Vehicle seat

Abstract

To provide a seat for a vehicle which suppresses displacement due to excessive load during a collision.SOLUTION: A seat S for a vehicle includes: a seat body Sh; a slide rail 4 which includes a lower rail 5 and an upper rail 6 supported so as to be movable relative to the lower rail and slides and moves the seat body along the cross direction of the seat for the vehicle; and a base frame 12 which includes a connection part 15 for connecting the upper rail with the seat body and an extension part 13b extending from the connection part toward the frontward direction of the seat for the vehicle. The extension part is provided so that a part of the underside of the extension part comes into contact with a part of the top faces of rail members 31, 32, constituting the upper rail when at least a prescribed load is applied. The extension part and the rail members include a restriction part 7 which restricts movement of the base frame in the width direction of the seat for the vehicle.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat whose displacement during a collision is suppressed.

Background Art

[0002] 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 connector of the child seat is connected to a mounting bracket called a lower anchor provided on the seat to fix the child seat to the seat.

[0003] In the prior art described in Patent Document 1, the lower part of the child seat is attached to the seat with a locking arm. For example, although not shown, the lower anchor is configured as a U-shaped mounting bracket attached to a pipe spanned across the left and right 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 realize ensuring the rigidity of the seat frame and countermeasures against deformation by the mechanism and material of the seat frame.

[0004] When an excessive impact load is input from the front due to a frontal collision or the like in a state where the child seat is integrally attached to the seat back using the tether anchor, an inertial force acting on the child seat and the seat cushion causes a force to move the child seat and the seat cushion forward. Therefore, a load is applied to the seat back integrally fixed to the child seat, and the seat back may be inclined forward and largely displaced.

[0005] Patent Document 2 discloses a structure for preventing the detachment of the seat cushion due to the force acting during a frontal collision. Specifically, the peripheral portion of the engagement hole on the rear side of a pair of brackets erected at the rear of the support frame is reliably locked by the locking surface of the guide hook, and the seat cushion that moves forward during a collision is configured to be locked by the guide hook.

Prior Art Document

Patent Document

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] 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 there is a possibility that the seat back may tilt forward and be greatly displaced during a collision.

[0008] The present invention has been made in view of the above problems, and its object is to provide a vehicle seat in which displacement due to an excessive load during a collision is suppressed.

Means for Solving the Problems

[0009] The above problem is solved by a vehicle seat having a seat body, a lower rail, and an upper rail supported so as to be relatively movable with respect to the lower rail, a pair of slide rails for sliding the seat body along the longitudinal direction of the vehicle seat, a connecting portion connecting the seat body and the upper rail, a connecting pipe spanned between the upper rails of the pair of slide rails, and a bracket connected to the connecting pipe, wherein the bracket is provided as the connecting portion, an outer end portion of the bracket in the seat width direction is provided so as to be located outside an outer end portion of the upper rail, and a part of a lower surface of the outer end portion of the bracket in the seat width direction is provided so as to be displaced downward when at least a predetermined load is applied. , the bracket has an extension portion that projects in a cantilever manner without being fixed to the upper rail. When the predetermined load is not applied, a gap is provided between a part of the extension portion and a part of the upper surface of the rail member constituting the upper rail. and this solves the problem. With the above configuration, it is possible to suppress the generation of abnormal noise due to contact between the bracket and the rail member.

[0011] In the above vehicle seat, it is preferable that an outer end portion of the bracket in the seat width direction is provided so as to be located outside an outer end portion of the pair of slide rails. Further, the extension portion is preferably disposed below the connecting pipe. Further, the extension portion is preferably disposed in front of the connecting pipe.

[0012] In the above vehicle seat, The bracket and the rail member have a restricting portion that restricts movement of the bracket in the width direction of the vehicle seat. the restricting portion Bracket is preferably configured such that an insertion hole is formed in either one of the and the rail member, and the other has a protruding portion inserted into the insertion hole. Bracket With the above configuration, displacement in the width direction is suppressed.

[0015] In the above vehicle seat, A pair of the slide rail preferably has a locking mechanism for restricting movement of the upper rail, and the protruding portion is preferably provided in the locking mechanism. With the above configuration, by providing the protruding portion in the locking mechanism, the protruding portion can be provided without adding a new member, and displacement in the width direction can be efficiently suppressed.

