JPH0733524Y2 - Control rod structure for wagon vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an operating rod structure for a wagon vehicle which is attached to a self-propelled wagon vehicle for transporting meals in a hospital or the like, and more specifically, the wagon. The present invention relates to an operating rod structure for a wagon vehicle, which is capable of operating and stopping a vehicle in accordance with a declination state of the operating rod.

(Prior Art) The wagon carts used for transporting meals, which are used in hospitals and the like, tend to increase in size and decrease in number so that many meals can be transported at once due to the labor shortage of nurses these days. It is in.

However, it cannot be denied that the wagon car becomes larger and heavier, which increases the burden on the nurse who operates the wagon car.

Therefore, a self-propelled wagon vehicle in which a battery is mounted on the wagon vehicle and the drive wheels are driven by a DC motor or the like using the battery as a power source has been developed.

The self-propelled wagon vehicle is designed such that the motor is driven and stopped by operating the operation unit provided on the main body of the wagon, and the operation unit is operated at the rear of the traveling direction. There is something to do at the front in the traveling direction.

(Problems to be solved by the invention) However, according to the conventional self-propelled wagon vehicle,
The operation of the operation unit was complicated, and the operator could not perform a stop operation quickly in an unexpected situation, and the risk of an accident was extremely high.

In particular, if the driving operation is performed at the rear of the traveling direction, it is difficult to confirm the front direction, and the risk of an accident is high.

On the other hand, according to the driving operation at the front part in the traveling direction, there is a drawback in that the driver's safety cannot be guaranteed, although the front can be sufficiently confirmed and the risk of a collision accident or the like is reduced.

The present invention has been made in view of the above circumstances, and seeks to ensure the safety of a driver or people in the traveling direction of a wagon vehicle in a self-propelled wagon vehicle equipped with a battery. It is a thing.

(Means for Solving the Problems) The present invention relates to a self-propelled wagon vehicle in which a battery is mounted and whose drive wheels are driven by a motor that uses the battery as a power source. An operating section having a built-in switching mechanism is provided in the operation section, and a rotary shaft for operating the switching mechanism is penetrated through the operating section, and the other side of the operating rod having the rotary axis as one side is parallel to the rotary axis. Is equipped with a push-button switch, and when the operation rod is in a horizontal state and the push-button switch is operated, the motor is driven, and when the operation rod is rotated by a predetermined angle around the rotation shaft, the switching mechanism is interlocked with this. Then, the motor is stopped, and when the operation rod is further rotated from that state, the electromagnetic brake is activated, thereby providing an operating rod structure for a wagon vehicle, thereby achieving the above object. is there.

(Operation) According to the present invention, when the operating rod is in the horizontal state and the push button switch provided on the operating lever of the operating rod is operated, the motor driven by the battery is driven, and the driving wheel is driven by the motor. Then, the wagon car runs.

Then, when the operating rod is rotated by a predetermined angle while the wagon vehicle is traveling, the switching mechanism is interlocked with this and thus the motor is stopped.

Further, when the operating rod is further rotated, the electromagnetic brake is activated, and the wagon vehicle traveling by inertial force suddenly stops.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a main part of a wagon according to the present invention,
FIG. 2 is a side view showing a rotating state of an operating rod in the wagon vehicle, and FIGS. 3 (a) to (c) are plan views showing a using state of the wagon vehicle.

In FIG. 1, reference numeral 10 is a wagon wheel, and this wagon wheel 10 is provided with a cupboard 12 on which tableware R on which foods and the like are placed can be placed.

Further, reference numeral 20 in the drawing is an operation unit, and this operation unit 20 is provided with an operation panel 21 in which operation display lamps and switches are integrated, and has a switching mechanism 22 built therein.

As shown in the figure, the operating portion 20 is fixed to the front surface 10a of the wagon vehicle 10 in the traveling direction, and the rotary shaft 31 penetrates through this.

Both ends of the rotating shaft 31 are rotatably supported by bearings 32 fixed to the front surface 10a of the wagon wheel 10.
The rotation of the switching mechanism 22 is activated.

The switching mechanism 22 is an electric switch using a rotary switch or a rotary encoder, and has a rotary shaft 31.
The contact is opened and closed according to the declination angle of.

On the other hand, reference numeral 30 in the drawing is an operating rod, and this operating rod 30 is
The rotating shaft 31 and a steering lever 33 parallel to the rotating shaft 31.
And a stay 3 that connects the rotating shaft 31 and the control lever 33.
It is composed of 5 and 3 and has a trapezoidal shape as a whole.

By the way, the control lever 33 of the operating rod 30 is equipped with push button switches 37, 37, and when the contact of the switching mechanism 22 is closed, the push button switch 3
When 7,7 is operated, a motor mounted on the wagon vehicle 10 and driven by a battery is driven, and the drive wheels are driven by this motor.

