on the left rear seat 43, and R4 indicates the side of the occupant M4 sitting on the right rear seat 44.

  Here, the lower axis in the figure is a coordinate axis and indicates a direction of movement by a straight line or rotation. X is an axis indicating a horizontal linear motion before and after, Y is an axis orthogonal to X, Z is a vertical axis orthogonal to X and Y, A is an axis indicating a turning motion around the X axis, and B is around the Y axis An axis indicating the swiveling motion of C, and C is an axis indicating the swirling motion around the Z axis.

The vehicle body support means 14 is formed by fixing metal pipes 48, 48 below the left and right sides of the left rear seat 43 and on the vehicle body 47, and forming a roll-over protection member 51 in a U-shape connected to the pipes 48, 48. It is.
The vehicle body support means 15 is symmetrical with the vehicle body support means 14 with respect to the symmetry axis S.
The rollover protection member 51 includes a member that supports the vehicle body with respect to the ground when the vehicle 12 rolls over, such as the remaining part of the roof and the center pillar.

  The airbag device 16 has a first passenger seat cushioning means 54 and a driver seat first cushioning means 55 attached to a roof front rail 34 that supports the upper end of the front window glass 35, and the vehicle body support means 14 on the left rear rolls over. The left second buffering means 56 is disposed in the protection member 51, and the right second buffering means 57 is disposed in the rollover protection member 51 of the right rear body support means 15.

  The airbag device 16 further includes a left door third shock absorber 61 disposed in the left door 24, a right door third shock absorber 62 disposed in the right door 25, and the left side body 22 left The rear third buffering means 63 is arranged, the right rear third buffering means 64 is arranged in the right side body 23, and is controlled by the airbag control device 17.

  The airbag control device 17 is arranged on the vehicle 12 to detect a vehicle state detection unit 67 that detects a collision or rollover of the vehicle 12, and a control unit 68 that controls the airbag device 16 based on information from the vehicle state detection unit 67. .

  The vehicle state detection means 67 is a state of the vehicle 12 such as a rollover (A and B axis directions) or a collision of the vehicle 12, such as acceleration (for example, X axis direction), roll angle θ (A axis direction), slip (slip). The angle, pitch angle α (B-axis direction), and vehicle speed V are detected, and the specifications are arbitrary.

The control unit 68 determines whether or not the vehicle 12 may roll over based on the rollover information of the vehicle state detection means 67 and whether or not the vehicle 12 rolls over, and operates (deploys) the airbag device 16. The specification is arbitrary.
Further, the control unit 68 determines whether it is a frontal collision or a side collision based on the collision information of the vehicle state detection means 67 and activates (deploys) the airbag device 16.

Further, the control unit 68 includes a first control unit 71 that controls the first buffer unit 54 for the passenger seat and the first buffer unit 55 for the driver's seat, and a second second buffer unit that is disposed in the left rollover protection member 51. 56 and the second control means 72 for controlling the right second buffering means 57 disposed in the right rollover protection member 51, and the third control means 73 for controlling the third buffering means 61-64.
In addition, the control unit 68 includes a rollover operation mode and a side operation mode that are set as necessary.
The rollover information includes a roll angle θ and a pitch angle α. The vehicle speed V may be included.

  FIG. 2 is a view for explaining an airbag device provided in the rollover protection device of the present invention, and shows the second left buffering means 56 in a state where the rollover protection member 51 of the left rear body support means 14 is seen through.

  The second shock absorber 56 is formed by integrally attaching a metal case 76 to the rollover protection member 51, attaching a resin decorative panel 77 to the case 76, and forming an opening lid 78 on the case 76 and the decorative panel 77. In the case 76, the inflator (gas generating device) 81 and the second airbag body 82, which is the second buffer member that is deployed by the reaction gas of the inflator (gas generating device) 81, are arranged.

The inflator (gas generator) 81 is an existing inflator, and is substantially the same as, for example, an inflator disposed on an instrument panel for a passenger seat.
The second shock absorber 57 (see FIG. 1) is symmetrical with the second shock absorber 56 with respect to the symmetry axis S, and the second air bag body 83 (the second air bag main body 82 and the second air bag body 82) is the second shock absorber. Have the same).

Next, the first buffer means 54 and 55 and the third buffer means 61 to 64 will be described with reference to FIG.
The first buffer means 54 and 55 and the third buffer means 61 to 64 are substantially the same as the second buffer means 56 and 57 already described.

