JPH03146010A - Lifting mechanism of floor plate in bed - Google Patents

Abstract

PURPOSE:To prevent the generation of a hindrance for use of a bedside cabinet and use of a lighting equipment provided on a head part side, etc., by moving a back part floor plate in the head part direction of a bed frame by a supporting a supporting member together with the other floor plate at the time of raising the back. CONSTITUTION:When an outside 13 is rotated by rotating a crank handle 9, an inside bar 12 rotates, and a screw shaft 7 connected to this inside bar 12 rotates. Subsequently, when a nut member 8 moves in the head part direction of a bed of a bed frame 1 along the screw shaft 7 by a rotation of the screw shaft 7, and a supporting member 3 moves gradually in the head part direction of the bed frame 1 as a back part floor plate 2a turns and ascends, the inside bar 12 also moves in this direction and expands from an outside pipe 13, but since these inside bar 12 and outside bar 13 are constituted so that the outer shape and the inside shape are constituted to the corresponding different forms, respectively and fitted, torque can be transferred irrespective of expansion and contraction, and also, no mechanical immoderateness is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mechanism for raising and lowering a floorboard in a bed.

(Prior art and its problems) In a bed in which the back floor plate is rotated and raised around a rotational fulcrum fixed to the bed frame, the patient can be placed in a back-up position. When the patient or other user is placed in a raised position, the head of the user, such as a patient, gradually moves in the same direction as the bed. This may cause problems when using lighting fixtures installed on the wall.

The present invention aims to solve this problem.

(Means for Solving the Problems) The configuration of the present invention for solving the above problems will be explained with reference to drawings corresponding to embodiments. The back floor plate 2a and the other floor plates 2b, 2c, and 2d, which are configured to be able to be raised and lowered, are attached to a bed frame l.
Supported by a support member 3 provided movably in the longitudinal direction,
The support member 3 is configured to be moved together with the support member 3.
has a threaded shaft 7 in the longitudinal direction of the bed frame l.
is rotatably supported, and a nut member 8 is attached to the screw shaft 7.
At the same time, push the upper arm 1 onto the underside of the back floor plate 2a.
4, connecting the push-up arm 14 and the nut member 8 via an operating link 15, and connecting a support link 16 between the back floor plate 2a and the head side portion of the bed frame 1, is connected to a rotary drive means 9 supported on the bed frame 1 via a telescopic drive rod 11.

(Operation) Next, the operation of the present invention will be explained with reference to the drawings corresponding to the embodiments. First, in the state shown in FIG.
When the screw shaft 7 is rotated in a predetermined direction via the drive rod 11, the nut member 8 moves to the left in the figure and pushes up the pusher arm 14 via the operating link 15, so that the nut member 8 moves around the fulcrum 0. The back floor plate 2a rotates upward. When the back floor plate 2a rotates upward in this way, the connection point a with the support link 16 also rises, so the support link 16 rotates upward using the head side point of the bed frame l as a fulcrum. However, when this support link 16 rotates upward, its tip, that is, the connection point a, moves toward the head with respect to the longitudinal direction of the bed frame l, so that the back floorboard 2a is connected to the support member 3 and other floorboards. It moves toward the head together with 2b, 2c, and 2d. The above movement of the support member 3 can be absorbed by the extension of the drive rod 11, and therefore the rotary drive means 9 does not need to be supported by the bed frame 1 so as to be moved in the longitudinal direction thereof.

In this way, the back floorboard 2a and the other floorboards 2b, 2c
, 2d gradually move toward the head of the bed frame 1 as the back floor plate 2a rotates upward, as shown in FIG. 2, so the user's head does not move toward the foot of the bed. Further, when the rotation drive means 9 is rotated in the opposite direction to that described above, the back floor plate 2a rotates downward and gradually moves toward the foot of the bed frame 1 due to the operation opposite to that described above, as shown in FIG. 1 again. It can be returned to a flat state like this.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

First, in the figure, reference numeral 1 indicates a bed frame, and reference numeral 2 indicates a floorboard. In this embodiment, the floor plate 2 is the back floor plate 2.
a and other floorboards, namely a waist floorboard 2b, a thigh floorboard 2C, and a foot floorboard 2d. These floor plates 2a, 2b, 2c, and 2d are connected to each other so as to be flexible and are integrally formed.

The bed frame 1 is provided with a support member 3 so as to be movable in the longitudinal direction, and the waist floor plate 2b is fixed to the support member 3, and the floor plates 2a, 2b, 2
c, 2d are configured to be moved in the longitudinal direction of the bed frame 1 together with the support member 3, and the back floor plate 2a is configured to be rotatable up and down with the connection position 0 with the waist floor plate 2b as a fulcrum. In addition to this configuration, the back floor plate 2a is not flexibly connected to the waist floor plate 2b, and the support member 3
It may be configured so that it is directly supported in a manner that it can be rotated and raised and lowered. The thigh floor plate 2c and the foot floor plate 2d can be supported so as to be raised and lowered by an appropriate lifting mechanism (not shown),
Reference numeral 17 is a support link that constitutes a part of this lifting mechanism. Moreover, these floor plates 2c and 2d and the waist floor plate 2b can also be constructed integrally on a plane. The support member 3 is
The rollers 4 provided thereon are supported by a guide frame 5 in the shape of a groove or the like provided in the longitudinal direction of the bed frame l so as to be movable. In addition to this configuration, the mechanism for moving the support member 3 may be any suitable mechanism. A screw shaft 7 is rotatably supported on the support member 3 in the longitudinal direction of the bed frame 1 by a bearing member 6, and a nut member 8 is screwed onto the screw shaft 7.

Reference numeral 9 denotes a rotary drive means supported on the bed frame l, and a drive rod 11 is interposed between the rotary shaft 10 of the rotary drive means 9 and the screw shaft 7, and this drive rod 11 can be rotated telescopically. It is configured to transmit force. For example, as shown in the figure, the drive rod 11 can be composed of an inner rod 12 and an outer pipe 13, each of which has a correspondingly irregular outer and inner shape and which are fitted together. Also, the rotational drive means 9
In addition to being a crank handle as shown in the figure, the crank handle 9 can be configured by an electric motor, and in the case of the crank handle 9, it can be easily operated by being supported on the foot side of the bed frame 1.

Next, reference numeral 14 is a push-up arm provided under the back floor plate 2a, and this push-up arm 14 and the nut member 8 are connected to the operating link 1.
Connected by 5. Reference numeral 16 denotes a support link, and one side a of the support link 16 is rotatably fixed to the back floor plate 2a, and the other side is rotatably fixed to the head side of the bed frame 1. .

In the above configuration, when the crank handle 9 is rotated to rotate the outer pipe 13, the inner rod 12 is rotated, and the screw shaft 7 connected to the inner rod 12 is rotated. The rotation of the screw shaft 7 causes the nut member 8 to
When the support member 3 moves along the threaded shaft 7 toward the head of the bed frame 1 and gradually moves toward the head of the bed frame 1 as the back floor plate 2a rotates and rises as described above, the inner rod 12 also moves toward the head of the bed frame 1. It moves in this direction and extends from the outer pipe 13, but since the inner rod 12 and the outer pipe 13 have a corresponding irregular outer shape and inner shape and are fitted together, the inner rod 12 and the outer pipe 13 can It is possible to transmit rotational force and does not cause mechanical strain.

(Effects of the Invention) As described above, in the present invention, when the back is raised, the back floorboard moves toward the head of the bed frame together with other floorboards by the support member, so the user's head does not move toward the foot of the bed. This has the effect that there is no problem in using the bedside cabinet or the lighting equipment installed on the indoor wall on the head side.

[Brief explanation of the drawing]

All figures correspond to embodiments of the present invention, and FIGS. 1 and 2 are explanatory side views showing the overall configuration and operation, and FIG. 3 is an explanatory side view showing the overall configuration and operation.
The figure is an explanatory cross-sectional view taken along the line X--X in FIG. 1, and FIG. 4 is an explanatory cross-sectional view taken along the line Y-Y in FIG. 1. Code l...Bed frame, 2...Floor board (2a...
・Back floor plate, 2b...lumbar floor plate, 2c...thigh floor plate, 2d...foot floor plate), 3...support member, 4...
・Roller 5... Guide frame, 6... Bearing member, 7...
- Screw shaft, 8... Nut member, 9... Rotation drive means (crank handle) 10... Rotating shaft, 11.
... Drive rod, 12... Inner rod, 13... Outer pipe, 14... Push upper arm, 15... Operating link, 16.1
7...Support link. The first broken book

Claims (4)

[Claims] (1) The back floor plate and other floor plates, which are configured to be able to rotate up and down, are supported by a support member provided movably in the longitudinal direction of the bed frame, and are moved together with the support member, and the support member has the rotatably supporting a screw shaft in the longitudinal direction of the bed frame, screwing a nut member onto the screw shaft, and providing a push-up arm on the lower side of the back floor plate;
The pushing upper arm and the nut member are connected via an operating link, and a support link is connected between the back floor plate and the head side of the bed frame, and the screw shaft is connected to the bed via a telescopic drive rod. A mechanism for raising and lowering a floor plate in a bed, characterized in that it is connected to a rotation drive means supported on a frame. (2) The drive rod described in item 1 is constructed of an inner rod and an outer pipe, each having a corresponding irregular outer shape and inner shape and fitted together. Lifting mechanism (3) A mechanism for lifting and lowering a floor plate in a bed, wherein the rotational drive means according to item 1 is a crank handle rotatably supported on the foot side of the bed frame. (4) A mechanism for raising and lowering a floor plate in a bed, characterized in that the rotational drive means described in item 1 is constituted by an electric motor supported on a bed frame.