JP2021167142A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat that suppresses a displacement due to an excessive load when a collision occurs.SOLUTION: A vehicular seat S according to the present invention includes: a seat main body Sh; a seat frame F that is designed as the frame of the seat main body; a slide rail 4 that slides the seat main body along the back-and-forth direction of the vehicular seat; a seat frame side member 30 provided on the seat frame; and a rail side member 40 which is located near the seat frame side member and is provided on the slide rail with a clearance between itself and the seat frame side member, when the seat main body is located at a forward position from the rearmost position of the sliding movement. When a predetermined load is applied to the seat main body, the seat frame side member is moved, and thus the seat frame side member and the rail side member abut with each other.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle seat, and more particularly to a vehicle seat in which displacement at the time of a collision is suppressed.

As a mechanism for attaching a child seat to a vehicle such as an automobile, there is a mechanism defined by an international standard called ISOFIX. For example, as described in Patent Document 1, in the ISOFIX mechanism, a child seat connector is connected to a mounting bracket called a lower anchor provided on the seat to fix the child seat to the seat.

In the prior art described in Patent Document 1, the lower portion of the child seat is attached to the seat by a locking arm. For example, although not shown, the lower anchor is configured as a U-shaped mounting bracket attached to pipes spanning the left and right sides of the seat cushion frame. By attaching the child seat to the seat back and engaging the tether anchor with the back surface of the seat back, the child seat and the seat back are integrally fixed. The lower anchor functions only as a fixing part of the child seat, and it is necessary to separately secure the rigidity of the seat frame and take measures against deformation by the mechanism and material of the seat frame.

When an excessive impact load is applied from the front due to a frontal collision, etc. with the child seat integrally attached to the seat back using a tether anchor, the child seat and seat cushion are moved by the inertial force acting on the child seat and seat cushion. A force is generated to move it forward. Therefore, a load is applied to the seat back that is integrally fixed to the child seat, and the seat back may be inclined forward and largely displaced.

Patent Document 2 discloses a structure for preventing the seat cushion from coming off due to a force acting at the time of a frontal collision. Specifically, the peripheral edge of the engagement hole on the rear side of the pair of brackets erected at the rear of the support frame is securely locked by the locking surface of the guide hook, and the seat cushion moves forward in the event of a collision. Is configured to be locked by a guide hook.

Japanese Patent No. 5248093 Japanese Patent No. 6544636

In the invention disclosed in Patent Document 2, although the forward movement of the seat cushion is locked by the guide hook, the load applied to the seat back is not reduced, so that the seat back can be tilted forward and largely displaced in the event of a collision. There was sex.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat in which displacement due to an excessive load at the time of a collision is suppressed.

The subject is a vehicle seat, a seat body, a seat frame serving as a skeleton of the seat body, a slide rail for sliding the seat body along the front-rear direction of the vehicle seat, and the seat frame. When the seat body is in a position where the seat body is moved forward from the rearmost position of the slide movement, the seat frame side member is located in the vicinity of the seat frame side member and between the seat frame side member. A rail-side member provided on the slide rail with a gap is provided, and when a predetermined load is applied to the seat body, the seat-frame-side member moves to move the seat-frame-side member and the rail. This is solved by the contact with the side member.

When a predetermined load, for example, a forward load at the time of a collision is applied to the seat body, the seat frame side member moves with the seat body, so that the seat frame side member and the rail side member come into contact with each other, thereby causing the seat body to come into contact with each other. Displacement is suppressed. Due to the simple structure, it is possible to suppress displacement due to an excessive load at the time of collision.

In the vehicle seat, the seat frame side member and the rail side member are arranged so as to face each other with the gap between them and intersect with each other, and when a predetermined load is applied to the seat body, they hit each other. It is preferable to have a first contact surface and a second contact surface in contact with each other.
Since the first contact surface of the seat frame side member and the second contact surface of the rail side member are arranged so as to intersect each other, when a load is applied to the seat body, the load must be reliably received. Is possible.

In the vehicle seat, at least one of the seat frame side member and the rail side member may have a hook-shaped portion having a notch extending in the front-rear direction of the vehicle seat.
It can be easily moved in cooperation with the front-back movement of the slide rail, and the displacement of the seat body can be reliably suppressed even when an excessive load is applied.

