Source: https://patents.google.com/patent/WO2011152530A1/en
Timestamp: 2020-05-30 09:13:52
Document Index: 605231750

Matched Legal Cases: ['Application No. 2010', 'Application No. 2010', 'art 13', 'art 24', 'arts 13', 'arts 13', 'arts 13', 'art 70', 'art 13', 'art 70', 'art 126', 'arts 113', 'arts 113', 'art 170', 'art 113', 'art 113', 'art 113', 'art 113', 'art 21', 'art 73', 'art)\n113']

WO2011152530A1 - Vehicle seat - Google Patents
WO2011152530A1
WO2011152530A1 PCT/JP2011/062825 JP2011062825W WO2011152530A1 WO 2011152530 A1 WO2011152530 A1 WO 2011152530A1 JP 2011062825 W JP2011062825 W JP 2011062825W WO 2011152530 A1 WO2011152530 A1 WO 2011152530A1
PCT/JP2011/062825
状元 山木
尚人 奥
拓也 堀
聖士 宮口
和善 荒田
2010-06-04 Priority to JP2010129222A priority Critical patent/JP5202580B2/en
2010-06-04 Priority to JP2010-129222 priority
2010-06-04 Priority to JP2010-129223 priority
2010-06-04 Priority to JP2010129223A priority patent/JP5277205B2/en
2011-06-03 Application filed by 本田技研工業株式会社, 株式会社タチエス filed Critical 本田技研工業株式会社
2011-12-08 Publication of WO2011152530A1 publication Critical patent/WO2011152530A1/en
230000003014 reinforcing Effects 0 claims description 65
A vehicle seat comprises a seat back frame provided with a pair of side frame sections disposed on both left and right sides of the seat in the widthwise direction of the seat; an outer load transmission block disposed further toward the outside in the widthwise direction of the seat back frame than a side frame section of the seat back frame and transmitting an impact load, which is inputted from a side of the vehicle body, to the seat back frame; a protrusion section protruding to the outside of the seat back frame in the widthwise direction thereof from the side surface of the side frame section located outside the seat back frame in the widthwise direction thereof; a side airbag device disposed at the front surface of the protrusion section; and a fitting section formed in the outer load transmission block and receiving the protrusion section. The protrusion section has a box-like shape having a support surface at the surface facing the side airbag device.
[Name of invention determined by ISA based on Rule 37.2] Vehicle seat
The present invention relates to a vehicle seat and a seat back frame structure including a component that transmits an impact load input from the side of the vehicle to an inner region in the width direction of the vehicle body.
This application claims priority based on Japanese Patent Application No. 2010-129222 filed in Japan on June 4, 2010, and Japanese Patent Application No. 2010-129223 filed on June 4, 2010 in Japan. And the contents thereof are incorporated herein.
A structure is known in which an impact load input from the side of a vehicle at the time of a collision is transmitted to a vehicle body floor via a seat (see, for example, Patent Document 1). Specifically, in the vehicle seat described in Patent Literature 1, the frame portion (plate material and upper cross member) of the seat is extended outward in the vehicle width direction from the seat back frame so as to cover the extended portion. Load transmission block is installed.
In this seat back frame, when an impact load is input from the side of the vehicle body, the load is transmitted to the side frame portion on the outer side in the vehicle width direction via the load transmission member, and further from the side frame portion to the back side. Is transmitted to the inner side frame portion through the plate member and the upper cross member.
In addition, a structure is known in which an impact load input from the side of a vehicle at the time of a collision is transmitted to a vehicle body floor via a seat (see, for example, Patent Document 3).
Specifically, the seat back frame described in Patent Document 3 protrudes toward the outside in the vehicle width direction from the pair of side frame portions disposed on both sides in the vehicle width direction and the side frame portions on the outer side in the vehicle width direction. A load transmitting piece and a load transmitting member extending in an inclined posture from a height substantially the same as the load transmitting piece in the side frame portion on the outer side in the vehicle width direction to a lower portion of the side frame portion on the inner side in the vehicle width direction. Yes. Moreover, the reclining shaft which is arrange | positioned so that it may bridge between side frame parts and supports a side frame part rotatably is provided in the lower end part of the side frame part.
According to this configuration, the impact load input to the lower portion of the vehicle body side wall is transmitted from the side frame portion on the outer side in the vehicle width direction to the side frame portion on the inner side in the vehicle width direction via the reclining shaft. The impact load input to the upper part of the vehicle is transmitted from the load transmission piece to the side frame portion on the inner side in the vehicle width direction via the load transmission member.
JP 2009-46112 A JP 7-267038 A JP 2009-6895 A
By the way, the structure provided with the side airbag apparatus which expands a bag body between the passenger | crew who seated on the seat | sheet and the vehicle body side wall is known as a vehicle seat (for example, refer patent document 2). . In the side airbag device, an inflator that generates gas upon detection of an impact and a folded bag body that is expanded by receiving the gas pressure of the inflator are assembled as a module, and the module is a side frame portion of the seat back frame. Can be attached to.
In recent years, in a vehicle seat in which a load transmission block is installed in a side frame portion of a seat back frame, a configuration in which a side airbag device is also installed in the side frame portion has been studied.
Here, when the side airbag device is arranged in the configuration of Patent Document 1 described above, a load transmission block that receives the side of the vehicle body that has moved to the vehicle interior side in the event of a vehicle side collision, The layout of the side airbag device deployed between the side of the vehicle body and the occupant is important.
Accordingly, the present invention provides a vehicle seat capable of improving the load transmission efficiency from the side of the vehicle body to the seat back frame and capable of installing the load transmission member and the side airbag device on the side portion of the seat back frame. With the goal.
Further, in the configuration of Patent Document 3 described above, the load transmission member is provided independently of the seat back frame so as to bridge between the side frame portions. The load transmission efficiency was not high enough.
On the other hand, in order to secure the bending rigidity of the sheet reinforcing member, an improvement such as increasing the plate thickness of the sheet reinforcing member can be considered, but this leads to an increase in weight of the vehicle and a complicated configuration. is there.
Therefore, an object of the present invention is to provide a seat back frame structure capable of improving the load transmission efficiency from the side of the vehicle body to the seat back frame with a simple configuration that is reduced in weight.
(1) A vehicle seat according to an aspect of the present invention includes: a seat back frame including a pair of side frame portions disposed on both left and right sides in the seat width direction; and more than the side frame portion of the seat back frame. An outer load transmission block disposed on the outer side in the width direction of the seat back frame and transmitting an impact load input from the side of the vehicle body to the seat back frame; and a side surface of the side frame portion on the outer side in the width direction of the seat back frame; A protruding portion that protrudes outward in the width direction of the seat back frame; a side airbag device that is disposed on the front surface of the protruding portion; and a fitting portion that is formed on the outer load transmission block and receives the protruding portion; And the protrusion has a box shape having a support surface on a surface facing the side airbag device.
(2) The vehicle seat may be configured as follows: a lower reinforcing plate that connects lower portions of the pair of side frame portions.
(3) The said vehicle seat may be comprised as follows: It is arrange | positioned at the upper part of the said lower reinforcement plate, and it is a seat width direction from the said side frame part of the outer side among a pair of said side frame parts. It further includes a support plate having an inclined reinforcing portion that is inclined inward and downward.
(4) The vehicle seat may be configured as follows: an end portion in the width direction of the inclined reinforcing portion of the support plate is connected to the outer side frame portion, and the support plate The lower edge is connected over substantially the entire region of the lower reinforcing plate in the sheet width direction.
(5) The inclined reinforcing portion of the support plate includes a reinforcing plate.
(6) The inclined reinforcing portion and the reinforcing plate form a closed cross-sectional shape.
(7) A lower reinforcing portion extending in the seat width direction is further provided, and the support plate and the lower reinforcing plate form a closed cross-sectional shape.
(8) The inclined reinforcing portion of the support plate includes a reinforcing plate, and the supporting plate includes the inclined reinforcing portion formed in a closed cross-sectional shape by the supporting plate and the reinforcing plate, and the supporting plate and the lower reinforcing member. A lower reinforcing portion that is formed in a closed cross-sectional shape by a plate and extends in the sheet width direction.
According to the invention described in (1) above, the outer load transmission block can be fixed in a state where the box-shaped protrusion is received by the fitting portion of the outer load transmission block. Thus, for example, even when an impact load is input to the outer load transmission block from the diagonally forward or diagonally rear (direction intersecting the vehicle width direction), the displacement of the outer load transmission block or the deformation of the protrusion Etc. can be suppressed. Therefore, the collision load can be promptly transmitted to the inner side in the vehicle width direction without being affected by the input direction of the collision load such as an oblique direction as well as the collision load from the side.
In addition, by arranging the side airbag device in front of the projecting part, the reaction force when the side airbag device is deployed can be reliably received by the projecting part, realizing faster deployment of the bag body. it can. As a result, a quicker deployment of the bag can be realized.
