CN113299516A - Locking pull rod, circuit breaker and looped netowrk cabinet - Google Patents
Locking pull rod, circuit breaker and looped netowrk cabinet Download PDFInfo
- Publication number
- CN113299516A CN113299516A CN202110402471.5A CN202110402471A CN113299516A CN 113299516 A CN113299516 A CN 113299516A CN 202110402471 A CN202110402471 A CN 202110402471A CN 113299516 A CN113299516 A CN 113299516A
- Authority
- CN
- China
- Prior art keywords
- internal thread
- circuit breaker
- rod
- contact
- movable contact
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H2033/6667—Details concerning lever type driving rod arrangements
Landscapes
- Breakers (AREA)
Abstract
The invention discloses a locking pull rod, a circuit breaker with the locking pull rod and a ring main unit, wherein the locking pull rod comprises a rod body, one end of the rod body is provided with a first internal thread used for connecting a movable contact in the circuit breaker, the other end of the rod body is provided with a second internal thread used for connecting a driving device, and the thread pitch and the rotation direction of the first internal thread and the second internal thread are the same. So set up, through set up the first internal thread and the second internal thread that the direction of rotation is the same with the pitch at the both ends of the body of rod, when the body of rod connection movable contact or the one end of connecting drive arrangement produced not hard up, because the first internal thread and the second internal thread that the direction of rotation is the same with the pitch, the other end of the body of rod also can produce synchronous displacement, the relative distance between movable contact and the drive arrangement then still can remain unchanged this moment, the produced stroke length of drive arrangement drive movable contact stationary contact keeps unchangeable, the movable contact can normally contact the stationary contact, the circuit breaker can form normal route.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a locking pull rod, a circuit breaker and a ring main unit.
Background
A circuit breaker refers to a switching device that breaks an electric current. The circuit breaker generally has an action end (movable contact) and a non-action end (stationary contact), and one side of the action end (movable contact) far away from the non-action end (stationary contact) is connected with a pull rod for driving the action end (movable contact) to contact/far away from the non-action end (stationary contact).
One end of the existing pull rod is generally connected with an action end (movable contact) by adopting a threaded structure, the other end of the pull rod is connected with a driving device by adopting a buckle structure, after long-term use, partial failure or looseness of the threaded structure can occur, and partial relative displacement can be generated between the pull rod and the action end (movable contact), so that the distance between the action end (movable contact) and a non-action end (stationary contact) is increased, at the moment, when the driving device continues to drive the pull rod by a fixed stroke, the action end (movable contact) can not normally contact with the non-action end (stationary contact), and a passage or poor contact can not be formed in the circuit breaker.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the anti-loosening pull rod, the two ends of the rod body are respectively provided with the first internal thread and the second internal thread with the same rotation direction and thread pitch, so that the two ends of the rod body synchronously displace in the loosening process, the relative distance between the movable contact and the driving device connected with the two ends of the rod body is ensured to be unchanged, the stroke from the distance from the movable contact to the contact with the static contact is ensured to be unchanged, and the movable contact is enabled to normally contact with the static contact.
The invention also provides a circuit breaker with the anti-loosening pull rod.
The invention also provides a ring main unit with the circuit breaker
According to an embodiment of the first aspect of the present invention, a locking pull rod for connecting a movable contact of a circuit breaker and a driving apparatus includes:
the circuit breaker comprises a rod body, wherein one end of the rod body is provided with a first internal thread used for being connected with a movable contact in the circuit breaker, the other end of the rod body is provided with a second internal thread used for being connected with a driving device, and the thread pitch and the rotation direction of the first internal thread and the second internal thread are the same.
According to the embodiment of the first aspect of the invention, the anti-loosening pull rod has at least the following beneficial effects: through set up the first internal thread and the second internal thread that the direction of rotation and pitch are the same at the both ends of the body of rod, when the body of rod connection movable contact or the one end of connecting drive arrangement produced not hard up, because the first internal thread and the second internal thread that the direction of rotation and pitch are the same, the other end of the body of rod also can produce synchronous displacement, the relative distance between movable contact and the drive arrangement then still can keep unchangeable this moment, the produced stroke length of drive arrangement drive movable contact stationary contact keeps unchangeable, the movable contact can normally contact the stationary contact, the circuit breaker can form normal route.
According to some embodiments of the invention, the mobile contact further comprises a first insert, the first insert is provided with a first external thread matching the first internal thread, the first insert is further provided with a third internal thread for connecting the mobile contact, and the rotation directions of the first internal thread and the third internal thread are opposite.
According to some embodiments of the invention, the anti-loosening device further comprises an anti-loosening assembly, the anti-loosening assembly comprises a second insert, an elastic piece and a connecting rod used for connecting the driving device, the second insert is provided with a second external thread matched with the second internal thread, the elastic piece and the connecting rod are movably arranged in an inner cavity of the second insert, and the connecting rod can compress the elastic piece to enable the elastic piece to generate pretightening force on the rod body.
According to some embodiments of the invention, the resilient member is provided as a disc spring or a compression spring.
According to some embodiments of the invention, a circumferential wall of the connecting rod is provided with a snap ring embedded in an inner wall of the elastic member.
According to some embodiments of the invention, the rod body is provided with a plurality of ribs on a circumferential wall thereof.
According to the circuit breaker of the second aspect embodiment of the invention, the anti-loosening pull rod is provided.
The circuit breaker according to the embodiment of the second aspect of the invention has at least the following beneficial effects: through set up the first internal thread and the second internal thread that the direction of rotation and pitch are the same at the both ends of the body of rod, when the body of rod connection movable contact or the one end of connecting drive arrangement produced not hard up, because the first internal thread and the second internal thread that the direction of rotation and pitch are the same, the other end of the body of rod also can produce synchronous displacement, the relative distance between movable contact and the drive arrangement then still can keep unchangeable this moment, the produced stroke length of drive arrangement drive movable contact stationary contact keeps unchangeable, the movable contact can normally contact the stationary contact, the circuit breaker can form normal route.
According to some embodiments of the invention, further comprising a housing for housing the fixed contact and the movable contact of the circuit breaker, a peripheral wall of the housing is provided with a corrugated buffer sleeve.
According to some embodiments of the invention, the power supply further comprises a voltage-sharing cover, one end of the static contact extends out of the cover body, the voltage-sharing cover is connected with one end of the cover body and covers the one end of the static contact, and an arc voltage-sharing surface for dispersing an electric field is arranged on the voltage-sharing cover.
According to the embodiment of the third aspect of the invention, the ring main unit is provided with the circuit breaker.
According to the embodiment of the third aspect of the invention, the ring main unit has at least the following beneficial effects: through set up the first internal thread and the second internal thread that the direction of rotation and pitch are the same at the both ends of the body of rod, when the body of rod connection movable contact or the one end of connecting drive arrangement produced not hard up, because the first internal thread and the second internal thread that the direction of rotation and pitch are the same, the other end of the body of rod also can produce synchronous displacement, the relative distance between movable contact and the drive arrangement then still can keep unchangeable this moment, the produced stroke length of drive arrangement drive movable contact stationary contact keeps unchangeable, the movable contact can normally contact the stationary contact, the circuit breaker can form normal route.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a lock stay according to an embodiment of a first aspect of the present invention;
FIG. 2 is a cross-sectional view of the check link shown in FIG. 1;
FIG. 3 is a schematic structural view of a connecting rod according to an embodiment of the first aspect of the present invention;
fig. 4 is a schematic structural view (hidden housing) of a circuit breaker according to an embodiment of the second aspect of the present invention;
fig. 5 is a cross-sectional view of the circuit breaker shown in fig. 4;
fig. 6 is a schematic structural diagram of a circuit breaker according to an embodiment of the second aspect of the present invention.
A rod body 100, a first internal thread 110, a second internal thread 120;
a first insert 200, a first external thread 210, a third internal thread 220;
the locking assembly 300, the second insert 310, the second external thread 311, the elastic member 320, the connecting rod 330, the snap ring 331;
a reinforcing rib 400;
a cover 500, a corrugated buffer sleeve 510;
a pressure equalizing cover 600, a pressure equalizing surface 610;
a housing 700.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, an anti-loose pull rod according to an embodiment of a first aspect of the present invention for connecting a circuit breaker and a driving device includes a rod body 100, one end of the rod body 100 is provided with a first internal thread 110 for connecting a movable contact in the circuit breaker, i.e., a front end of the rod body 100 shown in fig. 2, and the other end of the rod body 100 is provided with a second internal thread 120 for connecting the driving device, i.e., a rear end of the rod body 100 shown in fig. 2, wherein the first internal thread 110 and the second internal thread 120 have the same pitch and rotation direction, i.e., the rod body 100 rotates in any way, displacement generated on the movable contact and the driving device is always consistent, a distance between the movable contact and the driving device is always consistent, and the movable contact is always static relative to the driving device.
It should be noted that the anti-loosening in the anti-loosening pull rod means that a gap is generated between the movable contact and the fixed contact after the pull rod is placed to be loosened, and after the rod body 100 is loosened, the movable contact can still be guaranteed to be static relative to the driving device, so that the stroke from the driving device to the movable contact to the fixed contact can be guaranteed to be unchanged.
According to the embodiment of the first aspect of the invention, the anti-loosening pull rod has at least the following beneficial effects: by arranging the first internal thread 110 and the second internal thread 120 with the same rotation direction and thread pitch at the two ends of the rod body 100, when one end of the rod body 100 connected with the movable contact or connected with the driving device is loosened, due to the first internal thread 110 and the second internal thread 120 with the same rotation direction and thread pitch, the other end of the rod body can also generate synchronous displacement, at the moment, the relative distance between the movable contact and the driving device can still be kept unchanged, the stroke length generated by the driving device driving the movable contact to contact with the stationary contact is kept unchanged, the movable contact can normally contact with the stationary contact, and the circuit breaker can form a normal path.
According to some embodiments of the present invention, referring to fig. 1 and 2, the present invention further includes a first insert 200, the outer wall of the first insert is provided with a first external thread 210 matching the first internal thread 110, the inner wall of the first insert 200 is further provided with a third internal thread for connecting the moving contact, the rotation directions of the first internal thread 110 and the third internal thread are opposite, so that the rotation direction of the first insert 200 and the rod 100 and the rotation direction of the first insert 200 and the moving contact are opposite, a self-locking effect is formed, and the occurrence of looseness is avoided.
According to some embodiments of the present invention, referring to fig. 2, the anti-loose assembly 300 further comprises a second insert 310, an elastic member 320, and a connecting rod 330 for connecting to a driving device, the outer wall of the second insert 310 is provided with a second external thread 311 matching with the second internal thread 120, the elastic member 320 is movably disposed in the inner cavity of the second insert 310, the connecting rod 330 is also disposed in the inner cavity of the second insert 310, and the connecting rod 330 can compress the elastic member 320, so that the elastic member 320 generates a pre-tightening force on the rod body in a forward direction.
In the above embodiment, the elastic member 320 is a disc spring or a compression spring, the driving device drives the rod body 100 to move forward through the connecting rod 330, and when the moving contact connected to the front end of the rod body 100 contacts the stationary contact and stops, the elastic member 320 generates a rebound tendency due to compression, and the elastic potential energy thereof simultaneously acts on the rod body 100 and the connecting rod 330, so that the rod body 100 has a forward movement tendency, and thus the rod body 100 generates a pre-tightening force for the moving contact, which is a tighter contact between the moving contact and the stationary contact.
In the above embodiment, referring to fig. 3, a snap ring 331 is provided on the circumferential wall of the connecting rod 330, and the snap ring 331 is embedded in the inner wall of the elastic member 320, so that the elastic member 320 can be pressed and does not come out of the elastic member 320.
According to some embodiments of the present invention, referring to fig. 1 or 2, a plurality of reinforcing ribs 400 are provided on the circumferential wall of the rod body 100 for increasing the structural strength of the rod body 100.
According to the circuit breaker of the second aspect embodiment of the invention, the anti-loosening pull rod is provided.
The circuit breaker according to the embodiment of the second aspect of the invention has at least the following beneficial effects: by arranging the first internal thread 110 and the second internal thread 120 with the same rotation direction and thread pitch at the two ends of the rod body 100, when one end of the rod body 100 connected with the movable contact or connected with the driving device is loosened, due to the first internal thread 110 and the second internal thread 120 with the same rotation direction and thread pitch, the other end of the rod body can also generate synchronous displacement, at the moment, the relative distance between the movable contact and the driving device can still be kept unchanged, the stroke length generated by the driving device driving the movable contact to contact with the stationary contact is kept unchanged, the movable contact can normally contact with the stationary contact, and the circuit breaker can form a normal path.
According to some embodiments of the present invention, referring to fig. 4 or fig. 5, a cover 500 for placing a moving contact and a static contact is further included, and a corrugated buffer sleeve 510 is further covered on a peripheral wall of the cover 500, it can be understood that the corrugated buffer sleeve 510 has a structural shape similar to a bellows, and is made of an elastic material, and can play a role in buffering tension and compression vibration.
In the above embodiment, the elastic material for making the corrugated buffer sleeve 510 may be rubber or silicone.
According to some embodiments of the present invention, the ring main unit further includes a voltage-sharing cover 600, one end of the static contact extends out of the cover body 500 to form a terminal, the static contact is completely covered by the voltage-sharing cover 600, and in the process of conducting the static contact and the moving contact, the high voltage generated by the static contact is conducted to the voltage-sharing cover 600 and is dispersed through a voltage-sharing surface 610 on the voltage-sharing cover 600, so that the situation that the high voltage directly breaks through air and is conducted to the shell of the ring main unit can be avoided, and the potential safety hazard caused by the electrification of the shell can be avoided.
According to the embodiment of the third aspect of the invention, the ring main unit is provided with the circuit breaker.
According to the embodiment of the third aspect of the invention, the ring main unit has at least the following beneficial effects: by arranging the first internal thread 110 and the second internal thread 120 with the same rotation direction and thread pitch at the two ends of the rod body 100, when one end of the rod body 100 connected with the movable contact or connected with the driving device is loosened, due to the first internal thread 110 and the second internal thread 120 with the same rotation direction and thread pitch, the other end of the rod body can also generate synchronous displacement, at the moment, the relative distance between the movable contact and the driving device can still be kept unchanged, the stroke length generated by the driving device driving the movable contact to contact with the stationary contact is kept unchanged, the movable contact can normally contact with the stationary contact, and the circuit breaker can form a normal path.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A bail for connecting a circuit breaker to a drive, comprising:
the circuit breaker comprises a rod body, wherein one end of the rod body is provided with a first internal thread used for being connected with a movable contact in the circuit breaker, the other end of the rod body is provided with a second internal thread used for being connected with a driving device, and the thread pitch and the rotation direction of the first internal thread and the second internal thread are the same.
2. The anti-loose pull rod as claimed in claim 1, further comprising a first insert, wherein the first insert is provided with a first external thread matching the first internal thread, the first insert is further provided with a third internal thread for connecting the moving contact, and the first internal thread and the third internal thread have opposite rotation directions.
3. The anti-loosening pull rod according to claim 1 or 2, further comprising an anti-loosening assembly, wherein the anti-loosening assembly comprises a second insert, an elastic member and a connecting rod for connecting the driving device, the second insert is provided with a second external thread matched with the second internal thread, the elastic member and the connecting rod are movably arranged in an inner cavity of the second insert, and the connecting rod can compress the elastic member to enable the elastic member to generate a pre-tightening force on the rod body.
4. A lock stay according to claim 3, wherein the resilient member is provided as a disc spring or a compression spring.
5. An anti-loosening tie rod according to claim 3, wherein the peripheral wall of the connecting rod is provided with a snap ring embedded in the inner wall of the elastic member.
6. The anti-loosening tie rod as claimed in claim 3, wherein a plurality of reinforcing ribs are provided on the circumferential wall of the rod body.
7. A circuit breaker having a bail as claimed in any one of claims 1 to 6.
8. A circuit breaker according to claim 7, further comprising a housing for housing the fixed and movable contacts of the circuit breaker, the peripheral wall of the housing being provided with a corrugated buffer sleeve.
9. The circuit breaker according to claim 8, further comprising a voltage-equalizing cover, wherein one end of the stationary contact extends out of the cover body, the voltage-equalizing cover is connected to one end of the cover body and covers the one end of the stationary contact, and an arc-shaped voltage-equalizing surface for dispersing an electric field is disposed on the voltage-equalizing cover.
10. A ring main unit, characterized in that, there is a circuit breaker according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110402471.5A CN113299516A (en) | 2021-04-14 | 2021-04-14 | Locking pull rod, circuit breaker and looped netowrk cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110402471.5A CN113299516A (en) | 2021-04-14 | 2021-04-14 | Locking pull rod, circuit breaker and looped netowrk cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113299516A true CN113299516A (en) | 2021-08-24 |
Family
ID=77319744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110402471.5A Pending CN113299516A (en) | 2021-04-14 | 2021-04-14 | Locking pull rod, circuit breaker and looped netowrk cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113299516A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599388A (en) * | 2009-07-13 | 2009-12-09 | 浙江雷博司电器有限公司 | A kind of insulating pull rod for breaker |
| WO2010057742A1 (en) * | 2008-11-18 | 2010-05-27 | Robert Bosch Gmbh | Composite component comprising main body and threaded insert |
| CN201708082U (en) * | 2010-07-06 | 2011-01-12 | 沈阳华利能源设备制造有限公司 | High-voltage link insulator |
| CN202149125U (en) * | 2011-08-04 | 2012-02-22 | 杨清立 | Self-locking locknut assembly |
| CN202268298U (en) * | 2011-08-22 | 2012-06-06 | 浙江雷安电气有限公司 | Insulated pull rod |
| CN202905584U (en) * | 2012-11-16 | 2013-04-24 | 锦州华光玻璃开关管有限公司 | Anti-breakdown ceramic vacuum switch tube |
| CN203588909U (en) * | 2013-12-10 | 2014-05-07 | 戴顿（重庆）高压开关有限公司 | Three-station isolation switch insulation pull rod |
| CN103824724A (en) * | 2014-03-08 | 2014-05-28 | 浙江华仪电器科技有限公司 | Two-way insulating pull rod |
| CN104124103A (en) * | 2014-07-01 | 2014-10-29 | 珠海许继电气有限公司 | Movable contact rod connection and transmission device of vacuum arc extinguishing chamber |
| CN111287318A (en) * | 2020-03-27 | 2020-06-16 | 山东建筑大学 | Spatial grid structure stud bolt connection node and construction method thereof |
-
2021
- 2021-04-14 CN CN202110402471.5A patent/CN113299516A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010057742A1 (en) * | 2008-11-18 | 2010-05-27 | Robert Bosch Gmbh | Composite component comprising main body and threaded insert |
| CN101599388A (en) * | 2009-07-13 | 2009-12-09 | 浙江雷博司电器有限公司 | A kind of insulating pull rod for breaker |
| CN201708082U (en) * | 2010-07-06 | 2011-01-12 | 沈阳华利能源设备制造有限公司 | High-voltage link insulator |
| CN202149125U (en) * | 2011-08-04 | 2012-02-22 | 杨清立 | Self-locking locknut assembly |
| CN202268298U (en) * | 2011-08-22 | 2012-06-06 | 浙江雷安电气有限公司 | Insulated pull rod |
| CN202905584U (en) * | 2012-11-16 | 2013-04-24 | 锦州华光玻璃开关管有限公司 | Anti-breakdown ceramic vacuum switch tube |
| CN203588909U (en) * | 2013-12-10 | 2014-05-07 | 戴顿（重庆）高压开关有限公司 | Three-station isolation switch insulation pull rod |
| CN103824724A (en) * | 2014-03-08 | 2014-05-28 | 浙江华仪电器科技有限公司 | Two-way insulating pull rod |
| CN104124103A (en) * | 2014-07-01 | 2014-10-29 | 珠海许继电气有限公司 | Movable contact rod connection and transmission device of vacuum arc extinguishing chamber |
| CN111287318A (en) * | 2020-03-27 | 2020-06-16 | 山东建筑大学 | Spatial grid structure stud bolt connection node and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220216023A1 (en) | Direct current contactor and vehicle | |
| KR102086878B1 (en) | Electromagnetic contactor | |
| EP4160647A1 (en) | Relay | |
| CN113299516A (en) | Locking pull rod, circuit breaker and looped netowrk cabinet | |
| JP5179278B2 (en) | Switch | |
| US10978266B2 (en) | Electromechanical switch having movable contact and dampener | |
| CN109859991B (en) | Relay with a movable contact | |
| CN107068443A (en) | Magnetic microswitch | |
| US20240222039A1 (en) | Switching device and method for operating a switching device | |
| CN115874403A (en) | Device for supplying power to interior of barrel body of drum washing machine and washing machine | |
| CN210575744U (en) | Electromagnetic relay, power battery circuit and electric automobile | |
| CN213781915U (en) | Arc contact part with keep apart locking function | |
| JP4368552B2 (en) | Low voltage power circuit breaker electrode | |
| CN108257826B (en) | Moulded case circuit breaker with overload alarming function | |
| CN219267541U (en) | Insulating pull rod, circuit breaker and looped netowrk cabinet | |
| CN220753349U (en) | Circuit breaker | |
| CN113643932B (en) | Driving mechanism for high-voltage switch | |
| KR100492254B1 (en) | Molded Case Circuit Braker | |
| CN220796597U (en) | Relay device | |
| CN211125411U (en) | Electrical switch | |
| CN220041698U (en) | Sliding electric connection device | |
| CN221614642U (en) | Contact type double-tripping transient voltage suppressor | |
| CN215266078U (en) | Circuit breaker and looped netowrk cabinet with voltage-sharing function | |
| CN219267582U (en) | Permanent magnet quick-release mechanism | |
| CN214378305U (en) | Arc striking sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210824 |
|
| RJ01 | Rejection of invention patent application after publication |