JP7198725B2 - Vehicle seat device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device that includes a locking mechanism that locks a seat back with respect to a seat cushion, and an unlocking mechanism that unlocks the locking mechanism.

2. Description of the Related Art A vehicle seat device is provided with a locking mechanism that locks a seat back with respect to a seat cushion, and an unlocking device that unlocks the locking mechanism (see, for example, Patent Document 1). The unlocking device described in Patent Document 1 includes a recess formed in the upper rear surface of the seat back of a rear seat, a base mounted so as to cover the recess, and a knob mounted slidably in the vertical direction of the base. It has The knob is associated with the locking mechanism. The user can release the lock by the lock mechanism by operating the knob by pushing it up with the thumb. This allows the user to tilt the seat back forward and fold it over the seat cushion. Further, the seat back is locked to the seat cushion by the locking mechanism even when it is folded over the seat cushion.

JP-A-7-52697

By the way, in the lock release device described in Patent Document 1, when the seat back folded over the seat cushion is returned to the upright position from the front, the user must hold the seat back with one hand. Since the seat back is pushed up with the other hand while operating the knob, the operation becomes complicated. Therefore, there is still room for improvement in operability when operating the seat back tilted forward toward the upright position.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular seat device that allows easy unlocking by a locking mechanism and tilting operation of the seatback from either the front or the rear of the seatback.

A vehicle seat device for achieving the above object is provided with a locking mechanism for locking a seat back with respect to a seat cushion, and an unlocking mechanism for unlocking the locking mechanism, wherein the seat cushion is: When the upper and lower sides of the seat back in the upright position are referred to as upper and lower sides, and the front and rear sides of the seat back in the front-rear direction are referred to as front and rear, respectively, the lock is released. The mechanism includes a recess provided in the upper end portion of the seat back from the upper surface to the rear surface of the seat back, and a non-operating position accommodated in the recess and rotated outward from the recess. and an operation lever for releasing the lock by the lock mechanism, wherein the operation lever extends along the width direction of the seat back on the front side and upper side of the recess, and rotates the lever body. a central shaft portion, and the lever body has an extension portion extending rearward from the shaft portion and an operation portion extending downward from the rear portion of the extension portion.

According to this configuration, when the operating lever is at the non-operating position, it is accommodated in the recess provided continuously from the upper surface to the rear surface at the upper end of the seat back. Therefore, the user can rotate the operation lever from either the front or the rear of the seat back, regardless of whether the seat back is in the upright position or tilted forward.

When tilting the seat back in the upright position forward, the user can release the lock by the locking mechanism by rotating the operation lever in a direction in which the operation portion is separated from the rear surface of the seat back. Subsequently, the user pushes the seat back forward via the operating lever at the rear of the seat back, or pulls the seat back via the operating lever at the front of the seat back, thereby moving the seat back forward. can be beaten to

On the other hand, when the seat back that has been tilted forward is returned to the upright position, the user rotates the operation lever in the direction in which the operation portion moves away from the rear surface of the seat back, thereby causing the lock mechanism to operate. can be unlocked. Subsequently, the user can return the seat back to the upright position by pulling up the seat back via the operation lever in either of the rearward and forward directions of the seat back.

For these reasons, according to the above configuration, unlocking by the locking mechanism and tilting operation of the seatback can be performed by a series of operations using the operating lever.
Therefore, unlocking by the locking mechanism and tilting operation of the seatback can be easily performed from either the front or the rear of the seatback.

In the vehicle seat device, it is preferable that a rear surface of the operation portion is provided with a finger hook portion having a concave shape or a convex shape.
According to this configuration, since the finger hook is provided on the rear surface of the operation unit, the user can easily operate the seat back in front of and behind the seat back regardless of whether the seat back is in the upright position or tilted forward. The operation lever can be rotated by placing a finger on the finger hook from any direction on the rear side.

