CN110783788A

CN110783788A - Safety socket

Info

Publication number: CN110783788A
Application number: CN201911081811.8A
Authority: CN
Inventors: 曲铭凯; 赵桂萍
Original assignee: Hangzhou Tambu Technology Co Ltd
Current assignee: Ma Jinyu
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-02-11
Anticipated expiration: 2039-11-07
Also published as: CN110783788B

Abstract

The invention discloses a safety socket which comprises a socket shell and a power-on assembly, wherein the socket shell is provided with a socket opening; the electrifying assembly comprises an electrode mounting seat which is vertically provided with a ground wire connecting ring, a zero line connecting ring and a live wire connecting ring, a seat cover with a jack formed at the upper end, a conductive assembly and a blocking assembly; a positioning ring is formed at the lower end of the seat cover; the conductive component is formed with a connecting cylinder and fixedly connected with an elastic contact piece; a sleeve hole is formed on the blocking component and is fixedly connected with a plug connecting sheet; an elastic conducting strip is arranged in the connecting cylinder; the elastic conducting plate comprises a conducting plate and an elastic sheet; a baffle is formed on the blocking component corresponding to each elastic sheet; the conductive component is fixedly connected with a spring. The arrangement of the electrifying assembly and the electrode mounting base enables the three-pin plug to be inserted into the socket and can rotate 360 degrees, and the angle can be automatically adjusted when the three-pin plug is not long enough or is difficult to be inserted into the socket at a fixed angle; the baffle and the elastic sheet are arranged, so that the socket cannot be conductive to the power transmission line when a conductor is inserted into the jack in a power-on state, and the electric shock accident is avoided.

Description

Safety socket

Technical Field

The invention belongs to the technical field of sockets, and particularly relates to a safety socket.

Background

The three-pin plug is inserted into a three-pin socket and used for supplying power to electric equipment, the three-pin plug comprises a ground wire pin, a zero wire pin and a live wire pin, most of the three-pin sockets in the market are fixed sockets at present, the three-pin plug is difficult to be inserted into the socket at a fixed angle when the power wire is not long enough, and the fixed socket limits the insertion direction of the plug, so that the power wire of the plug can be used only by being bent; and the contact that is connected with the power in general socket is located the jack below, then can electrically conduct when having the conductor to insert and cause the accident, has great potential safety hazard to children, and it is also easy deposition too idle for a long time simultaneously.

Chinese patent No. CN101814683B discloses a rotary socket, which includes a rotary component, a fixing base and a power cord; the fixing seat is used for fixing the rotating assembly and can be respectively and electrically connected with the rotating assembly and the power line; the rotating assembly comprises a plurality of conductive terminals positioned on different rotating tracks, the fixed seat comprises a plurality of conductive sheets, and each conductive sheet is provided with an annular contact area with different sizes and is used for keeping electric connection with the conductive terminals when the rotating assembly rotates on the fixed seat, so that the plug is inserted into the rotating assembly to rotate, and the rotating function of the socket is realized; although the socket is convenient to use, when a conductor is inserted into the jack, the socket still can be electrified with a power supply under the condition that the socket is electrified, and the potential safety hazard still exists.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defect that the conductor is still electrified with a power supply when being inserted into the jack in the prior art, the safety socket with the protection function is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a safety receptacle comprising a receptacle housing and one or more power-on components mounted within the receptacle housing; the socket shell comprises an upper seat body and a lower seat body; the electrifying assembly comprises an electrode mounting seat fixedly connected to the inner bottom surface of the lower seat body, a seat cover rotationally connected to the upper end surface of the upper seat body, a conductive assembly coaxially rotationally connected to the inside of the electrode mounting seat and a blocking assembly slidably connected to the conductive assembly; the upper end of the seat cover is formed with jacks for plugging pins of the three-pin plug; the inner wall of the electrode mounting seat is provided with an annular ground wire connecting ring, an annular zero wire connecting ring and an annular live wire connecting ring which are respectively and electrically connected with a ground wire, a zero wire and a live wire along the vertical axis direction; the conductive assembly comprises a rotating disc; the upper end of the rotating disc is provided with two insulated connecting cylinders for accommodating a zero wire pin and a live wire pin of a three-pin plug; a positioning ring sleeved outside the connecting cylinder is formed at the lower end of the seat cover; the blocking assembly comprises a sliding disk; and a sleeve hole for the connecting cylinder to pass through is formed at the upper end of the sliding disc.

