JP7158838B2 - vehicle seat - Google Patents

Description

The present disclosure relates to vehicle seats.

2. Description of the Related Art In a vehicle seat installed in a vehicle or the like, a cushion frame that forms the skeleton of a seat cushion is provided with a slide mechanism for sliding the seat cushion in the front-rear direction.

The slide mechanism has a fixed rail fixed to the floor of the vehicle and a movable rail slidable relative to the fixed rail. The movable rail is vertically fastened to a bracket, which is a part of the seat cushion, with fasteners (see Patent Document 1).

JP 2015-214329 A

For example, when the vehicle seat is slid forward, the rear end of the fixed rail is exposed from the seat cushion. Since the fixed rail has a concave cross section with an upper opening, foreign matter can easily enter the exposed fixed rail from above. Foreign matter entering the fixed rail may interfere with the operation of the slide mechanism.

An object of one aspect of the present disclosure is to provide a vehicle seat capable of suppressing entry of foreign matter into fixed rails.

One aspect of the present disclosure is a vehicle seat (1) comprising a seat cushion (2) and a seat back (3). A vehicle seat (1) comprises a cushion frame (4), a movable rail (6), a fixed rail (7) and a protection bracket (8). The cushion frame (4) constitutes the skeleton of the seat cushion (2). The movable rail (6) is fastened to the cushion frame (4) in the vertical direction of the seat. The fixed rail (7) supports the movable rail (6) so as to be slidable in a direction perpendicular to the seat vertical direction. The protective bracket (8) is configured to cover at least part of the fixed rail (7) from the outside.

Also, the protective bracket (8) has a first bracket (81) and a second bracket (82). A first bracket (81) is fixed to the fixed rail (7) and extends upward from the fixed rail (7) to the seat. The second bracket (82) is arranged above the movable rail (6) so as to overlap at least a portion of the fixed rail (7) in the vertical direction of the seat, and is fastened to the first bracket (81). be.

According to this configuration, the second bracket (82) arranged so as to overlap the fixed rail (7) in the vertical direction of the seat prevents foreign matter from entering the inside of the fixed rail (7) from above the seat. can.

Here, if there is another member above the seat of the fixed rail (7), the space (that is, the fastening locus) for fastening the movable rail (6) and the cushion frame (4) in the vertical direction is blocked, The movable rail (6) and the cushion frame (4) cannot be fastened.

In contrast, in the present disclosure, after fastening the movable rail (6) and the cushion frame (4) in the vertical direction, the second bracket (82) extends upward from the fixed rail (7) to the seat above the first bracket ( 81). Therefore, the second bracket (82) that protects the fixed rail (7) from above can be assembled without interfering with the fastening between the movable rail (6) and the cushion frame (4).

One aspect of the present disclosure may further include a rail cover (9) that covers the fixed rail (7) and the protective bracket (8) at least from above the seat. According to such a configuration, deterioration of the appearance of the vehicle seat (1) due to the exposed fixed rail (7) can be suppressed. In addition, since the second bracket (82) supports the rail cover (9) from below the seat, damage to the rail cover (9) when a force is applied from above the rail cover (9) due to being stepped on, etc., can be suppressed. .

In one aspect of the present disclosure, the fastening direction of the first bracket (81) and the second bracket (82) may be a direction perpendicular to the vertical direction of the seat and the sliding direction of the movable rail (6). With such a configuration, the fastening space between the first bracket (81) and the second bracket (82) can be minimized. As a result, the slide mechanism can be space-saving.

In one aspect of the present disclosure, the cushion frame (4) includes a plate-like mounting portion (41A) that extends in a direction perpendicular to the seat up-down direction and is fastened to the movable rail (6); A plate-shaped support portion (41B) extending above the seat and having a plate surface parallel to the sliding direction of the movable rail (6) may be provided. With such a configuration, the thickness in the rail width direction of the portion extending in the seat vertical direction from the cushion frame (4) toward the movable rail (6) is minimized, and the rail width direction of the second bracket (82) is minimized. length can be increased. As a result, the penetration effect of foreign matter can be promoted.

