CN1819095A - Dynamic contact locker and circuit breaker therewith - Google Patents
Dynamic contact locker and circuit breaker therewith Download PDFInfo
- Publication number
- CN1819095A CN1819095A CN 200610023724 CN200610023724A CN1819095A CN 1819095 A CN1819095 A CN 1819095A CN 200610023724 CN200610023724 CN 200610023724 CN 200610023724 A CN200610023724 A CN 200610023724A CN 1819095 A CN1819095 A CN 1819095A
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- moving contact
- contact
- circuit breaker
- rotation
- touch spring
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Abstract
The invention includes a rotator, a moving contact, a contact spring, a first spindle and a second spindle. There are flute and protruding part on the moving contact. When the moving contact rotates, the protruding part will be blocked at curtain position by the first spindle suffering the spring tension of contact spring. Due to high repulsion produced by the moving contact, the moving contact is not blocked by the first spindle and continues to rotate, and stops at the rotation stop position. Meanwhile the first spindle suffering the spring tension of contact spring slides into the flute on the moving contact and is fixed.
Description
Technical field
The present invention relates to field of circuit breakers, more particularly, the circuit breaker that relates to the moving contact locking device in the circuit breaker and adopt this device.
Background technology
The double break point form of breaker of plastic casing is the developing direction of current breaker of plastic casing product, when big electric current passes through this kind circuit breaker, be subjected to the influence of electrodynamic repulsion force can produce the huge rotation moving contact of trying hard to recommend moving double break point, thereby open circuit, but because the operate time of mechanism is later, make the moving contact of scolding out under the pulling force of touch spring, may produce for the second time closed or since shake produce repeatedly closed, very unfavorable to disjunction.The new type of locking device of this breaker of plastic casing rotating dual-breakpoint rotor that designs in order to solve this issuable repeatedly closed problem can address this problem fully, relies on the certain structure form temporarily fixedly to make it no longer return to closed situation the moving contact of opening.
Summary of the invention
The purpose of this invention is to provide a kind of temporarily fixing moving contact locking device of closure state and circuit breaker that adopts this device of no longer returning to of the moving contact of opening that make.
According to an aspect of the present invention, a kind of moving contact locking device is provided, comprise rotor, moving contact, touch spring, first and second, wherein, have groove and bossing on the described moving contact, in the rotary course of moving contact, bossing can be run into two first stop that are subjected to the touch spring pulling force when moving contact rotates to certain position, because the repulsion that the moving contact rotation produces is very big, make the moving contact of stressed rotation not be subjected to first stop to continue rotation, finally arrive the rotation stop position of moving contact; At this moment, thus describedly slided in the groove on the described moving contact by first of touch spring pulling force moving contact is blocked.
According to one embodiment of the invention, have two grooves and two bossings on the described moving contact, the center symmetry of described two relative moving contacts of groove, two bossings are the center symmetry of moving contact relatively also.
According to one embodiment of the invention, it is characterized in that the rotation stop position of described moving contact is by inner chamber or two second decisions of contact arc-extinguishing chamber integral module.
According to one embodiment of the invention, described first with described second between link to each other by described touch spring.
According to a second aspect of the invention, a kind of circuit breaker is provided, comprise circuit breaker basic structure, described circuit breaker also comprises the moving contact locking device, described moving contact locking device comprises rotor, moving contact, touch spring, first and second, wherein, have groove and bossing on the described moving contact, in the rotary course of moving contact, bossing can be run into two first stop that are subjected to the touch spring pulling force when moving contact rotates to certain position, because the repulsion that the moving contact rotation produces is very big, make the moving contact of stressed rotation not be subjected to first stop to continue rotation, finally arrive the rotation stop position of moving contact; At this moment, thus describedly slided in the groove on the described moving contact by first of touch spring pulling force moving contact is blocked.
According to one embodiment of the invention, have two grooves and two bossings on the described moving contact, the center symmetry of described two relative moving contacts of groove, two bossings are the center symmetry of moving contact relatively also.
According to one embodiment of the invention, the rotation stop position of described moving contact is by inner chamber or two second decisions of contact arc-extinguishing chamber integral module.
According to one embodiment of the invention, described first with described second between link to each other by described touch spring.
Adopt technical scheme of the present invention, this kind moving contact locking device is subjected to once more or the repeatedly problem of closure of double break point moving contact that electric power scolds out in the time of can effectively solving in the novel breaker of plastic casing big electric current.
Description of drawings
It is more obvious that above-mentioned feature, character and advantage with other of the present invention will be below becomes after in conjunction with the accompanying drawings and embodiments the description, and identical in the accompanying drawings mark is represented identical feature, wherein:
Fig. 1 is according to one embodiment of the invention, and the moving contact of employing contact locking device is installed in the schematic diagram of the inside of single-phase contact arc-extinguishing chamber integral module;
Fig. 2 is according to one embodiment of the invention, the decomposition chart of contact locking device;
Fig. 3 is according to one embodiment of the invention, the schematic diagram of the locked position of contact locking device.
Embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
At first, the invention provides a kind of moving contact locking device, comprise rotor, moving contact, touch spring, first and second, wherein, have groove and bossing on the described moving contact, in the rotary course of moving contact, bossing can be run into two first stop that are subjected to the touch spring pulling force when moving contact rotates to certain position, because the repulsion that the moving contact rotation produces is very big, make the moving contact of stressed rotation not be subjected to first stop to continue rotation, finally arrive the rotation stop position of moving contact; At this moment, thus describedly slided in the groove on the described moving contact by first of touch spring pulling force moving contact is blocked.
In order to make moving contact have better balance quality, according to one embodiment of the invention, have two grooves and two bossings on the described moving contact, the center symmetry of described two relative moving contacts of groove, two bossings are the center symmetry of moving contact relatively also.The rotation stop position of moving contact is by inner chamber or two second decisions of contact arc-extinguishing chamber integral module.Generally, described first with described second between link to each other by described touch spring.
The present invention also provides according to a kind of circuit breaker, comprise circuit breaker basic structure, described circuit breaker also comprises the moving contact locking device, described moving contact locking device comprises rotor, moving contact, touch spring, first and second, wherein, have groove and bossing on the described moving contact, in the rotary course of moving contact, bossing can be run into two first stop that are subjected to the touch spring pulling force when moving contact rotates to certain position, because the repulsion that the moving contact rotation produces is very big, make the moving contact of stressed rotation not be subjected to first stop to continue rotation, finally arrive the rotation stop position of moving contact; At this moment, thus describedly slided in the groove on the described moving contact by first of touch spring pulling force moving contact is blocked.
Equally, in order to make moving contact have better balance quality, have two grooves and two bossings on the moving contact of the circuit breaker of one embodiment of the invention, the center symmetry of described two relative moving contacts of groove, two bossings are the center symmetry of moving contact relatively also.The rotation stop position of moving contact is by inner chamber or two second decisions of contact arc-extinguishing chamber integral module.Generally, described first with described second between link to each other by described touch spring.
Fig. 1 to Fig. 3 shows the structure chart according to the moving contact locking device of one embodiment of the invention, because the miscellaneous part in the circuit breaker of the present invention is with of the prior art identical, therefore the embodiment of circuit breaker is described no longer specially, the embodiment of circuit breaker and the embodiment of moving contact locking device are described in the lump.
With reference to figure 1 and Fig. 2, the invention provides a kind of moving contact locking device that is used for circuit breaker, be installed on the contact 100 of the inside that is positioned at single-phase contact arc-extinguishing chamber 107 integral modules, lower link 101 interlocks of contact and operating mechanism realize the function of separating brake and combined floodgate.Its motion is to be controlled by the motion of operating mechanism.Its motion mode is the fixed center rotation, and center of rotation is determined by a linkage.
Embodiment according to Figure 1 and Figure 2, the operation principle of this kind moving contact locking device is as follows: when manual operation (comprise rotary handle operation and electric operating), rotor 102 in the contact 100 is subjected to 101 controls of operating mechanism lower link to make separating brake (in this embodiment for clockwise) and (the being counterclockwise in this embodiment) direction of closing a floodgate is rotated, there is not near relative displacement (in the low-angle a small amount of relative displacement being arranged the closing position, i.e. the excess of stroke) between moving contact 104 and the rotor case 103.
When circuit breaker was in gate-dividing state, moving contact 104 was in the position of maximum far from two fixed contacts 106, made dynamic/static contact keep the necessary distance of opening, at this moment, promptly the inner chamber 108 of moving contact 104 and single-phase contact arc-extinguishing chamber 107 integral modules near.At this moment, the moving contact 104 of contact 100 is in the state of being close to the rotor case 103 of contact 100, and both do not have relative displacement.
When circuit breaker is in "on" position, because contact 100 is under operating mechanism drives, contact 100 produces the necessary excess of stroke with respect to the fixed contact 106 of two symmetries, this excess of stroke stretches the touch spring 110 in the contact 100, make between dynamic/static contact 104,106 contact pressures that produce a certain size, the contact that guarantees dynamic/static contact is reliable, prevents that steady liter is too high.At this moment, the moving contact 104 of contact 100 is in the state that separates slightly with the rotor case 103 of contact 100, and both have certain relative displacement.Pass to a certain amount of electric current under the normal condition, when size of current was higher than the current overload rating electric current that sets of circuit breaker, when promptly overload situations took place, a release can move and drive the operating mechanism action, contact 100 is subjected to lower link 101 tractions of operating mechanism, rotates an angle in the direction of the clock.The moving contact 104 of contact 100 returns to the state of being close to the rotor case 103 of contact 100 at this moment, and both do not have relative displacement.
Under the overload situations, owing to the big electrodynamic action that does not have greater than touch spring 110 pulling force, the moving contact locking device of this kind circuit breaker is inoperative.
When circuit breaker is in when having the electric current that surpasses default rated short circuit current to pass through under the "on" position, work as the moving contact 104 of contact 100 and the contact pressure that the electrodynamic repulsion force between two fixed contacts, 106 conductors produces greater than touch spring 110 this moment, the lower moving contact 104 that influences of the big electrodynamic repulsion force that produces at big electric current is done rotation counterclockwise rapidly, produces relative motion fast between the rotor case 103 of contact 100 and the moving contact 104 of contact 100.And its action under machine driving and frictional force influence of moving tripping mechanism of wink lags behind the speed of scolding out of moving contact 104, can't in time drive the operating mechanism dropout and make its driven rotary contact 100 be rotated counterclockwise separation dynamic/static contact 104 and 106 (rotor case 103 of contact 100 is not moved by 101 effects of operating mechanism lower link).If the moving contact 104 after neither one mechanism will separate is fastening, influenced by the pulling force of the touch spring 110 of contact 100, under the not too fast situation of operating mechanism responsiveness, moving contact 104 may can return to the make position with fixed contact 106 again, cause twice or twice above repeatedly contact generation, this situation does not allow and must avoid.So, continuation is with reference to figure 1 and Fig. 2, the present invention uses moving contact locking device 200 to prevent the generation of this situation, according to embodiment illustrated in figures 1 and 2, last fluted 202 and bossing 204 of moving contact 104 in this embodiment, have two grooves 202 and two bossings 204 on the moving contact 104, the center symmetry of two groove 202 relative moving contacts, two bossings 204 be the center symmetry of moving contact relatively also.Bossing 204 can be run into stopping of two first 206 of being subjected to touch spring 110 pulling force when moving contact 104 is subjected to electric power to rotate to certain position, because electrodynamic repulsion force is very big, make the moving contact 104 of stressed rotation not be subjected to two first 206 stop to continue rotation, final because the inner chamber 108 of contact arc-extinguishing chamber 107 integral modules or stop that two second 208 of its rotation stop stops, thereby and two first 206 of being subjected to touch spring 110 pulling force slided into and in the groove 202 on the moving contact 100 moving contact 104 blocked, and makes the moving contact 104 temporarily can't resile.Thereby guarantee to have avoided twice or twice above repeatedly contact of dynamic/static contact.After operating mechanism begins action, contact 100 begins rotation, owing to stopping of the inner chamber 108 that is subjected to single-phase contact arc-extinguishing chamber 107 integral modules, the moving contact 104 of contact 100 has broken away from two first 202 of gripping mechanism, the state that the moving contact 104 that returns to contact 100 under touch spring 110 effect of contact 100 and the rotor case 103 of contact 100 are close to, i.e. state separating brake the time.Shown in Figure 2 is adopts the exploded view of contact 100 of the circuit breaker of moving contact locking device of the present invention, the baffle plate of label 112 expression contacts wherein.
Shown in Figure 3 is when closing a floodgate, under the effect of moving contact locking device of the present invention, and the schematic diagram of locking moving contact position.
In addition, according to embodiments of the invention, for contact global facility is installed,, install with convenient in the hole 105 that the center of rotation of rotor 102 and moving contact 104 has been opened same size, because touch spring is equipped with successively in the installation process, spring force produces makes a concerted effort and resultant moment can't balance, and very big, the increase installation difficulty, 105 places are temporary transient in the hole inserts one first with rotor and the unification of movable contact head pivot point, has greatly made things convenient for the installation of spring.Need explanation herein, in structure shown in the present, the quantity of touch spring can have a plurality of, and is general, adopts one or two touch springs to link to each other between a pair of first and second, and certainly, the touch spring of other quantity also is operable.
The foregoing description provides to being familiar with the person in the art and realizes or use of the present invention; those skilled in the art can be under the situation that does not break away from inventive concept; the foregoing description is made various modifications and variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claim mentions.
Claims (8)
1. moving contact locking device, it is characterized in that, comprise rotor, moving contact, touch spring, first and second, wherein, have groove and bossing on the described moving contact, in the rotary course of moving contact, bossing can be run into two first stop that are subjected to the touch spring pulling force when moving contact rotates to certain position, because the repulsion that the moving contact rotation produces is very big, make the moving contact of stressed rotation not be subjected to first stop to continue rotation, finally arrive the rotation stop position of moving contact; At this moment, thus describedly slided in the groove on the described moving contact by first of touch spring pulling force moving contact is blocked.
2. moving contact locking device as claimed in claim 1 is characterized in that, has two grooves and two bossings on the described moving contact, the center symmetry of described two relative moving contacts of groove, and two bossings are the center symmetry of moving contact relatively also.
3. moving contact locking device as claimed in claim 1 is characterized in that, the rotation stop position of described moving contact is by inner chamber or two second decisions of contact arc-extinguishing chamber integral module.
4. moving contact locking device as claimed in claim 1 is characterized in that, described first with described second between link to each other by described touch spring.
5. circuit breaker, comprise circuit breaker basic structure, it is characterized in that, described circuit breaker also comprises the moving contact locking device, described moving contact locking device comprises rotor, moving contact, touch spring, first and second, wherein, have groove and bossing on the described moving contact, in the rotary course of moving contact, bossing can be run into two first stop that are subjected to the touch spring pulling force when moving contact rotates to certain position, because the repulsion that the moving contact rotation produces is very big, make the moving contact of stressed rotation not be subjected to first stop to continue rotation, finally arrive the rotation stop position of moving contact; At this moment, thus describedly slided in the groove on the described moving contact by first of touch spring pulling force moving contact is blocked.
6. circuit breaker as claimed in claim 5 is characterized in that, has two grooves and two bossings on the described moving contact, the center symmetry of described two relative moving contacts of groove, and two bossings are the center symmetry of moving contact relatively also.
7. circuit breaker as claimed in claim 5 is characterized in that, the rotation stop position of described moving contact is by inner chamber or two second decisions of contact arc-extinguishing chamber integral module.
8. circuit breaker as claimed in claim 5 is characterized in that, described first with described second between link to each other by described touch spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610023724 CN1819095A (en) | 2006-01-27 | 2006-01-27 | Dynamic contact locker and circuit breaker therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610023724 CN1819095A (en) | 2006-01-27 | 2006-01-27 | Dynamic contact locker and circuit breaker therewith |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1819095A true CN1819095A (en) | 2006-08-16 |
Family
ID=36919029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610023724 Pending CN1819095A (en) | 2006-01-27 | 2006-01-27 | Dynamic contact locker and circuit breaker therewith |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1819095A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707170A (en) * | 2008-08-20 | 2010-05-12 | 西门子公司 | Circuit breaker, in particular for low voltages |
| CN101114556B (en) * | 2007-04-29 | 2010-06-09 | 上海电科电器科技有限公司 | Circuit breaker rotating dual-breakpoint contact system and spring protection structure |
| CN102403172A (en) * | 2011-11-21 | 2012-04-04 | 科都电气有限公司 | Double breakpoint moving contact system and molded case circuit breaker using same |
| CN101692415B (en) * | 2009-05-11 | 2012-05-02 | 江苏辉能电气有限公司 | Revolving double breakpoints structure of low-voltage circuit breaker contact |
| WO2012083829A1 (en) * | 2010-12-19 | 2012-06-28 | 浙江达达电器有限公司 | Contact system for circuit breaker |
| CN102768921A (en) * | 2011-05-03 | 2012-11-07 | 西门子公司 | Repelling disconnection mechanism of breaker and breaker thereof |
| CN104465254A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Rotary double-breakpoint contact |
-
2006
- 2006-01-27 CN CN 200610023724 patent/CN1819095A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114556B (en) * | 2007-04-29 | 2010-06-09 | 上海电科电器科技有限公司 | Circuit breaker rotating dual-breakpoint contact system and spring protection structure |
| CN101707170A (en) * | 2008-08-20 | 2010-05-12 | 西门子公司 | Circuit breaker, in particular for low voltages |
| CN101707170B (en) * | 2008-08-20 | 2013-11-20 | 西门子公司 | Circuit breaker, in particular for low voltages |
| CN101692415B (en) * | 2009-05-11 | 2012-05-02 | 江苏辉能电气有限公司 | Revolving double breakpoints structure of low-voltage circuit breaker contact |
| WO2012083829A1 (en) * | 2010-12-19 | 2012-06-28 | 浙江达达电器有限公司 | Contact system for circuit breaker |
| CN102768921A (en) * | 2011-05-03 | 2012-11-07 | 西门子公司 | Repelling disconnection mechanism of breaker and breaker thereof |
| CN102403172A (en) * | 2011-11-21 | 2012-04-04 | 科都电气有限公司 | Double breakpoint moving contact system and molded case circuit breaker using same |
| CN102403172B (en) * | 2011-11-21 | 2014-06-25 | 科都电气有限公司 | Double breakpoint moving contact system and molded case circuit breaker using same |
| CN104465254A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Rotary double-breakpoint contact |
| WO2015043423A1 (en) * | 2013-09-24 | 2015-04-02 | 上海电科电器科技有限公司 | Rotating dual break point contact |
| US9837233B2 (en) | 2013-09-24 | 2017-12-05 | Seari Electric Technology Co., Ltd. | Rotating dual break point contact |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |