Earthquake-proof sleeping place

BACKGROUND OF THE INVENTION

The present invention refers to an earthquake-proof sleeping place comprising a bed, a base frame and at least one protective frame adapted to be moved upward relative to the base frame.

In areas threatened by earthquakes there is a risk of people being caught in their sleep by an earthquake and being killed or injured by collapsing building parts. To reduce this risk, different sleeping places have been developed that have a protective frame which, triggered by an earthquake sensor rises above the bed and protects the same at least against larger collapsing building masses. Such a sleeping place is described in JP-08 266 374 A. The protective frame is made of spring-loaded parts moved upward and locked when triggered. It surrounds the entire circumference of the bed and thus presents a considerable nuisance that substantially hinders the use of the bed and the making of the bed.

JP-08 266 373 A describes an earthquake-proof sleeping place wherein the bed is normally fastened in a raised position on a frame and is lowered when triggered so that the frame projects vertically above the bed. Again, this only provides protection against larger debris such as concrete ceilings.

JP-08 322 956 A describes a protective frame extending over the bed in the manner of a canopy and being guided in telescopic tubes. The canopy is supported by air bags disposed within the telescopic tubes. These known protective devices for sleeping places are disadvantageous in that they provide such significant changes to the bed that comfort is considerably restricted. Moreover, in many cases, the protective frame only projects upward from the sides of the bed so that medium size debris parts can fall on the bed and the sleeping person.

It is an object of the present invention to provide an earthquake-proof that affects the bed only slightly and that is capable of effectively protecting the bed or a person sleeping therein from parts falling thereon.

SUMMARY OF THE INVENTION

The base frame of the sleeping place according to the present invention is arranged underneath the bed. This means that the major part of the base frame is situated in the region of the vertical projection of the bed, i.e. directly under the bed. The base frame has a guiding track for an arcuate supporting bar of the protective frame. In the withdrawn state of the protective frame, this supporting bar is located in the area of the base frame below the bed. In the extended state of the frame, it is moved upward along the guiding track, covering a part of the width of the bed. Thus, the invention provides not only a cage with side walls, but, as it were, a protective drum with a roof portion.

Preferably, the guiding track consists of the outer tube of a telescope tube, while the supporting bar consists of the inner tube thereof. This allows for a particularly favorable guiding of the supporting bar and for great stability. In this case, the tube telescope may at the same time serve as a piston cylinder unit for pneumatically pushing the inner tube from the outer tube.

At the upper end of the at least one supporting bar, the protective frame may have a longitudinal bar extending in the longitudinal direction of the bed. This longitudinal bar further increases stability. With a plurality of supporting bars present, it interconnects the same to form a rigid supporting frame. The longitudinal bar also reduces the mesh width of the protective frame.

A preferred embodiment of the invention is obtained by providing the base frame with two protective frames that, in the extended state, form a protective device vaulting over the bed. Preferably, this protective device is circular, the base frame, forming the stationary part of the protective device, extending over an angle slightly larger than 120° and each supporting bar also covering about 120°. The supporting bars in their extended state and the base frame combine to form a complete circle. However, it is not necessary for the two protective frames to contact or abut each other when extended. Rather, they may keep a distance from each other.

A substantial increase in security may be obtained by one air bag at least one protective frame, which covers part of the bed in its inflated state. In the event of an earthquake, this air bag is triggered by an earthquake sensor. By covering part of the bed, it protects a person lying in the bed from falling debris.

BRIEF DESCRIPTION OF THE DRAWINGS

The following is a detailed description of preferred embodiments of the present invention given with reference to the accompanying drawings, in which

FIG. 1

is a schematic perspective view of the earthquake-proof sleeping place set up for normal use,

FIG. 2

illustrates the sleeping place of

FIG. 1

in the triggered state in which the protective frames cover the bed from the sides,

FIG. 3

illustrates the same embodiment with air bags added, and

FIG. 4

shows an embodiment with a fire-protection cover sheet.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The sleeping place comprises a bed

10

resting on legs

11

so that there is a space under the bed

10

. The lying surface of the bed is designated as

12

.

In the space under the bed

10

, a base frame

13

is provided. This comprises a base plate

14

to which three arcuate guiding tube

15

are mounted. Each guiding tube

15

is bent in a vertical plane and curved arcuately, extending over an angular range of slightly more than 120°.

On each side of the bed, arcuate supporting bars

16

are provided, each of which protrudes fittingly into a guiding tube

15

. The supporting bars

16

are connected at their upper ends by a longitudinal bar

17

. Together with the longitudinal bar, they form a protective frame

18

. In the present embodiment, one protective frame

18

is provided on one side of the bed and another protective frame

18

a

is provided on the other side of the bed. The protective bars of the protective frame

18

a

extend into the opposite ends of the guiding tubes

15

. The guiding tubes

15

have a rectangular inner cross section, just as the supporting bars

16

have a rectangular outer cross section. The guiding tubes

15

form the outer tube of a telescope tube, while the supporting bars

16

form the inner tube thereof.

Preferably, each arcuate supporting bar

16

extends over an angular range of about 120°. In this case, the supporting bars

16

must overlap in one guiding tube

15

where they are guided in different tracks. Each guiding tube is provided with a pneumatic drive

20

adapted to generate pressure within the guiding tube

15

, thereby to push the supporting bar

16

out from the guiding tube. This drive may be a valve connected to a pressure source (not illustrated) or it may be a pressure gas generator pyrotechnically producing a pressure gas when triggered. As an alternative, the drive

20

may be hydraulically or electrically operated.

The drives

20

are actuated by an earthquake sensor

21

. This sensor is an acceleration sensor responding to sudden jolts. The earthquake sensor

21

is fastened on the base plate

14

so that the entire device forms a unit that includes all protective and drive elements and is simply set up on the ground. The bed

10

is a separate unit. It is place above the device after the same has been installed.

FIG. 2

illustrates the protective frames

18

,

18

a

in the extended state. Here, the protective frames form a protective device

22

spanning over the bed, the longitudinal bars

17

either contacting each other or extending in close side by side relationship. In the present embodiment, the protective frame

22

consists of three rings connected by longitudinal bars

17

.

FIG. 3

further shows the provision of air bags

23

at one or both protective frames

18

,

18

a

. Preferably, these air bags are mounted below the longitudinal bar

17

and are triggered by the earthquake sensor

21

, but only after the corresponding protective frame

18

,

18

a

has been extended. Therefore, the inflating devices of the air bag

23

have a delayed response as compared to the drives

20

. The air bags

23

are arranged in succession in the longitudinal direction of the bed and each cover a part of the bed or the person lying in the bed.

FIG. 4

illustrates an embodiment, wherein the protective frames

18

and

18

a

are each covered with a cover sheet

24

,

24

a

unfolding when the supporting frames are extended and offering protection against smaller debris falling down. The cover sheets

24

,

24

a

are made from a non-combustible material so that they also protect the person lying in the bed against smaller fires and flying sparks. For example, the cover sheets are fastened to the longitudinal bars

17

and unfold downward automatically when the protective frames

18

,

18

a

come up.