JP3199206B2 - Locking device for retractable rear seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a retractable rear seat installed in a van or a one-box car.

[0002]

2. Description of the Related Art FIG. 12 shows an example of a retractable rear seat. The rear seat a rotatably supports the seat back b on the seat cushion c, and the seat back b
Is provided with a lock mechanism for erecting and holding at a predetermined angle. At the time of storage, the lock of the lock mechanism is released, and the seat back b is tilted forward so as to be folded on the seat cushion c. A knob d for operating the lock mechanism is provided at the upper end of the side of the seat back b.

However, in this rear seat a, the user must lift the knob d with one hand to release the lock of the lock mechanism and tilt the seat back b with the other hand, and the operability is not very good. . There is also a rear seat in which the seat back b is locked even at the forward tilt position. In such a seat, when the rear seat a is to be erected while the front seat is slid backward, the front end of the seat back b may hit the back of the front seat. In such a case, the lock release operation of the lock mechanism cannot be performed unless the front seat is once slid forward.

The present applicant has previously filed Japanese Patent Application No. 5-198179 as a solution to such a problem.
In the prior application, as shown in FIG. 1, in a retractable rear seat in which a seat back is tilted forward and folded on a seat cushion, a recess is formed on the upper back surface of the seat back, and the recess is formed so as to cover the recess. Then, a dish-shaped base is attached to the seat back, and a knob is attached to the base so as to be slidable in the vertical direction, and the knob is linked to a lock mechanism of the seat back.

[0005]

However, in the above-mentioned application, as shown in FIG.
In some cases, a gap D was generated during the period 05. The generation of this gap caused an erroneous operation of putting a finger on the knob and pulling the knob 104 in a peeling direction, or the knob was damaged due to an increase. Or the knob was causing the rattle to the base.

[0006]

The gist of the present invention to solve the above-mentioned problem is to provide a retractable rear seat in which a seat back is tilted forward and folded on a seat cushion. A base is attached, a knob is slidably attached to the base, the knob is linked to the locking mechanism of the seat back, and slits are provided on opposing side walls of the base parallel to the sliding direction of the knob. A lock operation device for a retractable rear seat in which a pin penetrating a knob is slidably engaged with the slit.

[0007]

FIG. 1 shows a retractable rear seat employing the device of the present invention. In FIG. 1, reference numeral 1 denotes a seat back, and 2 denotes a seat cushion. A lock operation device 3 is installed on the upper back surface of the seat back 1, and a knob 4 provided on the lock operation device 3 is lifted upward to release a lock mechanism (not shown) of the seat back 1, and the seat back 1 1 is tilted forward (in the direction of the arrow in the figure) so as to be folded on the seat cushion 2.

FIG. 10 shows a mechanism for installing the seat on the floor. The seat back 1 has a stay 5 at a lower end, and the stay 5 is attached to a bracket 7 installed on a floor 6.
Are pivotally connected by pins 8. On the other hand, the seat cushion 2 is provided with a bracket 9 on a side surface.
Are pivotally connected to the seat back 1 by pins 10. Further, the seat cushion 2 is provided with a leg 11 at a front portion, and both ends of the leg 11 are respectively provided with pins 12 and 13 for the seat cushion 2 and a bracket 1 installed on the floor 6.
4 are pivotally connected to each other. By the way, the above-mentioned lock mechanism restricts the rotation of the seat back 1 with respect to the pin 8 so that the seat back 1 can be held at the upright position. Now, when the lock mechanism is released and the seat back 1 is tilted forward, the leg 11 also falls forward, and the seat back 1 folds over the seat cushion 2 (see FIG. 11). The seat back 1 is also restrained by the lock mechanism at this position.

FIGS. 2 to 4 show details of the lock operation device 3. FIG. In the drawing, reference numeral 15 denotes a dish-shaped base, and a flange 16 is provided around the opening edge thereof. The base 15 has a rectangular notch 17 formed on a bottom wall 15a, a pair of guide rails 18 provided on the back side of the bottom wall 15a, and a control cable holding portion 19 connected to the rail 18 is integrally formed. . A notch 20 is formed in the lower peripheral wall 15b, and a pair of right and left claws 21 is provided adjacent to the notch 20.
Furthermore, on the surface of the bottom wall 15a, vertically extending protrusions 22 are provided on both sides of the notch 17, as shown in FIG.

Reference numeral 23 denotes a slide plate integrally formed with the knob 4 at its upper end, and a recess 24 is formed on the back side of the knob 4. The plate 23 has a boss 25 at the center of the back surface,
Guides 26 are integrally formed on both sides of the boss 25. Further, on the back surface of the plate 23, as shown in FIG.
Is slightly raised. In addition, the plate 23 is gently curved in the lateral direction as a whole, and has a concave surface on the front side.

Reference numeral 28 denotes a stopper having a U-shaped cross section, and a semicircular notch 29 is formed on the left and right side walls 28a. Further, a pressing portion 50 is provided on the back surface side of the front wall 28b, and a hole 30 is formed through the pressing portion 50.

The above configuration is similar to that of the aforementioned Japanese Patent Application No. 5-198179, but the present invention further includes the following configuration. 3 to 5, reference numeral 51 denotes a slit formed on both side walls along the vicinity of the bottom surface of the base 15,
52 are through holes formed in both side walls of the knob of the knob 4. The slit 51 and the through-hole 52 are provided with a pin 53 made of aluminum or the like penetrating them at the same time, and a push nut 54 is provided to prevent the pin 53 from coming off.

The assembly of the lock operation device 3 is performed as shown in FIG. First, the lower end of the slide plate 23 is passed through the notch 20 of the base 15 so that the plate 23
Guide 26 is engaged with the notch 17 of the base 15. Next, the casing 3 of the control cable 31
The engaging portion 31b at the end of 1a is engaged with the engaging portion 19a of the cable holding portion 19 (see FIGS. 3 and 6), and the left and right side walls 28a of the stopper 28 are engaged with the guide rail 18 of the base 15. After fitting, the hole 3 of the stopper 28
0 and inner cable 31c of control cable 31
The screw 32 is passed through the hole 31d of the
Is engaged with the boss 25 of the slide plate 23. Here, the through hole 52 of the knob is connected to the slit 51 of the base.
, The pin 53 penetrates the both, and the push nut 54 is inserted to complete the assembly of the lock operating device. When assembling the assembly to the seat back 1, the assembly is inserted into the concave portion 34 of the seat back panel 33, and is engaged between the flange 16 and the claw 21 with a locking portion (not shown) of the seat back panel 33. From the screw (not shown) in the hole 35 of the base 15
(See FIG. 7). At this time, the base 15
Flange 16 presses the carpet 36 against the seat back panel 33. The other end of the control cable 31 is linked to the above-mentioned lock mechanism.

Since the present embodiment is configured as described above,
When the rear seat is stored, the knob 4 is pushed up with the thumb to release the lock mechanism, and the seat back 1 may be pushed forward as it is. Further, since the base 15 and the slide plate 23 are assembled with the protrusions 22 abutting on each other, the friction is extremely small, and the slide plate 23 slides smoothly. Further, the slit 51 of the base 15
The pin 53 is provided in the through hole 52 at the same time, and the push nut 54 is provided to prevent the pin 53 from coming off. Therefore, the knob is held on the bottom surface of the base.

[0015]

According to the present invention, not only can the seat back be unlocked and tilted forward with one hand, but even if the front end of the seat back hits the front seat at the time of storage, the lock release operation is hindered. Disappears. In addition,
Since the concave part of the seat back is covered with a dish-shaped base,
There is no particular problem in appearance. Further, it is possible to prevent a gap from being generated between the knob and the base, and to prevent an erroneous operation of putting a finger on the knob and pulling the knob in a peeling direction. Further, even when the base or the knob, which is a resin component, undergoes temporal deformation or thermal deformation, the knob can be prevented from being lifted, so that the appearance can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a retractable rear seat employing a lock operation device of the present invention.

FIG. 2 is a front view of the same device.

FIG. 3 is a rear view of the same device.

FIG. 4 is an exploded side view of the same device.

FIG. 5 is a sectional view taken along line CC shown in FIG.

FIG. 6 is a view of FIG. 2 viewed from the direction of arrow B.

FIG. 7 is a sectional view taken along line AA shown in FIG. 2;

FIG. 8 is a front view of a base.

FIG. 9 is a rear view of the slide plate.

FIG. 10 is a side view of the seat shown in FIG. 1;

FIG. 11 is a diagram showing a stored state of the sheet.

FIG. 12 is a diagram showing a conventional example.

FIG. 13 is a diagram showing a conventional problem.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat back 2 Seat cushion 3 Lock operation device 4 Knob 15 Base 51 Slit 53 Pin

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-193730 (JP, A) JP-A-57-167831 (JP, A) JP-A-64-67433 (JP, A) 108136 (JP, U) JP 5-23946 (JP, U) JP 1-88204 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60N 2/32-2 / 36

Claims (1)

(57) [Claims] 1. A retractable rear seat in which a seat back is folded forward and folded on a seat cushion, a dish-shaped base is attached to the back of the seat back, and a knob is slidably attached to the base. In cooperation with the locking mechanism of the seat back, a slit is provided in the opposite side wall of the base parallel to the sliding direction of the knob, and a pin passing through the knob is slidably engaged with the slit. A retractable rear seat lock operating device.