A limiting column is formed in the center of the rotating disc; a limiting ring in sliding connection with the limiting column is formed in the center of the sliding disc; the upper end of the sliding disc is fixedly connected with a plug connecting sheet which is used for being electrically connected with a ground wire pin; the rotating disc is positioned below the plug connecting sheet and is fixedly connected with an elastic contact piece; each connecting cylinder is internally provided with an elastic conducting strip; the upper end of the elastic conducting strip is inwards provided with a conducting strip which is bent downwards and is used for being electrically connected with the zero wire pin or the live wire pin; the middle part of the elastic conducting strip is provided with an elastic sheet which penetrates through the side wall of the connecting cylinder and is used for being electrically connected with the zero line connecting ring or the live line connecting ring; the sliding disc is provided with a baffle corresponding to each elastic sheet; the rotating disc is positioned outside the connecting cylinder and is fixedly connected with a spring for supporting the blocking assembly; when the baffle is positioned at the uppermost end of the stroke, the zero line connecting ring is disconnected with the corresponding elastic sheet, and the live line connecting ring is disconnected with the corresponding elastic sheet; and when the baffle is positioned at the lowest end of the stroke, the zero line connecting ring and the live wire connecting ring are respectively connected with the corresponding elastic sheets.

As an optimization scheme: the elastic sheet is bent upwards; the elastic contact piece comprises a ground wire contact which is electrically connected with the ground wire connecting ring; the ground contact is bent towards the ground connection ring; the lower end of the plug connecting sheet is formed with an inclined plane which is abutted against the ground wire contact; the ground wire contact is abutted against the inclined plane, so that the ground wire pin is electrically connected with the ground wire connecting ring, and the conduction of the ground wire is realized.

As an optimization scheme: the socket shell is provided with a power transmission line, and a first connecting line, a second connecting line and a third connecting line which are respectively connected with a ground wire, a zero line and a live wire of the power transmission line; the first connecting line is connected with the ground wire connecting ring; the second connecting wire is connected with the zero line connecting ring; the third connecting line is connected with the live wire connecting ring; the ground wire connecting ring is connected with the ground wire through the structure, the zero line connecting ring is connected with the zero line, and the live wire connecting ring is connected with the live wire.

As an optimization scheme: the lower end of the seat cover is fixedly connected with a dustproof strip at the position of the jack, so that dust can be prevented from entering the connecting cylinder.

Compared with the prior art, the invention has the beneficial effects that: in an initial state, the blocking assembly is positioned at the uppermost end of the stroke by the spring, and the zero line connecting ring and the live wire connecting ring are respectively blocked by the baffle plate, so that the zero line connecting ring or the live wire connecting ring is not connected with the corresponding connecting cylinder; at the moment, the ground wire contact is separated from the ground wire connecting ring, and the zero line connecting ring and the live wire connecting ring are separated from the corresponding elastic sheets respectively by the compression of the elastic sheets. Before the three-pin plug is inserted, the power-on assembly is adjusted to enable the socket to be matched with the angle of the three-pin plug, and therefore the three-pin plug can be inserted into the socket.

