JP2001087315A - Electromotive transfer truck and drive wheel set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromotive transfer truck having a sufficiently low base plate and enabling a disabled or old person to easily to get on and off, an electromotive truck facilitating work at a standing position and a general-purpose inexpensive electromotorive transfer truck and a drive wheel set easily attached to an existing truck. SOLUTION: In an electromotive transfer truck, the wheel support frame 3 for supporting an electromotive drive wheel 2 is connected to the central part 1 of a truck base plate by a connection member 12 so as to load the electromotive drive wheel with a weight 1/2 or more the total weight of a truck at the central part 1 of the truck base plate and the attaching height of the wheel support frame is regulated by the connection member 12. A wheel driving motor 4, a battery 5 thereof and a motor control device 6 are mounted on the wheel support frame 3. Three or more non-drive universal wheels 7 are provided to the peripheral edge part of the truck base plate at positions surrounding the electromotive drive wheel 2 so as to stabilize the truck base plate on a floor. The operation of the wheel driving motor 4 is performed by the transmission and reception of a radio signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric trolley, an electric bed, an electric wheelchair, a leisure electric board, and a driving wheel set thereof.

[0002]

2. Description of the Related Art A conventional electric trolley is for carrying luggage. Cars, wheelchairs and carts for carrying people are all driven by wheel drive and wheel braking mechanisms, so the height of the wheels and their frames and floorboards increases, making it difficult for people with disabilities to get on and off their own. However, the danger was high for leisure use, and the range of application and diversion was narrow in spite of the high price.

[0003]

SUMMARY OF THE INVENTION The present invention relates to an electric transfer cart having a sufficiently low floor board, that is, a cart base, and capable of easily getting on and off a physically handicapped person and an elderly person, and an electric transfer cart that is easy to work in a standing position. It is an object of the present invention to provide a general-purpose inexpensive electric transition cart and a drive wheel set that can be easily attached to an existing cart.

[0004]

Means for Solving the Problems 1 The present invention solves the problems by being configured as follows. That is, as shown in FIGS. 1 to 7, a wheel support for supporting the electrically driven wheels 2 so that one or more electrically driven wheels 2 are loaded on one electrically driven wheel 2 in the bogie substrate center portion 1. Frame 3 is connected to connecting member 12
To the center part 1 of the truck substrate, and to adjust the mounting height by the connecting member 12, and mount the wheel driving motor 4, its battery 5, and the motor control device 6 to the wheel supporting frame 3. And mounting three or more non-driving vehicles 7 at a position surrounding the electric drive wheels 2 around the periphery of the truck substrate and stabilizing the truck substrate on the floor. A driving operation is performed by a radio signal transmission / reception.

The bogie substrate center portion 1 refers to a bogie substrate portion substantially at the center of the shape of the plate-like structure serving as the substrate of the bogie or at the position of the center of gravity, and has the same height as the bogie substrate or a height such that it can be seated. When a liquid or granular material is loaded on the truck, the periphery of the truck can be higher than the center of the truck. The carriage substrate is a strength member such as a chassis, and has a function as a floor plate or a container. In the present invention, it is preferable that the upper surface of the bogie board is extremely low, about 20 to 100 mm from the floor or the ground, so that it is convenient for getting on and off and loading and unloading. The number of the electrically driven wheels 2 is limited to one to simplify the structure, reduce the weight, and improve the turning performance. A twin wheel in which two wheels are closely attached to each other and supported on an axle therebetween at one place is regarded as one, and is included in the scope of the present invention. A motor 4 for driving a wheel, its battery 5 and a motor control device 6 are mounted on a driving wheel support frame 3. That is, all of these drive systems are not on the truck substrate 1 but on the wheels, the wheel support frame 3 supporting the wheels, and the rolling member 12. It is best that the electric drive wheels 2 and the like are mounted on the carriage board at a position slightly forward of the center of gravity. At the periphery of the truck substrate, three or more non-driving vehicles 7 surround the electrically driven wheels 2 at the center of the truck substrate and stabilize the truck substrate on the floor.
Attach. That is, the electrically driven vehicle is included in the polygon that connects the adjacent non-driving vehicles with straight lines. The non-driving vehicle is a non-driving vehicle that can follow and freely change directions, such as a caster in which the axle and the direction turning center axis are shifted, as is customary.

