CN210517224U

CN210517224U - Three-pin safety socket

Info

Publication number: CN210517224U
Application number: CN201921916363.4U
Authority: CN
Inventors: 曲铭凯; 赵桂萍
Original assignee: Hangzhou Tanbu Technology Co ltd
Current assignee: Ma Jinyu
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-05-12
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a three-pin safety socket, which comprises a shell and a safety component; the safety assembly comprises an electrode mounting seat and a jack cover, wherein the electrode mounting seat is coaxially provided with a grounding electrode, a zero line electrode and a live wire electrode, and the jack cover is provided with a jack at the upper end; the lower end of the jack cover is provided with a conductive clamping piece and a movable piece; the upper end of the movable piece is rotatably connected with a movable piece which is used for blocking the connection of the conductive clamping piece with the zero line electrode and the live line electrode and is fixedly connected with a reed; the ground pin is inserted into the socket to enable the conductive clamping piece connected with the ground wire to move downwards to drive the movable piece to rotate, so that the movable piece cannot block the zero line electrode and the live wire electrode. The arrangement of the safety 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; due to the existence of the moving part, when the socket is in a power-on state, the conductor is inserted into the jack and cannot conduct electricity with the power transmission line, so that the electric shock accident is avoided.

Description

Three-pin safety socket

Technical Field

The utility model belongs to the technical field of the socket, concretely relates to tripod 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 grounding pin, a zero line 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.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: 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 safe three-pin socket with the protection function is provided.

In order to realize the purpose of the utility model, the following technical scheme is adopted to realize: comprises a shell and one or more groups of jacks for inserting plugs; safety components are arranged below each group of jacks; the safety assembly comprises a grounding electrode connected with the ground wire of the power supply line and two power supply electrodes respectively connected with the ground wire live wire or the zero wire of the power supply line.

The security component further comprises: a grounding clip corresponding to the grounding electrode for inserting a grounding pin of a plug; two power supply clamping pieces which correspond to the power supply electrodes and are used for inserting the zero line pin or the live line pin of the plug; the movable piece is arranged between the grounding clamping piece and the power supply clamping piece; the movable piece can move from an initial state position to a power-on state position along with the insertion of the grounding pin; when the movable piece is positioned at the initial state position, at least one power supply electrode is not connected with the power supply clamping piece at the corresponding position, and when the movable piece is positioned at the power-on state position, the grounding clamping piece is connected with the grounding electrode, and the power supply clamping piece is connected with the power supply electrode at the corresponding position; and a reset member that resets the movable member.

As a preferable scheme: the movable piece comprises a guide part positioned below the grounding pin and an insulating barrier body used for isolating the power supply clamping piece and the power supply electrode; the connection end of the power supply clamping piece is intersected with the projection of the power supply electrode in the vertical direction.

The movable piece moves or rotates in the vertical direction; the positions of the two power supply clamping pieces in the shell are fixed; the grounding clamping piece is positioned above the guiding part or is fixedly connected to the guiding part; when the grounding pin is inserted into the jack, the grounding clamping piece is abutted to drive the movable piece to move downwards so that the lower end of the grounding clamping piece penetrates through the guiding part to be connected with the grounding electrode, and meanwhile, the blocking body moves downwards so that the power supply clamping piece is connected with the power supply electrode.

Or the movable piece moves or rotates in the horizontal direction; the barrier is positioned between the power supply electrode and the power supply clamping piece; when the plug is inserted into the jack, the grounding pin drives the movable piece to rotate or move so that the blocking body leaves between the power supply electrode and the power supply clamping piece, and simultaneously drives the power supply clamping piece to move to be connected with the power supply electrode; when the plug is pulled out, the power supply clamping piece is reset through the friction force between the power supply clamping piece and the plug pins of the plug.

As a preferable scheme: the movable piece comprises a guide part positioned below the grounding pin and a connecting body used for connecting the power supply clamping piece and the power supply electrode; the connection end of the power supply clamping piece and the projection of the power supply electrode in the vertical direction do not intersect.

The movable piece moves up and down or rotates along the vertical direction; the positions of the two power supply clamping pieces in the shell are fixed; the grounding clamping piece is positioned above the guiding part or is fixedly connected to the guiding part; when the grounding pin is inserted into the jack, the grounding clamping piece is abutted to drive the movable piece to move downwards so that the lower end of the grounding clamping piece penetrates through the guiding part to be connected with the grounding electrode, and meanwhile, the connector moves downwards to be respectively connected with the power supply clamping piece and the power supply electrode so that the power supply clamping piece is conducted with the power supply electrode.

Or the movable piece moves or rotates in the horizontal direction; when the plug is inserted into the jack, the grounding pin drives the movable piece to rotate or move so that the connecting body is respectively connected with the power supply electrode and the power supply clamping piece; when the plug is pulled out, the power supply clamping piece is reset through the friction force between the power supply clamping piece and the plug pins of the plug.

As a preferable scheme: the reset element is not conductive or connected to the circuit.

As a preferable scheme: three guide cylinders are formed on the inner top surface of the shell corresponding to each jack; the grounding clamping piece and the two power supply clamping pieces are respectively connected in the guide cylinder in a sliding mode.

The safety assembly is positioned below each conductive clamping piece and is provided with a blocking assembly; the blocking assembly is fixed relative to the safety assembly; the movable piece is rotatably connected to the blocking component; one end of the reset piece is abutted against the movable piece, and the other end of the reset piece is abutted against the blocking component; the movable piece blocks the power supply clamping piece from being connected with the power supply electrode; the ground pin is inserted into the safety component to drive the movable piece to rotate without blocking the power supply clamping piece, and meanwhile, the ground pin is connected with the grounding electrode through the ground clamping piece.

As a preferable scheme: the movable piece moves along the up-down direction, and the grounding clamping piece is fixedly connected to the movable piece corresponding to the insertion hole of the grounding pin; the power supply clamping piece is not in contact with the movable piece; the zero wire pin, the live wire pin or the power supply clamping piece of the plug can penetrate through the movable piece to enable the power supply clamping piece to be connected with the corresponding pin; the barrier body is fixedly connected to the moving part; the power supply clamping piece and the power supply electrode are blocked by the blocking body; the moving piece drives the blocking body to move when moving and does not block the power supply clamping piece and the power supply electrode; and the power supply clamping piece is electrically connected with the power supply electrode after the barrier body moves.

As a preferable scheme: the movable piece moves along the up-down direction, and the grounding clamping piece is fixedly connected to the movable piece corresponding to the insertion hole of the grounding pin; the two power supply clamping pieces penetrate through the movable piece to be above the movable piece; the ends of the grounding electrode and the two power supply electrodes are respectively provided with a grounding contact and two power supply contacts; the lower end of the grounding clamping piece penetrates through the movable piece to form a grounding connector connected with the grounding contact; a power receiving contact is formed at the lower end of the power supply clamping piece; the power receiving contact is not connected with the power supply contact; two bridging conducting strips which are used for correspondingly connecting the two groups of power supply contacts and power receiving contacts are fixedly connected below the moving piece respectively; the reset piece is a spring and is arranged below the moving piece; in an initial state, the bridging conducting strip is not connected with the power supply contact and the power receiving contact; and after the moving piece moves downwards, the bridging conducting strip is respectively electrically connected with the power supply contact and the power receiving contact, and the grounding connector is connected with the grounding contact.

As a preferable scheme: the safety assembly is rotatably mounted within the housing; an electrode mounting seat is fixedly connected to the inner bottom surface of the shell corresponding to the lower part of each safety component; the grounding electrode and the two power supply electrodes are respectively arranged corresponding to a circle formed by the connecting end of the grounding clamping piece and the connecting end of the power supply clamping piece by taking the rotation center of the safety assembly as the center of the circle; the upper end face of the shell is positioned above each safety component and is rotatably connected with a jack cover; the jack is formed on the jack cover.

Compared with the prior art, the beneficial effects of the utility model are that: under the initial state, the guide part, the zero line stop block and the live wire stop block a ground wire hole, a zero line hole and a live wire hole respectively, and the ground wire guide pillar, the zero line guide pillar and the live wire guide pillar are located above the movable part.

When the safety device is used, the three-pin plug is inserted into the safety component, each pin of the three-pin plug is inserted into the plug connecting sheet, the lower end of each pin abuts against the conductive clamping sheet to enable the conductive clamping sheet to move downwards in the inserting process of the three-pin plug, the grounding pin of the three-pin plug pushes the ground wire guide pillar to enable the lower end of the ground wire guide pillar to abut against the inclined plane of the guide part, the ground wire guide pillar moves downwards to drive the movable part to rotate by taking the blocking piece column as an axis, the guide part moves towards the abutting block, the zero line stop block is staggered with the zero line hole, the live line; and as the three-pin plug continues to move downwards, the ground wire guide post, the zero wire guide post and the live wire guide post respectively penetrate through the ground wire hole, the zero wire hole and the live wire hole and are respectively contacted with the grounding electrode, the zero wire electrode and the live wire electrode to electrify the three-pin plug.

The plug connecting sheet clamps each pin, the conductive clamping piece is driven to move upwards when the three-pin plug is pulled out, the ground wire guide post, the zero line guide post and the live wire guide post respectively move upwards and are disengaged from the movable piece, and the three-pin plug is powered off at the moment; and then the reed is reset to push the movable piece to reset, so that the guide part, the zero line stop block and the live line stop block the ground wire hole, the zero line hole and the live wire hole again.

The arrangement of each safety component and the electrode mounting seat of the utility model enables the three-pin plug to be inserted into the socket and can rotate 360 degrees, so that the angle can be automatically adjusted when the power wire is not long enough or the three-pin plug is difficult to be inserted into the socket at a fixed angle; the movable part is arranged below each conductive clamping piece and used for blocking the ground wire guide post, the zero line guide post and the live wire guide post, so that the movable part can not conduct electricity with a power transmission line when a conductor is inserted into the jack in the power-on state of the socket, the occurrence of electric shock accidents is avoided, meanwhile, the pin corresponding to the ground wire is abutted against the conductive clamping pieces, the movable part rotates through the grounding pin of the three-pin plug in the process that the three-pin plug is inserted into the socket, and the conduction of the live wire pin and the zero line pin is realized, and the movable part can be suitable for both a common socket and a rotary socket through the structure; the side walls of the connecting rings are circumferentially provided with a grounding electrode, a zero line electrode and a live wire electrode respectively, and the grounding electrode, the zero line electrode and the live wire electrode are in contact with a ground wire guide pillar, a zero line guide pillar and a live wire guide pillar respectively so that the plug can be always kept in a power-on state; the lower end of the inner wall of the guide cylinder is formed with an anti-drop plate, and the inner wall is formed with a limiting block which can limit the stroke of the conductive clamping piece and enable the three-pin plug to be smoothly pulled out; the plug connecting piece fixedly connected with the upper end of the conductive clamping piece has elasticity, so that the three-pin plug can be smoothly conductive when inserted and can drive the conductive clamping piece to move upwards through friction force when pulled out; the three-pin plug is pulled out, and the reed and the movable piece are reset to realize power failure; the upper end of the inner wall of each guide cylinder is fixedly connected with a dustproof strip, and the dustproof effect is achieved.

Drawings

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

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

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

FIG. 4 is an exploded view of the outlet cover.

FIG. 5 is a schematic cross-sectional view of a outlet cover.

FIG. 6 is a schematic view of the outlet cover.

Fig. 7 is a schematic diagram of a structure of three conductive clips.

Fig. 8 is a schematic view of the structure of the movable member.

Fig. 9 is a schematic structural view of a barrier assembly.

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

Fig. 12 is a schematic cross-sectional structure view of the safety assembly in embodiment 2.

Fig. 13 is an exploded view of the safety assembly in embodiment 2.

Fig. 14 and 15 are schematic structural views of the movable member in embodiment 2.

Fig. 16 is a schematic view showing the positions of the power feeding clip and the power feeding contact in embodiment 2.

Fig. 17 is a schematic sectional view showing the electrode mount in embodiment 2.

Fig. 18 is an exploded view of the safety assembly in embodiment 3.

Fig. 19 is an exploded view of the safety assembly in embodiment 3.

Fig. 20 is a schematic view showing the position of the power feeding clip in embodiment 3.

11. A jack cover; 111. a guide cylinder; 1111. an anti-drop plate; 1112. a slide bar; 1113. a limiting block; 112. positioning a plate; 113. a jack; 1131. a dust-proof strip; 115. rotating the column; 1151. a support ring; 1152. a limiting hole; 12. a conductive clip; 12a, a grounding clip; 12a1, ground connector; 12b, a zero line clamping piece; 12c, a live wire clip; 12d, a power receiving contact; 121a, a ground wire guide post; 12a1, ground connector; 121b, a neutral wire guide post; 121c, a live wire guide post; 124. a sliding groove; 125. a plug connecting sheet; 10. a security component; 2. a blocking component; 21. a movable member; 211. a guide section; 2111. a bevel; 212. a barrier; 2121. a zero line stop block; 2122. a live wire stop block; 213. a clip hole; 214. a catch hole; 215. bridging the conductive sheets; 22. a ground wire hole; 23. a zero line hole; 24. a fire wire hole; 25. a catch column; 26. a reed; 27. a resisting block; 28. rotating the hole; 3. an electrode mount; 31. a ground electrode; 311. a ground contact; 32. a zero line electrode; 321. a zero line connecting sheet; 33. a live electrode; 331. a live wire connecting sheet; 34. a connecting ring; 341. a first separation tank; 342. a second separation tank; 343. a third separation tank; 344. a ground wire through hole; 35. positioning holes; 36. a limiting column; 37. a ring electrode; 30. a power supply contact; 4. a housing; 41. an upper base body; 411. positioning a groove; 42. a lower seat body; 421. a positioning ring; 51. a first connecting line; 52. a second connecting line; 53. a third connecting line; 6. and (4) a power transmission line.

Detailed Description

Example 1

Referring to fig. 1 to 11, a three-pin safety socket according to the present embodiment includes a housing 4 and one or more safety assemblies 10 mounted in the housing 4; the housing 4 comprises an upper seat body 41 and a lower seat body 42; the safety assembly 10 comprises an electrode mounting base 3 fixedly connected to the inner bottom surface of the lower seat body 42 and a jack cover 11 rotatably connected to the upper end surface of the upper seat body 41; the electrode mounting base 3 is formed with a positioning hole 35; a positioning ring 421 for positioning each positioning hole 35 is formed on the inner bottom surface of the lower seat body 42; the upper end of the jack cover 11 is formed with jacks 113 for plugging pins of a three-pin plug; the electrode mounting base 3 is coaxially provided with an annular grounding electrode 31, a zero line electrode 32 and a live wire electrode 33 which are respectively connected with a ground wire, a zero line and a live wire; a power supply electrode for supplying power to an electric appliance is arranged between the zero line electrode 32 and the live line electrode 33; three guide cylinders 111 are formed at the lower end of the jack cover 11 corresponding to each jack 113; three conductive clips 12 for connecting the ground electrode 31, the zero line electrode 32 and the live line electrode 33 are installed in the guide cylinder 111; each of the conductive clips 12 is slidably connected in the guide cylinder 111. The safety component 10 and the electrode mounting seat 3 are arranged to enable the three-pin plug to be inserted into the socket in a 360-degree rotation mode, so that the three-pin plug can be inserted into the socket to be electrified when the wire is not long enough or the three-pin plug is difficult to insert into the socket at a fixed angle.

The lower end of the jack cover 11 is positioned below each conductive clamping piece 12 and is provided with a blocking component 2 which rotates synchronously with the jack cover 11; the upper end of the blocking component 2 is rotatably connected with a movable piece 21; a spring 26 with one end abutting against the movable member 21 is fixedly connected to the upper end of the blocking component 2; the movable piece 21 blocks each conductive clip 12 from being connected with the zero line electrode 32 and the live line electrode 33; the ground pin on the three-pin plug is inserted into the socket to move the conductive clip 12 connected with the ground wire downwards to drive the movable member 21 to rotate, so that the movable member 21 cannot block the zero wire electrode 32 and the live wire electrode 33. The movable piece 21 is arranged below each conductive clamping piece 12, so that in the power-on state of the socket, when a conductor is singly or simultaneously inserted into the jack 113 corresponding to the zero line or the live line, the conductor cannot conduct electricity, the occurrence of electric shock accidents is avoided, meanwhile, the ground pin is abutted against the conductive clamping piece 12, and the movable piece 21 is driven to rotate by the ground pin of the three-pin plug in the process that the three-pin plug is inserted into the socket, so that the live line pin and the zero line pin are conducted.

Three connecting rings 34 for fixing the grounding electrode 31, the zero line electrode 32 and the live wire electrode 33 are formed at the upper end of the electrode mounting base 3; a plug connecting piece 125 for clamping a plug pin is fixedly connected to the upper end of each conductive clamping piece 12; the conductive clamping pieces 12 connected with the grounding electrode 31 and the two power supply electrodes are respectively marked as a grounding clamping piece 12a and two power supply clamping pieces; the two power supply clamping pieces are a zero line clamping piece 12b and a live line clamping piece 12c respectively; the three-pin socket supplies power to electrical appliances through voltage generated between the zero line clamping piece 12b and the live line clamping piece 12c, and the two electrodes are connected in a reverse mode under the condition that some individuals automatically connect electricity, so that the zero line clamping piece 12b and the live line clamping piece 12c are arranged in parallel.

The lower end of the grounding clip 12a is fixedly connected with a ground wire guide post 121 a; the lower end of the zero line clamping piece 12b is fixedly connected with a zero line guide post 121 b; the lower end of the live wire clamping piece 12c is fixedly connected with a live wire guide post 121 c; the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c are connecting ends of the grounding clamping piece 12a, the zero wire clamping piece 12b and the live wire clamping piece 12c, which are used for being connected with corresponding power supply electrodes; the connection end of the power supply clamping piece is intersected with the projection of the power supply electrode in the vertical direction, namely the zero wire guide post 121b and the live wire guide post 121c can respectively abut against the zero wire electrode 32 and the live wire electrode 33 after moving downwards; the distances from the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c to the safety component 10 are unequal and do not interfere with each other, that is, the ground wire guide post 121a is only connected with the ground electrode 31, the zero wire guide post 121b is only connected with the zero wire electrode 32, and the live wire guide post 121c is only connected with the live wire electrode 33, so as to prevent the circuit from generating interference and short circuit; the ground wire guide post 121a, the neutral wire guide post 121b and the live wire guide post 121c are respectively connected to the corresponding plug connecting piece 125, that is, the plug connecting piece 125 on the grounding clip 12a is connected to the ground wire guide post 121a, the plug connecting piece 125 on the neutral wire clip 12b is connected to the neutral wire guide post 121b, and the plug connecting piece 125 on the live wire clip 12c is connected to the live wire guide post 121 c; the plug connecting piece 125 has elasticity, and can clamp each pin tightly when the three-pin plug is inserted into the socket, so that the three-pin plug can be conducted with the grounding electrode 31, the zero line electrode 32 and the live line electrode 33 when inserted and can conduct electricity smoothly, and the three-pin plug can drive the conductive clamping piece 12 to move upwards through friction force when pulled out.

A resisting block 27 fixedly connected with the other end of the reed 26 is formed at the upper end of the blocking component 2; a separation blade column 25 is formed at the upper end of the blocking component 2; a baffle plate hole 214 is formed in the movable piece 21; the baffle column 25 is rotatably connected with the baffle hole 214; the blocking component 2 is positioned under the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c, and is respectively formed with a ground wire hole 22, a zero wire hole 23 and a live wire hole 24; the movable body 21 includes a guide portion 211 and an insulating barrier 212; the blocking body 212 comprises a neutral line block 2121 and a live line block 2122; the guide part 211, the neutral wire block 2121 and the live wire block 2122 correspond to the ground wire hole 22, the neutral wire hole 23 and the live wire hole 24, respectively; the distance between the guiding portion 211 and the flap hole 214 (denoted as L1) is smaller than the distance between the neutral line stop 2121 and the flap hole 214 (denoted as L2) or the distance between the live line stop 2122 and the flap hole 214 (denoted as L3), i.e., L1< L2, L1< L3; further, 2L1< L2, 2L1< L3; a slope 2111 facing the ground wire guide post 121a is formed at the upper end of the guide portion 211; when the ground wire guide post 121a abuts against the guide portion 211, a distance between a lower end of the zero wire guide post 121b and the zero wire stopper 2121 and a distance between a lower end of the live wire guide post 121c and the live wire stopper 2122 are greater than a thickness of the guide portion 211; the grounding pin of the three-pin plug pushes the corresponding conductive clip 12 to make the lower end of the grounding wire guide post 121a abut against the inclined surface 2111 of the guiding portion 211, at this time, the grounding wire guide post 121a moves down to drive the movable member 21 to rotate around the catch post 25, so that the guiding portion 211 moves towards the abutting block 27, the zero line stopper 2121 is staggered with the zero line hole 23, the live line stopper 2122 is staggered with the live line hole 24, and at this time, the spring 26 is compressed; as the three-pin plug moves down, the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c pass through the ground wire hole 22, the zero wire hole 23 and the live wire hole 24, and contact the ground electrode 31, the zero wire electrode 32 and the live wire electrode 33, respectively, so as to energize the three-pin plug.

Further, the spring 26 may be other restoring members such as a spring, rubber, magnet, etc.

A sliding strip 1112 is formed on the inner wall of the guide cylinder 111 in the vertical direction; each conductive clip 12 is formed with a sliding groove 124 on a side wall thereof, which is slidably connected with the sliding bar 1112; a positioning plate 112 is formed on the side wall of the upper part of the jack cover 11; a positioning slot 411 rotatably connected with the positioning plate 112 is formed on the upper seat body 41; a non-cylindrical rotating column 115 is formed at the center of the lower end of the jack cover 11; the blocking component 2 is centrally formed with a rotating hole 28 which is slidably connected with the rotating column 115; a support ring 1151 for supporting the blocking assembly 2 is formed at the lower part of the side wall of the rotating column 115; a limiting hole 1152 is formed at the lower end of the rotating column 115; and a limiting column 36 inserted into the limiting hole 1152 is formed in the center of the upper end of the bottom surface of the electrode mounting seat 3. The rotating column 115 with a non-cylindrical shape is slidably connected with the rotating hole 28, so that the plugging cover 11 can drive the blocking component 2 to rotate synchronously when rotating; the position of the blocking assembly 2 can be limited by inserting the limiting posts 36 into the limiting holes 1152, vertically installing the outlet cover 11 on the upper seat 41, fixedly connecting the electrode installation seat 3 to the inner bottom surface of the lower seat 42, and using the supporting ring 1151.

A power transmission line 6, and a first connecting line 51, a second connecting line 52 and a third connecting line 53 which are respectively connected with a ground wire, a zero wire and a live wire of the power transmission line 6 are mounted on the housing 4; the first connecting line 51 is connected to the ground electrode 31; the second connecting wire 52 is connected with the neutral electrode 32; the third connection line 53 is connected to the live electrode 33; the concrete structure is as follows: the grounding electrode 31, the zero line electrode 32 and the live line electrode 33 are distributed from outside to inside in sequence; a zero line connecting piece 321 connected with the zero line electrode 32 and a live line connecting piece 331 connected with the live line electrode 33 are fixedly connected to the electrode mounting base 3; the outermost and the lower part of the connecting ring 34 in the middle are formed with a third separating groove 343 and a second separating groove 342 for the live wire connecting piece 331 to pass through; a first separation groove 341 for the neutral connecting piece 321 to pass through is formed on one side of the outermost connecting ring 34 different from the second separation groove 342; the outer wall of the outermost connecting ring 34 is formed with a ground wire through hole 344; the zero line connecting piece 321 is not contacted with the outermost connecting ring 34, and the live line connecting piece 331 is not contacted with the outermost and middle connecting rings 34; through the structure, the grounding electrode 31 is connected with the ground wire, the zero line electrode 32 is connected with the zero line, and the live wire electrode 33 is connected with the live wire.

The upper end of the inner wall of each guide cylinder 111 is fixedly connected with a dust strip 1131; the dust-proof strip 1131 is two half bodies symmetrically arranged at two sides of the insertion hole 113, and when the pin is inserted into the insertion hole 113, the two half bodies of the dust-proof strip 1131 are separated towards two sides of the pin and abut against the pin, so that dust can be prevented from entering the guide cylinder 111.

The lower end of the inner wall of the guide cylinder 111 is formed with an anti-drop plate 1111, and the upper part of the inner wall is formed with a limiting block 1113 which can limit the stroke of the conductive clip 12 and enable the conductive clip 12 to be separated from the pins when the three-pin plug is pulled out upwards.

The length of the grounding pin in the national standard is larger than the length of the live wire pin and the zero wire pin, and the thickness of each conductive clip 12 can be correspondingly adjusted.

Further, the utility model discloses when getting rid of rotatory function, only need get rid of electrode mount pad 3, jack 113 is seted up at the up end of casing 4, and telluric electricity field 31 fixed mounting in the below of ground connection clamping piece 12a, and power supply electrode fixed mounting can in the below of power supply clamping piece.

Further, in the present embodiment, the rotation of the movable element 21 may be realized by sliding instead.

In the initial state, the guide portion 211, the neutral stopper 2121, and the live stopper 2122 block the ground wire hole 22, the neutral hole 23, and the live wire hole 24, respectively, and the ground wire guide post 121a, the neutral wire guide post 121b, and the live wire guide post 121c are positioned above the movable element 21.

When the plug safety assembly 10 is used, each pin of the plug is inserted into the plug connecting sheet 125, the lower end of each pin abuts against the conductive clamping sheet 12 in the plug inserting process to enable the conductive clamping sheet 12 to move downwards, the grounding pin of the three-pin plug pushes the grounding wire guide post 121a to enable the lower end of the grounding wire guide post to abut against the inclined surface 2111 of the guide part 211, at the moment, the grounding wire guide post 121a moves downwards to drive the movable part 21 to rotate by taking the barrier post 25 as an axis, so that the guide part 211 moves towards the abutting block 27, the zero line stop 2121 is staggered with the zero line hole 23, the live line stop 2122 is staggered with the live line hole 24, and at; as the plug continues to move downward, the ground, neutral and

live wire posts

121a, 121b, 121c pass through the ground, neutral and

live holes

22, 23, 24, respectively, and contact the ground, neutral and

live electrodes

31, 32, 33, respectively, to energize the plug.

Because the plug connecting sheet 125 clamps each pin, the conductive clip 12 is driven to move upwards when the plug is pulled out, the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c respectively move upwards and are disengaged from the movable piece 21, and the plug is powered off; the reed 26 is then reset to push the movable member 21 to reset, so that the guide portion 211, the neutral block 2121 and the live block 2122 re-block the ground wire hole 22, the neutral hole 23 and the live wire hole 24.

The arrangement of each safety assembly 10 and the protective cover 3 of the utility model enables the plug to be inserted into the socket to rotate 360 degrees, so that the angle can be adjusted automatically when the power wire is not long enough or the plug is difficult to be inserted into the socket at a fixed angle; the movable piece 21 which is arranged below each conductive clamping piece 12 and used for blocking the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c ensures that a conductor is not electrically conducted with the power transmission line 6 when being independently inserted into one second jack 114 or simultaneously inserted into two second jacks 114 in the power-on state of the socket, thereby avoiding the occurrence of electric shock accidents, meanwhile, pins corresponding to the ground wire are abutted against the conductive clamping pieces 12, the movable piece 21 is controlled to rotate by the grounding pin of the plug in the process of inserting the plug into the socket to realize the conduction of the live wire pin and the zero wire pin, and the structure can be suitable for common sockets and also can be suitable for rotary sockets; the grounding electrode 31, the zero wire electrode 32 and the live wire electrode 33 are respectively arranged on the side walls of the connecting rings 34 in the circumferential direction and are respectively contacted with the ground wire guide post 121a, the zero wire guide post 121b and the live wire guide post 121c, so that the plug can be always kept in a power-on state; an anti-falling plate 1111 is formed at the lower end of the inner wall of the guide cylinder 111, and a limiting block 1113 is formed on the inner wall, so that the stroke of the conductive clamping piece 12 can be limited, and the plug can be smoothly pulled out; the plug connecting piece 125 fixedly connected with the upper end of the conductive clip 12 has elasticity, so that the plug can be smoothly conducted when being inserted and the conductive clip 12 can be driven to move upwards by friction force when being pulled out; the power failure is realized by the reset of the reed 26 and the movable piece 21 through the plug pull-out; the upper end of the inner wall of each guide cylinder 111 is fixedly connected with a dustproof strip 1131, which has a dustproof function.

Example 2

As shown in fig. 12 to 17, this embodiment is modified from embodiment 1 as follows: the movable piece 21 moves along the up-down direction, and the ground clamping piece 12a is fixedly connected to the movable piece 21 corresponding to the insertion hole of the ground pin; the two power supply clamping pieces (a zero line clamping piece 12b and a live line clamping piece 12 c) penetrate through the movable piece to the upper part of the movable piece 21; the ends of the grounding electrode 31 and the two power supply electrodes are respectively provided with a grounding contact 311 and two power supply contacts 30; the lower end of the grounding clip 12a penetrates through the movable piece 21 to form a grounding connector 12a1 connected with the grounding contact 311; a power receiving contact 12d is formed at the lower end of the power supply clamping piece; the power receiving contact 12d is not connected to the power feeding contact 30; two bridging conductive sheets 215 for respectively and correspondingly connecting the two sets of power supply contacts 30 and power receiving contacts 12d are fixedly connected below the movable member 21; the reset piece is a spring and is arranged below the movable piece 21; in the initial state, the bridging conductive sheet 215 is not connected to the power supply contact 30 and the power receiving contact 12 d; after the movable member 21 moves down, the bridging conductive sheet 215 is electrically connected to the power supply contact 30 and the power receiving contact 12d, respectively, and the ground connector 12a1 is connected to the ground contact 311.

Two clip holes 213 for passing the power supply clip are formed on the movable member 21.

The spring is not connected with the power supply electrode, the grounding electrode, the power supply clamping piece, the grounding clamping piece, the power receiving contact, the power supply contact, the grounding contact or the grounding connector; i.e. the spring is not connected to the circuit.

Further, in order to prevent the spring from contacting the circuit in the deformation process, the spring is an insulator.

Further, the moving manner of the movable element 21 may be other forms such as rotation or spiral rotation.

Further, when the present embodiment is used in a rotary socket, the safety assembly 10 is mounted with the corresponding electrode mounting seat 3 below in combination with embodiment 1; the safety assembly 10 is rotatably connected to the electrode mounting base 3; the electrode mounting base 3 is provided with three annular electrodes 37 which are respectively and electrically connected with the grounding electrode 31 and the two power supply electrodes; the ring electrode 37 is electrically connected to a power supply.

When any single object is inserted into the jack and connected to the power supply clip, the power supply contact and the power receiving contact are not connected, the object cannot be connected with the power supply electrode, and the function of conducting electricity can be realized when the plug is inserted.

Example 3

As shown in fig. 18 to 20, this embodiment is modified from embodiment 1 or 2 as follows: the movable piece 21 moves along the up-down direction, and the ground clamping piece 12a is fixedly connected to the movable piece 21 corresponding to the insertion hole of the ground pin; the power supply clip is not in contact with the movable piece 21; the neutral pin, the live pin or the power supply clip of the plug can pass through the movable piece 21 to connect the power supply clips (the neutral clip 12b and the live clip 12 c) with the corresponding pins; the barrier 212 is fixedly connected to the movable piece 21; the power supply clip and the power supply electrode are blocked by the blocking body 212; when the movable piece 21 moves, the barrier body 212 is driven to move without blocking the power supply clamping piece and the power supply electrode; after the barrier 212 is moved, the power supply clip is electrically connected to the power supply electrode.

In this embodiment, the power feeding clip and the power feeding electrode are electrically connected when they are not blocked by the blocking body 212, i.e. the power feeding clip or the power feeding electrode is elastic; namely, the connection end of the power supply clamping piece is intersected with the projection of the power supply electrode in the vertical direction.

Further, the moving mode of the movable element 21 may be other modes such as rotation or spiral rotation, and the moving mode of the blocking body 212 may be other modes such as rotation.

Further, the power supply clip may be slidably connected to the inner bottom surface of the housing or other installation forms, so that the power supply clip and the power supply electrode can be connected after the moving member 21 is displaced. If an inclined block is arranged below the movable piece 21, a column head abutting against the inclined block is arranged on the power supply clamping piece, the movable piece 21 moves downwards to enable the inclined block to abut against the column head to enable the power supply clamping piece to move to enable the power supply clamping piece to be connected with a power supply electrode, and the movable piece 21 resets to enable the power supply clamping piece to reset.

In the embodiment, when any single object is inserted into the jack and connected to the power supply clip, the power supply clip and the power supply electrode are blocked by the blocking body 212, so that the object cannot be connected with the power supply electrode, and the function of conducting electricity can still be realized when the plug is inserted.

Example 4

The present embodiment is improved based on the above embodiments as follows: the neutral wire clip 12b and the neutral wire electrode 32 in this embodiment are electrically connected at all times; in the initial state, the live wire clip 12c is disconnected from the live electrode 33, and the moving member 21 is displaced to electrically connect the live wire clip 12c to the live electrode 33.

Claims

1. A three-pin safety socket comprises a shell and one or more groups of jacks for inserting plugs; safety components are arranged below each group of jacks; the safety assembly comprises a grounding electrode connected with a grounding wire of the power supply wire and two power supply electrodes respectively connected with a grounding wire or a zero wire of the power supply wire; the method is characterized in that:

the security component further comprises:

a grounding clip corresponding to the grounding electrode for inserting a grounding pin of a plug;

two power supply clamping pieces which correspond to the power supply electrodes and are used for inserting the zero line pin or the live line pin of the plug;

the movable piece is arranged between the grounding clamping piece and the power supply clamping piece; the movable piece can move from an initial state position to a power-on state position along with the insertion of the grounding pin; when the movable piece is positioned at the initial state position, at least one power supply electrode is not connected with the power supply clamping piece at the corresponding position, and when the movable piece is positioned at the power-on state position, the grounding clamping piece is connected with the grounding electrode, and the power supply clamping piece is connected with the power supply electrode at the corresponding position; and

and a reset member for resetting the movable member.

2. A three-prong safety socket as claimed in claim 1, wherein: the movable piece comprises a guide part positioned below the grounding pin and an insulating barrier body used for isolating the power supply clamping piece and the power supply electrode; the connection end of the power supply clamping piece is intersected with the projection of the power supply electrode in the vertical direction;

the movable piece moves or rotates in the vertical direction; the positions of the two power supply clamping pieces in the shell are fixed; the grounding clamping piece is positioned above the guiding part or is fixedly connected to the guiding part; when the grounding pin is inserted into the jack, the grounding pin abuts against the grounding clamping piece to drive the movable piece to move downwards so that the lower end of the grounding clamping piece penetrates through the guiding part to be connected with the grounding electrode, and meanwhile, the blocking body moves downwards so that the power supply clamping piece is connected with the power supply electrode;

3. A three-prong safety socket as claimed in claim 1, wherein: the movable piece comprises a guide part positioned below the grounding pin and a connecting body used for connecting the power supply clamping piece and the power supply electrode; the connection end of the power supply clamping piece and the projection of the power supply electrode in the vertical direction do not intersect;

the movable piece moves up and down or rotates along the vertical direction; the positions of the two power supply clamping pieces in the shell are fixed; the grounding clamping piece is positioned above the guiding part or is fixedly connected to the guiding part; when the grounding pin is inserted into the jack, the grounding pin abuts against the grounding clamping piece to drive the movable piece to move downwards so that the lower end of the grounding clamping piece penetrates through the guiding part to be connected with the grounding electrode, and meanwhile, the connector moves downwards to be respectively connected with the power supply clamping piece and the power supply electrode so that the power supply clamping piece is conducted with the power supply electrode;

4. A three-prong safety socket as claimed in claim 2 or 3, wherein: the reset element is not conductive or connected to the circuit.

5. A three-prong safety socket as claimed in claim 2, wherein: three guide cylinders are formed on the inner top surface of the shell corresponding to each jack; the grounding clamping piece and the two power supply clamping pieces are respectively connected in the guide cylinder in a sliding manner;

the safety component is positioned below the grounding clamping piece and the power supply clamping piece and is provided with a blocking component; the blocking assembly is fixed relative to the safety assembly; the movable piece is rotatably connected to the blocking component; one end of the reset piece is abutted against the movable piece, and the other end of the reset piece is abutted against the blocking component; the movable piece blocks the power supply clamping piece from being connected with the power supply electrode; the ground pin is inserted into the safety component to drive the movable piece to rotate without blocking the power supply clamping piece, and meanwhile, the ground pin is connected with the grounding electrode through the ground clamping piece.

6. A three-prong safety socket as claimed in claim 2, wherein: the movable piece moves along the up-down direction, and the grounding clamping piece is fixedly connected to the movable piece corresponding to the insertion hole of the grounding pin; the power supply clamping piece is not in contact with the movable piece; the zero wire pin, the live wire pin or the power supply clamping piece of the plug can penetrate through the movable piece to enable the power supply clamping piece to be connected with the corresponding pin; the barrier body is fixedly connected to the moving part; the power supply clamping piece and the power supply electrode are blocked by the blocking body; the moving piece drives the blocking body to move when moving and does not block the power supply clamping piece and the power supply electrode; and the power supply clamping piece is electrically connected with the power supply electrode after the barrier body moves.

7. A three-prong safety socket as claimed in claim 3, wherein: the movable piece moves along the up-down direction, and the grounding clamping piece is fixedly connected to the movable piece corresponding to the insertion hole of the grounding pin; the two power supply clamping pieces penetrate through the movable piece to be above the movable piece; the ends of the grounding electrode and the two power supply electrodes are respectively provided with a grounding contact and two power supply contacts; the lower end of the grounding clamping piece penetrates through the movable piece to form a grounding connector connected with the grounding contact; a power receiving contact is formed at the lower end of the power supply clamping piece; the power receiving contact is not connected with the power supply contact; two bridging conducting strips which are used for correspondingly connecting the two groups of power supply contacts and power receiving contacts are fixedly connected below the moving piece respectively; the reset piece is a spring and is arranged below the moving piece; in an initial state, the bridging conducting strip is not connected with the power supply contact and the power receiving contact; and after the moving piece moves downwards, the bridging conducting strip is respectively electrically connected with the power supply contact and the power receiving contact, and the grounding connector is connected with the grounding contact.

8. A three-prong safety socket as claimed in claim 2 or 3, wherein: the safety assembly is rotatably mounted within the housing; an electrode mounting seat is fixedly connected to the inner bottom surface of the shell corresponding to the lower part of each safety component; the grounding electrode and the two power supply electrodes are respectively arranged corresponding to a circle formed by the connecting end of the grounding clamping piece and the connecting end of the power supply clamping piece by taking the rotation center of the safety assembly as the center of the circle; the upper end face of the shell is positioned above each safety component and is rotatably connected with a jack cover; the jack is formed on the jack cover.