JP2019064561A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat capable of suppressing an increase in size of the seat. SOLUTION: A vehicle seat is arranged between left and right side frames 11 arranged apart from each other on the left and right, and a first support member 20 arranged between the left and right side frames 11 to support a seated person, and a first support. The left and right second support members 30 which are arranged on the left and right sides of the member 20 and support the seater together with the first support member 20, and the left and right cover members 60 which cover at least the inside of the rear end portion of the side frame 11 in the left and right direction. Be prepared. The second support member 30 is arranged at a position closer to the front side than the cover member 60, and the rear end portion thereof is arranged so as to overlap the cover member 60 when viewed from the left-right direction. [Selection diagram] Fig. 2

Description

  The present invention relates to a vehicle seat mounted on a vehicle such as a car.

  As a vehicle seat mounted on a vehicle such as an automobile, for example, Patent Document 1 discloses a cushion frame, an S-shaped spring mounted on the inside of the cushion frame, and left and right inclinations supporting the pad together with the S-shaped spring. A sheet with a plate is disclosed. Further, Patent Document 2 discloses a vehicle seat provided with a resin cover member attached to a joint portion of a side frame and a rear pipe constituting a cushion frame and covering the inside in the left and right direction of the rear end of the side frame. ing.

JP, 2016-117406, A (Drawing 4, Drawing 5) JP, 2015-209086, A (Drawing 1)

  By the way, when providing both an inclined plate and a cover member inside a cushion frame, a seat cushion (seat) may enlarge.

Then, an object of this invention is to provide the vehicle seat which can suppress the enlargement of a seat.
Moreover, this invention aims at suppressing that the member which supports a seated person remove | deviates.
Another object of the present invention is to suppress displacement of a member for supporting a seated person back and forth.
Another object of the present invention is to improve the mounting rigidity of a member for supporting a seated person.
Another object of the present invention is to manufacture a member for supporting a seated person easily and inexpensively.
Another object of the present invention is to reduce fatigue even when sitting for a long time.

  In order to achieve the above-described object, the vehicle seat of the present invention is a first support member disposed between the left and right side frames disposed apart from each other on the left and right, and the left and right side frames to support a seated person And left and right second support members disposed on the left and right sides of the first support member and supporting the seated person with the first support member, and left and right covers covering at least the inside in the left and right direction of the rear end of the side frame. And the second support member is disposed at a position closer to the front side than the cover member, and the rear end portion is disposed so as to overlap the cover member when viewed from the left and right direction. I assume.

  According to such a configuration, for example, since the second support member and the cover member can be compactly arranged as compared with the case where the second support member and the cover member are arranged side by side in the front-rear direction, the sheet is enlarged Can be suppressed.

  In the vehicle seat described above, the second support member may have a first engagement portion engaged with the side frame, and a second engagement portion engaged with the first support member. Can.

  In the above-described vehicle seat, the first engagement portion and the second engagement portion may be assembled in a direction in which the first engagement portion is engaged with the side frame, and the second engagement portion. The assembling direction when engaging with the first support member may be different.

  According to this, it is possible to suppress the second support member from being detached from the side frame and the first support member.

  In the vehicle seat described above, the side frame has a plate-like side frame main body, and a rod member fixed to the side frame main body, having a first extension portion extending in the front and rear direction, The first engaging portion engages with the first extending portion, and the rod member extends from the front and rear ends of the first extending portion in a direction intersecting the first extending portion. It may be configured to have two extending portions, or to be inclined with respect to the front-rear direction so that one of the front end and the rear end of the first extending portion is positioned inside in the left-right direction with respect to the other.

  According to this, since it becomes difficult for the first engaging portion to move back and forth with respect to the first extending portion, it is possible to suppress the second supporting member from being displaced back and forth.

  The vehicle seat described above includes a pair of connecting frames which are disposed to be separated in the front and rear direction and connect the left and right side frames, and the first support member extends in the front and rear while bending alternately in the left and right direction. The second engaging portion may have a shape conforming to a bent portion of the S spring, and be engaged with the bent portion.

  According to this, the attachment rigidity of the second support member to the S spring of the first support member can be improved.

  In the vehicle seat described above, the first engagement portion has a first hook portion positioned above the portion of the side frame engaged with the first engagement portion, and the second engagement portion is The second support portion may have a second hooking portion located on the upper side of a portion engaged with the second engaging portion of the first support member.

  According to this, when a load is applied to the second support member from above, the first hooking portion is hooked on the side frame and the second hooking portion is hooked on the first support member, so the second support member is the side frame and the second hook (1) It is possible to suppress disengagement from the support member.

  The vehicle seat described above includes a pair of connecting frames which are disposed to be separated in the front and rear direction and connect the left and right side frames, and the first support member extends in the front and rear while bending alternately in the left and right direction. A plurality of S springs arranged laterally in the left and right connecting frames, and a connecting wire for connecting the plurality of S springs, wherein the second engagement portion is a bent portion of the S spring in the left-right direction; It may be configured to pass between the bending portion and a portion extending in the front-rear direction of the connecting wire.

  According to this, it is possible to suppress the second support member from being detached from the first support member.

  In the vehicle seat described above, the second engagement portion includes a third engagement portion and a fourth engagement portion, and the third engagement portion and the fourth engagement portion are the third engagement portion. The assembling direction in the case of engaging the first supporting member with the first supporting member may be different from the assembling direction in the case of engaging the fourth engaging portion with the first supporting member.

  According to this, it is possible to suppress the second support member from being detached from the first support member.

  In the vehicle seat described above, the second support member may be made of resin and may have a through hole overlapping the second engagement portion when viewed from a predetermined one direction.

  According to this, when the second support member made of resin can be molded using a mold, it can be punched out in a direction along a predetermined one direction. (2) The support member can be easily and inexpensively manufactured.

  In the vehicle seat described above, the lower end portion of the second support member may be positioned lower than the first support member.

  According to this, when a load is applied to the first support member from above, the left and right direction end portions of the first support member can be supported from below by the second engaging portion, so the left and right of the first support member The end of the direction is less likely to sink down. This makes it possible to reduce fatigue even when sitting for a long time.

  In the vehicle seat described above, the lower end of the second support member may be located above the lower end of the cover member.

