JP7397264B2 - Vehicle seat device - Google Patents

Description

The present invention provides a seat cushion frame and a seat back frame connected to the seat cushion frame, which integrally include a side plate portion and a flange portion extending laterally from an outer edge of the side plate portion, but are spaced apart from each other. The present invention relates to a vehicle seat device including a pair of side frames that extend linearly in parallel.

In such a vehicle seat device, the side frame of the seat back frame is formed into a U-shape in cross section and integrally includes a side plate portion and a flange portion connected to an outer edge of the side plate portion. A vehicle seat device is known from Patent Document 1.

Patent No. 5691769

In Patent Document 1, the side plate portion and the collar portion of the side frame are formed to have the same plate thickness, and increasing the rigidity of such a side frame can be achieved by increasing the plate thickness. However, this would result in an increase in weight. Therefore, it is desired to increase the rigidity of the side frame while suppressing the increase in weight as much as possible.

The present invention is. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle seat device that can increase the rigidity of a side frame while suppressing an increase in weight as much as possible.

In order to achieve the above object, the present invention provides a seat cushion frame and a seat back frame connected to the seat cushion frame, in which a side plate part and a flange part extending laterally from an outer edge of the side plate part are integrated. In the vehicle seat device, each of the vehicle seat devices includes a pair of side frames extending linearly in parallel with each other at positions spaced apart from each other, wherein at least one of the side frames of the seat cushion frame and the seat back frame is connected to the side plate portion. and an increased plate thickness that is thicker than the reference plate thickness in an increased plate thickness area that includes at least the flange, and the reference plate thickness area and the The first feature is that the plate is formed by changing the plate thickness in the plate thickness increasing area, and a part of the plate thickness increasing area is defined so as to surround from three directions an attachment part to be attached to the side plate part .

Further, the present invention provides a seat cushion frame and a seat back frame connected to the seat cushion frame, which integrally include a side plate portion and a flange portion that protrudes laterally from an outer edge of the side plate portion, but are spaced apart from each other. In the vehicle seat device, the vehicle seat device includes a pair of side frames that extend linearly in parallel with each other, wherein at least one of the seat cushion frame and the seat back frame has a reference plate thickness region that includes at least the side plate portion. and an increased plate thickness that is thicker than the reference plate thickness in the increased plate thickness region including at least the flange, and the plate thickness is increased in the reference plate thickness region and the increased plate thickness region. A second feature is that the side plate portion is provided with a reinforcing portion that is formed by changing the thickness and connects mutually separated portions of the increased plate thickness region .

In addition to the first feature of the present invention, a third feature of the present invention is that the side plate portion is provided with a reinforcing portion that connects mutually separated portions of the increased plate thickness region .

In addition to any of the configurations of the first to third features, the present invention provides that the increased plate thickness region includes a portion of the outer edge of the side plate portion that is integrally connected to the flange portion in a bent shape. The fourth feature is that it is set to include.

In addition to any one of the configurations of the first to fourth features, the present invention provides that the side plate portion of the side frame included in the seat back frame is capable of adjusting the angle of the seat back frame with respect to the seat cushion frame. A fifth feature is that a reclining unit attachment portion for attaching the reclining unit is provided, and the reclining unit attachment portion is formed thicker than the increased plate thickness of the increased plate thickness region .

In addition to any of the configurations of the first to fifth features, the present invention provides that a reinforcing portion that is raised either inside or outside is provided in a part of the side plate portion that is included in the increased thickness region. This is the sixth feature.

Further, in addition to any of the first to sixth features, the present invention has a seventh feature that a through hole is formed in the side plate portion in a portion included in the reference plate thickness region.

According to the first feature of the present invention, at least a portion of the side frame of at least one of the seat cushion frame and the seat back frame, including at least the flange portion, is made thick, thereby suppressing an increase in the weight of the side frame as much as possible. , it becomes possible to increase the rigidity of the side frame. Moreover, since the area surrounding the attachment part of the attachment part to the side plate part from three directions is formed thick, the rigidity of the attachment part can be improved.