When in use, the three-pin plug is inserted into the electrifying assembly, the ground wire pin is inserted into the plug connecting sheet, and the zero wire pin and the live wire pin are respectively connected with the corresponding conducting sheets; the lower end of the ground wire pin is abutted against the upper end of the connecting sheet in the process of inserting the three-pin plug to enable the blocking assembly to move downwards, the inclined surface is abutted against the ground wire contact, the elastic contact sheet is bent while the blocking assembly moves downwards, the ground wire contact moves to the outermost end and is connected with the ground wire connecting ring, meanwhile, each elastic sheet is separated from the baffle, each elastic sheet extends outwards under the action of elastic force and is abutted against the zero line connecting ring and the live wire connecting ring respectively, the three-pin plug is powered on, and at the moment, the spring is compressed.

When the three-pin plug is pulled out, the three-pin plug is powered off when the lower ends of the zero line pin and the live line pin of the three-pin plug are separated from the conducting strips; meanwhile, the plug connecting sheet clamps the ground wire pin and the spring is reset, when the three-pin plug is pulled out, the blocking assembly is driven to move upwards, so that the zero line connecting ring and the live wire connecting ring are blocked by the corresponding baffle again, at the moment, the ground wire contact is restored to the initial state and separated from the ground wire connecting ring, and the zero line connecting ring and the live wire connecting ring are separated from the corresponding elastic sheets respectively; the three-pin plug is continuously pulled out upwards to separate the plug connecting piece from the ground wire pin.

The arrangement of each electrifying assembly and the electrode mounting seat enables the three-pin plug to rotate 360 degrees when being inserted into the socket, so that the angle can be automatically adjusted when the power wire is not long enough or the plug is difficult to be inserted into the socket at a fixed angle; the ground wire contact is separated from the ground wire connecting ring, and the zero line connecting ring and the live wire connecting ring are respectively separated from the corresponding elastic sheets, so that the socket cannot conduct electricity with the power transmission line when a conductor is inserted into the jack in the power-on state of the socket, and the occurrence of electric shock accidents is avoided; the lower end of the ground wire pin of the three-pin plug is abutted against the upper end of the connecting sheet to drive the blocking assembly to move downwards, the ground wire contact is connected with the ground wire connecting ring, and the zero line connecting ring and the live wire connecting ring are respectively connected with the corresponding elastic sheets to realize the electrification of the three-pin plug; the plug connecting piece has elasticity, so that the three-pin plug can be smoothly conducted when inserted and the blocking assembly can be driven to move upwards by friction force when the plug is pulled out; the position that the seat lid lower extreme is located the jack is fixedly connected with the dust excluder, has dirt-proof effect.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic exploded view of the present invention.

Fig. 3 is a schematic structural view of the energizing assembly.

FIG. 4 is an exploded view of the energization assembly.

Fig. 5 and 6 are schematic structural views of the seat cover.

Fig. 7 is a schematic structural view of a barrier assembly.

Fig. 8 is a schematic structural view of a conductive member.

Fig. 9 is a schematic cross-sectional structure diagram of the conductive assembly.

Fig. 10 and 11 are schematic sectional structural views of the electrode mount.

10. A power-on component; 1. a seat cover; 11. a jack; 12. positioning rings; 13. a dust-proof strip; 14. positioning a plate; 2. a blocking component; 21. a limiting ring; 22. a bump; 221. a plug connecting sheet; 2211. connecting sheets; 2212. a pin clamping piece; 222. a bevel; 23. a baffle plate; 24. trepanning; 25. a sliding disk; 3. a conductive component; 31. a limiting column; 32. an elastic contact piece; 321. a ground contact; 33. a connecting cylinder; 34. a spring; 35. an elastic conductive sheet; 351. a spring plate; 352. a conductive sheet; 36. rotating the disc; 4. an electrode mount; 41. mounting the cylinder; 411. a ground wire connecting ring; 412. a zero line connecting ring; 413. a live wire connecting ring; 414. a ground wire connector; 415. a zero line connector; 416. a live wire connector; 42. positioning holes; 5. a socket housing; 51. an upper base body; 511. positioning a groove; 52. a lower seat body; 521. a positioning ring; 61. a first connecting line; 62. a second connecting line; 63. a third connecting line; 7. and (4) a power transmission line.

