CN111816509A - Ceramic base of high-voltage direct-current contactor and assembling method thereof - Google Patents
Ceramic base of high-voltage direct-current contactor and assembling method thereof Download PDFInfo
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- CN111816509A CN111816509A CN201910293936.0A CN201910293936A CN111816509A CN 111816509 A CN111816509 A CN 111816509A CN 201910293936 A CN201910293936 A CN 201910293936A CN 111816509 A CN111816509 A CN 111816509A
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- contact
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- base
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/023—Details concerning sealing, e.g. sealing casing with resin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a ceramic base of a high-voltage direct-current contactor and an assembling method thereof, wherein the ceramic base comprises a ceramic base cavity and a contact (6) which is connected with the ceramic base cavity in a threaded manner; the assembling method includes the steps of firstly, integrally welding the ceramic base cavity, and then, installing the contact in the ceramic base cavity. The invention realizes the adjustment of the contact head screw thread, can change the height of the contact head according to the design requirement, can completely ensure the requirement of the contact point height, and finally meets the requirement that the contact point gap is in the design range; the performance and quality consistency of the product are improved, and the reliability of the contact part for breaking high voltage and large current is ensured. The contact is prevented from being influenced by high-temperature brazing, the hardness and the strength of the contact part are ensured, the fusion welding resistance and the adhesion resistance of the contact are improved, and the reliability of the contact on-off heavy-load capacity is ensured.
Description
Technical Field
The invention relates to a ceramic base of a high-voltage direct-current contactor and an assembling method thereof.
Background
With the development of technology, aircraft parts have been developed to be multifunctional and multipurpose, and the more functions, the more devices and components, all of which increase the demand for aviation power. High voltage dc is more efficient in accomplishing these larger power supplies, so aviation contactors are being developed to high voltages. In addition, the high-voltage direct current needs fewer cables, and the optimization of the electric energy and weight ratio of the aircraft is facilitated.
Traditional high voltage direct current contactor's seal chamber is ceramic seal structure, the contact that is located ceramic seal structure cavity is fixed through the welding mode, lead to installing the contact height in ceramic seal structure intracavity unadjustable, make the contact height all have certain difference, the later stage can't change the contact height of installing in ceramic seal structure intracavity because of the contact height on the contactor body exists the difference, lead to having the clearance that does not satisfy the designing requirement between two contacts, the performance and the quality uniformity of contactor have been reduced, and lead to the switch-on of sound contact, the disconnection easily receives high voltage, the influence of heavy current.
In addition, contacts and other parts in a ceramic sealing structure cavity in the traditional high-voltage direct-current contactor are welded by brazing at the same time, and the contacts arranged in the ceramic sealing structure cavity can only be made of pure copper materials generally under the influence of brazing process characteristics. However, since the temperature for welding the ceramic and the metal such as the contact is high, generally about 800 ℃, and the time is long for several hours, and the annealing temperature of the pure copper is generally lower than 600 ℃, the high temperature environment during the brazing causes the hardness of the pure copper to be sharply reduced, and finally causes the hardness and the strength of the contact as the pure copper to be low, the wear resistance of the contact is severely reduced when the high voltage and heavy current load is cut off, the fusion welding resistance and the adhesion resistance of the contact are reduced, and the reliability and the service life performance of the whole contactor are reduced.
Disclosure of Invention
The invention aims to solve the problems of the existing ceramic sealing structure of the contactor, and one of the purposes is to provide a ceramic base of a high-voltage direct-current contactor with an adjustable contact height. The ceramic base comprises a ceramic base cavity and a contact in threaded connection with the ceramic base cavity.
The ceramic base provided by the invention realizes the connection of the contacts through threaded connection, realizes the threaded adjustment of the contacts, can change the height of the contacts according to the design requirement, can completely ensure the height requirement of the contacts, and finally meets the requirement that the contact gap is within the design range; the performance and quality consistency of the product are improved, and the reliability of high voltage and large current of the contact part is ensured.
