CN209358233U - Wiring Protection Circuit, terminal plate and air-conditioning system - Google Patents
Wiring Protection Circuit, terminal plate and air-conditioning system Download PDFInfo
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- CN209358233U CN209358233U CN201920387925.4U CN201920387925U CN209358233U CN 209358233 U CN209358233 U CN 209358233U CN 201920387925 U CN201920387925 U CN 201920387925U CN 209358233 U CN209358233 U CN 209358233U
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Abstract
This application involves a kind of Wiring Protection Circuit, terminal plate and air-conditioning systems.Wiring Protection Circuit includes first input end, the second input terminal, first lead-out terminal, second output terminal, overcurrent protector and voltage-limiting protector; first input end is electrically connected with first lead-out terminal by overcurrent protector, forms first line; second input terminal is electrically connected with second output terminal by overcurrent protector, forms the second route, and voltage-limiting protector is connected between first line and the second route.When the electric current and excessive voltage that first input end and the second input terminal input; overcurrent protection and voltage-limiting protection can be carried out by overcurrent protector and voltage-limiting protector; it prevents big voltage from burning out first lead-out terminal with high current and is powered device with what second output terminal connected; it can avoid electrical safety accident, it is safe to use.
Description
Technical field
This application involves technical field of electronic equipment, more particularly to a kind of Wiring Protection Circuit, terminal plate and air-conditioning system
System.
Background technique
Terminal plate is a kind of device that line powering can be forwarded to electric appliance, is commonly used in daily life, for example, empty
Tune, television set etc. use terminal plate.However, line powering generally can be divided into forceful electric power and light current, the mistake if terminal plate is transferred will
Forceful electric power is forwarded to the light current circuit of rear electric appliance, will lead to light current circuit burnout, is easy to cause electrical safety accident, use is safe
Property is low.
Utility model content
Based on this, it is necessary to for the low problem of terminal plate safety in utilization, provide a kind of safety in utilization that can be improved
Wiring Protection Circuit, terminal plate and air-conditioning system.
A kind of Wiring Protection Circuit, including first input end, the second input terminal, first lead-out terminal, the second output
Terminal, overcurrent protector and voltage-limiting protector；
The first input end is electrically connected with the first lead-out terminal by the overcurrent protector, forms First Line
Road, second input terminal are electrically connected with second output terminal by the overcurrent protector, form the second route, institute
Voltage-limiting protector is stated to be connected between the first line and second route.
A kind of terminal plate, including printed wiring board and above-mentioned Wiring Protection Circuit, the Wiring Protection Circuit are set to institute
It states on printed wiring board.
A kind of air-conditioning system, including air-conditioning equipment and above-mentioned terminal plate, the air-conditioning equipment are electrically connected with the terminal plate.
Above-mentioned Wiring Protection Circuit, terminal plate and air-conditioning system, by first input end and first lead-out terminal electricity
Overcurrent protection is set on the first line of connection and the second route of the second input terminal and second output terminal electrical connection
Device, and between first line and the second route and voltage-limiting protector is connect, in this way, working as first input end and the second input terminal
When the electric current and excessive voltage of input, overcurrent protection and voltage-limiting protection can be carried out by overcurrent protector and voltage-limiting protector, prevented
Only big voltage burns out first lead-out terminal with high current and is powered device with what second output terminal connected, can avoid electrical safety
Accident, it is safe to use.
Detailed description of the invention
Fig. 1 is the circuit structure block diagram of Wiring Protection Circuit in one embodiment；
Fig. 2 is the circuit structure block diagram of Wiring Protection Circuit in another embodiment；
Fig. 3 is a kind of resistance-temperature characteristic curve graph of PTC resistor；
Fig. 4 is the circuit diagram of Wiring Protection Circuit in another embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, a kind of Wiring Protection Circuit is provided, can be applied to terminal plate.With reference to Fig. 1, wiring is protected
Protection circuit includes that first input end 111, the second input terminal 113, overcurrent protector 130, voltage-limiting protector 150, first are defeated
Terminal 171 and second output terminal 173 out.Wherein, first input end 111 passes through overcurrent protector 130 and the first output end
171 electrical connection of son forms first line, and the second input terminal 113 passes through 173 electricity of overcurrent protector 130 and second output terminal
Connection forms the second route, and voltage-limiting protector 150 is connected between first line and the second route.
