JP7011153B2 - Vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat that can be switched between a seated state when an occupant is seated and a stored state in which the seat cushion moves from the seated state to the front side and the lower side and is arranged near the floor.

As a vehicle seat, Patent Document 1 states that the seat is placed on the front floor by superimposing the seat back on the seat cushion and rotating the support legs forward, as well as the state when the occupant is seated. The seating seat of the vehicle that can be switched to the stored state is disclosed. In this technique, a cushioning member is arranged on the floor side surface of the seat frame, and the cushioning member abuts on the front floor to support the seat in the stored state.

JP-A-2007-055566 (FIGS. 1 and 2)

By the way, in the prior art, since the shape of the cushioning member is formed according to the shape of the front floor, the support structure of the seat in the stored state depends on the shape of the floor of the vehicle which is not a component of the seat. There's a problem. Therefore, there is a possibility that the posture of the seat in the stored state may change depending on the shape of the floor, and it is necessary to prepare a cushioning member having a different shape for each shape of the floor.

Therefore, an object of the present invention is to provide a vehicle seat capable of realizing a seat support structure in a stored state regardless of the shape of the floor.
Another object of the present invention is to stably support a seat in a stored state.
Another object of the present invention is to improve the mounting rigidity of the link and the cushioning member.
Another object of the present invention is to make the bracket for attaching the link and the cushioning member a compact structure.
Further, it is an object of the present invention to make the bracket a simple structure.
Another object of the present invention is to improve workability when switching from a seated state to a stored state.
Another object of the present invention is to improve workability when the seat is attached to the floor.
Another object of the present invention is to prevent the cushioning member from coming off.

In order to achieve the above-mentioned object, the vehicle seat of the present invention has a seated state when the occupant is seated and a stored state in which the seat cushion is moved to the front side and the lower side from the seated state and is arranged near the floor. A vehicle seat that can be switched to the above, the cushion frame constituting the seat cushion frame, the base member fixed to the floor, and the upper end portion rotatably coupled to the front portion of the cushion frame. A link having a lower end rotatably coupled to the base member, and a cushioning member provided on the cushion frame and in contact with the base member when switching from the seated state to the retracted state are provided. The base member has a front coupling portion to which the lower end portion of the link is rotatably coupled, and a front extending portion extending forward from the position of the front coupling portion, and the front extending portion is the front extending portion. It is characterized by having a contact portion with which the cushioning member comes into contact when the seated state is switched to the stored state.

According to such a configuration, it is possible to realize a seat support structure in a stored state, which does not depend on the shape of the floor.

In the vehicle seat described above, the link and the cushioning member are provided on the left and right sides of the cushion frame, respectively, and the left and right cushioning members are arranged outside the left and right links in the left-right direction. Can be done.

According to this, since the distance between the left and right cushioning members can be widened, the seat in the stored state can be stably supported.

The vehicle seat described above may include a bracket fixed to the cushion frame and rotatably connected to the upper end of the link, and the cushioning member may be fixed to the bracket.

In the vehicle seat described above, the bracket includes a first wall, a second wall and a third wall arranged in order in the front-rear direction, a fourth wall connecting the first wall and the lower ends of the second wall, and the first wall. It has two walls and a fifth wall that connects one ends of the third wall in the left-right direction, and the first wall, the second wall, and the upper ends of the third wall are fixed to the cushion frame. The upper end of the link may be rotatably coupled to the fifth wall, and the cushioning member may be fixed to the fourth wall.

According to this, since the rigidity of the fourth wall and the fifth wall can be improved, the mounting rigidity of the cushioning member and the link attached to these can be improved.

In the vehicle seat described above, the upper end portion of the link may be arranged in the left-right direction on the side of the fifth wall opposite to the side on which the cushioning member is arranged.

According to this, the bracket can be made into a compact structure while suppressing the interference between the link and the cushioning member.

In the vehicle seat described above, the lower end surface of the third wall may be configured to be an inclined surface located upward from one end to the other end in the left-right direction.

In the vehicle seat described above, the cushion frame may include a partially bent pipe frame, and the bracket may be fixed to a linearly extending portion of the pipe frame.

