WO2022038805A1

WO2022038805A1 - Sofa

Info

Publication number: WO2022038805A1
Application number: PCT/JP2021/005863
Authority: WO
Inventors: 清一上原
Original assignee: 株式会社馬場家具
Priority date: 2020-08-19
Filing date: 2021-02-17
Publication date: 2022-02-24
Also published as: JP2022035908A; JP6844802B1

Abstract

This sofa is provided with a backrest and a seat which slides forwards and backwards. The seat is provided with a seat surface part and a protruding part which protrudes backwards from the seat surface part, and the backrest and the protruding part are linked by an elastic linking member. When the seat is in a pulled-back position, the protruding part is stored in a back inner space, which is formed inside of the backrest; when the seat slides forwards, the protruding part is pulled out of the back inner space. With this invention, by using the protruding part pulled out from the back inner space as part of the seat surface part, it is possible to increase the length of the seat in the depth direction without making the backrest thicker.

Description

sofa

The present invention relates to a sofa having a backrest and a seat, and more particularly to a sofa having a seat that slides back and forth.

Conventionally, those equipped with a backrest and a seat that slides back and forth are known (Patent Documents 1 to 3). By sliding the seat forward, this sofa can deepen the depth of the seat, and you can stretch your legs and relax.

In addition to the sofa as in Patent Document 1, a sofa called Chaise Longue, which has a long seat in the front-rear direction, is also known as a sofa where you can stretch your legs and relax (Patent Document 4). This sofa has a long seat back and forth, so you can stretch your legs and relax without having to slide the seat forward.

Japanese Unexamined Patent Publication No. 2002-238700 Japanese Unexamined Patent Publication No. 10-225337 Japanese Unexamined Patent Publication No. 2001-231658 Japanese Unexamined Patent Publication No. 2010-125197

The sofa of the type that slides the seat forward as in Patent Documents 1 to 3 has a structure in which the depth length of the seat is deepened by pulling out the portion that fits under the backrest, so that the thickness of the backrest is thick. It was not possible to deepen the depth of the seat.

A chaise longue type sofa having a long seat in the front-rear direction as in Patent Document 4 does not cause the problem as in Patent Document 1, but the seat can be leaned back like a slide type sofa. Since it cannot be stored underneath, it has the disadvantage of taking up space.

The present invention has been made in view of such circumstances, and the problem to be solved thereof is to provide a sofa that can have a deeper seat depth than the thickness of the backrest and can be made compact when not in use. There is something in it.

The sofa of the present invention is a sofa equipped with a backrest and a seat that slides back and forth. The seat has a seat surface portion and a protruding portion protruding rearward from the seat surface portion, and the backrest and the protruding portion are connected by a connecting material having elasticity. The protrusion fits in the dorsal interior space formed inside the backrest when the seat is in the rearwardly lowered position, and is pulled out from the dorsal interior space when the seat slides forward, and the protrusion is pulled out from the dorsal interior space. It is configured so that the portion can be used as a part of the seat surface portion.

The sofa of the present invention has a protruding portion that protrudes rearward from the seat surface portion, and the protruding portion can be pulled out and used as a part of the seating surface portion when in use, and the protruding portion is housed in the back internal space when not in use. Therefore, the depth of the seat can be made deeper or more compact than the thickness of the backrest.

(A) is an example of the sofa of the present invention, and (b) is a perspective view of a state in which the seat is lowered backward, and (b) is a perspective view of a state in which the seat is pulled out forward. An exploded explanatory view of the frame body of the sofa of the present invention. Detailed explanatory view of the guide rail and the rear roller part. A vertical cross-sectional view of the seat in a position where it is lowered backward. (A) is a cross-sectional explanatory view when the seat is in the rearmost position, (b) is a cross-sectional explanatory view in a state where the seat is slid forward by about half, and (c) is a cross-sectional explanatory view where the seat is slid to the frontmost position. Cross-sectional explanatory view of the state. (A) is a side view showing an example of the usage state of the sofa of the present invention, and (b) is a plan view showing an example of the usage state of the sofa of the present invention. (A) is an explanatory diagram showing an example of a seat frame when the seat can be manually slid, and (b) is an explanatory diagram showing an example of a seat moving along the seat frame of (a). (A) is an explanatory view showing another example when the seat can be manually slid, and (b) is a detailed explanatory view of the stopper of (a). (A) shows a state in which the seat of the sofa shown in FIG. 8 (a) is locked, (b) shows a state in which the handle is pulled, and (c) shows a state in which the seat is slid forward. What to show. (A) is an explanatory diagram showing another example when the seat can be manually slid, and (b) is an explanatory diagram showing the positional relationship between the guide rail and the roller.

(Embodiment)
An example of an embodiment of the sofa of the present invention will be described with reference to the drawings. As an example, the sofa shown in FIGS. 1 and 2 includes a frame body 10, a sliding means 20, a seat 30, a backrest 40, and a sleeve 50.

The frame body 10 includes a seat frame portion 11 that supports the seat 30, a lower frame portion 12 that supports the slide means 20, two vertical frame portions 13 that are erected on the lower frame portion 12, and a vertical frame portion. It includes a back frame portion 14 provided on the upper portion of 13, and a rear surface portion 15 provided on the back surface of the vertical frame portion 13 and the back frame portion 14.

The seat frame portion 11 of this embodiment includes a front plate 11a, side plates 11b provided rearward from both ends in the longitudinal direction of the front plate 11a, and a rear plate 11m (FIG. 4) connecting the rear end sides of both side plates 11b. A rear plate 11c is provided on the upper surface of the rear plate 11m between the side plates 11b. Between the left and right side plates 11b, a roller mounting member 11e for mounting the front roller 11d and a block mounting member 11f for mounting the drive block (slider) 23 of the slide means 20 are provided at intervals in the front-rear direction.

A so-called S spring (spring) 11g is erected between the left and right side plates 11b and between the roller mounting material 11e and the block mounting material 11f. Two front rollers 11d are attached to the roller attachment member 11e at intervals in the longitudinal direction, and a rear roller 11h is attached to the rear end side of each side plate 11b.

A support material (hereinafter referred to as "protruding portion support") 11i for supporting the protruding portion 32 of the seat 30 described later from below is provided on the rear end side of the left and right side plates 11b of the seat frame portion 11. The protrusion support 11i of this embodiment is a downward U-shaped member having a support portion on the upper end side of the two legs. The projecting portion support 11i is attached to a bracket 11j having a portion from the lower end of each leg portion projecting rearward at the rear portion of the seat frame portion 11.

The other end side of the spring 11k whose one end side is fixed to the inner surface of the side plate 11b is connected to the lower end side of each leg of the protrusion support 11i. The spring 11k is urged in a contracting direction so that the lower end side of each leg of the protrusion support 11i is pulled forward and the upper end side is tilted backward. The lower end side of each leg of the protrusion support 11i is supported by a stopper 16 provided on the rear plate 11m (FIG. 4) so that the upper end side of the protrusion support 11i does not tilt backward beyond a predetermined angle.

As shown in FIGS. 2 and 4, the stopper 16 of this embodiment is a side view-shaped plate in which a flat plate-shaped support surface 16b is continuous under the flat plate-shaped mounting surface 16a. The stopper 16 has a mounting surface 16a attached to the rear portion of the seat frame portion 11 so that the support surface 16b projects forward. The lower end side of each leg of the protrusion support 11i comes into contact with the back surface side of the support surface 16b, so that the support side of the protrusion support 11i is supported so as not to tilt further backward.

In this embodiment, the protrusion support 11i supported by the stopper 16 is tilted backward by about 20 degrees. When the seat 30 is located at the rearmost position, the protrusion support 11i abuts on the rear surface portion 15 and fits in a state of standing upright behind the seat 30 (between the seat 30 and the rear surface portion 15). On the other hand, when the seat 30 moves forward, the protrusion support 11i tilts backward away from the rear surface portion 15 and stops when both legs abut on the support surface 16b. The protrusion 32 is supported from below by the protrusion support 11i stopped at the backward tilted position.

In this embodiment, when the seat 30 slides to the frontmost position, the gap generated between the seat 30 and the backrest 40 is covered by the protrusion 32 pulled out from the back internal space 14d. By doing so, it is possible to prevent an accident such as an infant's limbs being caught between the seat 30 and the backrest 40.

The lower frame portion 12 is a member that constitutes a part of the seat 30. The lower frame portion 12 of this embodiment is provided in parallel with the base front member 12a and the base rear member 12b provided in parallel at intervals in the front-rear direction, and between the base front member 12a and the base rear member 12b. The base middle member 12c is provided with guide rails 12d provided on both ends in the longitudinal direction of the base front member 12a, the base middle member 12c, and the base rear member 12b.

As shown in FIG. 3, both guide rails 12d are the parts where the rear roller 11h travels. Both guide rails 12d are provided with a downward L-shaped rail cover 12e so that the rear roller 11h can be accommodated between the guide rail 12d and the rail cover 12e.

Mounting flanges 12f used for connecting to the sleeve 50 and other sofas are erected at both ends of the base front member 12a in the longitudinal direction. A mounting seat 12g for mounting a motor pedestal 15a for holding a motor is provided at the center of the base rear member 12b and the base middle member 12c in the longitudinal direction, and the motor pedestal 15a is attached to the mounting seat 12g by welding. The base front member 12a and the base rear member 12b are steel pipes, and adjusters 12h are provided on the back surfaces of both ends in the longitudinal direction.

The vertical frame portion 13 is a vertically rectangular plate material having a rectangular punched hole 13a inside. A lower connecting portion 13b connecting to the guide rail 12d is provided on the lower end side of the vertical frame portion 13, and an upper connecting portion 13c connecting to the back frame portion 14 is provided on the upper end side. A rear surface portion mounting portion 13d is projected inward on the rear end side of the vertical frame portion 13. A flat plate-shaped rear surface portion 15 (cover veneer plate) elongated in the width direction of the sofa is attached to the rear surface portion mounting portion 13d. A motor mount 15a is fixed to the front surface side of the rear surface portion 15 in order to increase the strength of the rear surface portion 15.

The vertical frame portion 13 is provided with one frame for each of the left and right guide rails 12d. A pipe material 13e is erected between the two vertical frame portions 13. The pipe material 13e is rotatably supported by a shaft pin 13f projecting from the inner surface of each vertical frame portion 13.

The back frame portion 14 is a member that constitutes a part of the backrest 40. The back frame portion 14 of this embodiment has a back frame side plate 14a arranged to face each other at intervals in the width direction of the sofa, and a front end erection plate 14b erected on the front end side of both back frame side plates 14a. It is equipped with. The back frame side plate 14a is a flat plate material in which an inclined surface is continuously provided on the front side of the flat surface. On the flat surface of both back frame side plates 14a, an elongated back frame upper surface plate 14c is provided in the width direction of the sofa. Inside the front end erection plate 14b and both back frame side plates 14a, a back interior space 14d capable of accommodating a curled protrusion 32 is formed. A movable frame 14f is provided on the upper surface of the back frame upper surface plate 14c via a hinge metal fitting 14e.

The sliding means 20 is a member for sliding the seat 30 in the front-rear direction. In this embodiment, an existing electric actuator including a motor 21, a linear guide 22, and a slider 23 is used as the slide means 20. As the slide means 20, a device other than the electric actuator may be used. As shown in FIG. 2, the motor 21 is attached to the motor mount 15a, and the slider 23 is attached to the block mounting member 11f. A power cord or a controller (not shown) is connected to the actuator so that the slider 23 can be moved or stopped by the controller.

The seat 30 is a portion on which the user sits, and the lower frame portion 12 is covered with a cushion material and a covering material. Genuine leather, synthetic leather, cloth, etc. can be used as the covering material, and existing urethane, etc. can be used as the cushioning material.

As shown in FIG. 4, the seat 30 of this embodiment includes a flat seat surface portion 31 on which the user sits and a protruding portion 32 protruding rearward from the seat surface portion 31. A connecting member 33 having elasticity is attached to the end of the protrusion 32. As the connecting material 33, for example, a functional cloth such as a swimsuit material having elasticity can be used. The connecting member 33 passes above the pipe member 13e of the back frame portion 14, and its tip portion is fixed to the front end erection plate 14b of the back frame portion 14.

The protrusion 32 is flexible, and when the seat 30 is in the rearwardly lowered position, it fits in the back internal space 14d below the backrest 40 in a curled state, and when the seat 30 slides forward, the back It is pulled out from the internal space 14d and gradually becomes flat. The protruding portion 32 drawn out from the back internal space 14d can be used as a part of the seat surface portion 31.

The backrest 40 is a portion where the user leans against the head from the back, and the back frame portion 14 is covered with a cushioning material and a covering material. Genuine leather, synthetic leather, cloth, etc. can be used as the covering material, and existing urethane, etc. can be used as the cushioning material.

The backrest 40 of this embodiment is provided with a movable backrest (hereinafter referred to as "movable backrest") 42 on the upper surface side of the fixed backrest (hereinafter referred to as "fixed backrest") 41. The movable backrest 42 is raised from a position in which it has fallen backward (hereinafter referred to as "downturned position") to a position substantially perpendicular to the fixed backrest 41 (hereinafter referred to as "upright position"), and the movable backrest 42 is raised from the upright position to the downturned position. I am trying to beat it.

The sleeve 50 is a so-called arm rest on which the user rests his arm. As the sleeve 50, one provided with a cushioning material or a covering material on the outside of the frame can be used. Existing urethane or the like can be used as the cushion material, and genuine leather, synthetic leather, cloth material or the like can be used as the covering material. The sleeve 50 can be made removable. The sleeve 50 may be provided as needed, and may be omitted if it is not needed.

In this embodiment, the case where the sofa is a two-seat sofa is taken as an example, but the sofa of the present invention may be a sofa other than the two-seat sofa, such as a one-seat sofa or a three-seat sofa. In the case of a sofa for a plurality of people, all the seats 30 may be slidable, but only some of them may be slidable.

Also, in the case of a sofa for multiple people, it is possible to prepare multiple sofas for one person equipped with a joining means and combine them so that they can be assembled into a sofa for multiple people. In this case, the transportation cost can be reduced by separating the sofas into units for one person during transportation. Sofas for multiple people can also be configured as an inseparable unit.

(Other embodiments)
In the above embodiment, the case where the seat 30 is slid by an electric actuator is taken as an example, but the seat 30 may be configured to be slid manually. As a structure that can be manually slid, for example, there are structures as shown in FIGS. 7 (a) and 7 (b) to 10 (a) and 10 (b). In the following, the parts different from the above-described embodiment will be mainly described, and the description of the matters common to the above-described embodiment will be omitted as appropriate.

The sofa shown in FIGS. 7 (a) and 7 (b) is a two-seat sofa. As shown in FIG. 7A, the lower frame portion 12 shows only the front frame 12i, the rear frame 12j, and two base outer members 12k (in FIG. 7A, only the front base outer member 12k is shown. Is equipped with). Two fitting rails 61 are provided between the front frame 12i and the rear frame 12j at intervals in the width direction, and a receiving member 62 having a fitting recess 62a is provided inside both fitting rails 61. It is provided at intervals.

As shown in FIG. 7 (b), a horizontally long mounting seat 64 is provided on the front side of the bottom surface of the seat 30, and two moving casters 65 are spaced apart from the mounting seat 64 (FIG. 7 (b). ), Only the caster 65 on the front side is shown). On the rear side of the mounting seat 64, groove rails 63 having a fitting groove 63a to be fitted to the fitting rail 61 are arranged in two rows at equal intervals from the fitting rail 61 (in FIG. 7B, the groove rail on the front side). (Only 63 is shown). The fitting rail 61 and the groove rail 63 function as a guide mechanism for preventing the seat 30 from being displaced in the left-right direction.

A fitting pin 66 to be fitted into the fitting recess 62a is provided inside the two groove rails 63 on the bottom surface side of the seat 30. In this embodiment, three protrusions (only two on the front side are shown in FIG. 7B) are provided at intervals in the front-rear direction. The number of fitting pins 66 may be one, two, or four or more. The fitting recess 62a and the fitting pin 66 function as a stop mechanism for the seat 30.

In the sofa shown in FIGS. 7A and 7B, the seat 30 can be smoothly pulled out by the caster 65, and the lateral shake of the seat 30 is regulated by the action of the mating rail 61 and the groove rail 63 that are fitted to each other. Rail.

Further, in the sofa shown in FIGS. 7A and 7B, the fitting pin 66 on the bottom surface of the seat 30 pulled forward (sliding) is fitted into the fitting recess 62a so that the seat 30 stops at that position. It is set to. When it is desired to further pull out the seat 30, the front side of the seat 30 may be lifted, the fitting pin 66 may be removed from the fitting recess 62a, and the seat 30 may be moved forward. When it is desired to return the seat 30 slid forward to the rear, the front side of the seat 30 may be slightly lifted to remove the fitting pin 66 from the fitting recess 62a and then pushed backward.

In the example shown in FIGS. 7A and 7B, the case where the fitting rail 61 is provided on the lower frame portion 12 side and the groove rail 63 is provided on the seat 30 side is taken as an example, but the fitting rail 61 is provided on the seat 30 side. , The groove rail 63 can also be provided on the lower frame portion 12 side.

In the example shown in FIGS. 7 (a) and 7 (b), one stop mechanism having a fitting recess 62a and a fitting pin 66 is provided as an example, but this stop mechanism has an interval in the width direction of the seat 30. It is possible to open two or more.

As a structure that can be manually slid, a structure as shown in FIGS. 8 (a) and 8 (b) can also be adopted. In the sofa shown in FIGS. 8A and 8B, a male rail 71 is provided on the lower frame portion 12 side, and a female rail 72 fitted to the male rail 71 is provided on the bottom surface on the seat 30 side. The male rail 71 is provided at a position on both outer sides of the lower frame portion 12 in the width direction, and the female rail 72 is provided at a position on both outer sides in the width direction of the seat 30. The male rails 71 are provided at equal intervals to the female rails 72.

A mounting base 73 is provided on the front portion of the bottom surface of the seat 30, and a caster 74 that rotates in the front-rear direction is provided on the mounting base 73. Covers 75 are attached to the front surface and both side surfaces of the mounting base 73 so that the upper part of the caster 74 is hidden.

In the sofa shown in FIGS. 8A and 8B, the seat 30 can be smoothly pulled out by the caster 74, and the lateral shake of the seat 30 is regulated by the action of the male rail 71 and the female rail 72 that are fitted to each other. Can be done. In this embodiment, the case where the male rail 71 is provided on the lower frame portion 12 side and the female rail 72 is provided on the seat 30 side is taken as an example, but the male rail 71 is provided on the seat 30 side and the female rail 72 is provided on the lower frame portion. It can also be provided on the 12 side.

The lower frame portion 12 and the seat frame portion 11 may be provided with a stopper 76 that locks and stops the seat 30 at a desired position and releases the lock so that the seat 30 can slide. The stopper 76 shown in FIGS. 8A and 8B includes a bracket 76a, a shaft 76b, a spring 76c, a handle 76d, an operation arm 76e, a relay plate 76f, an adjusting shaft 76g, a connecting plate 76h, and the like. It is provided with a push plate 76i, a support plate 76j, a support shaft 76k, and a return spring 76m.

As shown in FIGS. 8A and 8B, the bracket 76a is fixed to the fixing plate 11n of the seat frame portion 11, and the shaft 76b is in front of the base of the lower frame portion 12 in a state of penetrating the facing plate of the bracket 76a. It is arranged and fixed between the member 12a and the base rear member 12b. The spring 76c is wound around the outer circumference of the shaft 76b between the facing plates of the bracket 76a. The spring 76c is wound so as to be closely fixed to the outer peripheral surface of the shaft 76b so as to lock the shaft 76b.

In the spring 76c of this embodiment, one end (fixed end) is fixed to the bracket 76a, and the other end (free end) is laterally projected to the outside of the bracket 76a. When the free end is pushed upward, the winding of the spring 76c is loosened, the spring 76c is separated from the outer peripheral surface of the shaft 76b, and the spring 76c is unlocked. When the push-up on the free end side is released, the winding of the spring 76c is returned, and the spring 76c is brought into close contact with the outer peripheral surface of the shaft 76b so that the shaft 76b is locked.

The push plate 76i is rotatably attached to a support plate 76j projecting downward from the fixing plate 11n of the seat frame portion 11 by a support shaft 76k. A vertically long connecting plate 76h is welded to the push plate 76i and raised upward.

The rear end of the operation arm 76e is locked to one end of the relay plate 76f, and the front end is connected to the handle 76d attached to the front end of the seat frame portion 11. The other end of the adjust shaft 76g, one end of which is locked to the connecting plate 76h, is nut-fastened to the other end of the relay plate 76f. By rotating the nut to change its position, the pulling allowance of the operating arm 76e can be finely adjusted. The handle 76d has a plate shape, and the upper portion thereof is attached to a bracket fixed to the inside of the frame body 10 so that the lower end side can be rotated in the front-rear direction (arrows AB in FIG. 9A). There is.

As shown in FIGS. 9A to 9C, when the handle 76d is pulled forward, the operation arm 76e connected to the handle 76d is pulled forward, whereby the upper end of the connecting plate 76h is pulled forward. The portion is pulled forward and the push plate 76i rotates (tilts forward) toward the front side with the support shaft 76k as the axis. When the free end of the spring 76c is pushed upward by the forward tilt of the push plate 76i, the winding of the spring 76c is loosened, the lock of the shaft 76b by the spring 76c is released, and the seat 30 can be slid.

On the other hand, when the operation of the handle 76d pulled forward is released, the operation arm 76e is pulled back by the return spring 76m, whereby the upper end portion of the connecting plate 76h returns to the rear, and the push plate 76i rearward with the support shaft 76k as the axis. It rotates to return to the position before the operation. When the push plate 76i returns, the push-up of the free end of the spring 76c by the push plate 76i is released, the winding of the spring 76c returns, the spring 76c comes into close contact with the outer peripheral surface of the shaft 76b, the shaft 76b is locked, and the seat 30 Stops.

As a structure that can be manually slid, a structure as shown in FIGS. 10 (a) and 10 (b) can also be adopted. In the sofa shown in FIGS. 10A and 10B, two guide rails 81 are provided on the lower frame portion 12 side, and a roller 82 that moves on the guide rail 81 is provided on the seat 30 side. A plurality of recessed fitting portions 81a (three in the illustrated example) are provided on the upper surface of each guide rail 81 at intervals. The seat 30 is provided with two side-viewing laterally U-shaped arms 83, and a caster 84 is provided at the lower tip of each arm 83.

In the sofa shown in FIGS. 10A and 10B, the seat 30 can be smoothly pulled out by the caster 84 that touches the ground and the roller 82 that moves on the guide rail 81. When the seat 30 is slid forward, the roller 82 moves on the upper surface of the guide rail 81 and stops when it is fitted to the fitting portion 81a closest to the moving direction. When the seat 30 is further slid forward, it escapes from the fitting portion 81a, moves the upper surface of the guide rail 81 further forward, and stops when it is fitted to the next fitting portion 81a. This operation can be performed by holding the tip end side of the seat 30 by hand and pulling it forward, or by moving the waist back and forth while sitting on the seat 30. If you want to return the pulled out seat 30 to the rear, you may move in the opposite direction.

The configuration of each of the above embodiments is an example, and the configuration adopted in each embodiment can be appropriately adopted as the configuration of another embodiment. Further, the configurations of each embodiment are not all essential configurations, and unnecessary configurations can be omitted as appropriate. The present invention is not limited to the structure and shape of the embodiment, and various modifications and changes can be made without departing from the gist thereof.

(motion)
The operation of the sofa of the present invention will be described with reference to the drawings.
(1) FIG. 5A shows a state in which the seat 30 is lowered to the end. In this state, the protruding portion 32 of the seat 30 is pulled upward by the connecting member 33, and is housed in the back internal space 14d in a rolled state.
(2) FIG. 5 (b) shows a state in which the seat 30 is slid forward by about half from the state of FIG. 5 (a). In this state, the protruding portion 32 in a curled state is pulled out as the seat 30 slides forward. At this time, as the seat 30 slides forward, the protrusion support 11i housed on the back side of the seat 30 tilts backward to a predetermined position.
(3) FIG. 5 (c) shows a state in which the seat 30 is further slid forward from the state of FIG. 5 (b) and slid to the frontmost position. In this state, the protruding portion 32 is completely pulled out, and the flat seat surface portion 31 and the protruding portion 32 become flat. At this time, the protrusion 32 is supported by the head of the protrusion support 11i waiting at a predetermined position.

As described above, in the sofa of this embodiment, the seat 30 is slid forward to a position where the protruding portion 32 becomes flat with the seat surface portion 31 as shown in FIG. 5 (c), whereby FIGS. 6 (a) and 6 (b). It can be a seat with a depth length that can be placed up to the heel. Further, by sliding the seat to the end as shown in FIG. 5A, the seat surface can be made compact.

The sofa of the present invention can be widely used as a sofa for one person or a sofa for multiple people.

10 Frame 11 Seat frame 11a Front plate

11b Side plate

11c Rear plate 11d Front roller 11e Roller mounting material 11f Block mounting material 11g S spring (spring)
11h Rear roller 11i Support material (protruding part support)
11j Bracket 11k Spring 11m Rear plate 11n Fixing plate 12 Lower frame part 12a Base front member 12b Base rear member 12c Base middle member

12d Guide rail

12e Rail cover

12f Mounting flange

12g Mounting seat 12h Adjuster 12i Front frame 12j Rear frame 12k Base outer member 13 Vertical frame part 13a Drilling hole 13b Lower connecting part 13c Upper connecting part 13d Rear surface mounting part

13e Pipe material

13f Shaft pin 14 Back frame part 14a Back frame side plate 14b Front end erection plate 14c Back frame top plate 14d Back internal space 14e Hinging metal fittings 14f Movable frame 15 Rear surface 15a Motor mount 16 Stopper

16a Mounting surface

16b Support surface 20 Sliding means 21 Motor 22 Linear guide 23 Drive block (slider)
30 Seat 31 Seat surface 32 Protruding part 33 Connecting material 40 Back leaning 41 Back leaning (fixed back leaning)
42 Back leaning (movable back leaning)
50 Sleeve 61 Fitting rail 62 Receiving material 62a Fitting recess 63 Groove rail 63a Fitting groove 64 Mounting seat 65 Caster 66 Fitting pin 71 Male rail 72 Female rail 73 Mounting base 74 Caster 75 Cover 76 Stopper 76a Bracket 76b Shaft 76c Spring 76d Handle

76e Operation arm

76f Relay plate 76g Adjust shaft

76h Connecting plate

76i Push plate 76j Support plate

76k Support shaft

76m Return spring 81 Guide rail 81a Fitting part 82 Roller 83 Arm 84 Caster

Claims

On a sofa with a backrest and a seat that slides back and forth
The seat comprises a seat and a protrusion protruding rearward from the seat.
The backrest and the protrusion are connected by a connecting material having elasticity, and the backrest and the protrusion are connected to each other.
The protrusion fits into the dorsal interior space formed inside the backrest when the seat is in the rearwardly lowered position, and is pulled out of the dorsal interior space when the seat slides forward.
The protrusion drawn out from the dorsal interior space can be used as a part of the seat surface portion.
A sofa that features that.
In the sofa according to claim 1,
The protrusion fits in a curled state in the dorsal interior space below the backrest when the seat is in the rearwardly lowered position.
A sofa that features that.
In the sofa according to claim 1 or 2.
The protrusions drawn from the interior space of the back cover the gap between the backrest and the seat.
A sofa that features that.
In the sofa according to any one of claims 1 to 3.
The seat is supported by a seat frame that can slide back and forth,
The seat frame is provided with a support material for supporting the pulled out protrusion from below.
A sofa that features that.
In the sofa according to claim 4,
When the seat is in the rearwardly lowered position, the support material is stored in an upright position behind the seat.
When the seat slides forward, the support material tilts backward to a predetermined position.
The protrusion is supported by the backward tilted support material.
A sofa that features that.