JP7637424B2

JP7637424B2 - Sofa

Info

Publication number: JP7637424B2
Application number: JP2022168809A
Authority: JP
Inventors: 清一上原; 和幸春日
Original assignee: BABAKAGU CO., LTD.
Current assignee: BABAKAGU CO., LTD.
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2025-02-28
Anticipated expiration: 2042-10-21
Also published as: JP2024061092A

Description

本発明はソファに関する。 The present invention relates to a sofa.

ソファには各種形態のものがある。一例として、背凭れの上にヘッドレストが付いたソファがある（特許文献１）。 Sofas come in a variety of configurations. One example is a sofa with a headrest above the backrest (Patent Document 1).

特許文献１のソファは、ヘッドレストを背凭れの上に起こしたり（立ち上げたり）、背凭れの前面に倒したりすることができるようにしてある。ヘッドレストを背凭れの前面に倒すと、背凭れの前面にクッションを配置しなくとも、ヘッドレストに背中を当てて着座することができる。ヘッドレストを背凭れの上に起こすと、背中を背凭れに凭れかけ、頭をヘッドレストに当てて着座することができる。このため、ヘッドレストを倒したり起こしたりするだけで、座り心地の良い姿勢で着座することができるという利点がある。 The sofa in Patent Document 1 is designed so that the headrest can be raised (raised) above the backrest or folded down in front of the backrest. When the headrest is folded down in front of the backrest, a person can sit with their back against the headrest without having to place a cushion in front of the backrest. When the headrest is raised up above the backrest, a person can sit with their back against the backrest and their head against the headrest. This has the advantage that a person can sit in a comfortable position just by folding or raising the headrest.

特許文献１のソファは、背凭れの前面に倒したヘッドレストに背中を凭れかけて着座している状態で、ヘッドレストを背凭れの上に起こすと、背凭れと背中の間の間隔が広くなって後方に倒れ易くなる。後方に倒れないようにするためには、着座している人が背凭れ側（座の後方）に移動する（着座位置を後方にずらす）とか、背凭れと背中の間にクッションを入れるなどしなければならない。しかし、ヘッドレストを背凭れの上に起こす度に後方に着座位置をずらしたり、クッションを入れたりするのは煩わしい。クッションを入れるためにはクッションが必要にもなる。 In the sofa of Patent Document 1, when a person is seated with their back resting against the headrest that is folded down in front of the backrest, if the headrest is then raised up onto the backrest, the gap between the backrest and the person's back becomes wider, making the person more likely to fall backward. In order to prevent the person from falling backward, the person must move towards the backrest (behind the seat) (shift the seating position backward) or insert a cushion between the backrest and the person's back. However, it is a hassle to shift the seating position backward or insert a cushion every time the headrest is raised up onto the backrest. Inserting a cushion also requires a cushion.

背凭れに背中を凭れかけ、ヘッドレストに頭を凭れかけている状態で、ヘッドレストを背凭れの前面に倒すためには、着座している人が座の前方に移動して（着座位置を前方にずらして）、背凭れと背中の間にヘッドレストが入るだけのスペースを作らなければならない。しかし、ヘッドレストを倒すたびに着座位置を前方にずらすのも煩わしい。 When you are leaning your back against the backrest and your head against the headrest, in order to fold the headrest forward over the backrest, you must move forward in the seat (shift your seating position forward) to create enough space between the backrest and your back for the headrest to fit. However, it is also a hassle to have to shift your seating position forward every time you want to fold the headrest.

特開２０１９－１７０６９４号公報JP 2019-170694 A

本発明の解決課題は、背凭れを座面の上で前後移動させることができるようにすること、背クッションを背凭れの上に起こしても、着座者の背中を背凭れに凭れかけることができるようにして、背凭れと背中の間にクッションを入れたり、着座者が着座位置を後方にずらしたりする煩わしさをなくすことにある。 The problem solved by this invention is to make it possible to move the backrest forward and backward on the seat, and to make it possible for the occupant's back to rest against the backrest even when the back cushion is raised above the backrest, eliminating the hassle of having to insert a cushion between the backrest and the occupant's back, or of the occupant shifting their seating position backward.

本発明のソファは、座面の上に背凭れがあり、背凭れの内部に前後移動具があり、背凭れを手動又は電動で前方移動させたり、後方移動させたりすると、前後移動具が背凭れと同様に移動して背凭れが座面の上で前後に移動できるようにしたものである。また、前後移動具を背凭れに内蔵して外部から見えないようにもしてある。 The sofa of the present invention has a backrest on the seat, and a forward/backward moving device inside the backrest, so that when the backrest is moved forward or backward manually or electrically, the forward/backward moving device moves in the same way as the backrest, allowing the backrest to move forward and backward on the seat. The forward/backward moving device is also built into the backrest so that it cannot be seen from the outside.

本発明のソファは、背凭れの他に背クッションを設け、背クッションは背凭れの上に載せたり背凭れの前に降ろしたりすることができ、背凭れの上に載せるとヘッドレストとして使用でき、背凭れの前に降ろすと着座者の背中を支持できる支持クッションとして使用できるようにもしてある。 The sofa of the present invention is provided with a back cushion in addition to the backrest, which can be placed on top of the backrest or lowered in front of the backrest. When placed on top of the backrest, it can be used as a headrest, and when lowered in front of the backrest, it can be used as a support cushion that can support the back of the person sitting on it.

本発明のソファは、背凭れの上で且つ背クッションの背面側に受け材を設け、受け材を背クッションの背面側に連結して、受け材は背クッションを背凭れの上に載せると背クッションで押されて背凭れの上に立ち上がり、背クッションを背凭れの前に降ろすと背クッションに引かれて背凭れの上に倒伏するようしてある。 The sofa of the present invention has a support member on the backrest and on the rear side of the back cushion, and the support member is connected to the rear side of the back cushion so that when the back cushion is placed on the backrest, the support member is pushed by the back cushion and stands up on the backrest, and when the back cushion is lowered in front of the backrest, the support member is pulled by the back cushion and falls down on the backrest.

本発明のソファは次のような効果がある。
（１）背凭れをソファの座面の上で前後移動させて、背凭れと背中の間の間隔を調整することができるので、着座者が着座位置を前後にずらしたり、背凭れと背中の間に入れたりするクッションを別途用意したり、クッションを出し入れする煩わしさがない。
（２）背クッションを、背凭れの上に載せてヘッドレストとしても、背凭れの前に降ろして支持クッションとしても使用することができるので、ソファを、着座者が楽な姿勢になるように使い分けることができる。
（３）受け材が背クッションの背面側で背凭れの上に立ち上がるので、受け材で背クッションを支持することができる。また、背クッションを支持するための支持具を別途用意する必要もない。 The sofa of the present invention has the following effects.
(1) The backrest can be moved forward and backward on the sofa seat to adjust the distance between the backrest and the back of the person sitting, eliminating the need for a seated person to shift their seating position forward or backward, or the need to prepare a separate cushion to place between the backrest and the back of the person sitting, or the hassle of removing and inserting the cushion.
(2) The back cushion can be placed on top of the backrest to serve as a headrest, or can be lowered in front of the backrest to serve as a support cushion, allowing the sofa to be used in a variety of ways to accommodate a comfortable sitting position for the person sitting on it.
(3) Since the support member rises above the backrest on the rear side of the back cushion, the back cushion can be supported by the support member. In addition, there is no need to prepare a separate support for supporting the back cushion.

本発明のソファの一例を示す斜視図。FIG. 1 is a perspective view showing an example of a sofa of the present invention. 本発明のソファの背クッションと受け材の説明図。FIG. 2 is an explanatory diagram of the back cushion and support member of the sofa of the present invention. （ａ）～（ｃ）は本発明のソファにおける背凭れの上げ降ろしの説明図、（ｄ）は背凭れが前方移動した状態の説明図。4A to 4C are explanatory diagrams of raising and lowering the backrest of the sofa of the present invention, and FIG. 4D is an explanatory diagram of the state in which the backrest has moved forward. 本発明のソファに使用される前後移動具の取付け説明図であり、背凭れが座面の後方にある場合の説明図。FIG. 13 is an explanatory diagram of the installation of the forward/backward movement device used in the sofa of the present invention, illustrating the case where the backrest is located behind the seat. 本発明のソファに使用される前後移動具の取付け説明図であり、背凭れが座面の前方に移動した場合の説明図。FIG. 13 is an explanatory diagram for installing the forward/backward movement device used in the sofa of the present invention, illustrating the case where the backrest is moved forward of the seat surface. 本発明のソファに使用される前後移動具の説明図であって、（ａ）は前後移動具の可動ブラケットを前向きにした状態の説明図、（ｂ）は可動ブラケットを上向きにした状態の説明図、（ｃ）は可動ブラケットを後ろ向きにした状態の説明図。1A is an explanatory diagram of a front-to-rear moving device used in the sofa of the present invention, in which (a) is an explanatory diagram of the movable bracket of the front-to-rear moving device when facing forward, (b) is an explanatory diagram of the movable bracket when facing upward, and (c) is an explanatory diagram of the movable bracket when facing backward. 本発明のソファにおいて、受け材が縦向きになった状態の説明図。FIG. 2 is an explanatory diagram of the sofa of the present invention in a state where the support member is in a vertical position. （ａ）～（ｃ）は本発明のソファにおける背クッションの動作説明図。5A to 5C are explanatory diagrams of the operation of the back cushion in the sofa of the present invention. （ａ）～（ｃ）は本発明のソファにおける他の背クッションの動作説明図。6A to 6C are explanatory diagrams of the operation of another back cushion in the sofa of the present invention. （ａ）～（ｃ）は本発明のソファにおける異なる背クッションの動作説明図。4A to 4C are explanatory diagrams showing the operation of different back cushions in the sofa of the present invention. 本発明のソファが二人掛け用ソファの場合であり、（ａ）は背クッションを背凭れの前に降ろした状態の斜視図、（ｂ）は背クッションを背凭れの上に載せた状態の斜視図、（ｃ）は背クッションと受け材の連結説明図。In the case where the sofa of the present invention is a two-seater sofa, (a) is a perspective view of the state in which the back cushion is lowered in front of the backrest, (b) is a perspective view of the state in which the back cushion is placed on the backrest, and (c) is an explanatory diagram of the connection between the back cushion and the support material. 本発明のソファが三人掛け用ソファの場合であり、（ａ）は背クッションを背凭れの前に降ろした状態の斜視図、（ｂ）は背クッションを背凭れの上に載せた状態の斜視図。FIG. 1A is a perspective view of a state in which a back cushion is lowered in front of a backrest, and FIG. 1B is a perspective view of a state in which the back cushion is placed on top of the backrest, in the case where the sofa of the present invention is a three-seater sofa.

