JPH06169953A - Bed provided with elevating leg part - Google Patents

Abstract

PURPOSE:To provide a caster mechanism on a tea provided with an elevating mechanism corresponding to making the bed face lower. CONSTITUTION:The first base frame 6 and the second base frame 7 are supported by the first and the second movable frames 8 and 9 which are fixed on a shaft together under a crossed condition and a roller member 10 is provided on each one end part of the first and the second base frames 8 and 9 and each another end part side is respectively fixed rotatably on each one end part side of the first and second base frames 6 and 7 to form a leg part 2. A pair of fixing bars 14 are provided by connecting them with free bending so as to hang them on the first base frame 6 and casters 17 are provided on the lower face sides of the fixing bars 14. One end part of an operating arm fixed rotatably on the second movable frame 9 is brought into contact with the fixing bar 14 through a roller member 20 and another end part is fixed on a female screw 13 of a driving mechanism. It is possible thereby to move easily it to determine an arranging place and to make carrying easy to reduce labor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed having lifting legs.

[0002]

2. Description of the Related Art Recently, beds, especially beds for patients, have become widespread, which are provided with a function of freely elevating and lowering the entire bed or floor plate and adjusting the undulation. Among them, an elevating mechanism capable of elevating and lowering the entire bed is devised for the convenience of a patient or from the viewpoint of treatment, and has many advantages. Furthermore, the elderly population in Japan is
Against the background of the increasing number of beds, beds are being lowered to make it easier for the elderly to use. Therefore, the applicant of the present invention has already proposed an elevating mechanism corresponding to the low floor.

[0003]

Since the bed usually requires a caster mechanism, the caster mechanism has been concretely studied also for the bed having an elevating mechanism corresponding to the lower floor. On the other hand, when used at home, the bed is often placed in a Japanese-style room, so no casters are provided. Therefore, although not frequently performed, the bed must be lifted when moving or cleaning the bed, and it is required to have a caster mechanism. The present invention has been proposed from such a background, and an object of the present invention is to provide a bed including a caster mechanism having a simple structure, and a lifting leg that can be easily moved to set an arrangement location. To do.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a bed provided with a lifting leg in which a drive unit is incorporated, in which the floor is raised and lowered by activating the drive unit. On the other hand, it is characterized in that it is provided with a moving caster mechanism configured so that the legs can be projected and stored. Further, according to the present invention, the first base frame and the second base frame are supported by the first and second movable frames which are in an intersecting state and axially connected to each other at an intermediate portion. , Second
A rolling member is provided on one end of the movable frame, while the other end is rotatably attached to one end of the first and second base frames, and a drive motor is provided on the first movable frame side. A pair of mounting rods are connected to the drive shaft of the drive motor, and a female screw that moves forward and backward on the screw shaft is attached to the second movable frame side, and is connected so as to be bendable and the entire length is adjustable. Is mounted on the first base frame, casters are provided on these mounting rods, an operating arm is rotatably attached to the second movable frame, and one end of this operating arm is attached to a female screw while the other end is attached. Part is movably brought into contact with the mounting rod, the second base frame can be vertically moved up and down with respect to the first base frame by starting the drive motor, and the operating arm is interlocked with the forward and backward movement of the female screw. The pair of mounting rods are interlocked with each other to move the casters to the first base frame. Characterized by being configured to protrude stored in square.

[0005]

When the drive motor is activated, the lifting leg can be moved up and down to adjust the floor to a desired height. When the installation location is changed in the room, the drive motor is started in the same way as during the lifting operation. At this time, the height of the lifting legs should be the lowest. When the female screw is projected and moved, the actuating arm is interlockedly displaced, and the other end of the actuating arm moves while abutting against the mounting frame, so that the mounting frame is pressed and displaced downward, and as a result, the caster is moved downward in the first base frame. And the entire bed is supported by the casters.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a bed equipped with lifting legs according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a bed 1 having lifting legs. The bed 1 has a leg portion 2 which can be vertically raised and lowered, a frame 3, a board 4 detachably provided on the frame 3, and a floor portion 5.

The leg portions 2 are provided in the vicinity of both longitudinal end portions of the frame 3, and as shown in FIG. 2, the first base frame 6 and the second base frame 7 are crossed with each other. It is supported by first and second movable frames 8 and 9 which are axially connected to each other at an intermediate portion, and a roller member 10 is provided at one end of these first and second movable frames 8 and 9 while the other end is provided. Part side is the first and second
The base frames 6 and 7 are rotatably attached to one end side. A drive motor 11 is provided on the first movable frame 8 side, a screw shaft 12 is connected to the drive shaft of the drive motor 11, and the screw shaft 12 is mounted on the second movable frame 9 side. A female screw 13 that moves back and forth is attached. With this configuration, the drive motor 1
1 to rotate the screw shaft 12 and
By moving 3 on the screw shaft 12, the roller member 10 at one end of the first and second movable frames 8 and 9 rolls along the first and second base frames 6 and 7, and A function of vertically moving the base frame 7 with respect to the first base frame 6 is realized.

In such a leg portion 2, a pair of mounting rods 14 are provided so as to be bendable so as to be hung on the first base frame 6. That is, these mounting rods 14 are attached to the elongated holes 15 formed in one of the mounting rods 14 and to the other mounting rods 14 respectively.
The pin member 16 protrudingly provided is loosely fitted and is movably connected. A caster 17 is provided on the lower surface side near the end of the mounting rod 14 attached to the first base frame 6. Then, one end of the operating arm 19 rotatably attached to the second movable frame 9 about the fulcrum A is brought into contact with the receiving portion 18 on the upper surface side of the attachment rod 14 via the roller member 20. There is. The other end of the operating arm 19 has a female screw 1
It is attached to 3.

Next, the operation of the bed 1 provided with the lifting type leg portions having the above-mentioned structure will be described. When raising the floor 5, the drive motor 11 is activated to rotate the screw shaft 12 and move the female screw 13 to the left in the figure. Then, the roller member 10 at one end of each of the first and second movable frames 8 and 9 rolls leftward along the first and second base frames 6 and 7, and thus the second base frame 7 is formed. Is pushed up, and the floor 5 rises. At this time, the operating arm 19 attached to the second movable frame 9 is displaced in the counterclockwise direction, and the second movable frame 9 rises, so that the roller member 20 at one end of the operating arm 19 is received by the mounting rod 14. When detached from the portion 18, the mounting rod 14 is not affected. Then, when the floor portion 5 reaches a desired height, the drive motor 11 is stopped. Further, when lowering the floor portion 5, the drive motor 11 is started in reverse rotation. In this way, the drive motor 11 can be activated to adjust the floor 5 to any position.

Next, when the location of the bed 1 is changed in the room, the drive motor 11 is moved in the same manner as during the lifting operation.
To start. However, in this case, the height of the lifting leg 2 is set to the lowest level. When the female screw 13 is moved rightward as shown in FIG. 3 by starting the drive motor 11,
The operating arm 19 is interlocked and displaced clockwise around the fulcrum A.
Then, the roller member 20 at the other end of the operating arm 19 moves while contacting the receiving portion 18 of the mounting rod 14,
The pair of mounting rods 14 are pushed downward around the connecting point. In these mounting rods 14, the elongated holes 15 at the connecting portions are provided with the pin members 16 of the other mounting rod 14.
Moves, and as a result, the entire length of the mounting rod 14 is displaced and becomes a straight line connecting the mounting points with the first base frame 6, so that the casters 17 project below the first base frame 6 and the bed 1
The whole can be supported by the casters 17. As a result, the bed 1 can be easily moved and the arrangement position can be adjusted.

[0011]

As described above, according to the present invention, the caster mechanism having a simple structure allows the caster mechanism to be easily moved and the placement location to be determined, so that the handling is easy and the labor is reduced. it can.

[0012]

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a bed including lifting legs according to the present invention.

FIG. 2 is a side view showing the mechanism of the lifting leg of the bed shown in FIG.

FIG. 3 is a side view illustrating the operation of the lifting leg shown in FIG.

[Explanation of symbols]

 1 bed 2 legs 3 frame 4 board 5 floor 6 first base frame 7 second base frame 8 first movable frame 9 second movable frame 10 roller member 11 drive motor 12 screw shaft 13 female screw 14 mounting rod 15 long hole 16 pin member 17 caster 18 receiving portion 19 operating arm 20 roller member

Claims (2)

[Claims] 1. A bed provided with a lifting leg incorporating a drive unit, wherein the floor is raised and lowered by the activation of the drive unit, while the leg is provided with a moving caster mechanism capable of projecting and storing. A bed with lifting legs that is characterized by: 2. A first base frame and a second base frame are supported by first and second movable frames which are in an intersecting state and axially connected to each other at an intermediate portion. A rolling member is provided at one end of the second movable frame, while the other end is rotatably attached to one end of the first and second base frames, and a drive motor is provided at the first movable frame. Is provided, the screw shaft is connected to the drive shaft of the drive motor, and the second movable frame side is
Attach a female screw that moves back and forth on the screw shaft,
A pair of mounting rods, which are bendably connected so as to be adjustable in overall length, are attached to the first base frame by spanning them, casters are provided on these mounting rods, and an operating arm is rotatably attached to the second movable frame. , One end of the operating arm is attached to the female screw, the other end is movably brought into contact with the attachment rod, and the second base frame is vertically moved with respect to the first base frame by activation of the drive motor. A vertically movable leg portion, which can be raised and lowered, is configured such that a pair of mounting rods are interlockedly displaced through an operating arm in association with the forward and backward movement of the female screw, and the caster is projected and stored below the first base frame. Bed provided.