CN209880505U - DC motor type inner chute driving comprehensive arc extinguishing relay - Google Patents
DC motor type inner chute driving comprehensive arc extinguishing relay Download PDFInfo
- Publication number
- CN209880505U CN209880505U CN201920770539.3U CN201920770539U CN209880505U CN 209880505 U CN209880505 U CN 209880505U CN 201920770539 U CN201920770539 U CN 201920770539U CN 209880505 U CN209880505 U CN 209880505U
- Authority
- CN
- China
- Prior art keywords
- electrode
- arc extinguishing
- sliding rod
- sleeve
- 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.)
- Active
Links
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a DC motor type inner chute driving comprehensive arc extinguishing relay, which comprises a shell, an arc extinguishing cover and a transmission assembly, wherein the arc extinguishing cover is provided with a cylindrical electrode, the cylindrical electrode is provided with a stationary contact, a flat electrode is arranged in the arc extinguishing cover, a movable contact is arranged on the flat electrode, the arc extinguishing relay also comprises a slide bar, and the flat electrode is arranged on the slide bar; a sleeve is arranged in the shell, the sleeve is coaxially sleeved outside the sliding rod, and the outer wall of the sliding rod is fixedly connected with a guide block in sliding fit with the sleeve; the lateral wall of the sleeve is provided with a sliding groove, and the guide block extends out of the sliding groove and is in transmission fit with the transmission assembly. The utility model has the advantages of it is following and effect: the novel mechanical structure is utilized, the sleeve with the sliding groove in the side wall is adopted to guide the sliding rod, the moving precision and stability are high, the friction resistance is small, the reliability is high, and the movement is rapid; the thrust spring is adopted, so that the static contact is in closer contact with the movable contact, and the reliability is higher; the torsion spring is adopted to drive the turning plate to reset, so that the application range is wider.
Description
Technical Field
The utility model relates to a relay technical field, in particular to spout drive synthesis arc extinguishing relay in direct current motor formula.
Background
The relay is a device with protection property for a circuit switch, which is an electric appliance for making a controlled quantity generate a predetermined step change in an electric output circuit when the change of an input quantity meets a specified requirement.
When the relay is used, the moving contact and the fixed contact of the relay generate electric arcs when being opened and closed, the electric arcs are gas discharge phenomena, and the electric currents pass through transient sparks generated by certain insulating media (such as air). The electric arc can cause the loss to the contact of relay, leads to the life of relay to shorten greatly, has increased use cost.
The prior Chinese patent with publication number CN108550505A discloses a high-power direct-current relay, which comprises a shell, a transmission assembly, a static spring and a movable spring, wherein the transmission assembly, the static spring and the movable spring are arranged in the shell, a static contact is arranged on the static spring, a movable contact is arranged on the movable spring, the output end of the transmission assembly is connected with the movable spring to push the movable contact on the movable spring to move towards the static contact on the static spring, the high-power direct-current relay also comprises a group of flexible arc-proof assemblies, the flexible arc-proof assemblies are arranged between the static contact and the movable contact, are in contact connection with the movable spring and move outwards towards the two ends of the movable spring under; when the movable contact and the fixed contact are separated, the flexible arc-proof component moves to a position between the movable contact and the fixed contact, so that arc extinction and arc isolation are realized; the transmission assembly comprises a speed reducing motor, a worm wheel, a gear and a rack, the output end of the speed reducing motor is connected with the worm, the worm is meshed with the worm wheel, the gear is connected with the worm wheel through a rotating shaft, the gear is meshed with the rack, and the rack is connected with the movable spring. In the transmission process of the transmission assembly, the speed reduction motor drives the worm to rotate, and the worm gear and the gear rack are used for transmission to enable the movable spring to move.
However, the high-power dc relay has the following disadvantages: because the rack drives when the movable spring moves, the rack is not guided by any guide assembly, and the offset is easy to occur in the moving process, so that the static contact and the movable contact cannot be accurately opposite, and the problem of lower motion precision and stability of the rack exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spout drive synthesis arc extinguishing relay in direct current motor formula adopts the sleeve of seting up the spout to lead when removing the slide bar that has the panel electrode, has the higher effect of motion precision and stationarity.
