CN103247923A

CN103247923A - Secure socket

Info

Publication number: CN103247923A
Application number: CN2013100885195A
Authority: CN
Inventors: 孙立峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-08-14
Anticipated expiration: 2033-03-19
Also published as: CN103247923B

Abstract

The invention discloses a secure socket which comprises a housing and a power cord, wherein a slot is formed in the housing and allows a zero line pin and a live line pin of a plug to be inserted into; an external guide and an internal guide are arranged beside the slot; the internal guide is positioned between the external guide and the slot; the external guide is connected with the power cord; and a pushing device is arranged on the housing, is controlled by the plug in plug-in connection with the secure socket, and can push the external guide and the internal guide to be conducted. When the secure socket is in non power utilization state, the external guide and the internal guide keep enough distance, the socket circuit cannot be conducted, without the match of the pushing device, and only when the secure socket is in normal power utilization state, after the pushing device is pressed by the plug, the pins of the plug and the pushing device push the internal guide and the external guide to move in the opposite directions respectively to conduct the plug circuit. Therefore, the electric shock accident happening possibility is reduced greatly, and the safety of the secure socket can be improved greatly.

Description

A kind of safety socket

Technical field

The present invention relates to a kind of electrical connection, in particular, it relates to a kind of safety socket.

Background technology

Socket is indispensable electric device in modern work and the life, can take electric energy easily and safely for people from utility network in various electricity consumptions place by socket.But the at present common most security protection performance of socket is lower, for for the children of complete ignorant aspect the Electrical Safety, having very big potential safety hazard, in case the hand-held conducting objects of children is inserted outlet slots and just electric shock accidents may be taken place, therefore, conventional socket is carried out structural improvement, it is very necessary making it to be difficult for outwards transmission of electricity under improper electricity consumption situation, can improve the security protection performance of socket like this, guarantees especially children's personal safety of personnel.Also there are at present many known innovative technologies maybe will be applied, improved or be expected to improve the safety in utilization of socket.It is the safety return circuit device that the invention of CN1812209A discloses a kind of socket on August 2nd, 2006 as publication number, it includes a housing, this housing is provided with power supply slot, this power supply slot has the two hole slots that the charger plug inserts, be equipped with power line on this housing, be provided with the loop of conducting electric current between this power supply slot and this power line, this loop includes a cross-over connection loop and some touch-controls loop, this cross-over connection loop is located between this two jack base, this cross-over connection loop has two inputs and two transmission ends, this input and transmission ends are located at the respectively both sides of this jack base relatively, and this two jack base does not constitute the conducting loop between the adjacent input of homonymy and the transmission ends; This touch-control loop is located between this two jack base and this cross-over connection loop, and touch-control is arranged in this two input, two transmission ends.Above-mentioned safety socket really has the function that prevents improper electric shock, but following deficiency is also arranged:

1. poor structure.This loop comprises 4 touch-control loops, has 4 pairs of contacts, and more contact has increased the complexity of system in the loop, reduced its reliability, and in long-term use, contact meeting oxidation deterioration, its contact resistance can increase, and then increases the caloric value in whole loop, and socket is damaged too early.In order to alleviate the adverse effect than multiconductor, tend on the contact the silver-colored rivet of silver-plated or direct use contact during manufacturing to improve resistant to rust and arc resistant ability, this will obviously increase the cost of product undoubtedly.

2. use metal material too much.This safety return circuit needs the cross-over connection loop, the cross-over connection loop is striden sheet by two and is constituted, this two jumper is cross-placed between this two jack base in the mode of intersecting, because the jack of each electrical appliance plug correspondence all needs to have two long jumpers, this can increase the cost of whole socket again.Consider society to the huge demand of socket, though the limited increase metal consumption of single socket, but the accumulation total amount also is quite surprising.

3. the easy initiation potential in cross-over connection loop.Long loop can increase the whole caloric value of socket, and this will reduce the fail safe of socket.Socket is after long-term the use in addition, and unavoidable dust impurity enters, and dust very easily makes the short circuit of cross-over connection loop, causes dangerous the generation.This problem is particularly outstanding in occasions such as the more workshop of dust, building sites.

4. when inserting simultaneously with the similar foreign matter of the pin size of standard plug with two, still can cause the generation of the situation of getting an electric shock.

Summary of the invention

In order to overcome existing most socket secure barrier propterty deficiencies, there is the defective of electric shock hidden danger under the improper electricity consumption situation, the invention provides a kind of reasonable safeguard structure that has, safe and reliable safety socket.

Technical scheme of the present invention is: a kind of safety socket, comprise housing and power line, housing is provided with the slot for plug zero line pin and the insertion of live wire pin, other outer lead member and the interior guiding element of being provided with of slot, interior guiding element is between outer lead member and slot, outer lead member links to each other with power line, also is provided with the pressing device that is subjected to control, can promote with the plug of safety receptacle accepts outer lead member and interior guiding element conducting on the housing.Described pressing device is subjected to the control that presses with the plug of safety receptacle accepts, along with work is carried out in the insertion of plug synchronously.When the safety socket was unloaded, outer lead member separated with interior guiding element.When plug inserted, guiding element was close to outer lead member in the pin of plug was pushed, and the plug plane promotes pressing device simultaneously, make the inside guiding element of outer lead member close, outer lead member, interior guiding element are mobile in opposite directions, and final interior guiding element contacts with outer lead member, and then set up with power line and to be electrically connected, the pin of plug is switched on.Non-spacing with outer lead member under the electricity condition and interior guiding element is bigger, namely uses the similar conducting objects of size and plug base pin to insert slot, and conducting objects is pushed interior guiding element to the outer lead member direction, and is also still not enough so that interior guiding element and outer lead member conducting.Equally, if ought only press pressing device, though that pressing device can promote the inside guiding element of outer lead member is close, do not have the pin of plug promote in guiding element cooperate also not enough so that interior guiding element and outer lead member conducting.

As preferably, move plate and push rod but described pressing device comprises pressing of elastic reset, press and move plate and be slidingly connected on the described housing, press and move plate and be connected with push rod, be provided with between push rod and outer lead member can promote outer lead member rely in the crowded selection structure of guiding element.Press and move plate and can move along a fixed path, drive push rod.Press and press when moving plate, external force can be moved plate and is delivered to push rod through pressing, and then promotes outer lead member by squeezing selection structure.

As preferably, described crowded selection structure comprises the pushing inclined-plane of being located on the push rod, and is located at the curved surface on the outer lead member, and this curved surface is towards a side projection of push rod.Inclined-plane or curved surface can decompose the power on the direction on other direction, therefore move plate when depressing to press, and when the pushing inclined-plane contacted with curved surface, it was close to produce the inside guiding element of cross component force promotion outer lead member.

As preferably, outer lead member is spring leaf, and outer lead member one end is fixed on the housing, the both sides of push rod and interior guiding element separation outer lead member.Making conductive devices with spring leaf, is the conventional processing method of electrician trade, and material is easy to get, and need not special processing, is beneficial to the control production cost.Good crooked deformation and restorability because of spring leaf, the outer lead member free end can inwardly guiding element be close under push rod promotes, for the connection of outer lead member and interior guiding element and even the circuit turn-on between socket and plug create conditions, and extract the back outer lead member at plug and return to original position voluntarily, keep the safe spacing between outer lead member and interior guiding element.If there are children in arbitrary slot or whole slot, to insert the conducting objects similar with the plug base pin size out of curiosity, but do not move plate as long as do not press to press, push rod just can not promote outer lead member all the time near interior guiding element, remain a segment distance between interior guiding element and outer lead member, thereby be in off-state, electricity can't be transferred on the pin, therefore can guarantee can not get an electric shock.

As an alternative, outer lead member is rigid metal sheet, enclosure interior is installed with the outer lead member support, the middle part of outer lead member is rotatably connected on the outer lead member support, the top of outer lead member links to each other with an end of a tensioning spring, the other end of tensioning spring links to each other with the outer lead member support, and push rod is between outer lead member and the interior guiding element.Outer lead member adopts lever construction herein, moves plate and is pressed into by the plug plane along with pressing, and an end of push rod pushing sheet metal is away from interior guiding element, the sheet metal portion of being dynamically connected that rotates rotates, the other end of sheet metal will be near interior guiding element, and after push rod promoted enough distances, sheet metal just contacted conducting with interior guiding element.When pulling the plug out of the socket, sheet metal is homing under the effect of tensioning spring then, and outer lead member and interior guiding element disengage again.Required thrust was less when the outer lead member of this kind form was pushed.

As preferably, the safety socket comprises also and can stop to press and move backing pin and the back-moving spring that plate moves that backing pin is slidingly connected on the described housing and the backing pin head is exposed to outside the housing, and back-moving spring is fixedly arranged on enclosure interior and links to each other with backing pin.The backing pin slip is to pressing on the mobile route that moves plate, stop and press the movement that moves plate, make push rod can't promote outer lead member, thereby keep the disengaged position between outer lead member and interior guiding element, releasing moves resilience force that stopping of plate must overcome back-moving spring and pushes backing pin aside with hand and keep pressing, could insert plug on this basis, and then depress again to press and move plate ability conducting loop.If plug also is not inserted into the position, in case loose one's grip, backing pin can reset under the effect of back-moving spring again.The fail safe that backing pin can further improve the safety socket is set, according to convention, synchronous coordination is pushed backing pin and depressing aside and is pressed and move these two actions of plate and need bimanualness, even therefore children hold in the conducting objects insertion slot, also may when removing this road insurance of backing pin, depress to press hardly and move plate, so it is very little that the possibility of electric shock accidents takes place.

As preferably, described pressing device also comprises and moves the plate guide groove, move the plate guide groove be fixedly arranged in the housing the bottom and perpendicular to the bottom of housing, press and move plate and slide to be located at and move in the plate guide groove, move plate guide groove bottom land and be provided with and support to press the spring that moves plate, the cell wall that moves the plate guide groove be provided with perforation, can hold the backing pin jack that backing pin penetrates.Move the plate guide groove and make to press and move plate stable mobile route is arranged, thereby guarantee that push rod can accurately promote outer lead member work, avoid causing device work malfunctioning because of excessive cooperation deviation.Backing pin enters the backing pin jack and blocking-up presses the mobile route that moves plate, make to press and move plate and can't move on to the position, push rod can not promote outer lead member, thereby realizes the limitation function that moves plate to pressing in better simply mode, improve the turn-on condition of safety socket, fail safe is higher.

As preferably, described enclosure interior is installed with the backing pin chute, and backing pin slides and is embedded in the described backing pin chute.The backing pin chute makes backing pin work accurately reliable for backing pin provides fixing moving track.

As preferably, described enclosure interior also is provided with a latch chute that intersects with the backing pin chute, and sliding in the latch chute is provided with the latch of backing pin sliding path capable of blocking.The purpose that backing pin is set is the difficulty that increases outer lead member and interior guiding element conducting, increases insurance together, prevents that the child from getting an electric shock.But childhood, increased age at the very moment, after existing judgement and the awareness of safety, if use the socket power taking also so loaded down with trivial details at every turn, to be very inconvenient, latch is set again for this reason, can when backing pin is unnecessary, moves on to the backing pin sliding path and stop backing pin to slide, make the backing pin disabler, just can directly insert plug during power taking so again, thus convenient use the greatly.

As preferably, backing pin is L-shaped, and the head of backing pin exposes case top.It is wider that the head of backing pin is exposed at this structure applicable surface of case top, is to embed the socket of wall or all can adopt as the socket of wiring board.

The invention has the beneficial effects as follows:

Greatly increase security of products.Keep enough distances between outer lead member and interior guiding element during the non-usefulness of safety socket electricity condition, do not have the cooperation receptacle loop of pressing device will be not can conducting, only after normally being subjected to pressing of plug with pressing device under the electricity condition, guiding element and outer lead member move toward one another ability conducting receptacle loop in plug base pin and pressing device promote respectively, therefore can greatly reduce accidental shock accident occurrence probability, and more can form dual fail-safe when having disposed backing pin, the situation of getting an electric shock takes place when effectively having avoided improper electricity consumption, thereby improves the fail safe that the safety socket uses conscientiously.In addition, the spacing between outer lead member and interior guiding element is bigger, even also be not easy short circuit under the situation of socket water inlet or dust.

Reliable operation.The safety socket can need not established labyrinths such as cross-over connection loop by the conducting of simple and reliable motion control home loop, can improve the functional reliability of product greatly.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is a kind of schematic top plan view of the present invention;

Fig. 3 is the structural representation of the present invention in embodiment 2;

Fig. 4 promotes the work schematic diagram of outer lead member for the present invention's push rod in embodiment 2;

Fig. 5 is the structural representation of the present invention in embodiment 3;

Fig. 6 is the structural representation of the present invention in embodiment 4.

Among the figure, 1-presses and moves plate, 2-push rod, 3-backing pin, 4-back-moving spring, 5-move the plate guide groove, 6-neutral slot, 7-hot slot, guiding element in the 8-zero line outer lead member, 9-zero line, 10-live wire outer lead member, guiding element in the 11-live wire, 12-backing pin chute, 13-housing, 14-pushes the inclined-plane, and 15-presses bar, 16-outer lead member support, the 17-tensioning spring, 18-latch chute, 19-latch.

Embodiment

The invention will be further described below in conjunction with the accompanying drawing specific embodiment.

Embodiment 1:

As depicted in figs. 1 and 2, a kind of safety socket, be the embedded two hole socket of body of wall, it comprises housing 13 and power line, housing is provided with the slot for plug zero line pin and the insertion of live wire pin, be respectively neutral slot 6 and hot slot 7, other outer lead member and the interior guiding element of being provided with of two slots, the zero line outer lead member 8 and the interior guiding element 9 of zero line that are divided into corresponding neutral slot 6, and guiding element 11 in the live wire outer lead member 10 of corresponding hot slot 7 and the live wire, guiding element 9 is between zero line outer lead member 8 and neutral slot 6 in the zero line, guiding element 11 is between live wire outer lead member 10 and hot slot 7 in the live wire, zero line outer lead member 8 links to each other with zero line in the power line, and live wire outer lead member 10 links to each other with live wire in the power line, each outer lead member and corresponding in contact site between guiding element be provided with silver or silver alloy contact.Guiding element is all made with reed in each, and one-body molded with the reed in the corresponding slot, and entire card is connected on the interior draw-in groove of housing.Also be provided with the pressing device that is subjected to control, can promote with the plug of safety receptacle accepts outer lead member and interior guiding element conducting on the housing, this pressing device comprises pressing and moves plate 1, push rod 2 and move plate guide groove 5, press move plate 1 be slidingly connected on the described housing and be in plug and the overlay area of this touch safety socket plug when pegging graft in, press and move plate 1 and push rod 2 is one-body molded.Be provided with between push rod 2 and outer lead member and can promote the crowded selection structure that outer lead member relies on interior guiding element, this crowded selection structure comprises the pushing inclined-plane of being located on the push rod 2, and is located at the curved surface on the outer lead member, and this curved surface is towards a side projection of push rod 2.The width of push rod 2 is slightly larger than the distance of zero line outer lead member 8 and live wire outer lead member 10 outer point.Outer lead member also is spring leaf, and outer lead member one end is fixed on the housing 13, and the other end is free end, has preferable elastic bending performance, the both sides of push rod 2 and interior guiding element separation outer lead member, and the pushing inclined-plane is guiding element outward.Press and move plate 1 and be in the perpendicular, pressing the top of moving plate 1 is provided with one integratedly and presses bar 15, non-ly be exposed at outside the described housing with pressing bar 15 under the electricity condition, the cross section that presses bar 15 is square, have on the case panel one with pressing bar 15 adaptive square hole, press bar 15 and be slidingly connected in this square hole.Move plate guide groove 5 be fixedly arranged in the housing the bottom and perpendicular to the bottom of housing, and be between neutral slot 6 and the hot slot 7, moving plate guide groove 5 is formed by two parallel relative risers, distance between plates is with to press the thickness that moves plate 1 suitable, the groove that to be respectively equipped with two cross sections on described two risers be arc, groove is relative in twos, press and move plate 1 and slide to be located at and move in the plate guide groove 5, move plate guide groove 5 bottom lands and be provided with and support to press the spring that moves plate 1, described spring is located in the duct that is made of described groove.The safety socket also is provided with and can stops to press and move backing pin 3 and the back-moving spring 4 that plate 1 moves, backing pin 3 is slidingly connected on the described housing and backing pin 3 heads are exposed to outside the housing, back-moving spring 4 is fixedly arranged on enclosure interior and links to each other with backing pin 3, and backing pin 3 is L-shaped, comprises mutually perpendicular pin body and dials handle.Housing 13 inner bottom parts are installed with backing pin chute 12, the pin body of backing pin 3 slides and is embedded in the described backing pin chute 12, and the cell wall bottom of moving plate guide groove 5 be provided with pin vertical perforation, that can hold backing pin 3 wear into the backing pin jack, the negative winding stem of dialling of backing pin 3 exposes case top, and case top is provided with the notch of dialling the handle slippage that can hold backing pin 3.Under Light Condition, be subjected to the roof pressure of described spring, press and move plate 1 by jack-up, do not have interaction force between the pushing inclined-plane of push rod 2 and outer lead member, and the pin body of backing pin 3 also passes described backing pin jack under back-moving spring 4 effects.Unloaded and will press bar 15 and depress the time, though promoted because of pushing the inclined-plane, guiding element 9 in zero line outer lead member 8 and the zero line, and in live wire outer lead member 10 and the live wire guiding element 11 each other near, all still keep separation.

If backing pin 3 does not shift out from described backing pin jack, plug can't be inserted into the end, and push rod 2 also can't promote outer lead member and contact with interior guiding element.During normal electricity consumption, need earlier backing pin 3 to be shifted out the dialling handle and push aside and maintain of backing pin 3 from described backing pin jack, remove and move stopping of plate 1 pressing, plug can be pressed and put in place.Insertion along with plug base pin, the interior guiding element 11 of guiding element 9 and live wire is subjected to pushing near zero line outer lead member 8 and live wire outer lead member 10 of two pins respectively in the zero line, but originally because in, spacing between outer lead member is bigger, zero line outer lead member 8 and the interior guiding element 9 of zero line, and can't connect between the guiding element 11 in live wire outer lead member 10 and the live wire, along with plug continues to move down, press and move the pressure that plate 1 is subjected to plug, driving push rod 2 moves down with plug, press move plate 1 just can overcome its bottom spring elastic force in moving plate guide groove 5, slide to bottom land, form the free end that cross component force pushes each outer lead member on the pushing inclined-plane of push rod 2 and make it to rely on corresponding interior guiding element, each just can contact with interior guiding element outer lead member, the conducting loop, the pin energising, the elastic force of described spring is less than the clamping frictional force of the reed in the slot to plug base pin, so plug base pin can stably rest in the slot after being inserted into the end.If there are children in hot slot 7, to insert the conducting objects measure-alike with plug base pin out of curiosity, as long as children one do not hold conducting objects, make on the other hand to press and move plate 1 and move on to the end, conducting objects just can not be charged so, electric shock accidents can not take place, generally speaking, with children's cognitive ability and movement coordination ability, make above-mentioned action and the possibility that causes getting an electric shock very low.

Embodiment 2:

As shown in Figure 3, a kind of safety socket is the embedded Three-hole socket of body of wall, and neutral slot 6 and hot slot 7 extended lines have angle on the housing.Push rod 2 is two, and constitute the V font, push rod 2 moves be formed in one structure and integral body of plate 1 and is " Y " font with pressing, push rod 2 is in and presses the bottom of moving plate 1 termination, the angle coupling of the angle that two push rods are 2 and neutral slot 6 and hot slot 7, press and move plate 1 along the angular bisector extended line setting of two V fonts that push rod 2 becomes, the push rod 2 space cathetus between outer lead member and interior guiding element just slides.Outer lead member is made with rigid metal sheet.Crowded selection structure between push rod 2 and the outer lead member comprises the pushing inclined-plane of being located on the push rod 2 14, and the outer lead member bottom is crooked arc, and the lug boss of outer lead member bottom arc is relative with pushing inclined-plane 14.Enclosure interior is installed with outer lead member support 16, outer lead member support 16 comprises the underframe of gantry structure and L shaped upper frame, the middle part of outer lead member is provided with shaft hole, crossbeam on the underframe of outer lead member support 16 passes this shaft hole, outer lead member thereby can rotate around described crossbeam, the middle and upper part of outer lead member links to each other with an end of a tensioning spring 17, and the other end of tensioning spring 17 links to each other with described upper frame.Press when moving plate 1 and being forced into the end, pushing inclined-plane 14 promotes the outer lead members bottom, and the outer lead member upper end overcomes tensioning spring 17 inside guiding elements inclinations.When socket is unloaded, presses and move plate 1 and upspring, push rod 2 rests on the middle part of outer lead member, and outer lead member is in the state with interior guiding element almost parallel under tensioning spring 17 effects, and inside and outside guiding element separates comprehensively.All the other are with embodiment 1.

During the unloaded normal electricity consumption of safety socket, need both hands to cooperate, pushing backing pin 3 aside on one side makes it to shift out and maintain from described backing pin jack, move stopping of plate 1 pressing to remove, press plug on one side, press and move plate 1 and be pressed into by the plug plane by pressing bar 15, the bottom of the pushing inclined-plane 14 pushing outer lead members of push rod 2 is away from interior guiding element, the outer lead member portion of being dynamically connected that rotates rotates, and the upper end of outer lead member will be near interior guiding element, simultaneously in guiding element because being subjected to the pin roof pressure of plug, outwards open at the top, after the mobile in opposite directions enough distances in outer lead member top and interior guiding element top, outer lead member just contacts conducting with interior guiding element, as shown in Figure 4.In slot, insert the conducting objects measure-alike with plug base pin if any children because of curiosity, owing to still have spacing between outer lead member and the interior guiding element, and another heavy protection of backing pin 3 is arranged, conducting objects can be not charged.The possibility that this moment, electric shock accidents took place exists only in backing pin 3 and is pushed aside, press and move plate 1 and be depressed, children contact under the full up sufficient situation of three conditions of conducting objects simultaneously, and concerning cognitive ability and muscle power all the very weak children, the possibility of finishing the very strong behave of complexity like this and purpose is very little.

Embodiment 3:

As shown in Figure 5, the safety socket is Three-hole socket, is made for the wiring board form.Crowded selection structure between push rod 2 and outer lead member comprises the outer convex surface of being located at respectively on push rod 2 and the outer lead member.Described enclosure interior is provided with a latch chute 18 that intersects with backing pin chute 12, and sliding in the latch chute 18 is provided with the latch 19 of backing pin 3 sliding paths capable of blocking, and latch 19 is exposed at the socket bottom.Backing pin 3 is straight-bar, and the head of backing pin 3 exposes the housing side, and the outside pull of head of directly clutching backing pin 3 during use can be removed and move stopping of plate 1 pressing.The effect of latch 19 reaches " unavailable " two state intercropping at backing pin 3 " available " and switches, if child is arranged in the family, for safety, latch 19 can be moved on on the position that does not hinder backing pin 3 advance and retreat, so just as described in the embodiment 1, move stopping of plate 1 pressing to remove if will make the socket energising must push backing pin 3 earlier aside, strengthen socket energising difficulty, prevent child's accidental shock.When assert that backing pin 3 is unnecessary, when for example child has grown up in the family, can after backing pin 3 is pushed aside, latch 19 be moved on to the intersection of backing pin chute 12 and latch chute 18, stop backing pin 3 to reset, make backing pin 3 disablers, just can directly insert plug during power taking so again, and needn't earlier backing pin 3 be pushed aside, thus convenient use the greatly.All the other are with embodiment 2.

Embodiment 4:

The safety socket is for being the embedded two hole socket of body of wall.As shown in Figure 6, guiding element 9 is positioned at neutral slot 6 upsides in zero line outer lead member 8 and the zero line, guiding element 11 is positioned at the downside of hot slot 7 in live wire outer lead member 10 and the live wire, push rod 2 is two, lay respectively at and press the two ends of moving plate 1 and lay respectively at zero line outer lead member 8 and the outside of live wire outer lead member 10, push rod 2 moves plate 1 integral body and is zigzag with pressing.All the other are with embodiment 1.

Claims

1. safety socket, comprise housing and power line, housing is provided with the slot for plug zero line pin and the insertion of live wire pin, it is characterized in that other outer lead member and the interior guiding element of being provided with of slot, interior guiding element is between outer lead member and slot, outer lead member links to each other with power line, also is provided with the pressing device that is subjected to control, can promote with the plug of safety receptacle accepts outer lead member and interior guiding element conducting on the housing.

2. safety socket according to claim 1, it is characterized in that described pressing device comprises that but pressing of elastic reset move plate (1) and push rod (2), press and move plate (1) and be slidingly connected on the described housing, press and move plate (1) and be connected with push rod (2), be provided with between push rod (2) and outer lead member can promote outer lead member rely in the crowded selection structure of guiding element.

3. safety socket according to claim 2 is characterized in that described crowded selection structure comprises the pushing inclined-plane of being located on the push rod (2), and is located at the curved surface on the outer lead member, and this curved surface is towards a side projection of push rod (2).

4. safety socket according to claim 2 is characterized in that outer lead member is spring leaf, and outer lead member one end is fixed on the housing, the both sides of push rod (2) and interior guiding element separation outer lead member.

5. safety socket according to claim 2, it is characterized in that outer lead member is rigid metal sheet, enclosure interior is installed with the outer lead member support, the middle part of outer lead member is rotatably connected on the outer lead member support, the top of outer lead member links to each other with an end of a tensioning spring, the other end of tensioning spring links to each other with the outer lead member support, and push rod (2) is between outer lead member and the interior guiding element.

6. according to claim 2 or 3 or 4 or 5 described safety sockets, it is characterized in that also comprising and to stop to press and move plate (1) mobile backing pin (3) and back-moving spring (4), backing pin (3) is slidingly connected on the described housing and backing pin (3) head is exposed to outside the housing, and back-moving spring (4) is fixedly arranged on enclosure interior and links to each other with backing pin (3).

7. safety socket according to claim 6, it is characterized in that described pressing device also comprises moves plate guide groove (5), move plate guide groove (5) be fixedly arranged in the housing the bottom and perpendicular to the bottom of housing, press and move plate (1) and slide to be located at and move in the plate guide groove (5), move plate guide groove (5) bottom land and be provided with and support to press the spring that moves plate (1), the cell wall that moves plate guide groove (5) be provided with perforation, can hold the backing pin jack that backing pin (3) penetrates.

8. safety socket according to claim 6 is characterized in that described enclosure interior is installed with the backing pin chute, and backing pin (3) slides and is embedded in the described backing pin chute.

9. safety socket according to claim 8 is characterized in that described enclosure interior also is provided with a latch chute that intersects with the backing pin chute, and sliding in the latch chute is provided with the latch of backing pin capable of blocking (3) sliding path.

10. safety socket according to claim 6 is characterized in that backing pin (3) is L-shaped, and the head of backing pin (3) exposes case top.