CN108417468A - A kind of earth leakage protective device - Google Patents
A kind of earth leakage protective device Download PDFInfo
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- CN108417468A CN108417468A CN201810391929.XA CN201810391929A CN108417468A CN 108417468 A CN108417468 A CN 108417468A CN 201810391929 A CN201810391929 A CN 201810391929A CN 108417468 A CN108417468 A CN 108417468A
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- rotating member
- static contact
- transmission mechanism
- protective device
- reset unit
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- 230000001681 protective effect Effects 0.000 title claims abstract description 40
- 230000003068 static effect Effects 0.000 claims abstract description 79
- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 238000000926 separation method Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 2
- 230000007812 deficiency Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
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Abstract
The present invention provides a kind of earth leakage protective device comprising：Holder which is provided with the static contact for being connected to load circuit；Transmission mechanism which is provided with the moving contact being correspondingly arranged with static contact, and transmission mechanism is movably connected between the first reset unit and protection location, and it has the lock position for coordinating locking with protection location；Further include：Actuating unit comprising the protection location that dynamic and static contact separation is driven when electric leakage drives dynamic and static contact to restore the first reset unit of conducting, and the second reset unit on transmission mechanism, protection location and the first reset unit are installed on holder；Since the gap between dynamic/static contact is after transmission mechanism is reset to lock position, it will not be influenced by the first reset unit, therefore avoiding reset button in the prior art, when pressing not in place, dynamic/static contact is easy the technological deficiency of scaling loss, extends service life.
Description
Technical field
The present invention relates to electrical protection equipment technical fields, and in particular to a kind of earth leakage protective device.
Background technology
Earth leakage protective device be equipment occur leak current fault when, circuit can be disconnected in time, to ensured equipment and
Personal safety, therefore be widely used.
Chinese patent literature CN206401254U discloses a kind of dynamic first support of earth leakage protective device, and main includes electricity
Road plate, release link, contact pressing plate, moving contact, static contact, socket, tripping coil component, static contact one end are arranged in circuit board
On, the other end is abutted with contact pressing plate, and moving contact is arranged on socket, and socket drives moving contact under the action of release link
It is bonded or detaches with static contact, tripping coil component includes tripping coil, iron core, abutting with iron core in mandrel bottom is arranged
Second back-moving spring and the card that can coordinate clamping with the card slot of release link being arranged at the top of iron core.When there is leak current fault
When, tripping coil has electric current to pass through, and generates magnetic field, and iron core moves down, drives card and exact separation, and second resets bullet at this time
Spring stores energy, and release link drives socket to move under the action of (the first back-moving spring, to make moving contact and static contact
Separation disconnects main line；After leak current fault excludes, tripping coil does not have electric current to pass through, and second back-moving spring releases energy, card
Piece abuts under the action of second back-moving spring with the outer wall of release link, pushes release link, and moving contact is made to be moved towards static contact direction
It is dynamic, when card slot moves to the position opposite with card, card under the action of second back-moving spring under the action of with card slot card
It connects, moving contact and static contact fitting contact, main line are connected at this time.
The defect of above-mentioned technical proposal is：When operating personnel drive release link to carry out homing action by reset button
When, it often will appear reset button and press situation not in place (card slot of release link does not engage also with the card of tripping coil component
When connection, operating personnel have just unclamped reset button), i.e., easily there is moving contact and move to be positioned relatively close to static contact
When separated immediately situation again, there are breakdown risk when due to the position between dynamic/static contact relatively nearly (i.e. gap is smaller),
And when dynamic/static contact of short duration connection occurs and is divided into disconnected phenomenon, it is also easy to cause dynamic/static contact scaling loss, it has shortened sound and has touched
The service life of head；In addition, the sound contact due to dynamic/static contact is generally silver contact, touched when directly driving sound by release link
When head is connected, if when larger by the dynamics of release link under operator, the stress between sound contact is larger, it is easily damaged silver and touches
Point, has shortened service life.
