JPH07156726A - Feeding system for slide door - Google Patents

Abstract

PURPOSE:To simplify the constitution b detecting the voltage at the terminal of a junction switch, and operating a closing judging means to judge the closing of a slide door and a power supply relay by a power supply relay control means according to the judgement signal of closing to abolish a switch for detecting the closing of the slide door. CONSTITUTION:When a slide door is closed, terminals of a first junction switch 31 and a second junction switch 34 are connected. Then, the load resistance detecting current flows in normal close terminal 2b of feeding ECU1, a relay contact 2c, feeding terminals 32a, 32b of the first junction switch 31, an easy closer ECU21, an GND terminal, and grounding terminals 33b, 33a. At the same time, a +B terminal of the feeding ECU1, a door detecting input terminal 9, a door lock detecting circuit 18, door lock detecting terminals 35a, 35b of the second junction switch 34, a door detecting output terminal 30, a door detecting output transistor 29, and a door detecting circuit of the GND terminal are closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply system for sliding doors.

[0002]

2. Description of the Related Art A power supply system for a slide door includes a power supply control unit having a power supply control circuit and a power supply relay, and a power supply terminal on the body side and a power supply terminal on the slide door for supplying power from the body side. It is composed of a junction switch for contact and a switch for detecting the closing of a sliding door. Then, based on the operation of the switch for detecting the closing of the sliding door, the power is supplied only when the sliding door is closed. Generally, the junction switch is arranged in a body opening which is opened and closed by a slide door, and the switch for detecting the slide door closing is arranged in a rail portion of the slide door.

[0003]

As described above, since the junction switch and the switch for detecting the closing of the sliding door are separately arranged at different positions, they are slid due to variations in accuracy of parts, mounting errors and body construction. Even if the door closing detection position is displaced, even if the sliding door is closed, the electric mechanism arranged in the sliding door may not be supplied with power and may not operate. Further, since the mounting position and space of the switch for detecting the closing of the sliding door are limited, there is a problem that the structure and mechanism of the switch are complicated and the cost is high. SUMMARY OF THE INVENTION It is an object of the present invention to provide a power supply system which eliminates the slide door closing detection switch in order to solve the above problems.

[0004]

As a concrete means for attaining the above object, as shown in FIG. 1, a slide mechanism is provided for supplying electric power from the body side to an electric mechanism arranged on a slide door. In a power supply system for a slide door equipped with a junction switch that is connected when the door is closed, a closing determination unit that detects a potential of a terminal of the junction switch and determines whether the slide door is closed, and a power supply relay based on a closing determination signal. There is provided a power supply relay control means for operating the power supply system for sliding doors.

[0005]

According to the above construction, the electric potential of the terminal which changes when the terminal of the junction switch is connected when the sliding door is closed is detected, and the closing judgment means judges the closing of the sliding door based on the electric potential. . Then, according to the determination, the power feeding relay control means actuates the power feeding relay, and power feeding to the electric mechanism in the slide door is started.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a schematic block diagram of a power supply system for a sliding door. A power supply control unit (hereinafter referred to as power supply ECU) 1, a power supply circuit 10, and a door lock control unit 11 (hereinafter referred to as door lock ECU) are arranged on the body side. Inside the slide door, a slide door easy closer control unit (hereinafter referred to as an easy closer ECU) 21
Is provided. The power supply ECU 1 and the easy closer ECU 21 are connected via the first junction switch 31 which is connected by closing the slide door. The first junction switch 31 has power supply terminals 32a and 32b and ground terminals 33a and 33b on the body side and the slide door side, respectively. Power supply terminal 32
The circuit closed by a and 32b is used as a load resistance detection and power supply line in the slide door.

The power supply ECU 1 is composed of a power supply relay 2, a timer circuit 3, a load resistance detection circuit 4, a NAND circuit 5, a NOR circuit 6 and NOT circuits 7 and 8. The normally open terminal 2a of the power feeding relay 2 is connected to the (+ B) terminal, the normally closed terminal 2b is connected to the load resistance detection circuit 4, and the relay contact 2c is connected to the (+ BOUT) terminal. The load resistance detection circuit 4 is composed of two comparators 4a and 4b. The (+ B) terminal voltage is applied to the resistors R ₁ and (R ₂ + R) at the non-inverting input terminal of the comparator 4a.
₃ ) and the reference voltage divided by are input, and the inverting input terminal of the comparator 4b is input with the reference voltage obtained by dividing the (+ B) terminal voltage by the resistors (R ₁ + R ₂ ) and R ₃ . . And
The (+ B) terminal is connected to the inverting input terminal of the comparator 4a and the non-inverting input terminal of the comparator 4b via the resistor R ₄ . The comparators 4a and 4b are connected to the NAND circuit 5.

The (+ B) terminal and the door detection input terminal 9 are connected, and the NOT circuit 7 is connected to the connection. The NOT circuit 7 is connected to the timer circuit 3 and the NOR circuit 6. The NAND circuit 5 is also connected to the NOR circuit 6. The power feeding relay 2 and the timer circuit 3 are connected by the NOT circuit 8, and when the timer circuit 3 is off, the relay contact 2c is connected to the normally closed terminal 2b. Also,
The power supply circuit 10 is connected to the (+ B) terminal and a battery voltage is applied. This battery voltage is the door lock ECU
It is also applied to the (+ B) terminal of 11.

The door lock ECU 11 switches the two relays 13 and 14 by operating the door lock switch 12 to connect the door lock motor 15 on the body side and the second junction switch 34 which is connected by closing the slide door. A door lock motor drive circuit 17 for rotating the lock motor 16 in the forward and reverse directions and a door lock detection circuit 18 for detecting the lock of the body side door and the slide door are connected. The door detection input terminal 9 of the power supply ECU 1 and the door lock detection circuit 18 are connected. The second junction switch 34 includes door lock detection terminals 35a, 35b and door lock motor drive terminals 36a, 36b and 37a, 37 on the body side and the slide door side, respectively.
b.

The easy closer ECU 21 has a logic circuit 2
2, forward rotation relay 23, reverse rotation relay 24, cam position switch input circuit 25, half latch switch input circuit 26,
It is composed of a remote control switch input circuit 27, a NOT circuit 28, and a door detection output transistor 29. The (+ B) terminal and the (GND) terminal of the easy closer ECU 21 are
The power supply terminal 32b and the ground terminal 33b on the slide door side of the first junction switch 31 are respectively connected. At the base of the door detection output transistor 29, the (+ B) terminal and the NOT circuit 28 are connected, and the collector and the door detection output terminal 30 are connected. A slide door full lock motor 38 is connected between the forward rotation relay 23 and the reverse rotation relay 24. The cam position switch 39, the half latch switch 40, and the remote control switch 41 are respectively the first junction switch 31.
Is connected to the ground terminal 33b. Further, the door lock detection terminal 35b is connected to the door detection output terminal 30.

The operation of the power supply system for the sliding door having the above-mentioned structure will be described below. When the slide door is closed, the terminals of the first junction switch 31 and the second junction switch 34 are connected. Then, first, the power supply E
(+ B) terminal of CU1 → normally closed terminal 2b of power supply relay → relay contact 2c → (+ BOUT) terminal → first
Power supply terminals 32a → 32b of the junction switch 31
→ (+ B) terminal of the easy closer ECU 21 → easy closer ECU 21 → (GND) terminal → ground terminal 33b → 33a of the first junction switch 31 and the load resistance detection current flows.

Therefore, the comparator 4 of the load resistance detection circuit 4
The input potentials to the inverting input terminal of a and the non-inverting input terminal of the comparator 4b change. This input potential is lower than the reference voltage applied to the non-inverting input terminal of the comparator 4a and higher than the reference voltage applied to the inverting input terminal of the comparator 4b.
Therefore, the (Hi) signal from each of the comparators 4a and 4b is N.
Input to the AND circuit 5 and NOR from the NAND circuit 5
The (Lo) signal is input to the circuit 6. On the other hand, power supply ECU
1 (+ B) terminal → door detection input terminal 9 → door lock detection circuit 18 → door lock detection terminal 35a → 35b of the second junction switch 34 → door detection output terminal 30 →
The door detection circuit of the door detection output transistor 29 → (GND) terminal which is conducted by the load resistance detection current is closed. As a result, the NOT circuit 7 of the power supply ECU 1 outputs N
The (Lo) signal is input to the OR circuit 6.

The NOR circuit 6 includes a NAND circuit 5 and a NOT circuit.
The (Hi) signal is input to the timer circuit 3 by the (Lo) signal from the circuit 7, the timer for 30 seconds is started, the timer signal is output to the NOT circuit 8, and the relay contact 2c of the power feeding relay 2 is normally closed terminal. Switch from 2b to the normally open terminal 2a. Thereby, the battery voltage is 30 seconds, through the first junction switch 31,
Electric power is supplied to the easy closer ECU 21, and the slide door full lock motor 38 is normally driven to be fully locked. After 30 seconds have elapsed, the relay contact 2c of the power feeding relay 2 is switched to the normally closed terminal 2b and the power feeding is terminated.
Further, when the operation of the easy closer ECU 21 is completed, the door detection output transistor 29 is shut off by the easy closer ECU 21. This enables the power supply EUC
The (Hi) signal is output from the NOT circuit 7 of No. 1, the operation of the timer circuit 3 is stopped, the relay contact 2c of the power feeding relay 2 is switched to the normally closed terminal 2b, and the system is turned off.

When the sliding door is opened while the timer circuit 3 is operating, the terminals of the first and second junction switches 31 and 34 are separated from each other, but the door lock detection terminals 35a and 35b of the second junction switch are separated. When the door is separated, the door detection circuit is disconnected. For this reason,
The (Hi) signal is output from the NOT circuit 7 of the power supply ECU 1, the operation of the timer circuit 3 is stopped, and the relay contact 2c of the power supply relay 2 is switched to the normally closed terminal 2b. At this time, the door lock detection terminals 35a and 35b are separated from each other at an earlier timing so that the power supply terminals 32a and 32b and the ground terminals 33a and 33b of the first junction switch 31 are separated from each other after the power supply is stopped to prevent the occurrence of sparks between the terminals. It can be prevented.

When a short circuit occurs between the power supply terminals 32a, 32b of the first junction switch 31 and the ground terminals 33a, 33b, the potential detected by the load resistance detection circuit 4 is input to the comparator 4b as a reference voltage. And the comparator 4b outputs the (Lo) signal. Further, when the first junction switch 31 is in the open state, the potential detected by the load resistance detection circuit 4 becomes higher than the reference voltage input to the comparator 4a, and the comparator 4a becomes (Lo).
Output a signal. Therefore, the timer circuit 3 does not operate in either case.

As described above, the power supply system for the sliding door of the present embodiment detects the short-circuit state between the power supply terminals 32a and 32b of the first junction switch 31 and the ground terminals 33a and 33b so as not to supply power. In addition, the power supply is stopped when the door detection circuit via the door detection terminals 35a and 35b of the second junction switch 34 is cut off. Therefore, even if the mechanical slide door closure detection switch is abolished. It has the advantage of ensuring safety.

[0017]

The power supply system for a sliding door according to the present invention has the above-mentioned configuration, detects the potential of the terminal which changes when the terminal of the junction switch is connected when the sliding door is closed, and based on the potential. The closing determination means determines the closing of the slide door, and the power feeding relay control means actuates the power feeding relay based on the determination to start feeding power to the electric mechanism in the slide door.
The switch for detecting the closing of the slide door can be eliminated, the operation does not become unstable depending on the mounting position of the switch, and the mechanical structure can be simplified and realized at low cost.

[Brief description of drawings]

FIG. 1 is a diagram corresponding to a complaint.

FIG. 2 is a schematic block diagram of a power supply system for a slide door according to the present invention.

[Explanation of symbols]

 1 Power Supply ECU 2 Power Supply Relay 3 Timer Circuit 4 Load Resistance Detection Circuit 9 Door Detection Input Terminal 29 Door Detection Output Transistor 30 Door Detection Output Terminal 31 First Junction Switch 32a, 32b Power Supply Terminal 33a, 33b Earth Terminal 34 Second Junction Switch 35a , 35b Door lock detection terminal

Claims (1)

[Claims] 1. A power supply system for a slide door, comprising a junction switch connected when the slide door is closed so as to supply power to an electric mechanism arranged on the slide door from the body side. The power supply system for a slide door, comprising: a closing determination unit that detects the potential of the terminal of 1 to determine whether the slide door is closed; and a power supply relay control unit that operates a power supply relay according to a closing determination signal.