The above technical purpose of the present invention can be achieved by the following technical solutions: a direct current motor type inner chute driving comprehensive arc extinguishing relay comprises a shell, an arc extinguishing cover and a transmission assembly, wherein the arc extinguishing cover and the transmission assembly are arranged in the shell, a cylindrical electrode is arranged on the arc extinguishing cover, a stationary contact is arranged on the cylindrical electrode, a flat plate electrode is arranged in the arc extinguishing cover, a movable contact point in contact fit with the stationary contact is arranged on the flat plate electrode, the direct current motor type inner chute driving comprehensive arc extinguishing relay also comprises a sliding rod extending into the arc extinguishing cover, and the flat plate electrode is arranged on the sliding rod; a sleeve is arranged in the shell, the sleeve is coaxially sleeved outside the sliding rod, the sliding rod is arranged in a sliding manner relative to the sleeve, and the outer wall of the sliding rod is fixedly connected with a guide block; the sleeve lateral wall has seted up the spout along the sleeve axial, and the guide block stretches out the spout and with transmission assembly transmission cooperation, transmission assembly drive guide block along the spout motion.
By adopting the technical scheme, when the movable contact is abutted against the fixed contact, the transmission assembly drives the guide block to move along the axial direction of the sliding groove and the sleeve, the guide block drives the sliding rod to move along the axial direction, and the sliding rod drives the flat electrode to move towards the cylindrical electrode until the movable contact is abutted against the fixed contact; when the movable contact is separated from the fixed contact, the transmission assembly drives the guide block to move reversely along the sliding groove, the guide block drives the sliding rod to move reversely along the axis, and the sliding rod drives the flat electrode to move towards the direction far away from the cylindrical electrode, so that the movable contact is separated from the fixed contact. So, lead to the guide block through the spout, make the slide bar move along the axis direction, have the higher effect of slide bar motion accuracy and stationarity, can make movable contact and stationary contact accurate alignment, frictional resistance between guide block and the sleeve is less, the reliability is higher in the motion process.
The utility model discloses a further set up to: the transmission assembly comprises a motor, a worm wheel, a gear and a rack, the worm is fixedly connected to an output shaft of the motor, the worm is meshed with the worm wheel, the worm wheel and the gear are coaxially arranged, the gear is meshed with the rack, and the rack is fixedly connected to the guide block along the extension direction of the axis of the sliding rod.
By adopting the technical scheme, when the transmission assembly drives the slide rod to move, the output shaft of the motor rotates to drive the worm to rotate, the worm wheel drives the gear to rotate under the transmission action of the worm wheel and the worm, and the gear is meshed with the rack, so that the gear drives the rack to transmit, and the rack drives the guide block to slide along the sliding groove.
The utility model discloses a further set up to: the flat electrode is movably sleeved on the sliding rod, the sliding rod is provided with a tray, a thrust spring is arranged between the tray and the flat electrode, and the thrust spring enables a moving contact of the flat electrode to have a movement trend of pressing the static contact; the end part of the slide bar is provided with a limit rod matched with the flat electrode stop.
Through adopting above-mentioned technical scheme, when dull and stereotyped electrode and cylinder electrode contact, produce the cushion force under thrust spring's elastic action, produce certain pressure between stationary contact and the movable contact, make stationary contact and movable contact in close contact with, the contact is more stable, and the reliability is higher, and in addition, the gag lever post can play the backstop effect to dull and stereotyped electrode, prevents that dull and stereotyped electrode from breaking away from the slide bar when the back motion.
The utility model discloses a further set up to: the side wall of the sliding rod is provided with a step, the tray is sleeved on the sliding rod, one end face of the tray is abutted against the step, and the other end face of the tray is abutted against the thrust spring.
Through adopting above-mentioned technical scheme, on the slide bar was located to the tray cover, when the slide bar moved to the cylinder electrode, can promote the tray motion through the step, the tray produced thrust to thrust spring, so more convenient when the assembly, and still can dismantle it.
The utility model discloses a further set up to: the turnover plate is arranged between the cylindrical electrode and the flat electrode, the turnover plate is rotatably connected in the arc extinguishing cover through a turnover plate shaft, a torsional spring is sleeved on the turnover plate shaft, and the torsional spring enables the turnover plate to always have a movement trend of separating the static contact from the movable contact.
