JPH10100848A - Energy absorbing structure for vehicle side part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop an air bag to the outside of a seat within a shorter time by providing an expansion limiting means for limiting a portion of a surface material expanded before a weak part is opened by the air bag developing pressure of an air bag unit within a range corresponding to the air bag unit. SOLUTION: An air bag unit 21 disposed in the side supporting section 3a of a seat back 3 includes an inflator 23 and an air bag 24 housed in a module can 22. In this case, a pad recessed part 15a is formed in the pad 15 of the side supporting section 3a and, in the seat surface side of a surface material 19 corresponding to this pad recessed part 15a, a parting line 19b is formed along the pad recessed part 15a. A vertical tension wire 45 is provided in the pad 15 in the pad recessed part 15a, one end of surface fixing cloth 46 is attached and fixed to a seat inner surface side corresponding to the pad recessed part 15a, this surface fixing cloth 46 is passed through a slit 15b, and its other end is attached and fixed to the vertical tension wire 45.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle side energy absorbing structure, and more particularly to a technical field in which an airbag unit is provided in a seat provided with a skin material.

[0002]

2. Description of the Related Art Conventionally, it is well known that an airbag unit is provided on a steering wheel to ensure occupant safety in the event of a frontal collision of a vehicle body. On the other hand, in recent years, for example,
As shown in Japanese Patent No. 4491, an airbag unit is disposed on a side portion in a seat, and when the vehicle collides with a vehicle body side portion, the airbag is deployed on the side of the occupant. It has been proposed to protect the occupant by absorbing the energy of the collision.

[0003]

When an airbag unit is provided in a seat as in the above proposed example, the outermost surface of the seat is usually covered with a skin material. A fragile portion that is easily opened when an airbag deployment pressure is received is provided on a skin material corresponding to the bag unit, and the airbag is deployed outside the seat from the opened fragile portion.

[0004] However, since a material having a high elongation is usually used as a skin material so as not to cause wrinkles on the surface,
When the skin material is subjected to the airbag deployment pressure, the skin material is first expanded to the outside of the seat, and then the fragile portion is opened. Moreover, since the skin material is extended over substantially the entire area of the seat back or substantially the entire area of the seat cushion, the amount of extension of the skin material becomes extremely large. Therefore, the opening of the fragile portion of the skin material is delayed, and there is room for improvement to deploy the airbag to the outside of the seat faster.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to improve the structure of the skin material so that the skin material is opened until the fragile portion is opened by the airbag deployment pressure. An object of the present invention is to reduce the amount of expansion so that the time until the opening of the airbag is shortened as much as possible so that the airbag can be deployed outside the seat in a shorter time.

[0006]

In order to achieve the above object, according to the present invention, the portion where the skin material extends before the fragile portion is opened by the airbag deployment pressure is limited to a range corresponding to the airbag unit. Extension restricting means is provided.

More specifically, according to the first aspect of the present invention, the airbag unit includes an airbag unit disposed in a predetermined direction in a vicinity of a side portion of the seat on which the skin material is covered, and A vulnerable portion that is opened by receiving an airbag deployment pressure is provided on a skin material corresponding to the unit, and an energy absorbing structure of a vehicle side portion configured such that the airbag is deployed to the outside of the seat from the opened vulnerable portion. Is assumed.

The airbag unit further includes an expansion restricting means for restricting a portion where the skin material expands before the fragile portion is opened by an airbag deployment pressure of the airbag unit to a range corresponding to the airbag unit. I do.

As a result, the area where the skin material extends is limited to a narrow range corresponding to the airbag unit. Therefore, even if the extension rate of the skin material is high, the amount of expansion is small, and the expansion amount is reduced by the airbag deployment pressure. The opening action of the fragile part is promoted. As a result, the time until the fragile portion is opened is shortened, and the airbag is smoothly deployed from the opened fragile portion to the outside of the seat. Therefore, the deployment of the airbag to the outside of the seat can be performed in a shorter time.