According to this, since it is not necessary to form the bracket in a shape that follows the shape of the bent portion of the pipe frame, the bracket can be made into a simple and compact configuration.

In the vehicle seat described above, the front extending portion may have a fixing portion fixed to the floor in front of the contact portion.

According to this, by fixing the base member to the floor with the fixing portion in front of the abutting portion, the position of the abutting portion with respect to the floor is stabilized, so that the seat in the stored state can be stably supported.

The vehicle seat described above can be configured to switch from the seated state to the stored state in conjunction with the operation of the seat back tilting forward and overlapping the seat cushion.

According to this, it is possible to improve workability when switching the seat from the seated state to the stored state.

The vehicle seat described above includes a back frame constituting the frame of the seat back, and the base member includes a rear joint portion to which the back frame is bonded, and an anterior joint portion and the rear side extending to the front and rear. It can be configured to have a connecting portion connecting the connecting portions.

According to this, since both the cushion frame and the back frame can be connected to the base member, workability when mounting the seat on the floor can be improved.

In the vehicle seat described above, the rear portion of the cushion frame is rotatably coupled to the back frame, and the back frame is the rear coupling portion below the rotation axis of the cushion frame and the back frame. It can be configured to be rotatably coupled to.

In the vehicle seat described above, the cushioning member may be configured to be attached to the cushion frame from below.

According to this, since the load applied to the seat in the stored state is along the mounting direction of the cushioning member, it is possible to prevent the cushioning member from coming off the cushion frame.

According to the present invention, it is possible to realize a seat support structure in a stored state, which does not depend on the shape of the floor.

Further, according to the present invention, by arranging the left and right cushioning members on the outer side in the left-right direction with respect to the left and right links, the seat in the stored state can be stably supported.

Further, according to the present invention, the cushioning member is fixed to the fourth wall connecting the first wall and the second wall of the bracket, and the link is connected to the fifth wall connecting the second wall and the third wall. Therefore, the mounting rigidity of the cushioning member and the link can be improved.

Further, according to the present invention, by arranging the link on the side of the fifth wall opposite to the side where the cushioning member is arranged, the bracket can be compactly configured while suppressing the interference between the link and the cushioning member. can do.

Further, according to the present invention, by fixing the bracket to the linearly extending portion of the pipe frame, the bracket can be made into a simple and compact configuration.

Further, according to the present invention, by providing the fixing portion of the front extending portion in front of the abutting portion, the seat in the stored state can be stably supported.

Further, according to the present invention, the seat back is configured to switch from the seated state to the stored state in conjunction with the operation of tilting forward and overlapping with the seat cushion, so that workability when switching the seat from the seated state to the stored state is performed. Can be improved.

Further, according to the present invention, since the base member has the front joint portion, the rear joint portion and the connection portion, the workability when the seat is attached to the floor can be improved.

Further, according to the present invention, since the cushioning member is attached to the cushion frame from below, it is possible to prevent the cushioning member from coming off the cushion frame.

It is a perspective view of the vehicle seat which concerns on embodiment, and is a figure (a) which shows a sitting state, and a figure (b) which shows a stored state. It is a perspective view of a seat frame. It is an enlarged perspective view of the base member, the link and the cushioning member provided on the left side of a cushion frame. It is a perspective view of a bracket, a link and a cushioning member. It is a perspective view of the bracket fixed to the cushion pipe frame. It is the figure which looked at the cushion pipe frame, the cushioning member and the base member from the upper side. It is the figure which looked at the right-and-left cushioning member and a link from the front side. It is a side view of a seat frame, a base member, a link and a cushioning member, and is a figure (a) which shows a seated state, and a figure (b) which shows a stored state.

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 / rear, left / right, and up / down as seen from the person (occupant) sitting on the seat.

