JP2014223133A - Fold-down bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fold-down bed having a central part less prone to be uplifted even when external force is applied to the bed.SOLUTION: The fold-down bed includes: a plurality of mats being movably foldable between a use state position and a nonuse state position; hinge parts for connecting the plurality of mats; leg parts; and energizing members. The fold-down bed further includes pivotable auxiliary legs outside the leg parts and at longitudinal ends of the mats in the longitudinal direction of the mats.

Description

The present invention relates to a folding bed, and more particularly to a folding bed that saves space when folded.

2. Description of the Related Art Conventionally, there are many known folding beds that can be folded when not in use and are composed of a pair of mat portions, a hinge portion connecting the pair of mat portions, and a leg portion. (For example, see Patent Document 1 below). Since such a folding bed can be changed from a horizontally developed state to an inverted V-shaped folded state when not in use, space can be used effectively.

Moreover, since the conventional folding bed has a heavy feeling, the caster is provided in a leg, and the shape change operation at the time of non-use and use is made easy, and the movement of the bed indoors is made easy.

In addition, a device has been devised in which a spring is disposed on the bottom side of the folding bed to assist the user's operational feeling required for changing the form when the bed is not used and when the bed is used.

Utility model registration No. 3049433

However, in such a folding bed, when an external force is applied to the outer side (foot side or head side) than the leg mounting position, the vicinity of the hinge portion at the center of the bed is in the direction of arrow U. There was a case of rising. (Figure 3)

The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a folding bed in which the central portion hardly rises even when an external force is applied.

  In order to solve the above-mentioned problems, in the folding bed according to claim 1 of the present invention, a plurality of mat portions and a plurality of mat portions that can be folded so as to be movable between a use state position and a non-use state position. In a folding bed comprising a hinge portion, a leg portion, and an urging member for connecting the two, an auxiliary leg that can be operated is provided at an end portion in the longitudinal direction of the mat portion.

Furthermore, in the folding bed according to claim 2, the auxiliary leg is provided outside the leg part in the longitudinal direction of the mat part.

In the folding bed according to the third aspect, the auxiliary leg can be rotated in the longitudinal direction or the lateral direction of the mat portion.

In the folding bed according to the fourth aspect, the auxiliary leg is detachable.

According to the folding bed of the present invention, it is possible to provide a folding bed in which the central portion hardly rises even when an external force is applied.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view (use state) of the folding bed according to the present embodiment, and FIG. 2 is a side view of the folding bed according to the present embodiment. FIG. 3 is a view for explaining a conventional folding bed, and FIG. 4 is a view of the end portion in the longitudinal direction of the mat portion of the folding bed according to the present embodiment. FIG. 5 is a diagram of the folding state when the folding bed is not used. FIG. 6 is a partially broken sectional view of the mat portion of the folding bed according to the present embodiment, and FIG. 7 is a partially broken sectional view of the mat portion of the conventional folding bed.

The folding bed is composed of a pair of an upper mat portion 11, a lower mat portion 12, a leg portion 2, a hinge portion 3 that connects the mat portions, and a biasing member 4 that can be folded when not in use. When not in use, this folding bed can be changed from a horizontally developed state (FIGS. 1 and 2) to an inverted V-shaped folded state (FIG. 5).

In the present embodiment, an example using two mat portions will be described. However, as long as the bed configuration can be changed from a horizontally expanded state to a folded state, as conventionally known, The number of mats may be three or four.

The mat portion is composed of two mats 11 and 12, and the upper mat 11 and the lower mat 12 are coupled by hinges 3 on the left and right of the center portion.

In the present invention, the mat portion is meant to include a lower frame such that the mattress 110 and the lower metal frame 16 are formed separately as in the present embodiment (FIGS. 1 and 2). Although described, it means a mat including a case where a frame is included in the mat portion and a case where no frame is provided in the mat portion.

In the present embodiment, the mattresses 110 and 120 have a multilayer structure as shown in FIG. The mattresses 110 and 120 are formed by wrapping a layer surrounded by a nonwoven fabric and a high-resilience urethane 81 provided on the upper side thereof with a side fabric 86.

In the middle (layer) surrounded by the nonwoven fabric 85 in a bag shape, a foamed polyethylene 82, a polypropylene plate 83 (plastic stage), and a steel pipe 84 are provided in this order from the top.

Although an example in which foamed polyethylene 82 is provided inside the mattress is shown, it is desirable that this layer is provided with a hard foamed resin layer, and in particular, the hard foamed resin layer is selected from the group consisting of foamed polyethylene, foamed polypropylene, and foamed ethylene vinyl acetate copolymer. It is desirable to consist of at least one selected.

Moreover, although the example which used high-resilience urethane was shown in the upper part, low-resilience urethane, cotton, etc. can also be used instead. Conventionally, the mattress part and the main body were heavy because it had a urethane layer and plywood, but as this configuration, a foamed polyethylene 82 with an expansion ratio of 30 to 60 times, preferably about 40 times, was used. By using a plastic stage, the weight can be reduced by about 7kg compared to the conventional product.

A hinge 3 is provided at the center side end of the frame 16 constituting the mat provided under the mattresses 110 and 120, and the mat can be changed from a horizontally developed state to an inverted V-shaped folded state. A central leg 20 is provided at the lower part of the joint portion (bed center) of the mats 11 and 12 so as to extend in the width direction of the mat portion.

The frame 16 is a U-shaped or B-shaped frame made of metal provided at the lower part of the mattress. Each of the legs 2 on the end side (head side or foot side) of the mattress can rotate 2 Each leg is pivotally supported.

The center leg 20 is a U-shaped leg formed by joining both ends of a metal pipe in the vicinity of the hinge portion, and is configured to contact the installation surface when deployed. As for the legs, the upper leg 21 on the upper side and the lower leg 22 on the lower side of the bed are provided on the left and right sides, and the four legs are provided at the four corners in the bed total.

It is desirable to install the upper leg 21 and the lower leg 22 on the more end side in the longitudinal direction of the mat. However, when the legs are provided on the extreme end side, there is a problem that the height when the inverted V shape is folded when not in use becomes too large. The rotating leg columns 210 and 220 of the leg are fixed to the inside.

In addition, as shown in the horizontal unfolded state (FIG. 1) and the inverted V-shaped folded state (FIG. 5), the leg supports 210 and 220 of the leg portion are positioned perpendicular to the mat portion from the mat portion. It is pivotally supported so that it can rotate to a parallel position.

Leg seats 211 and 221 are provided at the lower part of the leg column 210, and two casters 212 and 222 are installed at the lower ends thereof.

In addition, a biasing member 4 is provided between the center leg 20 and the mat. The installation position of the urging member (spring) can be provided at various positions as conventionally known. In this embodiment, one end is attached to the frame 16 of the mat portion and the other end is attached to the central leg 20. . Thereby, it assists so that a user's operation | movement may become light when changing the form of a bed.

As shown in FIG. 4, auxiliary legs 25 are provided at the longitudinal ends of the bed (the longitudinal ends of the mat). The auxiliary leg 25 is rotatable from a horizontal storage state (broken line) to a vertical installation state (solid line). The auxiliary leg is a leg pivotally supported by the frame 16 of the mat portion, and has a length that reaches the installation surface when moved in the vertical direction. A hole 251 is provided in the auxiliary leg, and it can be fixed at each position by inserting a lock pin in the horizontal storage state and the vertical installation state.

The auxiliary legs 25 can be installed at two locations on the upper and lower sides in the longitudinal direction of the bed. As shown in FIG. 2, the auxiliary leg 25 is provided at the end side (outside) more than the leg (the caster outside the leg) at least in the horizontal direction.

Further, the auxiliary leg 25 has been described as an example of rotating in the short direction of the mat portion. However, an operation method of rotating in the longitudinal direction (rotating in the front-rear direction) may be used, and an operation for making the auxiliary leg detachable. It does not matter if it is a method.

When the folding bed of this configuration is used, the lock pin 71 is removed from the storage state shown in FIG. 5, and it is deployed in a horizontal state while gripping the handle 5 (FIG. 1). After deployment, the upper and lower auxiliary legs 25 are rotated from the horizontal storage state (broken line) to the vertical installation state (solid line) as shown in FIG. By providing this auxiliary leg, even if a force F (downward force) shown in FIG. 3 is applied to the end of the mat, the lift U at the center is suppressed. As the force F, a scene where a user sits at the end is assumed.

Although it is a simple configuration, the use of this patent is significant in the field of folding beds because it is possible to suppress the lifting of the central portion by installing the auxiliary legs of this configuration.

It is a figure which shows the perspective view (use condition) of the folding bed concerning this Embodiment. It is a side view of the folding bed concerning this Embodiment. It is a figure for description of the conventional folding bed. It is a figure of the longitudinal direction edge part side of the mat part of the folding bed concerning this Embodiment. It is a figure of the folding state at the time of non-use of a folding bed. It is a partially expanded sectional view of the partially broken sectional view of the mat portion of the folding bed according to the present embodiment. It is a partially expanded view of a partially broken sectional view of a mat portion of a conventional folding bed.

1
Matt 11
Upper mat 110 Mattress 12
Lower mat 120 Mattress 16 Frame 2 Leg 20 Central leg 21 Upper leg 210 Leg strut 211 Leg seat 212 Caster 22 Lower leg 220 Leg strut 221 Leg seat 222 Caster 25 Auxiliary leg 3 Hinge 31 Hinge cover 4 Spring (biasing member)
5 Handle 7 Fixing tool 71 Lock pin 81 Urethane

Claims (4)

In the folding bed comprising a plurality of mat portions that can be folded so as to be movable between a use state position and a non-use state position, a hinge portion that connects the plurality of mat portions, a leg portion, and an urging member, A folding bed characterized in that an auxiliary leg that can be operated is provided at an end of the mat portion in the longitudinal direction.   The folding bed according to claim 1, wherein the auxiliary leg is provided outside the leg part in the longitudinal direction of the mat part.   The folding bed according to claim 1 or 2, wherein the auxiliary leg is rotatable in a longitudinal direction or a short direction of the mat portion. The folding bed according to claim 1 or 2, wherein the auxiliary leg is detachable.