According to the inventions described in the above (2), (3), and (4), the support plate and the lower reinforcing plate are connected to each other over substantially the entire region in the seat width direction, and are inclined via the outer side frame portion. The impact load transmitted to the reinforcing portion is transmitted to the inner side frame portion via the lower reinforcing plate while being transmitted to substantially the entire area of the load path structure including the support plate and the lower reinforcing plate. That is, the impact load input to the inclined reinforcing portion is received almost in the entire area of the load path structure, and after being dispersed in the entire area of the load path structure, it is transmitted to the inner side frame portion via the lower reinforcing plate. become.
Thereby, the collision load can be quickly transmitted to the inside in the vehicle width direction, and the load transmission efficiency for the seat back frame structure can be improved. In this case, since the load transmission efficiency can be improved, it is not necessary to increase the thickness of the load path structure in order to ensure bending rigidity. Therefore, it is possible to provide a load path structure having a simple configuration that is relatively thin and light in weight.
According to the invention described in the above (5), by providing the inclined reinforcing portion with the reinforcing plate, the bending rigidity of the inclined reinforcing portion can be improved and the deformation of the seat back frame structure can be suppressed. Therefore, the impact load can be effectively transmitted to the inner side frame portion.
According to the invention described in (6) above, by forming a closed cross-sectional shape with the inclined reinforcing portion and the reinforcing plate, the bending rigidity of the load path structure is improved, and the deformation of the seat back frame structure is more reliably suppressed. it can.
According to the invention described in the above (7), the bending rigidity of the load path structure is improved by providing the lower reinforcing part formed in the closed cross-sectional shape by the support plate and the lower reinforcing plate, and the seat back frame structure Deformation can be suppressed more reliably.
According to the invention described in (8) above, by forming two closed cross-sectional shapes between the side frame portions, the bending rigidity of the load path structure is improved, and the seat back frame structure is more reliably deformed. Can be suppressed.
FIG. 1 is a rear view of the left side of the front seat compartment of the vehicle seat according to the first embodiment of the present invention. FIG. 2 is a perspective view of the vehicle seat according to the embodiment as viewed obliquely from the front side. FIG. 3 is a perspective view of the skeletal part of the vehicle seat according to the embodiment as viewed obliquely from the front side. FIG. 4 is an exploded perspective view of a skeleton part of the seat back according to the embodiment. FIG. 5 is an enlarged perspective view of a skeleton part of the seat back according to the embodiment. FIG. 6 is an enlarged perspective view of the skeleton part of the seat back in a state where the back pan according to the embodiment is removed. FIG. 7 is a perspective view of the skeleton of the seat back according to the embodiment as viewed from the rear side. FIG. 8 is a cross-sectional view taken along line AA in FIG. FIG. 9 is a sectional view taken along line BB in FIG. FIG. 10 is a rear view of the left side of the front seat compartment of the vehicle seat according to the second embodiment of the present invention. FIG. 11 is a perspective view of the vehicle seat according to the embodiment as viewed obliquely from the front side. FIG. 12 is a perspective view of the skeletal part of the vehicle seat according to the embodiment as viewed obliquely from the front side. FIG. 13 is an exploded perspective view of a skeleton part of the seat back according to the embodiment. FIG. 14 is an enlarged perspective view of a skeleton part of the seat back according to the embodiment. FIG. 15 is an enlarged perspective view of a skeleton portion of the seat back in a state where the back pan according to the embodiment is removed. FIG. 16 is a perspective view of the skeleton part of the seat back according to the embodiment viewed from the rear side. FIG. 17 is a cross-sectional view taken along line AA in FIG. It is sectional drawing which follows the BB line of FIG.
Hereinafter, a vehicle seat according to a first embodiment of the present invention will be described with reference to the drawings. The embodiment is specifically described in order to better understand the gist of the invention, and does not limit the invention unless otherwise specified.
FIG. 1 is a rear view of the left side of the front seat compartment. In the drawing, the arrow FR indicates the front of the vehicle, and the arrow OUT indicates the outer side in the width direction of the vehicle.
As shown in FIG. 1, the vehicle body floor 9 is formed with a floor tunnel 12 that protrudes upward along the vehicle body longitudinal direction at the center in the vehicle width direction. A pair of left and right front seats 1, 1 are arranged on both sides of the floor tunnel 12.
A side sill 10 having a closed cross-sectional structure joined to both side edges of the vehicle body floor 9 is provided along the longitudinal direction of the vehicle body on the outer sides of the left and right seats 1 and 1, and the lower part of the center pillar 11 is connected to the side sill 10. Has been. Here, in FIG. 1, only the skeleton of the sheet 1 is shown for convenience of explanation (the same applies to the following drawings).
On the floor tunnel 12 and between the left and right sheets 1 and 1, a console box 5 having a storage portion 5a recessed on the upper surface side is fixed.
FIG. 2 is a perspective view of the vehicle seat 1 installed on the front seat side of the vehicle as seen from the diagonally forward side, and FIG. 3 is a perspective view of the frame portion of the vehicle seat 1 as seen from the diagonally forward side. It is. In the following description, the width direction is the same as the vehicle width direction (seat width direction) unless otherwise specified.
As shown in FIG. 2, the vehicle seat 1 includes a seat cushion 2 that supports an occupant's buttocks, a seat back 3 that is connected to a rear end portion of the seat cushion 2 and supports an occupant's waist and back, A headrest 4 (only the skeleton is shown in FIG. 3) is supported by the upper portion of the seat back 3 and supports the head and neck of the occupant.
As shown in FIG. 3, the seat cushion 2 includes a seat cushion frame 7 to which a rear cross member 6 extending in the width direction is attached to a rear end portion, and the seat cushion frame 7 is seat rails 8, 8. It is attached to the vehicle body floor 9 through the slidable forward and backward.
The seat cushion frame 7 is a member formed in a U shape, and the left and right rear ends extend slightly obliquely upward, and a cushion spring 17 is stretched inside (see FIG. 3).
(Seat back frame structure)
FIG. 4 is an exploded perspective view of the skeleton part of the seat back 3.
As shown in FIGS. 3 and 4, the seat back 3 includes a seat back frame 13 having a substantially rectangular frame shape including an upper frame portion 13a, left and right side frame portions 13c and 13d, and a lower frame portion 13b. The lower end of the seat back frame 13 is coupled to the rear end portion of the seat cushion frame 7 so as to be tiltable.
The upper frame portion 13a is provided with a substantially U-shaped pipe material, and a support pipe 44 that supports the headrest 4 so as to be movable up and down is attached to the center of the upper side portion extending in the width direction. Moreover, the upper cross member 15 is provided in the upper frame part 13a so that the both ends of the width direction may be bridged. The upper cross member 15 is curved backward from both sides in the width direction to the center portion, and the base end side of the support pipe 44 described above is fixed.
The left and right side frame portions 13c and 13d include a panel material having a substantially U-shaped cross section in the horizontal direction, the region above the substantially central portion in the vertical direction has a narrow front-rear width, and is below the substantially central portion. The side region has a relatively wide front-rear width. The narrower upper regions of the side frame portions 13c, 13d are welded and fixed to the corresponding side portions of the upper frame portion 13a so as to wrap from the outside in the width direction at the U-shaped cross section. A hinge portion 16 connected to the rear end portion of the seat cushion frame 7 and a reclining mechanism 18 for adjusting the tilt angle of the seat back frame 13 are attached to the lower end sides of the side frame portions 13c and 13d. It has been. The left and right reclining mechanisms 18 are coupled to each other by an operating rod 45 extending in the width direction.
The lower frame portion 13b includes a panel material having a substantially S-shaped cross section in the vertical direction (see FIG. 8), and extends in the width direction so as to surround the operating rod 45 from the rear in the upper half portion thereof. Both end portions are connected to the lower ends of the left and right side frame portions 13c and 13d.
According to the left and right side frame portions 13c and 13d, the front wall 31a and the rear wall 31b that are bent inward in the width direction are connected to the front and rear of the side wall 30 on the outer side in the width direction, respectively. As described above, it is formed so that the width on the upper side is narrower than the substantially central portion and the width on the lower side is wide. Specifically, the rear end side of the side wall 30 is formed substantially straight over the entire upper and lower sides, but the front end side is formed substantially straight from the upper part to the central area in the vertical direction, and gradually decreases downward from the central area. Curved to bulge forward. Therefore, the front wall 31a of the side frame portions 13c and 13d is provided with a curved surface that follows the curved shape on the front end side of the side wall 30.
FIG. 5 is an enlarged perspective view of the skeleton part of the seat back 3.
As shown in FIGS. 3 to 5, a back pan 47 made of a plate material made of, for example, resin and curved in a three-dimensional manner is disposed between the side frame portions 13c and 13d. Specifically, the back pan 47 includes a pelvis support 22 having a U-shaped horizontal cross section, and extends from both sides of the pelvis support 22, and is on the front wall 31 a side of the side frame portions 13 c and 13 d. To the outer surface of the side wall 30.
The pelvis support 22 extends on the rear side in the front-rear direction of the side frame portions 13c and 13d so as to bridge between the side frame portions 13c and 13d, and both sides are side walls 30 of the side frame portions 13c and 13d. It extends toward the front along the inner surface. In other words, the pelvic support 22 supports the pelvis from the occupant to the lower periphery of the lumbar vertebra from the rear when the occupant is seated on the seat. The pelvic support 22 is a central portion in the width direction, and a lower edge portion is fastened and fixed to the lower frame portion 13b by screws or the like.
Moreover, the front-end | tip part 24 is fastened and fixed with the bis | screw etc. on the outer surface side of the side part frame parts 13c and 13d.
(Load path structure)
6 is an enlarged perspective view of the skeleton portion of the seat back 3 with the back pan 47 removed, and FIG. 7 is a perspective view of the seat back 3 as seen from the rear side. FIG. 8 is a cross-sectional view taken along the line AA in FIG.
As shown in FIGS. 6 and 7, a load path plate 25 is provided between the back pan 47 and the lower frame portion 13 b in the front-rear direction so as to overlap the back pan 47 in the front-rear direction. The load path plate 25 is made of, for example, metal and has a substantially triangular shape when viewed from the front-rear direction. Specifically, the load path plate 25 has a channel section 26 that has a U-shaped vertical cross section and extends in a substantially Y shape when viewed from the front-rear direction. The channel portion 26 has a U-shaped lower channel 27 formed in a cross-sectional view so as to bridge between the side frame portions 13c and 13d, and a U-shaped cross-sectional view branched from a midway portion in the extending direction of the lower channel 27. The inclined channel 28 is provided.
As shown in FIGS. 4, 6, and 7, the lower channel 27 is disposed so that the opening portion of the U-shaped cross section faces rearward and is engaged with the upper half of the lower frame portion 13b. The entire region of the lower edge portion and the upper edge portion is welded and fixed to the lower frame portion 13b. Specifically, the lower channel 27 has an upper edge portion fixed to the upper edge portion of the lower frame portion 13b, and a lower edge portion fixed to the front surface of the lower frame portion 13b. As a result, the lower channel 27 and the lower frame portion 13b form a closed cross-section structure portion H1 having a rectangular shape in cross section, extending along the width direction between the side frame portions 13c and 13d, and the side frame portion 13c. , 13d contributes to load transmission.
Further, according to the lower channel 27, the outer end in the width direction is welded and fixed to the inner surface of the side wall 30 of the side frame portion 13c, while the inner end of the width direction is the inner surface of the side wall 30 of the side frame portion 13d. There is a slight gap between them. Specifically, the end portion on the inner side in the width direction of the lower channel 27 extends to the inner side of the center portion in the width direction of the lower frame portion 13b, and overlaps the rear wall 31b of the side frame portion 13d when viewed from the front-rear direction. To the position. That is, the lower channel 27 and the lower frame portion 13b are connected over substantially the entire width direction of the lower frame portion 13b. Therefore, also in the above-described closed cross-section structure portion H1, the end portion on the outer side in the width direction is in contact with the inner surface of the side wall 30 of the side frame portion 13c, while the end portion on the inner side in the width direction is on the side wall 30 of the side frame portion 13d. There is a slight gap between the inner surface. The lower channel 27 and the lower frame portion 13b are connected in a range from the outer end in the width direction of the lower frame portion 13b to the inner side of the central portion in the width direction. The lower channel 27 and the lower frame portion 13b overlap with the lower frame portion 13b in the front-rear direction in substantially the entire region in the width direction of the lower end of the lower channel 27.
The inclined channel 28 is formed continuously from the lower channel 27 and extends obliquely upward from the branching position K with the lower channel 27 toward the outer side in the width direction. A mounting piece 28b (see FIG. 6) bent outward is formed at the outer end in the width direction of the inclined channel 28, and this mounting piece 28b is fixed to the inner surface of the side wall 30 of the side frame portion 13c. ing.
In this case, the end surface on the outer side in the width direction of the inclined channel 28 is disposed opposite to a load transmission block 21 described later with the side frame portion 13c interposed therebetween. The inclined channel 28 is formed wider as it goes outward in the width direction, and a bead 28 a bulging outward is formed on the peripheral surface of the inclined channel 28.
Further, between the lower channel 27 and the inclined channel 28, the flat plate portion 29 is connected to each of the channels 27, 28 so as to bridge an area surrounded by the upper edge portion of the lower channel 27 and the lower edge portion of the inclined channel 28. Are integrally formed. As a result, the inclined channel 28 and the lower frame portion 13 b are connected to each other in the entire extending direction of the inclined channel 28 via the lower channel 27 and the flat plate portion 29.
Further, a reinforcing plate 32 is provided on the rear surface side of the load path plate 25 so as to cover the opening portion of the inclined channel 28. The reinforcing plate 32 is a plate material formed in an L shape in a cross-sectional view in the vertical direction, and is formed so that the upper side wraps around to the upper edge of the inclined channel 28. Specifically, the reinforcing plate 32 follows a base portion 32a (see FIG. 7) whose base end portion is welded and fixed to the rear surface of the lower frame portion 13b, and the inclined channel 28 as it goes outward in the width direction from the base portion 32a. And an inclined portion 32b that is inclined. The inclined portion 32 b is welded and fixed at the upper edge portion over the entire upper edge portion of the inclined channel 28, and the lower edge portion is welded and fixed to the rear surface of the flat plate portion 29. As a result, the reinforcing plate 32 and the inclined channel 28 form a closed cross-section structure portion H2 (see FIG. 8) having a rectangular shape in cross section extending obliquely upward from the branch position K toward the outer side in the width direction. It contributes to load transmission between the frame parts 13c and 13d.
That is, in this embodiment, between the side frame portions 13c and 13d, a closed cross-section structure portion H1 extending along the width direction, and a branch from the closed cross-section structure portion H1, and upward toward the outer side in the width direction. It has a closed cross-section structure portion H2 that is inclined, and has two closed cross-section structure portions H1 and H2 in the vertical direction outside the width direction of the seat 1. The load path plate 25, the lower frame portion 13b, and the reinforcing plate 32 constitute a load path structure.
(Surface elastic body and support wire)
Here, as shown in FIGS. 3 and 5, the opening 14 opened in the front-rear direction between the back pan 47 and the upper cross member 15 has a space between the back pan 47 and the upper cross member 15. A support wire and a planar elastic body 60 are provided so as to be bridged.
First, the support wire 20 is, for example, a metal wire bent in a crank shape, and elastically connects between the hook 19 formed on the pelvis support 22 of the back pan 47 and the side frame portions 13c and 13d. It is provided so that it may span. Specifically, the support body wire 20 includes a locking portion 35 (see FIG. 4) locked to the hook 19 of the back pan 47 and an extending portion extending along the width direction from both ends of the locking portion 35. 36 and a folded portion 37 (see FIG. 5) formed at the tip of the extending portion 36 and connected to the side frame portions 13c and 13d, respectively.
The hook 19 described above of the back pan 47 is a tongue-like member that is formed such that the upper part of the pelvis support 22 is cut and raised and extends downward.
The locking portion 35 is bent and formed in a substantially U shape that opens upward. The bottom portion of the locking portion 35 is locked to the hook 19 of the back pan 47, and both ends of the bottom portion are bent upward. Has been.
The extending portion 36 has a proximal end extending from both ends of the locking portion 35 toward the side frame portions 13c and 13d, and a distal end side thereof being bent forward, and side walls of the side frame portions 13c and 13d. It extends along the inner surface of 30.
The folded portion 37 is formed such that the distal end side of the extending portion 36 is folded back, and wraps around the front wall 31a of the side frame portions 13c and 13d, and enters the through hole 41 formed in the front wall 31a. Has been inserted. Thereby, the both ends of the support body wire 20 are connected with the support frame parts 13c and 13d.
Further, a planar elastic body 60 that elastically bridges the support wire 20 and the upper cross member 15 is provided between the support wire 20 in the opening 14 and the upper cross member 15 described above. The planar elastic body 60 includes a wire made of metal or the like stretched in a lattice shape between the upper cross member 15 and the support body wire 20, and a pair of bridges that bridge the upper cross member 15 and the support body wire 20. A bolster wire 61, a plurality of stringer wires 62 that bridge the bolster wires 61, and a connecting wire 63 that connects the stringer wires 62 together.
The bolster wires 61 extend in parallel to each other along the vertical direction on both sides in the width direction of the sheet 1. The bolster wire 61 is inserted into and fixed to a pair of attachment pieces 64 formed at the upper cross member 15 at the upper end portion, and the lower end portion together with the extending portions 36 of the support wire 20 by the binding device 65. It is bundled. At this time, the bolster wire 61 and the support wire 20 are bundled in the binding device 65 so as to be rotatable around the axes of the wires 20 and 61.
