WO2018163585A1

WO2018163585A1 - Vehicle seat

Info

Publication number: WO2018163585A1
Application number: PCT/JP2018/000128
Authority: WO
Inventors: 洋平卜部; 鈴木　淳一
Original assignee: テイ・エステック株式会社; 本田技研工業株式会社
Priority date: 2017-03-08
Filing date: 2018-01-05
Publication date: 2018-09-13
Also published as: JPWO2018163585A1; JP2023120411A

Abstract

[Problem] To provide a vehicle seat having a headrest frame which easily retains the shape of a headrest. [Solution] This vehicle seat S has a seat back frame F3 serving as a framework of a seat back S2 and a headrest frame 7 serving as a framework of a headrest S4, wherein the headrest frame has: a first frame 50 which has a pair of left and right first vertical portions 51L, 51R extending upward from an upper end of the seat back frame, and a first horizontal portion 51U extending in the left and right direction and connecting the upper ends of the first vertical portions; a second frame 52 both left and right ends of which are connected to the first vertical portions, respectively, and which has a central portion 53F protruding forward and upward with respect to both the left and right ends; and a third frame 54 both left and right ends of which are connected to the first vertical portions, respectively, and which has a central portion 55F protruding forward and upward with respect to both the left and right ends to contact a rear surface of the central portion of the second frame.

Description

Vehicle seat

The present invention relates to a vehicle seat mounted on an automobile or the like.

Some vehicle seats have a headrest frame provided with a pair of left and right vertical portions extending upward from a seat back frame serving as a frame of the seat back and a horizontal portion extending left and right and connecting the upper ends of the vertical portions. (For example, patent document 1). The headrest of Patent Document 1 is formed by connecting a pad to a headrest frame.

JP 2000-189278 A

However, since the headrest frame is formed only by the vertical portion and the horizontal portion, it is difficult to make the headrest three-dimensional, and it is difficult to retain the shape. In order to make the headrest into a three-dimensional shape that effectively supports the head of the occupant, a headrest frame that further conforms to the three-dimensional shape of the headrest is required.

In view of the above background, an object of the present invention is to provide a vehicle seat having a headrest frame that can easily retain the shape of the headrest.

In order to solve the above-mentioned problem, a vehicle seat (S) having a seat back frame (F3) as a framework of the seat back (S2) and a headrest frame (7) as a framework of the headrest (S4), The headrest frame includes a pair of left and right first vertical portions (51L, 51R) extending upward from an upper end of the seat back frame, and a first horizontal portion extending left and right to connect the upper ends of the left and right first vertical portions. The first frame (50) having (51U) and the second frame (52) whose left and right ends are connected to each of the first vertical portions and whose central portion (53F) protrudes forward and upward with respect to the left and right ends. ) And both left and right ends are connected to the first vertical portion, respectively, and a central portion (55F) projects forward and upward with respect to the left and right ends, and on the rear surface of the central portion of the second frame. Vehicle seat and a third frame (54) in contact is provided.

According to this configuration, since the frame of the headrest has a three-dimensional shape by the first frame, the second frame, and the third frame, the three-dimensional shape of the headrest can be made.

Further, in the above aspect, the center portion of the second frame and the center portion of the third frame may be combined.

According to this configuration, since the central portion of the second frame is supported from the rear by the central portion of the third frame, the rigidity of the headrest frame is increased.

In the above aspect, the left and right ends of the third frame may be coupled to the front surface of the first vertical portion.

According to this configuration, the load from the front applied to the third frame is transmitted to the first vertical portion, and the third frame is difficult to deform.

In the above aspect, the left and right ends of the second frame may be coupled to the left and right inner surfaces of the first vertical portion, respectively.

According to this configuration, since the load applied to the second frame and the load applied to the third frame are transmitted to different positions of the first vertical portion, the load is dispersed and the first vertical portion is hardly deformed.

In the above aspect, the left and right ends of the second frame may be coupled to the first vertical portion below the left and right ends of the third frame.

According to this configuration, since the coupling portion between the first frame and the second frame and the coupling portion between the first frame and the third frame are further separated, the load is more dispersed and the first vertical portion is more difficult to deform. .

In the above aspect, the second frame includes a pair of left and right second front portions (57L, 57R) extending forward from both left and right ends, and a pair of left and right extending upward from each of the front ends of the second front portion. It has a 2nd vertical part (53L, 53R), and the center part of the 2nd frame is good to extend in the right and left, and is connected to each of the upper end of the 2nd vertical part.

According to this configuration, since the front face is formed by the second vertical portion, the occupant's head can be supported from the rear.

In the above aspect, the second front portion may extend forward and inward, and the distance between the left and right second vertical portions may be smaller than the distance between the left and right first vertical portions.

According to this configuration, the head of the occupant can be supported from behind by the second frame while maintaining the rigidity of the first frame.

In the above aspect, the third frame has a pair of left and right third front portions (55L, 55R) extending upward and forward from both left and right ends, and a central portion of the third frame extends to the left and right. The horizontal width of the central portion of the second frame is preferably smaller than the horizontal width of the central portion of the third frame.

According to this configuration, since the upper frame of the headrest is formed by the center portion of the third frame, the upper edge of the pad can be supported in a wide range.

In the above aspect, the angle of the third front portion with respect to the horizontal line may be larger than the angle of the second front portion with respect to the horizontal line.

According to this configuration, the head of the occupant can be protected by the deformation of the headrest.

According to one aspect of the present invention, it is possible to provide a vehicle seat having a headrest frame in which the headrest can be easily shaped.

Also, in one aspect of the present invention, by combining the center portion of the second frame and the center portion of the third frame, the center portion of the second frame is supported from behind by the center portion of the third frame. The rigidity of the headrest frame is increased.

In one aspect of the present invention, the left and right ends of the third frame are coupled to the front surface of the first vertical portion, so that the load applied from the front applied to the third frame is transmitted to the first vertical portion, and the third frame is deformed. It becomes difficult to do.

In one aspect of the present invention, the left and right ends of the second frame are coupled to the left and right inner surfaces of the first vertical portion, respectively, so that the load from the front applied to the third frame is transmitted to the first vertical portion, and the third frame Becomes difficult to deform.

In one aspect of the present invention, the left and right ends of the second frame are coupled to the left and right inner surfaces of the first vertical portion, respectively, so that the load applied to the second frame and the load applied to the third frame are Since it is transmitted to different positions, the load is dispersed and the first vertical portion is difficult to deform.

Further, in one aspect of the present invention, the left and right ends of the second frame are coupled to the first vertical portion below the left and right ends of the third frame, so that the coupling portion of the first frame and the second frame, Since the connecting portion between the frame and the third frame is further separated, the load is more dispersed and the first vertical portion is more difficult to deform.

In one aspect of the present invention, since the second frame has a second front portion and a second vertical portion, a surface facing forward is formed by the second vertical portion, and the head of the occupant is viewed from the rear. Can be supported.

In one aspect of the present invention, since the distance between the left and right second vertical portions is smaller than the distance between the left and right first vertical portions, the rigidity of the first frame is maintained, and the head of the occupant is held by the second frame. It can be supported from behind.

In one embodiment of the present invention, the horizontal width of the central portion of the second frame is smaller than the horizontal width of the central portion of the third frame, so that the upper frame of the headrest is the central portion of the third frame. The upper edge of the pad formed by can be supported in a wide range.

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.

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.

As shown in FIG. 1, the vehicle seat S is a seat mounted on a vehicle such as an automobile, and includes a seat cushion S1, and a seat back S2 in which a backrest S3 and a headrest portion S4 are integrally formed. Bucket seat. 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.

As shown in FIG. 2, the seat back S2 includes a seat back frame F3, a pad unit 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.

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.

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.

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.

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.

As shown in FIGS. 4, 5, and 7, the headrest frame 7 includes a first headrest frame 50, and a second headrest frame 52 and a third headrest frame 54 that are coupled to the top of the first headrest frame 50. Have. The first headrest frame 50 connects the upper ends of a pair of left and right first

vertical portions

51L and 51R extending upward from the back upper frame 3 and the first

horizontal portions

51L and 51R and extends to the left and right. The pipe member has 51U and is bent in a substantially inverted U shape facing downward in a front view. The lower left ends and the lower right ends of the first

vertical 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 vertical portions 51L, R 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.

The second headrest frame 52 is coupled to the left and right first

vertical portions

51L and 51R at the left and right outer ends, respectively, and a pair of left and right second

front portions

57L and 57R extending forward and left and right, Second

vertical portions

53L and 53R extending upward from the front ends of the

front portions

57L and 57R, respectively, and second horizontal portions 53F extending left and right and connecting the upper ends of the second

vertical portions

53L and 53R are provided. The second

front portions

57L and 57R are welded to the left and right inwardly upper surfaces of the first

vertical portions

51L and 51R at the left and right outer ends, respectively. As shown in FIG. 7, the second horizontal portion 53F is a central portion of the second headrest frame 52 and is positioned forward and above the first horizontal portion 51U. The left and right second

vertical portions

53L and 53R and the second horizontal portion 53F form a surface 51S that faces substantially forward and supports the head of the passenger from behind.

As shown in FIG. 4, the third headrest frame 54 is coupled to the left and right first

vertical portions

51L and 51R at the left and right outer ends, respectively, and the left and right third front portions extending in the front upper direction and the left and right inwards. 55L, 55R, and a third horizontal portion 55F that extends to the left and right and connects the front ends thereof. The third

front portions

55L and 55R are the front surfaces of the first

vertical portions

51L and 51R at the rear ends, respectively, and above the welded portions of the first

vertical portions

51L and 51R and the second

front portions

57L and 57R. And extends upward and forward. Therefore, the third horizontal portion 55F is disposed at a position protruding upward and forward from the welded portions that are the left and right ends of the third headrest frame 54. The width of the third horizontal portion 55F in the left-right direction is set to be wider than the second horizontal portion 53F, and the third horizontal portion 55F is welded to the rear surface of the second horizontal portion 53F. The first headrest frame 50, the second headrest frame 52, and the third headrest frame 54 form a skeleton of the headrest portion S4.

As shown in FIG. 2, the pad unit C1 includes a pad member 36 that is a cushioning material for coupling 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.

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. 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.

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 pad unit 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 pad unit C1 and the back cover C2 are coupled to the seat back frame F3, and the seat back S2 is completed.

Next, the effect of the vehicle seat S will be described. As shown in FIG. 4, the first headrest frame 50, the second headrest frame 52, and the third headrest frame 54 form a three-dimensional shape of the framework of the headrest portion S4. Therefore, the three-dimensional shape of the headrest portion S4 can be made, and the shape of the headrest portion S4 is easily maintained.

The second horizontal portion 53F, which is the central portion of the second headrest frame 52, and the third horizontal portion 55F, which is the central portion of the third headrest frame 54, are welded. Therefore, since the second horizontal portion 53F is supported from the rear by the third horizontal portion 55F, the rigidity of the headrest frame 7 is increased.

The rear ends of the third

front portions

55L and 55R, which are the left and right ends of the third headrest frame 54, are welded to the front surfaces of the first

vertical portions

51L and 51R. Therefore, the load from the front applied to the third headrest frame 54 is transmitted to the first

vertical portions

51L and 51R, and the third headrest frame 54 is hardly deformed. Therefore, the rigidity with respect to the load from the front of the headrest frame 7 is increased.

The rear ends of the second

front portions

57L and 57R, which are the left and right ends of the second headrest frame 52, are welded to the left and right inner surfaces of the first

vertical portions

51L and 51R, respectively. Therefore, the load applied to the second headrest frame 52 and the load applied to the third headrest frame 54 are transmitted to different positions of the first

vertical portions

51L and 51R, so that the load is dispersed and the first

vertical portions

51L and 51R are deformed. It becomes difficult.

The rear ends of the second

front portions

57L and 57R are welded to the first

vertical portions

51L and 51R below the rear ends of the third

front portions

55L and 55R. Therefore, since the coupling portion of the first headrest frame 50 and the second headrest frame 52 and the coupling portion of the first headrest frame 50 and the third headrest frame 54 are further separated, the load is more dispersed, and the first

vertical portion

51L, 51R becomes more difficult to deform.

The second headrest frame 52 has second

vertical portions

53L and 53R and a second horizontal portion 53F, and a front surface 51S is formed by these. Therefore, the 2nd headrest frame 52 can support a crew member's head from back.

Also, the distance between the left and right second

vertical portions

53L and 53R is set to be smaller than the distance between the left and right first

vertical portions

51L and 51R. Therefore, while maintaining the rigidity of the first headrest frame 50, the distance between the left and right second

vertical portions

53L and 53R is adjusted in accordance with the width of the occupant's head in the left-right direction, so that the occupant's head can be effectively Can be set to support.

Since the horizontal width of the second horizontal portion 53F is smaller than the horizontal width of the third horizontal portion 55F, the upper frame of the headrest portion S4 is formed by the third horizontal portion 55F. Therefore, the upper edge of the pad member 36 covering the headrest frame 7 is supported in a wide range by the third lateral portion 55F, and the shape of the headrest portion S4 is easily maintained.

7, the angle of the third front portion 55R (55L) with respect to the horizontal line is larger than the angle of the second front portion 57R (57L) with respect to the horizontal line. Therefore, for example, when a large load of a predetermined value or more is applied to the headrest S4 from the front during a collision from the rear of the vehicle, the upper portion of the headrest S4 is deformed upward and rearward. Since the load applied to the occupant's head is absorbed by the deformation of the headrest S4, the occupant's head can be more effectively protected.

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. In the present embodiment, the surface 51S that supports the head of the occupant is formed by the second

vertical portions

53L and 53R and the second horizontal portion 53F. A plate-like member along 51S may be provided.

In the present embodiment, the present invention is applied to the bucket seat, but the headrest and the seat back can also be applied to a separate seat. Further, the present invention is not limited to a seat mounted on an automobile, and can be applied to a vehicle seat such as a railway vehicle, an aircraft, and a ship.

50: First headrest frame (first frame)
51L: 1st vertical part 51R: 1st vertical part 51U: 1st horizontal part (center part)
52: Second headrest frame (second frame)
53F: 2nd horizontal part (central part)
53L: second vertical portion 53R: second vertical portion 54: third headrest frame (third frame)
55F: 3rd horizontal part 55L: 3rd front part 55R: 3rd front part 57L: 2nd front part 57R: 2nd front part F3: Seat back frame S: Vehicle seat S2: Seat back S4: Headrest part (headrest )

Claims

A seat for a vehicle having a seat back frame as a frame of the seat back and a headrest frame as a frame of the headrest,
The headrest frame is
A first frame having a pair of left and right first vertical portions extending upward from the upper end of the seat back frame, and a first horizontal portion extending left and right to connect the upper ends of the left and right first vertical portions;
A second frame having left and right ends connected to each of the first vertical portions, and a center portion protruding forward and upward with respect to the left and right ends;
The left and right ends are connected to each of the first vertical portions, and the center portion has a third frame that protrudes forward and upward with respect to the left and right ends and abuts against the rear surface of the center portion of the second frame. A vehicle seat.
The vehicle seat according to claim 1, wherein a central portion of the second frame and a central portion of the third frame are coupled.
3. The vehicle seat according to claim 1, wherein left and right ends of the third frame are respectively coupled to a front surface of the first vertical portion.
The vehicle seat according to any one of claims 1 to 3, wherein left and right ends of the second frame are respectively coupled to left and right inner surfaces of the first vertical portion.
The vehicle seat according to claim 4, wherein both left and right ends of the second frame are coupled to the first vertical portion below the left and right ends of the third frame.
The second frame has a pair of left and right second front portions extending forward from both left and right ends, and a pair of left and right second vertical portions extending upward from each of the front ends of the second front portion,
The vehicle according to any one of claims 1 to 5, wherein a center portion of the second frame extends to the left and right and is connected to each of upper ends of the second vertical portions. Sheet.
The second front portion extends forward and inward;
The vehicle seat according to claim 6, wherein a distance between the left and right second vertical portions is smaller than a distance between the left and right first vertical portions.
The third frame has a pair of left and right third front portions extending upward and forward from both left and right ends,
The center portion of the third frame extends to the left and right and is connected to each of the upper ends of the third front portion,
The vehicle seat according to claim 7, wherein a width in the left-right direction of the center portion of the second frame is smaller than a width in the left-right direction of the center portion of the third frame.
The vehicle seat according to claim 8, wherein an angle of the third front part with respect to a horizontal line is larger than an angle of the second front part with respect to a horizontal line.