JP6149569B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a seat back (a member that holds a standing state by being supported by a wall body in a vehicle compartment) that can stand up with respect to a seat cushion.

As this type of vehicle seat, a vehicle seat disclosed in Patent Document 1 is known. The vehicle seat includes a seat cushion, a seat back, and a seat back locking mechanism (an example of an engaging portion). The lock mechanism is provided on the upper side surface of the seat back (in a standing state) and can be engaged with a striker (an example of an engaged portion) of the wall body in the vehicle compartment.
In the known technique, the vehicle seat is disposed on the rear side of the vehicle compartment (in front of the cargo compartment). At this time, the seat back is disposed on the rear side (the cargo compartment side) of the seat cushion, and the lower end of the seat back is rotatably attached to the bracket on the floor of the vehicle compartment via the support shaft. In the known technology, the seat back is supported by the wall body by engaging the lock mechanism and the striker while keeping the seat back in an upright state by a rotation operation about the support shaft. It can be supported without rattling as much as possible).

JP2012-240609A

By the way, in the field of this type of vehicle, it is desirable that the space in the vehicle interior can be effectively used (for example, a large luggage space can be taken).
However, in the known technique, the seat back stands on the rear side of the seat cushion (the relative positional relationship with the seat cushion is unchanged). For this reason, the seat back in the standing state is a hindrance, and the configuration is somewhat unsuitable for expanding the cargo space.
Further, in the configuration of the known technique, when a relatively small passenger sits, the configuration tends to be poor. That is, a small occupant cannot reach the pedal unless the inclination angle of the thigh is made gentler than that of a large occupant. For this reason, a small occupant is seated while strongly pressing the thighs, calves and the like against the seat surface (in a state where the interference with the seat surface is large).
The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to arrange a seat back with good performance.

As means for solving the above problems, a vehicle seat of the first invention includes a seat cushion, a seat back that can be raised and lowered with respect to the seat cushion, and an engaging portion provided on the seat back.
In the present invention, the seat back in the standing state is supported by the wall body by engaging the engaging portion of the upper portion of the seat back with the engaged portion of the wall body in the vehicle compartment while keeping the seat back in the standing state. In this type of seat configuration, it is desirable that the seat back can be disposed with good performance (for example, a configuration that contributes to effective use of indoor space and improvement of seating properties).
Therefore, in the present invention, the vehicle seat is provided with a moving mechanism that moves the entire seat back forward and backward on the seat cushion. The seat back is displaced between a first state in which the seat back stands on the rear side of the seat cushion and a second state in which the seat cushion stands on the front side of the seat cushion with respect to the first state by the movement operation via the moving mechanism. Make it possible. In either still in the first state and a second state, by engaging the engaging portion with the engaged portion, and configured to seat back upright is supported by the wall, it engages in the first state The second portion of the wall body is engaged with the engaged portion disposed at the first position of the wall body, and the engaging portion in the second state is in front of the first position. It was set as the structure engaged with the to-be-engaged part arrange | positioned in this .
In the present invention, the arrangement position of the seat back (standing state) with respect to the seat cushion can be changed with good performance by the moving mechanism.
Further, the vehicle seat of the second invention is the vehicle seat of the first invention, wherein the moving mechanism is attached to the rod-like hinge portion extending in the seat width direction below the seat back and rotatable about the axis of the hinge portion. A support plate and a pin for connecting the lower part of the seat back opposite to the upper part to the support plate in a tiltable manner, and when the seat back is in an upright state, The rotation is locked and the seat back is tilted forward so that the support plate is unlocked via the link mechanism, and the seat back in the first state is brought forward with the pin as the base point. By pulling forward the seat back in the forward position and rotating the support plate relative to the hinge part, the entire seat back is moved from the first state. Moved to the front side of the seat cushion, a seat back that has moved to the front side of the seat cushion and configured to the second state by displacing from ahead state to the standing state.

  According to the first aspect of the present invention, the seat back can be disposed with good performance.