Further, according to the second and third features of the present invention, the mutually separated portions of the increased plate thickness region are connected by the reinforcing portion, so that the rigidity of the side frame is further improved.

According to the fourth feature of the present invention , the increased plate thickness region is set to include a portion of the outer edge of the side plate portion that is integrally connected to the flange portion in a bent shape. The rigidity of the side frame can be further increased.

According to the fifth feature of the present invention, the reclining unit attachment portion provided for attaching the reclining unit to the side plate portion of the side frame in the seat back frame is thicker than the increased wall thickness of the increased plate thickness region. This improves the mounting rigidity of the reclining unit.

According to the sixth feature of the present invention, a reinforcing portion that is raised either inside or outside is provided in a part of the side plate portion in a portion included in the increased plate thickness region, so that the rigidity of the side plate portion can be further increased .

According to the seventh feature of the present invention, the through-hole is formed in the side plate portion in the reference plate thickness region, so that the processing accuracy of the through-hole can be improved.

It is a perspective view of the seat frame of a 1st embodiment. FIG. 3 is a side view of the seat back side frame. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 3 is a sectional view taken along line 4-4 in FIG. 2. FIG. It is a side view of the seat cushion side side frame. 6 is a sectional view taken along line 6-6 in FIG. 5. FIG. It is a side view of the seat back side side frame of 2nd Embodiment. It is a side view of the seat back side side frame of 3rd Embodiment. It is a side view of the seat back side side frame of 4th Embodiment.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, "front and back," "left and right," and "up and down" refer to directions viewed from the seated person when the seated person is facing forward in the longitudinal direction of the vehicle.

First, in FIG. 1, a seat frame 12 that is movable along a pair of slide rails 11 that extend linearly in parallel with each other with an interval in the vehicle width direction is a seat frame 12 that supports a seat cushion (not shown). The seat back frame 16 includes a cushion frame 15 and a seat back frame 16 connected to the seat cushion frame 15 so as to support a seat back (not shown) disposed above the seat cushion. A height adjustment mechanism 17 that can adjust the height of the seat cushion frame 15 is provided between the slide rails 11.

The seat cushion frame 15 includes a pair of seat cushion-side side frames 18 that extend linearly in the longitudinal direction of the vehicle while being spaced apart from each other in the vehicle width direction, and between the front end portions of the seat cushion-side side frames 18. and a rear pipe 20 that connects the rear end portions of the pair of seat cushion side side frames 18.

A cushion-side pressure receiving member 21 is spanned between the pan frame 19 and the rear pipe 20, and is elastically deformed in response to the load of a seated person via the seat cushion. This cushion-side pressure receiving member 21 has a plurality of (four in this embodiment) seat springs 22 formed by curving a metal wire in a zigzag manner so as to meander from side to side. The seat springs 22 are arranged symmetrically. The front end portions of the plurality of seat springs 22 are respectively engaged with locking portions 23 provided on the pan frame 19 of the seat frame 12. Further, the rear end portions of the seat springs 22 adjacent to each other are engaged with the rear pipe 20 of the seat frame 12, and are made of a resin rear end connecting member integrally molded with the seat spring by insert molding. 24, and the rear end connecting member 24 is formed to cover the rear pipe 20.

The seat back frame 16 includes a pair of seat back side frames 25A that extend in the vertical direction so as to be spaced apart from each other in the vehicle width direction, and a headrest that connects the upper portions of the seat back side frames 25A. It has a mounting bracket 26 and a lower frame 27 that connects the lower ends of the pair of seat back side side frames 25A.

Referring to FIGS. 2 and 3 together, the seat back side frame 25A includes a side plate portion 25a , a front flange portion 25b projecting inward from the front edge of the side plate portion 25a, and a side plate portion 25a. It is formed by press molding of a metal plate material, integrally having a rear side flange 25c extending inward from the rear edge of the side plate 25a and a lower side flange 25d extending inward from the lower edge of the side plate 25a. be done.

Referring also to FIG. 4, a bracket support part 25e is provided at the upper part of the seatback side side frame 25A, and this bracket support part 25e is located on the side where the front side collar part 25b is close to the side plate part 25a. When folded, the rear flange portion 25c is bent into a substantially C-shape that opens toward the front in the longitudinal direction of the vehicle.

The headrest mounting bracket 26 is formed by bending a pipe material into a substantially U-shape that opens downward, and both ends of the headrest mounting bracket 26 are connected to the bracket support portion 25e on the upper part of the seatback side side frame 25A. It is fitted and fixed. Further, a pair of cylindrical headrest support members 28 are fixed to the headrest mounting bracket 26 .

1 again, connection brackets 29 are fastened to the rear end portions of the pair of left and right seat cushion side side frames 18, and these connection brackets 29 are connected to the pair of left and right seat back side side frames 25A. The lower ends of the reclining unit 30 are connected to each other via a reclining unit 30. The rotation shaft 31 of the reclining unit 30 is attached to the lower end portions of the pair of left and right seatback side frames 25A, passing through the lower frame 27 connected to the lower end portions of the seatback side side frames 25A. , the angle of the seat back frame 16 with respect to the seat frame 12 can be adjusted by operating the reclining unit 30.

Further, a back side pressure receiving member 34 is arranged between the pair of left and right seat back side side frames 25A, which is elastically deformable when receiving the load of a seated person via the seat back. The back side pressure receiving member 34, which is formed of resin or the like so as to be elastically deformable, is spanned between the left and right seat back side side frames 25A via an upper connecting wire 35 and a lower connecting wire 36.

The seat back side side frame 25A has a reference plate thickness ta1 of a first reference plate thickness area A1 including at least the side plate portion 25a, the front side flange 25b, the rear side flange 25c, and the lower side flange 25d. The first reference plate thickness area A1 and the first plate thickness increase have an increased plate thickness tb1 that is thicker than the reference plate thickness ta1 in the first plate thickness increase area B1 that includes at least It is formed by changing the plate thickness in region B1.

In this embodiment, the first plate thickness increased region B1 includes the front flange 25b, the rear flange 25c, the lower flange 25d, and a part of the outer edge of the side plate 25a. As shown in FIGS. 3 and 4, among the outer edges of the side plate portion 25a, the front flange 25b, the rear flange 25c, and the lower flange 25d The first plate thickness increased region B1 is set to include a portion that is bent in a shape and continues integrally.

Further, a reclining unit attachment portion 32 having a first through hole 40 for attaching the reclining unit 30, which is an attachment part, is provided at the lower end of the side plate portion 25a. , the reclining unit 30 is surrounded by a part of the first increased thickness region B1 from three directions, front, rear, and bottom, and the reclining unit 30 is surrounded from three directions by the first increased thickness region B1. Become.

Moreover, the reclining unit attachment portion 32 is formed to be thicker than the increased thickness tb1 of the first increased thickness region B1, and the reclining unit attachment portion 32 is formed to be thicker than the increased thickness tb1 of the first increased thickness region B1. It is formed to have a thick plate thickness tc.

Further, a reinforcing portion that is raised either inside or outside is provided in a part of the side plate portion 25a included in the first thickened region B1, and in this embodiment, the side plate portion 25a A portion of the rear edge portion that is bent to the rear flange 25c and is included in the first increased plate thickness region B extends vertically along the rear flange 25c. A first reinforcing portion 37 is provided, and this first reinforcing portion 37 is formed so as to bulge inward when the seat back side side frame 25A is pressed.

In addition, a reinforcing portion 25a is provided on the side plate portion 25a to connect mutually separated portions of the first plate thickness increased region B1, and in this embodiment, the front edge portion of the side plate portion 25a and Second and third reinforcing portions 38 and 39 connecting the rear edge portions are provided on the side plate portion 25a. The second reinforcing part 38 is provided on the side plate part 25a and extends forward in the longitudinal direction of the vehicle from the middle part in the vertical direction of the first reinforcing part 37, and the third reinforcing part 39 is provided in the side plate part 25a. The reinforcing portion 37 is provided on the side plate portion 25a so as to extend forward in the longitudinal direction of the vehicle while being inclined slightly upward from the lower end portion of the reinforcing portion 37. These second and third reinforcing portions 38 and 39 are formed so as to bulge inward when the seat back side side frame 25A is pressed.

By the way, in addition to the first through hole 40, second to seventh through holes are provided in the side plate portion 25a of the seatback side side frame 25A in a portion included in the first reference plate thickness area A1. 41, 42, 43, 44, 45, and 46 are formed.

The second through hole 41 and the third through hole 42 are for attaching the upper connecting wire 35 and the lower connecting wire 36 of the back side pressure receiving member 34, and the fourth through hole 43 The fifth through hole 44 is for attaching an airbag module 47 to be attached to the seat back side frame 25A disposed on the door side of the pair of left and right seat back side frames 25A. The through hole 45 and the seventh through hole 46 are for attaching a webbing (not shown) for suppressing the deployment of the air bag.

5 and 6, the seat cushion side side frame 18 of the seat cushion frame 15 includes a side plate portion 18a, an upper flange portion 18b projecting inward from the upper edge of the side plate portion 18a, and the side plate portion 18a. It is integrally formed with a lower flange portion 18c projecting inward from the lower edge of the holder, and is formed by press molding of a metal plate material.

This seat cushion side side frame 18 has a reference plate thickness ta2 of a second reference plate thickness area A2 including at least the side plate portion 18a, and a second plate including at least the upper flange 18b and the lower flange 18c. While having an increased plate thickness tb2 that is thicker than the reference plate thickness ta2 in the increased thickness area B2, the plate thickness is changed in the second reference plate thickness area A2 and the second increased plate thickness area B2. It is formed by letting

In this embodiment, the second plate thickness increased region B2 is set to include the upper flange 18b, the lower flange 18c, and a part of the outer edge of the side plate 18a. The outer edge of the side plate portion 18a includes a bent portion integrally connected to the upper flange portion 18b and a bent portion integrally connected to the lower flange portion 18c. A second plate thickness increase area B2 is set.

Next, the operation of the first embodiment will be described. At least one of the seat cushion frame 15 and the seat back frame 16, in this embodiment, the seat back side frame 25 of the seat back frame 16, and the seat back side frame 25 of the seat back frame 16, The seat cushion side frame 18 of the cushion frame 15 has the reference plate thicknesses ta1 and ta2 of the first and second reference plate thickness areas A1 and A2 including at least the side plate parts 25a and 18a, the front side collar part 25b, and the rear side. The reference plate thicknesses ta1, ta2 are obtained in the first increased plate thickness region B1 including at least the flange 25b and the side flange 25c and the second increased plate thickness B2 including at least the upper flange 18b and the lower flange 18c. The first and second standard plate thickness regions A1, A2 and the first and second increased plate thickness regions B1, B2 have increased plate thicknesses tb1, tb2 that are thicker than the above. Since they are formed with varying plate thicknesses, it is possible to increase the rigidity of the side frames 25 and 28 while suppressing an increase in weight of the seat back side side frames 25 and the seat cushion side side frames 18 as much as possible. Become.

Further, the first and second plate thickness increased regions B1 and B2 are bent at the front side flange 25b, rear side flange 25b and side flange 25c among the outer edges of the side plate parts 25a and 18a. Since it is set to include a part that continues integrally with the upper flange 18b and the lower flange 18c in a bent shape, the seat back side side frame 25 and the seat cushion side side frame 18 Rigidity can be further increased.

Further, in the seat back side side frame 25, a part of the first plate thickness increase area B1 is defined so as to surround the reclining unit 30, which is an attachment part attached to the side plate portion 25a, from three directions, so that the reclining unit It is possible to improve the rigidity of the attachment portion of 30.

Moreover, a reclining unit attachment part 32 for attaching the reclining unit 30 is provided on the side plate part 25a of the side frame 25 on the side of the seat back frame, and the reclining unit attachment part 32 is connected to the increase in the first plate thickness increasing area B1. Since it is formed thicker than the plate thickness tb1, the mounting rigidity of the reclining unit 32 is improved.

Further, the first reinforcing portion 37 that is raised either inside or outside is provided in a part of the side plate portion of the side frame 25 on the seat back frame side that is included in the first increased thickness region A1. The rigidity of the side plate portion 25a can be further increased.

Further, second and third reinforcing portions 38 and 39 connecting mutually separated portions of the first thickened region A1 of the seat back frame side side frame 25 are provided on the side plate portion 25a. , the rigidity of the seat back frame side side frame 25 is further improved.

Further, in the seat back frame side side frame 25, first to seventh through holes 40 to 46 are formed in the side plate portion 25a in a portion included in the first reference plate thickness area A1. The processing accuracy of the seventh through holes 40 to 46 can be improved.

A second embodiment of the present invention will be described with reference to FIG. 7, but parts corresponding to the first embodiment will only be illustrated with the same reference numerals, and a detailed description will be given. Omitted.

The side plate portion 25a of the seatback side side frame 25B is provided with a fourth reinforcing portion 67 and a second reinforcing portion 38 that protrude either inside or outside. The fourth reinforcing portion 67 has an inclined portion 67a that slopes downward toward the front, and extends in the vertical direction along the rear flange portion 25c so as to be included in the first thickened area A1. It extends to and is provided on the side plate portion 25a. Further, the second reinforcing portion 38 extends in a direction crossing the longitudinal direction of the seatback side side frame 25B, and extends forward in the longitudinal direction of the vehicle from an intermediate portion in the vertical direction of the fourth reinforcing portion 67. In this embodiment, the fourth reinforcing part 67 and the second reinforcing part 38, which are provided on the side plate part 25a, are formed to bulge inward when the seat back side side frame 25B is pressed. .

This second embodiment can also provide the same effects as the first embodiment.

A third embodiment of the present invention will be described with reference to FIG. 8, but parts corresponding to the first and second embodiments will only be illustrated with the same reference numerals, and details will be explained. Further explanation will be omitted.

A fourth reinforcing part 67, a fifth reinforcing part 68, and a second reinforcing part 38 are provided on the side plate part 25a of the seat back side side frame 25C, which protrude either inside or outside. The fifth reinforcing portion 68 extends forward in the longitudinal direction of the vehicle from the base end of the inclined portion 67a of the fourth reinforcing portion 67 in a direction that intersects the longitudinal direction of the seat back side side frame 25C. It is provided in the section 25a. Further, the second reinforcing portion 38 is provided on the side plate portion 25a and extends in a direction crossing the longitudinal direction of the seat back side side frame 25C, and is provided on the side plate portion 25a, and is connected to the fourth reinforcing portion 67 and the fifth reinforcing portion. 68 and the second reinforcing portion 38 are formed in this embodiment so as to bulge inward when the seat back side side frame 25C is pressed.

The third embodiment can also provide the same effects as the first and second embodiments.

A fourth embodiment of the present invention will be described with reference to FIG. 9, but parts corresponding to the first to third embodiments will only be illustrated with the same reference numerals, and details will be explained. Further explanation will be omitted.

The side plate portion 25a of the seat back side side frame 25D is provided with a first reinforcing portion 37 and sixth to eighth reinforcing portions 69, 70, 71 that protrude either inside or outside, and these reinforcing portions 37, 69 In this embodiment, 71 is formed to bulge inward when the seat back side side frame 25D is pressed.

The sixth reinforcing portion 69, the seventh reinforcing portion 70, and the eighth reinforcing portion 71 are provided on the side plate portion 25a so as to extend in the longitudinal direction of the vehicle at positions spaced apart from each other in the vertical direction. .

The fourth embodiment can also provide the same effects as the first to third embodiments.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention described in the claims. is possible.

15... Seat cushion frame 16... Seat back frame 18, 25A, 25B, 25C, 25D... Side frame 18a, 25a... Side plate part 18b, 18c, 25b, 25c, 25d... Flange part 30... Reclining unit 32 which is an attachment part... Reclining unit attachment part 37, 38, 39, 67... Reinforcement part 40, 41, 42, 43, 44, 45, 46... Through hole A1, A2... Reference plate thickness area B1, B2... Increased plate thickness area ta1, ta2... Standard plate thickness tb1, tb2... Increased plate thickness

Claims (7)

The seat cushion frame (15) and the seat back frame (16) connected to the seat cushion frame (15) are connected to the side plate portions (18a, 25a) and laterally from the outer edge of the side plate portions (18a, 25a). A pair of side frames (18, 25A, 25B, 25C, 25D) are integrally formed with projecting flanges (18b, 18c; 25b, 25c, 25d) and extend in a straight line at positions spaced apart from each other. In the respective vehicle seat devices,
A reference plate thickness region in which the side frame (18, 25A, 25B, 25C, 25D) of at least one of the seat cushion frame (15) and the seat back frame (16) includes at least the side plate portion (18a, 25a). (A2, A1) and the standard plate thickness (ta2, ta1) in the increased plate thickness region (B2, B1) including at least the flange (18b, 18c; 25b, 25c, 25d). The plate thickness is changed in the reference plate thickness region (A2, A1) and the plate thickness increase region (B2, B1) while having an increased plate thickness (tb2, tb1) that is thicker than the plate thickness (ta1). formed ,
A vehicle seat device characterized in that a part of the increased plate thickness region (B1) is defined so as to surround from three directions an attachment part (30) attached to the side plate part (25a) . The seat cushion frame (15) and the seat back frame (16) connected to the seat cushion frame (15) are connected to the side plate portions (18a, 25a) and laterally from the outer edge of the side plate portions (18a, 25a). A pair of side frames (18, 25A, 25B, 25C, 25D) are integrally formed with projecting flanges (18b, 18c; 25b, 25c, 25d) and extend in a straight line at positions spaced apart from each other. In the respective vehicle seat devices,
A reference plate thickness region in which the side frame (18, 25A, 25B, 25C, 25D) of at least one of the seat cushion frame (15) and the seat back frame (16) includes at least the side plate portion (18a, 25a). (A2, A1) and the standard plate thickness (ta2, ta1) in the increased plate thickness region (B2, B1) including at least the flange (18b, 18c; 25b, 25c, 25d). The plate thickness is changed in the reference plate thickness region (A2, A1) and the plate thickness increase region (B2, B1) while having an increased plate thickness (tb2, tb1) that is thicker than the plate thickness (ta1). formed ,
A vehicle seat device characterized in that reinforcing portions (38, 39) connecting mutually separated portions of the increased plate thickness region (B1) are provided on the side plate portion (25a). The vehicle seat according to claim 1 , wherein reinforcing portions (38, 39) connecting mutually separated portions of the increased plate thickness region (B1) are provided on the side plate portion (25a). Device. The increased plate thickness region (B2, B1) is a part of the outer edge of the side plate part (18a, 25a) that is integrally connected to the collar part (18b, 18c; 25b, 25c, 25d) in a bent shape. The vehicle seat device according to any one of claims 1 to 3, characterized in that the vehicle seat device is configured to include the following. The side plate portion (25a) of the side frame (25A, 25B, 25C, 25D) included in the seat back frame (16) is provided with an adjustable angle of the seat back frame (16) with respect to the seat cushion frame (15). A reclining unit attachment part (32) for attaching a reclining unit (30) is provided, and the reclining unit attachment part (32) is thicker than the increased plate thickness (tb1) of the increased plate thickness area (B1). The vehicle seat device according to any one of claims 1 to 4 , characterized in that it is formed as a. Claims 1 to 3, characterized in that a reinforcing portion (37, 67) that is raised either on the inside or outside is provided in a part of the side plate portion (25a) that is included in the thickened region (B1). 5. The vehicle seat device according to any one of 5 . Claims 1 to 4, wherein through holes (40, 41, 42, 43, 44, 45, 46) are formed in the side plate portion (25a) in a portion included in the reference plate thickness region (A1). 6. The vehicle seat device according to any one of 6.

Images