JP2563749Y2 - Energy absorption device on the side of the vehicle - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention protects occupants in the vehicle by absorbing the impact energy when a relatively large impact is applied to the side of the vehicle body from the outside. The present invention relates to an energy absorbing device for a side portion of a vehicle body.

(Prior Art) In a vehicle, when a relatively large impact is applied to a vehicle body at the time of a collision or the like, an energy absorbing bag, which is usually called an airbag, is in a contracted state in a normal state. By rapidly inflating and absorbing the impact energy with the energy absorbing bag in the inflated state,
It has been proposed to protect the occupant by mitigating the impact of an impact on the occupant in the vehicle.

In a vehicle provided with such an energy absorbing bag, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 1-117957, the vehicle is folded inside an armrest portion provided on the passenger compartment side of a door forming a vehicle body side portion. Energy storage bag, and an inert gas generating agent, and an ignition device for causing the inert gas generating agent to take an inert gas generating state. Further, for example, a vehicle body located below a door Is provided with a shock detection sensor for detecting a relatively large shock applied to the side sill.
Then, when the impact detection sensor emits an impact detection output, the ignition device is operated in response to the impact, and the inert gas generating agent generates an inert gas. Rapidly pumped into the absorbent bag, the energy absorbing bag breaks the thin film formed on the armrest and is rapidly inflated out of the armrest. In the case where the energy absorbing bag is provided on the vehicle body side as described above, for example, when an impact due to a side collision (collision of the vehicle with another vehicle or the like from the side) is applied to the vehicle body side, the energy is absorbed. The bag is instantly inflated toward the passenger compartment and is interposed between the side of the vehicle body, for example, a door and a shoulder of an occupant seated inside the door. Thereby, the impact energy due to the impact applied to the side of the vehicle body is absorbed by the inflated energy absorbing bag, the impact force acting on the occupant from the side is reduced, and the occupant is protected. In order to reduce the impact of the energy absorbing bag on the occupant who collides with the energy absorbing bag when the energy absorbing bag is inflated, the energy absorbing bag is usually provided with a plurality of gas vent holes to complete the inflation. Later, the gas filled inside is discharged from the gas vent hole.

(Problem to be Solved by the Invention) However, as described above, when a relatively large external impact is applied to the vehicle body side, an energy absorbing bag is provided which is inflated from the vehicle body side to the vehicle compartment side. In the vehicle, for example, when an occupant sits on a seat arranged in proximity to a door forming a vehicle body side portion provided with an energy absorbing bag, a part of the occupant's clothes and the like are replaced with the door and the seat. The impact due to collision or the like is applied to the door while it is in the space formed between the doors, and the energy absorbing bag provided in the door is inflated toward the passenger compartment. Then, the door is deformed so as to protrude toward the passenger compartment due to an impact due to a side collision, and a part of the occupant's clothes is restrained between the deformed door and the seat. For moving to the center of the room It is possible that a hindrance will occur. To avoid such inconvenience,
An energy-absorbing bag provided on the door can protect the door from an external impact applied to the occupant's waist as well as the upper body of an occupant sitting in a seat arranged close to the door. Accordingly, the transition from the contracted state to the inflated state causes a part of the occupant's clothes, etc., which has entered the space formed between the door and the seat, to be removed from the space. If it is made possible, the energy absorbing bag takes a relatively large inflated state interposed between the door and the portion extending from the shoulder to the waist, which is the portion of the occupant projecting in the vehicle width direction. Is required, and there is a problem that the transition from the contracted state to the expanded state is not performed quickly.