It is a schematic side view of a vehicle seat, (a) is a diagram in a first state, (b) is a diagram in a displacement operation, (c) is a diagram in a second state. . It is a back perspective view of a seat back and a part of wall. It is a perspective view which decomposes | disassembles and shows a seat back part. It is a perspective view of a part of the seat back. It is a side view of a part of the moving mechanism, (a) is a view when the seat back is in the first state, (b) is a view when the seat back is in the forward-turned state. It is a side view of a part of the moving mechanism, (a) is a view after the displacement operation of the seat back, (b) is a diagram in the second state of the seat back.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each figure, a reference F is attached to the front of the vehicle seat (front of the vehicle), a reference B is attached to the rear of the vehicle seat (rear of the vehicle), a reference UP is provided above the vehicle seat, and a reference DW is provided below the vehicle seat.
The vehicle seat 2 in FIG. 1 includes a seat constituent member (a seat cushion 4 and a seat back 6) and a moving mechanism RM described later. Each of these seat components includes a seat frame that forms a seat skeleton, a seat pad that elastically supports an occupant with a seat outer shape, and a seat cover that covers the seat pad (in FIG. 1, for the sake of convenience, a seat cushion). Only 4 seat pads are shown).
The seat back 6 (details will be described later) is a member that can be raised and lowered with respect to the seat cushion 4, and can be displaced, for example, from a forwardly lowered state to a standing state (see FIG. 1A).
In this embodiment, the seat back 6 is supported by the wall body SW in the vehicle compartment while standing on the seat cushion 4 (see FIG. 2). In this type of seat configuration, it is desired that the seat back 6 is arranged with good performance to contribute to effective utilization of the indoor space and improvement of seating property.

Therefore, in the present embodiment, the seat back 6 itself is moved on the seat cushion 4 with a configuration (moving mechanism RM) described later so that it can be displaced between the first state and the second state (see FIG. 1). reference).
The seat back 6 in the first state stands on the rear side of the seat cushion 4 (see FIG. 1A). Further, the seat back 6 in the second state stands on the front side of the seat cushion 4 relative to the first state (see FIG. 1C). For this reason, it can be set as the structure which contributes to the effective utilization of the interior space of a vehicle, and the improvement of seating property (seatability of a comparatively small passenger | crew) by making the seat back 6 into a 2nd state. Hereinafter, each configuration will be described in detail.

[Configuration of vehicle interior]
In the present embodiment, a plurality of engaged portions (first engaged portion S1, second engaged portion S2) are provided on the wall body SW in the vehicle compartment located on the side of the seat (see FIG. 2). ).
The first engaged portion S1 is a substantially U-shaped bar, and protrudes toward the vehicle compartment (toward the seat side). The second engaged portion S2 is a substantially U-shaped bar (same shape as the first engaged portion S1), and is disposed along the wall body SW and is projected toward the vehicle compartment. It can be displaced between.
In this embodiment, the first engaged portion S1 and the second engaged portion S2 are arranged in parallel in this order from the rear portion of the vehicle toward the front portion. In this way, the first engaged portion S1 is disposed on the rear side of the vehicle compartment and protrudes toward the seat back 6 (one side upper portion) in the first state. Further, the second engaged portion S2 is arranged on the front side in the vehicle compartment so that it can protrude toward the seat back 6 (one side upper portion) in the second state.

