CN219696354U - High-voltage direct-current relay adopting magnetic steel to replace contact spring - Google Patents
High-voltage direct-current relay adopting magnetic steel to replace contact spring Download PDFInfo
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- CN219696354U CN219696354U CN202321250799.0U CN202321250799U CN219696354U CN 219696354 U CN219696354 U CN 219696354U CN 202321250799 U CN202321250799 U CN 202321250799U CN 219696354 U CN219696354 U CN 219696354U
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- ceramic cover
- moving contact
- guide shaft
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 239000000919 ceramic Substances 0.000 claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 15
- 230000002452 interceptive effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a high-voltage direct-current relay adopting magnetic steel to replace a contact spring, which comprises a shell, an electromagnetic driving mechanism and a contact system, wherein the contact system comprises a ceramic cover and a contact assembly, the contact assembly comprises two fixed contacts arranged on the ceramic cover, a guide shaft arranged in the ceramic cover, a moving contact arranged on the guide shaft in a sliding manner, a counter-force spring and a driven magnetic steel arranged on the guide shaft in a sliding manner and used for driving the moving contact to act, the push rod of the electromagnetic driving mechanism is provided with active magnetic steel used for driving the driven magnetic steel, the driven magnetic steel acts along with the active magnetic steel and can drive the moving contact to slide on the guide shaft, and the connection or disconnection of the moving contact and the two fixed contacts can be realized. The utility model has the advantages of simple structure, stable and reliable performance, high creepage distance and good insulating property.
Description
Technical Field
The utility model relates to the technical field of relays, in particular to a high-voltage direct-current relay adopting magnetic steel to replace a contact spring.
Background
The relay is used as an electronic control device, and the medium (tool) used has electricity, light, magnetism, heat and the like (i.e. input quantity), and the transmission and control are circuits or signals (i.e. output quantity), and the relay is provided with a control system (also known as an input loop) and a controlled system (also known as an output loop), and the two loops are coupled through an internal mechanical or electronic device to realize linkage of states of the two loops. Relays are commonly used in automatic control circuits. The automatic switch is equivalent to an automatic switch, and plays roles of automatic adjustment, safety protection, circuit switching and the like in a circuit. When the existing high-voltage direct current relay works, a coil of an electromagnetic mechanism is excited to generate a magnetic field, a movable iron core upwards overcomes the counter force of a counter force spring and a contact spring, and a movable contact and a fixed contact of a contact system are closed; when the coil excitation is removed, the magnetic field disappears, and the counter-force spring and the contact spring separate the moving contact from the fixed contact; the counter-force spring and the contact spring are adopted to drive the movable iron core to reset, so that the insulation distance between the electromagnetic mechanism (low-voltage part) and the contact system (high-voltage part) is small, and the creepage distance cannot meet the use requirement of the high-voltage direct current relay.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the high-voltage direct-current relay which has the advantages of simple structure, stable and reliable performance, high creepage distance and good insulating property and adopts magnetic steel to replace a contact spring.
In order to achieve the purpose, the high-voltage direct-current relay adopting the magnetic steel to replace the contact spring comprises a shell, an electromagnetic driving mechanism and a contact system arranged on the electromagnetic driving mechanism, wherein the contact system comprises a ceramic cover arranged on the electromagnetic driving mechanism and a contact assembly arranged in the ceramic cover, the contact assembly comprises two fixed contacts arranged on the ceramic cover, a guide shaft arranged in the ceramic cover, a movable contact arranged on the guide shaft in a sliding manner, a counter-force spring and a passive magnetic steel arranged on the guide shaft in a sliding manner and used for driving the movable contact to act, and an active magnetic steel used for driving the passive magnetic steel is arranged on a push rod of the electromagnetic driving mechanism and can act along with the active magnetic steel and drive the movable contact to slide on the guide shaft, and the connection or disconnection of the movable contact and the two fixed contacts can be achieved.
The beneficial effects of the structure are as follows: the electromagnetic driving mechanism drives the driven magnetic steel to act through the driving magnetic steel, and the driven magnetic steel drives the moving contact to act, so that the connection and disconnection of the moving contact and the fixed contact can be realized. The electromagnetic driving mechanism and the contact assembly adopt a magnetic steel structure driving mode, so that the contact assembly and the electromagnetic driving mechanism can be separated, the contact assembly and the electromagnetic driving mechanism are respectively arranged in independent spaces, the insulation distance between the contact assembly (high-voltage part) and the electromagnetic driving mechanism (low-voltage part) can be increased, the creepage distance is larger, and the safety is higher. Therefore, the high-voltage direct-current relay has the advantages of simple structure, stable and reliable performance, high creepage distance and good insulating property.
Particularly, the electromagnetic driving mechanism comprises a U-shaped yoke, a yoke iron plate arranged on the U-shaped yoke, a coil rack arranged between the U-shaped yoke and the yoke iron plate, a coil arranged on the coil rack, and a movable iron core arranged in the coil rack, wherein a push rod is in linkage fit with the movable iron core, one end of the push rod extends out of the yoke iron plate and is connected to the active magnetic steel, a containing groove is formed in the yoke iron plate corresponding to the active magnetic steel, and the active magnetic steel moves along with the push rod and can reciprocate in the containing groove. The active magnetic steel and the electromagnetic driving mechanism adopt a modularized structural design, so that the electromagnetic driving mechanism and the contact assembly can be separated, the creepage distance between the low-voltage part and the high-voltage part can be increased, and the working reliability of the high-voltage direct current relay can be improved.
Particularly, the push rod on correspond holding groove department and be provided with down the shield plate, down be provided with on the shield plate with initiative magnet steel matched with spacing groove, initiative magnet steel block in the spacing groove. The active magnetic steel is clamped in the limiting groove of the lower shielding plate, the lower shielding plate can play a shielding role, the active magnetic steel is prevented from interfering other parts, and the working reliability of the high-voltage direct current relay is improved.
The ceramic cover comprises an insulating plate arranged on the yoke plate and a ceramic cover body arranged on the insulating plate, a containing cavity for containing the contact assembly is formed between the insulating plate and the ceramic cover body, and a stainless steel plate is arranged between the insulating plate and the yoke plate. The contact assembly is arranged in the accommodating cavity of the ceramic cover, the contact assembly and the electromagnetic driving mechanism can be separated independently, the creepage distance between the contact assembly and the electromagnetic driving mechanism can be increased, and the insulation performance is better.
Particularly, guiding axle one end connect on the ceramic cover body, the other end block of guiding axle is on the location boss of insulation board, reaction spring suit on the guiding axle, reaction spring one end is contradicted in the location draw-in groove of ceramic cover body, the reaction spring other end is contradicted in the spacing draw-in groove of moving contact. The guide shaft block is between ceramic cover body and insulation board to be convenient for the guide shaft and the assembly of ceramic cover body, insulation board, and reaction spring block is between ceramic cover body, moving contact, thereby be convenient for reaction spring and the assembly of ceramic cover body, moving contact, and can guarantee that the moving contact can reliably carry out the divide-shut brake action, be favorable to improving this high voltage direct current relay's operational reliability.
Particularly, a plurality of guide convex strips are respectively arranged on the inner wall of the ceramic cover body corresponding to the two sides of the moving contact, and the moving contact can slide back and forth along the guide convex strips when the moving contact performs opening and closing actions. The guiding convex strips can play a guiding role on the moving contact, so that the moving contact can reliably execute switching-on and switching-off actions in the ceramic cover body, and the working reliability of the high-voltage direct-current relay is improved.
Particularly, the guide shaft on correspond moving contact below department and be provided with the shield plate, last shield plate and moving contact between be provided with the heat insulating mattress, last shield plate be provided with passive magnet steel matched with constant head tank, passive magnet steel block in the constant head tank. The upper shielding plate can play a shielding role, so that the passive magnetic steel is prevented from interfering other parts, the heat insulation pad plays a heat insulation role, the temperature of the moving contact is prevented from affecting the performance of the passive magnet, and the working reliability of the high-voltage direct current relay is improved.
Drawings
Fig. 1 is a perspective view of an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of an embodiment of the present utility model.
Fig. 3 is an exploded view of an embodiment of the present utility model.
Fig. 4 is a perspective view of a ceramic cover body according to an embodiment of the present utility model.
Detailed Description
As shown in fig. 1 to 4, the embodiment of the utility model is a high-voltage direct current relay adopting magnetic steel to replace a contact spring, and comprises a shell 10, an electromagnetic driving mechanism 20 and a contact system 30 arranged on the electromagnetic driving mechanism 20, wherein the contact system 30 comprises a ceramic cover 31 arranged on the electromagnetic driving mechanism 20 and a contact component 32 arranged in the ceramic cover 31, the contact component 32 comprises two fixed contacts 33 arranged on the ceramic cover 31, a guide shaft 34 arranged in the ceramic cover 31, a movable contact 35 arranged on the guide shaft 34 in a sliding manner, a counter-force spring 36 and a driven magnetic steel 37 arranged on the guide shaft 34 in a sliding manner and used for driving the movable contact 35 to act, the push rod 21 of the electromagnetic driving mechanism 20 is provided with an active magnetic steel 40 used for driving the driven magnetic steel 37, the driven magnetic steel 37 acts along with the active magnetic steel 40 and can drive the movable contact 35 to slide on the guide shaft 34, and the movable contact 35 can be connected or disconnected with the two fixed contacts 33. The electromagnetic driving mechanism 20 comprises a U-shaped yoke 22, a yoke plate 23 arranged on the U-shaped yoke 22, a coil frame 24 arranged between the U-shaped yoke 23 and the yoke plate 23, a coil 25 arranged on the coil frame 24, and a movable iron core 26 arranged in the coil frame 24, wherein a push rod 21 is in linkage fit with the movable iron core 26, one end of the push rod 21 extends out of the yoke plate 23 and is connected to the active magnetic steel 40, a containing groove 231 is formed in the yoke plate 23 corresponding to the active magnetic steel 40, and the active magnetic steel 40 moves along with the push rod 21 and can reciprocate in the containing groove 231. The active magnetic steel and the electromagnetic driving mechanism adopt a modularized structural design, so that the electromagnetic driving mechanism and the contact assembly can be separated, the creepage distance between the low-voltage part and the high-voltage part can be increased, and the working reliability of the high-voltage direct current relay can be improved. The push rod 21 on correspond to the holding groove 231 department and be provided with down the shield 27, down be provided with on the shield 27 with initiative magnet steel 40 matched with spacing groove 271, initiative magnet steel 40 block in the spacing groove 271. The active magnetic steel is clamped in the limiting groove of the lower shielding plate, the lower shielding plate can play a shielding role, the active magnetic steel is prevented from interfering other parts, and the working reliability of the high-voltage direct current relay is improved.
As shown in fig. 2 to 4, the ceramic cover 31 includes an insulating plate 311 disposed on the yoke plate 23, and a ceramic cover body 312 disposed on the insulating plate 311, a receiving cavity 310 for placing the contact assembly 32 is formed between the insulating plate 311 and the ceramic cover body 312, and a stainless steel plate 41 is disposed between the insulating plate 311 and the yoke plate 23. The contact assembly is arranged in the accommodating cavity of the ceramic cover, the contact assembly and the electromagnetic driving mechanism can be separated independently, the creepage distance between the contact assembly and the electromagnetic driving mechanism can be increased, and the insulation performance is better. One end of the guide shaft 34 is connected to the ceramic cover body 312, the other end of the guide shaft 34 is clamped on the positioning boss 3111 of the insulating plate 311, the reaction spring 36 is sleeved on the guide shaft 34, one end of the reaction spring 36 is abutted in the positioning clamping groove 3121 of the ceramic cover body 312, and the other end of the reaction spring 36 is abutted in the limiting clamping groove 351 of the moving contact 35. The guide shaft block is between ceramic cover body and insulation board to be convenient for the guide shaft and the assembly of ceramic cover body, insulation board, and reaction spring block is between ceramic cover body, moving contact, thereby be convenient for reaction spring and the assembly of ceramic cover body, moving contact, and can guarantee that the moving contact can reliably carry out the divide-shut brake action, be favorable to improving this high voltage direct current relay's operational reliability. The inner wall of the ceramic cover body 312 is provided with a plurality of guiding ribs 3122 corresponding to two sides of the moving contact 35, and the moving contact 35 can slide reciprocally along the guiding ribs 3122 when the moving contact 35 performs the opening and closing actions. The guiding convex strips can play a guiding role on the moving contact, so that the moving contact can reliably execute switching-on and switching-off actions in the ceramic cover body, and the working reliability of the high-voltage direct-current relay is improved. The guide shaft 34 is provided with an upper shielding plate 38 corresponding to the lower part of the moving contact 35, a heat insulation pad 39 is arranged between the upper shielding plate 38 and the moving contact 35, the upper shielding plate 38 is provided with a positioning groove 381 matched with the passive magnetic steel 37, and the passive magnetic steel 37 is clamped in the positioning groove 381. The upper shielding plate can play a shielding role, so that the passive magnetic steel is prevented from interfering other parts, the heat insulation pad plays a heat insulation role, the temperature of the moving contact is prevented from affecting the performance of the passive magnet, and the working reliability of the high-voltage direct current relay is improved.
The electromagnetic driving mechanism drives the driven magnetic steel to act through the driving magnetic steel, and the driven magnetic steel drives the moving contact to act, so that the connection and disconnection of the moving contact and the fixed contact can be realized. The electromagnetic driving mechanism and the contact assembly adopt a magnetic steel structure driving mode, so that the contact assembly and the electromagnetic driving mechanism can be separated, the contact assembly and the electromagnetic driving mechanism are respectively arranged in independent spaces, the insulation distance between the contact assembly (high-voltage part) and the electromagnetic driving mechanism (low-voltage part) can be increased, the creepage distance is larger, and the safety is higher. Therefore, the high-voltage direct-current relay has the advantages of simple structure, stable and reliable performance, high creepage distance and good insulating property.
The foregoing is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or be modified to equivalent embodiments, without departing from the scope of the technology. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims (7)
1. The utility model provides an adopt magnet steel to replace high voltage direct current relay of contact spring, includes casing, electromagnetic drive mechanism, sets up the contact system on electromagnetic drive mechanism, its characterized in that: the contact system comprises a ceramic cover arranged on an electromagnetic driving mechanism and a contact assembly arranged in the ceramic cover, wherein the contact assembly comprises two fixed contacts arranged on the ceramic cover, a guide shaft arranged in the ceramic cover, a moving contact arranged on the guide shaft in a sliding manner, a counter-force spring and a driven magnetic steel arranged on the guide shaft in a sliding manner and used for driving the moving contact to act, the push rod of the electromagnetic driving mechanism is provided with a driving magnetic steel used for driving the driven magnetic steel, the driven magnetic steel acts along with the driving magnetic steel and can drive the moving contact to slide on the guide shaft, and the connection or disconnection of the moving contact and the two fixed contacts can be realized.
2. The high voltage dc relay employing magnetic steel instead of the contact spring according to claim 1, wherein: the electromagnetic driving mechanism comprises a U-shaped yoke, a yoke iron plate arranged on the U-shaped yoke, a coil rack arranged between the U-shaped yoke and the yoke iron plate, a coil arranged on the coil rack, and a movable iron core arranged in the coil rack, wherein a push rod is in linkage fit with the movable iron core, one end of the push rod extends outside the yoke iron plate and is connected with the driving magnetic steel, a containing groove is formed in the yoke iron plate corresponding to the driving magnetic steel, and the driving magnetic steel moves along with the push rod and can reciprocate in the containing groove.
3. The high voltage dc relay employing magnetic steel instead of the contact spring according to claim 2, wherein: the push rod on correspond storage tank department and be provided with down the shield plate, lower shield plate on be provided with initiative magnet steel matched with spacing groove, initiative magnet steel block in the spacing groove.
4. The high voltage dc relay employing magnetic steel instead of the contact spring according to claim 2, wherein: the ceramic cover comprises an insulating plate arranged on the yoke plate and a ceramic cover body arranged on the insulating plate, a containing cavity for containing the contact assembly is formed between the insulating plate and the ceramic cover body, and a stainless steel plate is arranged between the insulating plate and the yoke plate.
5. The high voltage dc relay employing magnetic steel instead of the contact spring according to claim 4, wherein: the ceramic cover is characterized in that one end of the guide shaft is connected to the ceramic cover body, the other end of the guide shaft is clamped on the positioning boss of the insulating plate, the counter-force spring is sleeved on the guide shaft, one end of the counter-force spring is abutted to the positioning clamping groove of the ceramic cover body, and the other end of the counter-force spring is abutted to the limiting clamping groove of the moving contact.
6. The high voltage dc relay employing magnetic steel instead of the contact spring according to claim 4, wherein: the ceramic cover is characterized in that a plurality of guide convex strips are respectively arranged on the inner wall of the ceramic cover body at two sides of the corresponding moving contact, and the moving contact can slide back and forth along the guide convex strips when the moving contact performs opening and closing actions.
7. The high voltage direct current relay employing magnetic steel instead of a contact spring according to claim 1 or 2, wherein: the guide shaft on correspond moving contact below department and be provided with the shield plate, last shield plate and moving contact between be provided with the heat insulating mattress, last shield plate be provided with passive magnet steel matched with constant head tank, passive magnet steel block in the constant head tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321250799.0U CN219696354U (en) | 2023-05-20 | 2023-05-20 | High-voltage direct-current relay adopting magnetic steel to replace contact spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321250799.0U CN219696354U (en) | 2023-05-20 | 2023-05-20 | High-voltage direct-current relay adopting magnetic steel to replace contact spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696354U true CN219696354U (en) | 2023-09-15 |
Family
ID=87939459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321250799.0U Active CN219696354U (en) | 2023-05-20 | 2023-05-20 | High-voltage direct-current relay adopting magnetic steel to replace contact spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696354U (en) |
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2023
- 2023-05-20 CN CN202321250799.0U patent/CN219696354U/en active Active
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