In FIG. 2, when the operating rod 30 is in the horizontal state, that is, in the state A1, the contacts of the switching mechanism 22 are closed. Therefore, when the push button switch 37 is operated in the state A1, The motor drives.

Further, when the operation rod 30 is rotated about the rotation shaft 31 by a predetermined angle and is positioned in the state A2, the switching mechanism 22 is interlocked with this and its contact is opened, and thus, whether the push button switch 37 is operated is determined. The motor stops regardless of the above.

In addition, the operating rod 30 is further rotated from the state A2 to the state A3.
Position, the electromagnetic brake operates to brake the axle of the drive wheels driven by inertial force.

Next, in FIG. 3, reference numeral 13 is a drive wheel, and the drive wheel 13 is driven by the motor mounted on the wagon vehicle 10 and having the battery as a power source as described above.

Incidentally, FIG. 3 (a) shows the wagon vehicle 10 being parked.

The operating rod 30 at this time is vertical (state A4) as shown in the figure.
The wagon vehicle 10 does not run regardless of whether the operation panel 21 or the push button switch 37 is operated.

Further, FIG. 3 (b) shows the wagon vehicle 10 in motion.

At this time, the driver M holds the control lever 33 of the operating rod 30 to make it horizontal (state A1), and pushbutton switch 37
It is possible to drive the wagon vehicle 10 by operating.

Further, FIG. 3 (c) shows a state in which the wagon vehicle 10 is stopped.

10 wagons in motion, as revealed in this figure
In order to stop the operation, the driver M may rotate the operating rod 30 by a predetermined angle to bring it into the state A2 and stop the motor.

If the driver M stops at that time, the operating rod 30 inevitably passes the state A3 by the wagon vehicle 10 traveling by inertial force, so that the electromagnetic brake operates and the wagon vehicle 10 suddenly stops.

Thus, according to the present invention, the operation panel 21 of the operation unit 20.
Since the wagon vehicle 10 can be stopped without operating the wagon vehicle, in an unexpected situation, the wagon vehicle 10 can be stopped without performing complicated operations.
10 can be stopped suddenly.

By the way, according to the above-described embodiment, the motor is stopped and the electromagnetic brake is actuated as shown in the states A2 and A3.
Although the operating rod 30 is rotated downward by a predetermined angle around the center, the motor may be stopped and the electromagnetic brake may be activated by rotating the operating rod 30 upward by a predetermined angle.

The angles of the states A2 and A3 can be arbitrarily determined according to the environment in which they are used.

On the other hand, the electromagnetic brake may be separately provided on the axle of the drive wheels as described above, or a motor with a brake may be adopted.

The operating rod 11 is not limited to a trapezoidal shape, and may have a rectangular shape or a T-shape, for example.

(Effects of the Invention) Since the operating rod structure for a wagon vehicle of the present invention is configured as described above, it has the following effects.

(1) An operating portion having a switching mechanism is provided on the front surface of the wagon vehicle in the traveling direction, and a rotating shaft for operating the switching mechanism is passed through the operating portion, and the operating rod has one side with the rotating shaft. Equipped with a push button switch on the other side parallel to the rotation axis,
When the operating rod is in a horizontal state and the push button switch is operated, the motor is driven, and when the operating rod rotates a predetermined angle around the rotation shaft, the switching mechanism interlocks with this and the motor stops. Since the electromagnetic brake is activated when the operating rod is further rotated from that state, the wagon vehicle can be stopped by a simple operation only by rotating the operating rod.

(2) Also, in an unexpected situation while traveling, when the operating rod is rotated by a predetermined angle about the rotation axis, the electromagnetic brake operates, so that the wagon vehicle can be operated in an unexpected situation during traveling. There is an excellent effect that the vehicle can be stopped easily, quickly, and accurately, the collision can be prevented, and the driver's safety can be secured.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a wagon according to the present invention,
2 (a) to (c) are side views showing a usage state of the wagon, and FIG. 3 is a side view showing a declination state of an operating rod in the wagon. 10 ... Wagon car, 10a ... Front, 20 ... Operation part, 21 ... Operation panel, 22 ... Switching mechanism, 30 ... Operation rod, 31 ... Rotating shaft, 33 ... Steering lever, 37 ... Pushbutton switch.

Claims (1)

[Scope of utility model registration request] 1. In a self-propelled wagon vehicle in which a battery is mounted and whose drive wheels are driven by a motor which uses the battery as a power source, an operating portion having a switching mechanism built in the front surface in the traveling direction of the wagon vehicle. And a push button switch is provided on the other side of the operating rod that is parallel to the rotation axis of the operation rod having the rotation axis as one side. When the operating rod is in the horizontal state and the push button switch is operated, the motor is driven, and when the operating rod is rotated by a predetermined angle about the rotation shaft, the switching mechanism is interlocked with this and the motor is stopped. The operating rod structure for wagon vehicles is characterized in that the electromagnetic brake is activated when the operating rod is further rotated from that state.