[Seatback]
The seat back 6 is a substantially rectangular (side view) member, and includes a lever member 6a, an engaging portion 6b, a grip portion 6c, and an interlocking protrusion 6d (see FIGS. 1 and 2).
The lever member 6a is an arm-like member that is attached to the upper portion (recess 6f) of the seat back 6, and can engage or disengage the engaged portions S1, S2 and the engaging portion 6b (details will be described later). It is.
The engaging portion 6b is a portion that can be engaged (disengaged) with respect to the engaged portions S1 and S2, and is provided on one side surface (side surface on the wall body SW side) of the seat back 6. The engaging portion 6b of the present embodiment is a hole portion (notched) that opens from the rear surface of the seat back 6 to one side surface, and has a dimension capable of inserting the engaged portions S1 and S2. And after inserting each to-be-engaged part S1, S2 in the engaging part 6b (hole part), the lever member 6a is operated and the hook part (illustration omitted) in the engaging part 6b is engaged part S1. , S2 is engaged or disengaged. In addition, in order to omit the lever member operation for engagement, it is only necessary to insert each engaged portion S1, S2 into the engaging portion 6b (the hook portion is temporarily moved in the unlocking direction by the pressure by the engaged portion). It is also possible to have a configuration in which these are engaged by adopting a configuration in which they are locked after moving.
The grip portion 6c (handle) is a belt body (mountain shape as viewed from above) extending in the seat width direction, and is disposed at the lower rear surface of the seat back 6. The central portion of the grip portion 6c is slightly separated from the seat back 6, and both ends of the grip portion 6c are fixed to the seat back 6, respectively.
The interlocking protrusion 6d (cylindrical portion) is disposed on the other side of the seat back 6 and protrudes in the seat width direction. In the present embodiment, the interlocking protrusion 6d is disposed in the vicinity of a later-described moving mechanism RM while being disposed on the lower side of the seat back 6.

[Movement mechanism]
The moving mechanism RM includes a support plate 2r, a leg portion Fr, a hinge portion Ar, a pair of hooks 4r and 6r, link mechanisms 8r, 10r, and 12r, and a plurality of pins B1 to B8 (details will be described later). (See FIGS. 2 and 3).
The support plate 2r is a substantially triangular flat plate material, and includes an arm portion 3r, a sliding hole portion H, and a plurality of through holes (reference numerals omitted, portions where pins described later are inserted) (see FIG. 3). ). The arm portion 3r is a substantially rectangular portion extending obliquely upward and rearward from the top side of the support plate 2r, and a through hole (reference number omitted) is provided on the tip side thereof. The sliding hole H is a through hole of the support plate 2r that slidably holds a later-described third pin B3. The sliding hole H of the present embodiment has a substantially arc shape (an arc that protrudes downward) extending in the front-rear direction of the seat, and is provided on the bottom side of the support plate 2r.
The leg portion Fr is a flat plate member that protrudes from a lower portion on one side of the seat back 6 (see FIG. 2). The upper side of the leg part Fr is rotatably attached to one side surface of the seat back 6, and the lower side of the leg part Fr is rotatably attached to a bracket BR described later.
The hinge portion Ar is a pipe member extending in the seat width direction, and serves as a rotation center during the rotation operation of a support plate 2r (leg portion Fr) described later.

The pair of hooks (the first hook 4r and the second hook 6r) are both substantially J-shaped members and can be engaged with a third pin B3 (described later) in the sliding hole H (see FIG. 3 See FIG. 6).
The base side of each hook 4r, 6r is circular, and a through hole (not shown) is provided at the center. A through-hole (reference numeral omitted) for attaching a link mechanism described later is provided in the upper part of the first hook 4r and the lower part of the second hook 6r. As will be described later, the first hook 4r is attached to the front side of the sliding hole portion H, and the second hook 6r is attached to the rear side of the sliding hole portion H.

The link mechanism (first link 8r, second link 10r, third link 12r) is a mechanism for linking the forward movement of the seat back 6 and the unlocking operation of the hooks 4r, 6r (FIG. 3). (See FIG. 6).
The first link 8r is a rectangular flat plate material, and through holes (reference numerals omitted) are provided at both ends. The second link 10r is a rod-shaped member having through holes (reference numerals omitted) at both ends, and has a length dimension capable of connecting the first link 8r and the first hook 4r in the attached state. The third link 12r is a rod-shaped member having through holes (reference numerals omitted) at both ends, and has a length dimension capable of connecting the first hook 4r and the second hook 6r in the attached state.

