CN100384022C

CN100384022C - Safety plug-socket

Info

Publication number: CN100384022C
Application number: CNB2006100497081A
Authority: CN
Inventors: 尤小波
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-06
Filing date: 2006-03-06
Publication date: 2008-04-23
Anticipated expiration: 2026-03-06
Also published as: CN1815818A

Abstract

The present invention relates to a safety plug-socket. An insulated outer shell of the plug is provided with a bulge structure 4 which extends outward, and the middle of the bulge structure 4 is provided with a ground passage 5, wherein a contact spring 6 is arranged in the ground passage 5. A conducting sheet 2 is arranged in the wall of the insulated outer shell 1 and exposed out of both sides of the bottom of the bulge structure and a wire connection terminal. The middle of an insulated base 11 of the socket is provided with a ground bar 14, and a cover plate 12 is provided with an opening 16. Side baffle plates 17 which are provided with extending terminals are connected to the lower parts of both sides of the cover board 12, and concave fasteners 18 are arranged on the extending terminals between the side baffle plates 17, wherein a baffle plate 20 provided with an insulated cover is arranged between the concave parts of the concave fasteners 18, and the baffle plate 20 provided with the insulated cover is also arranged on the ground bar 14. Contact bodies are arranged in the insulated base and on both sides of the ground bar, and a passage 21, ball bearings 22 and a pressing spring 23 are arranged in each contact body. The present invention has the advantages of misplugging prevention, high generality and high security, and extends the service life.

Description

Safety type plug and socket assembly

One, technical field

The present invention relates to the matching used plug and socket assembly of a kind of daily life.

Two, background technology

At present, known plug construction is by formations such as two exposed (or three) metallic conduction sheets, insulation crusts; Socket is then by formations such as the cover plate that has two holes (or three holes), Metal Contact body and insulator foots.In the hole of its correspondence by the metallic conduction sheet of plug being inserted receptacle cover plate, and contact with the Metal Contact body and finish conducting process.The weak point that this type of plug and socket in use exists mainly is:

1, when plug does not also insert socket fully, the metallic conduction sheet of plug contacts with the Metal Contact body of socket and conducts electricity, but the metallic conduction sheet of plug also some exposes in socket outside, exist Danger Electric shock risk.

2, plug and socket because the moment contact produces high electric current and mechanism, make the Metal Contact body easy deformation of socket after long-term plug is used, and cause the metallic conduction sheet of plug can not effectively contact with the Metal Contact body of socket.Distance between the needs adjustment metallic conduction sheet could contact effectively and conduct electricity.

3, two slotting formula plug and sockets and three are inserted between the formula plug and sockets and are lacked interoperability and uniformity.

4, owing to the perforate reason of socket, user particularly children can be not intended to or wittingly metal bar be inserted in the contact of socket, causes taking place the electric shock phenomenon, exists serious potential safety hazard.

Three, summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, and provide a kind of can anti-mis-insertion, the safety type plug and socket assembly of highly versatile.

Purpose of the present invention realizes by following technical solution: a kind of safety type plug and socket assembly, wherein plug comprises insulation crust, conducting strip, binding post, socket comprises insulator foot, cover plate, contact, the insulation crust of described plug has outward extending raised structures, the middle part of this raised structures is provided with the ground connection passage, in the ground connection passage contact spring is housed, conducting strip is located in the wall of insulation crust and at the two bottom sides and the binding post place of this raised structures and exposes; The middle part of the insulator foot of described socket is provided with the corresponding earth rod of ground connection passage with plug, the earth rod periphery is provided with spring, cover plate is provided with the corresponding opening of insulation crust raised structures with plug, be connected with the side shield of band extension terminal under the both sides of cover plate, a spill fastener respectively is equipped with at the extension terminal place of each side shield between side shield, two couple of two spill fasteners is connected with extension spring respectively between the relative end, be provided with the baffle plate of tape insulation cover between the recess of two spill fasteners, extension spring is buckled in two spill fasteners the left and right sides of baffle plate, and the baffle plate of tape insulation cover is contained on the earth rod again, contact is contained in the insulator foot, the both sides of earth rod, be provided with passage in the contact, ball be housed in the passage and hold out against spring.

After adopting structure of the present invention, when the raised structures of the insulation crust of plug inserts in the cover plate opening of socket, the baffle plate of tape insulation cover just breaks away from from the recess of spill fastener, the earth rod of socket enters in the ground connection passage of this raised structures, and the ball in the conducting strip of the raised structures two bottom sides of this insulation crust and the contact of socket contacts and finishes conduction work.There is not metaboly in its contact; The top of the raised structures of insulation crust also is insulator; The cover plate opening is covered by the baffle plate of the tape insulation cover between the recess of spill fastener.Therefore, the present invention compared with prior art has the advantage of anti-mis-insertion, highly versatile, high safety, and has prolonged the useful life of product, has significant technological progress.

Four, description of drawings

The present invention is described in further detail below in conjunction with accompanying drawing and execution mode.

Fig. 1 is the structural representation of safety type plug and socket assembly of the present invention (contacting but insertion).

Fig. 2 is the insertion view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 2.

Fig. 4 is the C-C cutaway view of Fig. 2.

Fig. 5 is the D-D cutaway view of Fig. 1.

Fig. 6 is a structure of cover plate schematic diagram of the present invention.

Fig. 7 is the connection diagram that cover plate of the present invention and band extend the side shield of terminal.

Fig. 8 is the structural representation of the spill fastener among Fig. 1.

Fig. 9 is the A-A cutaway view of Fig. 8.

Five, embodiment

Referring to figs. 1 through Fig. 5 as can be known, safety type plug and socket assembly of the present invention, wherein plug comprises insulation crust 1, conducting strip 2, binding post 3 (can be located at insulation crust 1 inner top both sides), socket comprises insulator foot 11, cover plate 12, contact 13, the insulation crust 1 of described plug has outward extending raised structures 4, the middle part of this raised structures 4 is provided with ground connection passage 5, contact spring 6 is housed in the ground connection passage 5, and conducting strip 2 is located in the wall of insulation crust 1 and at the two bottom sides and the binding post place of this raised structures and exposes (as Fig. 1, shown in the dotted line part of Fig. 2); The middle part of the insulator foot 11 of described socket is provided with the ground connection passage 5 corresponding earth rods 14 (as earth electrode) with plug, earth rod 14 peripheries are provided with spring 15, cover plate 12 is provided with the insulation crust raised structures 4 corresponding openings 16 with plug, be connected with band under the both sides of cover plate 12 and extend the side shield 17 of terminal (as Fig. 6, shown in Figure 7), a spill fastener 18 respectively is equipped with (as Fig. 8 in the extension terminal place of each side shield between side shield 17, shown in Figure 9), two couple of two spill fasteners 18 is connected with extension spring 19 (as shown in Figure 5) respectively between the relative end, be provided with the baffle plate 20 of tape insulation cover between the recess of two spill fasteners 18, extension spring is buckled in two spill fasteners the left and right sides of baffle plate, and the baffle plate 20 of tape insulation cover is contained in again on the earth rod 14, contact 13 is contained in the insulator foot, the both sides of earth rod, be provided with passage 21 in the contact 13, ball 22 be housed in the passage 21 and hold out against spring 23 (as Fig. 3, shown in Figure 4).

Wherein the contact spring 6 in the ground connection passage 5 of plug links to each other as the earth electrode of plug with binding post 3 by electric wire, and conducting strip links to each other with the positive and negative electrode of binding post, and each binding post connects electric wire again; The insulator foot 11 of socket is provided with the power line hole, power line stretched into from the power line hole be attempted by on the contact 13, passage in this contact can respectively be provided with two, when plug is inserted in the socket fully, the conducting strip of the insulation crust raised structures two bottom sides of plug can tightly contact (contact point X as shown in Figures 3 and 4) with the ball in the contact passage is multiple, thereby the yielding electric conductivity failure phenomenon that causes of the Metal Contact body of having stopped former socket, its contact conductive effect is good, long service life.

Anti-mis-insertion principle of the present invention is: utilize extension spring two spill fasteners to be buckled on the left and right sides of baffle plate of tape insulation cover, again the baffle plate of spill fastener and tape insulation cover is placed on together the side shield place of the band extension terminal of cover plate, the arm of spill fastener can be moved on the extension terminal of side shield.The opening that is provided with on the cover plate, determined to misplug into the length of metallic conductor must meet the condition that is less than or equal to opening length, just might insert socket; And this metallic conductor will contact with the contact of socket, also must make the baffle plate of tape insulation cover sink just passable fully, the baffle plate of tape insulation cover is sunk fully and must to make the spill fastener break away from the baffle plate of tape insulation cover fully just passable, can infer thus this misplug into the length of metallic conductor must to equal the length of cover plate opening just passable.Again because the insulator foot of socket is provided with earth rod, make this misplug into the center of metallic conductor a size and the corresponding passage of earth rod must be arranged.In sum, learn meet simultaneously above-mentioned each condition misplug into the possibility of metallic conductor minimum, played the effect of anti-mis-insertion thus.

As shown in Figure 1 and Figure 2: lock to prevent that it from coming off for after being inserted in the socket fully to plug, two toothed locking push pieces 8 can be set before and after the both sides of the insulation crust 1 of described plug, under these two toothed locking push pieces, respectively be engaged with in the insulation crust locking fastener 9, locking is equipped with in the fastener and is opened spring 10, and the hook portion of locking fastener from the raised structures 4 of insulation crust (about) both sides stretch out.Be inserted in the process of socket at plug, the hook portion of locking fastener, firmly is fixed on plug in the socket to the retraction state, again to stretching out under cover plate and withstanding under the cover plate by the state that stretches out, and can plug be come off because of being collided or shaking.When needing to extract behind the plug insertion socket, then refer to link closely toothed locking push piece with two, make this locking push piece drive the locking fastener and the hook portion that locks fastener tightened under cover plate, to spin off.In order to allow the user know whether plug switches on, warning indicator light 7 (luminous tube) can be set at insulation crust 1 top of described plug, warn the positive and negative electrode of indicator light to link to each other this with the positive and negative electrode of the binding post of plug.The warning indicator light is shinny when plug is switched on; The warning indicator light does not work when the plug no power.

Claims

1. safety type plug and socket assembly, wherein plug comprises insulation crust (1), conducting strip (2), binding post (3), socket comprises insulator foot (11), cover plate (12), contact (13), it is characterized in that: the insulation crust of described plug (1) has outward extending raised structures (4), the middle part of this raised structures (4) is provided with ground connection passage (5), contact spring (6) is housed in the ground connection passage (5), and conducting strip (2) is located in the wall of insulation crust (1) and at the two bottom sides and the binding post place of this raised structures and exposes; The middle part of the insulator foot of described socket (11) is provided with the corresponding earth rod of ground connection passage (5) (14) with plug, earth rod (14) periphery is provided with spring (15), cover plate (12) is provided with the corresponding opening of insulation crust raised structures (4) (16) with plug, be connected with the side shield (17) of band extension terminal under the both sides of cover plate (12), a spill fastener (18) respectively is equipped with at the extension terminal place of each side shield between side shield (17), two couple of two spill fasteners (18) is connected with extension spring (19) respectively between the relative end, be provided with the baffle plate (20) of tape insulation cover between the recess of two spill fasteners (18), extension spring is buckled in two spill fasteners the left and right sides of baffle plate, and the baffle plate of tape insulation cover (20) is contained in again on the earth rod (14), contact (13) is contained in the insulator foot, the both sides of earth rod, be provided with passage (21) in the contact (13), ball (22) be housed in the passage (21) and hold out against spring (23); The cover plate opening is covered by the baffle plate of tape insulation cover, when the raised structures of the insulation crust of plug inserts in the cover plate opening of socket, the baffle plate of tape insulation cover just breaks away from from the recess of spill fastener, the earth rod of socket enters in the ground connection passage of this raised structures, and the ball in the conducting strip of the raised structures two bottom sides of this insulation crust and the contact of socket contacts and finishes conduction work.

2. safety type plug and socket assembly as claimed in claim 1, it is characterized in that: two toothed locking push pieces (8) are set before and after the both sides of the insulation crust (1) of described plug, under these two toothed locking push pieces, respectively be engaged with in the insulation crust locking fastener (9), be equipped with in the locking fastener and open spring (10), and the hook portion of locking fastener is stretched out from raised structures (4) both sides of insulation crust.

3. safety type plug and socket assembly as claimed in claim 1 or 2 is characterized in that: warning indicator light (7) is set at insulation crust (1) top of described plug.