JP2023066197A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat configured so that a seat back side frame can be suppressed from fracturing, at the time of collision of a vehicle.SOLUTION: A rear link 58A is constituted to include a rear link main body part 62 and a hook-shaped piece 64, where the rear link main body part 62 is arranged between a side frame 42 and a vertical wall part 30C when viewed from a back surface. Further, the hook-shaped piece 64 is hung down from the rear link main body part 62 and is formed in a hook-shape so as to stride across the vertical wall part 30C along a seat width direction. Therefore, when a collision load is transmitted to an anchor bracket 30 through the rear link 58A at the time of rear collision of a vehicle, the hook-shaped piece 64 formed in the rear link 58A contacts the anchor bracket 30. Because the hook-shaped piece 64 is hung down in a hook-shape from the rear link main body part 62, the hook-shaped piece 64 contacts the anchor bracket 30, so that collision energy is absorbed in a course of deformation of the hook-shaped piece 64, which can suppress a seat back side frame 54 from fracturing.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle seat.

Patent Literature 1 listed below discloses a technique relating to a vehicle seat provided with a lifter link mechanism for lifting and lowering a seat cushion.

In this prior art, when a large load (collision load) directed toward the rear side in the front-rear direction of the seat is input to the seat back due to a rear-end collision of a vehicle (hereinafter referred to as a "rear collision"), the large load is applied to the seat back. The other end in the longitudinal direction of the lifter link is connected through a lifter link in which one end in the longitudinal direction is connected to the lower end of the seatback side frame that constitutes the side part of the skeleton of the seatback. transmitted to the bracket. The bracket is fixed to a slide rail provided on the vehicle body floor along the vehicle front-rear direction, and the vehicle seat is connected to the slide rail via the bracket. Therefore, the large load transmitted to the bracket is transmitted to the vehicle body floor via the slide rail.

Japanese Patent Application Laid-Open No. 2020-93728

Here, for example, when the seat back side frame collides with the vehicle body floor via a slide rail or the like and a load (reaction force) exceeding a predetermined load is input from the vehicle body floor, the seat back side frame is moved in the seat back and forth direction. There is a possibility of bending along and breaking (so-called mackerel breakage).

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat capable of suppressing breakage of a seat back side frame in the event of a vehicle collision.

In order to solve the above-described problems, a vehicle seat according to the first aspect of the present invention is arranged on the outside in the seat width direction of a seat cushion frame, which is a skeleton of a seat cushion for a passenger to sit on. A pair of side frames extending in the longitudinal direction, brackets fixed to slide rails provided on the floor of the vehicle body and allowing the seat cushion to slide in the longitudinal direction of the seat, and front and rear portions of the seat cushion in the longitudinal direction of the vehicle. and is arranged with the direction along the longitudinal direction of the seat as the longitudinal direction, one end in the longitudinal direction is connected to the side frame, and the other end in the longitudinal direction is connected to the bracket to form the seat cushion frame. a lifter link that allows the bracket to move up and down, wherein the bracket is fixed to the slide rail and arranged along the vehicle width direction and the vehicle front-rear direction; and a vertically erected vertical wall portion. Of the lifter links, the rear link provided at the rear portion of the seat cushion in the longitudinal direction of the vehicle is positioned between the side frame and the vertical wall portion in a rear view. and a hook-shaped piece suspended from the rear link body and formed in a hook shape so as to straddle the vertical wall along the seat width direction. there is

The vehicle seat according to the first aspect of the invention includes a pair of side frames, a lifter link, and a bracket. The pair of side frames are arranged outside in the seat width direction of a seat cushion frame serving as a skeleton of a seat cushion on which an occupant sits, and are formed to extend in the seat front-rear direction.

The bracket is fixed to a slide rail provided on the floor of the vehicle body and allowing the seat cushion to slide in the longitudinal direction of the seat.

The lifter links are provided at front and rear portions of the seat cushion in the longitudinal direction of the vehicle. The lifter link is arranged with its longitudinal direction along the longitudinal direction of the seat, one longitudinal end of the lifter link is connected to the side frame, and the other longitudinal end of the lifter link is connected to the bracket. The lifter link enables the seat cushion frame to move up and down.

