JP2018076032A - Reinforcement member and air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing member which does not hinder the deployment of an airbag main body while effectively reinforcing roof lining, and an airbag device provided with the reinforcing member. SOLUTION: A roof flying 28 can be effectively reinforced by bringing a support portion 62 into contact with the back of the roof flying 28. The reinforcing member main body 61 is fixed to the vehicle body side together with the tether belt 35. The reinforcing member 29 is securely held on the vehicle body side against the deployment of the airbag body, and the deployment of the airbag body is less likely to be hindered. [Selection diagram] Fig. 1

Description

  The present invention relates to a reinforcing member that reinforces a ceiling interior material and an airbag device including the reinforcing member.

  2. Description of the Related Art Conventionally, an airbag device having an airbag that is inflated and deployed by introducing gas, a so-called curtain that deploys the airbag along a predetermined surface including a pillar portion of a side portion of a vehicle compartment and a window portion of a door. Airbag devices are known. The airbag of such an airbag device is normally folded into an elongated shape, and is disposed along the roof side of the upper edge of the window, and is a pillar that is an interior part attached to roofing or pillars that are ceiling panels. Covered with garnish. When an impact such as a side collision or rollover occurs, gas is supplied from the inflator, and the airbag inflates and expands downward along the side window glass while opening the roof lining and pillar garnish. And restrain the occupant to protect the head and the like.

  The roof lining that covers the airbag needs to maintain strength against bending when pushed from the vehicle interior side in order to ensure alignment with the pillar garnish. Then, the structure which provided the reinforcement member in roof lining is known (for example, refer patent document 1).

Japanese Patent Laid-Open No. 63-240443 (Page 2, Fig. 1-2) Japanese Patent Laying-Open No. 2015-110396 (Page 4-10, FIG. 1-2)

  The airbag of the curtain airbag device is usually fixed at its front end to the frontmost pillar, that is, the A pillar via a tether belt (strap). Therefore, when a reinforcing member is provided on the back side of the roof lining, it is necessary that the reinforcing member does not hinder the attachment of the tether belt or the deployment of the airbag.

  The present invention has been made in view of the above points, and provides a reinforcing member that effectively reinforces the ceiling interior material and hardly hinders deployment of the airbag main body, and an airbag device including the reinforcing member. Objective.

  The reinforcing member according to claim 1 is arranged along the ceiling member in a state where the upper part is fixed and folded on the ceiling member of the vehicle body, and is inflated and deployed downward along a predetermined surface in the vehicle interior by introducing gas. A reinforcing member that reinforces the ceiling interior material disposed adjacent to the interior material covering the bag side of the bag-like airbag body and the ceiling member, and covering the cabin side of the pillar portion of the vehicle body. A base end portion is connected to the airbag main body portion and a distal end portion is fixed to the vehicle body together with a connecting body fixed to the pillar portion, and is provided on the reinforcing member main body portion, And a support portion that contacts the back of the ceiling interior material and supports the ceiling interior material.

  The reinforcing member according to claim 2 is the reinforcing member according to claim 1, wherein the reinforcing member is provided in the reinforcing member main body portion, and protrudes in a direction intersecting with a deployment direction of the airbag main body portion to be engaged with the vehicle body side. It has a joint.

  According to a third aspect of the present invention, there is provided the reinforcing member according to the first or second aspect, wherein at least a part of the reinforcing member is bent in a direction intersecting the reinforcing member main body portion and the support portion.

  According to a fourth aspect of the present invention, there is provided the reinforcing member according to the third aspect, further comprising a holding portion that continues to the support portion and the bent portion and holds the coupling body between the vehicle body and the vehicle body.

  The airbag device according to claim 5 is arranged along the ceiling member in a state where the upper portion is fixed and folded on the ceiling member of the vehicle body, and is inflated downward along the predetermined plane into the vehicle interior by introducing gas. An airbag including a bag-shaped airbag main body portion to be deployed, a connecting body having a base end portion fixed to the airbag main body portion and a distal end portion fixed to the pillar portion of the vehicle body, and the pillar portion An interior material that covers a vehicle interior side, a ceiling interior material that covers the airbag body and the vehicle interior side of the ceiling member, and is disposed adjacent to the interior material, and the ceiling interior material is reinforced. The reinforcing member according to any one of 1 to 4 is provided.

  The airbag device according to claim 6 is the airbag device according to claim 5, wherein the connection body includes a connection body main body portion having a base end portion connected to the air bag main body portion and a distal end portion fixed to the pillar portion; A held portion that is continuous with the connecting body main body and held by a reinforcing member, and a breakable portion that can be broken by inflating and deploying the airbag main body to divide the connecting body main body and the held portion. It is provided.

