JP2021183493A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which can inhibit enlargement of the seat.SOLUTION: A vehicle seat includes: left and right side frames 11 which are disposed at a spacing from one another in a lateral direction; a first support member 20 which is disposed between the left and right side frames 11 and supports a seating person; left and right second support members 30 which are disposed at left and right sides of the first support member 20 and support the seating person with the first support member 20; and left and right cover members 60 which cover at least the inner side of rear end parts of the side frames 11 as seen in the lateral direction. Each second support member 30 is disposed at a position located closer to the front side than the cover member 60 and is disposed overlapping with the cover member 60 at rear end parts when viewed from the lateral direction.SELECTED DRAWING: Figure 2

Description

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

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

Japanese Unexamined Patent Publication No. 2016-117406 (FIGS. 4 and 5) JP-A-2015-20986 (Fig. 1)

By the way, when both the inclined plate and the cover member are provided inside the cushion frame, the seat cushion (seat) may become large.

Therefore, an object of the present invention is to provide a vehicle seat capable of suppressing an increase in the size of the seat.
Another object of the present invention is to prevent the member supporting the seated person from coming off.
Another object of the present invention is to prevent the member supporting the seated person from shifting back and forth.
Another object of the present invention is to improve the mounting rigidity of the member that supports the seated person.
Another object of the present invention is to easily and inexpensively manufacture a member that supports a seated person.
Another object of the present invention is to reduce the feeling of fatigue even when sitting for a long time.

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

According to such a configuration, for example, the second support member and the cover member can be arranged more compactly as compared with the case where the second support member and the cover member are arranged side by side in the front-rear direction, so that the size of the seat can be increased. Can be suppressed.

In the vehicle seat described above, the second support member is configured to have a first engaging portion that engages with the side frame and a second engaging portion that engages with the first support member. Can be done.

In the vehicle seat described above, the first engaging portion and the second engaging portion have an assembly direction when the first engaging portion is engaged with the side frame and the second engaging portion. The configuration may be different from the assembly direction when engaging with the first support member.

According to this, it is possible to prevent the second support member from coming off from the side frame and the first support member.

In the vehicle seat described above, the side frame has a plate-shaped side frame main body and a rod member having a first extending portion extending in the front-rear direction and fixed to the side frame main body. The 1 engaging portion is engaged with the first extending portion, and the rod member is a pair of first rod members extending from the front and rear ends of the first extending portion in a direction intersecting with the first extending portion. It may have two extending portions, or may be configured to be inclined in the front-rear direction so that one of the front end and the rear end of the first extending portion is located inward in the left-right direction with respect to the other.

According to this, since the first engaging portion becomes difficult to move back and forth with respect to the first extending portion, it is possible to prevent the second support member from shifting back and forth.

The vehicle seats described above are arranged apart from each other in the front-rear direction, and include a pair of connecting frames for connecting the left and right side frames. The second engaging portion includes an S spring erected on the connecting frame of the S spring, and has a shape that imitates the bent portion of the S spring, and can be configured to be engaged with the bent portion.

According to this, it is possible to improve the mounting rigidity of the second support member with respect to the S spring of the first support member.

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

According to this, when a load is applied to the second support member from above, the first hooking portion is caught on the side frame and the second hooking portion is caught on the first support member, so that the second support member is on the side frame and the second. 1 It is possible to prevent the support member from coming off.

The vehicle seats described above are arranged apart from each other in the front-rear direction, and include a pair of connecting frames for connecting the left and right side frames. The second engaging portion includes a plurality of S springs arranged side by side erected on the connecting frame of the above and a connecting wire connecting the plurality of S springs, and the second engaging portion includes a bent portion of the S spring and a bending portion of the S spring in the left-right direction. It may be configured to pass between the bent portion and the portion extending in the front-rear direction of the connecting wire intersecting with the bent portion.

According to this, it is possible to prevent the second support member from coming off from the first support member.

In the vehicle seat described above, the second engaging portion includes a third engaging portion and a fourth engaging portion, and the third engaging portion and the fourth engaging portion are the third engaging portion. The assembly direction when the first support member is engaged with the first support member and the assembly direction when the fourth engaging portion is engaged with the first support member can be different from each other.

