JPH0330526B2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a sliding roof for a vehicle, etc., which uses an electric drive device to drive a sliding roof according to opening/closing, tilt up and down modes. The present invention relates to a roof control device.

[Background] In this type of control device, the electric drive device is preferably used for opening/closing the sliding roof, tilt up and down modes,
To this end, the configuration is such that the position of the sliding roof is detected and the operating state of the electric drive device is changed. In this case, a detection member that is linked to the position of the sliding roof is provided, but if a failure occurs in the detection member, a problem arises in that the sliding roof cannot be moved to a desired position.

[Object of the invention] The main object of the invention is to provide a sliding roof control device in which the above-mentioned problems are eliminated.

[Structure of the Invention] In order to achieve the above object, the present invention includes a command signal generating means for generating a signal for commanding opening/closing, tilting up and down of the sliding roof; position signal generating means for generating a signal, and logic means responsive to the signals from both of the signal generating means, the sliding roof can be operated in one of the opening, closing, tilt-up, and tilt-down modes. A second logic means is provided which operates an electric actuator to bring the sliding roof to an arbitrary position, at least a fully closed state, when the logic means is inoperable. It is characterized by

That is, in the present invention, the second logic means:
In response to at least two signals from the command signal generating means, the electric drive generates a signal for reversibly moving the sliding roof independently of the signal from the position signal generating means when each signal continues for a predetermined time or more. For example, in response to a signal instructing closing of the sliding roof and a signal instructing tilt-down, the signal is The present invention is configured to generate a signal that causes the electric drive device to operate the sliding roof in the close and tilt-down modes, regardless of the signal from the command signal generating means, when the electric drive continues for a predetermined time or more.

The second logic means can be constructed as completely different hardware from the (first) logic means, as shown in the following embodiments, or it can be constructed as a function implementation means included in one microcomputer. You can also do that.

[Example] The present invention will be described below based on an example shown in the accompanying drawings. In FIG. 1 showing the overall configuration of the embodiment, reference numeral 10 denotes a DC motor that serves as the drive source of the electric drive device, and its rotation direction is switched according to the polarity of the DC voltage applied to both terminals 10A and 10B. . From terminal 10A to terminal 10B of motor 10
When current flows from terminal 10B to terminal 10A, this is called forward rotation, and when current flows from terminal 10B to terminal 10A, this is called reverse rotation.

The output shaft of the motor 10 is coupled to a sliding roof movably disposed on the roof of the vehicle via a reduction mechanism, a clutch, and a link mechanism (not shown), as is known in the art. Here, the link mechanism is configured such that when the motor 10 is in a normal rotation state, the sliding roof moves from an open state to a fully closed state, and when the motor 10 continues to rotate in the normal direction, the sliding roof is tilted up. 10 and the movement of the sliding roof. On the contrary, the link mechanism
When 0 is in the reverse state, the motor 10 is associated with the sliding roof so that the sliding roof is tilted down from the tilt-up state and further moved from the fully closed state to the fully open state.

The sliding roof is opened/closed and tilted up and down in accordance with command signals generated by manual operation of switches 11-14.
Among the switches 11 to 14, the open switch 11 and the close switch 12 are of a so-called seesaw type,
Normally, both contacts are open due to the action of a spring, but the switch 11 is closed by pressing one of the operation buttons marked "Open", and the switch 11 is closed by pressing the other button marked "Close". 12 is configured to close, and the low level signal generated at each normally open output contact is used as a signal for commanding opening or closing of the sliding roof. The tilt up switch 13 and the down switch 14 are also of a seesaw type, and use low level signals generated at their respective output contacts as signals for instructing the sliding roof to tilt up and down.

As mentioned above, the rotation of the motor 10 in one direction is
The sliding roof can be operated in two modes: closing operation and tilt-up operation, and rotation in the other direction can be operated in two modes: opening operation and tilt-down operation, so the sliding roof can be moved to the stop position (fully closed position). As a boundary, it is necessary to detect whether it is in the open or closed movement position, or in the tilt-up or down movement position, and to select the above two modes depending on the movement position. For this purpose and to give meaning to the movement of the sliding roof as described later, three types of position detection switches 15, 16, 17 are used.
is provided.

These position detection switches 15 to 17 are provided at appropriate positions between the motor 10 and the sliding roof, and each generates a position signal shown in FIG. 2 in correspondence with the position of the sliding roof.
For example, these switches 15 to 17 have grooves cut into a cylinder body provided to rotate in conjunction with the final gear of a reduction mechanism, and movable contacts move relatively along the grooves to open and close the contacts. It is configured as follows. In Fig. 2, the position labeled "UP" indicates the apex where the sliding roof is tilted up, the "CLOSE" position indicates the fully closed position (stop position),
The "100" position represents a position 100mm away from the fully closed position in the open direction, and the "open" position represents the fully open position.

The first logic circuit 18 receives the command signals generated in the switches 11 to 14 for generating command signals and the position signals generated in the position detection switches 15 to 17 for generating position signals, and moves the sliding roof to the produces an output signal for operating according to a selected one of four operating modes.

The second logic circuit 19 connects the switches 11 to 1
7 in parallel with a first logic circuit 18, and generates an output signal for operating the sliding roof independently of the first logic circuit 18. Detailed internal functions of the first and second logic circuits 18 and 19 will be explained later.

The output terminals of both logic circuits 18 and 19 are commonly connected as terminals 18A and 18B. Relay drive transistors 20 and 21 are connected to each of these output terminals 18A and 18B, and each transistor 20 and 21 is connected to a first relay 22 and a second relay 22, respectively.
23 relay coils 22A and 23A are connected as loads. Each relay 22, 23 has a relay contact 22B, 23B energized by a respective relay coil 22A, 23A. Each relay contact includes a movable contact, a normally open contact connected to a power line, and a normally closed contact connected to a ground line. A movable contact of the first relay 22 is connected to a terminal 10A of the motor 10, and a movable contact of the second relay 23 is connected to a terminal 10B of the motor 10.

Therefore, when a high level signal is generated at the output terminal 18A of the logic circuit, the conduction of the transistor 20 energizes the first relay 22 and its movable contact conducts with the normally open contact. A downward current is passed. At this time, motor 10
rotates in the forward direction as described above, driving the sliding roof in the closing direction or tilt-up direction. on the other hand,
When a high level signal is generated at the output terminal 18B of the logic circuit, the second relay 23 is energized by the conduction of the transistor 21, and the motor 10 is activated.
A current in the opposite direction to that described above is passed through, and the sliding roof is driven in the opening direction or tilt-down direction by reversing the motor 10.

Next, the operation of this device will be explained together with the internal configuration of logic circuits 18 and 19 and their functions. In the figure, reference numeral 24 denotes a pull-up resistor that generates high-level and low-level command signals or position signals at respective output terminals in response to the opening and closing of the switches 11 to 17.

Now, assuming that the sliding roof is "closed", that is, in the fully closed position (stop position), and the opening switch 11 is closed, a case will be described. When the switch 11 is closed, a high level signal appears at the output terminal of the inverter 25, and the position detection switch 1
5 and 16 generate low level and high level signals, respectively, as shown in Figure 2.
Since a high level signal also appears at the output terminal of the NAND gate 26, a high level signal appears at point A, thereby generating a high level signal at the output terminal 18B of the logic circuit. Therefore, as described above, the motor 10 rotates in reverse and drives the sliding roof in the opening direction.

While the sliding roof continues to be driven in the opening direction, at least one of the position detection switches 15 and 16 generates a low level signal as shown in FIG.
A high level signal appears. Therefore, while the open switch 11 continues to be closed, a high level signal appears at point A and the motor 10 continues to rotate in reverse.

If the sliding roof driven by the motor 10 moves to the fully open position, the clutch mechanism will slip and absorb the driving force applied to the sliding roof.

When the opening switch 11 is turned off when the sliding roof reaches a desired opening while the sliding roof is moving in the opening direction, a low level signal appears at point A, so a low level signal is also sent to the output terminal 18B. occurs, and the reverse rotation of the motor 10 is stopped.

In addition, in the above operation, the logic circuit 18,
The other circuit elements in 19 do not interfere with the operation described above with respect to the high level signal occurring at the output terminal 18B and the low level signal occurring at the output terminal 18A.

Next, a case will be described in which the close switch 12 is turned on when the sliding roof is fully open or between the "fully open" and "100" positions.

When the close switch 12 is closed, the Noah gate 2
One input signal of NAND gate 7 becomes low level, and after a certain time t determined by timer circuit 28, a high level signal is applied to one input of NAND gate 30 via inverter 29.

At this time, since the other input of the NAND gate 31 is given a low level signal from the position detection switch, the NAND gate 30 is connected to the next stage.
A high level signal is given to one input of the NAND gate 31. Since a high level signal is applied to the other input of the NAND gate 31 via the inverter 32, the NAND gate 32 applies a low level signal to the other input of the NOR gate 27.

As a result of the above, a high level signal appears at the output terminal of the NOR gate 27, and in response to the high level signal generated at the output terminal 18A of the logic circuit, the motor 10 rotates forward and drives the sliding roof in the closing direction. do.

If the close switch 12 is turned off while the sliding roof is moving, the input signal from the switch 12 will become high level.
NOR gate 27 generates a low level signal to stop normal rotation of motor 10.

When the sliding roof reaches the "100" position during its movement in the closing direction, the position detection switch 15 produces a high level signal. At this time,
Since both inputs of the NAND gate 30 become high level after the above-described predetermined time t has elapsed, a low level signal appears at its output, and a high level signal appears at the output of the NAND gate 31 at the next stage. Therefore, a low level signal is generated at the output terminal of the inverter 27, and the forward rotation of the motor 10 is temporarily stopped.

In order to start moving the sliding roof again after it has stopped at the "100" position, the close switch 12 is once released to charge the timer circuit 28, and then the close switch 12 is turned on again. In other words, even after the close switch 12 is turned on again, the inverter 29 outputs a low level signal for a certain period of time t (slightly longer than the time required for the sliding roof to overcome the "100" position due to normal rotation of the motor 10). During this period, the output of the NAND gate 30 is masked from becoming low level by the signal from the position detection switch 16. During this mask period, a low level signal also appears in the NAND gate 31, so that a high level signal is generated at the output of the inverter 27 of the motor 10, and the motor 10 rotates in the normal rotation direction. After the mask period has elapsed, the motor 10 rotates normally in the same manner as described above.

When the sliding roof reaches the fully closed position by normal rotation of the motor 10, the second position detection switch 16 generates a high level signal, so the output of the inverter 32 changes to low level.
A high level signal appears at the output of NAND gate 31 and a low level signal appears at the output of NOR gate 27. Therefore, the output terminal 18 of the logic circuit
A low level signal is generated at A, the normal rotation of the motor 10 is stopped, and the movement of the sliding roof is stopped. In the above operation, circuit elements other than those described do not interfere with the above operation.

Next, a case will be described in which the tilt-up switch 13 is turned on when the sliding roof is in the fully closed position. In this embodiment, once tilt-up switch 13 and tilt-down switch 14 are turned on, even if they are released, logic circuit 18 generates a timer signal to keep motor 10 at a predetermined level until the tilt-up or tilt-down is completed. It is configured so that it continues to rotate in the same direction.

Now, when the tilt-up switch 13 is closed, a low level signal appears at its output terminal, and the timer circuit 33 applies a low level signal to one input of the NOR gate 34 for a predetermined period of time from that time. At that time, the third position detection switch 1
7 is still at a high level, and the moment the tilt-up switch 13 closes, the diode 35
The timer circuit 36 is also activated via the NOR gate 34, and a low level signal is also applied to the other input of the NOR gate 34. Therefore, a high level signal appears at the output of the NOR gate 34, and as a result, the logic circuit 18
A high level signal is generated at the output terminal 18A.

The first transistor 20 becomes conductive due to the high level signal generated at the output terminal 18A.
The relay 22 is energized, and the motor 10 rotates normally. At this time, the sliding roof begins to be driven from the fully closed position to the tilt-up position via the link mechanism.

When the sliding roof moves slightly from the fully closed position to the tilt up position, the third position detection switch 17 closes and generates a low level signal. Therefore, the timer circuit 36 continues to provide a low level signal to the NOR gate 34.
On the other hand, even if the tilt-up switch 13 is released and produces a high-level signal, the timer 33 continues to supply a low-level signal to the NOR gate 34 for a predetermined period of time (sufficient time for the sliding roof to reach the tilt-up position).

When the sliding roof approaches the tilt-up position, the third position detection switch 1
7 opens to produce a high level signal. When this signal is given to the timer circuit 33 via the diode 33A, the timer circuit 33 generates a high level signal after a short time (at the same time, the timer circuit 36 also generates a low level signal).
As a result, the NOR gate 34 generates a low level signal and a low level signal is generated at the output terminal 18A of the logic circuit 18, so that the normal rotation of the motor 10 is stopped and the movement of the sliding roof is also stopped.

Next, the operation when the tilt down switch 14 is turned on when the sliding roof is in the tilt up position will be described. Now, when the tilt down switch 14 is closed and a low level signal is generated, the timer circuit 37 applies a low level signal to the NOR gate 38. Even if the switch 14 is opened, the timer circuit 37 continues to apply a low level signal for a predetermined time (a time sufficient for the sliding roof to reach the fully closed position).

On the other hand, the first and second position detection switches 15,
16 both generate high level signals as shown in FIG. 2, so the output of the NAND gate 26 also provides a low level signal to the NOR gate 38, so the NOR gate 38 generates a high level signal at its output terminal. . This high level signal is applied to the second transistor 21 from the output terminal 18B of the logic circuit 18, and energizes the second relay 23. As a result, the motor 10 starts reverse rotation and maintains the reverse rotation state.

When the sliding roof approaches the fully closed position due to the reverse rotation of the motor 10, the output signal of the first detection switch 15 changes to a low level. In response to this, the output of the NAND gate 26 becomes high level, and the output signal of the NOR gate 38 also changes to low level. Therefore, the motor 10 stops rotating in reverse, and the movement of the sliding roof stops at the fully closed position.

The operations explained above are based on the internal operations of the first logic circuit 18, and are possible when the position signals generated by the first to third position detection switches 15 to 17 are generated normally. It is something.

If the position detection switches 15 to 17 no longer generate a position signal corresponding to the position of the sliding roof, or if a failure occurs inside the first logic circuit 18, this device will
Part or all of the operations corresponding to command signals 1 to 14 are invalidated.

The second logic circuit 19 responds to the low level signal generated by operating the close switch 12 or the tilt down switch 14 when the sliding roof stops at an undesired location in such a situation. It has a function of making it possible to reversibly rotate the motor 10 in response.

The second logic circuit 19 has a timer circuit 39, which has a diode 40,
It is connected to the close switch 12 and the tilt-down switch 14 via 41. The timer 39 is
Capacitor 42, charging resistor 43, discharging resistor 4
4, 45, and a diode 46. Therefore, when either the close switch 12 or the tilt-down switch 14 is turned on, the capacitor 42 is connected to the resistor 43 and the diodes 40, 41.
The current flowing through the switches 12 and 14 gradually charges the switches 12 and 14. Therefore, the terminal voltage B of the capacitor 42 gradually decreases from a high level toward a low level. This charging time constant is set to obtain a time limit longer than the time required for the sliding roof to be moved from the fully open position to the fully closed position by normal rotation of the motor 10. It has been done.

The output point B of the timer circuit 39 is connected to two NOR gates 47 and 48, one NOR gate 47 is connected to the close switch 12, and the other NOR gate 48 is connected to the tilt down switch 14.

Assuming that the sliding roof is now between the fully closed position and the fully open position and the first logic circuit 18 does not operate the motor 10 even if the close switch 12 is turned on, the second logic circuit 19 operates. explain.

When the close switch 12 is turned on and a low level signal continues to be generated at its output terminal, the NOR gate 4
7 becomes a low level, and the voltage at the output point B of the timer circuit 39 becomes less than the input threshold of the NOR gate 47 after a predetermined time period, and the NOR gate 47 generates a high level output signal. By generating this signal, even if the output of the NOR gate 27 in the first logic circuit 18 is at a low level, a high level signal can be generated at the output terminal 18A.

Therefore, the motor 10 rotates normally and drives the sliding roof in the closing direction. After a predetermined period of time has elapsed, the motor 10 is further rotated until the close switch 1 is turned on.
Continues while 2 is injected. Close switch 1 when sliding roof reaches desired position
When 2 is opened, the output of the Noah gate 47 changes to high level, and the output becomes high level, so
The motor 10 immediately stops and the sliding roof also stops at that position. Therefore, by opening the switch 12 when the sliding roof reaches the fully closed position, the sliding roof can be stopped at that position.

If the close switch 12 continues to be closed, the motor 10 of this embodiment continues to rotate in the normal direction, and the sliding roof is driven in the tilt-up direction. Therefore, with this device, the sliding roof can be stopped at any position between the fully closed position and the tilt-up position.

If the sliding roof is to be driven in the tilt-down direction when the first logic circuit 18 does not function, the tilt-down switch 14 may be kept turned on.

In this case, the output signal of the timer circuit 39 becomes valid for the NOR gate 48, and the output of the NOR gate 48 changes to a high level after a predetermined time has elapsed after the tilt-down switch 14 is closed.
The output terminal 18B of the logic circuit 18 receives this high-level signal and makes the second transistor 21 conductive, so that the motor 10 can rotate in reverse and drive the sliding roof in the tilt-down direction.

If the tilt-down switch 14 is opened when the sliding roof moves to a desired position, the output of the Noah gate 48 will change to low level as described above, so the motor 10 will be stopped and the sliding roof will be stopped at that position. can be done.

If the tilt-down switch 14 is held down, the motor 10 continues to rotate beyond the fully closed position, and the sliding roof can also be stopped at any position between the fully closed and fully open positions.

Once the close switch 12 or the tilt-down switch 14 is turned on and then opened, the capacitor 42 in the timer circuit 39 is rapidly discharged via the resistors 44, 45 and the diode 46. Therefore, with this device, even if you try to move the sliding roof by turning on the switch 12 or tilt-down switch 14 again,
The system waits once again for the time limit of the timer circuit 39 mentioned earlier.

Thus, the device of this embodiment allows the second logic circuit 1 to function even if the first logic circuit 18 becomes inoperable.
9 is the close switch 12 and the tilt down switch 14
In response to this, the motor 10 can be operated reversibly to drive the sliding roof to at least the fully closed position, and depending on the operating method, the sliding roof can be moved to any position from the fully open position to the tilt up position. can be stopped.

Note that the present invention is not limited to the embodiments described above, and can be modified and implemented within the scope of the claims.

For example, by connecting the open switch 11, the tilt-up switch 13, and the timer circuit 39, and combining it with a gate circuit similar to the NOR gates 47 and 48, it is possible to move the sliding roof using the open switch 11 or the tilt-up switch 13. It can also be done. Further, the second logic circuit 19 may be activated in response to all the command switches 11 to 14 used.

Furthermore, the present invention can be applied to the case where a potentiometer is used as a position signal generating means instead of the position detection switches 15 to 17 of the above embodiment, and the manually operated switches 11 to 14 are used as a command signal generating means. Instead, it is also applicable when using a recognition device that responds to the voice of the occupant.

Furthermore, another timer function may be added such that the second logic means 19 sets a limit on the generation time of the signal generated to activate the electric drive.

[Effects of the Invention] As described in detail above, the present invention responds to at least two command signals from the command signal generating means, and when each signal continues for a predetermined time or longer, the signal from the position signal generating means is ignored. By providing logical means for giving a signal to the electric drive device to reversibly move the sliding roof, even if the position signal generating means fails or a failure occurs in the internal circuit, the sliding roof can be moved at least completely. It can be moved to the closed position.

[Brief explanation of the drawing]

FIG. 1 is an electrical wiring diagram of a device according to an embodiment of the present invention, and FIG. 2 is a characteristic diagram showing a detection pattern of a position detection switch used in the device. 10...Motor that forms the main part of the electric drive device,
11, 12, 13, 14... Open switch, close switch, tilt up switch, and tilt down switch forming command signal generating means, 15, 1
6, 17...First to third position detection switches forming position signal generating means, 18...First logic circuit forming first logic means, 19...Second logic circuit forming second logic means logic circuit.

Claims (1)

[Scope of Claims] 1. An electric drive device that drives a sliding roof to open and close the sliding roof and to tilt up and down the sliding roof; command signal generating means for generating a signal for commanding the sliding roof; position signal generating means for generating a signal corresponding to the position of the sliding roof; opening of the sliding roof in response to signals from both of the signal generating means; first logic means for operating the electric drive to select one of the following modes: close, tilt up, and tilt down; responsive to at least two command signals from the command signal generating means; A sliding roof control comprising second logic means for giving a signal to the electric drive device to reversibly move the sliding roof irrespective of the signal from the position signal generating means when the signal continues for a predetermined time or more. Device. 2. The second logic means generates a signal for moving the sliding roof in the closing direction in response to a command signal from the command signal generation means to close the sliding roof, and 2. The sliding roof control device according to claim 1, wherein the sliding roof control device generates a signal for moving the sliding roof in a direction to tilt it down in response to a command signal to tilt the sliding roof down.