By adopting the technical scheme, in the process that the flat electrode moves towards the cylindrical electrode, the flat electrode pushes the turning plate to turn over, and the turning plate extrudes the torsion spring and does not separate the static contact and the movable contact; when the flat electrode is driven by the sliding rod to move back and reset, the turning plate is turned over above the movable contact again under the elastic action of the torsion spring to separate the static contact from the movable contact.
The utility model discloses a further set up to: the mounting hole has been seted up to the arc-extinguishing chamber, and the cylinder electrode is installed in the mounting hole, and threaded connection has the nut on the cylinder electrode, and the cylinder electrode lateral wall is provided with the anticreep lug with nut backstop complex.
Through adopting above-mentioned technical scheme, when installing the cylinder electrode on the arc extinguishing cover, pass the mounting hole with cylinder electrode one end earlier, make anticreep lug and arc extinguishing cover inner wall offset, then install the nut on the cylinder electrode, can be with cylinder electrode fixed mounting in the mounting hole through the clamping action of nut and anticreep lug.
To sum up, the utility model discloses following beneficial effect has:
1. the sleeve with the sliding groove in the side wall is used for guiding the guide block, the sliding rod is driven by the guide block to move along the axial direction of the sliding rod under the driving action of the transmission assembly, the effect of high movement precision and stability is achieved, the friction resistance between the guide block and the sleeve in the movement process is small, the reliability is high, and the movement is rapid;
2. the flat plate electrode is movably sleeved on the sliding rod and provided with the thrust spring, and under the elastic action of the thrust spring, a certain pressure is generated between the fixed contact and the movable contact, so that the fixed contact and the movable contact are in closer contact, and the reliability is higher;
3. the torsion spring is adopted to drive the turning plate to reset, so that the limitation of the placing state of the relay is avoided, and the application range is wider.
Drawings
Fig. 1 is a schematic diagram of the internal structural relationship of the embodiment.
Fig. 2 is a schematic structural relationship diagram of a part of the internal structure of the embodiment in an exploded state.
In the figure: 1. a housing; 11. a communicating hole; 2. an arc extinguishing chamber; 21. an upper arc chute; 211. mounting holes; 22. a lower arc chute; 23. an interior chamber; 24. a cylindrical electrode; 241. a stationary contact; 242. an anti-drop bump; 243. a nut; 25 cavities; 3. a transmission assembly; 31. a motor; 32. a worm; 33. a turbine; 34. a gear; 35. a rack; 4. a plate electrode; 41. a movable contact; 5. a slide bar; 51. a limiting rod; 52. a step; 53. a tray; 54. a thrust spring; 6. a sleeve; 61. a chute; 7. a guide block; 8. turning over a plate; 81. a flap shaft; 9. a torsion spring; 10. a limiting groove.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. For convenience of explanation, the following "up" and "down" are all in the same direction as shown in fig. 1.
A direct current motor type inner chute driving comprehensive arc extinguishing relay is shown in figures 1 and 2 and comprises a shell 1, wherein an arc extinguishing chamber 2 and a transmission assembly 3 are arranged in the shell 1, the arc extinguishing chamber 2 comprises an upper arc extinguishing chamber 21 and a lower arc extinguishing chamber 22, the upper arc extinguishing chamber 21 and the lower arc extinguishing chamber 22 are buckled together through a lip structure to form an inner cavity 23, two mounting holes 211 are formed in the upper arc extinguishing chamber 212, a cylindrical electrode 24 is arranged in each mounting hole 211, a stationary contact 241 is arranged at the lower end of each cylindrical electrode 24, namely the end part of each cylindrical electrode 24 located in the inner cavity 23, and a communication hole 11 for extending the upper end of each cylindrical electrode 24 is formed in the shell 1; the side wall of the cylindrical electrode 24 at one end of the inner chamber 23 is provided with a retaining lug 242, and the side wall of the cylindrical electrode 24 outside the arc extinguishing chamber 2 is connected with a nut 243 by screw thread. When the cylindrical electrode 24 is installed on the arc-extinguishing chamber 2, one end of the cylindrical electrode 24 firstly passes through the installation hole 211, so that the anti-falling lug 242 abuts against the inner wall of the upper arc-extinguishing chamber 212, then the nut 243 is installed on the cylindrical electrode 24, and the cylindrical electrode 24 can be fixedly installed in the installation hole 211 through the clamping action of the nut 243 and the anti-falling lug 242. The inner chamber 23 is also provided with a plate electrode 4, and the upper end surface of the plate electrode 4 is provided with two movable contacts 41 which are in contact fit with the fixed contact 241.