  According to this, since the second support member can be configured to be compact, the increase in size of the sheet can be suppressed.

  According to the present invention, the increase in size of the sheet can be suppressed.

  Further, according to the present invention, the second support member can be prevented from being detached by the assembly direction of the first engagement portion being different from the assembly direction of the second engagement portion.

  Further, according to the present invention, the second support member is displaced back and forth by providing the second extension part in front of and behind the first extension part of the rod member or inclining the first extension part. Can be suppressed.

  Further, according to the present invention, the mounting rigidity of the second support member can be improved by forming the second engaging portion in a shape following the bent portion of the S spring and engaging the bent portion.

  Further, according to the present invention, by providing the first hooking portion in the first engaging portion and providing the second hooking portion in the second engaging portion, it is possible to suppress the second support member from being detached.

  Further, according to the present invention, by disposing the second engaging portion between the bent portion of the S spring and the portion extending in the front and rear direction of the connecting wire, it is possible to suppress the second support member from being detached. it can.

  Further, according to the present invention, the second supporting member can be prevented from being detached by the assembling direction of the third engaging portion being different from the assembling direction of the fourth engaging portion.

  Further, according to the present invention, the second support member can be easily and inexpensively manufactured by providing the through hole in which the second support member made of resin overlaps the second engagement portion when viewed from a predetermined one direction. it can.

  Further, according to the present invention, the lower end portion of the second support member is positioned lower than the first support member, whereby the feeling of fatigue can be reduced even when sitting for a long time.

  Further, according to the present invention, by making the lower end of the second support member above the lower end of the cover member, it is possible to suppress the increase in size of the sheet.

It is a figure showing the seat for vehicles concerning an embodiment. It is a figure which shows a cushion frame. It is the figure which looked at a cushion frame, a 1st support member, a 2nd support member, and a cover member from the upper side. It is a figure which expands and shows vicinity of the 2nd support member of the right of FIG. It is a figure which expands and shows vicinity of the 2nd 2nd supporting member on the left of FIG. It is the figure which looked at the right 2nd support member vicinity from the left-right direction inner side. It is a figure which expands and shows 1st actuator vicinity. It is a figure (a), (b) which shows the right 2nd support member. It is a figure (a), (b) which shows the left 2nd supporting member. It is WW sectional drawing (a) of FIG. 4, and XX sectional drawing (b). It is ZZ sectional drawing of FIG. It is YY sectional drawing of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the present specification, front, rear, left, right, upper and lower are based on front, rear, left, right, upper, lower as viewed from a person sitting on a seat (seated person).
As shown in FIG. 1, the vehicle seat of the present embodiment is configured as a vehicle seat S mounted on a vehicle, and includes a seat cushion S1, a seat back S2, and a headrest S3.

  As shown in FIG. 2, inside the seat cushion S1, a cushion frame F1 that constitutes the frame of the seat cushion S1 is incorporated. The seat cushion S1 is configured by covering the cushion frame F1 with a cushion pad made of urethane foam or the like and a skin material made of cloth, leather or the like.

The cushion frame F1 includes left and right side frames 11, and a front frame 12 and a rear frame 13 as a pair of connection frames.
The left and right side frames 11 are spaced apart in the left and right direction. Each side frame 11 is mainly composed of a long side-plate-like side frame main body 11A made of a metal plate. A back frame (not shown) that constitutes a framework of the seat back S2 is rotatably attached to a rear end portion of the left and right side frame main bodies 11A via a reclining mechanism. The seat back S2 is configured by covering the back frame with a back pad made of urethane foam or the like and a skin material.

The front frame 12 and the rear frame 13 are spaced apart in the front-rear direction.
The front frame 12 is a so-called pan frame made of a metal plate, and connects the front ends of the left and right side frame main bodies 11A (side frames 11). The front frame 12 is provided with four spring hooks 12A arranged side by side.
The rear frame 13 is made of metal pipe material, and connects the rear ends of the left and right side frame bodies 11A (side frames 11). The rear frame 13 is provided with four spring hooks 13A arranged side by side.

  The cushion frame F1 is supported by a pair of slide mechanisms 15 which are disposed to be separated left and right. The left and right slide mechanisms 15 each include a lower rail 15A fixed to the floor of the vehicle, and an upper rail 15B engaged slidably with the lower rail 15A in the front-rear direction. The cushion frame F1 is fixed to the upper rail 15B and is slidable forward and backward with respect to the floor of the vehicle.

The seat cushion S1 includes a first support member 20, left and right second support members 30, left and right cover members 60, a first actuator 70 as an actuator, and a second actuator 80.
The first support member 20 is a member for supporting a seated person from below via a cushion pad (not shown), and is disposed between the left and right side frames 11. The first support member 20 includes a plurality of S springs 21 arranged side by side and a connecting wire 28 connecting the plurality of S springs 21.

  As shown in FIG. 3, the S spring 21 is an elastically deformable linear spring that extends back and forth while bending alternately to the left and right. Each S spring 21 has a plurality of outer bending portions 22 bent in a substantially arc shape so as to be convex outward in the lateral direction, and a plurality of bending portions in a substantially arc shape so as to be convex inward in the lateral direction. An inner bent portion 23 and a plurality of connecting portions 24 extending in a substantially linear shape and connecting the outer bent portion 22 and the inner bent portion 23 are provided. In the present embodiment, the S-spring 21 includes two first S-springs 21A as wire members and two second S-springs 21B. The first S-springs 21A are spaced apart in the left and right direction, and the second S-springs 21B are arranged in the left and right direction between the left and right first S-springs 21A. The first S spring 21A and the second S spring 21B have their front end portions hooked on the spring hooking portion 12A of the front frame 12, and their rear end portions hooked on the spring hooking portion 13A of the rear frame 13. The front frame 12 and the rear frame 13 are bridged.

  The connection wire 28 is a wire bent into a substantially rectangular shape, and is fixed to the first S spring 21A and the second S spring 21B by a caulking member 29 made of a metal plate. Specifically, the connecting wire 28 is fixed to the first S spring 21A and the second S spring 21B by the caulking member 29 at eight connecting portions 24 which are portions extending to the left and right of the first S spring 21A and the second S spring 21B. . As shown in FIG. 4 and FIG. 5, the left and right extending portions 28A which are the portions extending in the front and back direction of the connecting wire 28 are disposed in a state of intersecting with one outer bending portion 22 of the first S spring 21A. . The outer bent portion 22 intersecting the extending portion 28A is disposed such that an end portion on the outer side in the left-right direction is outside the extending portion 28A in the left-right direction.