In view of the above, the present invention provides a method for absorbing energy between a vehicle body side and an occupant seated inside the vehicle body side when a relatively large impact is applied to the vehicle body side from the outside. In order for the bag to be interposed in an inflated state and to absorb impact energy by the energy absorbing bag, a space formed between the side of the vehicle body and a seat disposed close to the side of the vehicle body in the vehicle cabin. Even when an impact such as a side collision is applied to the side of the vehicle body in a state where an object such as a part of the clothes of the occupant sitting on the seat has entered, the energy absorbing bag is inflated thereby, The fact that an object such as a part of the occupant's clothes is restrained between the side of the vehicle body and the seat that has been deformed into a state of protruding toward the passenger compartment due to an impact may change from the contracted state of the energy absorbing bag to the expanded state. Migration to Without incurring not performed fast situation, it adapted to be avoided, and to provide an energy absorbing device of the vehicle body side portion.

(Means for Solving the Problems) In order to achieve the above-described object, the energy absorbing device for the vehicle body side according to the present invention moves from the cabin side portion of the vehicle body side to the vehicle body side in the upward expansion direction. A first energy absorbing bag that inflates above an armrest protruding toward the seat and is interposed between a shoulder portion of an occupant seated on the seat and a vehicle body side portion; A first inflator attached to the first energy absorbing bag and in an operative state for inflating the first energy absorbing bag, and inflating below the armrest in an upward inflation direction and seating on the seat described above; A second energy absorbing bag capable of obtaining a state of being interposed between the waist portion of the occupant and the side of the vehicle body;
A second energy-absorbing bag attached to the second energy-absorbing bag and placed in an operative condition to inflate the second energy-absorbing bag
An inflator, an impact sensor for detecting an external impact applied to the side of the vehicle body, and an inflator control unit for the first and second inflators, wherein the inflator control unit outputs an impact detection output signal obtained from the impact sensor. In response to the above, each of the first and second inflators is actuated to cause the first energy absorbing bag in the contracted state to assume a state in which it expands above the armrest, and the first energy in the contracted state to be inflated. The absorbent bag is configured to be in a state of expanding below the armrest.

Further, the energy absorbing device on the side of the vehicle body according to the present invention includes:
Specifically, a bag storage portion for storing the contracted second energy absorbing bag is provided between a side sill forming a lower portion of the vehicle body side portion and a seat disposed close to the vehicle body side portion. The second energy-absorbing bag is located in the lower part of the cabin between which the second energy-absorbing bag is inflated upward from a bag storage portion provided for the second energy-absorbing bag. A bag storage portion in which one energy absorbing bag is stored is formed by an armrest,
The first energy absorbing bag is inflated upward from the armrest.

(Operation) In the energy absorbing device for the vehicle body side according to the present invention having the above-described configuration, when an external shock is applied to the vehicle body side, a shock detection output obtained from the shock sensor at that time. The first and second inflators are respectively activated by the inflator control unit which is activated in response to the signal, so that the first energy absorbing bag is inflated above the armrest in the upward inflation direction. At the same time, the second energy-absorbing bag is inflated below the armrest in the upward inflation direction. As a result, the first and second energy absorbing bags are placed in an inflated state positioned with the armrest interposed therebetween, and the occupant sitting on the seat arranged close to the side of the vehicle body can move the occupant between the shoulder and the vehicle body side. A state in which the first energy absorbing bag placed in an inflated state is interposed between the first energy absorbing bag and the second energy absorbing bag placed in an inflated state between the waist and the side of the vehicle body. Put in.

In this way, the airbag expands above the armrest in the upward expansion direction and is interposed between the side of the vehicle body and the shoulder of the occupant, whereby an external impact is applied to the occupant's upper body. A first energy-absorbing bag for protecting from the side of the vehicle body, and inflated below the armrest with an upward inflation direction to be interposed between the side of the vehicle body and the waist of the occupant; Each of the second energy absorbing bags, which protects the waist of the vehicle from the side of the vehicle body to which an external impact has been applied, expands upward in comparison with the expansion force toward the occupant during the transition from the contracted state to the expanded state. Power is great. Therefore, each of the first and second energy absorbing bags can be quickly changed from the contracted state to the inflated state while suppressing a situation where a relatively large inflation force is applied to the occupant. Is done. As a result, when an external impact is applied to the vehicle body side, the protection of the occupant's upper body and waist from the vehicle body side to which the external impact is applied expands above the armrest. A first energy absorbing bag placed,
In addition, the second energy absorbing bag placed in an inflated state below the armrest allows the occupant to perform the operation quickly and reliably while suppressing the inflation force.