Invention content
Therefore, the technical problem to be solved in the present invention be to overcome the reset button of earth leakage protective device in the prior art by
When pressing not in place, dynamic/static contact is easy scaling loss, the short technological deficiency of service life, to provide it is a kind of it is simple in structure, using the longevity
Order long earth leakage protective device.
For this purpose, the present invention provides a kind of earth leakage protective device comprising：
Holder which is provided with the static contact for being connected to load circuit；
Transmission mechanism, which is provided with the moving contact being correspondingly arranged with the static contact, and the transmission mechanism is movably connected on
Between first reset unit and protection location, and it has the lock position for coordinating locking with the protection location；
Further include：
Actuating unit comprising the protection location that dynamic and static contact separation is driven when electric leakage drives dynamic and static contact recovery to lead
The first logical reset unit, and the second reset unit on the transmission mechanism, the protection location and first reset
Unit is installed on the holder；
The first reset unit drive transmission device is reset to lock position, and second reset unit drives the biography
Moving contact on motivation structure is closed with the static contact；It is moved in the transmission mechanism by the driving of first reset unit
Before the lock position, the moving contact has to the movement far from the static contact direction.
As a preferred embodiment, the transmission mechanism includes the first rotating member being pivotally connected by first rotating shaft and second turn
Moving part, there are two the second rotating member tools is arranged in obtuse angle in the first, second rotating arm of the first rotating shaft both sides, wherein
First rotating arm close to the static contact is equipped with the moving contact, on first rotating member far from the static contact one
Side is equipped with the second shaft being connected on the holder, and second shaft is arranged with the first rotating shaft interval.
As a preferred embodiment, the drive block opposite with first rotating member is additionally provided on the first rotating arm,
When electric leakage, first rotating member drives dynamic/static contact to detach by the drive block.
As a preferred embodiment, first reset unit includes push rod and the reset bullet that is sheathed on the push rod
Spring, the push rod are movably connected on the holder and are abutted against with second rotating arm, are pushed away described in the resetting spring control
Bar does not automatically reset after by pressed by external force.
As a preferred embodiment, second reset unit is spring, which is set to second rotating arm and institute
It states between the first rotating member.
As a preferred embodiment, the protection location include the locking bar for being articulated in the holder, locking bar resetting spring with
And it is controlled by the dynamic iron core of the control circuit, the movable end of the dynamic iron core is connected to the locking bar, and the locking bar is to described
First rotating member coordinates locking, further includes being set between the holder and first rotating member to be used to drive the driver
Structure is detached from the elastic component of the lock position.
As a preferred embodiment, accordingly it is equipped with the lock tooth worked in coordination on the locking bar and first rotating member.
As a preferred embodiment, the earth leakage protective device further includes that the instruction transmission mechanism is in the locking position
The instruction unit set, the instruction unit are set on the transmission mechanism.
As a preferred embodiment, the earth leakage protective device further includes shell, and the shell, which is equipped with, allows instruction unit
The through-hole of stretching, and show the window of the instruction unit, when the transmission mechanism is in lock position, the instruction unit is aobvious
It is shown in the window.
A kind of earth leakage protective device provided by the invention, has the following advantages：
1. the earth leakage protective device of the present invention, including holder, transmission mechanism and actuating unit, transmission mechanism which is provided with
The moving contact being correspondingly arranged with static contact, transmission mechanism are movably connected between the first reset unit and protection location, and it has
There is the lock position for coordinating locking with protection location；Actuating unit includes the protection location that dynamic and static contact separation is driven when electric leakage,
Dynamic and static contact is driven to restore the first reset unit of conducting, and the second reset unit on transmission mechanism.Pass through setting
Protection location and the second reset unit, when carrying out resetting operation, since the driving by the first reset unit is transported in transmission mechanism
It moves to before lock position, moving contact has to the movement far from the static contact direction, and behind lock position, and first is multiple
Bit location can not continue drive transmission device movement, still have larger gap between dynamic/static contact at this time, therefore be not present
The risk punctured because caused by gap is smaller, extends service life；In addition external force is driven by the first reset unit and is driven
It can not be further continued for drive transmission device movement after reset to lock position, drive and be driven thereafter through the second reset unit
Moving contact in mechanism is closed with static contact, since the second reset unit has pre-stored power, moving contact is pushed to be led with static contact
Logical driving force is the pre-stored power of the second reset unit, unrelated with the applied force of user, no matter user is with which kind of dynamics
Pressing, will not all cause dynamic/static contact extrusion damage, further extend service life.