  As shown in FIG. 2, the left and right cover members 60 are members that cover the rear end portions of the left and right side frame main bodies 11A, and are made of resin. The cover member 60 is provided, for example, to prevent a person from touching the metal side frame main body 11A. The left and right cover members 60 each have an inner cover portion 61 and an upper cover portion 62. In the present embodiment, the left and right cover members 60 are not symmetrical in shape but have substantially the same configuration. Therefore, in the following, each part will be described while illustrating the right cover member 60.

As shown in FIG. 6, the inner cover portion 61 is a portion that covers the inner side in the left-right direction of the rear end portion of the side frame main body 11A (side frame 11), and is formed in a plate shape extending substantially vertically. At the rear end of the inner cover portion 61, a rear frame cover portion 63 which engages with the end of the rear frame 13 and covers mainly the upper portion of the end of the rear frame 13 is provided. The portion on the front side of the rear frame cover portion 63 of the inner cover portion 61 extends below the lower edge of the side frame main body 11A.
The upper cover portion 62 is a portion covering the upper side of the rear end portion of the side frame main body 11A. The upper cover portion 62 is formed to extend laterally outward from the upper end of the inner cover portion 61 along the upper edge of the side frame main body 11A.

  As shown in FIG. 2, the first actuator 70 is an actuator for driving a tilt mechanism that raises and lowers the front portion of the cushion frame F <b> 1 and is disposed inside the right side frame 11 in the left-right direction. The second actuator 80 is an actuator for driving a height mechanism that adjusts the height of the cushion frame F1, and is disposed outside the left side frame 11 in the left-right direction.

  As shown in FIG. 7, the first actuator 70 includes a motor 71 and a gear box 72. The motor 71 is a motor capable of switching the direction of rotation, and the gear box 72 accommodates a plurality of gears (not shown) for reducing the rotational driving force of the motor 71 and transmitting it to the pinion gear 73. The gear box 72 has a protrusion 72A that protrudes inward in the left-right direction at the rear end. The gear box 72 is fixed to the motor 71 by a screw 79 at the projecting portion 72A. Further, the gear box 72 has a connecting portion 72B on the upper side of the rear end portion. A connector 74C provided at an end of an electric wire 74 for supplying electric power to the motor 71 is connected to the connection portion 72B.

  A tilt link 75 is disposed on the inner side in the left-right direction of the right side frame 11 and on the front side of the first actuator 70. The tilt link 75 is rotatably provided on the side frame main body 11A coaxially with the front pipe 14 connecting the left and right side frame main bodies 11A. The pinion gear 73 meshes with a sector gear 75 </ b> G formed on the tilt link 75. In the cushion frame F1, when the first actuator 70 is driven to rotate the pinion gear 73 and the tilt link 75, the front portions of the left and right side frame main bodies 11A move up and down, and the angle of the seat surface of the seat cushion S1 is It can be adjusted. When the first actuator 70 is not driven, the rotation of the pinion gear 73 is restricted by a brake unit 76 (see FIG. 3) disposed outside in the left-right direction of the right side frame 11.

  The upper end of the front link 16 is rotatably coupled to the tilt link 75, and the lower end of the front link 16 is rotatably coupled to the front of the upper rail 15B. Further, the lower end portion of the rear link 17 is rotatably coupled to the rear of the upper rail 15B, and the upper end portion of the rear link 17 is rotatable to the rear end portion of the side frame main body 11A via the rear frame 13. Combined with The height of the cushion frame F1 can be adjusted by rotating the rear link 17 back and forth by driving the second actuator 80 (see FIG. 2).

As shown in FIG. 3, the left and right second support members 30 are members supporting the seated person together with the first support member 20 and made of resin. One second support member 30 is disposed on each of the left and right sides of the first support member 20. Specifically, the second support member 30 includes a third support member 40 disposed on the right side of the first support member 20 and a fourth support member 50 disposed on the left side of the first support member 20.
As shown in FIG. 8A, the third support member 40 (the second support member 30 on the right) includes a support portion 41, a first engagement portion 42 as an attachment portion, and a plurality of second engagement portions. And 43. Further, as shown in FIG. 9A, the fourth support member 50 (the second support member 30 on the left) includes a support portion 51, a first engagement portion 52, and a plurality of second engagement portions 53. have.

  The support parts 41 and 51 are parts which support a seated person, and are formed in a substantially plate shape. The support portions 41 and 51 have first portions 41A and 51A and second portions 41B and 51B. The first portions 41A and 51A are inclined to extend upward as they extend outward in the left-right direction, and the second portions 41B and 51B extend inward in the left-right direction from the lower end of the first portions 41A and 51A. Specifically, in the support portion 41, the first portion 41A extends obliquely upward to the right, and the second portion 41B extends leftward from the lower end of the first portion 41A. Further, in the support portion 51, the first portion 51A extends obliquely to the upper left, and the second portion 51B extends to the right from the lower end of the first portion 51A.

  As shown in FIG. 8A, the support portion 41 of the third support member 40 has a through hole 44. The through hole 44 includes a first through hole 44A and a second through hole 44B. The first through hole 44A is a substantially rectangular hole disposed near the center in the front-rear direction of the upper portion of the first portion 41A, and is formed to penetrate substantially in the left and right direction. On the other hand, the second through hole 44B is arranged to straddle the bent portion 41C between the first portion 41A and the second portion 41B, penetrates substantially in the left and right in the first portion 41A, and substantially vertically in the second portion 41B. It is formed to penetrate. The second through hole 44B has a shape longer in the front and rear than the first through hole 44A, the front end is located on the front side of the front end of the first through hole 44A, and the rear end is from the rear end of the first through hole 44A. Also located on the back side. In the present embodiment, the through holes corresponding to the first through holes 44A and the second through holes 44B are not formed in the support portion 51 of the fourth support member 50.