[0016] In the vehicle seat described above, the Bracket is fixed to the rear part of the upper rail, and the Bracket may be provided at a position vertically overlapping the lock mechanism in a side view. The extending portion may be provided with a space at a position vertically overlapping the lock mechanism in a side view. With the above configuration, displacement can be suppressed in a compact arrangement.

Advantages of the Invention

[0021] According to the vehicle seat of the present invention, the base frame includes an extending portion that extends forward from its connecting portion, and the extending portion is provided such that at least a part of the lower surface of the extending portion and a part of the upper surface of the rail member come into contact when a predetermined load is applied. Thereby, the rotation of the base frame is suppressed, and the displacement of the seat body connected to the base frame is also suppressed. Further, since the movement of the base frame in the width direction is restricted by the restricting portion, the seat body is surely supported by the base frame, and the displacement of the seat body can be suppressed. Further, according to the vehicle seat of the present invention, the generation of abnormal noise due to the contact between the extending portion and the rail member can be suppressed. Further, according to the vehicle seat of the present invention, the displacement of the base frame in the width direction is suppressed. Further, according to the vehicle seat of the present invention, by forming a plurality of insertion holes in the front-rear direction, the displacement in the width direction can be efficiently suppressed. Further, according to the vehicle seat of the present invention, the displacement amount in the width direction can be suppressed, and the generation of abnormal noise can be suppressed when no predetermined load is applied. Further, according to the vehicle seat of the present invention, by providing the protruding portion on the lock mechanism, the protruding portion can be provided without newly adding a member, and the displacement in the width direction can be efficiently suppressed. Further, since the extending portion is supported with a space at a position vertically overlapping the lock mechanism in a side view, displacement can be suppressed in a more compact arrangement. In addition, a notch is formed between the connection part and the extension part so as to avoid the locking mechanism, thereby eliminating interference between the base frame and the locking mechanism and enabling the extension part to be arranged compactly. In addition, since the base frame has a bulging part, the rigidity of the base frame is improved. In addition, the base frame has a flange part at the outer peripheral end, and the extension part is formed in a U-shaped cross section that opens inward in the width direction, thereby improving the rigidity of the base frame and also improving the rigidity of the extension part. In addition, by having two connecting members that connect the base frame and the rear bracket at positions before and after sandwiching the reclining mechanism, the rigidity of the base frame is improved.

Brief Description of the Drawings

[0022]

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Embodiments for Carrying Out the Invention

[0023] Hereinafter, the configuration of the vehicle seat according to an embodiment of the present invention will be described with reference to the drawings. However, the embodiment described below is for facilitating the understanding of the present invention and does not limit the present invention. That is, the present invention can be changed and improved without departing from its gist, and it goes without saying that equivalents thereof are included in the present invention. Also, in the following description, the content regarding the material, shape, and size of the seat component parts is merely one specific example and does not limit the present invention.

[0024] In the following, as an example of the vehicle seat, a vehicle seat mounted on a vehicle will be cited and its configuration example will be described. However, the present invention is not limited to the vehicle seat mounted on a ground vehicle having wheels such as an automobile or a railway vehicle, and can also be applied to seats mounted on, for example, an aircraft or a ship that moves other than on the ground.

[0025] Also, 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 coincides with the traveling direction when the vehicle is running. Further, the "seat width direction" is the lateral width direction of the vehicle seat (in other words, the width direction of the seat body) and coincides with the left-right direction as seen from the occupant sitting on the vehicle seat. Also, the "vertical direction" is the vertical direction of the vehicle seat and coincides with the vertical direction when the vehicle is running on a horizontal plane.

[0026] Also, the "outer side of the vehicle" in the seat width direction means the side closer to the outside of the vehicle body (more simply, the side closer to the nearest door), and the "inner side of the vehicle" means the side closer to the inside of the vehicle body (more simply, the side away from the nearest door). Also, in the following description, "rotation" means a rotation operation centered on an axis along the seat width direction unless otherwise specified.

[0027] Regarding the shape, position, posture, etc. of each part of the vehicle seat described below, unless otherwise specified, the vehicle seat will be described assuming the case where the vehicle seat is in the seating state described later.

[0028] <Vehicle seat S> The basic configuration of the vehicle seat (hereinafter, vehicle seat S) according to the present embodiment will be described with reference to FIG. 1. FIG. 1 is a perspective view of the vehicle seat S. For a part of the vehicle seat S in FIG. 1, for the convenience of illustration, it is shown in a configuration with the trim cover T removed.

[0029] The vehicle seat S is a seat placed on the vehicle body floor and on which a vehicle occupant sits. In the present embodiment, the vehicle seat S is used as a rear seat corresponding to the rear seat of the vehicle. However, it is not limited to this, and the vehicle seat S can also be used as a front seat, and can also be used as a middle seat in the second row or a rear seat in the third row in a vehicle equipped with three rows of seats in the front-rear direction.

[0030] As shown in FIG. 1, the vehicle seat S has a seat body Sh that forms its main body part. As shown in FIG. 1, the seat body Sh mainly includes a seat back 1 that serves as a backrest part for supporting the back of the seated person, a seat cushion 2 that serves as a seating part for supporting the buttocks of the seated person, and a headrest 3 arranged at the upper part of the seat back 1 for supporting the head of the seated person. The seat back 1 and the seat cushion 2 are connected so as to sandwich a reclining mechanism 19 described later. The seat back 1 is attached to the vehicle body floor via a base frame 12 described later in a rotatable state.

[0031] Among vehicle seats S, as shown in Fig. 2, a seat frame F is provided. The seat frame F is composed of a seat back frame 10 which is the frame of the seat back 1, a seat cushion frame 20 which is the frame of the seat cushion 2, 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.

[0032] On the outside of the seat back frame 10 and the seat cushion frame 20, a pad member P and a trim cover T are provided, thereby forming the seat back 1 and the seat cushion 2. The pad member P is a urethane base material formed 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.

[0033] Also, the rear end of the seat cushion 2 is connected to the side portion of the seat back 1. Between the rear end of the seat cushion 2 and the lower end of the seat back 1, as shown in Figs. 1 and 2, a cushion side frame 21 described later is interposed. This cushion side frame 21 is attached to the seat back 1 in a rotatable state. Thereby, the seat cushion 2 can rotate together with the seat back 1.

[0034] Also, a slide rail 4 described later is installed at the lower part of the seat body Sh. By this slide rail 4, the seat body Sh is attached to the vehicle body floor in a state where it can slide in the front-rear direction.

[0035] Also, the seat body Sh can be stored in a folded state in a storage floor formed in front of it. The storage floor is a concave space formed by depressing a part of the vehicle body floor (specifically, the part of the vehicle body floor that is located in front of the seat body Sh when the seat body Sh is in the seated state) downward.

[0036] As shown in FIG. 2, the seat frame F mainly comprises 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 pipes processed into a rectangular frame shape, a back panel 22, and a back side frame 11.

[0037] The back side frame 11 is a frame that extends vertically and is respectively attached to the left and right side portions of the pipe frame 18. In other words, the back side frame 11 is disposed outside the seat of the pipe frame 18 and forms the left and right end portions of the seat back frame 10 together with the side portions of the pipe frame 18. The back side frame 11 is a U-shaped plate frame with a cross-section opening toward the inside of the seat. The upper part of the back side frame 11 is welded to the central part of the side portion of the pipe frame 18 and is rotatably attached to a base frame 12 described later.

[0038] The base frame 12 is connected to the back side frame 11 at its upper part via a reclining mechanism 19. Also, the base frame 12 is bolted to the upper rail 6 of the slide rail 4 at its lower part (see FIGS. 3 and 4).

[0039] The slide rail 4 is a device for sliding the seat body Sh along the front-rear direction and has a known structure (the structure of a general slide rail mechanism). The slide rail 4 includes a pair of lower rails 5 fixed on the vehicle body floor and upper rails 6 slidable relative to the lower rails 5 (see FIGS. 1 and 2). The upper rail 6 is slidable relative to the lower rail 5 fixed to the vehicle body. The seat back frame 10 is attached to the upper rail 6 via the base frame 12, and the seat back frame 10 can move back and forth relative 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.

[0040] As shown in FIG. 6, the slide rail 4 includes a locking device 30 (an example of a locking mechanism) for locking the sliding movement of the upper rail 6 and a cable (not shown) for releasing the lock of the locking device 30. The locking device 30 is provided with a lock bracket 31 and a cable bracket 32 for holding the cable.

[0041] Normally, the upper rail 6 is locked in a state where it cannot slide by the locking device 30, and when the occupant performs a predetermined operation, the lock is released and the upper rail 6 becomes slidable. More specifically, an operation member (not shown) is connected to the locking device 30 via a cable. Since a general device for locking the upper rail 6 can be used for the locking device 30, a detailed description thereof will be omitted. When the operation member is operated, as a result of the cable being pulled, the locking device 30 operates to release the lock of the upper rail 6.

[0042] <Base frame> Using FIGS. 4 to 6, the base frame 12 will be described in detail. As described above, the base frame 12 is a member that connects the lower part of the backside frame 11 and the upper rail 6. The base frame 12 is composed of a rail bracket 13 connected to the upper rail 6 and a connecting bracket 14 connected to the backside frame 11. The rail bracket 13 and the connecting bracket 14 are fastened together by three bolts 17 as shown in FIG. 4 and are integrated.

[0043] The rail bracket 13 has a bracket main body 13a that functions as a connecting portion 15 connected to the upper rail 6, and an extending portion 13b that extends forward from the bracket main body 13a toward the vehicle seat S. The bracket main body 13a of the rail bracket 13 and the connecting bracket 14 constitute a connecting portion 15 that connects the seat main body Sh and the upper rail 6.

[0044] In the vehicle seat S of the present embodiment, a clearance L is provided between the lower surface 13e of the extending portion 13b of the rail bracket 13 and the upper surfaces (end faces 31b, 32b shown in FIG. 9) of the lock bracket 31 and the cable bracket 32 which are rail members constituting the upper rail 6. The size of the clearance L is about 1.5 mm, which is narrower than the wall thickness J (about 2.6 mm) of the rail bracket 13. When a predetermined load is applied, the rail bracket 13 rotates so that the lower surface 13e of the extending portion 13b comes into contact with the end faces 31b, 32b of the lock bracket 31 and the cable bracket 32. The lower surface 13e of the extending portion 13b and the end faces 31b, 32b of the lock bracket 31 and the cable bracket 32 may be provided to be in contact with each other in a normal state where no load is applied.

[0045] As shown in FIG. 3, in recent years, a child seat 40 has been fixed to a vehicle seat S by a lower anchor 41 (see FIG. 2), which is an ISOFIX mechanism, and a tether anchor 42 (see FIG. 2). Since the child seat 40 is directly fixed to the seat back 1, when an excessive impact load is input from the front due to a collision or the like, the child seat moves forward (in the direction of arrow C) due to inertia, and the seat back 1 is pulled and inclined in the direction of arrow B. 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 direction so as to float. At this time, the extending portion 13b of the base frame 12 connected to the back side frame 11 abuts against the end faces 31b and 32b of the lock bracket 31 and the cable bracket 32, thereby supporting the seat back frame 10 so as not to rotate in the B direction, and the displacement of the seat back frame 10 can be suppressed. Thereby, the displacement of the seat body Sh is also suppressed.

[0046] In addition, a restricting portion 7 for restricting the movement of the base frame 12 in the outer side direction in the width direction (in the direction of arrow D in FIG. 6) is provided on the extending portion 13b and the lock bracket 31 and the cable bracket 32. In the present embodiment, as shown in FIGS. 6 and 8, the restricting portion 7 is constituted by an insertion hole 13d formed in the extending portion 13b and protruding portions 31a and 32a provided on the lock bracket 31 and the cable bracket 32, and the protruding portions 31a and 32a are inserted into the insertion hole 13d to restrict the movement in the width direction. In the present embodiment, the protruding portions 31a and 32a are formed by bending the ends of the lock bracket 31 and the cable bracket 32 into an L shape.

[0047] As described above, when a predetermined load is applied during a collision, the extension portion 13b abuts against the end faces 31b and 32b of the lock bracket 31 and the cable bracket 32, thereby stopping the rotation of the base frame 12 and the extension portion 13b supports the seat back frame 10 so as not to be displaced. At that time, in a state where the extension portion 13b is in contact, the rail bracket 13 tends to deform outward in the width direction. The side surfaces of the protruding portions 31a and 32a shown in FIGS. 6 and 8 to 10 abut against the inner wall surface of the insertion hole 13d, thereby making it possible to stop the movement of the extension portion 13b outward in the width direction. Thereby, the displacement of the rail bracket 13 outward in the width direction can be suppressed.

[0048] The lower surface 13e of the extension portion 13b and the upper surface 31c of the lock bracket 31 are substantially parallel opposing surfaces, and a space is provided between the lower surface 13e and the upper surface 31c of the lock bracket 31. Further, in the present embodiment, a gap L between the lower surface 13e of the extension portion 13b and the end face 31b of the lock bracket 31 suppresses the generation of abnormal noise.

[0049] In the present embodiment, two insertion holes 13d through which the protruding portions 31a and 32a are inserted are formed in the extension portion 13b in the front-rear direction. A plurality of protruding portions 31a and 32a are provided on the lock bracket 31 and the cable bracket 32 in accordance with the positions of the insertion holes 13d. By forming the insertion holes 13d in the front-rear direction, displacement in the width direction can be efficiently suppressed. Further, in the present embodiment, the protruding portions 31a and 32a are provided by bending the ends of the lock bracket 31 and the cable bracket 32 in an L shape. By forming with two members, the strength of the protruding portion is improved. When the strength is sufficient, the protruding portions 31a and 32a may be formed by either the lock bracket 31 or the cable bracket 32.

[0050] As shown in Fig. 8, a gap K is formed between the inner wall surface of the insertion hole 13d and the protruding portions 31a and 32a. When a predetermined load is applied, after the lower surface 13e comes into contact with the end surfaces 31b and 32b, the protruding portions 31a and 32a come into contact with the inner wall surface of the insertion hole 13d, preventing the rail bracket 13 from moving outward in the width direction. The presence of the gap K suppresses the generation of abnormal noise and facilitates the assembly of inserting the protruding portions 31a and 32a into the insertion hole 13d.

[0051] As shown in Fig. 6, the connecting portion 15 (bracket main body 13a) of the base frame 12 is fixed to the rear portion of the upper rail 6 with bolts. Further, as shown in Fig. 4, the extending portion 13b of the rail bracket 13 is provided with a space (gap M) at a position overlapping the locking device 30 vertically in a side view (a view of the vehicle seat S seen from the left). By configuring in this way, a more compact arrangement can be achieved.

[0052] Also, as shown in Figs. 6 and 7, a notch 13f is formed in the rail bracket 13 between the bracket main body 13a and the extending portion 13b so as to avoid the locking device 30. By forming the notch 13f in this way, the interference between the rail bracket 13 and the locking device 30 is eliminated, and the extending portion 13b can be arranged more compactly.

[0053] As shown in Figs. 4, 8 to 10, a bulging portion 13c is formed on the rail bracket 13 so as to bulge outward in the width direction and extend in the front-rear direction. By providing the bulging portion 13c on the rail bracket 13, the rigidity of the rail bracket 13 is improved.

[0054] Also, as shown in FIG. 6, flange portions 13h and 14a are formed at the outer peripheral ends of the rail brackets 13 and the connecting brackets 14 that constitute the base frame 12. By forming the flange portions 13h and 14a, the rigidity of the base frame 12 is improved. Further, as shown in FIG. 9, a flange portion 13h is also formed at the outer peripheral end of the extending portion 13b of the rail bracket 13, so that it is formed in a U-shaped cross section that opens inward in the width direction of the vehicle seat S. By forming the cross section in a U-shape, the rigidity of the extending portion 13b is improved and the displacement of the seat back frame 10 is more suppressed.

[0055] Also, as shown in FIG. 7, in addition to the bolt holes 13g and the holes 13j for the connecting pipe, a plurality of through holes 13i and 13k are formed in the side surface portion of the extending portion 13b of the rail bracket 13. In particular, a through hole 13i is formed between the plurality of bolt holes 13g on the side surface portion of the bracket main body 13a. By forming the through holes 13i and 13k in the side surface portion, the weight reduction of the rail bracket 13 is achieved.

[0056] Also, as shown in FIG. 2, a rear bracket 23 that connects the lower portion (back side frame 11) of the seat back frame 10 and the upper rail 6 is provided at a position opposite to the base frame 12. At positions before and after sandwiching the reclining mechanism 19, the rail bracket 13 of the base frame 12 and the rear bracket 23 are connected by two connecting pipes 16 (connecting members). By connecting with the two connecting pipes 16, the rigidity of the seat back frame 10 is improved. Note that the connecting bracket 14 and the rail bracket 13 are fastened by bolts 17 at a position further forward than the connecting pipe 16 located on the front side among the two connecting pipes 16.

[0057] Another example of the restricting part 7 (restricting part 71) will be described with reference to FIG. 11. The restricting part 7 shown in FIGS. 6, 8 to 10 was configured by inserting the protruding parts 31a and 32a formed on the lock bracket 31 and the cable bracket 32 into the insertion hole 13d formed in the extending part 13b. The insertion hole 13d formed in the extending part 13b of the restricting part 71 shown in FIG. 11 is the same as that shown in FIG. 6, but the protruding parts are different. In the restricting part 71, a rod-shaped member 32c standing upright at the end of the cable bracket 32 is provided as the protruding part. At least the tip part of the rod-shaped member 32c is threaded and a nut 32d is provided at the tip part. The nut 32d prevents the extending part 13b from being displaced upward and coming off the rod-shaped member 32c. When the protruding amount of the rod-shaped member 32c is sufficiently long, the nut 32d may not be provided. In addition, the end of the lock bracket 31 is bent in an L shape, and when a predetermined load is applied, the end 31d of the lock bracket 31 abuts against the lower surface 13e of the extending part 13b.

[0058] As described above, the vehicle seat S of the present embodiment has been described with reference to the drawings. In the present embodiment, the insertion hole 13d was formed in the extending part 13b as the restricting part 7, and the protruding parts 31a and 32a were provided on the lock bracket 31 and the cable bracket 32, but this is just an example. As the restricting part, a protruding part protruding downward may be formed in the extending part 13b, and insertion holes may be formed in the lock bracket 31 and / or the cable bracket 32.

Explanation of Reference Numerals

[0059] S Vehicle seat (automobile 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 7, 71 Restricting part F Seat frame 10 Seat back frame 11 Back side frame 12 Base frame 13 Rail bracket 13a Bracket body 13b Extension part 13c Bulging part 13d Insertion hole 13e Bottom surface 13f Notch 13g Bolt hole 13h Flange part 13i, 13k Through hole 13j Hole for connecting pipe 14 Connecting bracket 14a Flange part 15 Connection part 16 Connecting pipe 17 Bolt 18 Pipe frame 19 Reclining mechanism 20 Seat cushion frame 21 Cushion side frame 22 Back panel 23 Rear bracket 30 Lock device (locking mechanism) 31 Lock bracket (member for rail) 31a Protrusion 31b, 31d End face (a part of the upper surface) 31c Upper surface 32 Cable bracket (member for rail) 32a Protrusion 32b End face (a part of the upper surface) 32c Rod-shaped member 32d Nut 40 Child seat 41 Lower anchor 42 Tether anchor Gaps K, L, M Thickness J

Claims

1. A vehicle seat, comprising: a seat body; a lower rail, an upper rail supported to be relatively movable with respect to the lower rail, and a pair of slide rails for sliding the seat body along the longitudinal direction of the vehicle seat; a connecting portion connecting the seat body and the upper rail; a connecting pipe spanned between the upper rails of the pair of slide rails; a bracket connected to the connecting pipe, wherein the bracket is provided as the connecting portion, an outer end portion of the bracket in the seat width direction is provided so as to be located outside an outer end portion of the upper rail, a part of a lower surface of the outer end portion of the bracket in the seat width direction is provided so as to be displaced downward when at least a predetermined load is applied, the bracket has an extending portion that projects in a cantilever manner without being fixed to the upper rail, and a gap is provided between a part of the extending portion and a part of an upper surface of a rail member constituting the upper rail when the predetermined load is not applied. The vehicle seat is characterized by this.

2. The vehicle seat according to claim 1, wherein an outer end portion of the bracket in the seat width direction is provided so as to be located outside an outer end portion of the pair of slide rails.

3. The vehicle seat according to claim 1 or 2, wherein the extending portion is disposed below the connecting pipe.

4. The vehicle seat according to any one of claims 1 to 3, wherein the extending portion is disposed in front of the connecting pipe.

5. The bracket and the rail member have a restricting portion for restricting movement of the bracket in the width direction of the vehicle seat, and the restricting portion is configured by forming an insertion hole in either one of the bracket and the rail member and having a protruding portion inserted into the insertion hole. The vehicle seat according to any one of claims 1 to 4 is characterized by this.

6. The pair of slide rails has a locking mechanism for restricting movement of the upper rail, and the protruding portion is provided in the locking mechanism. The vehicle seat according to claim 5 is characterized by this.

7. The bracket is fixed to a rear portion of the upper rail, and the bracket is provided at a position vertically overlapping with the lock mechanism in a side view, for the vehicle seat according to claim 6, characterized in that.

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