JP2012075791A - Recliner chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recliner chair in which supporting rigidness and strength automatically vary with the adjustment of the inclination angle of a backrest and thereby support can be performed by suitable strength.SOLUTION: In the recliner chair, a backing member that pushes a backrest cushion forward is installed. The backing member is arcuately curved and protrudes to the cushion side of the backrest, wherein the curvature becomes gentler as the backrest inclines backward and the protrusion forward becomes lower, and wherein the curvature becomes sharper as the backrest stands forward and the protrusion forward becomes higher. The backing member for use may be one having flexibility and/or restoring property. The backing member is mounted on a backrest frame and is hidden in the back of the backrest cushion to be installed in front of the backrest frame. Between the backing member and the backrest cushion or in the backrest cushion, a storage part, in which a pad can be put in and taken out, may be provided.

Description

  The present invention relates to a seating tool such as a sofa, a chair, and a bed, and more particularly to a reclining seating tool that can tilt (tilt) a backrest backward.

  There is known a reclining sofa that can be tilted backward or raised forward by an electric motor (Patent Document 1). In some sofas, the seat slides back and forth with the backrest reclining, and the footrest moves forward and backward.

  The reclining sofa can be adjusted to suit the preference of the person (user) who sits, such as the angle of the backrest, the position of the seat, the position and height of the footrest, etc. It is particularly suitable for people with back pain who are not forced to sit down.

JP 2002-17514 A

  Since the reclining sofa described in Patent Document 1 has a flat back cushion (the surface that hits the back), the back is supported by the back with a gap between the cushion and the waist. In addition, the weight of the upper body of the user is placed on the waist, the waist is burdened, and if the user sits for a long time, the area around the waist may get tired.

  In order to reduce the burden on the waist, you can sit in an easy posture and cushion material may be placed between the waist and backrest, but it is troublesome to attach or remove the cushion material. It was. In addition, the cushioning material is misaligned during use, resulting in poor sitting comfort, and the position and height of the cushioning material have to be changed when the inclination angle of the backrest is changed.

  The problem to be solved by the present invention is that the upper part of the waist can be supported without a cushioning material between the backrest and the back, and when the inclination angle of the backrest is adjusted, the strength and strength of the support are accordingly increased. The object of the present invention is to provide a reclining sofa, chair, and bed (hereinafter collectively referred to as a “sitting tool”) that can be supported with appropriate strength by changing its length automatically.

  The reclining seating device of the present invention is a reclining seating device having at least a seat and a backrest, and is provided with an abutting device for pushing the cushion forward on the back side of the backrest cushion. It protrudes toward the cushion side of the droop, and as the backrest falls backward, the curve becomes looser and the forward protrusion becomes lower, and as the backrest stands forward, the curve becomes steeper and the forward protrusion increases. is there.

  The reclining seating device of the present invention is the reclining seating device, wherein the movable body is provided slidably on the back, the upper end side of the abutment is attached to the movable body and the lower end side is attached to the lower side of the backrest, If the movable body slides above the backrest as the drooping falls backward, the curve becomes loose and the forward projection becomes low, and if the movable body slides below the backrest as the backrest rises forward, the curve suddenly So that the forward protrusion is higher.

  In the reclining seating device of the present invention, in the reclining seating device, the abutment device may be a flexible or / and restorable one, for example, a spring. The abutment is attached to the backrest frame so as to be hidden behind a backrest cushion provided in front of the backrest frame.

  In the reclining seating device of the present invention, the reclining seating device may be provided with a receiving part capable of putting in and out the pad between the padding device and the backrest cushion in front of the padding device or the backrest cushion.

The reclining seat of the present invention has the following effects.
(1) Since the brace protrudes in an arc and pushes the backrest cushion forward, the position of the brace when the backrest is raised can be set to a desired position, for example, a position on the waist. For example, the backrest cushion and the upper part of the user's waist, which is most likely to have a gap, contact the upper part of the waist to support the vicinity of the lumbar vertebrae, reducing the burden on the lumbar vertebrae and making it easier to sit on the backrest Become.
(2) As the backrest falls backward, the arc-like patch becomes looser and the forward projection becomes lower, and as the backrest stands forward, the curvature becomes sharper and the forward projection becomes higher. So, if the backrest is defeated, the contact (pushing) of the backing to the back will weaken, so the backing will contact the back with a moderate strength, and the back will not be hurt too much and the back will tilt. Will be easier and will not put an excessive burden on the waist.
(3) If the spring is a spring having elasticity and restoration, it can be deformed according to the body shape and weight of the user, and it is easy to apply an excessive force (push) to the back.
(4) If an accommodating part that can accommodate the auxiliary pad is provided between the pad and the backrest cushion or inside the backrest cushion, the position of the back that is pushed by inserting the auxiliary pad into the accommodating part, the strength that is pushed The height, hardness, etc. can be adjusted, and a comfortable sitting comfort can be ensured.

The example of the sofa of this invention is a partial cross-section outline side view in the state where the backrest stood up. The example of the sofa of this invention is a partial cross-section outline side view of the state in which the backrest fell backward. The partial cross-sectional outline explanatory drawing which shows an example of the sofa of this invention, and puts a cushion for thickness adjustment of a backrest. The perspective view of the state which showed an example of the sofa of this invention and the curve of the pushing tool became sudden at the time of a backrest standing. The perspective view of the state which showed an example of the sofa of this invention and in which the curve of the pushing tool became loose at the time of back tilt.

(Embodiment)
The reclining seating device of the present invention includes other than a sofa (chair, bed, etc.) if it is reclining, and includes sofas of various forms such as one-seat, two-seat, three-seat, The embodiment described below is a case of a single-seat reclining sofa.

  The reclining sofa of FIG. 1 includes two armrests 1 provided on both side surfaces of a fixed frame (not shown), and a seat 2 disposed between both armrests 1 and slidable back and forth on the fixed frame. The backrest 3 provided at the back of the seat 2 and the footrest 4 provided at the front of the seat 2 are provided, and the backrest 3 is provided with an abutment 5 that curves and projects forward.

  The armrest 1 is covered with a cushion on the outside of two armrest frames provided on both sides of the fixed frame, and the outside is covered with a surface material such as leather or cloth.

  The seat 2 is for a user to sit, and a seat cushion 7 is provided on a seat frame 6 disposed between the armrests 1 and slidable in the front-rear direction of the fixed frame. ing.

  In the backrest 3, the outer periphery of the backrest frame 8 is covered with a covering material 9, and a backrest cushion 10 is provided on the front surface.

  In the footrest 4, the outer periphery of the foot frame is covered with a cushioning material.

  The reclining mechanism of the seat 2, backrest 3, and footrest 4 may be a reclining structure or mechanism similar to an existing reclining sofa, or may be a new structure or mechanism. A drive unit such as a motor and an air cylinder is connected, and when the seat frame 6 is slid forward from the state of FIG. 1 by the drive unit as shown in FIG. 2, the backrest 3 falls backward and the footrest 4 extends forward, When the seat frame 6 is slid backward (pulled back) as shown in FIG. 1 from the state of FIG. 2, the backrest 3 rises forward and the footrest 4 is folded under the seat 2. The reclining operation can be performed by a remote control.

  The abutment tool 5 pushes the backrest cushion 10 forward, presses the backrest cushion 10 near the waist of the user and supports the vicinity thereof, and forwards when the backrest 3 is raised as shown in FIG. The backrest cushion 10 disposed on the front surface of the abutment 5 protrudes forward, and the protrusion 11 of the backrest cushion 10 hits the vicinity of the waist of the user so that the vicinity of the waist is supported. When the backrest 3 is tilted backward (inclined backward) as described above, the abutment 5 is stretched and the curve thereof is loosened so that the push near the waist is weaker than when the backrest 3 stands.

  In the backrest frame 8, two vertical members 12 (FIG. 4) are connected by an upper horizontal member 13 and a lower horizontal member 14, and the lower ends of both vertical members 12 are connected to the rear end of the seat frame 6. The jig 15 is rotatably connected. The upper cross member 13 is a belt-like flat plate, and the lower cross member 14 is a belt-like plate, but its center portion in the horizontally long direction projects forward from both ends in the horizontally long direction. Two guide plates 16 (FIG. 4) are attached to the inner surfaces of the two vertical members 12 obliquely in the vertical direction, and a guide groove 17 is formed between the two guide plates 16. In the guide groove 17, both lateral ends of a plate-shaped movable body 18 (FIG. 4) are fitted so that the movable body 18 can slide up and down along the guide groove 17. The upper end of a U-shaped guide tool 19 (FIG. 4) having a skirt spread is attached to the movable body 18 so as to be rotatable by a connecting jig 19a (FIGS. 4 and 5) as shown in FIGS. The lower end portion of the guide tool 19 is connected to the seat frame 6 by a connecting jig 20 (FIG. 4). With this structure, when the backrest frame 8 (FIG. 1) falls backward as shown in FIG. 2, the guide tool 19 rotates and tilts backward, and the movable body 18 moves along the guide groove 17. When the backrest frame 8 (FIG. 2) stands up as shown in FIG. 1 when it moves to the front end side of the drooping frame 8, the guide 19 rotates forward (returns), and the movable body 18 guides along with the rotation. It moves (returns) along the groove 17 to the lower end side of the backrest frame 8.

  An S-shaped spring (wave spring) 5a is used for the abutment 5 and two wave springs 5a are arranged in parallel, and the lower ends of the wave springs 5a are fixed to the lower cross member 14 (FIG. 4), In the state of FIG. 1 in which the upper end is fixed to the movable body 18 (FIG. 4) and the backrest frame 8 stands, the two wave springs 5a are curved in an arc shape and project forward. The two wave springs 5a are connected by a connecting member 21 to suppress left-right deflection. In this state, when the backrest frame 8 (FIG. 1) reclines and tilts backward (becomes the state shown in FIG. 2), the movable body 18 moves to the front end side of the backrest frame 8, and along with that movement, the wave spring 5a. When the interval between the upper end and the lower end of the wave is widened (the wave spring 5a is extended), the curved protrusion of the wave spring 5a is loosened, and the backrest frame 8 stands up (returns to the state shown in FIG. 1). 8, the distance between the upper end and the lower end of the wave spring 5 a is narrowed (the wave spring 5 a is contracted), and the curved protrusion of the wave spring 5 a is abrupt (high). It is.

  In the present embodiment, two wave springs 5a are used as an example of the abutment tool 5. However, the abutment tool 5 may use one wave spring 5a having a wide width, or three wave springs 5a having a narrow width. You may use above. In the present embodiment, only one end of the abutment tool 5 is fixed to the movable body 18, but both ends of the abutment tool 5 are fixed to separate movable bodies, and the curvature of the abutment tool 5 is obtained by approaching and separating from each other. You may be allowed to be swayed. The abutment tool 5 may be of a material other than the wave spring 5a, other material, shape, or structure. For example, it can be deformed from a curved state in an arc shape (arch shape) to a gentle arch shape or flat shape. It may be a leaf spring having flexibility, resilience, and elasticity that can return to the original arc shape, or an elastic bellows-like metal plate.

  The cushions for the seat cushion 7, the backrest cushion 10 and the footrest 4 in FIG. 1 are urethane cushions used for existing sofas, or other materials such as low resilience cushions or cotton. It may be.

  The illustrated backrest cushion 10 (FIG. 1) has a three-step corrugated front surface (back support surface), the lowermost cushion 10a has a small bag shape, and its lower end is sewn to the lower portion of the backrest cushion 10. The upper end is attached to the back cushion 10 by a hook-and-loop fastener or other stoppers 22 so as to be opened and closed, and an accommodation space 23 (FIG. 3) is provided between the back cushion 10 and the lowermost cushion 10a. The auxiliary pad 24 (FIG. 3) can be taken in and out of the accommodation space 23. The pad 24 can be made of the same material as the cushion material or a different material. The size, thickness, storage position (height), etc. of the pad 24 can be selected according to the user's preference.