As shown in FIGS. 8 and 9, the support portion 41 has a rib 45 as a thick reinforcing portion, and the support portion 51 has a rib 55. The rib 45 includes a first rib 45A, a second rib 45B, and a third rib 45C, and the rib 55 includes a fourth rib 55A and a fifth rib 55B.
As shown to Fig.8 (a), the 1st rib 45A is formed in the surface of the front side (seated person side) of the support part 41. As shown in FIG. Specifically, the first rib 45A protrudes from the vicinity of the bent portion 41C, and extends substantially in the left-right direction so as to connect the first portion 41A and the second portion 41B. A plurality of first ribs 45A are formed side by side in the front-rear direction. The first rib 45 </ b> A is formed around the through hole 44. Specifically, the first ribs 45A are respectively formed on the front and rear sides of the second through hole 44B.

  As shown in FIG. 8 (b), the second rib 45 </ b> B and the third rib 45 </ b> C are formed on the surface on the back side (the side opposite to the seated person) of the support portion 41. Specifically, the second rib 45B protrudes from the surface on the back side of the second portion 41B, and extends long back and forth. A plurality of second ribs 45B are formed side by side. On the other hand, the third rib 45C protrudes from the surface on the back side of the first portion 41A, and is formed in a substantially honeycomb shape. The second rib 45 </ b> B and the third rib 45 </ b> C are formed around the through hole 44. In detail, the second rib 45B is formed close to the inner side in the left-right direction of the second through hole 44B, and the third rib 45C mainly includes the lower side and the front side of the first through hole 44A and the second through hole 44B. It is formed close to the upper side.

  As shown in FIG. 9A, the fourth rib 55 </ b> A is formed on the surface on the front side of the support portion 51. Specifically, the fourth rib 55A protrudes from the bent portion 51C between the first portion 51A and the second portion 51B, and extends substantially in the left-right direction so as to connect the first portion 51A and the second portion 51B. A plurality of fourth ribs 55A are formed side by side in the front-rear direction. Further, as shown in FIG. 9 (b), the fifth rib 55 B is formed on the surface on the back side of the support portion 51. Specifically, the fifth rib 55B protrudes from the surface on the back side of the first portion 51A, and is formed in a substantially honeycomb shape.

  The first engaging portions 42 and 52 are portions for attaching the second support member 30 to the side frame 11. Specifically, as shown in FIG. 3, the left and right side frames 11 each have rod members 18 and 19 fixed to the side frame main body 11A, and the second support member 30 has a first engagement portion 42, The rod 52 is attached to the side frame 11 by engaging with the rod members 18 and 19 of the side frame 11.

  As shown in FIG. 7, the rod member 18 includes a first extending portion 18A, a pair of second extending portions 18B, and a pair of third extending portions 18C. The first extending portion 18A extends along the front-rear direction. Further, the second extending portion 18B extends from the front and rear ends of the first extending portion 18A in the direction crossing the first extending portion 18A, specifically, in the lateral direction. In addition, the third extending portion 18C extends generally downward from the end of the second extending portion 18B in the left-right direction. The rod member 18 has a pair of third extending portions 18C fixed by welding or the like on the outer surface in the left-right direction of the right side frame main body 11A near the center of the right side frame main body 11A in the front-rear direction.

  As shown in FIG. 10A, in the third support member 40, the first engagement portion 42 is engaged with the first extension portion 18A of the right rod member 18. The first engaging portion 42 is formed in a hook shape whose lower side is opened in a cross sectional view, and has a first hooking portion 42A. The first hooking portion 42A is a portion of the hook-shaped first engaging portion 42 located on the upper side of the first extending portion 18A (the portion with which the first engaging portion 42 of the side frame 11 engages). .

  As shown in FIG. 5, the rod member 19 has a first extension 19A extending substantially in the front-rear direction, a front rod 19B located on the front of the first extension 19A, and a rear of the first extension 19A. And the rear rod portion 19C located at The first extending portion 19A extends obliquely with respect to the front-rear direction so that the front end of the first extending portion 19A is positioned inward in the left-right direction with respect to the rear end when viewed from the upper side. In other words, the first extending portion 19A extends so as to be positioned inward in the left-right direction toward the front side. The rod member 19 has the front rod portion 19B and the rear rod portion 19C in the left-right direction of the left side frame main body 11A such that the first extension 19A is disposed near the center of the left side frame main body 11A in the front-rear direction. It is fixed to the outside surface by welding etc.

  As shown in FIG. 11, in the fourth support member 50, the first engagement portion 52 is engaged with the first extension portion 19A of the left rod member 19. The first engaging portion 52 is formed in a hook shape with an open right side (inner side in the left-right direction) in a cross sectional view, and has a first hooking portion 52A. The first hooking portion 52A is a portion of the hook-shaped first engaging portion 52 located on the upper side of the first extending portion 19A (the portion engaged with the first engaging portion 52 of the side frame 11). .

  As shown in FIGS. 10A, 10B and 11, the second engagement portions 43, 53 are portions for attaching the second support member 30 to the first support member 20. As shown in FIG. Specifically, the second support member 30 is attached to the first support member 20 by engaging the second engaging portions 43 and 53 with the outer bent portion 22 of the first S spring 21A constituting the first support member 20. It is done.

  The second engaging portions 43 and 53 extend from the surface on the front side of the second portions 41B and 51B upward, and extend from the upper ends of the extending portions 43P and 53P outward in the left-right direction. It has hook portions 43Q and 53Q. The second hooking portions 43Q and 53Q are the outer bending portions 22 of the first S spring 21A of the second engaging portions 43 and 53 (portions where the second engaging portions 43 and 53 of the first support member 20 engage) Is located above the

  The second engaging portions 43 and 53 have a shape following the outer bending portion 22 of the first S spring 21A, and are engaged with the outer bending portion 22. Specifically, in the second engaging portions 43 and 53, the lower surfaces of the second hooking portions 43Q and 53Q engaged with the outer bending portion 22 substantially follow the substantially circular cross-sectional shape of the outer bending portion 22. It is an arc-shaped surface. Further, as shown in FIG. 4 and FIG. 5, the second hooking portions 43Q and 53Q have a substantially arc shape whose outer end in the left-right direction conforms to the arc shape of the outer bending portion 22. Further, the extension portions 43P and 53P are substantially arc-shaped surfaces in which the left and right direction outer surfaces (engagement surfaces 43R and 53R) with which the outer bent portion 22 engages are along the arc shape of the outer bent portion 22. ing.

