CN217588805U - Anti-interference electricity mechanism and contactor - Google Patents
Anti-interference electricity mechanism and contactor Download PDFInfo
- Publication number
- CN217588805U CN217588805U CN202221216365.4U CN202221216365U CN217588805U CN 217588805 U CN217588805 U CN 217588805U CN 202221216365 U CN202221216365 U CN 202221216365U CN 217588805 U CN217588805 U CN 217588805U
- Authority
- CN
- China
- Prior art keywords
- contactor
- locking
- rod
- lock
- pull rod
- 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.)
- Active
Links
Images
Abstract
The application relates to an anti-shaking electric mechanism and a contactor. Prevent shaking electric mechanism includes: base, pull rod, locking lever, locking mechanism and energy storage circuit board. The anti-shaking motor mechanism is arranged on the contactor, and one end of the pull rod is connected with a moving contact support of the contactor; one end of the lock rod is in contact with the pull rod, the other end of the lock rod is connected with the locking mechanism, and the lock rod is used for controlling the movement of the pull rod; the locking mechanism is arranged on the base and is used for controlling the movement of the locking rod; the energy storage circuit board is used for storing energy when the contactor loop is powered on and releasing energy when the contactor loop is powered off, so that the locking mechanism delays the reset motion of the locking rod and further delays the opening of the main circuit of the contactor. This prevent shaking motor structure plug-and-play for the contactor has prevents shaking the electric function.
Description
Technical Field
The application relates to the technical field of low-voltage apparatuses, in particular to an anti-shaking electric mechanism and a contactor.
Background
The current anti-interference electric contactor is mainly in a knapsack type or an integrated type. Most of the integrated anti-shaking contactors are permanent magnetic contactors. The permanent magnet type contactor has the advantages that the price is high, the release of the permanent magnet type contactor is realized by discharging a large energy storage capacitor inside through an electronic circuit to separate the movable contact and the static contact of the product, the electronic circuit is well known to have poor stability and reliability compared with a mechanical mechanism, and if a fault occurs, the movable contact and the static contact of the contactor can not be separated, so that potential safety hazards exist.
The backpack type is a similar type charger treasure, and has large occupied space and short service life.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a plug-and-play anti-interference mechanism and a contactor.
In a first aspect, the utility model provides an anti-shake electric mechanism, anti-shake electric mechanism includes:
a base;
the pull rod is arranged on the base, and when the anti-shaking motor mechanism is arranged on the contactor, one end of the pull rod is connected with a moving contact support of the contactor;
one end of the lock rod is in contact with the pull rod, the other end of the lock rod is connected with a locking mechanism, and the lock rod is used for controlling the movement of the pull rod;
the locking mechanism is arranged on the base and is used for controlling the movement of the locking rod;
and the energy storage circuit board is used for storing energy when the contactor loop is electrified and releasing energy when the contactor loop is powered off, so that the locking mechanism delays the reset motion of the locking rod and further delays the opening of the main circuit of the contactor.
In one embodiment, a lock groove is formed in the pull rod, when the lock rod extends into the lock groove, the pull rod is locked, and when the lock rod extends out of the lock groove, the pull rod is released.
In one embodiment, the lock rod comprises a lock tongue and a rod part, the lock tongue is contacted with the pull rod, and the rod part is connected with the locking mechanism; when the spring bolt stretches into the lock groove, the pull rod is locked, and when the spring bolt stretches out of the lock groove, the pull rod is released.
In one embodiment, the locking mechanism comprises:
locking the electromagnet;
the armature is fixed on the movable iron core of the locking electromagnet;
a lock control lever in contact with the armature;
the microswitch is used for triggering the microswitch under the action of the locking and control rod so as to control the electromagnet coil of the contactor;
the first connecting rod is connected with the lock control rod;
the second connecting rod is connected with the lock control rod;
when the contactor loop is electrified, the locking electromagnet is electrified through the energy storage circuit board, the pull rod moves towards the direction of the contactor along with a moving contact of the contactor, the lock rod blocks the pull rod, and the lock control rod moves under the action of the armature so as to drive the first connecting rod and the second connecting rod to be straightened, the armature continues to move, the micro switch disconnects the electromagnet coil of the contactor, the locking electromagnet keeps a pull-in state, and the moving contact of the contactor is locked by the locking mechanism;
when the contactor loop is powered off, the energy storage circuit board supplies power to the locking electromagnet until the energy in the energy storage circuit board is released, the locking electromagnet is released, the armature position is recovered, the lock control rod is driven to move reversely, the first connecting rod and the second connecting rod are driven to release, the pull rod resets under the action of a moving contact reset spring of the contactor, and the main circuit of the contactor is opened.
In one embodiment, the locking mechanism further comprises an elastic piece, the elastic piece is arranged on the base and used for guiding and limiting the movement of the lock control rod.
In one embodiment, the locking mechanism further comprises an unlocking wheel, the unlocking wheel interacts with the lock head of the lock control rod, when the lower end of the lock control rod moves to the horizontal position of the elastic sheet, the lock head of the lock control rod is tangent to the unlocking wheel, the downward force given to the lock control rod by the unlocking wheel is zero, the first connecting rod and the second connecting rod are rapidly straightened upwards, and the locking mechanism is rapidly locked.
In one embodiment, the locking mechanism further comprises an auxiliary locking spring, one end of the auxiliary locking spring is connected with the base, the other end of the auxiliary locking spring is connected with the second connecting rod, and the first connecting rod and the second connecting rod are straightened under the acting force of the lock control rod and the acting force of the auxiliary locking spring.
In a second aspect, the present invention further provides a contactor, the contactor includes a contactor body and the above-mentioned anti-interference mechanism, the anti-interference mechanism is detachably fixed on the contactor body.
Above-mentioned prevent shaking electric mechanism and contactor should prevent shaking electric mechanism and install in the contactor to the one end and the contactor moving contact support of pull rod are connected, like this locking lever one end with the pull rod contact, the other end is connected with locking mechanism, the locking lever is used for controlling the motion of pull rod, thereby the energy storage circuit board is in when the contactor return circuit circular telegram, the stored energy, and when the contactor return circuit outage, the release energy makes locking mechanism postpones the motion that resets of locking lever, and then postpones opening of the main circuit of contactor, plug-and-play like this makes the contactor have prevents shaking electric function.
Drawings
Fig. 1 is a front view of the anti-interference mechanism in a locked state;
fig. 2 is a front state diagram of the anti-interference mechanism in an unlocked state;
fig. 3 is a schematic view of the state of the back of the anti-interference mechanism of the present invention;
fig. 4 is a state diagram of the installation state of the anti-interference mechanism and the contactor of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Specifically, referring to fig. 1 to 4, fig. 1 is a schematic view of the anti-interference mechanism in a locked state; fig. 2 is a front state schematic diagram of the anti-interference mechanism in an unlocking state; fig. 3 is a schematic view of the state of the back of the anti-interference mechanism of the present invention; fig. 4 is a state diagram of the installation state of the anti-interference mechanism and the contactor of the present invention.
The utility model provides a prevent shaking electric mechanism includes: the locking mechanism comprises a base 1, a pull rod 10, a locking rod 2, a locking mechanism and an energy storage circuit board 11. The pull rod 10 penetrates through the base 1, and when the anti-shaking motor mechanism is installed on a contactor, one end of the pull rod 10 is connected with a moving contact support of the contactor; one end of the lock rod 2 is in contact with the pull rod 10, the other end of the lock rod is connected with a locking mechanism, and the lock rod 2 is used for controlling the movement of the pull rod 10; the locking mechanism is arranged on the base 1 and is used for controlling the movement of the locking rod 2; the energy storage circuit board 11 is used for storing energy when the contactor loop is powered on, and releasing energy when the contactor loop is powered off, so that the locking mechanism delays the reset motion of the locking rod 2, and further delays the opening of the main circuit of the contactor.
The anti-interference electricity mechanism is installed on the contactor, so that one end of the pull rod 10 is connected with a movable contact support of the contactor, one end of the lock rod 2 is in contact with the pull rod 10, the other end of the lock rod is connected with the locking mechanism, the lock rod 2 is used for controlling the movement of the pull rod 10, so that the energy storage circuit board 11 stores energy when the contactor loop is electrified and releases energy when the contactor loop is powered off, so that the locking mechanism delays the reset movement of the lock rod 2 and further delays the opening of a main circuit of the contactor, and the anti-interference electricity mechanism is plug and play so that the contactor has an anti-interference electricity function.
In one embodiment, a locking groove 101 is formed on the pull rod 10, when the lock rod 2 extends into the locking groove 101, the pull rod 10 is locked, and when the lock rod 2 extends out of the locking groove 101, the pull rod 10 is released.
