CN201069745Y - An operating mechanism of small residual current action breaker - Google Patents
An operating mechanism of small residual current action breaker Download PDFInfo
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- CN201069745Y CN201069745Y CNU200720110052XU CN200720110052U CN201069745Y CN 201069745 Y CN201069745 Y CN 201069745Y CN U200720110052X U CNU200720110052X U CN U200720110052XU CN 200720110052 U CN200720110052 U CN 200720110052U CN 201069745 Y CN201069745 Y CN 201069745Y
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- 230000007246 mechanism Effects 0.000 title claims abstract description 60
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- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an operating mechanism for small-sized residual current operated breakers which comprises a static contact, a moving contact and a driving mechanism. The driving mechanism has a four-connecting-rod mechanism which consists of an operating handle, a first driving rod, a rocker, a second driving rod and a support member; a tripping device which consists of a lock catch, a trip buckle, a lever, a return spring for the trip buckle, a return spring for the lock catch, and a return spring for the lever; and a push rod controlled by the firing pin of a fault tripping relay. The utility model is characterized in that a lever is arranged between the tripping elements, namely the trip buckle and the lock catch, and by the lever, the force applied on the trip buckle is transformed into smaller force to be applied on the lock catch, thus reducing the contact pressure between the lock catch and the trip buckle and facilitating the control of the tripping force of the mechanism.
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 shell to fixed contact and moving contact, described moving contact is arranged in the rotating shaft by a strutting piece, and described rotating shaft is driven by the mechanism between make position and open position, and described 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 shape boss of described support, can rotate around cylindrical boss----;
-------one 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;
-------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, have on the described lever the 3rd arm of force that matches with first stop surface in the tripping and with and snap close on the 4th arm of force that matches of second stop surface, 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-shaped surface, in the process that mechanism threads 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 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 as of the present utility model, described push rod back-moving spring is sleeved on the projection of push rod afterbody again, and an end is fixed on first draw-in groove, and free end embeds the second draw-in groove follower head and 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 shell 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, support, described rotating shaft 4 is driven by the 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 shape 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 operating grip 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 the 4th back-moving spring 29 is sleeved on the projection 46 of push rod 20 afterbodys, and an end is fixed on first draw-in groove 45, and free 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-shaped surface 39, in the process that mechanism threads 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 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 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 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.
The lever back-moving spring 19 of described trip gear is a torsion spring, and wherein a side is by hanging on the support 9, and opposite side is processed to the right angle, and afterbody extension retaining 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 is by hanging on the support 9, and opposite side is processed to the right angle, and afterbody extension retaining 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 (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 mechanism between make position and open position, and described 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 shape 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 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;
-------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), have on the described lever (40) the 3rd arm of force (37) that matches with last first stop surface of tripping (17) (38) 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).
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-shaped surface (39), in the process that mechanism threads 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 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, one end is fixed on first draw-in groove (45), and free end embeds second draw-in groove (47) follower head and 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, 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.
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 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).
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 a side is by hanging on the support (9), and opposite side is processed to the right angle, and afterbody extension retaining 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 a side is by hanging on the support (9), and opposite side is processed to the right angle, and afterbody extension retaining is at the sidewall of snap close (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720110052XU CN201069745Y (en) | 2007-06-07 | 2007-06-07 | An operating mechanism of small residual current action breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720110052XU CN201069745Y (en) | 2007-06-07 | 2007-06-07 | An operating mechanism of small residual current action breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069745Y true CN201069745Y (en) | 2008-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720110052XU Expired - Lifetime CN201069745Y (en) | 2007-06-07 | 2007-06-07 | An operating mechanism of small residual current action breaker |
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|---|---|
| CN (1) | CN201069745Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054630A (en) * | 2010-12-01 | 2011-05-11 | 沈阳斯沃电器有限公司 | Operating mechanism for large-capacity low-voltage circuit breaker |
| CN104299859A (en) * | 2014-09-29 | 2015-01-21 | 江苏普华力拓电器股份有限公司 | Circuit breaker with indicator |
| CN114784578A (en) * | 2022-03-24 | 2022-07-22 | 中国电力科学研究院有限公司 | DC socket applied to low-voltage DC field |
| CN115513014A (en) * | 2022-09-29 | 2022-12-23 | 厦门宏发开关设备有限公司 | Tripping mechanism of circuit breaker and circuit breaker |
| WO2024067301A1 (en) * | 2022-09-29 | 2024-04-04 | 厦门宏发汽车电子有限公司 | Tripping mechanism of circuit breaker, and circuit breaker |
| CN118398452A (en) * | 2024-06-28 | 2024-07-26 | 浙江天正电气股份有限公司 | Quick tripping mechanism |
| CN119324142A (en) * | 2024-10-17 | 2025-01-17 | 重庆交通大学 | Movable contact device of low-voltage circuit breaker |
-
2007
- 2007-06-07 CN CNU200720110052XU patent/CN201069745Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054630A (en) * | 2010-12-01 | 2011-05-11 | 沈阳斯沃电器有限公司 | Operating mechanism for large-capacity low-voltage circuit breaker |
| CN104299859A (en) * | 2014-09-29 | 2015-01-21 | 江苏普华力拓电器股份有限公司 | Circuit breaker with indicator |
| CN114784578A (en) * | 2022-03-24 | 2022-07-22 | 中国电力科学研究院有限公司 | DC socket applied to low-voltage DC field |
| CN114784578B (en) * | 2022-03-24 | 2024-04-12 | 中国电力科学研究院有限公司 | Direct current socket applied to low-voltage direct current field |
| CN115513014A (en) * | 2022-09-29 | 2022-12-23 | 厦门宏发开关设备有限公司 | Tripping mechanism of circuit breaker and circuit breaker |
| WO2024067301A1 (en) * | 2022-09-29 | 2024-04-04 | 厦门宏发汽车电子有限公司 | Tripping mechanism of circuit breaker, and circuit breaker |
| CN118398452A (en) * | 2024-06-28 | 2024-07-26 | 浙江天正电气股份有限公司 | Quick tripping mechanism |
| CN119324142A (en) * | 2024-10-17 | 2025-01-17 | 重庆交通大学 | Movable contact device of low-voltage circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080604 Effective date of abandoning: 20070607 |