  As shown in FIG. 4, the second engagement portion 43 of the third support member 40 includes a second engagement portion 43A, a second engagement portion 43B, a second engagement portion 43C, and a second engagement portion 43D. The second engagement portion 43A, the second engagement portion 43B, the second engagement portion 43C, and the second engagement portion 43D are arranged in this order from the front side. To explain further, the second engaging portions 43A and 43D are disposed apart from each other in the front and rear direction, and the second engaging portions 43B and 43C are disposed between the second engaging portions 43A and 43D. The second engagement portion 43A is disposed at the front end of the second portion 41B, and the second engagement portion 43D is disposed at the rear end of the second portion 41B. In addition, the second engaging portion 43A is disposed forward of the first through hole 44A and the second through hole 44B, and the second engaging portion 43D is rearward of the first through hole 44A and the second through hole 44B. Is located in In other words, the first through holes 44A and the second through holes 44B are disposed between the second engaging portions 43A and 43D (a pair of first wire engaging portions) in the front-rear direction.

  The second engagement portion 43B is disposed forward of the first through hole 44A, and the second engagement portion 43C is disposed rearward of the first through hole 44A. In other words, the first through hole 44A is disposed between the second engaging portions 43B and 43C in the front-rear direction. On the other hand, the second engaging portions 43B and 43C (second wire engaging portions) are disposed in the same range as the second through holes 44B which are long in the front-rear direction. In other words, the second engaging portions 43B and 43C and the second through holes 44B are disposed at the same longitudinal position. Furthermore, the second engaging portions 43B and 43C and the second through holes 44B are arranged side by side.

  The second engaging portions 43B to 43D other than the second engaging portion 43A and the second engaging portion 43A are a set when the second engaging portion 43A is engaged with the outer bending portion 22 of the first S spring 21A. The attaching direction is different from the assembling direction in the case where the second engaging portions 43B to 43D are engaged with the outer bent portion 22 of the first S spring 21A. Specifically, the second engagement portion 43A is formed such that the engagement surface 43R as a whole faces obliquely rearward outside in the left-right direction, and the second hooking portion 43Q extends obliquely backward outward in the left-right direction. The second engaging portions 43B to 43D are formed such that the engaging surface 43R as a whole is directed outward in the left-right direction, and the second hooking portion 43Q is extended outward in the left-right direction. Thereby, the assembling direction in the case of engaging the second engaging portion 43A with the outer bending portion 22 is a direction toward the diagonally rearward outside in the left-right direction, while the second engaging portions 43B to 43D are outside. The assembling directions in the case of engaging with the bent portions 22 are directions toward the outer side in the left-right direction, which are different from each other. In the present embodiment, one of the second engagement portion 43A and the second engagement portions 43B to 43D corresponds to the "third engagement portion", and the other corresponds to the "fourth engagement portion".

  As shown in FIG. 5, the second engaging portion 53 of the fourth support member 50 is a second engaging portion 53 that includes a second engaging portion 53A, a second engaging portion 53B, and a second engaging portion 53C. In addition, the second engagement portion 53A, the second engagement portion 53B, and the second engagement portion 53C are arranged in this order from the front side. To explain further, the second engaging portions 53A and 53C are spaced apart in the front-rear direction, and the second engaging portion 53B is disposed between the second engaging portions 53A and 53C. The second engagement portion 53A is disposed at the front end of the second portion 51B, the second engagement portion 53B is disposed near the center in the front-rear direction of the second portion 51B, and the second engagement portion 53C is It is disposed at the rear end of the second portion 51B.

  Each of the second engaging portions 53A to 53C is formed such that the engaging surface 53R as a whole faces outward in the left-right direction, and the second hooking portion 53Q extends outward in the left-right direction. Thus, the assembling directions in the case of engaging the second engaging portions 53A to 53C with the outer bent portion 22 of the first S spring 21A are all directed to the outer side in the left-right direction, and are the same.

  As shown in FIGS. 4 and 5, the second engaging portions 43D and 53C disposed at the rear end intersect the outer bending portion 22 of the first S spring 21A and the outer bending portion 22 in the left-right direction, respectively. And between the extended portions 28A of the connecting wires 28. Specifically, in the second engaging portions 43D and 53C, the extending portions 43P and 53P pass between the outer bent portion 22 and the extending portion 28A in the left-right direction.

  The first engaging portions 42, 52 and the second engaging portions 43, 53 are assembled in the direction in which the first engaging portions 42, 52 are engaged with the side frame 11, and the second engaging portions 43, 53. Is different from the assembly direction in the case of engaging the first support member 20. Specifically, as shown in FIG. 10A, the assembling direction in the case of engaging the first engaging portion 42 with the first extending portion 18A of the rod member 18 is a downward direction. On the other hand, the assembling directions in the case of engaging the second engaging portion 43 with the outer bent portion 22 of the first S spring 21A are directions substantially toward the outer side (right side) in the left-right direction and are different from each other. Further, as shown in FIG. 11, although the assembling direction in the case of engaging the first engaging portion 52 with the first extending portion 19A of the rod member 19 is a direction toward the inner side (right side) in the left-right direction. On the other hand, the assembling directions in the case of engaging the second engaging portion 53 with the outer bent portion 22 of the first S spring 21A are directions toward the outer side (left side) in the left-right direction and are different from each other.

  As shown in FIGS. 10 (a), (b) and FIG. 11, the left and right second support members 30 respectively have a second engagement portion 43 when viewed from a predetermined one direction (in the present embodiment, the vertical direction). , 53, and has a through hole. Specifically, the second portion 41B of the support portion 41 has a second through hole 44B as a through hole overlapping with the second engaging portions 43B and 43C (only the second engaging portion 43C is shown). In addition, the second portion 41B has a third through hole 44C as a through hole overlapping with the second engaging portions 43A and 43D (only the second engaging portion 43D is shown). Further, the second portion 51B of the support portion 51 has a through hole 54 overlapping with the second engaging portions 53A to 53C (only the second engaging portion 53B is shown). The third through holes 44C and the through holes 54 are substantially fan-shaped holes that overlap with the second hooking portions 43Q and 53Q of the second engaging portions 43A, 43D, 53A to 53C when viewed in the vertical direction, and penetrate vertically It is formed to be. In the present embodiment, the left and right second support members 30 (the third support member 40 and the fourth support member 50) are respectively molded by pouring resin in a mold having a cavity corresponding to the shape and solidifying the resin. There is. The "predetermined one direction" corresponds to the die-cutting direction.