Each stringer wire 62 extends along the width direction, and both ends thereof are wound and fixed to each bolster wire 61. The stringer wires 62 are arranged in parallel along the vertical direction, and the pitch between the stringer wires 62 is set narrower in the lower part than in the upper part. For this reason, the planar elastic body 60 is set to increase in rigidity stepwise from the upper part to the lower part.
The connecting wire 63 extends in parallel with the bolster wire 61, and is arranged so as to connect the central portions in the extending direction of the stringer wires 62.
The wire diameters of the wires 61 to 63 are formed smaller than the wire diameter of the support wire 20 described above. Therefore, the planar elastic body 60 is set to be lower in rigidity than the support wire 20. That is, the opening 14 of the seat back frame 13 of the present embodiment is bridged by the support wire 20 and the planar elastic body 60, and the support wire 20 and the planar elastic body 60 are transferred from the plate-like back pan 47. The rigidity is set to decrease step by step.
(Load transmission member)
FIG. 9 is a sectional view taken along line BB in FIG.
As shown in FIGS. 5, 7, and 9, the side wall 30 on the outer side in the width direction of the side frame portion 13 c is provided with a protruding portion 70 that protrudes toward the outer side in the width direction. The protrusion 70 is formed in a hollow box shape that opens toward the inner side in the width direction. The rear surface 70a of the protrusion 70 is formed longer in the width direction than the front surface 70b. That is, the front end portion of the front surface 70b abuts on the center portion in the front-rear direction of the side wall 30 of the side frame portion 13c, while the front end portion of the rear surface 70a wraps around to the rear wall 31b side of the side frame portion 13c. 13c. Further, an attachment hole 70c for attaching a side airbag device 51 described later is formed on the front surface 70b of the protruding portion 70. Note that a bead 70 d extending along the width direction is formed on the outer peripheral surface of the protruding portion 70, and configured to suppress buckling of the protruding portion 70.
A through hole 71 is formed in the side surface 70e of the projecting portion 70, and the tubular guide pipe 72 is inserted into the through hole 71 and fixed by welding. That is, the guide pipe 72 extends along the width direction. There is a slight gap between the axial end surface of the guide pipe 72 and the side wall 30 of the side frame portion 13c.
As shown in FIGS. 4, 7, and 9, the load transmission block 21 is fixed to the guide pipe 72 in a fitted state. The load transmission block 21 is a member that transmits the impact load input to the side wall of the vehicle body at the time of a side collision of the vehicle to the side frame portion 13c. The load transmission block 21 has a honeycomb structure in which cylindrical cross sections are arranged in parallel by a plurality of ribs 75 extending in the width direction therein, and the whole is formed in a rectangular parallelepiped shape that is long in the vertical direction by resin. . In addition, the load transmission block 21 includes a fitting hole 34 into which a guide pipe 72 protruding from the side frame portion 13 c is fitted. When the fitting hole 34 is fitted to the guide pipe 72, the protruding portion Fastened to 70 with screws or the like.
Furthermore, an accommodating portion (fitting portion) 73 that receives the above-described protruding portion 70 is formed inside the load transmission block 21. Thereby, the load transmission block 21 is attached so that it may cover the protrusion part 70 from the width direction outer side. In this case, the load transmitting block 21 is in a state where the end surface on the inner side in the width direction contacts the side wall 30 of the side frame portion 13c and the end surface on the inner side in the width direction of the rib 75 contacts the side surface 70e of the protruding portion 70. The guide pipe 72 is fitted. Further, the front surface side of the load transmission block 21 is formed with a notch 74 that exposes the front surface 70b including the mounting hole 70c of the protrusion 70 when the load transmission block 21 and the protrusion 70 are fitted.
The load transmission block 21 thus fastened and fixed is projected at a position biased rearward with respect to the longitudinal center of the side wall 30. In this embodiment, the guide pipe 72 and the load transmission block 21 constitute a load transmission member. A closed cross-section structure portion H2 including the inclined channel 28 and the reinforcing plate 32 is disposed on the opposite side of the load transmission member with the side frame portion 13c interposed therebetween.
2 and 9, a side airbag device 51 for protecting the passenger is attached to the side wall 30 of the side frame portion 13c and in front of the load transmission block 21.
As shown in FIG. 9, the side airbag device 51 includes an inflator 52 that detects an impact and generates gas, and a folded bag body 53 that is expanded by receiving the gas pressure of the inflator 52. It is attached to the side frame portion 13c in a state of being accommodated in a bag case 54 having a lid portion that can be opened and closed.
As shown in FIG. 3, the inflator 52 includes a cylindrical main body portion 52a and a gas discharge port 52b, and is attached to the side frame portion 13c so that the main body portion 52a extends along the longitudinal direction of the side frame portion 13c. It has been. The inflator 52 is fastened and fixed to the support plate 77 provided on the upper portion of the side frame portion 13c and the mounting hole 70c of the protruding portion 70 by screws or the like in front of the load transmission block 21.
The bag body 53 is disposed on the outer side in the width direction of the gas discharge port 52b of the inflator 52 and at a position facing the front surface 21a of the load transmission block 21 (the front surface 70b of the protruding portion 70).
Further, the bag body 53 is folded in the form of being wound in a roll shape a plurality of times in the direction of the inflator 52 from the distal end side toward the root portion side. Therefore, when the bag body 53 receives the gas pressure from the inflator 52, the bag body 53 is smoothly deployed toward the outer side in the width direction and the front side of the vehicle body in such a manner that the entrainment is released from the root portion side. At this time, since the bag body 53 faces the front surface 21a of the load transmission block 21 (the front surface 70b of the protruding portion 70), the unfolding direction is regulated in the vehicle front direction by the front surface of the load transmission block 21, It extends to the front side along the side wall of the vehicle body such as the center pillar 11 and door lining (not shown). That is, the load transmission block 21 and the front surfaces 21 a and 70 b of the projecting portion 70 are constituent elements as a support surface of the bag body 53.
In FIG. 9, 55 is a pad material disposed around the seat back frame 13, the load transmission block 21 and the side airbag device 51, and 56 is a skin material covering the outer surface of the pad material 55. is there. In the case of the present embodiment, the pad material 55 is provided with a slit-like opening 57 that opens to the outside in the width direction, and the load transmission block 21 and the side airbag device 51 are disposed in the opening 57. When gas is supplied from the inflator 52 to the bag body 53 at the time of a side collision, the bag body 53 jumps out of the opening 57 and expands forward by breaking the skin material 56 on the side portion of the seat back 3.
Further, as shown in FIG. 9, the side airbag device 51 in which the bag body 53 is folded and attached to the side frame portion 13 c is configured so that the outer end portion (of the load transmission block 21 of the load transmission block 21) of the vehicle seat 1. It is set so as to be located on the inner side of the tip portion. For this reason, a space can be provided in a region on the outer side in the width direction on the front side of the load transmission block 21, and this portion can be used effectively.
Further, as shown in FIG. 4, load transmission blocks 38 and 39 are respectively attached to the outer sides (outside in the width direction) of the reclining mechanism 18 at the lower ends of the side frame portions 13c and 13d on the left and right sides. Each of the load transmission blocks 38 and 39 has a honeycomb structure in which a plurality of cylindrical cross sections extending in the width direction are arranged in parallel, like the load transmission block 21 on the upper side. The load transmission block 39 attached to the side frame portion 13d on the inner side in the width direction faces the side surface of the console box 5 at the center in the width direction.
According to the above configuration, when an impact load is input to the side of the vehicle body at the time of a side collision of the vehicle, the sensor detects the impact and the inflator 52 of the side airbag device 51 generates gas.
The gas generated in the inflator 52 is supplied to the bag body 53, and the bag body 53 breaks the skin material 56 on the sheet side portion and bulges forward from the side portion of the sheet 1. Thereby, the bag body 53 expands between the occupant seated on the seat 1 and the side wall of the vehicle body.
Further, when the side wall of the vehicle body such as the center pillar 11 is deformed in the seat back 3 direction (inward in the width direction) at the time of a side collision of the vehicle, the side wall comes into contact with the load transmission blocks 21 and 38 on the side of the vehicle seat 1. Load is input.
First, when a load is input to the lower load transmission block 38, the load transmission block 39 on the inner side in the width direction comes into contact with the console box 5 as the whole seat 1 moves inward in the width direction. At this time, the load is transmitted to the inner side in the width direction through the closed cross-section structure portion H1 including the lower channel 27 of the load path plate 25 and the lower frame portion 13b of the seat back frame 13. Thereafter, the load transmitted to the closed cross-section structure portion H1 is transmitted to the lower frame portion 13b from the end portion on the inner side in the width direction of the closed cross-section structure portion H1, and the side frame portion on the inner side in the width direction via the lower frame portion 13b. 13d. Then, the load transmitted to the side frame portion 13 d is transmitted to the floor tunnel 12 via the load transmission block 39 and the console box 5. At this time, by forming the closed cross-section structure portion H1, the bending rigidity of the load path structure is improved, the deformation of the seat back frame 13 is suppressed, and the impact load can be effectively transmitted to the console box 5.