According to this, it is possible to prevent the second support member from coming off from the first support member.

In the vehicle seat described above, the second support member is made of resin and may have a through hole that overlaps with the second engaging portion when viewed from a predetermined direction.

According to this, when the second support member made of resin is molded by using a mold, it can be die-cut in a direction along a predetermined direction. Therefore, for example, the resin-made second support member can be formed without using a slide mold or the like. 2 The support member can be manufactured easily and inexpensively.

In the vehicle seat described above, the lower end portion of the second support member may be configured to be located below the first support member.

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

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

According to this, since the second support member can be made into a compact structure, it is possible to suppress the increase in size of the seat.

According to the present invention, it is possible to suppress the increase in size of the sheet.

Further, according to the present invention, it is possible to prevent the second support member from coming off because the assembling direction of the first engaging portion and the assembling direction of the second engaging portion are different.

Further, according to the present invention, the second support member is displaced back and forth by providing the second extending portion before and after the first extending portion of the rod member or by inclining the first extending portion. 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 into a shape that follows the bent portion of the S spring and engaging the second engaged portion with the bent portion.

Further, according to the present invention, by providing the first hooking portion in the first engaging portion and the second hooking portion in the second engaging portion, it is possible to prevent the second support member from coming off.

Further, according to the present invention, by arranging the second engaging portion through between the bent portion of the S spring and the portion extending in the front-rear direction of the connecting wire, it is possible to prevent the second support member from coming off. can.

Further, according to the present invention, it is possible to prevent the second support member from coming off because the assembling direction of the third engaging portion and the assembling direction of the fourth engaging portion are different.

Further, according to the present invention, the second support member made of resin has a through hole that overlaps with the second engaging portion when viewed from a predetermined direction, so that the second support member can be manufactured easily and inexpensively. can.

Further, according to the present invention, by configuring the lower end portion of the second support member to be located below the first support member, it is possible to reduce the feeling of fatigue even when sitting for a long time.

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

It is a figure which shows the vehicle seat which concerns on embodiment. It is a figure which shows the cushion frame. It is a figure which looked at the cushion frame, the 1st support member, the 2nd support member and the cover member from the upper side. FIG. 3 is an enlarged view showing the vicinity of the second support member on the right side of FIG. FIG. 3 is an enlarged view showing the vicinity of the second support member on the left side of FIG. It is the figure which looked at the vicinity of the 2nd support member on the right from the inside in the left-right direction. It is a figure which shows the vicinity of the 1st actuator in an enlarged manner. It is a figure (a), (b) which shows the 2nd support member on the right. It is a figure (a), (b) which shows the 2nd support member on the left. 4A and 4B are a WW sectional view (a) and an XX sectional view (b) of FIG. FIG. 5 is a cross-sectional view taken along the line ZZ of FIG. It is a cross-sectional view of YY of FIG.

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

As shown in FIG. 2, a cushion frame F1 constituting the skeleton of the seat cushion S1 is built in the seat cushion S1. 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 or leather.

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 connecting frames.
The left and right side frames 11 are arranged apart from each other on the left and right. Each side frame 11 is mainly composed of a plate-shaped side frame main body 11A which is long in the front-rear direction and is made of a metal plate. Back frames (not shown) constituting the skeleton of the seat back S2 are rotatably attached to the rear ends 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 arranged apart from each other in the front-rear direction.
The front frame 12 is a so-called pan frame made of a metal plate, and connects the front end portions of the left and right side frame main bodies 11A (side frame 11) to each other. The front frame 12 is provided with four spring fastening portions 12A arranged side by side on the left and right sides.
The rear frame 13 is made of a metal pipe material, and connects the rear ends of the left and right side frame main bodies 11A (side frames 11) to each other. The rear frame 13 is provided with four spring fastening portions 13A arranged side by side on the left and right sides.

