JPH08308688A - Traveling device for moving bed - Google Patents

Abstract

PURPOSE: To provide a traveling device for a moving bed with improved performances of straight line running and direction changing capable of being easily moved by single man, by mounting fixed wheels to the moving bed with casters. CONSTITUTION: Casters 2 are mounted in front and rear of this moving bed and fixed wheels 3R, 3L are mounted at the center in the longitudinal direction of the casters 2. An arm 6 connected to the fixed wheels 3R, 3L by a shaft 5 is installed and the tip of the arm is supported by an elevation device 4. The elevation device 4 is constructed so as to draw up and down the fixed wheels 3R, 3L connected to the elevation device 4. Thus, the straight running performance is improved without damaging the direction changing performance of the moving bed 1 and enables to be moved in all directions by supporting only with the casters 2 after lifting up the fixed wheels 3R, 3L from the floor face by the elevation device 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for improving the moving performance of a moving bed equipped with only free wheels.

[0002]

2. Description of the Related Art In a conventional moving bed, a free wheel is used in order to maintain a small turning performance when moving, but in order to add straightness, a part of the free wheel is fixed. It is designed to keep its straightness.

[0003]

When a free wheel is used as a fixed wheel, it must be operated each time.
In many cases, an emergency is required for the purpose of the moving bed, and the operation is often not executed, which impairs the straight running performance of the bed. Therefore, since it is difficult to keep the directionality of the moving bed and it is difficult for one person to move the moving bed, the moving bed is often supported and moved by two persons from the front and rear.

The present invention is characterized in that the straight-ahead performance in straight-ahead traveling is improved and the direction-changing performance is also good, so that it can be easily moved by one person.

[0005]

In order to solve this problem, the present invention provides a fixed wheel at the center of the front and rear free wheels, and the fixed wheel is moved up and down so as to be grounded or floated. It is characterized by being able to.

[0006]

According to the present invention, the fixed wheels provided between the front and rear free wheels maintain the straightness of the movable bed without lateral displacement when it is in contact with the ground and fixed wheels. Is located at the center of the bed, the bed can be turned around freely with the center as the fulcrum. Further, if the fixed wheel is floated above the floor surface, the bed can be moved right beside by the action of the free wheel.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, a movable wheel (2) is attached to the front and rear of the moving bed (1), and fixed wheels (3R) (3L) are attached to the center of the movable wheel (2) in the longitudinal direction. ing.

The fixed wheels (3R) (3L) are attached to an arm (6) connected by a shaft (5), and the tip of the arm is supported by an elevating device (4).

The lifting device (4) can move the fixed wheels (3R) (3L) connected to the lifting device (4) up and down by operating the handle (7).

When the fixed wheels (3R) (3L) are lowered by an elevating device and grounded to the floor surface, the moving bed can maintain straightness due to the fixed wheels (3R) (3L).

When the direction of the moving bed is changed,
The direction can be changed using the center of the bed as a fulcrum.

When the moving bed is to be moved in the lateral direction, the handle (7) is operated to move the lifting device (4).
If the fixed wheels (3R) (3L) are separated from the floor surface via the, the movable bed will be supported only by the swivel wheels (2), and can be freely moved in the lateral direction and in any other directions. It can be moved.

[0013]

According to the present invention, by the action of the fixed wheel provided in the middle of the free wheel equipped on the moving bed, the straight running performance can be improved without impairing the direction changing performance of the bed, and By lifting the fixed wheels from the floor by the lifting device, only the free wheels are supported, and the wheels can be moved in all directions.

[Brief description of drawings]

FIG. 1 is a front view of an apparatus according to an embodiment of the present invention.

2 is a side view of the device of FIG. 1. FIG.

FIG. 3 is a plan view of the device of FIG.

[Explanation of symbols]

 1 Mobile Bed 2 Flexible Wheel 3R Fixed Wheel 3L Fixed Wheel 4 Lifting Device 5 Axis 6 Arm 7 Handle

Claims (2)

[Claims] 1. A device for improving straight-ahead traveling performance without impairing the direction-changing performance by mounting fixed wheels on a movable bed equipped with free wheels. 2. The fixed wheel according to claim 1, wherein the fixed wheel is capable of exerting its straight-ahead traveling performance when it is in contact with the ground and is not affected by it when not in contact with the ground. Lifting device.