JP7099662B2 - Vehicle seat structure - Google Patents

Description

The present invention relates to a vehicle seat structure.

The following Patent Document 1 discloses a vehicle seat device. In this vehicle seat device, a two-seater seat and a one-seater seat are arranged side by side in the vehicle width direction. The two-seater seat has an engaging portion attached to the frame, and the one-seater seat has an engaged portion attached to the frame. The engaged part and the engaged part are allowed to move in the front-rear direction of the vehicle, and are engaged with each other when the two-seater seat is displaced substantially upward of the vehicle due to the seatbelt load at the time of a vehicle collision. do. As a result, the seatbelt load applied to the two-seater seat can be transmitted to the one-seater seat via the engaging portion and the engaged portion, and the load can be dispersed.

Japanese Patent No. 5206055

However, in the case of the above-mentioned prior art, the engaged portion and the engaged portion are attached to the frame of the vehicle seat, respectively. Therefore, when attaching the engaged portion and the engaged portion to the vehicle body, not only the dimensional variation of each of the engaged portion and the engaged portion, but also the dimensional variation of the frame and the mounting variation of the vehicle seat, etc. to be influenced. As a result, the engaged portion and the engaged portion may interfere with each other to hinder the movement of the vehicle seat in the vehicle front-rear direction. Therefore, it is necessary to strictly control the dimensions, and the above-mentioned prior art has room for improvement in this respect.

In consideration of the above problems, it is an object of the present invention to obtain a vehicle seat structure that facilitates dimensional control.

The vehicle seat structure according to the first aspect of the invention is provided between the vehicle floor and the vehicle seat, and supports the vehicle seat so as to be relatively movable in the vehicle front-rear direction with respect to the vehicle floor. It is provided between the pair of slide rails and the slide rails in the vehicle seat, at a position separated from the slide rails in the vehicle width direction, and is extended in the vehicle front-rear direction, in the vehicle seat and the vehicle vertical direction. The first locking member having the engaging portion separated from the vehicle is directly provided at a position corresponding to the first locking member on the vehicle floor and is extended in the front-rear direction of the vehicle to engage the first locking member. It has a second locking member having an engaged portion provided between the portion and the vehicle seat.

The vehicle seat structure according to the invention according to claim 2 is formed on the vehicle floor at at least one end of the second locking member in the vehicle front-rear direction in the vehicle seat structure according to claim 1. Engagement claws are formed that engage the through holes.

The vehicle seat structure according to the invention according to claim 3 is the vehicle seat structure according to claim 1 or 2, wherein the first locking member is a buckle anchor mounting portion and a lap anchor in the vehicle seat. It is provided near at least one of the mounting site and the side frame.

The vehicle seat structure according to the invention according to claim 4 is the vehicle seat structure according to any one of claims 1 to 3, wherein the engaging portion of the first locking member is viewed from the front of the vehicle. The second locking member is formed in a substantially U-shape that is open to the upper side of the vehicle, and the engaged portion of the second locking member is formed in a substantially U-shape that is opened to the lower side of the vehicle when viewed from the front of the vehicle. It is formed and at least a part of the engaged portion is inserted inside the engaged portion.

According to the first aspect of the present invention, a pair of left and right slide rails are provided between the vehicle floor and the vehicle seat. The slide rails support the vehicle seats so that they can move relative to the vehicle floor in the front-rear direction of the vehicle. Further, a first locking member extended in the front-rear direction of the vehicle is provided between the slide rails of the vehicle seat and at a position separated from the slide rail in the vehicle width direction . The first locking member has an engaging portion separated from the vehicle seat in the vertical direction of the vehicle. On the other hand, a second locking member extended in the front-rear direction of the vehicle is directly provided at a position corresponding to the first locking member on the vehicle floor. The second locking member has an engaged portion provided between the engaging portion of the first locking member and the vehicle seat. Therefore, while the vehicle seat is allowed to move along the vehicle front-rear direction, when the vehicle seat is displaced substantially upward of the vehicle due to the seatbelt load at the time of vehicle collision, the engaged portion becomes the engaged portion. Engage in. As a result, the seatbelt load applied to the vehicle seat can be transmitted to the vehicle floor via the engaging portion and the engaged portion to disperse the load.