When an impact load is input to the upper load transmission block 21, the load is transmitted from the lateral side to the side frame portion 13 c on the outer side in the width direction of the seat back frame 13 from the load transmission block 21.
The load transmitted to the side frame portion 13c is transmitted to the closed cross-section structure portion H2 including the inclined channel 28 and the reinforcing plate 32, and then transmitted obliquely downward toward the inner side in the width direction. Specifically, the load transmitted to the closed cross-section structure portion H2 is transmitted to the closed cross-section structure portion H1 through the entire area of the closed cross-section structure portion H2 and the flat plate portion 29. Then, the load transmitted to the closed cross-section structure portion H1 is transmitted to the lower frame portion 13b from the end portion on the inner side in the width direction of the closed cross-section structure portion H1, and the side frame portion on the inner side in the width direction via the lower frame portion 13b. 13d. Then, the load transmitted to the side frame portion 13 d is transmitted to the floor tunnel 12 via the load transmission block 39 and the console box 5.
As described above, the impact load input to the load transmission block 21 is received in almost the entire area of the load path plate 25, and after being dispersed in the entire area of the load path plate 25, the inner side frame via the lower frame portion 13b. It is transmitted to the part 13d. At this time, by forming the closed cross-section structure portions H1 and H2 between the side frame portions 13c and 13d, the bending rigidity of the load path structure can be improved and the deformation of the seat back frame 13 can be suppressed. Therefore, the impact load can be effectively transmitted to the console box 5.
Here, in the present embodiment, the load transmission block 21 is fitted into the guide pipe 72 and is fixed so as to cover the box-shaped protrusion 70. Therefore, for example, even when an impact load is input to the load transmission block 21 from a diagonally forward or diagonally rearward direction (a direction intersecting the width direction), the load transmission block 21 is not displaced and directed inward in the width direction. The load can be transmitted.
Thus, in this embodiment, by attaching the load transmission block 21 to the box-shaped protruding portion 70 protruding outward in the width direction from the side frame portion 13c, the load transmission block 21 with respect to the side frame portion 13c is attached. Positioning can be performed. Thereby, since the movement of the load transmission block 21 can be suppressed, not only the collision load from the side, but also the collision load is promptly transmitted inward in the vehicle width direction without being affected by the input direction of the collision load such as an oblique direction. it can. As a result, the load transmission efficiency with respect to the seat back frame 13 can be improved.
Furthermore, since the load transmission block 21 is fitted and fixed to the guide pipe 72, positioning with respect to the side frame portion 13c can be performed more easily, and deviation at the time of collision load input can be further suppressed.
Moreover, since the bag body 53 is arrange | positioned in the position which the bag body 53 opposes the front surfaces 21b and 70b of the load transmission block 21 (projection part 70), the front surfaces 21b and 70b are the bag bodies 53 which concern on this embodiment. It is a component as a supporting surface. That is, since the reaction force when the bag body 53 is deployed can be reliably received by the load transmission block 21 (projecting portion 70), the bag body 53 can be deployed more quickly.
FIG. 10 is a rear view of the left side of the front seat compartment. In the drawings, the arrow FR indicates the front of the vehicle, and the arrow OUT indicates the outer side in the width direction of the vehicle.
As shown in FIG. 10, a floor tunnel 112 is formed on the vehicle body floor 109 so as to protrude upward along the vehicle body longitudinal direction at the center in the vehicle width direction. A pair of left and right front seats 101, 101 are arranged on both sides of the floor tunnel 112.
Side sills 110 having a closed cross-sectional structure that are joined to both side edges of the vehicle body floor 109 are provided along the vehicle longitudinal direction on the outer sides of the left and right seats 101, 101. The lower side of the center pillar 111 is connected to the side sill 110. Has been. Here, in FIG. 10, only the skeleton of the sheet 101 is shown for convenience of explanation (the same applies to the following drawings).
On the floor tunnel 112, between the left and right sheets 101, 101, a console box 5 having a storage portion 105a recessed on the upper surface side is fixed.
FIG. 11 is a perspective view of the vehicle seat 101 installed on the front seat side of the vehicle as seen from the diagonally forward side, and FIG. 12 is a perspective view of the frame portion of the vehicle seat 101 similarly viewed from the diagonally forward side. It is. In the following description, the width direction is the same as the vehicle width direction (seat width direction) unless otherwise specified.
As shown in FIG. 11, the vehicle seat 101 includes a seat cushion 102 that supports the occupant's buttocks, a seat back 103 that is connected to the rear end of the seat cushion 102 and supports the occupant's waist and back, A headrest 104 (only a skeleton is shown in FIG. 12) is supported on the upper portion of the seat back 103 and supports the head and neck of the occupant.
As shown in FIG. 12, the seat cushion 102 includes a seat cushion frame 107 to which a rear cross member 106 extending in the width direction is attached to a rear end portion, and the seat cushion frame 107 is seat rails 108, 108. It is attached to the vehicle body floor 109 via the slidable forward and backward.
The seat cushion frame 107 is a member formed in a U-shape, with the left and right rear ends extending slightly obliquely upward, and a cushion spring 117 is stretched inside (see FIG. 12).
FIG. 13 is an exploded perspective view of the skeleton part of the seat back 103.
As shown in FIGS. 12 and 13, the seat back 103 includes a seat back frame 113 having a substantially rectangular frame shape including an upper frame portion 113a, left and right side frame portions 113c and 113d, and a lower frame portion 113b. The lower end of the seat back frame 113 is coupled to the rear end portion of the seat cushion frame 107 so as to be tiltable.
The upper frame portion 113a includes a substantially U-shaped pipe material, and a support pipe 144 that supports the headrest 104 so as to be movable up and down is attached to the center of the upper side portion extending in the width direction. Further, the upper frame member 113a is provided with an upper cross member 115 so as to bridge both ends in the width direction. The upper cross member 115 is curved backward from both sides in the width direction to the central portion, and the base end side of the support pipe 144 described above is fixed.
The left and right side frame portions 113c and 113d include a panel material having a substantially U-shaped horizontal cross section, and the region above the substantially central portion in the vertical direction has a narrow front-rear width and is lower than the substantially central portion. The side region has a relatively wide front-rear width. The narrower upper regions of the side frame portions 113c and 113d are welded and fixed to the corresponding side portions of the upper frame portion 113a so as to wrap from the outside in the width direction at the U-shaped cross section. Further, a hinge portion 116 connected to the rear end portion of the seat cushion frame 107 and a reclining mechanism 118 for adjusting the tilt angle of the seat back frame 113 are attached to the lower end sides of the side frame portions 113c and 113d. It has been. The left and right reclining mechanisms 118 are coupled to each other by an operating rod 145 extending in the width direction.
The lower frame portion 113b includes a panel material having a substantially S-shaped cross section in the vertical direction (see FIG. 17), and extends along the width direction so as to surround the operating rod 145 from the rear in the upper half portion thereof. Both end portions are connected to the lower ends of the left and right side frame portions 113c and 113d.
The left and right side frame portions 113c and 113d are formed by connecting a front wall 131a and a rear wall 131b that are bent inward in the width direction on the front and rear sides of the side wall 130 on the outer side in the width direction. Thus, the width on the upper side is narrower than the substantially central portion, and the width on the lower side is widened. Specifically, the side wall 130 is formed substantially straight on the rear end side in the entire upper and lower sides, but the front end side is formed almost straight from the upper part to the central area in the vertical direction, and gradually decreases downward from the central area. Curved to bulge forward. Therefore, the front wall 131a of the side frame portions 113c and 113d is provided with a curved surface that follows the curved shape on the front end side of the side wall 130.
FIG. 14 is an enlarged perspective view of the skeleton part of the seat back 103.
As shown in FIGS. 12 to 14, a back pan 147 made of, for example, a resin and a three-dimensionally curved plate material is disposed between the side frame portions 113c and 113d. Specifically, the back pan 147 includes a pelvis support 122 having a U-shaped horizontal cross section, and extends from both sides of the pelvis support 122, and is located on the side of the front wall 131a of the side frame portions 113c and 113d. To the outer surface of the side wall 130.
The pelvis support 122 extends on the rear side in the front-rear direction of the side frame portions 113c and 113d so as to bridge between the side frame portions 113c and 113d, and both sides of the side frame 130 are side walls 130 of the side frame portions 113c and 113d. It extends toward the front along the inner surface. In other words, the pelvis support 122 supports the pelvis of the occupant from the rear to the lower periphery of the lumbar vertebra when seated on the occupant's seat 101, and the lower edge is the lower frame portion at the center in the width direction. It is fastened and fixed to 113b with screws or the like.
The front end portion 124 is fastened and fixed by screws or the like on the outer surface side of the side frame portions 113c and 113d.
FIG. 15 is an enlarged perspective view of the skeleton of the seat back 103 with the back pan 147 removed, and FIG. 16 is a perspective view of the seat back 103 viewed from the rear side. FIG. 17 is a cross-sectional view taken along line AA in FIG.
As shown in FIGS. 15 and 16, a load path plate (support plate) 125 is provided between the back pan 147 and the lower frame portion 113b in the front-rear direction so as to overlap the back pan 147 in the front-rear direction. . The load path plate 125 is made of, for example, metal and has a substantially triangular shape when viewed from the front-rear direction. Specifically, the load path plate 125 is provided with a channel portion 126 that has a U-shaped vertical cross section and extends in a substantially Y shape when viewed from the front-rear direction. Specifically, the channel part 126 has a U-shaped lower channel 127 formed so as to bridge between the side frame parts 113c and 113d, and a cross section branched from a midway part in the extending direction of the lower channel 127. And a U-shaped inclined channel (inclined reinforcing portion) 128.
As shown in FIGS. 13, 15, and 16, the lower channel 127 is disposed so that the opening portion of the U-shaped cross section faces rearward and is engaged with the upper half of the lower frame portion 113b. The entire region of the lower edge portion and the upper edge portion is welded and fixed to the lower frame portion 113b. Specifically, the lower channel 127 has an upper edge portion fixed to the upper edge portion of the lower frame portion 113b, and a lower edge portion fixed to the front surface of the lower frame portion 113b. As a result, the lower channel 127 and the lower frame portion 113b form a closed cross-section structure portion H101 having a rectangular cross-sectional view extending along the width direction between the side frame portions 113c and 113d, and the side frame portion 113c. , 113d contributes to load transmission.
Further, the lower channel 127 has an outer end in the width direction welded and fixed to the inner surface of the side wall 130 of the side frame portion 113c, while an inner end of the width direction is in contact with the inner surface of the side wall 130 of the side frame portion 113d. There is a slight gap between them. Specifically, the end portion on the inner side in the width direction of the lower channel 127 extends to the inner side of the center portion in the width direction of the lower frame portion 113b, and overlaps the rear wall 131b of the side frame portion 113d when viewed from the front-rear direction. To the position. That is, the lower channel 127 and the lower frame portion 113b are connected over substantially the entire width direction of the lower frame portion 113b. Therefore, also in the above-described closed cross-section structure portion H101, the end portion on the outer side in the width direction is in contact with the inner surface of the side wall 130 of the side frame portion 113c, while the end portion on the inner side in the width direction is on the side wall 130 of the side frame portion 113d. There is a slight gap between the inner surface. The lower channel 127 and the lower frame portion 113b are connected in a range from the outer end in the width direction of the lower frame portion 113b to the inner side of the central portion in the width direction. The lower channel 127 and the lower frame portion 113b overlap with the lower frame portion 113b in the front-rear direction in substantially the entire region in the width direction of the lower end of the lower channel 127.
The inclined channel 128 is formed continuously from the lower channel 127 and extends obliquely upward as it goes outward in the width direction from the branch position K with the lower channel 127. A mounting piece 128b (see FIG. 15) bent outward is formed at the outer end in the width direction of the inclined channel 128, and this mounting piece 128b is fixed to the inner surface of the side wall 130 of the side frame portion 113c. ing.
In this case, the end surface on the outer side in the width direction of the inclined channel 128 is disposed opposite to a load transmission block 121 described later with the side frame portion 113c interposed therebetween. The inclined channel 128 is formed wider as it goes outward in the width direction, and a bead 128 a that bulges outward is formed on the peripheral surface of the inclined channel 128.
Further, between the lower channel 127 and the inclined channel 128, the flat plate portion 129 bridges the respective channels 127, 128 so as to bridge an area surrounded by the upper edge portion of the lower channel 127 and the lower edge portion of the inclined channel 128. Are integrally formed. Accordingly, the inclined channel 128 and the lower frame portion 113b are connected to each other in the extending direction of the inclined channel 128 via the lower channel 127 and the flat plate portion 129.
Further, a reinforcing plate 132 is provided on the rear surface side of the load path plate 125 so as to cover the opening portion of the inclined channel 128. The reinforcing plate 132 is a plate material formed in an L shape in a cross-sectional view in the vertical direction, and is formed so that the upper side wraps around the upper edge of the inclined channel 128. Specifically, the reinforcing plate 132 follows a base portion 132a (see FIG. 16) whose base end is welded and fixed to the rear surface of the lower frame portion 113b, and the inclined channel 128 as it goes outward from the base portion 132a in the width direction. And an inclined portion 132b that is inclined. The inclined portion 132b is welded and fixed at the upper edge over the entire upper edge of the inclined channel 128, and the lower edge is welded and fixed to the rear surface of the flat plate portion 129. As a result, the reinforcing plate 132 and the inclined channel 128 form a closed cross-section structure portion H102 (see FIG. 17) having a rectangular shape in cross-section and extending obliquely upward from the branch position K toward the outer side in the width direction. It contributes to load transmission between the frame parts 113c and 113d.
That is, in this embodiment, between the side frame portions 113c and 113d, a closed cross-section structure portion H101 extending along the width direction and a branch from the closed cross-section structure portion H101, and upward as it goes outward in the width direction. It has a closed cross-section structure portion H102 that is inclined, and has two closed cross-section structure portions H101, H102 in the vertical direction outside the sheet 101 in the width direction. The load path plate 125, the lower frame portion 113b, and the reinforcing plate 132 constitute a load path structure.
Here, as shown in FIGS. 12 and 14, the opening 114 opened in the front-rear direction between the back pan 147 and the upper cross member 115 has a space between the back pan 147 and the upper cross member 115. A support wire 120 and a planar elastic body 160 are provided so as to be bridged.
First, the support body wire 120 is, for example, a metal wire bent in a crank shape, and elastically connects between the hook 119 formed on the pelvis support body 122 of the back pan 147 and the side frame portions 113c and 113d. It is provided so that it may span. Specifically, the support wire 120 includes a locking portion 135 (see FIG. 13) locked to the hook 119 of the back pan 147, and an extending portion extending along the width direction from both ends of the locking portion 135. 136 and a folded portion 137 (see FIG. 14) formed at the tip of the extending portion 136 and connected to the side frame portions 113c and 113d, respectively.
The above-described hook 119 of the back pan 147 is a tongue-like member that is formed so that the upper part of the pelvic support 122 is cut and raised and extends downward.
The locking portion 135 is bent and formed in a substantially U shape that opens upward. The bottom portion of the locking portion 135 is locked to the hook 119 of the back pan 147, and both ends of the bottom portion are bent upward. Has been.
The extending portion 136 has a proximal end extending from both ends of the locking portion 135 toward the side frame portions 113c and 113d, and a distal end side thereof being bent forward, and the side walls of the side frame portions 113c and 113d. It extends along the inner surface of 130.
The folded portion 137 is formed such that the distal end side of the extending portion 136 is folded back, wraps around the front wall 131a of the side frame portions 113c and 113d, and enters the through hole 141 formed in the front wall 131a. Has been inserted. Thereby, both ends of the support body wire 120 are connected to the support frame portions 113c and 113d.
A planar elastic body 160 that elastically bridges the support wire 120 and the upper cross member 115 is provided between the support body wire 120 in the opening 114 and the upper cross member 115 described above. The planar elastic body 160 includes a wire made of metal or the like stretched in a lattice shape between the upper cross member 115 and the support body wire 120, and a pair of bridges that bridge the upper cross member 115 and the support body wire 120. A bolster wire 161, a plurality of stringer wires 162 that bridge the bolster wires 161, and a connecting wire 163 that connects the stringer wires 162 together are provided.
The bolster wires 161 extend in parallel to each other along the vertical direction on both sides in the width direction of the sheet 101. The bolster wire 161 is inserted into and fixed to a pair of attachment pieces 164 formed at the upper cross member 115 at the upper end portion, and the lower end portion together with the extending portions 136 of the support wire 120 by the binding tool 165. It is bundled. At this time, the bolster wire 161 and the support wire 120 are bundled so as to be rotatable around the respective axes of the wires 120 and 161 in the binding device 165.
Each stringer wire 162 extends along the width direction, and both ends thereof are wound and fixed to the bolster wires 161, respectively. The stringer wires 162 are arranged in parallel along the vertical direction, and the pitch between the stringer wires 162 is set narrower in the lower part than in the upper part. Therefore, the planar elastic body 160 is set to increase in rigidity stepwise from the upper part to the lower part.
The connecting wire 163 extends in parallel with the bolster wire 161 and is arranged so as to connect the central portions in the extending direction of the stringer wires 162.
The wire diameters of the wires 161 to 163 are formed smaller than the wire diameter of the support wire 120 described above. Therefore, the planar elastic body 160 is set to be lower in rigidity than the support body wire 120. That is, the opening 114 of the seat back frame 113 of this embodiment is bridged by the support wire 120 and the planar elastic body 160, and the support wire 120 and the planar elastic body 160 are transferred from the plate-shaped back pan 147. The rigidity is set to decrease step by step.
18 is a cross-sectional view taken along line BB in FIG.
As shown in FIGS. 14, 16, and 18, the side frame 130 on the outer side in the width direction of the side frame portion 113 c is provided with a protruding portion 170 that protrudes outward in the width direction. The protrusion 170 is formed in a hollow box shape that opens toward the inside in the width direction, and the rear surface 170a is formed longer in the width direction than the front surface 170b. That is, the front end portion of the front surface 170b abuts on the center portion in the front-rear direction of the side wall 130 of the side frame portion 113c, while the front end portion of the rear surface 170a wraps around to the rear wall 131b side of the side frame portion 113c. 113c. Further, an attachment hole 170c for attaching a side airbag device 151 to be described later is formed on the front surface 170b of the protrusion 170. Note that a bead 170 d extending along the width direction is formed on the outer peripheral surface of the protrusion 170, and configured to suppress buckling of the protrusion 170.
A through hole 171 is formed in the side surface 170e of the projecting portion 170, and is fixed by welding with a cylindrical guide pipe 172 inserted into the through hole 171. That is, the guide pipe 172 extends along the width direction. There is a slight gap between the axial end surface of the guide pipe 172 and the side wall 130 of the side frame portion 113c.
As shown in FIGS. 13, 16, and 18, a load transmission block 121 is fixed to the guide pipe 172 in a fitted state. The load transmission block 121 is a member that transmits the impact load input to the side wall of the vehicle body at the time of a side collision of the vehicle to the side frame portion 113c. The load transmission block 121 has a honeycomb structure in which cylindrical cross sections are arranged in parallel by a plurality of ribs 175 extending in the width direction therein, and the whole is formed in a rectangular parallelepiped shape that is long in the vertical direction by resin. . In addition, the load transmission block 121 includes a fitting hole 134 into which a guide pipe 172 protruding from the side frame portion 113c is fitted. When the fitting hole 134 is fitted to the guide pipe 172, the protruding portion It is fastened and fixed to 170 by screws or the like.
Furthermore, an accommodating portion 173 that receives the above-described protrusion 170 is formed inside the load transmission block 121. Thereby, the load transmission block 121 is attached so that it may cover the protrusion part 170 from the width direction outer side. In this case, the load transmission block 121 is in a state where the end surface on the inner side in the width direction contacts the side wall 130 of the side frame portion 113c and the end surface on the inner side in the width direction of the rib 175 contacts the side surface 170e of the protruding portion 170. The guide pipe 172 is fitted. Further, the front surface side of the load transmission block 121 is formed with a notch 174 that exposes the front surface 170b including the mounting hole 170c of the protrusion 170 when the load transmission block 121 and the protrusion 170 are fitted.
The load transmission block 121 fastened and fixed in this manner is projected at a position biased rearward with respect to the front-rear center of the side wall 130. In this embodiment, the guide pipe 172 and the load transmission block 121 constitute a load transmission member. In addition, the closed cross-section structure part H102 which consists of the above-mentioned inclination channel 128 and the reinforcement plate 132 is arrange | positioned on the opposite side of a load transmission member on both sides of the side part frame part 113c.
11 and 18, a side airbag device 151 for protecting the occupant is attached to the side wall 130 of the side frame portion 113c and in front of the load transmission block 121.
As shown in FIG. 18, the side airbag device 151 includes an inflator 152 that generates a gas upon sensing an impact, and a folded bag body 153 that is expanded by receiving the gas pressure of the inflator 152. It is attached to the side frame portion 113c in a state of being accommodated in a bag case 154 having an openable / closable lid portion.
As shown in FIG. 12, the inflator 152 includes a cylindrical main body 152a and a gas discharge port 152b, and is attached to the side frame 113c so that the main body 152a is along the longitudinal direction of the side frame 113c. It has been. The inflator 152 is fastened and fixed to the support plate 177 provided on the upper portion of the side frame portion 113c and the mounting hole 170c of the protruding portion 170 by screws or the like in front of the load transmission block 121.
The bag body 153 is disposed on the outer side in the width direction of the gas discharge port 152b of the inflator 152 and at a position facing the front surface 121a of the load transmission block 121 (the front surface 170b of the protruding portion 170).
Moreover, the bag body 153 is folded in the form of being wound in a roll shape a plurality of times in the direction of the inflator 152 from the distal end side toward the root portion side. Therefore, when the bag body 153 receives the gas pressure from the inflator 152, the bag body 153 is smoothly deployed toward the outer side in the width direction and the front side of the vehicle body in such a manner that the entrainment is released from the root side. At this time, since the bag body 153 is opposed to the front surface 121a of the load transmission block 121 (the front surface 170b of the protruding portion 170), the unfolding direction is restricted to the vehicle front direction by the front surface of the load transmission block 121. It expands forward along the side wall of the vehicle body such as the center pillar 111 and door lining (not shown). That is, the load transmission block 121 and the front surfaces 121 a and 170 b of the projecting portion 170 are constituent elements as a support surface of the bag body 153.
In FIG. 18, reference numeral 155 denotes a pad material arranged around the seat back frame 113, the load transmission block 121, and the side airbag device 151. Reference numeral 156 denotes a skin material that covers the outer surface of the pad material 155. is there. In the case of the present embodiment, the pad material 155 is provided with a slit-shaped opening 157 that opens to the outside in the width direction, and the load transmission block 121 and the side airbag device 151 are disposed in the opening 157. When gas is supplied from the inflator 152 to the bag body 153 at the time of a side collision, the bag body 153 jumps out from the opening 157 and expands forward by breaking the skin material 156 on the side portion of the seat back 103.
Further, as shown in FIG. 18, the side airbag device 151, in which the bag body 153 is folded and attached to the side frame portion 113 c, has an outer end portion (of the load transmission block 121 of the load transmission block 121). It is set so as to be located on the inner side of the tip portion. For this reason, a space can be provided in a region on the outer side in the width direction on the front side of the load transmission block 121, and this portion can be used effectively.
Further, as shown in FIG. 13, load transmission blocks 138 and 139 are respectively attached to the outer sides (outside in the width direction) of the reclining mechanism 118 at the lower ends of the side frame portions 113c and 113d on both the left and right sides. Each of the load transmission blocks 138 and 139 has a honeycomb structure in which a plurality of cylindrical cross sections extending in the width direction are arranged in parallel, like the load transmission block 121 on the upper side. The load transmission block 139 attached to the side frame portion 113d on the inner side in the width direction faces the side surface of the console box 105 at the center in the width direction.
According to the above configuration, when an impact load is input to the side of the vehicle body at the time of a side collision of the vehicle, the sensor detects the impact and the inflator 152 of the side airbag device 151 generates gas.
The gas generated in the inflator 152 is supplied to the bag body 153, and the bag body 153 breaks the skin material 156 on the side of the sheet 101 and bulges forward from the side of the sheet 101. As a result, the bag body 153 expands between the occupant seated on the seat 101 and the side wall of the vehicle body.
At this time, in the vehicle seat 101 of the present embodiment, since the bag body 153 is disposed at a position facing the front surfaces 121b and 170b of the load transmission block 121 (projection 170), the front surfaces 121b and 170b are the bag body 153. It is a component as a supporting surface. That is, since the reaction force when the bag body 153 is deployed can be reliably received by the load transmission block 121 (projecting portion 170), the bag body 153 can be deployed more quickly.
Further, when the side wall of the center pillar 111 or the like is deformed in the direction of the seat back 103 (inward in the width direction) at the time of a side collision of the vehicle, the side wall comes into contact with the load transmission blocks 121 and 138 on the side portion of the vehicle seat 101. Load is input.
First, when a load is input to the lower load transmission block 138, the load transmission block 139 on the inner side in the width direction comes into contact with the console box 105 as the entire seat 101 moves in the width direction. At this time, the load is transmitted to the inner side in the width direction through the closed cross-section structure portion H101 including the lower channel 127 of the load path plate 125 and the lower frame portion 113b of the seat back frame 113. Thereafter, the load transmitted to the closed cross-section structure portion H101 is transmitted to the lower frame portion 113b from the end portion on the inner side in the width direction of the closed cross-section structure portion H101, and the side frame portion on the inner side in the width direction via the lower frame portion 113b. 113d. Then, the load transmitted to the side frame portion 113 d is transmitted to the floor tunnel 112 via the load transmission block 139 and the console box 105. At this time, by forming the closed cross-section structure portion H101, the bending rigidity of the load path structure is improved, the deformation of the seat back frame 113 is suppressed, and the impact load can be effectively transmitted to the console box 105.
Further, when an impact load is input to the upper load transmission block 121, the load is transmitted from the lateral side to the side frame portion 113c on the outer side in the width direction of the seat back frame 113 from the load transmission block 121.
The load transmitted to the side frame portion 113c is transmitted to the closed cross-section structure portion H102 including the inclined channel 128 and the reinforcing plate 132, and then transmitted obliquely downward toward the inner side in the width direction. Specifically, the load transmitted to the closed cross-section structure portion H102 is transmitted to the closed cross-section structure portion H101 through the entire area of the closed cross-section structure portion H102 and the flat plate portion 129. Then, the load transmitted to the closed cross-section structure portion H101 is transmitted to the lower frame portion 113b from the end portion on the inner side in the width direction of the closed cross-section structure portion H101, and the side frame portion on the inner side in the width direction via the lower frame portion 113b. 113d. Then, the load transmitted to the side frame portion 113 d is transmitted to the floor tunnel 112 via the load transmission block 139 and the console box 105.
As described above, the impact load input to the load transmission block 121 is received in almost the entire area of the load path plate 125 and dispersed in the entire area of the load path plate 125, and then the inner side frame is interposed via the lower frame portion 113b. It is transmitted to the part 113d. At this time, by forming the closed cross-section structures H101 and H102 between the side frames 113c and 113d, the bending rigidity of the load path structure can be improved and the deformation of the seat back frame 113 can be suppressed.
Therefore, the impact load can be effectively transmitted to the console box 105.
Here, in this embodiment, the load transmission block 121 is fitted into the guide pipe 172 and is fixed so as to cover the box-shaped protrusion 170. Therefore, for example, even when an impact load is input to the load transmission block 121 from diagonally forward or diagonally rearward (direction intersecting the width direction) of the vehicle body, the load transmission block 121 is not displaced and directed inward in the width direction. The load can be transmitted.
In the present embodiment, by connecting the load path plate 125 (lower channel 127) and the lower frame portion 113b in substantially the entire width direction, the impact load input to the load path plate 125 via the load transmitting member is reduced. After being received in almost the entire area of the path structure and dispersed throughout the entire area of the load path structure, it is transmitted to the inner side frame part 113d via the lower frame part 113b.
Thereby, the collision load can be promptly transmitted to the inner side in the vehicle width direction, and the load transmission efficiency to the seat back frame 113 can be improved. In this case, since the load transmission efficiency can be improved, it is not necessary to increase the thickness of the load path structure (load path plate 125, etc.) in order to ensure bending rigidity. Therefore, it is possible to provide a load path structure having a simple configuration that is relatively thin and light in weight.
Further, by providing the reinforcing plate 132 on the rear surface side of the inclined channel 128 so as to cover the opening portion of the inclined channel 128, the bending rigidity of the inclined channel 128 can be improved and the deformation of the seat back frame 113 can be suppressed.
Furthermore, according to the present embodiment, the above-described closed cross-section structure portion H102 is disposed on the opposite side of the load transmission member with the side frame portion 113c interposed therebetween, whereby the side frame portion is interposed via the load transmission member. The collision load input to 113c can be efficiently transmitted to the load path structure. Thereby, the load transmission efficiency with respect to the seat back frame 113 can further be improved.
In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.
For example, in the first embodiment described above, the configuration in which the upper load transmission block 21 is assembled to the box-shaped protrusion 70 has been described. However, the lower load transmission block 38 is configured to be assembled to the box-shaped projection. It doesn't matter.
Further, for example, in the second embodiment described above, the configuration in which the upper load transmission block 121 is assembled to the box-shaped protruding portion 170 has been described, but the configuration in which the lower load transmission block 138 is assembled to the box-shaped protruding portion. It doesn't matter.
Further, the connection range between the load path plate 125 (lower channel 127) and the lower frame portion 113b is appropriately designed as long as it overlaps with the lower frame portion 113b in the front-rear direction in substantially the entire width direction at the lower end of the lower channel 127. It can be changed. It suffices if it is inside the widthwise central portion of the lower frame portion 113b. In this case, both ends of the lower channel 127 may be fixed so as to be bridged between the side frame portions 113c and 113d.
According to one aspect of the present invention, the outer load transmission block can be fixed in a state where the box-shaped protrusion is received by the fitting portion of the outer load transmission block. Thus, for example, even when an impact load is input to the outer load transmission block from the diagonally forward or diagonally rear (direction intersecting the vehicle width direction), the displacement of the outer load transmission block or the deformation of the protrusion Etc. can be suppressed. Therefore, the collision load can be promptly transmitted to the inner side in the vehicle width direction without being affected by the input direction of the collision load such as an oblique direction as well as the collision load from the side.
DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 13 ... Seat back frame 13c, 13d ... Side part frame part 21 ... Load transmission block (outside load transmission block)
30 ... side wall
51 ... Side airbag device 70 ... Projection part 73 ... Accommodating part (fitting part)
113 ... Seat back frame 113b ... Lower frame (lower reinforcement plate)
113c, 113d ... side frame 125 ... load path plate 128 ... inclined channel (inclined reinforcement)
132: Reinforcing plate H101: Closed cross-section structure part (lower reinforcing part)
A seat back frame comprising a pair of side frame portions disposed on both the left and right sides in the seat width direction;
An outer load transmission block disposed outside the side frame portion of the seat back frame in the width direction of the seat back frame and configured to transmit an impact load input from a side of a vehicle body to the seat back frame;
A projecting portion projecting outward in the width direction of the seat back frame from a side surface of the side frame portion on the outer side in the width direction of the seat back frame;
A side airbag device disposed in front of the protrusion;
A fitting portion formed on the outer load transmission block and receiving the protruding portion;
The vehicle seat according to claim 1, wherein the protrusion has a box shape having a support surface on a surface facing the side airbag device.
The vehicle seat according to claim 1, further comprising a lower reinforcing plate that connects lower portions of the pair of side frame portions.
A support plate having an inclined reinforcing portion disposed on an upper portion of the lower reinforcing plate and inclined inward and downward in the seat width direction from the outer side frame portion of the pair of side frame portions; The vehicle seat according to claim 2, wherein
An end in the width direction of the inclined reinforcing portion of the support plate is connected to the outer side frame portion, and a lower edge of the support plate extends over substantially the entire region of the lower reinforcing plate in the sheet width direction. The vehicle seat according to claim 3, wherein the vehicle seat is connected.
The vehicle seat according to claim 4, wherein the inclined reinforcing portion of the support plate includes a reinforcing plate.
The vehicle seat according to claim 5, wherein the inclined reinforcing portion and the reinforcing plate form a closed cross-sectional shape.
Further comprising a lower reinforcing portion extending in the seat width direction,
The vehicle seat according to claim 4, wherein the support plate and the lower reinforcing plate form a closed cross-sectional shape.
The inclined reinforcing portion of the support plate includes a reinforcing plate;
The support plate has the inclined reinforcing portion formed in a closed cross-sectional shape by the support plate and the reinforcing plate, and the lower reinforcing portion formed in a closed cross-sectional shape by the support plate and the lower reinforcing plate and extending in the sheet width direction. The vehicle seat according to claim 4, further comprising:
PCT/JP2011/062825 2010-06-04 2011-06-03 Vehicle seat WO2011152530A1 (en)
JP2010129222A JP5202580B2 (en) 2010-06-04 2010-06-04 Vehicle seat
JP2010-129222 2010-06-04
JP2010-129223 2010-06-04
JP2010129223A JP5277205B2 (en) 2010-06-04 2010-06-04 Seat back frame structure
EP11789931.0A EP2578446B1 (en) 2010-06-04 2011-06-03 Vehicle seat
US13/701,136 US8668225B2 (en) 2010-06-04 2011-06-03 Vehicle seat
CN201180026895.0A CN103025571B (en) 2010-06-04 2011-06-03 Vehicle seat
WO2011152530A1 true WO2011152530A1 (en) 2011-12-08
ID=45066885
PCT/JP2011/062825 WO2011152530A1 (en) 2010-06-04 2011-06-03 Vehicle seat
US (1) US8668225B2 (en)
EP (1) EP2578446B1 (en)
CN (1) CN103025571B (en)
WO (1) WO2011152530A1 (en)
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2011-06-03 WO PCT/JP2011/062825 patent/WO2011152530A1/en active Application Filing
2011-06-03 US US13/701,136 patent/US8668225B2/en active Active
2011-06-03 CN CN201180026895.0A patent/CN103025571B/en active IP Right Grant
2011-06-03 EP EP11789931.0A patent/EP2578446B1/en not_active Expired - Fee Related
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