Here, the bracket includes a fixing portion and a vertical wall portion. The fixed portion is fixed to the slide rail and arranged along the vehicle width direction and the vehicle front-rear direction. Further, the vertical wall portion is erected from the seat width direction end portion of the fixed portion.

On the other hand, among the lifter links, the rear link provided at the rear portion of the seat cushion in the vehicle front-rear direction includes a rear link body portion and a hook-shaped piece. The rear link body portion is arranged between the side frame and the vertical wall portion when viewed from the rear. Further, the hook-shaped piece is suspended from the rear link main body and formed in a hook-like shape so as to straddle the vertical wall along the seat width direction.

For example, at the time of a rear-end collision of a vehicle, when a collision load directed rearward in the longitudinal direction of the vehicle is input to the seatback that supports the upper body of a seated occupant seated on the seat cushion, the lateral portion of the seatback skeleton is applied. A collision load is transmitted to the rear link from the lower end of the seatback side frame that constitutes the seat cushion frame. A collision load is transmitted to the bracket via the rear link.

In the present invention, in the rear link, a hook-shaped portion is formed so as to straddle the vertical wall portion along the seat width direction from the rear link body portion disposed between the side frame and the vertical wall portion in a rear view. By hanging the piece, a portion of the hook-shaped piece overlaps the vertical wall portion in a plan view.

Therefore, in the event of a rear-end collision of the vehicle, when a collision load is transmitted to the bracket via the rear link, the hook-shaped piece formed on the rear link contacts the bracket in the present invention. Since the hook-shaped piece hangs down from the rear link main body in a hook-like shape, when the hook-shaped piece contacts the bracket and deforms, the deformation of the hook-shaped piece absorbs the collision energy.

As a result, in the present invention, it is possible to suppress breakage of the seat back side frame (so-called mackerel breakage) in the event of a vehicle collision, compared to the case where the hook-shaped piece is not formed on the rear link main body. Become.

The vehicle seat according to the invention of claim 2 is the vehicle seat according to the invention of claim 1, wherein the vertical wall portion is erected from an inner end portion of the fixing portion in the seat width direction, The hook-shaped piece is bent inward in the seat width direction from a hanging portion that hangs down from the rear link body portion and a lower end of the hanging portion, and is arranged above the vertical wall portion in the seat up-down direction. and a hook portion that hangs downward in the seat vertical direction from the tip of the horizontal wall portion and faces the vertical wall portion.

In the vehicle seat according to the second aspect of the invention, the vertical wall portion formed on the bracket is erected from the inner end portion of the fixed portion in the seat width direction. On the other hand, the hook-shaped piece includes a drooping portion, a lateral wall portion and a hook portion. The hanging portion hangs down from the rear link main body portion, and the lateral wall portion is bent inward in the seat width direction from the lower end of the hanging portion, and is above the vertical wall portion forming a part of the bracket in the seat vertical direction. placed on the side. The hook portion hangs downward in the seat up-down direction from the tip of the lateral wall portion and faces the vertical wall portion forming part of the bracket.

As a result, when a collision load is transmitted to the bracket via the rear link in the event of a rear-end collision of the vehicle, the lateral wall portion forming part of the hook-shaped piece formed on the rear link in the present invention comes into contact with the bracket. . The hook-shaped piece is deformed through the lateral wall portion, and the collision energy is absorbed by the deformation of the hook-shaped piece.

In the vehicle seat according to the invention of claim 3, in the vehicle seat according to the invention of claim 1 or 2, the rear link has a lower side in the vertical direction of the seat from the rear link body portion. An extension piece is formed that extends toward the vertical wall portion and is arranged to face the hook portion with the vertical wall portion therebetween.

In the vehicle seat according to the third aspect of the invention, the rear link has an extension piece extending downward in the seat vertical direction from the rear link main body. The extending piece is arranged to face the hook portion with a vertical wall portion forming a part of the bracket therebetween.

