KR102609980B1 - Vehicle cover opening/closing control apparatus - Google Patents

Abstract

The present invention relates to an opening and closing device for a vehicle cover that is connected to a motor that rotates forward and reverse to open and close the vehicle cover. To this end, a first converter that receives power from a power supply, converts it into a relay driving voltage and outputs it, and at one end the power supply Receives the driving voltage required to drive the motor corresponding to the power applied by the supply unit, outputs the driving voltage according to an on control signal applied from the other end, and blocks the output of the driving voltage according to an off control signal. , a switching unit that is a semiconductor contact switch, and one end receive the relay driving voltage output from the first converter, and the other end receives the driving voltage output from the switching unit and provides it to the motor, with external forward/reverse rotation control. A forward/reverse rotation relay switching unit that performs a switching operation for forward rotation of the motor according to a signal, a microcomputer that generates the forward/reverse rotation control signal and an on/off control signal, and a relay driving voltage output from the first converter. It is possible to provide a vehicle cover opening and closing device including a second converter that receives the voltage required to drive the microcomputer and converts the voltage to the microcomputer and outputs the voltage to the microcomputer.

Description

Vehicle cover opening/closing control apparatus {Vehicle cover opening/closing control apparatus}

The present invention relates to a vehicle cover opening/closing control device.

In general, a dump truck is equipped with a cover to open and close the open upper surface of the cargo box to prevent various loads loaded in the cargo box from falling on the road during operation.

The dump truck loading box cover opening and closing device mainly forms a pair of covers with an area corresponding to approximately half the size of the open upper surface of the loading box, and the rotation axis formed at one corner of the cover can be rotated on both sides of the loading box. When the drive shaft of the motor is connected to one longitudinal end (front end) of the rotating shaft and rotated forward or reverse, the cover rotates to cover the top of the loading box and enters a closed state or is placed on both sides of the loading box. It is configured to be in an open state where it overlaps and adheres closely.

If the dump truck loading box cover opening and closing device configured as above is not operated to stop the rotation of the motor drive shaft immediately after the closed or open state of the loading box is completed, overload may occur, resulting in damage or destruction of the motor and/or cover. There is a problem.

Therefore, the conventional dump truck bed cover opening and closing device is equipped with a control circuit that detects overcurrent due to overload when the cargo box is in a closed or open state and cuts off the power supply to the motor.

However, although the conventional overload blocking circuit has the effect of detecting overcurrent and blocking the overload, since the motor is driven with the same power from beginning to end, a strong force is applied locally, causing each part of the cover switch and the parts of the cover plate to be damaged. Damage or damage may occur.

Republic of Korea Registered Utility Model Publication No. 20-0177536 (registered on January 25, 2000)

The present invention provides a vehicle cover opening and closing device that can rotate a motor for opening and closing a vehicle cover forward and backward through a semiconductor contact switch.

As a technical means for achieving the above-described technical problem, the vehicle cover opening and closing device according to an embodiment of the present invention is connected to a motor rotating forward and backward to open and close the vehicle cover, and supplies power from a power supply unit. A first converter that receives the driving voltage and converts it into a relay driving voltage and outputs it, receives the driving voltage necessary to drive the motor corresponding to the power applied by the power supply at one end, and drives the motor according to an on control signal applied from the other end. Outputs a voltage, blocks the output of the driving voltage according to an off control signal, and receives the relay driving voltage output from the switching unit, which is a semiconductor contact switch, and the first converter at one end, and from the switching unit at the other end. A forward and reverse relay switching unit that receives the output driving voltage and provides it to the motor, and performs a switching operation to rotate the motor forward according to an external forward and reverse rotation control signal, and the forward and reverse rotation control signal and the on/off control signal. It may include a microcomputer that generates a voltage, and a second converter that receives the relay driving voltage output from the first converter, converts it into a voltage necessary to drive the microcomputer, and outputs it to the microcomputer.

According to an embodiment of the present invention, the switching unit may receive the on/off control signal through a gate, receive the driving voltage from a source, and output it to the forward/reverse relay switching unit through a drain terminal.

According to an embodiment of the present invention, the forward/reverse relay switching unit receives an operating voltage higher than the relay driving voltage, and is turned on (or off) according to the forward rotation (or reverse rotation) control signal to control the output of the operating voltage. A driving control element, a semiconductor diode that receives a relay driving voltage to one end, is driven on when an operating voltage output by the driving control element is applied to the other end, and is driven off when the operating voltage is not applied; It has a first coil that is turned on or off depending on whether the semiconductor diode is driven on or off, and the first coil is turned on and performs a switching operation according to the driven on or off of the semiconductor diode, so that the applied driving voltage for forward rotation of the motor A first relay switching circuit is supplied to the motor, and the first coil is turned off according to the driving off of the semiconductor diode and grounded for reverse rotation of the motor, and a first relay switching circuit is turned on based on the operating voltage of the driving control element. It has a second coil that is turned off, and performs a switching operation to ground the motor for forward rotation of the motor as the second coil is turned off as the operating voltage is applied, and the operating voltage is not applied. It may include a second relay switching circuit that turns on the second coil and supplies a driving voltage for reverse rotation of the motor.

According to the above-described embodiment of the present invention, by operating a motor for opening and closing a vehicle cover through a contact switch semiconductor method, it is possible to prevent overcurrent from flowing during the initial operation of the motor and to prevent damage to the relay switch. You can.

1 is a block diagram showing the configuration of a vehicle cover opening and closing device according to an embodiment of the present invention.
Figure 2 is a circuit diagram showing the detailed configuration of a forward/reverse relay switching unit according to an embodiment of the present invention.
3 and 4 are diagrams for explaining the operation process of the vehicle cover opening and closing device according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The detailed description below is provided to provide a comprehensive understanding of the methods, devices and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, if it is determined that a detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification. The terminology used in the detailed description is merely for describing embodiments of the present invention and should in no way be limiting. Unless explicitly stated otherwise, singular forms include plural meanings. In this description, expressions such as “comprising” or “comprising” are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, and one or more than those described. It should not be construed to exclude the existence or possibility of any other characteristic, number, step, operation, element, or part or combination thereof.

Hereinafter, a vehicle cover opening and closing device and its operating method according to an embodiment of the present invention will be described with reference to the attached drawings.

FIG. 1 is a block diagram showing the configuration of a vehicle cover opening and closing device according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing the detailed configuration of a forward/reverse relay switching unit according to an embodiment of the present invention, and FIGS. 3 and 4 is a diagram for explaining the operation process of the vehicle cover opening and closing device according to an embodiment of the present invention.

The vehicle cover opening and closing device 100 according to an embodiment of the present invention can operate the motor 120 for opening and closing the vehicle cover (not shown) through a contact switch semiconductor method. Through this, the vehicle cover opening and closing device 100 according to an embodiment of the present invention can not only prevent overcurrent from flowing during the initial operation of the motor 120, but also prevent damage to the relay switch.

To this end, as shown in Figures 1 and 2, the vehicle cover opening and closing device 100 according to an embodiment of the present invention uses a predetermined voltage (hereinafter referred to as 'input voltage') input from the power supply unit 105. A first converter 111 that converts the voltage to an operating voltage of 112), a microcomputer 113 that operates based on the operating voltage output from the second converter 112, receives voltage from the power supply unit 105 connected to one end, and receives an on or off control signal from the microcomputer 130 connected to the other end. A switching unit 114 that receives the operating voltage output from the first converter 111 to one end and a forward/reverse relay switching unit 115 that receives the voltage output according to the switching operation of the switching unit 114 from the other end. It may include etc.

As described above, in order to supply power to the motor 120, the power supply unit 105, the first converter 111, and the switching unit 114 are connected in parallel, and the first converter 111 and the second converter 112 ) and the forward/reverse relay switching unit 115 may be connected in parallel.

Through this circuit connection structure, the power supplied to the power supply unit 105, for example, the battery, is supplied to the first converter 111 and the switching unit 114, and the voltage converted by the first converter 111 is supplied to the second converter 111. It can be supplied to the converter 112 and the forward/reverse relay switching unit 115.

At this time, the voltage supplied to the switching unit 114 by the power supply unit 105 is called the driving voltage of the motor 120, and the voltage supplied to the forward/reverse relay switching unit 115 by the first converter 111 is called the relay voltage. It is called driving voltage.

The forward and reverse relay switching unit 115 may be composed of two switching devices, that is, a first relay switching circuit 115a and a second relay switching circuit 115b, for forward and reverse control of the motor 120.

The first and second relay switching circuits 115a and 115b are contact-type relay switches, and include first and second coils 116a and 116b that are driven by applying a relay driving voltage, and one end of which is applied from the switching unit 114. A driving voltage is applied, and a switching operation is performed according to the driving of the first and second coils 116a and 116b to change the position of the contact point and apply the driving voltage to the motor 120 to rotate the motor 120 forward and reverse. It may be composed of first and second contact switching elements 117a and 117b.

The first and second contact switching elements 117a and 117b are composed of a motor contact 130 connected to the motor 120 and a ground contact 132 that is grounded, and the motor supplied through the switching unit 114 ( It may be provided with first and second switching lines 117aa and 117bb to which the driving voltage of 120 is applied.

The first and second switching lines 117aa and 117bb may be moved according to the driving of the first and second coils 116a and 116b, thereby changing the position of the contact point.

Meanwhile, the first coil 116a includes a semiconductor diode 119 connected to a drive control element 118 to which a relay driving voltage is applied to one end and a constant voltage to be applied based on the forward/reverse rotation control signal of the microcomputer 113 to the other end. Can be connected in parallel. Here, the semiconductor diode 119 may be a Zeno diode, and the driving control element 118 may be a bipolar junction transistor (BJT).

Additionally, the second coil 116b may have a relay driving voltage applied to one end and a constant voltage applied to the other end from the driving control element 118 based on a forward/reverse rotation control signal from the microcomputer 113. That is, as the drive control element 118 is turned off according to the forward/reverse rotation control signal, the second coil 116 can be operated by the relay drive voltage applied from one end. Accordingly, the second coil 116b moves the second switching line 117bb of the second contact type switching element 117b in the downward direction and is applied to the motor contact point 140 to be applied to the second switching line 117bb. The driving voltage may be applied to the motor 120.

The microcomputer 113 may apply an on/off control signal for on/off control of the switching unit 114 and a forward/reverse rotation control signal for forward/reverse rotation control to the drive control element 118. That is, the microcomputer 113 can control the operating state of the motor 120 by applying an on/off control signal to the switching unit 114.

In addition, the microcomputer 113 applies a forward/reverse rotation control signal to turn on the switching unit 114 to change the driving voltage of the motor 120 to the first and second switching circuits of the first and second relay switching circuits 115a and 115b. It is supplied to the lines 117aa and 117bb, and the switching unit 114 is turned off so that the driving voltage of the motor 120 is supplied to the first and second switching lines 117aa and 117b of the first and second relay switching circuits 115a and 115b. 117bb) can be blocked.

In addition, the microcomputer 113 applies a forward/reverse rotation control signal to the drive control element 118 to control the contact positions of the first and second switching lines 117aa and 117bb through on/off control of the drive control element 118. By controlling the driving voltage applied to the motor 120, the motor 120 can be rotated forward and reverse.

Meanwhile, the switching unit 114 is turned on/off according to the on/off control signal to supply the driving voltage of the motor 120 to the first and second switching lines ( 117aa, 117bb) can be supplied or supply can be blocked. Specifically, the switching unit 114 is a MOS-FET element that receives an on/off control signal through a gate, receives the driving voltage of the motor 120 from the source, and supplies the driving voltage of the motor 120 through the drain terminal. It can be supplied to the first and second switching lines (117aa, 117bb) of the first and second contact switching elements (117a, 117b).

The operation process of the vehicle cover control device 100 having the structure described above will be described as follows.

First, the microcomputer 113 operates the switching unit 114 by generating an on control signal to change the driving voltage of the motor 120 to the first and second contact switching elements 117a and 117b. It can be supplied to the switching lines (117aa, 117bb).

For forward rotation of the motor 120, as shown in FIG. 3, the microcomputer 113 applies a drive control signal, which is a forward rotation control signal, to the drive control element 118 to turn on the drive control element 118. Accordingly, when a certain voltage (that is, a voltage higher than the relay driving voltage) is supplied to the other terminal of the semiconductor diode 119, the first coil 116a can operate according to the operation of the semiconductor diode 119. Accordingly (i.e., according to the operation of the first coil 116a), the contact portion of the first contact relay element 117a is changed, for example, the first switching line 117aa is moved upward to move the motor 120 ) is connected to the motor contact point 130 and the driving voltage supplied through the first switching line 117aa can be applied to the motor 120. At this time, the second coil 116b does not operate because the voltage applied from the driving control element 118 is not high compared to the relay driving voltage supplied to one end, and the second switching line 117bb is connected to the ground contact 132. You can. Accordingly, the motor 120 can rotate forward by receiving the driving voltage through the first switching line 117bb.

For reverse rotation of the motor 120, as shown in FIG. 4, the microcomputer 113 turns off the drive control element 118 by applying a drive control signal, which is a reverse rotation control signal, and turns off the first coil 116a. ) can be driven off. Accordingly, the contact point of the first contact relay element 117a is changed, for example, the first switching line 117aa is moved downward and connected to the contact point 130 of the ground line. The motor 120 may be grounded through the first switching line 117aa.

In this case, the second coil 116b may be driven according to the relay driving voltage. Accordingly, the contact point of the second contact relay element 117b is changed, for example, the second switching line 117bb is moved downward and connected to the motor contact point 130 connected to the motor 120, thereby forming a second contact point. The driving voltage supplied through the switching line 117aa may be applied to the motor 120. Accordingly, the motor 120 can reversely rotate by receiving the driving voltage through the second switching line 117bb.

The description of the present application described above is for illustrative purposes, and those skilled in the art will understand that the present application can be easily modified into other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as single may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present application. .

100: Vehicle cover opening and closing device
105: power supply unit
111: first converter
112: second converter
113: My computer
114: switching unit
115: forward/reverse relay switching unit
120: motor

Claims (3)

In the vehicle cover opening and closing device that is connected to a motor that rotates forward and backward to open and close the vehicle cover,
A first converter that receives power from the power supply unit, converts it into a relay driving voltage, and outputs it,
At one end, the driving voltage required to drive the motor corresponding to the power applied by the power supply is applied, the driving voltage is output according to an on control signal applied from the other end, and the driving voltage is adjusted according to an off control signal. A switching unit that blocks the output and is implemented with a MOS-FET element,
One end receives the relay driving voltage output from the first converter, and the other end receives the driving voltage output from the switching unit and provides it to the motor, to rotate the motor forward in accordance with an external forward/reverse rotation control signal. A forward/reverse relay switching unit that performs a switching operation,
A microcomputer that generates the forward/reverse rotation control signal and the on/off control signal;
It includes a second converter that receives the relay driving voltage output from the first converter, converts it into a voltage necessary to drive the microcomputer, and outputs it to the microcomputer,
The switching unit,
The on/off control signal is applied through the gate of the MOS-FET element, the driving voltage is received from the source, and output to the forward/reverse relay switching unit through the drain stage,
The forward and reverse relay switching unit,
A driving control element that receives an operating voltage higher than the relay driving voltage and turns on (or off) according to the forward rotation (or reverse rotation) control signal to control the output of the operating voltage, and is implemented with a bipolar junction transistor (BJT) and,
A semiconductor diode that receives a relay driving voltage to one end, is driven on when an operating voltage output by the drive control element is applied to the other end, and is driven off when the operating voltage is not applied;
It has a first coil that is turned on or off depending on whether the semiconductor diode is driven on or off, and the first coil is turned on and performs a switching operation according to the driven on or off of the semiconductor diode, so that the applied driving voltage for forward rotation of the motor A first relay switching circuit that supplies to the motor, and in which the first coil is turned off when the semiconductor diode is driven off and is grounded for reverse rotation of the motor;
It has a second coil that is turned on or off based on the operating voltage of the drive control element, and the second coil is turned off as the operating voltage is applied, switching to ground the motor for forward rotation of the motor. A vehicle cover opening and closing device that performs an operation and includes a second relay switching circuit that turns on the second coil to supply a driving voltage for reverse rotation of the motor when the operating voltage is not applied. delete delete

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