JP6776759B2 - Vehicle seat - Google Patents

Description

The present invention relates to vehicle seats used for vehicles such as automobiles, railroad vehicles, ships and aircraft.

For example, the vehicle seat described in Patent Document 1 includes a displacement mechanism that displaces the front end side of the seat pad portion. The seat pad portion is a part of the cushion pad and is a portion that supports the buttocks of the seated person.

JP-A-2009-179192

A side pad portion is usually provided at a portion of the seat pad portion adjacent to the seat width direction. Unlike the seat pad portion, the side pad portion is an immovable pad portion that does not displace even when the displacement mechanism is activated. Then, the present application provides a specific configuration for supporting the side pad portion.

The present application has a seat pad portion (19A) for supporting the buttocks of a seated person, and side pad portions (19B, 19C) provided in a portion adjacent to the seat pad portion (19A) in the seat width direction. The cushion pad (19), the displacement mechanism (21) that displaces the seat front end side of the seat pad portion (19A), and the support member (26) that supports the seat front end side of the side pad portions (19B, 19C). A support member (26) having a planar support portion (27) that comes into surface contact with the side pad portions (19B, 19C) to support the side pad portions (19B, 19C) is provided.

In the present application, since the side pad portion (19B, 19C) is in surface contact with the side pad portion (19B, 19C) to support the side pad portion (19B, 19C), for example, the side pad is made of a wire-shaped member. The side pad portion can be reliably supported as compared with the linear support structure that supports the portions (19B, 19C).

That is, in the linear support structure in which the side pad portion (19B, 19C) is supported by the wire-shaped member, the wire-shaped member and the side pad portion (19B, 19C) are in line contact with each other. Therefore, when a moment centered on the wire-shaped member acts on the side pad portions (19B, 19C), the side pad portions (19B, 19C) may be rotationally displaced so as to roll.

On the other hand, in the present application, since the planar support portion (27) comes into contact with the side pad portion (19B, 19C) in a wider area than the linear support structure, the moment is applied to the side pad portion (19B, 19C). It is possible to prevent the side pad portions (19B, 19C) from being rotationally displaced so as to roll even if As a result, the side pad portion can be reliably supported.

The vehicle seat according to the present application may be configured as follows.
That is, it is desirable that the planar support portion (27) has at least a receiving surface (27A) that can come into surface contact with the side pad portions (19B, 19C) and receive a load in the vertical direction. As a result, a load in the vertical direction can be reliably received.

It is desirable that the planar support portion (27) has a second receiving surface (27B) that can come into surface contact with the side pad portions (19B, 19C) and receive a load in the front-rear direction of the seat. As a result, the side pad portion can be reliably supported.

It is desirable that the planar support portion (27) has a third receiving surface (27C) that can come into surface contact with the side pad portions (19B, 19C) and receive a load in the seat width direction. Thereby, the side pad portion can be supported more reliably.

When the side pad portions (19B, 19C) are provided on the outside and inside in the seat width direction, the outer receiving surface (27L) is in surface contact with the outer pad (19C) from one end side in the seat width direction, and It is desirable that the inner receiving surface (27R) comes into surface contact with the inner pad (19B) from one end side in the seat width direction.

As a result, the side pad portions (19B, 19C) can be reliably supported even when a force in the direction from the other end side to the one end side in the seat width direction acts on the cushion pad (19). Can be done.

The outer receiving surface (27L) is a receiving surface capable of receiving a load in the seat width direction by making surface contact with the outer pad (19C) located outside in the seat width direction of the seat surface pad portion (19A). .. The inner receiving surface (27R) is a receiving surface capable of receiving a load in the seat width direction by making surface contact with the inner pad (19B) located inside the seat surface pad portion (19A) in the seat width direction.

The support member (26) is provided on the tip end side of the tilt arm (22, 23) that swings when the front end side inclination angle of the cushion pad (19) is changed, and the displacement mechanism (21) is provided on the tilt arm. It is preferable to apply the present application to the vehicle seat having (22, 23).

Incidentally, the reference numerals in the parentheses are examples showing the correspondence with the specific configurations and the like described in the embodiments described later, and the present invention is limited to the specific configurations and the like shown in the symbols in the parentheses. It's not something.

It is a perspective view of the vehicle seat 1 which concerns on embodiment of this invention. It is an exploded perspective view of the seat cushion 3 which concerns on embodiment of this invention. It is a perspective view of the cushion pad 19 which concerns on embodiment of this invention. It is an enlarged view of the displacement mechanism 21 and the like which concerns on embodiment of this invention. It is a side view of the tilt arm 22, 23 and the side frame 11, 13 which concerns on embodiment of this invention. It is an enlarged perspective view of the displacement mechanism 21 and the like which concerns on embodiment of this invention. A is a perspective view of the tilt arm 22 according to the embodiment of the present invention. B is an exploded perspective view of the tilt arm 22 according to the embodiment of the present invention. A is a side surface of the tilt arm 22 according to the embodiment of the present invention. B is a top view of the tilt arm 22 according to the embodiment of the present invention. 8A is a cross-sectional view taken along the line AA of FIG. 8A. It is a figure which shows the support structure of the side pad part 19B, 19C which concerns on embodiment of this invention. It is a front end side enlarged perspective view of the tilt arm 22 which concerns on embodiment of this invention. It is a figure which shows the support structure of the side pad part 19B, 19C which concerns on embodiment of this invention. It is a back side perspective view of the front side shield part 31 which concerns on embodiment of this invention. It is a front end side enlarged perspective view of the front side shield part 31 which concerns on embodiment of this invention. It is a figure which shows the support structure of the front side shield part 31 which concerns on embodiment of this invention.