（実施形態１）
本発明のソファの実施形態の一例を、図面を参照して説明する。本発明のソファの形状、サイズ等はどのようなものであってもよい。一例として図１～図１０に示したソファは袖や脚等を図示していないものである。本発明のソファは一人掛け用、二人掛け用以上のいずれであってもよい。一例である図１１（ａ）（ｂ）は二人掛け用のソファ、図１２（ａ）（ｂ）は三人掛け用のソファである。 (Embodiment 1)
An example of an embodiment of the sofa of the present invention will be described with reference to the drawings. The sofa of the present invention may have any shape, size, etc. As an example, the sofa shown in Figs. 1 to 10 does not show sleeves, legs, etc. The sofa of the present invention may be either a one-seater sofa or a two-seater or more-seater sofa. As an example, Figs. 11(a) and (b) show a two-seater sofa, and Figs. 12(a) and (b) show a three-seater sofa.

図１のソファは、座１の上面（座面）２の上に背凭れ３と背クッション４と受け材５がある。背凭れ３、背クッション４、受け材５は本革、合成皮革、布等の表材の内側にウレタン、その他のクッション材が内蔵されている。図１の背凭れ３は横長角状であり、背クッション４は背凭れ３と同じ長さの横長であるが、厚さが背凭れ３よりも薄い。受け材５は背クッション４と同じ長さの横長であるが、厚さが背クッション４よりも薄い。図２のように、受け材５の上部５ａは背クッション４の背面に連結されている。 The sofa in Figure 1 has a backrest 3, a back cushion 4, and a support material 5 on the upper surface (seat surface) 2 of a seat 1. The backrest 3, back cushion 4, and support material 5 have urethane or other cushioning materials built inside the outer material such as genuine leather, synthetic leather, or cloth. The backrest 3 in Figure 1 is rectangular, and the back cushion 4 is as long and wide as the backrest 3, but is thinner than the backrest 3. The support material 5 is as long and wide as the back cushion 4, but is thinner than the back cushion 4. As shown in Figure 2, the upper part 5a of the support material 5 is connected to the back surface of the back cushion 4.

［背凭れの動作］
背凭れ３は座１の座面２の後方位置（図３（ｃ））から前方位置（図３（ｄ））まで前方移動可能であり、前方位置（図３（ｄ））から後方位置（図３（ｃ））まで後方移動（戻り移動）可能である。図３（ｃ）の後方位置から図３（ｄ）の前方位置への移動は、手動或いは電動で自動的に行うことができる。手動で行う場合は、例えば、座１に着座している人が、両腕を後ろに回して背凭れ３を前方に引き寄せる（前方移動させる）ことにより行うことができる。図３（ｄ）の前方位置から図３（ｃ）の後方位置への移動は、座１に着座している人が、両腕を後ろに回して背凭れ３を後方に押す（後方移動させる）ことにより行うことができる。 [Backrest movement]
The backrest 3 can move forward from a rear position (FIG. 3(c)) of the seat surface 2 of the seat 1 to a front position (FIG. 3(d)), and can move backward (return) from the front position (FIG. 3(d)) to the rear position (FIG. 3(c)). The movement from the rear position in FIG. 3(c) to the forward position in FIG. 3(d) can be performed manually or automatically by an electric motor. When performed manually, for example, the person sitting on the seat 1 can put both arms behind him/her and pull the backrest 3 forward (move it forward). The movement from the forward position in FIG. 3(d) to the rear position in FIG. 3(c) can be performed by the person sitting on the seat 1 putting both arms behind him/her and pushing the backrest 3 backward (move it backward).