It should be noted that the symbols in each parenthesis above are examples showing the correspondence with the specific configurations and the like described in the embodiments described later, and the present disclosure is limited to the specific configurations and the like shown in the symbols in the parentheses. not something.

FIG. 1 is a schematic perspective view of a vehicle seat according to the embodiment. 2 is a schematic perspective view of a cushion frame and a slide mechanism of the vehicle seat of FIG. 1. FIG. 3 is a schematic perspective view of the slide mechanism of FIG. 2. FIG. 4A is a schematic cross-sectional end view along line IVA-IVA of FIG. 3, and FIG. 4B is a schematic cross-sectional end view along line IVB-IVB of FIG. 5 is a schematic perspective view of the slide mechanism of FIG. 3 before attaching the second bracket and rail cover; FIG. 6 is a schematic perspective view of the slide mechanism of FIG. 3 before attaching the rail cover; FIG.

Embodiments to which the present disclosure is applied will be described below with reference to the drawings.
[1. First Embodiment]
[1-1. Constitution]
A vehicle seat 1 shown in FIG. 1 includes a seat cushion 2 and a seat back 3 .

The seat cushion 2 is a part for supporting the buttocks and the like of the seated person. The seat back 3 is a part for supporting the back of the seated person.
The vehicle seat 1 further includes two movable rails 6, two fixed rails 7, two protective brackets 8, and two rail covers 9, as shown in FIG.

The vehicle seat 1 of this embodiment is used as a seat for a passenger car. Directions in the following description and drawings refer to directions in a state where the vehicle seat 1 is assembled to a vehicle (that is, a vehicle). Further, in this embodiment, the seat width direction coincides with the lateral direction of the vehicle, and the front of the seat coincides with the front of the vehicle.

Furthermore, the "seat lower side" in this embodiment means the direction in which the load of the occupant is applied to the seat cushion 2, and the "seat upper side" means the direction opposite to the "seat lower side". That is, the "vertical direction of the seat" corresponds to the thickness direction of the seat cushion 2, and when the two fixed rails 7 are fixed to the floor of the vehicle, the "vertical direction of the seat" corresponds to the vertical direction.

<Cushion frame>
The seat cushion 2 has a cushion frame 4 that constitutes the skeleton of the seat cushion 2 .
The cushion frame 4 has two connection brackets 41 and two side frames 42, as shown in FIG.

The two side frames 42 are panel-shaped members spaced apart in the seat width direction. The two side frames 42 are connected in the seat width direction by a plurality of pipes 43 .

The two connection brackets 41 are each fixed to one side frame 42 and extend downward from the side frame 42 to the seat. Each connection bracket 41 is fixed to the movable rail 6 by fastening, as shown in FIGS. 3 and 4B. Each connection bracket 41 is made of metal.

As shown in FIGS. 4A and 4B, each connection bracket 41 includes a plate-like mounting portion 41A extending in a direction perpendicular to the seat up-down direction, a seat up-down direction and a sliding direction of the movable rail 6 (in this embodiment, the seat front and rear). direction). A cross section of each connection bracket 41 perpendicular to the seat front-rear direction is L-shaped.

The mounting portion 41A abuts the upper wall 6A of the movable rail 6, which will be described later, so as to overlap from above the seat, and is fastened to the upper wall 6A with a bolt 11A and a nut 11B. The bolt 11A penetrates the mounting portion 41A and the movable rail 6 in the vertical direction of the seat.

The support portion 41B extends from one end of the attachment portion 41A in the seat width direction toward the upper side of the seat and penetrates a slit 93 of the rail cover 9, which will be described later. A plate surface of the support portion 41B is parallel to the sliding direction of the movable rail 6 . Further, the support portion 41B is connected to the side frame 42 via the link 44, as shown in FIG.

