KR101045987B1 - Electric seat controller - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorized seat control, and more particularly, to a motorized seat control device capable of efficiently controlling a motorized seat of a vehicle using fewer semiconductor switches than in the prior art.

The present invention relates to an electric seat control apparatus for adjusting the position of each part of a vehicle seat using a plurality of motors, wherein the four switches of the H-bridge circuit are used for controlling one of the at least two motors (the first motor). A pair of switches connected to at least one side of the first motor is shared to one side of the other motor (second motor) in close proximity to the first motor, to selectively control the first motor and the second motor. Characterized in that.

Electric Seat, Motor Control, Semiconductor Switch, H-Bridge

Description

Electric seat control device {Apparatus for controlling of electromotive seat}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric seat control apparatus, and more particularly, to an electric seat control apparatus capable of efficiently controlling an electric seat of a vehicle using fewer semiconductor switches than in the prior art.

Recently, due to the demand for increased convenience of the user, the vehicle lengthening has been rapidly progressing. In addition, the seat of the car has been implemented to change the attitude and movement using a motor beyond the conventional mechanical operation.

In addition, recently, the concept of electronic control is applied to a seat of a vehicle, and a motor is also used to adjust forward / backward of the seat or to adjust the inclination of the seat back. However, according to the user's preference, the motor for each part of the seat should be rotated forward or reverse.

In the initial electric seat, a relay switch was widely used as shown in FIG. 1A. However, due to problems of lifespan deterioration and noise caused by frequent on / off repetitive operation, recently, H- using a semiconductor switch as shown in FIG. I use a bridge.

However, since the direction of the current applied to the motor must be controlled in order to rotate the motor forward or reverse, at least four switches are required per one motor.

Thus, for the most basic state control of the seat, three motors are also used to implement the three functions of seat height, tilt and front / rear adjustment, consequently at least 12 switches were required.

High-end vehicles often use six to eight motors for precise adjustment of their seats, in which case the number of switches required is even greater.

When the number of switches increases, the area occupied by the control unit for driving the motor must increase, so the difficulty of design doubles as the number of switches increases.

In addition, current semiconductor switches are more expensive components than other electronic products, and as the number of switches increases, the cost required for the implementation of the motor controller increases significantly. Therefore, it is very inefficient to use four switches per motor.

This problem of efficiency arises from operating the motors individually, and since the actual user rarely adjusts the front and rear, the tilt and the height at the same time, it is necessary to minimize the number of switches if each motor is not operated simultaneously. By using only it will be able to drive the motor of the electric seat.

The present invention has been made to solve the above problems, and an object thereof is to provide an electric seat control apparatus capable of smoothly driving the electric seat while using a minimal semiconductor switch.

The present invention for achieving the above object, as an electric seat control device for adjusting the position of each part of the vehicle seat using a plurality of motors, used for the control of any one motor (first motor) of at least two motors A pair of switches connected to at least one side of the first motor among the four switches of the H-bridge circuit are covalently connected to one side of the other motor (second motor) adjacent to the first motor, and the first motor is connected to the first motor. And selectively controlling the second motor.

According to the present invention, while reducing the number of switches for driving the motor of the electric seat while implementing the function of the electric seat as it is, there is an advantage that can lower the manufacturing cost of the electric seat.

Furthermore, by reducing the number of switches, there is an advantage that can further reduce the design constraints of the control device by volume.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, with reference to Figure 2 will be described in more detail the electric seat control apparatus according to an embodiment of the present invention. 3 is a circuit diagram of the electric seat control apparatus according to the first embodiment of the present invention.

As shown in FIG. 2, in one preferred embodiment of the present invention, H is used for controlling any one of at least three or more motors 211, 212, and 213 (hereinafter, referred to as “first motor”) 211. A pair of switches 223 and 224 connected to at least one side of the first motor 211 among the four switches 221, 222, 223 and 224 of the bridge circuit is connected to another motor in proximity to the first motor 211. Hereinafter, the second motor is covalently connected to one side of 212 to selectively control the first motor 211 and the second motor 212.

Referring to Figure 2 in more detail the connection relationship of the first preferred embodiment of the present invention, each motor is connected to six switches (221 to 226) for controlling them by adjusting the power supply direction, respectively It is connected to the (+) terminal and the (-) terminal that the external power is drawn in, the (+) terminal is connected to the first switch 221, the third switch 223 and the fifth switch 225, (-) The second switch 222, the fourth switch 224, and the sixth switch 226 are connected to the terminal to change the direction of the current applied to each of the motors 211, 212, and 213. To control the rotation.

In addition, the first switch 221 and the second switch 222 is connected to one side of the slide motor 211, the third switch 223 and the fourth switch 224 is connected to the other side, the recline motor 212 One side of the third switch 223 and the fourth switch 224, the other side of the fifth switch 225 and the sixth switch 226 is connected.

In addition, the fifth switch 225 and the sixth switch 226 is connected to one side of the height adjustment motor 213, the first switch 221 and the second switch 222 is connected to the other side.

In summary, the present invention is a part of the switch for controlling the motor 211 of any one of the plurality of motors (211, 212, 213) 223, 224 shared connection with one side of the other motor 212 In this case, the switches 223 and 224 for driving the two motors 211 and 212 are commonly used.

Through this configuration, the present invention can selectively drive the two motors 211 and 212, thereby reducing the number of switches required to drive the motor.

In order to drive three motors as shown in FIG. 2, according to the prior art, a total of 12 switches should be used, four for each motor. However, in the first preferred embodiment of the present invention, six switches, which are half of them, are used. Only use the bay.

On the other hand, the motor (211, 212, 213) used in the present invention to drive each part of the seat at a predetermined position when the power is applied as mentioned above, when the external power is drawn in accordance with the opening and closing combination of the switch forward or It will reverse.

Taking the sliding motor 211 as an example, the power is supplied from the first switch 221 connected to one side of the sliding motor 211 to allow current to flow through the fourth switch 224 toward the negative terminal. If so, the sliding motor 211 is rotated forward, the seat (not shown) is advanced to the front.

On the contrary, when the third switch 223 and the second switch 222 are 'On', the sliding motor 211 is reversed while the seat is reversed backward.

Hereinafter, the operation of the electric seat control apparatus of the present invention having the same structure as described above with reference to FIG. 3.

3 is a table showing a switch combination used for driving the electric seat control apparatus of the present invention having the structure as described above. In the description, the same reference numerals as FIG. 2 refer to the same components that perform the same function.

As shown in FIG. 3, all the switches 221 to 226 are 'off' to stop all the motors 211, 212 and 213, and the first, second, and third to drive the sliding motor 211. It can be seen that the fourth switches 221 to 224 are used.

For example, as described above, in order to drive the sliding motor 211 in the forward direction, the first switch 221 and the fourth switch 224 of the four switches 221 to 224 are 'on', and reverse driving is performed. In order to do this, the second switch 222 and the third switch 223 should be 'On'.

In the first preferred embodiment of the present invention, the number of switches is reduced by sharing a part of the switch used to drive each motor with a switch used to drive other motors. In other words, the first switch as shown in FIG. Since the 221 and the second switch 222 are used to drive the sliding motor 211 and the height adjustment motor 213, simultaneous driving of the two motors is limited to another motor sharing a switch in the situation of driving one motor. Can be driven for simultaneous driving in the forward or reverse direction only.

For example, in more detail, when the sliding motor 211 is driven using the first switch 221 and the fourth switch 224, the height adjusting motor 223 is driven by closing the sixth switch 226. It only works in the direction it can.

On the other hand, the present invention is given priority to each motor as shown in Figure 3, this priority indicates the priority of the motor to operate preferentially when adjusting each part of the seat using the memory function .

According to the present invention, the motors 211, 212, and 213 may include information about a value to which each motor must adjust each part of the sheet to perform a memory function request signal and a memory function from an external processor such as an ECU (not shown). When receiving the setting information of the user including the, it is optionally simultaneously driven according to the previously set priorities with reference to the user setting information.

At this time, it is preferable that the sliding motor and the recline motor, which the user is likely to feel relatively change, have a high priority, and the height adjustment motor is set to have the next priority.

Next, with reference to Figure 4 to describe the electric seat control apparatus according to a second embodiment of the present invention. 4 is a circuit diagram of an electric seat control apparatus according to a second preferred embodiment of the present invention.

The second preferred embodiment of the present invention uses three motors 411, 412, 413 as in the first embodiment of the present invention, and is designed to be more easily implemented using a commercially available H-bridge circuit. It was.

In more detail, in the second preferred embodiment of the present invention, the first switch 421, the third switch 423, the fifth switch 425, and the seventh switch ( 427 is connected, and the (-) terminal is connected to the second switch 422, the fourth switch 424, the sixth switch 426 and the eighth switch 428.

In addition, the first switch 421 and the second switch 422 is connected to one side of the first motor 411, the third switch 423 and the fourth switch 424 is connected to the other side, the second motor 412 The third switch 423 and the fourth switch 424 is connected to one side, the fifth switch 425 and the sixth switch 426 is connected to the other side, the fifth switch to one side of the third motor 413 425 and the sixth switch 426, the other side is connected to the seventh switch 427 and the eighth switch 428.

5 shows a switch combination for explaining the operation of the second preferred embodiment of the present invention. As shown in FIG. 5, in the second preferred embodiment of the present invention, a combination of switches for operating some motors (a sliding motor and a recline motor in FIG. 5) may be achieved by using eight switches 421 to 428. Since they are orthogonal to each other, these two motors can be operated simultaneously.

However, the first switch 421 and the fourth switch 424 are closed to operate the sliding motor 411, and at the same time, the fifth switch 425 and the eighth switch 428 are 'on' so that the recline motor ( When operating the 412, the height adjustment motor 412 is operated regardless of the user's intention.

As described above, in the present invention, when two or more of the motors 411, 412, and 413 are to be operated at the same time, two motors 411 and 413 that are spaced apart from each other are interposed between the two motors 411 and 413. It is connected to each other through the H-bridge circuit of 412, the H-bridge circuit of the motor 412, by connecting or disconnecting the H-bridge circuits of the two motors (411, 413) provided in the spaced position Separation switch for the two motors (411, 413) provided in the spaced apart position to be driven at the same time should be further provided.

That is, as shown in FIG. 6, the ninth switch 429 is further provided between the third switch 423, the fourth switch 424, and the height adjusting motor 412. When the motor is turned off and the two motors 411 and 413 are driven, the height adjustment motor 412 may be prevented from being driven by the interference of the two motors.

Hereinafter, with reference to Figure 7 to describe the electric seat control apparatus according to a fourth embodiment of the present invention. 7 is a circuit diagram of the electric seat control apparatus according to a fourth preferred embodiment of the present invention.

As shown in FIG. 7, in the electric seat control apparatus according to the fourth preferred embodiment of the present invention, eight switches 721 to 728 are used for six motors 711 to 716.

The six motors used at this time may be set to slide the seat forward and backward, adjust the top / bottom tilt of the seat, adjust the height of the seat before and after, or adjust the headrest height of the seat.

Referring to FIG. 7, the connection relationship between these motors and each switch will be described below.

The first switch 721, the third switch 723, the fifth switch 725 and the seventh switch 727 are connected to the (+) terminal to which the external power is input, and the second switch () to the (-) terminal. 722, the fourth switch 724, the sixth switch 726, and the eighth switch 728 are connected.

In addition, the first switch 721 and the second switch 722 is connected to one side of the first motor 711, the third switch 723 and the fourth switch 724 is connected to the other side, the second motor 712 The third switch 723 and the fourth switch 724 is connected to one side, the fifth switch 725 and the sixth switch 726 is connected to the other side, the fifth switch to one side of the third motor 713 725 and the sixth switch 726, the other side is connected to the seventh switch 727 and the eighth switch 728.

In addition, a first switch 721 and a second switch 722 are connected to one side of the fourth motor 714, and a seventh switch 727 and an eighth switch 728 are connected to the other side of the fourth motor 714, and the fifth motor 715. The first switch 721 and the second switch 722 is connected to one side, the fifth switch 725 and the sixth switch 726 is connected to the other side, the third switch on one side of the sixth motor 716 723 and the fourth switch 724, the other side is connected to the seventh switch 727 and the eighth switch 728.

The electric seat control apparatus according to the fourth preferred embodiment of the present invention having such a configuration enables selective driving of six motors by only eight switch combinations.

In the prior art, since two 1-pole relays were provided for each motor for forward / reverse rotational driving of the motors, 12 relays were used to drive six motors. In addition, a total of 24 switches were used when using H-bridge semiconductor switches.

However, the present invention can smoothly drive the electric seat using only eight switches through the configuration as described above.

8 shows a switch combination for driving the electric seat control apparatus according to the fourth embodiment.

Here, as in the above table, in order to drive each motor, the outer pair and the inner pair of the switches shown in the same raw are selectively closed and the forward rotation and the reverse rotation are determined.

In other words, taking the sixth motor 716 as an example, when the third switch 723 and the eighth switch 728 are turned 'on', the motor rotates forward and the fourth switch 724 and the seventh switch 727 are turned on. If you do it will be reversed.

Meanwhile, also in this case, as in the third preferred embodiment of the present invention, a configuration may further include a separate switch (not shown) for simultaneously driving a motor having a switch combination showing orthogonality to each other.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Various modifications and variations are possible without departing from the scope of the appended claims.

For example, the present invention has been described as an example only when the number of the motor is three or six, the present invention is not necessarily applied only in this case, the arrangement of the motor performing each function does not match the accompanying drawings. Even if it does not, it is good to implement this invention.

1 is a circuit diagram showing an embodiment of a conventional electric seat control apparatus,

Figure 2 is a switch configuration of the electric seat control apparatus according to a first embodiment of the present invention,

3 is a table showing a switch combination used to drive the electric seat control apparatus shown in FIG.

Figure 4 is a switch configuration of the electric seat control apparatus according to a second embodiment of the present invention,

FIG. 5 is a table showing a switch combination used to drive the electric seat control apparatus shown in FIG. 4; FIG.

Figure 6 is a switch configuration of the electric seat control apparatus according to a third embodiment of the present invention,

7 is a switch configuration of the electric seat control apparatus according to a fourth embodiment of the present invention,

8 is a table showing a switch combination used to drive the electric seat control apparatus shown in FIG.

Claims (4)

delete Electric seat control device for adjusting the position of each part of the vehicle seat using a plurality of motors, The plurality of motors are at least three, Two motors provided spaced apart from each other of the at least three motors, Connected to each other through the H-bridge circuit of the motor interposed between the two motors, In the H-bridge circuit of the motor interposed between the two motors, Electric seat control device further comprises a separation switch for connecting or separating the H-bridge circuit of the two motors provided in the spaced position with each other. According to claim 2, The electric seat control device, When the memory function request signal and the user's setting information are transmitted from the outside, each motor is individually driven according to a preset priority with reference to the user's setting information. According to claim 2, The electric seat control device, A switch pair of one side of the H-bridge circuit connected to any one motor (first motor) of the two motors spaced apart from each other and one side of the H-bridge circuit connected to the motor (second motor) provided to be spaced apart from the first motor A fifth motor connected to a switch pair of; A sixth motor connected to the switch pair of the other side of the H-bridge circuit connected to the first motor and the switch pair of the other side of the H-bridge circuit connected to the second motor; And And a fourth motor connected to the switch pair of one side of the H-bridge circuit connected to the first motor and the switch pair of the other side of the H-bridge circuit connected to the second motor.

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