CN208489165U - A kind of earth leakage protective device - Google Patents
A kind of earth leakage protective device Download PDFInfo
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- CN208489165U CN208489165U CN201820617941.3U CN201820617941U CN208489165U CN 208489165 U CN208489165 U CN 208489165U CN 201820617941 U CN201820617941 U CN 201820617941U CN 208489165 U CN208489165 U CN 208489165U
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- rotating member
- static contact
- transmission mechanism
- reset
- protective device
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Abstract
The utility model provides a kind of earth leakage protective device comprising: bracket 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 with protection location cooperation locking；Further include: power mechanism; it 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, protection location and the first reset unit are installed on bracket；Since the gap between dynamic and static contact is after transmission mechanism is reset to lock position, the influence of the first reset unit is not will receive, therefore avoiding reset button in the prior art, when pressing not in place, dynamic and static contact is easy the technological deficiency of scaling loss, extends service life.
Description
Technical field
The utility model relates to electrical protection equipment technical fields, and in particular to a kind of earth leakage protective device.
Background technique
Earth leakage protective device be equipment occur leak current fault when, route can be disconnected in time, thus 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 separates with static contact, tripping coil component includes tripping coil, iron core, abutting with iron core for mandrel bottom is arranged in
Second back-moving spring and the card that can cooperate 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 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, moves moving contact 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 operator drives 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, operator has 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 the phenomenon that of short duration connection disjunction again occurs in dynamic/static contact, it is also easy to cause dynamic/static contact scaling loss, has shortened sound touching
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-colored touching
Point, has shortened service life.
Utility model content
Therefore, the technical problem to be solved by the present invention is to overcome the reset button of earth leakage protective device in the prior art
When pressing not in place, dynamic/static contact is easy scaling loss, the short technological deficiency of service life, to provide, a kind of structure is simple, makes
With the earth leakage protective device that the service life is long.
For this purpose, the utility model provides a kind of earth leakage protective device comprising:
Bracket 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 with protection location cooperation locking；
Further include:
Power mechanism 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 bracket；
The first reset unit drive transmission device is reset to lock position, and second reset unit drives the biography
Moving contact and the static contact on motivation structure are closed；By the driving of first reset unit, moved in the transmission mechanism
To 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 two sides, wherein
It is equipped with the moving contact close to the first rotating arm of the static contact, the one of the separate static contact on first rotating member
Side is equipped with the second shaft being connected on the bracket, and second shaft and the first rotating shaft interval are arranged.
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 and static contact separation 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 bracket and abut against with second rotating arm, push away described in the reset 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 bracket, locking bar reset spring with
And be controlled by the dynamic iron core of the control circuit, the movable end of the dynamic iron core is connected to the locking bar, the locking bar with it is described
First rotating member cooperates locking, further includes being used to drive the driver set between the bracket and first rotating member
Structure is detached from the elastic component of the lock position.
As a preferred embodiment, the lock tooth worked in coordination accordingly is equipped on the locking bar and first rotating member.
As a preferred embodiment, the earth leakage protective device further includes indicating that the 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 the window of the display 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 utility model, has the advantage that
1. the earth leakage protective device of the utility model, including bracket, transmission mechanism and power mechanism, transmission mechanism, thereon
Equipped with the moving contact being correspondingly arranged with static contact, transmission mechanism is movably connected between the first reset unit and protection location, and
It has the lock position with protection location cooperation locking；Power mechanism includes the protection that dynamic and static contact separation is driven when electric leakage
Unit drives dynamic and static contact to restore the first reset unit of conducting, and the second reset unit on transmission mechanism.It is logical
Setting protection location and the second reset unit are crossed, when carrying out resetting operation, since the driving by the first reset unit is being driven
Before mechanism kinematic to lock position, moving contact has to the movement far from the static contact direction, and behind lock position,
First reset unit can not continue drive transmission device movement, still have biggish gap between dynamic/static contact at this time, therefore
There is no the risks of the breakdown because caused by gap is smaller, extend service life；Furthermore external force is driven by the first reset unit
Dynamic transmission mechanism can not be further continued for drive transmission device movement after being reset to lock position, drive thereafter through the second reset unit
Moving contact and static contact on dynamic transmission mechanism are closed, since the second reset unit has pre-stored power, push moving contact with it is quiet
The driving force of contact conducting is the pre-stored power of the second reset unit, unrelated with the applied force of user, no matter user is with what
Kind dynamics pressing, extrusion damage will not be all caused to dynamic/static contact, further extends service life.
2. the earth leakage protective device of the utility model, transmission mechanism include the first rotating member being pivotally connected by first rotating shaft and
Second rotating member, there are two be arranged in obtuse angle in the first, second rotating arm of first rotating shaft two sides, wherein leaning on the second rotating member tool
The first rotating arm of nearly static contact is equipped with moving contact, and the side far from static contact, which is equipped with, on the first rotating member is connected on bracket
The second shaft, the second shaft and first rotating shaft interval are arranged.When carrying out resetting operation, the second rotating arm resets single first
It rotates under the driving of member to the direction close to the first rotating member, is contacted with the first rotating member, and the first rotating member is driven to be reset to
Lock position, then the moving contact on the second reset unit drive transmission device and static contact are closed, and the first rotating member moves to
Before lock position, moving contact is first mobile to the direction far from static contact, then to close to the movement of the direction of static contact, dynamic/static contact
It is able to maintain biggish gap by remaining unchanged before the driving of the second reset unit, therefore there is no because caused by gap is smaller
The risk of breakdown extends service life, and above-mentioned first rotating member and the second rotating member are ingenious in design, and structure is simple, assembly
It is convenient.
3. the earth leakage protective device of the utility model, the second reset unit is spring, the spring be set to the second rotating arm with
Between first rotating member, due to having pre-stored power after spring-compressed, spring turns to and the first rotation in the second rotating arm
Accumulation of energy when part contacts moves lock position in the first rotating member and discharges pre-stored power when removing external force, driving moving contact with it is quiet
Contact conducting, therefore the driving force for pushing moving contact to be connected with static contact is the second reset unit in storage power, with user
Applied force it is unrelated, though user with which kind of dynamics pressing, will not all cause extrusion damage to dynamic/static contact, further extend
Service life.
4. the earth leakage protective device of the utility model, protection location includes the locking bar for being articulated in bracket, locking bar reset 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 locking bar and the first rotating member cooperate locking,
It further include set on the elastic component for being detached from lock position for drive transmission device between bracket and the first rotating member.Pass through setting
Protection location, in normal use, locking bar and the first rotating member cooperate locking, and when leak current fault occurs, dynamic iron core drives locking bar
It is unlocked with the first rotating member, 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 utility model, earth leakage protective device further includes that indicating transmission is in lock position
Instruction unit, instruction unit is set on transmission mechanism, and earth leakage protective device further includes shell, and shell is equipped with the window of display instruction unit
Mouthful, when transmission mechanism is in lock position, instruction unit is shown in window.Operator can intuitively pass through watch window
The working condition for learning earth leakage protective device, improves security performance.
Detailed description of the invention
In order to illustrate more clearly of the technical solution in the prior art or specific embodiment of the present invention, below to existing
There is attached drawing used in technology or specific embodiment description to be briefly described, it should be apparent that, skill common for this field
For art personnel, without creative efforts, it is also possible to obtain other drawings 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 bracket.
Figure 11 is another structural schematic diagram that Fig. 9 turns over an arrisdefect degree.
Figure 12 is the structural schematic diagram of bracket.
Appended drawing reference: 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, bracket；30, static contact；31,
Stopper；5, push rod；51, reset spring；6, locking bar；61, locking bar reset spring；62, dynamic iron core；63, elastic component；64, it locks
Tooth；65, dynamic iron core spring；66, tripping coil；7, shell；71, window.
Specific embodiment
The technical solution of the utility model is described with reference to the accompanying drawings of the specification, it is clear that following embodiments are not
It is the embodiment of the utility model whole.Based on the utility model described embodiment, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of other creative works is made, the protection scope of the utility model is belonged to.
It should be noted that term " first ", " second " are used for description purposes only in the description of the present invention, and
It cannot be understood as indicating or implying relative importance.