In this way, the extending piece facing the hook portion is provided in the rear link body portion with the vertical wall portion constituting a part of the bracket therebetween, so that the rear link body portion abuts on the vertical wall portion of the bracket. Even if the rear link main body portion and the bracket are misaligned along the seat width direction, the hooking portion or the extending piece is brought into contact with the bracket, and the hooking portion or the extending piece is deformed. , it is possible to absorb the collision energy.

It should be noted that the extending piece and the hook need not necessarily face each other at approximately the same position in the longitudinal direction of the vehicle with the vertical wall portion interposed therebetween.

The vehicle seat according to the invention of claim 4 is the vehicle seat according to the invention of claim 3, wherein the vertical wall portion includes a cover member that closes the rear portion of the bracket in the seat front-rear direction. An engageable hole is formed, and in a state where the cover member is engaged with the hole, a portion of the cover member can be held between the hook-shaped piece and the extension piece.

In the vehicle seat according to the fourth aspect of the invention, a cover member is provided for closing the rear portion of the bracket in the seat front-rear direction. A vertical wall portion forming a part of the bracket is formed with a hole with which the cover member can be engaged. It can be sandwiched between the shaped piece and the extending piece.

In this way, a part of the cover member engaged with the hole formed in the vertical wall portion of the bracket is clamped by the hook-shaped piece and the extension piece formed on the lifter link main body, thereby reducing backlash of the cover member. Attachment is suppressed.

As described above, according to the vehicle seat of claim 1, it is possible to suppress breakage of the seat back side frame in the event of a vehicle collision.

According to the vehicle seat of claim 2, breakage of the seat back side frame can be suppressed in the event of a vehicle collision, compared to the case where the hook-shaped piece is not formed on the rear link main body. .

According to the vehicle seat of claim 3, even if the rear link body portion and the bracket are displaced along the seat width direction, the hook portion or the extending piece is brought into contact with the bracket to absorb the collision energy. can be absorbed.

In the vehicle seat according to the fourth aspect of the invention, a part of the cover member that closes the rear portion of the bracket is sandwiched between the hook-shaped piece and the extension piece, so that rattling of the cover member can be suppressed.

1 is a perspective view showing a vehicle seat according to this embodiment; FIG. FIG. 2 is an enlarged cross-sectional view of a main part for explaining a main part of the vehicle seat according to the present embodiment; 1 is an enlarged perspective view of a main part for explaining a main part of a vehicle seat according to this embodiment; FIG. 1 is an enlarged perspective view of a main part for explaining a main part of a vehicle seat according to this embodiment; FIG.

A vehicle seat 10 to which a vehicle seat frame structure according to an embodiment of the present invention is applied will be described below with reference to the drawings. An arrow FR, an arrow UP, an arrow RH, an arrow IN, and an arrow OUT shown in each figure respectively indicate the front (advance direction), the upper direction, the right direction, the inner side, and the outer side in the vehicle width direction. In the following description, when simply using front-rear, left-right, and up-down directions, front-rear in the vehicle front-rear direction, left and right in the vehicle left-right direction (vehicle width direction), and up and down in the vehicle vertical direction will be indicated, unless otherwise specified. do.

(Structure of vehicle seat frame structure)
First, the configuration of a vehicle seat 10 to which the vehicle seat frame structure according to the present embodiment is applied will be described.

As shown in FIG. 1, a vehicle seat 10 to which the vehicle seat frame structure according to the present embodiment is applied includes a seat cushion 12 on which an occupant sits, and a lower end at the rear end of the seat cushion 12. and a seat back 14 that supports the upper body of the occupant by being connected to the seat back 14 , and a headrest (not shown) is attached to the upper end of the seat back 14 .

On the other hand, a vehicle body floor (not shown) is provided with a pair of left and right slide rails 16 along which the vehicle seat 10 can slide. The vehicle seat 10 is provided with a lifter mechanism 18 , and the lifter mechanism 18 allows the vehicle seat 10 to move up and down (up and down) with respect to the left and right slide rails 16 . The vehicle seat 10 is provided with a buckle device 22 to which the seat belt 20 is connected.

Here, the vehicle seat 10 in this embodiment is provided so that an occupant faces the front of the vehicle when seated. It matches the direction of front, back, left, right, up and down.

