CN208570481U - Self-latching relay - Google Patents
Self-latching relay Download PDFInfo
- Publication number
- CN208570481U CN208570481U CN201821187431.3U CN201821187431U CN208570481U CN 208570481 U CN208570481 U CN 208570481U CN 201821187431 U CN201821187431 U CN 201821187431U CN 208570481 U CN208570481 U CN 208570481U
- Authority
- CN
- China
- Prior art keywords
- self
- armature
- locking mechanism
- electromagnetic part
- normally opened
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electromagnets (AREA)
Abstract
Utility model discloses a kind of self-latching relay, including pedestal, armature and the electromagnetic part being set in turn on pedestal, support rod, self-locking mechanism and normally opened contact portion；Armature is arranged on support rod；When electromagnetic part is powered, one end of armature is pull-in in electromagnetic part, and the other end control self-locking mechanism of armature is in self-locking or unlocked state；Self-locking mechanism is set between the other end of armature and normally opened contact portion；At work, by power on/off of electromagnetic part, so that armature control self-locking mechanism is kept self-locking or unlocked state, normally opened contact portion is allowed to remain closed or disconnect.Utility model only needs primary to the of short duration power on/off of electromagnetic part adhesive armature, being switched on or switched off for circuit can be realized using self-locking mechanism, and self-locking or unlocked state is kept before be powered next time, so that power consumption be effectively reduced, eliminates coil and work long hours caused security risk.
Description
Technical field
Utility model is related to relay technical field more particularly to a kind of self-latching relay.
Background technique
What existing electromagnetic relay was generally made of iron core, coil, armature and contact reed etc..As long as in coil two
End adds certain voltage, will pass through certain electric current in coil, to generate galvanomagnetic-effect, armature will be inhaled in electromagnetic force
The pulling force of return spring is overcome to be drawn to iron core under the action of drawing, so that the movable contact with moving armature and stationary contact (normally opened contact) are inhaled
It closes.It needs persistently to be powered to coil, ability holding armature actuation allows relay to work.It is will lead in this way because coil leads to for a long time
There is power consumption height, the short problem of coil service life in electricity；And there is also security risks caused by coil heat dissipation not in time.
Utility model content
The self-latching relay that utility model provides, main purpose be to overcome existing electromagnetic relay need persistently to
Coil energization makes relay work, caused by high energy consumption and there are problems that security risk.
In order to solve the above technical problems, utility model adopts the following technical scheme that
A kind of self-latching relay, including pedestal, armature and the electromagnetic part being set in turn on pedestal, support rod, from
Latch mechanism and normally opened contact portion；
The armature is arranged on support rod；In electromagnetic part power-off, one end of the armature is located in the electromagnetic part
Side, the other end of the armature are located at the side of the self-locking mechanism；When electromagnetic part is powered, one end of the armature is pull-in on
In the electromagnetic part, the other end of the armature controls the self-locking mechanism and is in self-locking or unlocked state；
The self-locking mechanism is set between the other end of armature and normally opened contact portion；
At work, by power on/off of the electromagnetic part, the armature control self-locking mechanism is made to keep self-locking or solution
Lock status allows the normally opened contact portion to remain closed or disconnect.
As an embodiment, the self-locking mechanism includes shell, top cap, left tooth post, right tooth post, push rod and answers
Position spring；
The shell setting is on the base；
The left tooth post, in the housing, top cap and right tooth post is arranged in internal slide for fixed setting；The one of the left tooth post
End is equipped with the first limit rib, offers equally distributed limiting slot on another end wall of the left tooth post, adjacent two limiting slot it
Between end face have second level dentation lug boss；
The second limit rib is arranged in the lower end of the top cap, and lower end surface is equipped with equally distributed detent projection portion；
The right tooth post includes the limit rib of ontology, setting on the body with limiting slot cooperation, the limit
The upper end of rib has level-one detent projection portion；The limit rib and limiting slot cooperate, level-one detent projection portion difference
With the detent projection portion and second level dentation raised portion fits；
The push rod is arranged between the right tooth post and normally opened contact portion；
The reset spring is set between push rod and the pedestal, and the reset spring is constantly in compressive state.
As an embodiment, there is lug boss, the reset spring is set to lug boss and institute on the push rod
It states between pedestal.
As an embodiment, the limiting slot is identical with the limit quantity of rib, is 4.
As an embodiment, 90 degree to 120 degree of the tooth tip angle in the detent projection portion.
As an embodiment, the other end of the armature is equipped with strut；
The strut is moved horizontally when the armature is engaged, pushing the top cap of the self-locking mechanism.
As an embodiment, anti-unusual fluctuation spring is equipped between the armature and support rod.
As an embodiment, the normally opened contact portion includes the first leaf spring and is arranged in parallel with first leaf spring
The second leaf spring；
First leaf spring, one end are fixed on the pedestal, and the other end is provided with the first contact；
Second leaf spring, one end are fixed on the pedestal, and the other end is provided with the with first contact cooperation
Two contacts.
As an embodiment, the electromagnetic part includes coil and iron core；
On the base, the coil is arranged in iron core surrounding, described when the coil is powered for the iron core setting
Iron core is attracted the armature.
Compared with prior art, the technical program has the advantage that
The self-latching relay that utility model provides, is arranged self-locking mechanism between armature and normally opened contact portion, utilizes electricity
The lever principle that magnetic portion, armature cooperation support rod are realized, so that at work, by power on/off of electromagnetic part, making armature control
Self-locking mechanism processed keeps self-locking or unlocked state, and normally opened contact portion is allowed to remain closed or disconnect.To be implemented without always to
The coil of electromagnetic part is powered, it is only necessary to and it is primary to the of short duration power on/off of electromagnetic part adhesive armature, it just can control self-locking mechanism and complete certainly
Lock or unlock to realize being switched on or switched off for circuit, and keep self-locking or unlocked state, thus effectively before be powered next time
Power consumption is reduced, coil is eliminated and works long hours caused security risk.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the self-latching relay that utility model embodiment one provides；
Fig. 2 is the structural schematic diagram that self-locking mechanism omits shell in Fig. 1.
In figure: 1, pedestal；2, armature；31, coil；32, iron core；4, support rod；51, shell；52, top cap；53, left tooth
Column；54, right tooth post；55, push rod；56, reset spring；61, the first leaf spring；62, the first contact；63, the second leaf spring；64, second
Contact；7, anti-unusual fluctuation spring；8, strut.
Specific embodiment
Below in conjunction with attached drawing, above-mentioned to utility model and other technical characteristic and advantage are clearly and completely retouched
It states, it is clear that described embodiment is only the section Example of utility model, rather than whole embodiments.
Referring to Fig. 1, the self-latching relay that utility model embodiment one provides, including pedestal 1, armature 2 and successively
It is set to electromagnetic part, support rod 4, self-locking mechanism and normally opened contact portion on pedestal 1；Armature 2 is arranged on support rod 4；?
When electromagnetic part powers off, one end of armature 2 is located above electromagnetic part, and the other end of armature 2 is located at the side of self-locking mechanism；In electromagnetism
When portion is powered, one end of armature 2 is pull-in in electromagnetic part, and the other end control self-locking mechanism of armature 2 is in self-locking or unlock shape
State；Self-locking mechanism is set between the other end of armature 2 and normally opened contact portion；At work, by power on/off of electromagnetic part,
So that armature 2 is controlled self-locking mechanism and keep self-locking or unlocked state, normally opened contact portion is allowed to remain closed or disconnect.
It should be noted that pedestal 1 is made of insulating material, 31 end of coil of electromagnetic part and the contact in normally opened contact portion
End can be welded on pedestal 1.External power supply is electromagnetic part energization by 31 end of coil, and contact end can connect
Follow-up work circuit.Armature 2 can be strip structure, and the middle and upper part of armature 2 is connect with support rod 4, so that armature 2 is with tie point
For the bar rod structure of supporting point.In order to reduce the size of entire self-latching relay, the armature 2 of bending-like, armature 2 can be used
Bending part as the tie point with support rod 4.And the position of bending can be the middle and upper part of armature 2, and the armature 2 after bending
The angle that both ends are formed is obtuse angle.So that armature 2 can make armature 2 and electromagnetic part under the effect of gravity in electromagnetic part power-off
It separates.In order to enhance the reliability resetted after actuation, anti-unusual fluctuation spring 7 can be equipped between armature 2 and support rod 4.It is i.e. anti-
One end of unusual fluctuation spring 7 is fixed on support rod 4, and the other end and armature 2 of anti-unusual fluctuation spring 7 are fixed, utilizes anti-unusual fluctuation spring 7
Try hard to keep and hinder the position of armature 2, after electromagnetic part power-off, armature 2 is made to reset to initial makeup location.In other embodiments,
Position for anti-unusual fluctuation spring 7 is simultaneously not limited, anti-unusual fluctuation spring 7 can be set in the right side of support rod 4 and armature 2 it
Between.
There are two types of use state, respectively self-locking or unlocked states for self-locking mechanism tool, and both states all have holding
Type.The switching of both states is a power on/off by electromagnetic part, give armature 2 switch self-locking mechanism it is self-locking or unlock shape
The control force of state.And normally opened contact portion makes normally opened contact portion be in closure when self-locking mechanism is in self-locking state.Normally opened touching
Point portion makes normally opened contact portion be in normally opened when self-locking mechanism is in the unlocked state.It is above-mentioned using the self-locking of self-locking mechanism or solution
Lock status can realize to control the make and break situation of normally opened contact by diversified forms, can be realized using mechanical structure, can also be with
It is realized using circuit.It is realized if it is using circuit, can be using holding circuit and control circuit is compared and realize.If adopted
With mechanical mechanism, specific use process be can be such that
When needing relay to be attracted, it is only necessary to add suitable amplitude and continue the pulse voltage of width to electromagnetic part, armature 2
It moves to right the other end of armature 2 and by the transmitting of self-locking mechanism with electromagnetic part actuation, makes the contact closure in normally opened contact portion, it is main
Loop works.After pulse voltage terminates output, electromagnetic part is restored to power failure state, and armature 2 resets under gravity, but by
In the self-locking of self-locking mechanism, make contact closure that can be continuously turned on the arrival until next control pulse voltage.Exist in this way
When contact needs long secondary closure, because electromagnetic part does not apply voltage for a long time and would not generate heat yet, solve under certain use environments,
Due to radiate it is bad caused by relay temperature sharply increase and cause relay service life reduce sharply even electromagnetic part line
Circle 31 burns the generation of the imagination.
When needing relay contact to disconnect, then needs to apply again suitable amplitude and continue the pulse voltage of width to electricity
Magnetic portion, armature 2 and electromagnetic part actuation move to right the other end of armature 2 and by the transmitting of self-locking mechanism, make normally opened contact portion
Contact disconnects, and major loop stops working.After the electromagnetic part power-off of relay, armature 2 resets under the effect of gravity, but due to self-locking
The self-locking of mechanism, contact, which disconnects, can be continuously turned off the arrival until next closing pulse voltage.
As long as at work, making armature 2 control self-locking mechanism by power on/off of electromagnetic part and keeping self-locking or unlock shape
State, allows normally opened contact portion to remain closed or disconnect, just can solve existing electromagnetic relay need persistently to the energization of coil 31 make after
Electrical work, caused by high energy consumption and there are problems that security risk.And for the specific of self-locking mechanism and normally opened contact portion
Structure or circuit herein and are not limited.
The self-latching relay that utility model provides, is arranged self-locking mechanism between armature 2 and normally opened contact portion, utilizes electricity
The lever principle that magnetic portion, armature 2 cooperate support rod 4 to realize, so that at work, by power on/off of electromagnetic part, making armature 2
It controls self-locking mechanism and keeps self-locking or unlocked state, normally opened contact portion is allowed to remain closed or disconnect.To be implemented without always
It is powered to the coil 31 of electromagnetic part, it is only necessary to it is primary to the of short duration power on/off of electromagnetic part adhesive armature 2, it is complete just to can control self-locking mechanism
At self-locking or unlock, to realize being switched on or switched off for circuit, and self-locking or unlocked state is kept before be powered next time, thus
It is effectively reduced power consumption, eliminates coil 31 and work long hours caused security risk.