In addition, the second energy absorbing bag, which is inflated below the armrest and thereby interposed between the waist of the occupant and the side of the vehicle body, provides an object in the space between the side of the vehicle body and the seat. When a shock is applied to the side of the vehicle body from the outside in the presence of the vehicle, the transition from the contracted state to the expanded state is performed by moving the object in the space between the vehicle body side and the seat into the space. It is said that it is done while excluding outside. As a result, for example, under the condition that a part of the occupant's clothes sitting on the seat enters the space formed between the side of the vehicle body and the seat, an impact due to a collision or the like on the side of the vehicle body may occur. Even if it is added, a part of the occupant's clothes is restrained between the side of the vehicle body and the seat, which has been deformed into a state protruding toward the passenger compartment by the impact, and the occupant receives the impact. Etc., where it is difficult to move from the side of the vehicle body to the center of the cabin, and an undesired impact is caused by the first energy absorbing bag that is inflated above the armrest. Is avoided.

(Embodiment) FIG. 2 shows a cabin portion of a vehicle to which an example of a vehicle body side energy absorbing device according to the present invention is applied.

In the vehicle compartment shown in FIG. 2, a driver's seat side door 3 that forms one of the left and right vehicle body side portions, and
Armrests 6 and 7 are provided on the passenger compartment side of the passenger seat side door 4 forming the other of the left and right vehicle body side portions so as to protrude toward the driver seat 8 and the passenger seat 9, respectively. Have been. The driver's seat side door 3 is configured to include a door panel 11 and a door glass 12, as shown in FIG.
The door panel 11 is a door outer panel arranged outside the vehicle.
13 and a door inner panel 14 arranged on the passenger compartment side. The armrest 6 is fixed to the door inner panel 14 on the vehicle cabin side, and the door trim is
15 is attached, armrest 6 is door trim
Part of 15 is covered by 15R. Also door glass 1
Reference numeral 2 is disposed between the door outer panel 13 and the door inner panel 14 so as to be vertically movable by a lifting mechanism such as a window regulator.

When the occupant M is seated on the driver's seat 8 as shown by a chain line in FIG.
Are located between the shoulder and the waist. A first energy absorbing bag 18 folded and contracted is stored in the armrest 6, and a first inflator 19 attached to the first energy absorbing bag 18 is provided. The armrest 6 forms a bag storage section. Further, between the door glass 12 and the door outer panel 13, there is provided an impact sensor 20 for detecting an external impact applied to the right vehicle body side including the driver's seat side door 3.

A second energy absorbing bag 22 folded and contracted is provided at a position in a vehicle compartment portion between the side sill 21 forming the portion below the driver's seat side door 3 and the driver's seat 8 in the vehicle body. A bag storage section 24 is provided which stores and stores a second inflator 23 attached to the second energy absorbing bag 22. Further, an inflator control unit 26 electrically connected to the first and second inflators 19 and 23 and the shock sensor 20 is disposed in a console box 25 provided in the front of a central portion in the passenger compartment. I have. When the shock detection output signal from the shock sensor 20 is supplied, the inflator control unit 26 responds to the first inflator 19 in response thereto.
And a driving signal for the second inflator 23, and the driving signals for the first and second inflators 19 and 23 are formed.
To each other.

