JPH07304364A - Seat lock device for vehicle - Google Patents

Abstract

PURPOSE:To reduce the projection height from a floor surface of a striker installed on the floor of a seat lock device for a foldable type rear seat of a vehicle. CONSTITUTION:A latch 23 having an engagement part 22 in the vicinity of the curved part 21b of a bracket 21 which is supported in a turnable manner on a guide bracket 20 which forms a nearly J shape and whose upper end is fixed on the leg 3 of a seat, and a return spring 24 which exists between the guide bracket and the latch, and holds the latch at a lock position through the turning urging to one side are provided. Further, a striker which locks the engagement part of the latch fixed at the lock position and has an engagement hook 17f which forms a plate shape and is fixed on a floor 5 below the latch and can be engaged with the engagement part of the larch and a lock releasing means 18 which is interposed between the seat side and the top end of the curved part of the latch and releases the lock of the striker by turning the latch to other side from the lock position against the springy force of the return spring are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention intervenes between a leg of a folding seat of a vehicle and a floor surface, and locks the leg on the floor to fix the seat when the seat is installed so that it can be seated. The present invention relates to a seat lock device.

[0002]

2. Description of the Related Art For example, in a vehicle called a light van, a rear seat can be normally seated, and the rear seat can be folded to expand a storage space when carrying luggage or the like. FIG. 8 shows an example of such a rear seat. The rear seat 1 is installed on the floor 5 (FIG. 9) by the legs 2 (only one side is shown) at the front of the lower surface of the seat cushion 1a and the legs 3 at the rear. The rear leg 3 and floor 5
A seat lock device 6 is provided between and. Front leg 2
Has a rod shape, the upper end is fixed to the lower surface of the seat cushion 1a, and the lower end 2a is a hinge mechanism that can be undulated in the front-rear direction. The rear leg 3 has a wide and substantially U-shape,
The seat cushion 1 has the upper ends of the left and right side portions 3a, 3a.
The lower surface of a is rotatably attached by a hinge mechanism, and is in contact with the floor 5 via dampers 4 and 4 mounted on both sides of the lower side portion 3b.

The seat lock device 6 includes a lower side portion 3b of the leg 3.
Latch 8, floor 5 attached to bracket 7 via bracket 7
The seat 1 is fixed to the floor 5 by locking the latch 8 to the striker 9 as shown by the solid line in FIG. 9 when seated. As the striker 9, as shown in FIG. 10 (a), a round bar 9 is processed into a substantially Ω shape, both ends 9a, 9a are directly fixed to the floor 5, and the latch 8 is locked to the central portion 9b. Alternatively, as shown in FIG.
For example, there is a structure in which both ends 9a and 9a are bent into a character shape and fixed to the bracket 10, and the bracket 10 is fixed to the floor 5.

When the seat 1 is folded, the latch 8 is removed from the striker 9 as shown by the chain double-dashed line in FIG. 9, and the seat back 1b is folded in the direction of arrow A as shown in FIG. 8 to form the seat cushion 1a. After stacking, the front leg 2 is tilted forward in the direction of arrow B to lean the seat cushion 1a and seat back 1b, and the rear leg 3 is folded as indicated by arrow C. As a result, the rear seat 1 is folded and stored immediately behind the front seat, and the storage space in the rear part of the vehicle is widened.

[0005]

However, in the above-described conventional seat lock device 6, as shown in FIG. 9, since the projecting height H of the striker 9 from the upper surface of the floor 5 is high, it is easy to damage luggage and the like. It is also difficult to put in and take out luggage.
Furthermore, if the luggage is loaded while avoiding the striker 9, there is a problem that the dead space is inevitably increased and the storage space cannot be effectively used.

The present invention has been made in view of the above points, and has a low protrusion height from the floor surface of a striker arranged on the floor surface of a locking device for fixing the legs of the folding seat to the floor. Then, an object of the present invention is to provide a vehicle seat lock device that facilitates loading and unloading of luggage when the seat is folded.

[0007]

To achieve the above object, according to the present invention, there is provided a vehicle seat lock device for locking a leg of a vehicle foldable seat to a floor when the seat is installed so that the foldable seat can be seated. A latch having a curved lower end and a substantially J shape, and an upper end rotatably supported by a guide bracket fixed to a leg of a folding seat, and an engaging portion formed near the curved portion; And a return spring interposed between the latch and the latch for rotating and biasing the latch to one side to hold the latch in a locked position; and a plate-shaped return spring fixed to the floor below the latch and an engaging portion of the latch. A striker which is formed with an engaging claw that can be engaged and which engages with an engaging portion of the latch held at the lock position to lock the latch; and a seat side and a tip of a curved portion of the latch. Between Zaisa are those having a structure in which a lock releasing means for releasing the locking of said striker is rotated to the other side from the locked position the latch against the spring force of the return spring.

[0008]

With the seat installed so that the seat can be seated, the latch is pivotally held in the locked position by the spring force of the return spring, and the engaging portion moves into the lower side of the locking claw of the striker so that the position is maintained. Locked in. This secures the legs of the seat to the floor. When the releasing means rotates the latch against the spring force of the return spring, the engaging portion of the latch is disengaged from the engaging claw of the striker, and the lock is released. As a result, the legs of the seat can be separated from the floor, and the seat can be folded.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The same members as those of the rear seat shown in FIG. 8 are designated by the same reference numerals. In FIG. 1, a seat lock device 1
The latch assembly 1 is provided between the leg 3 of the rear seat 1 and the floor 5 and is provided on the lower side portion 3b of the leg 3.
6, a striker 17 fixed to the floor 5, a lock release band 18 for releasing the lock between the latch assembly 16 and the striker 17, and the like. As shown in FIG. 2, the latch assembly 16 includes a guide bracket 2
0, bracket 21, ring 22, return spring 24 and the like.

The guide bracket 20 is substantially U-shaped in plan view, and has a central portion 20a and both side portions 20b, 20b.
The respective lower ends of are fixed to the upper and side surfaces of the outer peripheral surface of the lower side portion 3b of the leg 3 by welding. Further, as shown in FIG. 5, a part 20c of the lower end of the central portion 20a projects inward at a substantially right angle to form a stopper (hereinafter referred to as "stopper 20c").
The stopper 20c regulates the rotation of the bracket 21 described later and holds the bracket 21 at the lock position.

The bracket 21 is substantially J-shaped when viewed from the side, is slightly narrower than the guide bracket 20, and the left and right side portions 21a of the upper end are bent at a substantially right angle to one side and face each other, and the curved portion. A slit 21c is provided in the width direction at the tip of 21b. This bracket 21 has guide shafts 20 on both sides 21a by a shaft 25.
It is rotatably supported by both side parts 20b, 20b.

The ring 22 is formed into a flat shape by a round bar, and the long side portions 22a and 22b are formed into a flat shape up and down having a length about the width of the bracket 21, and the lower end near the curved portion 21b of the bracket 21. It is welded to the back side of. The bracket 21 and the ring 22 form a latch 23. As shown in FIGS. 2 and 5, in the latch 23, the upper and lower long side portions 22a and 22b of the ring 22 are arranged parallel to the width direction of the bracket 21, and the short side portion 22c is arranged parallel to the longitudinal direction of the bracket. The side portion 22b is located slightly below the lower end of the bracket 21, and the long side portion 22a
Is welded and fixed to the back surface of the lower end. And ring 2
The lower long side portion 22b of 2 is located slightly above the lower surface of the damper 4 mounted on the lower side portion 3b of the leg 3.
That is, when the lower surface of the damper 4 is in contact with the floor 5, the lower long side portion 22b of the ring 22 is slightly obliquely rearward of the lower side portion 3a of the leg 3 and slightly separated from the floor 5.

The return spring 24 is a winding spring,
It is loosely wound around the shaft 25 and has both ends 24a, 24
a is locked to the upper ends of the side parts 20b and 20b of the guide bracket 20, and the locking part 24b formed at the center is pressure-contacted and locked to the upper front surface of the bracket 21, and as shown in FIG. It is urged in the clockwise direction to abut against the stopper 20c of the guide bracket 20. This holds the latch 22 in the locked position.

As shown in FIG. 1, the lock releasing band 18 is attached to a hook 26 whose upper end is fixed to the rear end of the seat cushion 1a, and whose lower end is inserted into the slit 21c of the bracket 21 and is attached to the tip of the curved portion 21b. ing. When the lock release band 18 is pulled up, the lock release band 18 rotates the bracket 21 counterclockwise against the spring force of the return spring 24, as described later.
And the striker 17 are unlocked.

As shown in FIGS. 3 and 4, the striker 17 has a substantially rectangular shape in a plan view, a large square hole 17a is formed in the front portion, and a central portion 17b extends from the rear end to the rear edge of the square hole 17a. It bulges downward. The striker 17 has front and rear ends 17d and 17d 'and left and right side portions 17c and 17c, respectively, which have lower ends curved downward, so that the striker 17 can easily come into contact with luggage and the like. And, in the central portion 17b, the bolt holes 1
7e and 17e are provided.

The rectangular hole 17a is a long side portion 22a of the ring 22.
Is formed slightly larger than the outer dimension of the ring 22. A locking claw 17f for locking is provided on the front edge so as to project toward the inside of the hole 17a, and the ring 22 is formed between the rear edge and the bottom of the ring 22. The long side portion 22b on the side can enter and exit with a slight gap. The locking claw 17f is formed to be slightly narrower than the inner dimension of the long side portion 22b of the ring 22 and slightly longer than its outer diameter. Further, the locking claw 17f has a base end that rises slightly higher than the upper surface, then forms an inclined surface and descends, and the front end is at substantially the same height as the peripheral edge of the hole 17a.

The lower surface of the central portion 17b has front and rear ends 1
7d, 17d 'and both side parts 17c, 17c are positioned slightly below the lower ends of the respective parts, and as shown by the two-dot chain line, when the central part 17b is fixed on the floor 5, the long side part 22b is It is possible to enter the lower side of the locking claw 17f with a slight gap from the floor surface. As a result, the long side portion 22b of the ring 22 is guided to the hole 17a while sliding on the upper surface of the locking claw 17f from the base end side to the distal end, and can further enter the lower side of the locking claw 17f. The striker 17 having such a shape is integrally formed by sheet metal working.

The striker 17 is arranged such that the lower long side portion 22b of the ring 22 can be locked with the locking claw 17f when the rear seat 1 is installed so that it can be seated.
7b is fixed to the floor 5 with bolts 27, 27. The central portion 17b of the striker 17 is low, and the heads of the bolts 27, 27 do not project from the upper surface of the striker 17. The height h of the locking claw 17f of the striker 17 from the floor surface may be set slightly higher than the outer diameter of the lower long side portion 22b of the latch 22, and therefore the floor of the conventional striker shown in FIG. It can be considerably lower than the height H from the surface (h <H).

The operation will be described below. As shown in FIG. 5, when the rear seat 1 is in a seatable state, the latch 2
The bracket 21 of No. 3 is rotated clockwise by the spring force of the return spring 24, abuts on the stopper 20c of the guide bracket 20, and is locked at that position. In this state, the long side portion 22b on the lower side of the ring 22 has entered the hole 17a of the striker 17 and also has entered the lower side of the locking claw 17f, and the ring 22 is held at the lock position. As a result, the latch 23 is locked to the striker 17, the leg 3 is fixed, and the rear seat 1 is locked so that it can be seated.

When the lock between the latch 23 and the striker 17 is released, the lock release band 18 is pulled up in the arrow direction. When the lock release band 18 is pulled up, the bracket 21 is moved with the return spring 2 accordingly.
By rotating counterclockwise against the spring force of 4, the ring 22 is disengaged from the locking claw 17f of the striker 17 as shown by the chain double-dashed line. This allows the legs 3 to move up and the rear seat 1 to be folded. When the lock is released, the latch 23 pivots until the bracket 21 is locked by the stopper 20c by the spring force of the return spring 24 and returns to the locked position.

When the rear seat 1 is returned from the folded and stored state to the seatable state, the lower side portion 3 of the leg 3 is
When a is lowered, first, the lower long side portion 22b of the ring 22 comes into contact with the upper surface of the locking claw 17f of the striker 17 as shown in FIG. Then, when the leg 3 further descends, the latch 23
Is rotated in the counterclockwise direction against the spring force of the return spring 24, and the long side portion 22b slides on the inclined upper surface of the locking claw 17f like a two-dot chain line into the hole 17a. . At the same time, the damper 4 on the lower side portion 3a of the leg 3 contacts the floor surface. When the long side portion 22b on the lower side of the ring 22 enters the hole 17a, the latch 23 is rotated clockwise by the spring force of the return spring 24 to enter the lower side of the locking claw 17f, as shown in FIG. Self-locked to striker 17.

The striker 17 has a low protruding height from the floor 5, and further, since the lower ends of the left and right side portions and the front and rear ends are curved facing downward, the striker 17 has a feeling of protrusion from the floor 5. Since it is small and the top surface slides easily, there are few obstacles when storing luggage. In the above embodiment, the flat ring 2 is attached to the lower end of the J-shaped bracket 21.
2 is welded to form the latch 23, but the present invention is not limited to this. For example, as shown in FIG. 7, a slit 30b is provided at the lower end near the curved portion 30a of the J-shaped bracket 30, and the bracket 30 is provided. Striker width 17
(Fig. 3) The width is set slightly smaller than the width of the rectangular hole 17a, and the lateral width of the slit 30b is set to be slightly larger than the width of the locking claw 17f to form a latch.
The structure may be such that 7f is fitted and locked. The slit 30 provided at the tip of the curved portion 30a
The lower end of the lock release band 18 is attached to c.

[0023]

As described above, according to the present invention, it is possible to lower the projecting height from the floor surface of the striker provided on the floor for locking the folding seat so that it can be seated. It is easy to load and unload items, etc., and damage to luggage etc. is reduced. Further, there is an effect that the appearance is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle rear seat to which a seat lock device according to the present invention is applied.

FIG. 2 is an enlarged perspective view of a latch assembly of the seat lock device of FIG.

FIG. 3 is a plan view of a striker of the seat lock device of FIG.

4 is a sectional view taken along the line IV-IV in FIG.

5 is a cross-sectional view showing a locked state of the seat lock device of FIG.

6 is an explanatory diagram of a case where the lock device of FIG. 5 shifts from an unlocked state to a locked state.

7 is a cross-sectional view showing another embodiment of the latch assembly of FIG.

FIG. 8 is a perspective view of a seat to which a conventional seat lock device is applied.

9 is a cross-sectional view of main parts of the seat lock device of FIG.

FIG. 10 is a perspective view of a striker used in the seat lock device of FIG.

[Explanation of symbols]

 1 Rear Seat 1a Seat Cushion 1b Seat Back 2 Front Leg 3 Rear Leg 3a Lower Side 4 Damper 5 Floor 15 Seat Lock Device 16 Latch Assembly 17 Striker 17a Square Hole 17f Locking Claw 18 Lock Release Band 20 Guide Bracket 21 Bracket 22 Flat Ring 23, 30 Latch 24 Return Spring 26 Hook

Claims (5)

[Claims] 1. A vehicle seat lock device for locking a leg of a vehicle foldable seat to a floor when the seat is installed so that the seat has a lower end curved into a substantially J-shape and an upper end foldable. A latch rotatably supported by a guide bracket fixed to a leg of the seat and having an engaging portion near a curved portion; and a latch interposed between the guide bracket and the latch to pivot the latch to one side. A return spring that urges and holds it in the locked position, and a plate-shaped locking claw that is fixed to the floor below the latch and that can engage with the engaging portion of the latch are held by the lock. A striker that engages with the engaging portion of the latch to lock the latch, and the latch that is interposed between the seat side and the tip of the curved portion of the latch and resists the spring force of the return spring. Seat lock apparatus for a vehicle characterized by comprising a lock releasing means is rotated from the locked position to the other side to unlock and the striker. 2. The latch comprises a bracket formed by a plate member having a substantially J shape and having an upper portion rotatably supported by a guide bracket, and a flat ring that is wide to the left and right, and the ring has an upper side. 2. A long side portion of the bracket is fixed near a curved portion of the bracket, and a lower long side portion is an engaging portion which is inserted into and engages with a lower side of the locking claw of the striker.
The vehicle seat lock device described. 3. The latch is formed of a substantially J-shaped plate member, an upper portion thereof is rotatably supported by a guide bracket, a slit is formed near a curved portion, and the slit is engaged with the striker. The vehicle seat lock device according to claim 1, wherein the seat lock device is an engagement portion with which a claw is engaged. 4. The locking claw of the striker is formed on one side of the hole into which the engaging portion of the latch can be inserted and withdrawn so as to project toward the inside of the hole, the edge facing the engaging portion. The vehicle seat lock device according to claim 1. 5. The vehicle seat lock device according to claim 1, wherein the lock releasing means is a belt having one end attached to a seat side and the other end attached to a tip of a curved portion of the latch.