CN209401892U - Misplug prevention device and earth leakage protective socket for socket - Google Patents

Abstract

The utility model provides a kind of misplug prevention device and earth leakage protective socket for socket.Misplug prevention device includes the sliding block and elastic component in slider frame and merging slider frame；Slider frame is equipped with multiple notches corresponding with socket hole shape；Elastic component is provided so that sliding block covers socket aperture under the original state of elastic component；Sliding block includes at least two inclined-planes, and when insertion piece moves down simultaneously against at least two inclined-planes, sliding block is prompted to move along slider frame to expose socket aperture；The balance element abutted with slider frame is equipped on sliding block, balance element is arranged in the approximately mid way between of the bottom of sliding block, so that sliding block is overturn by balance element relative to slider frame, without exposing socket aperture when insertion piece is moved down only against one of inclined-plane.While the utility model can realize the various functions of existing earth leakage protective socket, with high security, it is at low cost the advantages that, due to simplified mounting structure, also improve production and processing and installation effectiveness, be widely used.

Description

Misplug prevention device and earth leakage protective socket for socket

Technical field

The utility model relates generally to household appliance technical field more particularly to a kind of misplug prevention device for socket, and Earth leakage protective socket with the misplug prevention device.

Background technique

As what the Electrical Safety of people was realized is continuously increased, the use of earth leakage protective socket is also more and more extensive.However, Existing earth leakage protective socket is there are still some shortcomings, for example the housing parts such as upper cover, pedestal of earth leakage protective socket are usually adopted It is fastened with fasteners such as screws, anyone (including consumer) can be dismounted with suitable tool, and there are serious peaces Full hidden danger.The socket aperture of existing socket is mostly exposed for another example, when installing and using in the family, conductive different such as children's metal Object, which is inserted into any electric socket hole, can all easily cause electric shock injury, thus threat to life property and safety.

Utility model content

The purpose of this utility model is that being directed to above-mentioned defect existing in the prior art, a kind of inserting for socket is proposed The protective device of bore and earth leakage protective socket with the protective device, to further promote safety in utilization.In addition, The socket does not use the elements such as screw to fasten and has Anti-dismounting structure, so that installation simplifies, connection is reliable.

For this purpose, one aspect according to the present utility model, provides a kind of misplug prevention device for socket, the anti-mis-insertion Device includes the sliding block and elastic component in slider frame and the merging slider frame；The slider frame is equipped with and socket hole shape pair The multiple notches answered；The elastic component is provided so that the sliding block covers described insert under the original state of the elastic component Bore；The sliding block includes at least two inclined-planes, described when insertion piece moves down simultaneously against at least two inclined-plane Sliding block is prompted to be moved along the slider frame to expose the socket aperture；Wherein, it is equipped with and the slider frame on the slide block The balance element of abutting, the balance element are arranged in the approximately mid way between of the bottom of the sliding block, so that when insertion piece only supports When moving down by one of inclined-plane, the sliding block is overturn by the balance element relative to the slider frame, without revealing The socket aperture out.

According to above-mentioned technical concept, the utility model can further comprise any one or more following optional forms.

In certain optional forms, the balance element be stretched out from the bottom of the sliding block it is convex with curved surfaces Platform.

In certain optional forms, the shell of the slider frame and/or the socket is equipped at least one locating part, with It abuts the sliding block in sliding block overturning and limits the sliding block and moved along the slider frame.

In certain optional forms, the locating part for from the shell of the slider frame and/or the socket towards institute State the convex block that sliding block stretches out.

In certain optional forms, the misplug prevention device further includes the screening glass being mounted at least one inclined-plane, institute Screening glass is stated to be made of metal.

In certain optional forms, the screening glass includes the binding face for attaching the inclined-plane, and from the binding face At least one stabilizer blade vertically extended, the stabilizer blade are inserted into the receiving hole being arranged on the inclined-plane.

In certain optional forms, the elastic component is pressure spring, tension spring or torsional spring.

Another aspect according to the present utility model, provides a kind of earth leakage protective socket, and the earth leakage protective socket includes shell Body is set to the intracorporal cartridge assemblies of shell and socket piece, wherein the shell include by snap-in structure connect upper cover and Pedestal, it installs edge equipped at least one grab and/or buckle to the upper cover rim, and the pedestal installs edge along it and is equipped with phase At least one buckle and/or grab of cooperation, after the grab is engaged with each other with the buckle, the upper cover and the bottom Seat is in the lock state, wherein is additionally provided with above-mentioned misplug prevention device between the upper cover and the socket piece.