[Installation of seat back]
With reference to FIG. 1A and FIG. 2, the seat back 6 (first state) is attached to the pair of brackets BR via the moving mechanism RM while being arranged at the rear portion of the seat cushion 4.
Here, each of the pair of brackets BR is a substantially triangular (side view) flat plate material, which is disposed on the vehicle floor surface in a face-to-face manner and is disposed on both sides of the seat back 6 (see FIGS. 2 and 3). ). And the through-hole (code | symbol omission) which can insert hinge part Ar is formed in the top part side of one and the other bracket BR. The other bracket BR (bottom part rear side) is provided with a through hole (reference numeral omitted) into which the third pin B3 (one configuration of the moving mechanism RM) can be inserted (see FIG. 3).

In this embodiment, the seat back 6 (one side) is attached to one bracket BR via the leg portion Fr. Further, after the seat back 6 (the other side) is attached to the other bracket BR via the support plate 2r, the support plate 2r is covered with the shield SM.
At this time, the hinge portion Ar is attached between the pair of brackets BR (top side) in a bridging manner, and both end sides thereof are projected from the brackets BR. And the leg part Fr is rotatably attached to the hinge part Ar which protrudes from one bracket BR side.
Further, the support plate 2r is applied to the seat back 6 (other side surface) and the other bracket BR (see FIG. 3). In this state, the support plate 2r is rotatably attached to the hinge portion Ar protruding from the other bracket BR side via the second pin B2. Further, the seat back 6 and the arm portion 3r are rotatably attached via the first pin B1. At this time, the arm portion 3r is arranged below the rotation locus of the interlocking protrusion 6d, and the interlocking protrusion 6d rotates and moves around the arm portion 3r when the seat back 6 is tilted forward. .
Next, the third pin B3 is fixed to the other bracket BR while being inserted into the sliding hole H (rear end side). And it is set as the structure which 3rd pin B3 moves to the front-end side, moving relatively in the sliding hole part H as it transfers to a 2nd state from a 1st state.

Before and after the above operation, the pair of hooks 4r, 6r and the link mechanisms 8r, 10r, 12r are respectively attached to the support plate 2r (see FIGS. 3 to 6).
At this time, the first hook 4r is disposed on the front side of the sliding hole H, and the free end side of the first hook 4r is disposed in the sliding hole H and can be engaged with the third pin B3. State (locked state). The first hook 4r is rotatably attached to the support plate 2r via the fourth pin B4 while being urged in the locking direction (clockwise) by the first urging member SB1.
The second hook 6r is arranged on the rear side of the sliding hole H in the same arrangement state as the first hook 4r. The second hook 6r is rotatably attached to the support plate 2r via the fifth pin B5 while being urged in the locking direction (counterclockwise) by the second urging member SB2.

One end of the first link 8r is rotatably attached to the support plate 2r (arm portion 3r) via the first pin B1. At this time, the first link 8r is arranged in the middle of the rotation trajectory of the interlocking protrusion 6d as an inclined posture gradually facing upward as it goes to the front side of the seat. When the seat back 6 is tilted forward, the first link 8r is pressed against the interlocking projection 6d, and the first link 8r rotates downward about the first pin B1.
Further, the first link 8r and the first hook 4r are connected to each other by the second link 10r. At this time, one end of the second link 10r is rotatably attached to the other end of the first link 8r via the sixth pin B6. Then, the other end of the second link 10r is rotatably attached to the upper side of the base portion of the first hook 4r via the seventh pin B7.
Further, the first hook 4r and the second hook 6r are connected to each other by the third link 12r. At this time, one end of the third link 12r is rotatably attached to the upper side of the first hook 4r via the seventh pin B7. Then, the other end of the third link 12r is rotatably attached to the lower side of the base portion of the second hook 6r via the eighth pin B8.
In the present embodiment, the first link 8r rotates downward and the second link 10r moves downward in conjunction with the forward tilting operation of the seat back 6 (the pressing of the interlocking protrusion 6d) (see FIG. 4 to 6). By the downward movement of the second link 10r, the first hook 4r rotates counterclockwise around the fourth pin B4, and its free end side is separated from the sliding hole H (unlocked). ) Further, as the first hook 4r rotates, the third link 12r moves forward, so that the second hook 6r moves away from the sliding hole H while rotating clockwise around the fifth pin B5. (Unlocked)