Another objective of the present invention is to provide an assembling method for assembling the ceramic base provided by the present invention, in which the ceramic base cavity is integrally welded, and then the contact is mounted in the ceramic base cavity.
According to the assembling method, the ceramic base cavity is welded firstly, and then the contact is installed, namely the contact part is not affected by high welding temperature when the ceramic base cavity is welded, so that the contact is prevented from being affected by high-temperature welding, the strength and hardness of the contact are ensured, the abrasion of the contact during load switching is reduced, and the fusion welding resistance and the adhesion resistance of the contact are improved.
The beneficial effects of the invention include: the contact head is adjusted in a threaded manner, the height of the contact head can be changed according to design requirements, the height requirements of the contact point can be completely guaranteed, and the contact point gap is finally met within the design range; the performance and quality consistency of the product are improved, and the reliability of the contact part for breaking high voltage and large current is ensured. The contact is prevented from being influenced by high-temperature brazing, the hardness and the strength of the contact part are ensured, the fusion welding resistance and the adhesion resistance of the contact are improved, and the reliability of the contact on-off heavy-load capacity is ensured.
Drawings
FIG. 1 is a cross-sectional view of a ceramic susceptor chamber portion provided by the present invention;
FIG. 2 is a cross-sectional view of a contact provided by the present invention;
FIG. 3 is a structural view of a ceramic base formed by the assembly of the cavity portion of the ceramic base and the contacts provided by the present invention;
in the drawings: the method comprises the following steps of 1-an exhaust tube, 2-a binding post, 3-a base body, 4-a first sealing ring, 5-a second sealing ring, 6-a contact, 61-a copper matrix and 62-a silver alloy contact.
Detailed Description
The invention provides a ceramic base of a high-voltage direct-current contactor, which is used for installing a contactor body, realizes the connection of the contactor body and an external load through a binding post on the base and controls the on-off of a power supply loaded on the external load.
As shown in fig. 1 and 3, the ceramic base is a cavity structure, and includes a ceramic base cavity which is used for mounting the contactor body and is not sealed, and a contact 6 which is screwed into the ceramic base cavity, wherein the contact 6 is used for forming an on/off circuit with a contact on the contactor body so as to control the on/off of a power supply loaded on a load. The contactor body described herein is a control circuit portion of the contactor.
The ceramic base cavity comprises a base body 3, an exhaust tube 1, a binding post 2 and a first sealing ring 4; one end of the exhaust tube 1 is arranged in the base body 3, the other end of the exhaust tube is positioned outside the base body 3, and the ceramic base cavity can be subjected to air exhaust and inflation treatment through the exhaust tube 1 so as to ensure that a contactor product formed after the contactor body is arranged has higher stability; one end of the wiring terminal 2 is inserted into the base body 3 and extends into the cavity of the cavity, an external thread is arranged on the periphery of the end, so that the contact 6 is convenient to mount, and the other end of the wiring terminal is positioned outside the base body 3 and is used for connecting a load; the first sealing ring 4 is sealed at the periphery of the wiring terminal 2, the contact 6 is of a cap structure, an internal thread matched with an external thread of the wiring terminal 2 is arranged on the inner side wall of the contact 6, the contact 6 is connected to one end, located in the cavity, of the wiring terminal 2 in a threaded mode, after the contactor body is installed in the cavity, the contact 6 can be closed with the contact on the contactor body when a power supply is switched on, the power supply is arranged at one end, located outside the base body 3, of the wiring terminal 2, and the power supply can be loaded on a load after the load is connected, so that; when the power supply is cut off, the contact 6 is disconnected with the contact on the contactor body, so that the terminal 2 is positioned at the outer end of the base body 3 and has no power supply.
The number of the binding posts 2 is equal to that of the contacts on the contactor body, and each binding post 2 is provided with a contact 6, so that the number of the contacts on the binding post 2 is equal to that of the contacts on the contactor body.
