JPH10264694A - Hinge structure of detachable seat cushion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify attachment and detachment of a seat cushion in a hinge structure of a seat, and set it durable to large load in an axial and vertical directions. SOLUTION: A back recessed part 11b of a seat cushion is engaged with a first shaft 9 of a base bracket, an upper recessed part 15b is press-fitted with the first shaft 9 by rotating a clip 15, and while rotating the seat cushion to a seating position around the first shaft 9, a second shaft 13 is engaged with a front recessed part 7a of a hinge bracket 11 for installation.

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 base frame or the like can be flipped forward while being rotated by a front hinge mechanism. In the seat cushion described above, the hinge mechanism attaches a base bracket provided with a first shaft in the width direction and a front concave portion that opens forward to a base frame or the like, and a second shaft in the width direction and a rearward. A hinge bracket provided with a rear concave portion that opens and an S-shaped clip in which a lower concave portion is pressed into the second shaft is attached to a seat cushion, and the rear concave portion of the hinge bracket is flipped up in a base bracket. After the clip is rotated after being fitted to the first shaft of the first shaft, the upper recess is pressed into the first shaft from above, and then the first shaft While rotating the seat cushion to the rear seating position around the center, the second shaft is fitted and attached to the front concave portion of the hinge bracket from the front, and the seat cushion is rotated to the front flip-up position. The press fit of the upper concave portion of the clip is removed from one shaft, the seat cushion is moved forward, and the rear concave portion of the hinge bracket is disengaged from the first shaft of the base bracket to remove the seat cushion. The present invention provides a hinge structure for a removable seat cushion.

According to the present invention, the base bracket is attached to the base frame or the like, the hinge bracket is attached to the seat cushion, and the lower recess of the S-shaped clip is pressed into the second shaft of the hinge bracket.

When the seat cushion is mounted, the seat cushion is moved rearward in a flipping up position, and the rear concave portion of the seat cushion is fitted into the first shaft of the base frame from the front. By rotating the clip on the cushion side, the upper concave portion of the clip is press-fitted onto the first shaft on the base frame side from above.

Thereafter, the second shaft on the seat cushion side is fitted into the front recess on the base frame side from the front while rotating the seat cushion to the rear seating position about the first shaft on the base frame side. The rear part of the seat cushion in the seating position is locked to the base frame by a known catch mechanism.

When the seat cushion is mounted as described above, a large load in the left-right direction can be received by the base bracket on the base frame side and the hinge bracket on the seat cushion side.
The seat cushion can be received by the rear recess of the seat cushion, which becomes downward with the rotation of the seat cushion to the seating position, and the first shaft of the base frame, into which the rear recess fits, and a large vertical load. Is received by a second shaft on the seat cushion side which fits into the front recess on the base frame side as the seat cushion rotates to the seating position, and a front recess on the base frame side to which the second shaft fits. be able to.

When the seat cushion is to be removed, the procedure is reverse to that described above, that is, the seat cushion is pivoted to the front flip-up position, and in this state, the clip on the seat cushion side is pivoted to the base frame side. The press fit of the upper concave portion of the clip is removed from the first shaft. Then
The seat cushion is moved forward in the flipped up position, and the rear concave portion on the seat cushion side is disengaged from the first shaft on the base frame side.

According to the second aspect, the upper concave portion of the clip is
It is preferable that the first shaft be detachably press-fitted to the first shaft, and that a manual operation portion for detaching operation is formed near the upper concave portion.

In the present invention, the base frame of the seat cushion is fixed above the slider attached to the floor panel. In the case of a seat cushion which does not require a slider, the seat cushion is directly placed on the floor panel. It may be something.

[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 provided at the front of the base frame 6 of the seat cushion 2B fixed to the upper part of the slider 5 attached to the floor panel in the width direction. Each of the base brackets 7 is welded and fixed at a predetermined interval, and the through holes 7b, 7
b are opened, and synthetic resin bag-shaped washers 8, 8 are fitted to the through holes 7b and the side portions 7a corresponding to the front concave portions 7c, 7c described later, respectively. Then, the first shaft 9 is passed through each through hole 7b in the width direction via each washer 8, and is locked by the E-ring 10 to prevent it from falling off.

Each side 7a of each of the base brackets 7,
The front recesses 7c, 7c opening forward are located at the upper position of 7a.
Are formed, and each of the front recesses 7c is covered with each washer 8 as described above.
The shaft 13 is not damaged by the edge.

At the bottom front of the seat cushion 2B,
A pair of hinge brackets 11, 11 correspond to each base bracket 7 of the base frame 6,
2, respectively.

Both sides 11 of each hinge bracket 11
a, 11a are each side part 7a of each said base bracket 7
Is set to a width that fits inside the bag-shaped washer 8.

At the lower position of each side portion 11a, rear recessed portions 11b, 11b opening rearward are formed so as to be fitted to the first shaft 9 of the base bracket 7 from the front.

Further, a second shaft 13 is press-fitted in the width direction at a position in front of each rear concave portion 11b at a lower position of each side portion 11a, and the second shaft 13 is connected to the first shaft 9 as described later. When the hinge bracket 11 is rotated rearward around the center, the front bracket 7 is fitted into the front concave portion 7c of the base bracket 7 from the front.

On the other hand, an S-shaped clip 15 made of synthetic resin is provided, and the lower concave portion 15a of the clip 15 is press-fitted to the second shaft 13 of the hinge bracket 11.

The upper concave portion 15b of the clip 15 is attached to the first shaft 9 of the base bracket 7 by the hinge bracket 1
1 in a state where the rear recess 11b is fitted, the second shaft 13
When the clip 15 is rotated rearward around the
The shaft 9 is set so that it can be press-fitted from above. On the outer surface near the upper concave portion 15b, a hand operation portion 15c protruding upward is integrally formed.

If the hinge mechanism 16 is configured as described above, when the detached seat cushion 2B is mounted, the seat cushion 2B is moved rearwardly in the flip-up position as shown in FIG. Bracket 11
The rear concave portion 11 b is connected to the first shaft 9 of the base bracket 7.
From the front. In this state, the seat cushion 2B is positioned by the base bracket 7 in the front-back and up-down directions.

Next, as shown in FIG.
5c is used to rotate the clip 15 backward A, so that the upper shaft 1 of the base bracket 7 is
Press-fit 5b. In this state, the seat cushion 2
B is hinged to the base bracket 7 with a clip 15.

Thereafter, when the seat cushion 2B is rotated to the rear A seating position about the first shaft 9 of the base bracket 7, as shown in FIG. 4C, the second shaft 13 of the hinge bracket 11 is The bracket 7 is fitted into the front recess 7c of the bracket 7 from the front. In this state, the front portion of the seat cushion 2B is hinged by a hinge mechanism 16, and the rear portion is locked to the base bracket 6 by a catch mechanism (not shown).

When the mounting of the seat cushion 2B is completed in this way, a large load in the left-right direction is strongly applied to both sides 7a of the base bracket 7 of the base frame 6 and both sides 11a of the hinge bracket 11 of the seat cushion 2B. Can receive.

In addition, a large load in the front-rear direction causes the rear recess 11b of the hinge bracket 11 to face downward with the rotation of the seat cushion 2B to the seating position, and the rear recess 11b
Is fitted into the first shaft 9 of the base bracket 7 from above.
1b and the first shaft 9 of the base bracket 7 can securely receive.

Further, a large vertical load causes the second shaft 13 of the hinge bracket 11 to be fitted into the front concave portion 7c of the base bracket 7 from the front as the seat cushion 2B rotates to the seating position. As a result, the front recess 7c of the base bracket 7 and the second shaft 13 of the hinge bracket 11 can securely receive.

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

On the other hand, when the seat cushion 2B is removed, the seat cushion 2B is turned to the front B flip-up position, as shown in FIG. 15 is rotated forward B to remove the press fit of the upper concave portion 15b from the first shaft 9 of the base bracket 7.

When the seat cushion 2B is moved forward B as shown in FIG. 4A with the flip-up posture, the rear recess 11b of the hinge bracket 11 is fitted from the first shaft 9 of the base bracket 7. Missing.

Therefore, the seat cushion 2B can be attached to and detached from the base frame 6 simply by moving and rotating the seat cushion 2B and rotating the clip 15, so that the seat cushion 2B can be attached and detached easily and quickly.

When the clip 15 is formed of a synthetic resin, for example, polyacetal containing glass fiber, the elasticity of the clip 15 makes it easy to press-fit and un-fit the shafts 9 and 13, and the elasticity of the clip 15 causes running vibration and the like. As a result, the rattling of the seat cushion 2 </ b> B due to this can be absorbed.

[0034]

As is apparent from the above description, the hinge structure according to the present invention is such that the large load in the front-rear direction when the seat cushion is attached is reduced by the rear recess of the seat cushion and the first shaft on the base frame side. The large load in the vertical direction can be received by the second shaft on the seat cushion side and the front recess on the base frame side, so that the structure can withstand a large load in the front-rear and vertical directions. Become like

In addition, the seat cushion can be attached and detached simply and quickly by simply turning and moving the seat cushion and the clip.

According to a second aspect of the present invention, when the upper concave portion of the clip is detachably press fitted to the first shaft, and a manual operation portion for detaching operation is formed near the upper concave portion,
The press fit of the upper concave portion can be easily detached by the manual operation portion.

[Brief description of the drawings]

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

FIG. 2A is a bottom perspective view of a seat cushion,
(B) is a perspective view of a base frame portion.

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]

 2 Rear seat 2B Seat cushion 6 Base frame 7 Base bracket 7c Front recess 9 First shaft 11 Hinge bracket 11b Rear recess 13 Second shaft 15 Clip 15a Lower recess 15b Upper recess 15c Operation section 16 Hinge mechanism

Claims (2)

[Claims] 1. A seat cushion in which a seat cushion placed on a base frame or the like can be flipped forward while being rotated by a front hinge mechanism. A base bracket provided with one shaft and a front concave portion that opens forward;
A hinge bracket provided with a rear concave portion that opens rearward and an S-shaped clip in which a lower concave portion is press-fitted on the second shaft is attached to a seat cushion, and the rear concave portion of the hinge bracket is flipped up. After the clip is rotated after being fitted to the first shaft of the base bracket from the front, and the upper concave portion is pressed into the first shaft from above, the seat cushion is turned to the rear seating position around the first shaft. While moving, the second shaft is fitted and attached to the front recess of the hinge bracket from the front,
Rotate the seat cushion to the forward flipping position,
The press fit of the upper concave portion of the clip is removed from the first shaft, the seat cushion is moved forward, the rear concave portion of the hinge bracket is disengaged from the first shaft of the base bracket, and the seat cushion is removed. The hinge structure of the removable seat cushion. 2. An attachment / detachment according to claim 1, wherein the upper concave portion of the clip is detachably press-fittable to the first shaft, and a manual operation portion for detachment operation is formed near the upper concave portion. Hinge structure of the expression seat cushion.