The first buffer means 54 has a metal case integrally attached to the roof front rail 34, a resin decorative panel 85 attached to the case, an opening lid 86 formed on the case and the decorative panel 85, An inflator (gas generator) 87 and a first airbag main body 88 that is a first buffer member that is deployed with the reaction gas of the inflator (gas generator) 87 are disposed.
The first shock absorber 55 is symmetrical to the first shock absorber 54 with respect to the symmetry axis S, and has a first airbag body 91 (same as the first airbag body 88) that is the first shock absorber. .

The third buffer means 61 is attached to a metal case on the inner panel of the left door 24 so as to correspond to the opening lid portion 92 of the left door 24, and an inflator (gas generator) 93 and an inflator (gas generator) are installed in the case. ) A third front airbag body 94 that is a third buffer member that is deployed with the reaction gas 93 is disposed.
The third cushioning means 62 is symmetrical to the third cushioning means 61 with respect to the symmetry axis S, and is a third front airbag main body 95 (the same as the third front airbag main body 94) which is the third cushioning member. Have

The third buffer means 63 is attached to a panel of the side body 22 so that a metal case corresponds to the opening lid portion 96 of the side body 22, and an inflator (gas generator) 97 and an inflator (gas generator) are installed in the case. A third rear airbag body 101, which is a third buffer member that is deployed with 97 reaction gases, was disposed.
The third shock absorber 64 is symmetrical with the third shock absorber 63 with respect to the symmetry axis S, and is a third rear airbag body 102 (same as the third rear airbag body 101) as a third shock absorber. Have

In the rollover operation mode, the first, second, and third control means 71, 72, and 73 determine that the rollover is over, respectively, and the first control means 71 determines that the first buffer member (first airbag body) 88, 91, the second control means 72 deploys the second cushioning member (second airbag body) 82, 83, and the third control means 73 the third cushioning member (third front / rear airbag body) 94. , 95, 101, 102 are expanded.
In the side operation mode, the third control means 73 determines that a side collision has occurred, and only the third buffer members (third front and rear airbag bodies) 94, 95, 101, 102 are deployed.

Next, the first to third airbag bodies will be described with reference to FIG.
The first airbag body 88 has a rear overlapping portion 106 formed at the rear end and a left overlapping portion 107 formed at the left end.
The first airbag main body 91 has a rear overlapping portion 108 formed at the rear end and a right overlapping portion 111 formed at the right end.

The second airbag body 82 has a front overlapping portion 112 formed at the front end and a left overlapping portion 113 formed at the left end.
The second airbag body 83 has a front overlapping portion 114 formed at the front end and a right overlapping portion 115 formed at the right end.

The third front airbag body 94 has an upper overlapping portion 116 formed at the upper end.
The third front airbag main body 95 has an upper overlapping portion 117 formed at the upper end. The third rear airbag main body 101 has an upper overlapping portion 118 formed at the upper end.
The third rear airbag body 102 has an upper overlapping portion 121 formed at the upper end.

Here, a four-seater automobile (convertible) has been described as an example, but the rollover protection device 11 may be employed in a roadster that is a two-seater automobile.
In the case of a roadster, change each to accommodate two passengers. Naturally, the rollover protection member 51 is disposed behind the first row seat 26, and the length of the first airbag body 88 (X-axis direction) and the length of the second airbag body 82 (X-axis direction) are about 50. %, And the third rear airbag body 101, 102 is omitted.

Next, the operation of the rollover protection device 11 will be described with reference to FIGS.
First, the deployment of only the first airbag body 88, 91 will be described, then the case where the first airbag body 88, 91 will be deployed and the second airbag body 82, 83 deployed at the same time will be described. The case where the first airbag body 88, 91, the second airbag body 82, 83, the third front / rear airbag body 94, 95, 101, 102 are deployed almost simultaneously will be described. The deployment of only the rear airbag bodies 94, 95, 101, 102 will be described.

