CN220041647U - High-voltage direct-current relay capable of improving insulation capacity - Google Patents
High-voltage direct-current relay capable of improving insulation capacity Download PDFInfo
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- CN220041647U CN220041647U CN202320752581.9U CN202320752581U CN220041647U CN 220041647 U CN220041647 U CN 220041647U CN 202320752581 U CN202320752581 U CN 202320752581U CN 220041647 U CN220041647 U CN 220041647U
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- 238000009413 insulation Methods 0.000 title claims abstract description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 14
- 238000001465 metallisation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 8
- 238000002679 ablation Methods 0.000 description 5
- 230000008033 biological extinction Effects 0.000 description 5
- 239000002923 metal particle Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a high-voltage direct current relay capable of improving insulation capacity, which comprises an insulation housing, a fixed contact, a movable reed and a yoke iron plate; the bottom end of the insulating housing is connected with the yoke plate, and a cavity is defined by the insulating housing and the yoke plate; the two fixed contacts are respectively fixed on the insulating housing and extend into the cavity; the movable reed is accommodated in the cavity and correspondingly matched with the two fixed contacts; in the insulating housing, at least one first step with a downward step face is arranged between the inner side of the joint of the insulating housing and the yoke plate and the inner wall of the insulating housing so as to improve the insulating capability of the relay. The utility model can reduce insulation short circuit and insulation drop caused by arc splashing; meanwhile, the creepage distance is increased, and the insulation resistance is increased. The arc extinguishing requirements of high voltage and large current are met, and meanwhile, the manufacturing cost of the product is not greatly increased.
Description
Technical Field
The present utility model relates to a dc relay, and more particularly, to a high-voltage dc relay capable of improving insulation capability.
Background
A relay is an electronically controlled device having a control system (also known as an input loop) and a controlled system (also known as an output loop), commonly used in automatic control circuits, which in effect is an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays roles of automatic regulation, safety protection, circuit switching and the like. The high-voltage direct current relay is one of the relays, most of the existing high-voltage direct current relays adopt a movable reed direct-acting structure, namely, two fixed contacts are matched with one movable reed, and according to the actual application of a vehicle, the contacts need to be switched on and off by load and switched on and off by load, so that the switching function is realized, and arc ablation of internal contacts can occur in the processes. After arc ablation of the direct current relay, the inner wall of the contact part is polluted due to arc ablation splashing, so that the originally insulated ceramic and plastic shells are polluted, and insulation short circuit and insulation decline are formed.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a high-voltage direct-current relay capable of improving the insulation capacity, and insulation short circuit and insulation drop caused by arc splashing can be reduced through structural improvement; the creepage distance is increased, the insulation resistance is increased, the arc extinction requirement of high voltage and high current can be met, and meanwhile, the manufacturing cost of the product is not greatly increased.
The technical scheme adopted for solving the technical problems is as follows: a high-voltage direct current relay capable of improving insulation capability comprises an insulation housing, a fixed contact, a movable reed and a yoke iron plate; the bottom end of the insulating housing is connected with the yoke plate, and a cavity is defined by the insulating housing and the yoke plate; the two fixed contacts are respectively fixed on the insulating housing and extend into the cavity; the movable reed is accommodated in the cavity and correspondingly matched with the two fixed contacts; in the insulating housing, at least one first step with a downward step face is arranged between the inner side of the joint of the insulating housing and the yoke plate and the inner wall of the insulating housing so as to improve the insulating capability of the relay.
The first step is one.
The number of the first steps is more than two.
The high-voltage direct-current relay further comprises an insulating seat, and the insulating seat is arranged on the yoke iron plate; the periphery of the insulating seat is provided with an outer edge with a step surface facing upwards, and the outer edge of the insulating seat is matched with the bottom end of the insulating housing; the periphery of the insulating seat is provided with at least one second step with a step surface facing upwards in an extending way from the outer edge of the insulating seat to the inner side direction so as to be in clearance fit with the first step of the insulating housing.
The first step is one, and the second step is one; the step surface of the first step is in clearance fit with the step surface of the second step.
The number of the first steps is two, and the number of the second steps is one; the step surface of one first step is in clearance fit with the step surface of the second step; the step surface of the other first step is in clearance opposite fit with the edge of the top end of the insulating seat.
The number of the first steps is two, and the number of the second steps is two; the step surfaces of the two first steps are in clearance fit with the step surfaces of the two second steps.
The insulating housing is a ceramic housing; the relay also comprises a metal frame piece; the bottom end of the ceramic cover is provided with a metallization layer, the ceramic cover is fixed with the upper end of the metal frame sheet through the metallization layer, the lower end of the metal frame sheet is fixed with the yoke plate, and the cavity is defined by the ceramic cover, the metal frame sheet and the yoke plate; in the ceramic cover, the first step is arranged between the inner side of the joint of the metal frame piece and the inner wall of the ceramic cover.
The insulating housing is a plastic housing.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, as the insulating housing is adopted, at least one first step with a downward step face is arranged between the inner side of the joint of the metal frame piece or the yoke plate and the inner wall of the insulating housing, so that the insulating capability of the relay is improved. According to the structure, the first step is arranged on the insulating housing, when metal particles generated by arc ablation are splashed to the side face of the insulating housing, the step forms a concave 'eave face', so that the metal particles are prevented from being splashed and polluted to a certain extent. Therefore, insulation short circuit and insulation drop caused by arc splashing can be reduced by utilizing the first step; the creepage distance is increased, the insulation resistance is increased, the arc extinction requirement of high voltage and high current can be met, and meanwhile, the manufacturing cost of the product is not greatly increased.
2. The high-voltage direct-current relay further comprises an insulating seat, wherein the insulating seat is arranged on the yoke plate; the periphery of the insulating seat is provided with an outer edge with a step surface facing upwards, and the outer edge of the insulating seat is matched with the bottom end of the insulating housing; the periphery of the insulating seat is provided with at least one second step with a step surface facing upwards in an extending way from the outer edge of the insulating seat to the inner side direction so as to be in clearance fit with the first step of the insulating housing. According to the structure, the first step and the second step are respectively arranged on the insulating housing and the insulating seat, so that the first step and the second step play a role of protecting the convex part, and insulation short circuit and insulation decline caused by arc splashing can be reduced due to the staggered design of the first step of the insulating housing and the second step of the insulating seat; the creepage distance is increased, the insulation resistance is increased, the arc extinction requirement of high voltage and high current can be met, and meanwhile, the manufacturing cost of the product is not greatly increased; the utility model has the advantages of simple part forming, simple assembly, longer insulation path, namely longer creepage distance, larger insulation resistance, smaller leakage current and safer insulation.
The utility model is described in further detail below with reference to the drawings and examples; the high voltage dc relay capable of improving insulation ability of the present utility model is not limited to the embodiment.
Drawings
FIG. 1 is an exploded schematic view of a partial construction of a first embodiment of the present utility model;
FIG. 2 is a structural cross-sectional view of a partial construction of a first embodiment of the present utility model;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is an exploded view of a partial construction of a second embodiment of the present utility model;
FIG. 5 is a structural cross-sectional view of a partial construction of a second embodiment of the present utility model;
FIG. 6 is an enlarged schematic view of portion B of FIG. 5;
FIG. 7 is an exploded schematic view of a partial construction of a third embodiment of the present utility model;
FIG. 8 is a structural cross-sectional view of a partial construction of a third embodiment of the present utility model;
FIG. 9 is an enlarged schematic view of portion C of FIG. 8;
FIG. 10 is an exploded schematic view of a partial construction of a fourth embodiment of the present utility model;
FIG. 11 is a structural cross-sectional view of a partial construction of a fourth embodiment of the present utility model;
fig. 12 is an enlarged schematic view of a portion D in fig. 11.
Detailed Description
Example 1
Referring to fig. 1 to 3, the high-voltage direct current relay capable of improving insulation capability comprises an insulation housing 1, a fixed contact 2, a movable reed 3 and a yoke iron plate (not shown in the figure), wherein the insulation housing 1 is a ceramic housing, and the high-voltage direct current relay further comprises a metal frame sheet 4, wherein a shell, an electromagnet unit, an arc extinguishing unit, a pushing unit and the like are omitted in the figure; the bottom end of the insulating housing 1 is provided with a metallization layer 11, the insulating housing 1 is fixed with the upper end of the metal frame sheet 4 through the metallization layer 11, the lower end of the metal frame sheet 4 is fixed with the yoke plate, and a cavity 12 is defined by the insulating housing 1, the metal frame sheet 4 and the yoke plate; the two fixed contacts 2 are respectively fixed at the top end of the insulating housing 1, and the bottom ends of the fixed contacts 2 extend into the cavity 12; the movable reed 3 is accommodated in the cavity 12 and is matched below the two fixed contacts 2, and two ends of the movable reed 3 are respectively matched with the bottom ends of the two fixed contacts 2; in the insulating housing 1, at least one first step 13 with a downward step face is arranged between the inner side of the connection part with the metal frame sheet 4 and the inner wall of the insulating housing 1 so as to enhance the insulation resistance after the service life of the high-voltage direct-current relay. The number of the first steps 13 in this embodiment is one, but may be plural.
In other embodiments, the insulating housing 1 may be a plastic housing. In this case, a metal frame sheet is not required.
In this embodiment, the first step 13 is integrally formed with the insulating housing 1.
In other embodiments, the first step 13 may be embedded on the insulating housing 1.
In the high-voltage direct-current relay capable of improving the insulation capacity, at least one first step 13 with a downward step face is arranged between the inner side of a joint with a metal frame piece 4 and the inner wall of the insulation housing 1 in the insulation housing 1, so that the insulation capacity of the relay is improved. According to the structure, the first step 13 is arranged on the insulating housing 1, and when metal particles generated by arc ablation are splashed to the side face of the insulating housing, the step forms a concave 'eave face', so that the metal particles are prevented from being splashed and polluted to a certain extent. Therefore, insulation short circuit and insulation drop caused by arc splashing can be reduced by utilizing the first step; the creepage distance is increased, the insulation resistance is increased, the arc extinction requirement of high voltage and high current can be met, and meanwhile, the manufacturing cost of the product is not greatly increased.
Example two
Referring to fig. 4 to 6, a high voltage dc relay capable of improving insulation ability according to the present utility model is different from the first embodiment in that the high voltage dc relay further includes an insulation holder 5, the insulation holder 5 being mounted on a yoke plate; the periphery of the insulating seat 5 is provided with an outer edge with a step surface facing upwards, and the outer edge of the insulating seat 5 is matched with the bottom end of the insulating housing 1; the outer periphery of the insulating base 5 is provided with at least one second step 51 with a step surface facing upwards extending from the outer periphery of the insulating base 5 in the inward direction for clearance fit with the first step 13 of the insulating housing 1.
In this embodiment, the second step 51 is one; the step surface of the first step 13 is in clearance fit with the step surface of the second step 51.
In this embodiment, the second step 51 is integrally formed with the insulating base 5. In other embodiments, the second step 51 may be embedded on the insulating base 5.
The utility model relates to a high-voltage direct current relay capable of improving insulation capacity, which adopts an insulating housing 1, wherein at least one first step 13 with a downward step surface is arranged between the inner side of a joint with a metal frame piece 4 and the inner wall of the insulating housing 1 so as to improve the insulation capacity of the relay; the high-voltage direct-current relay further comprises an insulating seat 5, and the insulating seat 5 is arranged on the yoke plate; the periphery of the insulating seat 5 is provided with an outer edge with a step surface facing upwards, and the outer edge of the insulating seat 5 is matched with the bottom end of the insulating housing 1; the outer periphery of the insulating base 5 is provided with at least one second step 51 with a step surface facing upwards extending from the outer periphery of the insulating base 5 in the inward direction for clearance fit with the first step 13 of the insulating housing 1. According to the structure, the first step 13 and the second step 51 are arranged on the insulating housing 1 and the insulating seat 5, so that the first step 13 and the second step 51 play a role of a protection convex part, and as the first step 13 of the insulating housing 1 and the second step 51 of the insulating seat 5 are designed in a staggered manner, insulation short circuit and insulation drop caused by electric arc splashing can be reduced; the creepage and the insulation resistance are increased, the arc extinction requirements of high voltage and high current can be met, and meanwhile, the manufacturing cost of the product is not greatly increased; the utility model has the advantages of simple part forming, simple assembly, longer insulation path, namely longer creepage distance, larger insulation resistance, smaller leakage current and safer insulation.
Example III
Referring to fig. 7 to 9, the present utility model is a high voltage dc relay with enhanced insulation resistance after lifetime, which is different from the second embodiment in that the number of the first steps 13 is two (i.e. the first steps 131 and 132), and the number of the second steps 51 is one; the step surface of the first step 131 is in clearance fit with the step surface of the second step 51; the step surface of the first step 132 is in clearance opposite fit with the edge of the top end of the insulating base 5.
Example IV
Referring to fig. 10 to 12, the present utility model is a high voltage dc relay with enhanced insulation resistance after lifetime, which is different from the second embodiment in that the number of the first steps 13 is two (i.e. the first steps 131 and 132) and the number of the second steps 51 is two (i.e. the second steps 511 and 512); the step surfaces of the two first steps 131, 132 are in opposite clearance fit with the step surfaces of the two second steps 511, 512, respectively.
In the present utility model, in the description, the directions or positional relationships indicated by "up", "down", "top", "bottom" and the like are used for the convenience of describing the present utility model based on the directions or positional relationships shown in the drawings, but are not meant to indicate or imply that the device must have a specific direction, be configured and operated in a specific direction, for example, when the product is placed sideways with respect to the embodiment, the original directions may be changed to be left and right, and therefore, the scope of protection of the present utility model is not to be construed as being limited. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
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 (9)
1. A high-voltage direct current relay capable of improving insulation capability comprises an insulation housing, a fixed contact, a movable reed and a yoke iron plate; the bottom end of the insulating housing is connected with the yoke plate, and a cavity is defined by the insulating housing and the yoke plate; the two fixed contacts are respectively fixed on the insulating housing and extend into the cavity; the movable reed is accommodated in the cavity and correspondingly matched with the two fixed contacts; the method is characterized in that: in the insulating housing, at least one first step with a downward step face is arranged between the inner side of the joint of the insulating housing and the yoke plate and the inner wall of the insulating housing so as to improve the insulating capability of the relay.
2. The high voltage direct current relay capable of improving insulation ability according to claim 1, wherein: the first step is one.
3. The high voltage direct current relay capable of improving insulation ability according to claim 1, wherein: the number of the first steps is more than two.
4. The high voltage direct current relay capable of improving insulation ability according to claim 1, wherein: the high-voltage direct-current relay further comprises an insulating seat, and the insulating seat is arranged on the yoke iron plate; the periphery of the insulating seat is provided with an outer edge with a step surface facing upwards, and the outer edge of the insulating seat is matched with the bottom end of the insulating housing; the periphery of the insulating seat is provided with at least one second step with a step surface facing upwards in an extending way from the outer edge of the insulating seat to the inner side direction so as to be in clearance fit with the first step of the insulating housing.
5. The high-voltage direct-current relay capable of improving insulation capacity according to claim 4, wherein: the first step is one, and the second step is one; the step surface of the first step is in clearance fit with the step surface of the second step.
6. The high-voltage direct-current relay capable of improving insulation capacity according to claim 4, wherein: the number of the first steps is two, and the number of the second steps is one; the step surface of one first step is in clearance fit with the step surface of the second step; the step surface of the other first step is in clearance opposite fit with the edge of the top end of the insulating seat.
7. The high-voltage direct-current relay capable of improving insulation capacity according to claim 4, wherein: the number of the first steps is two, and the number of the second steps is two; the step surfaces of the two first steps are in clearance fit with the step surfaces of the two second steps.
8. The high-voltage direct-current relay capable of improving insulation ability according to any one of claims 1 to 7, wherein: the insulating housing is a ceramic housing; the relay also comprises a metal frame piece; the bottom end of the ceramic cover is provided with a metallization layer, the ceramic cover is fixed with the upper end of the metal frame sheet through the metallization layer, the lower end of the metal frame sheet is fixed with the yoke plate, and the cavity is defined by the ceramic cover, the metal frame sheet and the yoke plate; in the ceramic cover, the first step is arranged between the inner side of the joint of the metal frame piece and the inner wall of the ceramic cover.
9. The high-voltage direct-current relay capable of improving insulation ability according to any one of claims 1 to 7, wherein: the insulating housing is a plastic housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320752581.9U CN220041647U (en) | 2023-04-07 | 2023-04-07 | High-voltage direct-current relay capable of improving insulation capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320752581.9U CN220041647U (en) | 2023-04-07 | 2023-04-07 | High-voltage direct-current relay capable of improving insulation capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041647U true CN220041647U (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320752581.9U Active CN220041647U (en) | 2023-04-07 | 2023-04-07 | High-voltage direct-current relay capable of improving insulation capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041647U (en) |
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- 2023-04-07 CN CN202320752581.9U patent/CN220041647U/en active Active
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