CN1734697B - Movable contact element - Google Patents
Movable contact element Download PDFInfo
- Publication number
- CN1734697B CN1734697B CN 200510089922 CN200510089922A CN1734697B CN 1734697 B CN1734697 B CN 1734697B CN 200510089922 CN200510089922 CN 200510089922 CN 200510089922 A CN200510089922 A CN 200510089922A CN 1734697 B CN1734697 B CN 1734697B
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- China
- Prior art keywords
- movable contact
- contact element
- pin
- circuit
- inclined plane
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005452 bending Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Contacts (AREA)
Abstract
To prevent deformation of a tip part during current limiting breakage to eliminate poor contact with a fixed contact or situation where it does not conduct current. A triangular projected part 10a incontact with a pin 8 is integrated with the movable contact 10, when the movable contact 10 occupies the position of current limiting breakage indicated by an arrow L4. The triangular projected part 10a is disposed so that it is projected on the back of the plane where a movable contact point 1a of the movable contact 10 is placed. When the circuit is opened, only one slope in contact with each other at an apex of a triangle comes together with the pin 8. At the same time force of reaction from the pin 8 is applied in the direction toward the tip of the movable contact 10 as the arrow C indicates.
Description
Technical field
The present invention is the component parts that is connected the circuit-breaker of the Inturruptor for sub-line midway of the circuit that is connected with electronic equipment with power supply or residual current circuit breaker etc., it relates to a kind of movable contact element, when bigger electric current such as short circuit current flow in this circuit, and it disconnects from solid dynamic contact element by electromagnetic repulsion force.
Background technology
Fig. 2 shows the section constitution of major part of the circuit-breaker of the movable contact element with prior art, is described.In general, the movable contact element 1 of this circuit-breaker, rotate by the switching axle 2 that is made of insulant and to be supported on freely on the casing 3, the one end is equipped with travelling contact 1a, and this travelling contact 1a is connected with the fixing fixed contact 5a of contact element 5 with state that can be movable.And, by carrying out driven for opening and closing with switching axle 2 switching mechanisms that become one 6.Wherein, casing 3 is by lid 7 and capped, thereby do not expose inner member of formation.
When the cut-out of big electric power took place, electromagnetic repulsion force worked between contact 1a, 5a, and movable contact element 1 disconnects apace.This situation is called as current limliting and disconnects.When this current limliting disconnection takes place when, as shown in Figure 3, movable contact element 1 is the center with movable contact element axle 1b, drives to movable contact element current limliting open position L2 rotation from movable contact element ON (leading to) position L1, takes place to collide and stop with the pin 8 at the back side that is provided in movable contact element 1.
As the movable contact element of this prior art, the content of being put down in writing in patent documentation 1 and 2 is for example arranged.
Patent documentation 1:(Japan Patent) special table 2003-511839 communique
Patent documentation 2:(Japan Patent) spy opens flat 5-225887 communique
; movable contact element for prior art; in current limliting disconnects; collide and situation about stopping for movable contact element 1 and pin 8; compare with the common action that becomes OFF (breaking) from ON (leading to); because rotate, so the impact of movable contact element 1 when colliding with pin 8 also becomes big with quite powerful power.Therefore, shown in Fig. 3 arrow A, with the straight line of the length direction of slender rod shaped movable contact element 1 substantially on the direction of quadrature, be applied with the very big reaction force of self-marketing 8.Therefore, as shown in the round frame of Fig. 4 like that, movable contact element 1T sometimes from the position of pin 8 to the rotation direction bending.Fig. 5 shows the state of fore-end before and after distortion of this movable contact element 1.
Fore-end at movable contact element 1 has taken place under the crooked situation like this, when this movable contact element 1T is arranged in ON (leading to) position shown in the L3 of Fig. 4, has following problems.That is, because movable contact element 1T along the direction of leaving fixing contact element 5 and bending so when this bending was big, movable contact element 1a can not contact with fixed contact 5a, so can not form the ON state.
In addition, also might cause the increase etc. of contact resistance because the bump (wipe) the during ON of movable contact element 1T reduces and the contact of contact changes.If these phenomenons are very obvious, then might be shown in Fig. 4 arrow B bump not like that fully, because of the loose contact of contact 1a, 5a can not form conducting.That is, when movable contact element 1 carries out ON when action, can produce loose contact or form the state of last conducting.
Summary of the invention
The present invention makes in view of such problem, and its purpose is to provide a kind of movable contact element, and the distortion of the fore-end when it disconnects by preventing current limliting is eliminated and fixedly loose contact between the contact element and last conducting state.
In order to achieve the above object, movable contact element according to first aspect present invention is characterised in that: be a kind of slender rod shaped movable contact element, use with the circuit-breaker that midway is connected of circuit on, when short circuit current flow in this circuit, disconnect from fixing contact element by electromagnetic repulsion force, when this disconnects, with respect to the fixedly back side and the pin contacts of the contact-making surface of contact element, wherein, be provided with protuberance with inclined plane at the described back side, this inclined plane becomes contact condition with described pin collision when becoming described off-state.
According to this formation, because when the current limliting of rotating movable contact element with bigger power disconnects, have only the inclined-plane and the pin of the protuberance of movable contact element to collide, so the reaction force of accepting when this collision that comes self-marketing works along the movable contact element length direction.Therefore, there is not as prior art so-called movable contact element to apply big reaction force colliding with pin on the direction of quadrature substantially from this pin with the straight line of this length direction.Therefore, when current limliting disconnects,, there is not the situation of movable contact element bending even movable contact element collides with bigger power and pin yet.
Movable contact element according to second aspect present invention is characterised in that: in first aspect, the inclined plane of described protuberance forms, and when the collision carried out to described pin, the reaction force that is subjected to from this pin joint advances towards the preceding extreme direction of this movable contact element.
According to this formation, when current limliting disconnects, when colliding with pin, have only the inclined plane of this protuberance accept the reaction force of self-marketing and before the movable contact element extreme direction, be that length direction works, so there is not the such power that makes the movable contact element bending of prior art.
The invention effect: as above-mentioned illustrated, have following effect in the present invention, that is, the distortion of the fore-end when preventing that current limliting from disconnecting, and can eliminating and fixedly loose contact between the contact element and last conducting state.
Description of drawings
Fig. 1 is used to illustrate the formation of movable contact element of circuit-breaker of embodiment of the present invention and the sectional view of action.
Fig. 2 is the section constitution figure with major part of available circuit circuit breaker.
Fig. 3 is when the current limliting of existing movable contact element disconnects, the schematic diagram of the reaction force that produces because of the impulsive force towards pin.
Fig. 4 is when the current limliting of existing movable contact element disconnects, and becomes the schematic diagram of case of bending because of the impulsive force towards pin makes the fore-end of movable contact element.
Fig. 5 is the schematic diagram of front and back state of the front end bending of existing movable contact element.
Symbol description:
1,10 movable contact elements, the 1a travelling contact, 1b movable contact element axle, 1T is out of shape movable contact element, and 2 open and close axle, 3 casings, 5 fixing contact elements, the 5a fixed contact, 6 switching mechanisms, 7 lids, 8 sell 10a triangle protuberance.
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.Wherein, in whole accompanying drawings of this specification, the part mark prosign in correspondence with each other in time omits explanation to repeating part in aftermentioned.
(execution mode)
Fig. 1 is used to illustrate the formation of movable contact element of circuit-breaker of embodiment of the present invention and the sectional view of action.
The difference of the movable contact element 1 of the prior art of movable contact element shown in Figure 1 10 and Fig. 2～shown in Figure 5 is: be provided with triangle protuberance 10a on movable contact element 10 integratedly, when movable contact element 10 was positioned at current limliting open position shown in the arrow L4, it contacted with pin 8.
For this triangle protuberance 10a, the back side at the face that sets of the travelling contact 1a of movable contact element 10 is configured in outstanding mode triangular in shape, it is to form like this, promptly, when disconnecting, have only a side's who engages with its leg-of-mutton corner inclined plane and pin 8 to collide, when this collides, such as shown by arrow C from the reaction force that pin 8 is accepted, act on towards the preceding extreme direction of movable contact element 10.
Because this reaction force acts is at the length direction of slender rod shaped movable contact element 10, so there is not the such power that makes movable contact element 10 bendings of prior art.Therefore, even when current limliting disconnects, under the state of movable contact element 10 powerful ground and pin 8 collisions, movable contact element 10 can not bend yet.