In the vehicle seat, the notch may have at least two sides, and the length of one side of the two sides may be longer than the length of the other side.
When an excessive load is applied, the longer side abuts on the other member, so that the displacement of the seat body can be reliably suppressed.

In the vehicle seat, the notch formed in the seat frame side member has an upper side and a lower side, and the length of the upper side is preferably longer than the length of the lower side.
When an excessive load is applied, the displacement of the seat body can be reliably suppressed by the longer upper side abutting on the rail side member.

In the vehicle seat, when a predetermined load is applied to the seat body, the upper side and the lower side of the notch may come into contact with the rail side member.
By contacting the upper side and the lower side with the rail side member, it is possible to efficiently suppress the movement with the minimum displacement even when an excessive load is applied.

In the vehicle seat, the seat frame side member and the rail side member are uniform in the vertical direction and the width direction of the vehicle seat when the seat body is in a position moved forward from the rearmost position. It is advisable to arrange them with a gap of a sufficient distance.
By arranging the seat frame side member and the rail side member in a well-balanced manner, the displacement of the seat body can be efficiently suppressed.

In the vehicle seat, at least one of the seat frame side member and the rail side member may have a J-shaped cross section.
By forming the cross section into a J shape, the rigidity of the peripheral portion of the contact portion can be improved, and the displacement of the seat body can be suppressed more reliably.

In the vehicle seat, the seat frame side member and the rail side member are each formed with notches extending in the front-rear direction of the vehicle seat, and the seat body is moved forward from the rearmost position. In some cases, it may have a first hook-like portion and a second hook-like portion that mesh with each other.
Displacement of the seat body can be suppressed by a simple structure by engaging with the first hook-shaped portion and the second hook-shaped portion having notches extending in the front-rear direction.

In the vehicle seat, the seat body has a seat back and a reclining mechanism for rotating the seat back in the front-rear direction of the vehicle seat, and the seat frame side member is attached to the reclining mechanism. good.
By attaching the seat frame side member to the reclining mechanism, which is relatively strong, the displacement of the seat body can be suppressed more firmly.

In the vehicle seat, the seat frame side member and the rail side member may come into contact with each other at a plurality of positions about the rotation center of the reclining mechanism when a predetermined load is applied to the seat body.
Displacement of the seat body can be efficiently suppressed by abutting at a plurality of positions.

In the vehicle seat, the seat frame side member and the rail side member may come into contact with each other at a position laterally rearward of the rotation center of the reclining mechanism when a predetermined load is applied to the seat body.
Since the contact position is close to the input position of the excessive load and the starting point of the displacement, the displacement of the seat body is further suppressed.

When a predetermined load, for example, a forward load at the time of a collision is applied to the seat body, the seat frame side member moves so that the seat frame side member and the rail side member come into contact with each other, thereby causing displacement of the seat body. It is suppressed. Due to the simple structure, it is possible to suppress displacement due to an excessive load at the time of collision.
Since the first contact surface of the seat frame side member and the second contact surface of the rail side member are arranged in the intersecting direction, the seat body is reliably received when a load is applied. It is possible.
It can be easily moved by emphasizing the forward and backward movement of the slide rail, and the displacement of the seat body can be reliably suppressed even when an excessive load is applied.
When an excessive load is applied, the longer side abuts on the other member, so that the displacement of the seat body can be reliably suppressed.
When an excessive load is applied, the displacement of the seat body can be reliably suppressed by the longer upper side abutting on the rail side member.
By contacting the upper side and the lower side with the rail side member, it is possible to efficiently suppress the movement with the minimum displacement even when an excessive load is applied.
By arranging the seat frame side member and the rail side member in a well-balanced manner, the displacement of the seat body can be efficiently suppressed.
Further, by forming at least one cross section of the seat frame side member and the rail side member in a J shape, the rigidity of the peripheral portion of the contact portion can be improved, and the displacement of the seat body can be suppressed more reliably. can.
Displacement of the seat body can be suppressed by a simple structure by engaging with the first hook-shaped portion and the second hook-shaped portion having notches extending in the front-rear direction.
By attaching the seat frame side member to the reclining mechanism, which is relatively strong, the displacement of the seat body can be suppressed more firmly.
Further, the displacement of the seat body can be efficiently suppressed by abutting at a plurality of positions.
Further, since the contact position is close to the input position of the excessive load and the starting point of the displacement, the displacement of the seat body is further suppressed.

It is a perspective view which shows the appearance of the vehicle seat which concerns on one Embodiment of this invention. It is a perspective view of the seat frame provided in the vehicle seat. It is explanatory drawing which shows the part of the vehicle seat enlarged. FIG. 3 is a cross-sectional view taken along the line IV-IV of FIG. It is sectional drawing along the VV line of FIG. It is explanatory drawing which shows the state when a load is applied to a sheet. It is explanatory drawing which shows another example of the seat frame side bracket and the rail side bracket. FIG. 6 is a cross-sectional view taken along the line VIII-VIII of FIG. It is explanatory drawing which shows another example of the seat frame side bracket and the rail side bracket. It is explanatory drawing which shows another example of the seat frame side bracket and the rail side bracket.

Hereinafter, the configuration of the vehicle seat according to the embodiment of the present invention will be described with reference to the drawings. However, the embodiments described below are for facilitating the understanding of the present invention and do not limit the present invention. That is, the present invention can be modified and improved without deviating from the gist thereof, and it goes without saying that the present invention includes an equivalent thereof.
Further, in the following description, the content relating to the material, shape and size of the sheet component is merely one of specific examples, and does not limit the present invention.

In the following, a vehicle seat mounted on a vehicle will be given as an example of a vehicle seat, and a configuration example thereof will be described. However, the present invention is not limited to vehicle seats mounted on ground-based vehicles having wheels such as automobiles and railroads, and for example, seats mounted on aircraft and ships moving outside the ground. Can be applied.

Further, in the following description, the "front-rear direction" is the front-rear direction of the vehicle seat (in other words, the front-rear direction of the seat body), and is a direction that coincides with the traveling direction when the vehicle is traveling. Further, the "seat width direction" is the width direction of the vehicle seat (in other words, the width direction of the seat body), which is the direction corresponding to the left-right direction seen from the occupant seated on the vehicle seat. Further, the "vertical direction" is a vertical direction of the vehicle seat, and is a direction that coincides with the vertical direction when the vehicle is traveling on a horizontal plane.

In addition, the "outside of the vehicle" in the seat width direction means the one closer to the outside of the vehicle body (for easy understanding, the side closer to the nearest door), and the "inside of the vehicle" means the one closer to the inside of the vehicle body (understood). Easy means the side away from the nearest door).
Further, in the following description, "rotation" means a rotation operation about an axis along the seat width direction, unless otherwise specified.

The shape, position, posture, etc. of each part of the vehicle seat described below will be described assuming that the vehicle seat is in a seated state, unless otherwise specified.

The basic configuration of the vehicle seat (hereinafter referred to as the vehicle seat S) according to the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view of the vehicle seat S. In FIG. 1, a part of the vehicle seat S is shown in a configuration in which the trim cover T is removed for convenience of illustration.

The vehicle seat S is a seat that is placed on the vehicle body floor and on which the occupants of the vehicle are seated. In the present embodiment, the vehicle seat S is used as a rear seat corresponding to the rear seat of the vehicle. However, the present invention is not limited to this, and the vehicle seat S can also be used as a front seat, and is a second row middle seat or a third row in a vehicle having three rows of seats in the front-rear direction. It can also be used as a rear seat.

As shown in FIG. 1, the vehicle seat S has a seat main body Sh that forms a main body portion thereof. As shown in FIG. 1, the seat body Sh is arranged on the seat back 1, which is a backrest portion that supports the back of the seated person, the seat cushion 2, which is the seating portion that supports the buttocks of the seated person, and the upper part of the seat back 1. The headrest 3 that supports the seated person's head is the main component. The seat back 1 and the seat cushion 2 are connected so as to sandwich the reclining mechanism 19 described later. The seat back 1 is rotatably attached to the vehicle body floor via a base frame 12 described later.

As shown in FIG. 2, a seat frame F is provided in the vehicle seat S, and the seat frame F is a seat back frame 10 which is a frame of the seat back 1 and a frame of the seat cushion 2. It is composed of a seat cushion frame 20 and a base frame 12. The base frame 12 is connected to the lower end of the back side frame 11 of the seat back frame 10 via a reclining mechanism 19.

The seat back 1 and the seat cushion 2 are configured by providing the pad member P and the trim cover T on the outside of the seat back frame 10 and the seat cushion frame 20. The pad member P is a urethane base material molded by foam molding using, for example, a urethane foam material, and the trim cover T is made of a material such as cloth or leather.

Further, the rear end portion of the seat cushion 2 is connected to the side portion of the seat back 1. As shown in FIGS. 1 and 2, a cushion side frame 21 described later is interposed between the rear end portion of the seat cushion 2 and the lower end portion of the seat back 1. The cushion side frame 21 is attached to the seat back 1 in a rotatable state. As a result, the seat cushion 2 can rotate together with the seat back 1.

Further, a pair of slide rails 4 are installed on the left and right at the lower part of the seat body Sh. The seat body Sh is attached to the vehicle body floor by a pair of slide rails 4 so as to be slidable in the front-rear direction.

Further, the seat body Sh can be stored in a folded state on the storage floor formed in front of the seat body Sh. The storage floor is a concave shape formed by denting a part of the vehicle body floor (specifically, a portion of the vehicle body floor located in front of the seat body Sh when the seat body Sh is seated). It's a space.

As shown in FIG. 2, the seat frame F mainly includes a seat back frame 10 that forms the skeleton of the backrest portion of the seat frame F and a seat cushion frame 20 that forms the skeleton of the seating portion of the seat frame F. ..
The seat back frame 10 mainly includes a pipe frame 18 made of a pipe processed into a square frame shape, a back panel 22, and a back side frame 11.

The back side frame 11 is a frame that extends in the vertical direction and is attached to the left and right side portions of the pipe frame 18. In other words, the backside frame 11 is a frame that is arranged outside the seat of the pipe frame 18 and constitutes the left and right end portions of the seat back frame 10 together with the side portions of the pipe frame 18. The backside frame 11 is a U-shaped plate-shaped frame having a cross section opened toward the inside of the seat. The upper part of the backside frame 11 is welded to the central portion of the side portion of the pipe frame 18, and is rotatably attached to the base frame 12.

The base frame 12 is connected to the backside frame 11 at its upper portion via a reclining mechanism 19. Further, the base frame 12 is fixed to the upper rail 6 of the slide rail 4 at the lower portion thereof.

The pair of slide rails 4 are devices for sliding and moving the seat body Sh along the front-rear direction, and have a known structure (a structure of a general slide rail mechanism). The slide rail 4 includes a lower rail 5 fixed on the vehicle body floor and an upper rail 6 that can slide and move with respect to the lower rail 5 (see FIGS. 1 and 2). The upper rail 6 is slidable with respect to the lower rail 5 fixed to the vehicle body. Then, the seat back frame 10 is attached to the upper rail 6 via the base frame 12, and the seat back frame 10 can be moved back and forth with respect to the lower rail 5 integrally with the upper rail 6. Therefore, the seat body Sh attached to the upper rail 6 moves back and forth as the upper rail 6 slides.

Further, the slide rail 4 includes a lock device (not shown) that locks the slide movement of the upper rail 6. The upper rail 6 is normally locked by a lock device in a state where it cannot slide and move, and when the occupant performs a predetermined operation, it is unlocked and becomes a state where it can slide and move. The position locked by the lock device may be any position within the range in which the slide rail 4 can slide, and for example, when the seat body Sh is in the frontmost position of the slide rail 4, the lock device holds the upper rail 6. It can be locked so that it cannot be slid at the frontmost position. As for the locking device, since general equipment for locking the upper rail 6 can be used, detailed description thereof will be omitted.

The seat frame side bracket 30 and the rail side bracket 40 provided on the vehicle seat S of the present embodiment will be described with reference to FIGS. 1 to 9.

The seat frame side bracket 30 (an example of the seat frame side member) is a member provided on the seat frame F. More specifically, the seat frame side bracket 30 is arranged at the lower end of the seat back frame 10 of the seat frame F, and is provided at the outer end portion of the reclining mechanism 19 that rotates the seat back 1 in the front-rear direction.

The rail-side bracket 40 (an example of a rail-side member) is a member provided on the slide rail 4. More specifically, the rail-side bracket 40 slides forward by the slide rail 4 and is arranged at the frontmost position (an example of a position moved forward from the rearmost position). It is provided on the outer side of the lower rail 5 of the slide rail 4 so as to be located in the vicinity of the seat frame side bracket 30. In FIG. 3, the position of the seat frame side bracket 30 when the seat body Sh is in the frontmost position is shown by a solid line, and the position of the seat frame side bracket 30 when the seat body Sh is in the rearmost position. Is indicated by the alternate long and short dash line.

The seat frame side bracket 30 has a first hook-shaped portion 32 having a notch 33 extending in the front-rear direction of the vehicle seat S at the lower end thereof. Further, the rail-side bracket 40 has a second hook-shaped portion 42 having a notch 43 extending in the front-rear direction of the vehicle seat S at the upper end thereof (see FIG. 5). In the present embodiment, as the seat body Sh slides forward, the first hook-shaped portion 32 of the seat frame side bracket 30 and the second hook-shaped portion 42 of the rail side bracket 40 are shown in FIGS. 3 to 5. Arranged to mesh as shown. However, when the seat body Sh slides to the frontmost position, there are gaps K1, K2, K3, M1, M2, and M3 between the seat frame side bracket 30 and the rail side bracket 40, and the seat frame side bracket 30 And the rail side bracket 40 are not in direct contact with each other. By providing a gap instead of making direct contact, the generation of abnormal noise is suppressed when the seat body Sh is slid and moved.

In recent years, a child seat has been fixed to a vehicle seat S by an ISOFIX mechanism, a lower anchor 51 (see FIG. 2) and a tether anchor 52 (see FIG. 2). Since the child seat is directly fixed to the seat back 1 by the lower anchor 51 and the tether anchor 52, when an excessive impact load is input from the front due to a collision or the like, the child seat moves forward due to inertial force and is pulled by the seat. The back 1 is inclined in the direction of arrow B in FIG. Further, when an excessive load due to a collision or the like is applied to the seat back 1, the upper rail 6 is displaced in the front side so as to be lifted.

When a vehicle collides with the seat body Sh in the foremost position, an excessive forward load (load) is applied to the vehicle seat S when the child seat is attached as described above, and the seat body Sh becomes Trying to fall forward. At this time, as shown in FIG. 6, the seat frame side bracket 30 attached to the reclining mechanism 19 rotates and moves in the direction of arrow B, and the first hook-shaped portion 32 of the seat frame side bracket 30 and the rail side bracket 40 The second hook-shaped portion 42 of the above comes into contact with the second hook-shaped portion 42. When the first hook-shaped portion 32 comes into contact with each other, the rotational movement (displacement) of the seat body Sh is suppressed. Due to the simple structure of engaging the two members, it is possible to suppress the displacement of the seat body Sh due to an excessive load at the time of collision.

The seat frame side bracket 30 and the rail side bracket 40 will be described in more detail.
The seat frame side bracket 30 and the rail side bracket 40 are arranged close to each other with the seat body Sh in the foremost position, and at this time, the first contact surface is arranged so as to face each other with the gaps K3 and M3 in between. It has 31 and a second contact surface 41 (see FIGS. 3 and 5). As shown in FIG. 5, the first contact surface 31 and the second contact surface 41 are arranged so as to intersect each other at right angles.
When a load is applied to the seat body Sh in the direction of arrow A, the seat frame side bracket 30 moves forward, and the first contact surface 31 and the second contact surface 41 come into contact with each other. Since the first contact surface 31 and the second contact surface 41 are arranged so as to intersect each other, the seat frame side bracket 30 and the rail side bracket 40 are in contact with each other even if they are displaced in the vertical direction or the width direction. be able to. Therefore, the load received by the seat body Sh can be reliably received.

Further, the notch 33 formed in the first hook-shaped portion 32 of the seat frame side bracket 30 has an upper side 33a and a lower side 33b. The length L1 of the upper side 33a is formed longer than the length L2 of the lower side 33b. When a load is applied to the seat body Sh in the direction of arrow B, the seat frame side bracket 30 rotates and the upper side 33a is the upper surface of the second hook-shaped portion 42 of the rail side bracket 40, as shown in FIG. It abuts on 42a, and the lower side 33b abuts on the lower surface 42b of the second hook-shaped portion 42. By abutting at two places (contact points T1 and T2), the movement of the seat frame side bracket 30 is efficiently suppressed with the minimum displacement.

The notch 43 of the rail-side bracket 40 of the present embodiment has an outer side 43a and an inner side 43b. The length L4 of the inner side 43b is longer than the length L3 of the outer side 43a. When a load is received from the width direction of the vehicle, the seat body Sh moves in the width direction or rotates about an axis in the vertical direction. As a result, the seat frame side bracket 30 moves in the width direction and comes into contact with the outer side 43a and the inner side 43b of the rail side bracket 40. As a result, the movement of the seat body Sh is efficiently suppressed with the minimum displacement.

Further, when the seat body Sh is in the foremost position, there is a gap in the vertical direction of the seat, but the sizes of the gaps K1 and K2 (intervals KL1 and KL2) are set to be substantially equal. (See Fig. 4). Further, although the gaps M1 and M2 are opened in the width direction of the sheet, the sizes of the gaps M1 and M2 (intervals ML1 and ML2) are also set to be substantially equal (see FIG. 5). ). By evenly providing a gap, the seat frame side bracket 30 and the rail side bracket 40 are arranged in a well-balanced manner, whereby the displacement of the seat body Sh can be efficiently suppressed. The length L5 of the seat frame side bracket 30 facing the rail side bracket 40 and the length L6 of the rail side bracket 40 facing the seat frame side bracket 30 are sufficiently longer than the gaps K1, K2, M1 and M2. (See FIG. 5).

Further, as described above, the seat body Sh has a reclining mechanism 19 that rotates the seat back 1 in the front-rear direction of the vehicle seat S. The seat frame side bracket 30 is attached to the outer end portion of the reclining mechanism 19. Further, when a load is applied to the seat body Sh, the seat frame side bracket 30 abuts at a plurality of contact points T1 and T2 about the rotation center 19a of the reclining mechanism 19 as an axis, as shown in FIG. Displacement of the seat body Sh can be suppressed more firmly by abutting at a plurality of positions and providing the seat frame side bracket 30 in the reclining mechanism 19.
Further, at this time, the reclining mechanism 19 is in contact with the reclining mechanism 19 at a position on the outer rear side of the rotation center 19a (contact portion T2). Since the contact portion T2 is close to the input position of the excessive load and the starting point of the displacement, the displacement of the seat body Sh can be further suppressed.

The rail-side brackets 40 shown in FIGS. 1 to 6 are provided on the slide rail 4 so that they can come into contact with the seat frame-side bracket 30 when the seat body Sh is in the foremost position. However, this is an example, and it may be provided at any position as long as it is a position moved forward from the rearmost position of the slide movement of the slide rail 4.

A modified example of the seat frame side bracket 30 and the rail side bracket 40 will be described with reference to FIGS. 7 to 10. The first hook-shaped portion 32 and the second hook-shaped portion 42 of the seat frame side bracket 30 and the rail side bracket 40 of FIGS. 1 to 6 were formed so as to mesh with each other in the front-rear direction. The first hook-shaped portions 132A and 132B and the second hook-shaped portions 142A to 142D of the seat frame side brackets 130A and 130B and the rail side brackets 140A to 140D are formed so as to mesh with each other in the vertical direction. In FIGS. 7, 9, and 10, the positions of the seat frame side brackets 130A and 130B when the seat body Sh is in the frontmost position are shown by solid lines, and the seat body Sh is in the rearmost position. The positions of the seat frame side brackets 130A and 130B are indicated by the alternate long and short dash lines.

As shown in FIG. 8, the cross section of the first hook-shaped portion 132A of the seat frame side bracket 130A is formed in a J shape, and the cross section of the second hook-shaped portion 142A of the rail side bracket 140A is formed in an inverted J shape. ing. The first hook-shaped portion 132A and the second hook-shaped portion 142A are arranged with a gap, and when an excessive load is applied, for example, the first contact surface 131 and the second contact surface 141 come into contact with each other. Therefore, the displacement of the seat body Sh can be suppressed. By forming the cross section in a J shape, it is possible to improve the rigidity of the contacting portion, for example, the main changing portion of the first contact surface 131 and the second contact surface 141, and the shape is deformed even when the contact is made. It is difficult and the displacement of the seat body Sh can be suppressed more reliably.

Further, as shown in FIG. 7, apart from the rail-side bracket 140A, the rail-side bracket 140B having the same shape may be arranged at a position behind the rail-side bracket 140A, for example, at a position at the center of the slide movement range. By installing the plurality of rail-side brackets 140A and 140B on the slide rail 4, a plurality of second hook-shaped portions 142A and 142B that are in contact positions with the first hook-shaped portion 132A of the seat frame-side bracket 130A are provided. Can be done. By arranging a plurality of seats, even if the seat body Sh is located at a position other than the frontmost position, the seat frame side bracket 130A comes into contact with the rail side bracket 140B when an excessive load is applied, and the displacement of the seat body Sh is suppressed. be able to.
The rail-side brackets 140A and 140B may be installed at any position as long as they are moved forward from the rearmost position. Further, another rail-side bracket may be provided between the two rail-side brackets 140A and 140B. By providing the plurality of rail-side brackets 140A and 140B on the slide rail 4 in this way, the seat frame-side brackets 130A can abut or engage with the rail-side brackets 140A and 140B at the plurality of divided positions. ..

Further, as shown in FIG. 9, a rail-side bracket 140C that is longer in the front-rear direction than the seat frame-side bracket 130A may be provided on the lower rail 5 of the slide rail 4. In the rail-side bracket 140C, the second hook-shaped portion 142C that comes into contact with the first hook-shaped portion 132A of the seat frame-side bracket 130A is formed by being divided into two parts. Specifically, the second hook-shaped portion 142C is divided so that it can be brought into contact with the frontmost position and the intermediate position behind the second hook-shaped portion 142C. By providing the slide rail 4 with the rail-side bracket 140C having the second hook-shaped portion 142C divided into a plurality of parts in this way, the seat frame-side bracket 130A abuts on the rail-side bracket 140C at the plurality of divided positions. Possible or engageable. Further, by dividing the second hook-shaped portion 142C of the rail-side bracket 140C, one member can be brought into contact with each other at a plurality of positions, so that the number of parts can be reduced.
The second hook-shaped portion 142C has an inverted J-shaped cross section similar to the second hook-shaped portion 142A shown in FIG.

The seat frame side bracket 130A shown in FIG. 7 is formed so as to have an equal length in the front-rear direction with the line including the rotation center 19a of the reclining mechanism 19 as the target axis line. The first hook-shaped portion 132B and the second hook-shaped portion 142D of the rail-side bracket 140D are formed so as to extend rearward from the rotation center 19a. Further, the length L8 of the second hook-shaped portion 142D of the rail-side bracket 140D is formed to be longer than the length L7 of the first hook-shaped portion 132B of the seat frame-side bracket 130B. By extending the second hook-shaped portion 142B rearward, when an excessive load is applied, the displacement of the seat body Sh can be further suppressed because the input position and the starting point of the displacement are close to each other.
Further, by making the length L8 of the second hook-shaped portion 142D longer than the length L7 of the first hook-shaped portion 132B, the seat main body includes not only the frontmost position of the slide movement but also the frontmost position. The displacement of Sh can be suppressed.
The first hook-shaped portion 132B has a J-shaped cross section similar to the first hook-shaped portion 132A shown in FIG. 8, and the second hook-shaped portion 142D has a second hook-shaped portion 142A shown in FIG. Similar to the above, the cross section is formed in an inverted J shape.

The vehicle seat S of the present embodiment has been described above with reference to the drawings. In the above description, the case where the seat back 1 is in an upright state (a state in which the seat back 1 can be seated) has been described. However, the displacement suppression by the seat frame side bracket 30 and the rail side bracket 40 is not only when standing up, but also when the seat back 1 is laid down forward and is arranged at a position where it overlaps with the seat cushion 2 (loading platform state). Even if there is, the displacement can be suppressed. Even when an excessive load is applied by simply adding a member, it is possible to suppress the reclining mechanism 19 from falling toward the center of the seat or moving upward.

S Vehicle seat (vehicle seat)
Sh Seat body T Trim cover P Pad member 1 Seat back 2 Seat cushion 3 Headrest 4 Slide rail 5 Lower rail 6 Upper rail F Seat frame 10 Seat back frame 11 Back side frame 12 Base frame 18 Pipe frame 19 Reclining mechanism 19a Rotation center 20 Seat Cushion frame 21 Cushion side frame 22 Back panels 30, 130A, 130B Seat frame side bracket (seat frame side member)
31, 131 First contact surface 32, 132A, 132B First hook-shaped portion 33 Notch 33a Upper side 33b Lower side 40, 140A, 140B, 140C, 140D Rail side bracket (rail side member)
41, 141 Second contact surface 42, 142A, 142B, 142C, 142D Second hook-shaped part 42a Upper surface 42b Lower surface 43 Notch 43a Outer side 43b Inner side 51 Lower anchor 52 Tether anchor K1, K2, K3, M1, M2, M3 Gap KL1, KL2, ML1, ML2 Interval T1, T2 Contact point

Claims (12)

It ’s a vehicle seat,
The seat body and
The seat frame, which is the skeleton of the seat body,
A slide rail that slides the seat body along the front-rear direction of the vehicle seat, and
The seat frame side member provided on the seat frame and
When the seat body is in a position moved forward from the rearmost position of the slide movement, the seat body is located in the vicinity of the seat frame side member and has a gap between the seat frame side member and the slide rail. With a rail side member to be provided,
A vehicle seat characterized in that when a predetermined load is applied to the seat body, the seat frame side member moves and the seat frame side member and the rail side member come into contact with each other. The seat frame side member and the rail side member are arranged so as to face each other with the gap between them and intersect with each other, and a first contact surface that comes into contact with each other when a predetermined load is applied to the seat body. The vehicle sheet according to claim 1, further comprising a second contact surface and a second contact surface. The vehicle according to claim 1 or 2, wherein at least one of the seat frame side member and the rail side member has a hook-shaped portion having a notch extending in the front-rear direction of the vehicle seat. Sheet for. The vehicle sheet according to claim 3, wherein the notch has at least two sides, and the length of one side of the two sides is longer than the length of the other side. The vehicle seat according to claim 3 or 4, wherein the notch formed in the seat frame side member has an upper side and a lower side, and the length of the upper side is longer than the length of the lower side. The vehicle seat according to claim 5, wherein when a predetermined load is applied to the seat body, the upper side and the lower side of the notch come into contact with the rail side member. When the seat body is in a position where the seat body is moved forward from the rearmost position, the seat frame side member and the rail side member are provided with a gap of an equal distance in the vertical direction and the width direction of the vehicle seat. The vehicle seat according to any one of claims 1 to 6, wherein the seat is arranged in a row. The vehicle seat according to any one of claims 1 to 5, wherein at least one of the seat frame side member and the rail side member has a J-shaped cross section. The seat frame side member and the rail side member each have a notch extending in the front-rear direction of the vehicle seat, and mesh with each other when the seat body is in a position moved forward from the rearmost position. The vehicle seat according to any one of claims 1 to 8, further comprising a first rail-shaped portion and a second hook-shaped portion. The seat body has a seat back and a reclining mechanism that rotates the seat back in the front-rear direction of the vehicle seat.
The vehicle seat according to any one of claims 1 to 9, wherein the seat frame side member is attached to the reclining mechanism. The tenth aspect of the present invention, wherein the seat frame side member and the rail side member abut at a plurality of positions about the rotation center of the reclining mechanism when a predetermined load is applied to the seat body. Vehicle seat. 10. The listed vehicle seat.

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