According to above-mentioned technical concept, the utility model can further comprise any one or more following optional forms.

In certain optional forms, the grab is arranged to extend from the installation edge of the upper cover or pedestal outstanding Arm, the free end of cantilever are equipped with claw, and the buckle is arranged to the card extended from the installation edge of the pedestal or upper cover Slot, the card slot are equipped with locking surface, and after the grab is placed in the card slot, the claw elastic engaging is in the locking surface.

In certain optional forms, the locking surface is arranged to the outer of cascaded surface in the card slot or the card slot End surface.

The misplug prevention device and earth leakage protective socket of the utility model are in the various function that existing earth leakage protective socket can be achieved Can while, with high security, it is at low cost the advantages that, due to simplified mounting structure, also improve production and processing and installation Efficiency is widely used.

Detailed description of the invention

The other feature of the utility model and advantage are by the optional embodiment by being described in detail below in conjunction with attached drawing It more fully understands, identical label identifies the same or similar component in attached drawing, in which:

Fig. 1 is according to a kind of schematic diagram of the earth leakage protective socket of optional embodiment of the utility model；

Fig. 2 is the decomposition diagram of earth leakage protective socket shown in Fig. 1；

Fig. 3 is that earth leakage protective socket shown in Fig. 1 removes the schematical top view after upper cover；

Fig. 4 is the schematical top view of cartridge assemblies in earth leakage protective socket shown in Fig. 1；

Fig. 5 is the decomposition diagram of cartridge assemblies in Fig. 4；

Fig. 6 A is the schematic cross-section that earth leakage protective socket is in trip status (disconnection)；

Fig. 6 B is the schematic cross-section that earth leakage protective socket is in reset state (connection)；

Fig. 7 A is a kind of schematic cross-section of snap-in structure between upper cover and pedestal in earth leakage protective socket；

The schematic cross-section of Fig. 7 B another snap-in structure between upper cover and pedestal；

Fig. 7 C is the schematic diagram of upper cover in earth leakage protective socket shown in Fig. 1；

Fig. 7 D is the schematic diagram of pedestal in earth leakage protective socket shown in Fig. 1；

Fig. 8 A is the decomposition diagram according to a kind of misplug prevention device of optional embodiment；

Fig. 8 B is misplug prevention device shown in Fig. 8 A and the schematic cross-section after upper cover cooperation；

Fig. 8 C is the decomposition diagram of misplug prevention device and upper cover；

Fig. 9 is the circuit diagram according to a kind of earth leakage protective socket of optional embodiment.

Specific embodiment

The implementation and use of embodiment is discussed further below.It will be appreciated, however, that the specific embodiment discussed only shows Illustrate to plasticity the ad hoc fashion for implementing and using the utility model, rather than limits the scope of the utility model.It is each in description The statement in the locations of structures of a component such as directions such as upper and lower, top, bottom is not absolute, opposite.When each portion When part is arranged as shown in the figure, the statement of these directions is appropriate, but in figure when the position change of all parts, these direction tables State also corresponding change.

It is shown combined with Figure 1 and Figure 2, according to a kind of earth leakage protective socket of optional embodiment of the utility model.The leakage Electric protection socket includes shell and is set to the intracorporal cartridge assemblies of shell.Specifically, shell includes being connected by snap-in structure Upper cover 1 and pedestal 2, upper cover 1 are pressed equipped with socket aperture, for the reset button hole and test of reset button 3 and the insertion of test button 4 Buttonhole, and the indicator lamp hole for the insertion of such as LED light guide sheet 10.Middle layer bracket 5, grounding rack 7, cartridge assemblies are equipped in shell 6 settings are in middle level between bracket 5 and pedestal 2.Wherein, middle layer bracket 5 is arranged in pedestal 2, and is covered in cartridge assemblies 6. Middle layer bracket 5 passes through in middle level for firewire socket piece 9, zero curve socket piece 8, grounding rack 7 and test film 11 to be arranged on it Corresponding position limiting structure is arranged on bracket 5 ensures that the position of each components is fixed.In addition, the setting of LED light guide sheet 10 is in middle level On bracket 5, so that the LED light source issued in cartridge assemblies 6 to be exported to the surface of upper cover 1.

In conjunction with shown in Fig. 4 and Fig. 5, in the illustrated embodiment, cartridge assemblies 6 by PCB 61 and can be welded and assemblied on PCB Firewire moving contact 62, zero curve moving contact 63 on 61, firewire output static contact 64, zero line output static contact 65, tripping coil 66, Output end 67, input terminal 68, detection coil component 69, reseting plate 610 and PCB electrical contact 611 form.In tripping coil 66 also It is provided with tripping iron core 661, lock 662 and buckle releaser 663.Firewire moving contact 62 is provided with one group of dynamic electrical contact 62a, 62b, together Sample, zero curve moving contact 63 are also equipped with one group of dynamic electrical contact 63a, 63b, thus defeated with firewire output static contact 64, zero curve respectively Electrostatic contact 64a, 65a of static contact 65 match to form one group of switch out, and respectively with firewire socket piece 9, zero curve socket piece 8 Electrostatic contact 9a, 8a match to form another group of switch, it is as shown in Figure 6 A and 6 B.

Cartridge assemblies 6 are arranged in pedestal 2 together with trip spring 12, and trip spring 12 is assemblied in cartridge assemblies 6 In mounting hole on tripping coil 66.Meanwhile corresponding wiring spiral shell is respectively embedded into two input terminals and output end of cartridge assemblies Screw assembly, such as the terminal screw component 14 in Fig. 2, screw assembly exposes from the corresponding aperture that pedestal is arranged, and facilitates terminal block. In addition, it can be seen in fig. 2 that be provided with ground wire fast-wiring hole 21 on pedestal 2, by on grounding rack 7 earthing screw 71 and Fast-wiring can be realized by being grounded four square pieces 72, as shown in Figure 3.

According to the utility model, the shell of earth leakage protective socket is arranged to no screw assembly, and has Anti-dismounting structure.Knot Fig. 7 A to Fig. 7 D is closed, the upper cover 1 of shell is connected with pedestal 2 by snap-in structure, and wherein upper cover 1 is installed edge along it and is equipped at least One grab and/or buckle, pedestal 2 along its install edge be equipped with match at least one buckle and/or grab, when grab with After buckle engages with each other, that is, upper cover 1 and pedestal 2 may make to be in the lock state.In some embodiments, grab can be set It is set to the cantilever extended from the installation edge of upper cover 1 or pedestal 2, the free end of cantilever can be equipped with claw, and correspondingly, buckle can It is arranged to the card slot extended from the installation edge of pedestal 2 or upper cover 1.To realize engaging between the two, card slot can be equipped with Locking surface, after in grab merging card slot, by claw elastic engaging in locking surface.

A kind of embodiment as shown in Figure 7 A is provided with the extended respectively from its two sides installation edge in upper cover 1 The free end of one grab 1a, the first grab are equipped with the first claw 1b.Corresponding first card slot 2a is provided on pedestal 2, in card slot First base receptacle 2b is formed with to accommodate the first grab 1a, wherein by forming ladder in first base receptacle 2b Face 2b1 constitutes locking surface.When upper cover 1 be packed into after, the first claw 1b can elastic engaging in cascaded surface 2b1.Due to upper cover two sides It is provided with same structure, and internal compact space limit, upper cover 1 and pedestal 2 is firmly combined, can not be split, such as recruitment Tool forces fractionation product to will be unable to restore, and user will be unable to continue to use.

A kind of embodiment as shown in Figure 7 B is provided with the extended respectively from its two sides installation edge in upper cover 1 The free end of two grab 1c, the second grab are equipped with the second claw 1d.Corresponding second card slot 2c is provided on pedestal 2, in card slot Second base receptacle 2d is formed with to accommodate the second grab 1c, wherein formed by means of the bottom end face 2d1 of the second card slot 2c Locking surface.When upper cover 1 be packed into after, the second claw 1d can elastic engaging in bottom end face 2d1.

It should be understood that two kinds of embodiments shown in Fig. 7 A and Fig. 7 B can be independently operated, and also be used in conjunction with, to obtain Better fastening effect, as shown in figs. 7 c and 7d.

According to the utility model, misplug prevention device 19 is equipped with advantageously between upper cover 1 and socket piece.Specifically combine Fig. 8 A To Fig. 8 C illustrated embodiment, misplug prevention device includes slider frame 191 and the sliding block that can be placed in slider frame 191 193 and bullet Property part 192.Referring to Fig. 8 A, slider frame 191 is equipped with multiple notches 1911 corresponding with socket hole shape, and elastic component 192 is assemblied in In the mounting post 1912 being arranged on slider frame 191, and it is caught in the concave surface 1932 being arranged on 193 bottom of sliding block, to utilize elasticity The elastic force of part realizes anti-misplug function.Elastic component 192 may be selected to be pressure spring, tension spring or torsional spring, enable sliding block 193 in elasticity Socket aperture is covered under the original state of part 192.

According to the socket hole number of earth leakage protective socket, sliding block 193 may include at least two inclined-planes.In illustrated embodiment In, two inclined-planes are illustrated, when insertion piece moves down simultaneously against the two inclined-planes, sliding block 193 can be prompted to It moves along slider frame 191 to expose socket aperture.In order to realize anti-error insertions function, it is equipped on sliding block 193 and is supported with slider frame 191 The balance element connect, the balance element are preferably placed in the approximately mid way between of the bottom of sliding block 193 so that when insertion piece only against When one of inclined-plane moves down, sliding block 193 can be overturn by balance element relative to slider frame 191, be inserted without exposing Bore.In some embodiments, balance element is arranged to the boss with curved surfaces stretched out from the bottom of sliding block 193 1933, as shown in Figure 8 A.

In addition, in some embodiments, at least one limit can be also equipped on the shell of slider frame 191 and/or socket Part is moved with abutting sliding block when sliding block 193 is overturn and limiting sliding block along slider frame 191.In embodiment shown in the figure, limit Position part can be the convex block stretched out from the shell of slider frame 191 and socket towards sliding block 193, such as illustrate in Fig. 8 B In the slider frame limit point 1913 on slider frame 191 and the upper cover limit point 1901 being arranged in upper cover 1.

The working principle of misplug prevention device 19 is summarized below in conjunction with Fig. 8 B.

Abnormal operating state: as shown in Figure 8 B, when the insertion pieces such as conductor are inserted into from the socket aperture 181 of upper cover 1, due to The centre that two socket apertures are arranged in balance element on sliding block 193, i.e. boss 1933, the stress at A point of sliding block 193.According to thick stick Rod principle, sliding block 193 will raise at B point and the limit point 1901 by being arranged in upper cover 1 limits, and sliding block 193 cannot at this time It is moved along slider frame 191, therefore conductor can not be inserted into.Similarly, when conductor is inserted into from the socket aperture 182 of upper cover 1, sliding block 193 The stress at B point so that sliding block 193 is limited at C point by the limit point 1913 being arranged on slider frame 191, therefore conductor without Method insertion.In this way, the insertion for advantageously preventing foreign matter, avoids accident.

Normal operating conditions: when being inserted into using the plug met the requirements of the standard, plug blades are inserted into two of upper cover simultaneously Socket aperture, due to the balanced action of the boss 1933 of sliding block 193, A point and B point are in equilibrium state, and sliding block 193 will not be relative to Slider frame 191 is overturn.At this point, being displaced so that sliding block 193 generates to the right due to the effect for being downwardly into power along inclined-plane and compressing bullet Property part 192, to expose socket aperture, plug can be normally inserted into, and with built-in firewire socket piece, zero curve socket piece realize electric power connect It connects.Such as plug is extracted, due to the screen resilience of elastic component 192, sliding block 193 is mobile back to original position, continues to play anti-mis-insertion work With.

It is also seen that misplug prevention device 19 may also include the protection being mounted at least one inclined-plane in Fig. 8 A and Fig. 8 B Piece, the screening glass can be made of metal to improve service life.A screening glass 194 is illustrated in figure, in shown implementation In mode, screening glass 194 includes the binding face 1941 for attaching inclined-plane, and at least one vertically extended from binding face 1941 Stabilizer blade 1942, stabilizer blade 1942 are inserted into the receiving hole 1931 being arranged on inclined-plane realization and are reliably fixed.

As described above, the earth leakage protective socket of the utility model further includes reset assembly, test suite and trip assembley therefor, The working principle of earth leakage protective socket is summarized in conjunction with Fig. 2, Fig. 5, Fig. 6 A, Fig. 6 B and Fig. 9 below.

Reseting procedure: when pressing reset button 3 (RESET), reseting plate 610 and PCB electrical contact thereunder is set 611 closures (i.e. SW1 closure in Fig. 9), SCR transient switching, tripping coil 66 (SOL) generate magnetic field, driving tripping iron core 661 Movement, and 662 movement of lock is driven, make the reset button reseting hook 3a that is arranged in reset button 3 by being arranged on lock 662 Hole.When unclamping reset button 3, due to the effect of reset spring 12, buckle releaser 663 is raised, is closed at all contacts, Realize that input is connect with output power.

Tripping process: when detection coil component 69 (CT1, CT2 on Fig. 9) detects electric leakage, electric leakage is believed by IC Number processing, when meeting tripping condition, just trigger controllable silicon SCR conducting, make tripping coil 66 generate magnetic field, magnetic field force overcomes de- The elastic force driving tripping iron core 661 of button spring 13 moves, and drives 662 movement of lock.Due to the elastic force of reset spring 12, make multiple The hole that the reset button reseting hook 3a being arranged on the button 3 of position is arranged from lock 662 skids off, and at this moment, buckle releaser 663 is transported downwards It is dynamic, so that all contacts simultaneously switch off, disconnects input and connect with output power.

Here it should be understood that Fig. 1 only shows anti-error inserting according to the present utility model to Fig. 9 illustrated embodiment Optional shape, size and the arrangement with each selectable unit (SU) of earth leakage protective socket are set, however it is only to illustrate rather than limit System, without departing substantially from the thought and range of the utility model, can also take other shapes, size and arrangement.This Outside, slider frame and sliding block are shown and are described in the form of integrally formed respectively in misplug prevention device in above embodiment, thus Easy to process, assembly, however can also or part combination forming separated according to the quantity of socket aperture.

The technology contents and technical characterstic of the utility model are had revealed that above, it being understood, however, that in the utility model Under creative ideas, those skilled in the art can make various changes and improve to design disclosed above, but belong to this reality With novel protection scope.The description of above embodiment is exemplary rather than restrictive, the protection of the utility model Range is determined by claim.

Claims (10)

1. a kind of misplug prevention device for socket, which is characterized in that the misplug prevention device includes slider frame and merging institute State the sliding block and elastic component in slider frame；The slider frame is equipped with multiple notches corresponding with socket hole shape；The elastic component It is provided so that the sliding block covers the socket aperture under the original state of the elastic component；The sliding block includes at least two A inclined-plane, when insertion piece moves down simultaneously against at least two inclined-plane, the sliding block is prompted to along the slider frame Movement is to expose the socket aperture；

Wherein, it is equipped with the balance element abutted with the slider frame on the slide block, the balance element is arranged in the sliding block The approximately mid way between of bottom, so that the sliding block passes through institute when insertion piece is moved down only against one of inclined-plane It states balance element to overturn relative to the slider frame, without exposing the socket aperture.

2. misplug prevention device according to claim 1, which is characterized in that the balance element is prominent from the bottom of the sliding block The boss with curved surfaces stretched out.

3. misplug prevention device according to claim 1, which is characterized in that the shell of the slider frame and/or the socket It is equipped at least one locating part, to abut the sliding block in sliding block overturning and limit the sliding block along the slider frame It is mobile.

4. misplug prevention device according to claim 3, which is characterized in that the locating part be from the slider frame and/or The convex block stretched out on the shell of the socket towards the sliding block.

5. misplug prevention device according to any one of claim 1 to 4, which is characterized in that the misplug prevention device also wraps The screening glass being mounted at least one inclined-plane is included, the screening glass is made of metal.

6. misplug prevention device according to claim 5, which is characterized in that the screening glass includes the patch for attaching the inclined-plane Conjunction face, and at least one stabilizer blade vertically extended from the binding face, the stabilizer blade are inserted into being arranged on the inclined-plane Receiving hole.

7. misplug prevention device according to any one of claim 1 to 4, which is characterized in that the elastic component is pressure spring, opens Spring or torsional spring.

8. a kind of earth leakage protective socket, the earth leakage protective socket includes shell, is set to the intracorporal cartridge assemblies of shell and inserts Seat piece, which is characterized in that the shell includes the upper cover connected by snap-in structure and pedestal, its installation edge of the upper cover rim Equipped at least one grab and/or buckle, the pedestal installs edge along it and is equipped at least one buckle and/or card matched Hook, after the grab is engaged with each other with the buckle, the upper cover and the pedestal are in the lock state, wherein in institute It states and is additionally provided with misplug prevention device according to any one of claim 1 to 7 between upper cover and the socket piece.

9. earth leakage protective socket according to claim 8, which is characterized in that the grab be arranged to from the upper cover or The cantilever that the installation edge of pedestal extends, the free end of cantilever are equipped with claw, the buckle be arranged to from the pedestal or The card slot that the installation edge of upper cover extends, the card slot is equipped with locking surface, after the grab is placed in the card slot, the card Pawl elastic engaging is in the locking surface.

10. earth leakage protective socket according to claim 9, which is characterized in that the locking surface is arranged to the card slot In cascaded surface or the card slot external end face.