According to a second aspect of the present invention, in the first aspect of the invention, the extension restricting means has a fixing member for fixing the skin material near the fragile portion to the seat frame.

According to the present invention, the skin material near the fragile portion can be fixed to the seat frame, which is a rigid member, by the fixing member, so that the portion where the skin material extends can be reliably limited to the range near the fragile portion. . Therefore, the airbag can be deployed to the outside of the seat more quickly with a simple configuration.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the extension restricting means has a fixing member for fixing the skin material near the fragile portion to the pulling wire provided in the pad. .

[0013] This makes it possible for the tension wire in the pad to hardly move in the direction perpendicular to its longitudinal direction even if a force is applied in the direction, so that the stretched portion of the skin material is surely weakened. It can be limited to the area near the part. Therefore, the same function and effect as the second aspect can be obtained.

According to a fourth aspect of the present invention, in the second or third aspect, the fixing member is attached to the skin material on both sides of the weak portion with the weak portion interposed therebetween.

[0015] By doing so, the opening action of the fragile portion by the airbag deployment pressure can be further effectively promoted. Therefore, the operation and effect of the first aspect can be further enhanced.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the fixing member is provided on the seat surface side and the counter seat surface side of the side support portion of the seat, and the fixing member on the seat surface side is provided on the side support portion. It is assumed that it is attached to the skin material of the pad recess of the base.

According to the present invention, a pad recess is usually provided in the base of the side support portion and a parting line is formed on the surface of the skin material, but the fixing member on the seat surface side is provided in the existing pad recess. Since it is provided, even if a fixing member, a pulling wire, or the like is provided on the seat surface side where appearance becomes a problem, a new parting line or the like does not occur. Therefore, good appearance can be maintained.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the airbag unit is disposed on a side portion of the seat on the side door side close to the seat.

Thus, the airbag can be easily deployed between the occupant and the side door close to the occupant due to the side collision, and the occupant can be prevented from colliding with the side door. Therefore, further safety of the occupant can be ensured in the event of a side collision.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the airbag unit is disposed in the seatback such that the airbag is deployed substantially in front of the seatback.

In this manner, the side portion of the seat back is a side support portion bulging forward for supporting the occupant in the left-right direction, and the airbag unit is disposed in a relatively large space inside the side support portion. can do. Therefore, the airbag unit can be accommodated in the seat without impairing the sitting comfort of the occupant.

According to an eighth aspect of the present invention, in the sixth aspect of the invention, the airbag unit is disposed in the seat cushion such that the airbag is deployed substantially above the seat cushion.

[0023] Thus, the side portion of the seat cushion is also a side support portion bulging upward for supporting the occupant in the left-right direction, so that the airbag unit can be arranged in a relatively large space inside the seat cushion. . Therefore, the same function and effect as the seventh aspect of the invention can be obtained.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 to 4 show a front left seat 1 of an automobile in a vehicle side energy absorbing structure according to Embodiment 1 of the present invention. This seat 1 has a seat cushion 2, a seat back 3, and a headrest 4. Sliders 7, 7 extending in the front-rear direction are provided below the left and right ends of the seat cushion 2, respectively.
The front and rear positions of the seat 1 can be adjusted by being engaged with left and right slide rails 8 fixed to the floor via 0 and 10. In addition, seat cushion 2
At the rear, a knuckle member 9 is provided rotatably about a rotation shaft 11 extending in the left-right direction, and the seat back 3 is rotatable around the rotation shaft 11 with respect to the seat cushion 2 via the knuckle member 9. And the angle of the seat back 3 can be adjusted.

The headrest 4 is attached to the seatback 3 by inserting frames 5, 5 projecting from the lower end surface thereof into two holes formed in the upper end surface of the seatback 3.

On the outer peripheral portion of the rear portion in the seat back 3,
A frame-shaped seat back frame 13 (seat frame) having upper and lower portions and left and right sides made of a steel pipe material is provided, and each frame projecting from a lower end surface of the headrest 4 is provided above the seat back frame 13. 5, two headrest adjusting members 14, which can adjust the vertical position of the headrest 4 by fitting with
14 is attached and fixed.

Between the left and right sides of the seat back frame 13, a plurality of wire frames 1 extending in the left and right direction, which are made of a wire having a smaller diameter than the seat back frame 13, are provided.
8, 18, ... are provided. Both ends of each of the wire frames 18 are fixed to the front sides of the left and right sides of the seat back frame 13 by welding.

Pads 15 are provided on the front side of the respective wire frames 18, and the pads 15 are supported by the respective wire frames 18 so that the occupant does not escape backward when leaning on the seat back 3. The pad 15 is supported by the seat back frame 13 such that an end of the pad 15 extends backward from the outside of the seat back frame 13. The outer surface of the pad 15 is covered with a skin material 19 made of cloth.
That is, the outermost material of the sheet 1 is covered with the skin material 19.

The left and right ends of the seat cushion 2 are provided with side support portions 2a, 2a swelling upward, and the left and right ends of the seat back 3 are provided with side support portions 3a, 3a swelling forward. It plays a role in supporting the user not to move left and right.

In the seat back 3, an airbag unit 21 is disposed near the side of the side door close to the seat 1, that is, in the left side support portion 3a. The airbag unit 21 has a module can 22 having a substantially U-shaped cross section.
Inside, a cylindrical can-shaped inflator 23 containing an ignition portion and an explosive is housed on the back side, and a folded airbag 24 is housed on the opening side. The above inflator 2
Although not shown, an ignition signal (not shown) is supplied from an acceleration sensor for detecting a side collision to the left side of the automobile, and the ignition signal ignites the explosive according to the ignition signal. The airbag 24 is inflated and deployed by a large amount of gas generated by combustion.

The airbag unit 21 is disposed so that its longitudinal direction substantially coincides with the vertical direction of the seat back 3, and two sets of upper and lower bolts 27, 27 and nuts 28, 28 are provided on the side surface of the module can 22. At mounting member 26
Is fastened to one end. The other end of the attachment member 26 is attached and fixed to the seat back frame 13 by welding. Thus, the airbag unit 21 is fixed to the seat back frame 13 via the attachment member 26. The airbag unit 21 is disposed such that the opening direction of the module can 22, that is, the direction in which the airbag 24 is deployed, is inclined leftward with respect to the front.

The pad 15 receives the deployment pressure of the airbag 24 at the portion corresponding to the airbag unit 21 on the inner surface of the pad 15 in the seat, that is, substantially in front of the opening of the module can 22 in the airbag unit 21. A notch groove 33 is provided as a starting point for breaking, and this notch groove 33 is made more fragile than other portions. The cut grooves 33 are provided at substantially the same height in the vertical direction of the module can 22 of the airbag unit 21 and the seat back 3 and over substantially the same length. When the airbag 24 is deployed, the pad 15 starts to break from the cut groove 33 due to the deployment pressure, and a portion on the extension of the cut groove 33 is broken.

A fragile portion 19a is provided on the skin material 19 corresponding to the airbag unit 21, that is, on the skin material 19 substantially on the extension of the cut groove 33, so as to be opened by receiving the deployment pressure of the airbag 24. ing. That is, as shown in FIGS. 1 and 4, the fragile portion 19 a is provided at a position having substantially the same height in the vertical direction of the cut groove portion 33 and the seat back 3, and over a substantially same length, and the skin material 19 a is provided. Is closed by sewing, and when the deployment pressure of the airbag 24 is received, the closed fragile portion 19a is broken open, and air is released from the opened weak portion 19a and the broken portion of the pad 15. The bag 24 is deployed outside the seat back 3 and between the occupant of the seat 1 and the left side door.

The pad 15 at the base of the left and right side support portions 3a, 3a on the seating surface side (front side) of the seat back 3 has pad recesses 15a, 15a extending from the upper end to the lower end of the seat back 3, respectively. A parting line 19b is formed along the pad dent 15a on the sheet surface side of the skin material 19 corresponding to each of the pad dents 15a. This left side support part 3
A vertical pulling wire 45 extending in the up-down direction is provided in the pad 15 in the pad recess 15a of FIG. One end of a first skin fixing cloth 46 is attached and fixed to the inner surface of the sheet corresponding to the pad recess 15a in the skin material 19, and the first skin fixing cloth 46 is
The other end is attached and fixed to the vertical pulling wire 45 through a slit 15b provided between the bottom of the pad recess 15a and the location of the vertical pulling wire 45 in FIG. The first skin fixing cloth 46 has, for example, a woven structure, so that the elongation rate is extremely lower than that of the skin material 19. This first skin fixing cloth 46 allows pad depression 1
The skin material 5a is pulled in the direction of the longitudinal tension wire 45. It should be noted that even if a force is applied in a direction perpendicular to the longitudinal direction, the longitudinal pulling wire 45 hardly moves in that direction.

The skin material 19 is provided with a fastener 49 extending in the up-down direction of the seat back 3 on the side opposite to the seating surface (rear side) of the left side support portion 3a, and the skin material 19 is removed by removing the fastener 49. The seat can be partially separated into a front portion and a rear portion. One end of a second skin fixing cloth 47 similar to the first skin fixing cloth 46 is mounted on the inner side of the seat at the end where the fastener 49 is mounted on the front side of the fastener 49 of the skin material 19. Fixed. The second skin fixing cloth 47 extends between the rear portion of the sheet of the skin material 19 and the pad 15 toward the center of the sheet, and is bent substantially forward where the pad 15 disappears. Is fixedly attached to a skin fixing wire 51 extending vertically at the rear position of the airbag unit 21. The skin fixing wire 51 is attached and fixed to the plurality of wire frames 18, 18,..., Whereby the end of the skin material 19 on the front side of the seat to which the fastener 49 is attached is attached to the seat back frame 13. It will be fixed.

The first and second skin fixing cloths 46, 47
The fixing of the skin material 19 in the expansion limiting means for limiting the portion where the skin material 19 extends before the fragile portion 19 a is opened by the deployment pressure of the airbag 24 of the airbag unit 21 to the range corresponding to the airbag unit 21. And a fixing member. In other words, the extension restricting means applies the longitudinal tension wire 45 to the skin material 19 near the fragile portion 19a.
And the first and second skin fixing cloths 46 and 47 as fixing members for fixing to the seat back frame 13. Then, the first and second skin fixing cloths 46, 4
Reference numeral 7 denotes the fragile portion 19a of the skin material 19 with the fragile portion 19a interposed therebetween.
aAttached to the skin material 19 on both sides, the portion where the skin material 19 extends before the fragile portion 19a is opened by the deployment pressure of the airbag 24 is limited so as to be within the range from substantially the entire seat back 3 to the left side support portion 3a. doing.

The operation when the airbag 24 is deployed due to a side collision in the vehicle side energy absorbing structure having the above configuration will be described. First, when the acceleration sensor detects a side impact on the left side of the vehicle, a deployment signal is supplied to the ignition unit of the inflator 23, and the ignition unit is ignited. As a result, the explosive in the inflator 23 burns at a high speed, and a large amount of gas is supplied to the airbag 24.
Tries to expand and expand. And this airbag 24
Attempts to deploy substantially forward in the opening direction of the module can 22, contacts the pad inner surface of the pad 15 and pushes the pad 15 from the seat inner side to the outer side by the developing pressure. For this reason, the pad 15 starts to break from the weak portion, that is, the cut groove 33, and the pad 15 is broken substantially along the extension of the cut groove 33.

Next, before the fragile portion 19a of the skin material 19 is broken open, the skin material 19 near the fragile portion 19a is extended outward of the seat by receiving the deployment pressure of the airbag 24 before the opening. The opening is delayed for a certain time. However, in the first embodiment, the first and second skin fixing cloths 46 and 47 having a low elongation rate are used to cover the skin material 1 near the weak portion 19a.
9 is fixed to the longitudinal tension wire 45 and the seat back frame 13 on both sides of the fragile portion 19a, and the extending portion of the skin material 19 is limited to the range of the left side support portion 3a. Even if it is 19, the amount of extension of the skin material 19 is small, and the time until opening is short. Then, the airbag 24 is deployed to the outside front of the seat back 3 from the opened weakened portion 19a and the broken portion of the pad 15 to prevent an occupant sitting in the seat 1 from colliding with the left side door. Can be.

Since the fastener 49 is provided at the portion of the skin material 19 where the second skin fixing cloth 47 is attached and fixed, when the skin material 19 is mounted on the seat back 3, the fastener 49 is used. The second skin fixing cloth 47 can be easily attached and fixed to the skin fixing wire 51 in a state in which the skin material 19 is removed, and then the fastening of the fastener 49 completes the covering of the skin material 19. Further, since the fastener 49 is provided on the rear surface of the seat back 3, there is almost no problem in appearance.

Therefore, in the first embodiment, the portion where the skin material 19 extends before the fragile portion 19a is opened by the deployment pressure of the airbag 24 of the airbag unit 21 is moved to the left side support portion 3a corresponding to the airbag unit 21. Is provided, the opening action of the fragile portion 19a due to the deployment pressure of the airbag 24 is promoted, the time required for the fragile portion 19a to open is reduced, and the opened fragile portion 19a is opened. From the portion 19a, the airbag 24 is smoothly deployed to the outside of the seat back 3. Therefore, the deployment of the airbag 24 to the outside of the seat back 3 can be performed in a shorter time.

The extension restricting means includes first and second fixing members for fixing the skin material 19 near the fragile portion 19a to the longitudinal tension wire 45 and the seat back frame 13.
The first and second skin fixing cloths 46 and 47 have the fragile portions 19a with the first and second skin fixing cloths 46 and 47 interposed therebetween.
a Since it is attached to the skin material 19 on both sides, the portion where the skin material 19 extends can be reliably restricted to the range near the weak portion 19a, and the opening action of the weak portion 19a due to the deployment pressure of the airbag 24 can be reduced. It can be more effectively promoted. Therefore, the airbag 24 has a simple configuration.
Can be deployed to the outside of the seat back 3 more quickly.

Further, the first and second skin fixing cloths 46, 4
7 are provided on the seat surface side and the counter seat surface side of the left side support portion 3a of the seat back 3, respectively, and the first skin fixing cloth 46 on the seat surface side is the skin of the pad recess 15a at the base of the left side support portion 3a. Since it is attached to the material 19, even if the first skin fixing cloth 46 and the longitudinal pulling wire 45 are provided on the seat surface side where appearance is a problem, a new parting line is not generated, and the existing parting line is not formed. Line 19
The part b can be used effectively. Therefore, good appearance can be maintained.

Further, since the airbag unit 21 is disposed in the left side support portion 3a of the seat back 3, the airbag 24 can be easily formed between the occupant and the left side door by a side collision to the left side of the vehicle. The vehicle can be reliably prevented from colliding with the left side door. In addition, a relatively large space can be provided in the side support portion 3a of the seat back 3. Therefore, the airbag unit 21 can be accommodated in the seat 1 without hindering the sitting comfort of the occupant, and the occupant can be further made safer in a side collision.

In the first embodiment, one end of the first skin fixing cloth 46 is connected to the pad 15 in the pad recess 15a.
A skin in which one end of a second skin fixing cloth 47 is mounted and fixed instead of fixing one end of the first skin fixing cloth 46 to the vertical pulling wire 45. You may make it attach and fix to the fixing wire 51. That is, the slit 15b extending from the bottom of the pad recess 15a to the location of the longitudinal pulling wire 45 is further extended to the rear of the seat back 3 to penetrate the pad 15, and the first skin fixing cloth 46 is passed through the slit 15b. 3. It may be extended to the rear skin fixing wire 51, and one end of the first skin fixing cloth 46 may be attached and fixed to the skin fixing wire 51. By doing so, the skin material 19 in the vicinity of the fragile portion 19a and the first and second skin fixing cloths 46 and 47 are closed-loop, and the fixing of the skin material 19 can be performed more effectively. Moreover, pad 15
Is separated into the seat center side and the left side support portion 3a by the first skin fixing cloth 46,
When the airbag 24 is deployed, the pad 15 at the center of the seat
Is restrained from being moved to the left side by being pulled by the pad 15 on the side support portion 3a side, and the portion where the pad 15 extends can also be limited to the range of the left side support portion 3a. Therefore, the deployability of the airbag 24 can be further stabilized.

(Embodiment 2) FIG. 5 shows Embodiment 2 of the present invention (in the following embodiments, the same parts as those of FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. Only the different parts will be described), and the fixing member of the extension restricting means for restricting the extension of the skin material 19 to a range corresponding to the airbag unit 21 is different from that of the first embodiment, and the fragile portion 19a The nearby skin material 19 is fixed to the pad 15 by two sets of hook-and-loop fasteners 53, 53.

That is, in the second embodiment, the fixing members are two sets of hook-and-loop fasteners 53 for fixing the skin material 19 near the fragile portion 19a to the surface of the pad 15.
The hook-and-loop fasteners 53, 53 serve as the fragile portions 1
It is provided in the vicinity of both poles of the fragile portion 19a so as to extend in the up-down direction, respectively, across the weak portion 9a. Each surface fastener 53 is provided between the inner surface of the skin material 19 and the pad 15.
Pad 1 of anchor 54 having a substantially E-shaped cross section embedded therein
The skin material 19 can be fixed to the surface of the pad 15 by being attached to a portion located on the surface of the pad 15. Thus, the portion where the skin material 19 extends before the fragile portion 19a is opened by the deployment pressure of the airbag 24 is the double-sided fastener 53, 5 including the fragile portion 19a.
It will be limited to a range between three.

Therefore, in the second embodiment, the skin material 19 can be more easily covered on the seat back 3 than in the first embodiment, and the hook-and-loop fasteners 53 can be easily provided very close to the fragile portion 19a. Thus, the range in which the skin material 19 extends can be further limited than in the first embodiment. Therefore, deployment of the airbag 24 to the outside of the seat 1 can be further accelerated with a simple configuration.

In each of the above embodiments, the airbag unit 21 is connected to the left side support portion 3a of the seat back 3.
However, the present invention can also be applied to a case where the seat back 3 is disposed in the right side support portion 3a of the seat back 3, so that collision between occupants can be prevented.
Then, the airbag unit 21 is placed in the side support portion 2a of the seat cushion 2 with its module can 22.
When the airbag 24 is arranged so as to be deployed substantially above the seat cushion 2 such that the opening of the airbag 24 is directed substantially upward, similarly to the case where the airbag 24 is arranged in the side support portion 3a of the seatback 3. The present invention can be applied. Further, also in a case where side support portions are provided on both left and right sides of the headrest 4, and a small airbag unit is disposed on the side support portions so that the airbag is deployed substantially forward, thereby protecting the occupant's head and the like. The present invention can be applied.

[0049]

As described above, according to the first aspect of the present invention, the airbag unit is provided near the side portion of the seat on which the skin material is mounted, and the skin material corresponding to the airbag unit is provided. The airbag unit is provided with a fragile portion that is opened by receiving an airbag deployment pressure, and an energy absorbing structure of a vehicle side portion configured so that the airbag is deployed outside the seat from the opened fragile portion. By providing an expansion restricting means for restricting a portion where the skin material expands before the fragile portion is opened by the airbag deployment pressure to a range corresponding to the airbag unit, early deployment of the airbag to the outside of the seat can be achieved. Can be achieved.

According to the second aspect of the present invention, the extension restricting means has a fixing member for fixing the skin material near the fragile portion to the seat frame. Can be further accelerated.

According to the third aspect of the present invention, the extension restricting means has a fixing member for fixing the skin material near the weak portion to the pulling wire 45 provided in the pad. The same operation and effect as the invention can be obtained.

According to the fourth aspect of the present invention, since the fixing member is attached to the skin material on both sides of the fragile portion with the fragile portion interposed therebetween, the function and effect of the first aspect of the present invention can be further promoted.

According to the invention of claim 5, the fixing member is provided on the seat surface side and the counter seat surface side of the side support portion of the seat,
By attaching the fixing member on the seat surface side to the skin material of the pad recess of the side support portion base, the appearance can be improved.

According to the sixth aspect of the present invention, the airbag unit is disposed on the side of the seat on the side door side close to the seat, so that the safety of the occupant in a side collision can be further improved. it can.

According to the seventh aspect of the present invention, the airbag unit is disposed in the seatback so that the airbag is deployed substantially in front of the seatback, so that the occupant can maintain good sitting comfort. In addition, the airbag unit can be accommodated in the seat.

According to the eighth aspect of the present invention, the airbag unit is disposed in the seat cushion such that the airbag is deployed substantially above the seat cushion, so that the same operation as the seventh aspect of the present invention is achieved. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line II of FIG. 2;

FIG. 2 is a perspective view showing a seat in a vehicle side energy absorbing structure according to Embodiment 1 of the present invention.

FIG. 3 is a side view showing a left portion of the seat.

FIG. 4 is a perspective view showing a fragile portion of the skin material and a parting line in the seat back.

FIG. 5 is a diagram corresponding to FIG. 1 in a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 3 Seat back 3a Side support part 13 Seat back frame (seat frame) 15 Pad 15a Pad dent part 19 Skin material 19a Weak part 21 Airbag unit 24 Airbag 45 Vertical tensile wire 46 First skin fixing cloth (stretch) Fixing member for restricting means) 47 Second skin fixing cloth (fixing member for extension restricting means) 53 Surface fastener (fixing member for extension restricting means)

Claims (8)

[Claims] An airbag unit disposed in a predetermined direction in a vicinity of a side portion of a seat on which a skin material is covered, and an airbag is provided on a skin material corresponding to the airbag unit. A vulnerable portion that is opened by receiving the deployment pressure is provided, and the airbag deploys the airbag to the outside of the seat from the opened vulnerable portion. An energy absorbing structure for a vehicle side portion, comprising: an extension restricting means for restricting a portion where the skin material expands before the fragile portion is opened by pressure to a range corresponding to the airbag unit. 2. The vehicle side energy absorbing structure according to claim 1, wherein the extension restricting means includes a fixing member for fixing a skin material near the weakened portion to the seat frame. Energy absorption structure. 3. The energy absorbing structure according to claim 1, wherein the extension restricting means has a fixing member for fixing a skin material near the fragile portion to a tension wire provided in the pad. An energy absorbing structure on the side of a vehicle, characterized in that: 4. The vehicle side energy absorbing structure according to claim 2, wherein the fixing member is attached to the skin material on both sides of the weak portion with the weak portion interposed therebetween. Energy absorption structure. 5. The vehicle side energy absorbing structure according to claim 4, wherein the fixing member is provided on the seat surface side and the counter seat surface side of the side support portion of the seat, and the fixing member on the seat surface side is: An energy absorbing structure for a vehicle side portion, wherein the energy absorbing structure is attached to a skin material of a pad recess portion of the side support portion base. 6. The energy absorbing structure for a vehicle side according to claim 1, wherein the airbag unit is disposed on a side portion of the seat on a side door side close to the seat. Characteristic energy absorption structure on the side of the vehicle. 7. The energy absorbing structure for a vehicle side portion according to claim 6, wherein the airbag unit is disposed in the seatback such that the airbag is deployed substantially forward of the seatback. Characteristic energy absorption structure on the side of the vehicle. 8. The energy absorbing structure for a vehicle side portion according to claim 6, wherein the airbag unit is provided in the seat cushion such that the airbag is deployed substantially above the seat cushion. Characteristic energy absorption structure on the side of the vehicle.