First input end 111, the second input terminal 113, first lead-out terminal 171 and second output terminal 173 are to use
In the connecting terminal being connect with external conductive.Wherein, first input end 111 and the second input terminal 113 are for connecting input
Electricity, first lead-out terminal 171 and second output terminal 173 are powered device for connecting.Specifically, if input electricity is exchange
Electricity, then a connection zero curve in first input end 111 and the second input terminal 113, another connection firewire；If input electricity
For direct current, then a connection power supply in first input end 111 and the second input terminal 113 is positive, another company
Connect power supply cathode.
Overcurrent protector 130 is the device for overcurrent protection；Voltage-limiting protector 150 is protected for electric voltage over press
Device.By the first line being electrically connected in first input end 111 with first lead-out terminal 171 and in the second input
Setting overcurrent protector 130 on the second route that terminal 113 and second output terminal 173 be electrically connected, when passing through first input end
When the current or voltage that son 111 and the second input terminal 113 input is excessive, overcurrent protector 130 can carry out overcurrent protection.Pass through
Between first line and the second route and voltage-limiting protector 150 is connect, when first input end 111 and the second input terminal 113
When the voltage of input is excessive, voltage-limiting protector 150 can carry out voltage-limiting protection.In this way, first lead-out terminal 171 He in rear can be protected
173 connection of second output terminal is powered device.
Above-mentioned Wiring Protection Circuit passes through the First Line in first input end 111 and the electrical connection of first lead-out terminal 171
Overcurrent protector 130 is set on road and the second input terminal 113 and the second route of 173 electrical connection of second output terminal, and
Between first line and the second route and voltage-limiting protector 150 is connect, in this way, working as first input end 111 and the second input terminal
When the electric current and excessive voltage of 113 input of son, can be carried out by overcurrent protector 130 and voltage-limiting protector 150 overcurrent protection and
Voltage-limiting protection, prevent big voltage and high current burn out first lead-out terminal 171 and second output terminal son 173 connection be powered device
Part can avoid electrical safety accident, safe to use.
In one embodiment, first input end 111, the second input terminal 113, first lead-out terminal 171 and second
Output terminal 173 is screw connecting terminal.By using screw connecting terminal, easy-to-connect.It is appreciated that in other embodiments
In, first input end 111, the second input terminal 113, first lead-out terminal 171 and second output terminal 173 can also be it
The connecting terminal of his type.
In one embodiment, with reference to Fig. 2, overcurrent protector 130 includes the first over-current protecting unit 131 and the second overcurrent
Protection location 133, the first over-current protecting unit 131 are serially connected with first line, and the second over-current protecting unit 133 is serially connected with the second line
Road.That is, first input end 111 is electrically connected first lead-out terminal 171, the second input terminal by the first over-current protecting unit 131
Son 113 is electrically connected second output terminal 173 by the second over-current protecting unit 133.
When the electric current for flowing through first line is excessive, the first over-current protecting unit 131 carries out overcurrent protection；When flowing through second
When the electric current of route is excessive, the second over-current protecting unit 133 carries out overcurrent protection.In this way, can be respectively to first line and second
Route carries out independent overcurrent protection, and overcurrent protection effect is good.
In one embodiment, the first over-current protecting unit 131 includes the first PTC (Positive Temperature
Coefficient positive temperature coefficient) resistance, the first PTC resistor is serially connected with first line；Second over-current protecting unit 133 includes
Second PTC resistor, the second PTC resistor are serially connected with the second route.