2. the earth leakage protective device of the present invention, transmission mechanism includes the first rotating member and second being pivotally connected by first rotating shaft
Rotating member, there are two be arranged in obtuse angle in the first, second rotating arm of first rotating shaft both sides, wherein close to quiet the second rotating member tool
The first rotating arm of contact is equipped with moving contact, and the side far from static contact is equipped with the be connected on holder on the first rotating member
Two shafts, the second shaft are arranged with first rotating shaft interval.When carrying out resetting operation, the second rotating arm is in the first reset unit
It rotates to close to the direction of the first rotating member under driving, is contacted with the first rotating member, and the first rotating member is driven to be reset to locking
Position, then the moving contact on the second reset unit drive transmission device and static contact closure, the first rotating member move to locking
Before position, moving contact first to far from static contact direction move, then to close to static contact direction move, dynamic/static contact by
Larger gap can be still kept before the driving of second reset unit, therefore there is no the breakdown because caused by gap is smaller
Risk, extend service life, above-mentioned first rotating member and the second rotating member are ingenious in design and simple in structure, easy to assembly.
3. the earth leakage protective device of the present invention, the second reset unit is spring, which is set to the second rotating arm and first
Between rotating member, due to having pre-stored power, spring to turn in the second rotating arm and connect with the first rotating member after spring-compressed
Accumulation of energy when touching discharges when the first rotating member moves lock position and removes external force and is pre-stored power, drives moving contact and static contact
Conducting, therefore it is the second reset unit in storing power to push the driving force that is connected with static contact of moving contact, with applying for user
Reinforce it is unrelated, though user with which kind of dynamics press, extrusion damage will not be all caused to dynamic/static contact, further extending makes
Use the service life.
4. the present invention earth leakage protective device, protection location include the locking bar for being articulated in holder, locking bar resetting spring and
It is controlled by the dynamic iron core of control circuit, the movable end of dynamic iron core is connected to locking bar, and the first rotating member of locking bar pair coordinates locking, also wraps
It includes set on the elastic component for being detached from lock position for drive transmission device between holder and the first rotating member.It is protected by being arranged
Unit, in normal use, locking bar and the first rotating member coordinate locking, and when leak current fault occurs, dynamic iron core drives locking bar and the
One rotating member unlocks, and elastic component drive transmission device is detached from lock position, and above structure set-up mode is simple.
5. the earth leakage protective device of the present invention, earth leakage protective device further includes the finger that indicating transmission is in lock position
Showing that portion, instruction unit are set on transmission mechanism, earth leakage protective device further includes shell, and shell is equipped with the window of display instruction unit,
When transmission mechanism is in lock position, instruction unit is shown in window.Operating personnel can intuitively be obtained by watch window
The working condition for knowing earth leakage protective device, improves security performance.
Description of the drawings
In order to illustrate more clearly of the technical solution in the prior art or the specific embodiment of the invention, below to existing skill
Attached drawing used in art or specific implementation mode description is briefly described, it should be apparent that, for ordinary skill people
For member, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of earth leakage protective device.
Fig. 2 is that the structural schematic diagram after shell and part-structure is removed in Fig. 1.
Fig. 3 is that the dynamic/static contact of earth leakage protective device shows in the structure of discrete state (the first rotating member is detached from lock position)
It is intended to.
Fig. 4 is the assembling structure schematic diagram of the first rotating member and the second rotating member.
Fig. 5 is the assembling structure schematic diagram of the first rotating member and another angle of the second rotating member.
Fig. 6 is the decomposition texture schematic diagram of the first rotating member and the second rotating member.
Fig. 7 is that the second rotating member is rotated by fulcrum of first rotating shaft, and the second rotating arm is turned to be contacted with the first rotating member
The first motion state schematic diagram.