As shown in FIG. 1A, the vehicle seat of the present embodiment is a vehicle seat S mounted on an automobile, and includes a seat cushion S1, a seat back S2, and a headrest S3. The vehicle seat S has a configuration that can be switched between the seated state shown in FIG. 1 (a) and the stored state shown in FIG. 1 (b). The seated state is a state in which the seat back S2 stands up with respect to the seat cushion S1, that is, a state in which the occupant sits down. Further, the stored state is a state in which the seat back S2 falls forward and overlaps with the seat cushion S1, and the seat cushion S1 moves from the seated state to the front side and the lower side and is arranged near the floor FL of the vehicle.

The vehicle seat S is composed of a seat frame F as shown in FIG. 2 covered with a pad material made of urethane foam or the like and a skin material made of cloth or leather. The seat frame F includes a cushion frame F1 that constitutes the frame of the seat cushion S1 and a back frame F2 that constitutes the frame of the seat back S2.

The cushion frame F1 includes a cushion pipe frame 11 as a pipe frame, left and right rear side frames 12, and a rear frame 13.
The cushion pipe frame 11 is a substantially U-shaped frame in which a part of a metal pipe material is bent, and is a front frame that connects the left and right front side frames 11A extending substantially forward and backward and the front ends of the front side frames 11A. It has 11B.
The rear side frame 12 is made of sheet metal and is formed in a substantially L-shape in side view. The rear portion of the front side frame 11A is connected to the front portion of the rear side frame 12 by welding or the like.
The rear frame 13 connects the left and right rear side frames 12 to each other.

The back frame F2 includes a back pipe frame 21, left and right lower side frames 22, a lower frame 23, and a back panel 24.
The back pipe frame 21 is a substantially U-shaped frame in which a part of a metal pipe material is bent, and is an upper frame that connects the left and right upper side frames 21A extending substantially vertically and the upper ends of the upper side frames 21A. It has 21B. A pair of support brackets 25 for attaching the headrest S3 are fixed to the upper frame 21B by welding or the like.
The lower side frame 22 is made of sheet metal and is formed in a long shape that is long in the vertical direction. The lower parts of the left and right upper side frames 21A are connected to the upper part of the lower side frame 22 by welding or the like.
The lower frame 23 is made of sheet metal and connects the left and right lower side frames 22 to each other.

The back panel 24 is made of sheet metal. The back panel 24 is arranged so as to cover the back pipe frame 21, the left and right lower side frames 22 and the lower frame 23 from behind, and is joined to the back pipe frame 21 and the left and right lower side frames 22 by welding or the like. The back panel 24 is formed with a plurality of bead portions 24A that project forward and are recessed when viewed from the rear.

The vehicle seat S includes a base member 30, a link 40, a cushioning member 50, and a bracket 60. The base member 30, the link 40, the cushioning member 50, and the bracket 60 are provided on the left and right sides of the cushion frame F1, respectively. In the present embodiment, the left and right base members 30, the link 40, the cushioning member 50, and the bracket 60 are formed in a substantially symmetrical shape. Therefore, in the following, the configuration will be described in detail mainly with reference to the base member 30, the link 40, the cushioning member 50 and the bracket 60 provided on the left side of the cushion frame F1.

As shown in FIG. 3, the base member 30 is a member fixed to the floor FL of the vehicle and extends long in the front-rear direction. The base member 30 is made of sheet metal and has a base portion 31 arranged along the floor FL and a side wall 32 formed so as to rise upward from an inner end in the left-right direction of the base portion 31. Further, the base member 30 has a front joint portion 34, a front extension portion 35, a rear joint portion 36, a rear extension portion 37, and a connection portion 38.

The front joint portion 34 is a portion to which the lower end portion of the link 40 is connected, and is provided on the side wall 32.
The front extending portion 35 is a portion extending forward from the position of the front connecting portion 34, and has a contact portion 35A and a front fixing portion 35B as a fixing portion. The contact portion 35A is a portion to which the cushioning member 50 abuts when the vehicle seat S is switched from the seated state to the retracted state, and is provided on the upper surface of the base portion 31 on the front side of the front joint portion 34. There is. The front fixing portion 35B is a portion fixed to the floor FL, and is provided at the front end portion of the base portion 31 in front of the contact portion 35A. The front fixing portion 35B is formed with an insertion hole 35C that penetrates up and down. The front fixing portion 35B (front portion of the base member 30) is fixed to the floor FL by fastening a bolt 91 passed through the insertion hole 35C to a nut 92 (see FIG. 8) welded to the floor FL.

The rear joint portion 36 is a portion to which the lower end portion of the back frame F2 is connected. In the present embodiment, the rear coupling portion 36 is formed by a frame mounting bracket 36B welded to the rear portions of the base portion 31 and the side wall portion 32. The frame mounting bracket 36B is formed by bending a sheet metal in a substantially U-shape in cross-sectional view, and the lower end portion of the back frame F2 is connected to the upper end portion thereof. The rear coupling portion 36 may be integrally formed with the side wall 32 as a part of the side wall 32.
The rear extending portion 37 is a portion extending rearward from the position of the rear connecting portion 36, and has a rear fixing portion 37B. The rear fixing portion 37B is a portion fixed to the floor FL, and is provided at the rear end portion of the base portion 31 behind the rear connecting portion 36. An insertion hole 37C that penetrates up and down is formed in the rear fixing portion 37B. The rear fixing portion 37B (rear portion of the base member 30) is fixed to the floor FL by fastening the bolt 91 passed through the insertion hole 37C to the nut 92 (see FIG. 8) welded to the floor FL.

The connecting portion 38 is a portion that connects the front joint portion 34 and the posterior joint portion 36, and extends in the front-rear direction. Specifically, the connecting portion 38 is composed of a portion of the base portion 31 and the side wall 32 between the front connecting portion 34 and the rear connecting portion 36.

The cushioning member 50 is a member that abuts on the base member 30 to alleviate an impact when the vehicle seat S is switched from the seated state to the stored state, and is made of a member that is softer than the cushion frame F1 and the base member 30. As an example, the cushioning member 50 comprises rubber or resin. As shown in FIG. 4, the cushioning member 50 has a substantially columnar main body portion 51 and a screw 52 protruding upward from the upper surface of the main body portion 51. The cushioning member 50 is fixed to the bracket 60 and is provided on the cushion frame F1 (see FIG. 5) via the bracket 60.

The bracket 60 is made of sheet metal and has a first wall 61, a second wall 62, a third wall 63, a fourth wall 64, and a fifth wall 65.
The first wall 61, the second wall 62, and the third wall 63 are walls formed so as to be substantially orthogonal to the front-rear direction (specifically, the direction in which the front side frame 11A extends), and are specifically front-to-back. , The first wall 61, the second wall 62, and the third wall 63 are arranged side by side from the front to the back. The third wall 63 has an inclined surface 63A whose lower end surface is located upward from one end to the other end in the left-right direction, specifically, from the inner end (right end) to the outer end (left end) in the left-right direction. It has become.

The fourth wall 64 is a wall that connects the lower ends of the first wall 61 and the second wall 62. A cushioning member 50 is fixed to the fourth wall 64. Specifically, the fourth wall 64 has a screw hole 64A penetrating up and down substantially in the center, and the cushioning member 50 is attached by engaging the screw 52 with the screw hole 64A from below. It is fixed to the wall 64.
The fifth wall 65 is a wall that connects one end of the second wall 62 and the third wall 63 in the left-right direction, specifically, one end (right end) in the left-right direction.

As shown in FIG. 5, in the bracket 60, the upper ends of the first wall 61, the second wall 62, and the third wall 63 are fixed to the cushion frame F1 by welding (see the welded portion W). More specifically, as shown in FIG. 6, the bracket 60 is fixed to a linearly extending portion of the cushion pipe frame 11, specifically, the front portion of the front side frame 11A extending substantially straight back and forth. .. In other words, in the present embodiment, the bracket 60 is fixed at a position avoiding the bent portion of the cushion pipe frame 11, specifically, the connecting portion between the front side frame 11A and the front frame 11B.

Returning to FIG. 5, the bracket 60 is attached to the lower surface of the front side frame 11A from bottom to top. Further, as described above, the cushioning member 50 is attached to the fourth wall 64 of the bracket 60 from the bottom to the top (see FIG. 4). Therefore, the cushioning member 50 is attached to the cushion frame F1 from the bottom to the top.

As shown in FIG. 8A, the cushioning member 50 is arranged between the cushion frame F1 and the base member 30 when viewed from the left-right direction. Further, as shown in FIG. 6, the cushioning member 50 is arranged so as to overlap the cushion frame F1 and the base member 30 when viewed from the vertical direction. Further, as shown in FIG. 7, the cushioning member 50 is arranged outside the corresponding link 40 in the left-right direction. As a result, the left and right cushioning members 50 are arranged outside the left and right links 40 so as to sandwich the left and right links 40 in the left and right directions.

As shown in FIG. 3, the link 40 is a substantially vertically long plate-shaped member made of metal. The lower end of the link 40 is rotatably coupled to the base member 30. Specifically, the lower end portion of the link 40 is rotatably coupled to the inside of the front coupling portion 34 provided on the base member 30 in the left-right direction via the first axis A1. Further, as shown in FIGS. 4 and 5, the upper end portion of the link 40 is rotatably coupled to the bracket 60. Specifically, the upper end portion of the link 40 is rotatably connected to the inside of the fifth wall 65 of the bracket 60 in the left-right direction via the second axis A2. As a result, the upper end portion of the link 40 is rotatably coupled to the front portion of the cushion frame F1 via the bracket 60. The upper end portion of the link 40 is arranged in the left-right direction on the side of the fifth wall 65 opposite to the side on which the cushioning member 50 is arranged. Specifically, the cushioning member 50 is arranged on the lateral side (left side) of the fifth wall 65, and the upper end portion of the link 40 is arranged on the lateral side (right side) of the fifth wall 65.

Returning to FIG. 3, the rear portion of the cushion frame F1 is rotatably coupled to the back frame F2. Specifically, in the cushion frame F1, the upper end portion of the rear portion of the rear side frame 12 having a substantially L shape is substantially the center of the lower side frame 22 constituting the back frame F2 in the vertical direction, and the third axis A3 is located inward in the horizontal direction. They are rotatably coupled via.
Further, the back frame F2 is rotatably coupled to the base member 30. Specifically, in the back frame F2, the lower end portion of the lower side frame 22 is rotatably coupled to the inside of the rear side coupling portion 36 provided on the base member 30 in the left-right direction via the fourth axis A4. Since the fourth axis A4 is arranged below the third axis A3, in the present embodiment, the back frame F2 is lower than the third axis A3 which is the rotation axis of the cushion frame F1 and the back frame F2. It is rotatably coupled to the rear coupling portion 36.

Next, the operation and effect of the vehicle seat S according to the present embodiment will be described.
When the seat back S2 is unlocked from the seated state shown in FIG. 8A and the seat back S2 is tilted forward with respect to the seat cushion S1, the back frame F2 rotates forward around the fourth axis A4. Move. As a result, the third axis A3 rotates forward around the fourth axis A4, and the cushion frame F1 moves forward. Further, when the cushion frame F1 moves to the front side, the second axis A2 rotates forward and downward around the first axis A1 so that the link 40 tilts forward around the first axis A1. It moves and the cushion frame F1 moves to the front side and the lower side.

Then, as shown in FIG. 8B, when the cushioning member 50 comes into contact with the abutting portion 35A provided on the front extending portion 35 of the base member 30, the seat cushion S1 of the vehicle seat S is in a seated state. It is arranged closer to the floor FL, and the seat back S2 is switched to a stored state overlapping with the seat cushion S1. As described above, in the present embodiment, the vehicle seat S is configured to switch from the seated state to the stored state in conjunction with the operation in which the seat back S2 falls forward and overlaps with the seat cushion S1.

On the other hand, when the seat back S2 is raised with respect to the seat cushion S1 from the stored state shown in FIG. 8 (b), the back frame F2 rotates upward about the fourth axis A4. As a result, the third axis A3 rotates upward around the fourth axis A4, and the cushion frame F1 moves upward. Further, when the cushion frame F1 moves upward, the second axis A2 rotates upward and rearward with respect to the first axis A1, so that the link 40 rotates so as to rise around the first axis A1. , The cushion frame F1 moves upward and rearward. Then, as shown in FIG. 8A, when the seat back S2 stands up at a predetermined angle with respect to the seat cushion S1, the seat back S2 is locked so as not to fall further backward, and the vehicle seat S becomes , Switch to the seated state.

