JP2591953Y2 - Bottom bed equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom bed apparatus for elastically placing a mattress on an upper surface.

[0002]

2. Description of the Related Art In order to improve the performance of a bottom bed device for mounting a mattress, there is a bottom bed device capable of elastically supporting the mattress. As such a bottom bed device, Japanese Utility Model Application Laid-Open No. 58-6382.
There is a structure shown in Japanese Unexamined Patent Publication (Kokai) No. H10-26095.

That is, in the prior art disclosed in the above publication, a frame formed by a horizontal rod and a vertical rod into a rectangular frame shape.
Memory structure. The vertical rod of the frame structure is provided with a head plate in which the plate is bent in a U-shape. Inside this head plate, there is a crossbar
Are inserted, and a plurality of openings are formed at predetermined intervals in the longitudinal direction. A hook portion bent at the end of the spring wire is engaged with a portion of the crossbar exposed from the opening.

A padding is placed on the spring line extending between the vertical rods of the frame structure in this way, and the padding is covered with a cloth. The mattress is supported on this cloth.

According to the bottom bed apparatus having the above-described structure, when a load is applied to the spring wire, the hook at the end of the spring bed swings, and the cross bar also bends. It can be supported.

By simply inserting the crossbar into the inside of the head plate, the amount of bending of the crossbar does not become so large even if it receives a load from a spring wire, so that the elasticity for supporting the mattress is too great. No. In order to increase the amount of bending of the crossbar, the crossbar may be softened or the wire diameter may be reduced to facilitate elastic deformation.

However, if the crossbar is made softer or thinner, the elasticity for supporting the mattress can be increased, but the strength of the crossbar itself is reduced. It becomes too large and there is a possibility that the hook part of the spring wire may come off,
The engagement of the spring wire with the hook may not be maintained reliably.

[0008]

As described above, conventionally, the crossbar was merely inserted through the inside of the head plate. Therefore, if the crossbar was not softened or thinned, this crossbar was not used. -Cannot be sufficiently elastically deformed against the load received from the spring wire.

The present invention has been made based on the above circumstances, and its purpose is to make the crossbar sufficiently elastically deformable against the load received from the spring wire without making the crossbar soft or thin. An object of the present invention is to provide a bottom bed device as described above.

[0010]

In order to solve the above-mentioned problems, the present invention has a frame structure in which a plane shape is formed by a vertical rod and a horizontal rod into a rectangular frame shape. In a bottom bed device in which both ends are engaged with a vertical rod of a body and a spring wire is stretched, a head plate provided on the vertical rod and having an insertion portion extending over the entire length in the longitudinal direction is formed. An opening formed at a predetermined interval in the longitudinal direction of the rod; and a crossbar inserted into the insertion portion and engaged with a hook formed at an end of the spring wire at a portion exposed to the opening. And projections formed on both sides of the opening of the head plate so as to protrude into the insertion portion and supporting both sides of a portion of the crossbar exposed to the opening.

[0011]

According to the above construction, when the crossbar receives a load from the spring wire, it bends with the protrusion as a fulcrum, so that the amount of deflection can be increased.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. The bottom bed device shown in FIGS. 4 to 6 includes a frame structure 1. This frame structure 1 is formed by assembling a pair of horizontal rods 3 like a pair of vertical rods 2 in a rectangular frame shape.

A head board 4 is provided upright at one end of the frame structure 1 in the longitudinal direction, and legs 5 are provided at four corners of the lower surface. As shown in FIG. 1, one of the vertical rods 2 located on the side of the headboard 4 is made of a square tubular material,
Is made of an angle material.

On the inner peripheral surface side of one of the vertical rods 2, a head plate 6 whose cross-sectional shape is bent in a substantially rectangular shape is fixed over the entire length of the vertical rod 2. The above head play
The inside of the bent portion 6a of the gate 6 is formed in an insertion portion 6b through which the crossbar 7 is inserted. The bent portion 6
a, a plurality of openings 8 are formed at predetermined intervals in the longitudinal direction of the vertical rod 2 so as to communicate with each other in the up-down direction of the bent portion 6a. 7 is exposed. Further, the bent portion 6a
A pair of projections 9 protruding into the insertion portion 8 are provided on both sides of the opening 8. Therefore, the crossbar 7 is not only simply inserted through the insertion portion 6b, but also both sides of the portion exposed to the opening 8 are supported by the pair of projections 9.

A hook portion 12 which is bent into a hook shape at one end of a spring wire 11 is engaged with a portion of the crossbar 7 exposed to the opening 8. Although not shown, a hook portion is formed at the other end of each spring wire 11 in the same manner as the one end, and the hook portion is formed of the other vertical rod 2 made of an angle material.
Are engaged with engagement holes 13 formed at the same intervals as the openings 8.

Between the pair of horizontal rods 3 of the frame structure 1, two cross beams 14 are provided at predetermined intervals. A cushioning material 15 is attached to the upper surface of the cross beam 14. The cross beam 14 restricts the spring wire 11 stretched between the vertical rods 2 from being excessively bent,
The cushion material 15 provided on the upper surface is
When it is bent, it is prevented from directly hitting the cross beam 14 to generate noise.

A protective cloth 16 and a sheet-like elastic material 17 are sequentially laminated on the spring wire 11 on which the frame structure 1 is stretched, and the elastic material 17 is covered with an exterior ground 18. . Then, a mattress 19 indicated by a chain line in FIG. 4 is placed and supported thereon.

According to the bottom bed apparatus having the above configuration, when the user lies on the mattress 19, the load is applied to the spring wire 11. When the spring wire 11 receives a load, the hook portion 12 is elastically deformed by the load, and the portion of the crossbar 7 with which the hook portion 12 is engaged is also elastically deformed.

The portion of the crossbar 7 with which the hook portion 12 is engaged, that is, the portion which is inserted through the insertion portion 6b of the head plate 6 and is exposed from the opening 8, has both sides of the portion covered with the head plate 6. Are supported by a pair of protrusions 9 formed on the bent portion 6a. Therefore, the crossbar 7 has a span longer than the length exposed at the opening 8,
That is, since the elastic deformation is performed with the interval between the pair of projections 9 as the span, the amount of elastic deformation can be increased as compared with the case where the projections 9 are not provided.

Therefore, the elasticity for supporting the mattress 19 is increased, so that the comfort given to the user can be improved. Further, even when the crossbar 7 extends over time, since both sides of the portion exposed from the opening 8 are supported by the pair of projections 9, it is possible to prevent large deformation. . That is, the crossbar 7
, The tension of the spring wire 11 can be maintained to some extent by the pair of protrusions 9.

In the above-described embodiment, only one end of the spring wire is engaged with the cross bar. However, both cross beams are provided with cross bars, and both ends of the spring wire are engaged with the cross bar. The configuration may be such that the elastic deformation amount of the spring wire can be further increased.

[0022]

As described above, according to the present invention, the crossbar is exposed to the head plate having the insertion portion through which the crossbar is inserted, and the hook at the end of the spring wire is engaged with the head plate. An opening is formed, and a pair of projections are provided outside the opening in the width direction to support the crossbar with a span longer than the length of the opening.

Therefore, when a load is applied to the crossbar from a spring wire, the crossbar is elastically deformed using the pair of projections as a span, so that the amount of deformation with respect to the load can be increased as compared with the case where there is no projection.

[Brief description of the drawings]

FIG. 1 is a perspective view of a part of one vertical rod according to an embodiment of the present invention.

FIG. 2 is a transverse sectional view of the same.

FIG. 3 is a longitudinal sectional view of the same.

FIG. 4 is a side view of the bottom bed device.

FIG. 5 is a plan view of the same.

FIG. 6 is a sectional view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame structure, 2 ... Vertical rod, 3 ... Horizontal rod, 6 ... Head plate, 6b ... Insertion part, 7 ... Crossbar, 8 ... Opening, 9 ... Projection, 11 ... Spring wire, 12 ... Hook part.

Claims (1)

(57) [Scope of request for utility model registration] 1. A frame structure having a rectangular frame shape formed by a vertical rod and a horizontal rod. A spring wire is stretched by engaging both ends of the frame with the vertical rod. In the bottom bed device to be installed, a head plate provided on the vertical rod and having an insertion portion extending over the entire length in the longitudinal direction, and an opening formed on the head plate at a predetermined interval in the longitudinal direction of the vertical rod A crossbar that is inserted into the insertion portion and that is engaged with a hook formed at an end of the spring wire at a portion exposed to the opening; and that the insertion is performed on both sides of the opening of the head plate. And a projection formed in the inside of the crossbar and supporting both sides of a portion exposed to the opening of the crossbar.