The cushion frame F1 is supported by a pair of slide mechanisms 15 arranged apart from each other on the left and right sides. The left and right slide mechanisms 15 include a lower rail 15A fixed to the floor of the vehicle and an upper rail 15B engaged with the lower rail 15A so as to be slidable back and forth. The cushion frame F1 is fixed to the upper rail 15B and can slide back and forth 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 that supports the seated person from below via a cushion pad (not shown), and is arranged 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 alternately bending left and right. Each S spring 21 has a plurality of outer bending portions 22 that bend in a substantially arc shape so as to be convex toward the outside in the left-right direction, and a plurality of outer bending portions 22 that bend in a substantially arc shape so as to be convex toward the inside in the left-right direction. It has an inner bent portion 23 and a plurality of connecting portions 24 that extend substantially linearly to connect the outer bent portion 22 and the inner bent portion 23. In the present embodiment, the S spring 21 includes two first S springs 21A and two second S springs 21B as wire members. The first S springs 21A are arranged apart from each other on the left and right, and the second S springs 21B are arranged side by side between the left and right first S springs 21A. The front end of each of the first S spring 21A and the second S spring 21B is hooked on the spring hooking portion 12A of the front frame 12, and the rear end portion is hooked on the spring hooking portion 13A of the rear frame 13. It is erected on the front frame 12 and the rear frame 13.

The connecting 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 a 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 FIGS. 4 and 5, the left and right extending portions 28A, which are portions extending in the front-rear direction of the connecting wire 28, are arranged so as to intersect the outer bending portion 22 of one of the first S springs 21A, respectively. .. The outer bent portion 22 intersecting with the extending portion 28A has an end portion on the outer side in the left-right direction arranged on the outer side in the left-right direction with respect to the extending portion 28A.

As shown in FIG. 2, the left and right cover members 60 are members that cover the rear ends 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 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, each part will be described below with reference to the right cover member 60.

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

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 F1, and is arranged inside the right side frame 11 in the left-right direction. Further, the second actuator 80 is an actuator for driving a height mechanism for adjusting the height of the cushion frame F1, and is arranged 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 gearbox 72. The motor 71 is a motor capable of switching the rotation direction, and the gear box 72 accommodates a plurality of gears (not shown) that reduce the rotational driving force of the motor 71 and transmit it to the pinion gear 73. The gear box 72 has a protruding portion 72A protruding inward in the left-right direction at the rear end portion. The gear box 72 is fixed to the motor 71 by a screw 79 at the protrusion 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 the end of the electric wire 74 for supplying electric power to the motor 71 is connected to the connection portion 72B.

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

The upper end portion of the front link 16 is rotatably coupled to the tilt link 75, and the lower end portion of the front link 16 is rotatably coupled to the front portion of the upper rail 15B. Further, the lower end portion of the rear link 17 is rotatably coupled to the rear portion 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. Is combined with. The height of the cushion frame F1 can be adjusted by driving the second actuator 80 (see FIG. 2) to rotate the rear link 17 back and forth.

As shown in FIG. 3, the left and right second support members 30 are members that support the seated person together with the first support member 20, and are made of resin. The second support member 30 is arranged 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 arranged on the right side of the first support member 20, and a fourth support member 50 arranged on the left side of the first support member 20.
As shown in FIG. 8A, the third support member 40 (second support member 30 on the right) includes a support portion 41, a first engagement portion 42 as a mounting portion, and a plurality of second engagement portions. It has 43 and. Further, as shown in FIG. 9A, the fourth support member 50 (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 portions 41 and 51 are portions that support the seated person and are formed in a substantially plate shape. The support portions 41 and 51 have a first portion 41A and 51A and a second portion 41B and 51B. The first portions 41A and 51A are inclined and extended so as to be positioned upward as they go outward in the left-right direction, and the second portions 41B and 51B extend inward in the left-right direction from the lower ends 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 to the left from the lower end of the first portion 41A. Further, in the support portion 51, the first portion 51A extends obliquely upward to the 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 arranged near the center in the front-rear direction of the upper part of the first portion 41A, and is formed so as to penetrate substantially left and right. On the other hand, the second through hole 44B is arranged so as to straddle the bent portion 41C between the first portion 41A and the second portion 41B, penetrates substantially 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 that is longer in the front-rear direction 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. Is also located on the rear side. In this embodiment, the support portion 51 of the fourth support member 50 is not formed with a through hole corresponding to the first through hole 44A and the second through hole 44B.

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 in FIG. 8A, the first rib 45A is formed on the front side (seat side) surface of the support portion 41. Specifically, the first rib 45A protrudes from the vicinity of the bent portion 41C and extends substantially to the left and right 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 45A is formed around the through hole 44. Specifically, the first rib 45A is formed on both the front and rear sides of the second through hole 44B, respectively.