  In the embodiment of FIG. 3, the storage space 23 is provided between the backrest cushion 10 and the lowermost cushion 10a. However, the storage space 23 can be backrested from other places, for example, from the top of the patch 5 (FIG. 3). It can also be provided between a back sheet (not shown) that covers the front surface of the frame 8 and the backrest cushion 10. In this case, the back cushion 10 can be tilted forward, and a pad can be put in and out of the accommodation space 23 from the back side.

(Effect of the brace)
The said abutment tool 5 operate | moves as follows with operation | movement (reclining) of a reclining type sofa.
(1) In a state where the backrest 3 stands up as shown in FIG. 1, the abutment 5 is curved in a substantially semicircular shape and protrudes forward, and the contact portion of the backrest cushion 10 is pushed forward to The protrusion 11 (FIG. 1) of the drooping cushion 10 hits the vicinity of the user's waist and can support the vicinity of the waist.
(2) When the reclining drive unit is operated and the seat 2 is slid forward from the standing state of FIG. 1, the backrest 3 falls backward as shown in FIG. At this time, the movable body 18 (FIG. 4) slides along the guide groove 17 upward of the backrest 3, the gap between the upper end and the lower end of the wave spring 5a of the abutment 5 is widened, and the wave spring 5a is extended. The curve gradually becomes loose and the contact with the vicinity of the waist becomes loose.
(3) When the backrest 3 is raised from the state of FIG. 2 to the state of FIG. 1, the movable body 18 slides down the backrest 3 along the guide groove 17, contrary to the case where the backrest 3 is tilted. The gap between the upper end and the lower end of the wave spring 5a of the abutment 5 is narrowed and the wave spring 5a is contracted, the arc-shaped curve gradually returns to its original shape and suddenly (projects), hits the waist area (pushing around the waist area) ) Becomes stronger.

  In the above embodiment, a reclining sofa has been described as an example, but various sitting devices having a seat and a backrest, such as chairs used at home, school, office, automobiles, trains, airplane seats, It can be used in a bed or the like. If possible, it can also be used for massage chairs.

DESCRIPTION OF SYMBOLS 1 Armrest 2 Seat 3 Backrest 4 Footrest 5 Suspension 5a Wave spring 6 Seat frame 7 Seat cushion 8 Backrest frame 9 Covering material 10 Backrest cushion 10a Lowermost cushion 11 (Backrest cushion) protrusion 12 Vertical member 13 Upper cross member 14 Lower cross member 15 Connection jig 16 Guide plate 17 Guide groove 18 Movable body 19 Guide tool 19a Connection jig 20 Connection jig 21 Connection material 22 Stopper 23 Storage space 24 Pad

Claims (6)

In a reclining seat with at least a seat and a backrest,
The back of the back cushion is provided with a pad that pushes the cushion forward.The pad is curved in an arc and protrudes toward the back cushion. The reclining seating device is characterized in that, as the backrest rises forward, the curvature becomes sharper and the forward protrusion becomes higher. The reclining seating tool according to claim 1,
The movable body is slidable on the back,
The upper end side of the abutment is attached to the movable body and the lower end is attached to the lower side of the backrest, and the abutment protrudes forward as the movable body slides above the backrest as the backrest falls backward. A reclining type seating tool characterized in that, as the backrest rises forward and the movable body slides below the backrest, the curvature suddenly increases and the forward protrusion increases. In the reclining type seating device according to claim 1 or 2,
A reclining seating device, wherein the abutment device is flexible or / and has a restoring property. The reclining seating tool according to any one of claims 1 to 3,
A reclining-type seating tool, characterized in that the patch is a spring. The reclining seating tool according to any one of claims 1 to 4,
A reclining-type seating device, wherein a pad is attached to a backrest frame and is hidden behind a backrest cushion provided in front of the backrest frame. In the reclining type seating tool in any one of Claim 1 or Claim 5,
A reclining-type seating device comprising an accommodation space in which a pad can be put in and out between a padding device and a backrest cushion in front of the padding device or a backrest cushion.

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