［背クッションの動作］
背クッション４は図３（ａ）～（ｃ）のように背凭れ３の上に載せたり、背凭れ３の前に降ろしたりすることができる。背凭れ３の上に載せるには、座１に着座している人が、両腕を後ろに回して背クッション４を背凭れ３の前面に沿って上方に押し上げることにより行うことができる。背凭れ３の前に降ろすには、着座している人が、両腕を後ろに回して背クッション４を背凭れ３の前面に沿わせて前方に引き下げることにより行うことができる。背クッション４は背凭れ３の上に載せるとヘッドレストとして使用でき、背凭れ３の前面に降ろすと着座者の背中を支持できる支持クッションとして使用できる。背クッション４の載せ降ろしも電動で行うこともできる。図２の４ａは背クッション４の底面、４ｂは前面、４ｃは背面、５ｂは受け材の底面である。 [Back cushion movement]
The back cushion 4 can be placed on the backrest 3 or lowered in front of the backrest 3 as shown in Fig. 3(a) to (c). To place it on the backrest 3, the person sitting on the seat 1 puts both arms behind him and pushes the back cushion 4 upward along the front surface of the backrest 3. To lower it in front of the backrest 3, the person sitting on the seat 1 puts both arms behind him and pulls the back cushion 4 forward along the front surface of the backrest 3. When the back cushion 4 is placed on the backrest 3, it can be used as a headrest, and when it is lowered in front of the backrest 3, it can be used as a support cushion that can support the back of the seated person. The back cushion 4 can also be placed and lowered electrically. In Fig. 2, 4a is the bottom surface of the back cushion 4, 4b is the front surface, 4c is the back surface, and 5b is the bottom surface of the support material.

［受け材の動作］
受け材５は図２のように、上部５ａが背クッション４に連結されており、図３（ｃ）のように背クッション４を背凭れ３の上に載せると、背クッション４で押されて背凭れ３の上で立ち上がって、背クッション４の背面を支持する（背クッション４を立て掛ける）ことができ、図３（ａ）のように背クッション４を背凭れ３の前に降ろすと、背凭れ３の上で前方に倒れて背クッション４から離れない。このように、受け材５が背クッション４の操作と連動するため、操作性も良い。 [Operation of the receiving material]
As shown in Fig. 2, the upper part 5a of the support material 5 is connected to the back cushion 4, and when the back cushion 4 is placed on the backrest 3 as shown in Fig. 3(c), it is pushed by the back cushion 4 and stands up on the backrest 3, supporting the back surface of the back cushion 4 (the back cushion 4 can be leaned against it), and when the back cushion 4 is lowered in front of the backrest 3 as shown in Fig. 3(a), it falls forward on the backrest 3 and does not separate from the back cushion 4. In this way, the support material 5 is linked to the operation of the back cushion 4, making it easy to operate.

［座の構成］
図１の座１は汎用のソファと同様に、木製、樹脂製等の剛性の座枠１０（図４、図５）を備えている。図４、図５の座枠１０には前後方向の奥行きが狭い後部座枠１０ａと、後部座枠１０ａよりも一段低く且つ後部座枠１０ａよりも前後方向の奥行きが広い前部座枠１０ｂがある。後部座枠１０ａ及び前部座枠１０ｂの外周に汎用のソファと同様にウレタン、その他のクッション材（図示せず）が配置され、その外周が皮革、本革、布等の表材（図示せず）で包まれている。また、前部座枠１０ｂの上には、ウレタン、その他のクッション材が表材で包まれたマット１１が配置されて、座１の座面２が前縁から後縁まで同じ高さ（同一面）になっている。 [Seat configuration]
The seat 1 in FIG. 1 is provided with a rigid seat frame 10 (FIGS. 4 and 5) made of wood, resin, or the like, in the same manner as a general-purpose sofa. The seat frame 10 in FIG. 4 and FIG. 5 includes a rear seat frame 10a having a narrow depth in the front-rear direction, and a front seat frame 10b which is one step lower than the rear seat frame 10a and has a wider depth in the front-rear direction than the rear seat frame 10a. The outer periphery of the rear seat frame 10a and the front seat frame 10b is covered with urethane or other cushioning material (not shown) in the same manner as a general-purpose sofa, and the outer periphery is covered with a surface material (not shown) such as leather, genuine leather, or cloth. In addition, a mat 11 made of urethane or other cushioning material covered with a surface material is placed on the front seat frame 10b, so that the seat surface 2 of the seat 1 is at the same height (same surface) from the front edge to the rear edge.

［背凭れの構成］
背凭れ３は、図３（ｃ）の後方位置から図３（ｄ）の前方位置まで移動できるようにするため、座枠１０の後部座枠１０ａの上に、図６の前後移動具１２を図４、図５のように取り付けてある。 [Backrest configuration]
In order to enable the backrest 3 to move from the rear position in FIG. 3(c) to the forward position in FIG. 3(d), a front-rear movement device 12 in FIG. 6 is attached to the rear seat frame 10a of the seat frame 10 as shown in FIGS.

［前後移動具の構成、取り付け］
前後移動具１２としては図６（ａ）～（ｃ）のようなものを使用することができる。図６（ａ）～（ｃ）の前後移動具１２は、後部座枠１０ａの上に固定する二つの固定ブラケット１３があり、それらの夫々に、可動ブラケット１４が、二枚のアーム１５ａ、１５ｂを介して取り付けられている。また、左右のアーム１５ａ、１５ｂをバー１６で連結することにより、左右の可動ブラケット１４が図６（ｂ）の矢印Ａ－Ｂ方向に同時に回動して前後移動（矢印Ａ方向に回動したときは前方移動、矢印Ｂ方向に回動したときは後方移動）するようにしてある。図６（ａ）は可動ブラケット１４が矢印Ａ方向に回動した状態（前傾状態）、図６（ｃ）は可動ブラケット１４が矢印Ｂ方向に回動した状態（後傾状態）である。夫々の固定ブラケット１３は図４、図５のように後部座枠１０ａの上にネジ等の固定具で固定されている。図４、図５のように、固定ブラケット１３、可動ブラケット１４、アーム１５ａ、１５ｂは外板１７ａと内板１７ｂ、覆い板２３を備えた支持枠２１で囲まれている。バー１６は内板１７ｂの下部の細長開口（切り欠き）１８（図４、図５）の内側に配置されて、可動ブラケット１４の矢印Ａ－Ｂ方向への回動に伴って、細長開口１８内を前後移動できるようにしてある（細長開口１８を設けることによりバー１６の前後移動が阻害されない。）。 [Configuration and installation of forward/backward moving tool]
The front-rear moving device 12 may be one shown in Fig. 6(a)-(c). The front-rear moving device 12 shown in Fig. 6(a)-(c) has two fixed brackets 13 fixed on the rear seat frame 10a, and a movable bracket 14 is attached to each of them via two arms 15a, 15b. The left and right arms 15a, 15b are connected by a bar 16, so that the left and right movable brackets 14 simultaneously rotate in the directions of arrows A-B in Fig. 6(b) to move forward and backward (moving forward when rotated in the direction of arrow A, and moving backward when rotated in the direction of arrow B). Fig. 6(a) shows the movable bracket 14 rotated in the direction of arrow A (forward tilting state), and Fig. 6(c) shows the movable bracket 14 rotated in the direction of arrow B (backward tilting state). Each fixed bracket 13 is fixed on the rear seat frame 10a with a fixing device such as a screw as shown in Figs. 4 and 5. 4 and 5, the fixed bracket 13, the movable bracket 14, and the arms 15a and 15b are surrounded by a support frame 21 that includes an outer plate 17a, an inner plate 17b, and a cover plate 23. The bar 16 is disposed inside an elongated opening (notch) 18 (FIGS. 4 and 5) at the bottom of the inner plate 17b, and is capable of moving back and forth within the elongated opening 18 as the movable bracket 14 rotates in the direction of the arrow A-B (the provision of the elongated opening 18 does not impede the back and forth movement of the bar 16).

前後移動具１２はその外周に配置したウレタン、その他のクッション材、その外周を被覆する表材で囲まれて図３（ａ）のように背凭れ３に内蔵されて、外から見えないようにしてある。前後移動具１２を背凭れ３に内蔵することにより、座面２に前後移動具１２の前後移動が阻害されないようにするための切り込みを入れる必要がなく、座面２に傷が付かず体裁が良く、座り心地も損なわれない。前後移動具１２はその作用、機能を発揮できれば前記以外の構造であってもよく、例えば、座１の上を前後に水平移動（水平スライド）するようなものであってもよい。前後移動具１２にアクチュエータ等の駆動機構を連動させて、電動で前後移動できるようにすることもできる。このようにすれば、背凭れ３が、前後移動具１２の前後移動に伴って自動的に前後移動する。 The front-rear moving device 12 is surrounded by urethane and other cushioning materials arranged on its periphery, and a surface material that covers the periphery, and is built into the backrest 3 as shown in Figure 3 (a) so that it cannot be seen from the outside. By building the front-rear moving device 12 into the backrest 3, there is no need to make a cut in the seat surface 2 to prevent the front-rear moving device 12 from being hindered, and the seat surface 2 is not scratched, looks good, and comfort is not impaired. The front-rear moving device 12 may have a structure other than the above as long as it can exert its action and function, and may, for example, be one that moves horizontally (slides horizontally) back and forth on the seat 1. The front-rear moving device 12 can also be linked to a driving mechanism such as an actuator so that it can be moved back and forth electrically. In this way, the backrest 3 moves automatically back and forth along with the front-rear moving device 12.