[Seatback state displacement]
With reference to FIG. 1A and FIG. 2, the seat back 6 is set in the first state and is disposed on the rear side of the seat cushion 4. In this state, the seat back 6 in the standing state is supported by the wall body SW by the engagement of the first engaged portion S1 and the engaging portion 6b (see FIG. 2).
By the way, in the above-mentioned state, when the vehicle seat 2 is arranged in front of the cargo compartment, the standing seat back 6 becomes an obstacle, and the cargo compartment space is difficult to expand. Further, when the seat back 6 is disposed on the rear side of the seat cushion 4, for example, there is a possibility that the seatability of a relatively small passenger is impaired.

Then, after operating the lever member 6a to release the engagement between the first engaged portion S1 and the engaging portion 6b, the seat back 6 is displaced from the first state to the second state (see FIG. 1).
At this time, in the present embodiment, the seat back 6 is changed from the standing state to the forwardly-turned state by rotating (forwardly tilting) about the first pin B1 (free hinge) (see FIG. 1B and FIG. 4). reference). As the seat back 6 tilts forward (by the link mechanism), the second hook 6r is unlocked, and the relative movement of the third pin B3 within the sliding hole H is possible (support for the bracket BR). The relative rotation of the plate 2r is allowed (see FIGS. 3 and 5).
Next, the seat back 6 is pulled forward using the grip portion 6c as a handle (see FIGS. 1B and 2). At this time, the seat back 6 itself moves to the vehicle front side on the seat cushion 4 while the support plate 2r and the leg portion Fr rotate counterclockwise with the hinge portion Ar as the rotation center (FIGS. 1B and 3). See). As the support plate 2r rotates, the third pin B3 moves to the front end side while relatively moving in the sliding hole H (see FIG. 6).

Then, after the seat back 6 is moved forward, the seat back 6 is displaced from the forwardly tilted state to the standing state to be in the second state (see FIG. 1C).
In the present embodiment, as the seat back 6 rises (reversely tilts), the first hook 4r engages with the third pin B3 at the front end of the sliding hole H, and the relative rotation between the support plate 2r and the bracket BR is restricted. (See FIG. 6). Then, while the seat back 6 is erected, the second engaged portion S2 and the engaging portion 6b (projecting state) are engaged to support the standing seat back 6 on the wall SW (held in the second state). )it can.
Thus, by making the seat back 6 into the second state (moving forward), the luggage space can be expanded and the seating property of a relatively small passenger can be improved.

As described above, in this embodiment, the arrangement position of the seat back 6 (standing state) with respect to the seat cushion 4 can be changed with good performance by the moving mechanism RM.
And since the seat back 6 of a 1st state is arrange | positioned at the seat cushion 4 rear side, it can maintain suitably the seating property of a comparatively large passenger | crew. Further, since the seat back 6 in the second state is disposed at the front part of the seat cushion 4 than in the first state, the seat back 6 has a configuration that contributes to, for example, effective use of the indoor space and improvement of seating characteristics for a relatively small passenger.
For this reason, according to the present embodiment, the seat back 6 can be disposed with good performance.

[Modification]
Here, the moving mechanism can take various configurations in addition to the above-described configuration.
For example, in this modified example, by adopting a four-bar link structure as the moving mechanism, the seat back is displaced between the first state and the second state while standing.
As the four-bar link structure, for example, a structure in which the support plate and the bracket are connected by a pair of link arms (a substantially rectangular flat plate arranged in parallel) can be employed. And a seat back is made into the 1st state by making a pair of link arms into a standing state. Further, by tilting the pair of link arms forward, the seat back is displaced to the second state.
In this case, the seat back is once moved forward (over moved) from the second engaged portion, and then the second engaged portion is protruded. Then, the second engaged portion and the engaging portion are engaged while moving the seat back backward.

As another modification, the four-bar linkage mechanism and the movement mechanism RM of the embodiment can be used together as the movement mechanism.
In this case, the seat back is once inclined forward and then moved forward in this position. Then, the second engaged portion and the engaging portion are engaged in the same procedure as in the above-described modified example, but the excessive movement amount can be reduced by the amount of the forward tilt posture.

The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In this embodiment, although the example which arrange | positions the vehicle seat 2 in the front (vehicle rear part) of a luggage compartment was demonstrated, it is not the meaning which limits the arrangement position of a vehicle seat.
(2) Moreover, in this embodiment, the structure (shape, dimension, arrangement position, etc.) of engaging part 6b and to-be-engaged part S1, S2 was illustrated. These parts can take various configurations as long as they can be engaged and disengaged with each other. For example, the engaged portion (single) can be configured to be slidable forward and backward. Moreover, it can be set as the structure which accommodates and a to-be-engaged part with respect to the hole of a wall body. Further, the engaged portion can be provided on the wall body behind the seat so as to be engageable with the engaging portion on the rear surface of the seat back. In this case, it is possible to adopt a configuration in which the protruding amount of the engaged portion with respect to the wall body is changed (the protruding amount is reduced in the first state and the protruding amount is increased in the second state). The shape of the engaged portion may be various shapes such as a bar shape and a flat plate shape in addition to the U shape.
(3) The configuration of the present embodiment can be applied to all vehicle seats such as vehicles, aircraft, and trains.

2 Vehicle seat 4 Seat cushion 6 Seat back 6a Lever member 6b Engagement part 6c Grip part 6d Interlocking protrusion 6f Recess RM Movement mechanism 2r Support plate 3r Arm part H Sliding hole part 4r First hook 6r Second hook 8r Second One link 10r Second link 12r Third link Ar Hinge part B1-B8 Pin Fr Leg part BR Bracket S1 First engaged part S2 Second engaged part SW Wall body

Claims (2)

A seat cushion, a seat back that can be raised and lowered with respect to the seat cushion, and an engagement portion provided on the seat back, and the covering of the wall body in the vehicle compartment while keeping the seat back in an upright state In the vehicle seat having a configuration in which the seat back in the standing state is supported by the wall body by engaging the engagement portion at the upper part of the seat back with the engagement portion.
The vehicle seat is provided with a moving mechanism that moves the entire seat back back and forth on the seat cushion,
A first state in which the seat back is erected on the rear side of the seat cushion in a movement operation via the movement mechanism; and a second state in which the seat back is erected on the front side of the seat cushion than the first state ; And displaceable between
In any of the first state and the second state, the seat back in the standing state is supported by the wall body by engaging the engaging portion with the engaged portion ,
The engaging portion in the first state engages with the engaged portion disposed at the first position of the wall body, and the engaging portion in the second state is from the first position. A vehicle seat that is configured to engage with an engaged portion disposed at a second position of the wall body that is also on the front side . The moving mechanism includes a rod-like hinge portion extending in the seat width direction below the seat back, a support plate rotatably attached around an axis of the hinge portion, and the seat back opposite to the upper portion. And a pin for connecting the lower part of the support plate to the support plate in a tiltable manner,
When the seat back is in an upright state, the rotation of the support plate relative to the hinge portion is locked, and the seat back is tilted forward to lock the support plate relative to the hinge portion via a link mechanism. Is configured to be released,
The seat back in the first state is brought forward with the pin as a base point,
By pulling the seat back in the forward-tilted state forward and rotating the support plate with respect to the hinge portion, the entire seat back is moved to the front side of the seat cushion from the first state. ,
The vehicle seat according to claim 1, wherein the seat back that has moved to the front side of the seat cushion is configured to be displaced from a forwardly tilted state to a standing state to be in a second state .

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