WO2018163539A1 - Vehicle seat - Google Patents
Vehicle seat Download PDFInfo
- Publication number
- WO2018163539A1 WO2018163539A1 PCT/JP2017/043008 JP2017043008W WO2018163539A1 WO 2018163539 A1 WO2018163539 A1 WO 2018163539A1 JP 2017043008 W JP2017043008 W JP 2017043008W WO 2018163539 A1 WO2018163539 A1 WO 2018163539A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- upper frame
- vehicle seat
- headrest
- cover
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
Definitions
- the present invention relates to a vehicle seat mounted on an automobile or the like, and more particularly to a vehicle seat provided with a mechanism for reducing a load applied to an occupant when an impact load is applied.
- a vehicle seat there is a vehicle seat in which a weak portion is provided in a frame of a headrest that contacts the head in order to reduce a load applied to the head of the occupant at the time of a rear collision (for example, Patent Document 1).
- the frame of the headrest is formed by a pipe, and includes a fragile portion that is deformed so as to have a flat cross section inside the headrest.
- the headrest supports the passenger's head from the rear side, and the fragile portion is plastically deformed, so that the load applied to the passenger's head is reduced.
- Patent Document 1 the vehicle seat of Patent Document 1 is deformed so that the frame of the headrest bends backward due to the load at the time of rear collision. Therefore, there is a possibility that the head moves backward with respect to the occupant's torso and a load is applied to the neck.
- an object of the present invention is to provide a vehicle seat that can reduce the load applied to the neck of an occupant.
- a seat back frame including a pair of left and right side frames (1L, 1R) extending in the vertical direction and an upper frame (3) connecting the upper portions of both side frames;
- the load applied to the occupant can be reduced when the fragile portion is deformed. Further, since the upper frame is coupled to the seat back frame, the load from the occupant is easily transmitted to the fragile portion.
- the headrest frame is connected to the upper frame between the left end portion (4L) located on the leftmost side and the right end portion (4R) located on the rightmost side of the weakened portion. It is good to be.
- the headrest frame is connected via at least two or more connecting portions provided in the upper frame, and the leftmost connecting portion (51L) located on the leftmost side of the connecting portions and the left end It is good that a part is connected by the said weak part, and the right side connection part (51R) located in the rightmost side among the said connection parts, and the said right end part are connected by the said weak part.
- This configuration makes it easier for the headrest frame to move according to the load, so that the fragile portion is more easily deformed and the load applied to the occupant's neck is reduced.
- the left connection portion and the right connection portion of the upper frame may be connected by the weak portion.
- the weakened portion located behind the occupant's neck is easily deformed, so that the load applied to the occupant's neck is further reduced.
- the upper frame may be formed of a pipe-shaped member, and the weakened portion may be semicircular when viewed in cross section.
- the vulnerable part can be easily configured.
- the front wall of the fragile portion is formed in a semicircular arc shape in a cross-sectional view
- the rear wall is formed in a plate shape in a cross-sectional view
- the headrest frame is coupled to the front surface of the fragile portion. Good.
- the upper frame may be formed of a pipe-like member, and the weakened portion may be flattened in a sectional view.
- the fragile portion can be easily configured by deformation of the upper frame. Further, the rigidity of the upper frame between the coupling portions can be made lower than that of a semicircle.
- the upper frame may be formed of a pipe-like member, and an opening that penetrates toward the inside may be formed on a side surface of the fragile portion.
- the fragile portion for reducing the load applied to the occupant's neck can be easily configured by providing the opening in the upper frame.
- the opening extends in the vertical direction at a substantially central position in the horizontal direction of the upper frame.
- the headrest frame may be coupled to the front surface of the upper frame.
- This structure makes it difficult for the upper frame to come off the headrest frame when a load is applied to the vehicle seat from the front.
- the perspective view of the vehicle seat which concerns on this invention 1 is an assembled perspective view of the vehicle seat of FIG.
- FIG. 2 is a front view of the seat back and a rear view of the vehicle seat when the back cover is removed.
- the perspective view when the back upper frame and headrest frame of the vehicle seat which concern on this invention are seen from diagonally forward
- the perspective view when the back upper frame and headrest frame of the vehicle seat which concern on this invention are seen from diagonally back
- VI-VI sectional view of FIG. VII-VII sectional view of FIG. Enlarged view of the connecting members on the left and right sides of FIG.
- the left and right sides and the inside and outside are determined based on the occupant seated on the vehicle seat.
- a common number is attached
- the vehicle seat S is a so-called full bucket seat having a seat cushion S1 and a seat back S2 in which a backrest S3 and a headrest portion S4 are integrally formed.
- the seat cushion S1 includes a seat cushion frame, a pad and an outer skin that are placed on the upper side of the seat cushion frame, and supports the occupant's buttocks and thighs.
- the seat cushion frame is formed in a frame shape by a pair of left and right cushion side frames F2 extending in the front-rear direction and a plurality of frames that connect the side surfaces inside the cushion side frames F2.
- the seat back S2 is formed with a pair of left and right vents S5 penetrating back and forth at a position corresponding substantially to the shoulder of the occupant.
- the seat back S2 includes a seat back frame F3, a front cover C1 that covers the front side of the seat back frame F3, and a back cover C2 that is provided behind the seat back frame F3.
- the seat back frame F3 includes a pair of opposing left back side frame 1L and right back side frame 1R, and a back upper frame 3 connecting both the back side frames 1L and 1R, and A back lower frame 5 and a headrest frame 7 coupled to the back upper frame 3 are provided.
- Each backside frame 1L, 1R is formed of a metal plate material in a U shape facing inward in a horizontal sectional view and extends substantially vertically.
- the back side frames 1L and 1R are rotatably coupled to the rear end portions of the cushion side frames F2 via the reclining mechanism R at the lower end portions.
- the reclining mechanism R selectively holds the tilt angle of each of the back side frames 1L, 1R with respect to the cushion side frame F2 at an arbitrary angle.
- the left back side frame 1L and the right back side frame 1R are spaced apart in the left-right direction and form the width of the seat back S2.
- a plate-like erection member 8 is provided between the left and right backside frames 1L, 1R.
- the erection member 8 is supported by the left and right back side frames 1L and 1R through a predetermined elastic member 9 so as to be displaceable back and forth, and supports the back of the occupant with elastic force.
- the erection member 8 is formed using a plate-like member, but is not limited to the plate-like member, and is a known configuration formed by a configuration that provides a lumbar support function (for example, a spring). It's okay.
- a connecting member 10 that connects the back side frames 1L, 1R and the back cover C2 is coupled to the rear walls of the lower end portions of the left and right back side frames 1L, 1R.
- the back upper frame 3 is formed by one continuous pipe member bent in an inverted U shape facing downward when viewed from the back, and connects the upper ends of both the back side frames 1L and 1R. ing.
- the back upper frame 3 has a shoulder portion 3A extending in the left-right direction and arm portions 3B extending downward from both ends of the shoulder portion, and inner surfaces of the corresponding back side frames 1L and 1R at the lower ends of the arm portions 3B. A part of the upper part overlaps and is joined by welding or the like.
- the shoulder portion 3 ⁇ / b> A is provided with a fragile portion 4 that is deformed so as to form a semicircle having a wall surface facing rearward in a side view.
- the fragile portion 4 is formed over a predetermined range approximately at the center in the left-right direction of the shoulder portion 3A, as indicated by the oblique lines in FIG.
- the back upper frame 3 is deformed so as to have a semicircular arc-shaped wall surface facing forward and a planar wall surface facing rearward between the left end portion 4L and the right end portion 4R of the fragile portion 4. Yes.
- sub-frames 6 are provided on the left and right ends of the upper portion of the back upper frame 3 to form portions that contact the shoulder of the occupant of the seat back S2.
- Wire-like sub-side frames 30LU and 30RU for connecting the back upper frame 3 and the left and right back side frames 1L and 1R are provided inside the left and right back side frames 1L and 1R and outside the installation member 8 in the left and right direction. It has been.
- Frame-side locking portions 32 that are paired on the left and right are provided at predetermined positions of the sub-side frames 30LU and 30RU.
- the frame side locking portion 32 is formed as a wire extending in the vertical direction.
- sub-side frames 30LD and 30RD which are formed in the shape of a wire having an annular shape and whose both ends are coupled to the left back-side frames 1L and 1R.
- the frame side latching portions 32 are formed in the sub-side frames 30LD and 30RD. All the frame side locking portions 32 are arranged at a predetermined height above the connecting member 10.
- the headrest frame 7 includes a first headrest frame 50, a second headrest frame 52 and a third headrest frame 54 coupled to the upper front side of the first headrest frame 50.
- the first headrest frame 50 has a pair of left and right first side frame portions 51L and 51R extending vertically and a first upper frame portion 51U connecting the upper ends of the first side frame portions and extending left and right. It is formed by a pipe member bent in a substantially inverted U shape facing downward when viewed from the front.
- the lower left ends and the lower right ends of the first side frame portions 51L and 51R are both disposed between the left end portion 4L and the right end portion 4R, and are bent in a substantially arc shape along the front side wall surface of the back upper frame 3.
- the left and right first side frame portions 51L and 51R are welded to the left connection portion 56L and the right connection portion 56R on the front surface of the back upper frame 3, respectively.
- the left connection portion 56L is disposed on the right side of the left end portion 4L
- the right connection portion 56R is disposed on the left side of the right end portion 4R.
- the first headrest frame 50 forms a part of the shape of the headrest portion S4 and also functions as a headrest pillar.
- the second headrest frame 52 includes a pair of left and right second side frame portions 53L and 53R coupled to the left and right first side frame portions 51L and 51R at the rear ends, and front ends of the second side frame portions 53L and 53R.
- a second front frame portion 53F that is connected and extends from side to side is provided. Due to the second side frame portions 53L and 53R and the second front frame portion 53F, the second headrest frame 52 has a generally inverted U shape when viewed from the front.
- the second side frame portions 53L and 53R are welded to the left and right inner surfaces of the first side frame portions 51L and 51R at the rear ends, respectively, and extend upward along the first side frame portions 51L and 51R. .
- the third headrest frame 54 connects the left and right third side frame portions 55L and 55R joined at the rear ends to the surfaces facing the left and right inner sides of the left and right first side frame portions 51L and 51R, and the front ends thereof, A third front frame portion 55F extending left and right is provided.
- the third side frame portions 55L and 55R are the front surfaces of the first side frame portions 51L and 51R at the rear ends, respectively, and are connected to the first side frame portions 51L and 51R and the second side frame portions 53L and 53R. Is also welded to the upper side.
- the third side frame portions 55L and 55R respectively extend upward from the welded portions and bend, and extend obliquely forward and upward with respect to the first side frame portions 51L and 51R.
- the width in the left-right direction of the third front frame portion 55F is set to be wider than that of the second front frame portion 53F.
- the third front frame portion 55F abuts against the second front frame portion 53F from the rear, It is welded to the frame portion 53F. Due to the third side frame portions 55L and 55R and the third front frame portion 55F, the third headrest frame 55 has a generally inverted U shape when viewed from the front.
- the first headrest frame 50, the second headrest frame 52, and the third headrest frame 54 form a skeleton of the headrest portion S4.
- the connecting member 10 is formed of a bent metal plate and is coupled to the left and right backside frames 1L, 1R. As shown in FIG. 4, the left and right connecting members 10 are formed so as to be symmetrical.
- the connecting members 10 are arranged vertically apart from each other, and each of the two frame coupling portions 12 coupled to the backside frame 1R and the cover coupling portion disposed between the two frame coupling portions. 14 and two leg pieces 16 for connecting the frame coupling portion 12 and the cover coupling portion 14 respectively.
- the upper frame coupling portion 12U is formed in a plate shape along the rear side surface of the rear wall of the backside frame 1R. In the present embodiment, in accordance with the shape of the backside frame 1R, the upper frame coupling portion 12U has a substantially triangular shape when viewed from the front.
- the lower frame coupling portion 12D is also formed in a plate shape along the rear side surface of the rear wall of the back side frame 1R, and has a substantially square shape when viewed from the front.
- the left and right widths of the upper and lower frame coupling portions 12U and 12D are formed to be substantially equal.
- the cover coupling portion 14 is disposed between the upper and lower frame coupling portions 12U and 12D in a front view and spaced rearward from the wall surface of the back wall of the back side frame 1R. It is formed in a parallel plate shape.
- the cover coupling portion 14 has a substantially square shape when viewed from the front, and the width in the left-right direction is substantially equal to the width in the left-right direction of the upper and lower frame coupling portions 12U and 12D.
