CN100421200C - Operation mechanism of mini-type residual current actuated breaker - Google Patents
Operation mechanism of mini-type residual current actuated breaker Download PDFInfo
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- CN100421200C CN100421200C CNB2006100495423A CN200610049542A CN100421200C CN 100421200 C CN100421200 C CN 100421200C CN B2006100495423 A CNB2006100495423 A CN B2006100495423A CN 200610049542 A CN200610049542 A CN 200610049542A CN 100421200 C CN100421200 C CN 100421200C
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Abstract
The present invention discloses an operation mechanism of a minitype residual current actuated breaker. The present invention comprises a static contact, a moving contact, and a driving mechanism of the moving contact, wherein the driving mechanism comprises a four connecting rod mechanism, a tripping device, a first force arm and a push rod of a second force arm, wherein the four connecting rod mechanism is composed of an operating handle, a first driving connecting rod, a rock arm, a second driving connecting rod and a supporting piece, the tripping device is composed of a fastener, a jumping buckle, a first return spring and a second return spring, the first force arm is controlled by a striker of a fault tripping relay, the push rod of the second force arm is matched with the fastener and used for unfastening, and the length of the push rod is shorter than that of the first force arm. When the structure is adopted, the breaking of the mechanism is realized wherever the handle is positioned after a fault tripping device is actuated when the handle is used for carrying out a closing operation, and thus, the return of the moving and the static contacts to the initial positions of the off state is realized; the reliability and the safety for use of a residual current breaker are enhanced effectively.
Description
Technical field
The present invention relates to a kind of low-voltage electrical apparatus, a kind of operating mechanism of mini-type residual current actuated breaker specifically, this mechanism can under normal circumstances make mechanism's closed and disconnected by driving operating grip; In the loop occurring during residual current, the action of fault release promotes snap close and mechanism is threaded off realize the effect of protection.This operating mechanism provides the residual current acting indicating device simultaneously, and when carrying out closure, opening operation under the normal condition, changing can not appear in indicating device; When because when residual current occurring mechanism thread off being disconnected, the indicating device action realizes fault indication function.
Background information
The operating mechanism of existing residual current action breaker, as Chinese patent CN8803427, the tripping force of the operating mechanism of this structure is bigger than normal, can't realize handle when carrying out closed procedure, if handle all can make mechanism disconnect the initial position that the realization dynamic/static contact is returned to off-state after being in the fault release action of any position.This mechanism has solved this defective effectively, makes residual current action breaker more safe and reliable.
Summary of the invention
What the present invention will solve is the above-mentioned defective that prior art exists, and aims to provide a kind of operating mechanism of residual current action breaker, improves the reliability of residual current circuit breaker and the fail safe of use.The technical scheme that addresses the above problem employing is:
A kind of operating mechanism of mini-type residual current actuated breaker, be equipped with 1 pair or many in the shell to fixed contact and moving contact, described moving contact is arranged in the rotating shaft by a strutting piece, described rotating shaft is driven by the mechanism between make position and open position, it is characterized in that described mechanism comprises:
A support and a dividing plate;
By a manual operation handle and one first toggle that kinematic link is connected to form, described handle is contained on the cylindrical shape boss of described support, can rotate around cylindrical boss;
Rocking arm with 2 circular holes, wherein 1 hole is connected with operating grip by first kinematic link, and 1 hole connects to form quadric chain by second kinematic link and strutting piece in addition;
A trip gear of being made up of snap close, tripping, first returning spring and second returning spring is installed between support and the dividing plate; The cylindrical shape boss of described rocking arm is hinged in first circular hole of tripping;
A push rod that is hinged between support and the dividing plate, described push rod have and are controlled by fault and take off first arm of force of striker of mouthful relay and one and match with described snap close and merge second arm of force that is used for release; And the length of described first arm of force is greater than the length of described second arm of force; The afterbody of described push rod matches with described moving contact strutting piece;
The cylindrical boss of the both sides of described rotating shaft is installed in respectively between shell and the dividing plate, because the effect of touch spring pressure, rotating shaft can be carried out relatively rotating by a small margin at the circular hole on shell and dividing plate.
The operating mechanism of mini-type residual current actuated breaker of the present invention, when the residue fault current occurring in the loop, fault is taken off the arm of force that the striker of mouthful relay promotes above the push rod and is rotated, and then promotes the moving contact strutting piece and make dynamic/static contact separately.Simultaneously, snap close and tripping release, quadric chain is disintegrated, and the uncontrollable mechanism action of handle guarantees that handle is in any position mechanism is disconnected.And tripping resets after the active force of second back-moving spring is turning to certain angle, and with the snap close overlap joint that resets under first action of reset spring, the striker that rotation of drive push rod and promotion fault are taken off mouthful relay resets, for prepare next time again.Because the length of described first arm of force utilizes lever principle can effectively reduce the tripping force of mechanism greater than the length of described second arm of force.
As a further improvement on the present invention, described rocking arm and tripping are installed in the both sides of support respectively, on the described rocking arm cylindrical boss pass on the support one section arc-shaped hole offering then with tripping on first circular hole hinged.Described tripping is hinged on the home position of arc-shaped hole of support.Second arm of force of described push rod and snap close contact position are a triangle boss.Described push rod afterbody is that semi-circular shape passes through end wave-like part and is connected with main body.Second returning spring of described trip gear is a torsion spring, and wherein a side is hooked on the support, and opposite side is processed to the right angle, and the afterbody extension is inserted in second circular hole of tripping.
Further improve again as of the present invention, also be provided with a fault dropout indication piece between described support and the dividing plate, described indication piece is by drive link and described tripping interlock, and forms fault dropout indicating device with the retainer and the returning spring that are installed on the dividing plate.The arch section overlap joint that the top of described tripping has on a semicircle boss and the drive link carries out transmission.The circular hole in the centre position of described drive link is hinged on the cylindrical boss on the support.The outside and the semi-circular portion on the retainer of described drive link are carried out transmission.
Description of drawings
Do and describe in further detail inventing first content below in conjunction with drawings and Examples.
Schematic diagram when this operating mechanism of Fig. 1 is in off-state.
Internal structure schematic diagram (front view) when this operating mechanism of Fig. 2 is in off-state
Internal structure schematic diagram (rearview) when this operating mechanism of Fig. 3 is in off-state.
This operating mechanism of Fig. 4 is in the internal structure schematic diagram when closure state.
This operating mechanism of Fig. 5 is in the internal structure schematic diagram when trip status.
The hinged schematic diagram of rocking arm and tripping is planted by this mechanism of Fig. 6.
The structural representation of push rod in this mechanism of Fig. 7.
Embodiment
With reference to accompanying drawing, the operating mechanism of mini-type residual current actuated breaker, be equipped with 1 pair or many in the shell to fixed contact 2 and moving contact 3, described moving contact 3 is arranged in the rotating shaft 4 by a strutting piece 23, support, described rotating shaft 4 is driven by the mechanism between make position and open position, and described mechanism comprises:
A support 9 and a dividing plate 11;
By a manual operation handle 7 and the toggle that " U " shape first kinematic link 6 is connected to form, described handle 7 is contained on the cylindrical shape boss of described support 9, can rotate around cylindrical boss;
Rocking arm 8 with 2 circular holes, wherein 1 hole is connected with operating grip 7 by first kinematic link 6, and 1 hole connects to form quadric chain by " U " shape second kinematic link 5 with strutting piece 23 in addition;
A trip gear of being made up of snap close 16, tripping 17, first returning spring 18 and second returning spring 19 is installed between support 9 and the dividing plate 11; The cylindrical shape boss 21 of described rocking arm 8 is hinged in first circular hole 22 of tripping 17;
A push rod 20 that is hinged between support 9 and the dividing plate 11, described push rod 20 have and are controlled by fault and take off first arm of force 26 of striker 10 of mouthful relay and one and match with described snap close 16 and merge second arm of force 27 that is used for release; And the length of described first arm of force 26 is greater than the length of described second arm of force 27; The afterbody of described push rod 20 matches with described moving contact strutting piece 23;
The cylindrical boss of the both sides of described rotating shaft 4 is installed in respectively between shell 1 and the dividing plate 11, because the effect of touch spring pressure, rotating shaft 4 can be carried out relatively rotating by a small margin at the circular hole on shell 1 and dividing plate 11.
Described rocking arm 8 and tripping 17 are installed in the both sides of support 9 respectively, on the described rocking arm 8 cylindrical boss 21 pass on the support 9 one section arc-shaped hole 24 offering then with tripping 17 on first circular hole 22 hinged.Described tripping 17 also has a cylindrical boss, is hinged on the counterbore of home position of arc-shaped hole 24 of support 9.When tripping 17 was locked by snap close 16, the circular hole in the tripping 17 made the quadric chain energy proper motion in the operating mechanism for rocking arm 8 provides one fixed pivot.When tripping 17 from snap close 16 during release, tripping 17 can be that fulcrum rotates with the counterbore on the support 09, cause the fulcrum that is used to rotate of rocking arm 08 to be disintegrated, the balance of the quadric chain of operating mechanism is broken, and the operating mechanism that is in "on" position is tripped under the effect of spring force.
