JPH0331659Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a bed transport device used for transporting medical beds, etc.
This invention relates to a bed conveying device that engages with the lower part of the bed and is movable in all directions.

[Conventional technology]

Beds used for medical purposes are generally of the stationary type, while those of the movable type are equipped with wheels, casters, etc. on the legs so that they can be pushed and moved by human power.

[Problem that the invention attempts to solve]

Of the above-mentioned beds, it is difficult to move them manually, not only the fixed ones but also the mobile ones.In particular, moving a sick person while holding them requires a large number of hands and requires a large space to move. There was a problem that it required .

This invention is intended to solve the above-mentioned problems, and provides a bed transport device that can easily and safely transport a bed to any location using a narrow space even when a patient is accommodated. The purpose is to

[Means for solving problems]

This invention consists of a bed that has a lower part that engages with a trolley and a caster for movement in the leg parts, a vehicle that can be entered under the bed, and a vehicle that is installed on both the front and rear sides of the vehicle and each driven by separate motors. 4 drive wheels with adjustable rotation direction and rotation speed;
A freely rotatable rotary body is provided on the outer periphery of each drive wheel at an angle with respect to the axle so that the directions are opposite between adjacent drive wheels, and a rotating body that can be rotated freely is provided on the outer periphery of each drive wheel so as to be inclined with respect to the axle so as to be in opposite directions between adjacent drive wheels. It includes a cart having a lift to be pulled, a control device that controls the rotational direction and rotational speed of each of the motors via a motor driver in response to a signal from the Joy States lever, and a portable operation box provided with the Joy States lever. This is a bed transport device in which the bed is pulled by a cart and moved by casters.

[Effect]

In the bed conveyance device of this invention, the rotation direction and rotation speed of the four drive wheels of the truck can be adjusted independently by operating the joy states lever provided in the portable operation box. It is possible to run straight or curve in any direction, left, right or diagonally, as well as turn. This makes it possible to travel to any location using a narrow space.

Therefore, the cart is moved into the lower part of the bed, and in this state, the lift is raised to engage with the engaging portion. When the cart is driven to a desired location in this state, the bed is towed by the cart and moved by the casters.Then, when the lift is lowered and the cart is carried out, conveyance of the bed is completed. This operation can be performed easily and safely even when the patient is in bed.

〔Example〕

Examples of this invention will be described below. Fig. 1 is an exploded perspective view showing an embodiment of this invention, Fig. 2 is a bottom view, Fig. 3 is a front view of the drive wheel, Fig. 4 is a plan view thereof, and Fig. 5 is a block diagram of the control device. ,
FIG. 6 is a perspective view of the operation box.

In the figure, reference numeral 1 denotes a bed, which has an engaging member 2 having an engaging claw 2a at its lower part, and a caster 4 at the tip of a leg 3. Reference numeral 5 denotes a trolley, which has four drive wheels 7 on both front and rear sides of a chassis 6 that can enter between the legs 3 at the bottom of the bed 1, and a lift 8 on the top of the chassis 6. The lift 8 is formed with an engagement recess 8a that can be engaged with the engagement claw 2a of the engagement member 2.

Driving wheel 7 is Special Publication No. 55-50830 and Special Publication No. 57
-16001 etc., as shown in Figs. 2 to 5, a large number of rotating bodies 9 are arranged around the outer periphery and rotate freely at an angle of 30 to 60 degrees, preferably approximately 45 degrees, with respect to the axle 10. The driving wheels 7 are provided so that the directions of inclination are opposite between adjacent drive wheels 7. The rotating body 9 is attached to a bracket 14 extending from the wheel body 13. Each drive wheel 7 is connected to a motor 15 via a reducer so that forward and reverse rotational directions and rotational speeds can be adjusted independently. It's becoming manipulated.

As shown in FIG.
A motor driver 19 is connected to supply power from the motor to control the rotation direction and rotation speed of each of the four motors 15, and a signal from the steering lever 17 is amplified by an amplifier 20 and input to the motor driver 19. It's summery. The joy states lever 17 is generally used for remote control, and when the lever 17 is tilted in the XY or intermediate directions, the cart 5 moves straight in the direction in which the lever 17 is tilted, and when turned in the Z direction, it turns in that direction. , and 3 potentiometers 21 that output signals in the XYZ directions so that when turned in the folded state, it will run in a curve.
have. 22 is an operation switch provided in the operation box 16.

In the above configuration, the joy states lever 17 is operated to send a signal to each drive wheel 7 of the bogie 5.
By adjusting the rotation direction and rotation speed of the trolley 5,
The vehicle can run straight forward, backward, left, right, diagonally, in curves, and turn.

To operate the joy states lever 17, tilt it in the XY or intermediate direction, or rotate it in the Z direction.
Potentiometer 21 outputs signals in the XYZ directions. This signal is amplified by the amplifier 20 and input to the motor driver 19, where a signal is issued to adjust the rotational direction and rotational speed of each motor 15, and the power supply from the battery 18 is controlled.

Then, operate the joystick lever 17 to move the cart 5 between the legs 3 at the bottom of the bed 1, position the lift 8 under the engagement member 2 attached to the bottom of the bed 1, and turn the operating switch 22. When the lift 8 is raised by
a, the bed 1 is moved to the carriage 5 via the lift 8.
engage with. In this state, if you operate the joy states lever 17 to change the rotational direction and rotational speed of the drive wheels 7 and move the trolley 5 to a desired location,
The bed 1 is towed by a truck 5 and moved by casters 4. At the destination, the lift 8 is lowered to disengage the engagement member 2 and exit from the lower part of the bed 1, thereby completing the conveyance.

The above operations can be easily performed by a patient or a nurse, and the patient can be transported even if the patient is accommodated in Bed 1. Bed 1 can be easily and safely transported in any direction or location using a narrow space. be done.

In the above explanation, if the bed 1 has an engaging portion, it is not necessary to attach the engaging member 2. Further, the control device is not limited to the one shown in the drawings, and can be changed by operating a joystick lever provided on a portable operation box.

[Effect of idea]

According to this invention, the bed is equipped with casters and engaged with a trolley to be pulled, so it can be transported with less driving force than when transporting by lifting the bed, and the center of gravity can be adjusted depending on whether a patient is being accommodated or not. Uneven beds can be safely transported in a stable state. In addition, we have installed a drive wheel with a rotating body on the outer periphery, so you can utilize narrow spaces and
The bed can be easily and safely transported to any location. Furthermore, each drive wheel is controlled by operating a joystick lever provided on a portable operation box, so that the sick person in the bed can also move the bed by operating it himself. Furthermore, since each drive wheel is driven by a separate motor, the control mechanism is simplified compared to the case where the drive wheels are driven by a single motor. Since the engaging portion is provided at the lower part of the bed, it is possible to stably pull the bed in any direction with the trolley.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing an embodiment of this invention, Figure 2 is a bottom view, Figure 3 is a front view of the drive wheel,
FIG. 4 is a plan view thereof, FIG. 5 is a block diagram of the control device, and FIG. 6 is a perspective view of the operation box. In each figure, the same reference numerals indicate the same parts, 1 is the bed, 2 is the engaging member, 4 is the caster, 5 is the trolley, 6 is the
is the chassis, 7 is the drive wheel, 8 is the lift, 9 is the rotating body,
15 is a motor, 16 is an operation box, 17 is a joystick lever, and 19 is a motor driver.

Claims (1)

[Scope of utility model registration request] A bed has a lower part that engages with a trolley and a leg part that has casters for movement, a vehicle platform that can be entered at the bottom of the bed, and motors provided on both the front and rear sides of the vehicle platform that control the direction of rotation and rotation. Four drive wheels with adjustable rotational speeds, a freely rotatable rotating body installed on the outer periphery of each drive wheel at an angle with respect to the axle so that adjacent drive wheels are in opposite directions, and a rising a trolley having a lift that engages with the engaging portion to pull the bed; a control device that controls the rotational direction and rotational speed of each of the motors via a motor driver based on a signal from a joystate lever; Equipped with a portable operation box equipped with a clever lever,
A bed transport device that pulls the bed with a cart and moves the bed with casters.