Fig. 8 is that the second rotating member and the first rotating member are rotated by fulcrum of the second shaft jointly, and the first rotating member moves to
Second motion state schematic diagram of lock position (when the second reset unit does not reset also).
Fig. 9 is structural schematic diagram of the dynamic/static contact in closed state of earth leakage protective device.
Figure 10 is the structural schematic diagram after Fig. 3 removal holders.
Figure 11 is another structural schematic diagram that Fig. 9 turns over an arrisdefect degree.
Figure 12 is the structural schematic diagram of holder.
Reference numeral：1, the first rotating member；11, first rotating shaft；12, the second shaft；14, instruction unit；2, the second rotating member；
20, moving contact；21, first rotating arm；22, the second rotating arm；23, spring；24, drive block；3, holder；30, static contact；31、
Stopper；5, push rod；51, resetting spring；6, locking bar；61, locking bar resetting spring；62, dynamic iron core；63, elastic component；64, tooth is locked；
65, dynamic iron core spring；66, tripping coil；7, shell；71, window.
Specific implementation mode
Technical scheme of the present invention is described with reference to the accompanying drawings of the specification, it is clear that following embodiments is not this
Invent whole embodiments.Based on embodiment described in the invention, those of ordinary skill in the art are not making other wounds
The every other embodiment obtained under the premise of the property made labour, belongs to protection scope of the present invention.
It should be noted that in the description of the present invention, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implying relative importance.
Embodiment
The present embodiment provides a kind of earth leakage protective devices, as shown in Figure 3 comprising：Holder 3, transmission mechanism and engine
Structure, wherein holder 3 are equipped with the static contact 30 for being connected to load circuit；Transmission mechanism is equipped with and is correspondingly arranged with static contact 30
Moving contact 20, transmission mechanism are movably connected between the first reset unit and protection location, and it has and protection location cooperation
The lock position of locking；Actuating unit includes the protection location that dynamic and static contact separation is driven when electric leakage, drives dynamic and static contact extensive
The first reset unit by outer power drive for being connected again and the second reset unit for having pre-stored power, wherein the second reset unit
On transmission mechanism, protection location and the first reset unit are installed between holder 3 and transmission mechanism；First reset unit is used
Drive transmission device is reset to lock position when hand-reset, and the second reset unit then to pass in the first reset unit of operation
Motivation structure reaches lock position and with after protection location locking, and the moving contact 20 on drive transmission device is closed with static contact 30；
By the first reset unit driving before transmission mechanism moves to lock position, moving contact 20 has to far from static contact 30 side
To movement.The earth leakage protective device of the present embodiment, by the way that the first reset unit by outer power drive is arranged and has pre-stored
Second reset unit of power, when carrying out Manual reset operation, external force is reset to by the first reset unit drive transmission device
Behind lock position, the first reset unit can't continue to exercise, and still has larger gap between dynamic/static contact at this time, passes through at this time
Moving contact 20 on second reset unit drive transmission device is closed with static contact 30, transmission mechanism be reset to lock position it
Afterwards, moving contact is by the controlled motion of the first reset unit, and transmission mechanism is locked in lock position at this time, i.e., transmission mechanism with
It is relatively fixed between holder, there is a fixed interval (FI) between dynamic and static contact and the gap is larger, therefore avoid in the prior art
Reset button causes dynamic/static contact to be easy the technological deficiency of scaling loss, extends service life when pressing not in place；In addition, most
The driving force for pushing moving contact 20 and static contact 30 to be connected eventually is implemented by the second reset unit, with the pressing dynamics of user without
It closes, no matter user is pressed with which kind of dynamics, extrusion damage will not be all caused to dynamic/static contact, is further extended using the longevity
Life.
