CN102544829B - Single phase tripolar whole sealing contact-type surface contact plug and socket - Google Patents
Single phase tripolar whole sealing contact-type surface contact plug and socket Download PDFInfo
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- CN102544829B CN102544829B CN201210026994.5A CN201210026994A CN102544829B CN 102544829 B CN102544829 B CN 102544829B CN 201210026994 A CN201210026994 A CN 201210026994A CN 102544829 B CN102544829 B CN 102544829B
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Abstract
The invention discloses a single phase tripolar whole sealing contact-type surface contact plug and a single phase tripolar whole sealing contact-type surface contact socket, which belong to general electronics and are applied to electrical equipment with the voltage being below 250 volts. A fixed sleeve (11) and a fixed sleeve upper cover (19) are arranged on the rear part of the plug, and a movable sleeve is arranged on the front part of the plug, so that the plug is in a whole sealing state; three electrodes (7), (8) and (9) of the plug are welded with refractory metal contacts; and the three electrodes with the contacts are in parallel arrangement and end-to-end alignment, and a ground electrode is placed in the middle. The socket is provided with a socket door; a shell is in a whole sealing state; three electrodes (43). (44) and (45) in the socket are jointly formed by three copper braids and three metal contacts welded under a metal plate; the three contacts are in parallel arrangement and end-to-end alignment, and a ground electrode is placed in the middle; the spacing distances of the three contacts on the socket are in consistent with those of the three contacts on the plug; the plug and the socket are connected to form contact-type surface contact, are in a whole sealing state, and are respectively still in a whole sealing state in a plug-in process and a plug-out process.
Description
Technical field
The present invention relates to general electronic corporation class single-phase tripolar plug socket, comprise plug and single-phase three extremely totally-enclosed contact-type surface contact contact bases of single-phase three extremely totally-enclosed contact-type surface contact contacts.
Background technology
In prior art, this type of plugs and sockets is disclosed by following patent documentation.
The Chinese invention patent patent No. 88200420 openly describes a kind of single-phase tripolar plug, socket, three of three-terminal polarized plus plug very flat, wherein the plane of live wire electrode and neutral line electrode is parallel to each other, distance is 12.7 ± 0.15 millimeters between the two, the plane of earth electrode is mutually vertical with above-mentioned two-stage plane, the distance of the line of centres of earth electrode center and above-mentioned two-stage is about 15 millimeters, length and width, the thickness of three poles are identical with GB single-phase tripolar plug, respective socket flat, the size of jack, spacing and plug want to kiss and.
Extensively sell a breeding oxen board plug, socket in the market, its plug of the product of this plate, socket profile and internal structure and above-mentioned patent plug, socket have a lot of similarity, but its compatibility of bull product is stronger, can use flat plug and cannon plug, the bull board plug that above-mentioned patented product and market are sold, socket have that following some is not enough: in prior art, socket has three holes to insert use for plug, and on plug, to stretch out housing outside exposed for three electrode metal sheets.This plug, socket secure are not good, after plug and female contact, its contact site forms point cantact, and a little better plug of quality, its contact site potential energy of socket form linear contact lay, cause by electric current little like this, easy heating, electric contact points short grade in useful life is not enough.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and plug, socket all has good totally-enclosed property when not connecting separately, still totally-enclosed property is had after connection, inject at plug and extract in the process of socket and be still in full closeding state separately, simultaneously again by larger current, reduce the heating of electric contact points, extend the useful life of electric contact points.
For solving the problems of the technologies described above, technical scheme of the present invention is: its highest use voltage of single-phase tripolar plug is 250 volts, one of part of each electrode is elongated metal plate, 90 degree are curved and jewel hole in one end of three electrodes, hank knotting, be connected with external cable with screw, described live wire, ground wire, the other end of zero line three elongated metal plate electrodes is welded with resistant to elevated temperatures hard contact, the shape of contact is square also can be circular, three elongated metal plates with contact are arranged in parallel, head and the tail alignment, ground wire is extremely placed in the middle, live wire electrode, neutral line electrode is in both sides, ground wire pole, full closeding state is in when plug is not connected with socket, still full closeding state is in after connection, inject at plug and extract in the process of socket and be in full closeding state all the time, after plug and socket connect, three electrode contacts and three electrode contacts in socket close and form elastic surface and contact on plug.
Three contacts are welded on one of three strip copper coins respectively, but do not align with copper coin, but slightly more backward, three strip copper coins are given prominence to a square and are used for fixing the invariant position of three copper coins in supporting plate in the side of every block plate.
Supporting plate front has three strip grooves and three strip copper coin profiles to match, three strip copper coins are fixedly mounted in the groove of supporting plate front, on supporting plate, three strip groove front portions have undercut and three strip copper coin front portions to coincide, two pieces of baffle plates are stretched out by three screw wiring points separately near terminal screw one end at supporting plate, the supporting plate back side is also provided with groove, be provided with two positioning bead anchor points to be used for determining that plug Shen enters the size of socket, the back side is also provided with spring shaft axis hole and one by axle, block the mechanism of axle upper spring, supporting plate respectively has a screw hole to be used for fixing fixed cover near both sides, terminal screw one end.
A fixed cover is provided with at supporting plate rear portion, there is outstanding elongated plates fixed cover inwall middle part along four limits, the shape surrounded and supporting plate rear portion form secure fit, respectively there is a hole fixed cover both sides, be fixed on supporting plate with two screws through holes, middle part, fixed cover front has an elongate holes, upwards has a semicircle mouth in the middle of hole, and both sides, fixed cover bottom are received inwards near supporting plate.
About fixed cover upper cover and upper end respectively has a riser inner two square column of upper cover and a protruding plate to be fenced up, and a cant board leaves a square opening, and circle or other shapes also can be made in this hole; Inner two the square column inside of upper cover are provided with cap nut, and in fixed cover upper cover, protruding plate is up-narrow and down-wide, becomes secure fit with elongate holes that fixed cover is opened, and after fixed cover upper cover and fixed cover close, spring shaft one end is pushed down by protruding plate, makes it fix.
