JPH04108525U - Mobile bed conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] Propel and steer a mobile bed with a minimum of one person. [Structure] The primary coil 4 of the linear induction motor for propulsion is installed in the movable bed body 1, the secondary coil 3 of the linear induction motor is buried in the floor 2 of the passage,
The movable bed body 1 is made to move by itself through the interaction of the primary coil 4 and the secondary coil 3 of the linear induction motor. Casters 5 and 6 provided on a movable bed body 1 are of a steering type, and the steering direction of the casters 5 and 6 is changed by steering drive means 7 and 8. The propulsion/steering operation means 12 controls the output voltage and frequency of the inverter 10 that supplies power to the linear induction motor, and also controls the steering drive means 7 and 8. [Effect] Propulsion and steering of the movable bed main body 1 can be performed by one person, and labor saving and efficiency can be achieved.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a mobile bed used to transport patients in hospitals and other facilities. This is related to de.

0002

[Conventional technology]

The transport of mobile beds used to transport patients in hospitals and other facilities is At least one person should stand in front of and behind the movable bed, and stand in front of the movable bed. A person located near the end steers the mobile bed, and a person located at the rear of the mobile bed The person who does this will be the one who will promote the mobile bed.

0003 FIG. 5 is a schematic diagram showing this situation. In FIG. 5, 51 is the movable bed main body , 52 is a movable caster provided at the front of the movable bed main body 51, and 53 is a movable caster provided on the front part of the movable bed main body 51. These are fixed casters provided at the rear of the main body 51. 54 is the movable bed main body 51 The person standing near the front end of the steering wheel, 55, is at the rear of the movable bed main body 51. This person is standing and pushing the movable bed main body 51. 56 is for access to hospitals and other facilities. It is a ro (corridor).

0004

[Problem that the idea aims to solve]

Conventional movable beds are propelled and steered by human power. Therefore, at least two people are required to transport one mobile bed. place However, in hospitals, etc., labor saving and efficiency improvements are desired due to a shortage of manpower. Therefore, the purpose of this invention is to carry out propulsion and steering operations with a minimum of one person. An object of the present invention is to provide a mobile bed transport device capable of performing the following steps.

[0005]

[Means to solve the problem]

The movable bed transport device of this invention passes along the route for transporting the movable bed. The secondary coil of the linear induction motor is buried in the road floor. Also, moving For movable beds, the lower part of the movable bed should be close to and opposite the floor of the passageway. The primary coil of the linear induction motor is installed in the part where the movable bed is installed. A steering system that has steering type casters on the body and changes the direction of the casters. A drive means is provided on the main body of the movable bed. In addition, there is a battery in the mobile bed body. At the same time, the DC power supplied from the battery is converted to AC power and the power is restored. A variable voltage/frequency inverter that supplies the primary coil of a near induction motor. A converter is installed in the main body of the movable bed to control the increase/decrease of the inverter output and also to steer the bed. A propulsion/steering operation means for controlling the drive means is attached to the movable bed body. .

[0006]

[Effect]

According to the configuration of this invention, by operating the propulsion/steering operation means, the When AC power is supplied from the converter to the primary coil of the linear induction motor, The primary coil of the linear induction motor installed in the main body of the mobile bed and the floor of the passageway By interacting with the secondary coil of the linear induction motor buried in the surface, The movable bed body automatically moves along the passage along the secondary coil of the linear induction motor. I will be running. At this time, operate the propulsion/steering operation means to control the output of the inverter. By changing the force voltage and frequency, the traveling speed of the mobile bed body was changed. You can switch forward and backward.

[0007] Also, if the passage is a T-junction or a crossroads, the linear The secondary coils of induction motors may also cross in a T-shape or cross-shape. If you want to turn left or right at a T-junction or crossroads, operate the propulsion and steering control means. The steering direction of the caster is changed by controlling the steering drive means. That's fine.

[0008]

【Example】

An embodiment of this invention will be described based on FIGS. 1 to 4. FIG. 1(a) is a schematic side view showing the structure of this mobile bed conveyance device, and FIG. 1(b) Figure 2 is a schematic front view showing the structure of the mobile bed conveyance device, and Figure 2 shows the flat floor of the aisle. 3 is a plan view of the propulsion/steering operation means.

