JPH05244707A - Noncontact main controller for electric vehicle - Google Patents

Abstract

PURPOSE:To realize downsizing and weight reduction by employing a contactless cam switch section in a main controller for electric vehicle and to reduce expense by reducing maintenance work such as lubrication of contacts or repair of damage. CONSTITUTION:The noncontact main controller for electric vehicle integrally contains a switching section formed by coupling a pair of reversely rotating rotary encoders 18, 18 to the opposite ends of a reverse rotation shaft 5 and a main shaft 11, a converter/controller 13 therefor, a power supply 14, and a key switch 15.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention relates to a master controller which is installed in an electric vehicle cab and outputs a driving control command for the electric vehicle by operating a steering wheel.

[0002]

2. Description of the Related Art A conventional master controller for electricians will be described with reference to FIGS.

Electric vehicles have different control systems and control devices depending on the vehicle type. For this reason, there are various different master controllers that output a forward / backward command, a powering command, or a brake command to the control device, and further, the number of cam switches for outputting this command is large, and The driver's cab including the main controller also differs depending on the model, so design,
It took a lot of time to manufacture the product, which greatly affected the structure of the master controller and gave great restrictions to the configuration of the cab.

A conventional master controller will be described with reference to FIGS. 4 and 5.

In the main controller, a reversing handle 1, a notch wheel 2, a plurality of cam pieces 3 provided with projections and depressions, and a cam switch 4 linked to the cam pieces 3 are connected to a reversing shaft 5, and left and right bearings 6 are provided.
The reverse rotation shaft 5 is supported by. The main shaft 11, which connects the main handle 7, the notch wheel 8, the plurality of cam pieces 9, the cam switch 10 connected to the main handle 7, and the like in parallel, is provided with the bearing 12 in parallel.
It is configured to support.

The reverse handle 1 turns the cam switch 4 on and off to output a forward or backward command. When the reverse rotation handle 1 is rotated from the off position to either the forward or backward direction regulated by the notch wheel 2, the uneven cam piece 3 also incorporated in the reverse rotation shaft 5 is rotated, and the cam switch interlocked with this is rotated. 4 outputs forward and backward commands. In addition, the main handle 7 side is driven by the notch wheel 8 connected to the main shaft 11.
Notches (1A to 4A), neutral, brake (1B to 7B), and emergency position are engraved. By operating and rotating the main handle 7, the uneven cam piece 9 incorporated in the main shaft 11 rotates. However, the cam switch 10 operating in conjunction with this outputs a command. A mechanical interlock is provided between the reverse rotation shaft 5 and the main shaft 11 to prevent accidents due to erroneous operation.

[0007]

The master controller outputs a command by turning on the cam switch by the rotation of the main handle and the reverse handle, so that a cam switch for the required command is required, Occupies most. The cam switch has a large capacity due to the operation of directly turning on and off the control current, and the number of times the operation is performed frequently causes the contact to be damaged. Therefore, maintenance work such as maintenance of the contact and lubrication of the rotating portion is required. Further, since the reversing handle and the main handle are operated by overcoming the mechanical reaction force of the cam switch, there are various mechanisms, the structure is complicated, the cost is high, and much maintenance is required for the mechanism section. Furthermore, since the mechanism of this master controller is a single system, it must be more precise than other devices, and regular maintenance must be performed within a short period of time.

In view of the above, it is an object of the present invention to construct an inexpensive main controller by simple means, reduce maintenance work, time and cost, and improve reliability.

[0009]

In order to achieve the above object, the present invention aims to achieve the above-mentioned object because the control system and the control device have been developed in recent years and the necessity of outputting a command by a contact has been reduced. Stop the cam switch with the contact point of the master controller, and install rotary encoders that rotate in opposite directions with respect to the movement of each handle through joints at both ends of the reverse rotation shaft and the main shaft to form a dual system. A converter is provided which receives a signal from the rotary encoder according to the rotation angle within the regulation range of the notch wheel and outputs it as a notch command or signal to each control device. Further, an interlocking plate that cooperates with each other is connected to the reverse rotation shaft and the main shaft, and a solenoid lock is provided on the interlocking plate side of the reverse rotation shaft to form an interlock. Also, a key switch for manual unlocking is provided.

[0010]

In the above structure, by operating the reversing handle or the main handle to rotate each shaft within the regulation range of each notch wheel, a signal corresponding to the rotation angle of the rotary encoder at each end of each shaft is transmitted to the converter. A command signal for forward / backward movement or a powering or braking signal is output to each control device of the electric vehicle.

The rotary encoder, which rotates in the direction opposite to the movement of the steering wheel, outputs the output signals of α and (360 ° -α), respectively, when the steering wheel angle rotates by α degrees, and the sum thereof is equivalent to one rotation. Check that the value is (360 °), and if the compared absolute values do not match within the allowable error range, output a command to display the failure status on the display. To unlock and lock the lock, when an IC card or the like is inserted and the solenoid lock is excited, the interlock plate of the reverse rotation shaft is released from the solenoid lock and can be rotated, and the lock is reversed. Also, the solenoid lock can be unlocked by manually inserting the key into the key switch.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in FIGS.

The main controller comprises a mechanical section centering on the reverse shaft 5 and the main shaft 11, a converter 13 for inputting and outputting signals and outputting a required command, a control device such as a power supply device 14, and a key switch 15 as main controllers. It is housed in the controller and configured integrally. The reverse rotation handle 1 and the notch wheel 2 are connected to each other, and a pair of rotary encoders 17 and 17 which rotate in opposite directions to the movement of the reverse rotation handle are connected to both ends of a reverse rotation shaft 5 which is rotatably supported by a bearing 6. Install via. The main handle 7 has a pair of rotary encoders 17 and 17 that rotate in opposite directions to each other on both ends of a main shaft 11 supported by bearings 12 by connecting a notch wheel 8.
An interlock plate 20 having a notch for a solenoid lock 19 is attached to the reverse rotation shaft 5, and a disc-shaped interlock plate 21 is attached to the main shaft 11 so as to cooperate with each other.

In the above structure, when the reversing handle 1 or the main handle 7 is operated within the range regulated by the notch wheels 2 and 8, the shafts 5 and 11 rotate in opposite directions provided at both ends thereof. The pair of rotary encoders 17, 17 sends a signal according to the rotation angle,
The converter 13 for conversion control outputs a forward / backward command, a powering command, or a brake command to each control device of the train. At the same time, the signals of the rotary encoders 17 and 17 which rotate in mutually opposite directions are added by the converter 13, and whether the sum matches the absolute value of one rotation (360 °) is shown in the flowchart of FIG. Check in steps.

That is, when the rotation angle of the main handle 1 or the reverse handle 7 is α, the sum of the output signals α and (360 ° -α) of the pair of rotary encoders 17, 17 is 3
Whether or not it matches with 60 ° is detected, and when the absolute values do not match with each other within the allowable error, the command 22 for displaying the failure status on the display is output 22 and the emergency brake command is output 22.

When the IC card or the like is inserted into the lock / unlock input 23, the solenoid lock 19 is excited to disengage from the interlock plate 20 of the reverse rotation shaft 5 so that the reverse rotation shaft 5 can rotate. The plate 21 has a structure in which the main shaft 11 cannot rotate until the interlock plate 20 of the reverse rotation shaft 5 rotates and fits into the recess. In the case of locking, it is the reverse of the above. That is, the operation is confirmed by the signals of the rotary encoders 17 and 17 which are in the unlocked state shown in FIG. 2 by operating the shafts 5 and 11, and the solenoid lock 19 is demagnetized and locked by removing the IC card. I
When there is no means for replacing an input signal such as a C card and the device is to be operated urgently, the key 24 can be applied to the key switch 15 to unlock the solenoid lock 19 by a manual method.

The converter 13 is supplied with a constant voltage current by the power supply device 14 receiving an input power supply 25 from the outside, and converts the signals from the rotary encoders 17, 17 into command signals which can be received by each control device of the train. The output 22 is output, and the lock / unlock input 23 and the key switch 15 are input / output and the solenoid lock 19 is transmitted / received.

As described above, the cam switch mechanism is stopped and the pair of rotary encoders 17 and 17 are provided instead, so that the mechanism portion is simplified and small in size.
The weight reduction and the elimination of contacts such as the cam switch eliminates the need for maintenance work such as lubrication and maintenance of the contacts.

The rotary encoders 17, 17 and the converter 13, which rotate in mutually opposite directions, retain the failure detecting function of the rotary encoders 17, 17 and can output an emergency brake command.

Further, by providing the interlock between the reverse rotation shaft 5 and the main shaft 11, it is possible to prevent erroneous operation of the handles 1 and 7.

As another embodiment of the present invention, the mechanical portion of the main controller, the converter, the power supply unit, etc. may be installed separately in the driver's cab without being integrally configured.

It is also possible to eliminate the notch wheel and perform stepless control without setting the handle operation within the regulation range of the notch wheel.

[0023]

According to the present invention, the structure is reduced in size and weight,
Moreover, it is possible to provide a master controller which has an inexpensive structure, greatly reduces maintenance work, and has improved reliability.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a master control device according to the present invention.

FIG. 2 is a side view for explaining a part of the operation in FIG.

FIG. 3 is an operation explanatory diagram of a pair of rotary encoders.

FIG. 4 is a flowchart of a master control device according to the present invention.

FIG. 5 is a plan view of a conventional master control device.

6 is an exploded view of the electric circuit of FIG.

[Explanation of symbols]

 1 Reverse rotation handle 2,8 Notch wheel 5 Reverse rotation axis 7 Main handle 11 Spindle 13 Converter 14 Power supply unit 15 Key switch 17,18 Rotary encoder 20,21 Interlock plate

Claims (1)

[Claims] 1. A pair of rotary encoders provided at both ends of a rotary shaft connected to each handle are rotated in opposite directions by operating a main handle or a reverse handle according to each notch regulation. A non-contact master control device for an electric vehicle, comprising: a master controller and a control device that outputs a predetermined command in accordance with a difference in rotation angle output of each pair of rotary encoders.