JPH06197595A - Witch circuit - Google Patents

Abstract

PURPOSE:To control a motor in corresponding to the operation of switches performed in priority order even when a plurality of switches corresponding to the same motor is simultaneously operated. CONSTITUTION:A plurality of motors 2-4 and a plurality of switches 201-20c which are respectively made to correspond in advance to the motors 2-4 are provided. Then a power window control unit 10 which detects an operated switch out of the switches 20a-20c and generates the operating signal corresponding to the operated switch is provided. The unit 10, in addition, stores the priority order given to the switches 20a-20c. Moreover, the switches are divided into a first and second switch groups and a main switch MSW which only makes either one of the switch groups effective is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch circuit suitable for controlling a power window or the like in an automobile.

[0002]

2. Description of the Related Art Conventionally, an automobile equipped with a power window function for opening and closing a window glass of a vehicle door up and down according to a switch operation has been put into practical use. FIG. 2 is a circuit diagram showing a configuration example of a conventional switch circuit for controlling a power window. In this figure, reference numerals 2 to 4 denote power window motors (hereinafter, referred to as motors), which open / close the window glass by rotating in the forward / reverse direction in accordance with a switch operation described later. Where motor 2
Is for opening and closing the window on the passenger seat side, the motor 3 is for opening and closing the window on the left side of the rear seat, and the motor 4 is for opening and closing the window on the right side of the rear seat.

Reference numerals 5 to 8 denote operation switches provided inside the seat doors corresponding to the motors 2 to 4, respectively. The operation switch 5 arranged on the driver's seat side (hereinafter, referred to as a driver's seat switch) includes switches 5a to 5f and a main switch MSW. Originally, in the main unit 9 disposed inside the driver's door, in addition to the driver's seat switch 5 described above, a motor n for opening and closing a window on the driver's seat side and a switch corresponding to the motor n. 5
It means that n and are installed. However, since the present invention focuses on the function of remotely controlling the opening and closing of the windows of the seat doors in the driver's seat switch 5, the description of the motor n and the switch 5n is omitted here.

In the driver's seat switch 5, one of the bidirectional contacts of the switches 5a to 5f has a fuse F.
It is connected to the drive power source + Vd via S, and the other is grounded via the main switch MSW. The common terminals of the switches 5a to 5f are connected to one of the bidirectional contacts of the operation switches 6 to 8, respectively. That is, the common terminals of the switches 5a and 5b are connected to one of the bidirectional contacts of the switches 6a and 6b, respectively, and the other of the bidirectional contacts of the switches 6a and 6b is connected to the drive power source + Vd. Similarly, the switches 5c and 5
The common terminal of d is connected to one of the bidirectional contacts of the switches 7a and 7b, respectively, and the other of the bidirectional contacts of the switches 7a and 7b is connected to the drive power source + Vd. Further, the common terminals of the switches 5e and 5f are connected to one of the bidirectional contacts of the switches 8a and 8b, respectively, and the other of the bidirectional contacts of the switches 8a and 8b is connected to the drive power source + Vd.

In such a configuration, when the main switch MSW is set to the ON state, the switch 5e is connected to the drive power source side, and the switch 5f is grounded,
A drive current from the switch 5e side to the switch 5f side is given to the motor 2. On the contrary, when the contact of the switch 5e is grounded and the contact of the switch 5f is connected to the drive power source side, a drive current flowing from the switch 5f side to the switch 5e side is given to the motor 2. To be As a result, the motor 2 is normally / reversely rotated according to the operation of the switches 5e and 5f, and the window on the driver's seat side is opened / closed.

Similarly, the main switch MSW is set to the ON state, and as shown in FIG.
When the bidirectional contacts 8b are connected to the common terminals of the switches 5a to 5f, the motor 3 rotates in the normal / reverse direction according to the operation of the switches 5c and 5d. In addition, switch 5
The motor 4 rotates forward and backward in response to the operation of a and 5b. Therefore, the window of each seat can be opened and closed from the driver's seat.

On the other hand, the main switch MSW is set to the ON state and, as shown in the figure, the switches 5a to 5f.
When the other of the two bidirectional contacts is grounded, the motor 4 rotates normally and reversely according to the operation of the switches 6a and 6b, and the motor 3 rotates normally and reversely according to the operation of the switches 7a and 7b.
Further, the motor 2 rotates in the forward and reverse directions according to the operation of the switches 8a and 8b. Thereby, the window can be opened and closed independently of each seat.

[0008]

By the way, in the above-mentioned conventional switch circuit, the main switch MSW of the driver's seat switch 5 for operating the power window of the driver's seat.
When the switch is in the off state, the operation of the switches 6 to 8 is not accepted. However, if the main switch MSW is turned off, that is, if the power window operation in both the passenger seat and the rear seats is prohibited,
There has been a problem that the operation of the driver's seat switch 5 in the main unit 9 arranged on the driver's seat side is also prohibited (locked state) at the same time. In this state, the main unit 9 controls the power window of each window.
There was a problem that the original purpose could not be met.

Further, for example, when the passenger seat power window operation switch 5a is "UP" while the passenger seat power window operation switch 6 is "DN", the corresponding motor 4 is being driven. Even then, there was a problem that it would stop. As described above, there is a problem that the window glass does not move, that is, a so-called locked state, even though any of the power window operation switches 5 to 8 is operated.

Further, for example, when the driver's seat switch 5a is in the "UP" state, the passenger seat switch 6 is
When the switch is slowly moved to the "UP" state, the switch 6 becomes a non-contact state, and at this time, both switches 5a, 6
Is in the "UP" state, the drive of the motor 4 is stopped, and as a result, the window glass also remains stopped. In other words, the switch 5a
The operation of 1 depends on the state of the switch 6.
It is extremely rare that the above-mentioned phenomenon actually occurs, but between the switch 5b and the switch 6 and the switch 5
between c and 5d and switch 7, or switch 5
The same occurs between the switches e and 5f and the switch 8, which has been a problem.

The present invention has been made under such a background, and even if a plurality of switches corresponding to the same motor are simultaneously operated, the motors are operated according to the switch operation according to a predetermined priority order. It is an object of the present invention to provide a switch circuit capable of controlling the switch.

[0012]

According to a first aspect of the present invention, there is provided a switch circuit comprising a plurality of motors and a plurality of switches previously associated with each of the motors. Switch operation detecting means for detecting an operated switch and generating an operation signal corresponding to the switch content; priority order storing means for storing a priority order given to each of the plurality of switches; and the switch operation detection. Drive control means for driving and controlling a motor corresponding to the switch detected by the means in accordance with the operation signal, the drive control means comprising a plurality of operation signals from the switch operation detection means at substantially the same time. When receiving the priority, the priority is read from the priority storage means, and drive control is performed according to the operation signal having the highest priority. It is. The switch circuit according to claim 2, wherein the plurality of switches include a first switch group and a second switch group.
When the main switch included in the first switch group is operated, the switch operation detecting means enables only one of the first switch group and the second switch group. Is characterized by.

[0013]

According to the above construction, when the plurality of first switches and the second switches corresponding to the same motor are switched at substantially the same time, the switch operation detecting means has the switches that have been switched. Among them, the switch having the highest priority is discriminated and the operation signal corresponding to the switch contents is generated. Therefore, even when a plurality of switches corresponding to the same motor are operated at the same time, it is possible to drive the motor according to the switch operation according to a predetermined priority order.

[0014]

[Example] §1. Configuration of Embodiments An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a switch circuit according to an embodiment of the present invention. In this figure, parts corresponding to those in FIG. 2 are assigned the same reference numerals and explanations thereof are omitted. The embodiment shown in this figure differs from the switch circuit shown in FIG. 2 in that the switches 20 to 23 are switched ("U
P "/" DN ") is detected as an input of an independent switch, and the output is determined by the combination of the input states of a plurality of switches.

In FIG. 1, 10 is a CPU, R (not shown).
A power window control unit including an OM, a RAM, and the like, and has a switching function of switching between terminals connected to the switch circuit. Further, 20 is a switch 20a including a bidirectional contact.
20c and a main switch MSW, which is a driver's seat switch disposed inside the driver's seat door. In this driver's seat switch 20, each switch 20a to 20c
Is connected to the control unit 10 on the contact T ₁ side and the contact T ₂ side, respectively, and the common terminal CT is grounded via the power window control unit 10.

Similar to the switch 20, in the switches 21 to 23 arranged on each seat door, the contact T ₁ side and the contact T ₂ side are connected to the control unit 10, respectively, and the common terminal CT connects the unit 10. Grounded through.

By the way, in such a configuration, when the above-mentioned main switch MSW is in the off state, the power window control unit 10 detects only the operation on each of the switches 20a to 20c in the main unit 9.
On the other hand, when the main switch MSW is in the ON state, the power window control unit 10 includes all the switches 20 to 20.
The operation to 23 is detected. Further, in the power window control unit 10 described above, the priorities of the switches 20 to 23 corresponding to the same motor are preset.
Therefore, for example, the operated plurality of switches 20-2
If there are switches 20 to 23 assigned to the same motors 2 to 4 among the three, the power window control unit 10 executes the following processing. That is, the operation of the switches 20 to 23 having the highest priority is adopted, and the operation content of the switches 20 to 23 is validated.

§2. Operation of the Embodiment (1) When the Main Switch MSW is in the Off State Next, the operation of the switch circuit having the above configuration will be described. In addition, here, for example, the main switch MSW described above is in the OFF state, and the switches 20 to 23 are provided.
The common terminal CT of is not connected to any of the contacts T ₁ and T ₂ and is in a neutral state.

First, when the common terminal CT of the switch 20a is connected to the contact T ₁ side, the CPU in the power window control unit 10 detects this. Then, the drive power source + Vd is applied to the contact T _{1 of the} switch 20a, the common terminal CT is grounded, and the drive current is applied to the motor 2. On the other hand, conversely, connecting the common terminal CT of the switch 20a to the contact T ₂ side, the contact point T ₂ of the said switches 20a driving power + Vd is applied, the common terminal CT
Is grounded and a drive current is applied to the motor 2.
Further, connecting the common terminals CT of switches 20b to the contact T ₁ side, driving power + Vd is applied to said contact T _1,
The common terminal CT is grounded and a drive current is given to the motor 3. On the other hand, connecting the common terminals CT of switches 20b to the contact T ₂ side, the contact point T ₂ of the said switch 20b is applied drive power source + Vd, the common terminal CT is at ground, the drive current is applied to the motor 3 . Furthermore, if the common terminal CT of the switch 20c is connected to the contact T ₁ side,
A driving current + Vd is applied to the contact T ₁ , and the common terminal C
T becomes the grounded state, and the drive current is applied to the motor 4. On the other hand, if it is connected to the contact T ₂ side of the switch 20c,
The drive power source + Vd is applied to the contact T _{2 of the} switch 20c, the common terminal CT is grounded, and the drive current is applied to the motor 4.

As a result, by switching the common terminal CT of the switches 20a to 20c to "UP (contact T ₁ side)" or "DN (contact T ₂ side)", the motors 2 to 4 are switched from the driver seat switch 20 side. It becomes possible to rotate forward and reverse. Further, since the main switch MSW is in the off state, for example, in the case where the switch 20a and the switch 21, the switch 20b and the switch 22, or the switch 20c and the switch 23 are operated at the same time. However, switch operations other than the driver's seat switch 20 are invalid.

(2) When the main switch MSW is in the ON state (single) Next, the main switch MSW is in the ON state, and
The operation when the switches 21 to 23 are individually operated will be described. For example, when the common terminal CT of the switch 21 is connected to the contact T ₁ side, the CPU in the power window control unit 10 detects this. Then, the drive power source + Vd is applied to the contact T _{1 of the} switch 21, the common terminal CT is grounded, and the drive current is applied to the motor 2. On the other hand, on the contrary, when the common terminal CT of the switch 21 is connected to the contact T ₂ side, the drive power source + Vd is applied to the contact T _{2 of the} switch 21, the common terminal CT is grounded, and the drive current is Are given to the motor 2. Further, when the common terminal CT of the switch 22 is connected to the contact T ₁ side, the drive power supply + Vd is applied to this contact T ₁ and the common terminal CT is grounded, and as a result, the drive current is given to the motor 3. . On the other hand, the common terminal C of the switch 22
When T is connected to the contact T ₂ side, the contact T _{2 of the} switch 22
Is applied with a drive power source + Vd, the common terminal CT is grounded, and a drive current is applied to the motor 3. further,
When the common terminal CT of the switch 23 is connected to the contact T ₁ side, the drive power supply + Vd is applied to this contact T ₁ , the common terminal CT is grounded, and as a result, the drive current is given to the motor 4. On the other hand, the common terminal CT of the switch 23
Is connected to the contact T ₂ side, the drive power supply + Vd is applied to the contact T _{2 of the} switch 23, the common terminal CT is grounded, and the drive current is supplied to the motor 4. As described above, when the main switch MSW is turned on, the power window can be operated up and down from both the passenger seat and the rear seats.

(3) Main switch MSW is in ON state (plurality) Next, the main switch MSW is in ON state, and
A case where the plurality of switches 20 to 23 are operated will be described. For example, the common terminal CT of the switch 20a
Is connected to the contact T ₁ side and the common terminal CT of the switch 21 is connected to the contact T ₂ side, the CPU in the power window control unit 10 detects this. here,
When the switches 20a and 21 are simultaneously operated, the CPU
Operates in accordance with a predetermined priority order in response to an operation on a switch having the highest order (for example, switch 20a). Therefore, the driving power source + Vd is applied to the contact T ₁ of the switch 20a, the common terminal CT is grounded, and the driving current is supplied to the motor 2. Also, for example,
Even when the common terminal CT of the switch 20b is connected to the contact T ₂ side and then the common terminal CT of the switch 22 is connected to the contact T ₂ side, the operation corresponding to the switch operation having the highest priority is performed. As described above, since the state of each switch can be detected independently, it is possible to operate any auxiliary machine (power window) with any switch 20 to 23 without changing the wiring. Is. Also, the priority order of the switches 20 to 23 can be arbitrarily set.

Although the description has been given here assuming that the switches 20a and 21 are simultaneously operated, the present invention is not limited to this, and a plurality of switches 20 to 23 corresponding to the same motors 2 to 4 are operated at the same time. Then, it is possible to selectively control the normal rotation / reverse rotation of the motors 2 to 4 according to the operation of the switch having the highest priority.

[0024]

As described above, according to the present invention,
A switch operation detecting means for detecting an operated switch among the plurality of switches and generating an operation signal corresponding to the contents of the switch, and a priority order storing means for storing a priority order given to each of the plurality of switches. Since the motor corresponding to the switch detected by the switch operation detecting means is provided with the drive control means for controlling the drive in accordance with the operation signal, ON / OFF switching of each switch is separately performed for each switch. If any key operation is performed on the same motor at the same time, it is possible to set which key state has priority, so that the motor can be operated according to the key operation by any key operation. A switch circuit that can be driven can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a switch circuit according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration example of a conventional switch circuit.

[Explanation of symbols]

2, 3, 4 ... Motor, 9 ... Main unit (first switch group), 10 ... Power window control unit (switch operation detection means, priority storage means, drive control means), 20 ... Driver switch (First switch group), 20a, 20b, 20c ... Switch (first switch group), 21, 22, 23 ... Switch (second switch group), FS ... Fuse, MSW ... Main switch (first switch) Switch group).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoki Goshima 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Ltd.

Claims (2)

[Claims] 1. A switch circuit comprising a plurality of motors and a plurality of switches associated with each of these motors in advance, detecting an operated switch among the plurality of switches and responding to the contents of the switch. A switch operation detecting means for generating an operation signal, a priority order storing means for storing a priority order given to each of the plurality of switches, and a motor associated with the switch detected by the switch operation detecting means, Drive control means for controlling the drive in accordance with the operation signal, wherein the drive control means, when receiving a plurality of operation signals from the switch operation detecting means at substantially the same time, outputs a priority order from the priority order storage means. Is read out, and drive control is performed according to the operation signal having the highest priority. 2. The plurality of switches are divided into a first switch group and a second switch group, and when a main switch included in the first switch group is operated, the switch operation detecting means is a first switch group. A switch circuit characterized in that only one of the first switch group and the second switch group is effective.