JP2002238701A - Sofa or sofa bed with seat back which rises and falls at free angles of inclination - Google Patents

Abstract

PROBLEM TO BE SOLVED: To newly provide a sofa or sofa bed with a seat back which rises and falls at infinite angles by a switch or remote controller annexed thereto. SOLUTION: The sofa or sofa bed with the seat back which rises and falls at the free angles of inclination is constituted by propping up and supporting the seat back by L-shaped fixing boards, pivotally attaching the rear parts of the L-shaped fixing boards to the rods of cylinders disposed to face backward under a seat, disposing turning fulcra between the fixing members at the undersides of the front parts and turning the L-shaped fixing boards around the turning fulcra by the expansion and contraction action of the rods of the cylinders thereby tilting the seat back to rise and fall at the free angles of inclination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sofa with a backrest and a sofa bed which can be tilted up and down freely.

[0002]

2. Description of the Related Art Conventionally, the backrest of a sofa or a sofa bed is switched up and down in several stages by a ratchet method, or the upper body side of a bed is moved up and down by a vertical cylinder like a hospital nursing bed. There is something that is.

[0003]

However, the ratchet method has a problem that it can be switched up and down only at a limited angle of inclination, and that the angle switching operation is difficult for an elderly person or a child without power. The latter has a problem that it cannot be applied to a sofa or the like because it requires a height space for installing a vertical cylinder.

[0004] Therefore, an attempt has been made to push and pull the backrest with a horizontally expanding and contracting cylinder rod so that the backrest can be turned upside down.

[0005]

According to the present invention, a backrest is supported and supported by an L-shaped fixing plate, and a rear portion of the L-shaped fixing plate is pivotally attached to a rod of a cylinder provided rearward in a stool, and a front lower portion is provided. Is provided with a rotation fulcrum between it and the fixing member, and the L-shaped fixing plate is rotated based on the rotation fulcrum by the expansion and contraction operation of the rod of the cylinder so that the backrest can be tilted up and down freely. Thus, such a problem was solved.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A backrest 2 of a sofa and a sofa bed 1 is supported and supported by an L-shaped fixing plate 3 having a rear lower end and a bottom surface of an L-shaped frame 2a. Frame 4 of stool 4
a The tip of a rod 6 projecting rearward from the rear end of the cylinder 5 inserted rearward into the lower central portion is pivotally attached 8 to the front end of a mounting plate 7 extending from the rear of the L-shaped fixing plate 3. Reference numeral 9 denotes a rotation fulcrum provided below the front end of the L-shaped fixing plate 3. The fulcrum 9 pivotally attaches the mounting plate 11 of the L-shaped fixing plate 3 to the rear end of a fixing member 10 arranged in parallel on the cylinder 5. It is composed.

[0007] Both ends of the frame 2a of the backrest 2 are connected to and supported by the frame of the seat 4 by rotatable connecting arms 12a and 12b.

The cylinder 5 is connected to a remote controller 14 by wire 13 or wirelessly. Accordingly, when the cylinder 5 is pushed and actuated with the remote controller 14, the rod 6 is extended and the backrest 2 is
Is erected to be erected at a desired angle.
Conversely, when the pulling operation is performed, as shown in FIG. 3, the backrest 2 tilts and turns until it becomes horizontal. Instead of the remote controller 14, a switch (not shown) attached to an appropriate position on the backrest 2 or the stool 4 can be used.

[0009]

According to the present invention, the backrest is supported and supported by the L-shaped fixing plate which is rotated by the cylinder based on the rotation fulcrum as described above.
There is an effect that the player falls down without bending by utilizing 0%.

[0010] There is an effect that the backrest can be smoothly turned up and down by pushing and pulling the cylinder.

[0011] With the simple equipment, the backrest can be freely turned upside down by the remote control even when sitting without taking up space.

Unlike the switching by the ratchet method, there is an effect that the desired angle can be smoothly adjusted over the entire angle from the standing up to the horizontal inversion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a simplified framework of a sofa and a sofa bed.

FIG. 2 is a sectional view of the same.

FIG. 3 is a cross-sectional view showing a state in which the backrest is horizontally lying down by pulling the cylinder.

[Description of Signs] 1 is a sofa, sofa bed 2 is a backrest 2a is a frame 3 is an L-shaped fixing plate 4 is a stool 4a is a frame 5 is a cylinder 6 is a rod 7 is a mounting plate 8 is a pivot 9 is a pivot 10 Is a fixing plate 11 is a mounting plate 12a, 12b is a connecting arm 13 is a wired 14 is a remote controller

Claims (4)

[Claims] 1. A backrest is supported and supported by an L-shaped fixing plate,
The rear part of the L-shaped fixing plate is pivotally attached to a rod of a cylinder provided rearward below the stool, and a pivot point is provided below the front part between the L-shaped fixing plate and a fixing member. A sofa and a sofa bed with a backrest that can be freely tilted and tilted, wherein the backrest is tilted freely at an angle by rotating the plate based on a rotation fulcrum. 2. A sofa with a backrest which can be tilted and tilted freely according to claim 1, wherein the cylinder is operated by a switch provided at an appropriate position on a seat or a hand-held remote controller connected by wire or wireless. ， Sofa bed. 3. The tilt according to claim 1, wherein the cylinder is inserted inwardly below the stool in a rearward direction, and both ends of the backrest or an appropriate position is connected to the stool by a rotatable support arm and supported. A sofa with a backrest that can be tilted up and down freely,
Sofa bed. 4. An L-shaped fixing plate for supporting and supporting a backrest of a sofa or a sofa bed, a cylinder inserted rearward in a stool, and a rear portion of the L-shaped fixing plate pivotally attached to a rod of the cylinder. A rotation fulcrum is provided between the subordinate and the fixed member,
A backrest for a sofa or a sofa bed, characterized in that the backrest supported and supported by the L-shaped fixing plate is tilted up and down freely by the expansion and contraction operation of the cylinder based on the pivot point. Raising device.