[0006] It is best to mount the motor coaxially on the axle with a small motor having a planetary speed reducer that generates a large torque. FIGS. 2, 4, 6 and 7 show examples of partial cross-sectional views in which a motor and a planetary gear reducer are coaxially mounted on the axle inside the wheel, and FIG. 5 shows a wheel driving motor. 4 shows an example in which the reference numeral 4 protrudes from the wheel and is coaxially mounted on the axle. It is also possible to mount the planetary reduction mechanism in two stages, or to use a gear position fixed type reduction mechanism other than the planetary type. In addition, a motor that does not use a speed reducer can be used, but in this case, the generated torque is reduced or the diameter is increased, so use is limited when the center of the substrate is raised as shown in FIGS. Is done. In order to minimize the height of the entire bogie, a motor incorporating a one-stage or two-stage planetary reducer is most recommended. This reduction gear is not limited to a gear, but rather a gear using a friction wheel is preferable in terms of cost reduction and noise.

The direction change of the electric drive wheel 2 can be performed by turning the wheel supporting frame and the wheel around the vertical turning axis 27 by human power or electric power. In the case where the electric drive wheel is turned by human power to change the direction, the bogie board central part which turns integrally with the wheel is configured to be rotatable with respect to the surrounding bogie board, and in the case of sitting on this part, In the case of a standing position, the user can turn and steer with his feet. In the case where the motorized wheels are turned and steered by a motor in accordance with a radio command, the center of the bogie substrate is integrated with the surrounding bogie substrate, and the wheel supporting frame 3 rotatably mounted on the central portion of the bogie substrate is rotated by the direction changing motor 13. Can be swiveled. 1 and 2, the pinion gear 14 of the direction changing motor 13 vertically mounted on the wheel supporting frame 3 meshes with the internal gear whose rotation is fixed, and FIGS. 4 and 5 show the surface where the rotation is fixed. Wheel support frame 3 for gears
And the pinion gear 14 of the direction changing motor 13 is meshed. In each case, the entire drive system including the motor, battery, control device, and the like turns. This turning angle is free because there is no wiring to the outside, but the turning stop position of the electrically driven wheels can be selected from two directions, that is, the direction in which the wheels are directed in the front-back direction and the direction in which the wheels are turned in the left-right direction. Is recommended to prevent confusion in driving operation. In this turning method, the driving wheel turns to change the direction, but the traveling direction and the direction of the bogie substrate are not limited. The bogie board does not turn or turns slightly in the opposite direction to the wheels due to the reaction. To turn the carriage board in the desired direction, move the weight toward the center of the turn,
Use the brakes described below. In the present invention, when the turning of the wheels is fixed, the wireless driving operation can be switched to the wired driving operation.

[0008] When a brake is mounted on the electrically driven wheel 2, when the brake button switch of the wireless transmitter is pressed, the motor drive power supply is cut off according to a predetermined current reduction curve, and the wheel brake is activated at a predetermined current or less. It is good to be constituted so that operation may be started. Further, it is preferable that when the start switch of the wireless transmitter is pressed, the wheel brake is released and the motor drive current rises to a predetermined value according to a predetermined current rise curve. Since the motor is a DC motor, the wheel drive motor can be used as a generator during deceleration to exert a braking effect.

[0009]

Operation 1 In the center portion 1 of the carriage substrate, the wheel supporting frame 3 supporting the electric drive wheels 2 is connected to the connecting member 1 so that one electric drive wheel 2 is loaded with １ ／ or more of the total weight of the carriage.
2 and connected to the bogie substrate center 1 by this connecting member 12
By adjusting the mounting height and mounting
Effective drive with a minimum number of drive wheel configurations and a change of direction without turning the wheels. The wheel driving motor 4 and its battery 5 are mounted on the wheel supporting frame 3 and the connecting member 12.
By installing the motor control device 6 and the floor board, the board is sufficiently low, and the physically handicapped and the elderly can easily get on and off the electric transition trolley. Power supply wiring can also be eliminated.
Three or more non-driving vehicles 7 are mounted on the periphery of the truck substrate at positions surrounding the electric drive wheels 2 to stabilize the truck substrate on the floor. This makes it easy for a person to get on and off the vehicle, so that even if a person steps on the edge of the lightweight substrate, problems such as jumping up of the substrate can be minimized. Also for leisure use, the risk of a person hitting a projection such as a wheel when the vehicle is hit by or falls over can be reduced, and safety can be improved.

