JPH10264693A - Hinge structure of detachable seat cushion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply fit and detach a seat cushion against a base bracket and strengthen a hinge construction against large load in the longitudinal and vertical directions by upward moving the seat cushion while unlocking a lock part, and disengaging the shaft of a hinge bracket from the upper recessed parts of the base bracket so as to detach the seat cushion. SOLUTION: When a seat cushion is fitted, it is moved downward in a jumping up posture so as to engage a shaft 9 with the respective upper recessed parts 7b of a base bracket 7 from the upper side, then the shaft 9 is locked with the lock part 15c of a lock member 15, and by rotationally moving the seat cushion backward centering around the shaft 9, it is locked. A large load in the longitudinal direction is received with the upper recessed parts 7b of the base bracket 7 and the shaft 9 of a hinge bracket 11, a large load in the vertical direction can be received with the upper recessed parts 7b of the base bracket 7 and the shaft 9. When the seat cushion is detached, by moving it upward in the jumping up posture, the shaft 9 is disengaged from the upper recessed parts 7b of the base bracket 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge structure for a detachable seat cushion in which a seat cushion can be easily attached and detached and which can withstand a large load in the front-rear and vertical directions.

[0002]

2. Description of the Related Art Conventionally, for example, in a motor vehicle, a front seat 1 and a rear seat 2 are arranged as shown in FIG. In order to use the space including the seat back 2A as a large luggage compartment, there is one in which the seat back 2A is tilted forward after the seat cushion 2B is flipped forward (see JP-A-7-25725).

In recent years, it has also become possible to make the seat cushion 2B detachable so that the space including the seat cushion 2B which has been flipped forward can be used as a large luggage compartment.

[0004]

However, it is necessary for the user to easily attach and detach the seat cushion 2B, and to use a hinge structure which is strong against large loads in the front-rear and vertical directions at the seating position.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a hinge structure for a detachable seat cushion in which a seat cushion can be easily attached and detached and which is strong against large loads in the front-rear and vertical directions. It is the purpose.

[0006]

According to the present invention, a seat cushion placed on a floor panel or the like can be flipped forward while being rotated by a front hinge mechanism. In such a seat cushion, the hinge mechanism attaches a hinge bracket provided with a shaft in the width direction to a front portion of the seat cushion, and attaches a base bracket provided with an upper concave portion that opens upward to a floor panel. The base bracket has a locking portion that locks the upper portion of the shaft of the hinge bracket fitted into the upper recess from above and locks the locking portion, and an operating portion that can operate the locking portion in the unlocking direction. Attach the locking member, move the seat cushion upward while unlocking the locking part with the operating part, and attach the hinge bracket shaft to the base bracket. There is provided a hinge structure of a removable seat cushion, characterized in that as removal of the seat cushion to remove the fitting from the recess on the socket.

According to the present invention, the base bracket is attached to the floor panel, and the hinge bracket is attached to the seat cushion.

When the seat cushion is mounted, the seat cushion is moved downward in a flipping up position, and the shaft on the seat cushion side is fitted into the upper recess on the floor panel side from above. Is locked in the upper concave portion.

In this state, the seat cushion is rotated to the rear seating position about the hinge bracket side shaft. The rear part of the seat cushion in the seating position is locked to the floor panel by a known catch mechanism.

When the seat cushion is attached as described above, a large load in the left-right direction can be received by the base bracket on the floor panel side and the hinge bracket on the seat cushion side. The upper concave portion on the panel side and the shaft on the seat cushion side to which the upper concave portion fits can receive, and a large vertical load can be applied to the shaft on the seat cushion side and the floor panel side to which this shaft fits. And the locking portion of the locking member.

When the seat cushion is to be removed, the procedure is reversed. That is, the seat cushion is rotated to the front flip-up position, and the operating portion of the locking member is operated by operating the operating portion of the locking member in this state. While releasing the lock, the seat cushion is moved upward in the flipping up position, and the shaft on the seat cushion side is disengaged from the upper recess on the floor panel side.

According to a second aspect of the present invention, when the locking member is a plate spring in which the locking portion and the operating portion are integrally formed, the shaft can be automatically locked by the elasticity of the plate spring, and the seat cushion can be fastened. Tackle can be absorbed.

In the present invention, the seat cushion may be directly mounted on the floor panel, or the base frame of the seat cushion may be fixed above the slider mounted on the floor panel.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. The parts having the same configuration and operation as those of the prior art in FIG. 5 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIGS. 1 to 3, a pair of base brackets 7, 7 are bolted at predetermined intervals in the width direction at the front of the floor panel 5 on which the seat cushion 2B is mounted. The upper brackets 6 are formed with upper concave portions 7b, respectively, which are fixed on both sides 7a, 7a of the base brackets 7, respectively.

At the front bottom of the seat cushion 2B,
A pair of inverted L-shaped hinge brackets 11, 11 are fixed to the base panel 7 of the floor panel 5 with screws 12, 12, respectively.

Both sides 11 of each hinge bracket 11
a, 11a, through holes 11b, 11b in the width direction.
Each of the through holes 11b is provided with a shaft 9 fitted into the upper concave portion 7b of each of the base brackets 7 from above, and both ends of the shaft 9 are connected to both side portions 11b.
a and 11a are fixed by welding. This shaft 9 has
On the inner surface side of each side portion 11a, a washer 8 with a slit made of synthetic resin integrally connected by a connecting portion 8a is fitted in a radial direction. Each of the washers 8 has a protrusion 8 b formed on each side 11 a of the hinge bracket 11.
The rotation is stopped by being locked at 1c.

Each side 7a of each base bracket 7
Is set to an outer width that fits inside the washers 8, 8 of each hinge bracket 11.

On the other hand, an inverted U-shaped locking member 15 made of a leaf spring
The inner piece 15a of the locking member 15 is fixed to the bottom 7c of each of the base brackets 7 with a rivet 16, and the outer piece 15b is bent inwardly into a V-shape, and The formed small inverted V-shaped engaging portion 15c faces the inside of the opening entrance of the upward recess 7b facing upward on each side 7a (see FIG. 4A). Further, the operation portion 15d formed on the lower end side extends forward from below the upper concave portion 7b of each side portion 7a.

When the hinge mechanism 17 is constructed as described above, when attaching the detached seat cushion 2B, the seat cushion 2B is moved downward in the flipping up position as shown in FIG. 11 to the upper recesses 7b, 7b of the base bracket 7.
When the shaft 9 is fitted from above, the shaft 9
The bending portion 15c is bent inward, and then the locking portion 15c
Is locked in the upper concave portion 7b. In this state,
As shown in FIG. 4B, the seat cushion 2B is positioned by the base bracket 7 in the front-rear and left-right directions, and is positioned vertically by the locking portion 15c of the locking member 15 and hinged.

Thereafter, when the seat cushion 2B is rotated to the rear seating position about the shaft 9 of the hinge bracket 11, the rear portion of the seat cushion 2B is locked to the floor panel 5 by a catch mechanism (not shown).

When the mounting of the seat cushion 2B is completed in this manner, a large load in the left-right direction is firmly applied to both sides 7a of the base bracket 7 of the floor panel 5 and both sides 11a of the hinge bracket 11 of the seat cushion 2B. Can receive.

Also, when a large load in the front-rear direction is applied, the shaft 9 of the hinge bracket 11
b from above, the upper recess 7b of the base bracket 7 and the shaft 9 of the hinge bracket 11
And can be received strongly.

Further, a large load in the vertical direction is applied to the shaft 9 of the hinge bracket 11 by the locking portion 15 c of the locking member 15.
Are engaged from above, so that the upper concave portion 7b of the base bracket 7 and the shaft 9 of the hinge bracket 11 can receive it firmly.

Therefore, when the seat cushion 2B is attached, the structure becomes strong against large loads in any of the left-right direction, the front-rear direction, and the vertical direction.

On the other hand, when removing the attached seat cushion 2B, as shown in FIG. 4B, the seat cushion 2B is rotated to the front flip-up position, and then the operating portion 15d of the locking member 15 is moved. The locking operation of the shaft 9 by the locking portion 15c is released by pushing from the front to the rear as indicated by the arrow A in FIG. 4B.

When the seat cushion 2B is moved upward with the flip-up posture, the hinge bracket 1B is moved upward.
The first shaft 9 is disengaged from the upper concave portion 7b of the base bracket 7.

Therefore, the seat cushion 2B can be attached to and detached from the floor panel 5 simply by moving and rotating the seat cushion 2B and pushing the locking member 15, so that the seat cushion 2B can be attached and detached easily and quickly. .

[0029]

As is clear from the above description, the hinge structure of the present invention is such that when the seat cushion is mounted, the shaft on the seat cushion side is fitted into the upper concave portion on the floor panel side from above. Is locked in the upper concave portion by the locking portion of the locking member, and then a large load in the left-right direction is received by each bracket by rotating and mounting the seat cushion around the shaft on the hinge bracket side to the seating position. On the other hand, a large load in the front-rear direction can be received by the upper concave portion on the floor panel side and the shaft on the seat cushion side, and a large load in the vertical direction can be received by the floor panel on which the shaft on the seat cushion side fits. The upper and lower sides of the side can be received by the bottom surface of the locking member and the locking portion of the locking member, so that the left-right direction is of course, and the large load in the front-rear and vertical directions Also a strong structure.

When the seat cushion is to be removed, the seat cushion is rotated to the front flip-up position. It is sufficient to move the seat cushion upward in the raised position and remove the fitting of the seat cushion side shaft from the upper recess on the floor panel side,
The seat cushion can be easily and quickly attached to and detached from the floor panel only by the vertical operation of the seat cushion and the unlocking operation of the locking member.

If the locking member is a leaf spring, the shaft can be automatically locked by the elasticity of the leaf spring, and the rattling of the seat cushion can be absorbed by the elasticity of the leaf spring. become.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a hinge structure according to the present invention.

FIG. 2 is a perspective view of a bottom side of a seat cushion and a front side of a floor panel.

FIG. 3 is a sectional view of a hinge structure.

FIGS. 4A, 4B, and 4C are exploded side views of the operation of the hinge structure.

FIG. 5 is a side view of a seat provided with a flip-up seat cushion.

[Explanation of symbols]

 Reference Signs List 2 Rear seat 2B Seat cushion 5 Floor panel 7 Base bracket 7a Side 7b Upper recess 9 Shaft 11 Hinge bracket 11a Side 15 Locking member 15b Operating portion 15c Locking portion 17 Hinge mechanism

Claims (2)

[Claims] 1. A seat cushion in which a seat cushion placed on a floor panel or the like can be flipped forward while being rotated by a front hinge mechanism, wherein the hinge mechanism has a shaft in a width direction. Attach the hinge bracket with the to the front of the seat cushion, and attach the base bracket with the upper recess that opens upward to the floor panel.
A locking member having a locking portion that locks the upper portion of the shaft of the hinge bracket fitted into the upper recess from above and prevents the locking portion from coming off, and an operating portion that can operate the locking portion in the unlocking direction. It is characterized in that the seat cushion can be moved upward while attaching and unlocking the locking part with the operation part, and the seat cushion can be removed by disengaging the hinge bracket shaft from the upper concave part of the base bracket. Removable seat cushion hinge structure. 2. The hinge structure for a detachable seat cushion according to claim 1, wherein the locking member is a leaf spring in which a locking portion and an operation portion are integrally formed.