JP6937144B2 - Crew protection device - Google Patents

Description

The present invention relates to a device that protects an occupant seated in a seat in an automobile.

As a device for protecting an occupant seated in a seat in an automobile, there is a device using a seat belt or a front airbag (Patent Document 1).
The seat belt is generally a three-point type and has a wrap portion around the waist of the occupant seated on the seat and a shoulder portion that is hung in front of the upper body. Then, the seatbelt is wound up by the retractor before the collision to reduce the slack, and the delivery of the seatbelt is regulated at the time of the collision. As a result, it is possible to operate the body of the occupant who is trying to move forward from the seat in a state of being seated on the seat in the event of a collision.
The front airbag is provided on the steering wheel or dashboard provided in front of the seat in the passenger compartment and deploys backward toward the seat. Then, the upper body of the occupant who falls forward in the event of a collision is supported by the deployed front airbag to absorb the impact.

Japanese Unexamined Patent Publication No. 2010-235009

However, even if such an occupant protection device is used, it cannot be appropriately protected in all collision forms.
For example, even in a frontal collision, the occupant seated on the seat may move forward due to the impact of the collision. Then, when the waist of the occupant slides forward from the seating position of the seat, the upper body, which tries to fall forward around the waist as an axis, falls forward from the state approaching the front airbag. It will be. In this case, the contact state between the front airbag and the upper body is different from that assumed when the waist is in the seating position of the seat.
In addition, the behavior of the occupant in the event of a collision changes depending on the front-rear adjustment position of the seat in the vehicle body, the body shape of the occupant seated on the seat, the sitting posture of the occupant, and the like.

As described above, the occupant protection device is required to further improve the occupant protection performance.

The occupant protection device according to the present invention includes a seat width expanding portion that expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat provided in the vehicle, and the seat width. Lower and lower airbags having a bag engaging portion provided at at least one end of the left side portion and the right side portion of the deploying portion, and below the thigh portion of the occupant provided on the vehicle and seated on the seat. It has an engaging member that engages with the bag engaging portion on the side, and the upper and lower airbags are not engaged with the bag engaging portion and the engaging member before the upper and lower airbags are deployed. during vertical airbag deployment, the sheet width expansion section when deployed, said bag engaging portion is engaged with the engaging member.

Preferably, the seat width expanding portion is in contact with the thigh portion of the occupant seated on the seat in a state where the bag engaging portion is engaged with the engaging member.

Preferably, the bag engaging portion is a plurality of protruding portions protruding downward from both the left side portion and the right side portion of the seat width developing portion, and the engaging member is on both the left and right sides of the seat. It is preferable that the plurality of engaging holes are provided in the above and the protruding portion is inserted.

Preferably, the seat width deploying portion is deployed toward the front of the waist portion of the occupant seated on the seat.

Preferably, the engaging member is provided at a height position below the seat surface of the seat and engages with the bag engaging portion below the seat surface of the seat.

Preferably, the engaging member has a guide portion that guides the bag engaging portion to the engaging portion.

Preferably, the upper and lower airbags have a right shoulder front deploying portion and a left shoulder front deploying portion that deploy from the ceiling of the vehicle toward the front of both shoulders of the occupant seated on the seat, and the seat width. The unfolding portion is connected to the lower end of the right shoulder front unfolding portion and the lower end of the left shoulder front unfolding portion, and unfolds in front of the chest of the occupant seated on the seat, and the right shoulder front unfolding portion and the left shoulder front unfolding portion. Is preferably developed in a state in which it is more easily deformed than the seat width developing portion.

