JPH0144111Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a bed, and more particularly to a bed in which a leaf spring as a cushion material is mounted on a bed underframe via an easy-to-install fixture.

(Prior art) Conventionally, there are two types of bed that use leaf springs as cushioning materials: fixed type and folding type.For both types, the method of attaching the leaf spring to the bed frame is to attach both ends of the leaf spring to the bed frame. It has been installed using mounting bolts or, as shown in FIG. 7, using a complicated mounting bracket B that utilizes a spherical bearing.

(Problems to be Solved by the Invention) Both of the above-mentioned mounting methods require troublesome and time-consuming mounting work, and mounting bracket B using a spherical bearing is too expensive as a mounting bracket. In addition, these attachments are firmly bolted to the leaf spring using washers, etc., so when a load is applied to the leaf spring, excessive force is likely to be applied to the leaf spring surface at the periphery of the washer. If a force exceeding a predetermined load is applied to the leaf spring (for example, when a child jumps up on a bed), the leaf spring will always break at this position. The above-mentioned phenomenon is often seen in leaf springs of the type in which glass fiber plates are attached to the upper and lower surfaces of a hard urethane foam core.

This idea was created in view of the problems mentioned above, and it is easy to install the leaf spring, and
The purpose is to provide a bed with inexpensive fittings used for its installation.

(Structure of the Invention) The bed of the present invention includes a bed underframe and a leaf spring as a cushion material, a fixture is fitted to both ends of the leaf spring, and a locking part is projected on the lower surface of the fixture. At the same time, locking receivers are provided at the upper ends of both left and right sides of the bed frame, and the locking portions of the mounting tool are fitted and locked in the locking receivers, and the leaf spring is fixed to the bed frame. They are constructed in parallel to the frame.

(Function) The attachment fittings fitted to both ends of the leaf spring of the bed of the present invention are locked to the locking receivers of the bed underframe by an extremely simple fitting operation, and the leaf springs are installed on the bed underframe. .

(Embodiment) An embodiment of the present invention will be described based on the drawings. In the drawing, A is a bed body;
In this example, leaf springs 2 with fittings 3 fitted at both ends are installed in parallel between the left and right side plates 1a, 1a of a bed underframe 1 formed into a planar rectangular frame shape using wooden boards,
A floor surface 6 is formed.

Support portions 7 for supporting both ends of the leaf spring 2 are attached to the upper portions of the inner surfaces of the left and right side plates 1a, 1a of the bed underframe 1 along the same side plates 1a, 1a. The support part 7 is made by attaching an aluminum strip plate horizontally to the inner surface of the side plate 1a, and a triangular member 8 is attached to the attachment part on the lower surface side.
It is formed by bonding and fixing, and locking receiving portions 5 are provided at predetermined intervals for fitting and locking the locking portions 4 of the fixture. In addition, in this embodiment, the locking receiving part 5
are elongated holes into which the locking portions 4 are fitted and locked, and are bored at predetermined intervals in the center of the band-shaped plate.

The leaf spring 2 installed between the left and right support parts 7 has a core material 2a made of hard urethane foam attached to the bed frame 1.
The core material 2a is cut into a long plate shape with a length that is approximately the same as the width of the core material 2a, and the central portion is made thicker and curved into a somewhat arched shape.Glass fiber sheathing plates 2b are attached to the upper and lower surfaces of this core material 2a. The fittings 3 are fitted to both ends of the plate.

The fitting 3 is made of synthetic resin, steel plate, or aluminum with appropriate elasticity, and is formed into a tube shape with a rectangular cross section that fits into the end of the leaf spring 2, and closes one end and fits into the other side. A portion 3a is formed. The upper and lower surfaces of the fixture 3 are curved inward so that when the end of the leaf spring 2 is inserted into the fitting part 3a, the end is held between the upper and lower sides, and the lower surface is curved inward. A locking portion 4 is integrally provided in a protruding manner. The locking part 4 is the mounting tool 3
The piece 4a on the fitting part 3a side is disposed on the lower surface closer to the fitting part 3a side, and horizontally elongated pieces 4a and 4b are erected at appropriate intervals along the edge of the fitting part 3a side.
A locking protrusion 4c is formed at the tip. (Fig. 4) The leaf spring 2 configured as described above is hung between the left and right support parts 7, and the locking parts 4 of the both end fittings 3 are inserted into the elongated holes that are the locking receivers 5 of the support part 7. Fit and lock. At this time, that is, when pushing the locking part 4 into the elongated hole, the pieces 4a and 4b both bend inward, and after passing through, return to the original state, and the locking protrusion 4c at the tip of the piece 4a becomes the locking receiver. 5 It is hung on the back side.

Then, the leaf spring 2 is attached to the lock receiving portion 5 of the left and right support portion 7.
A floor surface 6 having a cushioning function is formed by sequentially constructing the floor surface 6 in parallel in between.

Further, the bed frame 1 may be of a foldable type as shown in FIG. This bed underframe 1 is constructed by connecting the central parts of long steel plates 9 with a rotating screw 10 so that they overlap in a cross shape, and by connecting a large number of these cross-shaped long plates to form left and right side parts that can be expanded and contracted. form a frame of
A horizontal frame 11 is constructed between both ends of the frames. A support fitting 12 having locking receivers 5 on the upper surface is disposed at the upper connecting portion between the cross-shaped long plates 9, and the locking receivers 5 are connected to the upper ends of both left and right sides of the bed frame 1. The same plate springs 2 as described above are installed in parallel between the left and right locking receivers 5 at predetermined intervals. In addition, when folding the bed underframe 1, the lock part 1 attached to the horizontal frame 11 is
Release 3 and fold it back and forth.
(Not shown) In this way, the flat spring 2 can be installed by fitting the fittings 3 to both ends of the flat spring 2 in the fixed type bed frame 1 or the folding type bed frame 1. However, it can be attached by an extremely simple operation of fitting and locking the locking portions 4 of the mounting tool 3 into the locking receivers 5 on both the left and right sides.

In particular, if the fixture 3 is manufactured in large quantities using a synthetic resin having appropriate elasticity, it will be inexpensive, and as described above, when a destructive load is applied to the leaf spring 2, the locking part 4 4a, 4b break and come off from the locking receiving part 5, and the expensive leaf spring 2 (compared to the attachment) can be protected. Furthermore, if a synthetic resin with appropriate hardness and elasticity is used, the main body of the fixture 3 will bend in response to the load, and the two surfaces of the leaf spring that are constantly in contact with the side end of the fitting portion 3a will not be damaged.

(Effects of the invention) The present invention includes fitting fittings on both ends of the leaf spring, and fitting and locking the locking portions of the fittings into the locking receivers at the upper ends of both left and right sides of the bed frame. Since the leaf spring is attached to the bed underframe, it is extremely simple to fit the fixtures on both ends of the leaf spring, and then fit and lock the locking parts of the fixtures into the locking receivers. The leaf spring can be attached to the bed underframe by a simple process.

Furthermore, since the fixture of the present invention has a simple structure, it can be manufactured at a lower cost than conventional complicated fixtures.

[Brief explanation of the drawing]

Fig. 1 is an enlarged cross-sectional view of the installation part shown in Fig. 3, Fig. 2 is an exploded perspective view of a bed embodying the present invention, Fig. 3 is a cross-sectional view taken along the - line in Fig. 2, and Fig. 4 is Figure 5 is a perspective view showing the bottom of the fixture, Figure 5 is a plan view showing one side of the folding bed frame, Figure 6 is the
The side view in the figure and FIG. 7 are cross-sectional views showing the state in which the conventional plate spring mounting bracket is attached. In the diagram, A...Bed main body, 1...Bed underframe,
2...Plate spring, 3...Mounting tool, 4...Locking part, 5
...Locking receiver.

Claims (1)

[Scope of utility model registration request] This plate spring comprises a bed frame, a core material made of hard urethane foam, thick in the center, gradually thinner at both ends, and formed into a somewhat arched shape, with glass fiber plates attached to the upper and lower surfaces. A fitting having a rectangular cross-sectional cavity with one side closed and a fitting portion formed on the other side is fitted to both ends of the fitting, and two fitting protrusions are erected on the lower surface of the fitting. A locking portion having a tapered locking portion is provided on the fitting protrusion on the fitting portion side, and a locking receiving portion is provided on the support portions at the upper ends of the left and right sides of the bed underframe, The locking part of the fixture is fitted into the locking part, the locking part of the fitting protrusion is locked to the back surface of the locking part, and the bottom of the fixture is slightly raised on the fitting part side. A bed in which the above-mentioned leaf springs are arranged in parallel to the bed frame so that the closed side is in contact with the support part.