CN103489700B - Low spring, low contact resistance structure of contact terminal - Google Patents
Low spring, low contact resistance structure of contact terminal Download PDFInfo
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- CN103489700B CN103489700B CN201310480886.XA CN201310480886A CN103489700B CN 103489700 B CN103489700 B CN 103489700B CN 201310480886 A CN201310480886 A CN 201310480886A CN 103489700 B CN103489700 B CN 103489700B
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Abstract
The invention discloses a kind of low spring, low contact resistance structure of contact terminal, include contact, contact is provided with contact base, reinforcement is placed with in contact seat ring, and reinforcement and contact, conducting rod is inserted in reinforcement, forms the first gap between conducting rod bottom surface and contact upper surface, forms the second gap between conducting rod step surface and reinforcement upper surface.The present invention is structurally provided with the first gap and the second gap, the width in the first gap is less than the width in the second gap, after this structure of contact terminal is subject to the closing pressure effect of circuit breaker, conducting rod and contact, contact with each other between contact the reaction force be subject to each other time, there will be relative motion between reinforcement and contact base, reinforcement is no longer stuck on contact base, can move in the width that the second gap is remaining.Constantly can consume reaction force in motion process, thus the bounce time of whole contact is shortened, reduce breaker closing spring.
Description
Technical field
The present invention relates to a kind of low spring, low contact resistance structure of contact terminal, belong to vacuum interrupter technical field.
Background technology
The structure of contact terminal of the vacuum interrupter now used at present, conducting rod welds with contact base, the welding of reinforcement two ends, in structure of contact terminal opening and closing lock process, electric current is all transmitted to contact base by conducting rod, loop resistance is all comparatively large, and in making process, structure of contact terminal easily produces rigidity spring, product spring is large, affects its break performance.
Summary of the invention
The object of the invention is to: provide a kind of low spring, low contact resistance structure of contact terminal, solve the existing structure of contact terminal used at present, loop resistance is all comparatively large, and in making process, structure of contact terminal easily produces rigidity spring, affects the problem of its break performance.
Technical scheme of the present invention: a kind of low spring, low contact resistance structure of contact terminal, include contact, contact is provided with contact base, reinforcement is placed with in contact seat ring, and reinforcement and contact, conducting rod is inserted in reinforcement, forms the first gap between conducting rod bottom surface and contact upper surface, forms the second gap between conducting rod step surface and reinforcement upper surface.
The low spring of above-mentioned one, low contact resistance structure of contact terminal, the width in described first gap is equal to or less than the width in the second gap.
The low spring of above-mentioned one, low contact resistance structure of contact terminal, described reinforcement one end contacts with contact, and the other end is stuck on the step of contact base.
Beneficial effect of the present invention: compared with existing structure, the present invention is structurally provided with the first gap and the second gap, and first the width in gap be equal to or less than the width in the second gap, reinforcement is one end and contact weld in installation process, and the other end is stuck on the step of contact base.After this structure of contact terminal is subject to the closing pressure effect of circuit breaker, conducting rod moves afterwards and contact in the first gap, meanwhile contact with each other between contact the reaction force be subject to each other time, relative motion is there will be between reinforcement and contact base, reinforcement is no longer stuck on contact base, can move in the second gap.Constantly can consume reaction force in whole motion process, thus the bounce time of whole contact is shortened, reduce breaker closing spring.When the width in the first gap is less than the width in the second gap, conducting rod move downward with contact after, still there is certain gap surplus in the second gap, this gap surplus can make reinforcement continue to move in the second gap relative to contact base, the allowing property of its structure is better, and the spring of total is less.And directly conducting rod being nested in contact base in the present invention, during making process, be subject to arc quenching system structural pressure, conducting rod directly contacts with contact, and electric current, by the direct conducting of contact-making surface of 2, not by contact base conducting, reduces loop resistance; In separating brake process, conducting rod separates with the contact-making surface of contact, and electric current flows to conducting rod by contact base, and the magnetic field produced by contact base coil is reached and controls electric arc ability, meets the requirement of break performance.After using this structure, 35KV product bounce time drops to below 3m/s by 4-6m/s, and contact resistance drops to 25u Ω by 30u Ω.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is existing structure of contact terminal schematic diagram;
Reference numeral: 1-contact, 2-contact base, 3-reinforcement, 4-conducting rod, 5-first gap, 6-second gap.
Embodiment
Embodiments of the invention: a kind of low spring, low contact resistance structure of contact terminal, as shown in Figure 1, include contact 1, contact 1 is provided with contact base 2, be placed with reinforcement 3 in contact base 2 ring, and reinforcement 3 lower surface and contact 1 upper surface weld together, conducting rod 4 is inserted in reinforcement 3, form the first gap 5 between conducting rod 4 lower surface and contact 1 upper surface, between conducting rod 4 step surface and reinforcement 3 upper surface, form the second gap 6.
In manufacturing process, the width in the first gap 5 should be equal to or less than the width in the second gap 6, be subject to when 2 width are equal in closing pressure mechanism, after conducting rod 4 contacts with contact 1, certain buffering is not had between reinforcement 3 and contact base 2, its spring is slightly large, in order to make its spring change little, the width in the first gap 5 should be arranged the width being less than the second gap 6.In setting up procedure, the width in the first gap can not be greater than the width in the second gap, avoids in making process, contact base 2 stress deformation, thus total is out of shape.
Vacuum interrupter in use, contacts with each other due to the effect of breaker closing pressure between moving contact and fixed contact during combined floodgate, is subject to the effect of interaction force thus makes produce spring between contact in contact process.As shown in Figure 2, conducting rod welds with contact base existing structure of contact terminal, and reinforcement two ends are weldingly fixed on contact and contact base respectively, and in interrupting process, the trend of electric current is all stay to contact base by conducting rod, and its loop resistance is larger; And in making process, fix welding due to reinforcement to make to be rigid contact between contact base and contact, all reaction forces are passed to contact base again after being subject to system reaction force by contact, thus make the spring of whole contact larger, and reaction force is difficult to eliminate, bounce time is long.
And the structure of contact terminal of improved of the present invention, first when conducting rod 4 is subject to the effect of the closing pressure of circuit breaker near contact 1, owing to forming the first gap 5 between the bottom surface of conducting rod 4 and the upper surface of contact 1, the second gap 6 is formed between the step surface of conducting rod 4 and the upper surface of reinforcement 3, and first the width in gap 5 be equal to or less than the width in the second gap 6, conducting rod 4 moves down in process, conducting rod 4 bottom surface can not directly at once with the Contact of contact 1 upper surface, it can contact with contact 1 upper surface after a mobile segment distance in the first gap 5 again, now because contact 1 and reinforcement 3 are welded to connect, other one end of reinforcement 3 is just stuck on contact base 2, partial reaction power passes to reinforcement 3 by contact 1, reinforcement 3 lives contact base 2 by opposing-force support, now reinforcement 3 and contact base 2 relative motion, reinforcement 3 is no longer stuck on contact base 2, can move in the second gap 6, ensure that vacuum interrupter is in making process, contact base 2 plays cushioning effect, its structure has certain allowing property, achieve and consume arc control device combined floodgate energy, reduce breaker closing spring.In separating brake process, contact base 2 by the restriction of reinforcement 3, thus keeps whole system complete, indeformable.
When the width in the first gap 5 is less than the width in the second gap 6, after conducting rod 4 moves downward and contacts with contact 1, still there is certain gap surplus in the second gap 6, this gap surplus can make reinforcement 3 continue to move in the second gap 6 relative to contact base 2, the allowing property of its structure is better, and the spring of total is less.
When this structure of contact terminal is subject to whole arc control device closing pressure effect, the Contact of conducting rod 4 bottom surface and contact 1 upper surface, electric current is by the direct conducting of this contact-making surface, not by contact base 2 conducting, now loop resistance reduces, in separating brake process, separate between conducting rod 4 bottom surface with contact 1 upper surface, electric current flows to conducting rod 4 by contact base 2, and the magnetic field produced by contact base 4 coil is reached and controls electric arc ability, meets the requirement of break performance.
Claims (3)
1. a low spring, low contact resistance structure of contact terminal, it is characterized in that: include contact (1), contact (1) is provided with contact base (2), reinforcement (3) is placed with in contact base (2) ring, and reinforcement (3) contacts with contact (1), conducting rod (4) is inserted in reinforcement (3), form the first gap (5) between conducting rod (4) bottom surface and contact (1) upper surface, between conducting rod (4) step surface and reinforcement (3) upper surface, form the second gap (6).
2. the low spring of one according to claim 1, low contact resistance structure of contact terminal, is characterized in that: the width of described first gap (5) is equal to or less than the width of the second gap (6).
3. the low spring of one according to claim 1, low contact resistance structure of contact terminal, is characterized in that: described reinforcement (3) one end contacts with contact (1), and the other end is stuck on the step of contact base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310480886.XA CN103489700B (en) | 2013-10-15 | 2013-10-15 | Low spring, low contact resistance structure of contact terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310480886.XA CN103489700B (en) | 2013-10-15 | 2013-10-15 | Low spring, low contact resistance structure of contact terminal |
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| Publication Number | Publication Date |
|---|---|
| CN103489700A CN103489700A (en) | 2014-01-01 |
| CN103489700B true CN103489700B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310480886.XA Active CN103489700B (en) | 2013-10-15 | 2013-10-15 | Low spring, low contact resistance structure of contact terminal |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915284A (en) * | 2014-04-10 | 2014-07-09 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Contact seat damping structure |
| CN109637911A (en) * | 2019-01-18 | 2019-04-16 | 宁波鹿鼎电子科技有限公司 | A kind of attachment device and method of one or two fusions moving contact of breaker and conducting rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313282Y (en) * | 1997-07-11 | 1999-04-07 | 西安高压电器研究所 | Arc-suppression chamber probe of vacuum switch |
| CN201594492U (en) * | 2010-01-28 | 2010-09-29 | 浙江新安江开关有限公司 | Vacuum switching pipe improving switch-on oscillation |
| CN202712042U (en) * | 2012-07-12 | 2013-01-30 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Means of connecting reinforcing ribs and hooks for contacts in vacuum arc-extinguishing chamber |
| CN203596315U (en) * | 2013-10-15 | 2014-05-14 | 中国振华电子集团宇光电工有限公司 | Low-bounce and low contact resistance contact structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5210816B2 (en) * | 2008-11-14 | 2013-06-12 | 株式会社東芝 | Vacuum valve |
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- 2013-10-15 CN CN201310480886.XA patent/CN103489700B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313282Y (en) * | 1997-07-11 | 1999-04-07 | 西安高压电器研究所 | Arc-suppression chamber probe of vacuum switch |
| CN201594492U (en) * | 2010-01-28 | 2010-09-29 | 浙江新安江开关有限公司 | Vacuum switching pipe improving switch-on oscillation |
| CN202712042U (en) * | 2012-07-12 | 2013-01-30 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Means of connecting reinforcing ribs and hooks for contacts in vacuum arc-extinguishing chamber |
| CN203596315U (en) * | 2013-10-15 | 2014-05-14 | 中国振华电子集团宇光电工有限公司 | Low-bounce and low contact resistance contact structure |
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| CN103489700A (en) | 2014-01-01 |
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