The "embodiment of the invention" described below is an example of an embodiment belonging to the technical scope of the present invention. That is, the matters specifying the invention described in the claims are not limited to the specific configuration, structure, etc. shown in the following embodiments.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The arrows and the like indicating the directions attached to each figure are described in order to make it easier to understand the relationship between each figure. The present invention is not limited to the directions attached to each figure.

At least one member or part described with a reference numeral is provided unless otherwise specified such as "one". That is, two or more of the members may be provided.
(First Embodiment)
In the present embodiment, the vehicle seat according to the present invention is applied to the front seat of an ordinary passenger car. In addition, the direction in the following description means the direction in the state where the vehicle seat according to this embodiment is assembled to the vehicle.

1. 1. Outline of the vehicle seat As shown in FIG. 1, the vehicle seat 1 has at least a seat cushion 3 and a seat back 5. The seat cushion 3 is a portion for supporting the buttocks and the like of the seated person. The seat back 5 is a portion for supporting the back of the seated person, and can swing with respect to the seat cushion 3 in the front-rear direction of the seat.

1.1 Frame structure The back frame 7 shown in FIG. 2 is a frame forming the skeleton of the seat back 5, and is swingably connected to the cushion frame 9. The cushion frame 9 is a frame that constitutes the skeleton of the seat cushion 3.

The back frame 7 has a pair of side frames 7A and 7B, an upper panel (not shown), a lower panel 7C, and the like. The side frames 7A and 7B are frames that extend substantially in the vertical direction and are arranged on both sides in the seat width direction. In the present embodiment, the seat width direction coincides with the left-right direction of the vehicle.

The upper panel extends in the seat width direction and connects the upper end sides of the side frames 7A and 7B. The lower panel 7C extends in the seat width direction and connects the lower end sides of the side frames 7A and 7B.

The pair of side frames 7A and 7B, the upper panel and the lower panel 7C are made of metal, and the 7A to 7C are connected and fixed to each other by a joining means such as welding or a mechanical fastener such as a screw.

The cushion frame 9 has a pair of side frames 11 and 13, a front pipe 15, a rear pipe 17, and the like. The side frames 11 and 13 are frames that extend in the front-rear direction of the seat and are arranged at both ends in the width direction of the seat.

The front pipe 15 connects a pair of side frames 11 and 13 on the seat front side of the cushion frame 9. The rear pipe 17 connects a pair of side frames 11 and 13 on the rear side of the seat of the cushion frame 9.

The pair of side frames 11 and 13 and the front pipe 15 and the rear pipe 17 are connected by a connecting method such as caulking using welding or plastic working. Incidentally, in the present embodiment, the front pipe 15 and the rear pipe 17 are fixed to the side frames 11 and 13 by welding.

The cushion frame 9 is supported by a pair of seat lifters 18. Each seat lifter 18 is arranged on the lower side of each of the side frames 11 and 13, and displaces the cushion frame 9 in the vertical direction.

That is, each seat lifter 18 has a front lifter link 18A, a rear lifter link 18B, a bracket 18C, and the like. The upper end side of the front lifter link 18A and the rear lifter link 18B is swingably connected to the side frames 11 and 13, and the lower end side is swingably connected to the bracket 18C.

The bracket 18C is fixed to the floor panel side of the vehicle via a slide rail (not shown). The slide rail allows the vehicle seat 1 to be displaced in the front-rear direction of the seat and fixes the vehicle seat 1 to the floor panel.

1.2 Cushion structure A back pad 3A (see FIG. 1) is mounted on the front side of the seat of the back frame 7. The back pad 3A is a cushioning material made of a foamed elastic body such as urethane. The surface of the back pad 3A is covered with a skin such as leather.

A cushion pad 19 (see FIG. 2) is attached to the upper side of the cushion frame 9. As shown in FIG. 3, the cushion pad 19 has a seat surface pad portion 19A, side pad portions 19B, 19C, and the like.

The seat pad portion 19A is a cushioning material for supporting the buttocks of the seated person. The side pad portions 19B and 19C are cushioning materials provided at a portion adjacent to the seat surface pad portion 19A in the seat width direction.

The side pad portions 19B and 19C extend in the front-rear direction of the seat at each end of the seat surface pad portion 19A in the seat width direction. The seat pad portion 19A and the pair of side pad portions 19B and 19C are integrally molded products made of urethane or the like.

The vehicle seat 1 according to the present embodiment is a seat on the left side of the front seat of the vehicle. Therefore, the side pad portion 19B located inside the seat pad portion 19A in the seat width direction, that is, on the center side in the vehicle width direction is also referred to as an inner pad 19B.

The side pad portion 19C located on the outer side of the seat pad portion 19A in the seat width direction is also referred to as an outer pad 19C. When the inner pad 19B and the outer pad 19C are generically referred to, they are referred to as side pad portions 19B and 19C.

2. Details of vehicle seat 2.1 Displacement mechanism <Overview of displacement mechanism>
The vehicle seat 1 has a displacement mechanism 21 (see FIG. 4). The displacement mechanism 21 is a mechanism that displaces the seat front end side portion 19D (see FIG. 3) of the seat surface pad portion 19A. Specifically, the displacement mechanism 21 has at least one of a tilt function, an ottoman function, a cushion length variable function, and the like. The displacement mechanism 21 according to the present embodiment has a tilt function and an ottoman function.

The tilt function is a function of shifting the portion 19D in the vertical direction while changing the tilt angle of the cushion pad 19 on the front end side, that is, the tilt angle of the seat front end side portion 19D. The ottoman function is a function for changing the inclination angle of the ottoman 19E (see FIG. 3). The ottoman 19E is a part on which a foot such as a "calf" is placed. The cushion length variable function is a function for changing the seat front-rear length of the seat pad portion 19A by displacing the front edge portion of the seat cushion 3.

In the displacement mechanism 21 according to the present embodiment, when the inclination angle (hereinafter, referred to as a tilt angle) of the seat front end side portion 19D becomes large, the ottoman 19E swings so as to approach horizontal in conjunction with this. On the contrary, when the tilt angle becomes smaller, the ottoman 19E approaches vertically in conjunction with this.

<Displacement mechanism configuration>
As shown in FIG. 4, the displacement mechanism 21 has a pair of tilt arms 22, 23, a tilt panel 24, and the like. As shown in FIG. 5, each of the pair of tilt arms 22 and 23 is swingably connected to the side frames 11 and 13 via the connecting pins C1 and C2, and the connecting pins are connected as shown in FIG. It extends from the C1 and C2 sides to the front side of the seat.

The tilt panel 24 is a plate-shaped member extending in the seat width direction so as to connect the tip ends of the tilt arms 22 and 23 in the extending direction. The front end portion of the seat pad portion 19A is supported by the tilt panel 24. Therefore, when the tilt arms 22 and 23 swing, the tilt angle of the front end portion of the seat pad portion 19A changes in conjunction with the swing.

The front panel 25 is a portion that supports the ottoman 19E. The swing of the pair of tilt arms 22 and 23 is transmitted to the front panel 25 via a link mechanism or a cam mechanism (not shown). Therefore, the ottoman 19E swings with respect to the tilt panel 24 in conjunction with the swing of the pair of tilt arms 22 and 23.

<Structure of tilt arm>
The tilt arm 22 and the tilt arm 23 have the same structure except that they have a symmetrical structure. Hereinafter, the structures of the tilt arms 22 and 23 according to the present embodiment will be described using the tilt arm 22 as an example.

As shown in FIGS. 7A and 7B, the tilt arm 22 includes a connecting arm portion 22A, a tip end side arm portion 22B, and the like. The connecting arm portion 22A has a connecting portion 22C (see FIG. 5) that is swingably connected to the side frame 11 via the connecting pin C1.

The tip end side arm portion 22B is connected and fixed to the tip end side of the connecting arm portion 22A. In the present embodiment, the tip end side arm portion 22B and the connecting arm portion 22A are connected and fixed by welding as shown in FIGS. 8A and 8B.

As shown in FIG. 9, the cross-sectional shape of AA in the connecting and fixing portion 22D of the connecting arm portion 22A and the tip end side arm portion 22B is a closed cross-sectional shape that draws a closed curve. Specifically, the AA cross-sectional shape of the connecting and fixing portion 22D of the connecting arm portion 22A is a substantially C-shaped or J-shaped open cross-sectional shape in which a part is open.

Similarly, the AA cross-sectional shape of the connecting and fixing portion 22D of the tip end side arm portion 22B is a substantially C-shaped or J-shaped open cross-sectional shape in which a part is opened. In the present embodiment, the AA cross section of the connecting arm portion 22A and the AA cross section of the tip end side arm portion 22B both have an open cross-sectional shape in which the side frame 11 side is open.

In the connection fixing portion 22D, that is, in the AA cross section, the first plate material P1 constituting the connecting arm portion 22A and the second plate material P2 forming the tip end side arm portion 22B are overlapped in the plate thickness direction at at least two places. It is connected and fixed with.

Of the two locations, the overlapping direction L1 at the first location WP1 is the direction intersecting the overlapping direction L2 at the second location WP2. Specifically, the overlapping direction L1 at the first location WP1 is substantially parallel to the sheet width direction, and the overlapping direction L2 at the second location WP2 is substantially parallel to the vertical direction.

As shown in FIG. 8A, the welded portion at the first portion WP1 extends in the longitudinal direction (seat front-rear direction) and the vertical direction of the connecting arm portion 22A. As shown in FIG. 8B, the welded portion at the second portion WP2 extends in a direction parallel to the longitudinal direction of the connecting arm portion 22A.

As shown in FIG. 8A, the lower end position 22E of the tip end side arm portion 22B on the tip end side is located vertically downward from the lower end position 22F of the connection fixing portion 22D. In other words, in the tilt arm 22 according to the present embodiment, the vertical dimension becomes larger toward the tip end side in the extension direction, that is, the front end side of the seat.

The bead portions 22G to 22K are ridges or grooves in order to improve the bending rigidity and the torsional rigidity of the tip side arm portions 22B, that is, the tilt arms 22 and 23. The bead portion 22G extends along the outer edges of the tilt arms 22 and 23. The bead portions 22H to 22K are provided at the bent portion of the plate material constituting the tip end side arm portion 22B.

2.2 Support structure of side pad portions Of the side pad portions 19B and 19C, the portion on the front side of the seat is supported by the tilt arms 22 and 23. Hereinafter, the support structure of the side pad portion will be described by taking the tilt arm 22 side (right side of the seat) as an example.

As shown in FIG. 10, the seat front end side of the side pad portion 19B is supported by a support member 26 having a planar support portion 27. The planar support portion 27 is a portion that comes into surface contact with the side pad portion 19B and supports the side pad portion 19B.

That is, as shown in FIG. 11, the planar support portion 27 has at least receiving surfaces 27A to 27C that come into surface contact with the side pad portion 19B. The receiving surface 27A (hereinafter referred to as the first receiving surface 27A) is a surface that can come into surface contact with the side pad portion 19B and receive a load in the vertical direction.

The receiving surface 27B (hereinafter referred to as the second receiving surface 27B) is a surface that can come into surface contact with the side pad portion 19B and receive a load in the front-rear direction of the seat. The second receiving surface 27B according to the present embodiment receives a load in the direction from the front side of the seat to the rear side of the seat.

The receiving surface 27C (hereinafter referred to as the third receiving surface 27C) is a surface that can come into surface contact with the side pad portion 19B and receive a load in the seat width direction. In the present embodiment, as shown in FIG. 12, the third receiving surface 27C on one end side in the seat width direction and the third receiving surface 27C on the other end side in the seat width direction are not symmetrical.

That is, the third receiving surface 27C of the planar support portion 27 (hereinafter referred to as the inner support portion 26A) that makes surface contact with the inner pad 19B is defined as the inner receiving surface 27R, and the planar support portion 27 (hereinafter referred to as the inner support portion 26A) that makes surface contact with the outer pad 19C Hereinafter, when the third receiving surface 27C of the outer support portion 26B) is the outer receiving surface 27L, the respective receiving surfaces 27R and 27L are configured as follows.

The outer receiving surface 27L comes into surface contact with the outer pad 19C from one end side in the seat width direction, and the inner receiving surface 27R comes into surface contact with the inner pad 19B from one end side in the seat width direction. That is, in the present embodiment, the outer receiving surface 27L comes into surface contact with the outer pad 19C from the right side (inside), and the inner receiving surface 27R also comes into surface contact with the inner pad 19B from the right side (inside).

2.2 Shield support structure <Outline of shield>
As shown in FIGS. 1 and 2, the side surface side of the cushion frame 9 is covered with shields 30, 33, and the like. The shield 30 (hereinafter referred to as the front shield 30) covers the seat front side of the cushion frame 9.

The front shield 30 extends in the seat width direction and is attached to the tip side of each of the pair of tilt arms 22 and 23. The front shield 30 according to the present embodiment is fixed to the tilt arms 22 and 23 by fasteners (not shown) such as screws.

The shield 33 (hereinafter referred to as a side shield 33) covers the other end side (the left side in the present embodiment) of the cushion frame 9 in the seat width direction. A side shield (not shown) similar to the side shield 33 is also provided on one end side in the seat width direction (on the right side in this embodiment). Hereinafter, the configuration and support structure of the side shield will be described by taking the left side shield 33 as an example.

Incidentally, the left side shield 33 is provided with an operation unit 40 for changing the inclination angle of the seat back 5 and the position of the seat cushion 3. The side shield 33 on the right side is not provided with an operation unit 40 or the like.

The side shield 33 is configured to include a front shield portion 31, a rear shield portion 32, and the like. The front shield portion 31 is attached to the tilt arm 22 which is a part of the cushion frame 9 and swings integrally with the tilt arm 22.

The rear shield portion 32 is fixed to the cushion frame 9 such as the side frame 11 and is immovable. The rear shield portion 32 according to the present embodiment is fixed to the side frame 11 by a mechanical fastener such as a screw or a mechanical joining method such as a snap fit. The snap fit is an engagement fixing method that utilizes elastic deformation of the rear shield portion 32 or the side frame 11.

<Support structure of front shield>
As shown in FIG. 13, an operation unit 40 is mounted on the back surface side of the front side shield unit 31 by a fixing bracket 41 or the like. The back surface side of the front side shield portion 31 refers to the side frame 11 and the tilt arm 22 side.

The fixing bracket 41 is fixed to the front shield portion 31 by a fastener such as a P screw. Hereinafter, the front side shield portion 31 refers to a portion to which the operation portion 40, the fixing bracket 41, and the like are mounted, as shown in FIG.

Then, as a mounting portion for mounting the front side shield portion 31 on the tilt arm 22, the front side shield portion 31 has a first insertion hole 31A and a second insertion hole 31B shown in FIG. 14, and a second insertion hole 31B shown in FIG. Three protrusions 31C are provided.

As shown in FIG. 15, the tilt arm 22 is provided with a first protrusion 31D inserted into the first insertion hole 31A and a second protrusion 31E inserted into the second insertion hole 31B. As shown in FIG. 11, the first protrusion 31D projects in a direction intersecting the seat width direction.

The second protrusion 31E projects in a direction parallel to the first protrusion 31D. The first protrusion 31D and the second protrusion 31E according to the present embodiment project in the same direction as each other in the front-rear direction of the seat.

Specifically, both the first protrusion 31D and the second protrusion 31E are formed of protruding pieces that protrude from the rear side of the seat toward the front side of the seat and have a plate surface substantially orthogonal to the width direction of the seat. Has been done. Further, the first protrusion 31D is located on the lower side and the front side of the seat with respect to the second protrusion 31E.

Then, in a state where the first protrusion 31D and the second protrusion 31E are inserted into the first insertion hole 31A and the second insertion hole 31B (hereinafter referred to as a shield mounting state), as shown in FIG. 14, the insertion direction. The length L1 is longer than the length L2 in the insertion direction.

The insertion direction length L1 refers to the insertion direction length of the portion of the first protrusion 31D that has been inserted into the first insertion hole 31A. The insertion direction length L2 refers to the insertion direction length of the portion of the second protrusion 31E inserted into the second insertion hole 31B.

In the present embodiment, in order to realize the shield mounting state, the tip position of the first protrusion 31D is located on the advance side in the insertion direction from the tip position of the second protrusion 31E, and the first protrusion The insertion direction length of 31D is longer than the insertion direction length of the second protrusion 31E.

As shown in FIG. 15, guide portions 31G and 31H are provided on the insertion port side (retracting side in the insertion direction) of the first insertion hole 31A and the second insertion hole 31B. The guide portions 31G and 31H are inclined with respect to the insertion direction, and guide the tip of the first protrusion 31D and the tip of the second protrusion 31E to the first insertion hole 31A and the first insertion hole 31A.

Then, in the state where the first protrusion 31D is inserted into the first insertion hole 31A and the state where the second protrusion 31E is inserted into the second insertion hole 31B, the contact surface pressures set in advance in the mutual contact parts are set. Is configured to occur.

The third protrusion 31C is a protrusion that protrudes from the front shield portion 31 toward the tilt arm 22 in the seat width direction. The third protrusion 31C is fitted into a fitting hole 31F (see FIG. 6) provided in the tilt arm 22.

3. 3. Features of the vehicle seat according to the present embodiment 3.1 Support structure of the front shield portion In the present embodiment, the planar support portion 27 that comes into surface contact with the side pad portions 19B and 19C to support the side pad portions 19B and 19C. have. Thereby, for example, the side pad portion can be reliably supported as compared with the linear support structure in which the side pad portions 19B and 19C are supported by the wire-shaped member.

That is, in the linear support structure in which the side pad portions 19B and 19C are supported by the wire-shaped member, the wire-shaped member and the side pad portions 19B and 19C are in line contact with each other. Therefore, when a moment centered on the wire-shaped member acts on the side pad portions 19B and 19C, the side pad portions 19B and 19C may be rotationally displaced so as to roll.

On the other hand, in the present embodiment, since the planar support portion 27 comes into contact with the side pad portions 19B and 19C in a wider area than the linear support structure, a moment acts on the side pad portions 19B and 19C. Also, it is possible to prevent the side pad portions 19B and 19C from being rotationally displaced so as to roll. As a result, the side pad portion can be reliably supported.

The planar support portion 27 has a first receiving surface 27A that can come into surface contact with the side pad portions 19B and 19C and receive a load in the vertical direction. As a result, a load in the vertical direction can be reliably received.

The planar support portion 27 has a second receiving surface 27B that can come into surface contact with the side pad portions 19B and 19C and receive a load in the front-rear direction of the seat. As a result, the side pad portions 19B and 19C can be reliably supported.

The planar support portion 27 has a third receiving surface 27C that can come into surface contact with the side pad portions 19B and 19C and receive a load in the seat width direction. Thereby, the side pad portion can be supported more reliably.

When the side pad portions 19B and 19C are provided on the outer side and the inner side in the seat width direction, the outer receiving surface 27L is in surface contact with the outer pad 19C from one end side in the seat width direction, and the inner receiving surface 27R is Surface contact with the inner pad 19B from one end side in the sheet width direction.

As a result, the side pad portions 19B and 19C can be reliably supported even when a force in the direction from the other end side to the one end side in the seat width direction acts on the cushion pad 19.

