JP2019031136A - Vehicle seat - Google Patents

Abstract

An object of the present invention is to improve the workability of attaching an air bag module provided between a seating portion and a vehicle body.
A vehicle seat includes a base wire provided between a seating portion and a vehicle body, an airbag module including an airbag, and a holding member that holds the airbag module. The holding member 1 has a U-shaped storage section 2 that stores the airbag module, and a fitting section 3A that is fitted to the base wire from behind.
[Selection] Figure 2

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat including an airbag device.

  A vehicle seat in which an airbag device is provided between a vehicle body and a seating portion is known (for example, Patent Document 1 below).

JP 2009-40328 A

In the above prior art, the airbag device has an inflator and an airbag as main components. The inflator and the airbag are fixed with bolts in a space between the vehicle body and the seat portion via an L-shaped inner cover.
However, the installation of the airbag device is complicated and the workability is low.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat that can improve the workability of attaching an airbag module provided between a seating portion and a vehicle body.

  According to the vehicle seat according to the present invention, a base wire provided between a seating portion and a vehicle body, an airbag module including an airbag, and a holding member that holds the airbag module are provided. The holding member is solved by having a U-shaped storage section that stores the airbag module, and a fitting section that fits into the base wire from the rear.

According to the vehicle seat described above, the holding member that holds the airbag module can be fitted from the rear to the base wire provided between the seating portion and the vehicle body.
Thereby, the workability | operativity of attachment of the airbag module provided between a seating part and a vehicle body can be improved.
Moreover, since an airbag module can be attached from back, there is no restriction | limiting in the shape of the front side of a vehicle seat. Therefore, the freedom degree of the shape of the front side of a vehicle seat can be improved.

In the above vehicle seat, the housing portion has an opening portion that opens in the direction of inflation of the airbag, the holding member has a flange portion outside the opening portion, and the fitting portion has It is preferable that the flange portion is provided.
By carrying out like this, the holding member can guide the inflation direction of the airbag. Further, the attachment of the holding member to the base wire can be realized with a simple structure.

Said vehicle seat WHEREIN: The said base wire has the 1st wire which comprises external shape, and the 2nd wire which is attached to the said 1st wire and has a defined shape part, The said fitting part is It is preferable that the second wire is fitted.
By carrying out like this, a common holding member can be attached irrespective of the external shape of a base wire. That is, a common holding member and airbag module can be used regardless of the shape between the seating portion and the vehicle body.

In the above vehicle seat, it is preferable that the housing portion has a bottom portion and a side wall portion rising from the bottom portion, and the airbag module is attached to the bottom portion.
By carrying out like this, the attachment to the accommodating part of an airbag module can be stabilized.

In the above vehicle seat, the airbag module includes an inflator for injecting gas into the airbag, the inflator includes a stud bolt, and the stud bolt is inserted into a hole formed in the bottom portion. In this state, it is preferable to be fixed to the bottom portion.
By doing so, the workability of attaching the airbag module to the accommodating portion can be improved.

The vehicle seat includes: a seat pad integrated with the base wire; and a skin covering the seat pad, the skin having a breaking portion that breaks when the airbag is deployed, and the airbag The module is preferably arranged so as to face the fracture portion.
By doing so, it becomes easy to inflate the airbag outward from the fractured portion of the skin.

In the above vehicle seat, it is preferable that the vehicle seat is provided with a webbing that is stitched to the breaking portion and guides the deployment direction of the airbag.
This makes it easier to deploy the airbag toward the cut portion of the skin.

ADVANTAGE OF THE INVENTION According to this invention, the workability | operativity of attachment of the airbag module provided between a seating part and a vehicle body can be improved.
According to the present invention, the attachment of the holding member to the base wire can be realized with a simple structure.
According to the present invention, a common holding member can be attached regardless of the outer shape of the base wire.
According to the present invention, the attachment of the airbag module to the housing portion can be stabilized.
ADVANTAGE OF THE INVENTION According to this invention, the workability | operativity of attachment to the accommodating part of an airbag module can be improved.
According to the present invention, it becomes easy to inflate the airbag outward from the cut portion of the skin in accordance with the operation of the airbag module.
According to the present invention, the airbag can be easily deployed toward the fractured portion of the skin.

It is a perspective view which shows the whole structure of the vehicle seat. It is II-II sectional drawing of FIG. It is a perspective view of the state where the holding member was attached to the base wire. It is a side view of the state which attached the holding member to the base wire. It is a perspective view of a holding member.

Hereinafter, a vehicle seat S according to an embodiment of the present invention (hereinafter, this embodiment) will be described with reference to FIGS. 1 to 5.
The embodiment described below is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. That is, the shape, dimensions, arrangement, and the like of the members described below can be changed and improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof.

  In the following description, the “front-rear direction” means the front-rear direction when viewed from the seated person of the vehicle seat S, and is the direction that coincides with the traveling direction of the vehicle. The “seat width direction” means the lateral width direction of the vehicle seat S and coincides with the left-right direction when viewed from the seated person of the vehicle seat S. The “height direction” means the height direction of the vehicle seat S, and coincides with the vertical direction when the vehicle seat is viewed from the front.

First, the outline of each of FIGS. 1 to 5 will be described.
FIG. 1 is a perspective view showing the overall configuration of the vehicle seat S. FIG.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a perspective view of the base wire W with the holding member 1 attached thereto.
4 is a side view of the base wire W with the holding member 1 attached thereto.
FIG. 5 is a perspective view of the holding member 1.

As shown in FIG. 1, in the present embodiment, the vehicle seat S is a rear seat of a vehicle such as an automobile. The vehicle seat S includes a seat portion S1 on which an occupant sits, and a bolster B provided between the seat portion S1 and the vehicle body C.
The seating portion S1 is a seat portion provided with a headrest, for example.
The bolster B is a portion constituting the contour of the side portion of the vehicle seat S, and is provided between the seating portion S1 and the vehicle body C. In the present embodiment, the bolster B is provided at each of the left and right end portions of the seating portion S1, but since the left and right bolsters B have the same configuration, the right bolster B will be described below.

As shown in FIG. 1, an airbag module 20 is provided inside the bolster B.
The airbag module 20 is a device that protects an occupant by absorbing an impact at the time of a vehicle collision. The airbag module 20 may be a caseless airbag module without a module case, or may have a module case, and is not particularly limited.

  In the present embodiment, the airbag module 20 includes an airbag 21 and an inflator 22, and both the airbag 21 and the inflator 22 are held by being wrapped in a wrap material.

  The inflator 22 is a device that generates gas in response to an input signal from a harness (not shown). Specifically, when a sensor provided in the vehicle detects a collision, an operation signal is input to the inflator 22 via the harness. Thereby, the inflator 22 generates gas and injects gas into the airbag 21 to inflate it. Thus, at the time of a vehicle collision, the airbag 21 tears the fractured portion B1 of the bolster B and bulges out from the fractured portion B1.

As shown in FIG. 2, the outer shape of the bolster B is configured by stretching the skin 50 on the base wire W integrally formed with the seat pad 40.
The seat pad 40 may be formed using, for example, a urethane resin.

  As shown in FIG. 2, the seat pad 40 includes a first pad 40A disposed on the left side and a second pad 40B disposed on the right side. The skin 50 includes a first skin portion 50A that covers the first pad 40A and a second skin portion 50B that covers the second pad 40B.

The first skin portion 50A and the second skin portion 50B are stitched together with the first force cloth 6A and the second force cloth 6B to constitute a fracture portion B1.
The first webbing 6A and the second webbing 6B are members that guide the deployment direction of the airbag 21, and the rear ends of the first webbing 6A and the second webbing 6B are fixed to the base wire W. .

  As shown in FIGS. 3 and 4, the base wire W includes a first wire Wa <b> 1 to a first wire Wa <b> 9 that form an outer shape, a second wire Wb <b> 1 for attaching the holding member 1, and a second wire Wb <b> 2. .

  The shapes of the first wire Wa1 to the first wire Wa9 are configured in accordance with the shape of the bolster B. That is, the shapes of the first wire Wa1 to the first wire Wa9 are different for each vehicle type, for example.

On the other hand, the second wire Wb <b> 1 and the second wire Wb <b> 2 have a prescribed shape portion for attaching the holding member 1. In other words, even if the shape of the bolster B is changed, the bolster B is configured to have a prescribed attached portion to which the common holding member 1 can be attached.
For example, the second wire Wb1 and the second wire Wb2 are provided at a position where the distance in the sheet width direction between the second wire Wb1 and the second wire Wb2 becomes a predetermined value. Further, the thicknesses of the second wire Wb1 and the second wire Wb2 are set to a prescribed thickness to which the holding member 1 can be attached.

Next, the configuration of the holding member 1 will be described.
As shown in FIGS. 2 and 5, the holding member 1 is a bottomed housing that can accommodate the airbag module 20 therein. For example, the holding member 1 is made of a resin material.

Specifically, as shown in FIGS. 2 and 5, the holding member 1 has a housing portion 2 and a flange portion 3.
The accommodating portion 2 is a U-shaped shape portion that accommodates the airbag module 20. The accommodating part 2 has an opening 2A that opens in the direction in which the airbag 21 bulges. That is, the accommodating part 2 has the bottom part 2B and the side wall part 2C which stands | starts up from the bottom part 2B, and the front side facing the bottom part 2B is opened.

  A mounting hole 2D is formed in the bottom 2B. Then, the stud bolt 22A attached to the inflator 22 of the airbag module 20 is fastened using the fastener 5 such as a nut in a state where the stud bolt 22A is inserted into the attachment hole 2D. As a result, the airbag module 20 is fixed to the bottom 2B of the housing part 2. That is, the airbag module 20 is held by the holding member 1 in a state where the airbag module 20 is accommodated in the accommodating portion 2.

  The holding member 1 is provided with a flange portion 3 connected to the front end of the side wall portion 2 </ b> C of the housing portion 2. The flange portion 3 has a substantially square shape surrounding the outside of the housing portion 2, and a plurality of fitting portions 3 </ b> A are formed on the left and right. The fitting portion 3A is a portion that fits from the rear to the second wire Wb1 and the second wire Wb2 of the base wire W.

Specifically, in the fitting portion 3A, a groove that fits with the second wire Wb1 (or the second wire Wb2) is formed.
When attaching the holding member 1 to the base wire W, the left and right fitting portions 3A are aligned with the second wire Wb1 and the second wire Wb2 of the base wire W, and the holding member 1 is moved from the rear toward the front. Push in. Then, the second wire Wb1 and the second wire Wb2 and the left and right fitting portions 3A are fitted, and the holding member 1 is fixed to the base wire W.

  Further, at the rear of the bolster B, a vehicle tire house is provided. And the rear part of the holding member 1 is supported by the tire house. Therefore, when the inflator 22 of the airbag module 20 is activated and the airbag 21 is inflated, the holding member 1 is supported by the tire house, so that the airbag 21 is directed forward without being lowered rearward. Can be expanded.

[Other Embodiments]
The present invention is not limited to the above embodiment.
For example, in the above embodiment, the vehicle seat S is a rear seat, but it may be a front seat or a second row seat of three rows.

  In the above-described embodiment, two second wires are provided. However, there may be one second wire or three or more second wires.

  Further, the shape of the fitting portion 3A is not limited to the groove, and may be a U-shaped protrusion or the like.

[Effects produced by the vehicle seat S]
According to the vehicle seat S, the holding member 1 that holds the airbag module 20 can be fitted to the base wire W provided between the seating portion S1 and the vehicle body C from behind.
Thereby, the workability | operativity of attachment of the airbag module 20 provided between seating part S1 and the vehicle body C can be improved.
Moreover, since the airbag module 20 can be attached from the back, there is no restriction | limiting in the shape of the front side of the vehicle seat S (bolster B). Therefore, the freedom degree of the shape of the front side of the vehicle seat S (bolster B) can be improved.

In the vehicle seat S, the accommodating portion 2 has an opening 2A that opens in the bulging direction of the airbag 21, the holding member 1 has a flange portion outside the opening 2A, and the fitting portion 3A has The flange portion 3 is provided.
By doing so, the holding member 1 can guide the bulging direction of the airbag 21. Moreover, the attachment of the holding member 1 to the base wire W can be realized with a simple structure.

In the vehicle seat S, the base wire W includes a first wire (first wire Wa1 to first wire Wa9) constituting an outer shape and a second wire (first wire attached to the first wire and having a prescribed shape portion). 2 wires Wb1 and second wires Wb2). Then, the fitting portion 3A is fitted to the second wire.
In this way, the common holding member 1 can be attached regardless of the outer shape of the base wire W. That is, regardless of the shape between the seating portion S1 and the vehicle body C, the standardized holding member 1 and airbag module 20 can be used.

In the vehicle seat S, the housing part 2 has a bottom part 2B and a side wall part 2C rising from the bottom part 2B, and the airbag module 20 is attached to the bottom part 2B.
By carrying out like this, the attachment to the accommodating part 2 of the airbag module 20 can be stabilized.

In the vehicle seat S, the airbag module 20 has an inflator for injecting gas into the airbag 21, the inflator 22 has a stud bolt 22A, and the stud bolt 22A is a mounting hole formed in the bottom 2B. It is fixed to the bottom 2B while being inserted through 2D.
By doing so, the workability of attaching the airbag module 20 to the housing part 2 can be improved.

The vehicle seat S includes a seat pad 40 that is integrated with the base wire W, and a skin 50 that covers the seat pad 40, and the skin 50 has a breaking portion B <b> 1 that is broken when the airbag 21 is deployed. The module 20 is disposed so as to face the fracture portion B1.
By doing so, the airbag 21 can be easily inflated outward from the fractured portion B1 of the skin 50.

The vehicle seat S includes a first webbing 6A and a second webbing 6B that are sewn to the breaking portion B1 and guide the deployment direction of the airbag 21.
By doing so, the airbag 21 can be easily deployed toward the fractured portion B1 of the skin 50.

B Bolster B1 Breaking part C Car body S Vehicle seat S1 Seating part W Base wire Wa1 First wire Wa2 First wire Wa3 First wire Wa4 First wire Wa5 First wire Wa6 First wire Wa7 First wire Wa8 First wire Wa9 1st wire Wb1 2nd wire Wb2 2nd wire 1 Holding member 2 Accommodating part 2A Opening part 2B Bottom part 2C Side wall part 2D Mounting hole 3 Flange part 3A Fitting part 5 Fastening tool 6A 1st force cloth 6B 2nd force cloth 20 Airbag Module 21 Airbag 22 Inflator 22A Stud Bolt 40 Seat Pad 40A First Pad Part 40B Second Pad Part 50 Skin 50A First Skin Part 50B Second Skin Part

Claims (7)

A base wire provided between the seating portion and the vehicle body;
An airbag module comprising an airbag;
A holding member for holding the airbag module,
The holding member is
A U-shaped storage section for storing the airbag module;
A vehicle seat, comprising: a fitting portion that is fitted to the base wire from behind. The accommodating portion has an opening portion that opens in the bulging direction of the airbag,
The holding member has a flange portion outside the opening,
The vehicle seat according to claim 1, wherein the fitting portion is provided in the flange portion. The base wire is
A first wire constituting the outer shape;
A second wire attached to the first wire and having a defined shape portion;
The vehicle seat according to claim 1, wherein the fitting portion is fitted to the second wire. The accommodating portion is
The bottom,
A side wall that rises from the bottom, and
The vehicle seat according to claim 1, wherein the airbag module is attached to the bottom portion. The airbag module has an inflator for injecting gas into the airbag,
The inflator has a stud bolt,
The vehicle seat according to claim 4, wherein the stud bolt is fixed to the bottom portion while being inserted into a hole formed in the bottom portion. A seat pad integrated with the base wire;
An epidermis covering the seat pad,
The skin has a rupture portion that breaks when the airbag is deployed,
The vehicle seat according to claim 5, wherein the airbag module is disposed to face the fracture portion. The vehicular seat according to claim 6, further comprising a webbing that is sewn to the breaking portion and guides a deployment direction of the airbag.

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