  According to the reinforcing member of the first aspect, the ceiling interior material can be effectively reinforced by bringing the support portion into contact with the back of the ceiling interior material, and the reinforcement member main body is fixed to the vehicle body side together with the coupling body. Thus, the reinforcing member is securely held on the vehicle body side with respect to the deployment of the airbag body, and the deployment of the airbag body is unlikely to be hindered.

  According to the reinforcing member of the second aspect, in addition to the effect of the reinforcing member of the first aspect, the engaging portion protruding in the direction intersecting the deployment direction of the airbag main body portion is engaged with the vehicle body side. Thus, the reinforcing member can be reliably held on the vehicle body side against the deployment of the airbag main body.

  According to the reinforcing member according to claim 3, in addition to the effect of the reinforcing member according to claim 1 or 2, the bent portion at least partially bent in a direction intersecting with the reinforcing member main body portion and the support portion, respectively. By providing, the strength of the reinforcing member can be secured and the ceiling interior material can be reinforced more effectively.

  According to the reinforcing member of claim 4, in addition to the effect of the reinforcing member of claim 3, the holding part that holds the coupling body with the vehicle body is continuously provided in the support part and the bent part, The reinforcing member can hold the connecting body more securely with respect to the vehicle body side.

  According to the airbag device of the fifth aspect, by providing the reinforcing member according to any one of the first to fourth aspects, the air that hardly reinforces the ceiling interior material and hardly hinders the deployment of the airbag main body. A bag device can be provided.

  According to the airbag device of the sixth aspect, in addition to the effect of the airbag device of the fifth aspect, the to-be-held portion continuous with the connecting body main body portion is held by the reinforcing member, and the airbag body portion is inflated and deployed. As a result, the rupture portion breaks, and the connected body main body portion and the held portion can be separated, whereby the airbag main body portion can be more smoothly deployed.

(A) is sectional drawing of the vehicle width direction of the airbag apparatus provided with the reinforcement member of one embodiment of this invention, (b) is sectional drawing of the vehicle front-back direction of an airbag apparatus. It is a perspective view which shows a part of airbag apparatus same as the above from the compartment side. It is a perspective view which shows a reinforcement member same as the above. It is a perspective view which shows the fixing member which fixes a reinforcement member same as the above to the vehicle body side. It is a side view which shows a part of connection body of an airbag same as the above. (A) is a side view schematically showing a part of the mounted state of the airbag device, and (b) is a side view schematically showing a part of the deployed state of the airbag main body of the airbag device. . It is a side view which shows typically a part of vehicle body which attached the airbag apparatus same as the above from the compartment side.

  The configuration of an embodiment of the present invention will be described below with reference to the drawings.

  In FIG. 7, reference numeral 10 denotes an airbag. An airbag device 11 having the airbag 10 is also called a curtain airbag device, and is a roof side portion as a storage position of a compartment 14 of a vehicle body of a vehicle which is a vehicle. 15 is arranged. The airbag 10 is also called a curtain airbag, a side-impact airbag, an inflatable curtain, or a head protection airbag. The airbag 10 is subjected to a side impact or rollover. For example, it is developed in a downward direction in a predetermined direction on the side of an occupant as a protected object to protect the occupant's head and the like.

  In the following description, the front-rear direction, the vehicle width direction, the both-side direction, the up-down direction, and the like are based on the straight direction of the vehicle, and the front direction (arrow F direction), the rear direction (arrow R direction), U direction), downward (arrow D direction), outside of the compartment 14 (in the direction of arrow W shown in FIG. 1A), inside of the compartment 14 (in the direction of arrow C shown in FIG. 1A), etc. explain.

  The vehicle body includes a front seat and a rear seat in which passengers can sit in the passenger compartment 14 and is covered with glass that can be opened at the top corresponding to the front seat and the rear seat (the first seat). A door (not shown) provided with first and second window portions (side windows) 18 and 19 is provided. In addition, pillar portions 20 are set on both sides of the passenger compartment 14. The pillar portion 20 is also called, for example, in order from the front side, a front pillar 21 as a (first) columnar body called a A pillar, a center pillar 22 as a (second) columnar body called a B pillar, and a C pillar. A rear pillar 23 as a (third) columnar body is provided. A window 18 is located behind the front pillar 21 and in front of the center pillar 22, and a window 19 is located behind the center pillar 22 and in front of the rear pillar 23. These windows 18 and 19, doors, and pillars 20 (pillars 21, 22, and 23) form predetermined surfaces on both sides of the passenger compartment 14. The vehicle body as a ceiling member that constitutes a member to be attached, which is also called a roof side rail, on the upper side of the pillar portion 20 (pillars 21, 22, 23), that is, the upper edge portion that is one edge portion of the window portions 18, 19. A panel 25 is provided, and a ceiling panel as a ceiling portion is supported through the vehicle body panel 25. A front glass (front windshield) is provided on the front side of the front pillars 21 on both sides, and a rear glass is provided on the rear side of the rear pillars 23 on both sides. And the roof side part 15 as a storage position is set from the edge part on both sides of the ceiling panel to the part covering almost the entire length of the front pillar 21 and the rear pillar 23 extending in a direction intersecting with this edge part. A predetermined plane on which the airbag 10 is deployed is set inside an arc virtually formed by the edge portion of the ceiling panel and the front pillar 21 and the rear pillar 23.

  Here, the center pillar 22 indicates not a pillar portion at the front and rear ends but a pillar portion covered with the deployed airbag 10. Depending on the type of vehicle, for example, four or more pillar portions may be provided on one side, but the third and subsequent pillar portions from the front will be described as the rear pillar 23.

  The airbag device 11 is a so-called front and rear seat airbag that can protect passengers in the front and rear seats. The airbag device 11 includes an airbag 10. The airbag device 11 includes an inflator 26 that is a gas generator. Further, in addition to the airbag 10 and the inflator 26, the airbag device 11 is a pillar, which is a structure, that is, a cover body, as an interior material that covers the compartment 14 side of the pillar portion 20 (pillars 21, 22, 23). The garnish 27 includes a roof lining 28 that is a ceiling covering member as a ceiling interior material, and a reinforcing member 29 that reinforces the roof lining 28. Further, the airbag device 11 includes a bracket (not shown) as an airbag fixing member. In addition, the airbag device 11 includes a sleeve (not shown) as a shape holding member.

  The airbag 10 includes a roof side portion 15 surrounded by a vehicle body panel 25 and a roof lining 28 that extends from the upper end of the pillar portion 20 (pillars 21, 22, and 23) to the ceiling, that is, a door opening portion of the vehicle body. It is folded in an elongated shape along the upper edge and is stored in a longitudinal shape. The airbag 10 includes a gas introduction part 32 as an inflator connection part. The airbag 10 includes an airbag main body 33 formed in a flat bag shape. Further, the airbag 10 includes a plurality of attachment portions 34. The airbag 10 includes a tether belt 35 as a connecting body. In the present embodiment, the airbag 10 is a so-called center mount type, but may be a rear mount type. A reinforcing body (inner bag) may be disposed inside the airbag 10.

  The gas introduction part 32 is a part into which the inflator 26 is inserted and connected to introduce gas. In the present embodiment, which is the center mount type airbag 10, the gas introduction part 32 is provided projectingly at the center part in the front-rear direction of the upper part of the airbag main body part 33. The rear end portion (upper end portion) of the gas introduction portion 32 is an insertion opening 38 into which the inflator 26 is inserted.

  The airbag main body 33 is formed in a bag shape, and the upper portion (attachment portion 34) is fixed to the vehicle body panel 25 of the vehicle body and is disposed along the vehicle body panel 25 in a folded state. By being introduced, the vehicle interior 14 is configured to inflate and deploy downward along a predetermined surface. The airbag main body 33 appropriately includes an air chamber (cell) that is an inflatable portion that can be inflated by gas and a non-inflatable portion that is located on the side of the seat and does not inflate, depending on the shape of the vehicle body. . The air chamber of the airbag main body portion 33 communicates directly with the gas introduction portion 32 so that the gas supplied from the inflator 26 is directly supplied from the gas introduction portion 32.

  The attachment portion 34 fixes the airbag 10 to the vehicle body panel 25. The mounting portion 34 is, for example, a mounting piece for mounting the vehicle body, and a plurality of mounting portions 34 are formed at predetermined positions on the upper edge portion of the airbag main body portion 33. The attachment portion 34 is directly or indirectly fixed to the vehicle body side, that is, the vehicle body panel 25 via a fixing tool such as a bolt (not shown).

  And the gas introduction part 32, the airbag main-body part 33, and the attachment part 34 are integrally comprised by the single or several base fabric.

  The tether belt 35 connects the airbag 10 to the vehicle compartment 14 at the position of the front pillar 21, for example. The tether belt 35 is also called a hanging string, a tether, or a strap. In the present embodiment, the tether belt 35 is connected to the front end portion of the airbag 10 (airbag main body portion 33). The tether belt 35 includes a tether main body 41 as a connecting body main body. Further, the tether belt 35 includes a held portion 42 held by the reinforcing member 29 as shown in FIGS. 5, 6 (a), and 6 (b). Further, the tether belt 35 includes a breaking portion 43 interposed between the tether main body portion 41 and the held portion 42. The tether belt 35 is composed of one or more base fabrics. As shown in FIG. 7, the tether belt 35 is disposed from the roof side portion 15 to the front pillar 21 in the accommodated state of the airbag 10 (airbag main body portion 33).

  The tether body 41 shown in FIG. 2, FIG. 5, FIG. 6 (a), FIG. 6 (b), and the like is provided in a long shape. The tether body 41 has a base end (rear end) connected to the airbag body 33 by joining (sewing) or the like, and a tip (front end) fixed to the front pillar 21 such as a bolt (not shown). It is fixed through.

  The held portion 42 is provided integrally with the tether body portion 41 in the vicinity of the center portion in the longitudinal direction of the tether body portion 41. The held portion 42 is provided so as to protrude in a section shape in a direction intersecting the longitudinal direction of the tether body portion 41. The held portion 42 is held by the reinforcing member 29 and temporarily fixed to the vehicle body side (vehicle body panel 25). The held portion 42 may include a held hole 42 a that is held by the reinforcing member 29. Further, the held portion 42 may be provided with slit-shaped cut portions 42b continuously on both sides of the held hole 42a. Further, the held portion 42 may be formed thinner than the tether body portion 41.

  The breaking portion 43 divides the tether main body portion 41 and the held portion 42 by being broken by the inflation pressure of the airbag main body portion 33. For example, the break portion 43 is formed in a perforated shape (slit shape). The fracture portion 43 is formed along the boundary between the tether body portion 41 and the held portion 42, that is, along the longitudinal direction of the tether body portion 41.

  The inflator 26 supplies gas to the inside of the airbag main body 33 of the airbag 10. The inflator 26 is stored behind or above the rear seat. The inflator 26 is formed in, for example, an elongated cylindrical shape. This inflator 26 has a built-in gas generating means such as a combustion type that burns chemicals (pyro technique type), a storage type that stores gas at high pressure (storage type), or a hybrid type that combines these combustion types and storage types. Has been. The inflator 26 ejects gas from one end inserted into the insertion opening 38 of the airbag 10 (airbag main body 33). Further, the other end portion of the inflator 26 is provided with a connector portion (not shown) to which an electric wire called a harness is connected. The inflator 26 is electrically connected to a control device (not shown) via the connector portion, and the operation of the inflator 26 is controlled by an electric signal from the control device.

  The pillar garnish 27 is a part of a predetermined surface. The pillar garnish 27 is formed in a longitudinal shape along the vertical direction by using, for example, a synthetic resin having an epidermis. The pillar garnish 27 is disposed so as to cover the interior side of the passenger compartment 14 of the pillar portion 20 (pillars 21, 22, and 23). For example, the pillar garnish 27 covers the tether belt 35 at the position of the front pillar 21. That is, the pillar garnish 27 includes a front pillar garnish 45 that is a first pillar garnish that covers the front pillar 21, a center pillar garnish 46 that is a second pillar garnish that covers the center pillar 22, and a third pillar that covers the rear pillar 23. The rear pillar garnish 47, which is the pillar garnish, is set.

  The roof lining 28 is formed of, for example, a synthetic resin provided with an epidermis. This roof lining 28 is also called a head lining. The roof lining 28 is formed in a thin shape and is easily bent with respect to the pressing. In addition, the roof lining 28 is disposed over substantially the entire length of the front pillar 21 and the rear pillar 23 of the roof side portion 15 from the ceiling portion, and includes the folded airbag 10 (the airbag main body portion 33). The interior side of the passenger compartment 14 is covered. That is, the roof lining 28 covers the vehicle compartment 14 side of the vehicle body panel 25 and the pillar garnish 27 (pillar garnish 45, 46, 47) covering the vehicle compartment 14 side of the pillar portion 20 (pillars 21, 22, 23) of the vehicle body. ). The roof lining 28 includes a general part 51 exposed in the vehicle compartment 14 and a non-exposed part 52 not exposed in the vehicle compartment 14. The roof lining 28 is separated from the upper end of the pillar garnish 27 by being deformed so that the lower end of the roof side portion 15 bends when the airbag 10 (airbag main body portion 33) is deployed. The (airbag body portion 33) can be inflated and deployed into the passenger compartment 14.

  The general part 51 constitutes a design surface in the passenger compartment 14 continuously with the pillar garnish 27. On the back side of the general portion 51, that is, on the vehicle body side (vehicle body panel 25 side), a contact surface 54 with which the reinforcing member 29 is contacted is provided. The contact surface 54 is provided in a planar shape, and at least a part thereof is located in the vicinity of the non-exposed portion 52. In the present embodiment, the contact surface 54 is located below the roof lining 28 and extends along the front-rear direction and the vehicle width direction.

  The non-exposed portion 52 is a portion covered with the pillar garnish 27 (pillar garnish 45, 46, 47). The non-exposed portion 52 is provided along the edge of the general portion 51 on the side of the pillar garnish 27 (pillar garnish 45, 46, 47). The non-exposed portion 52 is provided, for example, by being bent to the opposite side to the vehicle compartment 14 side with respect to the edge portion of the general portion 51. The position of the non-exposed part 52 is covered with the pillar garnish 27 (pillar garnish 45, 46, 47), so that the pillar garnish 27 (pillar garnish 45, 46, 47) and the general part 51 of the roof lining 28 are continuously provided. The design surface is configured.

  A reinforcing member 29 shown in FIG. 1A, FIG. 1B, FIG. 2, FIG. 3 and the like reinforces the roof lining 28 against an external force from the passenger compartment 14 side. That is, the reinforcing member 29 is configured so that the roof lining 28 and the pillar garnish 27, in this embodiment, the front pillar garnish 45 are aligned by suppressing deformation at the parting position of the roof lining 28 with respect to an external force from the passenger compartment 14 side. Is guaranteed. Therefore, the reinforcing member 29 is located in the vicinity of the front end portion of the roof lining 28. The reinforcing member 29 is formed by pressing a material harder than the roof lining 28, for example, a metal plate. The reinforcing member 29 includes a reinforcing member main body 61. The reinforcing member 29 includes a plurality of support portions 62. Further, the reinforcing member 29 includes a plurality of bent portions 63. The reinforcing member 29 includes an engaging portion 64. Further, the reinforcing member 29 includes a holding portion 65. The reinforcing member 29 is integrally provided with a reinforcing member main body 61, a support portion 62, a bent portion 63, an engaging portion 64, and a holding portion 65.

  The reinforcing member main body 61 is fixed to the vehicle body side (vehicle body panel 25 side) together with the tether belt 35 by a clip 67 as a fixing member. The reinforcing member main body 61 is provided in a planar shape (plate shape). The reinforcing member main body 61 is provided in a square shape. The reinforcing member main body 61 is disposed so as to face the compartment 14 side of the vehicle body panel 25 in a state where the reinforcing member 29 is installed on the back side of the roof lining 28 and to have a longitudinal direction in the front-rear direction. That is, in this embodiment, the reinforcing member main body 61 is arranged in a planar shape extending in the front-rear direction and the up-down direction with the reinforcing member 29 attached to the vehicle body. Further, the reinforcing member main body 61 has the held portion 42 of the tether belt 35 superimposed on the vehicle body side with the reinforcing member 29 attached to the vehicle body side, and this held portion between the vehicle body side (vehicle body panel 25). 42 is held (clamped). Further, the reinforcing member main body 61 is provided with a mounting hole 68 into which the clip 67 is fitted. Further, the reinforcing member main body 61 may include a positioning hole 69.

  The clip 67 (FIG. 4) is formed of, for example, a synthetic resin. The clip 67 is engaged with a clip main body 67a as a shaft-shaped fixing member main body, a pressing holding portion 67b as a fixing holding portion protruding around the clip main body 67a, and a reinforcing member 29 (mounting hole 68). And a retaining portion 67c. The clip 67 has a clip main body 67a extending over a mounting hole 68, a held hole 42a of the tether belt 35, and a locking hole 71 as a vehicle body side locking portion provided on the vehicle body side (vehicle body panel 25). Inserted and fixed in the locking hole 71, the retaining portion 67c is locked and fixed in the mounting hole 68, and the press holding portion 67b holds the tether belt 35 (held portion 42) in a pressed state.

  The attachment hole 68 is fixed to the locking hole 71 by a clip 67. The attachment hole 68 is provided by cutting out the reinforcing member main body 61 into a long hole shape. The mounting hole 68 is provided, for example, along the vertical direction. Further, the lower end portion of the attachment hole 68 is continuous with the lower edge portion of the reinforcing member main body portion 61. Therefore, the lower portion of the mounting hole 68 is opened. For this reason, the mounting hole 68 is engaged with the clip 67 from above.

  The positioning hole 69 is used to position and prevent the reinforcing member 29 from being positioned with respect to the vehicle body (vehicle body panel 25) by inserting a protrusion as a locking portion (not shown) protruding from the vehicle body side (vehicle body panel 25). It is. That is, the positioning hole 69 has a function of a detent portion. The positioning hole 69 is provided through the reinforcing member main body 61 in the thickness direction. The positioning hole 69 is provided in a circular shape. The positioning hole 69 is provided at a position away from the mounting hole 68. The positioning hole 69 is not an essential configuration.

  The support portion 62 is provided on the reinforcing member main body 61 and supports the roof lining 28 by contacting the back surface of the roof lining 28. In the present embodiment, for example, two support portions 62 are provided. These support portions 62 are continuous with the reinforcing member main body portion 61 via a bent portion 63 and a holding portion 65. The support portions 62 are provided at both ends in the longitudinal direction of the reinforcing member main body portion 61. Further, these support portions 62 are positioned below the reinforcing member main body 61 and are connected to the lower portion of the reinforcing member main body 61 via the holding portion 65. Therefore, these support parts 62 are arranged away from each other. That is, these support portions 62 are located on opposite sides of the attachment hole 68. Further, these support portions 62 are provided in a planar shape extending in a direction intersecting (substantially orthogonal) to the reinforcing member main body portion 61. In the present embodiment, these support portions 62 are provided in a planar shape extending along the longitudinal direction of the reinforcing member main body portion 61. That is, in the present embodiment, these support portions 62 have a planar shape extending in the front-rear direction and the vehicle width direction with the reinforcing member 29 attached to the vehicle body side. The support portions 62 are in contact with the contact surface 54 on the back side of the roof lining 28 in a planar shape. In other words, these support portions 62 are pressing portions for the roof lining 28. In addition, at least one of the support portions 62 is located in the vicinity of the position where the roof lining 28 and the pillar garnish 27 (front pillar garnish 45) are aligned (the parting position of the roof lining 28).

  The bent portion 63 improves the strength of the reinforcing member 29. These bent portions 63 are bent in a direction intersecting (substantially orthogonal) to each of the reinforcing member main body portion 61, the support portion 62, and the holding portion 65. That is, these bent portions 63 are bent so as to be raised with respect to the reinforcing member main body portion 61. Specifically, these bent portions 63 have a planar shape extending along the vehicle width direction and the vertical direction with the reinforcing member 29 attached to the vehicle body side. Therefore, these bent portions 63 are bent from the reinforcing member main body portion 61 in a direction crossing at least the deployment direction of the airbag main body portion 33. The bent portions 63 are bent toward at least the direction opposite to the vehicle body (the vehicle compartment 14 side) with respect to the reinforcing member main body portion 61. In the present embodiment, for example, two bent portions 63 are provided for these bent portions 63. More specifically, these bent portions 63 are continuously bent at both ends in the longitudinal direction of the reinforcing member main body portion 61. That is, these bent portions 63 have an upper end side continuous with the reinforcing member main body 61 and a lower end side continuous with the support portion 62 and the holding portion 65. Further, in the present embodiment, these bent portions 63 are bent, for example, in an L shape with respect to the reinforcing member main body portion 61. For example, the distal end side is bent with respect to the reinforcing member main body portion 61 (and the holding portion 65). You may be bent in the bag shape further bent in the substantially parallel direction. These bent portions 63 constitute both end edges in the longitudinal direction of the reinforcing member 29 in the present embodiment. For this reason, these bent portions 63 are located on opposite sides of the attachment hole 68.

  The engaging portion 64 is a hook portion that is provided in the reinforcing member main body portion 61 and protrudes in a direction intersecting the deployment direction of the airbag main body portion 33 so as to be engaged with the vehicle body side. The engaging portion 64 protrudes from the upper portion of the reinforcing member main body 61. That is, the engaging portion 64 is disposed on the side opposite to the support portion 62 with respect to the reinforcing member main body portion 61. Further, the engaging portion 64 is located above the mounting hole 68, for example. Further, the engaging portion 64 is bent toward the vehicle body side (vehicle body panel 25 side), for example, with respect to the reinforcing member main body portion 61. That is, the engaging portion 64 is provided in a claw shape. The distal end side of the engagement portion 64 is inserted into and engaged with an engagement hole 73 as a vehicle body side engagement portion provided on the vehicle body side (vehicle body panel 25). In other words, the reinforcing member 29 is configured to be fixed at two locations, upper and lower, with respect to the vehicle body side (vehicle body panel 25). The engaging portion 64 locks the reinforcing member 29 against the pulling direction of the airbag main body portion 33, that is, downward, so that the reinforcing member 29 is inflated by the deployment pressure of the airbag main body portion 33. The bag body 33 is set so as not to be pulled in the deployment direction. The engaging portion 64 is not an essential configuration.

  The holding portion 65 is configured such that the tether body portion 41 of the tether belt 35 is overlapped with the reinforcing member 29 attached to the vehicle body side, and this tether body portion 41 is held (clamped) between the vehicle body (vehicle body panel 25). is there. The holding portion 65 is provided substantially flush with the reinforcing member main body portion 61, for example. Therefore, in the present embodiment, the holding portion 65 is arranged in a planar shape extending along the front-rear direction and the up-down direction with the reinforcing member 29 attached to the vehicle body side. Further, in the present embodiment, the holding portion 65 has upper and lower ends connected to the reinforcing member main body 61 and the support portion 62, and a front portion or a rear portion is connected to each bent portion 63. . Therefore, in the present embodiment, two (plural) holding portions 65 are provided. Further, these holding portions 65 are located on opposite sides of the attachment hole 68. These holding portions 65 are not essential components.

  The bracket attaches the airbag 10 (airbag main body 33) to the vehicle body panel 25. The bracket is formed, for example, by pressing a metal plate.

  The sleeve retains the shape of the airbag 10 (airbag main body portion 33) folded into a predetermined shape and prevents the sleeve from collapsing. For this sleeve, a tubular member provided with a breakable slit or a string-like member such as a breakable adhesive tape is used.

  The airbag 10 first inserts one end portion of the inflator 26 into the insertion opening 38 of the gas introduction portion 32 from the state in which the airbag main body portion 33 is flattened, and the inflator 26 is moved outward from the airbag 10. It is fixed integrally as the exposed state.

  Next, the airbag body 33 is folded into a roll shape, zigzag shape (parasol shape), or a combination thereof to form a predetermined elongated shape, and then the airbag 10 (airbag body portion 33) is formed using a sleeve or the like. The folded shape is held so that the coupling can be released, i.e., can be broken by the pressure during deployment. In this way, the airbag 10 (airbag main body 33) is folded into an elongated shape and the folded shape is maintained.

  Then, the airbag 10 and the inflator 26 folded as described above are brought into the vehicle compartment 14 and are attached to the vehicle body before the interior materials such as the roof lining 28 and the pillar garnish 27 are attached. This mounting operation is performed by fixing and fixing the plurality of mounting portions 34 and the tether belt 35 of the airbag 10 to the vehicle body by a fixture, and the held portion 42 of the tether belt 35 together with the reinforcing member 29 by the clip 67 (vehicle body panel 25). It is done by fixing to.

  At this time, the reinforcing member 29 causes the engaging portion 64 to engage with the engaging hole 73 on the vehicle body side, and the tether main body portion 41 and the held portion 42 of the tether belt 35 are connected to the holding portions 65 and 65 and the reinforcing member main body portion 61. And the vehicle body side (vehicle body panel 25), and positioning and rotation prevention with respect to the vehicle body side (vehicle body panel 25) is performed by inserting a protrusion on the vehicle body side (vehicle body panel 25) into the positioning hole 69. A clip 67 is attached to the hole 68, and the clip 67 is aligned with the held hole 42 a of the tether belt 35 and locked to the locking hole 71, so that the holding side 42 of the tether belt 35 and the vehicle body side (vehicle panel) 25) fixed. For example, the cut holes 42b are provided on both sides of the held hole 42a, so that the clip 67 can be inserted to the locking hole 71. An inflator 26 is fixed at a position corresponding to the center pillar 22. Further, the harness derived from the inflator 26 is connected to a control device provided in the vehicle body.

  Next, roof roofing 28 is attached to the ceiling panel of the vehicle body to cover airbag 10 and inflator 26, and pillar garnish 27 (pillar garnish 45, 46, 47) is attached to pillar portion 20 (pillar 21, 22, 23), respectively. This completes the installation work to the vehicle body. In this attached state, the support portions 62 of the reinforcing member 29 are in contact with the back side (abutment surface 54) of the roof lining 28, and the airbag 10 and the inflator 26 are connected to the interior of the vehicle compartment 14 by the roof lining 28 and the pillar garnish 27. While being isolated, the inflator 26 inserted into the gas introduction part 32 and the airbag body part 33 folded in a roll shape are held at a position above the pillar garnish 27.

  Thus, the roof lining 28 can be effectively reinforced by bringing the support portion 62 into contact with the back of the roof lining 28 (contact surface 54).

  That is, the roof lining 28 has no structure such as the air bag body 33 and the inflator 26 inside the vehicle at the position where the roof lining 28 and the pillar garnish 27 (front pillar garnish 45) that covers only the tether belt 35 are present. It becomes easy to bend when pushed from the side. Therefore, by arranging the reinforcing member 29 described above, the roof lining 28 can be prevented from bending when the roof lining 28 is pushed from the passenger compartment 14 side without increasing the strength of the roof lining 28 more than necessary. Matching between lining 28 and pillar garnish 27 (front pillar garnish 45) can be guaranteed.

  In addition, since a plurality of support portions 62 are provided, the roof lining 28 can be more effectively reinforced.

  Even if the roof lining 28 is deformed at the time of assembly, the roof lining 28 is corrected because the plurality of support portions 62 are set to the reinforcing member 29, and the alignment with the pillar garnish 27 (front pillar garnish 45) is improved. it can.

  Furthermore, the strength of the reinforcing member 29 is secured by providing a bent portion 63 that is at least partially bent in a direction intersecting with the reinforcing member main body portion 61 and the support portion 62, and the roof lining 28 is more effectively reinforced. it can. By setting a plurality of the bent portions 63, the reinforcing member 29 can be more effectively reinforced.

  Further, the holding portion 65 that holds the tether belt 35 between the vehicle body (the vehicle body panel 25) is provided continuously to the support portion 62 and the bent portion 63, so that the strength of the holding portion 65 is secured, and the reinforcing member 29 is the tether belt. 35 can be held more securely against the vehicle body.

  In the event of a side collision or rollover of the vehicle, the inflator 26 is actuated by the control device, and the gas injected from the inflator 26 inflates the gas introduction part 32 and then into the airbag body part 33. The airbag main body portion 33 is inflated and deployed downward along a predetermined surface on the side portion of the passenger compartment 14 to protect the occupant (indicated by an imaginary line L in FIG. 7).

  At this time, the reinforcing member main body 61 is fixed to the vehicle body side (vehicle body panel 25) together with the tether belt 35 (held portion 42) by the clip 67, so that the reinforcing member 29 is attached to the vehicle body side (vehicle body panel 25) at a plurality of locations. The reinforcing member 29 is securely held on the vehicle body side with respect to the deployment of the airbag main body portion 33 to prevent it from coming off from the vehicle body side to the occupant side, and the deployment of the airbag main body portion 33 is hardly hindered.

  In addition, the engaging portion 64 protruding in the direction intersecting the deployment direction of the airbag main body 33 is engaged with the vehicle body side (vehicle body panel 25), thereby reinforcing the airbag main body 33 against the deployment. 29 can be securely held by the vehicle body side (vehicle body panel 25), and can be further prevented from coming off from the vehicle body side to the passenger side.

  Further, the held portion 42 that is continuous with the tether main body portion 41 is held by the reinforcing member 29, and the breaking portion 43 is broken by the inflation and deployment of the airbag main body portion 33, so that the tether main body portion 41 and the held portion 42 can be divided. (FIG. 6 (a) and FIG. 6 (b)), the airbag body 33 can be deployed more smoothly. Furthermore, while the tether belt 35 is securely held by the reinforcing member 29, the tether belt 35 can be easily broken from the breaking portion 43 when the airbag main body portion 33 is deployed, and the holding by the reinforcing member 29 can be released. Thus, an appropriate shape of the air chamber can be maintained without increasing the deployment pressure more than necessary, that is, while suppressing the amount of gas used to inflate the air bag body 33. In addition, since the breaking portion 43 is broken only when the airbag main body portion 33 is deployed, a line that holds the airbag main body portion 33 attached to the vehicle body side when the airbag main body portion 33 is not deployed. It can also serve as a guarantee.

  In other words, by providing the reinforcing member 29, it is possible to provide the airbag device 11 that effectively reinforces the roof lining 28 and hardly hinders the deployment of the airbag body 33.

  In the above-described embodiment, the tether belt 35 is attached to the front portion of the airbag main body 33. However, the tether belt 35 may be attached to the rear portion of the airbag main body 33, for example. In this case, by arranging the reinforcing member 29 at a position where the roof lining 28 is aligned with the rear pillar garnish 47, the same effects as those of the above embodiment can be obtained.

  The present invention can be applied to, for example, an airbag apparatus called a curtain airbag apparatus that is deployed along a side window of an automobile.

10 airbag
11 Airbag device
14 compartment
20 Pillar part
25 Body panels as ceiling members
27 Pillar garnish as interior material
28 Roofing as a ceiling interior material
29 Reinforcing member
33 Airbag body
35 Tether belt as a link
41 Tether body as a connected body
42 Holding part
43 Break
61 Reinforcing member body
62 Support
63 Bending part
64 Engagement part
65 Holding part

Claims (6)

A bag-like airbag main body disposed along the ceiling member in a state in which the upper portion is fixed and folded on the ceiling member of the vehicle body, and inflated and deployed downward along a predetermined surface in the vehicle interior by introducing gas; and A reinforcing member that reinforces a ceiling interior material that is disposed adjacent to an interior material that covers the vehicle interior side of the vehicle body and covers the vehicle interior side of the pillar portion of the vehicle body;
A reinforcing member main body fixed to the vehicle body together with a connecting body having a base end connected to the airbag main body and a distal end fixed to the pillar;
A reinforcing member, comprising: a supporting portion that is provided in the reinforcing member main body and is in contact with the back of the ceiling interior material to support the ceiling interior material. The reinforcing member according to claim 1, further comprising an engaging portion that is provided in the reinforcing member main body and protrudes in a direction intersecting with a deployment direction of the airbag main body to be engaged with the vehicle body. The reinforcing member according to claim 1, wherein at least a part includes a bent portion that is bent in a direction intersecting the reinforcing member main body portion and the support portion. The reinforcing member according to claim 3, further comprising a holding portion that is continuous with the support portion and the bent portion and holds the coupling body with the vehicle body. A bag-like airbag main body disposed along the ceiling member in a state in which the upper portion is fixed and folded on the ceiling member of the vehicle body, and inflated and deployed downward along a predetermined surface in the vehicle interior by introducing gas; An airbag including a connecting body having a base end fixed to the airbag main body and a tip fixed to the pillar portion of the vehicle body;
An interior material covering the passenger compartment side of the pillar portion;
A ceiling interior material that covers the air bag body and the vehicle compartment side of the ceiling member, and is disposed adjacent to the interior material;
An airbag device comprising the reinforcing member according to any one of claims 1 to 4, which reinforces the ceiling interior material. The connected body is
A connected body portion having a proximal end portion connected to the airbag body portion and a distal end portion fixed to the pillar portion;
A held portion that is continuous with the connecting body main body and is held by a reinforcing member;
The airbag apparatus according to claim 5, further comprising: a breakable portion that can be broken by inflating and deploying the airbag body portion to divide the connector body portion and the held portion.

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