That is, since the vehicle seat 1 according to the present embodiment is provided on the left side of the front seat, the seated person who gets on the vehicle is seated on the vehicle seat 1 so as to move from the left side of the vehicle to the right side of the vehicle. .. Therefore, a load in the direction from the left side of the vehicle to the right side of the vehicle acts on the seat cushion 3 including the side pad portions 19B and 19C.

On the other hand, in the present embodiment, the outer receiving surface 27L comes into surface contact with the outer pad 19C from the right side (inside), and the inner receiving surface 27R also comes into surface contact with the inner pad 19B from the right side (inside). The side pad portions 19B and 19C can be reliably supported against the load.

3.2 Shield support structure In the present embodiment, the insertion direction length L1 of the portion of the first protrusion 31D inserted into the first insertion hole 31A is the second insertion hole 31B of the second protrusion 31E. The length of the inserted part in the insertion direction is longer than L2.

As a result, in the present embodiment, the assembling worker or the automatic assembling machine (hereinafter referred to as a worker or the like) inserts the first protrusion 31D and the second protrusion 31E into the first insertion hole 31A and the second insertion hole 31, respectively. By inserting it into the hole 31B, the front shield portion 31 can be assembled to the cushion frame. Since the first protrusion 31D and the second protrusion 31E extend in the direction intersecting the seat width direction, it is possible to prevent the front shield portion 31 from coming off in the seat width direction.

By the way, for example, the fixing portion corresponding to the second protrusion is composed of a wire-shaped member, and the fixed portion corresponding to the second insertion hole is composed of a holding portion that holds the wire so as to sandwich it. Since the assembly workability of the vehicle seat (hereinafter referred to as the wire method) is low, it is difficult to reduce the assembly man-hours.

That is, in the wire method, after inserting the first protrusion into the first insertion hole, the operator or the like bends the shield so as to rotate the shield around the first protrusion side to wire the holding portion. It is necessary to hold it in the mouth. That is, the wire method requires different types of assembling work such as insertion work and holding work, so it is difficult to reduce the assembling man-hours.

On the other hand, in the present embodiment, the operator or the like moves the front shield portion 31 with respect to the cushion frame 9 (tilt arms 22 and 23) in one direction, that is, in a direction intersecting the seat width direction. As a result, the first protrusion 31D and the second protrusion 31E can be inserted and assembled into the first insertion hole 31A and the second insertion hole 31B, respectively.

Therefore, in the vehicle seat 1 according to the present embodiment, it is possible to reduce the assembly man-hours and prevent the front shield portion 31 from coming off in the seat width direction.
In the present embodiment, the first protrusion 31D and the second protrusion 31E project in the front-rear direction of the seat. As a result, by moving the front shield portion 31 in the front-rear direction of the seat (in the present embodiment, the rear side of the seat) with respect to the cushion frame 9, the first protrusion 31D and the second protrusion 31E are first inserted. It can be inserted and assembled into the hole 31A and the second insertion hole 31B.

In the present embodiment, the second protrusion 31E projects in the same direction as the first protrusion 31D, that is, protrudes toward the front side of the seat, so that the front shield portion 31 is located on the rear side of the seat with respect to the cushion frame 9. By moving the first protrusion 31D and the second protrusion 31E, each of the first protrusion 31D and the second protrusion 31E can be easily inserted and assembled.

In the present embodiment, the first protrusion 31D is provided below the second protrusion 31E. As a result, even when a moment with the rotation axis in the front-rear direction of the seat acts on the front shield portion 31, the front shield portion 31 can be reliably fixed.

In this embodiment, the cushion frame 9 has tilt arms 22 and 23. The first protrusions 31D and the second protrusions 31E are provided with the tilt arms 22 and 23, and project from the rear side to the front side in the front-rear direction of the seat. Further, the front shield portion 31 is attached to the front shield portion 31 which has a first insertion hole 31A and a second insertion hole 31B and swings integrally with the tilt arms 22 and 23.

According to the above configuration, the front shield portion 31 can be displaced in conjunction with the swing of the tilt arms 22 and 23, so that the design (appearance) of the front shield portion 31 is suppressed from being impaired. it can.

3.3 Tilt arm structure The tilt arms 22 and 23 according to the present embodiment have a configuration in which the connecting arm portion 22A and the tip end side arm portion 22B are connected and fixed. Therefore, since the connecting arm portion 22A and the tip side arm portion 22B can be molded separately, the tilt arms 22 and 23 can be molded relatively easily regardless of a simple shape or a complicated shape. ..

Further, in the present embodiment, since the connecting and fixing portion 22D of the connecting arm portion 22A and the tip end side arm portion 22B has a closed cross-sectional shape, the bending rigidity and the torsional rigidity of the tilt arms 22 and 23 can be improved. Therefore, in the present embodiment, it is possible to relatively easily mold the tilt arms 22 and 23 even if they have a complicated shape while improving the rigidity of the tilt arms 22 and 23.

In the present embodiment, the overlapping direction L1 at the first location WP1 is a direction intersecting with the overlapping direction L2 at the second location WP2. As a result, the rigidity of the connecting / fixing portion 22D can be reliably improved as compared with the case where the overlapping directions of the two locations are parallel to each other.

In the present embodiment, the overlapping direction L1 at the first location WP1 is substantially parallel to the sheet width direction, and the overlapping direction L2 at the second location WP2 is substantially parallel to the vertical direction. Thereby, the rigidity of the connecting and fixing portion 22D can be effectively and surely improved.

In the present embodiment, the lower end position of the tip end side arm portion 22B on the tip end side is located on the lower side in the vertical direction from the lower end position of the connection fixing portion 22D. In the tilt arm having such a configuration, a large twisting moment is likely to act on the connecting and fixing portion 22D.

However, in the present embodiment, since the connecting and fixing portion 22D of the connecting arm portion 22A and the tip side arm portion 22B has a closed cross-sectional shape, the torsional rigidity of the tilt arms 22 and 23 can be improved, and the above-mentioned torsional moment can be improved. Can be sufficiently countered.

(Other embodiments)
The vehicle seat 1 according to the above-described embodiment has a tilt function and an ottoman function. However, the invention disclosed in the present specification is not limited to this. That is, for example, it can be applied to a vehicle seat having at least one of a tilt function, an ottoman function, and a cushion length variable function, or a vehicle seat not having a displacement mechanism 21.

The vehicle seat 1 according to the above-described embodiment had a planar support portion 27. However, the invention disclosed in the present specification is not limited to this. That is, for example, the planar support portion 27 may be abolished and the side pad portions 19B and 19C may be supported by the linear support portion.

The vehicle seat 1 according to the above-described embodiment has the first receiving surface 27A to the third receiving surface 27C as the surface support portion 27. However, the invention disclosed in the present specification is not limited to this. That is, for example, it may have a configuration having any one receiving surface of the first receiving surface 27A to the third receiving surface 27C, or any two receiving surfaces.

In the above-described embodiment, the outer receiving surface 27L is in surface contact with the outer pad 19C from the right side (inside), and the inner receiving surface 27R is also in surface contact with the inner pad 19B from the right side (inside). .. However, the invention disclosed in the present specification is not limited to this.

That is, for example, (1) the outer receiving surface 27L is in surface contact with the outer pad 19C from the left side (outside), and the inner receiving surface 27R is also in surface contact with the inner pad 19B from the left side (outside), or (2). ) The outer receiving surface 27L may be in surface contact with the outer pad 19C from the right side (inside), and the inner receiving surface 27R may be in surface contact with the inner pad 19B from the left side (outside).

In the above-described embodiment, the support member 26 is provided on the tip side of the tilt arms 22 and 23. However, the invention disclosed in the present specification is not limited to this. That is, for example, the support member 26 may be provided on the rear side of the seat from the tip side of the tilt arms 22 and 23.

In the above-described embodiment, the first protrusion 31D and the second protrusion 31E are inserted into the first insertion hole 31A and the second insertion hole 31B, and the front shield portion 31 (side shield 33) is attached to the cushion frame 9. Was there. However, the invention disclosed in the present specification is not limited to this. That is, for example, it may be mounted by the above-mentioned wire method.

In the above-described embodiment, the first protrusion 31D and the second protrusion 31E are provided on the tilt arms 22 and 23, and the first insertion hole 31A and the second insertion hole 31B are provided on the front shield portion 31. It was. However, the invention disclosed in the present specification is not limited to this.

That is, for example, (1) the first protrusion 31D and the second protrusion 31E are provided on the front shield portion 31, and the first insertion hole 31A and the second insertion hole 31B are provided on the tilt arms 22 and 23. Or (2) the first protrusion 31D and the second insertion hole 31B are provided in the tilt arms 22 and 23, and the first insertion hole 31A and the second protrusion 31E are provided in the front shield portion 31. It may have a different configuration.

In the above-described embodiment, the first protrusion 31D and the second protrusion 31E are configured to protrude toward the front side of the seat. However, the invention disclosed in the present specification is not limited to this. That is, for example, (1) the first protrusion 31D and the second protrusion 31E protrude toward the rear side of the seat, or (2) the first protrusion 31D and the second protrusion 31E protrude in the vertical direction. There may be.

The side shield 33 according to the above-described embodiment is composed of a front shield portion 31 and a rear shield portion 32. However, the invention disclosed in the present specification is not limited to this. That is, for example, the side shield 33 may be composed of one or three or more shield portions.

The tilt arms 22 and 23 according to the above-described embodiment have a configuration in which the connecting arm portion 22A and the tip end side arm portion 22B are connected. However, the invention disclosed in the present specification is not limited to this. That is, for example, the tilt arms 22 and 23 of integrally molded products made of one member may be used.

In the above-described embodiment, the connecting and fixing portion 22D of the connecting arm portion 22A and the tip end side arm portion 22B has a closed cross-sectional shape. However, the invention disclosed in the present specification is not limited to this. That is, for example, the connecting and fixing portion 22D may have an open cross-sectional shape.

In the above-described embodiment, the AA cross section of the connecting arm portion 22A and the AA cross section of the tip end side arm portion 22B both have an open cross-sectional shape in which the side frame 11 side is open. However, the invention disclosed in the present specification is not limited to this.

That is, for example, (1) the AA cross section of the connecting arm portion 22A and the AA cross section of the tip end side arm portion 22B both have an open cross-sectional shape with the upper side open, or (2) either AA. The cross section may also have a closed cross-sectional shape, and one of the arm portions may be inserted into the other arm portion to form a closed cross-sectional shape.

In the above-described embodiment, in the connecting fixing portion 22D, the first plate material P1 constituting the connecting arm portion 22A and the second plate material P2 forming the tip end side arm portion 22B are overlapped in the plate thickness direction at at least two places. It was connected and fixed with. However, the invention disclosed in the present specification is not limited to this.

In the above-described embodiment, the overlapping direction L1 at the first location WP1 is a direction intersecting with the overlapping direction L2 at the second location WP2. However, the invention disclosed in the present specification is not limited to this.

In the above-described embodiment, the overlapping direction L1 at the first location WP1 is substantially parallel to the sheet width direction, and the overlapping direction L2 at the second location WP2 is substantially parallel to the vertical direction. However, the invention disclosed in the present specification is not limited to this.

In the above-described embodiment, the lower end position 22E on the tip end side of the end side arm portion 22B is located vertically downward from the lower end position 22F in the connecting and fixing portion 22D, as shown in FIG. 8A. However, the invention disclosed in the present specification is not limited to this.

In the above-described embodiment, the vehicle seat according to the present invention is applied to the front seat of an ordinary passenger car. However, the application of the present invention is not limited to this, and can be applied to other seats for automobiles or seats used for vehicles such as railroad vehicles, ships and aircraft.

Furthermore, the present invention is not limited to the above-described embodiment as long as it conforms to the gist of the invention described in the claims. Therefore, at least two of the plurality of embodiments described above may be combined.

1 ... Vehicle seat 3 ... Seat cushion 3A ... Back pad 5 ... Seat back 7 ... Back frame 7A ... Side frame 7C ... Lower panel 9 ... Cushion frame 11 ... Side frame 15 ... Front pipe 17 ... Rear pipe 18 ... Seat lifter 18A ... Front lifter link 18B ... Rear lid link 18C ... Bracket 19 ... Cushion pad 19A ... Seat pad 19B ... Side pad 19C ... Side pad 19E ... Ottoman 21 ... Displacement mechanism 22, 23 ... Tilt arm 22A ... Connecting arm 22B ... Tip side Arm part 22C ... Connecting part 22D ... Connecting fixed part 24 ... Tilt panel 25 ... Front panel 26 ... Support member 26A ... Inner support part 26B ... Outer support part 27 ... Surface support part 31 ... Front side shield part 31A ... First insertion Hole 31B ... 2nd insertion hole 31C ... 3rd protrusion 31D ... 1st protrusion 31E ... 2nd protrusion 31G ... Guide part 31F ... Fitting hole 32 ... Rear shield part

Claims (6)

A cushion pad having a seat pad portion for supporting the buttocks of a seated person and a side pad portion provided in a portion adjacent to the seat pad portion in the seat width direction.
A displacement mechanism that displaces the seat front end side of the seat pad portion, and
A support member that supports the seat front end side of the side pad portion and has a planar support portion that comes into surface contact with the seat front end side of the side pad portion and supports the seat front end side of the side pad portion. equipped with a,
The side pad portion has an outer pad located outside in the seat width direction of the seat surface pad portion and an inner pad located inside in the seat width direction of the seat surface pad portion.
The planar support portion has an outer support portion that comes into surface contact with the outer pad and an inner support portion that comes into surface contact with the inner pad.
The outer support portion has an outer receiving surface that can come into surface contact with the outer pad and receive a load in the seat width direction.
The inner support portion has an inner receiving surface that can come into surface contact with the inner pad and receive a load in the seat width direction.
Further, the receiving surface is an outer surface in contact from the seat width direction end side of the outer pad and the inner receiving surface, the vehicle seat you surface contact with the inner pad from the sheet width direction end side. The vehicle seat according to claim 1, wherein the planar support portion has a receiving surface (hereinafter, referred to as a first receiving surface) capable of receiving a load in the vertical direction in surface contact with the side pad portion. The planar support portion, the side pad portions in surface contact with the second receiving surface capable of receiving the load of the seat front-rear direction according to claim 2 having a (hereinafter. Referred to as a second receiving surface) Vehicle seat. At least one of the outer receiving surface and the inner receiving surface is in surface contact with the side pad portion and is capable of receiving a load in the seat width direction (hereinafter, a third receiving surface ). The vehicle seat according to claim 3 , which constitutes (referred to as a receiving surface) . The vehicle seat according to claim 4 , wherein the virtual surface parallel to the first receiving surface, the virtual surface parallel to the second receiving surface, and the virtual surface parallel to the third receiving surface are substantially orthogonal to each other . The support member is provided on the tip end side of the tilt arm that swings when the front end side inclination angle of the cushion pad is changed.
The vehicle seat according to any one of claims 1 to 5, wherein the displacement mechanism has the tilt arm.

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