On the other hand, the passenger side door 4 also has the same configuration as the driver side door 3, and the armrest 7 is fixed to the door inner panel and is covered by a part of the door trim. Stores a first energy absorbing bag folded and contracted, a first inflator attached to the first energy absorbing bag, and the armrest 7 also has a bag storing portion. It is supposed to form. Also,
Inside the passenger side door 4, an impact sensor 27 for detecting an external impact applied to the side of the left vehicle body including the passenger side door 4 is provided. Further, a side sill 28 and a passenger seat 9 that form a portion of the vehicle body below the passenger side door 4 are provided.
A second energy absorbing bag that is folded and contracted is stored in a position in the vehicle interior part between the second energy absorbing bag and a second inflator attached to the second energy absorbing bag. A bag storage unit 29 is provided. The first inflator disposed in the armrest 7, the second inflator disposed in the bag storage section 29, and the impact sensor 27 provided in the passenger side door 4 are also inflators. The inflator control unit 26 is electrically connected to the control unit 26. When the shock detection output signal from the shock sensor 27 is supplied, the inflator control unit 26 responds to the first inflator and the bag disposed in the armrest 7. A drive signal for each of the second inflators arranged in the storage unit 29 is formed, and these signals are respectively applied to the first inflator arranged in the armrest 7 and the second inflator arranged in the bag storage unit 29. Send out.

The first in the armrest 6 provided on the driver side door 3
Energy absorbing bag 18 and the first inflator 19, the second energy absorbing bag 22 and the second
The inflator 23, the impact sensor 20 arranged in the driver's seat side door 3, and the inflator control unit 26 arranged in the console box 25 constitute an impact energy absorbing system on the right side of the vehicle body. When a relatively large external impact due to a side collision or the like is applied to the right side of the vehicle including the driver's seat side door 3, an object such as a part of the clothes of the occupant seated in the driver's seat 8 is moved to the driver's seat side door. The function of absorbing the impact energy and protecting the occupant sitting in the driver's seat 8 is prevented so that the occupant is not inconvenienced by being restrained between the driver's seat 8 and the driver's seat 8. Similarly, the first energy absorbing bag and the first inflator in the armrest 7 provided on the passenger side door 4, the second energy absorbing bag and the second inflator in the bag storage portion 29, and the passenger seat The impact sensor 27 and the inflator control unit 26 disposed in the side door 4 constitute an impact energy absorbing system on the left side of the vehicle body. When a relatively large external impact is applied to the passenger seat 9, an object such as a part of a passenger's clothes sitting on the passenger seat 9 is restrained between the passenger seat side door 4 and the passenger seat 9. Thus, the occupant does not cause any inconvenience, thereby absorbing the impact energy, and has a function of protecting the occupant seated in the passenger seat 9. Hereinafter, the shock energy absorbing system on the right side of the vehicle body will be described, and the description of the shock energy absorbing system on the side of the left vehicle body will be omitted.

As shown in FIGS. 3A and 3B, the armrest 6
A support member 6A bolted to a door inner panel 14 forming the driver's seat side door 3 is formed so as to be covered by a part 15R of the door trim 15. As shown in FIG. 3B, the support member 6A has an opening 6B formed in an upper portion, and a part 15R of the door trim 15 that covers the support member 6A has an opening 6A formed in the support member 6A. It has a closing part 15a for closing. A closing portion 15a in a portion 15R of the door trim 15 is formed at a portion close to the door inner panel 14 and extends in the vehicle longitudinal direction with a hinge portion 30 and a hinge portion 30.
A part 15 of the door trim 15 is surrounded by an inner surface groove 31 formed so as to extend in a
It is separated from other parts in R, and the inner surface groove 31
Is a portion that is broken by a relatively small tensile force.

First inflator 19 accommodated in armrest 6
Is fixed to the support member 6A of the armrest 6, and the first energy absorbing bag 18 stored in a contracted state folded in the armrest 6 is disposed above the first inflator 19, Part 15R of door trim 15
At a position facing the closed portion 15a. The inside of the first inflator 19 is divided into two chambers by a partition wall member 34 provided with a through-hole, and one chamber of the first inflator 19 has an igniter 35,
A heater 36 for igniting the igniting agent 35 and a gas generating agent 37 which is burned by igniting the igniting agent 35 and generates a large amount of nitrogen gas are contained therein. The chamber is provided with a plurality of filter portions 38 in an upper portion thereof. The plurality of filter sections 38 provided in the first inflator 19 are provided with a plurality of gas inlet sections provided in a lower portion of the first energy absorbing bag 18 which is folded and arranged above the first inflator 19.
The nitrogen gas generated in one of the two chambers separated by the partition wall member 34 in the first inflator 19 is connected to the partition wall member 34 through a through hole provided in the partition wall member 34. It is led to the other of the two chambers separated by the member 34, from which a plurality of filter units are provided.
After passing through 38, the gas is guided to the inside of the first energy absorbing bag 18 through a plurality of gas inlets 39. The first inflator 19 and the igniter 3 stored in the armrest 6
5. The operation of the heater 36 and the gas generating agent 37 is controlled by the inflator control unit 26 to form a bag inflation means for inflating the first energy absorbing bag 18.

As shown in FIG. 4, the bag storage portion 24 has a case member 41 which accommodates the second energy absorbing bag 22 and the second inflator 23 and is bolted to the floor portion 40 of the vehicle body. The case member 41 has a top plate 41
The case member 41 is surrounded by a hinge portion formed in a portion adjacent to the side sill 21 and extending in the front-rear direction of the vehicle body and an inner surface groove portion 42 formed to extend in a U-shape with the hinge portion. The inner groove 42 is a portion that is broken by a relatively small tensile force.

Second inflator 23 housed in case member 41
Is fixed to the floor section 40, and the case member
The second energy absorbing bag 22 housed in a contracted state folded in 41 is disposed above the second inflator 23, and takes a position facing the top plate portion 41a of the case member 41. ing. The inside of the second inflator 23 is divided into two chambers by a partition wall member 43 provided with a through hole, and an ignition agent 44 and an ignition agent 44 are ignited in one chamber of the second inflator 23. The heater 45 to be ignited, and the ignition agent 45 is ignited and ignited,
A gas generating agent 46 for generating a large amount of nitrogen gas is accommodated, and the other chamber of the second inflator 23 is provided with a plurality of filter portions 47 in an upper portion thereof. The plurality of filter portions 47 provided on the second inflator 23 are provided with a plurality of gas inlet portions 48 provided on the lower portion of the second energy absorbing bag 22 which is folded and arranged above the second inflator 23. And the nitrogen gas generated in one of the two chambers partitioned by the partition wall member 43 in the second inflator 23 passes through a through hole provided in the partition wall member 43.
After being guided to the other of the two chambers partitioned by 43 and passing therethrough through a plurality of filter sections 47, it is guided into the second energy absorbing bag 22 through a plurality of gas inlet ports 48. The second inflator 23, the igniting agent 44, the heater 45, and the gas generating agent 46 housed in the bag storage portion 24 are:
The operation is controlled by the inflator control unit 26 and the second
Forming a bag inflation means for inflating the energy absorption bag 22 of FIG.

Under such circumstances, when a relatively large impact due to a side collision or the like is applied to the right vehicle body side including the driver's seat side door 3, as shown in FIG. An impact detection output signal SA is transmitted from the arranged impact sensor 20 and supplied to the inflator control unit 26. In response to the shock detection output signal SA from the shock sensor 20, the inflator control unit 26 controls the drive signal DI1 for activating the heater 36 in the first inflator 19 in the armrest 6 and the second inflator 23 in the bag storage unit 24. Heater in
A drive signal DI2 for actuating the drive signal 45 is formed, and the drive signal DI1 is supplied to the heater 36 of the first inflator 19 and the drive signal DI2 is supplied to the heater 45 of the second inflator 23. At that time, the inflator control unit 26
Supplies the drive signal DI2 to the heater 45 in the second inflator 23 prior to the supply of the drive signal DI1 to the heater 36 in the first inflator 19, and therefore, first supplies the drive signal DI2 to the heater 45 in the second inflator 23. The drive signal DI2 is supplied, and thereafter, the drive signal DI1 is supplied to the heater 36 of the first inflator 19.

The heater 45 in the second inflator 23 in the bag storage unit 24 to which the drive signal DI2 is supplied instantaneously generates heat,
The igniter 44 in the second inflator 23 is ignited.
Then, the ignition of the igniting agent 44 causes the gas generating agent 46 contained in the second inflator 23 to burn, thereby generating a large amount of nitrogen gas. The generated large amount of nitrogen gas is , And quickly flows into the second energy absorbing bag 22 through the gas inlet port 48, whereby the second energy absorbing bag 22 is rapidly inflated. At this time, as shown by the dashed line in FIG. 1, the second energy absorbing bag 22 rotates the hinge portion by breaking the top plate portion 41a of the case member 41 by breaking the inner surface groove portion 42 when inflating. It is rotated upward as a center of movement, and thereby expands upward through an opening formed in the upper part of the case member 41, and the upward expansion is regulated by the armrest 6, and expands below the armrest 6. Put in. Since the second energy absorbing bag 22 that is inflated below the armrest 6 does not need to take a relatively large inflated state, the state of inflating below the armrest 6 can be quickly changed. As shown by the dashed line in FIG. 1, the driver is quickly interposed between the driver's seat side door 3 and the waist of the occupant M seated in the driver's seat 8, and a relatively large impact due to a side collision or the like is obtained. The waist of the occupant M is reliably protected from the right side of the vehicle body including the driver's seat side door 3, and the space between the driver's seat side and the driver's seat 8 and the armrest 6 is secured. Shall be filled.

In this way, when an impact due to a side collision or the like is applied to the right vehicle body side portion including the driver's seat side door 3, the driver's seat side door 3 is located above the bag storage portion 24 on the passenger compartment side. For example, even if a part CL of the occupant M seated in the driver's seat 8 enters the space between the driver's seat 8 and the armrest 6 as shown by a dashed line in FIG. Of the occupant M that has entered the space between the driver's seat side door 3 and the space between the driver's seat 8 and the armrest 6 due to the upward inflation of the energy absorbing bag 22 from the bag storage portion 24. Part of CL is the first
As shown by the two-dot chain line in the figure, the driver's seat side door 3 is excluded from the space between the driver's seat 8 and the armrest 6 to the outside. That is, when an impact due to a side collision or the like is applied to the right vehicle body side including the driver's seat side door 3, the driver's seat side door 3 above the bag storage unit 24, the driver's seat 8 and the armrest 6 If there is an object such as a part of the occupant's clothes in the space between the objects,
The second energy absorbing bag 22 which expands upward from the bag storage portion 24 is removed from the space between the driver's seat 8 and the driver's seat 8 and the armrest 6 outside the driver's seat side door 3. The inflated second energy absorbing bag 22 is brought into a state in which the nitrogen gas filled therein passes through the gas vent holes provided in the second energy absorbing bag 22.

As described above, for example, when an impact due to a side collision or the like is applied to the right body side portion including the driver's seat side door 3, the portion between the driver's seat side door 3, the driver's seat 8 and the armrest 6 is provided. A part CL of the occupant M seated in the driver's seat 8 that has entered the space of the driver's seat 8 is occupied by the second energy absorbing bag 22 inflated upward from the bag storage part 24 to the cabin of the driver's seat side door 3. By being removed from the space between the side portion, the driver's seat 8 and the armrest 6 to the outside, the driver's seat side door 3 is moved toward the passenger compartment by an impact applied to the right side of the vehicle body by a side collision or the like. Even if the occupant M is deformed so as to protrude, a part of the clothes CL of the occupant M is restrained between the deformed driver's seat side door 3 and the driver's seat 8, whereby the occupant M's driver's seat is closed. Occurs when moving from the door 3 to the center of the vehicle compartment State is avoided.

Next, after the drive signal DI2 is supplied to the heater 45 in the second inflator 23, the heater 36 in the first inflator 19 to which the drive signal DI1 is supplied instantaneously generates heat, and the igniter 35 in the first inflator 19 is heated. To ignite. The ignition of the igniter 35 causes the first inflator
The gas generating agent 37 accommodated in 19 is burned to generate a large amount of nitrogen gas, and the generated large amount of nitrogen gas passes through a filter section 38 provided in the first inflator 19. Then, the gas quickly flows into the first energy absorbing bag 18 through the gas inlet portion 39, thereby rapidly expanding the first energy absorbing bag 18. At that time, when the first energy absorbing bag 18 is inflated, the top plate portion 15a of the part 15R of the door trim 15 that is to close the opening 6B provided in the support member 6A forming the armrest 6, As shown by a dashed line in FIG. 1, by breaking the inner groove 31, the inner groove 31 is rotated upward about the hinge 30 as a rotation center, and upward through the opening 6B provided in the support member 6A. It expands and is in a state of expanding above the armrest 6.
The first energy absorbing bag 18 placed in an inflated state above the armrest 6 does not need to take a relatively large inflated state, so that the state inflated above the armrest 6 is quickly increased. As shown by the dashed line in FIG. 1, the driver is quickly interposed between the driver's seat side door 3 and the shoulder of the occupant M seated in the driver's seat 8, and is relatively large due to a side collision or the like. The passenger M from the right side of the vehicle body including the driver's seat side door 3 to which the shock was applied
It is to be sure to protect the upper body.

In this way, the inflated large energy absorbing bag 18
Is inserted between the driver's seat side door 3 and the shoulder of the occupant M seated in the driver's seat 8, the second energy absorbing bag 22 is already inflated and Even if the driver's seat side door 3 is deformed so as to protrude toward the passenger compartment due to an impact applied by a collision or the like, the driver's seat side door 3 and the driver's seat where a part CL of the clothing of the occupant M is deformed. 8 so as not to impede the movement of the occupant M from the driver's seat side door 3 side to the center of the vehicle compartment. M comes into contact with the inflated first energy absorbing bag 18 in a state where it can move from the driver's seat side door 3 side to the center portion side of the vehicle compartment. Therefore,
The condition in which the occupant M is undesirably impacted by the inflated first energy absorbing bag 18 does not occur. The inflated first energy absorbing bag 18 is brought into a state in which the nitrogen gas filled therein passes through the gas vent holes provided therein.

As described above, facing upward from the bag storage section 24,
The space between the driver's seat 8 and the armrest 6 between the driver's seat 8 and the armrest 6 is filled by being expanded below the armrest 6 provided on the driver's seat side door 3. The second energy absorbing bag 22 and the armrest 6 provided on the driver's seat side door 3 are directed upward and are inflated above the armrest 6, so that the driver's seat side door 3 and the driver's seat 8 Each of the first energy absorbing bags 18 to be interposed between the shoulder of the seated occupant M and the first energy absorbing bag 18 does not need to be in a relatively large inflated state. The second energy absorbing bag 22 and the first energy absorbing bag 18 sufficiently absorb the impact energy due to the impact applied to the portion from the shoulder portion to the waist portion of the occupant M by the side impact on the right vehicle body side. So that the effect of the impact exerted on the occupant M is brought into effectively reduced.