- a screw hole 18 penetrating in the front-rear direction is formed at a substantially central position in the vertical and horizontal directions of the cover coupling portion 14. Furthermore, a notch 20 that is recessed outward is provided at the left and right inner edges of the cover coupling portion.
- the upper leg piece portion 16U is formed in a plate shape extending substantially upward and rearward, and the base end is substantially the center in the left-right direction of the lower edge of the upper frame coupling portion 12U.
- the projecting end is coupled to the substantially central position in the left-right direction of the upper edge of the cover coupling portion 14.
- the lower leg piece portion 16D is formed in a plate shape extending substantially downward and rearward, the base end is coupled to the substantially central position in the left-right direction of the lower edge of the cover coupling portion 14, and the protruding end is coupled to the lower frame.
- the upper edge of the portion 12D is coupled to a substantially central position in the left-right direction.
- the widths of the upper and lower leg pieces 16U, 16D in the left-right direction are both larger than the widths of the frame connecting parts 12U, 12D and the cover connecting part 14 in the left-right direction.
- the leg pieces 16U and 16D are set to have a width in the left-right direction so that the rigidity of the leg pieces 16U and 16D is smaller than the rigidity of the back cover C2.
- the connecting member 10 is positioned with respect to the back side frame 1R using a positioning member that fits into the screw hole 18 and the cutout portion 20, the upper edge of the upper frame coupling portion 12U and the lower frame coupling portion 12D.
- the lower edge is welded to the back side frame 1R.
- FIGS. 8A and 8B the spot to be welded in the present embodiment is shown in gray.
- the front cover C1 includes a pad member 36 that is a cushioning material that joins the seat back frame F3 from the front, and a skin material 37 that covers the front side of the pad member 36.
- a through hole 39 penetrating back and forth is formed at a position corresponding to the vent S5 of the pad member 36.
- an opening is formed in the skin material 37 at a position corresponding to the vent S5.
- a resin garnish 40 extending substantially in the rear is fitted in the opening of the skin material and the through hole 39 of the pad member 36.
- a plurality of locking claws (not shown) projecting in the inner circumferential direction are formed on the outer periphery of the rear end of the garnish 40.
- the back cover C2 is a resin plate member disposed along the back surface of the seat back S2, and is formed symmetrically.
- the back cover C ⁇ b> 2 includes a base portion 60 having a substantially square shape, and a head portion 61 that extends upward from the upper edge portion of the base portion 60 continuously to the base portion 60.
- the back cover C2 is coupled to the back surface of the seat back S2 so that the base 60 covers the backrest portion of the vehicle seat S and the head 61 covers the headrest portion S4 of the vehicle seat S.
- a pair of left and right through-holes 62 are formed in the upper portion of the base 60 at a position corresponding to the vent S5, and a cylindrical cover connecting portion 63 extends forward from the edge.
- a plurality of engagement holes which are through-holes arranged so as to be aligned along the front end edge, are formed at the front end of the cover connecting portion 63.
- the engagement hole is disposed at a position where it engages with the locking claw of the garnish 40.
- a cover side locking portion 68 that is paired on the left and right sides of the back cover C2 is provided at the upper portion of the back cover C2 and at the substantially central portion in the vertical direction.
- a through hole 72 penetrating the back cover C2 back and forth is provided at a position below the base 60 of the back cover C2 and below the cover side locking portion 68 and corresponding to the screw hole 18 of the connecting member 10. ing.
- a countersink process for sinking the screw head is applied to the rear opening edge of the through hole 72.
- the back cover C ⁇ b> 2 is coupled to the seat back frame F ⁇ b> 3 by engaging the cover side locking portion 68 and the frame side locking portion 32. Further, the locking claw of the garnish 40 is fitted into the engagement hole of the back cover C2, and the front cover C1 and the back cover C2 are fixed to the seat back frame F3. Further, the lower part of the back cover C2 is fixed to the seat back frame F3 by passing a screw through the through hole 62 of the back cover C2 and coupling it to the screw hole 18 provided in the connecting member 10. As a result, the front cover C1 and the back cover C2 are joined to the seat back frame F3, and the seat back S2 is completed.
- the fragile portion 4 of the back upper frame 3 is formed in a semicircular shape in cross-sectional view, and the other part of the back upper frame 3 is formed in a circular shape in cross-sectional view.
- the fragile portion 4 is less rigid than the other portions. Therefore, the back upper frame 3 is bent backward at the fragile portion 4 and plastically deformed due to the backward load. Since the load is absorbed by the deformation of the fragile portion 4, the load applied to the occupant's neck is reduced.
- the left connecting portion 56L and the right connecting portion 56R are also connected by the fragile portion 4, when a rearward load is applied to the occupant's neck, the space between the left connecting portion 56L and the right connecting portion 56R. The fragile part 4 is also deformed. Therefore, the load applied to the occupant's neck is further reduced.
- the headrest frame 7 is fixed to the back upper frame 3, when the collision load is applied, the headrest frame 7 moves with respect to the backrest S3, and the possibility of applying an impact to the occupant is reduced. Furthermore, since the headrest frame 7 is fixed to the back upper frame 3, the load applied to the occupant's head is easily transmitted to the back upper frame 3, and the load applied to the upper body of the occupant is further reduced.
- the fragile portion 4 is formed by deforming a pipe-like member constituting the back upper frame 3 so as to form a semicircular shape in a sectional view. Therefore, a weak part can be provided easily. Further, since the front wall of the fragile portion 4 is formed in a semicircular arc shape in a sectional view and the headrest frame 7 is coupled to the front wall, the area of the portion where the headrest frame 7 and the back upper frame 3 are coupled is large. It becomes easy to bond more firmly.
- the back upper frame 3 is unlikely to come off the headrest frame 7 when a load is applied to the vehicle seat S from the front.
- both the second headrest frame 52 and the third headrest frame 54 are coupled to the first headrest frame 50 at different locations, the load applied to the headrest portion S4 is applied to different locations of the first headrest frame 50. Is distributed. Therefore, the load is not concentrated and the first headrest frame 50 is not easily deformed.
- the second headrest frame 52 is joined at the rear end so as to extend forward with respect to the first headrest frame 50 to form a surface 51S. Therefore, the 2nd headrest frame 52 can support the load to the back added to a crew member's head. Since the third front frame portion 55F is welded to the rear side of the second front frame portion 53F, the load applied to the second headrest frame 52 is also transmitted to the third headrest frame 54 and is applied to the first headrest frame 50. Does not concentrate.
- the head of an occupant sitting on the rear seat may collide with the upper part of the headrest portion S4 during a rear collision.
- the third headrest frame 54 since the third headrest frame 54 is provided so as to extend forward and upward, the third headrest frame 54 can support a load from the upper portion of the headrest portion S4.
- the second front frame portion 53F is welded to the front side of the third front frame portion 55F, and the upper surface of the second front frame portion 53F and the upper surface of the third front frame portion 55F are formed to be aligned. Therefore, the load applied to the upper portion of the headrest portion S4 is also applied to the second headrest frame 52, and the load applied to the first headrest frame 50 is not concentrated.
- the vehicle seat S may be bent so as to warp forward (for example, FIG. 11). Due to this bending, as indicated by the black arrows in FIG. 11, a load directed rearward and upward is applied to the backside frames 1L and 1R, and a load directed forward and downward is applied to the back cover C2. With these loads, a shear load is applied to the connecting member 10 that joins the back side frames 1L, 1R and the back cover C2.
- the leg pieces 16U and 16D have a smaller width in the left-right direction compared to the cover coupling portion 14 and the frame coupling portions 12U and 12D, and the cover coupling portion 14 and the frame coupling. Rigidity is low compared to the portions 12U and 12D. Therefore, the leg pieces 16U and 16D are more easily deformed than the cover coupling portion 14 with respect to the load generated at the coupling portion between the back cover C2 and the back side frames 1L and 1R. The load generated in the coupling portion is easily absorbed by the leg pieces 16U and 16D, and the portion where the back cover C2 and the cover coupling portion 14 are coupled is not easily deformed, so that the back cover C2 is protected.
- the width of the leg pieces 16U, 16D in the left-right direction is such that the rigidity of the leg pieces 16U, 16D is smaller than that of the back cover C2, and the rigidity of the cover coupling portion 14 and the frame coupling portions 12U, 12D is greater than that of the back cover C2. It is set to be large. Therefore, when a shear load is applied, the connecting member 10 is deformed and the load is absorbed, so that the back cover C2 is difficult to deform.
- the gap is formed between the seat back frame F3 and the back cover C2
- a space in which the leg pieces 16U and 16D can be deformed is secured. Due to the deformation of the leg pieces 16U and 16D, the load applied to the back cover C2 is reduced, and the back cover C2 becomes difficult to deform. Further, since a gap is formed between the seat back frame F3 and the back cover C2, the screw can be turned until it protrudes into the gap. Therefore, it is not necessary to strictly determine the length of the screw, and the back cover C2 can be easily coupled to the seat back frame F3.
- the back cover C2 is provided with a cover side locking portion 68, and the back cover C2 is coupled to the frame side locking portion 32 at one end side (upper side) in the vertical direction.
- the connecting member 10 is provided at the other end (lower end) in the vertical direction of the back cover C2, and the back cover C2 is coupled to the frame side locking portion 32 at the lower end. Since the frame side locking portion 32 and the back cover C2 are arranged at different heights, the back cover C2 having a shape extending in the vertical direction can be reliably coupled to the seat back frame F3.
- the cover-side locking portion 68 can be locked to the frame-side locking portion 32 and then screwed, and the seat back frame F3 can be secured. And the back cover C2 can be easily assembled.
- the seat back frame F3 and the back cover C2 can be easily coupled by the connecting member 10. Since the connecting member 10 and the seat back frame F3 are connected via the two frame coupling portions 12U and 12D, the coupling between the seat back frame F3 and the back cover C2 is strengthened.
- the fragile portion 104 may be formed as a portion in which the back upper frame 3 is deformed flat. Also in this case, the fragile portion 104 bends backward due to a backward load, so that the load applied to the occupant's neck is reduced. Moreover, since the rigidity can be lowered by the deformation of the back upper frame 3 as in the above embodiment, it is easy to provide the fragile portion 104.
- the fragile portion 104 when the fragile portion 104 is formed as a flatly deformed portion, as compared with the case where the fragile portion 4 is formed in a semicircular shape in a sectional view as shown in FIG. The rigidity of the fragile portion 104 is reduced. Therefore, when the fragile portion 104 is formed as a flatly deformed portion, the back upper frame 3 can be bent with a lower load, and the load applied to the occupant's neck can be reduced even with a lower load. it can. Thus, the threshold value of the load that causes deformation can be adjusted by the shape of the back upper frame 3.
- the weakened portion 204 may be formed by forming an opening portion 200 of a predetermined size penetrating inside the back upper frame 3.
- the rigidity between the locations where the first side frame parts 51L and 51R are welded becomes smaller than the rigidity of the other parts of the back upper frame 3. Therefore, also in the back upper frame 3 shown in FIG. 13, when a backward load is applied, the back upper frame 3 bends backward, so that the load applied to the occupant's neck is reduced.
- the rigidity can be reduced by forming the opening 200, it is easy to provide the fragile portion 204.
- the opening 200 may be formed to extend in the vertical direction at a substantially central position in the left-right direction of the back upper frame 3.
- the back upper frame 3 bends backward at a substantially central position in the left-right direction. Therefore, the load applied to the occupant's neck is effectively absorbed by the deformation of the back upper frame 3, and the load applied to the occupant's neck is easily reduced.
- the width in the left-right direction of the leg piece 16 is set to be smaller than the frame coupling part 12 and the cover coupling part 14.
- any configuration may be used as long as the rigidity of the leg piece portion 16 is lower than that of the back cover C2.
- the leg piece 16 may have a lower rigidity than the back cover C2 by reducing the width (thickness) of the leg piece 16 in the front-rear direction. Only a part of the leg piece 16 may be provided with a portion having a small width in the left-right direction to reduce the rigidity of the leg piece 16.
- the width in the left-right direction of the upper leg piece 16U is configured to be smaller than the width of the cover coupling portion 14 and the width of the frame coupling portions 12U and 12D. May be.
- the connecting member 10 functions as a fragile portion that deforms when the above-described load is applied, and the back cover C2 is less likely to be deformed.
- the frame coupling portion 12 may be arranged on the top and bottom and the left (or right) with respect to the cover coupling portion 14, and each frame coupling portion 12 may be coupled to the cover coupling portion 14 via the leg piece portion 16. .
- the width in the left-right direction of the leg piece portion 16 extending in the vertical direction is set to be smaller than the width of the frame coupling portion 12 and the cover coupling portion 14, and the vertical direction of the leg piece portion 16 extending in the left-right direction. Is preferably set to be smaller than the width of the frame coupling portion 12 and the cover coupling portion 14.