The transmission mechanism of the present embodiment include the first rotating member 1 being pivotally connected by first rotating shaft 11 and the second rotating member 2 such as
Shown in Fig. 6, the first rotating member 1 in the present embodiment is a flat-shaped part, wherein far from static contact 30 on the first rotating member 1
Side is equipped with the second shaft 12 being articulated on holder 3, and the middle part of the first rotating member 1 is equipped with the connection of installation first rotating shaft 11
Hole, first rotating shaft 11 pass through after the connecting hole on the first rotating member 1 its both ends be inserted into respectively two on the second rotating member 2 it is logical
Hole is achieved in the mutual pivot joint of the first rotating member 1 and the second rotating member 2, allows the second rotating member 2 relative to the first rotating member
1 rotation, wherein the second shaft 12 is arranged with the interval of first rotating shaft 11, the second shaft 12 is the first rotating member 1 and the second rotating member 2
Offer support is provided.
As shown in fig. 6, there are two the first, second rotations of the connection of angle in obtuse angle for the second rotating member 2 tool in the present embodiment
Pivoted arm, be equipped between the first and second rotating arm allow first rotating shaft 11 by through-hole, wherein first rotating arm 21 is close to static contact
30 ends, set there are two, two first rotating arms 21 are respectively arranged in the front and rear sides (front and back of the first rotating member 1 when assembly
To referring to the direction parallel with the axis of first rotating shaft 11), set respectively on two first rotating arms 21 of the second rotating member 2 have it is tactile
First 20.As shown in Figure 3-4, the second rotating arm 22 of the second rotating member 2 is located at the top of the first rotating member 1, and is resetted with first
Unit abuts against.
As shown in figure 3, first reset unit of the present embodiment includes push rod 5 and the resetting spring 51 that is sheathed on push rod 5,
Push rod 5 is movably connected on holder 3, and one end exposes to the shell 7 of earth leakage protective device so that user can implement to operate to it,
The other end is abutted against with the second rotating arm 22, and wherein push rod 5 is installed on by resetting spring 51 between push rod 5 and holder 3, is resetted
Spring 51 is resetted for controlling push rod 5 not automatic after by outer force effect upwards.
As shown in figure 4, the second reset unit in the present embodiment is spring 23, the spring 23 be set to the second rotating arm 22 with
Between first rotating member 1, as shown in figs. 4 and 6, the right end bottom of the second rotating arm 22 is equipped with the installation for fixed spring 23
Seat, interior the first protrusion equipped with 23 end of fixed spring of groove of mounting base, the right end of corresponding first rotating member 1 are also set
There is the second protrusion of fixed spring 23, as shown in figure 4, spring 23 is fixedly installed between the first protrusion and the second protrusion.Spring
23 the second rotating arm 22 turn to it is as shown in Figure 7 contacted with the first rotating member 1 when accumulation of energy, moved in the first rotating member 1
It lock position and releases energy (referring to attached drawing 9) after removing the external force being applied on push rod 5, spring 23 is in push rod 5 not to second
Rotating member 2 drives the second rotating member 2 to be revolved counterclockwise relative to the first rotating member 1 for fulcrum with first rotating shaft 11 after applying external force
Turn, thus moving contact 20 of the driving positioned at 2 end of the second rotating member is closed with the static contact 30 on holder 3.
In the present embodiment, as seen in figs. 5-6, the drive block opposite with the first rotating member 1 is additionally provided on first rotating arm 21
24, when electric leakage, the first rotating member 1 passes through drive block 24 and drives dynamic/static contact separation
As shown in Figures 9 and 10, the protection location of the present embodiment includes the locking bar 6 for being articulated in holder 3, locking bar resetting spring
61, it is controlled by the dynamic iron core 62 and elastic component 63 of control circuit, wherein locking bar as shown in Figure 76, which is equipped with, is fixedly connected on branch
The shaft of frame 3, locking bar 6 can rotate around the shaft, and locking bar resetting spring 61 is sheathed in shaft, and one end is fixed on locking bar 6, another
Holder 3 is fixed at end, and it is automatically inverse that locking bar resetting spring 61 is used for the driving locking bar when dynamic iron core 62 does not apply active force to locking bar 6
Hour hands rotation restores to lock position.In the present embodiment locking bar 6 be accordingly equipped on the contact end of the first rotating member 1 it is mutual
The lock tooth 64 of cooperation, as shown in FIG. 11 and 12, holder 3 are equipped with the stopper 31 for limiting transmission mechanism turned position, when
External force is moved to by the first rotating member 1 of the first reset unit drive transmission device when being contacted with stopper 31, due to blocking
The position-limiting action of block 31, the first reset unit can not continue drive transmission device movement, after removing external force, the first rotating member
Moved under the active force of elastic component 63 with 6 locking of locking bar, the first rotating member 1 can by 6 locking of locking bar with as shown in FIG. 8 and 9
Lock position.As deformation design scheme, the mutually matched lock toothing of locking bar and the first rotating member may be designed in
When making the first reset unit that the first rotating member be driven to turn to locking bar locking, driving the first rotating member 1 movement cannot be further continued for.
As shown in Fig. 5 and Fig. 7, elastic component 63 is set between holder 3 and the first rotating member 1, for being rotated to first when locking bar 6
Drive transmission device is detached from lock position after part unlock, and elastic component 63 is spring in the present embodiment.Referring to attached drawing 3,5,7, first
The left end of rotating member 1 is equipped with mounting base, and the first protrusion of 63 end of fixed elastic component is equipped in mounting base, corresponding
Holder 3 is equipped with second protrusion of fixed elastic component the other end, and elastic component 63 is fixed between the first, second protrusion.
The movable end of dynamic iron core 62 is connected to locking bar 6 for driving locking bar 6 to implement protection act, wherein such as in the present embodiment
Coil rack, the inner cavity that coil rack leads in having are equipped in holder 3 shown in Figure 10, dynamic iron core 62 is movably mounted at inner cavity
In, and the setting corresponding with the end of locking bar 6 of the movable end of dynamic iron core 62.It is arranged with tripping coil 66 in dynamic iron core 62, threads off
Coil 66 is electrically connected with control circuit, and control circuit controls the break-make of electric current in tripping coil 66.Dynamic iron core 62 exposes to inner cavity
End sleeve be equipped with dynamic iron core spring 65, dynamic iron core spring 65 always applies into Figure 10 dynamic iron core the active force in left side.
By the way that protection location is arranged, in normal use, locking bar 6 and the first rotating member 1 coordinate locking, at this time control circuit
It controls tripping coil 66 and is powered generation magnetic field to dynamic iron core application active force, it is ensured that dynamic iron core 62 overcomes the bullet of dynamic iron core spring 65
Power right side into Figure 10 is shunk, and dynamic iron core spring 65 is in energy accumulating state；When leak current fault occurs, control circuit controls trip line
66 power-off of circle, at this time magnetic field disappearance, magnetic field disappear to the active force that dynamic iron core 62 applies, the release preparation power of dynamic iron core spring 65,
The driving left direction into Figure 10 of dynamic iron core 62 moves, and dynamic iron core 62 contacts with locking bar 6 and locking bar 6 is driven to turn clockwise around the shaft
It is dynamic, so that the lock tooth on lock tooth and the first rotating member 1 thereon is detached from and realize unlock, since the first rotating member 1 is by elastic component 63
Driving, the first rotating member rotates clockwise around the second shaft 12, and the first rotating member 1 drives the drive on the second rotating member 2 at this time
Motion block 24 makes first rotating arm 21 be rotated clockwise together about the second shaft 12, to the moving contact on the second rotating member 2 of driving
20 detach disconnection with static contact 30, so that load circuit powers off, realize leakage protection.The earth leakage protective of the present embodiment
Device further includes the instruction unit 14 that indicating transmission is in lock position, and instruction unit 14 as shown in Figure 6 is set to transmission mechanism
It is rotated with the rotation of the first rotating member 1 close to one end of lock tooth 64, instruction unit 14 on first rotating member 1.As shown in Fig. 2,
It is reserved on circuit board so that the through-hole that instruction unit is passed through and moved.
As illustrated in fig. 1 and 2, earth leakage protective device further includes shell 7, and shell 7 is equipped with the through-hole for allowing push rod 5 to stretch out,
And the window 71 of display instruction unit 14, when the first rotating member 1 is in lock position with 6 locking of locking bar, instruction unit at this time
14 just rotate to the position that can be shown in window 71.Operating personnel intuitively can learn that electric leakage is protected by watch window 71
The working condition of protection unit, improves security performance.
The operation principle of the earth leakage protective device of the present embodiment is：
When leak current fault occurs：
Control circuit controls tripping coil 66 and powers off, and the magnetic field in tripping coil disappears at this time, and dynamic iron core 62 is applied in magnetic field
The active force added disappears therewith, therefore the left direction into Figure 10 under the action of dynamic iron core spring 65 of dynamic iron core 62 moves, and moves
Iron core 62 contacts with locking bar 6 and locking bar 6 is driven to be rotated clockwise around its shaft, it is made to be unlocked with the first rotating member 1.Due to first
Rotating member 1 is rotated clockwise, and pass through the driving on first rotating arm 21 by the driving of elastic component 63 around the second shaft 12
Block 24 drives the second rotating member 2 to be rotated clockwise together about the second shaft 12, to the moving contact 20 on the second rotating member 2 of driving
Disconnection is detached with static contact 30, so that down circuitry, implements protection act.
When resetting operation：
First stage：Operator presses down on push rod 5, and push rod 5 moves down, the second rotation of the second rotating member 2 of driving
Arm 22 is rotated clockwise around first rotating shaft 11, and the second rotating member 2 is relative to the first rotation clockwise of rotating member 1 in the first phase
Turn, therefore moving contact 20 is driven to be moved to the direction far from static contact 30.
Second stage：When contacting with the first rotating member 1 in the rotation to such as Fig. 7 of the second rotating arm 22, continue to press at this time
Push rod 5, push rod 5 continue to move downward, and since the second rotating member 2 is bonded with the first rotating member 1, push rod 5 moves downward simultaneously
Drive the first, second rotating member to be rotated counterclockwise together about the second shaft 12, until the first rotating member 1 turn to on holder
Stopper contacts, and push rod 5 moves at lower limit position at this time, and operator can not be further continued for pressing down on, when operator unclamps
After push rod 5, the first rotating member 1 is clockwise to the lock tooth in 1 left side of the first rotating member in Fig. 8 under the action of elastic component 63
64 coordinate locking with the lock tooth on locking bar 6, in this second stage, since the first and second rotating member rotates counterclockwise jointly,
Second rotating member 2 drives moving contact 20 to be moved closer to static contact 30, but is contacted with stopper 31 when being moved to the first rotating member 1
When, moving contact 20 can not be further continued for it is close to static contact 30, and at this time between dynamic/static contact still have larger gap, there is no because
The breakdown risk of close contact.
Phase III：Since the first rotating member 1 can not be moved by 6 locking of locking bar, spring 23 can only push second
Rotating member 2 is rotated counterclockwise around first rotating shaft 11, is thus driven moving contact 20 to be moved to static contact 30 and is closed；During this due to
Driving force is applied by spring 23, and the prestocking power of spring script is stablized, and can be made by calculating or the suitable spring of experimental selection
Its prestocking power appropriate, therefore its power released is also stablized relatively, i.e., will not apply excessive pressure to moving contact.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes, especially similar dynamic/static contact has first relatively heterodromous mechanism in reseting procedure.There is no need and unable to right
All embodiments are exhaustive.And obvious changes or variations extended from this are still in the protection of the present invention
Among range.
Claims (9)
1. a kind of earth leakage protective device comprising：
Holder (3) which is provided with the static contact (30) for being connected to load circuit；
Transmission mechanism, which is provided with the moving contact (20) being correspondingly arranged with the static contact (30), and the transmission mechanism activity connects
It is connected between the first reset unit and protection location, and it has the lock position for coordinating locking with the protection location；
Characterized by further comprising：
Actuating unit comprising drive the protection location of dynamic and static contact separation when electric leakage, and drive dynamic and static contact extensive
The first reset unit and the second reset unit for having pre-stored power, second reset unit by outer power drive be connected again
On the transmission mechanism, the protection location and the first reset unit are installed on the holder (3) and the transmission mechanism
Between；
First reset unit drives the transmission mechanism to be reset to the lock position, and second reset unit drives institute
The moving contact (20) stated on transmission mechanism is closed with the static contact (30)；
By first reset unit driving before the transmission mechanism moves to the lock position, the moving contact
(20) have to the movement far from the static contact (30) direction.