(Effects of the Invention) As is apparent from the above description, according to the energy absorbing device for the vehicle body side according to the present invention, when a relatively large impact is applied to the vehicle body side from outside, the vehicle body side energy absorbing device is connected to the vehicle body side. A first energy-absorbing bag, which is quickly placed in an inflated state above the armrest, is interposed between a shoulder portion of an occupant seated in a vehicle interior inside a vehicle body side portion and a vehicle body side portion and an occupant. And a second energy absorbing bag, which is independent of the first energy absorbing bag and is quickly placed in an inflated state below the armrest, is also interposed between the second energy absorbing bag and the lower back of the armrest. By the first and second energy absorbing bags, the portion from the upper body to the waist of the occupant is reliably protected from the side of the vehicle body to which an external impact is applied. However, when an external impact is applied to the vehicle body side in a situation where an object is present in the space between the vehicle body side portion and the seat, the second energy absorbing bag changes from the contracted state to the expanded state. Due to the transition, an object positioned in the space between the vehicle body side and the seat is removed out of the space between the vehicle body side and the seat. With the part of the clothing of the occupant seated in the seat in a state in which the first energy absorbing bag is inflated, the first energy absorbing bag is inflated. In this case, a part of the occupant's clothing is also restrained between the side of the vehicle body and the seat, which are deformed by the impact so as to protrude toward the passenger compartment, and the occupant loses the vehicle body when the impact is applied. It is difficult to move from the side to the center of the cabin, It is possible to avoid a situation where inconvenience such as will receive a first undesired impact by energy absorbing bag which is inflated into the vehicle compartment side from the part.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an example of a body side energy absorbing device according to the present invention, and FIG. 2 is a diagram showing a vehicle compartment to which an example of a vehicle body side energy absorbing device according to the present invention is applied. FIG. 3 is a schematic perspective view, FIGS. 3A and 3B and FIG. 4 are cross-sectional views showing an essential part of an example of a vehicle body side energy absorbing device according to the present invention, and FIG. 5 is a vehicle body side energy according to the present invention. FIG. 3 is a block diagram illustrating an electrical connection in an example of the absorbing device. In the figure, 3 is a driver's seat side door, 4 is a passenger's seat side door, 6 and 7
Is an armrest, 18 is a first energy absorbing bag, 19 is a first inflator, 23 is a second inflator, 20 and
27 is an impact sensor, 22 is a second energy absorbing bag, 24 is a bag storage unit, 26 is an inflator control unit, 35 and
44 is an igniter, 36 and 45 are heaters, 37 and 46 are gas generating agents, 38 and 47 are filter units, and 39 and 48 are gas inlets.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 1-1117957 (JP, U) JP 47-43142 (JP, Y1) JP 51-31467 (JP, Y2)

Claims (4)

(57) [Scope of request for utility model registration] An occupant seated on the seat inflates in an upward expansion direction above an armrest protruding from a cabin-side portion of a vehicle body side toward a seat disposed near the vehicle body side. A first energy absorbing bag capable of obtaining a state of being interposed between the shoulder portion of the first energy absorbing bag and the side portion of the vehicle body, and an operation of inflating the first energy absorbing bag attached to the first energy absorbing bag. A first inflator in a state, and a second inflatable state in which the first inflator expands below the armrest in an upward expansion direction and is interposed between a waist portion of an occupant seated on the seat and the vehicle body side portion.
An energy absorbing bag, a second inflator attached to the second energy absorbing bag and placed in an operating state for inflating the second energy absorbing bag, and an impact externally applied to the vehicle body side portion And a shock detection output signal obtained from the shock sensor.
Activating each of the first and second inflators to cause the contracted state of the first energy absorbing bag to assume a state of inflating above the armrest, and the contracted state of the second energy absorbing bag. An inflator control unit for causing the absorption bag to assume an inflated state below the armrest; 2. A bag storage portion for storing a contracted second energy absorbing bag, a side sill forming a lower portion of a vehicle body side portion, and a seat disposed close to the vehicle body side portion. The vehicle body according to claim 1, wherein the second energy absorbing bag is provided in a lower portion of the vehicle cabin between the bag storage portion and the second energy absorbing bag inflates upward from the bag storage portion. Side energy absorber. 3. A back storage portion for storing the contracted first energy absorbing bag is formed by an armrest, and the first energy absorbing bag expands upward from the armrest. The energy absorbing device for a vehicle body side portion according to claim 1 or 2, wherein: 4. An inflator control unit that activates a first inflator subsequent to activation of a second inflator, causing the second energy absorbing bag to assume an inflated state prior to the first energy absorbing bag. The energy absorbing device for a vehicle body side part according to claim 1, 2 or 3, wherein the energy is absorbed.