Further, in the present embodiment, the vehicle seat 10 is used as the driver's seat of a right-hand drive vehicle, but it may be applied to the driver's seat of a left-hand drive vehicle, or may be applied to the front passenger's seat or rear seat. good. Note that when the configuration of the present embodiment is applied to the driver's seat of a left-hand drive vehicle, the left and right configurations are opposite to those of the present embodiment.

The pair of left and right slide rails 16 each has a lower rail 24 and an upper rail 26 . The lower rail 24 is arranged with its longitudinal direction extending in the front-rear direction, and the front and rear ends of the lower rail 24 are fixed to the vehicle body floor (not shown) via mounting brackets (not shown).

The upper rail 26 is arranged with its longitudinal direction extending in the front-rear direction, and is slidably supported on the lower rail 24 along the longitudinal direction. However, normally, the sliding of the upper rail 26 with respect to the lower rail 24 is restricted by a slide lock mechanism (not shown), and by operating the lock release lever 28, the slide restriction by the slide lock mechanism is released. ing.

An anchor bracket 30 is fixed to the upper surface of the rear portion of the upper rail 26 arranged on the left side of the vehicle seat 10 (in this case, the inner side in the vehicle width direction). As shown in FIG. 2, the anchor bracket 30 is formed in accordance with the width dimension of the slide rail 16, and its cross-sectional shape when cut along the width direction (vehicle width direction) of the slide rail 16 is approximately It forms a U shape.

Further, the anchor bracket 30 includes a fixed portion 30A fastened and fixed to the upper rail 26, and a pair of left and right vertical wall portions 30B and 30C standing from both ends of the fixed portion 30A in the seat width direction and facing each other. consists of The vertical wall portion 30B is arranged on the inner side in the vehicle width direction, and is formed to be higher than the vertical wall portion 30C arranged on the outer side in the vehicle width direction.

A lower end of a seat belt stay 34, which constitutes a part of the buckle device 22 shown in FIG. The belt stay 34 is rotatable about the axis of the anchor bolt 32 within a predetermined angle.

A buckle 36 is fixed to the upper end of the seat belt stay 34 . A tongue plate 38 attached to a seat belt 20 of a three-point seat belt system is connected to the buckle 36. When an occupant seated on the seat cushion 12 connects the tongue plate 38 to the buckle 36, the occupant is restrained by the seat belt 20.

On the other hand, the seat cushion 12 of the vehicle seat 10 includes a seat cushion frame 40 arranged above the left and right slide rails 16 . The seat cushion frame 40 has a substantially rectangular frame shape, and includes left and right side frames 42 and 44, a front frame 46 forming a front portion of the seat cushion frame 40, and a rear portion of the seat cushion frame 40. and a rear frame 48 that

The left and right side frames 42 and 44 are formed in an elongated shape from, for example, a sheet metal material, and are arranged along the front-rear direction. The side frames 42 are arranged on the inner side in the vehicle width direction, and the side frames 44 are arranged on the outer side in the vehicle width direction.

The front frame 46 is formed of, for example, a sheet metal material in an elongated shape, is arranged with its axial direction (longitudinal direction) extending along the left-right direction, and is bridged between the front end portions of the left and right side frames 42 and 44 . there is That is, both ends in the longitudinal direction of the front frame 46 are joined to the left and right side frames 42, 44, and the front ends of the left and right side frames 42, 44 are connected in the seat width direction by the front frame 46. .

A connecting pipe 50 is provided below the front frame 46 . The connecting pipe 50 forms part of the seat cushion frame 40 and also forms part of the lifter mechanism 18, which will be described later. The connecting pipe 50 is made of, for example, a metal pipe material, and spans between the front ends of the left and right side frames 42 and 44 with its axial direction (longitudinal direction) along the left-right direction.

Both ends of the connecting pipe 50 in the longitudinal direction are inserted through circular through-holes (not shown) formed in the front ends of the left and right side frames 42 and 44 and are retained by caulking or other means. As a result, the front ends of the left and right side frames 42, 44 are connected in the left-right direction by the connecting pipe 50, and the connecting pipe 50 rotates about the axis along the left-right direction with respect to the left and right side frames 42, 44. It is possible.