By the way, it is desirable that the engaged portion of the second locking member and the engaging portion of the first locking member do not normally interfere with each other so as not to hinder the movement of the vehicle seat along the vehicle front-rear direction. However, even if the engaged portion and the engaged portion are separated from each other, the engaged portion and the engaged portion may interfere with each other due to the influence of the accuracy of the vehicle seat itself and the mounting accuracy of the vehicle seat. be. On the other hand, in the present invention, since the second locking member is directly provided on the vehicle floor instead of the vehicle seat, the dimensional accuracy of the second locking member alone and the dimensional accuracy of the second locking member on the second locking member side Only the mounting accuracy of this on the vehicle floor needs to be considered. That is, the dimensions that need to be managed can be reduced.

According to the second aspect of the present invention, an engaging claw is formed at at least one end of the second locking member in the vehicle front-rear direction. The engaging claws engage the through holes formed in the vehicle floor. Therefore, when the second locking member is attached to the vehicle floor, the number of fasteners can be reduced, and even if the end is located in a place where a tool cannot enter, such as the lower side of the vehicle seat, the fastener is engaged with the vehicle floor. The load can be reliably transmitted to the vehicle floor by combining them.

According to the third aspect of the present invention, since the first locking member is provided in the vicinity of at least one of the buckle anchor mounting portion, the lap anchor mounting portion, and the side frame in the vehicle seat, at the time of a vehicle collision. The seatbelt load can be reliably transmitted to the vehicle floor. That is, the seatbelt load is concentrated on the buckle anchor mounting portion and the lap anchor mounting portion on the vehicle seat when the vehicle collides. Further, a shoulder anchor is generally provided in the vicinity of the side frame in the vehicle seat, and the seat belt load is concentrated at the time of a vehicle collision as in the buckle anchor mounting portion and the lap anchor mounting portion. That is, since the first locking member is provided near the place where the seatbelt load is concentrated, the seatbelt load can be efficiently transmitted to the vehicle floor and the load can be dispersed.

According to the fourth aspect of the present invention, the engaging portion of the first locking member is formed in a substantially U shape open to the upper side of the vehicle when viewed from the front of the vehicle. On the other hand, the engaged portion of the second locking member is formed in a substantially U shape that is open to the lower side of the vehicle when viewed from the front of the vehicle. Therefore, the engaged portion and the engaged portion have a pair of side walls extending substantially in the vertical direction of the vehicle. As a result, the moment of inertia of area with respect to the bending in the vertical direction of the vehicle becomes large. Further, at least a part of the engaged portion is inserted inside the engaged portion. Therefore, when the seatbelt load at the time of a vehicle collision causes the vehicle seat to be displaced substantially upward of the vehicle, the seatbelt load is more efficiently applied to the vehicle floor via the engaged portion and the engaged portion. It can be transmitted to disperse the load.

The vehicle seat structure according to the first aspect of the present invention has an excellent effect of facilitating dimensional control.

The vehicle seat structure according to the present invention according to claims 2 to 4 has an excellent effect that the seatbelt load can be efficiently distributed to the vehicle floor.

It is a front view which shows the vehicle seat provided with the vehicle seat structure which concerns on one Embodiment. It is a front view which shows the skeleton structure of the vehicle seat provided with the vehicle seat structure which concerns on one Embodiment. It is a front view which shows the Z part in FIG. 1 in an enlarged manner. It is a schematic perspective view which shows the state which saw the vehicle seat provided with the vehicle seat structure which concerns on one Embodiment from the rear side of a vehicle. It is a vehicle side view which shows the vehicle seat provided with the vehicle seat structure which concerns on one Embodiment. FIG. 4 is a schematic perspective view showing a state in which the second locking member is attached to the vehicle floor with respect to FIG. 4. It is a front view corresponding to FIG. 3 which shows the main part of the vehicle seat structure which concerns on other embodiment.