  As shown in FIG. 3, the left and right second support members 30 are disposed at a position closer to the front side than the cover member 60 in a state of being attached to the side frame 11 and the first support member 20. Further, as shown in FIG. 6 (only the third support member 40 is shown), the left and right second support members 30 are disposed such that the rear end thereof overlaps the cover member 60 as viewed in the left-right direction. Specifically, the second support member 30 is a cover member in a state in which the rear end portion of the second support member 30 is positioned inside and the front end portion of the inner cover portion 61 of the cover member 60 is positioned outside in the left-right direction. It is arranged overlapping with 60.

  Further, as shown in FIGS. 10A and 11, the lower end of the second support member 30 is located above the lower end of the cover member 60. Specifically, in the third support member 40, the lower end of the second rib 45B formed in the support portion 41 is positioned above the lower end of the inner cover portion 61, and the fourth support member 50 is the second support member 51. The lower end of the portion 51 </ b> B is located above the lower end of the inner cover portion 61. Further, the lower end portion of the second support member 30 is located below the first support member 20. Specifically, in the second support member 30, the second portions 41B and 51B of the support portions 41 and 51 are located below the first S spring 21A.

  Further, as shown in FIG. 10A, in the right second support member 30 (third support member 40), the support portion 41 is disposed to face the inside of the first actuator 70 in the left-right direction. In other words, the first actuator 70 is located between the right side frame 11 and the support portion 41 of the third support member 40 in the left-right direction. As shown in FIG. 12, the first through holes 44A formed in the third support member 40 are disposed to face the projection 72A of the first actuator 70 in the left-right direction.

  The upper end of the third support member 40 is located above the upper end of the first actuator 70. Specifically, in the third support member 40, the upper end of the first engagement portion 42 is located above the upper end of the connection portion 72B of the first actuator 70. Further, as shown in FIG. 4, the first engaging portion 42 is disposed at a position where a portion thereof overlaps with the connecting portion 72B of the first actuator 70 when viewed from the upper side. In other words, the first engagement portion 42 is disposed at a position where a portion thereof covers a portion of the connection portion 72B of the first actuator 70 from above.

As shown in FIGS. 3 and 12, the seat cushion S1 further includes a blower 91 and a duct 92, and the air blown from the blower 91 is directed from the seating surface (upper surface) to the seated person through the duct 92. It is configured to blow out.
The blower 91 is, for example, a sirocco fan and is disposed below the front frame 12.

  The duct 92 is made of a resin sheet or the like and has flexibility. The duct 92 is disposed below the first support member 20 and is connected to the blower 91. The duct 92 is provided with a first tube 92A, a second pipe 92B disposed above the first support member 20, and the first duct 92A. It has a connection pipe portion 92C connecting the pipe portion 92A and the second pipe portion 92B. The duct 92 is provided such that the second pipe portion 92B is embedded in a cushion pad (not shown), and the connection pipe portion 92C and the first pipe portion 92A are provided so as to extend from the cushion pad. The duct 92 places the first pipe 92A into the second through hole 44B of the third support member 40 from the top to the bottom, and arranges the lower end of the first pipe member 92A. It is provided by connecting to the device 91. The connection pipe portion 92 </ b> C is disposed in a state where it passes through the second through hole 44 </ b> B of the third support member 40. As described above, in the present embodiment, the second through holes 44B function as holes for passing the duct 92 which is a member different from the third support member 40.

  According to the embodiment described above, the second support member 30 is disposed to face the inside of the right first actuator 70 in the left-right direction, and the first actuator 70 includes the right side frame 11 and the second support member 30. The first support 70 can be covered by the second support member 30 because the second support member 30 is positioned therebetween. Thereby, the first actuator 70 can be protected by the second support member 30.

  In addition, since the support portion 41 of the second support member 30 on the right has the through hole 44, the presence or absence of the first actuator 70, the attachment state, and the like can be easily confirmed from the through hole 44.

  In addition, since the through hole 44 includes the first through hole 44A disposed so as to face the protrusion 72A of the first actuator 70, the second support member 30 is bent when a person sits on the vehicle seat S or the like. At this time, interference between the protrusion 72A of the first actuator 70 and the second support member 30 can be suppressed.

  Further, since the second through hole 44B for passing the duct 92 is provided as the through hole 44, the space in the sheet can be effectively used. Further, for example, as compared with the case where the duct is disposed to avoid the second support member 30, the second support member 30 and the duct 92 can be disposed compactly, so that the enlargement of the sheet can be suppressed.

  Further, since the second support member 30 has the rib 45 formed around the through hole 44, the rigidity of the second support member 30, particularly around the through hole 44, can be secured.

  Further, since the through hole 44 is disposed between the pair of second engaging portions 43A and 43D in the front-rear direction, for example, the through holes are disposed outside the pair of second engaging portions 43A and 43D in the front-rear direction As compared with the case where the second support member 30 is used, it is possible to suppress the second support member 30 from being enlarged. Thereby, the enlargement of the sheet can be suppressed.

  Further, since the second engaging portions 43B and 43C are further provided between the pair of second engaging portions 43A and 43D, the second supporting member 30 can be used as the first supporting member 20 by the second engaging portions 43A to 43D. It can be attached firmly. Further, since the second engaging portions 43B and 43C are disposed in the same range as the through hole 44 in the front-rear direction, for example, all the second engaging portions are disposed in front of or behind the through hole 44 As compared with the case, the second support member 30 can be prevented from increasing in size. Thereby, the enlargement of the sheet can be suppressed.

  Further, since the upper end of the second support member 30 is positioned above the upper end of the first actuator 70, the second support member 30 can protect a wide range of the first actuator 70.

  Further, since the first engagement portion 42 is disposed at a position overlapping the connection portion 72B of the first actuator 70 when viewed from the upper side, the connection of the first actuator 70 is made by the first engagement portion 42 of the second support member 30 The part 72B can be protected.

  Further, the second support member 30 is disposed at a position closer to the front side than the cover member 60, and the rear end portion is disposed so as to overlap the cover member 60 when viewed from the left and right direction. The second support member 30 and the cover member 60 can be compactly arranged as compared with the case where the support member and the cover member are arranged side by side in the front-rear direction. Thereby, the enlargement of the sheet can be suppressed.

  Further, since the assembling direction of the first engaging portions 42, 52 with respect to the side frame 11 and the assembling direction of the second engaging portions 43, 53 with respect to the first support member 20 are different, the second support member 30 is a side. Detachment from the frame 11 and the first support member 20 can be suppressed.

  In addition, since the rod member 18 has the first extending portion 18A engaged with the first engaging portion 42 and the pair of second extending portions 18B in the front and rear direction, the first engaging portion 42 moves in the back and forth direction It is regulated by the pair of second extending portions 18B, and it becomes difficult to move back and forth with respect to the first extending portions 18A. Further, since the rod member 19 is such that the first extending portion 18A engaged with the first engaging portion 52 is inclined with respect to the front-rear direction, the first engaging portion 52 corresponds to the first extending portion 19A. It becomes difficult to move back and forth. Thereby, in each of right and left, it can control that the 2nd support member 30 shifts back and forth.

  Further, in particular, the engaging surfaces 43R and 53R of the second engaging portions 43 and 53 have a shape conforming to the outer bending portion 22 of the S spring 21 and are engaged with the outer bending portion 22. The attachment rigidity of the second support member 30 to the S spring 21 of the first support member 20 can be improved.

  In addition, since the second engaging portions 43 and 53 have the second hooking portions 43Q and 53Q located on the upper side of the first extending portions 18A and 19A of the rod members 18 and 19, the load on the second support member 30 is applied from above When hooking occurs, the first hooking portions 42A and 52A are hooked on the rod members 18 and 19 of the side frame 11, and the second hooking portions 43Q and 53Q are hooked on the first S spring 21A constituting the first support member 20. Thus, the second support member 30 can be prevented from being detached from the side frame 11 and the first support member 20.

  In addition, since the second engaging portions 43 and 53 pass between the outer bending portion 22 of the first S spring 21A and the extending portion 28A of the connecting wire 28, the second supporting member 30 is from the first supporting member 20. It is possible to suppress the disengagement.

  Further, since the assembling direction of the second engaging portion 43A with respect to the first S spring 21A and the assembling direction of the second engaging portions 43B to 43D with respect to the first S spring 21A are different, the second support member 30 serves as the first support. It can suppress releasing from the member 20.

  Further, since the second support member 30 has the through holes 44B and 44C overlapping with the second engaging portions 43 and 53 and the through holes 54 when viewed from a predetermined one direction, the second support member 30 made of resin is made of a mold. When using and molding, it is possible to die-cut in a direction along a predetermined one direction. Thereby, for example, the second support member 30 made of resin can be easily and inexpensively manufactured without using a slide type or the like.

  In addition, since the lower end portion of the second support member 30 is positioned lower than the first support member 20, when a load is applied to the first support member 20 from above, the first engaging portion 43 or 53 performs the first operation. The lateral end of the support member 20 can be supported from below. This makes it difficult for the left and right end portions of the first support member 20 to sink downward. In this case, when a person sits on the vehicle seat S, the upper surface of the first S spring 21A is directed obliquely upward inside in the left-right direction, and the side portions of the buttocks and thighs of the seated person are the first S spring 21A and the first S (2) Since the support member 30 can support it so as to sandwich it from the outside, the side portions of the buttocks and thighs of the seat occupant can be supported more strongly than in the case where the upper surface of the first S spring 21A does not face diagonally upward. As a result, the pressure around the ischiate of the seated person is relatively lowered, and blood circulation around the ischial is less likely to deteriorate, so fatigue can be reduced even when sitting for a long time.

  In addition, since the lower end of the second support member 30 is positioned above the lower end of the cover member 60, the second support member 30 can be configured to be compact. Thereby, the enlargement of the sheet can be suppressed.

  As mentioned above, although one embodiment of the invention was described, the present invention is not limited to the above-mentioned embodiment. About a specific structure, it can change suitably in the range which does not deviate from the meaning of invention as follows.

  For example, in the embodiment described above, the left rod member 19 is configured to be inclined with respect to the front-rear direction so that the front end of the first extension 19A is positioned inside in the left-right direction with respect to the rear end The configuration is not limited, and the rear end of the first extending portion 19A may be inclined with respect to the front-rear direction so as to be positioned inside in the left-right direction with respect to the front end. Moreover, in the said embodiment, although the left and right rod members 18 and 19 were asymmetrical configurations, it is not limited to this, A symmetrical configuration may be sufficient. For example, both left and right rod members may have the same configuration as the rod member 18, and both left and right rod members may have the same configuration as the rod member 19. Further, the vehicle seat may have a configuration in which the first engagement portion of the second support member directly engages with the plate-like side frame main body without including the rod member.

  Moreover, in the said embodiment, although the cover member 60 was a structure which covers the left-right direction inner side and upper side of the rear end part of the side frame 11, it is not limited to this. For example, the cover member may be configured to cover the rear side in addition to the inner side and the upper side in the lateral direction of the rear end portion of the side frame. In addition, the cover member may be configured to further cover the outside in the left-right direction of the rear end portion of the side frame. Further, the cover member may be configured to cover only the inner side in the left-right direction of the rear end portion of the side frame. In other words, the cover member may be configured to cover at least the inner side in the left-right direction of the rear end portion of the side frame.

  In the above embodiment, the actuator protected by the second support member is the actuator (first actuator 70) for driving the tilt mechanism, but the invention is not limited thereto. For example, the height mechanism is driven. It may be an actuator. Further, the actuator may be a motor or a pump for driving the lumbar support device. Moreover, in the said embodiment, although the actuator protected by the 2nd support member was arrange | positioned on the right side, you may be arrange | positioned on the left side. Moreover, you may each arrange | position on the left and right both sides.

  Further, in the embodiment, the second through hole 44B of the right second support member 30 is disposed so as to straddle the bent portion 41C between the first portion 41A and the second portion 41B of the support portion 41. It is not limited to this, for example, the 2nd penetration hole may be arranged only in one of the 1st portion and the 2nd portion. Further, in the above embodiment, the duct 92 is illustrated as a member other than the second support member, which is disposed through the second through hole 44B, but the invention is not limited thereto. For example, a wire or the like may be used. . Moreover, you may arrange | position through a several type member in a 2nd through-hole.

  Moreover, in the said embodiment, although the rib 45 was illustrated as a reinforcement part of thickness, it is not limited to this, For example, a boss | hub (protrusion) etc. may be sufficient as the reinforcement part of thickness. Further, the thick reinforcing portion may not be formed in a rib shape or a boss shape, and may be configured as a portion having a thicker plate thickness than the other portions. Moreover, in the said embodiment, although the assembly direction of the 1st engaging part 42, 52 and the assembly direction of the 2nd engaging part 43, 53 were the structures which differ, it is not limited to this, For example, an assembly The directions may be the same. Moreover, in the said embodiment, although the 2nd support member 30 made from resin which has the plate-shaped support parts 41 and 51 was illustrated, it is not limited to this, For example, even if the 2nd support member is not plate-shaped I do not care. As an example, the second support member may have a configuration in which a metal wire is bent and formed.

  Moreover, in the said embodiment, although the 1st support member 20 was comprised including the S spring 21 and the connection wire 28, it is not limited to this, For example, a 1st support member does not contain a connection wire, S The spring may not be connected. The number of second S springs 21B may be one. In the above embodiment, the first S spring 21A is exemplified as a wire member constituting the first support member, but the wire member may be an S spring if it can be engaged with the engaging portion of the second support member. You don't have to.

  Moreover, in the said embodiment, although the front frame 12 consisting of a metal plate and the rear frame 13 consisting of a pipe material were illustrated as a pair of connection frame, it is not limited to this. For example, the pair of connecting frames may be a frame in which both are made of a pipe material, or a frame in which both are made of a metal plate. Moreover, in the said embodiment, although the side frame 11 which consists of metal plates was illustrated, it is not limited to this, For example, the frame which consists of pipe materials may be sufficient as a side frame.

  Moreover, in the said embodiment, although the vehicle seat S mounted in the motor vehicle was illustrated as a vehicle seat, it is not limited to this, The seat mounted in vehicles other than a car, for example, rail cars, ships, aircraft etc. It may be

  In addition, each element described in the above-described embodiment and modification may be implemented in any combination.

11 side frame 11A side frame main body 12 front frame 13 rear frame 18 rod member 18A first extending portion 18B second extending portion 19 rod member 19A first extending portion 20 first support member 21 S spring 24 outer bent portion 28 Connecting wire 28A Extension portion 30 Second support member 42, 52 First engagement portion 42A, 52A First hook portion 43 (43A to 43D), 53 (53A to 53C) Second engagement portion 43Q, 53Q Second hook Part 44B Second through hole 44C Third through hole 54 Through hole 60 Cover member S Vehicle seat

Claims (11)

With left and right side frames, which are spaced apart from each other,
A first support member disposed between the left and right side frames for supporting the seat occupant;
Left and right second support members disposed on the left and right sides of the first support member and supporting the seated person with the first support member;
And left and right cover members covering at least the left and right direction inner side of the rear end portion of the side frame;
The vehicle seat according to claim 1, wherein the second support member is disposed at a position closer to the front side than the cover member, and a rear end portion thereof is overlapped with the cover member when viewed from the left-right direction.   The said 2nd support member has a 1st engaging part engaged with the said side frame, and a 2nd engaging part engaged with the said 1st supporting member, The said 1st support member of Claim 1 characterized by the above-mentioned. Vehicle seat.   The first engaging portion and the second engaging portion engage the assembling direction when engaging the first engaging portion with the side frame, and engage the second engaging portion with the first support member. The vehicle seat according to claim 2, characterized in that the assembly direction is different from that of the assembly direction. The side frame has a plate-like side frame main body, and a rod member fixed to the side frame main body, having a first extension extending in the front and rear direction,
The first engaging portion is engaged with the first extending portion,
The rod member is
A pair of second extending portions extending in a direction intersecting the first extending portion from front and rear ends of the first extending portion;
Or
4. The device according to claim 2, wherein one of the front end and the rear end of the first extension portion is inclined with respect to the front-rear direction so as to be positioned inside in the left-right direction with respect to the other. Vehicle seat. It has a pair of connecting frames which are disposed to be separated in the front and rear direction and connect the left and right side frames,
The first support member includes an S-spring extending forward and backward while alternately bending left and right, and constructed to bridge the pair of connection frames.
The said 2nd engaging part has a shape which followed the bending part of the said S spring, It has engaged with the said bending part, The said, 2nd aspect is characterized by the above-mentioned. Vehicle seat. The first engaging portion has a first hooking portion positioned above the portion of the side frame with which the first engaging portion engages.
The said 2nd engaging part has a 2nd hook part located above the part which the said 2nd engaging part of the said 1st support member engages, The 2nd Claim 5 characterized by the above-mentioned. The vehicle seat according to item 1 or 2. It has a pair of connecting frames which are disposed to be separated in the front and rear direction and connect the left and right side frames,
The first support member extends back and forth while alternately bending left and right, and includes a plurality of S springs arranged side by side across the pair of connection frames and a connection wire connecting the plurality of S springs.
The second engaging portion may pass between the bending portion of the S spring and a portion extending in the front-rear direction of the connection wire crossing the bending portion in the left-right direction. A vehicle seat according to any one of the preceding claims. The second engagement portion includes a third engagement portion and a fourth engagement portion,
The third engaging portion and the fourth engaging portion are assembled directions in which the third engaging portion is engaged with the first support member, and the fourth engaging portion is used as the first support member. The vehicle seat according to any one of claims 2 to 7, characterized in that the assembly direction is different from that in the case of engagement with the seat.   The said 2nd support member consists of resin, and it has a through hole which overlaps with the said 2nd engaging part, seeing from a predetermined one direction, The 2nd from Claim 8 characterized by the above-mentioned. Vehicle seat.   The vehicle seat according to any one of claims 2 to 9, wherein a lower end portion of the second support member is located below the first support member.   The vehicle seat according to any one of claims 1 to 10, wherein a lower end of the second support member is located above a lower end of the cover member.

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