2. earth leakage protective device according to claim 1, it is characterised in that：The transmission mechanism includes passing through first rotating shaft
(11) the first rotating member (1) and the second rotating member (2) being pivotally connected, there are two second rotating member (2) tools be arranged in obtuse angle in
First, second rotating arm of first rotating shaft (11) both sides, wherein the first rotating arm (21) close to the static contact (30)
Equipped with the moving contact (20), the side far from the static contact (30) is equipped with and is connected to institute on first rotating member (1)
The second shaft (12) on holder (3) is stated, second shaft (12) is arranged with the first rotating shaft (11) interval.
3. earth leakage protective device according to claim 2, it is characterised in that：Be additionally provided on the first rotating arm (21) with
The opposite drive block (24) of first rotating member (1), when electric leakage, first rotating member (1) passes through the drive block (24)
Drive dynamic/static contact separation.
4. according to earth leakage protective device described in Claims 2 or 3, it is characterised in that：First reset unit includes push rod (5)
With the resetting spring (51) being sheathed on the push rod (5), the push rod (5) be movably connected on the holder (3) and with it is described
Second rotating arm (22) abuts against, and the resetting spring (51) controls the push rod (5) and do not automatically reset after by pressed by external force.
5. according to the earth leakage protective device described in claim 2-4 any one, it is characterised in that：Second reset unit is
Spring (23), the spring (23) are set between second rotating arm (22) and first rotating member (1).
6. according to the earth leakage protective device described in claim 2-5 any one, it is characterised in that：The protection location includes pivot
It is connected to the locking bar (6), locking bar resetting spring (61), the dynamic iron core (62) and elasticity for being controlled by control circuit of the holder (3)
The movable end of part (63), the dynamic iron core (62) is connected to the locking bar (6), and the locking bar (6) is to first rotating member (1)
Locking, the elastic component (63) is coordinated to be set between the holder (3) and first rotating member (1) for driving described first
Rotating member (1) is detached from the lock position.
7. earth leakage protective device according to claim 6, it is characterised in that：The locking bar (6) and first rotating member
(1) the lock tooth (64) worked in coordination accordingly is equipped on.
8. according to the earth leakage protective device described in claim 2-7 any one, it is characterised in that：The earth leakage protective device is also
Including indicating that the transmission mechanism is in the instruction unit (14) of the lock position, the instruction unit (14) is set to the driver
On structure.
9. according to the earth leakage protective device described in claim 3-8 any one, it is characterised in that：The earth leakage protective device is also
Including shell (7), the shell (7) is equipped with the through-hole for allowing the push rod (5) to stretch out, and the display instruction unit (14)
Window (71), when the transmission mechanism is in lock position, the instruction unit (14) is shown in the window (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810391929.XA CN108417468B (en) | 2018-04-27 | Leakage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810391929.XA CN108417468B (en) | 2018-04-27 | Leakage protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108417468A true CN108417468A (en) | 2018-08-17 |
| CN108417468B CN108417468B (en) | 2024-05-31 |
Family
ID=
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824734A (en) * | 2014-03-13 | 2014-05-28 | 科都电气有限公司 | Electric leakage protector |
| CN205789792U (en) * | 2015-10-30 | 2016-12-07 | 中山市格瑞斯电器有限公司 | Ground wire can the tripping mechanism of earth leakage protective device of disjunction |
| CN208489165U (en) * | 2018-04-27 | 2019-02-12 | 浙江中讯电子有限公司 | A kind of earth leakage protective device |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824734A (en) * | 2014-03-13 | 2014-05-28 | 科都电气有限公司 | Electric leakage protector |
| CN205789792U (en) * | 2015-10-30 | 2016-12-07 | 中山市格瑞斯电器有限公司 | Ground wire can the tripping mechanism of earth leakage protective device of disjunction |
| CN208489165U (en) * | 2018-04-27 | 2019-02-12 | 浙江中讯电子有限公司 | A kind of earth leakage protective device |
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