Detailed Description

Example 1

Referring to fig. 1 to 11, a safety receptacle according to the present embodiment includes a receptacle housing 5 and one or more power modules 10 installed in the receptacle housing 5; the socket shell 5 comprises an upper seat body 51 and a lower seat body 52; the electrifying assembly 10 comprises an electrode mounting seat 4 fixedly connected to the inner bottom surface of the lower seat body 52, a seat cover 1 rotatably connected to the upper end surface of the upper seat body 51, a conductive assembly 3 coaxially and rotatably connected to the electrode mounting seat 4 and a blocking assembly 2 slidably connected to the conductive assembly 3; two positioning holes 42 are formed in each electrode mounting seat 4; a positioning ring 521 for positioning each positioning hole 42 is formed on the inner bottom surface of the lower seat body 52; each of the electrode mounting seats 4 is positioned by each of the positioning rings 521, and can be fixed by a screw or the like, so that the electrode mounting seat 4 is fixed on the inner bottom surface of the lower seat body 52; the side wall of the seat cover 1 is formed with a positioning plate 14 for limiting the seat cover 1 in the upper seat body 51, and the upper end is formed with a jack 11 for plugging each pin of a three-pin plug; a positioning groove 511 which is rotatably connected with the positioning plate 14 is formed on the upper seat body 51; the inner wall of the electrode mounting seat 4 is provided with an annular ground wire connecting ring 411, a zero wire connecting ring 412 and a live wire connecting ring 413 which are respectively and electrically connected with a ground wire, a zero wire and a live wire along the vertical axis direction; the conductive assembly 3 comprises a rotating disc 36; the upper end of the rotating disc 36 is provided with two insulating connecting cylinders 33 for accommodating the neutral pin and the live pin of the three-pin plug; a positioning ring 12 sleeved outside the connecting cylinder 33 is formed at the lower end of the seat cover 1; the blocking assembly 2 comprises a sliding disc 25; the upper end of the sliding disk 25 is formed with a sleeve hole 24 for the connecting cylinder 33 to pass through. Through the arrangement of the electrifying component 10 and the electrode mounting seat 4, the three-pin plug can rotate 360 degrees when being inserted into the socket, so that when the length of a wire is not long enough or the three-pin plug is difficult to be inserted into the socket at a fixed angle, the three-pin plug can be inserted into the socket by rotating the electrifying component 10 to realize electrifying.

A lug 22 is formed at the upper end of the sliding disc 25; the upper end of the lug 22 is fixedly connected with a plug connecting sheet 221 which is electrically connected with a ground wire pin; the rotating disc 36 is fixedly connected with an elastic contact piece 32 below the plug connecting piece 221; an elastic conductive sheet 35 is arranged in each connecting cylinder 33; the upper end of the elastic conducting strip 35 is inwards provided with a conducting strip 352 which is bent downwards and is electrically connected with the zero wire pin or the live wire pin; a spring plate 351 which penetrates through the side wall of the connecting cylinder 33 and is electrically connected with the zero line connecting ring 412 or the live line connecting ring 413 is formed in the middle of the elastic conducting strip 35; the sliding disc 25 is provided with a baffle 23 corresponding to each spring plate 351; the rotating disc 36 is fixedly connected with a spring 34 which is positioned outside the connecting cylinder 33 and is used for supporting the blocking assembly 2. When the baffle 23 is located at the uppermost end of the stroke, the connection between the zero line connecting ring 412 and the corresponding elastic sheet 351, the connection between the live line connecting ring 413 and the corresponding elastic sheet 351 are respectively blocked, so that the two conductive sheets 352 are not electrified; when the baffle 23 is located at the lowest end of the stroke, the neutral connection ring 412 and the live connection ring 413 are respectively connected to the corresponding elastic pieces 351, and the two conductive pieces 352 are electrified.

