JP2021186495A - Foldable bed - Google Patents

Abstract

To provide a foldable bed having good use feeling, and capable of stabilizing a placement state in a folded state.SOLUTION: A foldable bed 1 becomes a first folded state S2 due to that each floor part 2 and each link bar part 5 are synchronized and turned in a direction of having an upright posture in linkage with raising operation of both first legs 3, and on the other hand, becomes a usage state S1 of allowing a user to lie down due to that the floor part 2 and the link bar part 5 are synchronized and turned in a direction of having a lodging posture in linkage with lowering operation of both first legs 3. The first legs 3 are provided with a pair of turning inhibition means 10 for inhibiting further turning of the floor part 2 so that angles α1, α2 made by a direction of directing from one end to the other end of the floor part 2, and a longitudinal direction of the first legs 3 when viewed in a first turning shaft center C1 upon operation of raising the first legs 3 each become an acute angle.SELECTED DRAWING: Figure 4

Description

The present invention relates to a foldable bed that can be folded when not in use.

Conventionally, a foldable bed that can be folded to change its shape when not in use has been generally known for the purpose of effectively using the installation space. For example, the foldable bed disclosed in Patent Document 1 has a pair of vertically extending first legs arranged facing each other at predetermined intervals in the bed width direction, and a bed at each end in the bed longitudinal direction. It is provided with a pair of two sets of second legs that extend vertically and are arranged facing each other at predetermined intervals in the width direction, and is provided between both first legs and one set of both second legs, and both second legs. A rectangular floor surface portion is disposed between the one leg portion and both the second leg portions of the other set. One end of each floor surface portion is rotatably pivotally supported on the upper portions of both first legs, while the other end is rotatably pivotally supported on the upper portions of both second legs of each set. Further, a pair of two sets of link rod portions having a shape extending in parallel with the side edge portion of the floor surface portion are provided below both sides in the bed width direction of each floor surface portion, and one end of each link rod portion is provided with each first. The other end of each link rod portion is rotatably supported by the lower portion of each second leg portion in each set, while the other end of each link rod portion is rotatably supported by the lower portion of one leg portion. Then, in conjunction with the ascending operation of both first legs, each floor surface portion and each link rod portion rotate in synchronization with the direction in which the standing posture is established, and the two second legs of one set and the other set rotate in synchronization with each other. While both second legs are in contact with the floor and are in a folded state, each floor surface and each link rod are in a prone position in conjunction with the lowering operation of both first legs. It rotates synchronously, and both second legs of one set and both second legs of the other set are separated from each other in a state of being in contact with the floor, and both first legs are used in contact with the floor. It is configured so that the person can lie down and use it.

Japanese Unexamined Patent Publication No. 2009-160200

By the way, in the foldable bed of Patent Document 1, when the user applies a downward force to the first leg portion in order to deform the foldable bed from the folded state to the used state, both first leg portions are placed on one floor surface portion. On the other hand, there are rare cases where a force in an unintended direction such as rotation to the approaching side is generated. At this time, when both the first leg portions rotate until there is no gap between one floor surface portion and both link rod portions of one set, the user moves with respect to the first leg portion as shown in FIG. Even if a downward force is applied, both first legs are integrated with one floor surface and both link rods of one set and separated from the other floor surface and both link rods of the other set. Since the movement tends to rotate to the side and no further deformation is possible while the product is being transformed from the folded state to the used state, the user lifts the first leg to fold it. After returning to the state once, it is necessary to apply a downward force to the first leg again to deform it from the folded state to the used state, which causes a problem that it takes time and effort and the usability deteriorates. ..

Further, since the foldable bed of Patent Document 1 is in an upright posture in the folded state, there is a possibility that the foldable bed may fall down in the folded state if a force is suddenly applied. There was also a demand for further stability.

The present invention has been made in view of such a point, and an object of the present invention is to provide a foldable bed which is comfortable to use and can stabilize the mounted state in the folded state. be.

In order to achieve the above object, the present invention always provides a side in which each floor surface portion is separated from the first leg portion when the user applies a downward force to the first leg portion in the folded bed. It is characterized by devising a way to rotate it.

Specifically, a pair of vertically extending first legs arranged facing each other at a predetermined distance in the bed width direction and facing each other at each end in the longitudinal direction of the bed at a predetermined distance in the bed width direction. A pair of two pairs of second legs extending vertically and arranged side by side in the longitudinal direction of the bed, one end of which is rotatable between the two first legs and above the first legs. A pair of rectangular floor surface portions whose other ends are rotatably supported between the two second legs of each set and above the two second legs. And, each end of each floor has a shape extending in parallel with the side edge of the floor at the lower sides in the width direction of the bed, and one end of each is rotatably supported by the lower part of each of the first legs. Each other end is provided with a pair of two sets of link rods rotatably supported at the lower part of each of the second legs of each set, and each of the above is interlocked with the ascending operation of both first legs. With the floor surface and each of the link rods rotating in synchronization with the standing posture, the two second legs of one set and the second legs of the other set are in contact with the floor. While they are close to each other and are in a folded state, the floor surface portion and the link rod portion are rotated in synchronization with the lowering operation of both the first leg portions in the direction of the lying down posture, and the one of the above is one of the above. Both the second legs of the set and the second legs of the other set are separated from each other in a state of being in contact with the floor, and the first legs of the pair are in contact with the floor so that the user can lie down. In the foldable bed configured to be, the following solutions were taken.

That is, in the first invention, at least one of the two first leg portions is from one end to the other end of each floor surface portion when viewed in the direction of the rotation axis when the two first leg portions are lifted. It is characterized in that a pair of rotation preventing means for preventing further rotation of each floor surface portion is provided so that the angle formed by the direction toward the head and the longitudinal direction of the first leg portion is an acute angle. ..

In the second invention, in the first invention, the rotation preventing means has a mounting hole formed through the first leg portion and a shaft portion that can be inserted into the mounting hole so that the tip side protrudes. It is configured to be composed of a pin, and is configured to prevent the rotation of the floor surface portion by bringing the floor surface portion into contact with the shaft portion of the attachment / detachment pin inserted through the mounting hole.

In the third invention, in the first or second invention, a U-shaped lock member that can be externally fitted to the two link rod portions that approach each other in an upright posture by the raising operation of both first leg portions is provided. It is characterized by having.

In the first invention, when the bed is folded, each floor surface portion extends diagonally downward to the side away from the first leg portion with respect to the first leg portion in a posture extending up and down by the rotation preventing means. Then, when the user applies a downward force to the first leg when the bed is deformed from the folded state to the used state, the first leg is applied to each floor surface portion and each link rod portion by the applied force. A force in the direction away from the portion is always generated, and the floor surface portion and each link rod portion always rotate in the direction away from the first leg portion. Therefore, when the bed is deformed from the folded state to the used state, it cannot be further deformed in the middle of the process, and it is possible to prevent rework such as re-deforming, and it is possible to make the foldable bed comfortable to use. can. In addition, when the bed is folded, each floor surface portion and each link rod portion are in a posture of extending diagonally downward toward the side away from the first leg portion by the rotation preventing means, so that both second sets of one set supporting the bed are used. The distance between the leg and both second legs of the other pair is increased. Therefore, as compared with the foldable bed of Patent Document 1, the placed state of the bed in the folded state can be further stabilized.

In the second invention, when the attachment / detachment pin is attached to the mounting hole, the first leg in a posture in which the shaft portion of the attachment / detachment pin prevents the rotation of the floor surface portion and extends up and down when the user raises the first leg portion. The floor surface portion extends diagonally downward to the side away from the first leg with respect to the portion, while when the attachment / detachment pin is removed from the mounting hole and the bed is folded, both rotating floor surface portions extend vertically. Therefore, the bed can be made into a compact shape in the side-by-side direction of both floor surfaces. In this way, for example, when using the bed repeatedly, the attachment / detachment pin is attached to the mounting hole to make the bed comfortable to use, and when the bed is stored in a storage room, the attachment / detachment pin is removed to make it compact. You can make a foldable bed that is easy to use, such as folding it into a simple shape and storing it.

In the third invention, even if a downward force is suddenly applied to the first leg portion in the folded state of the bed and both link rod portions try to rotate to the side separated from each other, both link rods are locked members. The bed can be used safely by preventing the bed from being unintentionally deformed from the folded state to the used state.

It is a perspective view of the use state of the foldable bed which concerns on embodiment of this invention. It is a front view of the use state of the foldable bed which concerns on embodiment of this invention. It is a front view which shows the state in the process of deforming the foldable bed which concerns on embodiment of this invention. It is a front view of the 1st folded state of the foldable bed which concerns on embodiment of this invention. It is sectional drawing in the VV line of FIG. It is a front view of the 2nd folded state of the foldable bed which concerns on embodiment of this invention. It is a front view which shows one example of the state in the process of transforming a foldable bed from a 1st fold state to a use state. It is a perspective view of the detachable pin attached to the foldable bed which concerns on embodiment of this invention. It is a perspective view of the lock member used in the foldable bed which concerns on embodiment of this invention. It is a front view which shows one example of the state in the process of transforming a conventional foldable bed from a folded state to a used state.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.

FIG. 1 shows a wooden foldable bed 1 according to an embodiment of the present invention. The foldable bed 1 can be transformed into a use state S1 in which the user can lie down and a fold state S2 and S3 (see FIGS. 4 and 6) that enable effective use of the installation space. A pair of floor surface portions 2 arranged side by side in the longitudinal direction and forming a rectangular shape in a plan view, a pair of first leg portions 3 arranged to face each other at a predetermined interval in the bed width direction in the center of the longitudinal direction of the bed, and a bed. A pair of second leg portions 4 arranged opposite to each other at each end in the longitudinal direction at predetermined intervals in the bed width direction, and the side of the floor surface portion 2 below both sides of each floor surface portion 2 in the bed width direction. It is provided with a pair of two sets of link rod portions 5 in the shape of a plate rod extending in parallel with the edge portion.

The floor surface portion 2 includes a pair of first strips 2a extending in the longitudinal direction of the bed on both sides in the width direction of the bed, one ends of both first strips 2a, and the other ends of both first strips 2a. A rectangular frame-shaped portion 2c composed of a pair of second strip portions 2b that are bridged to each other, and both second strip portions 2b that are arranged inside the rectangular frame-shaped portion 2c and extend in the longitudinal direction of the bed. It is provided with a plurality of support plate portions 2d to be bridged.

A plurality of strip-shaped slatted board portions 2e extending in the bed width direction are arranged side by side in the rectangular frame-shaped portion 2c with a predetermined gap in the bed longitudinal direction, and each slatted board portion 2e supports each. It is supported by the plate portion 2d.

A headboard 2f having an L-shaped cross section is attached to the first strip portion 2a located at one end in the longitudinal direction of the bed in the rectangular frame-shaped portion 2c.

Each of the first leg portions 3 has a substantially rectangular plate shape extending vertically, and mounting holes 3a penetrating in the plate thickness direction are provided at predetermined intervals in the longitudinal direction of the bed at the upper position in the center of the vertical direction. Is formed in pairs.

As shown in FIG. 8, the attachment / detachment pin 6 including the shaft portion 6a and the head portion 6b continuous with the shaft portion 6a is attached to each of the attachment holes 3a.

As shown in FIG. 5, the shaft portion 6a of the attachment / detachment pin 6 can be inserted into the mounting hole 3a, and when the shaft portion 6a is inserted into the mounting hole 3a, the tip end side protrudes from the mounting hole 3a.

Further, as shown in FIG. 1, above both mounting holes 3a on the outer surface of each first leg portion 3, a substantially elliptical shape extending in the longitudinal direction of the bed in front view and a shallow bottom opening outward are formed. A concave handle portion 3b is formed so that the user can operate each first leg portion 3 by hooking a finger on the handle portion 3b.

One end side of each floor surface portion 2 is located between the upper portions of both first leg portions 3, and both first leg portions 3 have a first rotation axis extending one end of each floor surface portion 2 in the bed width direction. It is rotatably supported around the center C1.

Each of the second leg portions 4 has a substantially rectangular plate shape extending vertically, and a protruding portion 4a projecting downward is provided on the side of the first leg portion 3 at the lower end.

Further, in the region other than the protruding portion 4a at the lower end of each second leg portion 4, a rotatable caster 4b is attached around the axis of rotation extending vertically, and the lower end of the caster 4b and the protruding end of the protruding portion 4a are It is in almost the same position.

The other end side of each floor surface portion 2 is located between the upper portions of both second leg portions 4 of each set, and both second leg portions 4 of each set have a bed width at the other end of each floor surface portion 2. It is rotatably supported around the second rotation axis C2 extending in the direction.

One end of each link rod portion 5 is rotatably supported around the third rotation axis C3 at the lower part of each first leg portion 3, while the other end of each is a second leg portion of each set. A shaft is rotatably supported around the fourth rotation axis C4 at the lower part of the fourth rotation axis.

In the foldable bed 1, in the usage state S1, when each attachment / detachment pin 6 is attached to each attachment hole 3a and the user grips and raises the first leg portion 3, both are as shown in FIGS. 2 to 4. In conjunction with the ascending operation of the first leg portion 3, each floor surface portion 2 and each link rod portion 5 rotate in synchronization with the direction in which the standing posture is established, and both the second leg portions 4 of one set and the other set Both second leg portions 4 are in contact with the floor F and approach each other. The attachment / detachment pin 6 and the attachment hole 3a constitute the rotation preventing means 10 of the present invention, and the shaft of each attachment / detachment pin 6 to be inserted into each attachment hole 3a when both first leg portions 3 are raised. Each floor surface portion 2 comes into contact with the portion 6a, and the rotation of each floor surface portion 2 is prevented at a predetermined position. That is, as shown in FIG. 4, the rotation preventing means 10 has a direction from one end to the other end of each floor surface portion 2 and a longitudinal direction of the first leg portion 3 when viewed in the direction of the first rotation axis C1. The foldable bed 1 is configured to be in the first folded state S2 by preventing further rotation of each floor surface portion 2 so that the angles α1 and α2 formed are at acute angles. The angle α1 and the angle α2 have substantially the same angle.

Further, in the foldable bed 1, in the use state S1, when the user grips and raises the first leg portion 3 with the detachable pins 6 removed from the mounting holes 3a, as shown in FIG. 6, the foldable bed 1 is raised. In conjunction with the ascending operation of both first leg portions 3, each floor surface portion 2 and each link rod portion 5 rotate in synchronization with the direction in which the standing posture is established, and both floor surface portions 2 and each link rod portion 5 are vertically rotated. It is adapted to be transformed into the second folded state S3, which is an extended posture.

On the other hand, when the user grips and lowers the first leg 3 in the first folded state S2, the foldable bed 1 lowers both the first legs 3 as shown in FIGS. 2 and 4. In conjunction with the operation, each floor surface portion 2 and each link rod portion 5 rotate in synchronization with each other in the direction of lying down, and both the second leg portions 4 of one set and the second leg portions 4 of the other set. The first leg 3 is in contact with the floor F and is separated from each other in a state of being in contact with the floor F, so that the user can lie down in the used state S1.

As shown in FIG. 9, the foldable bed 1 includes a lock member 7 having a substantially U-shape in a plan view.

The lock member 7 has a strip-shaped base portion 7a extending in the horizontal direction and a pair of strip-shaped base portions extending in parallel with each other from each end portion in the longitudinal direction of the base portion 7a to one side in the plate thickness direction of the base portion 7a. It is composed of a portion 7b, and both side portions 7b have a cross-sectional C-shape so as to gradually separate from each other as they go downward.

Then, as shown in FIG. 4, the lock member 7 can be externally fitted to the two link rod portions 5 that approach each other in an upright posture by the raising operation of both first leg portions 3.

Next, the operation of transforming the foldable bed 1 according to the embodiment of the present invention from the used state S1 to the first folded state S2 will be described in detail.

First, the user attaches the attachment / detachment pin 6 to each attachment hole 3a of the first leg portion 3.

Next, as shown in FIG. 2, the user puts a finger on the handle portion 3b of the first leg portion 3 to grip the first leg portion 3 and raises the first leg portion 3 (direction of arrow X1). ). Then, as shown in FIG. 3, each floor surface portion 2 and each link rod portion 5 rotate in synchronization with the ascending operation of both first leg portions 3 in the direction of the upright posture, and one of the sets Both second leg portions 4 and both second leg portions 4 of the other set approach each other in a state of being in contact with the floor F.

The user further raises the first leg 3. Then, as shown in FIG. 4, each floor surface portion 2 comes into contact with the shaft portion 6a of each attachment / detachment pin 6 inserted into each mounting hole 3a, and the rotation of each floor surface portion 2 is prevented at a predetermined position. That is, in the foldable bed 1, the angles α1 and α2 formed by the direction from one end to the other end of each floor surface portion 2 and the longitudinal direction of the first leg portion 3 when viewed in the direction of the first rotation axis C1 are acute angles, respectively. The first folded state S2 is set.

Then, the user externally fits the lock member 7 to the two linked rod portions 5 that are brought close to each other. Specifically, the user brings the open side of the lock member 7 close to the two close link rod portions 5, and inserts the two link rod portions 5 approaching the inside of the lock member 7.

In this way, when the foldable bed 1 is folded, the rotation preventing means 10 causes each floor surface portion 2 and each link rod portion 5 to extend diagonally downward toward the side away from the first leg portion 3, so that the foldable bed 1 can be folded. The distance between both second legs 4 of one set supporting the bed 1 and both second legs 4 of the other set is increased. Therefore, compared to the foldable bed of Patent Document 1, the placed state of the foldable bed 1 in the folded state can be further stabilized.

Further, even if a downward force is unexpectedly applied to the first leg portion 3 in the folded state of the foldable bed 1 and the both link rod portions 5 try to rotate to the side separated from each other, the both link rod portions 5 Contact the lock member 7, so that the foldable bed 1 can be safely used by preventing the foldable bed 1 from being unintentionally deformed from the first folded state S2 to the used state S1.

When the foldable bed 1 is set to the second folded state S3, the detachable pins 6 are removed from the mounting holes 3a of the first leg portion 3. Then, as shown in FIG. 6, since the rotating floor surface portions 2 are in a vertically extending posture, the foldable bed 1 can be made into a compact shape in the parallel arrangement direction of the floor surface portions 2.

Next, the operation of transforming the foldable bed 1 according to the embodiment of the present invention from the first folded state S2 to the used state S1 will be described in detail.

First, as shown in FIG. 4, the user removes the lock member 7 that is externally fitted to the two approaching link rod portions 5.

Next, the user puts a finger on the handle portion 3b of the first leg portion 3 and lowers both the first leg portions 3 (in the direction of arrow X2). Then, as shown in FIGS. 2 and 3, each floor surface portion 2 and each link rod portion 5 rotate in synchronization with the lowering operation of both first leg portions 3 in the direction of the lying down posture, while the floor surface portion 2 and the link rod portions 5 rotate in synchronization with each other. The second leg 4 of the set and the second leg 4 of the other set are separated from each other in a state of being in contact with the floor F, and the first leg 3 is in contact with the floor F and the user lies down. It becomes the possible use state S1.

When the user applies a downward force to the first leg 3 in order to transform the foldable bed 1 from the first folded state S2 to the used state S1, for example, both first legs 3 are on one side. In rare cases, an unintended force such as rotation toward the floor surface portion 2 is generated. Even in this case, in the foldable bed 1 according to the embodiment of the present invention, as shown in FIG. 7, when the user applies a downward force F1 to the first leg portion 3, the applied force is applied. F1 always generates a force F2 on each floor surface portion 2 and each link rod portion 5 in a direction away from the first leg portion 3, and the floor surface portion 2 and each link rod portion 5 are accompanied by the first leg. It always rotates in a direction away from the portion 3. Therefore, when the foldable bed 1 is deformed from the first folded state S2 to the used state S1, it cannot be further deformed in the middle of the transformation, and it is possible to prevent rework such as re-doing the transforming operation. It can be a good foldable bed 1.

Further, in the foldable bed 1 according to the embodiment of the present invention, when the attachment / detachment pin 6 is attached to each attachment hole 3a of the first leg portion 3, the attachment / detachment pin 6 is attached when the user raises the first leg portion 3. The shaft portion 6a is in a posture of blocking the rotation of the floor surface portion 2 and extending vertically with respect to the first leg portion 3, while the floor surface portion 2 is in a posture of extending diagonally downward toward the side away from the first leg portion 3. When the detachable pin 6 is removed from the mounting hole 3a and the foldable bed 1 is brought into the second folded state S3, both rotating floor surface portions 2 are in a vertically extending posture, so that the foldable bed 1 is placed on both floor surface portions 2. It can be made into a compact shape in the parallel installation direction. Therefore, for example, when the foldable bed 1 is repeatedly used, the removable pin 6 is attached to the mounting hole 3a to make the foldable bed 1 comfortable to use, and the foldable bed 1 is stored in a storage room or the like. The foldable bed 1 can be easily used by removing the detachable pin 6 and folding it into a compact shape for storage.

In the embodiment of the present invention, when the user raises the first leg portion 3, the floor surface portion 2 is oblique to the side away from the first leg portion 3 with respect to the first leg portion 3 in a vertically extending posture. The shaft portion 6a of the detachable pin 6 is used as a means for preventing the rotation of the floor surface portion 2 so as to extend downward, but the present invention is not limited to this, and for example, a protrusion is provided on the back surface of the first leg portion 3. Alternatively, other structures may be used to prevent the floor surface portion 2 from rotating.

Further, in the embodiment of the present invention, a mounting hole 3a is formed in one of the first leg portions 3, and the attachment / detachment pin 6 can be attached to the mounting hole 3a, but the other first leg portion 3 is equipped with the attachment / detachment pin 6. Also, the attachment / detachment pin 6 may be attached by forming the attachment hole 3a.

The present invention is suitable for a foldable bed that can be folded when not in use.

1 Folding bed 2 Floor surface 3 1st leg 3a Mounting hole 4 2nd leg 5 Link rod 6 Detachable pin 6a Shaft 7 Lock member 10 Rotation blocking means S1 Usage state S2 1st folding state

Claims (3)

A pair of vertically extending first legs arranged facing each other at a predetermined interval in the bed width direction,
A pair of two pairs of second legs extending vertically and facing each other at each end in the longitudinal direction of the bed at predetermined intervals in the width direction of the bed.
They are arranged side by side in the longitudinal direction of the bed, one end of which is rotatably supported between the two first legs and the upper part of the first legs, while the other end of each set is rotatably supported. A pair of rectangular floor surface portions that are rotatably supported between the two legs and above both second legs.
Each floor has a shape that extends parallel to the side edges of the floor at the lower sides of each floor in the bed width direction, and one end of each is rotatably supported by the lower part of each of the first legs, while each other. It is provided with a pair of link rod portions whose ends are rotatably supported at the lower part of each of the second legs of each set.
In conjunction with the ascending operation of both the first legs, the floor surface and the link rods rotate in synchronization with each other in the upright posture, and the two second legs and the other of the one set are rotated. While the two second legs of the set are in contact with the floor and are in a folded state, the floor and the link rods are laid down in conjunction with the lowering operation of the first legs. The two second legs of one set and the second legs of the other set are separated from each other in a state of being in contact with the floor, and the first legs are separated from each other. Is a foldable bed configured so that the user can lie down in contact with the floor.
On at least one of the two first leg portions, when the two first leg portions are lifted, the direction from one end to the other end of each floor surface portion when viewed in the direction of the axis of rotation and the first leg portion. A foldable bed characterized in that a pair of rotation preventing means for preventing further rotation of each of the floor surface portions is provided so that the angle formed with the longitudinal direction of the bed is an acute angle. In the foldable bed according to claim 1.
The rotation preventing means is composed of a mounting hole formed through the first leg portion and a detachable pin having a shaft portion that can be inserted into the mounting hole so that the tip side protrudes, and is inserted into the mounting hole. A foldable bed characterized in that the floor surface portion is brought into contact with the shaft portion of the detachable pin to prevent the floor surface portion from rotating. In the foldable bed according to claim 1 or 2.
A foldable bed characterized by being provided with a U-shaped lock member that can be externally fitted to the two link rod portions that approach each other in an upright posture by the raising operation of both first leg portions.

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