JPS6111923Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a connector connection device for an electric vehicle such as an electric wheelchair, and particularly for an electric vehicle equipped with a non-excitation type electromagnetic brake, a motor operation test and an electromagnetic brake release are performed once. The present invention relates to a connector connection circuit for an electric vehicle that can be connected simply by changing the connector connection.

In recent electric vehicles such as electric wheelchairs, in order to prevent brake malfunction due to poor connector contact or battery deterioration, the brakes are applied when no electricity is applied, and the brakes are released only when electricity is applied. Type electromagnetic brakes are coming into use. What is shown in Fig. 1 is an example of the circuit of a conventional electric wheelchair, in which 1 is a battery, 2a to 2f are connectors, 3 is a controller, and 4 is a battery.
5 is a motor, and 5 is a non-excited electromagnetic brake. In the case of this circuit example, when in use, the connectors 2a and 2b, 2d and 2e, and 2c and 2f are connected as shown by the solid arrows, and the passenger can press the brake release switch (not shown) of the controller 3. figure)
By turning on the electromagnetic brake 5, the electromagnetic brake 5 is energized, the brake on the motor 4 or the driving force transmission shaft from the motor 4 to the wheels (not shown) is released, and the speed regulator of the controller 3 (not shown) is released. ) The wheelchair travels according to the rotational speed of the motor 4, which is adjusted by the rotation speed of the motor 4. (The brake release switch and the speed regulator are sometimes integrated like a volume control with a switch.) By the way, in such electric wheelchairs, it is necessary to test the operation of the motor 4 or to facilitate troubleshooting in the event of a breakdown. In order to do this, male and female connectors of the same type are used for the connector 2a on the battery 1 side and the connector 2e on the motor 4 side, so that they can be directly connected as shown by the dashed arrow 6a during testing. However, as mentioned above, as non-excitation type electromagnetic brakes 5 have come to be used, connectors 2a and 2e are
The brake of the electromagnetic brake 5 cannot be released simply by directly connecting the electromagnetic brake 5, and it is now necessary to separately supply power for releasing the brake to the electromagnetic brake 5 from the battery 1 or the like, as shown by the broken line arrow 6b.

The present invention was developed in view of these problems, and includes two pairs of power supply terminals connected in parallel to the battery side connector, and one of the corresponding two pairs of power receiving terminals on the motor side connector. A connector connection circuit for an electric vehicle is shown in which a motor is connected to one side and an electromagnetic brake is connected to the other, so that when the connector is directly connected, power is supplied to the motor and power is supplied to the electromagnetic brake (brake release) at the same time. This is what we provide.

The details of the present invention will be explained below with reference to the embodiment of the electric wheelchair shown in FIG. Components that are the same as those shown in FIG. 1 are designated by the same reference numerals, and their explanation will be omitted. 7a in the figure is battery 1
The side connector 7b is the motor 4 side connector.
The connectors 7a and 7b are of the same type and can be combined. Four pins are arranged in each of the two connectors 7a and 7b. Two of the four pins of the connector 7a on the battery 1 side are connected to the positive terminal of the battery 1, and the remaining two are connected to the negative terminal of the battery 1, and there are two pairs of power supply terminals, one each for positive and negative terminals. It is formed.
Furthermore, the four pins of the connector 7b on the motor 4 side are also two pairs of power receiving terminals consisting of one positive and negative pin, corresponding to the two pairs of power supply terminals.
A motor 4 is connected to one pair of them, and an electromagnetic brake 5 is connected to the remaining pair.

In normal use, the connectors 7a and 7c and 7b and 7d are connected as shown by the solid line arrows, and the switch of the controller 3 can be operated in the same manner as explained based on FIG. The electric wheelchair travels by energizing the electromagnetic brake 5, releasing the brake, and rotating the motor 4 at a desired speed.

When it is desired to test the operation of the motor 4 or the electromagnetic brake 5 or to investigate the cause of failure when the motor 4 or electromagnetic brake 5 stops moving, the connectors 7a and 7b are directly connected as shown by the broken line arrow in FIG. Then, by looking at the operating state at that time, it is possible to judge whether the motor 4, electromagnetic brake 5, and controller 3 are good or bad.

If it is sufficient that the motor 4 only moves in one direction, that is, the direction of movement of the electric wheelchair is only forward, then one of the four pins of the connectors 7a and 7b will be shared with the other pin, and the total will be 3 pins. A pin from a book will suffice.

Furthermore, it goes without saying that the number of pins of the connector may be increased for use in other applications.

As explained above, in this invention, two pairs of power supply terminals are provided on the battery side connector, and one of the two corresponding pairs of power receiving terminals on the motor side connector is connected to the motor, and the other is connected to the electromagnetic brake. I'm trying to connect.

This eliminates the need for a separate connection to release the electromagnetic brake, unlike conventional systems, when testing motor rotation or investigating the location of a failure when an electric vehicle such as an electric wheelchair stops moving. Required tests can be performed with only one connector connection. Furthermore, not only the number of connectors is halved, but also the number of connectors is reduced from battery 1 to controller 3 during normal use.
Since the pins are connected in parallel, the voltage drop is reduced.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an example of the circuit connection of a conventional electric wheelchair, and FIG. 2 is a circuit diagram showing an example of the circuit connection of the electric wheelchair to which the present invention is applied. 1... Battery, 4... Motor, 5... Non-energized electromagnetic brake, 7a, 7b... Connector.

Claims (1)

[Scope of utility model registration request] In an electric vehicle that is equipped with a non-excited electromagnetic brake and in which the battery side connector and the motor side connector are of the same type and can be directly connected, two pairs of power outlet terminals connected in parallel to the battery side connector are provided. A connector connection device for an electric vehicle, characterized in that a motor is connected to one of two pairs of power receiving terminals of a motor-side connector corresponding to the above, and an electromagnetic brake is connected to the other.