The rear frame 48 is formed of, for example, a metal pipe material, is arranged with its axial direction (longitudinal direction) extending in the left-right direction, and spans between the rear end portions of the left and right side frames 42 and 44 . ing. Both ends of the rear frame 48 in the longitudinal direction are inserted through circular through-holes formed in the rear ends of the left and right side frames 42 and 44 (not shown) and are retained by caulking or other means. there is

Thereby, the rear ends of the left and right side frames 42, 44 are connected to each other by a rear frame 48, and the rear frame 48 is rotatable about an axis along the left and right direction with respect to the left and right side frames 42, 44. It is said that

At the rear end portions of the left and right side frames 42, 44, the lower ends of the seat back side frames 54, which constitute the side portions of the seat back frame 52, which is the frame member of the seat back 14, are arranged inside in the vehicle width direction. The parts are connected via a known reclining mechanism. A cushion pad covered with a seat skin is attached to the seat cushion frame 40 and the seat back frame 52 .

On the other hand, as shown in FIGS. 1 and 3 , the lifter mechanism 18 includes a pair of left and right front links 56 provided between the front ends of the left and right side frames 42 and 44 and the front ends of the left and right upper rails 26 . and a pair of left and right rear links 58 provided between the rear ends of the left and right side frames 42 and 44 and the rear ends of the left and right upper rails 26 .

The left and right front links 56 (see FIG. 3) are made of, for example, a sheet metal material and are elongated in the front-rear direction. It is connected to a bracket 60 fixed to the front end portion, and is rotatable about an axis along the left-right direction with respect to the left and right upper rails 26 .

Circular through-holes (not shown) are formed in the longitudinal rear ends of the left and right front links 56, and the longitudinal rear ends of the connecting pipes 50 are inserted into the respective through-holes for welding. The longitudinal rear end portions of the left and right front links 56 and the connecting pipe 50 are joined by means such as the above.

As a result, the left and right front links 56 are connected to the front ends of the left and right side frames 42 and 44 via the connecting pipes 50, and the left and right side frames 42 and 44 are integrated with the connecting pipes 50 in the left-right direction. It is rotatable around an axis along the .

The left and right rear links 58 are made of, for example, a sheet metal material and are elongated in the front-rear direction. It is connected to the vertical wall portion 30C of the anchor bracket 30 fixed to the rear end side of the upper rail 26 via the connecting portion. Thereby, the left and right rear links 58 are rotatable about the axis along the left and right direction with respect to the left and right upper rails 26 .

Furthermore, circular through holes (not shown) are formed in the rear ends of the left and right rear links 58 in the longitudinal direction, respectively, and the longitudinal ends of the rear frame 48 are inserted through the respective through holes. The longitudinal rear end portions of the left and right rear links 58 and the rear frame 48 are joined by means such as welding. As a result, the left and right rear links 58 are connected to the rear ends of the left and right side frames 42 and 44 via the rear frame 48 , and the left and right rear links 58 are connected to the left and right side frames 42 and 44 integrally with the rear frame 48 . It is rotatable around an axis along the direction.

That is, with the above configuration, in the lifter mechanism 18, the front link 56, the rear link 58, the side frames 42 and 44, and the upper rail 26 constitute a four-bar link mechanism, and the seat cushion frame 40 is connected to the left and right slide rails 16. It is connected so that it can move up and down (up and down) with respect to.

Here, in the present embodiment, the anchor bracket 30 is arranged below the left and right rear links 58 in plan view. As shown in FIG. 3, a rear link 58A arranged on the inner side in the vehicle width direction of the left and right rear links 58 has a rear link 58A, as shown in FIGS. A hook-shaped piece 64 hangs down from the lower end of the body portion 62 . An extension piece 66 hangs down from the lower end of the rear link body portion 62 on the rear side of the hook-shaped piece 64 in the vehicle front-rear direction.

The rear link body portion 62 is arranged between the side frame 42 and the vertical wall portion 30C of the anchor bracket 30 when viewed from the rear. Further, the hook-shaped piece 64 is suspended from the rear link body portion 62 and formed in a hook-like shape so as to straddle the vertical wall portion 30C along the seat width direction.

Specifically describing the hook-shaped piece 64, the hook-shaped piece 64 includes a drooping portion 64A, a lateral wall portion 64B, and a hook portion 64C. The drooping portion 64A hangs down from the rear link body portion 62, and the lateral wall portion 64B is bent inward in the seat width direction from the lower end of the drooping portion 64A so as to extend from the vertical wall portion 30C of the anchor bracket 30 in the seat vertical direction. is located above the

Further, the hook portion 64C hangs downward in the seat up-down direction from the tip of the lateral wall portion 64B and is formed so as to face the vertical wall portion 30C of the anchor bracket 30. As shown in FIG. Further, the hook portion 64C is arranged to face the extending piece 66 with the vertical wall portion 30C of the anchor bracket 30 interposed therebetween.

By the way, the rear end portion 31 of the anchor bracket 30 shown in FIG. 4 is provided with a cover member made of resin, although not shown. The cover member closes the rear end portion 31 of the anchor bracket 30 . As a result, the design when viewed from the rear seat side can be improved, foreign matter can be prevented from entering the anchor bracket 30, and the shoes or the like of the occupant seated in the rear seat can directly touch the anchor bracket 30. You can avoid interfering.

Here, the cover member is formed in a substantially box shape so as to cover the rear end portion 31 of the anchor bracket 30 from the outside. On the other hand, a hole portion 67 is formed in the vertical wall portion 30B of the anchor bracket 30, and a hole portion 68 is formed in the vertical wall portion 30C. Engagement portions formed on the side walls of the cover member can be engaged with the holes 67 and 68. With the engagement portions engaged with the holes 67 and 68, the anchor bracket is A cover member is engaged against 30 .

As described above, the horizontal wall portion 64B of the hook-shaped piece 64 formed on the rear link body portion 62 is arranged above the vertical wall portion 30C of the anchor bracket 30 in the seat vertical direction. A hook portion 64C of the hook-shaped piece 64 is formed to face the vertical wall portion 30C of the anchor bracket 30, and the hook portion 64C extends with the vertical wall portion 30C of the anchor bracket 30 therebetween. It is arranged facing the projecting piece 66 .

In the cover member engaged with the anchor bracket 30, the engaging portions formed in the cover member engage the holes 67 formed in the vertical wall portion 30B of the anchor bracket 30 and the hole portions 68 formed in the vertical wall portion 30C. In the engaged state, a part of the cover member moves the gap formed between the extending piece 66, the horizontal wall portion 64B and the hook portion 64C of the hook-shaped piece 64, and the vertical wall portion 30C to the vertical wall portion 30C. It is arranged so as to straddle the upper end of 30C. Thereby, the cover member is attached to the rear end portion 31 of the anchor bracket 30 .

(Function and Effect of Vehicle Seat)
Next, functions and effects of the vehicle seat 10 to which the vehicle seat frame structure according to the present embodiment is applied will be described.

In this embodiment, as shown in FIGS. 1 and 2, the anchor bracket 30 includes a fixing portion 30A and a vertical wall portion 30C. The fixing portion 30A is attached to the upper rail 26 of the slide rail 16. It is fixed and arranged along the vehicle width direction and the vehicle front-rear direction. Further, the vertical wall portion 30C is erected from the seat width direction inner end portion (end portion) of the fixed portion 30A.

On the other hand, of the left and right rear links 58, the rear link 58A arranged on the inner side in the vehicle width direction includes a rear link main body portion 62 and a hook-shaped piece 64. is arranged between the side frame 42 and the vertical wall portion 30C. Further, the hook-shaped piece 64 is suspended from the rear link body portion 62 and is formed in a hook shape so as to straddle the vertical wall portion 30C along the seat width direction.

At the time of a vehicle rear-end collision, when a collision load directed toward the rear side in the vehicle front-rear direction is input to the seat back 14 , the seat back side frame 54 , which constitutes the side portion of the frame of the seat back 14 , is pushed from the lower end to the rear. A collision load is transmitted to the rear link 58A via the frame 48. As shown in FIG. Then, the collision load is transmitted to the anchor bracket 30 via the rear link 58A.