[0009] In these figures, 1 is the main body of the movable bed, 2 is the floor of the passageway, and 3 is the obstruction to traffic. The linear inductor was buried with its surface exposed on the floor 2 of the aisle to prevent damage. This is the secondary coil of the action motor, and is made of an aluminum plate, for example. A guideway 3a is installed at the difference so that drivers can go straight, turn right, and turn left without any problems. ing. 4 is arranged in a portion of the lower passage of the movable bed main body 1 that is close to and opposite to the floor surface 2. This is the primary coil of the installed linear induction motor. 5 is the movable bed body Steering type casters (front wheels) installed at 1, 6 installed at movable bed body 1 It is a steering type caster (rear wheel).

0010 7 is a steering wheel including a stepping motor that changes the steering direction of the front wheel casters 5; 8 is a drive means for steering the rear wheel casters 6 in exactly the opposite direction to the front wheel casters 5. The steering drive means includes a stepping motor that changes the It is attached to the movable bed body 1. 9 is a bag installed on the movable bed body 1. 10 is a DC power supply provided in the movable bed body 1 and supplied with power from the battery 9. Converts the power into AC power and supplies it to the primary coil 4 of the linear induction motor. This is a variable voltage/frequency inverter, and these are stored in a storage case 11. It is fixed to the movable bed main body 1 in this state.

[0011] 12 controls the increase/decrease of the output of the inverter 10 and also controls the steering drive means 7 and 8. A spring cord 13 is attached to the movable bed body 1 by the propulsion/steering operation means to control. are connected via. The propulsion/steering operation means 12 is shaped as shown in FIG. At the center of the box-like body 12b connected to the tip of the handle 12a, there is a It has a structure in which a freely adjustable operating lever 12c is provided protrudingly.

0012 Note that in FIG. 1(a), arrow A indicates the traveling direction. In addition, especially Although not included, this movable bed body 1 is equipped with an emergency stop brake. It is designed to ensure safety. Next, the operation of this movable bed conveyance device will be explained. When the operating lever 12c is tilted forward, the inverter 10 operates and the movable bed main body 1 When the control lever 12c is pushed forward and the control lever 12c is pushed back, the inverter 10 operates and the movement is started. The movable bed main body 1 is moved backward. At this time, the inclination of the operating lever 12c increases. As the voltage and frequency of the inverter 10 increases, the movable bed main body 1 moves. The speed will be higher.

[0013] At this time, when the inverter 10 is operating, the movable bed main body 1 It runs along the secondary coil 3 of a linear induction motor buried in the floor 2 of , the movable bed main body 1 will not come off from above the secondary coil 3, so the control panel is always on. It is not necessary to perform a steering operation by moving the bar 12c left and right. Also for this reason , even if the path is slightly curved, the secondary coil 3 installed according to the curve will Since the movable bed main body 1 moves, steering operations are extremely easy. Two Therefore, you only need to use the steering wheel when making a right or left turn.

[0014] Note that when the operating lever 12c is in the neutral state, the operation of the inverter 10 is stopped and the movement is stopped. The movable bed main body 1 runs by inertia and then stops. In addition, it is running by coasting. It does not run along the secondary coil 3. Moreover, when the operating lever 12c is tilted to the left, the steering drive means 7 and 8 are operated, and the Change the rudder direction of casters 5 and 6 for all four wheels so that the movable bed body 1 can turn left. let Conversely, when the operating lever 12c is tilted to the right, the steering drive means 7 and 8 operate. Then, so that the movable bed main body 1 can turn right, the rudder direction of the casters 5 and 6 is adjusted to match the four wheels. also change. At this time, the rotation angle of the casters 5 and 6 in the rudder direction is determined by the operating lever 12. As the slope of c increases, the control lever 12c becomes in a neutral state. It will return to its original state. In addition, when making a right or left turn while driving forward, While tilting the operating lever 12c forward, tilt it to the right or left. Turn right/left when reversing , tilt the operating lever 12c backward and then tilt it to the right or left.

[0015] Although not shown inside the box-like body 12b, there is a device connected to the operating lever 12c. A switch element for controlling the inverter 10 and the steering drive means 7 and 8. A variable resistor, etc. is housed in the control lever 12c, and the connection is made depending on the inclination angle of the operating lever 12c. The structure is such that the point opens and closes or the resistance value changes; Alternatively, the change in resistance value can be applied to the movable bed body 1 through the spring cord 13. A control circuit (not shown) controls the inverter 10 and the steering drive means 7 and 8. (2).

[0016] FIG. 4 is a block diagram showing an example of the configuration of the electric circuit of the mobile bed conveyance device. . In FIG. 4, 21 and 22 are stepping motors, and 23 and 24 are stepping motors. This is a motor driver that drives the motor. 25 is inside the propulsion/steering operation means 12. The output is activated according to the resistance values of variable resistors 31 and 32 which are stored in the control lever 12c and are linked to the operating lever 12c. A control that controls the output voltage and frequency of the inverter 10 and the voltage phase that determines the running direction. It is a control circuit. Reference numeral 26 indicates an operating lever 12c built into the propulsion/steering operating means 12. The stepping motors 21 and 2 operate according to the resistance values of the variable resistors 33 and 34 that are linked to the This is a control circuit that controls the rotation of 2.

[0017] According to the mobile bed conveyance device of this embodiment, linear induction for propulsion The primary coil 4 of the motor is installed in the movable bed body 1, and a linear inductor is installed. The secondary coil 3 of the induction motor is buried in the floor 2 of the passageway, and the linear induction motor is The movable bed body 1 moves by itself through the interaction of the primary coil 4 and secondary coil 3 of the motor. At the same time, the casters 5 and 6 provided on the movable bed main body 1 are The steering direction of the casters 5 and 6 is changed by the steering drive means 7 and 8. The propulsion/steering operation means 12 supplies power to the linear induction motor. In addition to controlling the output voltage and frequency of the inverter 10 that generates electricity, the steering drive means 7 and 8, the propulsion and steering operations of the movable bed body 1 are controlled. The work can be done with a minimum of one person, achieving labor savings and efficiency. Wear. In addition, since there is almost no need for steering operations, you can pay close attention to the patient's condition. can be directed.

[0018] In addition, in this mobile bed conveyance device, the movement of the mobile bed main body 1 is linearly controlled. It uses a induction motor, and its propulsive force is large, so it can be used in hospital corridors, etc. It can be used without any problem even in passages with many slopes. In addition, for driving linear induction motors and stepping motors. Although the circuit shown in FIG. 4 is taken as an example of the circuit configuration, the circuit configuration is not limited to this. stomach.

[0019]

[Effect of the idea]

According to the mobile bed transfer device of this invention, a linear induction motor for propulsion is used. The primary coil of the motor is installed in the main body of the movable bed, and linear induction The secondary coil of the motor is buried in the floor of the passageway, and the primary coil of the linear induction motor is The movable bed body is moved by the interaction of the coil and secondary coil. At the same time, the casters installed on the main body of the movable bed are of a steering type, and the steering drive is The steering direction of the caster is changed by the driving means, and the propulsion/steering operation means controls the output voltage and frequency of the inverter that supplies power to the linear induction motor. At the same time, since the steering drive means is controlled, the movement of the movable bed body is controlled. Propulsion and steering operations can be performed by a minimum of one person, resulting in labor savings and efficiency. can be achieved.

[Brief explanation of drawings]

FIG. 1(a) is a schematic side view showing the structure of a movable bed conveying device according to an embodiment of the invention, and FIG. 1(b) is a schematic front view showing the structure of the movable bed conveying device.

FIG. 2 is a plan view of a passageway corridor.

FIG. 3 is a plan view of the propulsion/steering operation means.

FIG. 4 is a block diagram showing an example of the configuration of an electric circuit of the mobile bed conveyance device.

FIG. 5 is a schematic diagram showing a transportation pattern of a conventional movable bed.

[Explanation of symbols]

1 Mobile bed body 2 Floor of aisle 3 Secondary coil of linear induction motor 4 Primary coil of linear induction motor 5,6 Casters 7,8 Steering drive means 9 Battery 10 Inverter 12 Propulsion/steering operation means 13 Spring cord

Claims (1)

[Scope of utility model registration request] 1. A secondary coil of a linear induction motor is buried in the floor of a passageway along a path for conveying the mobile bed, and the linear A primary coil of an induction motor is provided, a steering type caster is provided on the movable bed main body, a steering driving means for changing the steering direction of the caster is provided on the movable bed main body, and the movable bed main body is provided with a steering drive means for changing the steering direction of the caster. A battery is provided, and a variable voltage/frequency inverter is provided in the movable bed main body to convert DC power supplied from the battery into AC power and supply it to the primary coil of the linear induction motor, and the output of the inverter is A movable bed conveyance device comprising a propulsion/steering operation means attached to the movable bed main body for controlling an increase or decrease of the steering drive means and controlling the steering drive means.