FIG. 3 is a first operation diagram of the rollover protection device of the present invention. This will be described with reference to FIGS.
When the vehicle 12 collides or when the vehicle 12 starts to roll over, the first airbag bodies 88 and 91 are inflated so as to cover the head H1 of the occupant M1 and the head H2 of the occupant M2.
Specifically, when a collision such as a frontal collision or a side collision occurs, based on the collision information of the vehicle state detection means 67, the first control means 71 determines that it is a collision and outputs the operation information to the operation information. Based on this, the inflator 87 of the first buffer means 54 is actuated to blow the reaction gas into the first airbag main body 88. Therefore, the first airbag main body 88 is the tear line of the opening lid portion 86 set in the case and the decorative panel 85. Is opened, and the opening lid 86 is opened as indicated by an arrow a1 and is expanded as indicated by an arrow a2 into a space above the head H1 of the occupant M1.
The first control means 71 deploys the first airbag body 91 of the first buffering means 55 into the space above the head H2 of the occupant M2 as indicated by an arrow a3 at the same timing as the first airbag body 88.

Next, a case where rollover starts to occur will be described.
When the vehicle 12 rolls over for some reason, the first control unit 71 determines that there is a possibility of rollover based on the rollover information of the vehicle state detection unit 67 and outputs the operation information. The inflator 87 of the first buffer means 54 is activated. Thereafter, as described above, the first airbag body 88 is deployed in the space above the head H1 of the occupant M1 as indicated by the arrow a2, and at the same time, the first airbag body 91 is at the same timing as the first airbag body 88. Expands in the space above the head H2 of the occupant M2 as indicated by an arrow a3.

Next, a case where the second airbag bodies 82 and 83 are deployed simultaneously with the deployment of the first airbag bodies 88 and 91 will be described.
FIG. 4 is a second operation diagram of the rollover protection device of the present invention. This will be described with reference to FIGS.

The second airbag body 82, 83 is positioned above the head H3 of the occupant M3 and the occupant by the second control means 72 at substantially the same timing as the first control means 71 deploys the first airbag body 88, 91. It swells to cover the top of M4's head H4.
That is, at the same time as the first control means 71, the second control means 72 determines that the collision has occurred and outputs the operation information, and based on the operation information, the inflator 81 of the second buffer means 56 operates to supply the reaction gas to the second gas. Since the air bag body 82 is blown, the second airbag body 82 breaks the tear line of the opening lid portion 78, opens the opening lid portion 78 as indicated by an arrow a4, and is a space above the head portion H3 of the occupant M3. Expand as indicated by arrow a5. At that time, the second airbag main body 82 overlaps with the front overlapping portion 112 at the front end of the second airbag main body 82 with the rear overlapping portion 106 at the rear end of the first airbag main body 88 placed thereon.

  The second control means 72 deploys the second airbag body 83 of the second cushioning means 57 into the space above the head H4 of the occupant M4 as indicated by the arrow a6 at the same timing as the second airbag body 82. At this time, the second airbag main body 83 overlaps with the front overlapping portion 114 at the front end of the second airbag main body 83 in a state where the rear overlapping portion 108 at the rear end of the first airbag main body 91 is placed.

Next, a case where rollover starts to occur will be described.
Based on the rollover information of the vehicle state detection means 67, the second control means 72 determines that there is a possibility of rollover and outputs the operation information. Based on the operation information, the inflators 81, 81 of the second buffer means 56, 57 are output. Operates. Thereafter, as described above, the first airbag body 88 and the second airbag body 82 are both inflated and overlapped, and the arrow a5 moves to the space above the head H1 of the occupant M1 and the space above the head H3 of the occupant M3. Expand like this. At the same time, the first airbag body 91 and the second airbag body 83 are both inflated, overlapped, and deployed to the space above the head H2 of the occupant M2 and the space above the head H4 of the occupant M4 as indicated by an arrow a6. .

  As described above, in the rollover protection device 11 according to the first aspect, the first airbag main bodies 88 and 91 are deployed from the front side of the passenger compartment 13 toward the rear, and on the other hand, from the rear side of the passenger compartment 13 toward the front. By opening the second airbag main bodies 82 and 83, the opening in which the roof 21 is opened can be covered.

  Specifically, the rollover protection device 11 can protect the heads H1 to H4 of the occupants M1 to M4 from the ground and intruders. That is, even if the vehicle rolls over with the roof 21 opened, the airbags (first and second airbag bodies) 88, 91, 82, and 83 are deployed to protect the passengers M1 to M4 more reliably. It is possible to prevent objects from entering the vehicle and improve the protection performance of the passengers M1 to M4.

Further, the b Ruoba protection device 11, a first row seating 26 comprises a second row seat 27, rollover protecting member 51 is arranged near the second row seating 27, the second buffer member (second The airbag bodies (82, 83) are deployed above the heads H3, H4 of the occupants M3, M4 of the second row seat 24, and the first buffer members (first airbag bodies) 88, 91 are attached to the first row seat 26. Since the heads H1 and H2 of the passengers M1 and M2 are deployed upward, even if four to five people are seated, the heads of four to five people can be protected. Protecting performance can be enhanced.

In the rollover protection device 11 of the first aspect, when the rollover protection device 11 is adopted in a roadster that is a two-seater vehicle, the first airbag body 88 and the second airbag body 82 are both inflated and overlapped. , And expands to the space above the head H1 of the occupant M1. At the same time, the first airbag body 91 and the second airbag body 83 are both inflated, overlapped, and deployed to a space above the head H2 of the occupant M2. As a result, the head H1 of the occupant M1 and the head H2 of the occupant M2 can be protected from the ground and intruders.
That is, even if the vehicle rolls over with the roof 21 open, the airbags (first and second airbag bodies) 88, 91, 82, and 83 are deployed to more reliably protect the passengers M1 and M2, It is possible to prevent objects from entering the vehicle and improve the protection performance of the passengers M1 and M2.

  Since the second buffer member (second airbag main body) 82, 83 and the first buffer member (first airbag main body) 88, 91 are provided, the buffer for protecting the heads of two people or four to five people. The length (X-axis direction) of the member (airbag body) is shortened, and the buffer member (airbag body) can be downsized. Therefore, the buffer member (airbag body) can be deployed more quickly, and the protection performance of the passengers M1 and M2 can be enhanced.

Next, a case where the first airbag main body 88, 91, the second airbag main body 82, 83, and the third front / rear airbag main body 94, 95, 101, 102 are deployed almost simultaneously will be described.
FIG. 5 is a third operation diagram of the rollover protection device of the present invention. This will be described with reference to FIGS.
The third front and rear airbag bodies 94, 95, 101, and 102 are located on the side of the occupant M1 by the third control means 73 at the same timing as the operation timing of the first control means 71 and the second control means 72 already described. L1 is inflated so as to cover side R2 of occupant M2, side L3 of occupant M3, and side R4 of occupant M4.

  That is, at the same time as the first and second control means 71 and 72, the third control means 73 determines that there is a collision and outputs the operation information. Based on the operation information, the inflator 93 and the third buffer of the third buffer means 61 are output. The inflator 93 of the means 62, the inflator 97 of the third buffer means 63, and the inflator 97 of the third buffer means 64 are actuated to blow reaction gas into the third front and rear airbag bodies 94, 95, 101, 102, respectively. Therefore, the third front and rear airbag bodies 94, 95, 101, 102 break the tear lines of the respective opening lid portions 92, 92, 96, 96, and open the opening lid portions 92, 92, 96, 96. At the same time, it expands to the side L1 of the occupant M1, the side R2 of the occupant M2, the side L3 of the occupant M3, and the side R4 of the occupant M4.

  At that time, the upper overlapping portion 116 of the upper end of the third front airbag main body 94 overlaps the left overlapping portion 107 at the left end of the first airbag main body 88 by a predetermined distance, and the right overlapping portion at the right end of the first airbag main body 91 is overlapped. 111, an upper overlapping portion 117 of the upper end of the third front airbag main body 95 overlaps with a predetermined distance, and an upper overlapping portion of the upper end of the third rear airbag main body 101 overlaps with the left overlapping portion 113 of the left end of the second airbag main body 82. 118 overlaps a predetermined distance, and the upper overlapping portion 121 of the upper end of the third rear airbag body 102 overlaps the right overlapping portion 115 at the right end of the second airbag body 83 by a predetermined distance.

Next, a case where rollover starts to occur will be described.
Based on the rollover information of the vehicle state detection means 67, the third control means 73 determines that there is a possibility of rollover and outputs the operation information. Based on the operation information, the inflator 93 and the third buffer of the third buffer means 61 The inflator 93 of the means 62, the inflator 97 of the third buffer means 63, and the inflator 97 of the third buffer means 64 operate. The subsequent steps are as described above.

Thus, in Russia Ruoba protection device 11, the side L1 of the occupant M1, the side R2 of the occupant M2, the side L3 of the occupant M3, a 3 buffer member to expand laterally R4 of the occupant M4 (3 ago - (Rear airbag main body) 94, 95, 101, 102 and third control means 73 for controlling the deployment of the third buffer members 96, 97, 102, 103, and the side L1 of the passengers M1-M4 , R2, L3, and R4 (arrows b1 to b4) can be restricted.
Further, the third buffer member (third front / rear airbag main body) 94, 95, 101, 102 can prevent foreign matter from entering from the side.

