JP5378698B2 - Vehicle seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat device capable of reducing the wiring number of a harness to be connected to an ECU, and correctly detecting the position of a driving unit. <P>SOLUTION: The vehicular seat device comprises a driving motor 31 for driving a movable unit, an ECU 10 for performing the operational control of the driving motor 31, and a harness h for supplying the driving current to the driving motor 31 from the ECU 10. The ECU 10 has a spike noise extraction circuit 13 for extracting the spike noise to be output to a supply wiring of the driving current from the driving motor 31 as the driving motor 31 is driven. A microcomputer 11 counts the number of rotation of the driving motor 31 based on the output signal of the spike noise extraction circuit 13. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vehicle seat device having a function of electrically displacing a movable part.

  Conventionally, there is a vehicle seat called a power seat having a function of electrically displacing a movable part. Examples of the seat movable part include a seat front / rear slide part, a lift part at the front part of the seat surface, a lift part at the rear part of the seat surface, and a reclining angle changing part of the backrest. Further, a headrest raising / lowering part, a lumbar support displacement part, and the like may be added.

  In the vehicle seat as described above, for example, there is a vehicle seat having a function of storing the position of the movable part once set by the user and automatically moving each movable part to the stored position by a user's calling operation. It has been developed (for example, Patent Document 1). Some have a function of automatically displacing the movable portion of the seat to a position where the user can easily board when the vehicle door is opened. Such a function is realized by performing movement control while recognizing the position of the movable part by counting the number of rotations of the control unit or the drive motor.

  As a method of counting the number of rotations of the drive motor, a rotation detection element such as a Hall IC or a reed switch sensor is provided in the drive motor, and a detection signal is sent from the rotation detection element to the control unit via a harness. In general, the number of rotations of the drive motor is counted based on this detection signal.

Also, in order to reduce the cost by omitting the rotation detection element, a method has been proposed in which the pulsation component of the drive current supplied to the drive motor is detected and counted to obtain the rotation speed of the drive motor. (For example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 08-168291 JP-A-61-128789

  In recent years, in some vehicle seats, a large number of electrical components are arranged with higher functionality, and the number of wirings of harnesses connecting these electrical components and ECU (electronic control unit) has become very large. Yes. In general, the vehicle seat has a limited space for arranging the ECU and the harness, and the terminal portion of the harness occupies a relatively large volume. Therefore, the vehicle having a large number of electrical components as described above. There is a problem that the number of wirings of the harness is to be reduced in the use sheet.

  Further, as in the techniques disclosed in Patent Documents 1 and 2, in the method of calculating the rotational speed of the drive motor by counting the pulsation of the drive current, the drive current level and pulsation frequency are stopped from the start of the drive motor movement. Since it changes relatively greatly depending on the load or the size of the load, it is difficult to accurately detect this pulsation, and there is a problem that the rotational speed of the drive motor cannot be accurately counted.

  An object of the present invention is to provide a vehicle seat that can reduce the number of wirings of a harness connected to an ECU and can accurately detect the position of a drive unit.

In order to achieve the above object, the invention according to claim 1
A seat body having a movable part;
A drive motor for driving the movable part;
A control unit for controlling the operation of the drive motor;
Wiring for supplying a drive current from the control unit to the drive motor by electrically connecting the control unit and the drive motor;
In a vehicle seat device comprising:
The control unit includes
A noise extraction circuit that extracts a noise signal output from the drive motor to the wiring as the drive motor rotates;
A control circuit for counting the number of rotations of the drive motor based on the signal of the noise extraction circuit;
Is provided ,
The noise extraction circuit is
An inrush wave removing circuit for removing an inrush current signal component from the drive current signal;
A high-pass filter circuit that is set to have a higher cutoff frequency than the inrush wave removal circuit and passes a signal of a noise component from a signal that has passed through the inrush wave removal circuit;
An amplifier circuit that amplifies the noise component signal to a saturation level;
A rectifier circuit that converts a positive / negative signal to a positive / negative signal among the noise component signals;
A waveform shaping circuit that compares a signal that has passed through the amplifier circuit and the rectifier circuit with a threshold value and outputs a signal having a predetermined waveform when the signal exceeds the threshold value;
It is characterized in that it comprises a.
A second aspect of the present invention is the vehicle seat device according to the first aspect,
As the drive motor, a slide motor that slides the seat surface portion of the seat body in the front-rear direction;
As the drive motor, a seat surface rear raising / lowering motor that moves the rear portion of the seat surface portion up and down is provided in the seat surface portion,
The slide motor is disposed along the front end surface of the seat surface portion of the seat body,
The seat surface rear raising / lowering motor is arranged so as to sandwich the control unit in the front-rear direction together with the slide motor.
The invention according to claim 3 is the vehicle seat device according to claim 2,
As the drive motor, a link lining motor that changes the angle of the backrest of the seat body is provided in the backrest,
The control unit is arranged between the reclining motor and the slide motor so that the reclining motor, the slide motor, and the control unit are arranged in a substantially straight line in the front-rear direction.
The invention according to claim 4 is the vehicle seat device according to claim 2 or 3,
A blower for supplying air from below the seat surface portion of the seat body;
As the drive motor, a seat surface front raising / lowering motor that moves the front portion of the seat surface portion up and down is provided in the seat surface portion,
The seat front part lifting motor and the control unit are arranged so as to sandwich the blower in the left-right direction,
A harness that connects the seat surface front lifting motor and the control unit is routed around a rear end portion of the seat surface portion.
According to a fifth aspect of the present invention, in the vehicle seat device according to the fourth aspect,
Harness for connecting the control unit and the blower, the direction in which the sliding motor is arranged are characterized that you have routed in the opposite direction.

A sixth aspect of the present invention provides the vehicle seat device according to any one of the first to fifth aspects,
The drive motor is a motor with a DC brush,
The noise signal is spike noise.

The invention according to claim 7 is the vehicle seat device according to any one of claims 1 to 6 ,
The noise extraction circuit is provided with a forward rotation circuit and a reverse rotation circuit,
When the drive motor rotates forward, a signal via the forward rotation circuit is output to the control circuit, and when the drive motor rotates reversely, a signal via the reverse rotation circuit is output to the control circuit. It is characterized by that.

  According to the present invention, since the number of rotations of the drive motor is detected on the control unit side, the wiring for detecting the rotation can be omitted from the wiring connecting the control unit and the drive motor. Thereby, reduction of the number of wirings of the harness arrange | positioned at the vehicle seat can be aimed at. In addition, since the rotation speed is counted by extracting noise components such as spark noise instead of the pulsation component of the drive current, it is easy to extract the signal and the rotation speed can be reliably detected.

  Also, as the noise extraction circuit, only the noise component can be reliably extracted by the above-described inrush wave removal circuit and the high-pass filter circuit, and the noise can be reduced by an amplification circuit and a rectifier circuit that amplifies the noise component to a saturation level. The signal can be a constant level signal. In addition, the above-described waveform generation circuit provides an effect such as noise signal chattering removal, which can be easily counted by the control circuit.

  If there is a difference in the characteristics of the noise signal between the forward rotation and the reverse rotation of the drive motor, two systems corresponding to the noise signal characteristics during the forward rotation and the noise signal characteristics during the reverse rotation are extracted. By preparing a circuit and using it by switching, it is possible to reliably count the number of rotations both during forward rotation and during reverse rotation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an overall configuration of a vehicle seat according to an embodiment of the present invention.

  The vehicle seat 1 of this embodiment is a seat for a driver's seat or a passenger seat of a car. The vehicle seat 1 includes a frame 21 fixed to the vehicle, a seat surface portion 2, a backrest 3, a headrest 4 and the like. Various electric devices are provided in the cushion of the seat surface portion 2, the bottom surface portion, and the backrest 3. Parts are arranged. For example, the seat surface portion 2 includes a slide motor 22 that slides the seat surface portion 2 back and forth with respect to the frame 21, a seat surface front lifting motor 23 that moves the front portion of the seat surface portion 2 up and down, and a rear portion of the seat surface portion 2. The rear raising / lowering motor 24 for moving the seat up and down, the fans 25 and 26 for supplying air from below the seating surface, the ECU 10 for controlling each electrical component, and the like are provided. The cushion of the backrest 3 includes a reclining motor 31 that changes the angle of the back, a side airbag 32, and the like. These electrical components are connected to the ECU 10 via a harness h and are electrically controlled by the ECU 10. The harness h is bundled in a small space such as the back side of the seating surface portion 2, and the connector of the harness h has a relatively large volume, so there is a demand for reducing the number of wires connected to the ECU 10 as much as possible. . In a general vehicle seat, a plurality of ECUs may be provided for each system of electrical components, but in the example of FIG. 1, a configuration in which all electrical components of the vehicle seat 1 are controlled by one ECU 10. An example is shown.

  The slide motor 22, the seat front part lift motor 23, the seat rear part lift motor 24, and the reclining motor 31 are DC brush motors having different characteristics corresponding to driving locations.

  FIG. 2 is a block diagram showing a connection form between the ECU 10 and the electrical component, and FIG. 3 is a block diagram showing a connection form between the ECU 10 and the reclining motor 31.

  The ECU 10 is connected to the above-described electrical components via the harness h, and communicates with other ECUs provided on the vehicle via the harness h, or operating switches (51 to 56 provided on the vehicle). ) Are connected and switch signals are input from these. The operation switches include, for example, first to fourth switches 53 to 56 for position change for adjusting the slide position of the seat surface, the angle of the backrest, the height of the front portion of the seat surface, and the height of the rear portion of the seat surface. A position memory switch 51 for storing the adjusted position in a memory in the ECU 10 and a position regeneration switch 52 for reproducing the adjusted position stored in the memory are included.

  As shown in part of FIG. 3, the ECU 10 includes a microcomputer 11 and peripheral circuits for driving each electrical component and exchanging signals. The microcomputer 11 includes a memory, a CPU (Central Processing Unit), an I / O circuit, and the like, and various control operations are realized by the CPU of the microcomputer 11 executing a control program. Yes. In addition, the microcomputer 11 includes a plurality of counters for counting the rotation amounts of the slide motor 22, the seat front part lift motor 23, the seat rear part lift motor 24, and the reclining motor 31, respectively, in a memory or the like. It has come to be.

  As shown in FIG. 3, the peripheral circuit related to the reclining motor 31 includes a drive circuit 12 that supplies a power supply voltage E <b> 2 supplied from a battery (not shown) to the motor 31, and a drive current supply wiring when the motor 31 rotates. And a spike noise extraction circuit 13 for extracting spike noise output to the. The spike noise extraction circuit 13 receives a signal obtained by converting the drive current into a voltage via the current detection resistor R1.

  A plurality of sets of these drive circuits 12 and spike noise extraction circuits 13 are provided in the ECU 10 corresponding to each of the reclining motor 31, the slide motor 22, the seat front part lift motor 23, and the seat rear part lift motor 24.

  FIG. 4 shows a detailed circuit diagram of the drive circuit 12 and the spike noise extraction circuit 13.

  As shown in FIG. 4, the drive circuit 12 supplies or cuts off the motor drive power supply voltage E2 (for example, 12V) to the motor 31a, and switches the current direction between the forward direction and the reverse direction. have. The drive circuit 12 is supplied with a switching signal of the switch SW1 from the microcomputer 11, and based on this switching signal, the current supplied to the motor 31a is turned on / off and the current direction is switched.

  The spike noise extraction circuit 13 includes an inrush wave removing circuit 131 that removes an inrush current signal (a DC component signal having a large amplitude) to the motor 31a from the drive current signal that has been voltage-converted by the current detection resistor R1, and this inrush. A spike wave detection circuit 132 that amplifies the signal that has passed through the wave removal circuit 131 by passing only the high frequency component including the frequency component of spike noise, and the output of the spike wave detection circuit 132 is converted into a predetermined rectangular wave signal and output. And a waveform shaping circuit 133.

  The inrush wave removal circuit 131 is a high-pass active filter formed by connecting a capacitor C4 in series to the inverting input terminal of the operational amplifier OP1. The operational amplifier OP1 constitutes a negative feedback circuit via a negative feedback resistor R3, and amplifies a high-frequency signal and outputs it to the subsequent stage.

  The spike wave detection circuit 132 receives the output of the high frequency active filter 132a including the operational amplifier OP2, resistors R5 to R7, and the capacitor C4, and the output of the high frequency active filter 132a, and performs rectification and amplification with characteristics corresponding to the forward rotation of the motor 31a. A forward rotation circuit (132b to 132d) for performing the reverse rotation and a reverse rotation circuit (132e, 132f) for performing rectification and amplification with characteristics corresponding to the reverse rotation of the motor 31a are provided.

  The high frequency active filter 132a has a cutoff frequency higher than that of the inrush wave removal circuit 131, and can extract more spike noise signal components.

  The forward rotation circuit includes an operational amplifier OP3, an inverting amplifier 132b including resistors R8, R11, and R12, a rectifier & limit circuit 132c including a diode D1, a Zener diode Z1, and a resistor R9, an operational amplifier OP4, and resistors R13 to R18. And a non-inverting amplifier 132d. Then, by these circuits, a noise signal having an amplitude on the negative voltage side is extracted from the spike noise signal output from the high-frequency active filter 132a, and the noise signal is amplified to a saturation level to a certain level. A signal can be obtained.

  The reverse rotation circuit includes a rectification & limit circuit 132f including a diode D2, a Zener diode Z3, and a resistor R21, a non-inverting amplifier 132e including an operational amplifier OP5, resistors R20 and R22 to R24, and a limit circuit (Zener diode). Z4) and the like. Then, by these circuits, a noise signal having an amplitude on the positive voltage side is extracted from the spike noise signal output from the high-frequency active filter 132a, and the noise signal is amplified to a saturation level to a certain level. A signal can be obtained.

  The outputs of the forward rotation circuits (132b to 132d) and the reverse rotation circuits (132e, 132f) are output to the subsequent waveform shaping circuit 133 via the switch SW2. This switch SW2 is switched to the output of the forward rotation circuit (132b to 132d) when the motor 31a rotates forward according to a switching signal from the microcomputer 11, and for reverse rotation when the motor 31b rotates backward. The output is switched to the output of the circuit (132e, 132f).

  The waveform shaping circuit 133 includes a rectification & limit circuit 133a including a diode D3, a Zener diode Z5, and resistors R30 to R32, a buffer circuit including two-stage inverter circuits IV1 and IV2, and spike noise output from the buffer circuit. A comparison & waveform shaping IC 133c for receiving a signal and outputting a rectangular wave signal is provided.

  The comparison & waveform shaping IC 133c has a function of comparing the input signal from the buffer circuit with the threshold voltage and shaping and outputting a rectangular wave signal having a predetermined width when the input signal exceeds the threshold voltage. An integrated circuit. This comparison & waveform shaping IC 133c also has an effect of removing the influence of chattering of spike noise by the above operation. That is, when a signal that exceeds the threshold value is continuously input to the comparison & waveform shaping IC 133c during the generation of the rectangular wave signal, a new rectangular wave signal is not generated for this signal input. To work. As a result, continuous spike noise input due to chattering is ignored. In the comparison & waveform shaping IC 133c, the pulse width of the rectangular wave is adjusted to an appropriate interval according to the rotation frequency of the motor, for example, by selecting an external element.

  FIG. 5 is a waveform diagram showing signals at the nodes A to E of the spike noise extraction circuit 13. FIGS. 9A to 9E show signal waveforms of the nodal turns A to E. FIG.

  According to the configuration of the drive circuit 12 and the spike noise extraction circuit 13 as described above, when a drive current is supplied to the motor 31a and the motor 31a is driven to rotate, the following signals are extracted and sent to the microcomputer 11. It is supposed to be sent.

  That is, as shown in FIG. 5A, when the drive circuit 12 is turned on, an inrush current flows through the coil of the motor 31a immediately after that, and the level of the detected voltage is greatly increased (range T1). Next, as the motor 31a rotates and the drive current pulsates, spike noise occurs when the brush inside the motor 31a comes in contact with or leaves the commutator, and this spike noise signal appears in the detected voltage (range) T2). In addition, a plurality of spike noises may be continuously generated by one contact / separation of the brush and the commutator (range T3). Further, the rotation speed of the motor 31a is not constant from the start to the end of the rotation, and the level of the drive current (detection voltage) also changes from the start to the end of the rotation. Moreover, these change also with the magnitude | sizes of load.

  Next, when the detected voltage is input to the inrush wave removing circuit 131, as shown in FIG. 5B, a large change in the detected voltage level due to the inrush current and the DC component of the detected voltage are removed. Pulsation components and spike noise signals are extracted. Subsequently, when this signal is input to the high-frequency active filter 132a of the spike wave detection circuit 132, as shown in FIG. 5C, the pulsation component is almost cut and only the spike noise signal is extracted. .

  Further, as this signal passes through the rectification & limit circuit 132c of the spike wave detection circuit 132, the inverting amplifier 132b, and the non-inverting amplifier 132d, as shown in FIG. Only are extracted and shaped into a constant level signal.

  Next, when this signal is input to the comparison & waveform shaping IC 133c via the buffer circuit, a rectangular wave signal is shaped and output at a timing corresponding to spike noise as shown in FIG. 5 (e). The Here, in the range T4 where the chattering of spike noise occurs, the influence of chattering is removed and one rectangular wave signal P1 is formed and output.

  Then, the rectangular wave signal output from the spike noise extraction circuit 13 is input to the input terminal of the microcomputer 11, and the number of the rectangular waves is counted. The amount of movement of the movable part is detected.

  The vehicle seat 1 of this embodiment is configured as described above, and the following control operation is performed by the microcomputer 11 of the ECU 10.

  For example, when the first to fourth switches 53 to 56 for position change are operated, this operation signal is input to the microcomputer 11 and the microcomputer 11 switches to the drive circuit 12 corresponding to this operation signal. Is output. Thereby, a drive current is supplied from the drive circuit 12 to the corresponding motor (22 to 24, 31), and the movable portion of the vehicle seat 1 moves in the operation direction.

  Further, when the motors (22 to 24, 31) are driven, spike noise accompanying motor rotation is extracted from the spike noise extraction circuit 13, and these are converted into rectangular wave signals and sent to the microcomputer 11. The rectangular wave signal is counted by the microcomputer 11, and the counted value is stored in the corresponding counter in the memory. This counting operation is reset when each movable part of the vehicle seat 1 moves to the reference position, and the counter value is returned to the reference value (for example, the count value “0”). The error between the numerical value and the position of the movable part is minimized. The reference position of each movable part can be set, for example, at a position where each movable part has moved to a state where it can be easily boarded when the user gets on the vehicle.

  Further, when the user operates the position memory switch 51, this operation signal is input to the microcomputer 11, and the CPU of the microcomputer 11 reads the count value from the counter corresponding to each motor (22 to 24, 31), These count values are stored, for example, in a position storage unit set in a nonvolatile area of the memory. The current position of each movable part of the vehicle seat 1 is stored by storing the count value in the position storage part.

  When the user operates the position reproduction switch 52, the count value of each counter stored in the position storage unit is read by the CPU of the microcomputer 11, and the CPU is read by each motor (22 to 24, 31). Each is compared with the corresponding counter value. Then, the CPU of the microcomputer 11 outputs a signal to the drive circuit 12 of each motor while performing the counting operation so that these count values become the same value, and moves each movable part of the vehicle seat 1. Then, the drive of each motor (22-24, 31) is stopped so that the count value of each counter becomes the same as the count value of the position storage area, and each movable part of the vehicle seat 1 is moved to the position memory switch. It returns to the position memorize | stored by operation of 51.

  As described above, according to the vehicle seat 1 of this embodiment, the rotational speed of the motor (22-24, 31) is detected, and the noise component is detected from the drive current by the spike noise extraction circuit 13 of the ECU 10. Therefore, the wiring for the rotation detection can be omitted from the wiring of the harness h that connects the ECU 10 and the motors (22 to 24, 31). Thereby, reduction of the number of wiring of the harness h arrange | positioned at the vehicle seat 1 can be aimed at.

  Further, since the rotational speed of the motor (22-24, 31) is detected by extracting noise components such as spark noise instead of the pulsating component of the drive current, it is easy to extract the signal and the rotational speed is reliable. Detection is possible. Specifically, only the noise component can be reliably extracted by the inrush wave removing circuit 131 and the high-frequency active filter 132a of the spike noise extraction circuit 13, and the amplifiers 132b and 132d for amplifying the noise component to the saturation level. 132e and rectification & limit circuits 132c and 132f, the noise signal can be made a signal of a constant level. Further, a predetermined rectangular wave signal corresponding to the noise signal is generated by the waveform shaping circuit 133, and an effect such as chattering removal of the noise signal can be obtained, and this can be easily counted by the microcomputer 11.

  In addition, since there is a difference in the output characteristics of spike noise between forward rotation and reverse rotation of the motor (22-24, 31), two extraction circuits corresponding to the forward rotation characteristics and the reverse rotation characteristics. (Forward rotation circuits 132b to 132d and reverse rotation circuits 132e and 132f) are prepared, and by switching between these, reliable counting of the number of rotations can be performed both during forward rotation and reverse rotation. it can.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above embodiment, the waveform shaping circuit is configured to generate a rectangular wave signal. However, other waveform signals such as a sine waveform, a triangular waveform, and a ramp waveform may be generated. In the above embodiment, an example is shown in which one ECU 10 is provided and this ECU 10 is attached to the lower side of the seat surface portion 2 of the vehicle seat 1. However, a configuration having a plurality of ECUs may be used. The mounting position of the ECU is not particularly limited. For example, it is good also as a structure provided separately from the sheet | seat main body and connected via a harness. In the spike noise extraction circuit 13, an active filter using an operational amplifier is exemplified as each filter circuit, but it can be changed to a passive filter.

  In the above embodiment, the example in which the count of the number of rotations of the motors (22 to 24, 31) and the position recognition of the movable part based on the count is used to store and reproduce the adjustment position of the movable part by the user. The position recognition of the movable part is used for judging the operating condition of the airbag, for example (for example, control for changing the operating condition of the airbag depending on whether the seat surface position is behind or in front of the predetermined position) Etc.) may be used for various controls. In addition, the detailed configuration, the control processing method, and the like shown in the embodiments can be changed as appropriate without departing from the spirit of the invention.

1 is a perspective view illustrating an overall configuration of a vehicle seat according to an embodiment of the present invention. It is a block diagram which shows the connection form of ECU and an electrical component. It is a block diagram which shows the structure of the connection part of ECU and a motor. It is a circuit diagram which shows the detailed structure of a drive circuit and a spike noise extraction circuit. It is a wave form diagram which shows the signal output to each node of a spike noise extraction circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat surface part 3 Backrest 4 Headrest 10 ECU
DESCRIPTION OF SYMBOLS 22 Slide motor 23 Seat front part raising / lowering motor 24 Seat rear part raising / lowering motor 31 Reclining motor h Harness 12 Drive circuit 13 Spike noise extraction circuit 131 Inrush wave removal circuit 132 Spike wave detection circuit 132a High frequency active filter 132b Inverting amplifier 132c Rectification & limit Circuit 132d Non-inverting amplifier 132e Non-inverting amplifier 132f Rectification & limit circuit 133 Waveform shaping circuit 133c Comparison & waveform shaping IC

Claims (7)

A seat body having a movable part;
A drive motor for driving the movable part;
A control unit for controlling the operation of the drive motor;
Wiring for supplying a drive current from the control unit to the drive motor by electrically connecting the control unit and the drive motor;
In a vehicle seat device comprising:
The control unit includes
A noise extraction circuit that extracts a noise signal output from the drive motor to the wiring as the drive motor rotates;
A control circuit for counting the number of rotations of the drive motor based on the signal of the noise extraction circuit;
Is provided ,
The noise extraction circuit is
An inrush wave removing circuit for removing an inrush current signal component from the drive current signal;
A high-pass filter circuit that is set to have a higher cutoff frequency than the inrush wave removal circuit and passes a signal of a noise component from a signal that has passed through the inrush wave removal circuit;
An amplifier circuit that amplifies the noise component signal to a saturation level;
A rectifier circuit that converts a positive / negative signal to a positive / negative signal among the noise component signals;
A waveform shaping circuit that compares a signal that has passed through the amplifier circuit and the rectifier circuit with a threshold value and outputs a signal having a predetermined waveform when the signal exceeds the threshold value;
That it comprises a seat apparatus according to claim.   As the drive motor, a slide motor that slides the seat surface portion of the seat body in the front-rear direction;
  As the drive motor, a seat surface rear raising / lowering motor that vertically moves the rear portion of the seat surface portion is provided in the seat surface portion,
  The slide motor is disposed along the front end surface of the seat surface portion of the seat body,
  The vehicular seat device according to claim 1, wherein the seat back rear raising / lowering motor is disposed so as to sandwich the control unit in the front-rear direction together with the slide motor.   As the drive motor, a link lining motor that changes the angle of the backrest of the seat body is provided in the backrest,
  3. The control unit is disposed between the reclining motor and the slide motor so that the reclining motor, the slide motor, and the control unit are arranged in a substantially straight line in the front-rear direction. The vehicle seat device according to claim.   A blower for supplying air from below the seat surface portion of the seat body;
  As the drive motor, a seat surface front raising / lowering motor that vertically moves the front portion of the seat surface portion is provided in the seat surface portion,
  The seat front part lifting motor and the control unit are arranged so as to sandwich the blower in the left-right direction,
  The vehicle seat device according to claim 2 or 3, wherein a harness connecting the seat surface front lifting motor and the control unit is routed around a rear end portion of the seat surface portion. The vehicle seat device according to claim 4, wherein a harness connecting the blower and the control unit is routed in a direction opposite to a direction in which the slide motor is arranged. The drive motor is a motor with a DC brush,
The vehicle seat device according to claim 1, wherein the noise signal is spike noise. The noise extraction circuit is provided with a forward rotation circuit and a reverse rotation circuit,
When the drive motor rotates forward, a signal via the forward rotation circuit is output to the control circuit, and when the drive motor rotates reversely, a signal via the reverse rotation circuit is output to the control circuit. The vehicular seat device according to any one of claims 1 to 6 .

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