Supporting plate front portion arranges a movable sleeving, movable sleeving is made up of parts such as movable sleeving upper plate, movable sleeving lower plate, movable sleeving back-moving spring and movable sleeving back-moving spring axles, movable sleeving lower plate has one block of slab protruded, there is axis hole period, a square is respectively protruded in middle part, lower plate both sides, movable sleeving upper plate vertical plates on both sides has strip groove and lower plate both sides protrude square and matches.
A kind of single-phase three pole sockets of the present invention, its the highest use voltage is 250 volts, screw is adopted to connect when external cable is connected with socket, described live wire, ground wire, to be three copper pigtails to have resistant to elevated temperatures hard contact and be connected and jointly form afterwards with being welded in zero line three electrodes below three metallic plates, the shape of contact is square also can be circular, three contacts are arranged in parallel, head and the tail alignment, ground wire is extremely placed in the middle, live wire electrode neutral line electrode is in both sides, ground wire pole, its spacing distance is the same with three contacts on plug, full closeding state is in when socket is not connected with plug, still full closeding state is in after connection, inject and extract socket in the process of socket at plug and be in full closeding state all the time, socket and plug to connect on rear socket three electrode contacts and three electrode contacts in plug and closes and form elastic surface and contact.
Top, contact copper coin mid portion has a cone raised up, copper coin one end is parallel to be curved 90 degree and to cold pressing with copper pigtail muon physics and be connected, the other end is also parallel curves 90 degree, wherein contact, ground wire pole than live wire electrode and neutral line electrode contact low go out a part, respective springs also grows a part, when such design is that socket and plug connects, contact, ground wire pole first contacts, and separate behind contact, ground wire pole during separation, this purpose guarantees the safety of user.
Moving contact frame is the resettlement place of three contacts, its front, be square opening below, square opening inner roof wall is provided with helical spring seat, pushing down in the rear spring seat of contact to enter in the spring other end when spring makes spring not slide, when after three closings of contact on three contacts on moving contact frame and plug because there is spring upper end, three contacts on moving contact frame, can to make on moving contact frame three contacts all around four direction adjust up and down, guarantee three pairs of contact forming surfaces contacts instead of point cantact.There is clamp block slideway this moving contact frame upper end, and moving contact frame slideway voltage supply plate when rising, decline slides.
Socket in front of the door portion has slot, and arrange a cross metallic plate in crossbeam middle lower portion, the both sides of socket door are rectangular structure; Socket door spring is made up of two middle slightly thick, that two is slightly thin brute springs, these, two springs form elasticity with socket door cross metallic plate and are connected, other end forms elasticity with the sheet metal of two on socket inner walls and is connected, these two springs play drag effect in socket door closedown situation, when after plug socket, these two springs play power-assisted effect, plug is helped to overcome the reaction force of following 5 springs, i.e. elastic force, the elastic force of coupled frame spring, the elastic force of plug movable sleeving spring of 3 springs of moving contact frame contact.
Plug thrust passes to coupled frame through socket door, coupled frame is the device transmitting plug thrust, there are two columns vertically downward both sides, coupled frame rear portion, axis hole is arranged at column top, in the middle of coupled frame, forward part has a helical spring seat to be used for connecting spring between binding post, coupled frame front end narrow part is connected with pressing plate, the action of band dynamic pressure plate.
Pressing back-end has axis hole, there is square hole axis hole front portion, coupled frame spring is allowed to pass, there is a slot square hole front portion, there is an axis hole slot front portion, wherein square hole also can be made into the shape such as circle or polygon, pressing plate is that the power passed over by coupled frame passes to moving contact frame by clamp block again, coupled frame, pressing plate are coaxial, and both are passed from socket main body by an axle, through coupled frame one end and pressing plate one end, pass from the pressing plate other end and the coupled frame other end, be fixed on socket main body axis hole, then by gear shaft plate insertion groove, block axle and prolong and move axially.
Power is passed to clamp block by pressing plate, and clamp block one flat plate has two pieces of parallel risers, has axis hole in the middle of two pieces of risers, and this axis hole is that anterior axis hole is coupled together by a thin axle with pressing plate, the thinner axle two ends passed are curved 90 degree, prevents axle from coming off.
The mode that the present invention also can adopt coupled frame to be directly connected with clamp block, coupled frame front panel extends forward, and its anterior narrow part is provided with an axis hole, and this axis hole is connected by a thin axle with clamp block axis hole, after connection, thin axle two ends is curved 90 degree.Adopt and pressing plate can be omitted in this way.
Binding post is used to connect external cable device, also be a spring base simultaneously, support coupled frame spring, extension board is forward arranged at its top, plate there is spring base, coupled frame spring when socket and plug is separated by coupled frame, pressing plate, clamp block by moving contact frame jack-up, when coupled frame dead spring after plug insertion socket be after plug is extracted by coupled frame, pressing plate, clamp block by ready for moving contact frame jack-up; Binding post front is divided two-layer, there is a rectangle entrance hole on upper strata, have a terminal screw, rectangle entrance hole, is fenced up by riser around terminal screw, there are two rectangle entrance holes in binding post lower floor, two terminal screws, centre is separated by riser, and left and right and upper strata are surrounded by riser, the back side is a plane below except spring base is arranged at top, and its base portion and socket main body slot form secure fit.
Being formed integrally above and below of socket, becomes upper cover, and there are two plates the inner both sides of upper cover, have entrance hole, two screw holes after upper cover, before socket, below and the securing part that comprises of side, two, left and right become socket main body, louvre in a row is had at upper cover and body front part, near the first laminate of bottom surface, before this plate, both sides respectively have a circular hole to be two positioning bead positions, two springs head on two positioning beads, the second laminate near bottom surface on a flat board, has two pieces perpendicular to the riser of flat board, riser is anterior short in rear portion, it is moving contact frame slideway baffle plates that socket main body protrudes two elongated plates, restriction moving contact frame can only slide up and down, the upper end that socket main body protrudes two elongated plates respectively has a slot backward, these two slots be with on cover two plates and coordinated fixed cover effect, before socket, face and upper cover can make planar shaped, also camber can be done.
A kind of single-phase three extremely totally-enclosed contact-type surface contact contact plugs of the present invention, socket and prior art plug, socket is compared has following advantage: owing to being placed in supporting plate by three electrodes on plug, and being provided with fixed cover and fixed cover upper cover at plug connector rear, front portion is provided with movable sleeving makes plug be in full closeding state; Socket is provided with socket door, shell is also in full closeding state, and contact, ground wire pole can ensure first to contact and separate afterwards, can fully ensure that user uses safely.On plug three strip copper coins welded contact and three contacts in socket connect closed after define elastic surface and contact, by big current, reduce the heating of electric contact points, the useful life of prolongation electric contact points.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is socket stereogram of the present invention.
Fig. 2 is plug stereogram of the present invention.
Fig. 3 is the stereogram that socket of the present invention removes upper cover.
Fig. 4 is the stereogram after plug of the present invention, socket connection.
Fig. 5 is the whole exploded perspective expanded view of plug of the present invention.
Fig. 6 is whole exploded perspective expanded view after socket of the present invention removes upper cover and a side.
Fig. 7 is plug supporting plate rearview.
Fig. 8 is plug supporting plate vertical view.
Fig. 9 is plug supporting plate right view.
Figure 10 is plug supporting plate front view.
Figure 11 is plug supporting plate upward view.
Figure 12 is plug fixed cover rearview.
Figure 13 is plug fixed cover vertical view.
Figure 14 is plug fixed cover right view
Figure 15 is plug fixed cover front view.
Figure 16 is plug fixed cover upward view.
Figure 17 is plug fixed cover upper cover top view.
Figure 18 is plug fixed cover upper cover right view.
Figure 19 is plug fixed cover upper cover front view.
Figure 20 is plug fixed cover upper cover left view.
Figure 21 is plug fixed cover upper cover upward view.
Figure 22 is plug movable sleeving lower plate front view.
Figure 23 is plug movable sleeving lower plate left view.
Figure 24 is plug movable sleeving lower plate upward view.
Figure 25 is plug movable sleeving upper plate front view.
Figure 26 is plug movable sleeving upper plate left view.
Figure 27 is plug movable sleeving upper plate upward view.
Figure 28 is socket coupled frame vertical view.
Figure 29 is socket coupled frame front view.
Figure 30 is socket coupled frame left view.
Figure 31 is socket coupled frame upward view.
Figure 32 is jack connector terminal rearview.
Figure 33 is that jack connector terminal is bowed and attempted.
Figure 34 is jack connector terminal front view.
Figure 35 is jack connector terminal left view.
Figure 36 is jack connector terminal upward view.
Figure 37 is that second laminate of socket main body framework near bottom surface is bowed and attempted.
Figure 38 is the second laminate right view of socket main body framework near bottom surface.
Figure 39 is the second laminate front view of socket main body framework near bottom surface.
Figure 40 is the first laminate front view of socket main body framework near bottom surface.
Figure 41 be socket moving contact frame by the front view installed after contact and spring, copper pigtail is not drawn in this figure.
Figure 42 is socket gear shaft plate front view.
Figure 43 is socket gear shaft plate left view.
Figure 44 is socket clamp block front view.
Figure 45 is socket clamp block left view.
Figure 46 is socket clamp block upward view.
Figure 47 is that socket door is bowed and attempted.
Figure 48 is socket door front view.
Figure 49 is socket door left view.
Figure 50 is socket door upward view.
Figure 51 is that socket pressing plate is bowed and attempted.
Figure 52 is socket pressing plate right view.
Figure 53 is socket pressing plate front view.
Figure 54 is socket pressing plate left view.
Figure 55 is socket pressing plate upward view.
Figure 56 is socket moving contact frame vertical view.
Figure 57 is socket moving contact frame right view.
Figure 58 is socket moving contact frame front view.
Figure 59 is socket moving contact frame upward view.
Figure 60 is socket upper cover right view.
Figure 61 is socket upper cover front view.One
Figure 62 is the coupled frame vertical view that after omitting pressing plate, coupled frame is directly connected with clamp block.
Figure 63 is the coupled frame left view that after omitting pressing plate, coupled frame is directly connected with clamp block.
Embodiment
Fig. 2 is plug stereogram of the present invention.Fig. 5 is the whole exploded perspective expanded view of plug of the present invention, and wherein 7,8,9 for being welded with three electrodes of three contacts, and each electrode has a screw, 10 is supporting plate; 11 is fixed cover; 12,13 is two screws fixed cover and supporting plate linked together, and 14 is movable sleeving spring shafts, 20 be movable sleeving spring be used for control movable sleeving move; 19 is fixed cover upper covers, and 17,18 is the screws be connected with fixed cover by fixed cover upper cover; 15 is movable sleeving lower plates, and 16 is movable sleeving upper plates.
Its optimal way of single-phase tripolar plug of the present invention is the highest use voltage is 250 volts, one of part of each electrode is elongated metal plate, 90 degree are curved and jewel hole in one end of three electrodes, hank knotting, be connected with external cable with screw, live wire, ground wire, the other end of zero line three elongated metal plate electrodes is welded with resistant to elevated temperatures hard contact, the shape of contact is square also can be circular, three elongated metal plates with contact are arranged in parallel, head and the tail alignment, ground wire is extremely placed in the middle, live wire electrode, neutral line electrode is in both sides, ground wire pole, full closeding state is in when plug is not connected with socket, still full closeding state is in after connection, inject at plug and extract in the process of socket and be in full closeding state all the time, after plug and socket connect, three electrode contacts and three electrode contacts in socket close and form elastic surface and contact on plug.
In order to achieve the above object three strip copper coins are made into shape drawn by 7,8,9 in Fig. 5, three strip copper coins are given prominence to a square and are used for fixing the invariant position of three copper coins in supporting plate in the side of every block plate, three contacts are welded on one of three strip copper coins respectively, but do not align with copper coin, but slightly more backward.
In Fig. 5,10 is supporting plate stereogram, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 is 5 views of supporting plate, in Figure 10 107, 108, 109 is three strip grooves and three strip copper coins 7 on supporting plate, 8, 9 profiles match, three strip copper coins are fixedly mounted in the groove of supporting plate front, on supporting plate, there is undercut 58 three strip groove front portions, 59, 60 and three strip copper coins front portion coincide, two pieces of baffle plates 50 are stretched out near terminal screw one end at supporting plate, 51 by three screw wiring points separately, the supporting plate back side is also provided with groove, be provided with two positioning bead anchor points 52, 53 are used for determining that plug Shen enters the size of socket, the back side is also provided with spring shaft axis hole 54 and one by axle, block the mechanism 55 of axle upper spring 20, supporting plate respectively has a screw hole 56 near both sides, terminal screw one end, 57 are used for fixing fixed cover.After supporting plate inserted by the strip copper coin three being welded with contact, three contact face are consistent with supporting plate front height, form a unified plane.
In Fig. 5,11 is fixed cover stereogram, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16 is fixed cover 5 views, a fixed cover 11 is provided with at supporting plate rear portion, there is outstanding elongated plates fixed cover inwall middle part along four limits, the shape surrounded and supporting plate rear portion form secure fit, respectively there is a hole 110 fixed cover both sides, 110a, with two screws 12, 13 are fixed on supporting plate 10 through hole, middle part, fixed cover front has an elongate holes, a semicircle mouth 61 is upwards had in the middle of hole, both sides, fixed cover bottom 101, 101a receives near supporting plate inwards, fixed cover has two circular holes 116 in middle both sides, 117 is be connected with fixed cover upper cover to use screw hole.
In Fig. 5,19 is fixed cover upper cover stereogram, Figure 17, Figure 18, Figure 19, Figure 20, Figure 21 are fixed cover upper cover 5 views, fixed cover upper cover about 19 and upper end respectively have a riser 62,63,64 to be fenced up by inner two square column of upper cover 65,66 and protruding plate 67, it is for electric wire enters use that a cant board leaves a square opening 68, and circle or other shapes also can be made in this hole; Inner two the square column inside of upper cover are provided with cap nut, can be connected with fixed cover by these two cap nuts, in fixed cover upper cover, protruding plate 67 is up-narrow and down-wide, secure fit is become with elongate holes that fixed cover is opened, after fixed cover upper cover 19 and fixed cover 11 close, spring shaft 14 one end 55 is pushed down by protruding plate 67, makes it fix.Fixed cover 11 plays totally-enclosed to the latter half of plug together with fixed cover upper cover 19.
In Fig. 5,14 is movable sleeving back-moving spring axle stereogram, and 15 is movable sleeving lower plate stereogram, and 16 is movable sleeving upper plate stereogram figure, and 20 is movable sleeving back-moving spring stereogram, and Figure 22, Figure 23, Figure 24 are movable sleeving lower plate three views.Figure 25, Figure 26, Figure 27 is movable sleeving upper plate three views.Supporting plate front portion arranges one and moves position cover, movable sleeving is by movable sleeving upper plate 16, movable sleeving lower plate 15, movable sleeving back-moving spring 20, parts such as movable sleeving back-moving spring axle 14 grade form, movable sleeving lower plate in the middle of the slab having a piece to protrude there is axis hole 69, a square 131 is respectively protruded in middle part, lower plate both sides, 102, movable sleeving upper plate vertical plates on both sides there is strip groove 130, 70 protrude square 131 with lower plate both sides, 102 match, by movable sleeving back-moving spring axle 14 through movable sleeving back-moving spring 20, passing movable sleeving lower plate intermediate shaft hole 69, then spring shaft 14 one end is inserted in supporting plate dark holes 54, the other end through movable sleeving lower plate intermediate shaft hole 69 axle is inserted in supporting plate 55 axis hole, again by strip groove 130 in movable sleeving upper plate vertical plates on both sides, 70 squares 131 protruded with middle part, lower plate both sides, 102 link into an integrated entity just forms movable sleeving, movable sleeving plays totally-enclosed to plug first half.
Fig. 1 is socket stereoscopic figure of the present invention, and have diameter to be less than the louvre of 1 millimeter in the both sides 3,112 of socket front portion and top 21,2 is socket door, and 1 is upper cover.Fig. 3 is that after socket of the present invention removes upper cover, inner body arranges stereogram, and Fig. 4 is the stereogram after plug is connected with socket, Fig. 6 is that socket of the present invention removes its inner all exploded perspective expanded view behind upper cover and a side, 111 is socket main body parts, 23 is near socket bottom surface ground floor plate, 22 is near socket bottom surface second layer plate, 24, 25 is socket door spring seats, 26, 27 is socket upper cover fastened by screw parts, 28 is positioning bead resettlement places, 2 is socket doors, 29, 30 is socket door springs, 31, 32 is positioning bead springs, 33, 34 is positioning beads, 35 is binding posts, 36 is coupled frame springs, 37 is coupled frame and pressing plate common axis, 38 is pressing plate and clamp block common axis, 39 is pressing plates, 40 is clamp blocks, 41 is gear shaft plates, 42 is coupled frames, 43, 44, 45 is three contacts with copper pigtail, 43a, 44a, 45a is the cone that top, contact copper coin raises up, 46,47,48 is three contact springs, and 49 is moving contact frames.
Single-phase its optimal way of three pole sockets of the present invention is the highest use voltage is 250 volts, screw is adopted to connect when external cable is connected with socket, live wire, ground wire, to be three copper pigtails to have resistant to elevated temperatures hard contact and be connected and jointly form afterwards with being welded in zero line three electrodes below three metallic plates, the shape of contact is square also can be circular, three contacts are arranged in parallel, head and the tail alignment, ground wire is extremely placed in the middle, live wire electrode, neutral line electrode is in both sides, ground wire pole, its spacing distance is the same with three contacts on plug, full closeding state is in when socket is not connected with plug, still full closeding state is in after connection, inject and extract socket in the process of socket at plug and be in full closeding state all the time, socket and plug to connect on rear socket three electrode contacts and three electrode contacts in plug and closes and form elastic surface and contact.
The cone 43a that top, contact copper coin mid portion has one to raise up, 44a, , 45a, with moving contact frame upper spring seat 124, 125, 75 are used for fixing contact spring 46 together, 47, 48 do not slide, copper coin one end is parallel to be curved 90 degree and to cold pressing with copper pigtail muon physics and be connected, the other end is also parallel curves 90 degree, wherein earth wire contact 44 than live wire and zero line contact low go out a part, respective springs 47 also grows a part, when such design is that socket and plug connects, earth wire contact first contacts, this purpose is separated after earth wire contact during separation, guarantee user's personal safety.
When contact and top copper coin weld complete and with copper pigtail muon physics cold pressing be connected after can be installed to moving contact frame from front, moving contact frame 49 is resettlement places of three contacts 43,44,45, and Figure 56 is socket moving contact frame vertical view.Figure 57 is socket moving contact frame right view.Figure 58 is socket moving contact frame front view.Figure 59 is socket moving contact frame upward view.Its front 128,129,77,126,127,76 is square opening below, square opening inner roof wall is provided with helical spring seat 124,125,75, when after three closings of contact on three contacts on moving contact frame and plug because there is spring upper end, three contacts on moving contact frame, can to make on moving contact frame three contacts all around four direction adjust up and down, guarantee three pairs of contact forming surfaces contacts instead of point cantact.Copper coin both sides, top, contact are prolonged by the limit curving 90 degree and are ridden over bottom moving contact frame in former and later two planes, and Figure 41 is the front view after socket moving contact frame installs contact and spring, is not drawn by copper pigtail in this figure.There is clamp block slideway 78 this moving contact frame upper end, and moving contact frame slideway voltage supply plate 40 when rising, decline slides.
Finally drive three contacts 43,44,45 in socket to move down by mechanical interlock to close with three contact on plug, be socket door with plug first device contacted when a plug is to be inserted into the socket.Figure 47, Figure 48, Figure 49, Figure 50 are 4 views of socket door, and socket in front of the door portion has slot 96, arrange a cross metallic plate 97 in crossbeam middle lower portion, and cross metallic plate is the spring base of socket door spring.The cuboid of socket door both sides moves forward along with plug and moves inwards.The Thickness Ratio plate thickness of socket door is slightly thin, and the insulation dignity that supporting plate can be made like this to enter in socket rear supporting plate between two contacts keeps close contact with socket inner walls face, can prevent arc short-circuit.
Socket door spring 29, 30 is omit slightly in the middle of two, the brute spring composition that two is slightly thin, these, two springs form elasticity with socket door ten in-line metallic plate 97 and are connected, other end and socket inner walls 24, two sheet metal spring bases on 25 form elasticity and connect, the socket door spring 29 when moving inwards under the thrust of socket door at plug, 30 start to produce resistance, stop and move inwards, such design is that people is difficult to push socket door open when not having plug, when a mobile segment distance rear socket door spring 29, 30 is vertical with socket door, now resistance is zero, when socket door continues reach by positioning bead location rear socket door spring 29, 30 start to produce power-assisted.These two socket door springs 29,30 help plug to overcome the reaction force of following 5 springs after producing power-assisted, i.e. the elastic force of 3 springs 46,47,48 of moving contact frame contact, the elastic force of coupled frame spring 36, the elastic force of plug movable sleeving spring 20.
In Fig. 6 42 is coupled frame stereograms, and Figure 28, Figure 29, Figure 30, Figure 31 are coupled frame 4 views, and when moving inwards under the thrust of socket door at plug, promotion coupled frame 42 liang of heel posts 71,121 move by the cuboid of socket door both sides.Coupled frame 42 is one of them device transmitting plug thrust, and the effect of coupled frame is that the power that the transmission of socket door comes is passed to pressing plate again.Coupled frame rear portion two heel post has axis hole 79, and below coupled frame centre, forward part has a helical spring seat 80, is used for connecting spring 36 between binding post 35, and coupled frame front end narrow part 81 is connected with pressing plate 82, the action of band dynamic pressure plate 40.
Figure 39 is pressing plate stereogram, and Figure 51, Figure 52, Figure 53, Figure 54, Figure 55 are pressing plate 5 views, and pressing plate is that the power passed over by coupled frame passes to clamp block again.There is axis hole 83 pressing plate 39 rear end, and axis hole front portion has square hole 84 to allow coupled frame spring 36 pass, and there is a slot 82 square hole front portion, and there is an axis hole 85 slot front portion, and wherein square hole 84 also can be made into the shape such as circle or polygon.
Coupled frame 42, coaxial with pressing plate 39, both are passed from socket main body 98 by an axle 37, through coupled frame one end and pressing plate one end, passing from the pressing plate other end and the coupled frame other end is fixed on socket main body axis hole 6, then by gear shaft plate 41 insertion groove, block axle and move vertically, gear shaft plate also plays a role to the totally-enclosed of socket simultaneously.Figure 42, Figure 43 are gear shaft plate two views.
Power is passed to clamp block 40 by pressing plate 39, in Fig. 6,40 is clamp block stereograms, Figure 44, Figure 45, Figure 46 are clamp block three views, clamp block one flat plate has in the middle of two pieces of parallel risers, 72,120 two pieces of risers to have axis hole 86, this axis hole is coupled together by a thin axle 38 with pressing plate or the anterior axis hole 85,105 of coupled frame, again the thin axle two ends passed are curved 90 degree, prevent axle 38 from coming off.
The mode that the present invention also can adopt coupled frame 42 to be directly connected with clamp block 40, Figure 62, Figure 63 are the vertical view that is directly connected with clamp block 40 of coupled frame and left view, coupled frame front panel 106 extends forward, its anterior narrow part is provided with an axis hole 105, this axis hole 105 is connected by a thin axle 38 with clamp block axis hole 86, then thin axle two ends are curved 90 degree, prevent axle 38 from coming off.Pressing plate can omit by such connection, makes socket reduce by a part, reduces costs.
Clamp block 40 slides on moving contact frame slideway 78, and be that plug thrust passes to last force-transmitting part of moving contact frame, drive moving contact frame moves up and down by it, makes three closings of contact or disconnection on three contacts and plug on moving contact frame.
Binding post 35 is used to connect external cable device, in Fig. 6,35 is binding post stereograms, Figure 32, Figure 33, Figure 34, Figure 35, Figure 36 is binding post 5 views, extension board is forward arranged at its top, plate there is spring base 87, support coupled frame spring 36, binding post front is divided two-layer, upper strata has a rectangle entrance hole 88 to have a terminal screw 89, rectangle entrance hole, fenced up by riser 90 around terminal screw, there are two rectangle entrance holes 92 in binding post lower floor, 93, two terminal screws 94, 95, centre is separated by riser 91, left and right and upper strata are surrounded by riser, the back side is a plane below except spring base 87 is arranged at top, its base portion 103, 104 with socket main body slot 24, 26, 25, 27 form secure fit.When binding post is installed to socket main body slot 24,26, after 25,27, keep firm under the pressure effect of coupled frame spring 36.
Coupled frame spring 36 passes through coupled frame 42, pressing plate 39, clamp block 40 by moving contact frame jack-up when socket and plug is separated, when after plug insertion socket, coupled frame dead spring 36, for plug extract after by coupled frame 42, pressing plate 39, clamp block 40 by ready for moving contact frame jack-up.
Being formed integrally above and below of socket, become upper cover, Figure 60, Figure 61 are 2 views of upper cover, and external cable enters socket by entrance hole 4, and two holes 5,123 are two holding screw holes of upper cover, and there are two plates 113,122 the inner both sides of upper cover, before socket, below and the securing part that comprises of side, two, left and right become socket main body, in Fig. 6,111 is the socket main bodies removing upper cover and a side, Figure 40 is the view near bottom surface first laminate 23, before this plate, respectively there is a circular hole 73 both sides, 119 is two positioning beads 33, 34 positions, two springs 31, 32 1 crowns two positioning beads, other end withstands in the spring base of bottom surface, keep-spring does not slide, the second laminate 22 near bottom surface on a flat board, has two pieces perpendicular to the riser 74 of flat board, 118, Figure 37, Figure 38, Figure 39 is three views of the second laminate 22 near bottom surface, two risers are anterior short in rear portion, three contacts and plug three closings of contact after moving contact frame falls, the three pairs of contacts are by two pieces of risers 74 perpendicular to flat board, 118 separate, prevent arc short-circuit, three copper pigtail are also separated by two risers simultaneously, it is the space of socket door movement between first laminate 23 and the second laminate 22, it is socket door spring mobile space between bottom surface and the first laminate, it is moving contact frame 49 slideway baffle plates that socket main body protrudes two elongated plates 99,100, restriction moving contact frame 49 can only slide up and down, the upper end that socket main body protrudes two elongated plates 99,100 respectively has a slot 114,115 backward, these two slots be with on cover two plates 113,122 and coordinated fixed cover effect, before socket, face and upper cover can make planar shaped, also can make garden arc.
When plug is connected with socket, each parts action is as follows:
Plug, socket are installed sequentially, the first half of plug covers by the movable sleeving on plug under the effect of spring 20, three electrodes containing three contacts by totally-enclosed in the inside; On socket, socket door 2 is in closed condition, is withstood by door under the effect of two door springs 29,30, and moving contact frame waits for that plug enters above the effect of coupled frame spring 36 moves down into.
When plug socket, on plug, movable sleeving is blocked by socket front panel, the supporting plate being loaded with three electrodes moves forward, now movable sleeving keeps Elastic Contact with socket front panel under the effect of spring 20, make on plug supporting plate three electrodes remain full closeding state in moving process, two, plug mounting plate back side positioning bead anchor point 52,53 is located by the positioning bead 33,34 be inserted on a rear socket when plug; When plug starts to enter socket, socket door moves backward, at this moment needs to push hard the resistance overcoming two door springs 29,30, when the supporting plate on plug progresses into, when socket door moves gradually backward, the resistance of two door springs 29,30 is from large to small to zero, finally becomes power-assisted; Socket door promotes coupled frame after moving a segment distance backward, coupled frame is with again dynamic pressure plate 39, clamp block 40 finally to drive moving contact frame to move down while dead spring 36, after plug is inserted into position, moving contact frame moves down and puts in place, and on moving contact frame, three contacts are just in time closed with three contacts on plug under three springs 46,47,48 act on forms tight face and contact.
All the time keep Elastic Contact with socket front panel move the effect being enclosed within spring 20 when plug is pulled up from socket under, on plug supporting plate, three electrodes 7,8,9 are in full closeding state all the time in outside moving process together with supporting plate; Socket is in the outside moving process of plug, coupled frame spring 36 is by coupled frame 42 upwards jack-up, drive on moving contact frame 49 and move, coupled frame two heel post promotes socket door both sides cuboid and follows the together outwards movement of plug supporting plate by socket door, the entrance that rear socket door also closes socket immediately extracted by plug, makes socket remain at full closeding state.
By reference to the accompanying drawings embodiments of the present invention are elaborated above, but the present invention is not limited to the concrete structure of above-mentioned execution mode.Coupled frame can drive moving contact frame to move up and down by pressing plate, clamp block, also can omit and pressing plate direct connection with clamp block drive moving contact frame to move up and down; Square hole in the middle of pressing plate can make circular port, also can make polygonal hole; Before socket, face and upper cover can be made is planar shaped, also can make circular arc, or other shapes, the contact on plug and socket can be square also can be circular, fixed cover upper cover side entrance hole can be square, also can make circle or other shapes; As long as it is all totally-enclosed for changing plug, socket howsoever, injects or extract in the process of socket also all keep totally-enclosed separately at plug, plug and socket form contact elastic surface by mechanical linkage and contact and all drop among protection scope of the present invention.
Claims (11)
1. single-phase three extremely totally-enclosed contact-type surface contact contact plugs, its the highest use voltage is 250 volts, one of part of each electrode is elongated metal plate, 90 degree are curved and jewel hole in one end of three electrodes, hank knotting, be connected with external cable with screw, live wire electrode, ground wire pole, the other end of neutral line electrode three elongated metal plate electrodes is welded with resistant to elevated temperatures hard contact, the shape of contact is square, three elongated metal plates with contact are arranged in parallel, head and the tail alignment, ground wire is extremely placed in the middle, live wire electrode, neutral line electrode is in both sides, ground wire pole, full closeding state is in when plug is not connected with socket, still full closeding state is in after connection, inject at plug and extract in the process of socket and be in full closeding state all the time, after plug and socket connect, three electrode contacts and three electrode contacts in socket close and form elastic surface and contact on plug, it is characterized in that: three contacts be welded on respectively the first strip copper coin (7), the second strip copper coin (8), one of the 3rd strip copper coin (9), but do not align with copper coin, but slightly more backward, three strip copper coins are given prominence to a square and are used for fixing the invariant position of three copper coins in supporting plate in the side of every block plate, there are three strip grooves (107 in supporting plate front, 108, 109) with the first strip copper coin (7), second strip copper coin (8), 3rd strip copper coin (9) profile matches, three strip copper coins are fixedly mounted in the groove of supporting plate front, three strip grooves (107 on supporting plate, 108, 109) there is undercut (58 front portion, 59, 60) coincide with three strip copper coin front portions, two pieces of baffle plates (50 are stretched out near terminal screw one end at supporting plate, 51) by three screw wiring points separately, the supporting plate back side is also provided with groove, be provided with two positioning bead anchor points (52, 53) be used for determining that plug stretches into the size of socket, the back side is also provided with spring shaft axis hole (54) and one by axle and the mechanism (55) can blocking axle upper spring (20), supporting plate respectively has a screw hole (56 near both sides, terminal screw one end, 57) fixed cover is used for fixing.
2. according to single-phase three extremely totally-enclosed contact-type surface contact contact plugs described in claim 1, it is characterized in that: after three copper coins with contact are inserted supporting plate, be provided with a fixed cover (11) at supporting plate rear portion, fixed cover upper cover (19), there is outstanding elongated plates fixed cover inwall middle part along four limits, the shape surrounded and supporting plate rear portion form secure fit, three copper coins with contact are held down near terminal screw one end, respectively there is a hole (110 fixed cover both sides, 110a), with two screws (12, 13) be fixed on supporting plate (10) through hole, middle part, fixed cover front has an elongate holes, a semicircle mouth (61) is upwards had in the middle of elongate holes, both sides, fixed cover bottom (101, 101a) receive inwards near supporting plate, in the middle of fixed cover, there are two circular holes (116 both sides, 117), be used to the screw hole be connected with fixed cover upper cover, fixed cover upper cover (19) left and right and upper end respectively have a riser (62,63,64) inner two square column (65,66) of upper cover and a protruding plate (67) to be fenced up, and a cant board leaves a square opening (68), inner two the square column inside of upper cover are provided with cap nut, in fixed cover upper cover, protruding plate is up-narrow and down-wide, secure fit is become with elongate holes that fixed cover is opened, after fixed cover upper cover (19) and fixed cover (11) close, spring shaft (14) one end (55) is pushed down and is made it fix by protruding plate (67), and fixed cover (11), fixed cover upper cover (19) play sealing process to plug connector rear.
3. according to single-phase three extremely totally-enclosed contact-type surface contact contact plugs described in claim 1, it is characterized in that: after three copper coins with contact are inserted supporting plate, supporting plate front portion arranges a movable sleeving, movable sleeving is by movable sleeving upper plate (16), movable sleeving lower plate (15), movable sleeving back-moving spring (20) and movable sleeving back-moving spring axle (14) composition, movable sleeving lower plate in the middle of the slab having a piece to protrude there is axis hole (69), a square (131 is respectively protruded in middle part, lower plate both sides, 102), movable sleeving upper plate vertical plates on both sides there is strip groove (130, 70) square (131 is protruded with lower plate both sides, 102) match, movable sleeving plays sealing process to plug front portion.
4. single-phase three extremely totally-enclosed contact-type surface contact contact bases, its the highest use voltage is 250 volts, screw is adopted to connect when external cable is connected with socket, live wire electrode, ground wire pole, neutral line electrode three electrodes are welded in have after resistant to elevated temperatures hard contact is connected below metallic plate by three copper pigtails jointly form with three, the shape of contact is square, three contacts are arranged in parallel, head and the tail alignment, ground wire is extremely placed in the middle, live wire electrode, neutral line electrode is in both sides, ground wire pole, its spacing distance is the same with three contacts on plug, full closeding state is in when socket is not connected with plug, still full closeding state is in after connection, inject and extract socket in the process of socket at plug and be in full closeding state all the time, socket and plug to connect on rear socket three electrode contacts and three electrode contacts in plug and closes and form elastic surface and contact, it is characterized in that: top, contact copper coin mid portion has a cone raised up (43a, 44a, 45a), copper coin one end is parallel to be curved 90 degree and to cold pressing with copper pigtail muon physics and be connected, the other end is also parallel curves 90 degree, wherein contact, ground wire pole (44) than live wire electrode and neutral line electrode contact low go out a part of respective springs (47) also grow a part, when socket and plug connects, contact, ground wire pole first contacts, and separates during separation behind contact, ground wire pole, moving contact frame (49) is the resettlement place of three contacts (43,44,45), and its front is three square openings (128,129,77), is three square openings (126,127,76) below, below three square opening (126,127,76) inner roof walls are respectively equipped with helical spring seat (124,125,75), push down copper coin upper lobes cone (43a, 44a, 45a) rear spring seat (124,125,75) when one end of spring (46,47,48) to stretch in the spring other end spring is not slided, there is clamp block slideway (78) this moving contact frame upper end, and moving contact frame slideway voltage supply plate (40) when rising, decline slides.
5. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 4, it is characterized in that: there is slot (96) socket door (2) front portion, arrange a cross metallic plate (97) in crossbeam middle lower portion, the both sides of socket door are rectangular structure, socket door spring (29, 30) be omit slightly in the middle of two, the brute spring composition that two is slightly thin, these, two springs form elasticity with socket door cross metallic plate (97) and are connected, other end and socket inner walls (24, 25) two sheet metal spring bases on form elasticity and connect, these two springs (29, 30) in socket door closedown situation, drag effect is played, when these two springs (29 after plug socket, 30) power-assisted effect is played, plug is helped to overcome the reaction force of following 5 springs, i.e. 3 springs (46 of moving contact frame contact, 47, 48) elastic force, the elastic force of coupled frame spring (36), the elastic force of plug movable sleeving spring (20).
6. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 5, it is characterized in that: plug thrust passes to coupled frame (42) through socket door, there are two columns (71 vertically downward both sides, coupled frame rear portion, 121), axis hole (79) is arranged at column top, below coupled frame centre, forward part has a helical spring seat (80) to be used for connecting the coupled frame spring (36) between binding post (35), coupled frame front end narrow part (81) is connected with the pressing plate hook (82) on pressing plate (39), band dynamic pressure plate (39) action.
7. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 6, it is characterized in that: there is axis hole (83) pressing plate (39) rear end, there is square hole (84) axis hole front portion, coupled frame spring (36) is allowed to pass, there is a slot (82) square hole front portion, there is an axis hole (85) slot front portion, and pressing plate is that the power passed over by coupled frame passes to clamp block again; Coupled frame (42) is coaxial with pressing plate (39), both are passed from socket main body (98) by an axle (37), through coupled frame one end and pressing plate one end, passing from the pressing plate other end and the coupled frame other end is fixed on socket main body axis hole (6), then by gear shaft plate (41) insertion groove, block axle and move vertically.
8. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 6, it is characterized in that: power is passed to clamp block (40) by pressing plate (39), clamp block one flat plate has two pieces of parallel risers (72,120), axis hole (86) is had in the middle of two pieces of risers, this axis hole is that anterior axis hole (85) is coupled together by a thin axle (38) with pressing plate, again the thin axle two ends passed are curved 90 degree, prevent axle (38) from coming off.
9. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 6, the mode that coupled frame (42) is directly connected with clamp block (40), coupled frame front panel (106) extends forward, its anterior narrow part is provided with an axis hole (105), this axis hole (105) is connected by a thin axle (38) with clamp block axis hole (86), after connection, thin axle two ends is curved 90 degree.
10. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 4, it is characterized in that: binding post (35) is used to connect external cable device, also be a spring base simultaneously, support coupled frame spring (36), extension board is forward arranged at its top, plate there is spring base (87), coupled frame spring (36) passes through coupled frame (42) when socket and plug is separated, pressing plate (39), clamp block (40) is by moving contact frame jack-up, when after plug insertion socket, coupled frame pressure coupled frame spring (36) for plug extract after pass through coupled frame, pressing plate, clamp block is by ready for moving contact frame jack-up, binding post front is divided two-layer, there are a rectangle entrance hole (88) and a terminal screw (89) in upper strata, rectangle entrance hole (88) and a terminal screw (89) are around fenced up by riser (90), there are two rectangle entrance holes (92 in binding post lower floor, 93), two terminal screws (94, 95), centre by riser (91) separately, left and right and binding post front two-layer up and down in upper strata surrounded by riser, the back side is a plane below except spring base (87) is arranged at top, its base portion (103, 104) with socket main body slot (24, 26), (25, 27) secure fit is formed.
11. according to single-phase three extremely totally-enclosed contact-type surface contact contact bases described in claim 4, it is characterized in that: being formed above and below of socket integrally becomes upper cover, there are two plates (113 the inner both sides of upper cover, 122), entrance hole (4) is had after upper cover, two screw holes (5, 123), before socket, below and the securing part that comprises of side, two, left and right become socket main body, louvre (3 in a row is had at upper cover and body front part both sides, 21, 112), the first laminate (23) near bottom surface respectively has a circular hole (73 in both sides above, 119) be two positioning beads (33, 34) position, two springs (31, 32) crown two positioning beads, other end withstands in the spring base of bottom surface, keep-spring does not slide, the second laminate (22) near bottom surface on a flat board, has two pieces perpendicular to the riser (74 of flat board, 118), riser is anterior short in rear portion, socket main body protrudes two elongated plates (99, 100) be moving contact frame (49) slideway baffle plate, restriction moving contact frame (49) can only slide up and down, socket main body protrudes two elongated plates (99, 100) upper end respectively has a slot (114 backward, 115), these two slots be with on cover two plates (113, 122) fixed cover effect has been coordinated, before socket, face and upper cover make planar shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210026994.5A CN102544829B (en) | 2012-01-31 | 2012-01-31 | Single phase tripolar whole sealing contact-type surface contact plug and socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210026994.5A CN102544829B (en) | 2012-01-31 | 2012-01-31 | Single phase tripolar whole sealing contact-type surface contact plug and socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102544829A CN102544829A (en) | 2012-07-04 |
| CN102544829B true CN102544829B (en) | 2014-12-31 |
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| CN201210026994.5A Expired - Fee Related CN102544829B (en) | 2012-01-31 | 2012-01-31 | Single phase tripolar whole sealing contact-type surface contact plug and socket |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10439311B2 (en) * | 2016-08-08 | 2019-10-08 | Te Connectivity Corporation | Receptacle connector with alignment features |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1371514A (en) * | 1962-10-03 | 1964-09-04 | Bbc Brown Boveri & Cie | Electric coupling formed by two coupling heads |
| GB1165463A (en) * | 1967-04-24 | 1969-10-01 | Bassani Spa | Electric Plug and Socket Arrangements |
| US3491326A (en) * | 1967-05-19 | 1970-01-20 | Bolkow Gmbh | Disengageable electrical connector with contact protecting means |
| US5030119A (en) * | 1989-09-27 | 1991-07-09 | Safe Care Products, Inc. | Safety plug |
| GB2362767A (en) * | 1999-02-03 | 2001-11-28 | Modular Connections Australia | Electrical coupler |
| CN101488614A (en) * | 2009-02-26 | 2009-07-22 | 王承刚 | Thin general plug, socket |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10142196A1 (en) * | 2001-08-29 | 2003-03-20 | Harting Automotive Gmbh & Co | Socket for a dirt-protected plug connection and plug connection |
-
2012
- 2012-01-31 CN CN201210026994.5A patent/CN102544829B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1371514A (en) * | 1962-10-03 | 1964-09-04 | Bbc Brown Boveri & Cie | Electric coupling formed by two coupling heads |
| GB1165463A (en) * | 1967-04-24 | 1969-10-01 | Bassani Spa | Electric Plug and Socket Arrangements |
| US3491326A (en) * | 1967-05-19 | 1970-01-20 | Bolkow Gmbh | Disengageable electrical connector with contact protecting means |
| US5030119A (en) * | 1989-09-27 | 1991-07-09 | Safe Care Products, Inc. | Safety plug |
| GB2362767A (en) * | 1999-02-03 | 2001-11-28 | Modular Connections Australia | Electrical coupler |
| CN101488614A (en) * | 2009-02-26 | 2009-07-22 | 王承刚 | Thin general plug, socket |
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| CN102544829A (en) | 2012-07-04 |
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