In the vehicle seat device described above, it is preferable that the finger hook portion has a concave portion or a through hole as the concave shape.
According to this configuration, the fingers of the user can be inserted into the concave portion or the through hole of the operating portion. Therefore, the operating lever can be stably operated.

In the vehicle seat device described above, it is preferable that a gap into which a finger can be inserted is provided between a front end surface of the operation portion and a facing surface of the recess that faces the front end surface.
According to this configuration, the user can also rotate the operating lever by inserting a finger into the gap between the distal end surface of the operating portion and the facing surface of the recess. Thereby, the operability of the operating lever can be improved.

In the vehicle seat device, the seat back is laid down to a lying down position along the floor of the vehicle, and the locking mechanism locks the seat back to the seat cushion at the lying down position. is preferred.

According to this configuration, the user can rotate the operating lever from either the front or the rear of the seat back, regardless of whether the seat back is in the standing position or in the reclined position.

According to the present invention, unlocking by the locking mechanism and tilting operation of the seatback can be easily performed from either the front or the rear of the seatback.

1 is a perspective view showing an embodiment of a vehicle seat device from an obliquely rear side; FIG. The perspective view which shows the operation lever of the state assembled|attached to the bezel of the same embodiment. FIG. 3 is an exploded perspective view of the operating lever of the same embodiment; Sectional drawing of the operation lever of the state assembled|attached to the bezel of the same embodiment. (a) is a partially cutaway side view of the seat device in the upright position centering on the operation lever, and (b) is an operation lever from behind for tilting the seatback forward. (c) A cross-sectional view showing how the operating lever is operated from the front in order to tilt the seat back forward. (a) is a side view of the seat device in the prone position of the same embodiment, with a part centered on the operation lever broken away; (c) A cross-sectional view showing how the operating lever is operated from the front in order to return the seat back to the upright position. The perspective view which shows the lever main body of the control lever of the example of a change.

An embodiment will be described below with reference to FIGS. 1 to 6. FIG.
As shown in FIGS. 1, 5, and 6, a vehicle seat device (hereinafter referred to as a seat device 10) includes a seat cushion 61 attached to a floor 70 of a vehicle body, and a rear portion of the seat cushion 61. A seat back 62 and a headrest 63 attached to the upper end of the seat back 62 are provided. It should be noted that the seat device 10 of the present embodiment is preferably employed as, for example, a third seat.

As shown in FIGS. 5 and 6 , a lock mechanism 40 is provided between the seat cushion 61 and the seat back 62 to lock the seat back 62 with respect to the seat cushion 61 . The locking mechanism 40 prevents tilting of the seat back 62 with respect to the seat cushion 61 .

Further, the seat device 10 is provided with an unlocking mechanism 50 for unlocking by the locking mechanism 40 . The lock release mechanism 50 includes a release lever 51 for releasing the lock by the lock mechanism 40 , a cable 52 having one end connected to the release lever 51 , and an operation lever 20 connected to the other end of the cable 52 . In the following description, the upper side and the lower side of the seat back 62 in the up-down direction at the position where the seat back 62 stands with respect to the seat cushion 61 (hereinafter referred to as the standing position) are referred to as the upper side and the lower side. Also, the front and rear of the seat back 62 in the front-rear direction will be described as front and rear. Also, the width direction of the seat back 62 will be described as the width direction W. As shown in FIG.

As shown in FIGS. 1, 5, and 6, the upper end of the seat back 62 is provided with a mounting recess 64 extending from the upper surface 62a to the rear surface 62b of the seat back 62. As shown in FIGS.
As shown in FIGS. 1-4, the bezel 30 is mounted within the mounting recess 64 .

The bezel 30 has a stepped front wall 31 positioned downward toward the rear, and a pair of side walls 32 provided on both sides of the front wall 31 in the width direction W and extending upward and rearward from the front wall 31 . have.
The front wall 31 and the pair of side walls 32 form a recess 33 that opens upward and rearward. The recess 33 is provided from the upper surface 62a of the seat back 62 to the rear surface 62b.

A lower portion of the front wall 31 is provided with a screw hole (not shown) penetrating through the front wall 31 in the front-rear direction. A screw 41 is inserted through the screw hole from the rear side. The bezel 30 is attached to the mounting recess 64 of the seat back 62 with screws 41 . A cover 39 that covers the head of the screw 41 is attached to the lower portion of the recess 33 . The cover 39 is curved so as to be positioned downward toward the rear and swell obliquely forward and downward.

A pair of insertion holes 38 penetrating through each side wall 32 in the width direction W is provided in the upper portion of each side wall 32 . Each insertion hole 38 is provided on the same axis.
A flange 34 is provided along the entire periphery of the opening of the recess 33 . The upper surface and rear surface of the flange 34 are substantially flush with the upper surface 62 a and rear surface 62 b of the seat back 62 .

The bezel 30 is integrally formed of hard resin material, for example. The concave portion 33 corresponds to the concave portion according to the present invention.
As shown in FIG. 3, the operation lever 20 is accommodated in the recess 33. As shown in FIG.

The operating lever 20 includes a lever body 20A and a stepped shaft portion 20B.
The shaft portion 20B extends along the width direction W on the front and upper side of the recess 33 and serves as the center of rotation of the lever body 20A.

As shown in FIGS. 2 to 4, the lever body 20A extends in the front-rear direction between a pair of side wall portions 21 facing the side walls 32 of the bezel 30, and the upper ends of the side wall portions 21 are connected to each other. It has a connecting extension portion 22 and an operation portion 23 extending downward from the rear end of the extension portion 22 and connecting the rear ends of the extension portions 22 to each other.

A portion between the extension portion 22 and the operation portion 23 is curved so as to be positioned downward toward the rear side and bulge obliquely rearward and upward.
As shown in FIG. 3, the front portion of each side wall portion 21 is provided with a recess portion 26 located inside in the width direction W from the surrounding portion.

A cylindrical support tube portion 27 extending along the width direction W is connected to each recess portion 26 . Both ends of the support cylinder portion 27 protrude outward in the width direction W from the outer surface of each hollow portion 26 .
The shaft portion 20B is sequentially inserted through the insertion hole 38 on one side, the support cylinder portion 27, and the insertion hole 38 on the other side. The operating lever 20 is mounted in the recess 33 so as to be rotatable about the shaft portion 20B.

As shown in FIG. 4 , the front portion 22 a of the extension portion 22 is curved so as to be positioned downward toward the front side, and extends along the outer peripheral surface of the support cylinder portion 27 .
As shown in FIGS. 2 and 4, a gap S into which a user's fingers can be inserted is provided between the tip end face 23a of the operation portion 23 and a facing face 34a of the concave portion 33 of the bezel 30 facing the tip end face 23a. is provided. The vertical length of the gap S is constant in the width direction W (see FIG. 2).

The operating portion 23 is provided with a through hole 24 having a substantially rectangular shape when viewed from the front. It should be noted that the through hole 24 corresponds to the finger hooking portion according to the present invention.
As shown by solid lines in FIGS. 5A and 6A, when the operating lever 20 is in the non-operating position where the operating lever 20 is not rotated, the upper surface of the extending portion 22 is aligned with the upper surface 62a of the seat back 62. and almost flush with each other. Also, at this time, the rear surface of the operation portion 23 is substantially flush with the rear surface 62 b of the seat back 62 .

As shown in FIG. 4, the lower surface of the extension portion 22 is provided with a projecting piece 28 to which the upper end of the cable 52 is connected via a connecting member (not shown). Further, the front wall 31 is provided with a hole 37 through which the cable 52 is inserted.

The user turns the operating lever 20 in the direction in which the operating portion 23 is separated from the rear surface 62 b of the seat back 62 , that is, from the non-operating position accommodated in the recess 33 toward the outside of the recess 33 . Then, the cable 52 connected to the projecting piece 28 is pulled. As a result, the release lever 51 is displaced to the unlocked position to release the lock by the lock mechanism 40 , and the seat back 62 can be tilted with respect to the seat cushion 61 .

Next, the operation of this embodiment will be described.
As shown by solid lines in FIGS. 5A and 6A, when the operating lever 20 is in the non-operating position, a concave portion is provided continuously from the upper surface 62a to the rear surface 62b at the upper end of the seat back 62. 33 is housed. Therefore, the user can use the seat back 62 regardless of whether the seat back 62 is in the upright position or in the position reclined forward along the upper surface of the floor 70 (hereinafter referred to as the lying down position). The operating lever 20 can be rotated from either the front or rear direction. In addition, in this embodiment, the seat back 62 is folded over the seat cushion 61 at the reclined position.

As shown in FIG. 5, when tilting the seat back 62 in the upright position forward, the user rotates the operation lever 20 in a direction in which the operation portion 23 moves away from the rear surface 62b of the seat back 62. The lock by the lock mechanism 40 can be released. Subsequently, the user can tilt the seat back 62 forward by pushing the seat back 62 forward via the operation lever 20 at the rear of the seat back 62 (see FIG. 4B). . Further, in front of the seat back 62, the seat back 62 can be tilted forward by pulling the seat back 62 via the operation lever 20 (see FIG. 1(c)). At this time, the operating lever 20 can be rotated by placing a finger in the through hole 24 from either the front or the rear of the seat back 62 .

On the other hand, as shown in FIG. 6, when returning the seat back 62 from the reclined position toward the standing position, the user moves the operating lever 20 in the direction in which the operating portion 23 is separated from the rear surface 62b of the seat back 62. can be unlocked by the lock mechanism 40 by rotating the . Subsequently, the user can return the seat back 62 to the upright position by pulling up the seat back 62 via the operation lever 20 behind the seat back 62 (see FIG. 4B). In addition, the seat back 62 can be returned to the upright position by pulling up the seat back 62 via the operation lever 20 through the gap S in front of the seat back 62 (see FIG. 1C). Also, at this time, the operating lever 20 can be rotated by placing a finger in the through-hole 24 from either the front or the rear of the seat back 62 .

Next, the effect of this embodiment is demonstrated.
(1) The seat device 10 includes a locking mechanism 40 that locks the seat back 62 with respect to the seat cushion 61 and an unlocking mechanism 50 that unlocks the locking mechanism 40 . The lock release mechanism 50 includes a recess 33 provided at the upper end of the seat back 62 from the upper surface 62 a to the rear surface 62 b of the seat back 62 , and a non-operating position accommodated in the recess 33 toward the outside of the recess 33 . and an operation lever 20 that releases the lock by the lock mechanism 40 by being rotated. The operating lever 20 includes a lever main body 20A and a shaft portion 20B extending along the width direction W of the seat back 62 on the front side and upper side of the recess 33 and serving as the rotation center of the lever main body 20A. , an extension portion 22 extending rearward from the shaft portion 20B, and an operation portion 23 extending downward from the rear portion of the extension portion 22. As shown in FIG.

According to such a configuration, since the operation described above is achieved, the unlocking operation of the locking mechanism 40 and the tilting operation of the seat back 62 can be performed by a series of operations using the operating lever 20 . Therefore, the lock release by the lock mechanism 40 and the tilting operation of the seat back 62 can be easily performed from either the front or the rear of the seat back 62 .

Since the operating lever 20 is accommodated in the recess 33 and the mounting recess 64 at the non-operating position, it is possible to prevent the operating lever 20 from restricting the space in the vehicle compartment. Also, the design of the seat back 62 can be enhanced.

