JP2014129006A - Seat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the attachment rigidity of an armrest bracket.SOLUTION: A seat device comprises: a seat back frame 2 having left and right back side frames 7, 8; and an armrest bracket 10 which is fixed to at least one of the left and right back side frames 7, 8 for supporting an armrest. Each of the back side frames 7, 8, to which the armrest bracket 10 is fixed, is divided into two parts, i.e. an upper side frame 71, 81 and a lower side frame 72, 82 in a vertical direction. A lower end part of the upper side frame 71 and an upper end part of the lower side frame 72 are integrated so as to overlap with each other. The armrest bracket 10 is fixed to an overlapping area between the upper side frame 71 and the lower side frame 72.

Description

  The present invention relates to a seat device, and more particularly to a seat device mounted on a vehicle.

  Conventionally, in a seat device such as a vehicle, one in which an armrest is attached to one side portion of a seat back frame is known (for example, see Patent Document 1). The armrest is attached to one side portion of the seat back frame so as to be rotatable via an armrest bracket (contact member 45).

JP 2006-61426 A

Here, improvement of the strength of each part of the seat device is a constantly demanded problem, and the demand is particularly great also in the armrest bracket.
Then, the subject of this invention is improving the attachment rigidity of an armrest bracket.

In order to solve the above problems, a seat device according to the invention of claim 1
A seat back frame having left and right back side frames;
An armrest bracket fixed to at least one of the left and right backside frames to support the armrest; and
The back side frame to which the armrest bracket is fixed is divided into an upper side frame and a lower side frame in the vertical direction,
The lower end of the upper side frame and the upper end of the lower side frame are integrated so as to overlap,
The armrest bracket is fixed to an overlapping region of the upper side frame and the lower side frame.

The invention according to claim 2 is the seat apparatus according to claim 1,
The lower side frame is disposed so as to overlap the outer side of the upper side frame,
The armrest bracket is fixed to the lower side frame in the overlapping region.

The invention according to claim 3 is the seat device according to claim 1 or 2,
The armrest bracket rotatably supports the armrest, and the armrest bracket is fixed to the overlap region so that a rotation axis of the armrest projects forward from the overlap region. .

The invention according to claim 4 is the seat device according to any one of claims 1 to 3,
It further includes a side frame connecting member that spans from the vicinity of the overlapping region to the other back side frame.

  According to the first aspect of the present invention, the back side frame is divided in the vertical direction, and the armrest bracket is fixed to the overlapping region of the upper side frame and the lower side frame, so the armrest bracket is supported by the overlapping region. Will be. Since the two plate members overlap each other in the overlapping region, the armrest bracket can be supported more firmly than the case where it is supported by one plate member, and the mounting rigidity of the armrest bracket can be increased.

  According to the invention described in claim 2, since the armrest bracket is fixed to the lower side frame in the overlapping region, the load received by the armrest bracket can be supported by the lower side frame that is more stable than the upper side frame. Therefore, the stability of the armrest and armrest bracket can be enhanced.

  According to the invention described in claim 3, the armrest bracket is fixed to the overlapping region so that the rotation axis of the armrest projects forward from the overlapping region. As described above, the overlapping region has high rigidity because the two plate materials overlap each other. In addition, since the armrest bracket is fixed to the overlapping area so that the rotation axis of the armrest protrudes forward from the overlapping area, it is possible to secure the length in use while suppressing the total length of the armrest itself.

  According to the invention of claim 4, since the side frame connecting member is stretched from the vicinity of the overlapping region to the other back side frame, the overlapping region vicinity is reinforced by the side frame connecting member, The mounting rigidity of the armrest bracket can be further increased.

It is a perspective view which shows the principal part structure of the sheet | seat apparatus which concerns on this embodiment. It is a front view which shows schematic structure of the seat back frame and movable frame which concern on this embodiment. It is the perspective view which looked at schematic structure of the seat back frame of FIG. 2, and the movable frame from diagonally right forward. FIG. 3 is a perspective view of a schematic configuration of the seat back frame and the movable frame in FIG. It is a perspective view which expands and shows the overlapping area | region of the upper side frame and lower side frame in the left back side frame which concerns on this embodiment. FIG. 6 is a side view of the overlapping region in FIG. 5. It is a rear view which shows schematic structure of the belt guide bracket which concerns on this embodiment. FIG. 8 is a bottom view of the belt guide bracket of FIG. 7. It is a perspective view which shows schematic structure of the upper frame which concerns on this embodiment. It is a perspective view which shows the connection state of the upper frame and belt guide bracket which concern on this embodiment. It is a perspective view which shows the connection state of the upper frame and belt guide bracket which concern on this embodiment. It is a perspective view which shows the connection state of the upper frame and belt guide bracket which concern on this embodiment. It is a perspective view which shows schematic structure of the movable frame which concerns on this embodiment. It is a perspective view which shows schematic structure of the right side attachment frame which concerns on this embodiment. It is the upper surface view which looked at schematic structure of the seat back frame and movable frame concerning this embodiment from the top. FIG. 5 is an enlarged perspective view showing a partial positional relationship between a seat back frame and a movable frame according to the present embodiment and a seat pad.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a perspective view showing a main part configuration of a sheet apparatus according to the present embodiment. As shown in FIG. 1, the seat device 1 includes a seat back frame 2, a movable frame 3 that is disposed inside the seat back frame 2 and is tiltable in the front-rear direction with respect to the seat back frame 2, and a seat back A pair of left and right cushion side frames 4 disposed on the left and right of the lower part of the frame 2, a reclining mechanism 5 for tilting the seat back frame 2 relative to the cushion side frame 4, and a pair of left and right cushion side frames 4. And a seat frame 6 that supports a cushion pad (not shown).

2 is a front view showing a schematic configuration of the seat back frame 2 and the movable frame 3. FIG. 3 is a perspective view of the schematic configuration of the seat back frame 2 and the movable frame 3 as viewed obliquely from the right front. FIG. 2 is a perspective view of the schematic configuration of the movable frame 3 as viewed from the left front side.
As shown in FIGS. 2 to 4, the seat back frame 2 is provided with left and right back side frames 7 and 8 and an upper frame 9 connecting the upper portions of the left and right back side frames 7 and 8.

The left back side frame 7 is divided into an upper side frame 71 and a lower side frame 72 in the vertical direction.
The lower side frame 72 has a lower end portion rotatably connected to a rear end portion of the left cushion side frame 4. The lower side frame 72 is formed from a single metal plate, and ribs 721 and 722 extending inwardly extend along the vertical direction at the front and rear edges of the lower side frame 72. . Further, a notch 723 that protrudes downward is formed at the rear upper end of the lower side frame 72.
The upper side frame 71 is formed of a single metal plate, and only the upper end portion of the upper side frame 71 that is along the vertical direction as a whole is curved inward. At the front and rear edges of the upper side frame 71, ribs 711 and 712 extending inwardly extend in the vertical direction. The ribs 711 and 712 are continuously formed in a curved portion near the upper end portion of the upper side frame 71, and a rib 711 is provided on the upper edge portion of the upper end portion. A rib 712 is provided on the part.
The lower end portion of the upper side frame 71 is disposed between the front and rear ribs 721 and 722 at the upper end portion of the lower side frame 72. Accordingly, the lower side frame 72 is disposed so as to overlap the outer side of the upper side frame 71.

FIG. 5 is an enlarged perspective view showing the overlapping region G1 of the upper side frame 71 and the lower side frame 72 in the left back side frame 7, and FIG. 6 is a side view of the overlapping region G1.
As shown in FIGS. 5 and 6, the lower side frame 72 in the overlapping region G1 is provided with an armrest bracket 10 that supports an armrest (not shown). The armrest bracket 10 is formed in a substantially regular hexagonal shape when viewed from the side, and a rotation shaft 11 of the armrest is pivotally supported at the central portion thereof. The armrest bracket 10 is fixed to the front side portion of the overlapping region G1 so that the rotating shaft 11 protrudes forward from the overlapping region G1 by a distance H. Thereby, the armrest bracket 10 and the notch 723 of the lower side frame 72 face each other in the front-rear direction.
The armrest bracket 10 is provided with a box-shaped box portion 12 that is fixed to the lower side frame 72 and is open on the outside, and a lid portion 13 that closes an open portion of the box portion 12. The armrest bracket 10 is formed in a hollow shape by the box portion 12 and the lid portion 13, thereby increasing the rigidity.

As shown in FIGS. 2 to 4, the right back side frame 8 is divided into an upper side frame 81 and a lower side frame 82 in the vertical direction.
The lower side frame 82 is rotatably connected at its lower end to the rear end of the right cushion side frame 4. The lower side frame 82 is formed of a single metal plate, and ribs 821 and 822 extending inwardly extend along the vertical direction at the front and rear edges of the lower side frame 82. .
The upper side frame 81 is formed of two metal plates, an inner frame 83 and an outer frame 84. The inner frame 83 extends in the vertical direction, and ribs 831 and 832 extending outward are provided on the front and rear edges of the inner frame 83 in the vertical direction. The outer frame 84 extends in the vertical direction so as to face the inner frame 83, and ribs 841 and 842 extending inwardly are provided on the front and rear edges of the outer frame 84 in the vertical direction. .
The outer frame 84 is assembled to the inner frame 83 so that the ribs 841 and 842 fit within the ribs 831 and 832 of the inner frame 83. Thus, the right upper side frame 81 is formed in a hollow shape.

The lower end portion of the upper side frame 81 is disposed between the front and rear ribs 821 and 822 at the upper end portion of the lower side frame 82. Accordingly, the lower side frame 82 is disposed so as to overlap the outside of the upper side frame 81. The overlapping region G2 between the upper side frame 81 and the lower side frame 82 in the right back side frame 8 is disposed at a position facing the overlapping region G1 in the left back side frame 7.
A pipe-shaped side frame connecting member 14 extending from side to side is bridged between the notch 723 in the vicinity of the left overlapping region G1 and the right overlapping region G2.

  The armrest bracket 10 is fixed to the right overlapping region G2 similarly to the left overlapping region G1. Since the right armrest bracket 10 has basically the same configuration as the left armrest bracket 10, the same reference numerals are given and description thereof is omitted.

  A belt guide bracket 20 to which a belt guide of a seat belt (not shown) is fixed is attached to the upper end portion of the right back side frame 8. The belt guide bracket 20 will be described later.

FIG. 7 is a rear view showing a schematic configuration of the belt guide bracket 20, and FIG. 8 is a bottom view of the belt guide bracket 20. As shown in FIGS. 7 and 8, the belt guide bracket 20 includes a first bracket member 21 that is engaged with the upper end portion of the right back side frame 8 so as to cover the rear, and the right back side frame 8. And a second bracket member 22 that is engaged with the upper end portion so as to cover the front.
The first bracket member 21 is formed such that the upper part is wider in the left-right direction than the lower part. The upper end of the first bracket member 21 is in contact with the top plate portion 221 of the second bracket member 22 from the inside. The first bracket member 21 includes left and right first wall portions 211 and 212 that sandwich an upper end portion of the right back side frame 8 from the left and right directions (see FIGS. 10 to 12).

  The upper part of the second bracket member 22 is formed wider in the left-right direction than the lower part. The second bracket member 22 includes a top plate portion 221 to which a belt guide (not shown) is fixed, a front surface portion 222 extending downward from the front end portion of the top plate portion 221, and rearward from left and right edges of the front surface portion 222. The left and right second wall portions 223 and 224 that extend and sandwich the first wall portions 211 and 212 of the first bracket member 21 in the left-right direction are provided.

FIG. 9 is a perspective view showing a schematic configuration of the upper frame 9.
The upper frame 9 is curved so as to protrude rearward as a whole, and is formed by two front and rear plate members including a front plate member 91 and a rear plate member 92. Ribs 911 and 912 extending in the rearward direction extend in the left-right direction at the upper and lower edges of the front plate member 91, respectively. On the other hand, ribs 921 and 922 extending forward are respectively extended in the left-right direction at the upper and lower edges of the rear plate member 92. The front plate member 91 and the rear plate member 92 are assembled so that the ribs 911 and 912 of the front plate member 91 are accommodated in the ribs 921 and 922 of the rear plate member 92. Thereby, the front side plate member 91 and the rear side plate member 92 are hollow.
The front plate member 91 is set to a length that projects to the left side of the rear plate member 92 after assembly.

10 to 12 are perspective views showing a connection state between the upper frame 9 and the belt guide bracket 20. 10 to 12, the second bracket member 22 of the belt guide bracket 20 is omitted. As shown in FIGS. 10 to 12, the right end of the upper frame 9 is directly connected to the belt guide bracket 20. More specifically, the front plate member 91 of the upper frame 9 has a shape that gradually increases in width toward one end on the right side. One end of the front plate member 91 is connected to the first wall 211 on the left side of the first bracket member 21 by welding. The connection position of the first wall portion 211 and the front side plate member 91 is disposed behind the step between the first wall portion 211 and the second wall portion 223 (see an ellipse S in FIG. 8). The lower end of the one end portion of the front side plate member 91 is located below the lower end of the first bracket member 21.
The rear plate member 92 of the upper frame 9 also has a shape that gradually increases in width toward one end on the right side. One end of the rear plate member 92 is connected to the rear surface of the first bracket member 21 by welding. The lower end of the one end portion of the rear plate member 92 is positioned below the lower end of the first bracket member 21.
Cutouts 913 and 923 for accommodating the belt guide bracket 20 are formed at positions where the front side plate member 91 and the rear side plate member 92 are connected to the belt guide bracket 20.

  Next, the connection state of the upper frame 9 with the left back side frame 7 will be described. As shown in FIG. 9, the other end of the rear plate member 92 is connected to the upper end of the left back side frame 7. Here, as described above, since the front plate member 91 is set to have a length that protrudes to the left side of the rear plate member 92 after assembly, the other end portion of the front plate member 91 is formed on the left side frame 7 on the left side. It is accommodated between the ribs 711 and 712 at the upper end. Thereby, the other end part of the front side plate member 91 will be connected so that it may overlap from the front over a wide range rather than the connection area | region of the back side plate member 92 and the back side frame 7 of the left side.

Next, the movable frame 3 will be described in detail. FIG. 13 is a perspective view showing a schematic configuration of the movable frame 3.
As shown in FIG. 13, the movable frame 3 includes left and right side frames 31 and 32 made of a plate-like member, and a connecting member 33 made of a plate-like member and connecting upper ends of the left and right side frames 31 and 32. And left and right attachment frames 34, 35 fixed to the lower ends of the left and right side frames 31, 32, rotatably attached to the left and right back side frames 7, 8, and made of plate-like members, Is provided.

FIG. 14 is a perspective view showing a schematic configuration of the right mounting frame 35. The left mounting frame 34 has basically the same configuration as that of the right mounting frame 35, and therefore, the same portions are denoted by the same reference numerals and description thereof is omitted.
As shown in FIG. 14, the attachment frame 35 has a lower end 351 as a connecting portion rotatably connected to the back side frame 8, an upper end 352 as a fixing portion to which the side frame 32 is fixed, A central portion 353 that connects the lower end portion 351 and the upper end portion 352 is provided. The width is gradually increased from the upper end 352 to the lower end 351. Further, the central portion 353 is bent so that the upper end portion 352 is disposed on the inner side than the lower end portion 351. Further, ribs 354 and 355 extending outward are extended in the vertical direction at the front and rear edges of the central portion 353.
In addition, a pair of through holes 356 and 357 for fixing the side frame 32 are provided in the upper end portion 352 of the mounting frame 35 at a predetermined interval.
As shown in FIG. 3, an urging mechanism 80 that applies a predetermined urging force to the movable frame 3 is connected to the lower end portion 351 of the left mounting frame 34.

As shown in FIGS. 3 and 13, each of the left and right side frames 31 and 32 is formed of a single metal plate, and only the upper end portion of the one along the vertical direction as a whole is curved inward. doing. Ribs 311 and 312 extending inwardly extend in the vertical direction at the front and rear edges of the left and right side frames 31 and 32. The ribs 311 and 312 are continuously formed in curved portions near the upper end portions of the side frames 31 and 32, and a rib 311 is provided at the upper edge portion of the upper end portions. Ribs 312 are provided at the edges. For this reason, the upper end portions of the side frames 31 and 32 have a U-shaped cross section that opens toward the front.
Since the ribs 311, 312 of the left and right side frames 31, 32 and the ribs 354, 355 of the mounting frames 34, 35 extend in opposite directions, the ribs 311, 312, 354, 355 are on the surface where they are assembled. Does not exist. For this reason, it is possible to easily assemble both the left and right side frames 31 and 32 and the attachment frames 34 and 35, and to increase the rigidity of each.

A pair of through holes 313 and 314 are formed at the lower ends of the left and right side frames 31 and 32 so as to face the pair of through holes 356 and 357 of the attachment frames 34 and 35, respectively. The side frames 31 and 32 and the mounting frames 34 and 35 are fixed by communicating the bolts 85 with the through holes 356, 357, 313, and 314 and fastening them with the nuts 86.
A plurality of reinforcing pipes 88 are provided between the left and right side frames 31 and 32 between and above the through holes 313 and 314.

The connecting member 33 is formed by a single plate-like member, the center portion 331 is convex forward, and both end portions 332 and 333 are ribs of the left and right side frames 31 and 32, respectively. 311 and 312. In addition, headrest support portions 334 and 335 to which a headrest (not shown) is assembled are attached to both ends of the connecting member 33.
Further, both end portions 332 and 333 of the connecting member 33 have a shape that is curved downward toward the tip in accordance with the shape of the upper end portions of the left and right side frames 31 and 32.
Because of such a shape, the left and right side frames 31 and 32 and the connecting member 33 have a curved shape that protrudes rearward as a whole when viewed from above.
FIG. 15 is a top view of the schematic configurations of the seat back frame 2 and the movable frame 3 as seen from above. As shown in FIG. 15, the movable frame 3 has a curved shape that protrudes rearward along the curved shape that protrudes rearward of the seat back frame 2.

The seat pad 100 is assembled to the seat back frame 2 and the movable frame 3.
FIG. 16 is an enlarged perspective view showing a partial positional relationship between the seat back frame 2 and the movable frame 3 and the seat pad 100. In FIG. 16, only the right side of the positional relationship is shown, but the left side also has the same positional relationship, so the illustration of the left side is omitted.
As shown in FIG. 16, the seat pad 100 is engaged with the movable frame 3. Specifically, the seat pad 100 is provided with a notch 101 that engages with the attachment frames 34 and 35 of the movable frame 3. For this reason, in the part outside the notch 101 of the seat pad 100, it is arrange | positioned between the attachment frames 34 and 35 and the back side frames 7 and 8. FIG. Therefore, a pad support member 90 that supports a part of the seat pad 100 from below is provided on the inner side surfaces of the backside frames 7 and 8 so as to extend inward.

  As described above, according to the present embodiment, the back side frames 7 and 8 are divided in the vertical direction, and the armrest brackets are provided in the overlapping regions G1 and G2 of the upper side frames 71 and 81 and the lower side frames 72 and 82. Since 10 is fixed, the armrest bracket 10 is supported by the overlapping regions G1 and G2. Since the overlapping regions G1 and G2 are portions where two plate materials overlap each other, the armrest bracket 10 can be supported more firmly than when supported by a single plate material, and the mounting rigidity of the armrest bracket 10 is increased. be able to.

  Further, since the armrest bracket 10 is fixed to the lower side frames 72 and 82 in the overlapping regions G1 and G2, the load received by the armrest bracket 10 is reduced by the lower side frames 72 and 82 that are more stable than the upper side frames 71 and 81. Can be supported. Therefore, the stability of the armrest and the armrest bracket 10 can be enhanced.

  Further, the armrest bracket 10 is fixed to the overlapping regions G1 and G2 so that the rotation shaft 11 of the armrest projects forward from the overlapping regions G1 and G2. As described above, the overlapping regions G1 and G2 have high rigidity because the two plate materials overlap each other. In addition, since the armrest bracket 10 is fixed to the overlapping regions G1 and G2 so that the rotation shaft 11 of the armrest protrudes forward from the overlapping regions G1 and G2, the length of the armrest itself during use is suppressed while suppressing the total length of the armrest itself. That is, the overhang length when the armrest is in a horizontal state can be secured.

  In addition, since the side frame connecting member 14 extends from the vicinity of the overlapping regions G1 and G2 to the other back side frames 7 and 8, the vicinity of the overlapping regions G1 and G2 is reinforced by the side frame connecting member 14. Thus, the mounting rigidity of the armrest bracket 10 can be further increased.

The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.
For example, in the above-described embodiment, the example in which the armrest bracket 10 is attached to each of the left and right backside frames 7 and 8 has been described. However, the armrest bracket 10 is attached only to at least one of the backside frames 7 and 8. May be.
In the above embodiment, the case where one end of the upper frame 9 is directly connected to the belt guide bracket 20 has been described as an example, but the upper frame 9 is connected to the vicinity of the belt guide bracket 20 in the right back side frame 8. Also good.

DESCRIPTION OF SYMBOLS 1 Seat apparatus 2 Seat back frame 3 Movable frame 4 Cushion side frame 5 Reclining mechanism 6 Seat frame 7 Back side frame 8 Back side frame 9 Upper frame 10 Armrest bracket 11 Rotating shaft 12 Box part 13 Lid part 14 Side frame connection member 20 Belt guide bracket 21 First bracket member 22 Second bracket member 31, 32 Side frame 33 Connecting member 34, 35 Mounting frame 71 Upper side frame 72 Lower side frame 81 Upper side frame 82 Lower side frame 83 Inner frame 84 Outer frame 90 Pad support member 91 Front plate member 92 Rear plate member 100 Seat pad 101 Notch 211, 212 First wall portion 221 Top plate portion 222 Front portion 223 224 second wall portion 331 central portion 332 and 333 both end portions 351 lower portion 352 the upper end 353 a central portion 913 and 923 notch G1 overlapping region G2 overlapping region

Claims (4)

A seat back frame having left and right back side frames;
An armrest bracket fixed to at least one of the left and right backside frames to support the armrest; and
The back side frame to which the armrest bracket is fixed is divided into an upper side frame and a lower side frame in the vertical direction,
The lower end of the upper side frame and the upper end of the lower side frame are integrated so as to overlap,
The seat device, wherein the armrest bracket is fixed to an overlapping region of the upper side frame and the lower side frame. The seat device according to claim 1,
The lower side frame is disposed so as to overlap the outer side of the upper side frame,
The seat device, wherein the armrest bracket is fixed to the lower side frame in the overlapping region. In the sheet apparatus according to claim 1 or 2,
The armrest bracket rotatably supports the armrest, and the armrest bracket is fixed to the overlap region so that a rotation axis of the armrest projects forward from the overlap region. Sheet device. In the sheet apparatus according to any one of claims 1 to 3,
The seat device further comprising a side frame connecting member that spans from the vicinity of the overlapping region to the other back side frame.

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