In one embodiment, the lock lever 2 comprises a latch bolt 21 and a lever part, the latch bolt 21 is contacted with the pull rod 10, and the lever part is connected with the locking mechanism; when the bolt 21 extends into the lock groove 101, the pull rod 10 is locked, and when the bolt 21 extends out of the lock groove 101, the pull rod 10 is released.
In one embodiment, the locking mechanism comprises: the locking device comprises a locking electromagnet 13, an armature 7, a lock control rod 8, a microswitch 14, a first connecting rod 3 and a second connecting rod 5; the armature 7 is fixed on a movable iron core of the locking electromagnet 13; the lock control rod 8 is in contact with the armature 7; the microswitch 14 is used for triggering the microswitch 14 under the action of the locking control rod so as to control the electromagnet coil of the contactor; the first connecting rod 3 is connected with the lock control rod 8; the second connecting rod 5 is connected with the lock control lever 8.
When the contactor loop is electrified, the locking electromagnet 13 is electrified through the energy storage circuit board 11, the pull rod 10 moves towards the contactor along with the moving contact of the contactor, the lock rod 2 blocks the pull rod 10, and the lock control rod 8 moves under the action of the armature 7, so that the first connecting rod 3 and the second connecting rod 5 are driven to be straightened, the armature 7 continues to move, the microswitch 14 disconnects the electromagnet coil of the contactor, the locking electromagnet 13 keeps a suction state, and the moving contact of the contactor is locked by the locking mechanism;
when the contactor loop is powered off, the energy storage circuit board 11 supplies power to the locking electromagnet 13 until the energy in the energy storage circuit board 11 is released, the locking electromagnet 13 is released, the position of the armature 7 is recovered, the lock control rod 8 is driven to move reversely, the first connecting rod 3 and the second connecting rod 5 are further driven to release, the pull rod 10 is reset under the action of the movable contact reset spring 12 of the contactor, and the main circuit of the contactor is opened.
In the embodiment, the smart application mechanics principle in the design of the anti-shaking electric mechanism realizes that the micro holding force of the locking electromagnet 13 is used for controlling the reset force of the moving contact of the contactor to be more than dozens of times, so that the electric energy required by the delayed release of the locking electromagnet 13 during the shaking electricity can be met by matching with a smaller energy storage circuit. And prevent shaking electric mechanism simple structure in this embodiment, the reliability is high, longe-lived, simple to operate, plug-and-play to after making ordinary contactor (relay) hang this and prevent shaking electric annex, can have and prevent shaking electric function, the second becomes and prevents shaking electric contactor (relay).
In one embodiment, the locking mechanism further comprises an elastic sheet 9, the elastic sheet 9 is arranged on the base 1, and the elastic sheet 9 is used for guiding and limiting the movement of the lock control lever 8.
In one embodiment, the locking mechanism further comprises an unlocking wheel 4, the unlocking wheel 4 interacts with a lock head 81 of the lock control rod 8, when the lower end of the lock control rod 8 moves to the horizontal position of the elastic sheet 9, the lock head 81 of the lock control rod 8 is tangent to the unlocking wheel 4, the downward force given to the lock control rod 8 by the unlocking wheel 4 is zero, the first connecting rod 3 and the second connecting rod 5 are quickly straightened upwards, and the locking mechanism is quickly locked.
In one embodiment, the locking mechanism further includes an auxiliary locking spring 6, one end of the auxiliary locking spring 6 is connected to the base 1, the other end of the auxiliary locking spring is connected to the second connecting rod 5, and the first connecting rod 3 and the second connecting rod 5 are straightened under the acting force of the lock control rod 8 and the acting force of the auxiliary locking spring 6.
For convenience of understanding, as shown in fig. 1 to 4, the anti-shaking electric mechanism includes a base 1, a pull rod 10, a lock lever 2, a locking mechanism, and an energy storage circuit board 11. The locking mechanism comprises a first connecting rod 3, a second connecting rod 5, a lock control rod 8, an elastic sheet 9, an unlocking wheel 4, an auxiliary locking spring 6, a locking electromagnet 13, an armature 7 and the like. A locking groove 101 is arranged in the middle of the pull rod 10, and the bottom end of the pull rod is inserted into a moving contact support of the contactor; the lock bar 2 is provided with a bolt 21; the locking mechanism is arranged on the base 1; the unlocking wheel 4 is mounted on the locking mechanism.
When a contactor loop is normally electrified, an electromagnet coil of the contactor is electrified and sucked, a locking electromagnet 13 is simultaneously electrified through an energy storage circuit board 11, a pull rod 10 moves downwards along with a moving contact of the contactor, a lock tongue 21 on a lock rod 2 slides into a lock groove 101 on the pull rod 10, meanwhile, a lock control rod 8 is pushed by an armature 7 of the locking electromagnet 13 to move leftwards, the lower end of the lock control rod 8 moves leftwards and upwards along the track of an elastic sheet 9 to drive a first connecting rod 3 and a second connecting rod 5 to move upwards, meanwhile, the first connecting rod 3 and the second connecting rod 5 are gradually straightened under the action of an auxiliary locking spring 6, when the lower end of the lock control rod 8 moves to the horizontal position of the elastic sheet 9, an irregular-shaped unlocking head 81 at the upper end of the lock control rod 8 is just tangent to an unlocking wheel 4, at the moment, the downward force of the unlocking wheel 4 on the lock control rod 8 is zero, so that the first connecting rod 3 and the second connecting rod 5 are quickly and upwards controlled, and a locking mechanism is quickly locked. The locking electromagnet 13 continues to move leftwards, the microswitch 14 is pushed to disconnect the electromagnet coil of the contactor, at the moment, the locking electromagnet 13 keeps the attraction state, and the movable contact of the contactor is locked by the locking mechanism to keep the attraction state.
When the contactor loop is powered off, the energy storage circuit board 11 continues to supply power to the locking electromagnet 13 until the energy storage in the energy storage circuit board 11 is released, the locking electromagnet 13 is released, the armature 7 of the locking electromagnet 13 moves rightwards under the force of the reset spring 12 of the locking electromagnet 13 to drive the lock control rod 8 to move rightwards, the special-shaped unlocking head 81 at the upper end of the lock control rod 8 is contacted with the unlocking wheel 4 to generate a downward force to unlock the locking mechanism, the pull rod 10 resets upwards under the force of the reset spring 12 of the contactor moving contact, the contactor moving contact is separated, and the main circuit controlled by the contactor is disconnected. Therefore, after the common contactor is hung on the anti-interference electric accessory, the anti-interference electric function is realized. The capacitor in the energy storage circuit board 11 is damaged, only the contactor has no anti-shaking function, other functions are unchanged, or a main circuit controlled by the contactor can be opened, so that the potential safety hazard of the existing anti-shaking electric contactor is solved.
In a second aspect, the utility model provides a contactor, the contactor includes contactor body and foretell anti-interference electricity mechanism, anti-interference electricity structure detachably is fixed in on the contactor body, specifically can see that fig. 4 shows, its theory of operation can refer to above, no longer redundantly here.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. An anti-interference electric mechanism, characterized in that, the anti-interference electric mechanism includes:
a base;
the pull rod is arranged on the base, and when the anti-shaking motor mechanism is arranged on the contactor, one end of the pull rod is connected with a moving contact support of the contactor;
one end of the lock rod is in contact with the pull rod, the other end of the lock rod is connected with a locking mechanism, and the lock rod is used for controlling the movement of the pull rod;
the locking mechanism is arranged on the base and is used for controlling the movement of the locking rod;
and the energy storage circuit board is used for storing energy when the contactor loop is electrified and releasing energy when the contactor loop is powered off, so that the locking mechanism delays the reset motion of the locking rod and further delays the opening of the main circuit of the contactor.
2. The electric sloshing preventing mechanism according to claim 1, wherein a locking groove is formed in said pull rod, and when said locking rod is inserted into said locking groove, said pull rod is locked, and when said locking rod is inserted out of said locking groove, said pull rod is released.
3. The anti-rattle electric mechanism according to claim 2, wherein the lock lever includes a latch contacting the pull lever and a lever portion connected to the locking mechanism; when the spring bolt stretches into the lock groove, the pull rod is locked, and when the spring bolt stretches out of the lock groove, the pull rod is released.
4. The anti-interference mechanism according to any one of claims 1 to 3, wherein said locking mechanism comprises:
locking the electromagnet;
the armature is fixed on the movable iron core of the locking electromagnet;
a lock control lever in contact with the armature;
the microswitch is used for triggering the microswitch under the action of the lock control rod so as to control the electromagnet coil of the contactor;
the first connecting rod is connected with the lock control rod;
the second connecting rod is connected with the lock control rod;
when the contactor loop is electrified, the locking electromagnet is electrified through the energy storage circuit board, the pull rod moves towards the direction of the contactor along with a moving contact of the contactor, the lock rod blocks the pull rod, and the lock control rod moves under the action of the armature so as to drive the first connecting rod and the second connecting rod to be straightened, the armature continues to move, the micro switch disconnects the electromagnet coil of the contactor, the locking electromagnet keeps a pull-in state, and the moving contact of the contactor is locked by the locking mechanism;
when the contactor loop is powered off, the energy storage circuit board supplies power to the locking electromagnet until the energy in the energy storage circuit board is released, the locking electromagnet is released, the armature position recovers, the lock control rod is driven to move reversely, the first connecting rod and the second connecting rod are further driven to release, the pull rod resets under the action of a movable contact reset spring of the contactor, and the main circuit of the contactor is opened.
5. The anti-glare mechanism according to claim 4, wherein the locking mechanism further comprises an elastic piece, the elastic piece is disposed on the base, and the elastic piece is used for guiding and limiting the movement of the lock control lever.
6. The anti-interference mechanism according to claim 5, wherein said locking mechanism further comprises an unlocking wheel, said unlocking wheel interacts with said lock head of said lock control lever, when said lower end of said lock control lever moves to a horizontal position of said elastic piece, said lock head of said lock control lever is tangent to said unlocking wheel, said unlocking wheel exerts zero downward force on said lock control lever, said first link and said second link straighten upward rapidly, and said locking mechanism locks rapidly.
7. The anti-shaking mechanism according to claim 6, wherein the locking mechanism further comprises an auxiliary locking spring, one end of the auxiliary locking spring is connected to the base, the other end of the auxiliary locking spring is connected to the second link, and the first link and the second link are straightened under the action of the lock control lever and the auxiliary locking spring.
8. A contactor, characterized in that the contactor comprises a contactor body and an anti-interference electric mechanism according to any one of claims 1 to 7, the anti-interference electric mechanism being detachably fixed to the contactor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221216365.4U CN217588805U (en) | 2022-05-18 | 2022-05-18 | Anti-interference electricity mechanism and contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221216365.4U CN217588805U (en) | 2022-05-18 | 2022-05-18 | Anti-interference electricity mechanism and contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217588805U true CN217588805U (en) | 2022-10-14 |
Family
ID=83552302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221216365.4U Active CN217588805U (en) | 2022-05-18 | 2022-05-18 | Anti-interference electricity mechanism and contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217588805U (en) |
-
2022
- 2022-05-18 CN CN202221216365.4U patent/CN217588805U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR970007515B1 (en) | Circuit breaker | |
| US10304638B2 (en) | Medium voltage double power supply change-over switch with permanent magnet | |
| CN111816473B (en) | Dual supply divide-shut brake drive conversion equipment | |
| CN217444760U (en) | Direct current charging gun and charging equipment | |
| CN217588805U (en) | Anti-interference electricity mechanism and contactor | |
| WO2014146678A1 (en) | Magnetic actuating device for a current switching device | |
| US20240008541A1 (en) | Electronic heating device | |
| CN102568934A (en) | Central locked straight running alternating-current contactor | |
| CN102931040B (en) | Locking and unlocking mechanism used for circuit breaker | |
| CN112878818A (en) | Lock opening and closing device for automobile tail door | |
| CN110939340B (en) | Door lock and control circuit thereof | |
| CN104282507B (en) | A kind of compact energy-saving electromagnetic operating mechanism | |
| CN115360065A (en) | Plug-in circuit breaker | |
| CN113178753B (en) | Locking and unlocking structure of charging gun lock hook | |
| CN203339083U (en) | Permanent magnet trip | |
| CN101882539B (en) | Locking device of under-voltage relay and tripping device | |
| US3201545A (en) | Electric control device | |
| CN218385066U (en) | Magnetic flux converter, protection module and circuit breaker | |
| CN219226193U (en) | Magnetic flux release and circuit breaker | |
| CN201773789U (en) | Locking device of under-voltage relay and tripping device | |
| JP2005160280A (en) | High-voltage enclosed switchboard | |
| CN113270290A (en) | Isolating switch | |
| CN115410877B (en) | Switching device and power supply apparatus | |
| CN110565330A (en) | Locking device and washing machine | |
| CN218919773U (en) | Emergency unlocking device for electric locking of switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |