JP2010017479A - Sofa convertible into bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sofa convertible into a bed which has simple configuration and sufficiently secures width as a bed when used as the bed. <P>SOLUTION: The sofa 1 convertible into the bed includes: a chair body 2 having a seat 22; a backrest 3 supported by the chair body 2; and a backrest support mechanism 4 for selectively holding the backrest 3 at least at a normal usage position C where the backrest is raised upward from the rear part of the seat 22 or a bed usage position B where a lower surface 3a is substantially flush with the seat surface 22a of the seat 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bed-use sofa that includes a chair main body having a seat and a backrest supported by the chair main body, and can be used as a bed by moving the backrest.

Conventionally, various sofas that can be used as a bed in a hospital or the like are usually used as a sofa, and can be used as a bed in an emergency. As the configuration of such a bed-and-sofa, there is a conventional one in which the backrest is movable between a normal use position that stands up behind the seat and a bed use position that substantially overlaps the seat (for example, , See Patent Documents 1 and 2). Moreover, the backrest can be moved between a normal use position standing up behind the seat and a bed use position where the backrest surface is substantially flush with the seat surface (for example, Patent Documents). 3).
JP 2005-204795 A JP 2006-326040 A JP 2004-160015 A

  However, in the configuration described in Patent Documents 1 and 2, since the backrest and the seat are substantially overlapped at the bed use position and the back surface of the backrest is used, the width of the bed is the depth of the seating surface. The problem is that the width is substantially the same and the width is narrower than that of a normal bed. On the other hand, in the configuration described in Patent Document 3, when used as a bed, a sufficient width as the bed can be secured, but a separate stopper is provided to support the backrest with the backrest surface substantially flush with the seating surface. It is necessary to provide members and legs. That is, with this configuration, there is a problem that unnecessary parts need to be prepared when used as a normal sofa.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, that is, to provide a bed and sofa that can secure a sufficient width as a bed when used as a bed with a simple configuration.

  In order to solve the above-described problems, the bed / sofa according to the present invention includes a chair body having a seat, a backrest supported by the chair body, and a normal use in which the backrest is raised up behind the seat. A backrest supporting mechanism that can be selectively held at at least one of a position and a bed use position whose upper surface or lower surface is substantially flush with the seating surface of the seat.

  In such a case, when the backrest is moved to the bed use position while being supported by the chair body via the backrest support mechanism, the upper surface or the lower surface of the backrest is substantially flush with the seat surface of the seat. Therefore, a configuration in which the backrest can be used as a part of the upper surface of the bed can be realized without providing a special member that supports the backrest.

  In order to solve the above problems, in order to use the upper surface or the lower surface of the backrest as a part of the bed with a simpler configuration, the backrest support mechanism has a rotation shaft at the end in the width direction of the chair body. And an arm that supports the end in the width direction of the backrest, and the backrest can be moved between the normal use position and the bed use position by the rotational movement of the arm. It is desirable to have In such a case, it is possible to move to a position adjacent to the seat surface while reversing the lower surface of the backrest by using only the rotational motion and making it face upward.

  Further, if the seat surface of the seat is raised above the other part in the part above the rotational axis, the rotational axis can be stored in this part.

  On the other hand, if a backrest leg portion that is grounded at the bed use position is provided on the upper surface or the bottom surface of the backrest, a special part for supporting the backrest when using the bed is not separately prepared. The backrest can be used as a bed simply by moving the backrest to the bed use position.

  Further, a plurality of the backrest legs are provided on the upper surface or the bottom surface of the backrest so as to be spaced apart in the width direction, and a recess that is separated from the installation surface at the bed use position is provided at a site between the backrest legs. If it is provided, this recess does not directly contact the grounding surface, so that it is possible to suppress the occurrence of a problem that this portion touches the floor surface and becomes dirty.

  According to the configuration of the bed and sofa of the present invention, the backrest can be disposed at the bed use position where the upper surface or the lower surface is substantially flush with the seat surface of the seat due to the backrest holding function. Without using a large member, the backrest is moved to the bed use position when used as a bed, and the upper or lower surface of the backrest is substantially flush with the seating surface of the seat, so that the width dimension as a bed is increased. The structure which can be taken large is realizable.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The bed / sofa 1 according to the present embodiment is mainly installed in a waiting room of a hospital. As shown in an overall perspective view in FIG. 1, a side view in FIG. 2, and a front view in FIG. A chair body 2 having a leg body 21 provided and a seat 22 supported by the leg body 21 from below; a backrest 3 supported by the chair body 2; and the backrest 3 A backrest support mechanism 4 that can be selectively held at either a normal use position C that stands up rearward and a bed use position B whose upper surface 3b or lower surface 3a is substantially flush with the seat surface 22a of the seat 22; It comprises.

  The seat 22 has left and right ends supported on the legs 21. Moreover, in this embodiment, the raised part 221 which raised the seating surface 22a upward is provided in both right-and-left both ends. The thickness dimension of the raised portion 221 is gradually increased toward the left and right ends of the seat 22.

  On the other hand, the backrest 3 has a lower surface 3a formed in a planar shape, and is provided with protrusions 31 protruding upward at the left and right ends of the upper end, and a portion between these protrusions 31 is formed as a recess 3x. Yes.

  Further, the backrest support mechanism 4 includes a pair of left and right arms 41 that are supported on the widthwise end of the chair body 2 via a rotation shaft 42 and support one end in the widthwise direction of the backrest 3. Have. This arm 41 is a substantially L-shaped plate-like member, and one end thereof is connected to the chair body 2, more specifically, the seat 22 via a rotating shaft 42, and the other Is fixed to the backrest 3.

  Thus, in the present embodiment, as described above, the backrest support mechanism 4 can selectively hold the backrest 3 in the normal use position C and the bed use position B. More specifically, the backrest 3 is configured to be movable between the normal use position C and the bed use position B by rotating the arm 41.

  More specifically, in the normal use position C, the backrest 3 is held upright from the rear end portion of the seat 22 with the lower surface 3a applied to the rear end portion of the seat surface 22a. In this state, the seat 22 mainly receives the load of the backrest 3 and the arm 41. Further, in the present embodiment, the normal use position C of the arm 41 and the backrest 3 between the backrest support mechanism 4 and the chair body 2, specifically between the arm 41 and the seat 22. There is provided a movement restricting portion 5 for restricting movement from the. The movement restricting portion 5 is formed using, for example, paired surface fasteners 5 a and 5 b provided on one arm 41 and one side surface of the seat 22.

  On the other hand, in the bed use position B, the backrest 3 is arranged in a state where it is turned upside down in front of the seat 22, that is, with the lower surface 3a facing upward, and the lower surface 3a of the backrest 3 is substantially flush with the seat surface 22a. In addition, the protrusion 31 formed on the upper surface 3b of the backrest 3 is held in contact with the floor surface. That is, the projection 31 functions as a backrest leg in the claims. In this state, the weight of the backrest 3 is mainly received by the floor body. Here, in the bed use position B, the portion between the protrusions 31 on the upper surface 3b of the backrest 3, that is, the recess 3x is separated from the installation surface, that is, the floor surface.

  Then, the state in which the bed / sofa 1 is used as a sofa, that is, the state in which the backrest 3 is disposed at the normal use position C is changed to the state in which the backrest 3 is disposed at the bed use position B. The following operations are performed. First, the state in which the movement of the backrest is restricted by the movement restricting portion 5, specifically, the state in which the surface fastener 5a on the arm 41 side is fastened to the surface fastener 5b on the seat 22 side is released. That is, the surface fastener 5a on the arm 41 side is peeled off from the surface fastener 5b on the seat 22 side. Next, the backrest 3 is pulled forward and upward, and the backrest 3 and the arm 41 are rotated until the protrusion 31 formed on the upper surface 3b of the backrest 3 comes into contact with the ground. Here, when the protrusion 31 formed on the upper surface 3b of the backrest 3 is grounded, the lower surface 3a of the backrest 3 faces upward and is substantially flush with the seating surface 22a. Further, in this state, the raised portions 221 formed at the left and right ends of the seat surface 22a are located in the center in the depth direction, that is, in the center in the width direction in the usage mode as a bed. The arm-side surface fastener 5a is housed in a state where it is suspended along the inner side surface of the arm (not shown) when the backrest 3 is disposed at the bed use position B.

  On the other hand, in order to switch from the state in which this bed / sofa 1 is used as a bed to the state in which it is used as a sofa, the reverse operation is performed. That is, the backrest 3 is first lifted upward, and then the backrest 3 and the arm 41 are rotated toward the normal use position C where the lower surface 3a of the backrest 3 contacts the seat surface 22a. When the backrest reaches the normal use position C, the surface fastener 5a on the arm 41 side is fastened to the surface fastener 5b on the seat 22 side, and the normal use position C of the backrest 3 by the movement restricting portion 5 is secured. Restrict movement from

  As described above, when the configuration of the bed / sofa 1 according to the present embodiment is adopted, the backrest 3 is supported by the chair body 2 via the backrest support mechanism 4 and the backrest 3 is moved to the bed use position. A configuration in which the lower surface 3a of the backrest 3 is substantially flush with the seating surface 22a of the seat 22 when moved to B, and the backrest 3 is supported only when the backrest 3 is moved to the bed use position B. This can be realized with a simple configuration without using a large-scale member. That is, the backrest 3 can be used as a part of the upper surface of the bed, and in this state, the member for supporting the backrest 3 can be minimized.

  The backrest support mechanism 4 includes an arm 41 that is supported on the widthwise end portion of the chair body 2 via a rotation shaft 42 and supports the widthwise end portion of the backrest 3. Since the backrest 3 can be moved between the normal use position C and the bed use position B by the rotational movement of 41, the lower surface 3a of the backrest 3 is inverted by the rotational movement alone so as to face upward. It can move to a position adjacent to the seating surface 22a. Therefore, the lower surface 3a of the backrest 3 can be used as a part of the bed with a simpler configuration.

  Further, a raised portion 221 having a seating surface 22a protruding upward is provided at a portion above the rotating shaft 42, that is, at both left and right ends of the seat 22, and the rotating shaft 42 is accommodated in this portion. The shaft 42 can be stably supported by the seat 22. In addition, in this embodiment, when the backrest 3 is set as the bed usage position B, the raised portion 221 is positioned at a central portion in the depth direction, that is, a central portion in the width direction in the usage mode as a bed. Therefore, it is possible to use the raised portion 221 as a pillow.

  On the other hand, the upper surface 3b of the backrest 3 is provided with a protrusion 31 that is grounded at the bed use position B, so that it is possible to prepare the support without using a special part for supporting the backrest 3 when using the bed. By simply moving the backrest 3 to the bed use position B, the protrusion 31 can support the weight of the backrest 3 and use it as a bed.

  A plurality of protrusions 31 are provided on the upper surface of the backrest 3 so as to be spaced apart from each other in the width direction, and a recess 3x that is separated from the floor surface at the bed use position B is provided between the protrusions 31. Therefore, the recess 3x does not directly contact the floor surface, and it is possible to suppress the occurrence of a problem that this portion touches the floor surface and becomes dirty.

  In addition, in the present embodiment, the movement restricting portion 5 for restricting the movement of the arm 41 and the backrest 3 from the normal use position C is provided between the arm 41 and the seat 22. When used as a sofa, it can be prevented that the backrest 3 is inadvertently moved due to mischief or the like and is unintentionally used as a bed. Further, since the movement restricting portion 5 is formed by using the pair of surface fasteners 5a and 5b provided on one arm 41 and one side surface of the seat 22, such movement can be achieved with a simple configuration. The restriction part 5 can be realized.

  The present invention is not limited to the embodiment described above.

  For example, the upper surface of the backrest is substantially flat, and the backrest and the chair body are located between the normal use position where the backrest is located above the seat and the bed use position located below the seat. There may be provided a back support mechanism that can be slid between them and can selectively hold the back in either the normal use position or the bed use position. In this aspect, the backrest support mechanism includes a slider provided on the backrest side, a rail provided on the chair body side and slidably supporting the slider, and a backrest in the normal use position and the bed use position. And a stopper for restricting the movement of the slider to be selectively held. The backrest may be grounded when the backrest is placed at the bed use position. In this case, the stopper restricts the movement of the slider so as to hold the backrest at the normal use position. It may have only the function to do.

  In addition, the backrest itself having a substantially flat bottom surface is supported by the chair body so that the backrest can rotate 180 degrees around the rotation axis, and the normal use position is located above the seat with the bottom surface of the backrest facing downward, And a back support mechanism capable of selectively holding the back in one of the bed use positions where the lower surface is substantially flush with the seat surface while the lower surface of the back is facing upward and the upper surface of the back is grounded. It may be provided. In this aspect, the backrest support mechanism includes a rotation shaft provided on the backrest side, a bearing provided on the chair body side for supporting the rotation shaft and capable of sliding in the vertical direction, and capable of sliding the bearing. And a stopper for restricting the movement of the bearing so as to selectively hold the backrest at the normal use position or the bed use position. Here, as the stopper, in the normal use position located behind the seat in a state where the lower surface of the backrest faces downward, the function of regulating the sliding movement of the bearing so as to hold the backrest in the normal use position, In addition, in a bed use position where the lower surface of the backrest faces upward and is substantially flush with the seating surface, a configuration having a function of regulating the sliding movement of the bearing so as to hold the backrest in the bed use position is considered. It is done. In this embodiment, the backrest may be grounded when the backrest is disposed at the bed use position. In this case, the stopper is configured so that the lower surface of the backrest faces downward. The normal use position located in the rear upper part may have only a function of restricting the sliding movement of the bearing so as to keep the backrest in the normal use position.

  In the above-described embodiment, instead of raising the left and right ends of the seating surface, an elbow rest member is provided between the seat and the arm of the backrest support mechanism, and the backrest is supported by the elbow rest member to support the backrest. Of course, it is possible to provide a rotating shaft of the support mechanism.

  Further, instead of providing a backrest leg portion on the backrest, the entire upper surface or lower surface of the backrest may be grounded, and a protrusion that always protrudes upward from the upper surface of the backrest or always protrudes downward from the lower surface. Instead of using the protrusions to form the backrest legs, a separate backrest leg that can be stored inside the backrest or folded behind the backrest when used as a sofa It may be provided.

  In addition, it is not always necessary to provide the movement restricting portion in the above-described embodiment, and other modes than those described in the above-described embodiment, for example, an aspect in which the arm can be fixed to the seat with screws, A mode of restricting the movement of the backrest by engaging the elastic claw provided on the other side and the concave part provided on the other side and capable of engaging with the elastic claw may be employed. Of course, not only between the arm and the seat of the backrest support mechanism, but also, for example, a mode in which a movement restricting portion is provided between the backrest and the seat, for example, a mode in which the backrest is fastened to the seat with a hook-and-loop fastener or a backrest is screwed to the seat You may employ | adopt the aspect which makes it possible to stop.

  In addition, various changes may be made without departing from the spirit of the present invention.

The perspective view of the bed combined sofa which concerns on one Embodiment of this invention. The side view of the sofa for bed which concerns on the embodiment. The front view of the sofa for bed which concerns on the embodiment. The perspective view which shows the usage condition as a bed of the bed combined sofa which concerns on the same embodiment. The side view which shows the usage condition as a bed of the bed combined sofa which concerns on the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bed combined sofa 2 ... Chair body 22 ... Seat 22a ... Seat surface 3 ... Backrest 3a ... Backrest 4 ... Backrest support mechanism C ... Normal use position B ... Bed use position

Claims (5)

  A chair body having a seat, a backrest supported by the chair body, a normal use position where the backrest stands up behind the seat, and an upper surface or a lower surface is substantially flush with the seat surface of the seat. A bed-use sofa comprising a backrest support mechanism that can be selectively held at least at one of the bed use positions.   The backrest support mechanism includes an arm that is supported by a widthwise end portion of the chair body via a rotation shaft and supports the widthwise end portion of the backrest. The bed-combined sofa according to claim 1, further comprising a configuration in which drooping is movable between the normal use position and the bed use position.   3. The bed-and-sofa according to claim 2, wherein the seat surface of the seat is raised above the other part at a part above the rotation axis.   The bed-use sofa according to claim 1, 2 or 3, wherein a backrest leg portion for grounding at the bed use position is provided on an upper surface or a bottom surface of the backrest.   A plurality of backrest legs are provided on the top or bottom surface of the backrest so as to be spaced apart from each other in the width direction, and a recess is provided at a position between the backrest legs at a position where the bed is used. The bed-use sofa according to claim 4.

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