CN2438238Y

CN2438238Y - Simple universal adapter

Info

Publication number: CN2438238Y
Application number: CN 00245969
Authority: CN
Inventors: 李秋山; 李沈素珍
Original assignee: Individual
Current assignee: Cai Jinchou
Priority date: 2000-07-31
Filing date: 2000-07-31
Publication date: 2001-07-04
Anticipated expiration: 2010-07-31

Abstract

The utility model discloses a Simple universal adapter which is used for adapting power. The shape of the main body 11 of the adapter is based on the specification of a German plug, and a panel 111 and the main body 11 are formed in an integrally injection molding. The inner parts of accommodating regions 12 which are formed at both sides of the main body are respectively provided with a universal conducting rack 121, and the inner part of an accommodating region 13 which is formed at the center part of the main body is assembled with a grounding rack 131 with a single clamping plate 131. An inserting plate 1312 of the grounding rack is inserted into an inserting slot 132 of the accommodating region 13. The main body 11 of the adapter and a pinboard 16 are combined into integration by buckled flanges 15 and buckled notches 162, and the buckled flanges 15 and the buckled notches 162 are respectively arranged on the main body 11 of the adapter and the pinboard 16. The inner part of a German grounding groove 14 of the main body of the adapter is provided with ground strips 141 and 142, and one side edge of each ground strip is contacted and connected with the grounding rack 131. The utility model has the advantages of simple members, fast assembly, and low cost.

Description

Simple and easy universal adapter

The utility model relates to a kind of simple and easy universal adapter of the power supply of transferring.

Common adapter as shown in figure 29, it mainly is to establish a panel 61 with jack in the place ahead of adapter body 6 group, and in the groove that panel 61 and adapter body 6 front sides are constituted, group is established one a group of conduction rack 611 and a grounding rack 612 respectively, simultaneously when making pinboard 62 be fitted in adapter body 6 rears, the end of pin 621 the inners can be contacted with conduction rack 611 and grounding rack 612, establish three conductive reeds 613 and organize respectively betwixt, with realization pin 621 and conduction rack 611 and grounding rack 612 certain conductings, but above-mentioned adapter has following shortcoming:

1, member is various, and material cost is increased;

2, assembly program complexity increases labour cost;

3, between pin and conduction rack and grounding rack, add conductive reed in addition, also often loosening except that making the cost increase because of assembling the improper member that makes, and form the loose contact problem;

4, can't be plugged on the socket of Germany and French specification and use,, except volume and weight increase, cost is improved so need pinboard at adapter rear winding one moral formula plug.

The another kind of common adapter that is plugged on German socket use, as shown in figure 30, it is at adapter body 6 rears, the pinboard 615 of the German plug 614 of direct assembly one tool, but this kind design tool is equivalent to two times thickness, occupy sizable space when carrying and make, have the shortcoming that weight is big, cost is high.

The purpose of this utility model provides a kind of simple element, assembling simple and easy adapter quick, with low cost, and the pinboard of the various specification pin of its combining uses as general adapter, also can be used in moral, method two countries specification socket.

For reaching above-mentioned purpose, the utility model by the following technical solutions:

The utility model includes an adapter body, one group of universal type conduction rack, a grounding rack, a pinboard, one group of ground strip, wherein, the adapter body is to be basic external form with German plug specification, the at one end one-body molded panel that a tool jack is arranged, respectively form a disposal area in inner both sides of the other end and central authorities, one side is provided with a slot in central disposal area, be provided with at least more than one snapping flange and positioning convex portion at adapter body one end periphery, be provided with a winding geosyncline in adapter body outer rim; One group of universal type conduction rack is organized respectively and is located in the set disposal area, adapter body one end both sides, is equipped with an extension in the wherein side of two conduction racks; The grounding rack group is located in the central disposal area of adapter body, and it is one to have the grounding rack of single clamping plate, and the set plate of grounding rack one side is inserted in the slot of disposal area one side, and grounding rack is fixed; The snapping flange relative position place of pinboard periphery and adapter body periphery is provided with the snapping recess, and a side of snapping recess is provided with breach, and the snapping flange of adapter body enters the snapping recess and fastens winding from indentation, there and is integral; One group of ground strip group is located in the moral formula ground slot of the formed symmetry in adapter body both sides, one of this two ground strip lateral margin all be located at adapter body center disposal area in grounding rack contact and be connected, assembly can contact ground strip with the grounding reed of German socket after having the adapter body of German pin pinboard to insert in the slot of German socket.

The utility model will be further described below in conjunction with drawings and Examples:

Fig. 1 is the perspective exploded view of the utility model embodiment.

Fig. 2 is the three-dimensional appearance schematic diagram of the utility model embodiment.

Fig. 3 is a cross section of the present utility model cutaway view.

Action schematic diagram when Fig. 4 makes up or dismantles for the utility model pinboard.

Fig. 5, Fig. 6 for several can with the pinboard with different size pin of the utility model adapter body assembly.

Fig. 7 has the enforcement illustration of the rotary joint of screw thread for adapter body superordinate another kind of the present utility model.

The pinboard that Fig. 8 establishes tool Germany specification pin for the utility model group can insert the perspective exploded view of German socket.

Fig. 9 is the combination partial schematic sectional view of Fig. 8.

Figure 10, Figure 11 organize the perspective exploded view that the pinboard of establishing Australia and Denmark's specification pin can insert Australia and Denmark's socket respectively for the utility model.

The pinboard that Figure 12 establishes tool Germany specification pin for the utility model group can insert the perspective exploded view of French socket.

Figure 13 makes its ground connection inserting column be inserted the partial sectional view that contacts with ground strip by the earth jack on the pinboard for after the utility model adapter inserts French socket.

Figure 14 forms the enforcement illustration of the plug grafting use of special power a brain plug and a plurality of different sizes on the adapter panel for the utility model.

Figure 15 forms the enforcement illustration of the plug grafting use of another special power brain plug and a plurality of different sizes on the adapter panel for the utility model.

Figure 16 is the use detail drawing of Figure 15.

Figure 17 is the utility model forms a German socket on the adapter panel a kenel, can be for the enforcement illustration of German plug grafting use.

Figure 18 passes the hole schematic diagram of binding for ground strip end of the present utility model is provided with for lead.

Figure 19 is the partial schematic sectional view of Figure 18.

Figure 20 establishes a perspective exploded view that rotates back to compound safety cover plate for the utility model in the adapter panel sets.

Figure 21 is the compound section cross-sectional schematic of Figure 20.

Figure 22, Figure 23 are that the utility model is at the enforcement illustration of adapter panel according to the safety cover plate of the various different size jacks of required assembly.

Figure 24 establishes the perspective exploded view that another kind rotates back to compound safety cover plate for the utility model in the adapter panel sets.

Figure 25 is the combination partial schematic sectional view of Figure 24.

Figure 26 is the perspective exploded view that the utlity model has another form pinboard.

Figure 27 is the combination cross-sectional schematic of Figure 26.

Figure 28 organizes the perspective exploded view of establishing a socket for the utility model separately in adapter one side.

Figure 29 is the perspective exploded view of common adapter.

Figure 30 is the three-dimensional appearance schematic diagram of another common adapter.

1,4 is adapter, 11,41,6 is the adapter body, 111,411 is panel, 1111 is annular groove, 1112,117 is short slot, 1114,112,1181,119 is the general-purpose jack, 1115,1183 is ejection part, 113 is multipurpose computer jack, 1131 is supply hub, 1132,1621 is breach, 114,1141,164 is earth jack, 1151 is computer plug, 1151,1152,1153 is plug, 1151 is grounding pin, 116 is earth lead, 1171 is spring, 118,1113 is safety cover plate, 11821 are the button edge, 1182 elastic pinch plates, 12,13 is the disposal area, 121,611 is conduction rack, 122 is extension, 131,612 is grounding rack, 1311 is single clamping plate, 1312 is plate, 132,21 is slot, 14 is ground slot, 141,142 is ground strip, 1412 are perforation, 1411 are arcuation contact edge, 15 is the snapping flange, 151 is positioning convex portion, 116,18,615,62 is pinboard, 161,181,621 is pin, 162 is the snapping recess, 163 is location indentations, 17 is the screw thread rotary joint, 1811 is screw, 1812 is the distribution area, 182,51 is power line, 1821 is the interlocking ring, 1822 is screw, 2 is German specification socket, 22 is grounding reed, 2 ' is Australian baried type socket, 2 " be Denmark's baried type socket; 3 is French specification socket; 31 is the ground connection inserting column; 412; 42 are the assembly mouth; 5 is socket, 61 panels, 613 conductive reeds, 614 German plugs.

See also Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the adapter body 11 that it is foundation outline that the said simple and easy universal adapter 1 of the utility model includes with German plug specification, 111 ones of the panels of this transducer 1 are integrated injection molding with adapter body 11, and both sides form disposal area 12 within it, respectively establish a universal type conduction rack 121 in two disposal areas 12, be provided with central disposal area 13 in adapter body 11 central authorities, group is established a grounding rack 131 with single clamping plate 1311 in central disposal area 13, and the set plate 1312 of grounding rack 131 1 sides is inserted in the slot 132 of disposal area 13 1 sides when assembling, and grounding rack 131 is fixed, be provided with at least more than one snapping flange 15 at adapter body 11 1 end peripheries, periphery relative position place at each pinboard 16, be equipped with a snapping recess 162, and when assembling pinboard 16, after making the snapping flange 15 of adapter body 11 peripheries enter the breach 1621 of pinboard 16 periphery snapping recesses 162 1 sides earlier, again pinboard 16 is rotated, make snapping flange 15 enter the snapping mouth 162 of a side, and make pinboard 16 can be fast and adapter body 11 combined integrated or change, in adapter body 11 both sides form the moral formula ground slot 14 of symmetry, each group is provided with a ground strip 141,142, this two ground strip 141, a lateral margin of 142 all contacts with aforementioned grounding rack 131 and is connected, and can be after assembly has the adapter body 11 of German pin pinboard 16 to insert in the slot 21 of German socket 2, make ground strip 141,142 can contact as Fig. 8 with grounding reed 22, shown in Figure 9, simultaneously, the pinboard 16 that tool Australia and Denmark's pin also can be arranged in adapter 1 assembly, and make adapter 1 can insert Australia and Denmark's baried type socket 2 ', 2 " in the slot as Figure 10; shown in Figure 11; as to be provided with one or more positioning convex portion 151 at adapter body 11 1 end peripheries in addition; pinboard 16 peripheries with change by device body 11 positioning convex portion that is provided with 151 relative positions; be provided with location indentations 163, and make pinboard 16 and adapter body 11 be fastened the location.

See also Fig. 3, Fig. 4, Figure 12, shown in Figure 13, for adapter 1 can be plugged in the socket 3 of French specification simultaneously, it is the allocation of pinboard 16 pins to be set the jack 112 that rotates with panel 111 be a specific position, drift angle, on this group conduction rack 121, be equipped with extension 122, and when assembling pinboard 16 makes its pin 161 be rotated in the position location of drift angle, the extension 122 of pin 161 inner ends and conduction rack 121 is kept in touch, in addition on pinboard 16 with the relative position place of French socket 3 ground connection inserting columns 31, be provided with an earth jack 164, and the position that makes this earth jack 164 just is offset the side at adapter 1 panel 111 set earth jacks, and when making adapter 1 insert group in French socket 3, the earth jack 164 that makes its ground connection inserting column 31 by pinboard 16 is inserted, and with ground connection inserting column 31 insert be located at adapter body 11 in the arcuation contact edge 1411 of corresponding ground strip 141 1 sides contact, and formation ground connection effect, the utility model removes has simple element, assembling fast, outside the effect with low cost, its pinboard 16 that also has the various specification pin of combining is (as Fig. 5, shown in Figure 6) use and for being used in moral as general adapter, method two

countries specification socket

2,3 adapter, as shown in Figure 7, the utility model can be according to required pinboard 16 at the another kind of tool screw thread of adapter 1 superordinate rotary joint 17, and adapter 1 directly is screwed on the electrical equipment of power supply equipment or the identical seat that spins of other tool, reach the purpose of switching.

See also shown in Figure 14 again, the utility model can be on the panel 111 of adapter 1, the multipurpose computer jack 113 that brain plug 115 is pegged graft if can power, it is that supply hub 1131 with its both sides suitably extends, and peg graft for general plug 1151, and establish an earth jack 114 above it, and peg graft for the plug 1151 of general tool grounding pin 11511, in addition, both sides at this two supply hub 1131, respectively be provided with one and be symmetrical breach 1132, make adapter 1 except that brain plug 115 grafting of can powering are used, also can be for the plug 1151 of multiple kenel, 1152,1153 peg graft.

As Figure 18, shown in Figure 19, respectively be provided with a perforation 1412 in the end of the set ground strip 141,142 in adapter body 11 both sides, can pass connection for an earth lead 116, with usefulness as ground connection.

The utility model forms the table of comparisons that the plug of special power a brain plug and a plurality of different sizes peg graft to use on adapter 1 panel 111 as follows:

The table of comparisons

Numbering	Use countries and regions	Specification
Numbering	Use countries and regions	Specification	A	English Hong Kong, Malaysia, Singapore, Uganda, the United Arab Emirates	13A250V
B	English colony India	5A250V 15A250V	A		13A250V
B	English colony India	5A250V 15A250V	C	China's Mainland, New Zealand, Australia	10A250V
D	Denmark	15A250V	C	China's Mainland, New Zealand, Australia	10A250V
D	Denmark	15A250V	E	The Middle East	15A250V
F	The Middle East	15A250V	E	The Middle East	15A250V
F	The Middle East	15A250V	G	American Taiwan, Japan, the U.S., Canada, Cuba, Venezuela, Costa Rica, Guam, the Dominica, Ecuador, Hawaii, the Salvador, Haiti, Honduras, Mexico, Panama, Nicaragua, Paraguay, Philippine, Thailand, Guatemala	125V 250V
H	Taiwan, Japan, the U.S., Canada	20A250V	G		125V 250V
H	Taiwan, Japan, the U.S., Canada	20A250V	I	Taiwan, Japan, the U.S., Canada	15A250V
J	The China's Mainland		I	Taiwan, Japan, the U.S., Canada	15A250V
J	The China's Mainland		K	Italy	10～16A250V
L	Switzerland	10～16A250V	K	Italy	10～16A250V
L	Switzerland	10～16A250V	M	Taiwan, Japan, the U.S., Canadian China's Mainland, Philippine, Thailand	15A125V 250V
N	China's Mainland, New Zealand, Australia	250V	M		15A125V 250V
N	China's Mainland, New Zealand, Australia	250V	O	The Commonwealth of Independent States (CIS), Europe	Small household appliances 250V
P	Moral method, European (with side ground connection)	10～16A250V	O	The Commonwealth of Independent States (CIS), Europe	Small household appliances 250V
P	Moral method, European (with side ground connection)	10～16A250V	Q	English is old-fashioned and Hong Kong is old-fashioned	250V

See also Figure 15, shown in the Figure 16 and the table of comparisons, it is the adapter panel 111 computer power plug kenel of can pegging graft, above panel 111, be provided with two earth jacks 1141, respectively be provided with one in panel 111 both sides and be the general-purpose jack 119 that symmetric shape can supply multinational Socket pin to peg graft, and in the central authorities of this group general-purpose jack 119, be provided with two and be earth jack 1141 longitudinally, wherein the earth jack 1141 of a top is positioned at the earth jack position of former Socket for computor, and by the design of this kind socket, have outside the attaching plug of the computer of can pegging graft and form another kind, and the socket of the more multinational family plug of can pegging graft simultaneously is shown in the Figure 16 and the table of comparisons.

As shown in figure 17, the utility model can directly form the panel 111 of adapter 1 the German socket form of a tool slot 21 and grounding reed 22, can peg graft for German plug and use.

See also Figure 20 again, shown in Figure 21, at adapter panel 111 combinations one safety cover plate 118, adapter panel 111 1 sides be provided with one can a ccontaining spring 1171 short slot 117, and mask is buckled the elastic pinch plate 1182 of edge 11821 in the periphery of safety cover plate 118 is provided with, and make safety cover plate 118 fast the button group outside adapter panel 111, root edge one side at safety cover plate 118 is provided with an ejection part 1183, and the time penetrate the distolateral of adapter panel 111 short slots 117 in combination, and be subjected to the ejection of spring 1171 and locate, and make the jack set on the safety cover plate 118 1181 and the jack 112 of adapter panel 111 be the phenomenon of dislocation, and when desire is inserted plug, when then earlier safety cover plate 118 rotations being made jack 112 overlapping alignment of its jack 1181 and adapter panel 111, plug is inserted, and after pulling the plug out of the socket, this safety cover plate 118 i.e. homing again, and plug can't be inserted, reach purpose of safety, and, also can on adapter panel 111, comply with the safety cover plate 118 of the various different size jacks of required assembly, and peg graft as Figure 22 for single specification plug, shown in Figure 23.

See also Figure 24 again, shown in Figure 25, the utility model is organized on adapter panel 111 and is established another kind and rotate back to compound safety cover plate 1113, it is on the adapter panel, an if annular groove that does not run through 1111, and at adapter panel 111 1 side bottoms, but the short slot 1112 that is provided with a putting spring 1171 and communicates with annular groove 1111, the relative position of periphery at the safety cover plate 1113 of tool general-purpose jack 1114, be provided with an ejection part 1115, safety cover plate 1113 peripheries will be embedded in the annular groove 1111 of panel 111, and make this ejection part 1115 penetrate an end of short slot 1112, and be subjected to spring 1171 ejections and locate, and make the general-purpose jack set on the safety cover plate 1,113 1114 and the jack 112 of adapter panel 111 be the phenomenon of dislocation, reach purpose of safety.

Other sees also Figure 26, shown in Figure 27, pinboard 18 inner faces of adapter 1, an if distribution area 1812, and form a screw 1811 at the inner end of each pin 181, to be located at the interlocking ring 1821 of general appliances power source line 182 front ends by screw 1822 and lock the screw 1811 that fits over pin 181 the inners, and after pinboard 18 and adapter body 11 are made up, screw 1822 ends are contacted with conduction rack 121 and grounding rack 131, form an effect with appliance plug and adapter.

See also shown in Figure 28 at last, it is between the lower end of adapter body 41 upper ends and panel 411, each extends and forms the assembly mouth 42,412 of a symmetry, this locates then combining one socket 5, with the conducting that is connected with inner conduction rack and grounding rack of the power line 51 of socket 5, and make the adapter 4 can be in the side plugs of pegging graft more.

In sum, the utlity model has simple element, assembling advantage quick, with low cost, the pinboard of the various specification pin of its combining uses and has concurrently the adapter that can be used in moral, method two countries specification socket as general adapter.

Claims

1, a kind of simple and easy universal adapter, it includes an adapter body (11), two universal type conduction racks (121), one grounding rack (131), one pinboard (16), two ground strips (141), (142), it is characterized in that: adapter body (11) is to be basic external form with German plug specification, panel (111) in the one-body molded tool jack (112) of an end, respectively be formed with disposal area (12) in inner both sides of the other end and central authorities, (13), (13) one sides are provided with a slot (132) in central disposal area, be provided with at least more than one snapping flange (15) at adapter body (11) one end peripheries, be provided with two ground slots (14) in adapter body (11) outer rim;

Two universal type conduction racks (121) group is located in the disposal area (12) of adapter body (11) one end both sides, and a side of conduction rack (121) is provided with extension (122);

Grounding rack (131) is mounted in the disposal area (13) of adapter body (11) one end central authorities, grounding rack (131) is the grounding rack of tool clamping plate (1311), and the plate (1312) of grounding rack (131) one sides is inserted in the slot (132) of disposal area (13) one sides;

The periphery of pinboard (16) and the set snapping flange of adapter body (11) periphery (15) relative position place are equipped with a snapping recess (162), the side of snapping recess (162) is provided with breach (1621), and the snapping flange (15) of adapter body (11) enters snapping recess (162) and snapping fixedly pinboard (16) and adapter body (11) from breach (1621);

Two ground strips (141), (142) are mounted in the ground slot (14) of adapter body (11), a lateral margin of this two ground strip (141), (142) all with the central disposal area of adapter body (11) (13) in grounding rack (131) contact and be connected.

2, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: said adapter body (11) one end peripheries are provided with one or more positioning convex portion (151), positioning convex portion (151) relative position at pinboard (16) periphery and adapter body (11) is provided with location indentations (163), and adapter body (11) and pinboard (16) mat positioning convex portion (151) and location indentations (163) fasten the location.

3, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: the position location of the pin of pinboard (16) is positioned at panel (111) jack (112) and is a specific position, drift angle, go up and French socket (3) ground connection inserting column (31) relative position place at pinboard (16), be provided with an earth jack (164), the offset of this earth jack (164) is at a side of the set earth jack of adapter panel (111); By ground sheet (141) be located at adapter body (11) periphery wherein the geosyncline (14) that connects locate, the one end forms arcuation contact edge (1411).

4, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: the pinboard (16) of the various specification pin of said adapter body (11) combining.

5, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: said adapter body (11) is fused into one with pinboard (16).

6, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: the jack (112) that can establish various specification on the said panel (111).

7, according to claim 1 or 4 described a kind of simple and easy universal adapters, it is characterized in that: said adapter panel (111) is gone up the German socket that directly forms a tool slot (21) and grounding reed (22).

8, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: on the said adapter panel (111), be provided with the multipurpose computer jack (113) that the brain plug (115) of can powering is pegged graft, the supply hub of its both sides (1131) is lengthening suitably, establish an earth jack (114) above it, respectively be provided with one in the both sides of two supply hubs (1131) and be symmetrical breach (1132).

9, according to claim 1 or 8 described a kind of simple and easy universal adapters, it is characterized in that: said adapter panel (111) top is provided with two earth jacks (1141), respectively be provided with one in panel (111) both sides and be the general-purpose jack (119) that symmetric shape can supply multinational Socket pin to peg graft, central authorities at this group general-purpose jack (119), be provided with two and be vertical earth jack (1141), wherein the earth jack of a top (1141) is positioned at the earth jack position of former Socket for computor.

10, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: the set ground strip (141) in said adapter body (11) both sides, the end of (142) respectively are provided with perforation (a 1412) earth lead (116) and pass this perforation (1412) and connect.

11, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: said adapter panel (111) locates to make up a safety cover plate (118), adapter panel (111) one sides are provided with a short slot (117), a ccontaining spring (1171) in the short slot (117), mask was buckled the elastic pinch plate (1182) of edge (11821) in the periphery of safety cover plate (118) was provided with, elastic pinch plate (1182) is fastened on the panel (111), safety cover plate (118) root edge one side is provided with an ejection part (1183), this ejection part (1183) is one distolateral near short slot (117), and is subjected to the ejection location of spring (1171).

12, according to the described a kind of simple and easy universal adapter of claim 11, it is characterized in that: said adapter panel (111) group is established one and is rotated back to compound safety cover plate (1113), establish an annular groove that does not run through (1111) on the adapter panel (111), panel (111) one side bottoms are provided with one can a ccontaining spring (1171) and the short slot (1112) that communicates with annular groove (1111), safety cover plate (1113) is provided with general-purpose jack (1114), safety cover plate (1113) periphery is provided with an ejection part (1115) with the relative position of short slot (1112), the periphery of safety cover plate (1113) embeds in the annular groove (1111) of panel (111), its ejection part (1115) is through at an end of short slot (1112), and is subjected to the ejection of spring (1171) and locatees.

13, according to claim 11 or 12 described a kind of simple and easy universal adapters, it is characterized in that: the jack that can be provided with various different sizes on said safety cover plate (118) or the safety cover plate (1113).

14, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: pinboard (18) inner face of said adapter (1) is provided with a distribution area (1812), inner end at each pin (181) forms a screw (1811), interlocking ring (1821) lock that to be located at general appliances power source line (182) front end by screw (1822) fits in the screw (1811), and screw (1822) end contacts with conduction rack (121) and grounding rack (131).

15, according to the described a kind of simple and easy universal adapter of claim 1, it is characterized in that: between the lower end of said adapter body (41) upper end and panel (411), each extends and forms assembly mouth (42), (412) of a symmetry, this locates assembly one socket (5), the conducting that is connected with inner conduction rack and grounding rack of the power line (51) of socket (5).