In this present embodiment, mechanical structure is all made of using self-locking mechanism and normally opened contact portion.
Be illustrated in figure 2 the structural schematic diagram that self-locking mechanism omits shell 51, self-locking mechanism include shell 51, top cap 52,
Left tooth post 53, right tooth post 54, push rod 55 and reset spring 56；Shell 51 is arranged on pedestal 1；Left tooth post 53, fixed setting
In shell 51, top cap 52 and right tooth post 54 is arranged in internal slide；One end of left tooth post 53 is equipped with the first limit rib, left tooth post
Equally distributed limiting slot is offered on 53 another end wall, the end face between adjacent two limiting slot has second level detent projection
Portion；The second limit rib is arranged in the lower end of top cap 52, and lower end surface is equipped with equally distributed detent projection portion；Right tooth post 54 includes this
The limit rib with limiting slot cooperation, the upper end for limiting rib have level-one detent projection portion on the body for body, setting；Limit rib and limit
Position slot cooperate, level-one detent projection portion respectively with detent projection portion and second level dentation raised portion fits；The setting of push rod 55 exists
Between right tooth post 54 and normally opened contact portion；Reset spring 56 is set between push rod 55 and pedestal 1, and reset spring 56 is constantly in
Compressive state.
Left tooth post 53 is fixed on motionless in shell 51.It, can be by shell 51 and left tooth post 53 in other embodiments
It is made of one.Top cap 52, right tooth post 54 and push rod 55 can move horizontally in shell 51, and shell 51 can be by detachable
Left and right shell 51 form, facilitate the installation of its internal part.Reset spring 56 is constantly in compressive state, i.e., gives the right side always
The power of tooth post 54 to the left.Push rod 55 is made of insulating material.There is lug boss, reset spring 56 is set to lug boss on push rod 55
Between pedestal 1.Push rod 55 can thus be resetted using reset spring 56.It is of course also possible to be arranged on push rod 55 multistage
Step is just realized.
Level-one detent projection portion can respectively with detent projection portion and second level dentation raised portion fits.Self-locking mechanism is in solution
When lock status, the limit rib of right tooth post 54 is inserted into the limiting slot of left tooth post 53, since reset spring 56 exists, so that push rod 55
It is held down always with right tooth post 54, limit rib cannot be detached from from limiting slot.At this point, level-one detent projection portion and detent projection portion
Cooperation turns left top cap 52 top.And self-locking mechanism gives the power of top cap 52 to the right when being in self-locking state, pushes top cap 52
Right tooth post 54 moves right.The limit rib of right tooth post 54 is detached from from the limiting slot of left tooth post 53, so that level-one detent projection portion
With second level dentation raised portion fits, so that push rod 55 be made to move right；Due to the effect of left 53 second level dentation lug boss of tooth post, make
It obtains level-one detent projection portion to be limited, so that self-locking mechanism is in self-locking state.It should be noted that in the limit of right tooth post 54
When rib is detached from from the limiting slot of left tooth post 53, since level-one detent projection portion and detent projection portion cooperate, in reset spring 56
Under the action of power, the tooth tip in level-one detent projection portion slides from the tooth tip in detent projection portion, to generate one to right tooth post 54
Rotary force, be detached from the limit rib of right tooth post 54 from the limiting slot of left tooth post 53.It, can also be manual in other embodiments
To realize switching.As long as a hand push button is arranged again, hand push button directly controls the actuation or opening of armature 2；It will by armature 2
The top cap 52 that power is transferred to self-locking mechanism can be realized.It forces to close a floodgate by relay when hand push button next time, major loop connects
It is logical.When pressing again, separating brake is forced by the effect of self-locking mechanism, major loop disconnects.
In order to stablize unlock and the self-locking state switching of self-locking mechanism, it is 4 that limiting slot is identical with the limit quantity of rib
It is a.In other embodiments, the quantity of limiting slot and limit rib can be different, but number of the quantity of limiting slot than limiting rib
It measures more.For example, the quantity for limiting rib is 2 or 3 when the quantity of limiting slot is 4.In order to which state switches more stable, tooth
90 degree to 120 degree of the tooth tip angle of shape lug boss.
Since armature 2 and the forced area of top cap 52 are small, in order to improve the stability of power transmitting.On the other end of armature 2
Equipped with strut 8；Strut 8 pushes the top cap 52 of self-locking mechanism to move horizontally when armature 2 is attracted.Strut 8 is connect with armature 2
One end has inclined-plane, so that the other end of strut 8 and top cap 52 are in parallel position.
In this present embodiment, normally opened contact portion may include the first leaf spring 61 and with the first leaf spring 61 disposed in parallel second
Leaf spring 63；First leaf spring 61, one end are fixed on pedestal 1, and the other end is provided with the first contact 62；Second leaf spring 63, one end
It is fixed on pedestal 1, the other end is provided with the second contact 64 with the cooperation of the first contact 62.First leaf spring 61 by push rod 55 to
After right power, deformation can be generated, so that the first contact 62 and the contact of the second contact 64, complete access.And after thrust revocation, the
One leaf spring 61 returns to original position under the action of selfer power, so that the first contact 62 and the second contact 64 separate, it is complete
At open circuit.In other embodiments, the tail end of push rod 55 can be fixedly connected with the first leaf spring 61.So at self-locking mechanism
When self-locking state, push rod 55 pushes the first deformation to the right of leaf spring 61 to contact the first contact 62 and the second contact 64.And certainly
When latch mechanism is in the unlocked state, push rod 55 pulls the first deformation to the left of leaf spring 61 to divide the first contact 62 and the second contact 64
From to improve the reliability and stability that normally opened contact portion uses.It, can be by the first contact 62 and in other embodiments
Closed type is changed into two contacts 64 or opening and closing is combined.And the quantity of contact can increase or increasing section product, to increase
Big conductive capability.
In this present embodiment, electromagnetic part may include coil 31 and iron core 32；Iron core 32 is arranged on pedestal 1, coil 31
Setting is in 32 surrounding of iron core, when coil 31 is powered, 32 adhesive armature 2 of iron core.Only need it is primary to the of short duration power on/off of coil 31,
It is primary that 32 adhesive armature 2 of iron core can be completed.
Although utility model has been described by way of example and in terms of the preferred embodiments, but it is not for limiting utility model, Ren Heben
Field technical staff may be by the methods and technical content of the disclosure above in the spirit and scope for not departing from utility model
Possible variation and modification are made to utility model technical solution, therefore, all contents without departing from utility model technical solution,
According to the technical spirit any simple modifications, equivalents, and modifications to the above embodiments of utility model, reality is belonged to
With the protection scope of new technique scheme.
Claims (9)
1. a kind of self-latching relay, which is characterized in that including pedestal, armature and the electromagnetic part being set in turn on pedestal,
Support rod, self-locking mechanism and normally opened contact portion；
The armature is arranged on support rod；In electromagnetic part power-off, one end of the armature is located above the electromagnetic part,
The other end of the armature is located at the side of the self-locking mechanism；When electromagnetic part is powered, one end of the armature is pull-in on institute
It states in electromagnetic part, the other end of the armature controls the self-locking mechanism and is in self-locking or unlocked state；
The self-locking mechanism is set between the other end of armature and normally opened contact portion；
At work, by power on/off of the electromagnetic part, the armature control self-locking mechanism is made to keep self-locking or unlock shape
State allows the normally opened contact portion to remain closed or disconnect.
2. self-latching relay as described in claim 1, which is characterized in that the self-locking mechanism includes shell, top cap, left tooth
Column, right tooth post, push rod and reset spring；
The shell setting is on the base；
The left tooth post, in the housing, top cap and right tooth post is arranged in internal slide for fixed setting；One end of the left tooth post is set
There is the first limit rib, offer equally distributed limiting slot on another end wall of the left tooth post, between adjacent two limiting slot
End face has second level dentation lug boss；
The second limit rib is arranged in the lower end of the top cap, and lower end surface is equipped with equally distributed detent projection portion；
The right tooth post includes the limit rib of ontology, setting on the body with limiting slot cooperation, the limit rib
Upper end has level-one detent projection portion；The limit rib and limiting slot cooperate, level-one detent projection portion respectively with institute
State detent projection portion and second level dentation raised portion fits；
The push rod is arranged between the right tooth post and normally opened contact portion；
The reset spring is set between push rod and the pedestal, and the reset spring is constantly in compressive state.
3. self-latching relay as claimed in claim 2, which is characterized in that have lug boss, the reset on the push rod
Spring is set between lug boss and the pedestal.
4. self-latching relay as claimed in claim 2, which is characterized in that the limiting slot is identical with the limit quantity of rib,
It is 4.
5. self-latching relay as claimed in claim 2, which is characterized in that 90 degree of the tooth tip angle in the detent projection portion is extremely
120 degree.
6. self-latching relay as claimed in claim 2, which is characterized in that the other end of the armature is equipped with strut；
The strut is moved horizontally when the armature is engaged, pushing the top cap of the self-locking mechanism.
7. self-latching relay as described in claim 1, which is characterized in that be equipped with anti-unusual fluctuation between the armature and support rod
Spring.
8. self-latching relay as described in claim 1, which is characterized in that the normally opened contact portion include the first leaf spring and with
First leaf spring, second leaf spring disposed in parallel；
First leaf spring, one end are fixed on the pedestal, and the other end is provided with the first contact；
Second leaf spring, one end are fixed on the pedestal, and the other end is provided with the second touching with first contact cooperation
Point.
9. self-latching relay as described in claim 1, which is characterized in that the electromagnetic part includes coil and iron core；
On the base, the coil setting is in iron core surrounding, when the coil is powered, the iron core for the iron core setting
It is attracted the armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821187431.3U CN208570481U (en) | 2018-07-25 | 2018-07-25 | Self-latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821187431.3U CN208570481U (en) | 2018-07-25 | 2018-07-25 | Self-latching relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208570481U true CN208570481U (en) | 2019-03-01 |
Family
ID=65447905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821187431.3U Expired - Fee Related CN208570481U (en) | 2018-07-25 | 2018-07-25 | Self-latching relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208570481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766838A (en) * | 2018-07-25 | 2018-11-06 | 浙江源控节能科技集团有限公司 | Self-latching relay |
-
2018
- 2018-07-25 CN CN201821187431.3U patent/CN208570481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766838A (en) * | 2018-07-25 | 2018-11-06 | 浙江源控节能科技集团有限公司 | Self-latching relay |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101577194B (en) | Energy-saving electromagnetic switch device | |
| CN101789332B (en) | Alternating current contactor with mechanical short circuit self-locking function | |
| CN206340494U (en) | A kind of de- bridge-type magnetic latching relay of use microswitch | |
| CN208570481U (en) | Self-latching relay | |
| CN115172104B (en) | Bridge type double-breakpoint contactor and breaker | |
| CN104733230A (en) | Permanent magnet intelligent contactor having electromagnetic controllable counterforce and capable of guaranteeing normal switching-off | |
| CN109920665B (en) | Electromagnetic axis lock power switch device | |
| CN203882905U (en) | Electromagnetic relay | |
| CN201549396U (en) | Double contact structure for electric connection and relay thereof | |
| CN206148210U (en) | Take electro -magnet of manual control and state detection | |
| CN108766838A (en) | Self-latching relay | |
| CN212257298U (en) | Multi-contact arc-extinguishing relay | |
| CN106910661B (en) | A kind of relay with bilateral holding function | |
| CN204809158U (en) | Bridge type double break point DC electromagnetic contactor | |
| CN204230166U (en) | A kind of contactor | |
| CN210607117U (en) | Energy-saving electromagnetic switch | |
| CN112531423A (en) | High temperature row of inserting is prevented in intelligence outage | |
| CN103295846A (en) | Current contactor with switching mechanism | |
| CN213184019U (en) | Novel safe power switch | |
| US3209096A (en) | Plug-in relay construction | |
| CN206301747U (en) | Series type energy-saving double winding high-voltage DC contactor | |
| CN201417720Y (en) | Electromagnetic over current tripping device of circuit breaker | |
| CN205666198U (en) | Support manually and intelligent air switch automatic control | |
| CN216902758U (en) | Circuit breaker capable of remotely breaking circuit | |
| CN210403614U (en) | Air switch main brake transformation tripper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 Termination date: 20210725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |