JP7227451B2 - vehicle seat - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat provided with an airbag, and more particularly to a vehicle seat in which a guide member for guiding the deployment direction of the airbag is attached to a side frame.

There is known a vehicle seat equipped with a side airbag device that inflates and deploys an airbag provided on the side of the vehicle seat to protect an occupant in the event of a side collision of the vehicle. 1).

The vehicle seat described in Patent Document 1 includes a webbing as a guide member that guides the deployment direction of the airbag. The webbing is attached to the bracket by threading the ends of the webbing and sewing the ends of the webbing.

WO2012/035619

In the above-described prior art, the work of sewing the webbing after passing the webbing as a guide member through the holes of the bracket is required, so the work of attaching the webbing to the bracket is labor intensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat in which a guide member for guiding the deployment direction of an airbag can be easily attached.

According to the vehicle seat of the present invention, the vehicle seat includes a seat back, and the seat back accommodates a side frame extending in the vertical direction of the vehicle seat and an airbag. An airbag module, a guide member that guides the deployment direction of the airbag, and a mounting member that is fixed to the side frame, the guide member having a bag portion at an end thereof, the bag portion It has one opening and is closed except for the opening, and is attached to the attachment member by covering the hooked portion of the attachment member with the bag portion, and the attachment member is A wire member, wherein the hooked portion is a plurality of curved portions formed by bending the wire member, and the guide member is arranged inside the side frame in the width direction of the vehicle seat. and a second webbing arranged outside the side frame, wherein the bag portion of the first webbing is attached to the mounting member from the outside of the side frame. , the bag portion of the second webbing is attached to the attachment member from the inside of the side frame .

In the vehicle seat of the present invention configured as described above, it is possible to attach the attachment member fixed to the side frame so as to cover the hooked portion with the bag provided at the end of the guide member. Therefore, it becomes easy to attach the guide member to the side frame.
In addition, in the above configuration, the wire member is used as the mounting member, and the wire member is bent to form the hooked portion. The hanging state of the covered bag portion becomes stable.
Further, in the above configuration, the first webbing and the second webbing arranged with the side frame interposed therebetween each have a bag portion at the end, and are attached to the mounting member from the outside or inside of the side frame. and, when the airbag is deployed, the first webbing and the second webbing are prevented from coming off from the mounting member.

Further, in the above configuration, the attachment member may be a plate member, and the hooked portion may be a projecting portion projecting from the plate member.
In the above configuration, a plate member is used as the mounting member, and the protruding portion protruding from the plate member is used as the hooked portion. The latching state of the part becomes stable.

Further, in the above configuration, it is preferable that a reinforcing member that reinforces the mounting member is provided, and that the reinforcing member extends in the vertical direction of the vehicle seat.
In the above configuration, since the mounting member is reinforced in the vertical direction of the seat, it is possible to suppress twisting and deformation of the mounting member when the airbag is deployed.

In the above configuration, the second webbing includes a plurality of bag portions, and the first webbing is provided between the plurality of bag portions of the second webbing in the up-down direction of the vehicle seat. is preferably located.
In the above configuration, since the bag portion of the first webbing is sandwiched between the bag portions of the second webbing in the vertical direction of the seat, the state of attachment of the first webbing and the second webbing to the mounting member is stable. It will be

According to the vehicle seat of the present invention, it is possible to attach the attachment member fixed to the side frame so as to cover the hooked portion of the attachment member with the bag provided at the end of the guide member. It becomes easy to attach the member to the side frame.
Further, according to the vehicle seat of the present invention, the wire member is used as the mounting member, and the wire member is bent to form the hooked portion. The hooking state of the bag portion covering the hooked portion becomes stable.
Further, according to the vehicle seat of the present invention, a plate member is used as the mounting member, and the protruding portion protruding from the plate member is used as the hooked portion. The hooking state of the bag portion covering the hooking portion becomes stable.
Further, according to the vehicle seat of the present invention, since the mounting member is reinforced in the vertical direction of the seat, it is possible to suppress twisting and deformation of the mounting member when the airbag is deployed.
In addition, according to the vehicle seat of the present invention, the first webbing and the second webbing, which are arranged with the side frame interposed therebetween, each have a bag portion at the end thereof, and are attached from the outside or the inside of the side frame. Since it is attached to the member, the first webbing and the second webbing are prevented from coming off from the attachment member when the airbag is deployed.
In addition, according to the vehicle seat of the present invention, since the bag portion of the first webbing is sandwiched between the bag portions of the second webbing in the up-down direction of the seat, the first webbing and the second webbing are positioned. The mounting state with respect to the mounting member becomes stable.
In addition, according to the vehicle seat of the present invention, since the bag portions of the first webbing and the second webbing are formed by folding back the extending portions, the bag portions move in a direction opposite to the mounting direction. Even in such a case, detachment from the hooked portion is suppressed.

1 is an external view of a vehicle seat according to an embodiment of the invention; FIG. 1 is a perspective view of a seat frame of a vehicle seat according to one embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and is an explanatory diagram showing a state after the outer webbing is attached to the attachment member according to the embodiment of the present invention; FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1, and is an explanatory diagram showing a state after the inner webbing is attached to the attachment member according to the embodiment of the present invention; It is an explanatory view showing webbings concerning one embodiment of the present invention. FIG. 5B is a cross-sectional view taken along line CC of FIG. 5A, and is an explanatory view showing the configuration of the bag portion of the webbing. It is a rear view of the seat back frame concerning one embodiment of the present invention. It is an explanatory view showing an attachment member concerning one embodiment of the present invention. It is explanatory drawing which shows the state which attached the webbing with respect to the attachment member which concerns on one Embodiment of this invention. FIG. 5 is an explanatory diagram showing a mounting member provided on a seatback frame according to a first modified example of the embodiment of the present invention; FIG. 11 is an explanatory diagram showing a mounting member provided on a seatback frame according to a second modified example of the embodiment of the present invention; FIG. 11 is an explanatory diagram showing a mounting member provided on a seatback frame according to a third modified example of the embodiment of the present invention; FIG. 11 is an explanatory diagram showing a mounting member provided on a seatback frame according to a fourth modified example of the embodiment of the present invention; It is explanatory drawing which shows the webbing which concerns on the modification of embodiment of this invention. It is explanatory drawing which shows the state which attached the webbing which concerns on the modification of embodiment of this invention with respect to the attachment member.

A configuration of a vehicle seat according to one embodiment (hereinafter referred to as the present embodiment) of the present invention will be described below with reference to the drawings. However, the embodiments described below are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. That is, the present invention can be modified and improved without departing from its spirit, and the present invention includes equivalents thereof. In addition, in the following description, the material, shape, and size of the seat component are merely specific examples, and do not limit the present invention.

A vehicle seat mounted on a vehicle will be described as an example of the vehicle seat according to the present embodiment, but the vehicle seat is not limited to this.

In the following description, the term "longitudinal direction" means the longitudinal direction when viewed from a person seated in the vehicle seat, and is the direction that coincides with the running direction of the vehicle. Further, the "seat width direction" means the width direction of the vehicle seat, and coincides with the left-right direction when viewed from the person seated in the vehicle seat. Further, the "vertical direction" means the height direction of the vehicle seat, and corresponds to the vertical direction when the vehicle seat is viewed from the front.

<Structure of Vehicle Seat S>
FIG. 1 shows a perspective view of a vehicle seat S. As shown in FIG. For convenience of illustration, a portion of the vehicle seat S (specifically, the front corner portion of the seat back S1) is shown with the trim cover 4 removed in FIG.

As shown in FIG. 1, the vehicle seat S includes a seat back S1 that serves as a backrest portion that supports the back of the seated person, a seat cushion S2 that serves as a sitting portion that supports the buttocks of the seated person, and is arranged above the seat back S1. The main component is a headrest S3 that supports the head of the seated person.

(Seat frame F)
A seat frame F as shown in FIG. 2 is provided in the vehicle seat S. As shown in FIG. The seat frame F is composed of a seat back frame 1, which is the frame of the seat back S1, and a seat cushion frame 2, which is the frame of the seat cushion S2. The seat cushion frame 2 and the seat back frame 1 are connected via a reclining mechanism (not shown). A seat back S1 and a seat cushion S2 are configured by providing a cushion pad 3 and a trim cover 4 on the outside of the seat back frame 1 and the seat cushion frame 2 . The cushion pad 3 is a urethane base material formed by foam molding using, for example, a urethane foam material, and the trim cover 4 is made of a material such as cloth or leather.

As shown in FIG. 2, the seat back frame 1 includes side frames 10 that are spaced apart in the left and right direction and extend in the vertical direction, an upper frame 21 that connects the upper ends of the side frames 10, and a lower end. It is configured in a frame shape by the lower frame 22 which

The side frame 10 is formed by press-working a sheet metal, and is composed of a substantially plate curved so that the width at the bottom is wider than the width at the top. As shown in FIG. 2, a substantially flat side plate 11, a front edge portion 12 formed by folding the front end portion of the side plate 11 inward in a U-shape, and a rear end portion bent inward in an L-shape. and a trailing edge 13 .

A pillar support portion 23 is provided on the upper frame 21 , and a headrest frame (not shown) is provided on the pillar support portion 23 . A headrest S3 is configured by providing a cushion member outside the headrest frame.

<Airbag module 30>
Further, as shown in FIG. 1, an airbag module 30 is provided inside the side of the seatback S1. The airbag module 30 consists of a caseless airbag module without a module case. The airbag module 30 includes an inflator 31, a folded airbag 32, a retainer 33 that holds the inflator 31, and a wrap material 34 that wraps the airbag 32, as shown in FIGS.

The outer peripheral portion of the inflator 31 is fixed to the retainer 33 and the side frame 10 by bolts 35 erected toward the inside of the vehicle seat S and nuts 36 corresponding to the bolts 35 . Note that the inflator 31 may be fixed to the side frame 10 by an inflator mounting member other than bolts.

The inflator 31 is a device that generates gas when an activation signal is input from a sensor that detects a collision of the vehicle. Inflate to unfold. The airbag 32 is held in a folded state by a wrapping material 34 made of a cloth bag or the like, and the wrapping material 34 is easily torn when the airbag 32 is deployed. In this embodiment, the airbag module 30 is composed of a caseless one, but is not limited to this, and may be composed of a module case.

<Trim cover 4>
As shown in FIGS. 3 and 4, the trim cover 4 has a front gusset 40 covering the left and right bank surfaces from the center of the seat surface and a side gusset 41 extending from the peripheral side to the back. A rear gusset portion (not shown) is sewn to the end of the portion 41 opposite to the front gusset portion 40 to form a bag shape.

A breaking portion 42 is formed at the apex of the bulging bank portion between the front gusset portion 40 and the side gusset portion 41 . The breaking portion 42 is formed by sandwiching the ends of the front gusset portion 40 and the side gusset portion 41 with a first end portion 51a of an inner webbing 51 and a first end 55a of an outer webbing 55 described later. They are sewn together so that they are strong enough to withstand normal use and can be torn by the tensile force of the inflation of the airbag.

<Strength cloth 50>
As shown in FIGS. 3 and 4, the inner webbing 51 (first webbing) and the outer webbing 55 (second webbing) of the webbing 50 are sewn together at the broken portion 42 . The webbing 50 is made of a cloth-like material with low stretchability, guides the deployment direction of the airbag 32 of the airbag module 30 , and serves to transmit the stress due to the expansion of the airbag 32 to the fracture portion 42 .

As shown in FIG. 5A, the webbing 50 includes an inner webbing 51 as a first webbing and an outer webbing 55 as a second webbing at the ends of the front gusset portion 40 and the side gusset portion 41. It is constructed by sewing together at the sandwiched tear line TL.

(Inner Webbing 51)
As shown in FIG. 5A, the inner webbing 51 has a first end 51a on the side of the tear line TL and a second end 51b opposite to the first end 51a. The inner webbing 51 includes a first end portion 51a, an inner base portion 52 serving as a base portion, and an extension portion 53 extending from the inner base portion 52 toward the second end portion 51b. Here, the extending portion 53 includes bag portions 53a and 53b that are attached so as to cover an attachment member 60, which will be described later. Specifically, as shown in FIG. 5B, the bag portion 53a (main pocket 53a) is formed by folding the extending portion 53 toward the first end portion 51a and sewing it, and the bag portion 53b (sub-pocket) is formed by sewing. 53b) is formed by folding the extending portion 53 again in the direction toward the second end portion 51b inside the bag portion 53a and sewing it. Therefore, the bag portion 53b can be bent with respect to the bag portion 53a at the bending line 53c to expose the bag portion 53a.

As shown in FIGS. 3 and 4 , the inner webbing 51 has a first end 51 a sewn together with the broken portion 42 and pulled into the side frame 10 . As will be described later, the bag portions 53a and 53b are hooked to hooked portions of the mounting member 60 provided on the side frame 10. As shown in FIG.

(Outer Webbing 55)
As shown in FIG. 5A, the outer webbing 55 has a first end 55a on the side of the tear line TL and a second end 55b opposite to the first end 55a. The outer webbing 55 includes a first end portion 55a, an outer base portion 56 serving as a base portion, and two extension portions extending from the outer base portion 56 in a direction toward the second end portion 55b, a first extension portion 57. and a second extension 58 . Here, the first extending portion 57 and the second extending portion 58 respectively include bag portions 57a, 57b and bag portions 58a, 58b attached so as to cover the mounting member 60, which will be described later. The bag portions 57a and 57b are formed by folding the first extending portion 57 and stitching, and the bag portions 58a and 58b are formed by folding the second extending portion 58 and stitching. The bag portion of the outer webbing 55 is configured in the same manner as the bag portion of the inner webbing (FIG. 5B) described above, so description thereof will be omitted. The bag portion 57b can be bent with respect to the bag portion 57a at a bending line 57c to expose the bag portion 57a, and the bag portion 58b can be bent with respect to the bag portion 58a at a bending line 58c. It is possible to expose the bag portion 58a.

As shown in FIGS. 3 and 4, the outer webbing 55 has a first end portion 55a sewn together with the rupture portion 42, and the cushion pad 3 and the airbag module 30 disposed on the rear and side surfaces of the airbag module 30. As shown in FIGS. It is drawn into the space between the bag module 30. As will be described later, the bag portion 57a and the bag portion 58a are hooked to the hooked portion of the mounting member 60 provided on the side frame 10. As shown in FIG.

<Mounting member 60>
As shown in FIGS. 3 and 4, the airbag module 30 is attached to the side frame 10. As shown in FIG. 3 and 4, an attachment member 60 is attached to the rear edge portion 13 of the side frame 10 at the rear end in the seat front-rear direction. Here, the mounting member 60 includes an inner webbing 51 (first webbing) and an outer webbing 55 (second webbing), which are guide members for guiding the deployment direction of the airbag 32 of the airbag module 30 . It is a member for attaching the The configuration of the mounting member 60 will be described below with reference to FIGS. 6 to 8. FIG.

As shown in FIGS. 6 and 7, the mounting member 60 is formed of a wire member (for example, a wire member made of resin or metal) having a first end portion 60a and a second end portion 60b. By bending the member, a first curved portion 61, a second curved portion 62, and a third curved portion 63 are formed as hooked portions. As will be described later, the bag portion of the webbing 50 is hooked on the first curved portion 61, the second curved portion 62, and the third curved portion 63, which are hooked portions.

As shown in FIG. 7, each of the first curved portion 61 and the third curved portion 63 is formed to have three convex portions. Specifically, each of the first curved portion 61 and the third curved portion 63 includes two protrusions that protrude toward the inside of the side frame 10 and one protrusion that protrudes toward the outside of the side frame 10. ing. Similarly, the second curved portion 62 has two protrusions that protrude outward from the side frame 10 and one protrusion that protrudes toward the inside of the side frame 10 . In this way, the curved portions 61, 62, and 63, which are the locked portions, are curved so as to have a plurality of convex portions (in other words, the curved portions 61, 62, and 63 are formed with a plurality of curved portions). ), the rigidity is enhanced, and the stability is improved when the bag portion of the webbing 50 is hooked.

As shown in FIG. 7, the first curved portion 61 and the second curved portion 62 of the mounting member 60 are connected by a first connecting portion 64, and the second curved portion 62 and the third curved portion 63 are They are connected by the second connecting portion 65 . The first end portion 60a and the second end portion 60b of the mounting member 60 are attached to the rear edge portion 13 of the side frame 10 by welding or the like.

<Reinforcing member 70>
As shown in FIG. 7, the first curved portion 61, the second curved portion 62, and the third curved portion 63 are connected and reinforced by a reinforcing member 70 extending in the vertical direction of the seat. The reinforcing member 70 is formed of a wire member (for example, a wire member made of resin or metal) having a first end portion 70a and a second end portion 70b. is bent. The reinforcing member 70 includes a reinforcing portion 72 connecting the first curved portion 61, the second curved portion 62, and the third curved portion 63 between the first curved portion 71a and the second curved portion 71b. Since the mounting member 60 is thus reinforced by the reinforcing member 70 in the vertical direction of the seat, the mounting member 60 is prevented from being twisted and deformed when the airbag is deployed. The reinforcing member 70 may or may not be joined to the curved portions 61, 62, 63 of the mounting member 60 by a method such as welding.

Next, attachment of webbing 50 to attachment member 60 will be described with reference to FIG. The inner webbing 51 is arranged inside the side frame 10 , and the outer webbing 55 is arranged outside the side frame 10 . The bag portion 53 a formed at the second end portion 51 b of the inner webbing 51 covers the second curved portion 62 as the hooked portion from the outside of the side frame 10 . It covers the second curved portion 62 as a hooked portion from the inside. In addition, the bag portion 57a formed at the second end portion 55b of the outer webbing 55 covers the first curved portion 61 as the hooked portion from the inside of the side frame 10, and the bag portion 57b is the side frame. It covers the first curved portion 61 as the hooked portion from the outside of 10 . The bag portion 58a also covers the third curved portion 63 as the hooked portion from the inside of the side frame 10, and the bag portion 58b covers the third curved portion as the hooked portion from the outside of the side frame 10. It covers 63. In this way, the inner webbing 51 and the outer webbing 55 of the webbing 50 cover the curved portions 61 , 62 , 63 of the mounting member 60 with the bag portions 53a, 53b, 57a, 57b, 58a, 58b. It is attached to the attachment member 60 .

In this manner, a wire member is used as the mounting member 60, and the wire member is bent to form the curved portions 61, 62, and 63 as the hooked portions. Therefore, the hooked portions can be formed with a simple configuration. In addition, the hooking state of the bag portion covering the hooked portion is stable.

The inner webbing 51 and the outer webbing 55, which are arranged with the side frame 10 interposed therebetween, each have a bag portion at the end, and are attached to the mounting member 60 from the outside or inside of the side frame 10, so that the airbag can be deployed. This prevents the inner webbing 51 and the outer webbing 55 from coming off from the mounting member 60 at times. Specifically, when the airbag is deployed, a force directed toward the inside of the side frame 10 is input to the inner webbing 51, and a force directed toward the outside of the side frame 10 is input to the outer webbing 55. Since the direction of engagement of the bag portion with the curved portion is opposite to the direction of force input, the inner webbing 51 and the outer webbing 55 may come off the mounting member 60 when the airbag is deployed. Suppressed.

As shown in FIG. 8, the outer webbing 55 includes a plurality of bag portions 57a, 58a (57b, 58b). The bag portion 53a (53b) of the inner webbing 51 is located between (58b). Since the bag portion 53a (53b) of the inner webbing 51 is sandwiched between the bag portions 57a, 58a (57b, 58b) of the outer webbing 55 in the vertical direction of the seat, the inner webbing 51 and the outer webbing 55 The mounting state with respect to the mounting member 60 becomes stable.

In addition, since the bag portions of the inner webbing 51 and the outer webbing 55 are formed by folding back the extending portions, in the state shown in FIG. However, it is possible to suppress the detachment from the hooked portion. Specifically, in the state shown in FIG. 8, the bag portion 53a covers the second curved portion 62 from the outside to the inside of the side frame 10 (the mounting direction). Even when it moves in the opposite direction, that is, in the direction from the inside to the outside of the side frame 10 , the bag portion 53 a is prevented from coming off the second curved portion 62 . Similarly, since the bag portions 57a and 58a cover the first curved portion 61 and the third curved portion 63 in the direction from the inside to the outside of the side frame 10 (the mounting direction), the bag portions 57a and 58a do not move in the mounting direction. is the opposite direction, that is, in the direction from the outside to the inside of the side frame 10, the bag portion 57a may come off the first curved portion 61 and the bag portion 58a may move to the third curved portion. Deviating from 63 is suppressed. This effect is further enhanced by forming the bag portions 53b, 57b and 58b as sub-pockets in addition to the bag portions 53a, 57a and 58a as the main pockets.

<Mounting Work of Airbag Module 30>
Here, the operation of mounting the airbag module 30 will be described. First, the cushion pads 3 are arranged in front and sides of the airbag module 30, and further the trim cover 4 covering the cushion pads 3 is arranged. Here, the first end portion 51a of the inner webbing 51 and the first end 55a of the outer webbing 55 are formed at the rupture portion 42 formed at the bulging apex at the bank portion between the front gusset portion 40 and the side gusset portion 41. are sewn together with the

Next, the airbag module 30 is attached to the side frame 10 . Specifically, a bolt 35 projecting from a retainer 33 holding an inflator 31 is passed through a hole formed in the side plate 11 of the side frame 10 and fastened with a nut 36 from the inside of the side plate 11 . As a result, the airbag module 30 and the side frame 10 are fastened together and fixed.

Next, the inner webbing 51 and the outer webbing 55 are attached to the attachment member 60 . Specifically, the inner webbing 51 is attached to the attachment member 60 by covering the second curved portion 62 of the attachment member 60 with the bag portions 53 a and 53 b of the inner webbing 51 . Similarly, the first curved portion 61 of the mounting member 60 is covered with the bag portions 57a and 57b of the outer webbing 55, and the third curved portion 63 is covered with the bag portions 58a and 58b of the outer webbing 55. is attached to the attachment member 60 .

When the inflator 31 of the airbag module 30 is activated, the gas generated by the inflator 31 is injected into the airbag 32 to inflate the airbag 32 . At this time, the airbag 32 is guided by the inner webbing 51 and the outer webbing 55 so that the deployment direction is directed toward the fracture portion 42 . Specifically, as the airbag 32 is inflated, the inner webbing 51 and the outer webbing 55 act to tear the rupture portion 42 , thereby causing the airbag 32 to rupture the rupture portion 42 . From the breaking part 42, it bulges out to the outside of the seat.

As described above, in the vehicle seat S, the second curved portion 62 of the mounting member 60 is covered with the bag portions 53 a and 53 b of the inner webbing 51 , and the first curved portion 61 of the mounting member 60 is covered with the outer webbing 55 . By covering the bag portions 57a and 57b and covering the third curved portion 63 with the bag portions 58a and 58b of the outer webbing 55, the inner webbing 51 and the outer webbing 55 can be easily attached to the side frame 10. be.

<Modification>
The invention is not limited to the embodiments described above. In the following, first to fourth modifications of the mounting member 60 will be described with reference to FIGS. 9 to 12, and modifications of the webbing 50 will be described with reference to FIGS. 13 and 14. FIG.

(First modification)
FIG. 9 is an explanatory diagram showing a mounting member 160 according to a first modified example. The mounting member 160 shown in FIG. 9 is similar to the embodiment shown in FIG. 7 except that it is not reinforced by reinforcing member 70 . Since the mounting member 160 according to the first modified example does not have the reinforcing member 70 , it is easy to cover the first curved portion 161 , the second curved portion 162 , and the third curved portion 163 with the bag portion of the webbing.

(Second modification)
FIG. 10 is an explanatory diagram showing a mounting member 260 according to a second modified example. In the mounting member 60 shown in FIG. 9, each of the first curved portion 61, the second curved portion 62, and the third curved portion 63 is formed to have three convex portions, but the mounting member 260 shown in FIG. is formed so that each of the first curved portion 261, the second curved portion 262, and the third curved portion 263 has one convex portion. According to such an attachment member 260, the step of bending the wire member can be simplified, so the attachment member can be easily manufactured. Also, as shown in FIG. 10, the reinforcing member 270 may have a curved shape. In the example shown in FIG. 10 , the reinforcing member 270 includes a first reinforcing portion 271 that reinforces the first curved portion 261 , a second reinforcing portion 272 that reinforces the second curved portion 262 , and a third reinforcing portion that reinforces the third curved portion 263 . A reinforcing portion 273 is provided.

(Third modification)
FIG. 11 is an explanatory diagram showing a mounting member 360 according to a third modified example. A mounting member 360 shown in FIG. 11 is formed of a first plate member 361 , a second plate member 362 and a third plate member 363 . The first plate member 361 has a first protrusion 361a that protrudes inward from the side frame 10, the second plate member 362 has a second protrusion 362a that protrudes outward from the side frame 10, and a third plate member. 363 has a third protrusion 363a that protrudes inside the side frame 10 . Since each protruding portion as the hooked portion is covered with the bag portion of the webbing, the hooked portion can be formed with a simple structure, and the hooked state of the bag portion covering the hooked portion is stable. become a thing.

(Fourth modification)
FIG. 12 is an explanatory diagram showing a mounting member 460 according to a fourth modified example. A mounting member 460 shown in FIG. 12 is formed of a first plate member 461 , a second plate member 462 and a third plate member 463 . The first plate member 461 has a first protrusion 461a that protrudes inward from the side frame 10, the second plate member 462 has a second protrusion 462a that protrudes outward from the side frame 10, and a third plate member. 463 has a third protrusion 463a that protrudes inside the side frame 10 . The first plate member 461, the second plate member 462, and the third plate member 463 are connected and reinforced by a reinforcing member 470 extending in the vertical direction of the seat. Also, the first plate member 461 , the second plate member 462 and the third plate member 463 are attached to the side frame 10 via the reinforcing member 470 .

In the above embodiment, the vehicle seat S is described as an example of a front seat as a front seat of a vehicle, but the vehicle seat S is not limited to this, and corresponds to a rear seat of a vehicle. It can also be used as a second-row middle seat or a third-row rear seat in a vehicle with three rows of seats in the front-rear direction.

In the above-described embodiment, an example in which the airbag module 30 is arranged on one side of the vehicle seat S has been described. It is also possible to arrange the airbag module 30 on the side, or to arrange the airbag module 30 on the side opposite to the direction shown in FIG.

Further, in the webbing 50 in the above embodiment, the inner webbing 51 has one bag portion 53a, and the outer webbing 55 has two bag portions 57a and 58a. It is also possible to configure the webbing 51 to have two or more bag portions, and the outer webbing 55 to have one or three or more bag portions. Similarly, the number and shape of the curved portions of the mounting member 60 can be changed as appropriate.

In addition, in the webbing 50 in the above embodiment, the bag portion is formed by folding back and stitching the extending portions of each webbing, but the method of forming the bag portion is not limited to this. The bag portions may be appropriately formed so as not to interfere with each other when the bag portions cover the hooked portion. Moreover, it is also possible to form the bag portion by folding back and welding the extending portions of the webbings.

In the above embodiment, as shown in FIG. 8, the inner webbing 51 and the outer webbing 55 overlap both the mounting member 60 and the reinforcing member 70 when viewed from the rear side of the seat. It is also possible to arrange the inner webbing 51 and the outer webbing 55 between the member 60 and the reinforcing member 70 . In this case, since the inner webbing 51 and the outer webbing 55 are sandwiched between the mounting member 60 and the reinforcing member 70, the attachment state of the inner webbing 51 and the outer webbing 55 is stabilized.

Further, in the above-described embodiment, as shown in FIGS. 6 and 7, the reinforcing portion 72 of the reinforcing member 70 is formed to extend linearly in the vertical direction of the seat. It is also possible to form the reinforcing portion 72 so as to extend in the seat vertical direction while curving in the seat width direction. The arrangement of the reinforcing member 70 with respect to the mounting member 60 can be appropriately changed as long as the mounting member 60 is prevented from being twisted and deformed.

(Modification of webbing)
Further, in the above embodiment, as shown in FIGS. 5A and 5B, each webbing has bags 53a, 57a, 58a (main pockets) and bags 53b, 57b, 58b (sub-pockets). However, as shown in FIGS. 13 and 14, like the webbing 50X according to the modification, only the bag portions 53a, 57a, 58a (main pockets) are configured without providing sub-pockets. is also possible.

As described above, the seat frame according to the present embodiment has been described as an example of a seat frame for a vehicle seat mounted on a vehicle. The seat frame according to the present embodiment is not limited to the seat frame of a vehicle seat, but is a seat configured by covering a cushion pad placed on the seat frame with a cover member. There are no particular restrictions on the use of the seat frame as long as it is a seat frame that employs a structure that is latched to the frame. For example, the seat frame of the present invention can be used as a seat frame for ordinary seats used in facilities or buildings, or as a seat frame for vehicle seats used in vehicles other than vehicles.

S Vehicle seat S1 Seat back S2 Seat cushion S3 Headrest F Seat frame 1 Seat back frame 2 Seat cushion frame 3 Cushion pad 4 Trim cover 10 Side frame 11 Side plate 12 Front edge 13 Rear edge 21 Upper frame 22 Lower frame 23 Pillar Supporting portion 30 Airbag module 31 Inflator 32 Airbag 33 Retainer 34 Wrap material 35 Bolt 36 Nut 40 Breaking portion 41 Front gusset 42 Side gusset 50, 50X Webbing (guide member)
51 Inner webbing (1st webbing)
51a first end portion 51b second end portion 52 inner base portion 53 extension portion 53a bag portion (main pocket)
53b bag part (sub-pocket)
53c Fold line TL Tear line 55 Outer webbing (second webbing)
55a first end 55b second end 56 outer base 57 first extension 57a bag (main pocket)
57b bag part (sub-pocket)
57c Bending line 58 Second extension 58a Bag (main pocket)
58b bag part (sub-pocket)
58c bending line 60 attachment member 60a first end 60b second end 61 first curved portion 62 second curved portion 63 third curved portion 64 first connecting portion 65 second connecting portion 70 reinforcing member 70a first end 70b Second end 71a First bent portion 71b Second bent portion 72 Reinforcing portions 160, 260 Mounting member 161, 261 First curved portion 162, 262 Second curved portion 163, 263 Third curved portion 270 Reinforcement member 271 First reinforcement Part 272 Second reinforcing part 273 Third reinforcing part 360, 460 Mounting member 361, 461 First plate member 361a, 461a First projecting part 362, 462 Second plate member 362a, 462a Second projecting part 363, 463 Third plate Member 363a, 463a Third protrusion 470 Reinforcing member

Claims (4)

A vehicle seat comprising a seat back,
The seatback includes a side frame extending in the vertical direction of the vehicle seat, an airbag module for storing an airbag, a guide member for guiding the deployment direction of the airbag, and fixed to the side frame. a mounting member;
The guide member has a bag portion at its end,
The bag part has one opening and is closed except for the opening,
The bag portion is attached to the mounting member by covering the hooked portion of the mounting member ,
The mounting member is a wire member,
The hooked portion is a plurality of curved portions formed by curving the wire member,
The guide member includes a first webbing that is arranged inside the side frame and a second webbing that is arranged outside the side frame in the width direction of the vehicle seat,
The bag portion of the first webbing is attached to the attachment member from the outside of the side frame,
The vehicle seat , wherein the bag portion of the second webbing is attached to the attachment member from the inside of the side frame . The mounting member is a plate member,
2. The vehicle seat according to claim 1, wherein the hooked portion is a projecting portion projecting from the plate member. a reinforcing member that reinforces the mounting member;
3. The vehicle seat according to claim 1 , wherein the reinforcing member extends in the vertical direction of the vehicle seat. The second webbing includes a plurality of bag portions,
4. The bag portion of the first webbing is positioned between the plurality of bag portions of the second webbing in the vertical direction of the vehicle seat. 1. Vehicle seat according to item 1 .

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