JPH03279033A - Control method for motor of power seat and device therefor - Google Patents

Abstract

PURPOSE:To sufficiently mitigate fatigue of a driver by optionally selecting with a select switch either manual control or automatic control of a motor, and adopting the automatic control to repeatedly rotate the motor in the normal and reverse direction and move a movable member in the moving range of the automatic control. CONSTITUTION:When automatic control of a motor 12 is selected by operating a select switch 14, the motor is repeatedly rotated in the normal and reverse direction, and a seat back 20 is repeatedly fluctuated in the range of fluctuation of the automatic control. In short, as the seating posture of a driver is forcedly moved by fluctuation of the seat back 20, fatigue of the driver is mitigated. Hereby, accumulation of fatigue at driving in a long time is sufficiently restrained by easy operation and fatigue is reduced. Because the manual control or the automatic control is surely changed over with the select switch 14, maloperation of a manual switch 10 at automatic control can be prevented.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a motor control method for a power seat that can set the position of a movable member such as a seat by operating a seating posture control device through drive control of a motor. and motor control devices.

[Conventional technology]

For example, in the seat of a vehicle, the seat cushion, seat back setting angle, shape, body pressure distribution, and
The hardness of the body is set to provide a sense of stability, comfort, etc. to the seated person, and to suppress fatigue of the seated person.

Further, in such a seat, configurations in which various seating posture control devices such as a seat slide device and a reclining device are installed are widely known. Such seats, for example, are often attached to the driver's seat, and adjust the driver's seat position, seat back inclination angle (reclining angle), etc. to adjust the seating position according to the driver's body shape, preferences, driving conditions, etc. It is configured so that it can be set arbitrarily. With such a configuration, a sense of stability and comfort when seated can be more reliably obtained.

[Problem to be solved by the invention]

However, even if the angle and shape of the seat cushion and seat back are optimized, and the movable members of the seating posture control device are set to the optimal position, it is impossible to remain in the same sitting posture for a long time. Fatigue is inevitable.

In such a case, the seated person may move the movable members of the seating posture control device, such as the seat itself or the seat pad.

The seat cushion, reclining angle of the seat back, etc. are readjusted within a range that does not interfere with driving in order to alleviate fatigue.

However, the adjustment of movable members such as the seat by such a seating posture control device is performed at any time depending on, for example, when the driver is riding or the driving situation. Therefore, manual adjustment using an operating handle or the like becomes cumbersome to operate, and may impede safe driving while the vehicle is running.

Therefore, for example, a configuration called a power seat is known, which includes a motor and allows the position of a movable member of a seating posture control device to be adjusted by controlling the drive of the motor by operating an operation switch or the like. However, even in such a power seat, since a switch operation is required when adjusting the movable member, the operation is inevitably sloppy, and the operability has not been sufficiently improved.

If the operating switch is erroneously operated more than necessary when adjusting the movable member, the movable member may move significantly and there is a risk that the sitting posture may be disturbed.

An object of the present invention is to provide a motor control method and a motor control device for a power seat, which prevent excessive movement of movable members during fatigue relaxation and reduce fatigue through easy operation.

[Means to solve the problem]

In order to achieve this object, according to the novel motor control method of the present invention, the movement range of the movable member during manual control of the motor and the movement range of the movable member during automatic control are individually limited. , manual control, and automatic control of the motor can be selected using a select switch.

During automatic control of the motor, the motor is automatically repeatedly driven in the forward and reverse directions within the range of automatic control, thereby repeatedly moving the movable member within the range of automatic control.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, a motor control device 10 according to the present invention includes a motor 12, a select switch 14, and a manual switch 16.

As the motor 12, for example, a DC geared motor can be used. As shown in FIG. 2, when the motor 12 is driven (forward rotation, reverse rotation), the movable member of the seating posture control device, for example, in the reclining device 18, the seat back 20 is moved to the front limit position, which will be described later. , the rear limit position, the seat cushion 22 is swung back and forth between the seat cushion 22 and the rear limit position. Note that the reclining device 18 has a known configuration and is not the purpose of this invention, so it will not be described in detail.

As shown in FIG. 1, the select switch 14 includes, for example, a main contact 14a and a two-position switching contact 14.
A self-holding seesaw type switch with 14C and 14C is available. The main contact 14a of the select switch is connected to the positive pole of a power source, for example, a car battery, and the main contact 14b switches the current supply destination from the battery.
, I4c.

Further, as the manual switch 16, for example, an automatic return type seesaw having a main contact 16a and two switching contacts 16b, 16c, and a neutral position where the main contact does not come into contact with any of the two switching contacts. A type switch is available. The main contact 16a of such a manual switch 16 is usually
Main contact 1 is located in the neutral position and is activated by pressing an operating lever (not shown) in any direction.
6a is brought into contact with either switching contact 16b or 16c. Then, after the operation is completed and the pushing force in any direction is removed,
The control lever etc. are configured to automatically return to the neutral position.

The main contact 16a of the manual switch is connected, for example, to a changeover contact 14b of a selection switch, which is formed as the manual control side of the selection switch 14.

The select switch 14 and the manual switch 16 are disposed at positions where the driver can operate the seated person, that is, the driver seat 23, for example, on the side of the driver seat 22, as shown in FIG. However, the selection switch 14 and the manual switch 16 need only be located at a position where they can be operated by the driver, and are not limited to the side of the seat cushion 23, but may be located at other positions, such as a console box or a corresponding door. It may also be a formed armrest or the like.

As shown in FIG. 1, control relays RL1. RL2 is the manual limit switch 24, which will be described later.
Each is connected to C. Control relay 1? L.I.R.
As L2, for example, an electromagnetic relay that opens and closes contacts by passing a current through a coil can be used.

For example, control relay RLI has relay contacts RL1a, R
Llb, control relay RL2 has relay contacts RL2a, R
Each of them is configured to include L2b. Here, control relay RL1. RL2 relay contacts RL1a, RL2a
is formed, for example, as a normally open contact that is open when the relay is deenergized, and the normally open contact is closed by energizing the relay. In addition, control relay RL1.
RL2 relay contact! 1L1b and RL2b are formed, for example, as normally closed contacts that are closed when the relay is de-energized, and the normally-closed contacts are opened when the relay is energized.

As shown in FIG. 1, the motor 12 operates via relay contacts RLla, RL1b, RL2a, and RL2b.
Connected to the positive and negative terminals of the battery.

Here, the motor 1 is operated by operating the manual switch 16.
For example, the manual limit switches 24 and 26 that limit the swing range of the sort bag 20 when the sort bag 20 is driven are connected between the contact 14b of the manual switch and the control relay RLI, and between the contact 14C and the control relay 1?
12, respectively.

As the manual limit switch 24.26, the first
As shown in the figure, for example, an automatic return type switch configured to be able to cut off current supply by pressing the operating pieces 24a, 26a can be used.

As shown in Figure 3, manual limit switch 2
4.26 is, for example, a cam plate 30 that is rotatable integrally with the arm plate 28 of the reclining device 18.
It is fixed to the fixing member 32 etc. around the . and,
At the front and rear limit positions of the seat back 20, the protrusion 34 of the cam plate 3o engages the limit switch 24.26.
The operating pieces 24a and 26b of the button are configured to be pressable, respectively. In such a configuration, the seat back 20
When the seat back reaches the front limit position, the operating piece 24a of the limit switch 24 is pressed by the protrusion 34 of the cam plate, and when the seat back reaches the rear limit position, the operating piece 26a of the limit switch 26 is pressed. Each limit position of the seat back is detected.

For example, at any reclining angle of the seat back 2o, the main contact 14a of the select switch is set to contact 1.
4b side (manual control side). At this time, when the main contact 16a of the manual switch is operated from the neutral position to the contact 16b side, the current flows to the control relay RLI via the limit switch 24 in the on front limit position, as shown in FIGS. flows, and control relay RLI is energized. Then, by energizing control relay RLI, relay contact RLIa closes and relay contact RL1b opens. At this time, since control relay RL2 is in a de-energized state and relay contact RL2b is closed, the motor 12 is driven, for example, in the normal rotation direction by the current flowing through relay contacts RLla and RL2b, and the seatback 20 swing forward.

For example, when the reclining angle of the sort bag 2o reaches a desired position, if the operating force of the manual switch 16 is released and turned off, the current is cut off at the manual switch, and the control relay RLI is turned off. Forced.

Then, as shown in FIG. 4, relay contact RLIa opens, relay contact RL1b closes, and motor 12
1. The supply voltage is cut off to the motor and the motor is immediately stopped.
The seat back 2o is set to the desired positive control.

Also, when the main contact 16a of the manual switch is operated from the neutral position to the contact 16c side, the first
As shown in FIG. 4, control relay RL2 is energized via limit switch 26 in the on-rear end position.

Then, due to the energization of control relay RL2, relay contact RL2g closes and relay contact RL2b opens,
With relay contacts RLlb and RL2a closed,
The motor 12 is driven, for example, in the reverse direction, and the seat back 2o is swung rearward.

Then, when the sort bag 20 reaches an arbitrary reclining angle, the operating force of the manual switch 16 is released and turned off, and the control relay RL2 is deenergized. Then, as shown in FIG. 4, relay contact RL2a opens and relay contact RL2b closes, cutting off the voltage supply to the motor 12, the motor is immediately stopped, and the seat bank 2o is brought to the desired position. Set.

In such a configuration, the manual switch 16 can be operated each time the select switch 14 is switched to the manual side 14b, so the reclining angle of the seat cushion 2o can be easily adjusted according to the body shape and preferences of the seated person. can.

Here, for example, when the manual switch 16 and the motor 12 rotate in the normal direction, the seat back 20 reaches the front limit position of manual control and the limit switch 24 is turned off by the protrusion 34 of the cam plate, as shown in FIG. , control relay RLI is deenergized. Then, relay contacts R1 and Is open and relay contact RL
1b is closed, the motor 12 is immediately stopped regardless of the operation of the manual switch 16, and the front limit position of manual control of the seat back 20 is set.

Further, when the seat back 20 reaches the rear limit position of manual control when the motor 12 is reversely rotated by the manual switch 16, the protrusion 34 of the cam plate
Limit switch 26 at the rear limit position is turned off, and control relay RL2 is deenergized. Then, as shown in FIG. 5, relay contact RL2a opens and relay contact RL2a opens.
b is closed, the motor 12 immediately stops regardless of the operation of the manual switch 16, and the rear limit position of manual control of the seat hack 20 is set.

With such a configuration, the swing range of the seat hack 20 when the manual switch 16 is operated can be limited without putting the motor 12 in a restrained state. Therefore, generation of overcurrent in the motor 12 can be prevented, and the life of the motor will not be adversely affected.

Further, in the present invention, an automatic limit switch 311.40 that limits the swing range of the seat back 20, which is different from the manual control swing range, is connected to the select switch contact 14c. A switching contact 14c is provided as an auto control side of the select switch 14.

As the auto limit switch 38, for example, an automatic return type switch is used, which is equipped with a main contact 3δ8 and two-position switching contacts 38b and 38c, and in which the main contact 38a is in contact with the switching contact 38b side under normal conditions. The switching contact 14c of the select switch is connected to the main contact 38a.

Control relay RL3 is connected to switching contact 311b of the limit switch, and control relay RL4 is connected to switching contact 38c.
are connected to each.

Control relay RL3 is connected to control relay RL1. Like RL2, it is configured with a normally open relay contact RL3a and a normally closed relay contact RL3b. In addition, the control relay RL4 has normally open relay contacts RL4a and RL
4c, and a normally closed relay contact RL4b.

Relay contact +1L3b is interposed between switching contact 38c of the limit switch and control relay RL4, and relay contact RL4b is interposed between switching contact 38b of the limit switch and control relay RL3.

In addition, the main contact 311a of the limit switch is connected to the switching contact 1 of the manual switch via the relay contact RL3a.
6b, and is also connected to a switching contact 16c via a relay contact RL4a.

The main contact 311a and the switching contact 38c of the limit switch are connected via the relay contact RL4c, and the limit switch 40 is interposed between the switching contact 311c and the relay contact RL3b.

As the limit switch 40, for example, an automatic return type switch similar to the manual limit switches 24 and 26 can be used, and is configured to cut off the current by pressing the operating piece 40a.

As shown in FIG. 6, the auto limit switch 30.
40 is fixed to a fixing member 44 or the like around the auto cam plate 42, for example. cam plate 42
is provided so as to be rotatable integrally with the seat hack 20,
It is formed with a recess 46 having a depth and width that allows the operation pieces 38d, 40a of the limit switch 38, 40 to protrude. And seat hack 20 during auto control
At the front and rear limit positions, the stepped portions 46a and 46b of the cam plate 42 engage the operating piece 38d of the limit switch.
, 40a, respectively. The swing range of the seat hack 20 during automatic control is an angle that does not interfere with the driver's driving, for example, 2
It is said to be about ~5°.

In such a configuration, when the remote controller 20 reaches the front limit position of automatic control, the left step 46a of the cam plate activates the operation piece 311d of the limit switch 38.
is pressed, and when the seat back reaches the rear limit position of the automatic control, the operating piece 40a of the limit switch 40 is pressed by the right stepped portion 46b, and each limit position is detected.

Here, the rocking of the seat back 20 during the automatic control is configured to be performed, for example, at a neutral position of the seat back (see FIG. 2). The neutral position of the seat back 20 is, for example,
The seatback 20 of the driver's seat is set at a position that does not obstruct the driver's (seated person's) getting on and off the vehicle and does not come into contact with the rear seat occupant, and the seat back 20 of the driver seat is set to a nearly neutral position during driving or the like.

In such a configuration, for example, when the select switch 14 is operated to the auto control side, the main contact 14a of the select switch is switched to the switching contact 14c side (between a and C). Then, as shown in FIGS. 1 and 7, since the main contact 3δa of the limit switch in the front limit position is normally on the switching contact 38b side (between a and b), Current from the battery is supplied to control relay RL3, energizing control relay RL3.

When control relay RL3 is energized and relay contact RL3a is closed, the current from the battery is
From select switch switching contact 14c to relay contact R
L3a, supplied via limit switch 24,
Control relay RLI is energized. Then, as in the case of manual control, the relay contact RLla closes and the relay contact RL1b opens, so the motor 12 is first driven in the normal rotation direction and the seat back 20 is swung forward.

Under normal rotation of the motor 12, the seat back 20 swings forward, and when the stepped portion 46a of the automatic cam plate presses the operating piece 38d of the limit switch at the front limit position, the first
As can be seen from FIG. 7, the main contact 311a is switched to the switching contact 38c side (between a and C). Then, as shown in FIG. 7, control relay RL3 is deenergized, relay contact RL3a is opened, control relay RLI is deenergized, and motor 12 immediately stops. At the same time, switching of main contact 38a to switching contact 38c energizes control relay RL4 via limit switch 40 and relay contact RL3b, closing relay contact RL4a. Then, current from the battery is supplied from the changeover contact 14C of the select switch via the relay contact RL4a and the limit switch 26, and the current is supplied to the control relay RL2.
is energized, the motor 12 is driven in the reverse direction, and the seat back 20 is swung rearward.

Here, as can be seen from FIG. 7, when the motor 12 reverses and the seat back 20 is swung forward from the rear limit position during automatic control, the suppression of the limit switch 38 by the cam plate 42 is released. be done.

Then, as can be seen from FIGS. 1 and 7, the main contact 38a of the limit switch is switched from the switching contact 38c to the switching contact 38b, and the current supplied to the control relay RL4 via the limit switch 3δ is cut off. be done.

However, as shown in FIG. 1, if relay contact RL4c is interposed between switching contacts 38b and 38c of the limit switch, relay contact RL4c is closed when control relay RL4 is energized, so limit switch 38 Even if the switch is switched, control relay RL4 continues to be energized.

Then, when the seatback 12 reaches the rear limit position of the automatic control due to the reverse rotation of the motor 12, the limit switch 40 is turned off, the supply of current to the control relay RL4 is cut off, and the control relay RL4 is deenergized. Then, as shown in FIG. 7, relay contact RL4a opens, control relay RL2 is deenergized, and driving of motor 12 in the reverse direction is stopped.

At this time, the main contact 38a of the limit switch 38 is on the switching contact 38b side, so the relay contact RL4b
By closing, control relay RL3 is energized,
The motor 12 is driven again in the normal rotation direction. To this day,
During automatic control, the motor 12 repeats forward and reverse rotation, and the seatback 2o is at the front limit position of automatic control.
It is repeatedly oscillated between rear limit positions.

Then, operate the select switch 14 to connect the main contact 14a.
When switching from switching contact 14c to switching contact 14b1, that is, to the manual control side, control relay RL3.
The current supply to RL4 is cut off, and automatic control of the motor 12 is interrupted. In other words, by switching the select switch 14 to the manual control side, the motor 1
2 automatic control is turned off.

As described above, according to the present invention, the select switch 1
If you operate 4 and select automatic control of the motor 12,
The motor repeatedly rotates forward and reverse, and the seat back 20
It is repeatedly oscillated within the auto-controlled oscillation range. In other words, since the driver's sitting posture is forcibly moved by the rocking of the seat back 20, the driver's fatigue can be alleviated. Therefore, with easy operation, the accumulation of fatigue during long-term operation can be sufficiently suppressed, and fatigue ρ can be reduced.

Since manual control and automatic control are reliably switched by the select switch 14, erroneous operation of the manual switch 16 during automatic control can be prevented. Therefore, during automatic control of the motor 12,
The seat back 20 is repeatedly swung within a swiveling range that is set to an extent that does not affect the driver's driving operation, etc., and the seat back will not be erroneously swung significantly.

Further, according to the motor control device of the present invention, the swing range during manual control and the swing range during auto control are individually limited by the manual limit switch 24.2B and the auto limit switch 38.40. . Then, operate the select switch 14 and manual switch 16,
and manual limit switch 24.26,
The motor 12 is driven and controlled by energizing and deenergizing the control relays RLI to RL4 by turning on and off the auto limit switches 38 and 40. Therefore, the configuration can be simplified, a known power type reclining device can be used as is, and a relatively inexpensive motor control device can be obtained.

By the way, in the embodiment, the seat back 20 is configured to repeatedly swing at all times by switching the select switch 14 to the automatic control side. However, L7 is not limited to this. For example, a timer (not shown) is provided on the auto control side, and when the motor 12 is automatically controlled, the motor is driven for a certain period of time every time a predetermined period of time elapses, and the seatback is adjusted. It may also be configured to perform 20 repeated swings. For example, the predetermined time is 2
It is said to be about 0 minutes.

According to such a configuration, the seat back 20 swings for a certain period of time without the driver having to operate the select switch 14 each time, thereby alleviating fatigue, improving operability, and Because the seat pack is repeatedly rocked regularly, the accumulation of fatigue can be sufficiently suppressed.
Fatigue can be reduced in 4 minutes.

In the embodiment, the motor 12 is configured to be automatically controlled when the seat back 20 is in the neutral position, but the configuration is not limited to this, and the seat back 20 may be configured to repeatedly rock in other positions. Good too. Furthermore, the position that can be automatically controlled is not limited to one position, and a plurality of positions may be set.

Further, in the embodiment, the reclining device 18 is exemplified as the seating posture control device, and a configuration for repeatedly rocking the seat back 20 is specified. This invention can also be applied to support devices and the like.

The present invention is not limited to the driver seat, but may be applied to an assistant seat.

In the embodiment, the present invention is embodied as a motor control device for an automobile seat. However, this is not limited to, but is not limited to, seats on which people sit for long periods of time, such as seats on trains such as Shinkansen, airplanes, ships, etc., theater seats in movie theaters, conference rooms, library seats), etc. The motor control device of the present invention can also be applied to applications such as office work, office work, etc.

The above-mentioned embodiments are for illustrating the present invention, and are not intended to limit the scope of the present invention, and all modifications and modifications within the technical scope of the present invention are also included in the present invention. Needless to say.

〔Effect of the invention〕

As described above, according to the bowroot motor control method according to the present invention, manual control and automatic control of the motor can be arbitrarily selected by the select switch, and by using automatic control, the motor repeatedly rotates forward and reverse. , the movable member is repeatedly moved within the automatically controlled movement range. Therefore, the sitting posture of the occupant is forcibly moved by the movement of the movable member, and with easy operation, the accumulation of fatigue during long hours of driving can be suppressed, and fatigue can be sufficiently reduced. .

Since manual control and automatic control are reliably switched by the select switch, erroneous operation of the manual switch during automatic control can be prevented. Therefore, excessive movement of the movable member during automatic control of the motor can be prevented, and the safety of the seated person is ensured.

In addition, if the motor is configured to be driven for a certain amount of time every time a predetermined time elapses during automatic control of the motor, the seated person can move the motor without having to operate the select switch/r each time. Since the members are periodically oscillated for a certain period of time, operability is improved, and the accumulation of fatigue can be suppressed to a large extent, so that fatigue can be sufficiently reduced.

According to the power seat motor control device of the present invention, the above motor control method can be appropriately performed. According to the configuration of the present invention, the configuration can be simplified and a known power type seating posture control device can be used as is, so a relatively inexpensive motor control device can be obtained.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a motor control device for a power seat according to the present invention, FIG. 2 is a schematic diagram of a power seat, and FIGS. 3 and 6 are a manual cam plate, a limit switch, The schematic front views of the auto cam plate and the limit switch, as well as FIGS. 4, 5, and 7, are time charts of the motor control device of the present invention. lO: power seat motor control wave fl, 12: motor, 14: select switch, 16: manual switch, 16: reclining device (seating posture control device), 2
0 Nijido pack (movable member), 24.26: Manual limit switch, 30: Manual cam plate, 38.40: Auto limit switch, 42: Auto cam plate, RLf -RL4
: Control relay. Diagram! Figure 2 Figure 4 Figure 6 Figure 6

Claims (4)

[Claims] (1) In a power seat motor control method in which the position of the movable member of the seating posture control device can be set by motor drive control, the movement range of the movable member during manual control of the motor and the movement range of the movable member during automatic control are The movement range is individually limited, and manual control and automatic control can be selected using a select switch. When controlling the motor manually, the position of the movable member is controlled by driving the motor in the direction corresponding to the switch operation. is adjusted within the movement range of manual control, and when the motor is automatically controlled, the motor is automatically repeatedly driven in the forward and reverse directions within the movement range of automatic control, and the movable member is A motor control method for a power seat that repeatedly moves within an auto-controlled movement range. (2) During automatic control of the motor, the motor is automatically driven for a certain period of time every predetermined period of time.
The method for controlling a motor for a power seat according to claim 1, wherein the movable member is moved repeatedly. (3) A motor for moving the movable member of the seating posture control device, a select switch for selecting manual control or automatic control of the motor, and a motor connected to the manual control side of the select switch,
By switching the corresponding control relay, the manual switch changes the rotation direction of the motor, detects the movement limit position of the movable member during manual control, and controls the drive of the motor during manual control.
A pair of manual limit switches limit the movement range of the movable member, detect the movement limit position of the movable member during automatic control, control the motor drive during automatic control, and limit the movement range during manual control. is separately equipped with a pair of auto limit switches that limit the movement range of the movable member, and when the select switch is switched to manual control, the position of the movable member is controlled by the motor drive control by the manual switch. When the motor is adjusted within the movement range of the control and the select switch is switched to auto control, the motor is automatically driven repeatedly in the forward and reverse directions by the motor drive control using the auto limit switch. A power seat motor control device that moves parts repeatedly within an automatically controlled range. (4) The power seat motor control device according to claim 3, further comprising a timer capable of driving the motor for a certain period of time every time a preset predetermined period of time elapses during automatic control of the motor. (S) The power seat motor according to claim 3 or 4, wherein the movement range of the movable member during automatic control is set based on a neutral position that does not interfere with the getting on and off of the seat occupant and does not come into contact with the rear seat occupant. Control device.