As shown in FIG. 8B, the second rib 45B and the third rib 45C are formed on the back side (opposite side to the seater side) of the support portion 41. Specifically, the second rib 45B protrudes from the back surface of the second portion 41B and extends long in the front-rear direction. A plurality of second ribs 45B are formed side by side. On the other hand, the third rib 45C protrudes from the back surface of the first portion 41A and is formed in a substantially honeycomb shape. The second rib 45B and the third rib 45C are formed around the through hole 44. Specifically, the second rib 45B is formed close to the inside of the second through hole 44B in the left-right direction, and the third rib 45C is mainly on 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 55A is formed on the front surface 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 to the left and right 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. 9B, the fifth rib 55B is formed on the back surface of the support portion 51. Specifically, the fifth rib 55B protrudes from the back surface 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 engaging portion 42, respectively. 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 has 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 a direction intersecting with the first extending portion 18A, specifically, outward in the left-right direction. Further, the third extending portion 18C extends substantially downward from the end on the lateral side in the left-right direction of the second extending portion 18B. In the rod member 18, a pair of third extending portions 18C are fixed to the outer surface of the right side frame body 11A in the left-right direction by welding or the like near the center of the right side frame body 11A in the front-rear direction.

As shown in FIG. 10A, in the third support member 40, the first engaging portion 42 engages with the first extending portion 18A of the right rod member 18. The first engaging portion 42 is formed in a hook shape with an open lower side 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 above 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 extending portion 19A extending substantially back and forth, a front rod portion 19B located on the front side of the first extending portion 19A, and a rear side of the first extending portion 19A. It has a rear rod portion 19C located at. The first extending portion 19A extends in an inclined direction in the front-rear direction so that the front end of the first extending portion 19A is located inward in the left-right direction with respect to the rear end when viewed from above. In other words, the first extending portion 19A is inclined and extends so as to be located inward in the left-right direction toward the front side. In the rod member 19, the front rod portion 19B and the rear rod portion 19C are arranged in the left-right direction of the left side frame main body 11A so that the first extending portion 19A is arranged near the center in the front-rear direction of the left side frame main body 11A. It is fixed to the outer surface by welding or the like.

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

As shown in FIGS. 10 (a) and 10 (b) and FIG. 11, the second engaging portions 43 and 53 are portions for attaching the second support member 30 to the first support member 20. 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. Has been done.

The second engaging portions 43, 53 are the extending portions 43P, 53P extending upward from the front surface of the second portions 41B, 51B, and the second extending portions 43P, 53P extending outward in the left-right direction from the upper ends of the extending portions 43P, 53P. It has hooking portions 43Q and 53Q. The second hooking portions 43Q and 53Q are the outer bending portions 22 of the first S spring 21A (the portions with which the second engaging portions 43 and 53 of the first support member 20 are engaged) among the second engaging portions 43 and 53. It is a part located on the upper side of.

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

As shown in FIG. 4, the second engaging portion 43 of the third support member 40 includes the second engaging portion 43A, the second engaging portion 43B, the second engaging portion 43C, and the second engaging portion 43D. , The second engaging portion 43A, the second engaging portion 43B, the second engaging portion 43C, and the second engaging portion 43D are arranged side by side in this order from the front side. Further, the second engaging portions 43A and 43D are arranged apart from each other in the front-rear direction, and the second engaging portions 43B and 43C are arranged between the second engaging portions 43A and 43D. Further, the second engaging portion 43A is arranged at the front end portion of the second portion 41B, and the second engaging portion 43D is arranged at the rear end portion of the second portion 41B. Further, the second engaging portion 43A is arranged in front 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 hole 44A and the second through hole 44B are arranged between the second engaging portions 43A and 43D (a pair of first wire engaging portions) in the front-rear direction.

Further, the second engaging portion 43B is arranged in front of the first through hole 44A, and the second engaging portion 43C is arranged behind the first through hole 44A. In other words, the first through hole 44A is arranged 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 arranged in the same range as the second through hole 44B which is long in the front-rear direction. In other words, the second engaging portions 43B, 43C and the second through hole 44B are arranged at the same front-rear position. Furthermore, the second engaging portions 43B and 43C and the second through hole 44B are arranged so as to be arranged side by side.