In the present invention, it is possible to change the direction and the traveling direction of the bogie board by shifting the weight or operating the brake. However, if the steering wheel is operated by turning the drive wheel 2 with human power or an electric motor, the steering wheel can be properly adjusted. You can change the direction of travel. In order to make the direction of the carriage board follow the traveling direction, the weight may be shifted rearward, or the electrically driven wheels may be arranged in advance ahead of the center of gravity of the vehicle body. Therefore, the steering device can be omitted or simplified in the present invention. When the electric motor is used for the direction change, the electric drive wheel 2 is supported by the connecting member 12 and is capable of turning around the vertical turning shaft 27, and the wheel driving motor is mounted on the wheel support frame 3 integrated therewith. Since the battery 4, the battery 5, and the motor control device 6 are connected and mounted, there is no twist of the electric wiring due to the turning, and troubles such as poor contact of the electric system can be reduced. And the whole drive system is integrated with the drive wheels, so that the size and weight can be reduced.
IY construction also becomes easy. Since these driving operations are configured to be performed by wireless signal transmission and reception, troubles such as disconnection and poor contact can be reduced, and operation can be performed even at a remote position, so that the degree of freedom of action can be improved. As described above, since all of the drive mechanisms are integrated with one electric drive wheel, it is possible to easily add this drive portion to an existing bogie to make it electric.

Preferably, when braking the electrically driven wheels 2,
When the brake button of the wireless transmitter is pressed, the motor drive power supply is cut off in accordance with a predetermined current reduction curve, and the control means is configured so that the wheel brake starts operating at a predetermined current or less. When the start button of the wireless transmitter is pressed, the wheel brake is released and the motor drive current is increased to a predetermined value according to a predetermined current increase curve. In this way, sudden start and sudden stop can be prevented, and the fall of the operator and the bruise on the frame can be prevented. In addition, this control means can prevent an excessive torque from acting on the drive system, so that the drive system can be reduced in size and weight. If the current reduction curve is configured so that it can be selected and set according to the user's preference, the delay between the braking operation and the prevention of the driver from falling can be balanced.

[0012]

Embodiment 1-1 As shown in FIGS. 1 to 7, in the center part 1 of a bogie substrate, one electric drive wheel 2 is loaded with a half or more of the total weight of the bogie so as to load it. 2
Is connected to the bogie substrate center part 1 by a connecting member 12, and the mounting height is adjusted by the connecting member 12, and the wheel supporting motor 3 is mounted on the wheel supporting frame 3. The battery 5 and the motor control device 6 are mounted, and three or more non-driving vehicles 7 are provided on the periphery of the bogie substrate at positions surrounding the electric drive wheels 2 to stabilize the bogie substrate on the floor. And preferably, the electric drive wheel 2 is supported by the connecting member 12 integral with the wheel support frame 3 so as to be capable of turning around the vertical turning shaft 27. A driving operation is performed by a radio signal transmission / reception.

The position of the load on the truck, the rigidity of the truck substrate, and the mounting height of each wheel on the truck are selected in advance so that more than half of the total weight is supported by the electrically driven wheels 2. The height may be selected by mounting a height adjusting member 37 between the wheel support frame 3 and the connecting member 12. This height adjusting member preferably uses three or more cylinder expansion / contraction mechanisms, and a spring or a fluid pressure cushion is attached to these expansion / contraction mechanisms. It is advisable to adjust so that the load acts. In order to prevent the cushion stroke from becoming too large, it is preferable to apply a prestress of less than 1/2 of the full load to the cushion. With this configuration, the turning property and the propulsion property are excellent, and the floating of the non-driving vehicle can be prevented. Here, the cylindrical expansion / contraction mechanism is a telescopic type expansion / contraction mechanism called telescopic or telescopic, and it is preferable that the length of expansion / contraction can be fixed or limited by a screw or a pin.