<Movable rail>
The two movable rails 6 are so-called upper rails and are made of metal. The two movable rails 6 are combined with two fixed rails 7, which will be described later, to form a power or manual slide mechanism. Each movable rail 6 extends in the seat front-rear direction and is configured to be slidable in the seat front-rear direction with respect to each fixed rail 7 .

Each movable rail 6 is fastened to each connection bracket 41 of the cushion frame 4 in the vertical direction of the seat, as described above. Each movable rail 6 is fixed to each connection bracket 41 at a plurality of positions in the seat front-rear direction.

As shown in FIGS. 4A and 4B, each movable rail 6 extends in a direction perpendicular to the up-down direction of the seat, and is arranged on an upper wall 6A facing the cushion frame 4 and on both sides of the upper wall 6A in the rail width direction. It has two side walls 6B and 6C that face each other in the width direction. The two side walls 6B and 6C respectively extend downward from both ends of the upper wall 6A in the rail width direction, and further curve outward in the rail width direction and upward.

Here, the “rail width direction” means a direction perpendicular to the seat vertical direction and the sliding direction of the movable rail 6 . In addition, in this embodiment, the rail width direction coincides with the seat width direction.

<Fixed rail>
The two fixed rails 7 are so-called lower rails and are made of metal. As shown in FIG. 2, the two fixed rails 7 each support one movable rail 6 so as to be slidable in the vertical direction. The two fixed rails 7 are spaced apart in the rail width direction.

Each fixed rail 7 extends in the seat front-rear direction. Each fixed rail 7 has a bottom wall 7A extending in a direction perpendicular to the seat up-down direction, and two side walls 7B and 7C arranged on both sides of the bottom wall 7A in the rail width direction and facing each other in the rail width direction. The bottom wall 7A faces the top wall 6A of each movable rail 6. As shown in FIG.

As shown in FIGS. 4A and 4B, the two side walls 7B and 7C rise upward from both ends of the bottom wall 7A in the rail width direction, and further curve inward and downward in the rail width direction of the fixed rail 7. there is That is, the two side walls 7B and 7C each form a groove-shaped space that is open at the bottom and extends in the sliding direction.

The curved tip portions of the two side walls 6B and 6C of each movable rail 6 are inserted into groove-like spaces formed by the two side walls 7B and 7C of each fixed rail 7, respectively. By arranging the side walls 6B and 6C of each movable rail 6 and the side walls 7B and 7C of each fixed rail 7 so as to sandwich each other's tip portions in this way, the movement of each movable rail 6 in the seat width direction is restricted. It is

In this embodiment, a space sandwiched between the ends of the side walls 7B and 7C of the fixed rail 7 and the side walls 6B and 6C of the movable rail 6 in the vertical direction of the seat, the bottom wall 7A of the fixed rail 7 and the movable rail Sliding members 10A and 10B are arranged in spaces sandwiched in the vertical direction of the seat by the side walls 7B and 7C of 6, respectively.

Each fixed rail 7 may be fixed to the floor of the vehicle, or, for example, the end of each fixed rail 7 on the rear side of the seat may be detachably attached to the floor of the vehicle so that the vehicle seat 1 can be folded. may have been

<Protection bracket>
The two protection brackets 8 are members that cover at least a portion of the two fixed rails 7 from the outside. The protective bracket 8 has higher mechanical strength than the rail cover 9 and is made of metal, for example.

Each protective bracket 8 has a first bracket 81 and a second bracket 82, as shown in FIGS. 3 and 4A, 4B.
The first bracket 81 is a plate-shaped member that is fixed to the fixed rail 7 and extends from the fixed rail 7 to the upper side of the seat. The first bracket 81 has a bottom wall 81A and two side walls 81B and 81C, as shown in FIG. 4A.

The bottom wall 81A extends along the bottom wall 7A of the fixed rail 7. As shown in FIG. Specifically, the bottom wall 81A abuts on the bottom wall 7A of the fixed rail 7 from below the seat so as to overlap.

Two side walls 81B, 81C extend along each side wall 7B, 7C of the fixed rail 7 respectively. Specifically, the two side walls 81B and 81C respectively extend from both ends of the bottom wall 81A in the rail width direction toward the upper side of the seat and overlap the two side walls 7B and 7C of the fixed rail 7 from the outside. in contact with That is, the two side walls 81B and 81C are arranged so as to sandwich the two side walls 7B and 7C in the rail width direction. Also, the two side walls 81B and 81C are fixed to the fixed rail 7 by welding or fastening. Note that the bottom wall 81A may be fixed to the fixed rail 7 by welding or fastening.

One side wall 81C of the two side walls 81B and 81C extends above the fixed rail 7 to the seat. A stud bolt 83 is attached to the side wall 81</b>C at a position above the seat relative to the fixed rail 7 . The stud bolt 83 extends toward the outside of the fixed rail 7 in a direction perpendicular to the seat vertical direction and the sliding direction of the movable rail 6 (that is, the rail width direction). Further, the end portion of the side wall 81C above the seat is curved in a direction parallel to the bottom wall 81A.

The second bracket 82 is a plate-like member arranged at a position above the seat relative to the movable rail 6 so as to face the bottom wall 7A of the fixed rail 7 . Also, the second bracket 82 is fastened to the first bracket 81 . The second bracket 82 has a top wall 82A and side walls 82B.

The top wall 82A extends in a direction parallel to the bottom wall 7A of the fixed rail 7 above the top wall 6A of the movable rail 6 and above the seat. The upper wall 82A is arranged at a position overlapping with a part of each of the upper wall 6A of the movable rail 6 and the bottom wall 7A of the fixed rail 7 in the vertical direction of the seat. As shown in FIG. 4B, the lower surface of the upper wall 82A faces at least part of the fastening portion (that is, the bolt 11A and nut 11B) between the movable rail 6 and the connection bracket 41. As shown in FIG. Further, the upper wall 82A is arranged at a position not overlapping the slit 93 of the rail cover 9 in the vertical direction of the seat.

The side wall 82B extends downward from one end of the upper wall 82A in the rail width direction. The side wall 82B extends in a direction perpendicular to the rail width direction and partially overlaps the side wall 81C of the first bracket 81 in the rail width direction.

A hole through which a stud bolt 83 passes is provided in a portion of the side wall 82B that overlaps the first bracket 81 . A nut 84 is screwed onto the portion of the stud bolt 83 that passes through the second bracket 82 , and the first bracket 81 and the second bracket 82 are fastened together. That is, the fastening direction of the first bracket 81 and the second bracket 82 is the rail width direction. Moreover, as shown in FIG. 3, the first bracket 81 and the second bracket 82 are fastened at a plurality of points in the sliding direction.

<Rail cover>
As shown in FIG. 2, the rail cover 9 is a cover that covers a portion of the fixed rail 7 behind the seat from above the seat and from both sides in the rail width direction. Also, the rail cover 9 covers at least the second bracket 82 of the protective bracket 8 from above the seat.

The rail cover 9 has a base portion 91 and a cover portion 92 as shown in FIG. 4A.
The base material portion 91 constitutes the inner layer of the rail cover 9 and supports the cover portion 92 . The base material portion 91 is molded, for example, from resin. The base member 91 has an upper wall 91A extending in a direction perpendicular to the vertical direction of the seat, and two side walls 91B and 91C extending downward from the upper wall 91A.

A top wall 91A of the base member 91 faces the bottom wall 7A of the fixed rail 7 and the top wall 6A of the movable rail 6 . One side wall 91B of the base member 91 faces the side wall 81B of the first bracket 81 of the protective bracket 8 . The remaining side wall 91C of the base portion 91 faces the stud bolt 83 of the protective bracket 8. As shown in FIG.

The cover portion 92 constitutes the outer layer of the rail cover 9 and is a portion having a design. The cover portion 92 is made of, for example, a woven fabric, a non-woven fabric, or the like using fibers. The cover portion 92 is arranged to cover the outer surface of the base portion 91 .

A slit 93 extending in the sliding direction is formed in the surface of the rail cover 9 above the seat, as shown in FIG. As shown in FIG. 4A, the slit 93 is provided so as to pass through the cover portion 92 in the vertical direction of the seat. An opening 91</b>D is provided at a position overlapping the slit 93 of the base member 91 .

As the movable rail 6 slides, the connection bracket 41 of the cushion frame 4 moves in the sliding direction while passing through the slit 93 in the vertical direction of the seat.
Note that the base member 91 and the protection bracket 8 may be in contact with each other, or may be separated from each other. In this embodiment, the base member 91 has a plurality of protrusions 91E that protrude downward from the upper wall 91A. The plurality of protrusions 91E are in contact with the upper wall 82A of the second bracket 82 of the protective bracket 8 from above the seat.

<How to assemble the protective bracket and rail cover>
The protective bracket 8 and rail cover 9 are assembled to the movable rail 6 and fixed rail 7 by the following procedure.

First, as shown in FIG. 5, the connection bracket 41 is fixed to the movable rail 6 by fastening the bolt 11A and the nut 11B in the vertical direction of the seat. 5, the first bracket 81 of the protective bracket 8 is attached to the fixed rail 7, but the second bracket 82 is not attached to the first bracket 81. As shown in FIG. Therefore, fastening space in the vertical direction of the seat is secured.

Next, as shown in FIG. 6, the second bracket 82 is arranged so as to overlap the side wall 81C of the first bracket 81 . Thereafter, a nut 84 is screwed from the outside of the second bracket 82 to each of the plurality of stud bolts 83 attached to the first bracket 81 . Thereby, the second bracket 82 is fastened to the first bracket 81 .

After fastening the first bracket 81 and the second bracket 82, the rail cover 9 is assembled so as to cover the protection bracket 8 from above the seat. Thereby, the slide mechanism shown in FIG. 3 is obtained.

[1-2. effect]
According to the embodiment detailed above, the following effects are obtained.
(1a) The second bracket 82 arranged so as to overlap the fixed rail 7 in the vertical direction of the seat can prevent foreign matter from entering the fixed rail 7 from above the seat.

In the vehicle seat 1 , after the movable rail 6 and the connection bracket 41 of the cushion frame 4 are vertically fastened, the second bracket 82 can be fastened to the first bracket 81 extending upward from the fixed rail 7 . Therefore, the second bracket 82 that protects the fixed rail 7 from above can be assembled without interfering with the fastening between the movable rail 6 and the cushion frame 4 .

(1b) The rail cover 9 can suppress deterioration of the appearance of the vehicle seat 1 due to the exposed fixed rails 7 . In addition, since the second bracket 82 supports the rail cover 9 from below the seat, damage to the rail cover 9 can be suppressed when force is applied to the rail cover 9 from above, such as by being stepped on.

(1c) Since the fastening direction of the first bracket 81 and the second bracket 82 is perpendicular to the seat up-down direction and the sliding direction of the movable rail 6 (that is, the rail width direction), the first bracket 81 and the second bracket Fastening space with 82 can be minimized. As a result, the slide mechanism can be space-saving.

(1d) Since the cushion frame 4 has the connection bracket 41, the thickness in the rail width direction of the portion extending in the vertical direction of the seat from the cushion frame 4 toward the movable rail 6 is minimized, and the rail width of the second bracket 82 is reduced. The length of the direction can be increased. As a result, the penetration effect of foreign matter can be promoted.

Further, by providing one slit 93 in the rail cover 9, a movable space for the cushion frame 4 in the rail cover 9 can be secured. As a result, there is no need to provide an opening or a plurality of slits in the rail cover 9, so the design of the rail cover 9 can be improved.