- the connecting member 10 shown in FIG. 8 is rotated by 90 degrees, and the cover coupling portion 14 and the frame coupling portion 12 are arranged so as to be aligned in the left-right direction. It may be attached to 1R.
- the leg piece 16 connects the right edge of the left frame coupling portion 12 and the left edge of the cover coupling portion 14 to the left edge of the right frame coupling portion 12 and the right edge of the cover coupling portion 14. Yes.
- the vertical width of the leg piece 16 may be set smaller than the width of the frame coupling part 12 and the cover coupling part 14. Even in this case, when a load toward the front is applied to the cover coupling portion 14, the leg piece portion 16 is deformed and the load applied to the back cover C2 is reduced, so that the back cover C2 is hardly deformed.
- the cover coupling portion 14 is located behind the frame coupling portion 12, a gap between the seat back frame F3 and the back cover C2 can be reliably provided, and the connecting member 10 Space required for deformation is secured. Moreover, since the connection member 10 and the seat back frame F3 are connected at two places as in the above-described embodiment, the coupling between the seat back frame F3 and the back cover C2 becomes strong.
- a connecting structure 110 that connects the back cover C2 and the back side frames 1L, 1R is provided by providing through holes 108 that pass through the back side frames 1L, 1R in the front-rear direction. It may be configured.
- the connection structure 110 shown in FIG. 14 (C) has a pair of through-holes 108 that are symmetrically formed on the rear walls of the back side frames 1L and 1R and that are substantially U-shaped and face each other.
- a pair of cover coupling portions 112 having a substantially square shape defined by the through-holes 108, and upper and lower ends of the cover coupling portion 112 and a frame main body 114 serving as a main body of the back side frames 1L and 1R, respectively.
- Leg piece 116 is provided by providing through holes 108 that pass through the back side frames 1L, 1R in the front-rear direction. It may be configured.
- the connection structure 110 shown in FIG. 14 (C) has a pair of through-holes 108 that are symmetrically formed on the rear walls
- a screw hole 118 penetrating in the front-rear direction is provided at a substantially central position in the left-right and vertical directions of the cover coupling portion 112.
- the back cover C2 is screwed to the cover coupling portion 112 through a through-hole 62 provided in the lower portion, and is fixed to the back side frames 1L and 1R.
- connection structure 110 In the connection structure 110 shown in FIG. 14C, the cover coupling portion 112 is surrounded by a pair of through-holes 108, and the back side frames 1L and 1R are framed via leg pieces 116 provided on the upper and lower sides, respectively. It is connected to the main body 114. Therefore, when a forward load is applied to the cover coupling portion 112, the leg piece portion 116 is deformed, and the load applied to the back cover C2 is reduced, so that the effect that the back cover C2 becomes difficult to deform is obtained. Further, the connection structure 110 has an advantage that the leg piece portion 116 that can reduce the load applied to the back cover can be provided without providing the connection member 10 separately.
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Abstract
[PROBLEM] To provide a vehicle seat capable of reducing a load applied to a cervical part of an occupant. [SOLUTION] According to the present invention, a vehicle seat (S) is provided with: a seat back frame (F3) that includes a pair of left- and right-side frames (1L, 1R) extending in the vertical direction, and an upper frame (3) connecting upper portions of the side frames (1L, 1R); and a headrest frame (7) that is coupled to the upper frame (3), wherein a fragile portion (4) having a rigidity lower than other portions of the upper frame (3) is provided on at least a portion of the upper frame (3).
Description
本発明は、自動車等に搭載される乗物用シートであり、特に衝撃荷重が加わった際に乗員に加わる荷重を低減する機構を備えた乗物用シートに関する。
The present invention relates to a vehicle seat mounted on an automobile or the like, and more particularly to a vehicle seat provided with a mechanism for reducing a load applied to an occupant when an impact load is applied.
乗物用シートには、後突時に乗員の頭部に加わる荷重を低減するため、頭部に当接するヘッドレストのフレームに脆弱部を設けた乗物用シートがある(例えば、特許文献1)。特許文献1の乗物用シートでは、ヘッドレストのフレームはパイプによって形成され、ヘッドレスト内部において横断面が扁平をなすように変形された脆弱部を備えている。後突時にはヘッドレストは乗員の頭部を後側から支持すると共に、脆弱部が塑性変形するため、乗員の頭部に加わる荷重が低減される。
As a vehicle seat, there is a vehicle seat in which a weak portion is provided in a frame of a headrest that contacts the head in order to reduce a load applied to the head of the occupant at the time of a rear collision (for example, Patent Document 1). In the vehicle seat of Patent Document 1, the frame of the headrest is formed by a pipe, and includes a fragile portion that is deformed so as to have a flat cross section inside the headrest. At the time of a rear collision, the headrest supports the passenger's head from the rear side, and the fragile portion is plastically deformed, so that the load applied to the passenger's head is reduced.
しかしながら、特許文献1の乗物用シートでは後突時の荷重によって、ヘッドレストのフレームが後方へ湾曲するように変形する。そのため、乗員の胴体に対して頭部が後方へ移動し、頸部に荷重が加わる虞がある。
However, the vehicle seat of Patent Document 1 is deformed so that the frame of the headrest bends backward due to the load at the time of rear collision. Therefore, there is a possibility that the head moves backward with respect to the occupant's torso and a load is applied to the neck.
本発明は、以上の背景を鑑み、乗員の頸部に加わる荷重を低減することのできる乗物用シートを提供することを課題とする。
In view of the above background, an object of the present invention is to provide a vehicle seat that can reduce the load applied to the neck of an occupant.
上記課題を解決するために、上下方向に延在する左右一対のサイドフレーム(1L、1R)、及び、両サイドフレームの上部を接続するアッパフレーム(3)を含むシートバックフレーム(F3)と、前記アッパフレームに結合されたヘッドレストフレーム(7)とを有し、前記アッパフレームの少なくとも一部に、前記アッパフレームの他の部分に比べ剛性の小さい脆弱部(4、100)が設けられているとよい。
In order to solve the above problems, a seat back frame (F3) including a pair of left and right side frames (1L, 1R) extending in the vertical direction and an upper frame (3) connecting the upper portions of both side frames; A headrest frame (7) coupled to the upper frame, and at least a portion of the upper frame is provided with a weakened portion (4, 100) having a lower rigidity than other portions of the upper frame. Good.
この構成によれば、脆弱部が変形することによって、乗員に加わる荷重を低減することができる。また、アッパフレームがシートバックフレームに結合されているため、乗員からの荷重が脆弱部に伝わり易い。
According to this configuration, the load applied to the occupant can be reduced when the fragile portion is deformed. Further, since the upper frame is coupled to the seat back frame, the load from the occupant is easily transmitted to the fragile portion.
また、上記の構成において、前記ヘッドレストフレームは、前記脆弱部のうち最も左側に位置する左端部(4L)と最も右側に位置する右端部(4R)との間において、前記アッパフレームに接続しているとよい。
In the above configuration, the headrest frame is connected to the upper frame between the left end portion (4L) located on the leftmost side and the right end portion (4R) located on the rightmost side of the weakened portion. It is good to be.
この構成によれば、乗員の上半身に加わる荷重によって、ヘッドレストフレームが後方へ移動すると、脆弱部が変形するため、乗員の頸部に加わる荷重が低減される。
According to this configuration, when the headrest frame moves rearward due to the load applied to the upper body of the occupant, the fragile portion is deformed, so the load applied to the occupant's neck is reduced.
また、上記の構成において、前記ヘッドレストフレームは前記アッパフレームに設けられた少なくとも2つ以上の接続部を介して接続し、前記接続部のうち最も左側に位置する左側接続部(51L)及び前記左端部が前記脆弱部によって接続され、前記接続部のうち最も右側に位置する右側接続部(51R)及び前記右端部が前記脆弱部によって接続されているとよい。
In the above configuration, the headrest frame is connected via at least two or more connecting portions provided in the upper frame, and the leftmost connecting portion (51L) located on the leftmost side of the connecting portions and the left end It is good that a part is connected by the said weak part, and the right side connection part (51R) located in the rightmost side among the said connection parts, and the said right end part are connected by the said weak part.
この構成によれば、ヘッドレストフレームが荷重に応じて移動しやすくなるため、より脆弱部が変形しやすくなり、乗員の頸部に加わる荷重が低減される。
This configuration makes it easier for the headrest frame to move according to the load, so that the fragile portion is more easily deformed and the load applied to the occupant's neck is reduced.
また、上記の構成において、前記アッパフレームの前記左側接続部と前記右側接続部との間が前記脆弱部によって接続されているとよい。
Further, in the above configuration, the left connection portion and the right connection portion of the upper frame may be connected by the weak portion.
この構成によれば、乗員の頸部の後方に位置する脆弱部が変形しやすくなるため、より乗員の頸部に加わる荷重が低減される。
According to this configuration, the weakened portion located behind the occupant's neck is easily deformed, so that the load applied to the occupant's neck is further reduced.
また、上記の構成において、前記ヘッドレストフレームは前記アッパフレームに固定されているとよい。
In the above configuration, the headrest frame may be fixed to the upper frame.
この構成によれば、乗員の頭部に加わる荷重がアッパフレームに伝わり易くなるため、乗員の上半身に加わる荷重がより低減される。
According to this configuration, since the load applied to the occupant's head is easily transmitted to the upper frame, the load applied to the occupant's upper body is further reduced.
また、上記の構成において、前記アッパフレームはパイプ状部材によって形成され、前記脆弱部は断面視で半円形をなすとよい。
In the above configuration, the upper frame may be formed of a pipe-shaped member, and the weakened portion may be semicircular when viewed in cross section.
この構成によれば、脆弱部を容易に構成することができる。
According to this configuration, the vulnerable part can be easily configured.
また、上記の構成において、前記脆弱部の前壁が断面視で半円弧状に形成され、後壁が断面視で板状に形成され、前記脆弱部の前面に前記ヘッドレストフレームが結合しているとよい。
In the above configuration, the front wall of the fragile portion is formed in a semicircular arc shape in a cross-sectional view, the rear wall is formed in a plate shape in a cross-sectional view, and the headrest frame is coupled to the front surface of the fragile portion. Good.
この構成によれば、ヘッドレストフレームとアッパフレームとが結合する部分の面積を広くすることができるため、ヘッドレストフレームとアッパフレームとを結合しやすくなる。
According to this configuration, since the area of the portion where the headrest frame and the upper frame are coupled can be increased, the headrest frame and the upper frame can be easily coupled.
また、上記の構成において、前記アッパフレームはパイプ状部材によって形成され、前記脆弱部は断面視で扁平をなすとよい。
In the above configuration, the upper frame may be formed of a pipe-like member, and the weakened portion may be flattened in a sectional view.
この構成によれば、脆弱部をアッパフレームの変形によって容易に構成することができる。また、アッパフレームを結合部の間の剛性を半円形とするよりも低くすることができる。
According to this configuration, the fragile portion can be easily configured by deformation of the upper frame. Further, the rigidity of the upper frame between the coupling portions can be made lower than that of a semicircle.
また、上記の構成において、前記アッパフレームはパイプ状部材によって形成され、前記脆弱部の側面には内部に向けて貫通する開口部が形成されているとよい。
In the above configuration, the upper frame may be formed of a pipe-like member, and an opening that penetrates toward the inside may be formed on a side surface of the fragile portion.
この構成によれば、乗員の頸部に加わる荷重を低減するための脆弱部をアッパフレームに開口部を設けることで容易に構成することができる。
According to this configuration, the fragile portion for reducing the load applied to the occupant's neck can be easily configured by providing the opening in the upper frame.
また、上記の構成において、前記開口部が前記アッパフレームの左右方向の略中央の位置において、上下方向に延在しているとよい。
Further, in the above configuration, it is preferable that the opening extends in the vertical direction at a substantially central position in the horizontal direction of the upper frame.
この構成によれば、乗員の頸部に荷重が加わると、アッパフレームの左右方向の略中央の位置において後方に折曲がるため、乗員の頸部に加わる荷重がアッパフレームの変形によって吸収され、乗員の頸部に加わる荷重が低減される。
According to this configuration, when a load is applied to the occupant's neck, the load is applied to the occupant's neck by the deformation of the upper frame because the upper frame is bent rearward at a substantially central position in the left-right direction. The load applied to the cervix is reduced.
また、上記の構成において、前記アッパフレームの前面に前記ヘッドレストフレームが結合しているとよい。
In the above configuration, the headrest frame may be coupled to the front surface of the upper frame.