In the present embodiment, when the seated state is switched to the stored state, the cushioning member 50 is provided not on the floor FL but on the front extending portion 35 of the base member 30 which is a part of the vehicle seat S itself. Since it abuts on the contact portion 35A, it is possible to realize a seat support structure in a stored state, which does not depend on the shape of the floor FL. As a result, for example, the posture of the seat in the stored state does not change according to the shape of the floor FL, so that the posture of the seat in the stored state can be set to a constant posture regardless of the shape of the floor FL. can. Further, since it is not necessary to prepare a cushioning member 50 having a different shape for each shape of the floor FL, it is possible to reduce labor and cost such as inventory management of parts.

Further, since the left and right cushioning members 50 are arranged outside the left and right links 40 in the left-right direction, the distance between the left and right cushioning members 50 can be widened. As a result, the vehicle seat S is switched from the seated state to the stored state, and the left and right cushioning members 50 come into contact with the corresponding base members 30 on the left and right, so that the seat in the stored state can be stably supported.

Further, a fourth wall 64 is provided between the first wall 61 and the second wall 62 of the bracket 60 fixed to the cushion frame F1 so as to connect them, and the second wall 62 is fixed to the cushion frame F1. Since the fifth wall 65 is provided between the and the third wall 63 so as to connect them, the rigidity of the fourth wall 64 and the fifth wall 65 can be improved. Since the cushioning member 50 is fixed to the fourth wall 64 with improved rigidity and the upper end portion of the link 40 is coupled to the fifth wall 65, the mounting rigidity of the cushioning member 50 and the link 40 can be improved. ..

Further, since the upper end portion of the link 40 is arranged on the side of the fifth wall 65 opposite to the side on which the cushioning member 50 is arranged in the left-right direction, interference between the link 40 and the cushioning member 50 can be suppressed. Can be done. Further, the bracket 60 can be made compact because it is not necessary to consider the interference between the link 40 and the cushioning member 50.

Further, since the bracket 60 is fixed to the linearly extending portion (front side frame 11A) of the cushion pipe frame 11, the bracket 60 can be made into a simple and compact configuration. Supplementally, when fixing the bracket to the bent portion of the cushion pipe frame 11, for example, it is necessary to form the bracket in a shape that follows the shape of the bent portion of the cushion pipe frame 11, but in the present embodiment, this is necessary. Since there is no such thing, the bracket 60 can be configured in a simple and compact manner.

Further, since the front extending portion 35 has the front fixing portion 35B in front of the contact portion 35A, the position of the contact portion 35A with respect to the floor FL can be changed by fixing the base member 30 to the floor FL with the front fixing portion 35B. Stabilize. Thereby, for example, rattling of the contact portion 35A can be suppressed. Therefore, the cushion member 50 can stably support the sheet in the stored state in contact with the contact portion 35A.

Further, the vehicle seat S is configured to switch from the seated state to the stored state in conjunction with the operation in which the seat back S2 falls forward and overlaps with the seat cushion S1. Therefore, for example, the seat back is stacked on the seat cushion. It is possible to improve workability when switching the seat from the seated state to the stored state, as compared with the case where the seat cushion is moved to the front side and the lower side after the matching.

Further, since the base member 30 has a front joint portion 34, a rear joint portion 36, and a connection portion 38 extending back and forth to connect the front joint portion 34 and the posterior joint portion 36, the base member 30 has a cushion frame F1. Both of the back frames F2 can be combined. Thereby, for example, as compared with the case where the base member to which the cushion frame F1 is connected and the base member to which the back frame F2 is connected are separately provided, when the base member 30 is fixed to the floor FL, the cushion frame F1 and Since the fixing work can be performed with the back frame F2 stabilized, the workability when the seat is attached to the floor FL can be improved.