PTC resistor is that resistance value increases and increased thermistor with temperature, and the resistance-temperature characteristic curve of PTC resistor is as schemed
Shown in 3.Be serially connected with first line by using the first PTC resistor, the second PTC resistor is serially connected with the second route, work as first line
Electric current it is excessive when, temperature can increase, and the resistance value of the first PTC resistor increases with temperature and increased, thus total resistance of first line
Value increases, electric current reduces；Similarly, when the electric current of the second route is excessive, the second PTC resistor plays the role of reducing electric current, keeps away
Exempt from high current burn out rear first lead-out terminal 171 and second output terminal son 173 connection be powered device.By using first
PTC resistor and the second PTC resistor, the structure of overcurrent protection is simple, overcurrent protection is convenient.
Specifically, the quantity of the first PTC resistor and the second PTC resistor can have multiple, and multiple first PTC resistors are successively gone here and there
It connects in first line, multiple second PTC resistors are sequentially connected in series on the second route.It is more by using being used on every route
A PTC resistor, overcurrent protection effect are good.
It is appreciated that in other embodiments, the first over-current protecting unit 131 and the second over-current protecting unit 133 may be used also
Can realize the device of overcurrent protection using other, for example, the first over-current protecting unit 131 and the second over-current protecting unit 133
It can be overcurrent protection relay.
In one embodiment, the first PTC resistor and the second PTC resistor are self-recovery fuse.Self-recovery fuse tool
The dual function for having overcurrent and overheating protection, restoring automatically, it is easy-to-use without frequently replacement compared to traditional fuse.
In one embodiment, voltage-limiting protector 150 includes partial pressure device, and partial pressure device is connected to first line and second
Between route.That is, one end of partial pressure device is electrically connected first line, the other end of partial pressure device is electrically connected the second route, realizes
It is in parallel.By the way that partial pressure device to be connected in parallel between first line and the second route, when first input end 111 and the second input terminal
When the voltage of 113 input of son is excessive, partial pressure device can be carried out partial pressure protection, protect the first output end of rear 171 and the second output
173 connection of end is powered device, and structure is simply easily achieved.
Specifically, the quantity of partial pressure device can be multiple, and each partial pressure device is parallel to first line and the second line respectively
Between road.Using multiple partial pressure devices, voltage-limiting protection effect is good.
In one embodiment, voltage-limiting protector 150 further includes voltage clamp protection device, and voltage clamp protects device simultaneously
It is connected between first line and the second route.That is, one end of voltage clamp protection device is electrically connected first line, voltage clamp is protected
The other end for protecting device is electrically connected the second route, realizes in parallel.By by voltage clamp protection device be connected in parallel on first line with
Between second route, voltage clamp protects device and partial pressure device collective effect to realize that voltage-limiting protection, protecting effect are good.
Specifically, the quantity of voltage clamp protection device can be multiple, and each voltage clamp protection device is parallel to respectively
Between first line and the second route.Device is protected using multiple voltage clamps, protecting effect is good.
Partial pressure device and voltage clamp protect device can be according to need in the link position of first line and the second route point
It is arranged.Specifically, in one embodiment, one end of partial pressure device and one end of voltage clamp protection device are electrically connected to the
Between one over-current protecting unit 131 and first lead-out terminal 171, the other end of partial pressure device is electrically connected to the second overcurrent protection list
Between member 133 and the second input terminal 113, the other end of voltage clamp protection device is electrically connected to the second over-current protecting unit
Between 133 and second output terminal 173.In this way, voltage clamp protects device close to first lead-out terminal 171 and second output terminal
Son 173 is arranged, and protecting effect is good.
In one embodiment, partial pressure device is varistor.First line and the second line are parallel to using varistor
Between road, when the voltage that first input end 111 and the second input terminal 113 input is excessive, varistor can carry out voltage
Clamp protects rear circuit, and varistor, to the fast response time of instantaneous overvoltage, overvoltage protection effect is good.
In one embodiment, voltage clamp protection device is Transient Suppression Diode.Using Transient Suppression Diode,
Voltage can carry out voltage clamp when excessive, protect rear circuit.
Specifically, with reference to Fig. 4, the first over-current protecting unit 131 includes the first PTC resistor, the second over-current protecting unit 133
Including the second PTC resistor, one end of varistor is connected electrically between the first PTC resistor and first lead-out terminal 171, pressure-sensitive electricity
The other end of resistance is connected electrically between the second input terminal 113 and the second PTC resistor；Transient Suppression Diode is (i.e. in Fig. 4
TVS diode) one end be connected electrically between varistor and first lead-out terminal 171, the other end of Transient Suppression Diode
It is connected electrically between the second PTC resistor and second output terminal 173.By using the first PTC resistor, the second PTC resistor, pressure-sensitive
Resistance and Transient Suppression Diode reach partial pressure quick response function, protect rear circuit.
Electric connection mode in Wiring Protection Circuit between each device can there are many.In one embodiment, overcurrent is protected
It protects device 130 and is electrically connected first input end 111, the second input terminal 113, first lead-out terminal by welding or by copper sheet
171 and second output terminal 173.That is, overcurrent protector 130 and first input end 111, the second input terminal 113, first are defeated
The electric connection mode of terminal 171 and second output terminal 173 can be identical out, by welding electrical connection, or passes through copper
Piece electrical connection；Overcurrent protector 130 and first input end 111, the second input terminal 113, first lead-out terminal 171 and second
The electric connection mode of output terminal 173 can also be different, such as: overcurrent protector 130 passes through welding electrical connection first input end
Son 111 and the second input terminal 113, and first lead-out terminal 171 and second output terminal 173 are electrically connected by copper sheet, or
Overcurrent protector 130 is electrically connected first input end 111 and the second input terminal 113 by copper sheet, and passes through welding electrical connection
First lead-out terminal 171 and second output terminal 173.
In one embodiment, voltage-limiting protector 150 is connected to first line and second by welding or by copper sheet
Between route.For example, voltage-limiting protector 150 can be connected between first line and the second route by welding, or can be with
It is connected between first line and the second route by copper sheet.For another example, voltage-limiting protector 150 can pass through welding electrical connection the
One route is electrically connected the second route by copper sheet, or is electrically connected first line by copper sheet, by welding the second line of electrical connection
Road.It is electrically connected using welding manner, electrical connection stability is good.It is electrically connected using copper sheet, copper sheet electric conductivity is strong, electrical connection
Effect is good.
For example, overcurrent protector 130 and first input end 111, the second input terminal 113, first lead-out terminal 171 and
Second output terminal 173 by welding electrical connection, voltage-limiting protector 150 by welding be connected to first line and the second route it
Between.For example, overcurrent protector 130 and first input end 111, the second input terminal 113, first lead-out terminal 171 and second
Output terminal 173 is electrically connected by copper sheet, and voltage-limiting protector 150 is connected between first line and the second route by copper sheet.
For example, overcurrent protector 130 and first input end 111, the second input terminal 113, first lead-out terminal 171 and the second output
Terminal 173 is connected between first line and the second route by welding electrical connection, voltage-limiting protector 150 by copper sheet.For example,
Overcurrent protector 130 and first input end 111, the second input terminal 113, first lead-out terminal 171 and second output terminal
173 are electrically connected by copper sheet, and voltage-limiting protector 150 is connected between first line and the second route by welding.
It is appreciated that in other embodiments, company can also be passed through between the device being respectively electrically connected in Wiring Protection Circuit
Other electric conductors are connect to realize electrical connection.
In one embodiment, a kind of terminal plate, including printed wiring board and Wiring Protection Circuit above-mentioned are provided, is connect
Line protection circuit is set on printed wiring board.Specifically, Wiring Protection Circuit, which can be, is welded on printed wiring board.
Above-mentioned terminal plate similarly, can avoid electrical safety accident, use due to using Wiring Protection Circuit above-mentioned
It is highly-safe.
In one embodiment, the quantity of Wiring Protection Circuit is multiple.In this way, including multiple wiring on a terminal plate
Circuit is protected, a Wiring Protection Circuit can be used for connecting one and be powered electric appliance, so that terminal plate can be simultaneously
Multiple electric appliances that are powered are transferred, and ease of use is high.
In one embodiment, a kind of air-conditioning system, including air-conditioning equipment and terminal plate above-mentioned, air-conditioning equipment are provided
It is electrically connected with terminal plate.Specifically, air-conditioning equipment is electrically connected with first lead-out terminal and second output terminal.
Above-mentioned air-conditioning equipment, it is safe to use due to using terminal plate above-mentioned.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of this application, various modifications and improvements can be made, these belong to the application's
Protection scope.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (13)
1. a kind of Wiring Protection Circuit, which is characterized in that including first input end, the second input terminal, first lead-out terminal,
Second output terminal, overcurrent protector and voltage-limiting protector；
The first input end is electrically connected with the first lead-out terminal by the overcurrent protector, forms first line,
Second input terminal is electrically connected with second output terminal by the overcurrent protector, forms the second route, described
Voltage-limiting protector is connected between the first line and second route.
2. Wiring Protection Circuit according to claim 1, which is characterized in that the overcurrent protector is protected including the first overcurrent
Shield unit and the second over-current protecting unit, first over-current protecting unit are serially connected with the first line, second overcurrent
Protection location is serially connected with second route.
3. Wiring Protection Circuit according to claim 2, which is characterized in that first over-current protecting unit includes first
PTC resistor, first PTC resistor are serially connected with the first line, and second over-current protecting unit includes the 2nd PTC electricity
Resistance, second PTC resistor are serially connected with second route.
4. Wiring Protection Circuit according to claim 3, which is characterized in that first PTC resistor and the 2nd PTC
Resistance is self-recovery fuse.
5. the Wiring Protection Circuit according to any one of claim 2-4, which is characterized in that the voltage-limiting protector packet
Partial pressure device is included, the partial pressure device is connected between the first line and second route.
6. Wiring Protection Circuit according to claim 5, which is characterized in that the partial pressure device is varistor.
7. Wiring Protection Circuit according to claim 5, which is characterized in that the voltage-limiting protector further includes voltage clamp
Device is protected, the voltage clamp protection device is connected between the first line and second route.
8. Wiring Protection Circuit according to claim 7, which is characterized in that the voltage clamp protection device is transient state suppression
Diode processed.
9. Wiring Protection Circuit according to claim 7, which is characterized in that one end of the partial pressure device and the voltage
One end of clamping protection device is electrically connected between first over-current protecting unit and the first lead-out terminal, the partial pressure
The other end of device is electrically connected between second over-current protecting unit and second input terminal, and the voltage clamp is protected
The other end of shield device is electrically connected between second over-current protecting unit and second output terminal.
10. Wiring Protection Circuit according to claim 1, which is characterized in that the overcurrent protector by welding or
The first input end, second input terminal, the first lead-out terminal and described second defeated are electrically connected by copper sheet
Terminal out；
The voltage-limiting protector is connected between the first line and second route by welding or by copper sheet.
11. a kind of terminal plate, which is characterized in that including wiring described in any one of printed wiring board and claim 1-10
Circuit is protected, the Wiring Protection Circuit is set on the printed wiring board.
12. terminal plate according to claim 11, which is characterized in that the quantity of the Wiring Protection Circuit is multiple.
13. a kind of air-conditioning system, which is characterized in that described including terminal plate described in air-conditioning equipment and claim 11 or 12
Air-conditioning equipment is electrically connected with the terminal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920387925.4U CN209358233U (en) | 2019-03-25 | 2019-03-25 | Wiring Protection Circuit, terminal plate and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920387925.4U CN209358233U (en) | 2019-03-25 | 2019-03-25 | Wiring Protection Circuit, terminal plate and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358233U true CN209358233U (en) | 2019-09-06 |
Family
ID=67804531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920387925.4U Active CN209358233U (en) | 2019-03-25 | 2019-03-25 | Wiring Protection Circuit, terminal plate and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209358233U (en) |
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2019
- 2019-03-25 CN CN201920387925.4U patent/CN209358233U/en active Active
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