JPS5939064Y2 - Safety device for electric sunroof device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for a sunroof device installed on the roof of an automobile and driven by an electric motor.

In a sunroof device that uses an electric motor to move along the roof of a car to open and close an opening, it is necessary to raise the sunroof panel by a predetermined amount in order to fit it into the opening at the final stage of movement of the sunroof panel. In order to ensure a large operating torque at this time, the clutch connected to the electric motor must be set to the maximum torque during this rise.

Therefore, even if your neck or arm gets stuck in the sunroof due to carelessness, the sunroof panel will continue to operate.
Risk of injury, etc. may occur.

An object of the present invention is to provide a safety device that automatically stops driving the sunroof panel to prevent injury when a neck or arm is caught in the sunroof panel.

Next, embodiments of the present invention will be described with reference to the drawings.

An opening 3 of a predetermined size is provided in the roof 2 above the driver's seat of the automobile 1.
will be provided.

The sunroof panel 4 is guided in the front and back direction substantially along the roof 2 by a pair of left and right guide rails 5 on the lower side of the roof 2 to open and close the opening 3.

The sunroof panel 4 is driven by an electric motor 9 connected via a cable (not shown).

The sunroof activation switch 10 has two basic terminals 11 and 12.
It has forward rotation side contacts 14.15 and reverse rotation side contacts 16.17.

Contact 14.17 is connected to the positive terminal of DC power supply 18, and contact 15.16 is connected to the negative terminal of DC power supply 18.

The limit switch 20 is located at the front part of the right side 21 when facing the front of the vehicle, and closes its contacts when it is not in contact with the side edge of the sunroof panel 4. open.

The limit switch 22 is located at the rear portion of the side 21, and its contacts are open when it does not come into contact with the side edge of the sunroof panel 4, and closes when it comes into contact with the side edge of the sunroof panel 4.

The limit switch 20.22 and the coil 24 of the relay 23 are connected in series with each other and both ends are connected to the base terminal 11.12 of the sunroof activation switch 10.

The base terminal 11 is connected to one end of the electric motor 9 via an overcurrent breaker 25 composed of a fuse or the like and a break contact 26 of a relay 23.

The base terminal 11 is also connected to one end of the motor 9 via the meter contact 27 of the relay 23, and the other end of the motor 9 is connected to the base terminal 12.
connected to.

When the sunroof panel 4 is pulled back and the opening L13 is open, the contacts of the limit switch 22 are open, no current flows through the coil 24 of the relay 23, and the contacts 2
6.27 is the base terminal 11. of the sunroof operation switch 10 in order to close the 6-opening door 3 which is in the open and closed states, respectively.
12 is connected to the normal rotation side contact 14.15, the contact 27 of the relay 23 is closed until the side edge of the sunroof panel 4 comes into contact with the limit switch 22. Electric current is supplied to the electric motor 9 through the contact 27, and the sunroof panel 4 is moved forward by the electric motor 9.

When the side edge of the sunroof panel 4 comes into contact with the limit switch 22, the contacts of the limit switch 22 are closed, so current is supplied to the coil 24 of the relay 23, and the contacts 26 and 27 of the relay 23 are in the closed and open states, respectively. becomes.

In this way, current is supplied to the electric motor 9 via the overcurrent breaker 25 and the contacts 26, and the sunroof panel 4 moves forward.

If your neck or arm is caught between the front edge of the opening 3 and the front edge of the sunroof panel 4 while the sunroof panel 4 is moving until the side edge of the sunroof panel 4 comes into contact with the limit switch 20, the electric motor The power supply current to 9 increases to a predetermined value or more.

This opens the overcurrent breaker 25, so power supply to the electric motor 9 is stopped, and movement of the sunroof panel 4 is stopped.

Accidents such as injuries are therefore avoided.

When the sunroof panel 4 moves to a position where the opening 3 is almost closed, that is, when the side edge of the sunroof panel 4 comes into contact with the limit switch 20, the contacts of the limit switch 20 open and the coil 24 of the relay 23 is no longer supplied with current. The contacts 26 and 27 of the relay 23 are open and closed, respectively.

In order to fit into the opening 3, the sunroof panel 4 needs to be moved upward by a predetermined amount in the final stage, and at this time, a large current needs to be supplied to the electric motor 9. Since the current is supplied through the contact 27 without going through the device 25, the driving of the electric motor 9 does not stop.

When opening the opening 3, the base terminal 11.12 of the sunroof activation switch 10 is connected to the reversing contact 16.17.

At this time, the DC motor 9 is supplied with current in the opposite direction and reverses, and the sunroof panel 4 moves rearward.

As described above, according to the present invention, a large current to the electric motor 9 required for the final stage of the sunroof panel 4 is secured, and when the neck or the like gets caught in the opening 13, the power supply to the electric motor 9 is immediately stopped. It is possible to stop and avoid injury.

In the embodiment, a limit switch 22 is provided to ensure a relatively large starting current for the electric motor 9, but if the starting current is within the range allowed by the overcurrent breaker 25, the limit switch 22 is activated. Can be omitted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an automobile equipped with a sunroof device, FIG. 2 is a plan view of an embodiment of the present invention, and FIG. 3 is an electrical circuit diagram of an embodiment of the present invention. 1... Car, 2... Roof, 3...
...Opening, 4...Sunroof panel, 9...
...DC motor, 18...DC power supply, 23
...Relay, 25...Overcurrent breaker.

Claims (1)

[Scope of utility model registration request] In an electric sunroof device that includes an opening in the roof of a car, a sunroof panel that moves almost along the roof of the car to open and close this opening, and an electric motor that drives the sunroof panel, the electric motor is directly or overcurrent connection switching means for selectively connecting to the power source via the cutoff means; and control means for controlling the connection switching means by detecting that the sunroof panel has reached a position where the opening is substantially closed; A safety device for an electric sunroof device, characterized in that the electric motor is connected to a power source via an overcurrent cutoff means by a connection switching means until the sunroof reaches a substantially closed position.