CN212032952U - High-voltage direct-current relay with auxiliary contacts - Google Patents
High-voltage direct-current relay with auxiliary contacts Download PDFInfo
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- CN212032952U CN212032952U CN202020715090.3U CN202020715090U CN212032952U CN 212032952 U CN212032952 U CN 212032952U CN 202020715090 U CN202020715090 U CN 202020715090U CN 212032952 U CN212032952 U CN 212032952U
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Abstract
The utility model discloses a high-voltage direct-current relay with an auxiliary contact, which comprises a shell, a ceramic cover, a coil rack, a main static contact and an auxiliary static contact; the two main static contacts and the two auxiliary static contacts are respectively arranged on the top wall of the ceramic cover, and the two auxiliary static contacts are respectively bent from the top end of the ceramic cover to the outside of the side surfaces of the ceramic cover and the coil rack through the electric connectors and are led to the bottom end of the shell; the upper end surface of the top wall of the ceramic cover is also provided with a insulating sleeve in a shape like a Chinese character 'ri', two openings of the insulating sleeve in the shape like the Chinese character 'ri' are respectively sleeved on the peripheries of the two main static contacts and enclose a glue dispensing groove after the main static contacts are welded with the ceramic cover; the parts of the two electrical connections which are located on the upper end face of the top wall of the ceramic cap are enclosed in the insulating sleeve during injection molding. The utility model discloses can enough satisfy the insulation requirement between high pressure and the low pressure, can realize again that the first glue of static contact and ceramic cover welding back is glued and is overlapped the shell again, can control glue and can not cover on exerted load draws forth the end, reduced the technology degree of difficulty.
Description
Technical Field
The utility model relates to a relay technical field especially relates to a take high voltage direct current relay of auxiliary contact.
Background
The existing direct current relay mostly adopts a movable spring direct-acting type (also called solenoid direct-acting type) structure, a contact part of the direct current relay comprises two static contacts (namely load leading-out ends) and a movable assembly, the movable assembly comprises a movable spring part and a push rod assembly, the movable spring part comprises a movable spring and movable contacts at two ends of the movable spring, the movable spring is in a direct-acting type, when the movable contacts at two ends of the movable spring are respectively contacted with the two static contacts, current flows in from one static contact, and flows out from the other static contact after passing through the movable spring. In order to realize the functions of monitoring and the like, the direct current relay in the prior art is also provided with an auxiliary contact, the direct current relay in the prior art is characterized in that an auxiliary leading-out end is arranged on a ceramic cover, the part of the load leading-out end of the direct current relay, which is used for realizing the electric connection with an external component, is arranged at the top, and the part of the auxiliary leading-out end, which is used for realizing the electric connection with the external component, is arranged at the bottom, so that the auxiliary leading-out end is required to be led to the bottom of the relay from the top of the relay, and therefore, the insulation problem between high voltage (the load leading-out end) and low voltage (the auxiliary leading-out end) can occur at the top of the ceramic cover. On the other hand, glue is needed to be dispensed after the static contact (namely the load leading-out end) is welded with the ceramic cover, in the prior art, a retaining wall is arranged around the opening of the static contact of the shell to form a glue dispensing groove, but in the mode, the shell is sleeved firstly and then glue is dispensed, glue is coated on the exposed load leading-out end, and the control is not good; after the glue is covered on the exposed load leading-out end, when the load leading-out end is connected with the outside (copper bar), the phenomenon that the part covered with the glue is not conducted can occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a take high voltage direct current relay of auxiliary contact, through structural improvement, can enough satisfy high pressure (the load draws forth the end) and low pressure (supplementary drawing forth the end) between the insulating requirement, can realize again that static contact and ceramic cover welding back glue earlier and overlap the shell again, can control glue can not cover and draw forth the end at exerted load, reduced the technology degree of difficulty.
The utility model provides a technical scheme that its technical problem adopted is: a high-voltage direct-current relay with an auxiliary contact comprises a shell, a ceramic cover, a coil rack, a main static contact and an auxiliary static contact; the ceramic cover and the coil rack are distributed up and down and are accommodated in the shell; the two main static contacts are arranged on the top wall of the ceramic cover at a first interval, and the upper ends of the two main static contacts are exposed out of the shell to realize the electrical connection between the top of the relay and an external load; the two auxiliary static contacts are arranged on the top wall of the ceramic cover at a second interval and are insulated and isolated from the two main static contacts through the ceramic cover; the two auxiliary static contacts are also led out through electric connectors respectively; the upper end surface of the top wall of the ceramic cover is also provided with a insulating sleeve in a shape like a Chinese character 'ri', two openings of the insulating sleeve in the shape like the Chinese character 'ri' are respectively sleeved on the peripheries of the two main static contacts and enclose a glue dispensing groove after the main static contacts are welded with the ceramic cover; the parts of the two electric connectors, which are positioned on the upper end surface of the top wall of the ceramic cover, are coated in the insulating sleeve during injection molding, so that the lead-out part of the auxiliary static contact is insulated and isolated from the main static contact.
The two electric connectors are also bent from the top end of the ceramic cover to the outside of the side surface of the ceramic cover and the coil rack and led to the bottom end of the shell, and are exposed downwards at the bottom end of the shell to realize the electric connection with the external component from the bottom of the relay.
The projection of the connecting line between the two auxiliary fixed contacts on the horizontal plane is intersected with the projection of the connecting line between the two main fixed contacts on the horizontal plane, and the connecting line between the two auxiliary fixed contacts passes through the approximate midpoint of the connecting line between the two main fixed contacts.
The projection of the connecting line between the two auxiliary fixed contacts on the horizontal plane is vertically intersected with the projection of the connecting line between the two main fixed contacts on the horizontal plane.
And a groove for increasing the creepage distance between the two main fixed contacts is further arranged at a first interval position corresponding to the two main fixed contacts on the top end surface of the top wall of the ceramic cover, and a middle cross bar in a shape like a Chinese character 'ri' of the insulating sleeve corresponds to the groove.
The bottom surface of the middle transverse bar in the shape of the Chinese character 'ri' of the insulating sleeve is provided with a rib protruding downwards, the rib is in clearance fit in the groove of the ceramic cover so as to realize the coarse positioning of the insulating sleeve on the ceramic cover and increase the creepage distance between the two main static contacts.
The two auxiliary static contacts are respectively positioned at two ends of the middle transverse bar shaped like the Chinese character 'ri' of the insulating sleeve, two ends of the middle transverse bar shaped like the Chinese character 'ri' of the insulating sleeve are respectively provided with a first through hole which enables the two auxiliary static contacts to respectively extend upwards, and one end of each of the two electric connectors is respectively matched in the corresponding first through hole of the insulating sleeve and is welded and fixed with the corresponding auxiliary static contact in a soldering mode.
The two electric connecting pieces are respectively of a strip piece type, one ends of the two electric connecting pieces are respectively provided with a second through hole, and the two auxiliary static contacts respectively penetrate through the corresponding second through holes and are welded and fixed with one end of the corresponding electric connecting piece in a soldering mode.
One end of each of the two electric connecting pieces is respectively positioned at two sides of the connecting line of the two main fixed contacts, one of the two electric connecting pieces is wrapped in one of the two main fixed contacts by one side of the connecting line of the two main fixed contacts and is bent to the position, opposite to the one main fixed contact, of the other side of the connecting line of the two main fixed contacts, and then the position is bent to the outside of the side surfaces of the ceramic cover and the coil rack; the other one of the two electric connectors extends from the other side of the connecting line of the two main fixed contacts to the position opposite to the other main fixed contact and then is bent out of the side surface of the ceramic cover and the coil rack.
The parts of the two electric connectors, which are positioned outside the side surfaces of the ceramic cover and the coil rack, are respectively coated with a first injection molding part.
And a second injection molding part is connected between the two first injection molding parts.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the insulating sleeve which is in a shape like a Chinese character 'ri' and is arranged on the upper end surface of the top wall of the ceramic cover, and two opening parts of the Chinese character 'ri' shape of the insulating sleeve are respectively sleeved on the peripheries of the two main static contacts and are enclosed into the glue dispensing groove after the main static contacts are welded with the ceramic cover; the parts of the two electric connectors, which are positioned on the upper end surface of the top wall of the ceramic cover, are coated in the insulating sleeve during injection molding, so that the lead-out part of the auxiliary static contact is insulated and isolated from the main static contact. The utility model discloses a this kind of structure, after insulating cover and two supplementary stationary contacts and electric connector cooperate, can realize on the one hand that supplementary static contact and lead-out part and main static contact between the insulation isolation (namely the insulation isolation between high pressure and low pressure), on the other hand can utilize the glue of insulating cover formation to glue the groove and realize that the static contact is glued earlier after welding with the ceramic cover and overlap the shell again, can control glue can not cover on the load extraction end that exposes to the technology degree of difficulty has been reduced; and the phenomenon that the part covered with the glue is not conducted can not occur when the load leading-out end is connected with the outside (copper bar).
2. The utility model discloses owing to adopted the part that is in the up end of the roof of ceramic cover with two electric connector to be cladded wherein when insulating cover injection moulding to and the part outside the side that is in ceramic cover, coil former of two electric connector still respectively the outsourcing have first injection molding, still be connected with the second injection molding between two first injection moldings. The utility model discloses a this kind of structure has avoided the low pressure to walk the line disorder, the drawback of unattractive.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment, and the high voltage dc relay with the auxiliary contacts is provided.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the present invention;
fig. 3 is a cross-sectional view of an embodiment of the present invention (taken along the line connecting two main stationary contacts);
fig. 4 is a cross-sectional view of an embodiment of the present invention (taken along the line connecting two auxiliary stationary contacts);
FIG. 5 is an enlarged schematic view of section A of FIG. 3;
fig. 6 is a schematic perspective view of an embodiment of the present invention (with the housing removed);
fig. 7 is a top view (with the housing removed) of an embodiment of the invention;
fig. 8 is a top view of an embodiment of the invention (with the housing and insulating sleeve removed);
fig. 9 is a top view of an embodiment of the invention (with the housing, insulating sleeve and electrical connectors removed);
fig. 10 is a front view of an embodiment of the invention (with the housing removed);
fig. 11 is a schematic perspective view of an insulating sheath according to an embodiment of the present invention;
fig. 12 is a top view of an insulating sleeve of an embodiment of the present invention;
fig. 13 is a bottom view of an insulating sleeve of an embodiment of the present invention;
fig. 14 is a perspective view of an electrical connector according to an embodiment of the present invention mated with an insulating sleeve, a first injection molded part, and a second injection molded part;
FIG. 15 is a top view of an electrical connector of an embodiment of the present invention mated with an insulating sleeve, a first injection molded part, and a second injection molded part;
FIG. 16 is a front view of an electrical connector of an embodiment of the present invention mated with an insulating sleeve, a first injection molded part, and a second injection molded part;
FIG. 17 is a rear view of an electrical connector of an embodiment of the present invention mated with an insulating sleeve, a first injection molded part, and a second injection molded part;
figure 18 is a side view of an electrical connector of an embodiment of the present invention mated to an insulating sleeve, a first injection molded part, and a second injection molded part.
Detailed Description
Examples
Referring to fig. 1 to 18, the high voltage dc relay with auxiliary contacts of the present invention includes a housing 1, a ceramic cover 2, a coil former 3, a main static contact 4 and an auxiliary static contact 5; the ceramic cover 2 and the coil rack 3 are distributed up and down and are accommodated in the shell 1; two main static contacts 4 are installed at the top wall of the ceramic cover 2 at a first interval, and the upper ends of the two main static contacts 4 are exposed out of the housing 1 to realize the electrical connection from the top of the relay to an external load (for example, through copper bar switching); the two auxiliary static contacts 5 are mounted on the top wall 21 of the ceramic cover 2 at a second interval and are isolated from the two main static contacts 4 through the ceramic cover 2 in an insulating manner, and the two auxiliary static contacts 5 are bent from the top end of the ceramic cover 2 to the outside of the side surfaces of the ceramic cover 2 and the coil rack 3 through electric connectors 6 and are led to the bottom end of the housing 1 respectively, and are exposed out of the bottom end of the housing 1 downwards so as to realize the electric connection from the bottom of the relay to an external component (such as a copper bar); an insulation sleeve 7 in a shape of a Chinese character 'ri' is further mounted on the upper end face of the top wall 21 of the ceramic cover 2, and two openings 71 in the shape of the Chinese character 'ri' of the insulation sleeve 7 are respectively sleeved on the peripheries of the two main static contacts 4 and enclose a glue dispensing groove after the main static contacts are welded with the ceramic cover; the parts 61 of the two electrical connectors 6, which are positioned on the upper end face of the top wall of the ceramic cover, are covered in the insulating sleeve 7 during injection molding, so that the lead-out part of the auxiliary static contact is insulated and isolated from the main static contact 4.
In this embodiment, a projection of a connection line between the two auxiliary stationary contacts 5 on the horizontal plane intersects with a projection of a connection line between the two main stationary contacts 4 on the horizontal plane, and the connection line between the two auxiliary stationary contacts 5 passes through an approximate midpoint of the connection line between the two main stationary contacts 4.
In this embodiment, a projection of a connecting line between the two auxiliary stationary contacts 5 on a horizontal plane is vertically intersected with a projection of a connecting line between the two main stationary contacts 4 on the horizontal plane.
In this embodiment, a groove 22 for increasing a creepage distance between the two main stationary contacts 4 is further disposed on a top end surface of the top wall 21 of the ceramic cover 2 at a position corresponding to the first interval between the two main stationary contacts 4, and the middle cross bar 72 of the insulating sleeve 7 in the shape of a Chinese character 'ri' corresponds to the groove 22.
In this embodiment, the bottom surface of the middle cross bar 72 of the insulating sleeve 7 in the shape of a Chinese character ri is provided with a rib 721 protruding downward, and the rib 721 is in clearance fit with the groove 22 of the ceramic cover 2 to realize the coarse positioning of the insulating sleeve 7 on the ceramic cover 2, increase the creepage distance between the two main and stationary contacts 4, and isolate and block the direct penetration through the groove 22 under high voltage.
In this embodiment, the two auxiliary stationary contacts 5 are respectively located at two ends of a central horizontal bar 72 shaped like a Chinese character 'ri' of the insulating sleeve 7, two ends of the central horizontal bar 72 shaped like a Chinese character 'ri' of the insulating sleeve are respectively provided with first through holes 73 through which the two auxiliary stationary contacts 5 respectively extend upward, and one ends of the two electrical connectors 6 are respectively matched in the corresponding first through holes 73 of the insulating sleeve 7 and are welded and fixed with the corresponding auxiliary stationary contacts 5 in a soldering manner; the other ends of the two electrical connectors 6 are exposed as a connecting portion at the bottom end of the housing 1 to electrically connect with an external component (such as a copper bar) from the bottom of the relay.
In this embodiment, the two electrical connectors 6 are respectively in a strip sheet shape, one end of each of the two electrical connectors 6 is provided with a second through hole 62, and the two auxiliary stationary contacts 5 respectively penetrate through the corresponding second through holes 62 and are fixed to one end of the corresponding electrical connector 6 in a soldering manner.
In this embodiment, one end of the two electrical connectors 6 is respectively located at two sides of the connection line of the two main fixed contacts 4, one electrical connector 601 of the two electrical connectors 6 is bent from one side of the connection line of the two main fixed contacts 4 to the other side of the connection line of the two main fixed contacts 4, which is opposite to the one main fixed contact 41, and then bent out of the side face of the ceramic cover or the coil former; the other electrical connector 602 of the two electrical connectors extends from the other side of the connecting line of the two main fixed contacts to a position opposite to the other main fixed contact 42 and then bends out of the side surface of the ceramic cover and the coil frame.
In this embodiment, the parts of the two electrical connectors outside the side surfaces of the ceramic cover and the coil rack are respectively coated with a first injection molding part 81.
In this embodiment, a second injection-molded part 82 is further connected between the two first injection-molded parts 81.
The utility model discloses a high-voltage direct-current relay with auxiliary contacts, which adopts the technical scheme that an insulating sleeve 7 in a shape like a Chinese character 'ri' is also arranged on the upper end surface of the top wall 21 of a ceramic cover 2, two mouth parts 71 in the shape like a Chinese character 'ri' of the insulating sleeve 7 are respectively sleeved on the peripheries of two main static contacts 4 and form a glue dispensing groove after the main static contacts 4 are welded with the ceramic cover 2; the parts 61 of the two electrical connectors 6, which are positioned on the upper end face of the top wall of the ceramic cover, are covered in the insulating sleeve 7 during injection molding, so that the lead-out part of the auxiliary static contact is insulated and isolated from the main static contact 4. The utility model discloses a this kind of structure, after insulating cover 7 cooperatees with two supplementary stationary contacts 5 and electric connector 6 thereof, can realize on the one hand that supplementary static contact 5 and the isolation between leading-out part and main static contact 4 (namely the isolation between high pressure and low pressure), on the other hand is in, can utilize the glue that insulating cover 7 formed to glue the groove and realize that the static contact glues earlier after welding with the ceramic cover and overlaps the shell, can control glue and can not cover on the load leading-out end that exposes to the technology degree of difficulty has been reduced; and the phenomenon that the part covered with the glue is not conducted can not occur when the load leading-out end is connected with the outside (copper bar).
The utility model discloses a take high-voltage direct current relay of auxiliary contact has adopted the part 61 of the up end that is in the roof of ceramic cover with two electric connector 6 to be wrapped wherein when insulating cover 7 injection moulding to and the part outside the side that is in ceramic cover, coil former of two electric connector 6 still has first injection molding 81 of outsourcing respectively, still is connected with second injection molding 82 between two first injection molding 81. The utility model discloses a this kind of structure has avoided the low pressure to walk the line disorder, the drawback of unattractive.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (11)
1. A high-voltage direct-current relay with an auxiliary contact comprises a shell, a ceramic cover, a coil rack, a main static contact and an auxiliary static contact; the ceramic cover and the coil rack are distributed up and down and are accommodated in the shell; the two main static contacts are arranged on the top wall of the ceramic cover at a first interval, and the upper ends of the two main static contacts are exposed out of the shell to realize the electrical connection between the top of the relay and an external load; the two auxiliary static contacts are arranged on the top wall of the ceramic cover at a second interval and are insulated and isolated from the two main static contacts through the ceramic cover; the method is characterized in that: the two auxiliary static contacts are also led out through electric connectors respectively; the upper end surface of the top wall of the ceramic cover is also provided with a insulating sleeve in a shape like a Chinese character 'ri', two openings of the insulating sleeve in the shape like the Chinese character 'ri' are respectively sleeved on the peripheries of the two main static contacts and enclose a glue dispensing groove after the main static contacts are welded with the ceramic cover; the parts of the two electric connectors, which are positioned on the upper end surface of the top wall of the ceramic cover, are coated in the insulating sleeve during injection molding, so that the lead-out part of the auxiliary static contact is insulated and isolated from the main static contact.
2. The hvdc relay with auxiliary contacts of claim 1, wherein: the two electric connectors are also bent from the top end of the ceramic cover to the outside of the side surface of the ceramic cover and the coil rack and led to the bottom end of the shell, and are exposed downwards at the bottom end of the shell to realize the electric connection with the external component from the bottom of the relay.
3. The hvdc relay with auxiliary contacts of claim 2, wherein: the projection of the connecting line between the two auxiliary fixed contacts on the horizontal plane is intersected with the projection of the connecting line between the two main fixed contacts on the horizontal plane, and the connecting line between the two auxiliary fixed contacts passes through the approximate midpoint of the connecting line between the two main fixed contacts.
4. The hvdc relay with auxiliary contacts of claim 2, wherein: the projection of the connecting line between the two auxiliary fixed contacts on the horizontal plane is vertically intersected with the projection of the connecting line between the two main fixed contacts on the horizontal plane.
5. The HVDC relay with auxiliary contacts of claim 2, 3 or 4, wherein: and a groove for increasing the creepage distance between the two main fixed contacts is also arranged at a first interval position corresponding to the two main fixed contacts on the top end surface of the top wall of the ceramic cover, and a middle cross bar in a shape like a Chinese character 'ri' of the insulating sleeve corresponds to the groove.
6. The HVDC relay with auxiliary contact of claim 5, wherein: the bottom surface of the middle transverse bar in the shape of the Chinese character 'ri' of the insulating sleeve is provided with a rib protruding downwards, the rib is in clearance fit in the groove of the ceramic cover so as to realize the coarse positioning of the insulating sleeve on the ceramic cover and increase the creepage distance between the two main static contacts.
7. The HVDC relay with auxiliary contacts of claim 2, 3 or 4, wherein: the two auxiliary static contacts are respectively positioned at two ends of a middle transverse bar in a Chinese character 'ri' shape of the insulating sleeve, two ends of the middle transverse bar in the Chinese character 'ri' shape of the insulating sleeve are respectively provided with a first through hole which enables the two auxiliary static contacts to respectively extend upwards, and one end of each of the two electric connectors is respectively matched in the corresponding first through hole of the insulating sleeve and is welded and fixed with the corresponding auxiliary static contact in a soldering mode.
8. The hvdc relay with auxiliary contacts of claim 7, wherein: the two electric connecting pieces are respectively of a strip piece type, one ends of the two electric connecting pieces are respectively provided with a second through hole, and the two auxiliary static contacts respectively penetrate through the corresponding second through holes and are welded and fixed with one end of the corresponding electric connecting piece in a soldering mode.
9. The hvdc relay with auxiliary contacts of claim 7, wherein: one end of each of the two electric connecting pieces is respectively positioned at two sides of the connecting line of the two main fixed contacts, one of the two electric connecting pieces is wrapped in one of the two main fixed contacts by one side of the connecting line of the two main fixed contacts and is bent to the position, opposite to the one main fixed contact, of the other side of the connecting line of the two main fixed contacts, and then the position is bent to the outside of the side surfaces of the ceramic cover and the coil rack; the other one of the two electric connectors extends from the other side of the connecting line of the two main fixed contacts to the position opposite to the other main fixed contact and then is bent out of the side surface of the ceramic cover and the coil rack.
10. The hvdc relay with auxiliary contacts of claim 9, wherein: the parts of the two electric connectors, which are positioned outside the side surfaces of the ceramic cover and the coil rack, are respectively coated with a first injection molding part.
11. The hvdc relay with auxiliary contacts of claim 10, wherein: and a second injection molding part is connected between the two first injection molding parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020715090.3U CN212032952U (en) | 2020-04-30 | 2020-04-30 | High-voltage direct-current relay with auxiliary contacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020715090.3U CN212032952U (en) | 2020-04-30 | 2020-04-30 | High-voltage direct-current relay with auxiliary contacts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212032952U true CN212032952U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020715090.3U Active CN212032952U (en) | 2020-04-30 | 2020-04-30 | High-voltage direct-current relay with auxiliary contacts |
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| Country | Link |
|---|---|
| CN (1) | CN212032952U (en) |
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2020
- 2020-04-30 CN CN202020715090.3U patent/CN212032952U/en active Active
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