Embodiment
The present embodiment provides a kind of earth leakage protective devices, as shown in figure 3, comprising: bracket 3, transmission mechanism and engine
Structure, wherein bracket 3 is 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；Power mechanism 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 bracket 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 moving contact 20 and static contact 30 on drive transmission device are closed；
By the driving of the first reset unit, before transmission mechanism moves to lock position, moving contact 20 has to far from static contact 30
The movement in direction.The earth leakage protective device of the present embodiment is prestored by the way that the first reset unit by outer power drive is arranged and has
The second reset unit of Chu Li, when carrying out Manual reset operation, external force is resetted by the first reset unit drive transmission device
To lock position, the first reset unit be can't continue to exercise, and is still had biggish gap between dynamic/static contact at this time, is led at this time
The moving contact 20 and static contact 30 crossed on the second reset unit drive transmission device are closed, and are reset to lock position in transmission mechanism
Later, moving contact is not by the control campaign of the first reset unit, and transmission mechanism is locked in lock position, i.e. transmission mechanism at this time
It is relatively fixed between bracket, there is a fixed interval (FI) between dynamic and static contact and the gap is larger, therefore avoid the prior art
Middle 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,
The final driving force for pushing moving contact 20 and static contact 30 to be connected is implemented by the second reset unit, the pressing dynamics with user
It is unrelated, no matter user will not be caused extrusion damage to dynamic/static contact, further be extended using the longevity with the pressing of which kind of dynamics
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 bracket 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 its both ends after the connecting hole on the first rotating member 1 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 is equipped with the through-hole for allowing first rotating shaft 11 to pass through between the first and second rotating arm, and 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 on two first rotating arms 21 of the second rotating member 2 has touching respectively
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 resets with first
Unit abuts against.
As shown in figure 3, first reset unit of the present embodiment includes push rod 5 and the reset spring 51 that is sheathed on push rod 5,
Push rod 5 is movably connected on bracket 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 between push rod 5 and bracket 3 by reset spring 51, is resetted
Spring 51 is resetted for controlling push rod 5 not automatic after by external force 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 the groove of mounting base, the right end of corresponding first rotating member 1
The second protrusion equipped with fixed spring 23, as shown in figure 4, spring 23 is fixedly installed between the first protrusion and the second protrusion.Bullet
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, the first rotating member 1 move
It releases energy to lock position and after removing the external force being applied on push rod 5 (referring to attached drawing 9), spring 23 is in push rod 5 not to
Two rotating members 2 drive the second rotating member 2 counterclockwise relative to the first rotating member 1 for fulcrum with first rotating shaft 11 after applying external force
Rotation, thus driving is located at the moving contact 20 of 2 end of the second rotating member and the static contact 30 on bracket 3 is closed.
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 drives dynamic/static contact separation by drive block 24
As shown in Figures 9 and 10, the protection location of the present embodiment includes the locking bar 6 for being articulated in bracket 3, locking bar reset spring
61, it is controlled by the dynamic iron core 62 and elastic component 63 of control circuit, wherein the locking bar 6 as shown in Fig. 7, 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 reset spring 61 is sheathed in shaft, and one end is fixed on locking bar 6, another
Bracket 3 is fixed at end, and it is automatically inverse that locking bar reset 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, bracket 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 contacting with stopper 31, due to stopping
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 and 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 be 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 bracket 3 and the first rotating member 1, for rotating when locking bar 6 to first
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 fixed 63 end of elastic component is equipped in mounting base, corresponding
Bracket 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
Be equipped with coil rack in bracket 3 shown in Figure 10, coil rack have in the inner cavity that leads to, 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 on-off 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 applies to dynamic iron core into Figure 10 the active force in left side always.
By the way that protection location is arranged, in normal use, locking bar 6 and the first rotating member 1 cooperate 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, magnetic field disappears at this time, and magnetic field disappears to the active force that dynamic iron core 62 applies, and dynamic iron core spring 65 discharges preparation power,
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, it is detached from the lock tooth on lock tooth and the first rotating member 1 thereon and realizes 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 rotates clockwise first rotating arm 21 together about the second shaft 12, thus the moving contact on the second rotating member 2 of driving
20 separate 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
Close to one end of lock tooth 64 on first rotating member 1, instruction unit 14 is rotated with the rotation of the 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.Operator intuitively can learn that electric leakage is protected by watch window 71
The working condition of protection unit, improves security performance.
The working principle of the earth leakage protective device of the present embodiment are as follows:
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 rotate clockwise around its shaft, unlocks it with the first rotating member 1.Due to first
Driving of the rotating member 1 by elastic component 63 is rotated clockwise around the second shaft 12, and passes through the drive on first rotating arm 21
Motion block 24 drives the second rotating member 2 to rotate clockwise together about the second shaft 12, thus the moving contact on the second rotating member 2 of driving
20 separate disconnection 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 move to the direction far from static contact 30.
Second stage: when the rotation of the second rotating arm 22 is contacted into such as Fig. 7 with the first rotating member 1, 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 is moved downward simultaneously
Drive the first, second rotating member to rotate counterclockwise together about the second shaft 12, until the first rotating member 1 turn to on bracket
Stopper contact, push rod 5 moves at lower limit position at this time, and operator can not be further continued for pressing down on, when operator pine
After opening push rod 5, the first rotating member 1 is clockwise to the lock in 1 left side of the first rotating member in Fig. 8 under the action of elastic component 63
Lock tooth on tooth 64 and locking bar 6 cooperates locking, in this second stage, since the first and second rotating member rotates counterclockwise jointly, because
This second rotating member 2 drives moving contact 20 to move closer to static contact 30, but connects when being moved to the first rotating member 1 with stopper 31
When touching, 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, do not deposit
In the risk breakdown because 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 move 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 relatively stable, 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 utility model
Among protection scope.
Claims (9)
1. a kind of earth leakage protective device comprising:
Bracket (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 with protection location cooperation locking；
Characterized by further comprising:
Power mechanism 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 by outer power drive for being connected again and the second reset unit for having pre-stored power, second reset unit
On the transmission mechanism, the protection location and the first reset unit are installed on the bracket (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) and the static contact (30) stated on transmission mechanism are closed；
By the driving of first reset unit, 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
The first rotating arm (21) and the second rotating arm (22) of first rotating shaft (11) two sides, wherein close to the static contact (30)
First rotating arm (21) is equipped with the moving contact (20), the one of separate static contact (30) on first rotating member (1)
Side is equipped with the second shaft (12) being connected on the bracket (3), between second shaft (12) and the first rotating shaft (11)
Every setting.
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)
Dynamic and static contact is driven to separate.
4. the earth leakage protective device according to Claims 2 or 3, it is characterised in that: first reset unit includes push rod (5)
With the reset spring (51) being sheathed on the push rod (5), the push rod (5) be movably connected on the bracket (3) and with it is described
Second rotating arm (22) abuts against, and the reset spring (51) controls the push rod (5) and do not automatically reset after by pressed by external force.
5. earth leakage protective device according to claim 4, it is characterised in that: second reset unit is spring (23),
The spring (23) is set between second rotating arm (22) and first rotating member (1).
6. earth leakage protective device according to claim 5, it is characterised in that: the protection location includes being articulated in the branch
The locking bar (6) of frame (3), locking bar reset spring (61), the dynamic iron core (62) and elastic component (63) for being controlled by control circuit, it is described
The movable end of dynamic iron core (62) is connected to the locking bar (6), and the locking bar (6) and first rotating member (1) cooperate locking, institute
Elastic component (63) are stated to be set between the bracket (3) and first rotating member (1) for driving first rotating member (1) de-
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. earth leakage protective device according to claim 7, it is characterised in that: the earth leakage protective device further includes instruction institute
The instruction unit (14) that transmission mechanism is in the lock position is stated, the instruction unit (14) is set on the transmission mechanism.
9. earth leakage protective device according to claim 8, it is characterised in that: the earth leakage protective device further includes shell
(7), the shell (7) is equipped with the through-hole for allowing the push rod (5) to stretch out, and the window of the display instruction unit (14)
(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 |
|---|---|---|---|
| CN201820617941.3U CN208489165U (en) | 2018-04-27 | 2018-04-27 | A kind of earth leakage protective device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820617941.3U CN208489165U (en) | 2018-04-27 | 2018-04-27 | A kind of earth leakage protective device |
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| Publication Number | Publication Date |
|---|---|
| CN208489165U true CN208489165U (en) | 2019-02-12 |
Family
ID=65252702
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820617941.3U Active CN208489165U (en) | 2018-04-27 | 2018-04-27 | A kind of earth leakage protective device |
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| Country | Link |
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| CN (1) | CN208489165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417468A (en) * | 2018-04-27 | 2018-08-17 | 浙江中讯电子有限公司 | A kind of earth leakage protective device |
-
2018
- 2018-04-27 CN CN201820617941.3U patent/CN208489165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417468A (en) * | 2018-04-27 | 2018-08-17 | 浙江中讯电子有限公司 | A kind of earth leakage protective device |
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