In order to simplify the structure, the stud may be directly used as the post 2. The contact 6 can be any one of the existing metal contacts, and here, a copper-based silver alloy composite contact composed of a copper base 61 and a silver alloy contact 62 is adopted, and the specific structure is as shown in fig. 2, the silver alloy contact 62 is installed on the copper base 61, and at this time, in order to realize the threaded connection of the connecting column 2, the inner wall of the copper base 61 is designed as an internal thread. In addition, the contact 6 provided by the invention can be made of different materials according to design requirements and load requirements and can be selected as a contact.
In order to provide a better sealing performance of the ceramic base when the base is installed, in some embodiments, the ceramic base further includes a second sealing ring 5 disposed at the bottom of the base body 3.
The ceramic base provided by the invention can be assembled by any conventional mode, and the assembly method which can avoid the influence of high-temperature brazing on the contact, ensure the hardness and the strength of the contact part, improve the fusion welding and adhesion resistance of the contact and ensure the reliability of the breaking and heavy load capacity of the contact is adopted to assemble the ceramic base.
Specifically, the ceramic base cavity comprises a base body 3, an exhaust tube 1, a binding post 2 and a first sealing ring 4, wherein the exhaust tube 1, the binding post 2 and the first sealing ring 4 are placed in corresponding positions of the base body 3 according to the drawing shown in fig. 1 and fig. 3, and then are placed in a brazing furnace for welding to obtain the ceramic base cavity; and then the contact is installed in the cavity of the ceramic base to obtain the ceramic base with the contact.
When the contact 6 consists of the copper base body 61 and the silver alloy contact 62, the silver alloy contact 62 is firstly installed on the copper base body 61 through welding or other methods to form a copper-based composite contact, and then the copper-based composite contact is connected to the binding post 2 in a threaded fastening mode to form a ceramic base with the contact.
Wherein, the contact installed in the ceramic base cavity is a static contact.
When the ceramic base provided by the invention comprises the second sealing ring 5, the ceramic base, the exhaust tube 1, the wiring terminal 2, the base body 3 and the first sealing ring 4 are integrally welded, and then the contact is assembled.
The embodiments described above are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.
Claims (9)
1. A ceramic base of a high-voltage direct-current contactor is characterized in that: the ceramic base comprises a ceramic base cavity and a contact (6) in threaded connection with the ceramic base cavity.
2. The ceramic susceptor of claim 1, wherein: the ceramic base wall comprises a base body (3), an exhaust tube (1), a binding post (2) and a first sealing ring (4); one end of the air suction pipe (1) is installed in the base body (3), the other end of the air suction pipe is located outside the base body (3), one end of the wiring terminal (2) is inserted into the base body (3), and the other end of the wiring terminal is located outside the base body (3); the first sealing ring (4) is sealed at the periphery of the wiring terminal (2), and the contact (6) is in threaded connection with one end of the wiring terminal (2) in the base body (3).
3. The ceramic base of the hvdc contactor of claim 2, wherein: the sealing device further comprises a second sealing ring (5) arranged at the bottom of the base body (3).
4. Ceramic base of a high voltage direct current contactor according to claim 1 or 2 or 3, characterized in that: the contact (6) comprises a metal base (61) and a metal contact (62) mounted on the base (61).
5. The ceramic base of the high-voltage direct current contactor as claimed in claim 4, wherein: the metal contact (62) is a silver alloy contact.
6. A method of assembling a ceramic base of a high voltage direct current contactor according to any one of claims 1 to 5, characterized in that: the method comprises the steps of firstly, integrally welding a ceramic base cavity, and then, installing a contact in the ceramic base cavity.
7. The method for assembling a ceramic base of a high-voltage direct current contactor according to claim 6, wherein the method comprises the following steps: the ceramic base cavity comprises a base body (3), an exhaust tube (1), a binding post (2) and a first sealing ring (4),
and placing the exhaust tube (1), the wiring terminal (2) and the first sealing ring (4) at a position corresponding to the base body (3), and sealing and welding the whole body to form a ceramic base cavity.
8. The method for assembling a ceramic base of a high-voltage direct current contactor according to claim 6, wherein the method comprises the following steps: the contact is installed in the ceramic base cavity in a threaded connection mode.
9. The assembly method of claim 6 or 7 or 8, wherein: the method is characterized in that: and integrally welding the ceramic base cavity through brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293936.0A CN111816509A (en) | 2019-04-12 | 2019-04-12 | Ceramic base of high-voltage direct-current contactor and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293936.0A CN111816509A (en) | 2019-04-12 | 2019-04-12 | Ceramic base of high-voltage direct-current contactor and assembling method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111816509A true CN111816509A (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910293936.0A Pending CN111816509A (en) | 2019-04-12 | 2019-04-12 | Ceramic base of high-voltage direct-current contactor and assembling method thereof |
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| CN (1) | CN111816509A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1305586A (en) * | 1969-04-24 | 1973-02-07 | ||
| JPS60211729A (en) * | 1984-01-13 | 1985-10-24 | エイエムエフ、インコ−ポレ−テツド | Relay and method of mounting conductive lead on movable contact means of relay and device therefor |
| FR2579369A1 (en) * | 1985-03-23 | 1986-09-26 | Bbc Brown Boveri & Cie | Electromagnetically operated switch with two part terminals |
| CN103069531A (en) * | 2010-12-02 | 2013-04-24 | 富士电机株式会社 | Electromagnetic contactor, gas sealing method for electromagnetic contactor, and method for manufacturing electromagnetic contactor |
| JP2015072852A (en) * | 2013-10-04 | 2015-04-16 | パナソニックＩｐマネジメント株式会社 | Electromagnetic relay |
| CN105826131A (en) * | 2016-04-29 | 2016-08-03 | 浙江英洛华新能源科技有限公司 | High pressure direct current relay |
| CN107180730A (en) * | 2017-07-04 | 2017-09-19 | 厦门宏发电力电器有限公司 | A kind of high-temperature resistant relay and production method |
| CN109192613A (en) * | 2018-10-18 | 2019-01-11 | 贵州振华群英电器有限公司（国营第八九厂） | A kind of closed type Foundation Plate of Contactor integral structure and its processing technology |
| CN109192614A (en) * | 2018-11-08 | 2019-01-11 | 桂林航天电子有限公司 | A kind of welded type exit of sealed relay |
-
2019
- 2019-04-12 CN CN201910293936.0A patent/CN111816509A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1305586A (en) * | 1969-04-24 | 1973-02-07 | ||
| JPS60211729A (en) * | 1984-01-13 | 1985-10-24 | エイエムエフ、インコ−ポレ−テツド | Relay and method of mounting conductive lead on movable contact means of relay and device therefor |
| FR2579369A1 (en) * | 1985-03-23 | 1986-09-26 | Bbc Brown Boveri & Cie | Electromagnetically operated switch with two part terminals |
| CN103069531A (en) * | 2010-12-02 | 2013-04-24 | 富士电机株式会社 | Electromagnetic contactor, gas sealing method for electromagnetic contactor, and method for manufacturing electromagnetic contactor |
| JP2015072852A (en) * | 2013-10-04 | 2015-04-16 | パナソニックＩｐマネジメント株式会社 | Electromagnetic relay |
| CN105826131A (en) * | 2016-04-29 | 2016-08-03 | 浙江英洛华新能源科技有限公司 | High pressure direct current relay |
| CN107180730A (en) * | 2017-07-04 | 2017-09-19 | 厦门宏发电力电器有限公司 | A kind of high-temperature resistant relay and production method |
| CN109192613A (en) * | 2018-10-18 | 2019-01-11 | 贵州振华群英电器有限公司（国营第八九厂） | A kind of closed type Foundation Plate of Contactor integral structure and its processing technology |
| CN109192614A (en) * | 2018-11-08 | 2019-01-11 | 桂林航天电子有限公司 | A kind of welded type exit of sealed relay |
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Application publication date: 20201023 |
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| RJ01 | Rejection of invention patent application after publication |