(2) The rear surface of the operating portion 23 is provided with a concave finger hook portion. The finger hook has a through hole 24 with a concave shape.
According to such a configuration, the rear surface of the operation portion 23 is provided with the through hole 24 as a finger hook portion. For this reason, the user can operate the seat back 62 by placing a finger in the through hole 24 from either the front or the rear of the seat back 62, regardless of whether the seat back 62 is in the upright position or in the reclined position. The lever 20 can be rotated. Also, the operation lever 20 can be stably operated.

(3) Between the tip end surface 23a of the operation portion 23 and the facing surface 34a of the mounting recess 64 facing the tip end surface 23a, a gap S into which a finger can be inserted is provided.
According to such a configuration, the user can also rotate the operating lever 20 by inserting a finger into the gap S between the distal end surface 23 a of the operating portion 23 and the facing surface 34 a of the mounting recess 64 . Thereby, the operability of the operating lever 20 can be improved.

(4) The seat back 62 is laid down to a lying down position along the floor 70 of the vehicle, and the locking mechanism 40 locks the seat back 62 to the seat cushion 61 in the lying down position.

According to this configuration, the user can turn the operating lever 20 from either the front or the rear of the seat back 62 regardless of whether the seat back 62 is in the standing position or in the reclined position. can be operated.

<Change example>
This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

The gap S can be omitted if the operation portion 23 is provided with a finger hook portion such as the through hole 24 .
- For example, as shown in FIG. 7, a recess such as a recessed groove 29 provided on the rear surface of the operation portion 23 may constitute the finger hooking portion.

- The shape of the finger hooking portion is not limited to a concave shape such as the through hole 24 or the groove 29, and may be a convex shape protruding from the rear surface of the operation portion 23.
- If the gap S is provided, the finger rest can be omitted.

- The seat back 62 is not limited to being folded over the seat cushion 61 in the reclined position. For example, when the seat back 62 is laid down to the lying down position along the upper surface of the floor 70, the seat cushion 61 is slid rearward relative to the seat back 62, so that the seat back 62 and the seat cushion 61 move forward and backward. They may be arranged side by side.

DESCRIPTION OF SYMBOLS 10... Seat apparatus, 20... Operation lever, 20A... Lever body, 20B... Shaft part, 21... Side wall part, 22... Extension part, 22a... Front part, 23... Operation part, 24... Through hole (finger hook part), 26... Recess 27... Support cylinder 28... Protruding piece 29... Recess 30... Bezel 31... Front wall 32... Side wall 33... Recess 34... Flange 34a... Opposite surface 37... Hole 38... Insertion hole 39... Cover member 40... Lock mechanism 50... Unlock mechanism 51... Release lever 52... Cable 61... Seat cushion 62... Seat back 62a... Upper surface 62b... Rear surface 63... Headrest, 64 --- Mounting recess, 70 --- Floor.

Claims (2)

A vehicle seat device comprising a locking mechanism that locks a seat back with respect to a seat cushion and an unlocking mechanism that unlocks the locking mechanism,
The upper and lower sides of the seat back in the standing position where the seat back stands with respect to the seat cushion are referred to as upper and lower, and the front and rear of the seat back in the front-rear direction are referred to as front and rear. and when,
The unlocking mechanism is
a recess provided from the upper surface to the rear surface of the seat back at the upper end of the seat back;
an operation lever that is rotated from a non-operating position housed in the recess toward the outside of the recess to release the lock by the lock mechanism;
The operating lever includes a lever body, and a shaft portion extending along the width direction of the seat back on the front side and upper side of the recess and serving as a rotation center of the lever body,
The lever body has an extension portion extending rearward from the shaft portion and an operation portion extending downward from the rear portion of the extension portion,
A through hole that functions as a finger hook is opened on the rear surface of the operation unit,
A gap into which a finger can be inserted is provided between the distal end surface of the operation portion and the opposing surface of the recess that faces the distal end surface,
Vehicle seat device. The seat back is laid down to a lying down position along the floor of the vehicle,
The locking mechanism locks the seat back with respect to the seat cushion in the reclined position.
The vehicle seat device according to claim 1.

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