The second engaging portion 43A and the second engaging portions 43B to 43D other than the second engaging portion 43A are assembled when the second engaging portion 43A is engaged with the outer bending portion 22 of the first S spring 21A. The mounting direction is different from the mounting direction when the second engaging portions 43B to 43D are engaged with the outer bent portion 22 of the first S spring 21A. Specifically, the second engaging portion 43A is formed so that the engaging surface 43R faces diagonally rearward on the outer side in the left-right direction as a whole, and the second hooking portion 43Q extends diagonally backward on the outer side in the left-right direction. The second engaging portions 43B to 43D are formed so that the engaging surface 43R faces outward in the left-right direction as a whole, and the second hooking portion 43Q extends outward in the left-right direction. As a result, when the second engaging portion 43A is engaged with the outer bent portion 22, the assembling direction is a direction diagonally backward on the outer side in the left-right direction, whereas the second engaging portions 43B to 43D are on the outside. The assembling direction when engaging with the bent portion 22 is a direction toward the outside in the left-right direction, and is different from each other. In this embodiment, one of the second engaging portions 43A and the second engaging portions 43B to 43D corresponds to the "third engaging portion", and the other corresponds to the "fourth engaging portion".

As shown in FIG. 5, in the second engaging portion 53 of the fourth support member 50, the second engaging portion 53 includes the second engaging portion 53A, the second engaging portion 53B, and the second engaging portion 53C. The second engaging portion 53A, the second engaging portion 53B, and the second engaging portion 53C are arranged side by side in this order from the front side. Further, the second engaging portions 53A and 53C are arranged apart from each other in the front-rear direction, and the second engaging portion 53B is arranged between the second engaging portions 53A and 53C. Further, the second engaging portion 53A is arranged at the front end portion of the second portion 51B, the second engaging portion 53B is arranged near the center in the front-rear direction of the second portion 51B, and the second engaging portion 53C is arranged. It is arranged at the rear end of the second portion 51B.

In each of the second engaging portions 53A to 53C, the engaging surface 53R is formed so as to face outward in the left-right direction as a whole, and the second hooking portion 53Q extends outward in the left-right direction. As a result, when the second engaging portions 53A to 53C are engaged with the outer bent portion 22 of the first S spring 21A, the assembling directions are all in the left-right direction outward and are the same as each other.

As shown in FIGS. 4 and 5, the rearmost engaged portions 43D and 53C intersect the outer bent portion 22 of the first S spring 21A and the outer bent portion 22 in the left-right direction, respectively. It passes between the extending portion 28A of the connecting wire 28 and the connecting wire 28. Specifically, in the second engaging portions 43D and 53C, the extending portions 43P and 53P pass between the outer bending 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 case where the first engaging portions 42, 52 are engaged with the side frame 11, and the second engaging portions 43, 53. The configuration is different from the assembly direction when the first support member 20 is engaged with the first support member 20. Specifically, as shown in FIG. 10A, the assembly direction when the first engaging portion 42 is engaged with the first extending portion 18A of the rod member 18 is a downward direction. On the other hand, when the second engaging portion 43 is engaged with the outer bent portion 22 of the first S spring 21A, the assembling direction is a direction toward the outer side (right side) in the substantially left-right direction, which is different from each other. Further, as shown in FIG. 11, when the first engaging portion 52 is engaged with the first extending portion 19A of the rod member 19, the assembling direction is toward the inside (right side) in the left-right direction. On the other hand, when the second engaging portion 53 is engaged with the outer bent portion 22 of the first S spring 21A, the assembling direction is toward the outside (left side) in the left-right direction and is different from each other.

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

As shown in FIG. 3, the left and right second support members 30 are arranged at positions 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 arranged so that their rear ends overlap with the cover member 60 when viewed from the left and right directions. Specifically, the cover member 30 has the rear end portion of the second support member 30 located inside and the front end portion of the inner cover portion 61 of the cover member 60 located outside in the left-right direction. It is arranged so as to overlap 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 on the support portion 41 is located above the lower end of the inner cover portion 61, and the fourth support member 50 is the second support portion 51. The lower end of the portion 51B 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 arranged so as to face the inner side in the left-right direction of the first actuator 70. 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 hole 44A formed in the third support member 40 is arranged so as to face the protruding portion 72A of the first actuator 70 in the left-right direction.

