JP2012143357A - Reclining type seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reclining type seat in which the surrounding of a waist can be supported without applying a cushion material between a backrest and a back, and the waist can be supported with a proper strength by the strength or intensity of the supporting automatically being changed when adjusting the inclining angle of the backrest.SOLUTION: In the reclining type seat having the backrest electrically rearward inclining down and forwardly inclining up, a pusher 6 is turnably arranged in a backrest frame 7, a supporter 20 is arranged behind the pusher 6, the pusher 6 is pushed out to a backrest cushion side by the supporter 20 as the backrest erects forward to push out the backrest cushion forward, the backrest is separated from the supporter 20, turns downward by its own weight, is separated from the backrest cushion side, gradually reduces the pushing out of the backrest cushion, and releases the same as the backrest inclines rearward.

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 adjust the backrest angle, seat position, footrest position and height according to the body shape and preference of the person (user) to be seated, so it is comfortable and impossible for the user. It does not impose a posture, provides a comfortable sitting comfort, and is suitable for people with back pain.

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 user's upper body weight 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 and the sitting comfort is deteriorated, or if the tilt angle of the backrest is changed, the position and height of the cushioning material must be changed accordingly.

  The problem to be solved by the present invention is that it is possible to support the vicinity of the waist even if the cushioning material is not assigned between the backrest and the back, and the strength of the support automatically increases as the tilt angle of the backrest is adjusted. The object is to provide a reclining sofa, chair, and bed (hereinafter collectively referred to as "sitting tools") that can be changed and supported with appropriate strength.

  The reclining seating device of the present invention is a reclining seating device comprising at least a seat and a backrest, tilted rearward electrically, and having a backrest standing upright, wherein the cushion is placed forward on the back side of the backrest cushion. The pusher pushes the backrest cushion forward as the backrest stands up and pushes the backrest cushion forward, and the backrest moves away from the back cushion side as the backrest tilts backward. The push-out of the cushion is reduced and released.

  The reclining seating tool of the present invention is the reclining seating tool, wherein the pressing tool is rotatably provided on the backrest frame, a support tool is provided behind the pressing tool, and the pressing tool stands up in the forward direction. As the backrest is pushed to the back cushion side by the support tool, the back cushion is pushed forward, and as the backrest tilts backward, it turns away from the support tool and turns downward under its own weight and gradually moves away from the back cushion cushion side. The pushing out of the back cushion can be reduced and released.

  In the reclining seating device of the present invention, in the reclining seating device, the pressing tool may be a fixed one, a flexible one, or a restoring member.

  The reclining-type seating tool of the present invention is the reclining-type seating tool, in the backrest cushion, between the backrest cushion and the front cushion disposed in front of the backrest cushion, or between the backrest cushion and the pusher. An accommodating portion into which the pad can be taken in and out can be provided.

The reclining seat of the present invention has the following effects.
(1) Since the pusher approaches the backrest cushion side and pushes the backrest cushion forward when the backrest stands upright, set the position of the pusher when the backrest is raised, for example, to a position corresponding to the waist or its vicinity. In this case, the back cushion, which is pushed out by the pusher, is pressed near the user's waist, so that the burden near the lumbar spine is lightened and the seating when the back is standing is easy.
(2) Since the push-out of the backrest cushion by the pusher decreases as the backrest tilts backward, the pusher is automatically adjusted according to the tilt angle of the backrest, and the back is moderately strong Pressed with. In addition, when the backrest is tilted and the pressing by the pusher is released, the back and waist are not forcedly pressed, so that the backrest can be drowned in a natural posture.
(3) If the pusher is flexible or restorable, it will be deformed according to the body shape and weight of the user, the pushout strength will be adjusted automatically, and excessive force (push) will be applied to the back and waist. It is easy.
(4) Accommodates if an accommodating part capable of accommodating an auxiliary pad is provided inside the backrest cushion, between the backrest cushion and the front cushion provided on the front surface, or between the backrest cushion and the pusher. By inserting an auxiliary pad into the part, the strength and hardness of pressing the back and waist can be adjusted, and a comfortable sitting comfort can be ensured.

