KR101091408B1 - Driver of electrically moving seat of automobile - Google Patents

Abstract

The present invention relates to a driving driver for a motor vehicle seat, wherein instead of connecting an excitation coil and an operation switch in series, a current from the power supply is connected to the operation switch from a branch point of the first connection line connecting the excitation coil of the power supply and the relay. A second connecting line is provided, and an electrical resistor is positioned in the second connecting line so that the current flowing in the second connecting line is adjusted to be smaller than the current flowing in the exciting coil, and the branch point is connected to the exciting coil only when the operation switch is ON. By arranging a transistor to allow energization and selectively energizing the excitation coil through the first connection line, while controlling the current applied to the operation switch to a range of 0.5 mA to 30 mA for DC 6V to 16V, which is an automotive power source, The current applied to the excitation coil of the relay can be maintained at several hundred mA or more, so that low energization Flow only acceptable, but provides a driving driver of the electric car seat that can be applied to the tact switches low noise inexpensive and at the same time ensuring the reliability of the relay operation by the operation switch.

Automotive Electric Seats, Noise, Tact Switches, Relays, Transistors, Excitation Coils

Description

Drive driver of car electric seat {DRIVER OF ELECTRICALLY MOVING SEAT OF AUTOMOBILE}

The present invention relates to a drive driver of a motorized seat of a vehicle, and more particularly, to a drive driver of a motorized seat for a vehicle that can use an operation switch that allows only a low current while using a relay in which a high current is applied for switching operation. It is about.

In general, the seat is provided inside the automobile seat, including the driver's seat, it is also possible to move the seat back and forth to change to a comfortable state suitable for the physical condition of the occupant.

In this way, the seat can be moved forward and backward in a manner in which the occupant is forced to manually move the seat forward or backward as desired, while the occupant manually releases the latch. By simply operating the switching, it is divided into a method of driving the electric drive motor to move the seat forward or rearward as desired as desired.

Among them, a configuration for manually moving the seat forward or backward is disclosed in Korean Patent Laid-Open Publication No. 10-2006-53798. That is, as shown in FIG. 1, the user manually operates the adjustment lever 2 of the front lower part of the seat 1, and is fixed to the upper conveying member 3 and the bottom which are integrally coupled with the seat 1. The passenger is configured to move the seat 1 forward or backward after releasing the restraint with the fixed stator 4. At this time, the first transfer fixing member 7 protrudes downward from the bottom surface of the upper transfer member 3 so that the movement of the sheet 1 is between the end 5 of the holder and the first transfer fixing member 7. The sliding motion of the seat 1 is prevented by the compression spring 6 installed in the.

However, this configuration of manually adjusting the position of the seat not only causes inconvenience and hassle for the occupant, but also finely adjusts because the user adjusts by directly pushing or pulling the seat 1 forward and backward. There was a problem that was difficult to do.

Accordingly, the transmission sheet as shown in FIG. 2 has been devised. In the electric seat shown in Fig. 2, when any one of the front and rear drive switches 11 and 31 for moving the car seat forward and backward is turned on, the car seat is moved to contact the limit switches 13 and 23 to turn it OFF. It is driven to move automatically by the drive motor 20 until it.

More specifically, when the front drive switch 11 is operated ON by the occupant, the front limit switch 13 is turned OFF to move the electric seat forward when the motor vehicle seat is at a predetermined frontmost position. Don't let that happen. However, when the automotive electric seat is located behind the predetermined frontmost position, the limit front switch 13 is also turned on, so that a predetermined current is applied to the excitation coil 12a of the relay 12 so that the relay 12 The switch 12b is turned ON, and the drive motor 20 is driven to rotate in the forward direction to move the electric seat forward.

Similarly, when the rear drive switch 31 is operated ON by the occupant, the rear limit switch 33 is turned OFF when the motor vehicle power seat is in the predetermined rearmost position so as not to move the electric seat backward. However, when the automotive electric seat is located in front of the predetermined rearmost position, the limit rear switch 33 is also turned on, so that a predetermined current is applied to the exciting coil 32a of the relay 32 to relay 32. Switch 32b is turned ON, and the drive motor 20 is driven to rotate in the reverse direction to move the electric seat backward.

In the drawings, reference numeral 99 denotes a ground.

As described above, the conventional electric seat drive driver 1 configured as shown in FIG. 2 requires relays 12 and 32 to drive the electric drive motor 20 in the forward and reverse directions, respectively. Conventionally, a micro switch or the like, which can withstand high currents of about 100 mA or more, has been applied to the drive switches 11 and 31 for driving the drive motor 20, but recently, operation noise that is ticking while maintaining a user's operation click feeling There is an attempt to apply an inexpensive and quiet tact switch in order to provide an environment in which the electric seat can be controlled in a quiet environment and to reduce the manufacturing cost of the drive driver 1 of the electric seat. come.

However, since the tact switch is likely to be burned out when a current of about 30 mA or more flows, if the tact switch is applied to the electric seat drive driver 1 shown in Fig. 2, the electric seat is driven without failure during the service life of the vehicle. There has been a serious problem with the possibility of not being able to. In addition, if the current value applied to the drive switches 11 and 13 shown in FIG. 2 is lowered to 30 mA or less for the application of the tact switch, the relays 12 and 32 that switch operation must be applied when a conduction current of several 100 mA or more is applied. The problem that the switching operation of the relays 12 and 32 is not made because the value of the energizing current applied to the exciting coils 12a and 32a is reduced.

Therefore, while a tact switch that allows only a low conduction current of 30 mA or less can be applied, there is a need for a driving driver of an electric seat capable of passing a high current of 100 mA or more to the exciting coils 12a and 32a of the relays 12 and 32. Is rising.

The present invention provides a drive driver for a motorized seat for a vehicle that enables to use a control switch that allows only a low conduction current while using a relay that is switched when a high conduction current is applied to solve the problems as described above. For that purpose.

In addition, another object of the present invention is to enable an electric vehicle seat to be driven forward and backward in a quieter low noise environment by applying an operation switch that operates reliably for a long time when a low conduction current is applied.

In addition, the present invention can be applied to a more inexpensive tact switch than a conventionally used operation switch, so that another object of the present invention is to be able to manufacture a drive driver of a motorized electric seat more cheaply.

In order to achieve the object described above, the present invention provides a drive driver for a motor vehicle seat which moves the motor vehicle seat forward and backward by rotating the drive motor in a forward and a reverse direction. An operation switch selectably operated by a user to rotationally drive the drive motor forward and backward to move in the forward and backward directions; A power supply for supplying current to the drive motor; A first relay connecting two contacts to each other so as to apply a positive current from the power supply to the driving motor when a current greater than a predetermined value flows from the power supply to the first excitation coil; A second relay connecting the two contacts to each other so as to apply a reverse current from the power supply to the driving motor when a current greater than a predetermined value flows from the power supply to the second excitation coil; Located at a branch point of the second connection line connecting the operation switch from the first connection line between the power supply and the excitation coil, allowing the current to energize the excitation coil only when a current is applied to the operation switch. A transistor; And an electrical resistor positioned on the second connection line connecting the transistor and the operation switch, wherein a current applied to the operation switch is controlled to be smaller than a current applied to the excitation coil, and a current is applied to the operation switch. Provided is a driving driver for a motor vehicle seat, wherein a current is supplied to the excitation coil only when energized.

Instead of connecting the excitation coil and the operation switch in series from the power supply V +, a second connection line is provided from the first connection line connecting the power supply and the excitation coil of the relay to the operation switch at the branch point, and the second connection line. An electrical resistor is installed in the power supply so that the current flowing through the second connection line is controlled to be smaller than the current flowing through the excitation coil, and the current is energized through the first connection line with the excitation coil only when the current is energized by the operation switch. This is to allow the use of an operation switch that allows only low conduction current while using a relay that must be applied for switching operation.

In this way, while applying a direct current of 6V to 16V used as a vehicle standard voltage as it is, while applying a low current in the range of 0.5mA to 30mA while applying a current applied to the switch for manipulating the movement of the electric seat is applied to the excitation coil of the relay The current can be maintained as high as hundreds of mA or more, so that a tact switch can be applied to the driving driver of the electric seat, which ensures the operation reliability of the relay and realizes a low noise and quiet environment.

As described above, the present invention relates to a drive driver of a motorized seat for an automobile, and the excitation coil is provided only when the operation switch is ON for switching operation of a relay required for applying a forward and reverse current to the drive motor. It is possible to energize a high current of more than several hundred mA, while controlling the value of the electric resistor so that a low current of 30 mA or less can be supplied to the operation switch, thereby allowing only a low current regardless of the current flowing in the excitation coil of the relay. An advantageous effect is obtained which makes it possible to apply the operation switch to the drive driver of the electric seat.

Through this, the present invention can be applied to the drive driver of the electric seat can be applied to the operation driver of the electric seat, such as a tact switch that provides a quiet operating environment, but the operation is guaranteed for a long time when a low current is applied Provides a reliable operating environment.

In addition, the present invention can be applied to the drive driver of the electric seat much cheaper and quieter than the conventional operation switch can be applied to the drive driver of the electric seat is obtained an advantage that can be manufactured at low cost drive driver of the motor vehicle seat .

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

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

3 is a circuit diagram showing the configuration of a drive driver for a motor vehicle seat according to an embodiment of the present invention.

As shown in the figure, the driving driver 100 of the motor vehicle seat according to an embodiment of the present invention is a power source (V +) for supplying a direct current power source to the drive motor 140 for moving the motor vehicle seat (V +) And an operation switch 110 which is selectively operated by a user to drive the drive motor 140 in a forward and a reverse direction so as to move forward and backward of the electric seat, and operation of the operation switch 110. Forward driving circuit I configured to apply the current in the forward direction to the drive motor 140, and a reverse drive circuit configured to apply the reverse current to the drive motor 140 according to the operation of the operation switch 110. (II) and a limiter located on a line connecting the drive motor 140 and the drive circuits I and II to block the current transmitted to the drive motor 140 when the electric seat reaches the front upper limit value and the rear upper limit value. Switches consists of a (150, 250).

The operation switch 110 includes a forward movement contact 111 for instructing the electric seat to move forward, a backward movement contact 112 for instructing the electric seat to move backward, a forward movement contact 111 and a backward movement contact ( It is formed to move the connection conductor 110a so that any one of the operation stop states not connected to any of 112 is selected. The operation switch 110 may be applied to various types of switches, but it is preferable that the tact switch is low in noise and inexpensive.

In the forward driving circuit I, when the connection conductor 110a of the operation switch 110 is connected to the forward movement contact 111, the first relay 130 is in an ON switch state, thereby driving the motor 140. Apply a positive current to the. To this end, the first transistor 120 is positioned on the line of the first connection line X connecting the first excitation coil 131 from the power supply V +, as shown in FIG. 3, and from the first transistor 120. The second connection line Y is connected to the ground GND via the operation switch 110.

At this time, as the base B of the first transistor 120 is arranged to be connected to the second connection line Y, the first transistor (1) only in a state in which the operation switch 110 is connected to the forward movement contact 111. The current flows in the direction 120a crossing the 120, and the current flows simultaneously to the operation switch 110 and the first excitation coil 131.

In addition, since the electrical resistor R2 is disposed on the second connection line Y, the current value in the direction 120a passing through the first excitation coil 131 across the first transistor 120 of the first connection line X. In addition, since the current value in the direction 120b from the first transistor 120 toward the operation switch 110 becomes smaller, it is possible to apply a tact switch that allows only the low current of 30 mA or less for the operation switch 110. do. Accordingly, since the current value flowing through the first excitation coil 131 is relatively larger than the current value flowing through the operation switch 110, a high current of several hundred mA or more is applied to the first excitation coil 131, and thus the first relay ( The switching operation of 130 may be smoothly implemented. In addition, the second electric line is connected to a line connecting the base B of the first transistor 120 and the electrical resistor R2 from the upstream position 77 of the first transistor 120 of the first connection line X. By disposing the resistor R1, noise that may be generated in the base B of the first transistor 120 may be reduced to contribute to stabilization of the first transistor 120.

Similarly, in the reverse driving circuit II, when the connecting conductor 110a of the operation switch 110 is connected to the backward movement contact 112, the second relay 230 is turned on so that the driving motor ( 140, a forward current is applied. To this end, the second transistor 220 is positioned on the line of the first connection line X 'connecting the second excitation coil 231 from the power supply V + as shown in FIG. 3, and the second transistor 220 is located in the second transistor 220. The second connection line Y 'connecting to the ground GND via the operation switch 110 is arranged.

At this time, as the base B of the second transistor 220 is arranged to be connected to the second connection line Y ', the second transistor only in a state in which the operation switch 110 is connected to the backward movement contact 112. The current flows in the direction 220a crossing the 220, and the current flows simultaneously to the operation switch 110 and the second excitation coil 231.

In addition, since the electrical resistor R2 is disposed in the second connection line Y ', the electrical resistance R2 is disposed in the direction 220a passing through the second excitation coil 231 across the second transistor 220 of the first connection line X'. Since the current value in the direction 220b from the second transistor 220 toward the operation switch 110 becomes smaller than the current value, a tact switch that allows only the low current of 30 mA or less for the operation switch 110 can be applied. Will be. As a result, the current value flowing in the second excitation coil 231 is relatively larger than the current value flowing in the operation switch 110, so that a high current of several hundred mA or more is applied to the second excitation coil 231 so that the second relay ( The switching operation of 230 may be smoothly implemented. In addition, a line is connected to a line connecting the base B of the second transistor 220 and the electrical resistor R2 from the upstream position 77 'of the second transistor 220 of the first connection line X'. Since the second electrical resistor R1 is disposed, noise that may be generated in the base B of the second transistor 220 is reduced to contribute to stabilization of the first transistor 120.

The limit switch is located on the path from the power supply V + to the branch point 77 of the forward drive circuit I, and the front limit switch 150 is always kept ON when the electric seat does not reach the foremost limit value. ) And the rear limit switch 250, which is located on the path from the power supply V + to the branch point 77 'of the reverse driving circuit II and is always kept ON when the electric seat does not reach the rearmost limit value. It consists of

The front limit switch 150 is turned OFF when the electric seat physically reaches the foremost position. Accordingly, when the front limit switch 150 is turned off, even when the operation switch 110 is turned on (that is, connected to the forward movement contact 111) as shown in FIG. Since no current flows in the direction indicated by reference numeral 150d, no current flows in the first excitation coil 131, and the driving motor 140 no longer rotates to be driven.

The rear limit switch 250 is turned OFF when the electric seat physically reaches the rearmost position. Accordingly, when the rear limit switch 250 is turned off, even when the operation switch 110 is turned on (i.e., connected to the backward movement contact 112) as shown in FIG. Since no current flows in the direction indicated by reference numeral 250d, no current flows in the second excitation coil 231, so that the driving motor 140 no longer rotates.

Hereinafter, the operation principle of the driving driver 100 of the motor vehicle seat according to the embodiment of the present invention configured as described above will be described in detail with reference to FIGS. 4 and 5.

First, when the occupant connects the connecting conductor 110a of the operation switch 110 to the forward movement contact 111 as shown in Fig. 4, the current from the power supply V + passes through the front limit switch 150 and then the first. It flows in the direction indicated by reference numeral 150d along the connecting line X, and since the operation switch 110 is connected to the forward movement contact 111, it is indicated by reference numeral 120b through the base B of the first transistor 120. Direction, current flows in the direction indicated by reference numeral 120a between the collector and the emitter of the first transistor 120 and the current is applied to the first excitation coil 131.

Here, since the electrical resistor R2 disposed on the second connection line Y is disposed, the current flowing to the operation switch 110 through the second connection line Y may cause the collector and the emitter of the first transistor 120 to flow. It is possible to conduct current with a current of 30 mA or less, which is smaller than the current value in the direction indicated by the cross reference 120a.

As a relatively high current of about 200 mA is applied to the first excitation coil 131 of the first relay 130 through the first transistor 120, the switch 132 of the first relay 130 is contacted. Is turned on, and a forward driving current is applied to the drive motor 140 along the direction path indicated by reference numeral 140f from the power supply V +, whereby the operation switch 110 moves the forward movement contact 111. While being connected to and the front limit switch 150 is kept in the ON state, the drive motor 140 is driven to rotate in the forward direction to move the electric seat mechanically connected by the power transmission means such as gears, belts and the like forward.

Similar to the above, when the occupant connects the connecting conductor 110a of the operation switch 110 to the reverse movement contact 112 as shown in Fig. 5, the current from the power supply V + causes the rear limit switch 250 to turn off. Through the first connection line X 'and flows in the direction indicated by reference numeral 250d, and the operation switch 110 is connected to the backward movement contact 112, the drawing is performed through the base B of the second transistor 220. The current flows in the direction indicated by reference numeral 220b, and at the same time, a current is applied between the collector and emitter of the second transistor 120 in the direction indicated by reference numeral 220a to apply a current to the second excitation coil 231.

In this case, since the electrical resistor R2 disposed on the second connection line Y 'is disposed, the current flowing to the operation switch 110 through the second connection line Y' already exists with the collector of the second transistor 220. It becomes possible to energize with a current of 30 mA or less, which is smaller than the current value in the direction indicated by reference numeral 220a across the rotor.

Then, as a relatively high current of about 200 mA passes through the second transistor 220 to the second excitation coil 231 of the second relay 230, the switch 232 contact of the second relay 230 is applied. Is turned on to apply the reverse drive current to the drive motor 140 from the power supply V + along the directional path indicated by reference numeral 140b, whereby the operation switch 110 moves the reverse movement contact 112. While it is connected to and the rear limit switch 150 is kept in the ON state, the drive motor 140 is driven to rotate in the reverse direction to move the electrically seated electric seat mechanically connected by the power transmission means such as gears, belts.

Since the power supply V + uses a DC power supply for automobiles, various driving voltages such as 6V, 9V, 12V, 13.5V, and 16V may be applied. With respect to such a driving voltage, the current applied to the excitation coils 131 and 231 according to the value of the electrical resistor R2 is maintained at several hundred mA or more, while the current applied to the operation switch 110 is approximately 0.5 mA to 30 mA. It is possible to maintain a low current of.

As described above, as shown in FIG. 3, the power supply V + and the relays 130 and 230 are not connected in series with the excitation coils 131 and 231 from the power supply V + and the operation switch 110 in series. The transistors 120 and 220 are disposed at positions branched from the first connection lines X and X 'connecting the excitation coils 131 and 231 to the second connection lines Y and Y'. ) Is ON only when the current in the direction indicated by reference numeral 220a is applied across the transistors 120 and 220 to the excitation coils 131 and 231, and at the same time, the electrical resistor is connected to the second connection lines Y and Y '. Since the R2 is installed to control the current flowing through the second connection lines Y and Y 'to be smaller than the current flowing through the excitation coils 131 and 231, the relay 130 is switched when a high conduction current is applied. Operation switches, such as a quiet and inexpensive tact switch that allows only a low supply current while using Advantageous effects that can be used are obtained.

Accordingly, the excitation coils 131 and 231 of the relays 130 and 230 are adjusted while controlling the current applied to the operation switch 110 to a driving voltage of DC 6V to 16V, which is an automotive power supply, in a range of 0.5 mA to 30 mA. The current applied to) can be maintained at a high level of several hundred mA or more, so that the operation reliability of the relays 130 and 230 can be secured, and at the same time, a tact switch having low noise and low noise can be applied as an operation switch.

In the above, the preferred embodiments of the present invention have been described by way of example, but the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope described in the claims.

Figure 1 is a schematic diagram showing the configuration of a conventional manual moving sheet

Figure 2 is a schematic diagram showing the configuration of a drive driver of a conventional automatic electric seat

Figure 3 is a circuit diagram showing the configuration of a drive driver of the motorized electric seat according to an embodiment of the present invention

4 is a circuit diagram showing a state of implementing an operation of moving the electric seat forward by using the circuit of FIG.

FIG. 5 is a circuit diagram showing a state of implementing an operation of moving the electric seat backward using the circuit of FIG.

** Description of symbols for the main parts of the drawing **

100: electric seat drive driver 110: operation switch

111: forward movement contact 112: backward movement contact

120: first transistor 130: first relay

131: first excitation coil 140: drive motor

220: second transistor 230: second relay

231: second excitation coil V +: (+) power supply

GND: Ground B: Base

Claims (6)

In the drive driver of the automotive electric seat for moving the automotive electric seat in the front and rear directions by the rotation drive of the drive motor 140, forward and reverse, An operation switch (110) selectably operated by a user to rotationally drive the drive motor (140) in a forward and a reverse direction to move the front and rear directions of the electric seat; A power supply (V +) for supplying current to the drive motor 140; When a current larger than a predetermined value flows from the power supply to the first excitation coil 131, two contacts are connected to each other so that a first relay is connected to apply a forward current from the power supply V + to the driving motor 140. 130); When a current greater than a predetermined value flows from the power supply to the second excitation coil 231, two contacts are connected to each other so that a second relay is connected to the reverse direction from the power supply V + to the driving motor 140. 230; First connection lines (X, X ') connecting the excitation coils (131, 231) from the power supply (V +), respectively; Branch point 77 with the second connection line (Y, Y ') connecting the operation switch 110 from the first connection line (X, X') between the power supply (V +) and the exciting coil (131, 231). , 77 ') and a transistor (130, 230) for allowing current to be supplied to the excitation coil (131, 231) only when a current is applied to the operation switch (110); An electrical resistor (R2) positioned at the second connection lines (Y, Y ') connecting the transistors (130, 230) and the operation switch (110); The drive driver of the motorized seat for automobiles, characterized in that configured to include. The method of claim 1, The front limit switch 150 and the rear limit switch 250 which limit the moving range of the front and rear of the electric seat between the power supply V + and the branch points 77 and 77 'of the first connection line X. Further, the front limit switch 150 and the rear limit switch 250 is located in the ON state, when the electric seat reaches the limit of the predetermined front movement range is the front limit switch 150 And the rear limit switch 250 is turned OFF when the electric power sheet is in an OFF state and the electric seat reaches a threshold value of a predetermined rear movement range. 3. The method of claim 2, An electric motor for automobiles, further comprising a second electric resistor R1 in a line connecting the transistors 130 and 230 and the electric resistor R2 and the first connection lines X and X '. Driver of seat. 3. The method of claim 2, And said operation switch is a tact switch. The method according to any one of claims 1 to 4, The power supply (V +) is a drive driver for a motor vehicle seat, characterized in that the direct current 6V to 16V. The method of claim 5, The electric current applied to the operation switch 110 is a drive driver for a motor vehicle seat, characterized in that 0.5mA to 30mA.

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