CN102148114B - Multifunctional air switch - Google Patents
Multifunctional air switch Download PDFInfo
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- CN102148114B CN102148114B CN 201010579331 CN201010579331A CN102148114B CN 102148114 B CN102148114 B CN 102148114B CN 201010579331 CN201010579331 CN 201010579331 CN 201010579331 A CN201010579331 A CN 201010579331A CN 102148114 B CN102148114 B CN 102148114B
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- multifunctional air
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Abstract
The invention provides a multifunctional air switch. The invention is characterized in that the multifunctional air switch is provided with an automatic power failure reset circuit and an overcurrent protection circuit, wherein the automatic power failure reset circuit keeps the power failure state when a circuit is energized again after being interrupted and enters the electrifying state after being manually started or started at regular time; when a tandem load current is larger than a preset value, the overcurrent protection circuit cuts off the supply of the load current; and a power supply is connected with the automatic power failure reset circuit in series, is connected with the overcurrent protection circuit and then is connected with a load. The multifunctional air switch has the power failure protection function by arranging the automatic power failure reset circuit, protects the load during overlarge operating current by arranging the overcurrent protection circuit and effectively integrates the functions of power failure protection reset and overcurrent protection. In addition, the multifunctional air switch can be provided with an indicator lamp and a buzzer so as to display working conditions of power failure reset and overcurrent protection; and the circuits have simple structures and are convenient to use.
Description
Technical field
The present invention relates to the electrical equipment control technology, particularly a kind of Multifunctional air switch.
Background technology
In many electricity consumption occasions, when unexpected generation power outage, the former electrical equipment that is in operating state often still is in the switch connected state, if forgotten the former electrical equipment that is in operating state is disconnected, then when again sending a telegram here, electrical equipment can be in "on" position immediately automatically, if this moment on-the-spot unattended operation, the empty burning very easily appears in electrical equipment, and causes the generation of accident, at least also can waste electric energy.
And existing air switch major function provides overcurrent protection function; overcurrent protection function comprises earth leakage protective, overload protection or short-circuit protection; there is not integrated power-off protection function; the switch that also exists some to have power-off protection function in the middle of existing, but most of as the existence of simple function assembly, do not gather the function of earth leakage protective, overload protection or short-circuit protection yet; and; its complex circuit designs of existing cut-offing protecting switch, cost is high, and stability still remains to be improved.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, a kind of Multifunctional air switch is provided, the present invention has gathered that power-off protection resets and overcurrent protection function.
The objective of the invention is to be achieved through the following technical solutions: Multifunctional air switch; be provided with when sending a telegram here again after the down circuitry; keep off-position; behind start-up by hand or start by set date, enter the outage automatic reset circuit of "on" position; and when working as the load current of connecting greater than preset value; cut off the current foldback circuit of the electric current supply of load, power supply is with after the outage automatic reset circuit is connected, again by being connected with load behind the current foldback circuit of connecting.
As preferred technical scheme, described outage automatic reset circuit comprises normal open switch (KM1), and when being in "on" position, can produce magnetic so that normal open switch (KM1) is in the AC electromagnetic coil (L1) of closure state, and touch switch (SB); After described normal open switch (KM1) formed parallel branch with touch switch (SB), the one end linked to each other with the FireWire port port of power supply, and the other end is connected with the FireWire port port of current foldback circuit; And a wherein end of AC electromagnetic coil (L1) is connected to the circuit node between the FireWire port port of described parallel branch and current foldback circuit, and the other end is connected to the zero line port of power supply.
Automatically reset preferred as outage; described outage automatic reset circuit also is provided with light-emitting diode (D) and the current-limiting resistance (R1) as indicator light; the positive pole of described light-emitting diode (D) and current-limiting resistance (R1) are composed in series the FireWire port port of receiving power supply after the series arm, and the negative pole of light-emitting diode (D) is connected to the FireWire port port of current foldback circuit.When normal open switch (KM1) when being in off-state, light-emitting diode (D) forward conduction, thereby luminously play the indicator light effect, when normal open switch is closed, so that the electrical potential difference at described series arm two ends is almost 0, not conducting of light-emitting diode (D), namely not luminous yet.
Preferably, described touch switch (SB) namely flicks after being made as and pressing 1S.
As preferred technical scheme, described current foldback circuit is provided with secondary linkage switch (KM2-KM3), and when electric current is excessive, so that the heat that normally closed switch (KM3) disconnects protection coil (L2); Described secondary linkage switch (KM2-KM3) comprises normal open switch (KM2) and normally closed switch (KM3), when normally closed switch (KM3) is closed, normal open switch (KM2) just disconnects, when normally closed switch (KM3) disconnected, normal open switch (KM2) was just closed; One end of normally closed switch (KM3) is connected to the circuit node between described parallel branch and the AC electromagnetic coil (L1), behind the other end series connection heat protection coil (L2), by load access zero line; One section circuit node that is connected between described parallel branch and the normally closed switch (KM3) of described normal open switch (KM2), the other end is connected to zero line.
Preferred as overcurrent protection; described normal open switch (KM2) also is in series with a buzzer (S) and a resistance (R2); by this; when load current excessive; order about normally closed switch (KM3) with pyrogenicity protective wire circle (L2) and disconnect, the normal open switch (KM2) that then links is closed to form path, and the load outage; honey device (S) is just sounded, and realizes reporting to the police.
As preferably, described heat protection coil (L2) namely disconnects normally closed switch (KM3) when current threshold that the load current of flowing through is made by oneself greater than it.
More preferably: this air switch also is provided with piezo-resistance (VR), one end of piezo-resistance (VR) is connected to the FireWire port port of power supply and the circuit node between the described parallel branch, and the other end is connected to the zero line port of power supply and the circuit node between the AC electromagnetic coil (L1).Piezo-resistance (VR) effectively absorbs the overvoltage spike, plays the circuit protection effect.
The present invention has the following advantages and beneficial effect compared to existing technology:
Multifunctional air switch of the present invention is by arranging the outage automatic reset circuit; so that switch has possessed power-off protection function; by current foldback circuit is set so that in the excessive effect of playing the protection load of loaded work piece electric current, efficient set power-off protection reset and overcurrent protection function.And, indicator light and buzzer can be set, to show the operating state of power-off restoration, overcurrent protection, circuit structure is simple, and is easy to use.
Description of drawings
Fig. 1 is the circuit structure diagram of Multifunctional air switch of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment one
As shown in Figure 1, Multifunctional air switch of the present invention is provided with the outage automatic reset circuit, and current foldback circuit, and power supply is connected with the outage automatic reset circuit, again by being connected with load behind the series connection current foldback circuit.
Concrete, the outage automatic reset circuit comprises normal open switch (KM1), and when being in "on" position, can produce magnetic so that normal open switch (KM1) is in the AC electromagnetic coil (L1) of closure state, and touch switch (SB); After described normal open switch (KM1) formed parallel branch with touch switch (SB), the one end linked to each other with the FireWire port port of power supply, and the other end is connected with the FireWire port port of current foldback circuit; And a wherein end of AC electromagnetic coil (L1) is connected to the circuit node between the FireWire port port of described parallel branch and current foldback circuit, and the other end is connected to the zero line port of power supply.
The outage automatic reset circuit also is provided with light-emitting diode (D) and the current-limiting resistance (R1) as indicator light; the positive pole of described light-emitting diode (D) and current-limiting resistance (R1) are composed in series the FireWire port port of receiving power supply after the series arm, and the negative pole of light-emitting diode (D) is connected to the FireWire port port of current foldback circuit.When normal open switch (KM1) when being in off-state, light-emitting diode (D) forward conduction, thereby luminously play the indicator light effect, when normal open switch is closed, so that the electrical potential difference at described series arm two ends is almost 0, not conducting of light-emitting diode (D), namely not luminous yet.
Described touch switch (SB) namely flicks after being made as and pressing 1S.
Current foldback circuit is provided with secondary linkage switch (KM2-KM3), and when electric current is excessive, so that the heat that normally closed switch (KM3) disconnects protection coil (L2); Described secondary linkage switch (KM2-KM3) comprises normal open switch (KM2) and normally closed switch (KM3), when normally closed switch (KM3) is closed, normal open switch (KM2) just disconnects, when normally closed switch (KM3) disconnected, normal open switch (KM2) was just closed; One end of normally closed switch (KM3) is connected to the circuit node between described parallel branch and the AC electromagnetic coil (L1), behind the other end series connection heat protection coil (L2), by load access zero line; One section circuit node that is connected between described parallel branch and the normally closed switch (KM3) of described normal open switch (KM2), the other end are connected and are connected to zero line behind a buzzer (S) and the resistance (R2).By this, excessive when load current, order about normally closed switch (KM3) with pyrogenicity protective wire circle (L2) and disconnect, the normal open switch (KM2) that then links is closed to form path, and the load outage, honey device (S) is just sounded, and realizes reporting to the police.
And an end of piezo-resistance (VR) is connected to the FireWire port port of power supply and the circuit node between the described parallel branch, and the other end is connected to the zero line port of power supply and the circuit node between the AC electromagnetic coil (L1).
Above-described embodiment is the better execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. Multifunctional air switch, be provided with when sending a telegram here again after the down circuitry, keep off-position, behind start-up by hand or start by set date, enter the outage automatic reset circuit of "on" position, and when working as the load current of connecting greater than preset value, cut off the current foldback circuit of the electric current supply of load, power supply is after automatic reset circuit connects with outage, again by being connected with load behind the series connection current foldback circuit, it is characterized in that: described outage automatic reset circuit comprises normal open switch (KM1), and when being in "on" position, can produce magnetic so that normal open switch (KM1) is in the AC electromagnetic coil (L1) of closure state, and touch switch (SB); After described normal open switch (KM1) formed parallel branch with touch switch (SB), the one end linked to each other with the FireWire port port of power supply, and the other end is connected with the FireWire port port of current foldback circuit; And a wherein end of AC electromagnetic coil (L1) is connected to the circuit node between the FireWire port port of described parallel branch and current foldback circuit, and the other end is connected to the zero line port of power supply.
2. Multifunctional air switch according to claim 1; it is characterized in that: described outage automatic reset circuit also is provided with light-emitting diode (D) and the current-limiting resistance (R1) as indicator light; the positive pole of described light-emitting diode (D) and current-limiting resistance (R1) are composed in series the FireWire port port of receiving power supply after the series arm, and the negative pole of light-emitting diode (D) is connected to the FireWire port port of current foldback circuit.
3. Multifunctional air switch according to claim 1, it is characterized in that: described touch switch (SB) namely flicks after being made as and pressing 1S.
4. Multifunctional air switch according to claim 1 and 2, it is characterized in that: described current foldback circuit is provided with secondary linkage switch (KM2-KM3), and when electric current is excessive, so that the heat that normally closed switch (KM3) disconnects protection coil (L2); Described secondary linkage switch (KM2-KM3) comprises normal open switch (KM2) and normally closed switch (KM3), when normally closed switch (KM3) is closed, normal open switch (KM2) just disconnects, and when normally closed switch (KM3) disconnected, normal open switch (KM2) was just closed; One end of normally closed switch (KM3) is connected to the circuit node between described parallel branch and the AC electromagnetic coil (L1), behind the other end series connection heat protection coil (L2), by load access zero line; One section circuit node that is connected between described parallel branch and the normally closed switch (KM3) of described normal open switch (KM2), the other end is connected to zero line.
5. Multifunctional air switch according to claim 4, it is characterized in that: described normal open switch (KM2) also is in series with a buzzer (S) and a resistance (R2).
6. Multifunctional air switch according to claim 4 is characterized in that: described heat protection coil (L2) namely disconnects normally closed switch (KM3) when current threshold that the load current of flowing through is made by oneself greater than it.
7. Multifunctional air switch according to claim 6, it is characterized in that: described air switch also is provided with piezo-resistance (VR), one end of piezo-resistance (VR) is connected to the FireWire port port of power supply and the circuit node between the described parallel branch, and the other end is connected to the zero line port of power supply and the circuit node between the AC electromagnetic coil (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010579331 CN102148114B (en) | 2010-12-08 | 2010-12-08 | Multifunctional air switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010579331 CN102148114B (en) | 2010-12-08 | 2010-12-08 | Multifunctional air switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102148114A CN102148114A (en) | 2011-08-10 |
| CN102148114B true CN102148114B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010579331 Expired - Fee Related CN102148114B (en) | 2010-12-08 | 2010-12-08 | Multifunctional air switch |
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| Country | Link |
|---|---|
| CN (1) | CN102148114B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505609B (en) * | 2020-11-12 | 2023-08-22 | 深圳供电局有限公司 | Voltage measuring device and detection method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010084516A (en) * | 2000-02-26 | 2001-09-06 | 정해옥 | Apparatus to prevent surge current in single phase load |
| US6349022B1 (en) * | 1998-09-18 | 2002-02-19 | Tyco Electronics Corporation | Latching protection circuit |
| CN2741275Y (en) * | 2004-09-15 | 2005-11-16 | 高聪 | Driving-switch circuit |
| CN2753010Y (en) * | 2004-11-26 | 2006-01-18 | 周启华 | Power socket with overcurrent and short circuit protective device |
| CN101594048A (en) * | 2009-03-19 | 2009-12-02 | 深圳市联德合微电子有限公司 | A kind of PWM type buck converter with overcurrent protection function |
-
2010
- 2010-12-08 CN CN 201010579331 patent/CN102148114B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6349022B1 (en) * | 1998-09-18 | 2002-02-19 | Tyco Electronics Corporation | Latching protection circuit |
| KR20010084516A (en) * | 2000-02-26 | 2001-09-06 | 정해옥 | Apparatus to prevent surge current in single phase load |
| CN2741275Y (en) * | 2004-09-15 | 2005-11-16 | 高聪 | Driving-switch circuit |
| CN2753010Y (en) * | 2004-11-26 | 2006-01-18 | 周启华 | Power socket with overcurrent and short circuit protective device |
| CN101594048A (en) * | 2009-03-19 | 2009-12-02 | 深圳市联德合微电子有限公司 | A kind of PWM type buck converter with overcurrent protection function |
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| Publication number | Publication date |
|---|---|
| CN102148114A (en) | 2011-08-10 |
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Owner name: SHANDONG SIDIPU ELECTRIC CO., LTD. Free format text: FORMER OWNER: HUIZHOU CHANGXIANG STAR ELECTRONICS CO., LTD. Effective date: 20130712 |
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Free format text: CORRECT: ADDRESS; FROM: 516006 HUIZHOU, GUANGDONG PROVINCE TO: 252600 LIAOCHENG, SHANDONG PROVINCE |
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Effective date of registration: 20130712 Address after: 252600, Linqing Road, Linqing City, Shandong Province, Liaocheng Patentee after: SHANDONG SIDIPU ELECTRIC CO., LTD. Address before: 516006 207/208, A, building 54, Zhongkai Industrial Park, Huizhou, Guangdong, Taiwan Patentee before: Huizhou Changxiang Star Electronics Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131208 |