The plug connecting piece 221 comprises a connecting piece 2211 fixedly connected to the sliding disk 25 and a pin clamping piece 2212 integrally formed on the upper part of the connecting piece 2211 and bent inwards to clamp a ground pin; a limiting column 31 is formed in the center of the rotating disc 36; a limiting ring 21 connected with the limiting column 31 in a sliding manner is formed in the center of the sliding disc 25; the elastic sheet 351 is bent upwards; the elastic contact piece 32 includes a ground contact 321 for electrical connection with the ground connection ring 411; the ground contact 321 is bent toward the ground connection ring 411; the plug connecting piece 221 has a lower end formed with an inclined surface 222 abutting against the ground contact 321. When the ground pin of the three-pin plug is inserted into the plug connecting piece 221 and abuts against the connecting piece 2211, the ground pin pushes the blocking component 2 to move downwards, so that the inclined surface 222 abuts against the ground contact 321 to bend and abuts against the ground connecting ring 411; meanwhile, the blocking assembly 2 moves downwards to the lowest end of the stroke, each elastic sheet 351 is separated from the corresponding baffle plate 23 and extends outwards, and the zero line connecting ring 412 and the live line connecting ring 413 are respectively contacted with the corresponding elastic sheet 351 to electrify the three-pin plug; when the three-pin plug is pulled out, each pin moves upwards, the sliding disc 25 is driven by the ground pin due to the friction force of the pin clip 2212 to move upwards, the spring 34 resets and pushes the blocking assembly 2 to move upwards, when the blocking assembly 2 moves to the uppermost end of the stroke, the zero line connecting ring 412 and the live line connecting ring 413 are respectively blocked by the corresponding baffle 23 again, at this time, the ground wire contact 321 returns to the initial state and is separated from the ground wire connecting ring 411, the zero line connecting ring 412 and the live line connecting ring 413 are respectively separated from the corresponding elastic sheets 351, and then the three-pin plug is powered off; the three-prong plug continues to be pulled upward to separate the plug connecting tabs 221 from the ground prong.

The socket shell 5 is provided with a power transmission line 7, and a first connecting line 61, a second connecting line 62 and a third connecting line 63 which are respectively electrically connected with a ground wire, a zero wire and a live wire of the power transmission line 7; the first connecting line 61 is connected to the ground connection ring 411; the second connecting wire 62 is connected with the neutral connecting ring 412; the third connection line 63 is connected to the live connection ring 413. The positions and structures of the ground wire connecting ring 411, the zero wire connecting ring 412 and the live wire connecting ring 413 are as follows: the electrode mounting base 4 comprises a mounting barrel 41 for fixing the ground wire connecting ring 411, the zero wire connecting ring 412 and the live wire connecting ring 413; the ground wire connecting ring 411, the zero wire connecting ring 412 and the live wire connecting ring 413 are sequentially and fixedly connected to the inner wall of the mounting cylinder 41 from bottom to top; a ground wire connector 414 electrically connected with the ground wire connecting ring 411 is fixedly connected to the lower part of the outer wall of the mounting barrel 41, a zero line connector 415 electrically connected with the zero line connecting ring 412 is fixedly connected to the middle part of the outer wall, and a live wire connector 416 electrically connected with the live wire connecting ring 413 is fixedly connected to the upper part of the outer wall; the ground wire connector 414 is electrically connected to the first connecting wire 61; the zero line connector 415 is electrically connected with the second connecting line 62; the live wire connector 416 is electrically connected with the third connection line 63; through the structure, the ground wire connecting ring 411 is connected with a ground wire, the zero line connecting ring 412 is connected with a zero line, and the live wire connecting ring 413 is connected with a live wire.

The lower end of the seat cover 1 is fixedly connected with a dustproof strip 13 at the position of the jack 11; the dust-proof strip 13 is two half bodies symmetrically arranged at two sides of the insertion hole 11, when the pin is inserted into the insertion hole 11, the two half bodies of the dust-proof strip 13 are separated towards two sides of the pin and are abutted against the pin, and dust can be prevented from entering the connecting cylinder 33.

The seat cover 1, the baffle 23, the sliding disk 25, the connecting cylinder 33, the rotating disk 36 and the electrode mounting seat 4 are made of insulating materials.

In an initial state, the spring 34 enables the blocking assembly 2 to be positioned at the uppermost end of the stroke, and the zero line connecting ring 412 and the live line connecting ring 413 are respectively blocked by the baffle 23, so that neither the zero line connecting ring 412 nor the live line connecting ring 413 is connected with the corresponding connecting cylinder 33; at this time, the ground contact 321 is separated from the ground connection ring 411, and the spring plate 351 is compressed to separate the neutral connection ring 412 and the live connection ring 413 from the corresponding spring plate 351. Before the three-pin plug is inserted, the power-on assembly 10 is adjusted to match the angle of the socket and the three-pin plug, so that the three-pin plug can be inserted into the socket.

When in use, the three-pin plug is inserted into the electrifying assembly 10, so that the ground pin is inserted into the plug connecting sheet 221, and the zero wire pin and the live wire pin are respectively connected with the corresponding conducting sheets 352; in the process of inserting the three-pin plug, the lower end of the ground pin abuts against the upper end of the connecting sheet 2211 to enable the blocking assembly 2 to move downwards, the inclined surface 222 abuts against the ground contact 321 to enable the elastic contact piece 32 to bend while the blocking assembly 2 moves downwards, the ground contact 321 moves to the outermost end and is connected with the ground connecting ring 411, meanwhile, each elastic sheet 351 is separated from the baffle 23, each elastic sheet 351 extends outwards due to the action of elastic force and abuts against the zero line connecting ring 412 and the live line connecting ring 413 respectively to enable the three-pin plug to be electrified, and at the moment, the spring 34 is compressed.

When the three-pin plug is pulled out, the three-pin plug is powered off when the lower ends of the zero wire pin and the live wire pin of the three-pin plug are separated from the conducting strips 352; meanwhile, as the plug connecting sheet 221 clamps the ground pin and the spring 34 is reset, when the three-pin plug is pulled out, the blocking assembly 2 is driven to move upwards, so that the zero line connecting ring 412 and the live line connecting ring 413 are blocked by the corresponding baffle 23 again, at this time, the ground contact 321 returns to the initial state to be separated from the ground connecting ring 411, and the zero line connecting ring 412 and the live line connecting ring 413 are separated from the corresponding elastic sheets 351 respectively; continued upward withdrawal of the three-prong plug causes the plug connecting tabs 221 to disengage from the ground prong.

The arrangement of each electrifying component 10 and the electrode mounting seat 4 enables the three-pin plug to rotate 360 degrees when being inserted into the socket, so that the angle can be automatically adjusted when the wire is not long enough or the plug is difficult to be inserted into the socket at a fixed angle; by separating the ground contact 321 from the ground connection ring 411 and separating the zero line connection ring 412 and the live line connection ring 413 from the corresponding elastic sheets 351 respectively, the socket can not conduct electricity with the power transmission line 7 when a conductor is inserted into the jack 11 in the power-on state of the socket, so that the occurrence of electric shock accidents is avoided; the lower end of the ground pin of the three-pin plug is abutted against the upper end of the connecting sheet 2211 to drive the blocking assembly 2 to move downwards, the ground contact 321 is connected with the ground connecting ring 411, and the zero line connecting ring 412 and the fire line connecting ring 413 are respectively connected with the corresponding elastic sheets 351 to realize the electrification of the three-pin plug; the plug connecting piece 221 has elasticity, so that the three-pin plug can be smoothly conducted when inserted and the blocking assembly 2 can be driven to move upwards by friction force when the plug is pulled out; the lower end of the seat cover 1 is fixedly connected with a dustproof strip 13 at the position of the jack 11, and the dustproof function is achieved.

Claims

1. A safety receptacle, characterized by: comprises a socket shell (5) and one or more electrifying assemblies (10) arranged in the socket shell (5); the socket shell (5) comprises an upper seat body (51) and a lower seat body (52); the electrifying assembly (10) comprises an electrode mounting seat (4) fixedly connected to the inner bottom surface of the lower seat body (52), a seat cover (1) rotatably connected to the upper end surface of the upper seat body (51), a conductive assembly (3) coaxially and rotatably connected to the electrode mounting seat (4) and a blocking assembly (2) slidably connected to the conductive assembly (3); the upper end of the seat cover (1) is formed with a jack (11) for plugging each pin of the three-pin plug; the inner wall of the electrode mounting seat (4) is provided with an annular ground wire connecting ring (411), a zero line connecting ring (412) and a live wire connecting ring (413) which are respectively and electrically connected with a ground wire, a zero line and a live wire along the vertical axis direction; the conductive assembly (3) comprises a rotating disc (36); the upper end of the rotating disc (36) is provided with two insulated connecting cylinders (33) for accommodating the neutral pin and the live pin of the three-pin plug; a positioning ring (12) sleeved outside the connecting cylinder (33) is formed at the lower end of the seat cover (1); the blocking assembly (2) comprises a sliding disc (25); a sleeve hole (24) for the connecting cylinder (33) to pass through is formed in the sliding disc (25);

the upper end of the sliding disc (25) is fixedly connected with a plug connecting piece (221) which is electrically connected with a ground pin; the rotating disc (36) is positioned below the plug connecting sheet (221) and is fixedly connected with an elastic contact piece (32); elastic conducting strips (35) are arranged in each connecting cylinder (33); the upper end of the elastic conducting strip (35) is inwards provided with a conducting strip (352) which is bent downwards and is electrically connected with the zero wire pin or the live wire pin; an elastic sheet (351) which penetrates through the side wall of the connecting cylinder (33) and is electrically connected with the zero line connecting ring (412) or the live wire connecting ring (413) is formed in the middle of the elastic conducting sheet (35); the sliding disc (25) is provided with a baffle (23) corresponding to each elastic sheet (351); the rotating disc (36) is positioned outside the connecting cylinder (33) and is fixedly connected with a spring (34) for supporting the blocking assembly (2); when the baffle (23) is positioned at the uppermost end of the stroke, the zero line connecting ring (412) is disconnected with the corresponding elastic sheet (351), and the live line connecting ring (413) is disconnected with the corresponding elastic sheet (351); when the baffle (23) is positioned at the lowest end of the stroke, the zero line connecting ring (412) and the live wire connecting ring (413) are respectively connected with the corresponding elastic sheets (351).

2. A safety jack as claimed in claim 1 wherein: the elastic sheet (351) is bent upwards; the elastic contact piece (32) comprises a ground contact (321) for electrically connecting with the ground connection ring (411); the ground contact (321) is bent toward the ground connection ring (411); and an inclined surface (222) which is abutted against the ground wire contact (321) is formed at the lower end of the plug connecting sheet (221).

3. A safety jack as claimed in claim 2 wherein: a limiting column (31) is formed in the center of the rotating disc (36); and a limiting ring (21) in sliding connection with the limiting column (31) is formed in the center of the sliding disc (25).

4. A safety socket according to any one of claims 1 to 3, wherein: the socket shell (5) is provided with a power transmission line (7), and a first connecting line (61), a second connecting line (62) and a third connecting line (63) which are respectively connected with a ground wire, a zero wire and a live wire of the power transmission line (7); the first connecting line (61) is connected with the ground wire connecting ring (411); the second connecting wire (62) is connected with the neutral connecting ring (412); the third connecting line (63) is connected with the live wire connecting ring (413).

5. A safety jack as claimed in claim 4 wherein: the lower end of the seat cover (1) is fixedly connected with a dustproof strip (13) at the position of the jack (11).