Preferably, the upper and lower airbags have a head receiving deploying portion on the upper side of the seat width deploying portion and between the right shoulder front deploying portion and the left shoulder front deploying portion. It is preferable that the head receiving deploying portion is deployed in a state in which it is more easily deformed than the seat width deploying portion.
Further, the occupant protection device according to the present invention includes a seat width expanding portion that expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat provided in the vehicle, and the above. Upper and lower airbags having a bag engaging portion provided at at least one end of the left side portion and the right side portion of the seat width expanding portion, and a thigh portion of an occupant provided on the vehicle and seated on the seat. It has an engaging member that engages with the bag engaging portion on the lower side, and the bag engaging portion projects downward from both the left side portion and the right side portion of the seat width developing portion. a plurality of projections, wherein the engagement member is provided in plurality in the right and left sides of the seat, has an engaging hole in which the protrusion is inserted, when the sheet width expansion unit is deployed, the bag engagement engaging portion is engaged with the engaging member, it may be.
Further, the occupant protection device according to the present invention includes a seat width expanding portion that expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat provided in the vehicle, and the above. Upper and lower airbags having a bag engaging portion provided at at least one end of the left side portion and the right side portion of the seat width expanding portion, and a thigh portion of an occupant provided on the vehicle and seated on the seat. It has an engaging member that engages with the bag engaging portion on the lower side, and the upper and lower airbags deploy from the ceiling of the vehicle toward the front of both shoulders of the occupant seated on the seat. has a development unit, before pre-deployment unit and a left shoulder right shoulder, the the sheet width expansion unit is deployed, the bag engaging portion is engaged with the engaging member, the sheet width expansion section, the right shoulder before It is connected to the lower end of the unfolded portion and the lower end of the left shoulder front unfolded portion, and is deployed in front of the chest of the occupant seated on the seat. It may be developed in a state where it is easily deformed.

In the present invention, the occupant protection device has upper and lower airbags and an engaging member. Then, in the upper and lower airbags, the seat width expanding portion expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat, and the bag engaging portion expands on the seat width expanding portion. It is provided at at least one end of the left side and the right side. Further, the bag engaging portion engages with the engaging member below the thigh of the occupant who is provided on the vehicle and is seated on the seat. As a result, the seat width deploying portion of the upper and lower airbags can be deployed in front of the upper body of the occupant seated on the seat to suitably support the seat width deploying portion.
Moreover, the seat width expanding portion that expands with a width corresponding to the left and right width of the seat expands on the seat with a width corresponding to the left and right width of the seat in a state where the bag engaging portion engages with the engaging member. .. Therefore, the seat width expanding portion presses, for example, the thigh of the occupant seated on the seat by sandwiching it between the seat surface and the seat surface. The occupant can be held in the seated state regardless of the front-rear adjustment position of the seat in the vehicle body, the seating position and posture on the seat before deployment, and the body shape of the occupant.
As a result, the waist of the occupant is difficult to move from the seated position of the seat to the front in the event of a collision because, for example, the thigh is sandwiched between the upper and lower airbags and the seat. Then, for example, in the case of a frontal collision, the occupant's upper body can fall forward around the waist that is stable in the seating position, and the behavior of the occupant's upper body in the event of a collision approaches what is desired. Then, it can absorb the impact by being supported by the upper body and the upper and lower airbags that fall forward around the waist in the seated position.

In particular, as the bag engaging portion, a plurality of protruding portions that expand downward from both the left side portion and the right side portion of the seat width expanding portion are provided, and a plurality of engagement portions provided on both the left and right sides of the seat. Engage with the engaging holes of the mating member on both the left and right sides of the seat. As a result, both the left and right thighs of the occupant seated on the seat, for example, the entire thighs can be sandwiched and pressed between the seat width expanding portion and the seat surface of the seat. As a result, it becomes difficult for the waist of the occupant to slide forward from the position where he / she is seated on the seat.

FIG. 1 is an explanatory view of an automobile to which the occupant protection device according to the embodiment of the present invention can be applied. FIG. 2 is an explanatory diagram of an example of occupant behavior in a full-wrap head-on collision. FIG. 3 is an explanatory view of an example in which the upper body is collapsed while the waist of the occupant is in the seating position of the seat. FIG. 4 is an explanatory diagram of the occupant protection device according to the first embodiment. FIG. 5 is a front view illustrating a state in which the upper and lower airbags of FIG. 4 are deployed. FIG. 6 is a side view and a top view illustrating a state in which the upper and lower airbags of FIG. 4 are deployed. FIG. 7 is an explanatory view of the deployment process of the upper and lower airbags of FIG. FIG. 8 is an explanatory view of the occupant protection device according to the second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is an explanatory view of an automobile 1 to which the occupant protection device 10 according to the embodiment of the present invention can be applied.

