CN201332179Y

CN201332179Y - Power supply control device of extension cord socket

Info

Publication number: CN201332179Y
Application number: CNU2008201842505U
Authority: CN
Inventors: 赖丽纯
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-10-21
Anticipated expiration: 2018-12-29

Abstract

The utility model provides a power supply control device of an extension cord socket, which mainly comprises the extension cord socket. The utility model is characterized in that at least one power source hub can output power when the extension cord socket is electrified, a control device is used to control power supply of an accessory power source hub, the control device comprises a USB connector which projects and exposes on the surface of the extension cord socket, the USB connector can be connected with a computer case, a signal wire of the USB connector can receive computer case signals, and the computer signals can be transmitted to a comparator and a reference level to be compared after passing through a signal isolating circuit and a filter circuit. When output signals of the filter circuit are lower than the reference level, the comparator transmits the signals to an amplifying circuit to amplify the signals, a relay is driven to operate, and an alternating current power source is transmitted to all power source hubs of the extension cord socket, thereby leading the accessory power source hubs on the extension cord socket to supply power.

Description

The power supply control apparatus of extended line socket

Technical field

The utility model relates to a kind of power supply control apparatus of extended line socket, relates in particular to a kind of power supply control apparatus of extended line socket of whether powering by the supply hub on the signal controlling extended line socket of host computer output.

Background technology

The power supply control apparatus of existing extended line socket sees also U.S. Pat 6,586, (calls in the following text and quotes case as proof) shown in 849, and be primarily characterized in that: a kind of extended line socket can be used to be connected with computer, and then peripheral device is connected with described computer.When computer is unlocked or closes, the unlatching of the more described peripheral device that is connected with computer by the extended line socket that can automatically switch or close.The preferable USB connector that comprises of described extended line socket makes described socket extended line be linked to computer by described USB connector, and described computer can provide electric power to described socket extended line by described USB connector.Described socket extended line further comprises a relay (relay) element, and when connected computer was unlocked, described relay element energize was efficiently given the socket extended line; When connected computer was closed, described relay element can stop to provide energy to the socket extended line efficiently.Therefore, the user can utilize described socket extended line to confirm that when the computer that is bonded was closed, all peripheral devices that are linked to described socket extended line can automatically be closed; When connected computer was opened, all peripheral devices that are linked to described socket extended line can automatically be unlocked.

Therefore, quote case as proof mainly by the power supply of USB joint acquisition host computer, by described power control relay action, the attached power supply that makes AC power can be sent to the extended line socket is inserted in the jack; Control the pattern that the extended line socket is powered, the following shortcoming of can deriving and quote case as proof by the out-put supply of host computer:

1. because the power line of USB joint is arranged on the both sides of USB joint, if when touching the USB joint because of carelessness, promptly can cause the skew of USB joint, cause the power line loose contact, cause power supply can't be sent in the control device, make the supply hub of extended line socket can't continued power.

2. by the power supply control mode of host computer, have the problem of overload, during as if the generation overload, will cause the damage of The whole control device, and then the forfeiture control ability.

This shows that above-mentioned existing article still have many shortcomings, real non-one kindhearted design, and demand urgently being improved.

Every shortcoming that this case inventor is derived in view of above-mentioned existing extended line socket is urgently thought improve innovation, and after concentrating on studies through taking great pains to attain one's goal for many years, successfully researches and develops the power supply control apparatus of finishing extended line socket described in the utility model finally.

Summary of the invention

The purpose of this utility model promptly is to provide a kind of power supply control apparatus of extended line socket, because the holding wire of USB joint is arranged on the centre of USB joint, if when very not touching the USB joint, also can not cause the loose contact situation.

Of the present utility model time whether a purpose is to provide a kind of signal controlling extended line socket by host computer to power, and makes its overload free problem, can not cause circuit to damage the power supply control apparatus of the extended line socket of situation.

In order to reach above-mentioned purpose, the utility model provides a kind of power supply control apparatus of extended line socket, the exportable AC power of described at least one supply hub of extended line socket, whether attached supply hub powers, can be controlled the control of device, and control device includes a USB joint, signal isolation circuit, current potential analog circuit, filter circuit, comparison circuit, reference level generation circuit, amplifying circuit, relay and indicator light; Wherein, described USB joint is exposed to the extended line receptacle face, and have two power lines and two signal line D+ and D-in the described USB joint at least, described power line is connected with all circuit of control device, when the USB joint is connected with host computer, described power line can be directed to power supply to control device, but makes the control device operate as normal; Described signal isolation circuit is connected with the holding wire D+ and the D-of USB joint, in order to two signal line D+ and D-are isolated, avoids holding wire D+ and D-can't normally transmit the signal of host computer; Described current potential analog circuit provides an analog signal to host computer, host computer can be outputed signal to via the holding wire D+ of USB joint and D-carry out filtering in the filter circuit, after filtering is finished, again signal is delivered in the comparison circuit and compared with the reference level generation position calibration signal that circuit produced, when if the signal of filter circuit output is lower than the reference level signal, comparator can export signal in the amplifying circuit after the signal amplification, order about the actuating of relay, AC power be may be output in each supply hub of extended line socket, the attached supply hub on the extended line socket all can be powered.

