CN101106046B - An operation machine for small residual current action breaker - Google Patents
An operation machine for small residual current action breaker Download PDFInfo
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- CN101106046B CN101106046B CN2007100690469A CN200710069046A CN101106046B CN 101106046 B CN101106046 B CN 101106046B CN 2007100690469 A CN2007100690469 A CN 2007100690469A CN 200710069046 A CN200710069046 A CN 200710069046A CN 101106046 B CN101106046 B CN 101106046B
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- tripping
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- push rod
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Abstract
The invention discloses an actuating mechanism of small residual current action breaker, which includes a static contact, a moving contact, and a driving mechanism. The driving mechanism includes a four-bar mechanism consisting of an operating handle, a first transmission connecting bar, a rocker, a second transmission connecting bar, and a support, a tripping device consisting of a fastener, a jump pin, a lever, a pin return spring, a fastener return spring, and a lever return spring, and a handspike of a firing pin under the control of failure trip relay. The invention has a lever between the jump pin and the fastener, through which the force on the jump pin is converted into a force on the fastener, thus making the contact pressure at the position of the fastener smaller and the control of tripping force of the mechanism easier.
Description
Technical field
The utility model relates to a kind of low-voltage electrical apparatus, a kind of operating mechanism of mini-type residual current actuated breaker specifically, and 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, tripping force 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.The disclosed technical scheme of Chinese patent CN1808665A has solved this problem well, makes residual current action breaker more safe and reliable.But the operating mechanism of this structure will guarantee the stability of the tripping force of mechanism because the contact pressure of trigger element is bigger, and the material of part and processing technology require all higher, thereby this technical scheme does not reach perfect as yet.
Summary of the invention
To be solved in the utility model is the problems referred to above that prior art exists, and a kind of operating mechanism of follow-on residual current action breaker is provided, and is intended to further improve 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 described case for circuit breaker to fixed contact and moving contact, described moving contact is arranged in the rotating shaft by the moving contact strutting piece, described rotating shaft is driven by the operating mechanism between make position and open position, and described operating mechanism comprises:
--------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 boss of described support, can rotate around cylindrical boss----;
-------one rocking arm with 2 circular holes, wherein 1 hole is connected with the manual operation handle by first kinematic link, and 1 hole connects to form quadric chain by second kinematic link and moving contact strutting piece in addition;
-------comprises that the trip gear of snap close, tripping, tripping back-moving spring and snap close back-moving 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;
-------one push rod that is hinged between support and the dividing plate, described push rod have first arm of force of the striker that is controlled by the fault tripping 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 push rod back-moving spring that is installed in the afterbody of push rod matches with described moving contact strutting piece;
Described trip gear also comprises a lever and lever returning spring, the 4th arm of force that has the 3rd arm of force that matches with first stop surface in the tripping on the described lever and match with second stop surface on the snap close, and described the 4th arm of force is greater than the 3rd arm of force.
The operating mechanism of mini-type residual current actuated breaker of the present utility model, a lever is arranged between trigger element tripping and snap close, making the power that acts in the tripping convert less masterpiece to by lever is used on the snap close, the contact pressure of snap close dropout position is diminished, the control of mechanism's tripping force is become be more prone to.
The answer that another advantage of the present utility model is a push rod is by the incompatible realization that matches of the push rod back-moving spring of the afterbody that is installed in push rod and described moving contact strutting piece, because the energy storage effect of spring, the moving contact strutting piece is in disconnecting the rotation process of action, must turn over the storage generalist who overcomes spring behind certain stroke can promote push rod and reset, can avoid misoperation, guarantee the reliability of the action of circuit breaker.
As further improvement of the utility model, described tripping also has an arc surface, in the process that operating mechanism is threaded off, and the plane contact at arc surface and the 3rd arm of force place; And the center of circle of described arc surface is positioned at the downside of the point of rotation of tripping, makes operating mechanism get back to initial position under the effect of tripping back-moving spring and lever back-moving spring, and is not stuck.
Further improve again as of the present utility model, described push rod back-moving spring is sleeved on the projection of push rod afterbody, described push rod back-moving spring one end is fixed on first draw-in groove of push rod, and the second draw-in groove follower head that the other end embeds push rod matches with described moving contact strutting piece.
Description of drawings
Below in conjunction with drawings and Examples first content of utility model done and to be described in further detail.
Schematic diagram when Fig. 1 the utility model operating mechanism is in off-state.
When Fig. 2 the utility model operating mechanism is in off-state, lay down the internal structure schematic diagram (front view) behind shell 1 and the dividing plate 48.
Internal structure schematic diagram when Fig. 3 the utility model operating mechanism is in off-state (rearview of Fig. 2).
Fig. 4 the utility model operating mechanism is in the internal structure schematic diagram when closure state, and figure median septum 11 is laid down.
Fig. 5 the utility model operating mechanism is in the internal structure schematic diagram when trip status, and figure median septum 11 is laid down.
The hinged schematic diagram of rocking arm and tripping in Fig. 6 the utility model operating mechanism.
The structural representation of tripping in Fig. 7 the utility model operating mechanism.
The structural representation of push rod in Fig. 8 the utility model operating mechanism.
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 described case for circuit breaker 1 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 operating mechanism between make position and open position, and described mechanism comprises:
--------support 9 and a dividing plate 11;
----by a manual operation handle 7 and one first toggle that kinematic link 6 is connected to form, described handle 7 is contained on the cylindrical boss of described support 9, can rotate around cylindrical boss----;
-------has the rocking arm 8 of 2 circular holes, and wherein 1 hole is connected with manual operation handle 7 by first kinematic link 6, and 1 hole connects to form quadric chain by second kinematic link 5 with strutting piece 23 in addition;
-------one trip gear of being made up of snap close 16, lever 40, tripping 17, tripping back-moving spring 18 and lever back-moving spring 19, snap close back-moving spring 44 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; Have on the described lever 40 the 3rd arm of force 37 that matches with first stop surface 38 in the tripping 17 and with and snap close 16 on the 4th arm of force 42 that matches of second stop surface 43, and described the 4th arm of force 42 is greater than the 3rd arm of force 37;
-------is hinged on the push rod 20 between support 9 and the dividing plate 11, and 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 push rod back-moving spring 29 that is installed in the afterbody of push rod 20 matches with described moving contact strutting piece 23; Described push rod back-moving spring 29 is sleeved on the projection 46 of push rod 20 afterbodys, and described push rod back-moving spring 29 1 ends are fixed on first draw-in groove 45, and the other end embeds second draw-in groove, 47 follower heads and matches with described moving contact strutting piece 23;
Described tripping 17 also has an arc surface 39, in the process that operating mechanism is threaded off, and the plane contact at arc surface 39 and the 3rd arm of force 37 places; And the center of circle of described arc surface 39 is positioned at the downside of the point of rotation 25 of tripping 17, makes operating mechanism get back to initial position under the effect of tripping back-moving spring 18 and lever back-moving spring 19, and is not stuck.
Opposite side at support 9 is provided with another dividing plate 48, the cylindrical boss of the both sides of described rotating shaft 4 is installed in respectively between shell 1 and the dividing plate 48, 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 48.
Described rocking arm 8 and tripping 17 are installed in the both sides of support 9 respectively, on the described rocking arm 8 cylindrical shape 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 by lever 40, 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 9, cause the fulcrum that is used to rotate of rocking arm 8 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.After mechanism threaded off, the moving contact strutting piece 23 4 push rod back-moving springs 29 that rotate on the back promotion push rod 20 around the shaft made its rotation, and the striker 10 that first arm of force 26 on the push rod 20 promotes the fault release makes it return to initial position, for prepare next time.
The tripping back-moving spring 18 of described trip gear is a torsion spring, is sleeved on the projection 32 of tripping 17, and wherein a side of torsion spring is hooked on the support 9, and opposite side is processed to the right angle, and described right angle afterbody extension is inserted in second circular hole 31 of tripping 17.
The lever back-moving spring 19 of described trip gear is a torsion spring, and wherein a side of torsion spring is by hanging on the support 9, and opposite side is processed to the right angle, and afterbody extension retaining in described right angle is at the sidewall of lever 40.
The snap close back-moving spring 44 of described trip gear is a torsion spring, and wherein a side of torsion spring is by hanging on the support 9, and opposite side is processed to the right angle, and afterbody extension retaining in described right angle is at the sidewall of snap close 16.
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 locks tripping 17 by lever 40; the cylindrical protrusion part of rocking arm 8 is passed hole internal reference Fig. 6 that support 9 is hinged on tripping 17, 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, fault is taken off the striker 10 promotion push rods 20 first top arm of forces 26 of mouthful relay and is seen that Fig. 8 rotates counterclockwise push rod 20, gable 28 transmission snap closes 16 clockwise rotate snap close 16 and lever 40 overlaps are opened 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; Tripping 17 drives lever 40 and rotates counterclockwise clockwise rotating, tripping 17 contacts the arc surface 39 that is converted in the tripping 17 with the contact matching of lever 40 by first stop surface 38 in the tripping 17 and contacts with the 3rd arm of force 37 of lever with the 3rd arm of force 37 of lever, back tripping 17 motion counterclockwise under the active force of spring 18 turns an angle, lever 40 is motion clockwise under the active force of spring 19, snap close 16 is motion counterclockwise under acting force of the spring, make the 3rd arm of force 37 of lever 40 and the 4th arm of force 42 respectively again with first stop surface 38 of tripping 17 and second stop surface, 43 contact matching on the snap close 16; Strutting piece 23 clockwise rotates push rod 20 at the spring 29 that promotes on the push rod 20 in the open position rotating process, and 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 proterties 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 utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection range of the present utility model.
Claims (7)
1. the operating mechanism of a mini-type residual current actuated breaker, be equipped with 1 pair or many in the shell of described circuit breaker (1) to fixed contact (2) and moving contact (3), described moving contact (3) is arranged in the rotating shaft (4) by a moving contact strutting piece (23), described rotating shaft (4) is driven by the described operating mechanism between make position and open position, and described operating mechanism comprises:
--------support (9) and a dividing plate (11);
----toggle that----is connected to form by a manual operation handle (7) and one first kinematic link (6), described handle (7) is contained on the cylindrical boss of described support (9), can rotate around cylindrical boss;
-------has the rocking arm (8) of 2 circular holes, and wherein 1 hole is connected with manual operation handle (7) by first kinematic link (6), and 1 hole connects to form quadric chain by second kinematic link (5) and moving contact strutting piece (23) in addition;
-------comprises that the trip gear of snap close (16), tripping (17), tripping back-moving spring (18) and snap close back-moving spring (44) 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);
-------is hinged on the push rod (20) 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 push rod back-moving spring (29) that is installed in the afterbody of push rod (20) matches with described moving contact strutting piece (23);
It is characterized in that: described trip gear also comprises a lever (40) and lever back-moving spring (19), the 4th arm of force (42) that has the 3rd arm of force (37) that matches with last first stop surface of tripping (17) (38) on the described lever (40) and match with second stop surface (43) on the snap close (16), and described the 4th arm of force (42) is greater than the 3rd arm of force (37).
2. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1, it is characterized in that described tripping (17) also has an arc surface (39), in the process that operating mechanism is threaded off, the plane contact at arc surface (39) and the 3rd arm of force (37) place; And the center of circle of described arc surface (39) is positioned at the downside of the point of rotation (25) of tripping (17), makes operating mechanism get back to initial position under the effect of tripping back-moving spring (18) and lever back-moving spring (19), and is not stuck.
3. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 1, it is characterized in that described push rod back-moving spring (29) is sleeved on the projection (46) of push rod (20) afterbody, described push rod back-moving spring (29) one ends are fixed on first draw-in groove (45) of push rod (20), and second draw-in groove (47) follower head that the other end embeds push rod (20) matches with described moving contact strutting piece (23).
4. 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, the cylindrical shape boss (21) on the described rocking arm (8) pass one section arc-shaped hole (24) of offering on the support (9) then with tripping (17) on first circular hole (22) hinged.
5. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 4, it is characterized in that described tripping back-moving spring (18) is a torsion spring, be sleeved on the projection (32) of tripping (17), wherein torsion spring one side is hooked on the support (9), opposite side is processed to the right angle, and the right angle afterbody extension of described opposite side is inserted in second circular hole (31) of tripping (17).
6. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 5, the lever back-moving spring (19) that it is characterized in that described trip gear is a torsion spring, wherein torsion spring one side is by hanging on the support (9), opposite side is processed to the right angle, and the right angle afterbody extension retaining of described opposite side is at the sidewall of lever (40).
7. the operating mechanism of mini-type residual current actuated breaker as claimed in claim 5, the snap close back-moving spring (44) that it is characterized in that described trip gear is a torsion spring, wherein torsion spring one side is by hanging on the support (9), opposite side is processed to the right angle, and the right angle afterbody extension retaining of described opposite side is at the sidewall of snap close (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100690469A CN101106046B (en) | 2007-06-07 | 2007-06-07 | An operation machine for small residual current action breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100690469A CN101106046B (en) | 2007-06-07 | 2007-06-07 | An operation machine for small residual current action breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101106046A CN101106046A (en) | 2008-01-16 |
| CN101106046B true CN101106046B (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100690469A Active CN101106046B (en) | 2007-06-07 | 2007-06-07 | An operation machine for small residual current action breaker |
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| CN (1) | CN101106046B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SK288388B6 (en) * | 2009-07-13 | 2016-09-05 | Hess R&D, S. R. O. | The trigger mechanism of current protector with overcurrent protection |
| CN101958206B (en) * | 2009-12-09 | 2013-01-16 | 上海诺雅克电气有限公司 | Miniature circuit breaker operation mechanism capable of realizing multi-control input and output |
| CN101930883B (en) * | 2010-09-16 | 2012-06-20 | 方华朋 | Small-sized breaker |
| WO2012045209A1 (en) * | 2010-10-09 | 2012-04-12 | Fang Huapeng | Miniature breaker |
| CN103077860B (en) * | 2012-12-28 | 2015-02-25 | 常熟开关制造有限公司(原常熟开关厂） | Leakage tripper |
| CN104319203B (en) * | 2014-11-13 | 2017-08-25 | 杭州泰姆电气有限公司 | Circuit breaker operation mechanism |
| CN106935451B (en) * | 2015-12-30 | 2019-04-30 | 三信国际电器上海有限公司 | A kind of closing device and the residual current action breaker with the device |
| CN108899256B (en) * | 2018-07-27 | 2024-02-23 | 高能格乐电气股份有限公司 | Leakage tripping device of universal two circuit breakers |
| CN110155722B (en) * | 2019-06-17 | 2024-03-22 | 深圳市赛弥康电子科技有限公司 | Buckle butt joint device |
| CN110661232B (en) * | 2019-11-15 | 2022-04-12 | 微电联合(湖北)科技有限公司 | Three-phase multifunctional protector |
| CN113948349B (en) * | 2021-10-28 | 2023-12-12 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
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2007
- 2007-06-07 CN CN2007100690469A patent/CN101106046B/en active Active
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