この構成によれば、乗物用シートに前方から荷重が加わったときに、アッパフレームがヘッドレストフレームから外れ難くなる。
This structure makes it difficult for the upper frame to come off the headrest frame when a load is applied to the vehicle seat from the front.
以上の構成によれば、乗員の頸部に加わる荷重を低減することのできる乗物用シートを提供することが可能となる。
According to the above configuration, it is possible to provide a vehicle seat that can reduce the load applied to the neck of the occupant.
以下に本発明による乗物用シートの実施形態を、図1~図14を参照して説明する。以下の説明では、乗物用シートに着座した乗員を基準にして左右、及び内外を定める。左右一対設けられる構成については、共通の番号を付し、左右を特定するときは構成の名称に左又は右の文字を付す。
Hereinafter, embodiments of a vehicle seat according to the present invention will be described with reference to FIGS. In the following description, the left and right sides and the inside and outside are determined based on the occupant seated on the vehicle seat. About the structure provided in right and left, a common number is attached | subjected, and when specifying left and right, the left or right character is attached | subjected to the name of a structure.
図1に示すように、乗物用シートSは、シートクッションS1と、背もたれS3及びヘッドレスト部S4が一体として形成されたシートバックS2とを有する、いわゆるフルバケットシートである。シートクッションS1は、シートクッションフレームと、シートクッションフレームの上側に被せられたパッド及び表皮とを有し、乗員の臀部及び大腿部を支持する。シートクッションフレームは、前後に延びる左右一対のクッションサイドフレームF2と、両クッションサイドフレームF2の内側の側面を連結する複数のフレームとによって枠形に形成されている。シートバックS2には、乗員の概ね肩に対応する位置に前後に貫通する左右1対の通気口S5が形成されている。
As shown in FIG. 1, the vehicle seat S is a so-called full bucket seat having a seat cushion S1 and a seat back S2 in which a backrest S3 and a headrest portion S4 are integrally formed. The seat cushion S1 includes a seat cushion frame, a pad and an outer skin that are placed on the upper side of the seat cushion frame, and supports the occupant's buttocks and thighs. The seat cushion frame is formed in a frame shape by a pair of left and right cushion side frames F2 extending in the front-rear direction and a plurality of frames that connect the side surfaces inside the cushion side frames F2. The seat back S2 is formed with a pair of left and right vents S5 penetrating back and forth at a position corresponding substantially to the shoulder of the occupant.
図2に示されるように、シートバックS2は、シートバックフレームF3と、シートバックフレームF3の前側に被されるフロントカバーC1と、シートバックフレームF3の後方に設けられたバックカバーC2とを有する。図2、及び図3に示されるように、シートバックフレームF3は、対向する一対の左バックサイドフレーム1L及び右バックサイドフレーム1Rと、両バックサイドフレーム1L、1Rを接続するバックアッパフレーム3及びバックロアフレーム5と、バックアッパフレーム3に結合するヘッドレストフレーム7とを有する。
As shown in FIG. 2, the seat back S2 includes a seat back frame F3, a front cover C1 that covers the front side of the seat back frame F3, and a back cover C2 that is provided behind the seat back frame F3. . As shown in FIG. 2 and FIG. 3, the seat back frame F3 includes a pair of opposing left back side frame 1L and right back side frame 1R, and a back upper frame 3 connecting both the back side frames 1L and 1R, and A back lower frame 5 and a headrest frame 7 coupled to the back upper frame 3 are provided.
各バックサイドフレーム1L、1Rは金属製の板材によって水平な断面視で内側に向くコの字状に形成され略上下に延びている。各バックサイドフレーム1L、1Rは下端部において、リクライニング機構Rを介して各クッションサイドフレームF2の後端部にそれぞれ回動可能に結合している。リクライニング機構RはクッションサイドフレームF2に対する各バックサイドフレーム1L、1Rの傾倒角度を任意の角度に選択的に保持する。左バックサイドフレーム1L、及び右バックサイドフレーム1Rは左右方向に離間して配設され、シートバックS2の幅を形成している。左右のバックサイドフレーム1L、1Rの間には板状の架設部材8が設けられている。架設部材8は左右のバックサイドフレーム1L、1Rに、所定の弾性部材9を介して前後に変位可能に支持され、弾性力を以て乗員の背部を支持する。本実施形態では架設部材8は板状部材を用いて形成されているが、板状部材には限定されず、ランバーサポート機能をもたらす構成(例えば、ばね等)によって形成される公知の構成であってよい。
Each backside frame 1L, 1R is formed of a metal plate material in a U shape facing inward in a horizontal sectional view and extends substantially vertically. The back side frames 1L and 1R are rotatably coupled to the rear end portions of the cushion side frames F2 via the reclining mechanism R at the lower end portions. The reclining mechanism R selectively holds the tilt angle of each of the back side frames 1L, 1R with respect to the cushion side frame F2 at an arbitrary angle. The left back side frame 1L and the right back side frame 1R are spaced apart in the left-right direction and form the width of the seat back S2. A plate-like erection member 8 is provided between the left and right backside frames 1L, 1R. The erection member 8 is supported by the left and right back side frames 1L and 1R through a predetermined elastic member 9 so as to be displaceable back and forth, and supports the back of the occupant with elastic force. In this embodiment, the erection member 8 is formed using a plate-like member, but is not limited to the plate-like member, and is a known configuration formed by a configuration that provides a lumbar support function (for example, a spring). It's okay.
左右のバックサイドフレーム1L、1Rの下端部後壁には、図3に示されるように、バックサイドフレーム1L、1RとバックカバーC2とを連結する連結部材10が結合されている。
As shown in FIG. 3, a connecting member 10 that connects the back side frames 1L, 1R and the back cover C2 is coupled to the rear walls of the lower end portions of the left and right back side frames 1L, 1R.
図3に示されるように、バックアッパフレーム3は背面視で下方に向く逆U字状に屈曲された1つの連続したパイプ部材によって形成され、両バックサイドフレーム1L、1Rの上端部を接続している。バックアッパフレーム3は左右方向に延在する肩部3Aと、肩部の両端からそれぞれ下方に延びる腕部3Bを有し、腕部3Bの下端においてそれぞれ対応するバックサイドフレーム1L、1Rの内側面の上部に一部が重なり溶接等によって結合されている。図6に示されるように、肩部3Aには側面視で後方に向く壁面を有する半円形をなすように変形された脆弱部4が設けられている。脆弱部4は、図3の斜線で示されるように、肩部3Aの左右方向概ね中央に所定の範囲に渡って形成されている。換言すれば、バックアッパフレーム3は、脆弱部4の左端部4Lから右端部4Rまでの間において、前方を向く半円弧状の壁面と、後方を向く平面上の壁面を有するように変形されている。更に、バックアッパフレーム3の上部の左右両端にはそれぞれ、シートバックS2の乗員の肩部に当接する部分を構成するためのサブフレーム6が設けられている。
As shown in FIG. 3, the back upper frame 3 is formed by one continuous pipe member bent in an inverted U shape facing downward when viewed from the back, and connects the upper ends of both the back side frames 1L and 1R. ing. The back upper frame 3 has a shoulder portion 3A extending in the left-right direction and arm portions 3B extending downward from both ends of the shoulder portion, and inner surfaces of the corresponding back side frames 1L and 1R at the lower ends of the arm portions 3B. A part of the upper part overlaps and is joined by welding or the like. As shown in FIG. 6, the shoulder portion 3 </ b> A is provided with a fragile portion 4 that is deformed so as to form a semicircle having a wall surface facing rearward in a side view. The fragile portion 4 is formed over a predetermined range approximately at the center in the left-right direction of the shoulder portion 3A, as indicated by the oblique lines in FIG. In other words, the back upper frame 3 is deformed so as to have a semicircular arc-shaped wall surface facing forward and a planar wall surface facing rearward between the left end portion 4L and the right end portion 4R of the fragile portion 4. Yes. Further, sub-frames 6 are provided on the left and right ends of the upper portion of the back upper frame 3 to form portions that contact the shoulder of the occupant of the seat back S2.
左右のバックサイドフレーム1L、1Rの内側であり架設部材8の左右方向外側には、バックアッパフレーム3と左右のバックサイドフレーム1L、1Rとを接続するワイヤ状のサブサイドフレーム30LU、30RUが設けられている。サブサイドフレーム30LU、30RUの所定の位置に左右に対をなすフレーム側係止部32が設けられている。本実施形態では、フレーム側係止部32は上下方向に延びるワイヤとして形成されている。更に、左右のサブサイドフレーム30LU、30RUの下方には、環状をなすワイヤ状に形成され、両端が左バックサイドフレーム1L、1Rに結合されたサブサイドフレーム30LD、30RDが設けられている。サブサイドフレーム30LD、30RDにも同様に、フレーム側係止部32が形成されている。フレーム側係止部32は全て、連結部材10より上方の所定の高さの位置に配置されている。
Wire-like sub-side frames 30LU and 30RU for connecting the back upper frame 3 and the left and right back side frames 1L and 1R are provided inside the left and right back side frames 1L and 1R and outside the installation member 8 in the left and right direction. It has been. Frame-side locking portions 32 that are paired on the left and right are provided at predetermined positions of the sub-side frames 30LU and 30RU. In the present embodiment, the frame side locking portion 32 is formed as a wire extending in the vertical direction. Further, below the left and right sub-side frames 30LU and 30RU, there are provided sub-side frames 30LD and 30RD which are formed in the shape of a wire having an annular shape and whose both ends are coupled to the left back- side frames 1L and 1R. Similarly, the frame side latching portions 32 are formed in the sub-side frames 30LD and 30RD. All the frame side locking portions 32 are arranged at a predetermined height above the connecting member 10.
図4、図5、及び、図7に示されるように、ヘッドレストフレーム7は第1ヘッドレストフレーム50と、第1ヘッドレストフレーム50の上部前側に結合する第2ヘッドレストフレーム52及び第3ヘッドレストフレーム54とを有する。第1ヘッドレストフレーム50は上下に延びる左右1対の第1サイドフレーム部51L、51R、及び、第1サイドフレーム部の上端を接続し、左右に延在する第1アッパフレーム部51Uを有し、正面視で下方に向く略逆U字状に屈曲されたパイプ部材によって形成されている。第1サイドフレーム部51L、51Rの左側下端、及び右側下端は共に左端部4Lと右端部4Rとの間に配置され、バックアッパフレーム3の前側壁面に沿って略円弧状に屈曲している。左側、及び右側の第1サイドフレーム部51L、Rは、それぞれ、バックアッパフレーム3の前面の左側接続部56L、右側接続部56Rに溶接されている。このとき、左側接続部56Lは左端部4Lよりも右側に、右側接続部56Rは、右端部4Rよりも左側に配置されている。第1ヘッドレストフレーム50は、ヘッドレスト部S4の形状の一部を形作ると共にヘッドレストピラーとしても機能している。
As shown in FIGS. 4, 5, and 7, the headrest frame 7 includes a first headrest frame 50, a second headrest frame 52 and a third headrest frame 54 coupled to the upper front side of the first headrest frame 50. Have The first headrest frame 50 has a pair of left and right first side frame portions 51L and 51R extending vertically and a first upper frame portion 51U connecting the upper ends of the first side frame portions and extending left and right. It is formed by a pipe member bent in a substantially inverted U shape facing downward when viewed from the front. The lower left ends and the lower right ends of the first side frame portions 51L and 51R are both disposed between the left end portion 4L and the right end portion 4R, and are bent in a substantially arc shape along the front side wall surface of the back upper frame 3. The left and right first side frame portions 51L and 51R are welded to the left connection portion 56L and the right connection portion 56R on the front surface of the back upper frame 3, respectively. At this time, the left connection portion 56L is disposed on the right side of the left end portion 4L, and the right connection portion 56R is disposed on the left side of the right end portion 4R. The first headrest frame 50 forms a part of the shape of the headrest portion S4 and also functions as a headrest pillar.
第2ヘッドレストフレーム52は、左右の第1サイドフレーム部51L、51Rにそれぞれ後端で結合する左右1対の第2サイドフレーム部53L、53R、及び、第2サイドフレーム部53L、53Rの前端を接続し、左右に延びる第2フロントフレーム部53Fを備えている。第2サイドフレーム部53L、53R、及び、第2フロントフレーム部53Fによって、第2ヘッドレストフレーム52は、正面視で概ね逆U字状をなしている。第2サイドフレーム部53L、53Rは、後端において、第1サイドフレーム部51L、51Rの左右内方に向く面にそれぞれ溶接され、第1サイドフレーム部51L、51Rに沿って上方に延びている。更に、第2サイドフレーム部53L、53Rは、第1サイドフレーム部51L、51Rに対して屈曲し、前方、且つ左右内方へ延びた後、上方へ屈曲し、側面視で略L字状をなしている。左右の第2サイドフレーム部53L、53Rの上端が左右方向に延在する第2フロントフレーム部53Fによって結合され、上下左右に延びる面51Sが形成されている。第2ヘッドレストフレーム52の面51Sは、乗員の頭部が当接するヘッドレスト部S4の前面を形成する。
The second headrest frame 52 includes a pair of left and right second side frame portions 53L and 53R coupled to the left and right first side frame portions 51L and 51R at the rear ends, and front ends of the second side frame portions 53L and 53R. A second front frame portion 53F that is connected and extends from side to side is provided. Due to the second side frame portions 53L and 53R and the second front frame portion 53F, the second headrest frame 52 has a generally inverted U shape when viewed from the front. The second side frame portions 53L and 53R are welded to the left and right inner surfaces of the first side frame portions 51L and 51R at the rear ends, respectively, and extend upward along the first side frame portions 51L and 51R. . Further, the second side frame portions 53L and 53R are bent with respect to the first side frame portions 51L and 51R, extend forward and leftward and rightward, then bend upward, and have a substantially L shape in a side view. There is no. The upper ends of the left and right second side frame portions 53L and 53R are joined by a second front frame portion 53F extending in the left-right direction to form a surface 51S extending in the up-down and left-right directions. The surface 51S of the second headrest frame 52 forms the front surface of the headrest portion S4 with which the occupant's head abuts.
第3ヘッドレストフレーム54は、左右の第1サイドフレーム部51L、51Rの左右内側を向く面にそれぞれ後端で結合する左右の第3サイドフレーム部55L、55R、及び、それらの前端を接続し、左右に延びる第3フロントフレーム部55Fを備えている。第3サイドフレーム部55L、55Rは後端において、それぞれ、第1サイドフレーム部51L、51Rの前面であり、第1サイドフレーム部51L、51R、及び第2サイドフレーム部53L,53Rの結合箇所よりも上側に溶接されている。第3サイドフレーム部55L、55Rはそれぞれ、溶接箇所から上方に延びて屈曲し、第1サイドフレーム部51L、51Rに対して、前方斜め上方に延びている。第3フロントフレーム部55Fの左右方向の幅は、第2フロントフレーム部53Fよりも広くなるように設定され、第3フロントフレーム部55Fは第2フロントフレーム部53Fに後方から当接、第2フロントフレーム部53Fに溶接されている。第3サイドフレーム部55L、55R、及び、第3フロントフレーム部55Fによって、第3ヘッドレストフレーム55は、正面視で概ね逆U字状をなしている。第1ヘッドレストフレーム50、第2ヘッドレストフレーム52、及び第3ヘッドレストフレーム54によって、ヘッドレスト部S4の骨格が形成されている。
The third headrest frame 54 connects the left and right third side frame portions 55L and 55R joined at the rear ends to the surfaces facing the left and right inner sides of the left and right first side frame portions 51L and 51R, and the front ends thereof, A third front frame portion 55F extending left and right is provided. The third side frame portions 55L and 55R are the front surfaces of the first side frame portions 51L and 51R at the rear ends, respectively, and are connected to the first side frame portions 51L and 51R and the second side frame portions 53L and 53R. Is also welded to the upper side. The third side frame portions 55L and 55R respectively extend upward from the welded portions and bend, and extend obliquely forward and upward with respect to the first side frame portions 51L and 51R. The width in the left-right direction of the third front frame portion 55F is set to be wider than that of the second front frame portion 53F. The third front frame portion 55F abuts against the second front frame portion 53F from the rear, It is welded to the frame portion 53F. Due to the third side frame portions 55L and 55R and the third front frame portion 55F, the third headrest frame 55 has a generally inverted U shape when viewed from the front. The first headrest frame 50, the second headrest frame 52, and the third headrest frame 54 form a skeleton of the headrest portion S4.
図8、図9、及び図10に示されるように、連結部材10は、折り曲げられた金属板によって形成され、左右のバックサイドフレーム1L、1Rに結合している。図4に示されるように、左右の連結部材10は左右対称をなすように形成されている。
As shown in FIGS. 8, 9, and 10, the connecting member 10 is formed of a bent metal plate and is coupled to the left and right backside frames 1L, 1R. As shown in FIG. 4, the left and right connecting members 10 are formed so as to be symmetrical.
図9に示されるように、連結部材10は上下に離間して並び、それぞれバックサイドフレーム1Rに結合する2つのフレーム結合部12と、2つのフレーム結合部の間に配設されたカバー結合部14と、フレーム結合部12とカバー結合部14とをそれぞれ連結する2つの脚片部16とを有する。上側のフレーム結合部12Uはバックサイドフレーム1Rの後壁の後側面に沿う板状に形成されている。本実施形態ではバックサイドフレーム1Rの形状に合わせ、上側のフレーム結合部12Uは正面視で略三角形状をなしている。下側のフレーム結合部12Dもまた、バックサイドフレーム1Rの後壁の後側面に沿う板状に形成され、正面視で略方形をなしている。上下のフレーム結合部12U、12Dの左右方向の幅は共に概ね等しくなるように形成されている。カバー結合部14は正面視で上下のフレーム結合部12U、12Dの間において、バックサイドフレーム1Rの後壁の壁面から後方に離間して配設され、バックサイドフレーム1Rの後壁の壁面に概ね平行な板状に形成されている。カバー結合部14は正面視で概ね方形をなし、その左右方向の幅は上下のフレーム結合部12U、12Dの左右方向の幅と共に概ね等しくなるように形成されている。
As shown in FIG. 9, the connecting members 10 are arranged vertically apart from each other, and each of the two frame coupling portions 12 coupled to the backside frame 1R and the cover coupling portion disposed between the two frame coupling portions. 14 and two leg pieces 16 for connecting the frame coupling portion 12 and the cover coupling portion 14 respectively. The upper frame coupling portion 12U is formed in a plate shape along the rear side surface of the rear wall of the backside frame 1R. In the present embodiment, in accordance with the shape of the backside frame 1R, the upper frame coupling portion 12U has a substantially triangular shape when viewed from the front. The lower frame coupling portion 12D is also formed in a plate shape along the rear side surface of the rear wall of the back side frame 1R, and has a substantially square shape when viewed from the front. The left and right widths of the upper and lower frame coupling portions 12U and 12D are formed to be substantially equal. The cover coupling portion 14 is disposed between the upper and lower frame coupling portions 12U and 12D in a front view and spaced rearward from the wall surface of the back wall of the back side frame 1R. It is formed in a parallel plate shape. The cover coupling portion 14 has a substantially square shape when viewed from the front, and the width in the left-right direction is substantially equal to the width in the left-right direction of the upper and lower frame coupling portions 12U and 12D.
カバー結合部14の上下及び左右方向の概ね中央の位置には前後に貫通する螺子孔18が形成されている。更に、カバー結合部の左右内方縁には外方に向かって凹んだ切欠部20が設けられている。
A screw hole 18 penetrating in the front-rear direction is formed at a substantially central position in the vertical and horizontal directions of the cover coupling portion 14. Furthermore, a notch 20 that is recessed outward is provided at the left and right inner edges of the cover coupling portion.
図9、及び図10に示されるように、上側の脚片部16Uは、概ね上方且つ後方へ延びる板状に形成され、基端が上側のフレーム結合部12Uの下縁の左右方向の略中央の位置に結合し、突端がカバー結合部14の上縁の左右方向の略中央の位置に結合している。下側の脚片部16Dは、概ね下方且つ後方へ延びる板状に形成され、基端がカバー結合部14の下縁の左右方向の略中央の位置に結合し、突端が下側のフレーム結合部12Dの上縁の左右方向の略中央の位置に結合している。上側、及び下側の脚片部16U、16Dの左右方向(脚片部16Uの延びる方向に直交する方向)の幅は共に、フレーム結合部12U、12D及びカバー結合部14の左右方向の幅よりも小さく、脚片部16U、16Dの左右方向の幅は、脚片部の16U、16Dの剛性がバックカバーC2の剛性よりも小さくなるように設定されている。
As shown in FIGS. 9 and 10, the upper leg piece portion 16U is formed in a plate shape extending substantially upward and rearward, and the base end is substantially the center in the left-right direction of the lower edge of the upper frame coupling portion 12U. The projecting end is coupled to the substantially central position in the left-right direction of the upper edge of the cover coupling portion 14. The lower leg piece portion 16D is formed in a plate shape extending substantially downward and rearward, the base end is coupled to the substantially central position in the left-right direction of the lower edge of the cover coupling portion 14, and the protruding end is coupled to the lower frame. The upper edge of the portion 12D is coupled to a substantially central position in the left-right direction. The widths of the upper and lower leg pieces 16U, 16D in the left-right direction (the direction perpendicular to the extending direction of the leg pieces 16U) are both larger than the widths of the frame connecting parts 12U, 12D and the cover connecting part 14 in the left-right direction. The leg pieces 16U and 16D are set to have a width in the left-right direction so that the rigidity of the leg pieces 16U and 16D is smaller than the rigidity of the back cover C2.
連結部材10は螺子孔18と切欠部20とに嵌合する位置決め部材を用いてバックサイドフレーム1Rに対する位置決めされた後、上側のフレーム結合部12Uの上縁、及び下側のフレーム結合部12Dの下縁においてバックサイドフレーム1Rに溶接される。図8(A)及び(B)には、本実施形態において溶接される箇所が灰色で示されている。
After the connecting member 10 is positioned with respect to the back side frame 1R using a positioning member that fits into the screw hole 18 and the cutout portion 20, the upper edge of the upper frame coupling portion 12U and the lower frame coupling portion 12D. The lower edge is welded to the back side frame 1R. In FIGS. 8A and 8B, the spot to be welded in the present embodiment is shown in gray.
図2に示されるように、フロントカバーC1はシートバックフレームF3を前方から結合する緩衝材であるパッド部材36とパッド部材36の前側を被覆する表皮材37とを有する。パッド部材36の通気口S5に対応する位置に前後に貫通する貫通孔39が形成されている。表皮材37にも、パッド部材36と同様に通気口S5に対応する位置に開口部が形成されている。表皮材の開口部、及びパッド部材36の貫通孔39には、概ね後方に筒状に延びる樹脂製のガーニッシュ40が嵌めこまれている。ガーニッシュ40の後端外周には内周方向へ突出する図示しない複数の係止爪が形成されている。
As shown in FIG. 2, the front cover C1 includes a pad member 36 that is a cushioning material that joins the seat back frame F3 from the front, and a skin material 37 that covers the front side of the pad member 36. A through hole 39 penetrating back and forth is formed at a position corresponding to the vent S5 of the pad member 36. Similarly to the pad member 36, an opening is formed in the skin material 37 at a position corresponding to the vent S5. A resin garnish 40 extending substantially in the rear is fitted in the opening of the skin material and the through hole 39 of the pad member 36. A plurality of locking claws (not shown) projecting in the inner circumferential direction are formed on the outer periphery of the rear end of the garnish 40.
バックカバーC2はシートバックS2の背面に沿って配設される樹脂製の板状部材であり、左右対称に形成されている。バックカバーC2は略方形をなす基部60と、基部60の上縁部から基部60に連続して上方に延びる頭部61とを有する。基部60が乗物用シートSの背もたれ部分を覆い、頭部61が乗物用シートSのヘッドレスト部S4を覆うように、バックカバーC2はシートバックS2の背面に結合する。基部60の上部には、通気口S5と対応する位置に左右1対の貫通孔62が形成され、その縁部から連続し前方に筒状のカバー接続部63が延びている。カバー接続部63の前端には、その前端縁に沿って並ぶように配置された貫通孔である係合孔が複数形成されている。係合孔は、ガーニッシュ40の係止爪と係合する位置に配置されている。バックカバーC2の上部、及び上下方向の略中央部にはそれぞれ、バックカバーC2の左右に対をなすカバー側係止部68が設けられている。
The back cover C2 is a resin plate member disposed along the back surface of the seat back S2, and is formed symmetrically. The back cover C <b> 2 includes a base portion 60 having a substantially square shape, and a head portion 61 that extends upward from the upper edge portion of the base portion 60 continuously to the base portion 60. The back cover C2 is coupled to the back surface of the seat back S2 so that the base 60 covers the backrest portion of the vehicle seat S and the head 61 covers the headrest portion S4 of the vehicle seat S. A pair of left and right through-holes 62 are formed in the upper portion of the base 60 at a position corresponding to the vent S5, and a cylindrical cover connecting portion 63 extends forward from the edge. A plurality of engagement holes, which are through-holes arranged so as to be aligned along the front end edge, are formed at the front end of the cover connecting portion 63. The engagement hole is disposed at a position where it engages with the locking claw of the garnish 40. A cover side locking portion 68 that is paired on the left and right sides of the back cover C2 is provided at the upper portion of the back cover C2 and at the substantially central portion in the vertical direction.
バックカバーC2の基部60の下部であって、カバー側係止部68の下方であり、連結部材10の螺子孔18に対応する位置に、バックカバーC2を前後に貫通する貫通孔72が設けられている。本実施形態では意匠性を高めるため、貫通孔72の後側開口縁部に螺子頭を沈めるための座繰り加工が施されている。
A through hole 72 penetrating the back cover C2 back and forth is provided at a position below the base 60 of the back cover C2 and below the cover side locking portion 68 and corresponding to the screw hole 18 of the connecting member 10. ing. In the present embodiment, in order to improve the design, a countersink process for sinking the screw head is applied to the rear opening edge of the through hole 72.
次に、乗物用シートSのシートバックS2の組立方法について説明する。図2に示されるように、カバー側係止部68とフレーム側係止部32とを係合させることによって、バックカバーC2をシートバックフレームF3に結合させる。更に、ガーニッシュ40の係止爪がバックカバーC2の係合孔に嵌合し、フロントカバーC1及びバックカバーC2がシートバックフレームF3に固定される。更に、バックカバーC2の貫通孔62に螺子を通し、連結部材10に設けられた螺子孔18に結合させることによって、バックカバーC2の下部がシートバックフレームF3に固定される。これによって、フロントカバーC1、及びバックカバーC2がシートバックフレームF3に結合し、シートバックS2が完成する。
Next, a method for assembling the seat back S2 of the vehicle seat S will be described. As shown in FIG. 2, the back cover C <b> 2 is coupled to the seat back frame F <b> 3 by engaging the cover side locking portion 68 and the frame side locking portion 32. Further, the locking claw of the garnish 40 is fitted into the engagement hole of the back cover C2, and the front cover C1 and the back cover C2 are fixed to the seat back frame F3. Further, the lower part of the back cover C2 is fixed to the seat back frame F3 by passing a screw through the through hole 62 of the back cover C2 and coupling it to the screw hole 18 provided in the connecting member 10. As a result, the front cover C1 and the back cover C2 are joined to the seat back frame F3, and the seat back S2 is completed.
次に、乗物用シートSの効果について説明する。後方からの衝撃が車体に加わると、乗員には後方に向かう慣性力が加わる。乗員に加わる慣性力によって乗員の頸部が後方へ移動し、シートバックS2の上部に後方への荷重が加わる。
Next, the effect of the vehicle seat S will be described. When an impact from the rear is applied to the vehicle body, an inertial force toward the rear is applied to the occupant. Due to the inertial force applied to the occupant, the occupant's neck moves backward, and a rearward load is applied to the upper portion of the seat back S2.
上述のように、バックアッパフレーム3の脆弱部4は断面視で半円状をなし、バックアッパフレーム3の他の部分は断面視で円形をなすように形成されているため、バックアッパフレーム3の脆弱部4は他の部分に比べ剛性が小さい。そのため、後方への荷重によってバックアッパフレーム3は脆弱部4において後方へ折曲がり塑性変形する。脆弱部4の変形によって荷重が吸収されるため、乗員の頸部に加わる荷重が低減される。
As described above, the fragile portion 4 of the back upper frame 3 is formed in a semicircular shape in cross-sectional view, and the other part of the back upper frame 3 is formed in a circular shape in cross-sectional view. The fragile portion 4 is less rigid than the other portions. Therefore, the back upper frame 3 is bent backward at the fragile portion 4 and plastically deformed due to the backward load. Since the load is absorbed by the deformation of the fragile portion 4, the load applied to the occupant's neck is reduced.
左側接続部56L、及び右側接続部56Rは共に、左端部4Lと右端部4Rとの間に設けられ、左側接続部56L及び左端部4Lと、右側接続部56R及び右端部4Rは共に脆弱部4によって接続されている。よって、乗員の上半身に加わる荷重によって、脆弱部4が変形し、ヘッドレストフレーム7の後方への移動が可能となる。脆弱部4の変形によって荷重が吸収されるため、乗員の頸部に加わる荷重が低減される。
The left connection portion 56L and the right connection portion 56R are both provided between the left end portion 4L and the right end portion 4R, and the left connection portion 56L and the left end portion 4L, and the right connection portion 56R and the right end portion 4R are both fragile portions 4. Connected by. Therefore, the weak part 4 is deformed by the load applied to the upper body of the occupant, and the headrest frame 7 can be moved rearward. Since the load is absorbed by the deformation of the fragile portion 4, the load applied to the occupant's neck is reduced.
また、左側接続部56Lと右側接続部56Rとの間も脆弱部4によって接続されているため、乗員の頸部に後方への荷重が加わると、左側接続部56Lと右側接続部56Rとの間の脆弱部4も変形する。そのため、乗員の頸部に加わる荷重がより低減される。
In addition, since the left connecting portion 56L and the right connecting portion 56R are also connected by the fragile portion 4, when a rearward load is applied to the occupant's neck, the space between the left connecting portion 56L and the right connecting portion 56R. The fragile part 4 is also deformed. Therefore, the load applied to the occupant's neck is further reduced.
また、ヘッドレストフレーム7はバックアッパフレーム3に固定されているため、衝突荷重が加わったときにヘッドレストフレーム7が背もたれS3に対して移動し、乗員に衝撃を加える虞が小さくなる。更に、ヘッドレストフレーム7はバックアッパフレーム3に固定されているため、乗員の頭部に加わる荷重がバックアッパフレーム3に伝わり易くなり、乗員の上半身に加わる荷重がより低減される。
Further, since the headrest frame 7 is fixed to the back upper frame 3, when the collision load is applied, the headrest frame 7 moves with respect to the backrest S3, and the possibility of applying an impact to the occupant is reduced. Furthermore, since the headrest frame 7 is fixed to the back upper frame 3, the load applied to the occupant's head is easily transmitted to the back upper frame 3, and the load applied to the upper body of the occupant is further reduced.
また、脆弱部4はバックアッパフレーム3を構成するパイプ状部材を断面視で半円形をなすように変形することによって形成されている。そのため、脆弱部を容易に設けることができる。また、脆弱部4の前壁が断面視で半円弧状に形成され、その前壁にヘッドレストフレーム7が結合しているため、ヘッドレストフレーム7とバックアッパフレーム3とが結合する部分の面積が大きくなり、より強固に結合しやすくなる。
Further, the fragile portion 4 is formed by deforming a pipe-like member constituting the back upper frame 3 so as to form a semicircular shape in a sectional view. Therefore, a weak part can be provided easily. Further, since the front wall of the fragile portion 4 is formed in a semicircular arc shape in a sectional view and the headrest frame 7 is coupled to the front wall, the area of the portion where the headrest frame 7 and the back upper frame 3 are coupled is large. It becomes easy to bond more firmly.
また、ヘッドレストフレーム7はバックアッパフレーム3の前面に結合しているため、乗物用シートSに前方から荷重が加わったときに、バックアッパフレーム3がヘッドレストフレーム7から外れ難い。
Further, since the headrest frame 7 is coupled to the front surface of the back upper frame 3, the back upper frame 3 is unlikely to come off the headrest frame 7 when a load is applied to the vehicle seat S from the front.
第2ヘッドレストフレーム52と第3ヘッドレストフレーム54とは、共に、異なる場所で第1ヘッドレストフレーム50に結合しているため、ヘッドレスト部S4に加わった荷重は第1ヘッドレストフレーム50の異なる場所に加わり荷重が分散される。そのため、荷重が集中せず、第1ヘッドレストフレーム50が変形しにくい。
Since both the second headrest frame 52 and the third headrest frame 54 are coupled to the first headrest frame 50 at different locations, the load applied to the headrest portion S4 is applied to different locations of the first headrest frame 50. Is distributed. Therefore, the load is not concentrated and the first headrest frame 50 is not easily deformed.
第2ヘッドレストフレーム52はその後端において第1ヘッドレストフレーム50に対して前方に延びるように結合し、面51Sを形成している。そのため、第2ヘッドレストフレーム52は、乗員の頭部に加わる後方への荷重を支持することができる。第3フロントフレーム部55Fは第2フロントフレーム部53Fの後側に溶接されているため、第2ヘッドレストフレーム52に加わった荷重が第3ヘッドレストフレーム54にも伝わり、第1ヘッドレストフレーム50に加わる荷重が集中しない。
The second headrest frame 52 is joined at the rear end so as to extend forward with respect to the first headrest frame 50 to form a surface 51S. Therefore, the 2nd headrest frame 52 can support the load to the back added to a crew member's head. Since the third front frame portion 55F is welded to the rear side of the second front frame portion 53F, the load applied to the second headrest frame 52 is also transmitted to the third headrest frame 54 and is applied to the first headrest frame 50. Does not concentrate.
後部座席に着座する乗員の頭部が、後突時などに、ヘッドレスト部S4の上部に衝突することがある。図7に示されるように、第3ヘッドレストフレーム54が前方且つ上方に延びるように設けられているため、第3ヘッドレストフレーム54はヘッドレスト部S4の上部からの荷重を支持することができる。また、第2フロントフレーム部53Fが第3フロントフレーム部55Fの前側に溶接され、第2フロントフレーム部53Fの上面、及び、第3フロントフレーム部55Fの上面は揃うように形成されている。そのため、ヘッドレスト部S4の上部に加わる荷重は第2ヘッドレストフレーム52にも加わり、第1ヘッドレストフレーム50に加わる荷重が集中しない。
The head of an occupant sitting on the rear seat may collide with the upper part of the headrest portion S4 during a rear collision. As shown in FIG. 7, since the third headrest frame 54 is provided so as to extend forward and upward, the third headrest frame 54 can support a load from the upper portion of the headrest portion S4. Further, the second front frame portion 53F is welded to the front side of the third front frame portion 55F, and the upper surface of the second front frame portion 53F and the upper surface of the third front frame portion 55F are formed to be aligned. Therefore, the load applied to the upper portion of the headrest portion S4 is also applied to the second headrest frame 52, and the load applied to the first headrest frame 50 is not concentrated.
乗物用シートに衝突荷重が加わると、バックカバーとシートバックフレームとの結合部分に、バックカバーとシートバックフレームとの相対変位をもたらす方向の荷重が加わり、バックカバーが変形するという問題が生じることがある。したがって、バックカバーが変形しにくい乗物用シートを提供することが望ましい。
When a collision load is applied to the vehicle seat, a load in a direction that causes a relative displacement between the back cover and the seat back frame is applied to a joint portion between the back cover and the seat back frame, which causes a problem that the back cover is deformed. There is. Therefore, it is desirable to provide a vehicle seat in which the back cover is not easily deformed.
より詳細には、後方への荷重によってシートバックS2の上部が後方へ移動する。そのため、乗物用シートSが前方に向かって反るように撓む場合がある(例えば、図11)。この撓みによって、図11の黒矢印に示されるように、バックサイドフレーム1L、1Rには後方、且つ上方に向かう荷重が加わり、バックカバーC2には前方、且つ下方に向かう荷重が加わる。これらの荷重によって、バックサイドフレーム1L、1RとバックカバーC2とを結合する連結部材10にせん断荷重が加わる。
More specifically, the upper portion of the seat back S2 moves rearward due to the rearward load. Therefore, the vehicle seat S may be bent so as to warp forward (for example, FIG. 11). Due to this bending, as indicated by the black arrows in FIG. 11, a load directed rearward and upward is applied to the backside frames 1L and 1R, and a load directed forward and downward is applied to the back cover C2. With these loads, a shear load is applied to the connecting member 10 that joins the back side frames 1L, 1R and the back cover C2.
図8(A)及び(B)に示されるように、脚片部16U、16Dはカバー結合部14及びフレーム結合部12U、12Dに比べて左右方向の幅が小さく、カバー結合部14及びフレーム結合部12U、12Dに比べて剛性が低い。そのため、バックカバーC2とバックサイドフレーム1L、1Rとの結合部分に生じる荷重に対して、脚片部16U、16Dがカバー結合部14よりも変形しやすい。結合部分に生じる荷重は脚片部16U、16Dに吸収されやすく、バックカバーC2とカバー結合部14とが結合する部分が変形しにくくなるため、バックカバーC2が保護される。更に、脚片部16U、16Dの左右方向の幅は、脚片部16U、16Dの剛性がバックカバーC2よりも小さく、カバー結合部14及びフレーム結合部12U、12Dの剛性はバックカバーC2よりも大きくなるように設定されている。そのため、せん断荷重が加わると連結部材10が変形し、その荷重が吸収されるため、バックカバーC2が変形しにくくなる。
As shown in FIGS. 8A and 8B, the leg pieces 16U and 16D have a smaller width in the left-right direction compared to the cover coupling portion 14 and the frame coupling portions 12U and 12D, and the cover coupling portion 14 and the frame coupling. Rigidity is low compared to the portions 12U and 12D. Therefore, the leg pieces 16U and 16D are more easily deformed than the cover coupling portion 14 with respect to the load generated at the coupling portion between the back cover C2 and the back side frames 1L and 1R. The load generated in the coupling portion is easily absorbed by the leg pieces 16U and 16D, and the portion where the back cover C2 and the cover coupling portion 14 are coupled is not easily deformed, so that the back cover C2 is protected. Furthermore, the width of the leg pieces 16U, 16D in the left-right direction is such that the rigidity of the leg pieces 16U, 16D is smaller than that of the back cover C2, and the rigidity of the cover coupling portion 14 and the frame coupling portions 12U, 12D is greater than that of the back cover C2. It is set to be large. Therefore, when a shear load is applied, the connecting member 10 is deformed and the load is absorbed, so that the back cover C2 is difficult to deform.
また、シートバックS2の上部が後方へ移動すると、図11の白矢印に示されるように、バックカバーC2の下端が前方に押し出される荷重が加わる場合がある。その前方に向かう荷重によってカバー結合部14が前方へ押し出される。脚片部16U、16Dのカバー結合部の側の端部はフレーム結合部12U、12Dの側の端部よりも後方に位置しているため、シートバックフレームF3とバックカバーC2との間に隙間が形成されている。
そのため、カバー結合部14を前方へ押し出す荷重が加わったときに、脚片部16U、16Dが変形することができる。このように、シートバックフレームF3とバックカバーC2との間に隙間が形成されているため、脚片部16U、16Dが変形することのできる空間を確保されている。脚片部16U、16Dの変形によってバックカバーC2に加わる荷重が低減され、バックカバーC2が変形しにくくなる。また、シートバックフレームF3とバックカバーC2との間に隙間が形成されているため、螺子をその隙間に突出するまで回すことができる。そのため、螺子の長さを厳密に定める必要がなく、バックカバーC2をシートバックフレームF3に結合させやすい。 Further, when the upper portion of the seat back S2 moves rearward, as shown by the white arrow in FIG. 11, a load that pushes the lower end of the back cover C2 forward may be applied. Thecover coupling portion 14 is pushed forward by the load toward the front. Since the end portions of the leg piece portions 16U and 16D on the cover joint portion side are located behind the end portions on the frame joint portions 12U and 12D side, there is a gap between the seat back frame F3 and the back cover C2. Is formed.
Therefore, when the load which pushes the cover coupling |bond part 14 ahead is added, the leg piece parts 16U and 16D can deform | transform. Thus, since the gap is formed between the seat back frame F3 and the back cover C2, a space in which the leg pieces 16U and 16D can be deformed is secured. Due to the deformation of the leg pieces 16U and 16D, the load applied to the back cover C2 is reduced, and the back cover C2 becomes difficult to deform. Further, since a gap is formed between the seat back frame F3 and the back cover C2, the screw can be turned until it protrudes into the gap. Therefore, it is not necessary to strictly determine the length of the screw, and the back cover C2 can be easily coupled to the seat back frame F3.
そのため、カバー結合部14を前方へ押し出す荷重が加わったときに、脚片部16U、16Dが変形することができる。このように、シートバックフレームF3とバックカバーC2との間に隙間が形成されているため、脚片部16U、16Dが変形することのできる空間を確保されている。脚片部16U、16Dの変形によってバックカバーC2に加わる荷重が低減され、バックカバーC2が変形しにくくなる。また、シートバックフレームF3とバックカバーC2との間に隙間が形成されているため、螺子をその隙間に突出するまで回すことができる。そのため、螺子の長さを厳密に定める必要がなく、バックカバーC2をシートバックフレームF3に結合させやすい。 Further, when the upper portion of the seat back S2 moves rearward, as shown by the white arrow in FIG. 11, a load that pushes the lower end of the back cover C2 forward may be applied. The
Therefore, when the load which pushes the cover coupling |
バックカバーC2にはカバー側係止部68が設けられ、バックカバーC2はその上下方向の一端側(上側)においてフレーム側係止部32と結合する。バックカバーC2の上下方向の他端(下端)に連結部材10が設けられ、バックカバーC2はその下端においてフレーム側係止部32に結合している。フレーム側係止部32とバックカバーC2とが異なる高さに配置されているため、上下方向に延びた形状を有するバックカバーC2を確実にシートバックフレームF3に結合させることが可能となる。また、連結部材10がバックカバーC2の下端に設けられているため、カバー側係止部68をフレーム側係止部32に係止させた後、ねじ止めを行うことができ、シートバックフレームF3とバックカバーC2との組付が容易である。
The back cover C2 is provided with a cover side locking portion 68, and the back cover C2 is coupled to the frame side locking portion 32 at one end side (upper side) in the vertical direction. The connecting member 10 is provided at the other end (lower end) in the vertical direction of the back cover C2, and the back cover C2 is coupled to the frame side locking portion 32 at the lower end. Since the frame side locking portion 32 and the back cover C2 are arranged at different heights, the back cover C2 having a shape extending in the vertical direction can be reliably coupled to the seat back frame F3. Further, since the connecting member 10 is provided at the lower end of the back cover C2, the cover-side locking portion 68 can be locked to the frame-side locking portion 32 and then screwed, and the seat back frame F3 can be secured. And the back cover C2 can be easily assembled.
連結部材10によって、シートバックフレームF3及びバックカバーC2を容易に結合させることができる。連結部材10とシートバックフレームF3とが2つのフレーム結合部12U、12Dを介して接続されるため、シートバックフレームF3とバックカバーC2との結合が強固になる。
The seat back frame F3 and the back cover C2 can be easily coupled by the connecting member 10. Since the connecting member 10 and the seat back frame F3 are connected via the two frame coupling portions 12U and 12D, the coupling between the seat back frame F3 and the back cover C2 is strengthened.
以上で具体的実施形態の説明を終えるが、本発明は上記実施形態に限定されることなく幅広く変形実施することができる。図12に示されるように、脆弱部104はバックアッパフレーム3が扁平に変形された部分として形成されていてもよい。この場合も、脆弱部104は後方への荷重によって後方へ折曲がるため、乗員の頸部に加わる荷重が低減される。また、上記実施形態と同様に、バックアッパフレーム3の変形によって剛性を低下させることができるため、脆弱部104を設けることが容易である。
This is the end of the description of the specific embodiment, but the present invention is not limited to the above-described embodiment, and can be widely modified. As shown in FIG. 12, the fragile portion 104 may be formed as a portion in which the back upper frame 3 is deformed flat. Also in this case, the fragile portion 104 bends backward due to a backward load, so that the load applied to the occupant's neck is reduced. Moreover, since the rigidity can be lowered by the deformation of the back upper frame 3 as in the above embodiment, it is easy to provide the fragile portion 104.
図12のように、脆弱部104が扁平に変形された部分として形成された場合は、図6のように、脆弱部4が断面視で半円状をなすように形成された場合に比べて、脆弱部104の剛性が低下する。したがって、脆弱部104が扁平に変形された部分として形成された場合には、より低い荷重でバックアッパフレーム3を折曲がり、低い荷重であっても乗員の頸部に加わる荷重を低減することができる。このように、バックアッパフレーム3の形状によって変形が生じる荷重の閾値を調節することができる。
As shown in FIG. 12, when the fragile portion 104 is formed as a flatly deformed portion, as compared with the case where the fragile portion 4 is formed in a semicircular shape in a sectional view as shown in FIG. The rigidity of the fragile portion 104 is reduced. Therefore, when the fragile portion 104 is formed as a flatly deformed portion, the back upper frame 3 can be bent with a lower load, and the load applied to the occupant's neck can be reduced even with a lower load. it can. Thus, the threshold value of the load that causes deformation can be adjusted by the shape of the back upper frame 3.
図13に示されるように、バックアッパフレーム3に内部に貫通する所定の大きさの開口部200を形成することによって脆弱部204を形成してもよい。開口部200が形成されていることによって、第1サイドフレーム部51L,51Rが溶接される箇所間の剛性が、バックアッパフレーム3の他の部分の剛性よりも小さくなる。そのため、図13に示されるバックアッパフレーム3においても、後方への荷重が加わるとバックアッパフレーム3が後方へ折曲がるため、乗員の頸部に加わる荷重が低減される。また、開口部200を形成することによって剛性を低下させることができるため、脆弱部204を設けることが容易である。
As shown in FIG. 13, the weakened portion 204 may be formed by forming an opening portion 200 of a predetermined size penetrating inside the back upper frame 3. By forming the opening 200, the rigidity between the locations where the first side frame parts 51L and 51R are welded becomes smaller than the rigidity of the other parts of the back upper frame 3. Therefore, also in the back upper frame 3 shown in FIG. 13, when a backward load is applied, the back upper frame 3 bends backward, so that the load applied to the occupant's neck is reduced. In addition, since the rigidity can be reduced by forming the opening 200, it is easy to provide the fragile portion 204.
また、開口部200は、図13に示されるように、バックアッパフレーム3の左右方向の略中央の位置において、上下方向に延在するように形成されるとよい。この構成によれば、乗員の頸部に荷重が加わると、バックアッパフレーム3は左右方向の略中央の位置において後方に折曲がる。よって、乗員の頸部に加わる荷重が効果的にバックアッパフレーム3の変形によって吸収され、乗員の頸部に加わる荷重が低減され易くなる。
Further, as shown in FIG. 13, the opening 200 may be formed to extend in the vertical direction at a substantially central position in the left-right direction of the back upper frame 3. According to this configuration, when a load is applied to the occupant's neck, the back upper frame 3 bends backward at a substantially central position in the left-right direction. Therefore, the load applied to the occupant's neck is effectively absorbed by the deformation of the back upper frame 3, and the load applied to the occupant's neck is easily reduced.
脚片部16を荷重が加えられたときに変形しやすい脆弱部とするため、脚片部16の左右方向の幅をフレーム結合部12及びカバー結合部14よりも小さくなるように設定されていたが、脚片部16の剛性がバックカバーC2よりも低くなるような構成であればいかなる構成であってもよい。例えば、脚片部16の前後方向の幅(厚み)を小さくすることによって、脚片部16の剛性をバックカバーC2よりも低くなるようにしてもよい。脚片部16の一部にのみ左右方向の幅の小さい部分を設け、脚片部16の剛性を低下させてもよい。
In order to make the leg piece 16 a fragile part that is easily deformed when a load is applied, the width in the left-right direction of the leg piece 16 is set to be smaller than the frame coupling part 12 and the cover coupling part 14. However, any configuration may be used as long as the rigidity of the leg piece portion 16 is lower than that of the back cover C2. For example, the leg piece 16 may have a lower rigidity than the back cover C2 by reducing the width (thickness) of the leg piece 16 in the front-rear direction. Only a part of the leg piece 16 may be provided with a portion having a small width in the left-right direction to reduce the rigidity of the leg piece 16.
例えば、図14(A)に示されるように、上側の脚片部16Uの左右方向の幅のみをカバー結合部14の幅、及びフレーム結合部12U、12Dの幅よりも小さくするように構成してもよい。このように構成することによっても、連結部材10は上述の荷重が加わった際に変形する脆弱部として機能し、バックカバーC2が変形しにくくなる。また、フレーム結合部12をカバー結合部14に対して上下及び左(又は右)に配置し、それぞれのフレーム結合部12が脚片部16を介してカバー結合部14に結合されていてもよい。このとき、上下方向に延在する脚片部16の左右方向の幅はフレーム結合部12、及びカバー結合部14の幅よりも小さく設定され、左右方向に延在する脚片部16の上下方向の幅は、フレーム結合部12、及びカバー結合部14の幅よりも小さく設定されるとよい。
For example, as shown in FIG. 14A, only the width in the left-right direction of the upper leg piece 16U is configured to be smaller than the width of the cover coupling portion 14 and the width of the frame coupling portions 12U and 12D. May be. Also with this configuration, the connecting member 10 functions as a fragile portion that deforms when the above-described load is applied, and the back cover C2 is less likely to be deformed. Further, the frame coupling portion 12 may be arranged on the top and bottom and the left (or right) with respect to the cover coupling portion 14, and each frame coupling portion 12 may be coupled to the cover coupling portion 14 via the leg piece portion 16. . At this time, the width in the left-right direction of the leg piece portion 16 extending in the vertical direction is set to be smaller than the width of the frame coupling portion 12 and the cover coupling portion 14, and the vertical direction of the leg piece portion 16 extending in the left-right direction. Is preferably set to be smaller than the width of the frame coupling portion 12 and the cover coupling portion 14.
図14(B)に示されるように、図8に示される連結部材10を90度回転し、カバー結合部14及びフレーム結合部12が左右方向に並ぶように配置されて、バックサイドフレーム1L、1Rに取り付けられていても良い。このとき、脚片部16は、左側のフレーム結合部12の右縁及びカバー結合部14の左縁と、右側のフレーム結合部12の左縁及びカバー結合部14の右縁とを接続している。脚片部16の上下方向の幅は、フレーム結合部12、及びカバー結合部14の幅よりも小さく設定されるとよい。この場合でも、前方に向かう荷重がカバー結合部14に加わると脚片部16が変形し、バックカバーC2に加わる荷重が低減されるため、バックカバーC2が変形しにくくなる。
As shown in FIG. 14B, the connecting member 10 shown in FIG. 8 is rotated by 90 degrees, and the cover coupling portion 14 and the frame coupling portion 12 are arranged so as to be aligned in the left-right direction. It may be attached to 1R. At this time, the leg piece 16 connects the right edge of the left frame coupling portion 12 and the left edge of the cover coupling portion 14 to the left edge of the right frame coupling portion 12 and the right edge of the cover coupling portion 14. Yes. The vertical width of the leg piece 16 may be set smaller than the width of the frame coupling part 12 and the cover coupling part 14. Even in this case, when a load toward the front is applied to the cover coupling portion 14, the leg piece portion 16 is deformed and the load applied to the back cover C2 is reduced, so that the back cover C2 is hardly deformed.
また、上記実施形態と同様に、カバー結合部14がフレーム結合部12の後方に位置しているため、シートバックフレームF3とバックカバーC2との間隙を確実に設けることができ、連結部材10の変形に要する空間が確保される。また、上記実施形態と同様に、連結部材10とシートバックフレームF3とが2ヶ所で接続されるため、シートバックフレームF3とバックカバーC2との結合が強固になる。
Further, similarly to the above embodiment, since the cover coupling portion 14 is located behind the frame coupling portion 12, a gap between the seat back frame F3 and the back cover C2 can be reliably provided, and the connecting member 10 Space required for deformation is secured. Moreover, since the connection member 10 and the seat back frame F3 are connected at two places as in the above-described embodiment, the coupling between the seat back frame F3 and the back cover C2 becomes strong.
図14(C)に示されるように、バックサイドフレーム1L、1Rにそれぞれ、前後に貫通する貫通孔108を設けることによって、バックカバーC2とバックサイドフレーム1L、1Rとを接続する連結構造110を構成してもよい。図14(C)に示される連結構造110には、バックサイドフレーム1L、1Rの後壁に左右対称に形成され、略コの字状をなし相対する1対の貫通孔108と、その1対の貫通孔108によって画定された略方形をなすカバー結合部112と、カバー結合部112の上下端部とバックサイドフレーム1L、1Rの本体となるフレーム本体114とをそれぞれ、上下に接続する1対の脚片部116とを含む。カバー結合部112の左右及び上下方向の概ね中央の位置に前後に貫通する螺子孔118が設けられている。バックカバーC2は下部に設けられた貫通孔62を介してカバー結合部112に螺子止めされ、バックサイドフレーム1L、1Rに固定される。
As shown in FIG. 14C, a connecting structure 110 that connects the back cover C2 and the back side frames 1L, 1R is provided by providing through holes 108 that pass through the back side frames 1L, 1R in the front-rear direction. It may be configured. The connection structure 110 shown in FIG. 14 (C) has a pair of through-holes 108 that are symmetrically formed on the rear walls of the back side frames 1L and 1R and that are substantially U-shaped and face each other. A pair of cover coupling portions 112 having a substantially square shape defined by the through-holes 108, and upper and lower ends of the cover coupling portion 112 and a frame main body 114 serving as a main body of the back side frames 1L and 1R, respectively. Leg piece 116. A screw hole 118 penetrating in the front-rear direction is provided at a substantially central position in the left-right and vertical directions of the cover coupling portion 112. The back cover C2 is screwed to the cover coupling portion 112 through a through-hole 62 provided in the lower portion, and is fixed to the back side frames 1L and 1R.
図14(C)に示される連結構造110において、カバー結合部112は1対の貫通孔108によって取り囲まれると共に、上下それぞれに設けられた脚片部116を介してバックサイドフレーム1L、1Rのフレーム本体114に接続されている。そのため、カバー結合部112に前方への荷重が加わると脚片部116が変形し、バックカバーC2に加わる荷重が低減されるため、バックカバーC2が変形しにくくなるという効果が得られる。また、連結構造110では、連結部材10を別途設けることなく、バックカバーに加わる荷重を低減することができる脚片部116を設けることができるという利点がある。
In the connection structure 110 shown in FIG. 14C, the cover coupling portion 112 is surrounded by a pair of through-holes 108, and the back side frames 1L and 1R are framed via leg pieces 116 provided on the upper and lower sides, respectively. It is connected to the main body 114. Therefore, when a forward load is applied to the cover coupling portion 112, the leg piece portion 116 is deformed, and the load applied to the back cover C2 is reduced, so that the effect that the back cover C2 becomes difficult to deform is obtained. Further, the connection structure 110 has an advantage that the leg piece portion 116 that can reduce the load applied to the back cover can be provided without providing the connection member 10 separately.
S2 :シートバック
S4 :ヘッドレスト部
1L、1R:バックサイドフレーム
3 :バックアッパフレーム(アッパフレーム)
4 :脆弱部
4L :左端部
4R :右端部
7 :ヘッドレストフレーム
56L :左側接続部
56R :右側接続部
104 :脆弱部
204 :脆弱部 S2: Seat back S4: Headrest portion 1L, 1R: Back side frame 3: Back upper frame (upper frame)
4:weak part 4L: left end part 4R: right end part 7: headrest frame 56L: left side connection part 56R: right side connection part 104: weak part 204: weak part
S4 :ヘッドレスト部
1L、1R:バックサイドフレーム
3 :バックアッパフレーム(アッパフレーム)
4 :脆弱部
4L :左端部
4R :右端部
7 :ヘッドレストフレーム
56L :左側接続部
56R :右側接続部
104 :脆弱部
204 :脆弱部 S2: Seat back S4:
4:
Claims (11)
- 上下方向に延在する左右一対のサイドフレーム、及び、両サイドフレームの上部を接続するアッパフレームを含むシートバックフレームと、
前記アッパフレームに結合されたヘッドレストフレームとを有し、
前記アッパフレームの少なくとも一部に、前記アッパフレームの他の部分に比べ剛性の小さい脆弱部が設けられていることを特徴とする乗物用シート。 A pair of left and right side frames extending in the vertical direction, and a seat back frame including an upper frame connecting the upper portions of both side frames;
A headrest frame coupled to the upper frame;
The vehicle seat according to claim 1, wherein at least a part of the upper frame is provided with a weak part having a lower rigidity than the other part of the upper frame. - 前記ヘッドレストフレームは、前記脆弱部のうち最も左側に位置する左端部と最も右側に位置する右端部との間において、前記アッパフレームに接続していることを特徴とする請求項1に記載の乗物用シート。 2. The vehicle according to claim 1, wherein the headrest frame is connected to the upper frame between a left end portion located on a leftmost side and a right end portion located on a rightmost side among the weakened portions. Sheet.
- 前記ヘッドレストフレームは前記アッパフレームに設けられた少なくとも2つ以上の接続部において接続し、
前記接続部のうち最も左側に位置する左側接続部及び前記左端部が前記脆弱部によって接続され、
前記接続部のうち最も右側に位置する右側接続部及び前記右端部が前記脆弱部によって接続されていることを特徴とする請求項2に記載の乗物用シート。 The headrest frame is connected at at least two or more connecting portions provided on the upper frame,
The left side connection part located on the leftmost side of the connection part and the left end part are connected by the fragile part,
The vehicle seat according to claim 2, wherein the right-side connection portion located on the rightmost side of the connection portion and the right end portion are connected by the fragile portion. - 前記アッパフレームの前記左側接続部と前記右側接続部との間が前記脆弱部によって接続されていることを特徴とする請求項3に記載の乗物用シート。 The vehicle seat according to claim 3, wherein the left connecting portion and the right connecting portion of the upper frame are connected by the fragile portion.
- 前記ヘッドレストフレームは前記アッパフレームに固定されていることを特徴とする請求項4に記載の乗物用シート。 The vehicle seat according to claim 4, wherein the headrest frame is fixed to the upper frame.
- 前記アッパフレームはパイプ状部材によって形成され、前記脆弱部の断面は半円形をなすことを特徴とする請求項2~請求項5のいずれか1つの項に記載の乗物用シート。 The vehicle seat according to any one of claims 2 to 5, wherein the upper frame is formed by a pipe-shaped member, and the cross-section of the fragile portion has a semicircular shape.
- 前記脆弱部の前壁が断面視で半円弧状に形成され、後壁が断面視で板状に形成され、前記脆弱部の前面に前記ヘッドレストフレームが結合していることを特徴とする請求項6に記載の乗物用シート。 The front wall of the fragile portion is formed in a semicircular arc shape in a cross-sectional view, the rear wall is formed in a plate shape in a cross-sectional view, and the headrest frame is coupled to the front surface of the fragile portion. 6. The vehicle seat according to 6.
- 前記アッパフレームはパイプ状部材によって形成され、前記脆弱部の断面は扁平をなすことを特徴とする請求項2~請求項5のいずれか1つの項に記載の乗物用シート。 The vehicle seat according to any one of claims 2 to 5, wherein the upper frame is formed of a pipe-like member, and a cross section of the fragile portion is flattened.
- 前記アッパフレームはパイプ状部材によって形成され、前記脆弱部の側面には内部に向けて貫通する開口部が形成されていることを特徴とする請求項2~請求項5のいずれか1つの項に記載の乗物用シート。 The upper frame is formed by a pipe-shaped member, and an opening that penetrates toward the inside is formed on a side surface of the fragile portion. The vehicle seat described.
- 前記開口部が前記アッパフレームの左右方向の略中央の位置において、上下方向に延在していることを特徴とする請求項9に記載の乗物用シート。 The vehicle seat according to claim 9, wherein the opening extends in a vertical direction at a substantially central position in a horizontal direction of the upper frame.
- 前記ヘッドレストフレームは前記アッパフレームの前面に固定されていることを特徴とする請求項1~請求項10のいずれか1つの項に記載の乗物用シート。 The vehicle seat according to any one of claims 1 to 10, wherein the headrest frame is fixed to a front surface of the upper frame.
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JP2017-044412 | 2017-03-08 | ||
JP2017-044413 | 2017-03-08 | ||
JP2017044412A JP6669974B2 (en) | 2017-03-08 | 2017-03-08 | Vehicle seat |
JP2017044413A JP6773978B2 (en) | 2017-03-08 | 2017-03-08 | Vehicle seat |
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JPH0398149U (en) * | 1990-01-30 | 1991-10-11 | ||
JP2001239871A (en) * | 2000-02-29 | 2001-09-04 | Tachi S Co Ltd | Shock absorbing seat for vehicle and seat back frame structure |
JP2005334364A (en) * | 2004-05-27 | 2005-12-08 | Toyota Motor Corp | Seat |
JP2011011651A (en) * | 2009-07-02 | 2011-01-20 | Nihon Technica Co Ltd | Mounting structure of bracket |
JP2012046158A (en) * | 2010-07-30 | 2012-03-08 | Nihon Technica Co Ltd | Supporting structure of headrest bracket |
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2017
- 2017-11-30 WO PCT/JP2017/043008 patent/WO2018163539A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0398149U (en) * | 1990-01-30 | 1991-10-11 | ||
JP2001239871A (en) * | 2000-02-29 | 2001-09-04 | Tachi S Co Ltd | Shock absorbing seat for vehicle and seat back frame structure |
JP2005334364A (en) * | 2004-05-27 | 2005-12-08 | Toyota Motor Corp | Seat |
JP2011011651A (en) * | 2009-07-02 | 2011-01-20 | Nihon Technica Co Ltd | Mounting structure of bracket |
JP2012046158A (en) * | 2010-07-30 | 2012-03-08 | Nihon Technica Co Ltd | Supporting structure of headrest bracket |
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