As shown in fig. 1 and 2, a slide rod 5 is further arranged in the housing 1, the upper end of the slide rod 5 extends into the internal cavity 23 of the arc extinguishing chamber 2, the flat plate electrode 4 is sleeved at the upper end of the slide rod 5, a limit rod 51 matched with the flat plate electrode 4 in a stopping way is arranged at the end part of the slide rod 5, a limit groove 10 matched with the limit rod 51 is arranged on the upper surface of the flat plate electrode 4, the limit rod 51 can play a stopping role on the flat plate electrode 4, and when the flat plate electrode 4 moves back, the limit rod 51 can push the flat plate electrode 4 to prevent the flat plate electrode 4 from separating from the slide rod 5; the middle part of the lower arc-extinguishing cover 22 is recessed to form a cavity 25 communicated with the inner cavity 23, the side wall of the slide rod 5 at the end of the cavity 25 is provided with a step 52, the side wall of the slide rod 5 in the cavity 25 is sleeved with a tray 53 and a thrust spring 54, one end of the thrust spring 54 is abutted against the flat electrode 4, the other end of the thrust spring 54 is abutted against the upper end of the tray 53, the lower end face of the tray 53 is abutted against the step 52, and the thrust spring 54 enables the movable contact 41 of the flat electrode 4 to have a movement trend of pressing the stationary contact 241. A sleeve 6 is further arranged in the shell 1, the upper end of the sleeve 6 is fixedly connected to the lower arc-extinguishing chamber 22, the sleeve 6 is sleeved outside the sliding rod 5 and is coaxially arranged with the sliding rod 5, the outer wall of the sliding rod 5 is fixedly connected with a guide block 7, the outer wall of the guide block 7 is attached to the inner wall of the sleeve 6, and the guide block 7 is in sliding fit with the sleeve 6; the lateral wall of the sleeve 6 is provided with a sliding groove 61 along the axial direction of the sleeve 6, and the lateral wall of the guide block 7 extends out of the sliding groove 61 and is in transmission fit with the transmission component 3.
As shown in fig. 1, the transmission assembly 3 includes a motor 31, a worm 32, a worm wheel 33, a gear 34 and a rack 35, the worm 32 is fixedly connected to an output shaft of the motor 31, the worm 32 is engaged with the worm wheel 33, the worm wheel 33 is coaxially arranged with the gear 34, the gear 34 is engaged with the rack 35, and the rack 35 is fixedly connected to the guide block 7 along an axial extension direction of the slide rod 5.
In the transmission process, the output shaft of the motor 31 rotates to drive the worm 32 to rotate, the worm wheel 33 drives the gear 34 to rotate under the transmission action of the worm wheel 33 and the worm 32, and the gear 34 drives the rack 35 to transmit due to the fact that the gear 34 is meshed with the rack 35, so that the rack 35 drives the guide block 7 to slide along the axis of the sleeve 6.
As shown in fig. 1, a turning plate 8 is arranged between the cylindrical electrode 24 and the flat electrode 4, the turning plate 8 is rotatably connected in the arc extinguishing chamber 2 through a turning plate shaft 81, a torsion spring 9 is sleeved on the turning plate shaft 81, one end of the torsion spring 9 is abutted on the turning plate 8, the other end of the torsion spring 9 is abutted on the inner wall of the lower arc extinguishing chamber 22, the torsion spring 9 enables the turning plate 8 to always have a movement tendency of separating the stationary contact 241 from the movable contact 41, and the turning plate 8 is horizontally turned and covered above the movable contact 41 in a normal state.
The utility model discloses a basic operating principle does: when the movable contact 41 is abutted against the fixed contact 241, the transmission assembly 3 drives the guide block 7 to move along the axial direction of the sliding groove 61 and the sleeve 6, the guide block 7 drives the sliding rod 5 to move along the axial direction, the sliding rod 5 drives the flat electrode 4 to move towards the cylindrical electrode 24, the flat electrode 4 pushes the turning plate 8 to turn over in the process that the flat electrode 4 moves towards the cylindrical electrode 24, the turning plate 8 extrudes the torsion spring 9 to prevent the fixed contact 241 and the movable contact 41 from being separated until the movable contact 41 is abutted against the fixed contact 241, the step 52 generates thrust to the tray 53 at the moment, and the tray 53 generates thrust to the thrust spring 54, so that a certain pressure is generated between the fixed contact 41 and the movable contact 241, the contact between the fixed contact 241 and the movable contact 41 is tighter; when the movable contact 41 is separated from the stationary contact 241, the transmission assembly 3 drives the guide block 7 to move reversely along the sliding groove 61, the guide block 7 drives the sliding rod 5 to move reversely along the axis, the sliding rod 5 drives the flat electrode 4 to move in the direction away from the cylindrical electrode 24, in the process, when the flat electrode 4 does not extrude the turning plate 8 any more, the turning plate 8 turns over above the movable contact 41 again under the elastic action of the torsion spring 9, and then the movable contact 41 and the stationary contact 241 can be separated to realize arc extinction. Therefore, the guide block 7 is guided through the sliding groove 61, the sliding rod 5 moves along the axis direction, the effects of high movement precision and stability and high running speed of the sliding rod 5 are achieved, the movable contact 41 can be accurately aligned with the stationary contact 241, and the friction resistance between the guide block 7 and the sleeve 6 in the movement process is low and the reliability is high.
Adopt torsional spring 9 to make in this embodiment to turn over board 8 and reset, compare in prior art and rely on turning over the mode that board 8 self gravity resets, prior art only is applicable to the vertical state of placing of relay, and the utility model discloses do not receive the restriction of putting the state, applicable scope is wider.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (6)
1. The utility model provides an arc extinguishing relay is synthesized in drive of spout in direct current motor formula, includes shell (1), locates arc-extinguishing chamber (2), drive assembly (3) in shell (1), be provided with cylinder electrode (24) on arc-extinguishing chamber (2), cylinder electrode (24) are provided with stationary contact (241), be provided with dull and stereotyped electrode (4) in arc-extinguishing chamber (2), be equipped with on dull and stereotyped electrode (4) with stationary contact (241) contact complex movable contact (41), its characterized in that: the arc extinguishing chamber is characterized by further comprising a sliding rod (5) extending into the arc extinguishing chamber (2), wherein the flat plate electrode (4) is arranged on the sliding rod (5); a sleeve (6) is arranged in the shell (1), the sleeve (6) is coaxially sleeved outside the sliding rod (5), the sliding rod (5) is arranged in a sliding mode relative to the sleeve (6), and a guide block (7) is fixedly connected to the outer wall of the sliding rod (5); the sleeve (6) lateral wall is followed sleeve (6) axial has seted up spout (61), guide block (7) stretch out spout (61) and with transmission assembly (3) transmission cooperation, transmission assembly (3) drive guide block (7) are followed spout (61) motion.
2. The dc motor type internal chute driving comprehensive arc extinguishing relay according to claim 1, characterized in that: the transmission assembly (3) comprises a motor (31), a worm (32), a worm wheel (33), a gear (34) and a rack (35), the worm wheel (32) is fixedly connected to an output shaft of the motor (31), the worm wheel (32) is meshed with the worm wheel (33), the worm wheel (33) and the gear (34) are coaxially arranged, the gear (34) is meshed with the rack (35), and the rack (35) is fixedly connected to the guide block (7) along the axial extension direction of the sliding rod (5).
3. The dc motor type internal chute driving comprehensive arc extinguishing relay according to claim 1, characterized in that: the flat electrode (4) is movably sleeved on the sliding rod (5), the sliding rod (5) is provided with a tray (53), a thrust spring (54) is arranged between the tray (53) and the flat electrode (4), and the thrust spring (54) enables a movable contact (41) of the flat electrode (4) to have a movement trend of pressing the fixed contact (241); and the end part of the sliding rod (5) is provided with a limiting rod (51) matched with the stop of the flat electrode (4).
4. The direct-current motor type internal chute driving comprehensive arc extinguishing relay as claimed in claim 3, characterized in that: the side wall of the sliding rod (5) is provided with a step (52), the tray (53) is sleeved on the sliding rod (5), one end face of the tray (53) is abutted against the step (52), and the other end face of the tray (53) is abutted against the thrust spring (54).
5. The dc motor type internal chute driving comprehensive arc extinguishing relay according to claim 1, characterized in that: a turning plate (8) is arranged between the cylindrical electrode (24) and the flat electrode (4), the turning plate (8) is rotatably connected into the arc extinguishing chamber (2) through a turning plate shaft (81), a torsion spring (9) is sleeved on the turning plate shaft (81), and the torsion spring (9) enables the turning plate (8) to have a partition all the time to keep off the movement trend of the fixed contact (241) and the movable contact (41).
6. The dc motor type internal chute driving comprehensive arc extinguishing relay according to claim 1, characterized in that: mounting hole (211) have been seted up in arc-extinguishing chamber (2), cylindrical electrode (24) install in mounting hole (211), threaded connection has nut (243) on cylindrical electrode (24), cylindrical electrode (24) lateral wall be provided with nut (243) backstop complex anticreep lug (242).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770539.3U CN209880505U (en) | 2019-05-27 | 2019-05-27 | DC motor type inner chute driving comprehensive arc extinguishing relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770539.3U CN209880505U (en) | 2019-05-27 | 2019-05-27 | DC motor type inner chute driving comprehensive arc extinguishing relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209880505U true CN209880505U (en) | 2019-12-31 |
Family
ID=68947747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920770539.3U Active CN209880505U (en) | 2019-05-27 | 2019-05-27 | DC motor type inner chute driving comprehensive arc extinguishing relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209880505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117810017A (en) * | 2024-02-29 | 2024-04-02 | 武汉飞特电气有限公司 | Vacuum switch tube with external corrugated tube |
-
2019
- 2019-05-27 CN CN201920770539.3U patent/CN209880505U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117810017A (en) * | 2024-02-29 | 2024-04-02 | 武汉飞特电气有限公司 | Vacuum switch tube with external corrugated tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109616385A (en) | Miniature circuit breaker operating mechanism | |
| CN209880505U (en) | DC motor type inner chute driving comprehensive arc extinguishing relay | |
| CN209880503U (en) | DC motor type outer guide pillar driven comprehensive arc extinguishing relay | |
| CN202018932U (en) | Double-breakpoint universal breaker | |
| CN111430173B (en) | Novel ABB load switch inlet wire operating device | |
| CN112271629B (en) | Low-voltage drawer type switch cabinet | |
| CN103021691B (en) | Switching-on and switching-off mechanism of switchgear | |
| CN203038801U (en) | Closing and opening mechanism of switch device | |
| CN209880431U (en) | Arc extinguishing mechanism of arc extinguishing relay | |
| CN209266338U (en) | Miniature circuit breaker operating mechanism | |
| CN109038340B (en) | Manual and electric opening and closing operation mechanism for circuit breaker | |
| CN201311897Y (en) | Isolating switch | |
| CN209374370U (en) | A kind of indication linked structure of the divide-shut brake of breaker | |
| CN210837584U (en) | Novel AC/DC auxiliary switch | |
| CN113327817A (en) | Pressure relay | |
| CN221508086U (en) | Circuit breaker transmission structure | |
| CN220106348U (en) | Isolation switch | |
| CN118136447B (en) | Medium-voltage vacuum circuit breaker closing buffer structure capable of eliminating closing collision and bouncing | |
| KR20150073141A (en) | Disconnector Switchgear | |
| CN204809058U (en) | Splint formula dual spring operating mechanism | |
| CN219321284U (en) | Circuit breaker | |
| CN214123775U (en) | Vacuum arc-extinguishing chamber convenient to replace | |
| CN219658629U (en) | AC contactor with manual starting | |
| CN116613023B (en) | Misoperation preventing interlocking mechanism and device for gas-insulated metal-enclosed switch | |
| CN211088099U (en) | Novel AC/DC auxiliary switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |