CN101335164A - Operation apparatus of automatically jumping small circuit breaker - Google Patents
Operation apparatus of automatically jumping small circuit breaker Download PDFInfo
- Publication number
- CN101335164A CN101335164A CNA2008100215506A CN200810021550A CN101335164A CN 101335164 A CN101335164 A CN 101335164A CN A2008100215506 A CNA2008100215506 A CN A2008100215506A CN 200810021550 A CN200810021550 A CN 200810021550A CN 101335164 A CN101335164 A CN 101335164A
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- lever
- moving contact
- contact
- spring
- circuit breaker
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Abstract
The invention relates to an operating device of small-sized breaker being capable of freely releasing. The device of the invention mainly adopts the structure that a handle, a lever, a moving contact, a locking component, a main shaft and a jump component are arranged in a shell. The device of the invention is characterized in that the moving contact is articulated with the locking component and the lever through the main shaft; one end of a contact reaction spring is connected with the moving contact, and the other end is connected with the lever; one end of the locking spring is connected with the locking component, and the other end is connected on the lever; one end of an energy storing spring is connected with the lever, and the other end is connected with a shaft that is fixedly connected with the shell. The device of the invention has simple, compact and reasonable structure, leads to more stable contact pressure between the moving and static contact, only requires general process accuracy, reduces cost, simultaneously can improve the linear velocity for the moving contact to be disconnected and is a small-sized operating device of a breaker which can freely release with more reasonable layout of the contact pressure spring and the energy storing spring.
Description
Technical field
The present invention relates to a kind of miniature circuit breaker operating means of trip free, the operating mechanism that specifically has the miniature circuit breaker of free tripping mechanism, the free tripping mechanism between its handle and the moving contact snap close position between tripping part and snap close piece can throw off mechanism by release.
Background technology
The effect of operating mechanism is the active force that transmits operating grip, the motion of drive moving contact, realize the connection and the disjunction of circuit breaker, to reach between dynamic/static contact and keep enough contact pressures in order to make, also to make moving contact that enough excess of stroke are arranged, also to make during off-state to have enough electric clearances between dynamic/static contact, have enough dielectric strengths between dynamic/static contact so that guarantee; The effect of free tripping mechanism is when handle is in the close position, and the actuating snap close piece is triped free tripping mechanism, and moving contact is got back to off-state.
In prior art, as application (patent) number: 93108067.3 miniature circuit breaker (automatic switch), its operating means is mainly formed free tripping mechanism by handle, lever, tripping part, U-shaped bar and snap close piece, adopt moving contact to be connected indirectly by a lever with operator link mechanism, one of one energy-stored spring hangs on the moving contact, and one hangs on one that is fixed on shell; Moving contact is connected by a lever indirectly with operator link mechanism; Moving contact can make the kinematic error at moving contact place increase because of being connected indirectly with the combination of operator link mechanism, thereby for guaranteeing that mechanism reliability need improve the accuracy of manufacture of part; Simultaneously, connection has also reduced the linear velocity when the moving contact movement velocity particularly begins to move indirectly, has limited the segmentation capacity from this meaning.In addition, the energy storage of contact pressure and contact disconnection is all finished by an energy-stored spring; Because of the movement tendency at moving contact place is bigger than motion of mechanism amount, makes the contact pressure error between dynamic/static contact become big, thereby easily caused the instability of contact pressure; Therefore, need the high part accuracy of manufacture to guarantee the stable of contact pressure.This patented product of selling on the market has also reflected the design deficiency of itself, as in the big electric current product of realizing even use and push up silver bullion at moving contact and reduce contact resistance, compensation contact pressure (bigger contact pressure can obtain lower contact resistance), this certainly will increase cost, also increases the difficulty that product is realized simultaneously.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, make the contact pressure between dynamic/static contact more stable thereby provide a kind of; Only need general craft precision, cost reduces; Linear velocity in the time of can improving simultaneously the moving contact disconnection, the miniature circuit breaker operating means of contact pressure spring and the more rational trip free of energy-stored spring layout.
According to technical scheme provided by the invention, it mainly adopts handle, lever, moving contact, snap close piece, main shaft and tripping part is installed in the enclosure; Main shaft is fixed on the shell, and lever, snap close piece are connected on the main shaft by a through hole respectively; The tripping part is hinged by U-shaped connecting rod and handle; Handle is rotationally connected in the enclosure; Snap close piece can be torqued into the position that locks mutually with the tripping part by latch spring; The fixed contact that is fixedly installed on the shell is the fulcrum of the fashionable moving contact of circuit breaker closing, lever in the energy-stored spring effect down to off position, feature is: described moving contact is hinged by pivot pin and lever, tripping part, and moving contact is close on main shaft under the effect of contact reaction spring.
Described contact reaction spring one end is connected on the moving contact, and the other end is connected on the lever; Described latch spring one end is connected on the snap close piece, and the other end is connected on the lever; Described energy-stored spring one end is connected on the lever, and the other end is connected on one that fixes with shell.
Described moving contact is hinged with lever in lever by pivot pin; The tripping part is hinged with lever outside lever by pivot pin.
Described lever becomes the U-shaped symmetrical structure, and is provided with laterally zygomorphic lever ear.
Described contact reaction spring both ends symmetry hangs on the lever ear, and root is supported on the moving contact.
Described latch spring one end is connected on the hook of snap close piece, and the other end is connected on the lever ear of lever, and two effect ends are in lever the same side.
One arc-shaped slot is set on the described moving contact, acts on the arc groove that contact reaction spring root on the moving contact places moving contact.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Can make the contact pressure between dynamic/static contact more stable; Relatively low element precision requirement, cost reduces; Linear velocity in the time of can improving simultaneously the moving contact disconnection, the miniature circuit breaker operating means of contact pressure spring and the more rational trip free of energy-stored spring layout.
Description of drawings
Fig. 1 is the present invention's in the enclosure open position schematic diagram under user mode.
Fig. 2 is the present invention's in the enclosure make position schematic diagram under user mode.
Fig. 3 is a main parts size decomposing schematic representation of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As Fig. 1～shown in Figure 3, comprising: shell 1, handle 2, U-shaped connecting rod 3, tripping part 4, lever 5 (lever ear 5a and lever ear 5b), moving contact 6 (groove 6a), snap close piece 7 (hook 7a), main shaft 8, pivot pin 9, contact reaction spring 10, latch spring 11, energy-stored spring 12 and fixed contact 13 etc.
The present invention adopts the free tripping mechanism of being made up of lever 5, snap close piece 7 and tripping part 4 is installed in shell 1; Tripping 4, lever 5, moving contact 6 are installed on the pivot pin 9; Moving contact 6 is corresponding with fixed contact 13; Fixed contact 13 is welded on the hard system conductor, and is fixed in together on the shell 1; The U-shaped connecting rod 3 that handle 2 also is installed on shell 1 and handle 2 and free tripping mechanism are coupled together.
Described tripping part 4, lever 5 and 9 rivetings of moving contact 6 usefulness pivot pins together, described moving contact 6 by pivot pin 9 lever 5 in and lever 5 hinged; Tripping part 4 is hinged with lever 5 outside lever 5 by pivot pin 9; Pivot pin 9 and moving contact 6 tight fits, with tripping part 4, lever 5 matched in clearance, each part is free to rotate each other behind the riveted; Lever 5 and snap close piece 7 usefulness main shafts 8 are through together, are matched in clearance, and are free to rotate each other; Main shaft 8 is fixed on the shell 1, and main shaft 8 and pivot pin 9 are parallel to each other.
The middle part of the middle part of described snap close piece 7 and lever 5 offers through hole respectively, is rotationally connected with on the main shaft 8 by this through hole; Be provided with a through hole in the upper end of lever 5, also be respectively arranged with through hole at an end and the middle part of tripping part 4, hinged tripping part 4, lever 5 at the through hole and the tripping part 4 of lever 5 upper ends near passing pivot pin 9 in the through hole of lever 5 one ends; The other end of tripping part 4 can lock together with the upper end of snap close piece 7; One latch spring 11 is housed on the snap close piece 7, latch spring 11 is installed on the projection with axle 8 concentric snap close pieces 7, described latch spring 11 1 ends are connected on the hook 7a of snap close piece 7, and the other end is connected on the lever ear 5a of lever 5, and two effect ends are in lever 5 the same sides; Snap close piece 7 clockwise directions rotate to the direction of tripping part 4 under the effect of latch spring 11.
One end of described moving contact 6 is provided with a circular hole, by this hole moving contact 6 is hinged on the lever 5, and the pin joint of the pin joint of moving contact 6 and lever 5 and lever 5 and tripping part 4 is same points, promptly on pivot pin 9.5 one-tenth U-shaped symmetrical structures of described lever, and be designed to laterally zygomorphic lever ear 5a, 5b; Moving contact 6 and lever 5 tighten together by a contact reaction spring 10; One arc-shaped slot 6a is set on the described moving contact 6, acts on the arc groove 6a that contact reaction spring 10 roots on the moving contact 6 place moving contact 6.Described contact reaction spring 10 both ends symmetries hang on the lever ear 5a, and root is supported on the moving contact 6.
One end hook of described energy-stored spring 12 is on a lever ear 5b of lever 5, and the other end of energy-stored spring 12 hangs on the axle that is fixed in shell 1, and active force upright lever ear 5b.Energy-stored spring 12 pull lever 5 move to the position that moving contact 6 disconnects.Handle 2 is directly installed on the axle of shell 1, and U-shaped connecting rod 3 couples together tripping part 4 and handle 2 by the through hole at the middle part of tripping part 4.
When operating grip 2 when on-position (as shown in Figure 2) rotates, transmission by U-shaped connecting rod 3, promoting free tripping mechanism and moving contact 6 rotates around main shaft 8 clockwise directions, when moving contact 6 moves to when contacting with fixed contact 13, moving contact 6 just can not travel forward with fixed contact 13 position contacting under the stopping of fixed contact 13 again, this moment is when handle 2 travels forward again, lever 5 continues clockwise direction and rotates, the contact point that moving contact 6 then changes moving contact 6 and fixed contact 13 into rotates, moving contact 6 separates with main shaft 8, produce relative rotation between lever 5 and the moving contact 6,10 distortion of contact reaction spring are increased, this power that increases suddenly just has been added on the moving contact 6, and the contact pressure between dynamic/static contact is increased suddenly; Handle 2 travels forward until closure again, and contact pressure that moving contact 6 and fixed contact are 13 continues to increase, and until the contact pressure that satisfies design, and this section moving contact 6 should rotate and moving virtual stroke is exactly the excess of stroke.
When operating grip 2 round about, above-mentioned action is opposite, is opening operation.
Under the normal condition, tripping part 4 and snap close piece 7 are locked, and can drive moving contact 6 motions by operating grip 2, realize the make-break operation of circuit breaker; When fault takes place, be that overcurrent or short circuit all can produce an external force and act on the snap close piece 7, make snap close piece 7 motion counterclockwise, thereby the button between tripping part 4 and the snap close piece 7 is unclamped, tripping part 4 clockwise directions rotate, lever 5 and moving contact 6 counterclockwise rotate under the effect of energy-stored spring, the final open position that arrives as shown in Figure 1.
Claims (6)
1, a kind of miniature circuit breaker operating means of trip free, it mainly adopts handle (2), lever (5), moving contact (6), snap close piece (7), main shaft (8) and tripping part (4) is installed in shell (1); Main shaft (8) is fixed on the shell (1), and lever (5), snap close piece (7) are connected on the main shaft (8) by a through hole respectively; Tripping part (4) is hinged by U-shaped connecting rod (3) and handle (2); Handle (2) is rotatably connected in the shell (1); Snap close piece (7) can be torqued into the position that locks mutually with tripping part (4) by latch spring (11); The fixed contact (13) that is fixedly installed on the shell is the fulcrum of the fashionable moving contact of circuit breaker closing (6), lever (5) acts on down to off position at energy-stored spring (12), it is characterized in that: described moving contact (6) is hinged by pivot pin (9) and lever (5), tripping part (4), described contact reaction spring (10) one ends are connected on the moving contact (6), and the other end is connected on the lever (5); Described latch spring (11) one ends are connected on the snap close piece (7), and the other end is connected on the lever (5); Described energy-stored spring (12) one ends are connected on the lever (5), and the other end is connected on one that fixes with shell (1).
2, the miniature circuit breaker operating means of a kind of trip free according to claim 1 is characterized in that described moving contact (6) is hinged with lever (5) in lever (5) by pivot pin (9); Tripping part (4) is hinged with lever (5) outside lever (5) by pivot pin (9).
3, the miniature circuit breaker operating means of a kind of trip free according to claim 1 is characterized in that described lever (5) becomes the U-shaped symmetrical structure, and is provided with laterally zygomorphic lever ear (5a), (5b).
4, the miniature circuit breaker operating means of a kind of trip free according to claim 1 and 2 is characterized in that described contact reaction spring (10) becomes the U-shaped structure, and the both ends symmetry hangs on the lever ear (5a), and root is supported on the moving contact (6).
5, the miniature circuit breaker operating means of a kind of trip free according to claim 1 is characterized in that described latch spring (11) one ends are connected on the hook (7a) of snap close piece (7), and the other end is connected on the lever ear (5a) of lever (5).
6, the miniature circuit breaker operating means of a kind of trip free according to claim 1, it is characterized in that described moving contact (6) is provided with arc-shaped slot (6a), act on the arc groove (6a) that contact reaction spring (10) root on the moving contact (6) places moving contact (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100215506A CN101335164A (en) | 2008-08-05 | 2008-08-05 | Operation apparatus of automatically jumping small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100215506A CN101335164A (en) | 2008-08-05 | 2008-08-05 | Operation apparatus of automatically jumping small circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101335164A true CN101335164A (en) | 2008-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100215506A Pending CN101335164A (en) | 2008-08-05 | 2008-08-05 | Operation apparatus of automatically jumping small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101335164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459443A (en) * | 2019-09-09 | 2019-11-15 | 温州东极电气有限公司 | A kind of fast reaction dual-interruption point breaker |
-
2008
- 2008-08-05 CN CNA2008100215506A patent/CN101335164A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459443A (en) * | 2019-09-09 | 2019-11-15 | 温州东极电气有限公司 | A kind of fast reaction dual-interruption point breaker |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |