KR860000598Y1 - High-load percepting circuit of direct current motor - Google Patents
High-load percepting circuit of direct current motor Download PDFInfo
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- KR860000598Y1 KR860000598Y1 KR2019840001568U KR840001568U KR860000598Y1 KR 860000598 Y1 KR860000598 Y1 KR 860000598Y1 KR 2019840001568 U KR2019840001568 U KR 2019840001568U KR 840001568 U KR840001568 U KR 840001568U KR 860000598 Y1 KR860000598 Y1 KR 860000598Y1
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- motor
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- transistor
- percepting
- load
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0811—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for dc motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Protection Of Generators And Motors (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
M : 모터 VR,R1,R2: 저항M: Motor VR, R 1 , R 2 : Resistance
Q1,Q2: 트랜지스터 N : 낸드게이트Q 1 , Q 2 : Transistor N: NAND Gate
본 고안은 직류모터를 사용하는 레코드 플레이어의 자동동작 장치나 카세트 데크 플레이어의 자동로딩 장치등의 작동중에 장애물 또는 오동작등으로 인하여 모터에 과부하가 걸리게 되면 이를 즉시 감지할 수 있는 회로로서, 과부하시에는 모터에 공급되는 직류 전원을 오프시키거나 또는 직류전원의 극성을 바꾸어 주는 제어 회로를 추가시킴으로서 과부하시 모터와 기기를 보호하도록 한 직류모터회로의 과부하 감지회로에 대한 것이다.The present invention is a circuit that can immediately detect when the motor is overloaded due to obstacles or malfunctions during the operation of the record player's automatic operation device or the cassette deck player's automatic loading device using DC motor. It is about the overload detection circuit of the DC motor circuit which protects the motor and the device in case of overload by adding a control circuit that turns off the DC power supplied to the motor or changes the polarity of the DC power.
요즘의 레코드 플레이어의 자동동작 장치 또는 카세트 데크 플레이어의 로딩(Loding) 방식중에는 프론트 로딩(Front Loding) 또는 드로잉(Drawing)방식과 같은 모터를 사용하여 자동적으로 동작되도록 한 제품이 많이 생산되고 있다. 즉 카세트 데크 플레이어를 예를 들면, 터치스위치에 의해 기기 내부에 내장되어 있던 데크가 자동적으로 밖으로 돌출되고, 사용자가 원하는 카세트로 바꾸어 끼운후에 다시 터치스위치를 눌러주게 되면 돌출됐던 데크부분이 자동적으로 기기내부로 안착되도록 제작된 것등이 있으며, 이와같은 자동로딩장치가 동작되는 도중, 즉 데크가 자동적으로 돌출되거나 또는 기기안으로 안착되는 도중에 장애물등에 의해 방해를 받을 경우 기기의 기계적인 부분의 마모나 성능의 열화가 발생됨은 물론 모터에 과부하가 걸리게 되므로서 모터 내부의 권선이 타버리거나 고장을 일으키는 폐단이 있었다.Many of the recorder's automatic operation device or cassette deck player's loading method has been manufactured to be automatically operated using a motor such as front loading or drawing method. In other words, the deck deck player, which is built into the inside of the machine by the touch switch, automatically protrudes out, and when the user switches the cassette to the desired cassette and presses the touch switch again, the protruding deck portion automatically It is designed to be settled inside, and wear or performance of the mechanical part of the device when such an automatic loading device is operated, that is, when it is interrupted by obstacles or the like while the deck automatically protrudes or rests inside the device. In addition to the deterioration of the motor as well as overloading the motor, the windings inside the motor burned out or caused a breakdown.
따라서 본 고안은 상기와 같은 문제점을 해결하기 위한 것으로, 2개의 NPN트랜지스터와 낸드게이트 및 저항만의 간단한 회로로서 모터에 과부하가 걸릴 경우 이를 즉시 감지하고 상기의 낸드게이트를 통해 일정한 신호를 출력하게 되는 것으로서, 이 출력신호를 마이크로 컴퓨터의 CPU 또는 TTL회로등의 추가회로에 공급하여 모터로 공급되는 직류전원을 오프시키거나 직류전원의 극성을 바꾸어 주어서, 기기의 자동 동작을 중지시키거나 또는 역동작을 하도록 하므로서 과부하로부터 모터와 기기를 보호할 수 있도록 안출한 것으로서 이를 첨부도면에 의거 상술하면 다음과 같다.Accordingly, the present invention is to solve the above problems, and it is a simple circuit of only two NPN transistors, NAND gate and resistor, which immediately detects when the motor is overloaded and outputs a constant signal through the NAND gate. This output signal is supplied to an additional circuit such as a microcomputer's CPU or TTL circuit to turn off the DC power supplied to the motor or change the polarity of the DC power to stop the automatic operation of the device or reverse the operation. In order to protect the motor and the device from overload, so as to be described in detail according to the accompanying drawings as follows.
직류모터회로에 있어서, 직류모터(M)의 일단은 트랜지스터(Q1)의 에미터와 트랜지스터(Q2)의 베이스에 공접시킴과 동시에 가변저항(VR)을 통해 접지하고, 트랜지스터(Q1)의 베이스 및 트랜지스터(Q1)의 에미터를 접지시키며 트랜지스터(Q1)(Q2)의 각콜렉터를 각각 저항(R1)(R2)을 통해 B+전원에 연결함과 동시에 낸드게이트(N)의 각 입력단자(I1)(I2)에 연결한 구성으로서 미설명부호중 1은 모터로 공급되는 직류전원단자 , 2는 낸드게이트(N)의 출력단자, X는 일점을 나타내는 부호이다.In the DC motor circuit, one end of the DC motor M is grounded through the variable resistor VR at the same time as the emitter of the transistor Q 1 and the base of the transistor Q 2 , and grounded through the transistor Q 1 . of base and sikimyeo ground the emitter of the transistor (Q 1) transistor (Q 1) connected to each collector of the (Q 2) to the B + power supply via a respective resistor (R 1) (R 2), and at the same time NAND gate (N Is connected to each input terminal (I 1 ) (I 2 ) of) and 1 is a DC power supply terminal supplied to the motor, 2 is an output terminal of the NAND gate N, and X is a sign indicating one point. .
상기와 같은 구성인 본 고안의 회로동작상태는 아래와 같다.The circuit operation state of the present invention having the configuration as described above is as follows.
직류모터(M)에 정격부하가 걸렸을 경우 가변저항(VR)을 통해 흐르는 전류가 i라고 하면, 가변저항(VR)의 양단간 전압, 즉 X점의 전압이 각 트랜지스터(Q1)(Q2)의 동작 전압 (약 0.5V)보다 낮도록 가변저항(VR)을 조정해 준다. 그러므로 각 트랜지스터(Q1)(Q2)는 오프되어 낸드게이트(N)의 양 입력 단자 (I1)(I2)로는 "B+" 전압이 저항(R1)(R2)을 통해 공급되므로 양쪽 다 "HIGH"레벨이 되어, 낸드게이트(N)의 출력단자(2)로는 "LOW"레벨이 출력되는 것이며, 상기 출력단자(2)에 연결된 마이크로 컴퓨터의 CPU나 TTL등의 추가 스위칭회로는 동작하지 않는다.When the rated current is applied to the DC motor M and the current flowing through the variable resistor VR is i, the voltage between the both ends of the variable resistor VR, that is, the voltage at the X point, is each transistor Q 1 (Q 2 ). Adjust the variable resistance (VR) to be lower than the operating voltage (about 0.5V). Therefore, each transistor Q 1 (Q 2 ) is turned off so that the voltage “B + ” is supplied through the resistor R 1 (R 2 ) to both input terminals I 1 (I 2 ) of the NAND gate N. Therefore, both become "HIGH" levels, and the "LOW" level is output to the output terminal 2 of the NAND gate N, and an additional switching circuit such as a CPU or a TTL of a microcomputer connected to the output terminal 2 is provided. Does not work.
만약 직류모터(M)에 과부하가 걸리게 되면 가변저항(VR)을 통해 흐르는 전류(i)가 증가하게 되고 따라서 가변저항(VR)의 양단간의 전압, 즉 X점의 전압도 증가하게 되면서 트랜지스터(Q2)의 동작전압(약 0.5V)보다 높아지면 트랜지스터(Q2)가 도통되므로 낸드게이트(N)의 입력 단자(I2)가 "LOW"레벨로 되어 상기 낸드게이트(N)의 출력단자(2)로는 "HIGH"레벨이 출력되게 되므로 상기 출력단자(2)에 연결된 마이크로 컴퓨터의 CPU나TTL회로가 동작하게 되므로서 직류모터(M)로 공급되는 전원을 오프시키거나 또는 그 전원 극성을 바꾸어 주어 전술한 로딩장치가 역동작을 하도록 하여 모터와 기기를 보호해주는 것이다.If the DC motor (M) is overloaded, the current (i) flowing through the variable resistor (VR) increases, so that the voltage between both ends of the variable resistor (VR), that is, the voltage at the X point, also increases. When the operating voltage (approximately 0.5V) of 2 is higher than the transistor Q 2 , the transistor Q 2 is turned on so that the input terminal I 2 of the NAND gate N is at a "LOW" level, so that the output terminal of the NAND gate N ( 2) the "HIGH" level is output, so that the CPU or TTL circuit of the microcomputer connected to the output terminal 2 is operated so that the power supplied to the DC motor M is turned off or the polarity of the power is changed. It is to protect the motor and the equipment by the reverse operation of the above-described loading device.
한편 전술한 로딩장치가 역동작을 하는 경우 즉 예를들어 기기 내부에 내장된 데크가 밖으로 돌출된 상태에서 다시 기기 내부로 삽입되는 경우에는 단자(1)로부터 공급되는 직류전원의 극성을 바꾸어 주므로서 직류모터(M)의 회전방향을 역으로 변환시켜 주도록 되어있으며 이 경우 X점의 전위는 부극성(-)이 된다.On the other hand, when the above-mentioned loading device is reversed, i.e., when the deck inside the device is inserted into the device again when the deck inside the device protrudes out, the polarity of the DC power supplied from the terminal 1 is changed. The direction of rotation of the DC motor (M) is reversed. In this case, the potential at the X point becomes negative (-).
따라서 상기의 역동작의 경우 직류모터(M)에 과부하가 걸리게 되면 가변저항(VR)을 통해 흐르는 전류(-i)가 증가하게 되고 따라서 가변저항(VR)의 양단간의 전압도 증가하면서 X점의 전압이 -0.5V이상이 되면 트랜지스터(Q1)가 도통되므로 낸드게이트(N)의 입력단자(I1)가 "LOW"레벨로 되어 상기 낸드게이트(N)의 출력단자(2)로는 "HIGH"레벨이 출력되게 되어, 전술한 바와 동일하게 상기 출력단자(2)에 연결된 마이크로 컴퓨터의 CPU나 TTL회로 등의 제어회로를 동작시킴으로서 모터와 기기를 보호해 주는 것이다Therefore, in the reverse operation, when the DC motor M is overloaded, the current flowing through the variable resistor VR increases (-i), and thus the voltage between both ends of the variable resistor VR increases and thus When the voltage becomes more than -0.5V, the transistor Q 1 is turned on, so the input terminal I 1 of the NAND gate N is at the "LOW" level, and the output terminal 2 of the NAND gate N is "HIGH.""The level is output, which protects the motor and the device by operating a control circuit such as a CPU or TTL circuit of the microcomputer connected to the output terminal 2 as described above.
이상과 같이 본 고안은 카세트 데크 플레이어나 레코드 플레이어의 자동동작장치에 있어서, 기기의 동작을 방해하는 장애물이나 혹은 기기의 오동작등으로 인하여 모터에 과부하가 걸리게 되면 이를 즉시 감지하여 마이크로 컴퓨터나 추가 스위칭회로를 동작시키도록 하여 과부하시 모터와 기기를 함께 보호해주도록 안출한 것으로서 직류모터회로의 안정성을 높임은 물론 제품의 고급화를 이룩한 유용한 고안인 것이다.As described above, the present invention is an automatic operation device of a cassette deck player or a record player, and immediately detects when a motor is overloaded due to an obstacle or a malfunction of the device, and immediately detects a microcomputer or an additional switching circuit. It is designed to protect the motor and the device together in the event of overload by increasing the stability of the DC motor circuit as well as the high quality of the product.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019840001568U KR860000598Y1 (en) | 1984-02-27 | 1984-02-27 | High-load percepting circuit of direct current motor |
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KR2019840001568U KR860000598Y1 (en) | 1984-02-27 | 1984-02-27 | High-load percepting circuit of direct current motor |
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KR850007210U KR850007210U (en) | 1985-10-04 |
KR860000598Y1 true KR860000598Y1 (en) | 1986-04-12 |
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KR2019840001568U KR860000598Y1 (en) | 1984-02-27 | 1984-02-27 | High-load percepting circuit of direct current motor |
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- 1984-02-27 KR KR2019840001568U patent/KR860000598Y1/en not_active IP Right Cessation
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