Therefore, be arranged in when movable contact element 10 under the situation of ON (leading to) position shown in the L5 of Fig. 1,, form the ON state so this travelling contact 1a can contact suitably with fixed contact 5a because there is not the bending of movable contact element 1T.
According to the movable contact element 10 of such present embodiment, because the fore-end distortion can prevent that current limliting from disconnecting the time, so can eliminate and fixedly loose contact between the contact element and last conducting state.
In addition, be provided with the formation of triangle protuberance 10a for movable contact element 10, if movable contact element 10 is crooked because of collision, then as shown in Figure 1, when triangle protuberance 10a and pin 8 collisions, opened and closed axle 2 states that supported because the root of movable contact element 10 becomes, thus movable contact element 10 with this support section as fulcrum, bend towards the fixing direction of contact element 5.
In this case, because travelling contact 1a is towards the direction bending of fixed contact 5a, so therefore the consumption by each contact 1a, 5a be favourable for the loose contact that the face of both sides' contact 1a, 5a does not become the such situation of complete contact condition.
Claims (2)
1. slender rod shaped movable contact element, use is being connected on the circuit-breaker midway of circuit, when short circuit current flow in this circuit, described movable contact element is by electromagnetic repulsion force and from fixedly contact element disconnection, when this disconnects, described movable contact element with respect to the fixedly back side and the pin contacts of the contact-making surface of contact element, it is characterized in that:
Be provided with the protuberance with inclined plane at the described back side, when becoming described off-state, described inclined plane and described pin collide and become contact condition.
2. movable contact element as claimed in claim 1 is characterized in that:
The inclined plane of described protuberance forms, and when the collision carried out to described pin, the reaction force that is subjected to from this pin joint transmits towards the preceding extreme direction of this movable contact element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-228479 | 2004-08-04 | ||
| JP2004228479 | 2004-08-04 | ||
| JP2004228479A JP2006049091A (en) | 2004-08-04 | 2004-08-04 | Movable contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1734697A CN1734697A (en) | 2006-02-15 |
| CN1734697B true CN1734697B (en) | 2010-06-16 |
Family
ID=36027401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510089922 Expired - Fee Related CN1734697B (en) | 2004-08-04 | 2005-08-04 | Movable contact element |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006049091A (en) |
| CN (1) | CN1734697B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466140C (en) * | 2007-01-01 | 2009-03-04 | 常熟开关制造有限公司(原常熟开关厂） | Contact system of breaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5008504A (en) * | 1989-01-06 | 1991-04-16 | Fuji Electric Co., Ltd. | Switching mechanism in circuit breaker |
| US5534832A (en) * | 1993-03-25 | 1996-07-09 | Telemecanique | Switch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183660U (en) * | 1974-12-26 | 1976-07-05 | ||
| JP2864721B2 (en) * | 1990-11-08 | 1999-03-08 | 富士電機株式会社 | Circuit breaker |
| JPH07302534A (en) * | 1994-05-10 | 1995-11-14 | Fuji Electric Co Ltd | Opening and closing mechanism of circuit breaker |
-
2004
- 2004-08-04 JP JP2004228479A patent/JP2006049091A/en active Pending
-
2005
- 2005-08-04 CN CN 200510089922 patent/CN1734697B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5008504A (en) * | 1989-01-06 | 1991-04-16 | Fuji Electric Co., Ltd. | Switching mechanism in circuit breaker |
| US5534832A (en) * | 1993-03-25 | 1996-07-09 | Telemecanique | Switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006049091A (en) | 2006-02-16 |
| CN1734697A (en) | 2006-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: FUJI ELECTRIC ASSETS MANAGEMENT CO., LTD. Free format text: FORMER OWNER: FUJI ELECTRIC MACHINE SYSTEM CO., LTD. Effective date: 20090515 Owner name: FUJI ELECTRIC MACHINE SYSTEM CO., LTD. Free format text: FORMER OWNER: FUJI ELECTRIC ASSETS MANAGEMENT CO., LTD. Effective date: 20090515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090515 Address after: Tokyo, Japan Applicant after: Fuji electric Asset Management Co. Address before: Tokyo, Japan Applicant before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Effective date of registration: 20090515 Address after: Tokyo, Japan Applicant after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo, Japan Applicant before: Fuji electric Asset Management Co. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20150804 |
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| EXPY | Termination of patent right or utility model |