In Russia Ruoba protection device 11, so with an overlap portion 106,108,112,114,116～118,121, it is possible to reduce the opening produced between the air bag body.
Further, by reducing the number of openings generated between the airbag bodies, it is possible to improve the occupant's protection performance against the intrusion of foreign matter.

  Next, a case where only the third front and rear airbag bodies 94, 95, 101, 102 are deployed will be described.

  When the rollover operation mode is set in the first, second, and third control means 71, 72, 73, as already explained at the time of rollover, the first buffer member (first airbag body) 88, 91, the second buffer member (Second airbag main body) 82, 83 and third buffer member (third front / rear airbag main body) 94, 95, 101, 102 are deployed.

  When the side operation mode is set in the third control unit 73, the third control unit 73 determines that the side collision is based on only the side collision information included in the collision information of the vehicle state detection unit 67 and outputs the operation information. To do. As a result, only the third front and rear airbag bodies 94, 95, 101, and 102 can be deployed only at the time of a side collision, and the occupant can be protected in a manner more suitable for each collision mode. In addition, it is possible to prevent development of an unnecessary buffer member (airbag body).

  Although the rollover protection device of the present invention is applied to an automobile capable of opening and closing the roof in the embodiment, it can also be applied to an automobile without a roof and can be applied to a general vehicle.

  The rollover protection device of the present invention is suitable for a convertible or roadster.

The perspective view of the rollover protection device of the present invention The figure explaining the airbag apparatus with which the rollover protection apparatus of this invention is provided First operation diagram of roll-over protection device of the present invention Second Operational View of Rollover Protection Device of the Present Invention 3rd action figure of the rollover protection apparatus of this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 12 ... Vehicle, 21 ... Roof, 26 ... 1st row seat, 27 ... 2nd row seat, 31 ... Front pillar (front pillar), 32 ... Door opening, 35 ... Front window glass, 37 ... Driver's seat, 51 ... Rollover protection member, 67 ... vehicle state detection means, 71 ... first control means, 72 ... second control means, 73 ... third control means, 82, 83 ... second buffer member (second airbag body), 88 91, first buffer member (first airbag body), 94, 95, third buffer member (third front airbag body), 106, 108, rear overlapping portion of the first buffer member, 107, first buffer. The left overlapping part of the member, 111... The right overlapping part of the first buffer member, 112 and 114. The front overlapping part of the second buffer member, 113. The left overlapping part of the second buffer member, 115. Part, 116-118, 121 ... 3rd buffer On the overlapping portion of the timber, M1 to M4 ... occupant, H1-H4 ... head, L1, R2, L3, R4 ... side of the occupant.

Claims (3)

A rollover protection member that can be opened and closed at least part of the roof of the vehicle, is arranged behind the front pillar that supports the front window glass, and supports the vehicle body when the vehicle rolls over;
A first buffer member that is disposed in the vicinity of the front window glass and that extends above the head of the occupant;
A second cushioning member disposed on the rollover protection member and deployed above the head of the occupant;
First control means for controlling the deployment of the first buffer member based on information of a vehicle state detection means arranged in the vehicle;
Second control means for controlling expansion of the second buffer member based on information of the vehicle state detection means ,
The vehicle includes a first row seat including a driver's seat and a second row seat disposed after the first row seat;
The rollover protection member is disposed in the vicinity of the second row seat, and the second cushioning member is deployed above the head of the passenger in the second row seat,
The first buffer member is deployed above the head of the passenger in the first row seat,
The first buffer member includes a rear overlapping portion at a rear end, and the second buffer member includes a front overlapping portion at a front end,
The rollover protection device, wherein the second buffer member overlaps with the front overlap portion of the second buffer member in a state where the rear overlap portion of the first buffer member is placed . The third buffer member disposed near the door opening of the vehicle and deployed to the side of an occupant, and third control means for controlling the deployment of the third buffer member. 1 Symbol placement of the roll-over protection device. It is determined that the first, second, and third control means are each rollover, the first control means deploys the first buffer member, the second control means deploys the second buffer member, and the third A rollover operation mode in which the control means deploys the third buffer member;
The rollover protection device according to claim 2 , further comprising: a side operation mode in which the third control means determines that a side collision has occurred and expands the third buffer member.

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