Hereinafter, the vehicle seat 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6. The arrow FR appropriately shown in each figure indicates the vehicle front direction, the arrow UP indicates the vehicle upward direction, and the arrow LH indicates the vehicle left direction. Hereinafter, when the explanation is simply made using the front-rear, left-right, and up-down directions, unless otherwise specified, the front-rear direction of the vehicle front-rear direction, the left-right direction of the vehicle left-right direction (vehicle width direction), and the up-down direction of the vehicle up-down direction are shown. .. Further, in each drawing, some reference numerals may be omitted in order to make the drawings easier to see.

(Constitution)
As shown in FIG. 1, the vehicle seat 10 according to the present embodiment is a seat for three people, and is, for example, a second row or a third row seat of a vehicle (not shown) such as a minivan. ing. The vehicle seat 10 is attached to the vehicle floor 12 in a posture in which the front-rear, left-right, up-down directions coincide with the front-rear, left-right, up-down directions of the vehicle. The vehicle seat 10 has a configuration in which a one-seat seat 30 and a two-seat seat 70 are arranged side by side in the vehicle width direction. In the present embodiment, the two-seat seat 70 is arranged on the left side of the vehicle with respect to the one-seat seat 30, but the two-seat seat 70 is on the right side of the vehicle with respect to the one-seat seat 30. It may be configured to be arranged in. In that case, the configuration is symmetrical with the present embodiment.

The one-seat seat 30 and the two-seat seat 70 are provided with seat cushions 32 and 72 and seat backs 34 and 74, respectively. The one-seater seat 30 constitutes the right seat 10R of the three-seater vehicle seat 10, and the two-seater seat 70 constitutes the center seat 10S and the left seat 10L of the vehicle seat 10. In the vehicle seat 10, the occupants seated in the respective seats 10R, 10S, and 10L can wear the three-point seat belts 14R, 14S, and 14L, respectively.

In the one-seat seat 30, the lower end of the first frame 36 constituting the skeleton of the seat cushion 32 and the seat back 34 is connected to the vehicle floor 12 via the first slide mechanism 42 (see FIG. 2). A pad (not shown) constituting the cushion material of the seat cushion 32 and the seat back 34 is attached to the first frame 36, and the surface of the pad is covered with a skin 37 (not shown except in FIG. 1). Similarly, in the two-seat seat 70, the lower end portion of the second frame 76 constituting the skeleton of the seat cushion 72 and the seat back 74 is connected to the vehicle floor 12 via the second slide mechanism 88. A pad (not shown) constituting the cushion material of the seat cushion 72 and the seat back 74 is attached to the second frame 76, and the surface of the pad is covered with a skin 77 (not shown except for FIG. 1). There is.

As shown in FIG. 2, the second frame 76 of the two-seater seat 70 is set to be larger than the dimension of the first frame 36 in the vehicle width direction. Specifically, the second frame 76 constitutes the skeleton of the central seat 10S and the skeleton of the left seat 10L. Further, a three-point seat belt worn by an occupant seated in the central seat 10S is attached to the inner end portion in the vehicle width direction of the skeleton member that constitutes a part of the lower end portion of the second frame 76 below the vehicle on the central seat 10S side. A buckle 18S to which a tongue plate (not shown) of 14S (see FIG. 1) is connected is attached. First, the outline of the overall configuration of the one-seat seat 30 and the two-seat seat 70 will be described, and then the first locking member 48 and the second locking member 50, which are the main parts of the present embodiment, will be described.

(About a one-seat seat)
The first frame 36 of the one-seat seat 30 includes a cushion frame 38 that constitutes the skeleton of the seat cushion 32 and a back frame 40 that constitutes the skeleton of the seat back 34. The cushion frame 38 and the back frame 40 are configured by connecting, for example, a member made of sheet metal or a member made of a metal pipe. The cushion frame 38 has a substantially rectangular frame shape when viewed in the vertical direction of the vehicle, and the back frame 40 has a substantially rectangular frame shape when viewed in the front-rear direction of the vehicle.

The first slide mechanism 42 is a front-rear position adjusting mechanism for adjusting the position of the one-seat seat 30 in the front-rear direction of the vehicle, and is composed of left and right slide rails 42L and 42R extending in the front-rear direction of the vehicle. The left and right slide rails 42L and 42R include a lower rail 44 fixed to the vehicle floor 12 by means such as bolt fastening, and an upper rail 46 slidably supported in the vehicle front-rear direction with respect to the lower rail 44.

The rear end portion of the cushion frame 38 is rotatably connected to the lower end portion of the back frame 40 via a connecting shaft (not shown). This connecting shaft is provided so as to be located in front of the reclining mechanism 54, which will be described later, in a state where the back frame 40 is located in the upright position. Further, the front portion of the cushion frame 38 is connected to the front end portion of the upper rail 46 via the left and right link members 58 and the left and right brackets 60. The left and right link members 58 and the left and right brackets 60 are made of sheet metal, for example. The left and right brackets 60 are fixed to the front ends of the left and right upper rails 46 by means such as bolting.

A well-known reclining mechanism 54 is provided between the lower end of the back frame 40 and the rear end of the cushion frame 38. As a result, the inclination angle of the back frame 40 (seat back 34, see FIG. 1) with respect to the cushion frame 38 can be adjusted. The back frame 40 can be moved forward from the upright position shown in FIG. 2 to a forward tilted position (not shown).

In the one-seat seat 30 having the above configuration, the buckle 18R is attached to the inside in the vehicle width direction (on the left side of the vehicle). The buckle 18R is composed of a buckle body to which a tongue plate (not shown) provided on a seat belt 14R for the right seat 10R (see FIG. 1) is connected, and a buckle bracket (not shown) extending from the buckle body. ing. The buckle bracket is connected to the left side of the vehicle of the first frame 36 by using bolts and nuts (both not shown). The seatbelt 14R for the right seat 10R shown in FIG. 1 has one end locked to a take-up shaft of a retractor (not shown) provided on the right side of the vehicle, and the other end is for one person. It is locked to the vehicle floor 12 on the right side of the seat 30.

(About a two-seater seat)
As shown in FIG. 2, the second frame 76 of the two-seat seat 70 includes a cushion frame 78 constituting the skeleton of the seat cushion 72 (see FIG. 1) and a back frame 80 constituting the skeleton of the seat back 74. It is equipped with. The cushion frame 78 and the back frame 80 are configured by connecting, for example, a member made of sheet metal or a member made of metal pipe.

The second slide mechanism 88 is a front-rear position adjusting mechanism for adjusting the position of the two-seater seat 70 in the front-rear direction of the vehicle, and is composed of left and right slide rails 88R and 88L extending in the front-rear direction of the vehicle. The left and right slide rails 88R and 88L include a lower rail 90 fixed to the vehicle floor 12 by means such as bolt fastening, and an upper rail 92 slidably supported in the vehicle front-rear direction with respect to the lower rail 90.

A rear end portion of the cushion frame 78 is rotatably connected to the lower end portion of the back frame 80 via a connecting shaft (not shown). The connecting shaft is provided so as to be located in front of the reclining mechanism 100 in a state where the back frame 80 is located in the upright position. Further, the front portion of the cushion frame 78 is connected to the front end portion of the upper rail 92 via the left and right link members 104 and the left and right brackets 106. The left and right link members 104 and the left and right brackets 106 are made of sheet metal, for example. The left and right brackets 106 are fixed to the front ends of the left and right upper rails 92 by means such as bolting.

A well-known reclining mechanism 100 is provided between the lower end of the back frame 80 and the rear end of the cushion frame 78. As a result, the inclination angle of the back frame 80 (seat back 74, see FIG. 1) with respect to the cushion frame 78 can be adjusted. The back frame 80 can be moved forward from the upright position shown in FIG. 2 to a forward tilted position (not shown).

In the two-seater seat 70 having the above configuration, a buckle 18L for the left seat 10L is attached to a substantially central portion in the vehicle width direction. The buckle 18L is composed of a buckle main body 22 to which a tongue plate (not shown) provided on a seat belt 14L for the left seat 10L (see FIG. 1) is connected, and a buckle webbing 23 extending from the buckle main body 22. There is. The buckle webbing 23 is locked to the buckle anchor plate 97 (see FIG. 3). The buckle anchor plate 97 is fixed to the buckle anchor mounting portion 96A of the connecting plate 96 by using bolts (not shown) and nuts (not shown). As shown in FIG. 1, one end of the seat belt 14L for the left seat 10L is locked to a take-up shaft of a retractor (not shown) provided on the left side of the vehicle, and the other end thereof is It is locked to the vehicle floor 12 on the left side of the two-seater seat 70. Further, the seat belt 14S for the central seat 10S is a shoulder attached to the upper left side of the side frame 80A extending substantially in the vertical direction of the vehicle near the boundary between the left seat 10L and the central seat 10S in the back frame 80. One end is locked to the take-up shaft of the retractor 15 (see FIG. 2) as an anchor, and the other end is locked to the wrap anchor plate 99 (see FIG. 3). The lap anchor plate 99 is fixed to the lap anchor mounting portion 96B of the connecting plate 96 by using bolts (not shown) and nuts (not shown).

(Main part of this embodiment)
In the present embodiment, as shown in FIG. 2, a first locking member 48 is provided at a substantially central portion of the second frame 76 of the two-seat seat 70. Further, a second locking member 50 is provided at a position corresponding to the first locking member 48 on the vehicle floor 12. Hereinafter, each of the above components will be specifically described.

(About the first locking member)
As shown in FIG. 3, the first locking member 48 is made of sheet metal, for example, extends in the front-rear direction of the vehicle (see FIG. 5), and is bolted in the vicinity of the buckle anchor mounting portion 96A in the connecting plate 96. It is fixed using 48A and nut 48B. An engaging portion 49 is formed inside the first locking member 48 in the vehicle width direction (on the right side of the vehicle). The engaging portion 49 is a pair of side wall portions 49A whose plate thickness direction is substantially the vehicle width direction when viewed from the front of the vehicle, and a bottom wall portion 49B connecting the lower ends of the pair of side wall portions 49A to each other on the upper side of the vehicle. It is formed in a substantially U shape that is opened to. The engaging portion 49 is separated from the connecting plate 96 and thus the vehicle seat 10 in the vertical direction of the vehicle.

(About the second locking member)
Like the first locking member 48, the second locking member 50 is made of, for example, sheet metal, extends in the front-rear direction of the vehicle (see FIG. 5), and is the first locking member 48 on the vehicle floor 12. It is fixed in the vicinity by using bolts 68 (see FIG. 6) and nuts (not shown). An engaged portion 51 is formed on the outside of the second locking member 50 in the vehicle width direction (on the left side of the vehicle). The engaged portion 51 is a pair of side wall portions 51A whose plate thickness direction is substantially the vehicle width direction when viewed from the front of the vehicle, and an upper wall portion 51B connecting the upper ends of the pair of side wall portions 51A to each other below the vehicle. It is formed in a substantially U shape that is open to the side.

A part of the engaging portion 49 of the first locking member 48 is inserted inside the engaged portion 51 of the second locking member 50. Specifically, the side wall portion 49A inside the engaging portion 49 in the vehicle width direction is inserted between the pair of side wall portions 51A of the engaged portion 51. It should be noted that the engaged portion 49 and the engaged portion 51 are normally maintained in a state of being separated from each other.

As shown in FIG. 5, an engaging claw 53 is formed on the front end portion 50A of the second locking member 50. The engaging claws 53 are a base end portion 53A extending from the front end portion 50A of the second locking member 50 toward the front side of the vehicle, and a bending extending from the tip of the base end portion 53A toward the lower side of the vehicle. The portion 53B and the tip portion 53C extending from the lower end portion of the bent portion 53B to the front side of the vehicle are formed in a substantially crank shape when viewed from the side of the vehicle. The engaging claw 53 is inserted into a through hole 62 formed in the vehicle floor 12 from the upper side of the vehicle toward the lower side of the vehicle.

A positioning pin 64 is attached to the rear end portion 50B of the second locking member 50. The positioning pin 64 projects downward from the vehicle and is inserted into the positioning hole 66 formed in the vehicle floor 12. The second locking member 50 is fixed to the vehicle floor 12 by using bolts 68 (see FIG. 6) and nuts (not shown) in addition to the engaging claws 53 and the positioning pins 64.

(How to attach the second locking member)
Next, a method of attaching the second locking member 50 will be described. As shown in FIG. 4, the two-seater seat 70 of the vehicle seat 10 to which the first locking member 48 (see FIG. 5) is previously attached is attached to the vehicle floor 12 via the slide rails 88R and 88L. After that, slide it to the front side of the vehicle. In this state, the second locking member 50 is inserted from the rear side of the vehicle of the two-seater seat 70 into the engaged portion 51, and the side wall portion 49A of the first locking member 48 is inserted into the front of the vehicle (see FIG. 3). Slide to the side to insert the engaging claw 53 into the through hole 62 as shown in FIG. Further, the positioning pin 64 of the second locking member 50 is inserted into the positioning hole 66.

As shown in FIG. 6, the second locking member 50 temporarily fixed to the vehicle floor 12 via the engaging claw 53 and the positioning pin 64 is fixed to the vehicle floor 12 using bolts 68 and nuts (not shown). To. This completes the mounting of the second locking member 50.

Next, the operation and effect of this embodiment will be described.

In the present embodiment, as shown in FIG. 1, a pair of left and right slide rails 88R and 88L are provided between the vehicle floor 12 and the vehicle seat 10. The vehicle seats 10 are supported by the slide rails 88R and 88L so as to be relatively movable in the vehicle front-rear direction with respect to the vehicle floor 12. Further, a first locking member 48 extended in the front-rear direction of the vehicle is provided at a position different from the slide rails 88R and 88L in the vehicle seat 10. The first locking member 48 has an engaging portion 49 separated from the vehicle seat 10 in the vertical direction of the vehicle. On the other hand, a second locking member 50 extended in the front-rear direction of the vehicle is provided at a position corresponding to the first locking member 48 on the vehicle floor 12. The second locking member 50 has an engaged portion 51 provided between the engaging portion 49 of the first locking member 48 and the vehicle seat 10. Therefore, while allowing the vehicle seat 10 to move along the vehicle front-rear direction, when the vehicle seat 10 is displaced substantially upward of the vehicle due to the seatbelt load at the time of a vehicle collision, the engaging portion 49 is engaged. Engage with the engaged portion 51. As a result, the seatbelt load applied to the vehicle seat 10 can be transmitted to the vehicle floor 12 via the engaging portion 49 and the engaged portion 51 to disperse the load.

By the way, the engaged portion 51 of the second locking member 50 and the engaging portion 49 of the first locking member 48 normally interfere with each other so as not to hinder the movement of the vehicle seat 10 along the vehicle front-rear direction. It is desirable not to configure it. However, even if the engaging portion 49 and the engaged portion 51 are separated from each other, they are affected by the accuracy of the first locking member 48 and the second locking member 50 alone and the mounting accuracy of the vehicle seat 10. There is a possibility that the portion 49 and the engaged portion 51 interfere with each other. On the other hand, in the present embodiment, since the second locking member 50 is provided on the vehicle floor 12, the dimensional accuracy that needs to be considered on the second locking member 50 side is the second locking member. Only the dimensional accuracy of 50 units is available. That is, the dimensions that need to be managed can be reduced. This facilitates dimensional control.

Further, an engaging claw 53 is formed at the front end portion 50A of the second locking member 50 in the front-rear direction of the vehicle. The engaging claw 53 engages with the through hole 62 formed in the vehicle floor 12. Therefore, when the second locking member 50 is attached to the vehicle floor 12, the number of fasteners can be reduced, and even when the front end portion 50A is located in a place where tools cannot enter, such as the lower side of the vehicle seat 10, the vehicle The load can be reliably transmitted to the vehicle floor 12 by engaging with the floor 12.

Further, since the first locking member 48 is provided in the vicinity of the buckle anchor mounting portion 96A, the lap anchor mounting portion 96B, and the side frame 80A in the vehicle seat 10, the seatbelt load at the time of a vehicle collision is surely applied. It can be transmitted to the vehicle floor 12. That is, the seatbelt load is concentrated on the buckle anchor mounting portion 96A and the lap anchor mounting portion 96B in the vehicle seat 10 when the vehicle collides. Further, a retractor 15 is provided in the vicinity of the side frame 80A in the vehicle seat 10, and the seatbelt load is concentrated at the time of a vehicle collision as in the buckle anchor mounting portion 96A and the lap anchor mounting portion 96B. That is, since the first locking member 48 is provided in the vicinity of the portion where the seatbelt load is concentrated, the seatbelt load can be efficiently transmitted to the vehicle floor 12 to disperse the load.

Furthermore, the engaging portion 49 of the first locking member 48 is formed in a substantially U shape that is open to the upper side of the vehicle when viewed from the front of the vehicle. On the other hand, the engaged portion 51 of the second locking member 50 is formed in a substantially U shape that is open to the lower side of the vehicle when viewed from the front of the vehicle. Therefore, the engaging portion 49 and the engaged portion 51 have a pair of side wall portions 49A and 51A extending substantially in the vertical direction of the vehicle. As a result, the moment of inertia of area with respect to the bending in the vertical direction of the vehicle becomes large. Further, at least a part of the engaging portion 49 is inserted inside the engaged portion 51. Therefore, when the vehicle seat 10 is displaced substantially upward of the vehicle due to the application of the seatbelt load at the time of vehicle collision, the seatbelt load is applied to the vehicle floor 12 via the engaging portion 49 and the engaged portion 51. The load can be distributed more efficiently. As a result, the seatbelt load can be efficiently distributed to the vehicle floor 12.

In the present embodiment, the first locking member 48 and the second locking member 50 are configured to be provided between the pair of slide rails 88R and 88L, but the present invention is not limited to this, and as an example. It may be provided in other parts such as an overhang portion extending outward in the seat width direction from the slide rails 88R and 88L.

Further, the engaging portion 49 and the engaged portion 51 are formed in a substantially U shape when viewed from the front of the vehicle, but the present invention is not limited to this, and may be a flat plate shape as shown in FIG. Other shapes may be used.

Further, the second locking member 50 is provided with an engaging claw 53 at the front end portion 50A, but is not limited to this, and may be provided at the rear end portion 50B, or the front end portion 50A and the rear end portion 50B. It may be provided in both.

Furthermore, the first locking member 48 is provided in the vicinity of the buckle anchor mounting portion 96A, the lap anchor mounting portion 96B, and the side frame 80A in the vehicle seat 10, but is not limited to this, and the buckle anchor mounting portion 96A is not limited to this. , The configuration may be provided in the vicinity of at least one of the lap anchor mounting portion 96B and the side frame 80A, or may be a configuration provided in other portions.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above, and it is possible to carry out various modifications other than the above within a range not deviating from the gist thereof. Of course.

10 Vehicle seat 12 Vehicle floor 42L Slide rail 42R Slide rail 48 First locking member 49 Engagement part 50 Second locking member 51 Engagement part 53 Engagement claw 62 Through hole 80A Side frame 88L Slide rail 88R Slide rail 96A buckle anchor mounting part 96B wrap anchor mounting part

Claims (4)

A pair of left and right slide rails provided between the vehicle floor and the vehicle seat and supporting the vehicle seat so as to be relatively movable in the vehicle front-rear direction with respect to the vehicle floor.
An engaging portion provided between the slide rails in the vehicle seat and at a position separated from the slide rail in the vehicle width direction and extended in the vehicle front-rear direction, and separated from the vehicle seat in the vehicle vertical direction. The first locking member having
Engagement provided directly at a position corresponding to the first locking member on the vehicle floor and extended in the vehicle front-rear direction, and provided between the engaging portion of the first locking member and the vehicle seat. A second locking member with a joint and
Vehicle seat structure with. At least one end of the second locking member in the vehicle front-rear direction is formed with an engaging claw that engages with a through hole formed in the vehicle floor.
The vehicle seat structure according to claim 1. The first locking member is provided in the vicinity of at least one of a buckle anchor mounting portion, a lap anchor mounting portion, and a side frame in the vehicle seat.
The vehicle seat structure according to claim 1 or 2. The engaging portion of the first locking member is formed in a substantially U-shape that is open to the upper side of the vehicle when viewed from the front of the vehicle.
The engaged portion of the second locking member is formed in a substantially U shape that is opened to the lower side of the vehicle when viewed from the front of the vehicle , and at least a part of the engaged portion is inside the engaged portion. Is inserted,
The vehicle seat structure according to any one of claims 1 to 3.

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