In the present embodiment, in the rear link 58A, the hook extends from the rear link body portion 62 arranged between the side frame 42 and the vertical wall portion 30C in the rear view so as to straddle the vertical wall portion 30C along the seat width direction. By hanging down the hook-shaped piece 64 formed in a shape, a part of the hook-shaped piece 64 overlaps the vertical wall portion 30C in a plan view.

Therefore, when the collision load is transmitted to the anchor bracket 30 via the rear link 58A in the event of a rear-end collision of the vehicle, the hook-shaped piece 64 formed on the rear link 58A hits the anchor bracket 30 in this embodiment. touch. Since the hook-shaped piece 64 hangs down from the rear link main body 62 in a hook-like shape, when the hook-shaped piece 64 abuts against the anchor bracket 30 and the hook-shaped piece 64 is deformed, the deformation of the hook-shaped piece 64 causes Collision energy is absorbed.

As a result, in this embodiment, it is possible to suppress breakage of the seatback side frame 54 in the event of a vehicle collision, compared to the case where the hook-shaped piece 64 is not formed on the rear link body portion 62 . .

Moreover, in this embodiment, as shown in FIGS. 2 and 4, the hook-shaped piece 64 includes a drooping portion 64A, a lateral wall portion 64B, and a hook portion 64C. The drooping portion 64A hangs down from the rear link body portion 62, and the lateral wall portion 64B is bent inward in the seat width direction from the lower end of the drooping portion 64A so as to extend from the vertical wall portion 30C of the anchor bracket 30 in the seat vertical direction. is located above the The hook portion 64C hangs downward in the seat up-down direction from the tip of the horizontal wall portion 64B and faces the vertical wall portion 30C forming a part of the anchor bracket 30 .

Accordingly, in the present embodiment, when a collision load is transmitted to the anchor bracket 30 via the rear link 58A in the event of a rear-end collision of the vehicle, the rear link 58A constitutes a part of the hook-shaped piece 64 formed on the rear link 58A. The lateral wall portion 64B contacts the anchor bracket 30 . The hook-shaped piece 64 is deformed via the lateral wall portion 64B, and the deformation of the hook-shaped piece 64 absorbs the collision energy.

Further, in this embodiment, an extending piece 66 extends downward in the seat vertical direction from the rear link body portion 62 . The extension piece 66 is arranged to face the hook portion 64C of the hook-shaped piece 64 with the vertical wall portion 30C of the anchor bracket 30 interposed therebetween.

In this way, in the rear link body portion 62, by providing the extension piece 66 facing the hook portion 64C of the hook-shaped piece 64 with the vertical wall portion 30C of the anchor bracket 30 interposed therebetween, the anchor can be attached from the rear link body portion 62 to the anchor. Even if the rear link main body 62 and the anchor bracket 30 are displaced along the seat width direction when they are brought into contact with the vertical wall portion 30C of the bracket 30, the hook portion 64C or the extension piece 66 is brought into contact. and deforming the hook portion 64C or the extension piece 66, it is possible to absorb the collision energy.

Here, in the present embodiment, a cover member is provided on the rear end portion 31 side of the anchor bracket 30 in the seat front-rear direction to close the rear end portion 31 of the anchor bracket 30 . The vertical wall portions 30B and 30C of the anchor bracket 30 are formed with holes 67 and 68 with which the cover members can be engaged, respectively. A part of the cover member can be held between the hook portion 64C of the hook-shaped piece 64 and the extension piece 66. As shown in FIG.

In this manner, a portion of the cover member engaged with the holes 67 and 68 formed in the vertical wall portions 30B and 30C of the anchor bracket 30 is attached to the hook portion 64C formed in the rear link body portion 62 and the extension portion. By pinching with the protruding pieces 66, rattling of the cover member is suppressed.

Note that this cover member is not necessarily required. Further, the shape of the hook-shaped piece 64 is not limited to this, as long as the hook-shaped piece 64 can be deformed by contacting the vertical wall portion 30C of the anchor bracket 30 to absorb the collision energy.

In this embodiment, as shown in FIG. 3, the rear link main body portion 62 is arranged inside the side frame 42 in the seat width direction, and is positioned at the fixing portion 30A of the anchor bracket 30 in the seat width direction when viewed from the rear. It is arranged between the vertical wall portion 30C erected from the inner end of the side frame 42 and the side frame 42, but is not limited to this.

For example, although not shown, the rear link main body portion 62 is disposed outside the side frame 42 in the seat width direction, and is an outer end portion in the seat width direction of the fixed portion 30A between the side frame 42 and the anchor bracket 30 in a rear view. It may be arranged between the vertical wall portions 30B erected from the vertical wall portion 30B. In this case, the hook-shaped piece 64 is suspended from the rear link main body portion 62 and formed in a hook-like shape so as to straddle the vertical wall portion 30B along the seat width direction. Therefore, although not shown, the lateral wall portion of the hook-shaped piece is bent outward in the seat width direction from the lower end of the drooping portion.

Furthermore, in this embodiment, the rear link 58A on the side of the anchor bracket 30 arranged on the left side of the vehicle seat 10 has been described. Of course, the configuration of the rear link 58A may also be applied to the rear link 58 side on the bracket side arranged on the right side of 10 .

In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. In addition, it goes without saying that the scope of rights of the present invention is not limited to the above embodiments.

REFERENCE SIGNS LIST 10 vehicle seat 12 seat cushion 14 seat back 16 slide rail 30 anchor bracket (bracket)
30A Fixed part (bracket)
30C vertical wall (bracket)
40 seat cushion frame 42 side frame 44 side frame 56 front link (lifter link)
58 Rear link (lifter link)
58A Rear link 60 Bracket 62 Rear link body (rear link)
64 hook (rear link)
64A hanging part (rear link, hook-shaped piece)
64B Lateral wall (rear link, hook-shaped piece)
64C Hook 66 Extension piece 68 Hole

Claims (4)

a pair of side frames arranged outside in the width direction of the seat and extending in the front-rear direction of the seat among seat cushion frames serving as the skeleton of the seat cushion on which the occupant sits;
a bracket fixed to a slide rail provided on the floor of the vehicle body and allowing the seat cushion to slide in the longitudinal direction of the seat;
Provided at the front and rear portions of the seat cushion in the vehicle front-rear direction, and arranged with the direction along the seat front-rear direction as the longitudinal direction, one end in the longitudinal direction is connected to the side frame, and the other end in the longitudinal direction is connected to the side frame. a lifter link having a portion connected to the bracket and capable of lifting and lowering the seat cushion frame;
with
The bracket is
a fixing portion fixed to the slide rail and arranged along the vehicle width direction and the vehicle front-rear direction;
a vertical wall portion erected from an end portion of the fixed portion in the seat width direction;
consists of
Of the lifter links, the rear link provided at the rear portion of the seat cushion in the vehicle front-rear direction is
a rear link body portion arranged between the side frame and the vertical wall portion in a rear view;
a hook-shaped piece suspended from the rear link body portion and formed in a hook shape so as to straddle the vertical wall portion along the seat width direction;
A vehicle seat comprising: The vertical wall portion is erected from an inner end portion of the fixed portion in the seat width direction,
The hook-shaped piece is
a hanging portion hanging from the rear link main body;
a lateral wall portion that is bent inward in the seat width direction from the lower end of the hanging portion and arranged on the upper side of the vertical wall portion in the seat vertical direction;
a hook portion that hangs downward in the seat up-down direction from the tip of the horizontal wall portion and faces the vertical wall portion;
The vehicle seat according to claim 1, comprising: The rear link is formed with an extension piece that extends downward in the seat vertical direction from the rear link main body portion and is arranged to face the hook portion with the vertical wall portion therebetween. 3. The vehicle seat according to claim 2. A hole is formed in the vertical wall so that a cover member that closes the rear portion of the bracket in the front-rear direction of the seat can be engaged,
4. The vehicle seat according to claim 3, wherein a portion of the cover member can be held between the hook-shaped piece and the extending piece while the cover member is engaged with the hole.

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