The electrically driven wheel 2 is made of an elastic material such as a pneumatic tire or the like, or a spring is interposed in a wheel supporting portion, so that even when the height of the bogie substrate changes due to a load, the bogie substrate is simultaneously elastically deformed and is not driven. It is preferable that the load ratio to the vehicle does not exceed 1/2. With this configuration, even when all the wheels have the same coefficient of floor contact friction and the non-driving vehicles are all sideways and do not turn in the traveling direction, the bogie can be advanced by driving the electric drive wheels 2. become able to.
When the bogie begins to move, the non-driving free wheel is oriented in the direction of travel, and the resistance is reduced. If the tire of the electric drive wheel 2 is made of a material having a large friction coefficient such as rubber and the tire portion of the non-driving vehicle is made of a material having a relatively small friction coefficient such as a polymer material, the slip of the electric drive wheel can be further reduced. Sufficient propulsion is obtained and the transition is facilitated. Further, even if the electric drive wheel 2 cannot turn for the direction change, if more than half of the total weight is applied to the electric drive wheel, the turn by the brake operation or the weight shift becomes easy.

At the time of charging, the bogie substrate is lifted or the charging window 28 of the bogie substrate or a part of the central protrusion thereof is opened to connect the battery terminal and the charging source. Preferably, the charging slip ring 2 is provided between the vertical turning shaft 27 and the carriage board 33.
Exposing the charging terminal electrically connected in step 6 to the bogie board surface,
This is configured to be connected to a charging source. When a large current for driving is passed through the slip ring during running, a contact failure trouble is likely to occur, but charging is performed in a stationary state and the current is small, so there is almost no problem.

[0016]

Embodiment 1-2 As shown in FIGS. 1 to 3, this is an example described in Embodiment 1-1, in which the central portion of the substrate is raised to a size and shape suitable for a chair. In this example, a person can drive while sitting on the central ridge.

[0017]

Embodiment 1-3 A structure in which an electrically driven wheel 2 is supported by a connecting member 12 and is capable of turning around a vertical turning axis 27,
A wheel driving motor 4, a direction changing motor 13, their batteries 5 and a motor control device 6 are mounted on a wheel supporting frame 3 integrated therewith.
Is attached. In addition, the driving operation is performed by wireless signal transmission / reception. The attitude of the wheel support frame 3 and the direction changing motor 13 can be a vertical type as shown in FIGS. 1 to 3, or a horizontal type as shown in FIGS.

[0018]

Embodiment 1-4 As shown in FIG. 4, the embodiment 1-1 or 1-3 in which the central portion of the substrate is slightly raised or not raised.
Examples in the section. This example is suitable for a person who runs while sitting upright in the center with his upper body up.

[0019]

Means for Solving the Problems A plurality of brakes 8 which are pressed on the floor to apply a brake to the periphery of the bogie board are mounted, and these adjacent brakes are connected to each other by a cable body 9.
In the case where a person sitting on the bogie substrate center 1 or standing on the bogie substrate is allowed to extend to a position where the rope body 9 can be gripped by hand in that posture, and if the rope body 9 is not towed, the brake is used. 8. The electric transfer vehicle according to claim 1, wherein the electric transition carriage is configured to restore the non-braking position by gravity or a spring force. The cord 9 extends from the brake 8 to a position where it can be easily gripped, such as a bridle. This cord is a rope, string or band that is easy to hold.

[0020]

[Function 2] A plurality of brakes 8 are applied to the periphery of the bogie board to press and brake on the floor, and the brakes are operated by pulling with the rope body 9 hands, so that the braking mechanism can be simplified and the bogie board can be lowered. Is easier to do. In addition, since the cable body has both ends connected to the brake, its position is restrained, it is easy to take off from the fixed position, it is easy to operate two brakes at the same time, and it is easy to brake and change direction become. When the electric drive wheel motor is switched on, the electric transfer cart can run and the brake can change direction and brake. Even if the bogie board does not turn the steering wheel, that is, does not try to change the direction of the wheels, it is possible to change the direction of the board without changing the traveling direction by simultaneously operating the brake and drive wheel directions. become able to.

[0021]

Embodiment 2-1 The upper center of the substrate is a rotary seat that can be turned integrally with the wheel support frame, and the direction of the electrically driven wheels can be determined by the shape or coloring of the seat.
Embodiments 1-1 to 1 in which the electric drive wheel 2 is configured to be able to turn around the vertical turning shaft 27 by turning this portion while sitting or standing and standing on the foot.
An electric transition cart according to item 4. In this example, a person can change the direction by rotating the chair while sitting on the chair. Further, a plurality of brakes 8 which are pressed on the floor and braked are mounted on the periphery of the bogie board, and a rope body 9 for operating these brakes is provided.
By connecting adjacent brakes to each other, a person sitting on the truck substrate center 1 or standing on the truck substrate extends to a position where the rope body 9 can be gripped by hand with that posture,
And when the brake 8 does not tow the rope 9,
An electric transition vehicle characterized by being configured to restore to a non-braking position by gravity or spring force.

[0022]

Embodiment 2-2 As shown in FIGS. 1 and 3, adjacent brakes are connected by a rope, and an operation switch 10 for wirelessly instructing a motor control device is mounted on the rope 9. It is an electric transition carriage described in the embodiment 2-1. In this example, the rope can be used as a brake rein and the operation switch can be pulled to a position where it can be easily operated. If the fixed operation switch 11 is mounted, the driving operation is further facilitated. It is best that the grip portion 29 is grounded at a position where it can be easily gripped when the vehicle is running or staggered, and it is best that the emergency stop button of the fixed operation switch 11 is pressed easily.

[0023]

As shown in FIGS. 1 to 3, the frame is raised from the periphery of the bogie, and the upper beam 17 of the frame is formed as a handrail-shaped beam. A telescopic mechanism that can be adjusted to a height suitable for applying it to the armpit in a standing or sitting position, and the C-shaped or U-shaped middle beam 18 beneath it is placed on an elbow in a standing or sitting position Height that is suitable for the chair, the bogie substrate center part 1 is protruded to a size and shape suitable for a chair, and the cable body 9 equipped with the wireless transmitter is stretched around a position where it can be easily picked up in a standing or sitting position. Means for solving the problem to be solved by the present invention is an electric transfer cart according to claim 1 or 2. The cylinder expansion / contraction mechanism used here preferably has a fixed height or a limited range, and is equipped with a cushion. It is preferable to mount a similar cylinder expansion / contraction mechanism so that the height of the middle beam 18 can be adjusted. FIG. 3 shows a situation in which the carriage substrate portion cut out in a U-shape is covered with a cutout cover 38. The notch lid can be attached and detached as needed. This lid can be configured to be opened and closed manually by being connected to an electric type or a cord.

[0024]

[Effect 3] The person leans on the beam adjusted to support the armpits and elbows in the standing or sitting position, so that even a person with weak legs and legs can move and work with both hands. Since the height is slightly different depending on the person, the height can be adjusted by the cylinder expansion / contraction mechanism to improve the feeling of use. By making the middle step beam 18 in a C-shape or a U-shape, the person can be placed on the elbow while standing or sitting, and at the same time, the falling of the person can be prevented. A person can enter and exit from one of the open parts, and this part is made of a beam that can be opened and closed, or preferably, a perch 21 that rests on the buttocks in a standing position on the front and rear lower beams
If you wear the, you will be able to work with your buttocks on it, and place or suspend objects here. The center part 1 of the carriage substrate is protruded into a size and shape suitable for a chair, and the rope body 9 equipped with the wireless transmitter is stretched around a position where it can be easily picked up in a standing or sitting position. You will be able to drive. By removing the notch cover 38 from the U-shaped notched carriage substrate portion shown in FIG. 3, it becomes possible to approach a protrusion such as a toilet bowl, and the transfer to the toilet bowl or the like becomes easy by itself. If this lid is configured to be openable and closable, usability will be improved.

[0025]

Embodiment 3-1 As shown in FIGS. 1 to 3, the frame is raised from the periphery of the bogie, and the upper beam 17 of the frame is formed as a handrail-shaped beam. Includes a tubular telescoping mechanism that can be adjusted to a height suitable for applying it to the armpit, and secures this height with screws. The C-shaped or U-shaped middle beam 18 beneath it is manufactured by assuming or designating it in advance at a height suitable for a person to stand or sit and to place an elbow. Embodiment 1-1 characterized in that the bogie substrate center part 1 is projected into a size and shape suitable for a chair, and a cable body 9 equipped with a radio transmitter is stretched to a position where it can be easily picked up in a standing or sitting position. Or 1-
It is an electric transition cart described in 4, 2-1, 2-2. It is preferable to attach a similar cylinder expansion / contraction mechanism so that the height of the middle beam 18 can be adjusted.

[0026]

Embodiment 3-2 A perch 21 for resting the buttocks in a standing position is attached to the lower beam 19, and the lower beam height position of the opening of the C-shaped or U-shaped middle frame is closed. One end of the perch 21 is pivotally opened and closed about the lower beam 19 as a center of rotation, and the other end is directly connected to the opposing lower beam 19, or
Or it is an electric transition bogie described in Example 3-1 configured to be connected to a perch end extending therefrom. The perch 21 is preferably plate-shaped as shown, and at the same time, a strength member for connecting the left and right beams. Further, when connecting opposing perches at the center or when using a perch that does not reach the opposing lower beam, a perch stopper 23 that rotates integrally with the perch 21 is applied to the frame, The rotation angle is configured to be limited.

[0027]

[Embodiment 3-3] The electric transfer cart according to the embodiment 3-1 or 3-2, wherein a backrest member for connecting the curvature portion of the C-shaped or U-shaped middle frame and the perch of the lower frame is mounted. is there.

[0028]

As shown in FIG. 6, in a driving wheel set to be mounted on a trolley, a turning plate 35 is mounted so as to be rotatable by a vertical turning shaft 27 so as to face a lower surface of a trolley mounting plate 34 as shown in FIG. A wheel support frame 3 that surrounds one electric drive wheel 2 in a horizontal direction and supports a wheel drive motor 4, its battery 5, and a motor control device 6,
The mounting height is adjusted by the connecting member 12 or the height adjusting member between the two, and mounted on the revolving plate 35. The revolving lever 3 is mounted on the revolving plate 35.
6. A driving wheel characterized in that the driving wheel 6 is extended to a position where a person on the vehicle can operate the rope body connected thereto, and the driving operation of the wheel driving motor 4 is performed by wireless signal transmission / reception. It is a set. The direction change lever may be operated at any angle.However, in order to prevent driver confusion, a structure that preferentially selects a position where the drive wheels face forward and backward and a position where the drive wheels face left and right is used. good. In this case, the main direction is the front-back direction or the left-right direction, and turning in other directions is performed by shifting the weight, operating the brakes, or tilting the bogie.

[0029]

[Function 4] By configuring the drive wheel set of the present invention as means 4 for solving the problems, it is possible to easily convert a conventional non-drive truck into an electric drive truck. Facing the lower surface of the bogie mounting plate 34, the pivoting plate 35 is pivotably mounted on the vertical pivot shaft 27,
The mounting height is adjusted by the wheel supporting frame 3 or its connecting member 12 which surrounds and supports one electric driving wheel 2 in the horizontal direction, and the wheel driving motor 4 and its battery 5 By mounting the motor control device 6, the drive system can be compactly integrated, and the revolving plate 35 and the wheel support frame 3 are connected by the connecting member 12 that can be adjusted to expand and contract in the vertical direction. , It is easy to load more than half of the total weight on the electrically driven wheels 2. The turning plate 35 is extended to a position where a person on the vehicle can operate the direction changing lever 36 or a rope body connected to the turning lever 36 so that the turning operation can be easily performed without using a turning drive motor. Also, the weight can be easily reduced. Since the driving operation of the wheel driving motor 4 is performed by wireless signal transmission / reception, it is possible to avoid complicated wiring work and the like and reduce wiring failures. When the turning angle is limited in this way, wired operation can be performed in addition to wireless operation, and both can be used as needed.

[0030]

Fourth Embodiment As shown in FIG. 6, in a driving wheel set mounted on a bogie, a swivel plate 35 is rotatably mounted on a vertical swivel shaft 27 so as to face a lower surface of a bogie mounting plate 34. The turning position is a two-way position in the front direction and the left and right direction. If the position is stabilized by a V-groove cam or the like, confusion of the driver can be prevented. A thrust bearing may be inserted between the two, but since the load is light and the speed is low, it is recommended to omit this and make a sliding contact from the viewpoint of cost reduction. Then, one electric drive wheel 2 is horizontally surrounded, and the mounting height is adjusted between the wheel supporting frame 3 which is supported together with the battery 5 and the motor control device 6 and the connecting member 12, or any one of them. And attach it. This mechanism is preferably the above-mentioned cylinder expansion / contraction mechanism or screw mechanism. For fine height adjustment, a shim plate is preferably interposed when the bogie mounting plate 34 is mounted on the bogie substrate 33 with a bolt nut, a screw nut, or the like. The direction change lever 36 or a rope connected to the direction change lever 36 is extended on the turning plate 35 to a position where a person on the vehicle can operate. A driving wheel set is characterized in that the driving operation of the wheel driving motor 4 is configured to be performed by wireless signal transmission and reception.