The automobile 1 is an example of a vehicle. The automobile 1 has a vehicle body 3 in which the passenger compartment 2 is formed. The occupant room 2 is provided with two front seats 4 and rear seats 4 which are provided facing forward in the occupant room 2 and in which an occupant sits. Doors 5 that are opened and closed for passengers to get on and off are provided on both the left and right sides of the passenger compartment 2. In front of the front seat 4, a dashboard 6 having a length corresponding to the left-right width of the passenger compartment 2 is provided. A center console 7 is provided between the two front seats 4.

By the way, in such an automobile 1, a device for protecting an occupant seated on the seat 4 is provided in the event of a collision with another automobile or the like.
FIG. 1 shows a seat belt 19 and a front airbag 16.
The seat belt 19 is generally a three-point type. The three-point seat belt 19 has a wrap portion around the waist of an occupant seated on the seat 4 and a shoulder portion that is hung in front of the upper body. Then, the seatbelt 19 is wound up by a retractor (not shown) to reduce the slack before the collision, and the delivery of the seatbelt 19 is regulated at the time of the collision. As a result, the body of the occupant who intends to move forward from the seat 4 in the event of a collision can be operated to be held in a seated state on the seat 4.
The front airbag 16 is provided on a steering wheel or dashboard 6 provided in front of the seat 4 in the passenger compartment 2 and deploys backward toward the seat 4. Then, the upper body of the occupant who falls forward in the event of a collision can be supported by the deployed front airbag 16 to absorb the impact.
However, even if such an occupant protection device 10 is used, it is not possible to appropriately protect the occupants in all collision modes. For example, even in a head-on collision, there are at least full-wrap collisions, offset collisions, and oblique collisions. If the form of the collision is different, the magnitude and direction of the impact force acting on the vehicle body 3 and the occupant's body at the time of the collision are different, and the behavior of the vehicle body 3 and the occupant is also different.

For example, FIG. 2 is an explanatory diagram of an example of occupant behavior in a full-wrap head-on collision.
When a head-on collision occurs while the occupant is seated on the seat 4, as shown in FIG. 2 (A), a force that tends to move forward relatively acts on the occupant seated on the seat 4 due to the impact of the collision. ..
At this time, assuming that the occupant is not pressed by the seat belt 19, the waist portion of the occupant slides forward from the seating position of the seat 4 as shown in FIG. 2 (B).
Then, the waist of the occupant stops, for example, with the kneecap hitting the dashboard 6, and the upper body of the occupant falls forward around the waist at that position as shown in FIG. 2 (C). Become.

On the other hand, FIG. 3 is an explanatory view of an example in which the upper body of the occupant is collapsed while the waist portion of the occupant is in the seating position of the seat 4.
The contact state of the upper body with the front airbag 16 in FIG. 2C is different from that assumed when the waist is in the seating position, as is clear from the comparison with FIG. The occupant's upper body falls forward at a position close to the front airbag 16. The contact state between the deployed front airbag 16 and the upper body is different from that in the case where the waist is assumed to be in the seating position of the seat 4. In this case, the deployed front airbag 16 may not be able to properly support the collapsed upper body and absorb the impact.
In addition, the upper body suddenly falls forward in a short time after the movement of the waist has stopped.

Further, the behavior of the occupant in the event of a collision changes depending on the front-rear adjustment position of the seat 4 on the vehicle body 3, the body shape of the occupant seated on the seat 4, the seating posture of the occupant, and the like.

As described above, the occupant protection device 10 is required to further improve the occupant protection performance.

FIG. 4 is an explanatory view of the occupant protection device 10 according to the first embodiment.

FIG. 4 shows the automatic driving control device 40 together with the occupant protection device 10. The automatic driving control device 40 includes an external image sensor 41, an automatic driving control unit 42, a steering actuator 43, a brake actuator 44, and a power source 45.
The vehicle exterior image sensor 41 images the front of the vehicle body 3, for example. Thereby, for example, another vehicle body approaching the traveling vehicle body 3 from the front can be imaged as an image.
The steering actuator 43 drives the steering device of the automobile 1 instead of the steering wheel.
The brake actuator 44 drives the braking device of the automobile 1 instead of the brake pedal.
The power source 45 is, for example, a gasoline engine or an electric motor.
The automatic driving control unit 42 automatically controls the traveling of the automobile 1. The automatic driving control unit 42 controls the steering actuator 43, the brake actuator 44, and the power source 45 according to, for example, travel route information to the destination. Further, the automatic driving control unit 42 identifies an approaching object based on the image of the vehicle exterior image sensor 41 and predicts a collision with the approaching object. Then, when a collision with an approaching object is predicted, the automatic driving control unit 42 controls the steering actuator 43, the brake actuator 44, and the power source 45 so as to avoid the collision.

The occupant protection device 10 of FIG. 4 includes an occupant position sensor 11, a G sensor 12, a timer 13, an occupant protection control unit 14, a front airbag device 15, a three-point seatbelt device 18, and an upper and lower airbag device 20.

The occupant position sensor 11 detects the position of the head or the position of the upper body of the occupant seated on the seat 4. For example, the occupant position sensor 11 detects the amount of movement in the forward direction or the amount of movement in the left-right direction with reference to the seating position on which the seat 4 is backed.

The G sensor 12 detects the acceleration acting on the automobile 1. The direction of the detected acceleration may be the front-back direction, the left-right direction, or the up-down direction.

The timer 13 measures the time or time.

The front airbag device 15 is provided in front of an occupant seated on the seat 4. The front airbag device 15 is provided on, for example, a dashboard 6 or a steering wheel. The front airbag device 15 includes a front airbag 16 and an inflator 17. When the ignition signal is input, the inflator 17 releases gas into the front airbag 16. As a result, the front airbag 16 is deployed rearward toward the occupant seated in the seat 4. The front airbag 16 is deployed in front of the occupant's upper body.

The three-point seat belt device 18 has a seat belt 19. The seat belt 19 has a wrap portion provided around the waist portion of the occupant seated on the seat 4 by engaging the tongue (not shown) with the buckle, and one shoulder portion to the inside of the waist portion of the upper body. It forms a shoulder part that is hung over the part. Then, when the pretension signal or the support signal is input, the retractor (not shown) winds up the seat belt 19. For example, the seatbelt 19 is wound up before the collision to reduce the slack, and the delivery of the seatbelt 19 is regulated at the time of the collision. As a result, the body of the occupant who intends to move forward from the seat 4 in the event of a collision can be held in a state of being seated on the seat 4.

The occupant protection control unit 14 includes an external image sensor 41, an automatic operation control unit 42, an occupant position sensor 11, a G sensor 12, a timer 13, a front airbag device 15, a three-point seatbelt device 18, and an upper and lower airbag device 20. Be connected.
The occupant protection control unit 14 determines the possibility of a collision from the information of the sensor. Then, when there is a possibility of a collision, the occupant protection control unit 14 executes pre-crash control. In the pre-crash control, the occupant protection control unit 14 executes, for example, pre-tension control for winding up the seat belt 19.
Further, when the occupant protection control unit 14 detects a collision from the sensor information, the occupant protection control unit 14 executes the occupant protection control. In the occupant protection control, the occupant protection control unit 14 regulates the delivery of the seat belt 19 and deploys the front airbag 16.

FIG. 5 is a front view illustrating a state in which the upper and lower airbags 23 of FIG. 4 are deployed.
FIG. 6 is a side view and a top view illustrating a state in which the upper and lower airbags 23 of FIG. 4 are deployed.
The upper and lower airbag device 20 has a main body 22 on which the inflator 21 is arranged, an upper and lower airbag 23 that is deployed from the main body 22 by the gas generated by the inflator 21, and an engaging member 31.

The main body 22 is arranged at a position on the ceiling of the automobile 1 behind the seat 4. The main body 22 may be provided with a width corresponding to the left-right width of the seat 4.

The upper and lower airbags 23 are deployed from the main body 22 provided on the ceiling of the automobile 1 toward the lower front. The upper and lower airbags 23 are deployed so as to reach in front of the occupant's waist from above to below the occupant's shoulders seated on the seat 4.
As shown in FIG. 6, the upper and lower airbags 23 have a right shoulder front deploying portion 24, a left shoulder front deploying portion 25, a chest front deploying portion 26 as a seat width deploying portion, and a head receiving deploying portion 28.
The right shoulder front deploying portion 24 is a portion that expands downward from the main body 22 provided on the ceiling of the automobile 1 to the height of the right shoulder portion of the occupant seated on the seat 4 above the right end portion of the seat 4. be. The right shoulder front deployment portion 24 deploys in front of the right shoulder portion of the occupant seated on the seat 4.
The left shoulder front deploying portion 25 is a portion that expands downward from the main body 22 provided on the ceiling of the automobile 1 to the height of the shoulder portion of the occupant seated on the seat 4 above the left end portion of the seat 4. The left shoulder front deploying portion 25 deploys in front of the left shoulder portion of the occupant seated on the seat 4.
The chest front deployment portion 26 is connected to the lower end of the right shoulder front deployment portion 24 and the lower end of the left shoulder front deployment portion 25, and is deployed in front of the chest of the occupant seated on the seat 4 with a width corresponding to the left and right width of the seat 4. It is the part to do. The chest front deployment portion 26 has a height at which the lower edge in the deployment direction reaches below the seat surface of the seat 4. The vertical deployment length of the upper and lower airbags 23 is formed to be longer than the height from the ceiling of the automobile 1 to the seat surface of the seat 4.
The head receiving deployment portion 28 is a portion that expands to a portion above the chest front deployment portion 26 and between the right shoulder front deployment portion 24 and the left shoulder front deployment portion 25. The head receiving deployment portion 28 has a concave shape corresponding to the chin portion of the occupant.
Then, the right shoulder front deployment portion 24 and the left shoulder front deployment portion 25 are deployed in a state in which they are more easily deformed than the chest front deployment portion 26. It is deployed in a state in which it is more easily deformed than the right shoulder front deploying portion 24 and the left shoulder front deploying portion 25. For example, by lowering the unfolding pressure or using the unfolding bag body as a highly elastic material, the unfolding portion becomes easily deformed. The right shoulder front deployment portion 24, the left shoulder front deployment portion 25, the chest front deployment portion 26, and the head receiving deployment portion 28 may be configured as one air chamber communicating with each other. Even in this case, by providing a pressure on-off valve or the like between the deploying portions, each portion can be deployed at different pressures.

Further, the upper and lower airbags 23 are provided with a pair of left and right bag engaging portions 29. The pair of left and right bag engaging portions 29 are provided on both the left side portion and the right side portion of the chest front deploying portion 26 formed in a width corresponding to the left and right width of the seat 4.
The bag engaging portion 29 projects below the lower edge of the chest front deploying portion 26.
The bag engaging portion 29 may be formed as a deployable portion in the same manner as the other portions of the upper and lower airbags 23.

A plurality of engaging members 31 are provided on both the left and right sides of the seat 4. The plurality of engaging members 31 are provided between the seat portion of the seat 4 and the door 5, and between the seat portion of the seat 4 and the center console 7.
The engaging member 31 is provided at a height position below the seating surface of the seat 4.
Then, an engaging hole 32 into which the bag engaging portion 29 is inserted is formed on the upper surface of the engaging member 31.

FIG. 7 is an explanatory view of the deployment process of the upper and lower airbags 23 of FIG.

Before the collision shown in FIG. 7A, the occupant protection control unit 14 determines the possibility of a collision. Then, when there is a possibility of a collision, the occupant protection control unit 14 deploys the upper and lower airbag devices 20.
As shown in FIG. 7B, the upper and lower airbags 23 start to deploy from the ceiling of the automobile 1 located above the shoulders of the occupants seated on the seat 4 of the automobile 1 toward the lower front. The chest front deployment portion 26 of the upper and lower airbags 23 deploys toward the waist in front of the upper body of the occupant seated on the seat 4.
Then, as shown in FIG. 7C, the pair of left and right bag engaging portions 29 projecting downward from the lower edge of the chest front deploying portion 26 are provided in the pair of engaging holes 32 provided on the left and right sides of the seat 4. come in. As a result, the pair of left and right bag engaging portions 29 engage with the pair of left and right engaging holes 32 on the lower side of the seat surface of the seat 4. They engage with each other below the thighs of the occupants seated on the seat 4. The lower end of the chest front deployment portion 26 comes into contact with the thighs on both the left and right sides of the occupant seated on the seat 4 so as to abut against each other. It hits the front of the waist or its vicinity. As a result, the waist of the occupant seated on the seat 4 is pressed to the seating position of the seat 4 before the collision.
Further, the chest front deploying portion 26, which is deployed with a width corresponding to the left-right width of the seat 4, comes into contact with the upper surface of the occupant's thigh from above in a state where the bag engaging portion 29 and the engaging member 31 are engaged.
After that, when a collision actually occurs, the upper body of the occupant seated on the seat 4 falls forward with the waist held at the seating position of the seat 4. The upper body collapses into the upper and lower airbags 23.
The deployment timing of the upper and lower airbags 23 may be the timing at which an actual collision is detected. Even in this case, the upper and lower airbags 23 can hold the waist of the occupant seated on the seat 4 so as not to slip forward in the event of a collision, and can support the upper body that collapses due to the impact of the collision.

As described above, in the present embodiment, the occupant protection device 10 has the upper and lower airbags 23 and the engaging member 31. Then, in the upper and lower airbags 23, the chest front deploying portion 26 expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat 4 with a width corresponding to the left and right width of the seat 4, and the bag engaging portion 29 expands to the chest. It is provided at at least one end of the left side portion and the right side portion of the front unfolding portion 26. Further, the bag engaging portion 29 is provided at a height position below the thigh of the occupant seated on the seat 4 in the automobile 1 and engages with the engaging member 31 below the thigh. As a result, the chest front deployment portion 26 of the upper and lower airbags 23 can be deployed in front of the upper body of the occupant seated on the seat 4 to suitably support the upper body.
Moreover, the chest front deploying portion 26, which is deployed with a width corresponding to the left-right width of the seat 4, comes into contact with the thigh of the occupant in a state where the bag engaging portion 29 is engaged with the engaging member 31. Therefore, the thighs of the occupant seated on the seat 4 are sandwiched and pressed between the chest front deployment portion 26 and the seat surface of the seat 4. The occupant can be held in the seated state regardless of the front-rear adjustment position of the seat 4 on the vehicle body 3, the seating position and posture on the seat 4 before deployment, and the body shape of the occupant.
As a result, the waist of the occupant is difficult to move from the seating position of the seat 4 to the front or the like in the event of a collision because the thigh is sandwiched between the upper and lower airbags 23 and the seat 4. Then, for example, in the case of a frontal collision, the occupant's upper body can fall forward around the waist that is stable in the seating position, and the behavior of the occupant's upper body in the event of a collision approaches what is desired. Then, it can absorb the impact by being supported by the upper body and the upper and lower airbags 23 that fall forward around the waist in the seated position.

In particular, as the bag engaging portion 29, a plurality of protruding portions that expand downward from both the left side portion and the right side portion of the chest front deploying portion 26 are provided, and are provided on both the left and right sides of the seat 4. The engagement holes 32 of the plurality of engaging members 31 are engaged with each other on the left and right sides of the seat 4. As a result, the entire left and right thighs of the occupant seated on the seat 4 can be sandwiched and pressed between the chest front deployment portion 26 and the seat surface of the seat 4. As a result, the waist of the occupant slides forward from the position seated on the seat 4 and becomes difficult to move.

In the above embodiment, the bag engaging portion 29 is a protruding portion that expands downward from the left side portion or the right side portion of the chest front deploying portion 26, and is formed with the engaging hole 32 of the engaging member 31. Engagement. In addition, for example, the bag engaging portion 29 and the engaging member 31 may be made of Velcro tape (registered trademark). Further, the bag engaging portion 29 and the engaging member 31 may be instantaneously welded.

In the present embodiment, the chest front deployment portion 26 deploys toward the front of the waist portion of the occupant seated on the seat 4. Therefore, the waist of the occupant seated on the seat 4 slides forward from the seated position and becomes difficult to move.

In the present embodiment, the engaging member 31 is provided at a height position below the seating surface of the seat 4. Then, the engaging member 31 and the bag engaging portion 29 are engaged on the lower side of the seat surface of the seat 4. Therefore, both the left and right thighs of the occupant seated on the seat 4 can be sandwiched between the chest front deployment portion 26 and the seat surface of the seat 4.

In the present embodiment, the right shoulder front deployment portion 24 and the left shoulder front deployment portion 25 are deployed in a state in which they are more easily deformed than the chest front deployment portion 26. Therefore, the right shoulder front deployment portion 24 and the left shoulder front deployment portion 25 can be deformed in a situation where the chest front deployment portion 26 absorbs the impact of the upper body. As a result, the deformation of the front chest deployment portion 26 during shock absorption can be suppressed, and the deformation of the front chest deployment portion 26 makes it difficult for the force to bend the upper body to act.

In the present embodiment, a head receiving deploying portion 28 that deploys in a state that is more easily deformed than the chest deploying portion 26 is provided above the chest deploying portion 26. Therefore, the impact of the occupant's head can be absorbed by the head receiving and deploying portion 28.

[Second Embodiment]
Next, the occupant protection device 10 according to the second embodiment of the present invention will be described.
In the following description, the same reference numerals as those of the first embodiment will be used for the same configurations as those of the first embodiment, and the differences from the first embodiment will be mainly described.

FIG. 8 is an explanatory view of the occupant protection device 10 according to the second embodiment. FIG. 8 (A) shows a state in the process of unfolding, and FIG. 8 (B) shows a state in which the unfolded state is in progress.
In FIG. 8, the engaging member 31 is formed with a tapered guide surface 33 on the upper surface around the engaging hole 32.
Then, the bag engaging portion 29 of the upper and lower airbags 23 that expands from top to bottom hits the tapered guide surface 33 during deployment, and is guided to the engaging hole 32 by further expanding downward, and is guided to the engaging hole 32. Can engage with.

As described above, the bag engaging portion 29 of the upper and lower airbags 23 is guided by the tapered guide surface 33 during the deployment even if the deployment direction of the upper and lower airbags 23 is slightly tilted back and forth, for example. It can be engaged with the mating member 31. For example, even if the upper and lower airbags 23 are slightly displaced forward due to the body shape of the occupant seated on the seat 4, the upper and lower airbags 23 can be engaged with the engaging member 31.

The above embodiments are examples of preferred embodiments of the present invention, but the present invention is not limited thereto, and various modifications or modifications can be made without departing from the gist of the invention.

1 ... automobile (vehicle), 2 ... passenger compartment, 3 ... car body, 4 ... seat, 5 ... door, 6 ... dashboard, 7 ... center console, 10 ... occupant protection device, 11 ... occupant position sensor, 12 ... G sensor , 13 ... Timer, 14 ... Passenger protection control unit, 15 ... Front airbag device, 16 ... Front airbag, 17 ... Inflator, 18 ... Three-point seatbelt device, 19 ... Seatbelt, 20 ... Upper and lower airbag device, 21 ... Inflator, 22 ... Main body, 23 ... Upper and lower airbags, 24 ... Right shoulder front deployment, 25 ... Left shoulder front deployment, 26 ... Chest front deployment (seat width deployment), 28 ... Head receiving deployment, 29 ... Bag engaging part, 31 ... engaging member, 32 ... engaging hole, 33 ... guide surface, 40 ... automatic driving control device, 41 ... outside imaging sensor, 42 ... automatic driving control unit, 43 ... steering actuator, 44 ... brake Actuator, 45 ... Power source.

Claims (10)

A seat width expansion portion that expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat provided in the vehicle, and a left side portion and a right side portion of the seat width expansion portion. An upper and lower airbag having a bag engaging portion, provided at at least one end of the
An engaging member provided on the vehicle and engaged with the bag engaging portion below the thigh of the occupant seated on the seat.
Have,
Before the upper and lower airbags were deployed, the bag engaging portion and the engaging member were not engaged.
When the upper and lower airbags are deployed, when the seat width deploying portion is deployed, the bag engaging portion engages with the engaging member.
Crew protection device. The seat width developing portion is in contact with the thigh of an occupant seated on the seat in a state where the bag engaging portion is engaged with the engaging member.
The occupant protection device according to claim 1. The bag engaging portion is a plurality of protruding portions that protrude downward from both the left side portion and the right side portion of the seat width developing portion.
A plurality of the engaging members are provided on both the left and right sides of the sheet, and have engaging holes into which the protruding portions are inserted.
The occupant protection device according to claim 1 or 2. The seat width deploying portion expands toward the front of the waist portion of the occupant seated on the seat.
The occupant protection device according to any one of claims 1 to 3. The engaging member is provided at a height position below the seat surface of the seat, and engages with the bag engaging portion below the seat surface of the seat.
The occupant protection device according to any one of claims 1 to 3. The engaging member has a guide portion that guides the bag engaging portion to the engaging portion.
The occupant protection device according to any one of claims 1 to 5. The upper and lower airbags have a right shoulder front deployment portion and a left shoulder front deployment portion that expand from the ceiling of the vehicle toward the front of both shoulder portions of the occupant seated on the seat.
The seat width deploying portion is connected to the lower end of the right shoulder front deploying portion and the lower end of the left shoulder front deploying portion, and deploys in front of the chest of the occupant seated on the seat.
The right shoulder front unfolding portion and the left shoulder front unfolding portion are deployed in a state in which they are more easily deformed than the seat width unfolding portion.
The occupant protection device according to any one of claims 1 to 6. The upper and lower airbags
A head receiving deploying portion is provided on the upper side of the seat width deploying portion and between the right shoulder front deploying portion and the left shoulder front deploying portion.
The head receiving deploying portion is deployed in a state in which it is more easily deformed than the seat width deploying portion.
The occupant protection device according to claim 7. A seat width expansion portion that expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat provided in the vehicle, and a left side portion and a right side portion of the seat width expansion portion. An upper and lower airbag having a bag engaging portion, provided at at least one end of the
An engaging member provided on the vehicle and engaged with the bag engaging portion below the thigh of the occupant seated on the seat.
Have,
The bag engaging portion is a plurality of protruding portions that protrude downward from both the left side portion and the right side portion of the seat width developing portion.
A plurality of the engaging members are provided on both the left and right sides of the sheet, and have engaging holes into which the protruding portions are inserted.
When the seat width developing portion expands, the bag engaging portion engages with the engaging member.
Crew protection device. A seat width expansion portion that expands from the upper side to the lower side of the shoulder portion of the occupant seated on the seat with a width corresponding to the left and right width of the seat provided in the vehicle, and a left side portion and a right side portion of the seat width expansion portion. An upper and lower airbag having a bag engaging portion, provided at at least one end of the
An engaging member provided on the vehicle and engaged with the bag engaging portion below the thigh of the occupant seated on the seat.
Have,
The upper and lower airbags have a right shoulder front deployment portion and a left shoulder front deployment portion that expand from the ceiling of the vehicle toward the front of both shoulder portions of the occupant seated on the seat.
When the sheet width expansion unit is deployed, the bag engaging portion is engaged with the engaging member,
The seat width deploying portion is connected to the lower end of the right shoulder front deploying portion and the lower end of the left shoulder front deploying portion, and deploys in front of the chest of the occupant seated on the seat.
The right shoulder front unfolding portion and the left shoulder front unfolding portion are deployed in a state in which they are more easily deformed than the seat width unfolding portion.
Crew protection device.

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