The example of the sofa of this invention, which shows an example of the backrest frame portion in a state where the backrest stands upright. The schematic explanatory drawing of the state which excised a part of the backrest frame of the state of FIG. The schematic explanatory drawing of the state which inclined the backrest frame backward from the state of FIG. Side surface explanatory drawing which shows the relationship between the backrest frame in the state of FIG. 1, a pushing tool, and a support tool. Side surface explanatory drawing which shows the relationship between the backrest frame in the state which inclined the backrest frame back from the state of FIG. 1, a pushing tool, and a support tool. Side surface explanatory drawing which shows the relationship between the backrest frame in the state which tilted back further from the state of FIG. 5 in the state of FIG. 5, a pushing tool, and a support tool. (A) shows an example of the sofa of the present invention, and is a side view of a state in which a part of the backrest sofa is cut when standing upright, and (b) is the tip of the pusher when standing up (a). Explanatory drawing of the distance with a receiving tool. (A) is a side view when the backrest sofa is tilted rearward from the state of FIG. 7, and (b) is an explanatory diagram of the distance between the tip of the pusher and the receiver when tilting (a). (A) is a side view when the backrest sofa is further tilted backward from the state of FIG. 8, and (b) is an explanatory view of the distance between the distal end portion of the pusher and the receiver when tilting (a). The partially cutaway side view in the case of putting an auxiliary pad in a accommodating part in the sofa of this invention. Explanatory drawing in the case of showing the other example of the sofa of this invention, and using several coil springs collectively as a pushing tool. Explanatory drawing at the time of using a wave spring for a pushing tool, showing the other example of the sofa of the present invention.

(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.

  As shown in FIGS. 7A to 9A, the reclining sofa of the present invention includes a seat 1, armrests 2 provided on both sides of the seat 1, and a backrest 3 provided behind the seat 1. And a footrest 4 provided in front of the seat 1 and a pusher 6 that pushes a cushion (backrest cushion) 5 of the backrest 3 forward.

  The seat 1 is seated by a user, and a seat cushion is provided on a seat frame 1a (FIG. 1) in the same manner as an existing sofa seat.

  In the armrest 2, the outer periphery of the armrest frame 2a (FIG. 1) is covered with an armrest cushion. As shown in FIG. 1, the armrest frame 2a is formed by bending a round pipe into a square shape (a part thereof is shown in FIGS. 1 to 3), and is arranged on the left and right sides in the width direction of the seat frame 1a. The armrest frame 2a may be made of wood. The shape can be square, plate, or the like.

  In the backrest 3, the outer periphery of the backrest frame 7 is covered with a covering material, and a backrest cushion 5 is provided on the front surface thereof.

  The footrest 4 is used to place a foot, and the outer periphery of the foot frame is covered with a cushion material, like the footrest of an existing sofa.

  The reclining mechanism of the seat 1, the backrest 3, and the footrest 4 may be a reclining structure and mechanism similar to an existing reclining sofa, or a new structure and mechanism. In any case, the seat frame 1a is provided with a drive unit such as an electric motor and an electric cylinder, and when the drive unit is operated by a remote controller or the like, the drive unit operates and the backrest 3 is shown in FIG. 8), when the seat frame is slid forward by the operation of the drive unit, the footrest 4 extends forward, and the seat frame 1a is When it is slid backward (pulled back), the backrest 3 stands up forward and the footrest 4 is folded under the seat 1.

  The pusher 6 pushes the lower part 5a of the backrest cushion 5 (the part that is in the vicinity of the waist of the seated person) 5a forward, and presses the backrest cushion 5 near the waist of the user to support the vicinity. When the backrest 3 stands as shown in FIG. 7 (a), the pusher 6 pushes the lower portion 5a of the backrest cushion 5 forward, and the backrest 3 becomes as shown in FIG. 8 (a) and FIG. 9 (a). The push-back cushion 5 pushes out gradually as it tilts backward, and in the state of FIGS. 8A and 9A, the push-out by the pusher 6 is released so that the back-cushion cushion 5 is not pushed out. .

  As shown in FIG. 1, the backrest frame 7 has two vertical members 10 (FIG. 1) connected by an upper horizontal member 11 and a lower horizontal member 12, and the lower ends of both vertical members 10 are seat frames 1a. The seat frame 1a and the backrest frame 7 are interlocked to each other by a connecting jig 13 so as to be rotatable. Both vertical members 10 are also connected by several supports 14. Although the illustrated support tool 14 is a rubber belt, the support tool 14 supports the backrest cushion 5 (FIG. 7). Therefore, any other object, for example, a seat, can support the backrest cushion 5. Although it may be a net or a net, a flexible or stretchable material that stretches somewhat when pushed from the back by the pusher 6 as shown in FIG. 1 is desirable.

  As apparent from FIGS. 4 to 6, the pusher 6 has a drum shape (a drum shape) in which the front surface 6 a protrudes forward, the back surface 6 b has an L shape, and the back surface 6 b has a plate-like attachment. A material 16 is attached. A rotating roller 15 is attached to the protruding portion 6c of the back surface 6b. A support shaft 17 is attached to the upper portion of the attachment member 16, and the support shaft 17 is rotatably attached to the left and right vertical plates 10 of the backrest frame 7 as shown in FIGS. 6 is suspended between the vertical plates 10.

  The support frame 20 in FIG. 1 is provided between an L-shaped lower bracket 30 and an L-shaped upper bracket 31 which are welded and fixed to the rear portions of the left and right armrest frames 2a (FIG. 1). A support 21 (FIG. 4) having a triangular side shape is attached to the inner surface of the support frame 20. This receiving tool 21 is an inclined surface whose receiving surface 22 (FIG. 4) becomes higher from the top to the bottom. When the armrest frame 2a is made of wood, the brackets 30 and 31 are not welded but screwed. The inclination angle of the receiving surface 22 can be arbitrarily changed.

The rotating roller 15, the receiving member 21, and the backrest frame 7 shown in FIG.
(1) When the backrest frame 7 is tilted rearward as shown in FIGS. 9A and 9B, the rotating roller 15 is separated from the receiving surface 22 of the receiving member 21 and is supported by the plate-like support member 18. Has been. At this time, the distance between the receiving surface 22 and the tip 6a of the pressing tool 6 is L1.
(2) When the backrest frame 7 rises slightly as shown in FIGS. 8A and 8B, the rotating roller 15 moves upward along the inclination of the receiving surface 22 while hitting the receiving surface 22 of the receiving device 21. At this time, the distance between the receiving surface 22 and the tip 6a of the pusher 6 is L2, which is smaller than L1. At this time, when the tip of the tip 6a of the pusher 6 pushes the lower part 5a of the backrest cushion 5 disposed on the front surface, the lower part 5a is gradually pushed out.
(3) When the backrest frame 7 stands as shown in FIGS. 7A and 7B, the rotating roller 15 moves upward while contacting the receiving surface 22 of the receiving member 21, and the roller mounting jig 33 and the receiving surface are moved. When the angle θ of 22 reaches approximately 90 degrees, the rotating roller 15 does not move upward any further. As the backrest frame 7 stands up, the distance between the receiving surface 22 and the front surface 6a of the pusher 6 shown in FIG. 7B becomes L3 and becomes smaller than L2. At this time, the lower end 5a of the backrest cushion 5 disposed on the front surface 6a is strongly pressed by the tip of the front surface 6a of the pusher 6, and the lower portion 5a is pushed out most strongly.

  The explanations of the above (1) to (3) are explanations when the backrest 3 stands up from the tilted state, but when tilting from the standing state, the reverse of the movements of (1) to (3) above. Works with flow.

(Other example 1 of pressing tool)
The pusher 6 can have other shapes and structures. As an example, the one shown in FIG. 11 is one in which several coil springs 25 are arranged in the same direction (with the axes aligned in the same direction) and wrapped in a sheet or bundled. Instead of the shaped pusher 6, it can be used by being attached to the attachment 16 (FIG. 4). In this case, the rotating roller 15 and the receiving member 21 are the same as in FIG. 4. When the backrest is raised, the pushing by the coil spring 25 (pushing tool 6) becomes stronger, and the pushing becomes weaker as it tilts backward. Release the push. Since the coil spring 25 is elastic, the repulsion (pushing) when it is leaned against the backrest cushion becomes soft and no excessive force is applied to the back and waist.

(Other example 2 of pressing tool)
A plurality of S-shaped springs 26 as shown in FIG. 12 are used side by side for the pusher 6, and they can be used by being attached to the attachment material 16 (FIG. 4) instead of the drum-like pusher 6 of FIG. 1. it can. The rotating roller 15 and the receiving member 21 in this case are also the same as in the case of FIG. 4, and when the backrest 3 stands up, the pushing by the S-shaped pulling 26 (the pushing tool 6) becomes stronger, and the pushing becomes weaker as it tilts backward, Release the push when tilting. Since the S-shaped spring 26 is also elastic, the repulsion (pushing) when it falls on the back cushion 5 becomes soft, and no excessive force is applied to the back and waist. The S-shaped spring 26 can be attached to the attachment member 16 (FIG. 4) by rotating its direction by 90 degrees.

  The cushion for the seat 1, the back cushion 5 and the footrest 4 in FIG. 7 (a) are urethane cushions used for existing sofas, or other materials such as a low resilience cushion or cotton. It may be made of a material such as

  The backrest cushion 5 shown in FIG. 7 (FIG. 7A) has a three-step corrugated front surface (back support surface), and the lowermost cushion 5b has a small bag shape as shown in FIG. The pad 24 (FIG. 10) can be taken in and out. The auxiliary 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 auxiliary pad 24 can be selected according to the user's preference. The storage method, storage structure, storage location, etc. of the auxiliary pad 24 may be structures or locations other than the method shown in FIG.

(Action of the pusher)
The pusher 6 operates as follows along with the operation (reclining) of the reclining sofa.
(1) In the state where the backrest 3 stands up as shown in FIG. 7A, the rotating roller 15 abuts against the receiving surface 22 of the receiving tool 21 and is pushed forward to push the pushing tool 6 forward, Thereby, the lower part 5a (FIG. 7A) of the backrest cushion 5 arranged on the front surface of the pusher 6 is pushed forward, and the lower part 5a hits the vicinity of the waist of the user and can support the vicinity of the waist.
(2) When the backrest 3 is in the standing state of FIG. 7A, the reclining drive unit is operated to tilt the backrest 3 backward as shown in FIG. When the rearward tilting proceeds to the position shown in FIG. 8A, the rotating roller 15 moves away from the receiving surface 22 of the receiving tool 21. Then, the push of the lower part 5a (FIG. 8A) of the backrest cushion 5 disposed on the front surface of the pusher 6 is released.
(3) When the backrest 3 is further tilted rearward as shown in FIG. 9A, the rotating roller 15 is detached from the receiving surface 22 of the receiving device 21, and the backrest cushion 5 disposed on the front surface of the pressing device 6. The lower portion 5a (FIG. 9 (a)) remains pressed.

  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.

1 seat 1a seat frame 2 armrest 2a armrest frame 3 backrest 4 footrest 5 backrest cushion 5a lower part of the backrest cushion 5b bottom cushion 6 pusher 6a front of the pusher 6b back of the pusher 6c Projection 7 (back of pusher) 7 Backrest frame 10 Vertical member 11 Upper cross member 12 Lower cross member 13 Connecting jig 14 Support member 15 Rotating roller 16 Mounting member 17 Support shaft 18 Support member 20 Support frame 21 Receiving member 22 Receiving surface 24 Auxiliary pad 25 Coil spring 26 S-shaped spring 30 Lower bracket 31 Upper bracket 33 Roller mounting jig

Claims (4)

A reclining seat that has at least a seat and a backrest, is tilted backwards electrically, and has a backrest that stands up forward.A pusher that pushes the cushion forward is provided on the back side of the backrest cushion. As the backrest stands, the device approaches the backrest cushion and pushes the backrest cushion forward, and as the backrest tilts backward, it moves away from the backrest cushion side to reduce and release the backrest cushion. A reclining seat that is made of   2. The reclining seating tool according to claim 1, wherein the pusher is rotatably provided on the backrest frame, a support tool is provided behind the pusher, and the pusher is supported by the support tool as the backrest stands forward. Pushed to the back cushion side to push the back cushion forward, and as the back tilt tilts backward, it turns away from the support and turns downward under its own weight and gradually pushes away from the back cushion side. Reclining type seating tool characterized by reducing and releasing   The reclining seating tool according to claim 1 or 2, wherein the pressing tool is a fixed one, a flexible one, or a restoring member.   The reclining type seating device according to any one of claims 1 to 3, wherein the backrest cushion, or between the backrest cushion and the front cushion disposed in front of the backrest cushion, or the backrest cushion and the pressing device. A reclining-type seating tool, characterized in that an accommodating portion in which an auxiliary pad can be taken in and out is provided.

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