Compared with prior art, the power supply control apparatus of extended line socket described in the utility model because the holding wire of USB joint is arranged on the centre of USB joint, if when very not touching the USB joint, can not cause the loose contact situation yet.

Description of drawings

See also the detailed description and the accompanying drawing thereof of following relevant the utility model one preferred embodiment, can further understand technology contents of the present utility model and purpose effect thereof; The accompanying drawing of relevant described embodiment is:

Fig. 1 is the schematic perspective view of the power supply control apparatus of the utility model extended line socket;

Fig. 2 is the calcspar of the power supply control apparatus of the utility model extended line socket;

Fig. 3 the utility model is the circuit diagram of the power supply control apparatus of described extended line socket;

Fig. 4 the utility model is the first enforcement schematic diagram of the power supply control apparatus of described extended line socket; And

Fig. 5 the utility model is the second enforcement schematic diagram of the power supply control apparatus of described extended line socket.

Description of reference numerals: 1-extended line socket; 11a～11c-supply hub; The 12-power lead; The 2-control device; The 21-USB joint; The 211-power line; D+ and D--holding wire; The 22-signal isolation circuit; The 23-filter circuit; The 24-comparison circuit; 25-is with reference to the accurate circuit that produces of bit; The 26-amplifying circuit; The 27-indicator light; The 28-relay; The 281-switch; 29-current potential artificial circuit; The 3-host computer; The 4-printer; The 5-scanner; The 6-USB connecting line; The 7-notebook computer.

Embodiment

See also Fig. 1 to shown in Figure 3, the schematic perspective view of the power supply control apparatus of extended line socket provided by the utility model, mainly include an extended line socket 1, described extended line socket 1 is provided with a plurality of

supply hub

11a, 11b, 11c, 11d, 11e, 11f, wherein, has directly output AC power source of supply hub 11a, a 11b at least, whether attached

supply hub

11c, 11d, 11e, 11f must power by power supply control apparatus 2 controls of the extended line socket in the extended line socket 1, and the power supply control apparatus 2 of described extended line socket comprises:

One USB joint 21, described USB joint 2 is exposed to outside the extended line socket 1, and described USB joint 2 has two power lines 211,212 and two signal line D+ and D-at least, each circuit in the power supply control apparatus 2 of described two power lines 211,212 and described extended line socket is connected, power supply is directed to the power supply control apparatus 2 of extended line socket by power line 211,212, but make each the circuit regular event in the power supply control apparatus 2 of extended line socket, and described holding wire D+ and D-are situated between mutually with a signal isolation circuit 22 and connect;

One signal isolation circuit 22, described signal isolation circuit 22 is isolated the two signal line D+ and the D-of USB joint 21, makes holding wire D+ and D-can send a signal to filter circuit 23;

One filter circuit 23, described filter circuit 23 receives the signal that is transmitted from signal isolation circuit 22, and with after the signal filtering, transmits signals in the anode of comparison circuit 24 again;

One reference level produces circuit 25, and the negative terminal that described reference level produces circuit 25 and comparison circuit 24 joins, and makes described reference level produce circuit 25 negative terminal of a reference level to comparison circuit 24 can be provided;

One comparison circuit 24, described comparison circuit 24 compares signal and the reference level that filter circuit 23 is transmitted, when the signal that is transmitted when filter circuit 23 was lower than described reference level, described comparison circuit 24 promptly can be exported a low level signal to amplifying circuit 26;

One amplifying circuit 26, described amplifying circuit 26 are sent to amplifying signal indicator light 27 and relay 28 after comparison circuit 24 output signals are amplified again;

One relay 28, switch 281 ends of described relay 28 are connected with the power lead 12 of extended line socket 1, so that AC power is intercepted, can't be sent among attached

supply hub

11c, 11d, 11e, the 11f, receive the signal of amplifying circuit 26 when relay 28 after, promptly can order about switch 281 conductings automatically, AC power can be sent among attached supply hub 11b, the 11c, cause attached

supply hub

11c, 11d, 11e, 11f to power;

One indicator light 27 after described indicator light 27 is received the signal of amplifying circuit 26, promptly can produce light source, represents attached supply hub 11b, the exportable AC power of 11c of extended line socket 1;

One current potential analog circuit 29, described current potential analog circuit 29 is connected with signal isolation circuit 22, the resistance value of described current potential analog circuit 29 is greater than the resistance value of definition host computer in the USB standard, make host computer can approve the signal that current potential analog circuit 29 is transmitted, and then output signal to the power supply control apparatus 2 of extended line socket; In addition, when USB joint 21 is not when joining with host computer, described current potential analog circuit 29 exportable high potential signals are sent to the anode of comparison circuit 24 through filter circuit 23, the output signal that makes filter circuit 23 is greater than reference level, cause comparison circuit 24 to be failure to actuate, cause attached

supply hub

11c, 11d, 11e, the 11f of extended line socket 1 to power.

Please consult Fig. 4 and shown in Figure 5 simultaneously, operation chart of the present utility model, described extended line socket 1 has the supply hub 11b of direct power supply to be connected with host computer 3 or notebook computer 7, and

other supply hub

11c, 11d that does not power then plugs for computer peripheral devices such as printer 4, scanners 5; When host computer 3 starts, elder generation is connected with host computer 3 or notebook computer 7 through the USB joint 21 that USB connecting line 6 will be exposed to extended line socket 1, and provide a signal to host computer 3 or notebook computer 7 by current potential analog circuit 29, make host computer 3 or notebook computer 7 exportable signals to the holding wire D+ and D-of USB joint 21, and pass through signal isolation circuit 22 holding wire D+ and D-are isolated, holding wire D+ and D-can be transmitted signals to simultaneously carry out filtering in the filter circuit 23, transmit signals to again in the comparison circuit 24 and compare with reference level, when comparison result is that the signal of filter circuit 24 output is when being lower than reference level, then comparison circuit can be exported a low level signal to amplifying circuit 26 and amplifies, to order about indicator light 27 and relay 28 actions, cause AC power can conduct to the attached supply hub 11c of

extended line socket

1,11d, 11e, among the 11f, make printer 4, but scanner 5 regular events such as computer peripheral device such as grade.

The power supply control apparatus of extended line socket provided by the utility model with the aforementioned case of quoting as proof mutually relatively the time, has more following advantage:

1. the utility model is gathered the power supply of the signal controlling extended line socket of host computer, because the holding wire of USB joint is arranged on the centre of USB joint, if when very not touching the USB joint, the small size skew of described USB can't cause the loose contact situation.

2. whether the utility model powers by the signal controlling extended line socket of host computer, is not by power supply control, makes signal control overload free problem, can not cause the damage of circuit arrangement.

Above-listed detailed description specifies at a possible embodiments of the present utility model, but described embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model skill spirit does and implement or change, all should be contained in the claim of this case.

In sum, the utility model not only really belongs to innovation on the kenel of space, and can promote above-mentioned multinomial effect by existing article, the legal novel patent requirement that should fully meet novelty and progressive, file an application in accordance with the law, earnestly ask your office and check and approve the novel patent application case of this part, to encourage utility model.

Claims

1. the power supply control apparatus of an extended line socket, has directly output AC power source of a supply hub on the described extended line socket at least, whether attached supply hub must power by the power supply control apparatus control of described extended line socket, it is characterized in that, the power supply control apparatus of described extended line socket comprises a USB joint, a signal isolation circuit, a filter circuit, reference level generation circuit, a comparison circuit, a relay and a current potential analog circuit, wherein:

Described USB joint, it is exposed to outside the described extended line socket, and have power line and a holding wire, and by described power line power supply is directed to the power supply control apparatus of described extended line socket, make each the circuit regular event in the power supply control apparatus of described extended line socket;

Described signal isolation circuit, it is situated between mutually with the holding wire (D+, D-) of described USB joint and connects, by described signal isolation circuit described holding wire (D+, D-) is isolated, with the signal output that holding wire (D+, D-) is received;

Described filter circuit, it receives from the signal that described signal isolation circuit transmitted, and with after the signal filtering, is sent in the described comparison circuit;

Described reference level produces circuit, and it provides a reference level to described comparison circuit;

Described comparison circuit, described comparison circuit compares signal and the described reference level that described filter circuit transmitted, when signal that described filter circuit transmitted is lower than described reference level, export low level signal to an amplifying circuit and carry out signal and amplify;

Described relay, it orders about switch conduction after receiving the signal of described amplifying circuit, and AC power is sent in the described attached supply hub;

Described current potential analog circuit, it is connected with described signal isolation circuit, and the resistance value of described current potential analog circuit makes host computer or notebook computer can output signal to the holding wire (D+, D-) of USB joint greater than the resistance value of definition host computer or notebook computer in the USB standard.

2. the power supply control apparatus of extended line socket as claimed in claim 1, it is characterized in that, the signal that described filter circuit is exported and the anode of described comparison circuit join, and the described reference level generation reference level that circuit produced and the negative terminal of described comparison circuit join.

3. the power supply control apparatus of extended line socket as claimed in claim 1 is characterized in that, it also comprises an indicator light, after described indicator light is received the signal of described amplifying circuit, produces light source, the attached supply hub output AC power source of described extended line socket.

4. the power supply control apparatus of extended line socket as claimed in claim 1, it is characterized in that, described current potential analog circuit is exported a high potential signal and is sent in the described comparison circuit through described filter circuit, the output signal that makes described filter circuit causes described comparison circuit to be failure to actuate greater than described reference level.

5. the power supply control apparatus of extended line socket as claimed in claim 1 is characterized in that, the supply hub power supply brain server of the direct output AC power source of described extended line socket plugs.

6. the power supply control apparatus of extended line socket as claimed in claim 1 is characterized in that, the described extended line socket directly supply hub power supply brain peripheral equipment of output AC power source plugs.