CN111200220A

CN111200220A - Delayed safety power strip

Info

Publication number: CN111200220A
Application number: CN201811382252.XA
Authority: CN
Inventors: 王庆阳
Original assignee: Xian Zhisheng Ruixin Semiconductor Technology Co Ltd
Current assignee: Xian Zhisheng Ruixin Semiconductor Technology Co Ltd
Priority date: 2018-11-20
Filing date: 2018-11-20
Publication date: 2020-05-26

Abstract

The invention relates to a delay safety socket, comprising: a first switch (1), an indicator light part (2), a socket part (3) and a fourth switch (4); wherein the indicator light part (2) and the socket part (3) are connected in parallel between the first switch (1) and the second switch (4); the indicator lamp part (2) and the socket part (3) are connected with a high potential end through the first switch (1); the indicator lamp part (2) and the socket part (3) are connected with a low potential end through the second switch (4); the receptacle section (3) comprises a plurality of receptacle modules, which are connected in parallel. According to the delay safety socket, each socket module is provided with the delay circuit, when the socket is powered on and the switch is turned on, the jacks of all the socket modules are powered on indirectly when the delay is different, the situation that the jacks on the socket are powered on simultaneously is avoided, and therefore large current caused by simultaneous electrification of a plurality of electric equipment on the socket is avoided, and the use of the socket is safer.

Description

Delayed safety power strip

Technical Field

The invention belongs to the field of intelligent home furnishing, and particularly relates to a delay safety socket.

Background

Nowadays, the use of electric appliances has become an essential part of people's life, and people use electric appliances everywhere, whether in work environment or at home. People often use the socket when using electrical apparatus to avoid the not enough of jack. The socket is a multi-position socket with wires, commonly called a patch board, a socket, a scholar electric wire lengthening assembly or an extension line socket. A strip refers to a multi-position receptacle that has a power cord and a plug and that can be moved. More than one power plug can be connected, so that the space and the circuit are saved.

At present, the intelligent power consumption is as the important component part of intelligence house, and the row of inserting that people used now in addition mostly all has power indicator and switch, its simple structure, convenient to use. People often can peg graft a plurality of consumer on inserting the row when using to insert the row, satisfies a plurality of consumer's power consumption demands simultaneously. For example, when a computer is connected and used, other peripheral devices of the computer, such as a sound box, a printer, a display, a scanner, or a desk lamp, are often connected to the socket. When the computer is not used, people need to completely turn off the switch of the power strip to cut off the power supply so as to prevent fire hazard.

However, when the switch of the existing power strip is turned on, the used jacks are electrified, the power utilization equipment can be electrified instantly when the power strip is plugged, and the instant current of the power strip is too large if the power utilization equipment plugged on the power strip is not turned off; or after power failure, the power strip is suddenly powered on, the power consumption equipment is not switched off, and instant heavy current can be caused when the power consumption equipment is powered on, so that the power strip can be damaged, and even the power consumption equipment can be burnt.

Disclosure of Invention

In order to solve the above problems in the prior art, the present invention provides a delayed safety socket. The technical problem to be solved by the invention is realized by the following technical scheme:

a delayed security patch panel, comprising: the first switch, the indicator light part, the socket part and the fourth switch; wherein,

the indicator light part and the socket part are connected in parallel between the first switch and the second switch;

the indicator lamp part and the socket part are connected with a high potential end through the first switch;

the indicator lamp part and the socket part are connected with a low potential end through the second switch;

the outlet portion includes a plurality of outlet modules connected in parallel.

In one embodiment of the invention, the jack module comprises: a transformer, a delay circuit, a relay and a jack; wherein,

the primary coil L1 of the transformer is connected between the first switch and the second switch;

the delay circuit is connected to the secondary coil L2 of the transformer;

the coil of the relay is connected with the delay circuit;

the contact set of the relay and the jack are connected in series between the first switch and the second switch.

In one embodiment of the present invention, the delay circuit includes: the circuit comprises a diode D, a resistor R1, a resistor R2, a capacitor C and a triode T; wherein,

the anode of the secondary coil L2 is connected with the cathode of the diode D;

the anode of the diode D is connected with the base electrode of the triode T;

the resistor R1, the resistor R2 and the coil of the relay are connected in series between the base and the collector of the triode T;

the cathode of the diode D is connected with the node where the resistor R1 and the resistor R2 are connected;

the capacitor C is connected between the base electrode and the emitting electrode of the triode T;

and a node of the capacitor C connected with the emitter of the triode T is connected with the cathode of the secondary coil L2.

In one embodiment of the invention, the transformer is model number WA3-220S05 A3.

In one embodiment of the invention, the relay is of the type QYT 90-005-HSF.

In one embodiment of the present invention, the diode D has a model number of 1N 4148.

In an embodiment of the present invention, the type of the transistor T is 2N 2221.

The invention has the beneficial effects that:

according to the delay safety socket, each socket module is provided with the delay circuit, when the socket is powered on and the switch is turned on, the jacks of all the socket modules are powered on indirectly when the delay is different, the situation that the jacks on the socket are powered on simultaneously is avoided, and therefore large current caused by simultaneous electrification of a plurality of electric equipment on the socket is avoided, and the use of the socket is safer.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic diagram of a delayed safety patch panel according to the present invention;

FIG. 2 is a schematic diagram of a delay circuit structure of a delay safety socket according to the present invention;

fig. 3 is an external view of a delayed security strip according to the present invention.

Description of the symbols: 1. a first switch; 2. an indicator light section; 3. a socket portion; 4. a fourth switch; 31. a transformer; 32. a delay circuit; 33. a relay; 34 jack, 1', switch; 2', an indicator light; 341', a first receptacle; 342', a second receptacle; 343', a third receptacle.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.

Example 1:

please refer to fig. 1, 2 and 3. FIG. 1 is a schematic diagram of a delayed safety patch panel according to the present invention; FIG. 2 is a schematic diagram of a delay circuit structure of a delay safety socket according to the present invention; fig. 3 is an external view of a delayed security strip according to the present invention. As shown in fig. 1, a delayed security strip includes: a first switch 1, an indicator light part 2, a socket part 3 and a fourth switch 4; wherein,

the indicator lamp part 2 and the socket part 3 are connected in parallel between the first switch 1 and the second switch 4;

the indicator lamp part 2 and the socket part 3 are connected with a high potential end through the first switch 1;

the indicator lamp part 2 and the socket part 3 are connected with a low potential end through the second switch 4;

the jack section 3 includes a plurality of jack modules, which are connected in parallel.

Specifically, the first switch 1 is connected with a live wire of a mains supply and the socket provided by the invention, the second switch 4 is connected with a zero wire of the mains supply and the socket provided by the invention, and the socket provided by the invention is switched on by simultaneously opening the first switch 1 and the second switch 4.

Specifically, after the first switch 1 and the second switch 4 are turned on, the socket provided by the invention starts to be electrified, and the indicator lamp part 2 is lighted after being electrified, preferably, the indicator lamp part 2 comprises a protective resistor and an LED indicator lamp. The indicator light is used for indicating whether the power strip of the invention is electrified or not to work normally.

Specifically, the delay safety socket 3 provided by the invention is used for plugging electric equipment, wherein the socket comprises a plurality of socket modules, and each socket module is used for plugging different electric equipment to supply power to the electric equipment.

Further, as shown in fig. 2, the outlet module includes: a transformer 31, a delay circuit 32, a relay 33, and a jack 34; wherein,

the primary coil L1 of the transformer 31 is connected between the first switch 1 and the second switch 4;

the delay circuit 32 is connected to the secondary coil L2 of the transformer 31;

the coil of the relay 33 is connected with the delay circuit 32;

the contact group of the relay 33 and the jack 34 are connected in series between the first switch 1 and the second switch 4.

Specifically, the plurality of outlet modules provided by the invention are connected in parallel, and when the power strip provided by the invention is switched on and starts to work, the plurality of outlet modules are simultaneously powered on. Preferably, the delay circuits 32 provided by the plurality of outlet modules have different delay times, and the delay times of the outlet modules are sequentially increased. The delay time of the first outlet module may be 0, that is, the first outlet module may not include the delay circuit 32, and the jack 34 may be directly connected between the first switch 1 and the second switch 4, preferably, the voltage used by the delay circuit 32 of the present invention is 5V, and the transformer 31 is used to transform the mains voltage to the voltage used by the delay circuit 32. The relay 33 is used for controlling the connection of the jack 34 through the current generated after the delay of the delay circuit 32, when the coil of the relay 33 receives the current generated after the delay of the delay circuit 32, the contact group of the relay 33 is connected with the circuit, the two ends of the jack 34 are respectively connected with the live wire and the zero wire through the first switch 1 and the second switch 4, and the power utilization equipment inserted into the jack 34 can be connected with the power supply to start power utilization.

Specifically, the transformer 31 is used to convert 220V ac power provided by the mains power supply into 5V dc power for the delay circuit 32.

Specifically, the delay circuit 32 is used for supplying a 5V dc power supply to the relay 33 after a certain delay time to turn on the current. Preferably, the delay times of the plurality of delay circuits 32 are different.

Specifically, the relay 33 is used to turn on the contact set of the relay 33 by the on current supplied from the delay circuit 32, thereby turning on the jack 34 connected in series therewith. The relay 33 is a movable type relay.

Preferably, the transformer 31 is model WA3-220S05A3, has a power of 3W, and can convert 220V ac power of a connected mains voltage into 5V dc power.

Preferably, the relay 33 is of a type QYT90-005-HSF, has a power of 0.9W and a rated voltage of 5V, and can control the on-off of the contact set through the current passing through the coil.

Further, the delay circuit 32 includes: the circuit comprises a diode D, a resistor R1, a resistor R2, a capacitor C and a triode T; wherein,

the anode of the diode D is connected with the base electrode of the triode T;

the resistor R1, the resistor R2 and the coil of the relay 33 are connected in series and then are connected in series between the base and the collector of the triode T;

Further, the model of the diode D is 1N 4148.

Further, the type of the triode T is 2N 2221.

Specifically, after the delay circuit 32 is powered on, the resistor R1 in the delay circuit charges the capacitor C1, and when the voltage of the capacitor C1 reaches the base conducting voltage of the transistor T, which is about 0.7V, the transistor T is turned on, the coil of the relay 33 has current flowing through, and the contact group is turned on. Diode D1 is used to allow capacitor C1 to discharge quickly.

Specifically, the delay time of the delay circuit is calculated by the following formula:

t ═ R × C × ln [ V1-V0/V1-Vt ], wherein,

t is the delay time, V1 is the power voltage, V0 is the capacitor initial time voltage, Vt is the capacitor voltage at time t, R is the resistance of the resistor R1, and C is the capacitance of the capacitor C1. For example, when V1 is 5V, V0 is 0V, Vt is 0.7V, R1 is 100K Ω, R2 is 1K Ω, and C1 is 100 μ F, the delay time t of the delay circuit 32 is approximately 1.5S.

Specifically, in the novel delay-providing safety arrangement, the delay time of the delay circuits 32 of the socket modules is different, and the delay time can be controlled by the values of the resistor R1 and the capacitor C1, and can be actually controlled according to actual conditions.

As shown in fig. 3, fig. 3 is an external view of a delayed safety socket according to the present invention. In the figure, a switch 1 'corresponds to a first switch 1 and a second switch 2 for controlling the on/off of the power supply of the power strip, and an indicator light 2' corresponds to an indicator light part 2 for indicating the on/off of the power supply of the power strip. The first jack 341 ', the second jack 342 ', and the third jack 343 ' correspond to different jack modules, respectively, and when the power is turned on, the three jacks of the power strip are respectively turned on after different time delays, so as to prevent the transient current from being too large when the power is turned on.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A delayed security power strip, comprising: a first switch (1), an indicator light part (2), a socket part (3) and a fourth switch (4); wherein,

the indicator lamp part (2) and the socket part (3) are connected in parallel between the first switch (1) and the second switch (4);

the indicator lamp part (2) and the socket part (3) are connected with a high potential end through the first switch (1);

the indicator lamp part (2) and the socket part (3) are connected with a low potential end through the second switch (4);

the receptacle section (3) comprises a plurality of receptacle modules, which are connected in parallel.

2. The delayed security strip of claim 1, wherein said jack module comprises: a transformer (31), a delay circuit (32), a relay (33) and a jack (34); wherein,

a primary coil L1 of the transformer (31) is connected between the first switch (1) and a second switch (4);

the delay circuit (32) is connected to a secondary coil L2 of the transformer (31);

the coil of the relay (33) is connected with the delay circuit (32);

the contact group of the relay (33) and the jack (34) are connected in series between the first switch (1) and the second switch (4).

3. The delayed security strip of claim 2, wherein said delay circuit (32) comprises: the circuit comprises a diode D, a resistor R1, a resistor R2, a capacitor C and a triode T; wherein,

the anode of the diode D is connected with the base electrode of the triode T;

the resistor R1, the resistor R2 and the coil of the relay (33) are connected in series between the base and the collector of the triode T;

4. The delayed safety bank as claimed in claim 3, wherein said transformer (31) is of the type WA3-220S05A 3.

5. The delayed safety bank as claimed in claim 3, wherein the relay (33) is of the type QYT 90-005-HSF.

6. The delay safety bank of claim 3, wherein the diode D is of type 1N 4148.

7. The delayed security strip of claim 3, wherein said transistor T is of the type 2N 2221.