Further, since the cushioning member 50 is attached to the cushion frame F1 from the bottom to the top, the load applied to the seat in the stored state is applied to the base member 30 from the top to the bottom so as to follow the mounting direction of the cushioning member 50. It is transmitted. As a result, it is difficult to apply a load in the direction of detaching from the cushion frame F1 to the cushioning member 50, specifically, a load from the front and back or left and right, so that the cushioning member 50 can be prevented from detaching from the cushion frame F1.

Although the embodiments of the invention have been described above, the present invention is not limited to the above embodiments. 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 and right base members 30, the link 40, the cushioning member 50, and the bracket 60 are formed in a substantially symmetrical shape, but the present invention is not limited thereto. For example, the left and right base members do not have to have a symmetrical shape as long as they can exhibit the same effect. The same applies to the left and right links, cushioning members, and brackets.

Further, in the above embodiment, the cushioning member 50 is fixed to the cushion pipe frame 11 made of the pipe material of the cushion frame F1 via the bracket 60, but the present invention is not limited to this. For example, the cushioning member may be fixed to a plate-shaped frame made of sheet metal or the like. Further, in the above embodiment, the left and right shock absorbers 50 are arranged outside the left and right links 40 in the left-right direction, but the present invention is not limited to this, and for example, the left and right shock absorbers 50 are arranged inside the left and right links. Alternatively, it may be arranged at the same position as the left and right links (positions that overlap when viewed from the front-back direction) in the left-right direction. Further, in the above embodiment, two cushioning members 50 are provided on the left and right sides of the cushion frame F1 in total, but the present invention is not limited to this, and for example, only one cushioning member 50 may be provided. Three or more may be provided.

Further, the bracket 60 described in the embodiment is an example of the bracket according to the invention, and is not limited to the embodiment. For example, in the above embodiment, the fifth wall 65 of the bracket 60 is a wall connecting the inner ends of the second wall 62 and the third wall 63 in the left-right direction, but the second wall 62 and the third wall 63 are connected to each other. It may be a wall connecting the outer ends in the left-right direction of the above. Further, in the above embodiment, the bracket 60 is fixed to the linearly extending portion of the cushion pipe frame 11, but may be fixed to, for example, a bent portion of the pipe frame.

Further, in the above embodiment, the vehicle seat S includes an integrated bracket 60 for fixing both the link 40 and the cushioning member 50 to the cushion frame F1, but the present invention is not limited to this. For example, the vehicle seat may separately include a first bracket for fixing the link to the cushion frame and a second bracket for fixing the cushioning member to the cushion frame. Further, the link and the cushioning member may be directly attached to the cushion frame without using a bracket.

Further, the base member 30 described in the embodiment is an example of the base member according to the invention, and is not limited to the embodiment. For example, in the above embodiment, the base member 30 extends straight back and forth, but the present invention is not limited to this, and at least one of the front end portion and the rear end portion of the base member may be bent and extended downward. .. Further, for example, in the case where the front end portion of the base member is bent and extends downward, a fixing portion fixed to the floor may be provided at the front end portion. Further, the vehicle seat may further include a second base member to which the back frame is connected, in addition to the base member (the first base member to which the cushion frame is connected via the link) according to the invention. good.

Further, in the above-described embodiment, the vehicle seat S is configured to switch from the seated state to the stored state in conjunction with the operation in which the seat back S2 falls forward and overlaps with the seat cushion S1, but the present invention is limited to this. However, the operation of the seat back and the operation of the seat cushion may not be linked. For example, the vehicle seat may be configured to tilt the seat back forward and stack it on the seat cushion, and then move the seat cushion from the seated state to the front side and the lower side.

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 Cushion pipe frame 11A Front side frame 30 Base member 34 Front joint 35 Front extension 35A Abutment 35B Front fixing 36 Rear joint 38 Connection 40 Link 50 Cushion 60 Bracket 61 First wall 62 Second Wall 63 3rd wall 63A Inclined surface 64 4th wall 65 5th wall A3 3rd axis F1 Cushion frame F2 Back frame FL Floor S Vehicle seat S1 Seat cushion S2 Seat back

Claims (12)

It is a vehicle seat that can be switched between the seated state when the occupant is seated and the stored state in which the seat cushion moves from the seated state to the front side and the lower side and is arranged near the floor.
The cushion frame constituting the seat cushion frame and
The base member fixed to the floor and
A link whose upper end is rotatably coupled to the front of the cushion frame and whose lower end is rotatably coupled to the base member.
A cushioning member provided on the cushion frame and which comes into contact with the base member when the seated state is switched to the stored state.
A bracket fixed to the cushion frame and rotatably coupled to the upper end of the link .
The base member has a front coupling portion to which the lower end portion of the link is rotatably coupled, and a front extending portion extending forward from the position of the front coupling portion.
The front extending portion has a contact portion with which the cushioning member comes into contact when the seated state is switched to the stored state.
The cushioning member is fixed to the bracket and is fixed to the bracket.
The bracket includes a first wall, a second wall and a third wall arranged in order in the front-rear direction, a fourth wall connecting the first wall and the lower ends of the second wall, and the second wall and the third wall. Has a fifth wall that connects one ends in the left-right direction of
The first wall, the second wall, and the upper ends of the third wall are fixed to the cushion frame.
The upper end of the link is rotatably coupled to the fifth wall.
A vehicle seat characterized in that the cushioning member is fixed to the fourth wall . The vehicle seat according to claim 1 , wherein the upper end portion of the link is arranged on the side of the fifth wall opposite to the side on which the cushioning member is arranged in the left-right direction. It is a vehicle seat that can be switched between the seated state when the occupant is seated and the stored state in which the seat cushion moves from the seated state to the front side and the lower side and is arranged near the floor.
The cushion frame constituting the seat cushion frame and
The base member fixed to the floor and
A link whose upper end is rotatably coupled to the front of the cushion frame and whose lower end is rotatably coupled to the base member.
A cushioning member provided on the cushion frame and which comes into contact with the base member when the seated state is switched to the stored state.
A bracket fixed to the cushion frame and rotatably coupled to the upper end of the link .
The base member has a front coupling portion to which the lower end portion of the link is rotatably coupled, and a front extending portion extending forward from the position of the front coupling portion.
The front extending portion has a contact portion with which the cushioning member comes into contact when the seated state is switched to the stored state.
The bracket includes a first wall, a second wall and a third wall arranged in order in the front-rear direction, a fourth wall connecting the first wall and the lower ends of the second wall, and the second wall and the third wall. A vehicle seat characterized by having a fifth wall connecting one ends in the left-right direction of the above. The link and the cushioning member are provided on the left and right sides of the cushion frame, respectively.
The left and right cushioning members are arranged outside the left and right links in the left-right direction .
The vehicle seat according to any one of claims 1 to 3, wherein the cushioning member is attached to the cushion frame from bottom to top . The invention according to any one of claims 1 to 4, wherein the lower end surface of the third wall is an inclined surface that is located upward from one end to the other end in the left-right direction. Vehicle seat. The cushion frame includes a partially bent pipe frame.
The vehicle seat according to any one of claims 1 to 5 , wherein the bracket is attached to a linearly extending portion of the pipe frame from below . The vehicle seat according to any one of claims 1 to 6 , wherein the front extending portion has a fixing portion fixed to the floor in front of the contact portion. 1 . The vehicle seat described. A back frame constituting the seat back frame is provided.
The back frame includes a back panel made of sheet metal.
The vehicle seat according to claim 8, wherein the back panel is arranged parallel to the surface of the floor to which the base member is fixed when the back panel is in the stored state. A back frame constituting the seat back frame is provided.
The base member is characterized by having a posterior coupling portion to which the back frame is coupled, and a connecting portion extending back and forth on the floor to connect the front coupling portion and the posterior coupling portion. 8 or the vehicle seat according to claim 9. The rear portion of the cushion frame is rotatably coupled to the back frame.
The vehicle seat according to claim 10, wherein the back frame is rotatably coupled to the rear coupling portion below the cushion frame and the rotation axis of the back frame. The vehicle sheet according to any one of claims 1 to 11, wherein the cushioning member has a substantially columnar main body portion and a screw protruding upward from the upper surface of the main body portion. ..

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