JP6425136B2 - Vehicle interior materials - Google Patents

Description

  The present invention relates to a vehicle interior material.

  Conventionally, an air bag apparatus is known which is incorporated in a vehicle seat and deploys an air bag body so as to cover the head of an occupant when an impact is input to the vehicle, thereby restraining the head of the occupant. ing.

  For example, Patent Document 1 describes an air bag apparatus provided with an air bag (corresponding to an "air bag body" in the claims) provided so as to expand above the occupant's head when inflated. . Further, in Patent Document 2, an air bag for the left and right head and a sub air bag for the head are incorporated in a seat on which an occupant sits, and the head air bag is the left and right ends of the headrest of the seat. The head airbag bulging forward from the head and joined to each other at the front of the occupant's head, while the head sub-airbag is an air that bulges forward from the center of the headrest of the seat and joins to the head airbag A bag apparatus is described.

JP 2008-74248 A JP, 2013-18378, A

  By the way, the airbag apparatus which restrains a passenger | crew's head needs to expand | deploy an air bag body correctly between a passenger | crew's head and a ceiling (roof lining). However, the distance between the occupant's head and the ceiling varies depending on the occupant's physical size. For this reason, regardless of the physical constitution of the occupant, it is desirable to deploy the air bag body more accurately.

  Then, this invention provides the interior material for vehicles which can unfold an air bag body correctly.

In order to solve the above problems, the interior material for a vehicle according to the present invention is formed at a position corresponding to the head of the occupant on the roof lining disposed above the vehicle seat on which the occupant sits. And a guide unit with which the air bag body comes in contact when the air bag body built in the headrest of the vehicle seat expands upward from the head of the occupant. The air bag body may be guided such that the air bag body deploys from above the head of the occupant to the front of the head of the occupant.
According to the present invention, when the air bag body is expanded upward from the head of the occupant, the air bag body is provided with a guide portion in contact with the air bag body. The airbag body is deployed forward between the occupant's head and the roof lining and further forward than the occupant's head because the air bag body is guided from the upper side to the front of the occupant's head. Can. Therefore, it can be set as the interior material for vehicles which can deploy an air bag body correctly.

In the above-described vehicle interior material, it is preferable that the guide portion has a guide surface which inclines downward from the rear to the front.
According to the present invention, since the guide portion has the guide surface which inclines downward as it goes from the rear to the front, the head of the occupant can be brought into contact by bringing the air bag body deployed toward the guide into contact with the guide surface. The deployment direction of the air bag body can be directed diagonally downward and forward from above. Thus, the air bag body passing between the head of the occupant and the roof lining can be reliably deployed forward of the head of the occupant. Therefore, the air bag body can be deployed more accurately.

In the above-described vehicle interior material, it is preferable that the guide portion is formed so as to be capable of being displaced upward by contact with the air bag body.
According to the present invention, the guide portion is displaced upward by bringing the expanding air bag body into contact with the guide portion, so that a large distance between the head of the occupant and the roof lining can be secured. it can. Therefore, the air bag body can be smoothly passed between the head of the occupant and the roof lining. Therefore, the air bag body can be deployed more accurately.

In the above-described vehicle interior material, it is preferable that a groove portion be formed in the roof lining along a peripheral edge portion of the guide portion.
According to the present invention, since the groove is formed in the roof lining along the peripheral edge of the guide, the roof lining can be easily bent in the groove. Therefore, the guide can be displaced upward. Therefore, the guide portion which can be displaced upward can be easily formed.

In the above-described vehicle interior material, it is preferable that the guide portion be lower in rigidity than a portion of the roof lining other than the guide portion.
According to the present invention, since the guide portion is lower in rigidity than the portion of the roof lining other than the guide portion, the guide portion which can be displaced upward can be easily formed.

In the above-described vehicle interior material, an inclined member is disposed above the guide portion, and the inclined member faces the guide portion and has an inclined surface inclined downward from the rear toward the front. It is desirable to have.
According to the present invention, since the inclined member is disposed above the guide portion, the guide portion can be brought into contact with the inclined member by displacing the guide portion upward. At this time, since the sloped member faces the guide portion and has a sloped surface which slopes downward from the rear to the front, the guide portion contacts the sloped member so that the guide portion is formed on the sloped surface of the sloped member. It inclines downward as it goes from the rear to the front to follow. Therefore, the deployment direction of the air bag body in contact with the guide portion can be directed obliquely downward and forward. Thus, the air bag body passing between the head of the occupant and the roof lining can be reliably deployed forward of the head of the occupant. Therefore, the air bag body can be deployed more accurately.

  According to the present invention, when the air bag body is expanded upward from the head of the occupant, the air bag body is provided with a guide portion in contact with the air bag body. The airbag body is deployed forward between the occupant's head and the roof lining and further forward than the occupant's head because the air bag body is guided from the upper side to the front of the occupant's head. Can. Therefore, it can be set as the interior material for vehicles which can deploy an air bag body correctly.

It is a side view of a vehicular seat of a 1st embodiment. 1 is a cross-sectional view of a vehicle of a first embodiment. It is the perspective view which looked at A part of FIG. 1 from left front. 1 is a cross-sectional view of a vehicle of a first embodiment. 1 is a cross-sectional view of a vehicle of a first embodiment. 1 is a cross-sectional view of a vehicle of a first embodiment. It is sectional drawing of the vehicle of 2nd Embodiment. It is a top view of the roof lining of a 2nd embodiment. It is sectional drawing of the vehicle of 2nd Embodiment. It is sectional drawing of the vehicle of 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described based on the drawings.
First Embodiment
FIG. 1 is a side view of a vehicle seat provided in the vehicle of the first embodiment.
As shown in FIG. 1, the vehicle of the present embodiment includes a vehicle seat 1 (hereinafter simply referred to as “seat 1”) in which a passenger M is seated in a compartment R. The seat 1 includes a seat cushion 2 supporting the buttocks of the occupant M, a seat back 3 connected to the rear end of the seat cushion 2 to support the waist and back of the occupant M, and a neck and head of the occupant M And a headrest 4 for In the following description, the front, rear, upper, lower, left, and right directions are the same as the front, rear, upper, lower, left, or right directions in the vehicle unless otherwise indicated. There is. In the present embodiment, the driver's seat is described as an example of the seat 1. However, the seat 1 may be a passenger's seat or a rear seat. Moreover, in FIG. 1, illustration of a handle etc. is abbreviate | omitted.

  The seat cushion 2 includes a cushion frame 7, a cushion pad material (not shown), and a seat cover 26. The cushion frame 7 is formed in a rectangular frame shape. The cushion frame 7 has a pair of plate members 6 disposed on the left and right sides and extending along the longitudinal direction, and a pair of pipe members (not shown) disposed longitudinally and extending along the lateral direction. ing. The cushion frame 7 is, for example, slidably attached to the vehicle body floor via a seat rail (not shown). The cushion pad material is made of, for example, urethane foam, and is mounted on the upper surface of the cushion frame 7. The seat cover 26 is made of, for example, a synthetic fiber or leather, and covers the cushion frame 7 and the cushion pad material.

  The seat back 3 includes a seat frame 13, a seat pad material (not shown), and a seat cover 28. The seat frame 13 is formed in a rectangular frame shape. The seat frame 13 is disposed on the left and right sides, and includes a pair of side frame parts 14 extending along the vertical direction, an upper part disposed on the upper side, and an upper frame part 15 extending in the lateral direction. And a lower frame portion (not shown) extending along the The lower end portion of the seat frame 13 is connected to the rear end portion of the cushion frame 7 of the seat cushion 2. The seat pad material is made of, for example, urethane foam, as with the cushion pad material of the seat cushion 2, and is mounted on the front surface of the seat frame 13. The seat cover 28 is formed of, for example, synthetic fibers, leather, or the like, similarly to the seat cover 26 of the seat cushion 2, and covers the seat frame 13 and the seat pad material. The front surface of the seat back 3 is inclined rearward as it goes upward from the lower end. An upper end portion of the seat back 3 is a headrest 4.

FIG. 2 is an explanatory view of the vehicle according to the first embodiment, and is a cross-sectional view of the vehicle in a plane orthogonal to the lateral direction at the center of the seat in the lateral direction.
As shown in FIG. 2, the headrest 4 incorporates an air bag device 30 that restrains the head of the occupant M. The airbag device 30 includes an inflator 31 that generates high-pressure gas at the time of impact input, and an airbag bag 33 that is built in the headrest 4 and expands to cover the head of the occupant M by supplying gas from the inflator 31. And have. The air bag body 33 is housed in the retainer 37 together with the inflator 31 in a state of being folded in a predetermined shape.

  The retainer 37 is a plate-like member, and is curved in a U-shape opening upward when viewed in the left-right direction. The retainer 37 is fastened and fixed to a front portion of the seat frame 13 (the upper frame portion 15 in this embodiment) in the headrest 4 by a fastening member 16 such as a bolt.

  The inflator 31 is fastened and fixed to a front portion of the seat frame 13 in the headrest 4 by a fastening member 16 with the retainer 37 interposed therebetween. The inflator 31 is filled with a gas generating agent, and is configured to generate high pressure gas when an impact of a predetermined magnitude or more is input to the vehicle. The inflator 31 is provided with a gas injection hole (not shown). The high pressure gas generated by the inflator 31 is injected into the air bag body 33 through the gas injection holes.

  The air bag body 33 is formed in a bag shape. The proximal end 33 a (opening) of the air bag body 33 is connected to the inflator 31. The air bag body 33 is provided forward of the inflator 31 attached to the upper frame portion 15. The air bag body 33 is expanded and deployed by the high pressure gas injected from the gas injection holes of the inflator 31.

FIG. 3 is a perspective view of part A of FIG. 1 as viewed from the left front. In FIG. 3, the seat cover 28 and the webbing 41 to be described later are shown by a two-dot chain line, and the occupant M is not shown.
As shown in FIG. 3, at the position facing the upper opening of the retainer 37 in the seat cover 28 of the headrest 4, a seam made of a suture thread serving as the fracture boundary portion 29 is provided along the left-right direction. The fracture boundary part 29 is broken by the deployment pressure of the air bag body 33 when the air bag body 33 of the air bag device 30 is deployed.

  As shown in FIG. 2, the inflator 31 and the air bag body 33 are covered by the webbing 41 together with the retainer 37. The webbing 41 forms an unfolding path of the air bag body 33 toward the fracture boundary portion 29 of the seat cover 28 when the air bag body 33 unfolds. The force cloth 41 turns around the upper portion of the airbag bag body 33 folded from between the seat frame 13 and the retainer 37, and the lower side fabric 41A that turns around the lower portion of the retainer 37 from between the seat frame 13 and the retainer 37. And an upper strength cloth 41B. The front end edge of the lower webbing 41A is sewn to the lower opening edge at the fracture boundary 29 of the sheet skin 28. The front end edge of the upper elastic cloth 41 B is sewn to the upper open edge at the fracture boundary 29 of the sheet skin 28. The lower webbing 41A and the upper webbing 41B apply tension to both edges of the fracture boundary portion 29 of the seat cover 28 at the time of deployment of the air bag body 33 to promote fracture from the fracture boundary 29. It is a cloth member.

The vehicle according to the present embodiment includes a vehicle interior material 50 in a compartment R. The interior material 50 for a vehicle has a roof lining 51 disposed above the seat 1 and on the vehicle room R side of the roof 9 of the vehicle, and a regulating member 55 disposed between the roof 9 and the roof lining 51. .
The roof lining 51 is formed, for example, by attaching a woven fabric, a non-woven fabric, or the like to a surface (lower surface) of the thin plate made of a resin material on the vehicle room R side.

  At a position corresponding to the head of the occupant M in the roof lining 51, a guide portion 60 is provided. The guide portion 60 is formed by recessing the roof lining 51 upward in a U-shape as viewed in the left-right direction. The guide portion 60 has a guide surface 61 and an introduction surface 62. The guide surface 61 is provided at the front of the guide portion 60 as viewed in the left-right direction, and is inclined downward from the rear to the front. The introduction surface 62 is connected to the rear end portion of the guide surface 61 as viewed in the left-right direction, and is inclined downward from the front to the rear. The inclination angle of the introduction surface 62 with respect to the roof 9 is set to be larger than the inclination angle of the guide surface 61 with respect to the roof 9. The guide portion 60 is formed to be disposed right above the head of the occupant M seated at the regular position of the seat 1. The introduction surface 62 of the guide portion 60 is formed to be disposed immediately above the fracture boundary portion 29 of the sheet 1. The air bag body 33 contacts the guide portion 60 when deployed upward from the head of the occupant M.

  The restriction member 55 is formed in a block shape, for example, of a foamed resin such as urethane foam or expanded polystyrene. The restricting member 55 is attached to the lower surface of the roof 9 just above the guide surface 61 of the guide unit 60. The lower surface of the restriction member 55 is formed along the back surface of the guide surface 61 of the guide portion 60, and is an inclined surface 56 inclined downward from the rear to the front when viewed from the left-right direction.

Hereinafter, the operation of the vehicle interior material 50 of the present embodiment will be described. In addition, please refer to FIG. 1 to FIG. 3 for the reference numerals of the respective component parts of the vehicle in the following description.
4 to 6 are explanatory views of the interior material for a vehicle of the first embodiment, and are cross-sectional views of the vehicle in a plane orthogonal to the lateral direction at the center of the seat in the lateral direction. 4 to 6, the structure of the airbag device 30 in the seat 1 is simplified and illustrated.

  When an impact larger than a predetermined magnitude is input to the vehicle, the inflator 31 of the airbag device 30 generates high pressure gas. Then, the air bag body 33 of the air bag device 30 built in the headrest 4 is inflated inside the headrest 4. The inflated air bag body 33 breaks the fracture boundary portion 29 of the seat cover 28 and spreads upward.

  As shown in FIG. 4, the tip of the air bag body 33 deployed upward is directed diagonally upward along the introduction surface 62 of the guide portion 60 disposed immediately above the fracture boundary 29. And inflate into contact with the guide surface 61 disposed in front of the introduction surface 62. At this time, since the restriction member 55 is formed of a foamed resin, it cushions the deployment pressure of the air bag body 33 transmitted through the guide portion 60. The guide surface 61 is inclined downward from the rear to the front as viewed from the left and right. For this reason, as shown in FIG. 5, the front end of the air bag body 33 in contact with the guide surface 61 from the rear changes the deployment direction from the direction toward the front to the direction toward the lower front. Expand along 61

  Thereafter, as shown in FIG. 6, the tip of the air bag body 33 expands to the front of the head of the occupant M, and the air bag body 33 expands so as to cover the head of the occupant M. In this manner, the guide unit 60 guides the air bag body 33 such that the air bag body 33 expands from above the head of the occupant M toward the front of the head of the occupant M.

  As described above, the vehicle interior material 50 of the present embodiment is formed at a position corresponding to the head of the occupant M in the roof lining 51 and the roof lining 51 arranged above the seat 1. A guide portion 60 with which the air bag body 33 comes in contact when the air bag body 33 incorporated in the vehicle expands upward from the head of the occupant M, and the guide portion 60 is an air bag The air bag body 33 is guided such that the body 33 deploys from above the head of the occupant M toward the front of the head of the occupant M.

  According to this configuration, the air bag body 33 includes the guide portion 60 with which the air bag body 33 contacts when the air bag body 33 expands upward from the head of the occupant M, and the guide portion 60 The air bag body 33 is passed between the head of the occupant M and the roof lining 51 because the body 33 is guided to expand from the upper side of the occupant M to the front of the occupant M from above. It can be deployed forward of the head of the occupant M. Therefore, it can be set as the interior material 50 for vehicles which can unfold the airbag body 33 correctly.

  In addition, since the guide portion 60 has the guide surface 61 which inclines downward as it goes from the rear to the front, the airbag bag body 33 deployed toward the guide portion 60 is brought into contact with the guide surface 61. The deployment direction of the air bag body 33 can be directed obliquely downward and forward above the head. Thus, the air bag body 33 passing between the head of the occupant M and the roof lining 51 can be reliably deployed forward of the head of the occupant M. Therefore, the air bag body 33 can be deployed more accurately.

  Note that, in the present embodiment, the restriction member 55 is formed of a foamed resin, but is not limited to this. As a material which forms a limitation member, elastic materials, such as rubber, non-foaming resin, metal, etc. are applicable, for example. However, it is more preferable that the regulating member is formed of an elastic body such as a foamed resin or rubber, in that the expansion pressure of the air bag body 33 transmitted through the guide portion 60 is buffered.

Second Embodiment
FIG. 7 is an explanatory view of the vehicle according to the second embodiment, and is a cross-sectional view of the vehicle in a plane orthogonal to the left and right direction at the center of the seat in the left and right direction. FIG. 8 is a plan view of the roof lining of the second embodiment.
In the first embodiment shown in FIG. 3, the guide portion 60 is recessed in the roof lining 51. On the other hand, the second embodiment shown in FIG. 7 is different from the first embodiment in that the guide portion 160 is formed flat on the roof lining 151 and displaceable upward. In addition, about the structure similar to 1st Embodiment shown in FIG. 3, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

As shown in FIG. 7, the vehicle interior material 150 has a roof lining 151 and an inclined member 157 disposed between the roof 9 and the roof lining 151.
The roof lining 151 is formed in a flat plate shape. Above the sheet 1 in the roof lining 151, the air bag body 33 contacts from below to form a guide portion 160 which is displaced upward. Specifically, the guide portion 160 is formed in a rectangular shape as viewed in the vertical direction (see FIG. 8). The guide portion 160 is formed thinner than the portion other than the guide portion 160 so that the rigidity is lower than the portion other than the guide portion 160 in the roof lining 151.

  Grooves 164 are formed along the left-right direction on both the front and rear sides of the guide 160 along the peripheral edge of the guide 160 (see FIG. 8). The groove portion 164 is formed in a V-like cross-sectional view having an opening on the top surface of the roof lining 151. Of the pair of front and rear groove portions 164, the rear groove portion 164A is provided rearward of the fracture boundary portion 29 of the seat 1 in the front and rear direction. The front groove portion 164B of the pair of front and rear groove portions 164 is provided in front of the head of the occupant M seated at the regular position of the seat 1 in the front-rear direction.

  The inclination member 157 is formed in a block shape, for example, of urethane foam, expanded polystyrene, or the like, similarly to the restriction member 55 in the first embodiment shown in FIG. 3. The inclined member 157 is attached to the lower surface of the roof 9 directly above the guide portion 160. The inclined member 157 has an inclined surface 158 opposed to the guide portion 160 and inclined downward from the rear to the front. The inclined surface 158 is disposed above the front of the guide 160.

Hereinafter, the operation of the vehicle interior material 150 of the present embodiment will be described. In addition, please refer to FIG. 7 and FIG. 8 for the code | symbol of each component of the vehicle in the following description.
FIGS. 9 and 10 are explanatory views of the interior material for a vehicle of the second embodiment, and are cross-sectional views of the vehicle in a plane orthogonal to the lateral direction at the center of the seat in the lateral direction. 9 and 10, the structure of the airbag device 30 in the seat 1 is simplified and illustrated.

When an impact of a predetermined size or more is input to the vehicle, the air bag body 33 breaks the fracture boundary portion 29 of the seat cover 28 and expands upward as in the first embodiment.
The tip of the air bag body 33 deployed upward contacts the guide portion 160. Then, as shown in FIG. 9, the roof lining 151 is bent in the groove portion 164 by the deployment pressure of the air bag body 33. And since the guide part 160 is formed so that rigidity may become low locally, it curves so that it may become concave toward upper direction. At this time, the portion of the roof lining 151 located in front of the guide portion 160 is pulled back toward the rear. Further, the portion of the roof lining 151 located behind the guide portion 160 is drawn forward.

  The upwardly displaced guide portion 160 contacts the inclined member 157 disposed directly above the guide portion 160. Here, an inclined surface 158 is provided in a portion of the inclined member 157 that faces the guide portion 160. For this reason, the deformation of the front portion of the guide portion 160 is restricted so as to conform to the inclined surface 158. The lower surface of the front portion of the guide portion 160 is a guide surface 161 which inclines downward from the rear to the front.

  As shown in FIG. 10, the tip end portion of the air bag body 33 is inflated diagonally downward and forward along the guide surface 161 after the guide portion 160 is displaced upward. As a result, the tip end portion of the air bag body 33 is inflated to the front of the head of the occupant, and the air bag body 33 is deployed so as to cover the head of the occupant M.

Thus, the guide portion 160 of the present embodiment is formed so as to be displaceable upward by the contact of the air bag body 33.
According to this configuration, by bringing the deployed airbag bag body 33 into contact with the guide portion 160, the guide portion 160 is displaced upward, so that the distance between the head of the occupant M and the roof lining 151 It can be secured large. Therefore, the air bag body 33 can be smoothly passed between the head of the occupant M and the roof lining 151. Therefore, the air bag body 33 can be deployed more accurately.

  Moreover, since the groove part 164 is formed in the roof lining 151 along the peripheral part of the guide part 160, the roof lining 151 can be easily bent in the groove part 164. Therefore, the guide portion 160 can be displaced upward. Therefore, the guide portion 160 which can be displaced upward can be easily formed.

  Further, since the guide portion 160 has lower rigidity than the portion of the roof lining 151 other than the guide portion 160, the guide portion 160 which can be displaced upward can be easily formed.

  Further, since the inclined member 157 is disposed above the guide portion 160, the guide portion 160 can be brought into contact with the inclined member 157 by displacing the guide portion 160 upward. At this time, since the inclined member 157 faces the guide portion 160 and has the inclined surface 158 inclined downward from the rear toward the front, the guide portion 160 contacts the inclined member 157, whereby the guide portion 160 It inclines downward as it goes from the rear to the front, along the inclined surface 158 of the inclined member 157. Therefore, the deployment direction of the air bag body 33 in contact with the guide portion 160 can be directed diagonally downward and forward. Thus, the air bag body 33 passing between the head of the occupant M and the roof lining 151 can be reliably deployed forward of the head of the occupant M. Therefore, the air bag body 33 can be deployed more accurately.

  In the present embodiment, by forming the guide portion 160 thinner than the portion other than the guide portion 160 in the roof lining 151, the rigidity of the guide portion 160 is lower than that in the portion other than the guide portion 160 in the roof lining 151 It is like that. However, the present invention is not limited to this. For example, the guide may be made lower in rigidity than a portion other than the guide in the roof lining by forming the guide with an elastic material or the like.

  Further, in the present embodiment, the groove portion 164 is formed along the left and right direction on both the front and rear sides of the guide portion 160. However, the present invention is not limited to this, and the groove portions may be formed along the front-rear direction on both the left and right sides of the guide portion 160.

The present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications can be considered within the technical scope.
For example, although the headrest 4 is integrally provided at the upper end portion of the seatback 3 in each of the above embodiments, the present invention is not limited to this, and the headrest may be provided separately from the seatback.

  In addition, without departing from the spirit of the present invention, it is possible to replace components in the above-described embodiment with known components as appropriate.

DESCRIPTION OF SYMBOLS 1 Seat for vehicles 4 Headrest 33 Air bag body 50, 150 Interior material for vehicles 51, 151 Roof lining 60, 160 Guide portion 61 Guide surface 157 Tilting member 158 Slope surface 164 Groove portion M Passenger

Claims (6)

A roof lining disposed above the vehicle seat on which the occupant sits;
The air bag body is formed at a position corresponding to the head of the occupant in the roof lining, and the air bag body built in the headrest of the vehicle seat expands upward from the head of the occupant. A guiding portion with which the bag bag body contacts,
Equipped with
A vehicle configured to guide the air bag body such that the air bag body expands forward from above the head of the occupant and forward of the head of the occupant. Interior material for.   The interior material for a vehicle according to claim 1, wherein the guide portion has a guide surface which inclines downward as it goes from the rear to the front.   The interior material for a vehicle according to claim 1, wherein the guide portion is formed so as to be displaceable upward by contact with the air bag body.   The interior material for a vehicle according to claim 3, wherein a groove portion is formed in the roof lining along a peripheral edge portion of the guide portion.   The interior material for a vehicle according to claim 3, wherein the guide portion is lower in rigidity than a portion of the roof lining other than the guide portion. An inclined member is disposed above the guide portion,
The interior material for a vehicle according to any one of claims 3 to 5, wherein the inclined member faces the guide portion and has an inclined surface which is inclined downward from the rear to the front. .

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