CN2469578Y - Power source connector with ground warning component - Google Patents

Abstract

A power source connector with a ground warning component is to transmit electric power from a power source socket to at least one power input terminal. The utility model is characterized in that a conduction route of a power source connector is suitable for the live wire terminal of an electric connection power input terminal, and the other conduction route is suitable for the grounding terminal and the ground wire terminal of the electric connection power input terminal. A ground warning device is electrically connected with another conduction route so as to endure the electric power in the output of a live wire plughole, and a warning signal is produced to warn the user.

Description

Power connector with ground connection alarming device

The utility model relates to a kind of power connector, particularly relates to a kind of power connector with ground connection alarming device.

General electrical equipment, television set no matter, refrigerator, washing machine, begin to drink machine and computer or the like, for eliminating its induced current, mostly be provided with the metal shielding board of a common earth connection connecting circuit and be incorporated on the power line, being power-line plug also is connected the 3rd grounding pin except that the live wire that connects administration of power supply and ground wire, therefore make supply socket except earth jack and firewire jack, also set up an earth jack (three receptacle electrical connectors) that cooperates ground strip (or post), and so-called " ground connection " is meant that the device that is contacted can hold numerous electric charge turnover smoothly and not influence described place current potential, just need have enough big capacitance, so with regard to general power transmission and distribution, this earth jack need be electrically connected to underground moistening place, and enlarge itself and the contact area of periphery with a for example rosette, can really realize actual " ground connection " effect.When the running of general building, for the purpose of simplifying ground connection, also can electrically connect with the metal material water pipe in building, with tap water pipeline as this big electric capacity, or with the common ground mutual conduction of all sockets of same storied building, with the casing of wired device that powers on as the big electric capacity of sharing.Like this, the charge inducing of each independent electrical equipment all can be distributed to rapidly on all electrical equipment in the loop, the ground connection demand that roughly meets indivedual electrical equipment, so when indivedual appliance plugs that use were plugged in the three-hole power socket with above-mentioned grounding function in the building, the metal shielding board that can make electrical equipment was connected to the earth jack of supply socket and realizes the effect of common ground through earth connection.

Yet, except that special circuit design industrial or financial commercial building may require to lay the reliable grounded circuit, the general user mostly is short of actual grounded circuit design, be the outward appearance of supply socket or be three holes, but the common ground jack is illusory and do not have any ground connection effect, or basic two receptacle electrical connectors that adopt no earth jack, make the attaching plug of aforesaid electrical equipment directly to peg graft, even if or insert and still can't learn the induced electricity magnetic wave that whether has elimination meaningless.

Thereby, as Fig. 1, just there is the Taiwan power connector that No. 83210757 novel patent application case disclosed 1 to occur, this power connector 1 is provided with an earth connection 12 that separates with attaching plug 11, its free end has ground connection electric installation 13, like this, and when supply socket is two jacks, can a socket power plug 11, described earth connection 12 is imagined and outside being exposed to.Certainly, also have the user and be plugged in a certain jack that another organizes two jack power supplys from being about to described independently ground connection electric installation 13.And supply socket also can be plugged in the ground connection electric installation 13 of earth connection 12 in the earth jack except socket power plug 11, to reach the purpose of ground connection when being three jacks.

Yet, aforesaid power connector 1 is for general two receptacle electrical connectors its ground connection electric installation 13 of still can't pegging graft, reach the ground connection effect, so can't eliminate or weaken the induced currents that electrical equipment generated an electromagnetic field such as described, thereby make described electrical equipment become the pollutant sources of electromagnetic interference in the environment, except the usefulness that influences electrical equipment itself, also disturb other electrical function.

In addition, because the extensive and long-range of power line is laid, though the ground wire with power line may have floating of some current potentials with respect to the on-site zero potential of each user as ground connection, directly the earth connection electrical couplings still can roughly be reached the purpose of ground connection to the ground wire of power line.Yet, the firewire jack of general two jack types and ground wire jack are much at one, when the user does not possess basic circuit general knowledge, possibly can't directly tell firewire jack or ground wire jack by outward appearance, mistake is inserted ground connection electric installation 13 firewire jack of two jack power supplys and is caused the charged even risk of short-circuits of casing.

So,, use and provide better ground connection effect with the person of being easy to use if the conductive plug that can have a power connector to make earth connection be coupled to ground wire and definite ground wire correctly is plugged in the corresponding ground wire jack and firewire jack with the live wire pin.

The purpose of this utility model provides a kind of safety ground and convenient power connector with ground connection alarming device that uses realized.

For achieving the above object, power connector with ground connection alarming device of the present utility model, in order to by a supply socket conduct power at least one power input mouth, described supply socket has a firewire jack and a ground wire jack, each described power input mouth has a live wire end points, an one ground wire end points and a ground termination points, described power connector comprise that one has the inserted terminal that two conductive base pins are suitable for being plugged in described supply socket, one is suitable for connecting the guiding access to described power input mouth, one first conducting path, one second conducting path and a ground connection alarming device; One end of described first conducting path electrically connects in the described conductive base pin of described inserted terminal, and its other end is suitable for being electrically connected to the live wire end points of described power input mouth; One end of described second conducting path electrically connects another in the described conductive base pin of described inserted terminal, and its other end is suitable for being electrically connected to the ground wire end points and the ground termination points of described power input mouth; Reach described ground connection alarming device and electrically connect described second conducting path, make when described second conducting path bears the electric power of being imported by the firewire jack of described supply socket, produce an alarm signal to remind the user.

Adopt such scheme, the utlity model has following advantage: (1) can utilize earth connection to reach the ground connection effect really: since in the utility model with the ground wire electrical couplings of earth connection and power line, so be inserted in two jack type supply sockets, electrical equipment still can conduct to ground wire with induced current through earth connection and eliminate or weaken, and then reaches the effect that reduces electromagnetic interference.(2) make things convenient for the user to use: because the utility model makes the user can utilize alarm signal to distinguish power connector peg graft correct or mistake easily by the setting of ground connection alarming device; to reach the effect that makes things convenient for the user to use; but also can utilize the protection switch circuit to make only when grafting is correct; power supply just can be exported through power connector, can effectively avoid like this causing electrical equipment to damage because of mispluging.

Below by most preferred embodiment and accompanying drawing the power connector with ground connection alarming device of the present utility model is elaborated, so that clearlyer understand the purpose of this utility model, characteristics and advantage.

Fig. 1 is the schematic diagram of power connector in the past;

Fig. 2 is the schematic diagram that a preferred embodiment of the present utility model is incorporated into a power line;

Fig. 3 is the circuit diagram of the preferred embodiment among Fig. 2;

Fig. 4 is the circuit diagram of another preferred embodiment of the present utility model.

Be power line 2 as shown in Figure 2 in conjunction with first preferred embodiment of the present utility model.The power connector 3 of present embodiment has a guiding access 31 in order to connect the power input mouth (not shown) to electrical equipment, especially the electrical equipment (referring to that promptly the power input mouth has a live wire end points, a ground wire end points and a ground termination points) that has common ground design, and an inserted terminal 32 in order to connect to supply socket (having a firewire jack and a ground wire jack) to transmit power supply to electrical equipment.Person skilled in the art person should be known in that guiding access 31 can connect to the power input mouth by multiple different technologies, and at this for illustrative purposes, only discloses the mode of pegging graft with power line and connect to the technology of power input mouth.The guiding access 31 of this power connector 3 electrically connects a power line 2, and the other end of power line 2 is provided with the female connectors 21 of three jacks, in order to be electrically connected to the power input mouth of electrical equipment.Two symmetrical firewire jack 22, ground wire jacks 23 of this female connectors 21, in order to the live wire end points that electrically connects the power input mouth respectively and ground wire end points with the feed-in appliances power source, and another is that earth jack 24 is in order to electrically connect the ground termination points of power input mouth, in order to the induced current derivation ground connection elimination that electrical equipment is produced.So, has three wires 26,27,28 in the power line 2, they are live wire 26, the ground wires 27 and earth connection 28 that electrically connect firewire jack 22, ground wire jack 23 and earth jack 24 respectively, and the other end of three wires 26,27,28 also is electrically connected to the guiding access 31 of power connector 3.In addition, the inserted terminal 32 of present embodiment protrudes out two symmetrical conductive base pins 321,322, in order to firewire jack, the ground wire jack of corresponding socket power socket.

For the electric connection of 31 of the inserted terminal 32 that makes power connector 3 and guiding access can reach the ground connection effect, please in the lump with reference to Fig. 3, power connector 3 inside of present embodiment have one first conducting path 34 in order to the conductive base pin 321 of electric connection inserted terminal 32 and the live wire 26 of guiding access 31, and one second conducting path 35 is in order to the conductive base pin 322 of electric connection inserted terminal 32 and the ground wire 27 and earth connection 28 of guiding access 31.Whereby, make earth connection 28 be electrically connected to ground wire 27, but in the case, conductive base pin 321,322 can correctly be plugged in the firewire jack and ground wire jack of supply socket respectively.Therefore, the power connector 3 of present embodiment also has the ground connection alarming device 4 that a prompting user misplugs usefulness.This ground connection alarming device 4 is to electrically connect described second conducting path 35, produces alarm signal to remind user's misuse in order to time in the firewire jack that is plugged in supply socket at the conductive base pin 322 that electrically connects second conducting path 35.

In the present embodiment, this ground connection alarming device 4 comprises a bridge rectifier 41, a pressurizer 42 and a loud speaker 43.

This bridge rectifier 41 is in order to when the electric power that bears by the firewire jack feed-in of supply socket, converts alternating current to direct current and exports pressurizer 42 to.So, an ac input end 411 of this bridge rectifier 41 be electrically connected to second conducting path 35, a direct current cathode output end 412 is the inputs 421 that are electrically connected to pressurizer 42, and another ac input end 413 and direct current cathode output end 414 ground connection.And at this for earth point is provided, as shown in Figure 2, a conducting strip 33 is set in that the outer surface of power connector 3 is exposed, and makes ac input end 413 and this conducting strip 33 of direct current cathode output end 414 electric connectors.Whereby, when this power connector 3 is pegged graft, can utilize user's hand to touch this conducting strip 33, and with human body as the ground connection conducting path, to reach the purpose of ground connection.

Pressurizer 42 utilizes its input 421 to receive through the electric current of bridge rectifier 41 rectifications and carries out the electric current that the voltage adjustment becomes certain voltage.The output 422 of this pressurizer 42 is to be electrically connected to loud speaker 43, and earth terminal 423 is to be electrically connected to conducting strip 33.Whereby, when pressurizer 42 receives the direct current of bridge rectifier 41 output, can carry out to export loud speaker 43 to after voltage stabilizing is handled, with as the required electric power of driving loud speaker 43.

One input 431 of loud speaker 43 activates after receiving the electric current that pressurizer 42 exported and sends the sound, to remind mispluging of user.In addition, another input 432 of loud speaker 43 also is electrically connected to conducting strip 33.

Therefore, the female connectors 21 of power line 2 is connecting to the power input mouth of electrical equipment, can utilize the ground connection alarming device 4 of present embodiment to determine the correct grafting of power connector 3 earlier.Help the power connector 3 correct easier quilts of effect of pegging graft to understand in order to allow ground connection alarming device 4 reach really, introduce the situation that power connector 3 is pegged graft hereinafter.And when the user gripped power connector 3 socket power sockets with hand contact conducting strip 33, following two kinds of situations may take place:

(1) power connector 3 is correctly pegged graft:

The conductive base pin 321 that electrically connects first conducting path 34 in power connector 3 is plugged in the firewire jack of supply socket, and the conductive base pin 322 that electrically connects second conducting path 35 is when being plugged in the ground wire jack of supply socket, then ground connection alarming device 4 does not receive the electric power that the firewire jack of supply socket is supplied with, do not have alarm signal produces so be not activated, therefore the user knows and oneself pegs graft correctly, and the female connectors 21 of power line 2 can be connected to the power input mouth of electrical equipment, so power supply can be through power connector 3, the live wire end points and the ground wire end points of the power input mouth of power line 2 and female connectors 21 feed-in electrical equipment, to reach the purpose of supplying with electrical apparatus electric power, simultaneously the structure of the common ground of electrical equipment such as metal shielding board can electrically be coupled to the ground wire of power line through the design of power connector 3, eliminating or to weaken the induced current of electrical equipment, and then reduce electromagnetic interference.

(2) power connector 3 misplugs:

The conductive base pin 321 that electrically connects first conducting path 34 in power connector 3 is plugged in the ground wire jack of supply socket, and the conductive base pin 322 that electrically connects second conducting path 35 is when being plugged in the firewire jack of supply socket, then live wire electric power can be through conductive base pin 322 feed-ins second conducting path 35, thereby therefore feed-in electric power and activate and send the sound and remind the user to misplug of ground connection alarming device 4, impel the user that power connector 3 is extracted the anti-correct grafting that is inserted into again.So, connecting to the power input mouth of electrical equipment, can utilize ground connection alarming device 4 to guarantee that power connector 3 is correctly pegged graft earlier, the situation of damaging of cocking off with the grafting mistake of effectively avoiding electrical equipment takes place.

In addition; pegging graft when correct in order to ensure power connector 3; first and second conducting path 34; 35 just meeting conductings; as shown in Figure 3; the power connector 3 of present embodiment comprises that also one is serially connected with first and second conducting path 34; 35 protection switch circuit 5; be when only correctly pegging graft (referring to that promptly first conducting path 34 is electrically connected to firewire jack and second conducting path 35 is electrically connected to ground wire jack) at power connector 3; make first and second conducting path 34; 35 conductings; power supply can be through two conducting paths 34; 35 are sent to guiding access 31 by inserted terminal 32 exports; otherwise; make first and second conducting path 34; 35 are open circuit; make that power supply can't be by power connector 3 outputs; so more can effectively reduce because of user misuse and cause the probability that electrical equipment damages and defence line, second road is provided; normally during start, can utilize this protection switch circuit 5 to prevent mispluging of power connector 3 at aforementioned ground connection alarming device 4.

In the present embodiment, this protection switch circuit 5 comprises that an active circuit 51 exchanges with one with relay 52.The electric power of this active circuit 51 in order to be imported by the firewire jack of supply socket by feed-in when first conducting path 34 export an activation signal to relay 52, and described relay 52 is to open with conducting two conducting paths 34,35 when receiving enable signal.This active circuit 51 comprises that a bridge rectifier 511 and that is electrically connected to first conducting path 34 electrically connects the pressurizer 512 of bridge rectifier 511 and relay 52.And this relay 52 comprises that two are connected in series the switch SW 1 of first and second conducting path 34,35, the coil L1 that SW2 and electrically connects the output 513 of pressurizer 512 respectively, and two switch SW 1, SW2 are open circuit at ordinary times, when only activating (be coil L1 bear enable signal and excitatory) at relay 52, two switch SW 1, SW2 become short circuit.Whereby, when electric power that described first conducting path 34 is exported by the feed-in live wire, part electric power can divide inflow bridge rectifier 511, this bridge rectifier 511 can carry out the current conversion that rectification will be input as interchange and become direct current to export pressurizer 512 to, and after pressurizer 512 voltage stabilizings are adjusted to the coil L1 that decides to export to as enable signal behind the voltage relay 52, coil L1 so enable signal and excitatory, and then order about two switch SW 1, SW2 short circuit, make first and second conducting path 34,35 be conducting, electric power could be through power connector 3 outputs.Whereby, 3 of this power connectors are pegged graft when correct at it, just can make the power input mouth of electrical equipment be electrically connected to supply socket, except more convenient user judges that grafting is whether correct, more can make the probability that causes electrical equipment to damage because of mispluging of power connector 3 reduce to minimum.In addition; relay 52 in order to ensure protection switch circuit 5 can continue to open; second conducting path 35 is electrically connected to conducting strip 33; like this; behind power turn-on; need not utilize human body to touch conducting strip 33 and come ground connection, and can be electrically connected to the ground wire of power line, to continue to provide the ground connection effect through second transmission path 35.

In addition, be second preferred embodiment of the present utility model as shown in Figure 4.The different formation electronic building bricks that are in ground connection warning circuit 4 ' of this embodiment with previous embodiment, this ground connection warning circuit 4 ' is a neon lamp 44, and an end of this neon lamp 44 is to be electrically connected to conducting strip 33 and the other end is to be electrically connected to second conducting path 35 through a resistance R.Whereby, when second conducting path 35 bore the electric power of being exported by firewire jack, neon lamp 44 was luminous thereupon, to remind user's misuse.

It should be noted, though ground connection warning circuit 4,4 ' is an output alarm signal when power connector 3 misplugs in the aforementioned embodiment, the position is set as being electrically connected to first conducting path 34 but also can change with output alarm signal when power connector 3 grafting are correct, inform that the user pegs graft correctly, so the ground connection warning circuit 4 of this case, 4 ' setting only need accord with the user and peg graft and export an alarm signal when correct or wrong, allow the user be enough to distinguish that grafting mistake or correct different situations get final product, should not be subject to the explanation of previous embodiment.In addition, person skilled in the art person is when knowing: power connector of the present utility model also can be made into the three single patterns of changeing two connectors, the restriction that is not subjected to aforesaid embodiment and is disclosed.

Claims (5)

1. power connector with ground connection alarming device, in order to by a supply socket conduct power at least one power input mouth, described supply socket has a firewire jack and a ground wire jack, each described power input mouth has a live wire end points, a ground wire end points and a ground termination points, it is characterized in that described power connector comprises:

One inserted terminal has two conductive base pins for being plugged in described supply socket;

One guiding access is for connecting to described power input mouth;

One first conducting path electrically connects one of described conductive base pin of described inserted terminal with the one end, and the other end is electrically connected to the live wire end points of described power input mouth;

One second conducting path, the one end electrically connects one of described conductive base pin of described inserted terminal, and the other end is electrically connected to the ground wire end points and the ground termination points of described power input mouth; And

One ground connection alarming device is electrically connected to described second conducting path, so that bear when being imported electric energy by the firewire jack of described supply socket at described second conducting path, produces an alarm signal to remind the user.

2. the power connector with ground connection alarming device as claimed in claim 1 is characterized in that:

Described power connector also comprises a conducting strip, and it is exposed to the surface of described power connector and electrically connects the end of described ground connection alarming device away from described second conducting path, and ground connection is provided when the user touches whereby.

3. the power connector with ground connection alarming device as claimed in claim 1 is characterized in that:

Described ground connection alarming device comprises:

One bridge rectifier electrically connects described second conducting path, in order to will be converted to direct current output by the alternating current of described second conducting path shunting;

One pressurizer electrically connects described bridge rectifier, in order to receive the direct current of being exported by described bridge rectifier and to adjust its voltage to become to decide to export behind the voltage; And

One buzzer electrically connects described pressurizer, for receive described pressurizer output decide voltage dc the time, activate and send the sound as described alarm signal.

4. the power connector with ground connection alarming device as claimed in claim 3 is characterized in that:

Described ground connection alarming device is a neon lamp, it electrically connects described second conducting path through a resistance, make when described second conducting path bears electric power by the output of the firewire jack of described supply socket, described neon lamp is by described driven by power and luminous with as described alarm signal.

5. the power connector with ground connection alarming device as claimed in claim 1 is characterized in that:

Described power connector also comprises a protection switch circuit; described protection switch circuit makes described first and second conducting path be in open-circuit condition; and when described first conducting path is electrically connected to the firewire jack of described supply socket; transmit an activation signal to described protection switch circuit; make described first and second conducting path switch to conducting state, the electric power that described supply socket is supplied with conducts to described guiding access by described inserted terminal.

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