CN103367054A - Circuit breaker motion mechanism - Google Patents
Circuit breaker motion mechanism Download PDFInfo
- Publication number
- CN103367054A CN103367054A CN201210086513XA CN201210086513A CN103367054A CN 103367054 A CN103367054 A CN 103367054A CN 201210086513X A CN201210086513X A CN 201210086513XA CN 201210086513 A CN201210086513 A CN 201210086513A CN 103367054 A CN103367054 A CN 103367054A
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- connecting rod
- handle
- upper connecting
- circuit breaker
- moving contact
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a circuit breaker motion mechanism comprising a handle, an upper connecting rod, a moving contact head, a jumping fastener and a locking fastener. When the handle rotates, the upper connecting rod and the moving contact head are driven to rotate, and switch-on and switch-off are realized; when the jumping fastener is separated from the locking fastener, the upper connecting rod and the moving contact head rotate, and therefore the switch-off is realized; no connecting member is arranged between the handle and the upper connecting rod; when the switch-off is realized, the handle and the upper connecting rod respectively rotate in an independent manner; a swing arm protrudes on the handle; when the switch-on is realized by rotating the handle, the lower end of the swing arm contacts with the upper surface o the upper connecting rod and sliding friction is generated, and therefore the upper connecting rod and the moving contact head are enabled to rotate. The circuit breaker motion mechanism is characterized in that the connecting member between the handle and the upper connecting rod is eliminated; when the switch-on is realized, the swinging arm protruding on the handle can contact with the upper connecting rod to drive the upper connecting rod to move; when the switch-off is realized, the handle and the upper connecting rod can rotate respectively and independently without any friction or restriction between the handle and the upper connecting rod, mutual interference is prevented, and therefore the breaking speed of a circuit breaker is improved.
Description
Technical field
The present invention relates to circuit breaker and realize the actuating mechanism of divide-shut brake motion, belong to Low Voltage Electrical Apparatus.
Background technology
At present, the actuating mechanism of common miniature circuit breaker generally is made of handle, U-shaped connecting rod, drive link, moving contact, tripping and snap close etc., when pulling handle, drives drive link and moving contact motion by the U-shaped connecting rod, make moving contact with the fixed contact contact or separate realization combined floodgate or separating brake; When tripping mechanism was freed the tripping of mutual fastening and snap close, actuating mechanism also can be moved, and moving contact is separated with fixed contact, realized separating brake.
A kind of connection structure of breaker handle is disclosed such as Chinese utility model patent 201020506403.0, comprise handle connecting shaft, be socketed in spring that described handle connecting shaft bottom is used for reseting handle, be connected to U-shaped connecting rod between handle and the drive link etc., handle needs drive drive link and moving contact motion by the U-shaped connecting rod.
The actuating mechanism of circuit breaker and arc-control device have conclusive impact to its breaking capacity, such as, because the restriction of mechanism arrangement and arc-control device, the breaking capacity of conventional C45 Series Circuit Breakers is 63A/230V, circuit breaker is when disjunction, and the intrinsic time of actuating mechanism motion is longer.By evidence, the mechanism of conventional C45 product is generally 6-8ms the intrinsic time, and this deposits large difficulty when electric arc is gone out in suction.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of actuating mechanism of circuit breaker, can improve the breaking speed of circuit breaker, to overcome the defects of prior art.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of actuating mechanism of circuit breaker, comprise handle, upper connecting rod and moving contact, and when handle rotates, drive upper connecting rod and moving contact and rotate, realize closing a floodgate or separating brake; Also comprise tripping and snap close, when tripping separated with snap close, upper connecting rod and moving contact rotated, and realized separating brake; Do not have connecting elements between described handle and the upper connecting rod, during separating brake, handle and upper connecting rod be independent rotation separately; Protrude a swing arm on the described handle, when turning handle closed a floodgate, the lower end of described swing arm contacted with the upper surface of upper connecting rod and sliding friction occurs, and connecting rod and moving contact are rotated.
Preferably, the rear surface of described swing arm is smooth curved surface.
Preferably, described swing arm and handle are one-body molded.
Preferably, be connected with the handle back-moving spring on the described handle, described handle back-moving spring applies the torque of rotating to the separating brake direction to handle.
Preferably, be connected with the connecting rod back-moving spring on the described upper connecting rod, described upper connecting rod back-moving spring applies the torque of rotating to the separating brake direction to upper connecting rod.
Preferably, also comprise a support, described moving contact is rotatably connected on the support.
The present invention has cancelled the connecting elements (such as the U-shaped connecting rod) between handle and the upper connecting rod, and handle and upper connecting rod are separated, and during combined floodgate, the swing arm of protruding on the handle can contact with upper connecting rod, link motion in the promotion; When circuit breaks down and during the dropout separating brake, handle and upper connecting rod be independent rotation separately, there are not each other friction or restriction, can the phase mutual interference, thus improved the breaking speed of circuit breaker.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is that the actuating mechanism of circuit breaker of the present invention is at the schematic diagram of "on" position.
Fig. 2 is that the actuating mechanism of circuit breaker of the present invention is at the schematic diagram of gate-dividing state.
Embodiment
As shown in Figure 1, the actuating mechanism of circuit breaker of the present invention comprises that handle 1, upper connecting rod 3 and moving contact 7 are installed in the pedestal 2, but does not have the U-shaped connecting rod between handle 1 and the upper connecting rod 3, and other connecting elements is not set yet, but protrudes a swing arm 11 from handle.In this preferred embodiment, this swing arm 11 is integrated with handle 1, and moving contact 7 is rotatably connected on the support 6.
Under gate-dividing state, as shown in Figure 2, handle 1 comprises that swing arm 11 does not all contact with upper connecting rod 3, separates fully.
Only have when turning handle closes a floodgate, clockwise direction turning handle 1 such as Fig. 1, the lower end 111 of swing arm just can contact with the upper surface 31 of upper connecting rod and sliding friction occurs, thereby connecting rod 3 rotates in the promotion, driving snap close 5, support 6 and moving contact 7 by connecting rod again moves together, this moment, snap close 5 fastened with tripping 4, finally made moving contact 7 and fixed contact 8 closed together, finished whole making process.Under "on" position, realize static locking between the lower end 111 of swing arm and the upper surface 31 of upper connecting rod.For the ease of relative sliding, the surface of the lower end 111 of swing arm preferably is made as smooth curved surface.As seen, in making process, the present invention can realize with prior art in have the identical function of the structure of U-shaped connecting rod.
Advantage of the present invention is mainly reflected in the separating brake process.As shown in Figure 2, during breaker open operation, the thrust that tripping 4 is subject to tripping mechanism clockwise rotates, and causes snap close 5 to separate with tripping 4, and mechanism's release disconnects.In the moment of release, connecting rod 3 was rotated counterclockwise a minute angle (0.3 degree) before this under the effect of snap close 5, the locking effect of 3 pairs of handles of connecting rod is removed, owing to be connected with handle back-moving spring (not shown) on the handle 1, the handle back-moving spring applies the torque of rotating to the separating brake direction to handle, therefore handle 1 independent rotation under the effect of handle back-moving spring is back to rapidly the separating brake point; Meanwhile, owing to be connected with connecting rod back-moving spring (not shown) on the upper connecting rod 3, upper connecting rod back-moving spring applies the torque of rotating to the separating brake direction to upper connecting rod 3, make connecting rod 3 by clockwise direction independent rotation shown in Figure 2, drive moving contact 7 and open with fixed contact 8, finish the separating brake overall process.In the separating brake process, because handle 1 is the cell cube of independent rotation with upper connecting rod 3, there is not each other the possibility of friction or restriction, so, opening velocity can obviously rise, and break-time can shorten 2ms than the mechanism that prior art has the U-shaped connecting rod, thereby breaking capacity is significantly risen.
Claims (6)
1. the actuating mechanism of a circuit breaker comprises handle (1), upper connecting rod (3) and moving contact (7), drives upper connecting rod (3) and moving contact (7) and rotate when handle (1) rotates, and realizes closing a floodgate or separating brake; Also comprise tripping (4) and snap close (5), when tripping (4) and snap close (5) when separating, upper connecting rod (3) and moving contact (7) rotate, and realize separating brake; It is characterized in that not having connecting elements between described handle (1) and the upper connecting rod (3), during separating brake, handle (1) and upper connecting rod (3) be independent rotation separately; The swing arm (11) of the upper protrusion of described handle (1), when turning handle (1) closes a floodgate, the lower end of described swing arm (111) contacts with the upper surface (31) of upper connecting rod and sliding friction occurs, and connecting rod (3) and moving contact (7) are rotated.
2. the actuating mechanism of circuit breaker according to claim 1 is characterized in that, the lower end of described swing arm (111) surface is smooth curved surface.
3. the actuating mechanism of circuit breaker according to claim 1 is characterized in that, described swing arm (11) is one-body molded with handle (1).
4. the actuating mechanism of circuit breaker according to claim 1 is characterized in that, described handle is connected with the handle back-moving spring on (1), and described handle back-moving spring applies the torque of rotating to the separating brake direction to handle (1).
5. the actuating mechanism of circuit breaker according to claim 1 is characterized in that, is connected with the connecting rod back-moving spring on the described upper connecting rod (3), and described upper connecting rod back-moving spring applies the torque of rotating to the separating brake direction to upper connecting rod (3).
6. the actuating mechanism of circuit breaker according to claim 1 is characterized in that, also comprises a support (6), and described moving contact (7) is rotatably connected on the support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210086513.XA CN103367054B (en) | 2012-03-28 | 2012-03-28 | The actuating mechanism of isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210086513.XA CN103367054B (en) | 2012-03-28 | 2012-03-28 | The actuating mechanism of isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103367054A true CN103367054A (en) | 2013-10-23 |
| CN103367054B CN103367054B (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210086513.XA Active CN103367054B (en) | 2012-03-28 | 2012-03-28 | The actuating mechanism of isolating switch |
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| Country | Link |
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| CN (1) | CN103367054B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0408466A2 (en) * | 1989-07-11 | 1991-01-16 | Merlin Gerin | Operating mechanism for an electric switch |
| DE10124353A1 (en) * | 2001-05-18 | 2002-12-05 | Siemens Ag | Switch mechanism for protective switch has locking device and release lever integrated into switch handle |
| CN1832082A (en) * | 2005-03-07 | 2006-09-13 | 浙江德力西电器股份有限公司 | Operation mechanism of small circuit breaker |
| CN201302964Y (en) * | 2008-08-21 | 2009-09-02 | 浙江正泰电器股份有限公司 | A small-size equidirectional series double-breakpoint circuit breaker |
| CN102034652A (en) * | 2010-12-22 | 2011-04-27 | 上海良信电器股份有限公司 | Operating mechanism for molded case circuit breaker |
| CN202585285U (en) * | 2012-03-28 | 2012-12-05 | 上海良信电器股份有限公司 | Action mechanism of breaker |
-
2012
- 2012-03-28 CN CN201210086513.XA patent/CN103367054B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0408466A2 (en) * | 1989-07-11 | 1991-01-16 | Merlin Gerin | Operating mechanism for an electric switch |
| DE10124353A1 (en) * | 2001-05-18 | 2002-12-05 | Siemens Ag | Switch mechanism for protective switch has locking device and release lever integrated into switch handle |
| CN1832082A (en) * | 2005-03-07 | 2006-09-13 | 浙江德力西电器股份有限公司 | Operation mechanism of small circuit breaker |
| CN201302964Y (en) * | 2008-08-21 | 2009-09-02 | 浙江正泰电器股份有限公司 | A small-size equidirectional series double-breakpoint circuit breaker |
| CN102034652A (en) * | 2010-12-22 | 2011-04-27 | 上海良信电器股份有限公司 | Operating mechanism for molded case circuit breaker |
| CN202585285U (en) * | 2012-03-28 | 2012-12-05 | 上海良信电器股份有限公司 | Action mechanism of breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103367054B (en) | 2016-06-08 |
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