Moving bed

Abstract

A moving bed has a fixed bed part as a resting area for the head and upper body of a person, and a longitudinally moving bed part as a resting area for the buttocks and legs of a person. The bed has a first bed frame in the form of a stationary fixed frame that extends as a stationary longitudinal frame over the entire length of the bed and on which the upper, fixed bed part is formed. The bed has a second bed frame as a moving frame, which forms the lower longitudinally moving bed part; the moving frame is held to the fixed frame so that it can move longitudinally. A motor drive is mounted between the fixed frame and the moving frame, and by this motor drive, the moving frame may be moved alternatingly back and forth relative to the fixed frame in a predetermined longitudinal section.

Claims

1. A moving bed, comprising: a stationary longitudinal fixed bed frame extending over an entire bed length, said stationary longitudinal fixed bed frame having opposing longitudinal frame parts and a fixed cross strut, said fixed cross strut having opposite ends respectively fixed on said opposing longitudinal frame parts, said cross strut defining a first frame area being a fixed bed part and delimiting a second frame area adjacent said fixed bed part, said fixed bed part functioning as a resting area for a head and upper body of a person; a moving frame being supported on top of said stationary longitudinal fixed bed frame in said second frame area, said moving frame disposed in a longitudinally movable manner, said moving frame being shorter than a longitudinal extent of said second frame area; and at least one controllable motor drive mounted and coupled between said stationary longitudinal fixed frame and said moving frame, and said controllable motor drive moving said moving frame alternatingly back and forth relative to said stationary longitudinal fixed frame in a predetermined longitudinal section.

2. The moving bed according to claim 1, wherein said controllable motor drive is disposed on said stationary longitudinal fixed bed frame, said controllable motor drive has a push-pull rod aligned in a longitudinal direction and an electric motor that is coupled to said moving frame by said push-pull rod.

3. The moving bed according to claim 2, wherein said controllable motor drive includes: said electric motor being an electromotive eccentric drive with said push-pull rod being coupled to said moving frame; or said electric motor having a spindle with a spindle nut being fastened to said moving frame.

4. The moving bed according to claim 2, wherein said controllable motor drive is disposed on said stationary longitudinal fixed bed frame.

5. The moving bed according to claim 1, wherein: at least one of a frequency of a sinusoidal motion sequence at said controllable motor drive or a motor running time is established by said controllable motor drive.

6. The moving bed according to claim 1, wherein: said stationary longitudinal fixed bed frame has a rectangular base frame; and said fixed bed part includes a second cross strut attached to said rectangular base frame to define a longitudinal end of said stationary longitudinal fixed bed frame, said cross struts define a length of said fixed bed part, said cross struts have a height that corresponds to a height of said moving frame, so that a substantially flat, continuous bed surface is defined by said fixed bed part and said moving frame.

7. The moving bed according to claim 6, wherein at least one of said stationary fixed frame or said moving frame are produced from metal profiles; said rectangular base frame has mutually-offset rollers disposed in pairs opposite one another, said rollers are attached to said rectangular base frame of said stationary longitudinal fixed bed frame on said opposite longitudinal frame parts, said mutually-offset rollers are fastened to have roller axes extend transversely; and said moving frame is a rectangular moving frame with longitudinal moving frame parts resting on said mutually-offset rollers for movement of said moving frame.

8. The moving bed according to claim 7, wherein said mutually-offset rollers are positioned toward an inside of said rectangular base frame; and said moving frame has retaining parts disposed on said moving frame to prevent lifting, said retaining parts having tracking parts in which said rollers are guided to ensure lateral tracking.

9. The moving bed according to claim 8, wherein: said moving frame has moving frame cross struts; said retaining parts are angle parts that are clamped onto said moving frame cross struts.

10. The moving bed according to claim 6, wherein said cross struts are two spaced-apart cross struts.

11. The moving bed according to claim 7, wherein said mutually-offset rollers are four rollers.

12. The moving bed according to claim 1, further comprising a flat rigid or flexible support mounted respectively on said fixed bed part of said stationary longitudinal fixed bed frame and on said moving frame, said flat rigid or flexible support being spaced in a longitudinal direction.

13. The moving bed according to claim 12, further comprising: a continuous mattress having a compressible and extensible area, said continuous mattress being disposed on said flat rigid or flexible support.

14. The moving bed according to claim 13, wherein said controllable motor drive is configured to apply a force of at least 50 kp in order to move said moving frame, and the force is transferred to the person via said mattress and said flat rigid or flexible support.

15. The moving bed according to claim 13, wherein said flat rigid or flexible support is a slatted frame.

16. The moving bed according to claim 15, wherein said mattress is disposed on said slatted frame.

17. The moving bed according to claim 1, wherein said fixed cross strut is directly attached to said opposing longitudinal frame parts.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) The drawings show the following, in perspective view:

(2) FIG. 1 A fixed frame,

(3) FIG. 2 A moving frame,

(4) FIG. 3 A retaining part in the form of a Z-profile, attached to the moving frame to prevent the moving frame from being lifted upward from the fixed frame.

(5) FIG. 4 An exploded view of a fully equipped bed, and

(6) FIG. 5 An illustration of a complete bed substructure with slatted frames.

DESCRIPTION OF THE INVENTION

(7) FIG. 1 shows a fixed frame 2 of a moving bed 1 according to the invention, manufactured from rectangular metallic angle profiles. To form an upper fixed bed part 3, 2 cross struts 5a, 5b are attached to the base frame 4 of the fixed frame, of which one cross strut 5a forms the upper end of the fixed frame 2 and at a distance therefrom, the second cross strut 5b defines the length of the fixed bed part 3. The cross struts 5a, 5b rest on longitudinal frame parts 6a, 6b.

(8) The upper bed part 3 has a length of about 30 to 40% of the total frame length, corresponding to about the ratio of the length of the upper body of a person 29 to the person's height.

(9) Four rollers 8a, 8b, 8c, 8d with roller axes running transversely are arranged in respectively opposite corner areas on the longitudinal frame parts 6a, 6b in a lower frame area 7; taking into account the roller circumference, these protrude slightly beyond the longitudinal moving frame parts 6a, 6b.

(10) FIG. 2 shows a rectangular moving frame 9 manufactured from metallic extruded profiles, having a length slightly less than that of the lower frame area 7. The moving frame 9 is mounted on the rollers 8a, 8b, 8c, 8d with moving frame longitudinal parts 10a, 10b, in such a way that it may be moved longitudinally. In the corner areas of the moving frame 9, retaining parts 12a, 12b, 12c, 12d in the form of Z-shaped profiles are clamped to the moving frame cross struts 11a, 11b.

(11) FIG. 3 shows an enlarged view of such a z-shaped retaining part 12a; the retaining part consists of a z-shaped angle part 13, which with an approximately horizontal angle leg 14 engages under the associated roller 8a and merges into a vertical angle leg 16 by means of an inclined ramp 15. The four z-shaped retaining profiles 12a to 12d secure the mounted moving frame 9 against being lifted off from the fixed frame 2. The longitudinal movement is kept on track by two U-profiles (not shown) that are approximately 13 cm long; these profiles grip around two of the four rollers and are fastened to the moving frame, on either the left or right side.

(12) FIG. 4 shows an exploded view, in which parts of a complete bed 1 are arranged on top of each other:

(13) At the bottom is shown the fixed frame 2 with its base frame 4, on which the cross struts 5a, 5b form the upper bed part area 3, which serves as a stationary area for the head and upper body of a person 29.

(14) In the lower frame area 7, the moving frame 9 is already mounted on the rollers 8a to 8d, which may be moved longitudinally.

(15) For the longitudinal movement of the moving frame 9, a motor drive 17 is shown (not yet mounted), consisting of an electromotive eccentric drive 18 or spindle motor with spindle nut and a push-pull rod 19 serving as a connecting rod or spindle. The eccentric or spindle drive 18 is arranged on a transverse bridge part 20 which is connected to the longitudinal frame parts 6a, 6b of the fixed frame 2. In its assembled state, the push-pull rod pointing in the longitudinal direction, or the spindle 19 or spindle nut, is connected endwise with the rear cross strut 11a of the moving frame 9. In this way, the back and forth movements (arrow 21) of the connecting rod or spindle nut 19 are transferred to the moving frame 9 (arrow 22).

(16) When the bed 1 is complete, a first slatted frame 23 is placed on the upper fixed bed part 3 and a second slatted frame 24 is placed on the moving frame 9, the first upper slatted frame 23 being shorter than the second lower slatted frame 24, and both being spaced from one another by the maximum movement amplitude of the moving frame 9. As a general matter, simple plates or board supports may also be used as underlays for the mattress 25, which is situated on top as the final layer, rather than the slatted frames 23, 24.

(17) In this case, the movement and forces of the moving frame 9 are transferred via the lower slatted frame 24 to the lower area of the mattress 25 (arrow 26) and thus to the buttocks and legs as well as the musculature 27 of a recumbent person 29 (here depicted schematically using dashed lines). In order to favor this a relative movement between the upper fixed mattress area and the lower longitudinally movable mattress area, with only slight counterforces, the mattress 25, as schematically depicted here, may have a compressible and extensible area 28 with slight counterforces, located at the transition between the upper mattress area and the lower mattress area.

(18) FIG. 5 shows an example of an assembled bed 1 without a mattress, having a fixed frame 2, a moving frame 9, a slatted frame 23 mounted in the fixed upper resting area 3 and a slatted frame 24 mounted on the moving frame 9, as well as an assembled motor drive 17. Such an embodiment may, for example, be a tradable retail unit which is then available for separate installation or as a replacement for a conventional simple slatted frame to be placed in a bed frame with the addition of a mattress that may be selected subjectively.

LIST OF REFERENCE SIGNS

(19) 1 Moving bed

(20) 2 Fixed frame

(21) 3 Upper bed part

(22) 4 Base frame

(23) 5a, 5b Cross strut

(24) 6a, 6b Longitudinal frame parts

(25) 7 Lower frame area

(26) 8a, 8b, 8c, 8d Rollers

(27) 9 Moving frame

(28) 10a, 10b Moving frame longitudinal parts

(29) 11a, 11b Moving frame cross struts

(30) 12a, 12b, 12c, 12d Tracking parts

(31) 13 Angle part

(32) 14 Angle legs (horizontal)

(33) 15 Inclined ramp

(34) 16 Angle leg (vertical)

(35) 17 Motor drive

(36) 18 Electromotive eccentric drive

(37) 19 Push-pull rod

(38) 20 Bridge part

(39) 21 Arrow

(40) 22 Arrow

(41) 23 First slatted frame

(42) 24 Second slatted frame

(43) 25 Mattress

(44) 26 Arrow

(45) 27 Musculature

(46) 28 Compressible and extensible area

(47) 29 Person