［受け材の構成］
受け材５は図３（ａ）の横向き状態から図３（ｃ）の起立状態まで起立、倒伏できるようにするため、開閉具２０（図４、図５、図７）を使用してある。開閉具２０は細長の下板２０ａと上板２０ｂを軸２０ｃで開閉可能に連結してあり、上板２０ｂが任意角度になると、それ以上は開かないようにしてある。図４、図５、図７では、開閉具２０の下板２０ａを後部座枠１０ａの上に取り付けた支持枠２１に固定し、開閉具２０の上板２０ｂを平板状の支持板２２に固定して、支持板２２が図４、図５の矢印Ａ－Ｂ方向に回動できるようにしてある。受け材５は開閉具２０、支持板２２の外周にウレタン、その他のクッション材を配置して表材で包んである。この場合、表材で包まれた開閉具２０の上板２０ｂが図３（ａ）～（ｃ）のように前後に開閉動作し易くなるように、表材の上板開閉箇所に切り込み１９（図７）を入れてある。開閉具２０はその作用、機能を発揮できれば、前記以外の構造であってもよい。 [Configuration of receiving material]
The opening and closing device 20 (FIGS. 4, 5, and 7) is used so that the support member 5 can be raised and lowered from the horizontal position shown in FIG. 3(a) to the upright position shown in FIG. 3(c). The opening and closing device 20 has an elongated lower plate 20a and an upper plate 20b connected by a shaft 20c so as to be openable and closable, and when the upper plate 20b reaches a desired angle, it cannot be opened any further. In FIG. 4, FIG. 5, and FIG. 7, the lower plate 20a of the opening and closing device 20 is fixed to a support frame 21 attached to the rear seat frame 10a, and the upper plate 20b of the opening and closing device 20 is fixed to a flat support plate 22 so that the support plate 22 can be rotated in the direction of the arrows A-B in FIG. 4 and FIG. 5. The support member 5 is made by disposing urethane or other cushioning materials on the outer periphery of the opening and closing device 20 and the support plate 22, and wrapping them with a surface material. In this case, a notch 19 (FIG. 7) is made in the opening and closing location of the upper plate of the cover material so that the upper plate 20b of the opening and closing device 20 wrapped in the cover material can be easily opened and closed back and forth as shown in FIGS. 3(a) to 3(c). The opening and closing device 20 may have a structure other than that described above as long as it can exert its action and function.

（実施形態２）
本発明では、図８のように、背クッション４を背凭れ３に連結具３０で連結して、背凭れ３の上に起立、倒伏可能とすることもできる。この場合も、背凭れ３は図１のように座１の座面２に前後移動できるように取り付けられている。連結具３０は背凭れ３及び背クッション４に内蔵されている。 (Embodiment 2)
In the present invention, as shown in Fig. 8, the back cushion 4 can be connected to the backrest 3 with a connector 30 so that the user can stand up and lie down on the backrest 3. In this case, the backrest 3 is also attached to the seat surface 2 of the seat 1 so that it can move forward and backward as shown in Fig. 1. The connector 30 is built into the backrest 3 and the back cushion 4.

背凭れ３と背クッション４の連結構造は任意とすることができる。図８（ａ）は背クッション４を背凭れ３の前に倒して、背クッション４を着座者の背中を支持する支持クッションとして使用できるようにしたものであり、図８（ｂ）は背クッション４を背凭れ３の上に起立させて、背クッション４をヘッドレストとして使用することができるようにしたものである。この場合、図８（ｂ）のように背クッション４の下部を背凭れ３の上部に立ち上げて、背クッション４をヘッドレストとして使用しても、連結具３０により、背クッション４が後方に倒れないようにしてある。図８（ｃ）は背凭れ３を座面２の前方に移動させた状態である。連結具３０はその作用、機能を発揮できれば任意の構造であってもよい。 The connecting structure between the backrest 3 and the back cushion 4 can be any structure. In Fig. 8(a), the back cushion 4 can be tilted forward of the backrest 3 so that it can be used as a support cushion to support the back of the seated person, and in Fig. 8(b), the back cushion 4 can be raised above the backrest 3 so that it can be used as a headrest. In this case, even if the lower part of the back cushion 4 is raised above the upper part of the backrest 3 as in Fig. 8(b) and the back cushion 4 is used as a headrest, the connecting device 30 prevents the back cushion 4 from falling backward. Fig. 8(c) shows the state in which the backrest 3 has been moved forward of the seat surface 2. The connecting device 30 can be of any structure as long as it can exert its effect and function.

（実施形態３）
本発明では、図９（ａ）のように、背クッション４を背凭れ３の前に倒して、背クッション４を支持クッションとして使用できるようにしたり、図９（ｂ）のように、背クッション４を背凭れ３の上に起立させて、背クッション４をヘッドレストとして使用したりできるようにすることもできる。この場合、背凭れ３と背クッション４の連結部内に連結具３０を内蔵して、背クッション４を背凭れ３の上方に起立させてヘッドレストとして使用したときに背クッション４が後方に倒れないようにしてある。背凭れ３は図１のように座面２の前方と後方に移動できるようにしてあり、図９（ｃ）は背凭れ３を座面２の前方に移動させた状態である。 (Embodiment 3)
In the present invention, as shown in Fig. 9(a), the back cushion 4 can be tilted in front of the backrest 3 so that it can be used as a support cushion, or as shown in Fig. 9(b), the back cushion 4 can be raised above the backrest 3 so that it can be used as a headrest. In this case, a connector 30 is built into the connection between the backrest 3 and the back cushion 4 so that the back cushion 4 does not fall backward when it is raised above the backrest 3 and used as a headrest. The backrest 3 can be moved forward and backward from the seat surface 2 as shown in Fig. 1, and Fig. 9(c) shows the state in which the backrest 3 is moved forward from the seat surface 2.

（実施形態４）
本発明では、図１０（ａ）のように、背凭れ３の上に背クッション４を連結することもできる。図１０では背クッション４を背凭れ３の前に倒して、背クッション４を支持クッションとして使用でき、図１０（ｂ）のように、背クッション４を背凭れ３の上に起立させて、背クッション４をヘッドレストとして使用することもできる。この場合も、背凭れ３と背クッション４の連結部内に連結具３０が内蔵されており、図１０（ａ）の倒伏状態、図１０（ｂ）の起立状態に維持し易くすることができる。図１０（ｃ）は背凭れ３を座面２の前方に移動させた状態である。 (Embodiment 4)
In the present invention, as shown in Fig. 10(a), the back cushion 4 can be connected to the top of the backrest 3. In Fig. 10, the back cushion 4 can be tilted in front of the backrest 3 to be used as a support cushion, and as shown in Fig. 10(b), the back cushion 4 can be erected on the backrest 3 to be used as a headrest. In this case, too, a connector 30 is built into the connection between the backrest 3 and the back cushion 4, making it easier to maintain the lying down state of Fig. 10(a) and the standing up state of Fig. 10(b). Fig. 10(c) shows the state in which the backrest 3 has been moved forward of the seat surface 2.

（実施形態５）
本発明のソファは図１１（ａ）（ｂ）のような二人掛け用のソファであってもよい。この場合も、背凭れ３と、その上に載せたり、前に降ろしたりすることができる背クッション４を設け、背凭れ３の上であり且つ背クッション４の背後に受け材５を設けてある。背クッション４と受け材５は図２、図１１（ｃ）のように、受け材５の上部５ａの全幅を背クッション４の背面に連結して、図３（ａ）から図３（ｃ）のように、背クッション４を背凭れ３の上に載せると受け材５が背クッション４で押されて立ち上がり、図３（ｃ）から図３（ａ）のように、背クッション４を背凭れ３の前に降ろすと受け材５が背クッション４により前方に引かれて背凭れ３の上に倒伏するようにする。 (Embodiment 5)
The sofa of the present invention may be a two-seater sofa as shown in Fig. 11(a) and (b). In this case, a backrest 3 and a back cushion 4 that can be placed on the backrest 3 or lowered in front of the backrest 3 are provided, and a support member 5 is provided on the backrest 3 and behind the back cushion 4. The back cushion 4 and the support member 5 are connected to the back of the back cushion 4 over the entire width of the upper portion 5a as shown in Fig. 2 and Fig. 11(c). When the back cushion 4 is placed on the backrest 3, the support member 5 is pushed by the back cushion 4 and stands up, as shown in Fig. 3(a) to Fig. 3(c), and when the back cushion 4 is lowered in front of the backrest 3 as shown in Fig. 3(c) to Fig. 3(a), the support member 5 is pulled forward by the back cushion 4 and falls down on the backrest 3.

（実施形態６）
本発明のソファは図１２（ａ）（ｂ）のような三人掛け用のソファであってもよい。この場合も、背凭れ３と、その上に載せたり、前に降ろしたりすることができる背クッション４を設け、背凭れ３の上であり且つ背クッション４の背後に受け材５を設ける。この場合も、背クッション４と受け材５は図２、図１１（ｃ）のように連結する。 (Embodiment 6)
The sofa of the present invention may be a three-seater sofa as shown in Figures 12(a) and 12(b). In this case, a backrest 3 and a back cushion 4 that can be placed on the backrest 3 or lowered forward are provided, and a support member 5 is provided on the backrest 3 and behind the back cushion 4. In this case, the back cushion 4 and the support member 5 are connected as shown in Figures 2 and 11(c).

（実施形態７）
実施形態１～６のいずれも、背凭れ３が座面２の前後方向に移動できる場合であるが、本発明では、背凭れ３が座面２の前後方向に移動しない固定式にすることもできる。この場合も、図１のように背凭れ３と、背クッション４と、受け材５を設け、図２のように受け材５を背クッション４の背面側に連結して、背クッション４を背凭れ３の上に載せると受け材５が背クッション４で押されて背凭れ３の上に立ち上がり、背クッション４を背凭れ３の前に降ろすと受け材５が背クッション４に引かれて背凭れ３の上に倒伏するようにすることもできる。 (Embodiment 7)
In all of the first to sixth embodiments, the backrest 3 can move in the front-rear direction of the seat 2, but in the present invention, the backrest 3 can be fixed so that it does not move in the front-rear direction of the seat 2. In this case, too, it is possible to provide the backrest 3, the back cushion 4, and the support material 5 as shown in Fig. 1, and connect the support material 5 to the rear side of the back cushion 4 as shown in Fig. 2, so that when the back cushion 4 is placed on the backrest 3, the support material 5 is pushed by the back cushion 4 to stand up on the backrest 3, and when the back cushion 4 is lowered in front of the backrest 3, the support material 5 is pulled by the back cushion 4 to collapse onto the backrest 3.

（実施形態８）
前記実施形態における前後移動具１２は回動式であるが、本発明における前後移動具は前後にスライド移動できる移動式とすることもできる。この場合も、前後移動具は外から見えないように背凭れに内蔵するのがよい。 (Embodiment 8)
The front-rear moving device 12 in the above embodiment is of a rotating type, but the front-rear moving device in the present invention may be of a moving type that can slide forward and backward. In this case, too, it is preferable that the front-rear moving device be built into the backrest so that it is not visible from the outside.

本発明のソファは袖があるものでも、ないものであってもよい。本発明のソファは座枠があってもなくてもよい。ソファや座枠の形状、構造、サイズ、前後移動具や開閉具の構造やその取付け構造、その他の部材の構造や形状等も、本発明の課題を解決可能な範囲で変更可能である。 The sofa of the present invention may or may not have sleeves. The sofa of the present invention may or may not have a seat frame. The shape, structure, size, forward/backward movement device and opening/closing device structure and attachment structure, and the structure and shape of other components may also be modified within the scope that allows the problem of the present invention to be solved.

１座
２座面（座の上面）
３背凭れ
４背クッション
４ａ（背クッションの）底面
４ｂ（背クッションの）前面
４ｃ（背クッションの）背面
５受け材
５ａ（受け材の）上部
５ｂ（受け材の）底面
１０座枠
１０ａ後部座枠
１０ｂ前部座枠
１１マット
１２前後移動具
１３固定ブラケット
１４可動ブラケット
１５ａ、１５ｂアーム
１６バー
１７ａ外板
１７ｂ内板
１８細長開口（切り欠き）
１９切り込み
２０開閉具
２０ａ下板
２０ｂ上板
２０ｃ軸
２１支持枠
２２支持板
２３覆い板
３０連結具 1 Seat 2 Seat surface (top of seat)
3 Backrest 4 Back cushion
4a (back cushion) bottom
4b (back cushion) front
4c (back cushion) back
5 Receiving material 5a (Upper part of receiving material)
5b (of the support) bottom surface
10 Seat frame 10a Rear seat frame 10b Front seat frame 11 Mat 12 Front-rear moving device 13 Fixed bracket 14 Movable bracket 15a, 15b Arm 16 Bar 17a Outer plate 17b Inner plate 18 Slender opening (cutout)
19 Slit 20 Opening and closing tool 20a Lower plate 20b Upper plate 20c Shaft 21 Support frame 22 Support plate 23 Cover plate 30 Connector

Claims

There is a backrest and a back cushion on the seat, and a support on the top of the backrest.
The backrest and support are separate from the back cushion.
The backrest is attached to the seat by a forward/backward moving device and is disposed on the seat surface, and can be moved back and forth on the seat surface in the forward/backward direction of the seat surface by the forward/backward moving device;
The back cushion can be used as a headrest by facing the front side forward, moving the back side upward along the front side of the seat rest, and placing the bottom side on the top side of the backrest, and by keeping the back side in that orientation and moving it downward along the front side of the backrest, lowering it from above the top side of the backrest to the front side of the backrest and placing the bottom side on the seat, it can be used as a support cushion that can support the back of a person sitting on the seat .
The upper end of the support material is connected to the back cushion and positioned on the back side of the back cushion, and the base side is connected to the backrest with an opening and closing device and placed on the upper surface of the backrest; when the bottom of the back cushion is placed on the upper surface of the backrest , the back cushion raises the back side of the back cushion above the upper surface of the backrest, allowing the back cushion to be supported from its rear side; when the back cushion is lowered in front of the backrest and the bottom of the back cushion is placed on the seat, the back cushion pulls the support material forward and collapses forward on the upper surface of the backrest so that it does not come off the back cushion.
The connected back cushion and support material are adapted to move forward and backward together with the backrest when the backrest moves forward and backward on the seat surface, even when their bottom surfaces are placed on the upper surface of the backrest, or when the back cushion is lowered onto the seat surface in front of the backrest and the support material is collapsed on the upper surface of the backrest.
A sofa characterized by:

The sofa according to claim 1,
When the receiving material is pushed by the back cushion and stands up on the backrest, the opening and closing device can support the receiving material without opening beyond a predetermined angle.
A sofa that features:

The sofa according to claim 1 or 2,
The opening and closing mechanism is built into the support and backrest.
A sofa characterized by:

The sofa according to claim 1 or 2,
When the support member is pushed by the back cushion and stands up on the backrest, and is supported by the opening and closing device so that it cannot be opened beyond a predetermined angle, the back cushion is supported by the raised support member and is prevented from falling backward any further.
A sofa that features:

The sofa according to claim 1 or 2,
A forward/backward moving device has a fixed part and a rotating part that can rotate back and forth in the forward/backward direction of the fixed part, the fixed part is attached to the seat, and the rotating part is built into the backrest so that it cannot be seen from the outside. When the backrest is rotated in the forward/backward direction of the seat, the rotating part rotates in the same direction, so that the backrest can be rotated in the forward/backward direction on the seat.
A sofa that features:

The sofa according to claim 1 or 2,
The backrest slides on the seat and can move back and forth in the front and back directions.
A sofa that features: