KR20010019118A - A driving device of the power seat using one motor in a vehicle - Google Patents

Abstract

PURPOSE: A power seat drive utilizes a single motor to control the movement of seat to all directions and makes it easy to add functions to power seat. CONSTITUTION: A power seat drive comprises a direct current motor(401), gear boxes(200, 300, 400), and a control part. The direct current motor(401) is supplied with direct current electricity to generate certain rotatory torque. The gear boxes(200, 300, 400) comprise power transmitting devices and power selecting devices. Power transmitting devices receive power from the direct current motor(401), a power source, and transmit, and selectively output the power in decelerated speed. Power selecting devices choose whether the power transmitting devices transmit power. The control part comprises driving circuits and a switching control unit. The driving circuits control the direct current motor(401) depending on switching signals input by a driving switches when the gear boxes(200, 300, 400) are series-combined. The switching control unit controls generally to prevent the multiple switching actions of the driving circuits.

Description

A driving device of the power seat using one motor in a vehicle}

The present invention relates to a power seat of a vehicle, and more particularly, to a power seat driving apparatus of a vehicle using a single motor capable of controlling all flow directions of the seat through a single motor.

In general, at the lower end of a power seat of a vehicle, for example, a driver's seat power seat, two motors for forward and backward driving of the seat and one motor for vertical driving are provided. The driving of such a motor allows the driver to operate a separate switch to determine the flow direction of the seat. Therefore, the seat is typically provided with three motors, and the position of the seat through the two switches.

From this, a problem arises that the conventional power seat causes a factor of cost increase, as a plurality of power sources and a gearbox for sliding the seat from the power source are provided. In addition, since a plurality of power sources only perform their respective functions, it is difficult to add the function of the power seat, which causes a problem that the functionality of the system is limited.

The present invention was created to solve the above problems, and an object of the present invention is to enable the flow direction of the seat to be set using a single motor, and to facilitate the addition of the function of the power seat, An object of the present invention is to provide a power seat driving apparatus for a vehicle using a single motor capable of suppressing an increase in unit cost.

A power seat driving apparatus for a vehicle using a single motor according to the first aspect of the present invention for achieving the above object is a DC motor for generating a predetermined rotational torque through a DC power source; A gear box configured to receive power from the power unit from one side and transmit the power to the other side, and to selectively reduce and output the power, and a power selector to select whether the power transmission unit transmits power; And a driving circuit for controlling each of the DC motors according to a switching signal applied through a driving switch when the plurality of gearboxes are coupled in series, and a switching to collectively control the plurality of switching operations of the driving circuit. Characterized in that consisting of a control unit consisting of a control device.

The driving circuit of the power seat driving apparatus of a vehicle using a single motor according to the second aspect of the present invention for achieving the above object is accompanied by the operation of the solenoid when switching the one-side contact of the driving switch when the B contact switch is not operated. A power supply is provided such that the DC motor rotates in one direction, and a power supply is provided so that the DC motor rotates in the other direction together with the operation of the solenoid when the other contact point of the driving switch is switched; The switching control device includes a decoder and an oar gate for detecting the inflow of two or more operation signals by receiving operation signals from the solenoids, and a relay for determining whether to supply power according to an output signal of the oar gate. It is characterized by.

1 is a cross-sectional view showing the present invention.

2 is a partial cross-sectional view for describing the gear shift of FIG. 1.

3 is a cross-sectional view showing an embodiment of the present invention.

4 is a block diagram for explaining the control of the present invention.

FIG. 5 is a wiring diagram illustrating an example of the driving circuit of FIG. 4.

6 is a circuit diagram illustrating an example of the switching control device of FIG. 4.

<Description of the code | symbol about the principal part of drawing>

201: main shaft 205: trans main gear

211: Gear Guide 219: Trans Gear

223: Solenoid driver 235,335,435: B contact switch

237,337,437: Solenoid 200,300,400: Gearbox

200-1,300-1,400-1: Drive circuit 401: DC motor

500: switching controller 600: control unit

701: decoder 703: OR gate

RY, 705: relay D: diode

S1, S2, S3: Drive Switch

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a gearbox of the present invention. First, the gearbox 200 of the present invention with reference to FIG. 1 is applied to the other end by receiving power through the main shaft 201 to one side end of the case 290, and at the same time, the power selectively to the outside It can be sent. Accordingly, the main shaft 201 is caused by the flow of the solenoid driver 223 for selecting the power, the trans gear 219 through which power is transmitted by the driving force of the solenoid driver 223, and the trans gear 219. A trans main gear 205 and a first gear 207 that receive power from the second gear; a second gear 217 for increasing torque by reducing the rotational speed of the first gear 207; and the second gear. And a third gear 225 for transmitting power to the outside of the gearbox 200 by the torque obtained from 217.

In addition, the solenoid driver 223 is mounted on the inner side of the separator 255 provided in the case 290, and the solenoid 237 for generating a magnetic force of a predetermined size, and the attraction or repulsive force of the solenoid 237 It is supported by the solenoid drive shaft 241 to linearly move a predetermined distance by the solenoid drive shaft 241, a solenoid shaft 243 for extending the flow force to transmit a flow force, and the solenoid shaft 243 The first spring 233 and the switch 235 facing the solenoid 237 to detect the operation state of the solenoid drive shaft 241 for the outwardly touching the solenoid drive shaft 241 from the solenoid 237 is Is mounted. Here, a part of the solenoid shaft 243 is capable of flowing away from the solenoid driver 223, the solenoid shaft 243 is extended in one end, so as to flow between the solenoid driver 223 and the separator 255. By supporting the solenoid drive shaft 241, the end has a bottleneck shape.

In addition, the solenoid shaft 243 is seated on the trans gear guide 203 for bringing the trans gear 219 into close contact, such that the trans gear guide 203 is interlocked when the solenoid driver 223 is driven. Accordingly, a tension spring 221 for returning when the trans gear guide 203 is interlocked is provided, and the guide extension shaft 247 extends the lock groove 245 toward one side of the trans gear guide 203. With extension.

The lock groove 245 allows a lock to be performed from a separator hole 257 installed at a specific portion of the separator 255 and a stop cone 249 seated at the separator hole 257. The lock function is achieved by the bottleneck structure of the solenoid shaft 243 and the lock function. Therefore, between the stop cone 249 and the separator hole 257, a second spring 251 for protruding the stop cone 249 downward is compressed to support the locking step 259, the stop cone 249 When the protrusion protrudes upward by the solenoid shaft 243, a stop key 253 is drawn into the lock groove 245.

On the other hand, the gear guide 211 and the gear guide 211 to prevent the trans gear guide 203 mounted on the main shaft 201 is not separated from the predetermined distance by the tension spring 221 main shaft 201 A first key 213 is provided to fix on). The other side of the main shaft 201 is provided with a shaft connector 209 and a second key 215 for transmitting the driving force of the motor without deformation, and the second gear 217 and the third gear 225. The second rotary shaft 229 and the third rotary shaft 231 for the smooth rotation of the () so that there is no flow by the separator 255. The third gear 225 is equipped with a cable connector 227 for connecting a flexible shaft for the transmission of the driving force.

Hereinafter, the operation of the present invention according to the above configuration will be described.

First, the main shaft 201 receives a rotational force of a DC motor, at which time the drive of the DC motor is operated by the B contact switch 235. That is, the power is applied to the DC motor only when the solenoid drive shaft 241 flows. Therefore, when the user wants to generate power to the cable connector 227, first, power is applied to the solenoid 237 through a predetermined switching.

Since the magnetic force generated by the solenoid 237 is greater than the elastic force of the first spring 233, the solenoid drive shaft 241 is transferred from the attraction force by the magnetic force of the solenoid 237. The transfer of the solenoid drive shaft 241 interlocks the solenoid shaft 243 and simultaneously transfers the trans gear guide 203 in the same direction.

This is that one end of the solenoid shaft 243 is in close contact with a portion of the trans gear guide 203, and is transferred to overcome the restoring force of the tension spring 221. In addition, as the bottleneck shaft provided at one end of the solenoid shaft 243 is linked, the transfer of the shaft transfers the stop cone 249 upward. The transfer of the stop cone 249 occurs together with the finger of the second spring 251. The transfer time of the stop cone 249 is the lock groove 245 provided on the guide extension shaft 247 is a stop key 253. Stop cone 249 is operated when transferred to the top of the). Therefore, the bottleneck structure is formed based on this.

That is, the driving of the solenoid 237 transfers the trans gear guide 203, so that the trans main gear 205 is connected to the main shaft 201, such that the connection process is more accurate and stable In order for the trans gear guide 203 to be transported a certain distance, it is to be locked by the stop cone 249. Therefore, even if a minute change in movement of the solenoid shaft 243 due to the change in the magnetic force of the solenoid 237, the trans gear guide 203 is to be stably connected to the trans main gear 205.

On the other hand, the connection state of the trans gear guide 203 and the trans main gear 205 will be described in more detail based on the accompanying drawings.

2 is a partial cross-sectional view for explaining a power transmission state of the present invention. First, referring to FIG. 2, the trans main gear 205 provided at one end of the main shaft 201 allows idle rotation on the main shaft 201 by a bearing (not shown). Such a bearing is a ball bearing or An example is a bearing in which Teflon is treated on a surface. Of course, the trans main gear 205 is formed with a guide or fixing a bearing so that there is no transport error on the main shaft 201, for convenience of description, a conventional technique is not shown.

One end of the trans main gear 205 is provided with a cone-shaped groove, and a main intergear 305 is formed on the surface of the cone-shaped groove. The main inter gear 305 is implemented to be engaged with the trans gear 219 at a predetermined distance, the trans gear 219 is interlocked with the trans gear guide 203 in a horizontal direction, the trans gear 219 is the main A ball bearing 303 is provided at one side of the trans gear guide 203 to rotate in conjunction with the shaft 201.

An inner axial groove of the main shaft 201 is provided on the inner side of the trans gear 219, and a slide key 301 corresponding to the axial groove is mounted on the main shaft 201.

According to such a configuration, when the main shaft 201 is rotated, the trans gear 219 is engaged with the slide key 301 to rotate. At this time, the trans main gear 205 has the trans gear guide 203 at a predetermined distance. If it is not transported, it will not rotate. That is, the main shaft 201 does not transmit power to the trans main gear 205. On the other hand, when the trans gear guide 203 transfers a predetermined distance, the trans gear 219 is guided from the slide key 301 and coupled to the main inter gear 305. Even in such a situation, the trans gear 219 is rotated together with the main shaft 201, but the trans gear 219 and the main inter gear 305 can be fastened due to the structural shape of the cone shape.

Thus, the main shaft 201 transmits power to the trans main gear 205.

As a result, the driving of the solenoid 237 causes the trans gear 219 to be seated in the trans main gear 205. Meanwhile, at the same time, the switch 235 of the contact B is switched to the switching turn-on state, so that the DC motor starts to rotate. The driving of the DC motor rotates the main shaft 201, and the main shaft 201 rotates the trans main gear 205 based on the above-described process. Of course, the shaft connector 209 is also rotated so that power transmission is supplied to the other gearbox.

The rotation of the trans main gear 205 interlocks the first gear 207, and the first gear 207 rotates the second gear 217 hinged to the second rotation shaft 229. At this time, the first gear 207 and the second gear 217 is decelerated from the mutual gear ratio to increase the torque, and the torque of the second gear 217 rotates the third gear 225 to achieve a constant ratio of torque. Increase Accordingly, the third rotation shaft 231 of the third gear 225 rotates the cable connector 227 to transmit the driving force of the DC motor to the outside of the gearbox 200.

On the other hand, when the driving force is to be stopped, the power supplied to the solenoid 237 is cut off, which cuts off the attraction force with the solenoid drive shaft 241 and the solenoid shaft by the first spring 233. (243) is to be restored. Restoration of the solenoid shaft 243 transfers the bottleneck shaft, causing the stop cone 249 to be pulled downward from the second spring 251. Accordingly, the stop key 253 is separated from the lock groove 245, and the trans gear guide 203 is restored by the tension spring 221.

Restoration of the trans gear guide 203 is that the trans gear 219 is removed from the main inter gear 305, the power transmission to the trans main gear 205 is blocked. At this time, the solenoid drive shaft 241 turns off the switch 235 from the restoring force by the first spring 233 to cut off the power supplied to the DC motor.

On the other hand, the shaft connector 209 to be connected to the main shaft of another gearbox, it is possible to disperse the driving force of the DC motor as described on the basis of the accompanying drawings as follows.

3 is a cross-sectional view for explaining the use of the present invention. First, the present invention referring to FIG. 3 includes a DC motor 401 whose rotation direction is determined from a power supply control and a driving force applied from a rotation shaft of the DC motor 401 through a predetermined control to drive the DC motor 401. A plurality of gear boxes (200, 300, 400) for distributing or transmitting the is provided. Each of the gearboxes 200, 300, and 400 has a respective flexible shaft to perform selective power transmission.

Hereinafter, the operation according to the above configuration will be described.

For example, it is assumed that the flexible shaft connected to the gear box 200 is used for sliding the power seat of the vehicle, and the memory boxes 200 and 300 are used for vertical movement of the power seat. At this time, when the user wants to transfer the power seat of the vehicle, the drive switch connected to the gearbox 200 is operated. The drive switch operates the solenoid of the gearbox 200 to drive the DC motor 401 and simultaneously transmits the driving force of the DC motor 401 to the flexible shaft 403 connected to the gearbox 200. Driving a sliding gear box (not shown) for sliding the seat.

At this time, the main shafts of the gearboxes 300 and 400 are receiving the driving force of the DC motor 401, but as the driving switches connected to the respective gearboxes 300 and 400 are not operated, the respective flexible shafts are not rotated. Do not.

On the other hand, when the user wants to move the power seat, the drive switch (in one embodiment of the present invention implements one drive switch) provided in the gearboxes 300 and 400 is operated to operate the DC motor 401. The driving force is applied to the gearbox 300 and the gearbox 400 to rotate each flexible shaft. Of course, the driving force of the DC motor 401 is not transmitted to the flexible shaft of the gearbox 200.

Then, look at the connection of the drive switch of the system as follows.

4 is a block diagram illustrating each switching relationship for controlling a plurality of gearboxes. This block diagram is an example that the drive switch corresponding to each gear box is provided to correspond. First, the present invention with reference to Figure 4 is provided with three gear boxes (200, 300, 400), each gear box is provided with drive switches (S1, S2, S3) for selectively transmitting the driving force of the DC motor 401, Control circuits 200-1, 300-1, 400-1 are provided to drive the gear boxes 200, 300, and 400, respectively. The control circuit of each gearbox is connected to solenoids 227, 327, 427 and B contact switches 235, 335, 435, respectively. In addition, a switching control device 500 is separately provided so that each gearbox cannot be operated simultaneously by the drive switch.

Referring to the operation of such a configuration as follows.

For example, when the driving switch S1 is moved forward or backward, power is supplied from the switching control device 500 to the driving circuit 200-1. It is powered by the solenoid 227 and the operation of the solenoid 227 turns on the B contact switch 235. The turn-on operation of the B-contact switch 235 is driven in a direction corresponding to the forward or backward of the seat of the rotation direction of the DC motor 401. The operation state of such a system is the same in the operation of the drive switch S2 and the drive switch S3.

On the other hand, when the user operates two or more of the drive switches (S1, S2, S3), that is, when two or more of the solenoids of the solenoids (227, 327, 427) is operated, the switching control device 500 detects this Shut off the power supply (Vcc) supplied to each drive switch. This is to stably prevent the rotation direction of the DC motor 401 from being determined when a plurality of gearboxes transmit driving force in different directions.

Next, the driving circuit will be described in detail.

5 is a wiring diagram showing the drive circuit. Referring to FIG. 5, the driving circuit 220-1 includes a relay RY having two normally open terminals NO, two flat cyclone terminals NC, and two common terminals COM, and the relay RY. And a diode (D) connected to one side of the common terminal and one side of the relay driving terminal. In addition, the normally closed terminal NC and the normally open terminal NO are connected so that each terminal of the relay RY is opposed to each other, and the one normally closed terminal NC and the normally open terminal NO are DC motors 401. )

The forward and backward terminals (terminals for operating the seat) of the driving switch S1 are connected to one end of the driving coil of the relay RY and the cathode terminal of the diode D, respectively, and the diode D The cathode terminal of is connected to one input terminal (IN1) of the switching control device 500.

Hereinafter, the operation according to the above configuration will be described.

First, after the power supply Vcc is supplied to the driving switch S1 through the switching control device 500, the user moves the driving switch S1 upward when the user wants to advance the seat of the vehicle. Then, the power supply Vcc is supplied with power to the driving coil of the relay RY through the driving switch S1, and at the same time, the power supply Vcc is applied to one common terminal COM of the relay RY through the diode D. do. At this time, as the relay RY is driven, the common terminal COM and the normally open terminal NO are connected to each other, and the power supply Vcc is supplied to one end of the DC motor 401.

The power supply Vcc is applied to the solenoid 227 to start the operation of the solenoid. The start of operation of the solenoid 227 turns on the B contact switch 235, and the turned on B contact switch 235 is contact switched so that the other common terminal COM of the relay RY is connected to earth. Accordingly, the DC motor 401 is supplied with power Vcc to one side and grounded to the other side to determine the rotation direction. This rotation direction is a direction for advancing the seat, and drives the flexible shaft mounted on the gearbox 200.

On the other hand, when the transfer operation of the sheet is to be completed to switch to the contactless state of the intermediate position, which cuts off the power supplied to the solenoid 227, induces restoration by the first spring 233. From this, the B contact switch 235 is turned off to block the earth state induced to the other end of the DC motor 401 to stop the driving of the motor.

In addition, when the user wants to switch the sheet feeding direction, the driving switch S1 is switched downward. Then, the power supply Vcc supplied from the switching control device 500 is applied to the cathode side of the diode D and is supplied to one common terminal COM of the relay RY. Since no power is applied to the driving coil of the relay RY, the contact state of the relay RY maintains the state in which the normally closed terminal NC and the common terminal COM are connected.

That is, the power Vcc flowing through the driving switch S1 is supplied to the other side of the DC motor 401 through the normally closed terminal NC. The solenoid 227 is supplied with power, and the operation of the solenoid 227 is performed. As the operation of the solenoid 227 turns on the B contact switch 235, the other side of the common terminal COM of the relay RY is connected to earth. Then, the earth state is induced to one side of the DC motor 401 due to the connection state between the other end common terminal COM and the other end normally closed terminal NC of the relay RY.

Thus, as described above, the direction of rotation of the DC motor 401 is reversed so that the driving direction of the sheet is switched.

However, when another driving switch is operated simultaneously with the driving of the driving switch S1, the switching controller 500 cuts off the supply of power Vcc to each of the driving switches S1, S2, and S3. Based on the illustrated drawings as follows.

6 is a circuit diagram illustrating a switching control device 500. First, the switching controller 500 has three input terminals as an example. When a plurality of gearboxes are connected, the switching controller 500 may also be increased to a plurality of input terminals. As shown in the drawing, the switching controller 500 includes an IC 701 and an OR gate 703 for detecting that two or more signals of three input signals are simultaneously input, and an output of the OR gate 703. A relay 705 is provided for determining whether to supply power Vcc based on the state. The resistor R and the transistor Q are relay 705 driving circuits.

Meanwhile, as an embodiment of the present invention, the IC 701 uses a decoder.

Hereinafter, the operation of the above configuration will be described.

First, when the first input terminal IN1 has a signal input, only the "1" terminal of the IC 701 generates an output signal. When only the second input terminal IN2 has a signal input, only the "2" terminal of the IC 701 generates an output signal, and when only the third input terminal IN3 has a signal input, the IC 701 Terminal only generates an output signal. If the logic of such signal output is explained based on Table 1,

Input status Output status 0 One 2 3 4 5 6 7 × HIGH IN 1 HIGH IN 2 HIGH IN 3 HIGH IN 1, IN 2 HIGH IN 1, IN 3 HIGH IN 2, IN 3 HIGH IN1, IN2, IN3 HIGH

First, except for the case where only the signal is introduced from the input terminals IN1, IN2, and IN3, all other parts are determined to have at least two signals simultaneously or no signal. That is, when any one of signals "3", "5", "6", and "7" is output in the output state of the IC 701, it is determined that there are two or more input signals.

Therefore, the false gate 703 is connected to the output terminals of "3", "5", "6", and "7" to determine whether there are two or more signals flowing into the IC 701. The transistor Q is operated through the resistor R. The operation of the transistor Q is to supply the power supply Vcc to the drive coil of the relay 705, and the power supply Vcc is connected to the normally open terminal NO through the common terminal COM. Thus, the power supply (Vcc) is not normally applied to the closing terminal (NC), the power supply to the drive switch (S1, S2, S3) is cut off.

On the other hand, when only one side of the input terminal of the switching control device 500 has a signal inflow, the "1" terminal or "2" terminal, "4" terminal of the IC 701 as shown in Table 1 described above Since only one side of the detection signal is generated, the false gate 703 outputs only a low level. Accordingly, the transistor Q is maintained in the turned off state, and thus the power supply Vcc is not applied to the driving coil of the relay 705. This maintains the common terminal COM of the relay 705 and the normally closed terminal NC connected, so that the power supply Vcc connected to the common terminal COM passes through the normally closed terminal NC. Power is supplied to the drive switches S1, S2, and S3.

According to the present invention described above, one DC motor is used to drive the power seat of the vehicle, thereby reducing the use of expensive motors and thus reducing the cost and weight.

As mentioned above, although this invention was demonstrated concretely by the above-mentioned Example, the power seat drive apparatus of the vehicle using the single motor which is this invention is not limited to this, It is not a normal of those skilled in the art, and its deformation within the ordinary knowledge of those skilled in the art. And improvement is possible.

Claims (3)

In the driving device for flowing the power seat of the vehicle, A DC motor 401 for generating rotational torque through a DC power source; Gear box consisting of a power transmission device for receiving the power of the power unit from one side to transmit to the other side, and selectively reduce the output of the power, and a power selector for selecting whether or not the power transmission device transmits power ( 200,300,400); And Driving circuits 200-1, 300-1, 400 for controlling the DC motor 401 according to a switching signal applied through driving switches S1, S2, and S3 when the gear boxes 200, 300, and 400 are coupled in series. -1), and a control unit 600 consisting of a switching control device 500 for controlling the overall control so that a plurality of switching operations of the driving circuit (200-1,300-1, 400-1) is not made Power seat driving device of a vehicle using a motor. According to claim 1, wherein the power transmission device of the gear box is mounted to one side of the case 290, the main shaft for transmitting the power of the power unit 201; A transgear 219 mounted on the main shaft 201 to determine whether to transmit power through a predetermined distance axial feed; A trans gear guide (203) for performing a shift by flowing the trans gear (219); A trans main gear 205 spaced apart from the trans gear 219 by a predetermined distance and transmitting the power when the trans gear 219 is fastened; A first gear 207 mounted to one end of the trans main gear 205 for transmitting rotational force; A second gear 217 that receives power from the first gear 207 and decelerates it; And It is made of a third gear 225 that receives the power from the second gear 217 and outputs the deceleration torque through the flexible shaft 403, The power selector of the transmission unit may include a solenoid drive shaft 241 interlocked with the presence or absence of magnetic force of the solenoid 237; A solenoid shaft 243 interlocked with the solenoid drive shaft 241 for flowing the trans gear guide 203; And Power seat driving device of a vehicle using a single motor, characterized in that consisting of the B contact switch (235) for determining whether the solenoid (237) operation. The solenoid 237, 337, and 437 of claim 1, wherein the driving circuits 200-1, 300-1, 400-1 switch the one-side contact of the driving switches S1, S2, S3 when the B contact switches 235, 335, 435 are not operated. In addition to the operation of the power supply is made so that the DC motor 401 rotates in one direction, and the operation of the solenoid (237, 337, 437) when switching the other side contact of the drive switch (S1, S2, S3), A relay RY and a diode D to which power is supplied so that the motor 401 rotates in the other direction; The switching controller 500 receives an operation signal from the solenoids 237, 337, and 437, respectively, and includes a decoder 701 and an oal gate 703 for detecting the inflow of two or more operation signals, and the oal gate 703. Power seat driving device of a vehicle using a single motor, characterized in that consisting of a relay (705) for determining whether to supply power (Vcc) in accordance with the output signal of the.