JPH0672730U - Vehicle power seat - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a power seat for a vehicle in which the seat does not move at high speed when the vehicle is running. [Structure] A seat which is moved in a predetermined direction by driving a motor 5, a low speed switch 10 for moving the seat at a low speed, high speed switches 11 and 12 for moving the seat at a high speed, and a low speed switch 10 are operated. A vehicle speed sensor 14 for detecting running of a vehicle is provided in a power seat for a vehicle having a control unit 20 for controlling the motor 5 at a low speed when the motor 5 is driven and for controlling the motor 5 for a high speed when the high speed switches 11 and 12 are pressed. The control unit 20 controls the high speed switch 1 when the vehicle speed sensor 14 detects traveling.
It is provided with switching means 23 and 24 for switching the motor 5 from the high speed drive control to the low speed drive control when the motors 1 and 12 are operated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle power seat in which a seat such as a seat back or a seat cushion is moved in a predetermined direction by a motor.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, in a vehicle power seat, a seat such as a seat back or a seat cushion is moved by a motor in a predetermined direction such as a front-rear direction or a vertical direction. In such a power seat, the switch 4 of the circuit 1 as shown in FIG. 2 is turned on to drive the motor 3 to move the seat. Incidentally, 2 is a battery.

The movement of the seat is set to move at a low speed so that fine adjustment can be performed. Therefore, it takes time to recline the seat back, which is inconvenient. Therefore, there has been proposed a vehicle power seat that is provided with a high speed switch so that the seat can be moved at high speed in addition to low speed.

[0004]

[Problems to be solved by the device]

 However, in such a vehicle power seat, if the high-speed switch is operated while the vehicle is traveling, the seat such as the driver's seat moves at high speed, which is not preferable for driving operation.

Therefore, an object of the present invention is to provide a power seat for a vehicle in which the seat does not move at high speed when the vehicle is running.

[0006]

[Means for Solving the Problems]

 The present invention has been made in view of such a problem, and includes a seat that moves in a predetermined direction by driving a motor, a low-speed switch that moves the seat at a low speed, and a high-speed switch that moves the seat at a high speed. A vehicle power seat having a control unit for controlling the motor to drive at a low speed when the low speed switch is operated, and for controlling the motor to drive at a high speed when the high speed switch is pressed. The control unit switches the control of the motor from the high-speed drive control to the low-speed drive control when the high-speed switch is operated while the travel detection unit detects the travel. It is characterized in that it is provided with a switching means.

[0007]

[Work]

 According to such means, when the high speed switch is operated while the travel detecting means detects the travel of the vehicle, the switching means switches the control of the motor from the high speed drive control to the low speed drive control.

[0008]

【Example】

 An embodiment of a vehicle power seat according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a circuit configuration of a control system for moving a seat cushion (seat) (not shown) in the front-rear direction. Note that the control system for moving the seat cushion in the vertical direction and the control system for reclining the seat back are almost the same as this control system. Will be omitted.

In FIG. 1, 5 is a motor for moving the seat cushion in the front-back direction, 10 is a movement switch (low speed switch) for moving the seat forward and backward, and this movement switch 10 is a contact for forward movement. 10a and a contact point 10b for reverse movement, the contact piece 10c can be switched between the contact points 10a and 10b and three positions of the intermediate position shown. Reference numerals 11 and 12 are high-speed switches for moving the seat cushion at high speed.

Reference numeral 13 denotes an operation unit that can be moved in two steps in the left-right direction (in FIG. 1). When the operation unit 13 is moved to the left (moved by one step), the contact piece 10c of the movement switch 10 makes contact. The high speed switch 11 is turned on when the operation portion 13 is further moved to the left (moved in two steps) after being connected to 10a. Similarly, when the operating portion 13 is moved to the right (moving one step), the contact piece 10c is connected to the contact 10b, and when the operating portion 13 is further moved to the right (two steps), the high-speed switch 12 is moved. Is turned on.

Reference numeral 14 is a vehicle speed sensor (running detection means) that outputs a speed signal according to the vehicle speed, and 20 is a low speed drive control or a high speed drive control of the motor 5 according to the operation of the switches 10, 11, and 12. It is a control unit.

The control unit 20 outputs relays 21 and 22 for switching the motor 5 to rotate forward and backward, a relay 23 for switching the motor 5 from high speed drive control to low speed drive control, and a vehicle speed sensor 14. There is provided a control unit 24 for supplying a current to the relay coil 23a of the relay 23 to turn off the contact 23b when the vehicle speed signal exceeds a predetermined value (for example, a signal corresponding to about 15 to 20 Km / h per hour). The relay 23 and the control unit 24 constitute switching means for switching the motor 5 from high speed drive control to low speed drive control.

The relay coils 21D and 22D of the relays 21 and 22 have one terminal connected to the anode of the battery 6 and the other terminal connected to the contacts 10a and 10b of the movement switch 10, respectively. When the contact piece 10c of 10 is connected to the contact points 10a and 10b, the relay coils 21D and 22D are energized, so that the contact pieces 21a and 22a which are always connected to the contact points 21b and 22b are connected to the contact points 21c and 22c. It is supposed to do.

The contacts 21b and 22b are grounded via a resistor R, and the contacts 21c and 22c are connected to the positive electrode of the battery 6. Therefore, when the contact piece 21a is connected to the contact point 21c, a current flows in the direction of arrow P1 and the motor 5 rotates in the forward direction, whereby the seat cushion moves forward, and when the contact piece 22a is connected to the contact point 22c, the current flows in the direction of arrow P2. The motor 5 rotates in the reverse direction and the seat cushion moves backward.

Since currents flowing in the directions of arrows P1 and P2 flowing through the motor 5 both flow through the resistor R, the motor 5 is driven at a low speed. When the high speed switches 11 and 12 are turned on, the current flowing through the motor 5 does not go through the resistor R but through the contact 23b of the relay 23 and the high speed switches 11 and 12, so that the motor 5 can be driven at high speed. And

Next, the operation of the power seat configured as described above will be described.

When the seat cushion is moved forward at a low speed, the operation portion 13 is moved leftward by one step to connect the contact piece 10c of the movement switch 10 to the contact 10a. By this connection, the relay coil 21D of the relay 21 is energized and the contact piece 21a connected to the contact 21b is connected to the contact 21c. As a result, a current flows in the direction of arrow P1 to the motor 5 and the motor 5 rotates in the forward direction to move the seat cushion forward.

Since the current flowing through the motor 5 flows through the resistor R, it is driven at low speed, and the seat cushion moves at low speed.

When moving the seat cushion at a high speed, the operation unit 13 is further moved to the left (moved in two steps) to turn on the high speed switch 11. By this turning on, the current flowing through the motor 5 flows through the contact 23b of the relay 23 and the high speed switch 11 without passing through the resistor R. As a result, the motor 5 is driven at high speed and the seat cushion moves forward at high speed.

On the other hand, the vehicle speed sensor 14 outputs a vehicle speed signal corresponding to the vehicle speed, and when the vehicle speed signal becomes a predetermined value or more, that is, when the vehicle speed becomes about 15 to 20 km / h or more, the control unit 24 relays. The relay coil 23a of 23 is energized. When the relay coil 23a is energized, the contact 23b is turned off, and the current flowing through the motor 5 flows through the resistor R. That is, the motor 5 driven at high speed is driven at low speed.

While the relay coil 23a is energized, the contact 23b continues to be turned off even if the operation unit 13 is not operated. Therefore, the operation unit 13 is operated from this state and the high speed switch 11 is operated. Even if is turned on, the motor 5 is not driven at high speed but is driven at low speed.

When the operation unit 13 is moved to the right, the motor 5 is driven at low speed or is driven at high speed in the same manner as above. Then, even when the vehicle is traveling at a speed higher than a predetermined speed, the motor 5 is driven at a low speed in the same manner as above.

As described above, when the vehicle is traveling at a speed equal to or higher than the predetermined speed, the motor 5 is not driven at a high speed but is driven at a low speed even if the operation unit 13 is operated to turn on the high speed switches 11 and 12. Since it is driven at high speed, the seat cushion moves at low speed. For this reason, it is preferable for driving and safety is improved.

In the above embodiment, the control unit 24 energizes the relay coil 23a when the vehicle speed sensor 14 detects a speed of approximately 15 to 20 km / h or more, but the present invention is not limited to this and other speeds may be used. Of course.

In the above embodiment, the vehicle speed sensor 14 is used to detect the running of the vehicle. However, the invention is not limited to this. For example, an engine speed sensor or a shift lever position in an auto-matching vehicle may be used. A sensor or the like may be used. If the vehicle speed sensor 19 used in the vehicle speed sensitive door lock device is used, the parts can be shared and the number of parts can be reduced.

Although the switching means of this embodiment is configured by using the relay 23 and the control unit 24, it is not limited to this and may be configured by another circuit.

Further, although the high-speed side switches 11 and 12 and the movement switch 10 of this embodiment are combined into one, the present invention is not limited to this, and a touch panel switch, a high-speed side switch and a low-speed switch are individually provided. It goes without saying that it may be a switch having another structure such as a side switch.

[0029]

[Effect of device]

 As described above, according to the present invention, when the vehicle is traveling, even if the high speed switch is turned on, the motor is driven at a low speed instead of being driven at a high speed, so the seat moves at a low speed. For this reason, it is preferable in terms of driving and safety is improved.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a configuration of a power seat control system according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of a conventional power sheet.

[Explanation of symbols]

 5 Motor 10 Moving Switch (Low Speed Switch) 11 High Speed Switch 12 High Speed Switch 14 Vehicle Speed Sensor (Running Detection Means) 20 Control Unit 23 Relay 24 Control Unit

Claims (1)

[Scope of utility model registration request] 1. A seat which is moved in a predetermined direction by driving a motor, a low speed switch for moving the seat at a low speed, a high speed switch for moving the seat at a high speed, and a low speed switch when the low speed switch is operated. In a vehicle power seat having a control unit for controlling a motor to drive at a low speed and controlling the motor to drive at a high speed when the high speed switch is pressed, a travel detection unit for detecting travel of a vehicle is provided, and the control unit is A power seat for a vehicle, comprising: switching means for switching the motor from a high speed drive control to a low speed drive control when the high speed switch is operated while the travel detecting means detects the travel.