Further, 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 engaging portion 42 is located above the upper end of the connecting portion 72B of the first actuator 70. Further, as shown in FIG. 4, a part of the first engaging portion 42 is arranged at a position where it overlaps with the connecting portion 72B of the first actuator 70 when viewed from above. In other words, the first engaging portion 42 is arranged at a position where a part thereof covers a part of the connecting 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 to the seated person from the seating surface (upper surface) through the duct 92. It is configured to blow out.
The blower 91 is, for example, a sirocco fan, and is arranged below the front frame 12.

The duct 92 is made of a resin sheet or the like and has flexibility. The duct 92 has a first pipe portion 92A arranged below the first support member 20 and connected to the blower 91, a second pipe portion 92B arranged above the first support member 20, and a first one. It has a connecting pipe portion 92C connecting the pipe portion 92A and the second pipe portion 92B. The duct 92 is provided so that the second pipe portion 92B is embedded in a cushion pad (not shown), and the connecting pipe portion 92C and the first pipe portion 92A extend from the cushion pad. In the duct 92, the first pipe portion 92A is passed through the second through hole 44B of the third support member 40 from top to bottom and arranged under the first support member 20, and the end portion of the first pipe portion 92A is blown. It is provided by connecting to the device 91. The connection pipe portion 92C is arranged in a state of being passed through the second through hole 44B of the third support member 40. As described above, in the present embodiment, the second through hole 44B functions as a hole for passing the duct 92, which is a member different from the third support member 40.

According to the present embodiment described above, the second support member 30 is arranged to face the inside of the right first actuator 70 in the left-right direction, and the first actuator 70 is the right side frame 11 and the second support member 30. Since it is located in between, the first actuator 70 can be covered by the second support member 30. Thereby, the first actuator 70 can be protected by the second support member 30.

Further, since the support portion 41 of the second support member 30 on the right has a through hole 44, the presence / absence of the first actuator 70, the mounting state, and the like can be easily confirmed from the through hole 44.

Further, since the through hole 44 has the first through hole 44A arranged so as to face the protruding portion 72A of the first actuator 70, the second support member 30 bends due to a person sitting on the vehicle seat S or the like. At that time, it is possible to prevent the protruding portion 72A of the first actuator 70 from interfering with the second support member 30.

Further, since the through hole 44 has the second through hole 44B for passing the duct 92, the space in the sheet can be effectively used. Further, for example, as compared with the case where the duct is arranged so as to avoid the second support member 30, the second support member 30 and the duct 92 can be arranged more compactly, so that it is possible to suppress the increase in size of the seat.

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

Further, since the through hole 44 is arranged between the pair of second engaging portions 43A and 43D in the front-rear direction, for example, the through hole is arranged outside the pair of second engaging portions 43A and 43D in the front-rear direction. It is possible to prevent the second support member 30 from becoming larger than in the case where the size is increased. As a result, it is possible to suppress the increase in size of the sheet.

Further, since the second engaging portions 43B and 43C are further provided between the pair of second engaging portions 43A and 43D, the second engaging portions 43A to 43D make the second supporting member 30 into the first supporting member 20. Can be firmly attached. Further, since the second engaging portions 43B and 43C are arranged in the same range as the through hole 44 in the front-rear direction, for example, all of the second engaging portions are arranged in front of or behind the through hole 44. Compared with the case, it is possible to prevent the second support member 30 from becoming larger. As a result, it is possible to suppress the increase in size of the sheet.

Further, since the upper end of the second support member 30 is located 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 engaging portion 42 is arranged at a position overlapping the connecting portion 72B of the first actuator 70 when viewed from above, the first engaging portion 42 of the second support member 30 connects the first actuator 70. The portion 72B can be protected.

Further, since 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 is arranged so as to overlap the cover member 60 when viewed from the left-right direction, for example, the second support member 30 is arranged. The second support member 30 and the cover member 60 can be arranged more compactly as compared with the case where the support member and the cover member are arranged side by side in the front-rear direction. As a result, it is possible to suppress the increase in size of the sheet.

Further, since the assembling direction of the first engaging portions 42 and 52 with respect to the side frame 11 and the assembling direction of the second engaging portions 43 and 53 with respect to the first support member 20 are different, the second support member 30 is on the side. It is possible to prevent the frame 11 and the first support member 20 from coming off.

Further, since the rod member 18 has a first extending portion 18A to which the first engaging portion 42 engages and a pair of front and rear second extending portions 18B, the first engaging portion 42 can move back and forth. It is regulated by a pair of second extending portions 18B, and it becomes difficult to move back and forth with respect to the first extending portion 18A. Further, in the rod member 19, since the first extending portion 18A with which the first engaging portion 52 is engaged is inclined with respect to the front-rear direction, the first engaging portion 52 is attached to the first extending portion 19A. On the other hand, it becomes difficult to move back and forth. As a result, it is possible to prevent the second support member 30 from shifting back and forth on each of the left and right sides.

Further, since the engaging surfaces 43R and 53R of the second engaging portions 43 and 53 have a shape following the outer bent portion 22 of the S spring 21 and are engaged with the outer bent portion 22, the second engaging portion 43, 53. It is possible to improve the mounting rigidity of the second support member 30 with respect to the S spring 21 of the first support member 20.

Further, since the second engaging portions 43 and 53 have the second hooking portions 43Q and 53Q located above the first extending portions 18A and 19A of the rod members 18 and 19, a load is applied to the second support member 30 from above. When the hook is applied, 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. As a result, it is possible to prevent the second support member 30 from coming off from the side frame 11 and the first support member 20.

Further, since the second engaging portions 43 and 53 pass between the outer bent portion 22 of the first S spring 21A and the extending portion 28A of the connecting wire 28, the second support member 30 is connected to the first support member 20. It can be suppressed from coming off.

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 is the first support. It is possible to prevent the member 20 from coming off.

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

Further, since the lower end portion of the second support member 30 is located below the first support member 20, when a load is applied to the first support member 20 from above, the second engaging portions 43 and 53 first. The left-right end of the support member 20 can be supported from below. As a result, the left-right end portion of the first support member 20 is less likely to sink downward. Then, when a person sits on the vehicle seat S, the upper surface of the first S spring 21A faces diagonally upward in the left-right direction, and the side portions of the buttocks and thighs of the seated person are placed on the first S spring 21A and the second spring 21A. Since the support member 30 can support the first S spring 21A so as to be sandwiched from the outside, the side portions of the buttocks and thighs of the seated person can be strongly supported as compared with the case where the upper surface of the first S spring 21A does not face diagonally upward. As a result, the pressure around the ischium of the seated person is relatively reduced, and the blood circulation around the ischium is less likely to deteriorate, so that the feeling of fatigue can be reduced even when sitting for a long time.

Further, since the lower end of the second support member 30 is located above the lower end of the cover member 60, the second support member 30 can be made compact. As a result, it is possible to suppress the increase in size of the sheet.

Although one embodiment of the invention has been described above, the present invention is not limited to the above embodiment. The specific configuration can be appropriately changed as described below without departing from the spirit of the invention.

For example, in the above-described embodiment, the left rod member 19 is configured to be inclined in the front-rear direction so that the front end of the first extending portion 19A is located inward 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 located inward in the left-right direction with respect to the front end. Further, in the above-described embodiment, the left and right rod members 18 and 19 have a left-right asymmetrical configuration, but the configuration is not limited to this, and a left-right symmetrical configuration may be used. For example, both the left and right rod members may have the same configuration as the rod member 18, or both the left and right rod members may have the same configuration as the rod member 19. Further, the vehicle seat may be configured such that the first engaging portion of the second support member directly engages with the plate-shaped side frame main body without providing the rod member.

Further, in the above-described embodiment, the cover member 60 is configured to cover the inner side and the upper side in the left-right direction of the rear end portion of the side frame 11, but the present invention is not limited to this. For example, the cover member may be configured to cover the rear end of the side frame in addition to the inside and the top in the left-right direction. Further, the cover member may be configured to further cover the rear end portion of the side frame on the outside in the left-right direction. Further, the cover member may be configured to cover only the inside of the rear end portion of the side frame in the left-right direction. In other words, the cover member may be configured to cover at least the inside of the rear end portion of the side frame in the left-right direction.

Further, in the above-described embodiment, the actuator protected by the second support member is an actuator for driving the tilt mechanism (first actuator 70), but the present invention is not limited to this, and for example, the height mechanism is driven. It may be an actuator for. Further, it may be an actuator having a motor, a pump, or the like for driving the lumbar support device. Further, in the above-described embodiment, the actuator protected by the second support member is arranged on the right side, but may be arranged on the left side. Further, they may be arranged on both the left and right sides.

Further, in the above embodiment, the second through hole 44B of the right second support member 30 is arranged so as to straddle the bent portion 41C between the first portion 41A and the second portion 41B of the support portion 41. Not limited to this, for example, the second through hole may be arranged in only one of the first portion and the second portion. Further, in the above embodiment, the duct 92 is exemplified as a member different from the second support member arranged through the second through hole 44B, but the duct 92 is not limited to this, and may be, for example, an electric wire or the like. .. Further, a plurality of types of members may be passed through the second through hole and arranged.

Further, in the above embodiment, the rib 45 is exemplified as the wall thickness reinforcing portion, but the rib 45 is not limited to this, and for example, the wall thickness reinforcing portion may be a boss (projection) or the like. Further, the wall-thickened reinforcing portion may be configured as a portion having a thicker plate thickness than other portions, instead of being rib-shaped or boss-shaped. Further, in the above-described embodiment, the assembling direction of the first engaging portions 42 and 52 and the assembling direction of the second engaging portions 43 and 53 are different, but the present invention is not limited to this, and for example, assembling is not limited to this. The configurations may be the same. Further, in the above embodiment, the resin-made second support member 30 having the plate-shaped support portions 41 and 51 is exemplified, but the present invention is not limited to this, and for example, the second support member may not be plate-shaped. I do not care. As an example, the second support member may have a structure in which a metal wire is bent and formed.

Further, in the above embodiment, the first support member 20 is configured to include the S spring 21 and the connecting wire 28, but the present invention is not limited to this, and for example, the first support member does not include the connecting wire and is S. The configuration may be such that the springs are not connected. There may be one second S spring 21B. Further, in the above embodiment, the first S spring 21A is exemplified as the wire member constituting the first support member, but the wire member is an S spring as long as the engaging portion of the second support member can be engaged. It doesn't have to be.

Further, in the above embodiment, as the pair of connecting frames, the front frame 12 made of a metal plate and the rear frame 13 made of a pipe material are exemplified, but the present invention is not limited thereto. 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. Further, in the above embodiment, the side frame 11 made of a metal plate has been exemplified, but the present invention is not limited to this, and for example, the side frame may be a frame made of a pipe material.

Further, in the above-described embodiment, the vehicle seat S mounted on an automobile is exemplified as a vehicle seat, but the present invention is not limited to this, and the seat is mounted on a vehicle other than an automobile, for example, a railroad vehicle, a ship, or an aircraft. May be.

Further, each element described in the above-described embodiment and modification may be arbitrarily combined and carried out.

11 Side frame 11A Side frame body 12 Front frame 13 Rear frame 18 Rod member 18A 1st extension part 18B 2nd extension part 19 Rod member 19A 1st extension part 20 1st support member 21 S spring 24 Outer bending part 28 Connecting wire 28A Extension part 30 Second support member 42, 52 First engagement part 42A, 52A First hook part 43 (43A to 43D), 53 (53A to 53C) Second engagement part 43Q, 53Q Second hook Part 44B 2nd through hole 44C 3rd through hole 54 through hole 60 Cover member S Vehicle seat

Claims (1)

The left and right side frames that are separated from each other to the left and right,
A first support member arranged between the left and right side frames to support the seated person, and
Left and right second support members arranged on the left and right sides of the first support member and supporting the seater together with the first support member,
The left and right cover members that cover at least the inside in the left-right direction of the rear end portion of the side frame are provided.
The second support member is arranged at a position closer to the front side than the cover member, and the rear end portion thereof is arranged so as to overlap the cover member when viewed from the left-right direction.

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