[0031]

As shown in FIG. 7, in a driving wheel set to be mounted on a trolley, a turning plate 35 is mounted so as to be rotatable by a vertical turning shaft 27 facing a lower surface of a trolley mounting plate 34, as shown in FIG. A wheel support frame 3 that surrounds one electric drive wheel 2 in a horizontal direction and supports a wheel drive motor 4, its battery 5, and a motor control device 6,
The mounting height is adjusted by the connecting member 12 or a height adjusting member between the two, and mounted on the revolving plate 35, and the revolving motor 1 is mounted on the revolving plate 35.
The pinion friction wheel 14 driven by the wheel 3 is mounted, and the wheels of the pinion friction wheel 14 are configured to be pressed against the bogie mounting plate 34. The driving operation of the wheel driving motor 4 and the direction changing motor 13 is performed wirelessly. A driving wheel set characterized by being configured to perform signal transmission and reception. That is, a device for turning the whole drive system by pressing a friction wheel rotated by a direction changing motor against a bogie member is added to the means 4 for solving the problem.

[0032]

Operation 5 As shown in FIG. 7, in addition to operation 4, a pinion friction wheel 14 driven by the direction changing motor 13 is mounted on the revolving plate 35, and the wheels of the pinion friction wheel 14 are
By pressing the carriage mounting plate 34, the noise can be reduced without using expensive gears, and the direction can be changed by the motor driven pinion friction wheel 14. Since the driving operation of the wheel driving motor 4 and the direction changing motor 13 is configured to be performed by wireless signal transmission / reception, the complexity of wiring and wiring trouble can be reduced. In addition, if the direction change angle is limited as described above, as described in the fourth means for solving the problem and the fourth function, wired operation is also facilitated.

[0033]

[Embodiment 5-1] As shown in FIG. 7, an additional feature is that a friction wheel, which is rotated by a direction changing motor, is pressed against a bogie member to turn as compared with the example of the fourth embodiment. That is, a pinion friction wheel 14 driven by the direction changing motor 13 is mounted on the revolving plate 35, and the wheels of the pinion friction wheel 14 are configured to be pressed against the bogie mounting plate 34. The driving operation of the motor 4 and the direction changing motor 13 is a driving wheel set characterized by being configured to be performed by wireless signal transmission and reception.

[0034]

Embodiment 5-2 A drive wheel set according to embodiment 5-1 wherein the speed reducer of the wheel drive motor 4 is a one-stage or two-stage planetary friction wheel. In this device, since the friction wheel is less expensive than the gear, the cost can be easily reduced and the noise of the gear can be eliminated.

[0035]

According to the present invention, it is possible to provide an electric transfer cart having a floor board, that is, a cart board, which is sufficiently low so that a physically handicapped person and an elderly person can easily get on and off, and an electric transfer cart which can be easily operated in a standing position. Also, it is possible to provide a general-purpose and inexpensive electric transition cart and a drive wheel set that can be easily attached to an existing cart. In the present invention, the speed reduction mechanism has been described as an example of a gear, but this can be replaced by a toothless friction wheel. Rather, a friction wheel slips more than a gear rather than an excessive load, so it can be expected to have a great effect on preventing accidents due to equipment failure or sudden start and stop, lower costs and reduce gear noise. .

[Brief description of the drawings]

FIG. 1 is a side view conceptual diagram of the present invention.

FIG. 2 is a conceptual front view of the present invention.

FIG. 3 is a conceptual plan view of the present invention.

FIG. 4 is a conceptual front view of the lower part of the truck of the present invention.

FIG. 5 is a conceptual diagram of the back surface of the lower part of the carriage of the present invention.

FIG. 6 is a conceptual front view of a driving wheel set according to the present invention.

FIG. 7 is a conceptual front view of a driving wheel set according to the present invention.

[Explanation of symbols]

1: Central part of bogie substrate, 2: electrically driven wheels, 3: wheel support frame, 4: wheel drive motor, 5: battery, 6: motor control device, 7: non-driving free car, 8: brake, 9: cable Body, 1
0: operation switch, 11: fixed operation switch, 12: coupling member, 13: direction changing motor, 14: pinion gear, pinion friction wheel, 15: ring gear, ring friction wheel, 16: surface gear, surface friction wheel, 17: Frame upper step beam, 1
8: Middle beam, 19: Lower beam, 20: Planetary reducer, 21:
Perch, 22: Perch rotating hinge, 23: Perch stopper, 24: Floor surface, 25: Upper beam height fixing screw, 2
6: slip ring, 27: vertical turning axis, 28: charging window, 29: gripper, 30: sun gear, sun friction wheel, 3
1: planetary gear, planetary friction wheel, 32: internal gear, internal friction wheel, 33: bogie board, 34: bogie mounting plate, 35: revolving plate, 36: revolving lever, 37: height adjusting member, 38:
Dolly board cutout cover

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B62B 3/00 B62B 3/00 G

Claims (5)

[Claims] 1. A wheel supporting frame 3 supporting an electric drive wheel 2 is connected to a connecting member 12 so that one electric drive wheel 2 is loaded with a half or more of the total weight of the truck at a center portion 1 of the carriage substrate. To the center part 1 of the truck substrate, and to adjust the mounting height by the connecting member 12, and mount the wheel driving motor 4, its battery 5, and the motor control device 6 to the wheel supporting frame 3. And mounting three or more non-driving vehicles 7 at a position surrounding the electric drive wheels 2 around the periphery of the truck substrate and stabilizing the truck substrate on the floor. An electric transition carriage, wherein the driving operation is performed by wireless signal transmission / reception. 2. A plurality of brakes 8 which are pressed down on the floor to apply a brake to the periphery of the bogie board, and these adjacent brakes are connected to each other by a cable body 9 to form a bogie board central part 1
When the person sitting on the dolly or standing on the dolly board is allowed to extend to a position where the rope body 9 can be gripped by hand in that posture, and when the rope body 9 is not towed, the brake 8 is moved by gravity or spring. 2. The electric transition vehicle according to claim 1, wherein the vehicle is configured to restore the non-braking position by force. 3. The frame is raised from the periphery of the bogie, and the upper beam 17 of the frame is formed as a handrail-shaped beam, the height of which is suitable for a person to put on the armpit in the standing or sitting position. C-shaped or U-shaped middle beam 1 including an adjustable cylinder extension mechanism
8 is set to a height suitable for a person standing or sitting in an elbow position, the bogie substrate center part 1 is projected into a size and shape suitable for a chair, and a cable body 9 equipped with a radio transmitter is placed in a standing or sitting position. 3. The electric transfer cart according to claim 1, wherein the electric transfer cart is stretched around a position where it can be easily picked up by hand. 4. A driving wheel set to be mounted on a trolley, wherein a turning plate 35 is rotatably mounted on a vertical mounting shaft 27 facing a lower surface of a trolley mounting plate 34, and one electric driving wheel 2 is horizontally mounted. The mounting height is adjusted by the wheel supporting frame 3 which supports the wheel driving motor 4 and its battery 5 and the motor control device 6, the connecting member 12, or the height adjusting member therebetween. Then, the turning plate 35 is attached to the turning plate 35, and the turning lever 35 or a rope body connected thereto is extended to a position where a person on the vehicle can operate the turning plate 35, and the wheel drive is performed. A driving wheel set characterized in that the driving operation of the motor 4 is performed by wireless signal transmission and reception. 5. A driving wheel set to be mounted on a trolley, wherein a turning plate 35 is rotatably mounted on a vertical mounting shaft 27 so as to face a lower surface of a trolley mounting plate 34, and one electric driving wheel 2 is horizontally mounted. The mounting height is adjusted by the wheel supporting frame 3 which supports the wheel driving motor 4 and its battery 5 and the motor control device 6, the connecting member 12, or the height adjusting member therebetween. Then, the pinion friction wheel 1 driven by the direction changing motor 13 is mounted on the revolving plate 35.
4, the wheel of the pinion friction wheel 14 is pressed against the bogie mounting plate 34, and the driving operation of the wheel driving motor 4 and the direction changing motor 13 is performed by wireless signal transmission / reception. Drive wheel set characterized by the following.