[2. Other embodiments]
Although the embodiments of the present disclosure have been described above, it is needless to say that the present disclosure is not limited to the above embodiments and can take various forms.

(2a) In the vehicle seat 1 of the above embodiment, the rail cover 9 is not an essential component. That is, the vehicle seat 1 does not necessarily have to include the rail cover 9 . Also, the rail cover 9 does not necessarily have a two-layer structure, and may have a single-layer structure or a structure of three or more layers.

(2b) In the vehicle seat 1 of the above embodiment, the first bracket 81 and the second bracket 82 do not necessarily need to be fastened in the rail width direction. If fastening space can be secured, the first bracket 81 and the second bracket 82 may be fastened in a direction intersecting the rail width direction.

Also, the first bracket 81 may have a stud nut instead of the stud bolt 83 . That is, the first bracket 81 and the second bracket 82 may be fastened by screwing a bolt into the stud nut from the outside of the second bracket 82 .

(2c) In the vehicle seat 1 of the above embodiment, the cushion frame 4 does not necessarily have the connection bracket 41 . For example, part of the side frame 42 may be directly fastened to the movable rail 6 . Further, the cross section of the connection bracket 41 perpendicular to the seat front-rear direction does not necessarily have to be L-shaped.

(2d) The vehicle seat 1 of the above-described embodiment can be applied to a seat used in automobiles other than passenger cars, and a seat used in vehicles other than automobiles, such as railroad cars, ships, and aircraft.

(2e) The function of one component in the above embodiments may be distributed as multiple components, or the functions of multiple components may be integrated into one component. Also, part of the configuration of the above embodiment may be omitted. Also, at least a part of the configuration of the above embodiment may be added, replaced, etc. with respect to the configuration of the other above embodiment. It should be noted that all aspects included in the technical idea specified by the wording in the claims are embodiments of the present disclosure.

1... Vehicle seat, 2... Seat cushion, 3... Seat back,
4... Cushion frame, 6... Movable rail, 6A... Upper wall, 6B, 6C... Side wall,
7 Fixed rail 7A Bottom wall 7B, 7C Side wall 8 Protective bracket
9... Rail cover, 10A, 10B... Sliding member, 11A... Bolt, 11B... Nut,
41... Connection bracket, 41A... Mounting part, 41B... Support part, 42... Side frame,
43... Pipe, 44... Link, 81... First bracket, 81A... Bottom wall,
81B, 81C... side wall, 82... second bracket, 82A... upper wall,
82B, 82C... side wall, 83... stud bolt, 84... nut, 91... base portion,
91A... Upper wall, 91B, 91C... Side wall, 91D... Opening, 91E... Convex part,
92... Cover portion, 93... Slit.

Claims (4)

A vehicle seat comprising a seat cushion and a seat back,
a cushion frame that forms the skeleton of the seat cushion;
a movable rail fastened to the cushion frame in the vertical direction of the seat;
a fixed rail that supports the movable rail so as to be slidable in a direction perpendicular to the vertical direction of the seat;
a metal protective bracket configured to cover at least a portion of the fixed rail from the outside;
with
The protective bracket is
a first bracket fixed to the fixed rail and extending upward from the fixed rail;
a second bracket arranged above the movable rail so as to overlap at least a portion of the fixed rail in the vertical direction of the seat and fastened to the first bracket;
A vehicle seat. A vehicle seat according to claim 1,
A vehicle seat, further comprising a rail cover that covers at least the fixed rail and the protective bracket from above the seat. A vehicle seat according to claim 1 or claim 2,
A vehicle seat, wherein a fastening direction of the first bracket and the second bracket is perpendicular to a vertical direction of the seat and a sliding direction of the movable rail. A vehicle seat according to any one of claims 1 to 3,
The cushion frame is
a plate-like mounting portion extending in a direction perpendicular to the seat up-down direction and fastened to the movable rail;
a plate-shaped support portion extending upward from the mounting portion and having a plate surface parallel to the sliding direction of the movable rail;
A vehicle seat.

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