JPH08183345A - Sunshine roof control circuit - Google Patents

Abstract

PURPOSE: To reduce cost while simplifying a structure of a sunshine roof control circuit. CONSTITUTION: A double-pole double-throw operating switch 1, having both select positions of close tilt up/open tilt down and a neutral position, is switched to selectively energize the first relay RL1, and a current is carried in a motor 3a to perform tilt/slide action. In a tilt up completion position and a fully closed position at tilt action time, by turning off the first limit switch LS1, in a fully opened position and a fully closed position at slide action time, by turning off the second limit switch LS2, stopping is performed, and in the fully closed position, the first relay is energized through the third limit switch LS3, turned on in the fully closed position, and through a normally close contact of the second relay RL2 to make restartable. The second relay can be energized with the first relay, to self hold the third limit switch in an on-condition. By a simple circuit constitution of the relay and the limit switch, the action can be realized, to enable a cost to reduce in a sunshine roof control circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sunroof control circuit, and more particularly to a tilt operation between a fully closed position and a tilted up position of a sunroof panel by switching a double pole double throw type operation switch having a neutral position. Also, the present invention relates to a sunroof control circuit that selectively enables a sliding operation between a fully closed position and a fully open position.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Examined Patent Publication No. 2-205, one double pole double throw type operation switch having a neutral position is used, and one of the closing sides is used for closing / tilting up selection. There is a sunroof device for an automobile that enables tilting and sliding from the fully closed position of the sunroof panel by selecting the other as open / tilt down.

In the sunroof device capable of tilting and sliding as described above, it is necessary to stop the sunroof device at the fully closed position when the tilt is raised from the tilt down and when the sliding open state is closed. In order to perform such an operation, a fully closed position detection limit switch is provided to detect not only the tilt up position and the slide fully open position, but also the tilt closed position and the fully closed position where the slide is fully closed. It is conceivable that the motor energization line is cut off by the OFF state of the fully closed position detection limit switch at the fully closed position.

For example, the limit switch is mechanically moved by a solenoid, and the pattern of the limit switch at the time of stop and the pattern of the limit switch at the time of reclosing are changed to stop and restart the motor by tilting and sliding. It is possible between both parties. However, with that structure, the mechanical part of the solenoid becomes complicated, which causes a rise in the manufacturing cost. Further, since a motor current is passed through the limit switch, there is a problem that it is necessary to use an expensive limit switch having a large capacity.

[0005]

SUMMARY OF THE INVENTION In view of the above problems of the prior art, a main object of the present invention is to provide a sunroof control circuit which can simplify the structure and reduce the cost.

[0006]

According to the present invention, there is provided a double-pole double-throw type operation having both a closed / tilt up and open / tilt down selection position and a neutral position therebetween. A switch, a motor for driving the sunroof panel, a first relay for energizing the motor so as to rotate the motor in a direction corresponding to a selected position of the operation switch, and a coil of the first relay A second relay having a coil connected in parallel with the first relay in the operating range of the sunroof panel and between the common contact of the second relay and the operation switch; A limit switch that is turned on at least in the fully closed position of the second relay, and the non-excitation selection contact of the second relay is connected to the coil of the first relay and is excited. When selected contact is achieved by providing a sunroof control circuit, characterized in that connected to the coil of the second relay.

[0007]

With this configuration, when the operation switch is turned on from the fully closed position of the sunroof panel, the first relay is excited by one of the contacts of the second relay through the limit switch to energize the motor. , The motor rotates in the direction selected by the operation switch. Since the coil of the second relay is excited in the tilt-down or closing operation, the selection contact is switched to the coil side of the second relay when excited, and when the sunroof panel reaches the fully closed position in that state. Since the limit switch is turned on,
In the coil of the second relay, the exciting current from the selective contact at the time of exciting the second relay coil flows to be in a self-holding state. At this time, since the non-excited selection contact of the second relay is opened, the first relay is in the non-excited state and the motor stops rotating even when the operation switch is kept closed. When the operation switch is released, the excited state of the second relay is released and the self-holding is released.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a circuit diagram of a main part of an automobile sunroof device to which the present invention is applied. The circuit includes an operation switch 1 operated by an occupant, a control unit 2 that performs control according to a switch signal from the operation switch 1, and a motor device 3 driven by the control unit 2. In this sunroof device, the motor device 3
By reversing the motor 3a in the forward and reverse directions, the sunroof panel that closes the opening provided in the roof of the vehicle (not shown) can perform tilt-up / tilt-down and slide opening / closing respectively from the fully closed position.

The operation switch 1 is a two-pole double-throw switch having a neutral position, and the selection terminals 1a and 1b on one side of the pair of contacts are selected to be closed and tilted up, and the selection terminals 1c and 1d on the other side. Is set as open / tilt down selection. One selection terminal 1a on the close / tilt up selection side
And the other select terminal 1d on the open / tilt down selection side are connected to a positive electrode of a battery (not shown), and the other select terminal 1c on the close / tilt up select side and the one select terminal 1b on the open / tilt down select side. Is grounded.

The motor device 3 has a first limit switch LS1 which is turned on / off in association with the rotation of the motor 3a.
And a second limit switch LS2 and a third limit switch LS3 as a limit switch.
The on / off operation of these limit switches LS1 to LS3 is shown in FIG. In the figure, the central portion of the horizontal axis (between tilt down and slide fully closed) is the fully closed position.

As shown in FIG. 2, the first limit switch LS1 is turned off at the fully closed position and the tilt-up completion position, and the second limit switch LS2 is turned off at the fully closed position and the slide fully open position. In other cases, that is, during the tilting operation and the sliding operation, they are turned on. Further, the third limit switch LS3 is provided in each of a section between a tilt-up completion position and a tilt-up / down intermediate position (during tilt operation), and a section between a slide fully open position and a slide open / close intermediate position (during slide operation). It is turned off, and is turned on in other sections including the fully closed position.

Next, details of the circuit configuration will be shown below. The control unit 2 includes the common terminal 1e of the contact having the both selection terminals 1a and 1c, the node of each of the selection terminals 1c and 1b grounded, and the common terminal 1f of the contact having the both selection terminals 1b and 1d. Connected with. The common terminal 1e is connected to the first limit switch LS1 via the diode D1 in the control unit 2.
Is connected to one end. First limit switch LS1
The other end of the diode D2 in the control unit 2
Is connected to one end of the coil of the first relay RL1. The other end of the coil of the first relay RL1 is connected to the nodes of the selection terminals 1c and 1b and is grounded.

The common terminal 1f of the operation switch 1 is connected to the common terminal C1 of the contact of the first relay RL1 via the motor 3a. First relay RL1
In the contact of, the normally open terminal A1 is the common terminal 1
The normally closed terminal B1 is connected to the node of the common terminal 1f and the motor 3a.

Normally closed terminal B of the contact of the first relay RL1
The node between 1 and the motor 3a is connected to one end of the second limit switch LS2 via the diode D3.
The other end of the second limit switch LS2 is connected to the other end of the first limit switch LS1.

Further, both common terminals 1e of the operation switch 1
1f is connected to one end of the third limit switch LS3 via the respective diodes D4 and D5, and the other end of the third limit switch LS3 is the second relay RL2.
Is connected to the common terminal C2 of the contact. The coil of the second relay RL2 is connected in parallel with the coil of the first relay RL1. That is, the other ends of the first and second limit switches LS1 and LS2 and the diode D1
And the node is connected to the second relay RL via the diode D6.
It is connected to one end of the second coil and the other end of the coil of the second relay RL2 is grounded.

When the second relay RL2 is energized, the normally closed terminal B2 as a non-excited selection contact of the second relay RL2 is connected to a node between the diode D2 and the coil of the first relay RL1. The normally open terminal A2 as a selection contact is connected to a node between the diode D6 and the coil of the second relay RL2.

Next, the operating procedure of the present circuit thus constructed will be described below. In the state of FIG. 1, the roof panel is in the fully closed position. From the fully closed position, close the operation switch 1 to the tilt / tilt up selection side (contact 1a
When switching to the 1b side), the common terminal 1e is connected to the power supply voltage and the common terminal 1f is grounded. Then, the first relay RL1 from the common terminal 1e via the third limit switch LS3 and the normally closed contacts of the second relay RL2.
An electric current flows through the coil and the first relay RL1 is excited. Therefore, from the common terminal 1e to the motor 3a via the contact (closed to the normally open contact side) of the first relay RL1.
Is energized, and the roof panel is driven in a direction to tilt up from the fully closed position.

If the roof panel is displaced from the fully closed position even a little, the first limit switch LS1 is turned on.
The exciting current of the first relay RL1 flows through the first limit switch LS1. Operation switch 1
If the switch is continuously switched to the close / tilt up selection side, the third limit switch LS3 is turned off at the intermediate position of the tilt up operation, but the first relay switch LS1 is turned on so that the first relay RL1 is excited. Since it is held, the motor 3a continues to rotate. Then, at the tilt-up completion position, the first limit switch LS1 is turned off and the flow of the exciting current is cut off, so the contact of the first relay RL1 is closed to the normally closed terminal B1 side, and the motor 3
a stops.

When tilting down from the tilt up side, the operation switch 1 is switched to the open / tilt down selection side (contacts 1c and 1d side). In this case, since current flows from the common terminal 1f to the coil of the first relay RL1 via the second limit switch LS2 in the on state,
Since a current flows through the motor 3a in the opposite direction (from the common terminal 1f side to the common terminal 1e side), the motor 3a reversely rotates and the roof panel can be tilted down. At the tilt-down completion position, the second
Since the limit switch LS2 is turned off and the flow of the exciting current is interrupted, the contact of the first relay RL1 is closed to the normally closed terminal B1 side, and the motor 3a is stopped.

In the fully closed position, the third limit switch LS3
Is on, and its third limit switch LS
There is a line reaching the contact of the second relay RL2 through 3, but the second relay RL together with the first relay RL1.
2 is also excited, the contact of the second relay RL2 is closed to the normally open terminal A2, and the excited state of the second relay RL2 is self-maintained. Therefore, even if the second limit switch LS2 is turned off, the excited state of the second relay RL2 is not released, and the coil of the first relay RL1 is excited through the normally closed terminal B2 of the contact of the second relay RL2. No current flows, and the excitation of the first relay RL1 is released when the fully closed position is reached as described above.

When the operation state of the operation switch 1 is released, the contact is returned to the neutral position, so that the excitation of the second relay RL2 is released.

In order to perform the slide opening operation from the fully closed position, the operation switch 1 is opened on the tilt down selection side (contact 1
c) 1d side). In this case, in the fully closed position, a current is applied to the coil of the first relay RL1 via the contacts of the third limit switch LS3 and the second relay RL2 (closed to the normally open terminal A2 side) in the same manner as above. Flow, first
Since the relay RL1 is excited, a current flows from the common terminal 1d side to the common terminal 1c side in the motor 3a, and the roof panel can slide in the fully open direction. When the fully open position is reached, the second limit switch LS
2 is turned off and the third limit switch LS3 is turned off, so that the motor 3a is stopped.

In order to perform the slide closing operation from the fully open position, the closing / tilting up selection side (contacts 1a, 1b side) is switched. In this case, the first relay RL1 is excited and the motor 3a rotates in the same manner as when tilting up,
The roof panel slides towards the fully closed position. When the fully closed position is reached, the first limit switch LS
1 is turned off and the self-holding state of the second relay RL2 shuts off the exciting current to the coil of the first relay RL1 and stops the motor 3a. Also in this case, the self-holding of the second relay RL2 is once released by the reclosing operation of the operation switch 1, so that the second relay RL2 can be restarted.

[0025]

As described above, according to the present invention, in the tilt-up operation and the slide opening operation from the fully closed position,
When the first relay is excited from the limit switch via the non-excited selection contact of the second relay, and when the sunroof panel reaches the fully closed position during tilt down and slide closing operations, the second relay is selected during excitation. The second relay is self-held by the current from the limit switch through the contact, and the non-excitation selection contact connected to the first relay is opened. Therefore, the motor is Since they do not rotate and these configurations are configured by the limit switch and the second and second relays, no inconvenience occurs without using a mechanically complicated mechanism.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a main part of an automobile sunroof device to which the present invention is applied.

FIG. 2 is an explanatory diagram showing the operation of a limit switch.

[Explanation of symbols]

 1 Operation Switch 1a ・ 1b ・ 1c ・ 1d Selection Terminal 1e ・ 1f Common Terminal 2 Control Unit 3 Motor Device 3a Motor

Claims (1)

[Claims] 1. A double-pole double-throw operation switch having both a closed / tilt-up and open / tilt-down selection position and a neutral position therebetween, a motor for driving a sunroof panel, and selection of the operation switch. A first relay that enables energization of the motor so as to rotate the motor in a direction according to a position, and a first relay that is connected in parallel to a coil of the first relay and is in the operation range of the sunroof panel. A second relay having a coil to be excited together with the relay, and a limit switch which is between the common contact of the second relay and the operation switch and which is turned on at least at the fully closed position of the sunroof panel. A non-excited selection contact of the second relay is connected to the coil of the first relay, and an excitation selection contact is connected to the coil of the second relay Sunroof control circuit characterized in that there.