Second arm of force 27 of described push rod is a triangle boss 28 with the snap close contact position.The afterbody 29 of described push rod 20 can produce elastic reaction for semi-circular shape is connected with main body by an end wave-like part 32.After mechanism threaded off, moving contact strutting piece 23 4 semi-circular shapes that rotate back promotion push rod 20 afterbodys around the shaft partly made its rotation, and the striker 10 that the arm of force of strutting piece 23 promotes the fault release makes it return to initial position, for prepare next time.
The returning spring 19 of described trip gear is a torsion spring, and wherein a side is hooked on the support 9, and opposite side is processed to the right angle, and the afterbody extension is inserted in second circular hole 31 of tripping 17.
Also be provided with a fault dropout indication piece 15 between described support 9 and the dividing plate 11, described indication piece 15 passes through drive link 12 and described tripping 17 interlocks, and forms fault dropout indicating devices with the retainer 13 and the returning spring 14 that are installed on the dividing plate 11.
With reference to figure 1, Fig. 2, Fig. 3, operating mechanism is in off-state, snap close 16 is with tripping 17 locking; rocking arm 8 cylindrical is protruded part and passed in the hole that support 9 is hinged on tripping 17 (with reference to figure 6), and the linkage of being made up of handle 7, kinematic link 5, kinematic link 6, rocking arm 8, strutting piece 23 can carry out normal running.Driving handle 7 can be realized the conversion of mechanism's closed and disconnected, and mechanism's closure state is with reference to figure 4.When mechanism was in closure state, fault dropout indication piece 15 and retainer 13 overlapped.
With reference to figure 5, operating mechanism is in trip status.When occurring the residue fault current in the loop, striker 10 promotion push rods 20 top first arm of force, 26 (see figure 7)s that fault is taken off mouthful relay rotate counterclockwise push rod 20, to clockwise rotate be that snap close 16 is opened with tripping 17 overlaps to gable 28 transmission snap closes 16 on second arm of force 27 of push rod 20, balance of mechanism is broken, and strutting piece 23 4 rotates to open position under acting force of the spring around the shaft; After clockwise rotating certain angle after stressed, tripping 17 resetting after the motion counterclockwise under the active force of spring 19, again with snap close 16 overlap joints that under spring 18 effects, reset; Strutting piece 23 clockwise rotates push rod 20 in the afterbody semi-circular portion 29 that promotes push rod 20 in the open position rotating process, the striker 10 that its first arm of force, 26 promotion faults were taken off mouthful relay when push rod 20 clockwise rotated resets, for prepare next time.Simultaneously, in mechanism's dropout process, because tripping 17 clockwise rotates, the arch section 34 that semicircle boss 33 in the tripping promotes on the drive link 12, the circular hole 36 of drive link 12 position in the middle of it is rotated counterclockwise, the semi-circular portion 35 that promotes when rotate on the right side of drive link 12 on the retainer 13 is slightly rotated retainer 13 counterclockwise, fault dropout indication piece 15 and retainer 13 overlap joints are opened, fault dropout indication piece 15 rotates under the active force of spring 14, thereby realizes the indication of threading off.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (11)
1. the operating mechanism of a mini-type residual current actuated breaker, be equipped with 1 pair or many in the shell to fixed contact (2) and moving contact (3), described moving contact (3) is arranged in the rotating shaft (4) by a strutting piece (23), described rotating shaft (4) is driven by the mechanism between make position and open position, it is characterized in that described mechanism comprises:
A support (9) and a dividing plate (11);
By the toggle that a manual operation handle (7) and one first kinematic link (6) are connected to form, described handle (7) is contained on the cylindrical shape boss of described support (9), can rotate around cylindrical boss;
Rocking arm (8) with 2 circular holes, wherein 1 hole is connected with operating grip (7) by first kinematic link (6), and 1 hole connects to form quadric chain by second kinematic link (5) and strutting piece (23) in addition;
A trip gear of being made up of snap close (16), tripping (17), first returning spring (18) and second returning spring (19) is installed between support (9) and the dividing plate (11); The cylindrical shape boss (21) of described rocking arm (8) is hinged in first circular hole (22) of tripping (17);
A push rod (20) that is hinged between support (9) and the dividing plate (11), described push rod (20) has first arm of force (26) of the striker (10) that is controlled by the fault tripping relay and one and matches with described snap close (16) and merge second arm of force (27) that is used for release; And the length of described first arm of force (26) is greater than the length of described second arm of force (27); The afterbody of described push rod (20) matches with described moving contact strutting piece (23);
The cylindrical boss of the both sides of described rotating shaft (4) is installed in respectively between shell (1) and the dividing plate (11), because the effect of touch spring pressure, rotating shaft (4) can be carried out relatively rotating by a small margin at the circular hole on shell (1) and dividing plate (11).
2. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1, it is characterized in that described rocking arm (8) and tripping (17) are installed in the both sides of support (9) respectively, described rocking arm (8) go up cylindrical boss (21) pass on the support (9) one section arc-shaped hole (24) of offering then with tripping (17) on first circular hole (22) hinged.
3. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 2 is characterized in that described tripping (17) is hinged on the home position of arc-shaped hole (24) of support (9).
4. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1 is characterized in that second arm of force (27) of described push rod and snap close contact position are a triangle boss (28).
5. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1 is characterized in that the afterbody (29) of described push rod (20) is connected with main body by end wave-like part (32) for semi-circular shape.
6. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1, second returning spring (19) that it is characterized in that described trip gear is a torsion spring, wherein a side is hooked on the support (9), opposite side is processed to the right angle, and the afterbody extension is inserted in second circular hole (31) of tripping (17).
7. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1 is characterized in that described first kinematic link (6) and second kinematic link (5) are " U " shape structure.
8. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1, it is characterized in that also being provided with a fault dropout indication piece (15) between described support (9) and the dividing plate (11), described indication piece (15) passes through drive link (12) and described tripping (17) interlock, and forms fault dropout indicating device with the retainer (13) and the returning spring (14) that are installed on the dividing plate (11).
9. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 8 is characterized in that arch section (34) overlap joint that the top of described tripping (17) has on a semicircle boss (33) and the drive link (12) carries out transmission.
10. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 9, the circular hole (36) that it is characterized in that the centre position of described drive link (12) are hinged on the cylindrical boss on the support (9).
11. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 10 is characterized in that the outside of described drive link (12) and the semi-circular portion (35) on the retainer (13) carry out transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495423A CN100421200C (en) | 2006-02-17 | 2006-02-17 | Operation mechanism of mini-type residual current actuated breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495423A CN100421200C (en) | 2006-02-17 | 2006-02-17 | Operation mechanism of mini-type residual current actuated breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN1808665A CN1808665A (en) | 2006-07-26 |
| CN100421200C true CN100421200C (en) | 2008-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100495423A Active CN100421200C (en) | 2006-02-17 | 2006-02-17 | Operation mechanism of mini-type residual current actuated breaker |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006044119B4 (en) * | 2006-09-20 | 2018-03-08 | Eaton Industries Gmbh | Electrical switching device |
| CN102426999B (en) * | 2011-09-13 | 2014-11-19 | 浙江正泰电器股份有限公司 | Operating mechanism of modularized breaker |
| CN103077863B (en) * | 2011-10-26 | 2015-01-28 | 乐星产电(无锡)有限公司 | Miniature circuit breaker |
| CN202749318U (en) * | 2012-08-22 | 2013-02-20 | 浙江鼎威科技有限公司 | Electromagnetic electric leakage protection switch |
| CN103811234B (en) * | 2012-11-14 | 2016-08-03 | 三信国际电器上海有限公司 | The operating mechanism of residual current circuit breaker |
| KR101698814B1 (en) * | 2015-05-13 | 2017-01-24 | 현대중공업 주식회사 | Air circuit breaker |
| CN106971920B (en) * | 2016-01-14 | 2019-09-10 | 三信国际电器上海有限公司 | The actuating mechanism that residual current action breaker uses |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000268695A (en) * | 1999-03-04 | 2000-09-29 | Abb Ricerca Spa | Tripper |
| CN2558070Y (en) * | 2001-12-27 | 2003-06-25 | 正泰集团公司 | Low-voltage small size plastic shell residual current acted circuit breaker |
| CN1525513A (en) * | 2003-06-24 | 2004-09-01 | 正泰集团公司 | Residual current action tripping device for phase line and mid line circuit breaker |
-
2006
- 2006-02-17 CN CNB2006100495423A patent/CN100421200C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000268695A (en) * | 1999-03-04 | 2000-09-29 | Abb Ricerca Spa | Tripper |
| CN2558070Y (en) * | 2001-12-27 | 2003-06-25 | 正泰集团公司 | Low-voltage small size plastic shell residual current acted circuit breaker |
| CN1525513A (en) * | 2003-06-24 | 2004-09-01 | 正泰集团公司 | Residual current action tripping device for phase line and mid line circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN1808665A (en) | 2006-07-26 |
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