CN2457727Y - High split small braker - Google Patents
High split small braker Download PDFInfo
- Publication number
- CN2457727Y CN2457727Y CN 00257291 CN00257291U CN2457727Y CN 2457727 Y CN2457727 Y CN 2457727Y CN 00257291 CN00257291 CN 00257291 CN 00257291 U CN00257291 U CN 00257291U CN 2457727 Y CN2457727 Y CN 2457727Y
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- tripping
- contact
- handle
- breaking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a small high-breaking circuit-breaker. An operating mechanism with four connecting bars, which is composed of a handle, connecting bars which are meshed mutually and a jumping buckle, releases a spring by taking a pressure spring as a contact point; the pressure of a contact is stable, and operating performance is reliable. The protection of overload breaking is realized by that a bimetal sheet is deformed to push a lock catch to be released, and the protection of short circuit breaking is realized by that an iron core of a magnetic system is attracted to release the jumping buckle. A pull rod penetrates through the iron core of the magnetic system and extends out of a movable contact to avoid the fusion welding of the contact at the time of breaking protection. The utility model is suitable for the overload and short-circuit protection of distribution circuits with the alternate current of 50Hz, the rated voltage of 380 V and the rated current of 63 A and below, and the utility model can also be used for the non-frequent make-break operation and conversion of circuits.
Description
The utility model relates to a kind of low-voltage circuit breaker.
Low-voltage circuit breaker is a kind of important protection electrical equipment in the low-voltage network, and when faults such as the serious overload of circuit generation, short circuit, the disengagement failure circuit is protected the electric equipment that is connected on its back effectively automatically.The primary element that existing low-voltage circuit breaker generally has contact and the arc quenching system of carrying out on-off circuit, experience the circuit abnormal state has reached the trip free and the operating mechanism of intermediate transfer effect.In the known configurations between contact electrodynamic repulsion force reduced its breaking capacity, easily cause and melt the weldering accident.And, influenced the operational stability and the reliability of operating mechanism because its contact pressure is little.
The purpose of this utility model is: a kind of high breaking miniature circuit breaker is provided, makes its flexible operation reliable, and stable performance, and can avoid contact to melt weldering, improve breaking capacity.
The technical scheme that realizes the utility model purpose is as follows: in a kind of high breaking miniature circuit breaker that mainly comprises trip free and operating mechanism, contact and arc control device, its trip free and operating mechanism are quadric chain, form by handle, some connecting rods and tripping, fixedly connected with moving contact after handle and some connecting rods flexibly connect successively, moving contact is relative with fixed contact to be settled again.Tripping also flexibly connects with connecting rod, snap close be installed in corresponding with tripping and the position that can fasten on.In snap close one side bimetal leaf is installed, and can promotes snap close after making the bi-metal plate deformed bending.Fixedlying connected with magnetic system in the below of bimetal leaf, is equipped with a pull bar in the middle of the iron core of magnetic system, and this pull bar also passes from moving contact, and the other end is equipped with a push rod.Upper fixed in frame has compression spring, and the other end and the connecting rod of this spring withstand.
Owing to adopt technique scheme, when making the handle of pulling the utility model circuit breaker operation mechanism, the drive of the connecting rod of living by the phase lap of quadric chain, switching force is passed to moving contact, make it closed, connecting rod also drives tripping and snap close locking simultaneously, makes it to keep power connection.
When electric current was excessive, bimetal leaf generation distortion promoted snap close, and tripping is threaded off, and under the contact pressure spring action, connecting rod resets rapidly, and moving contact and fixed contact separate, electric current disjunction, the overload protection of realization distribution line.When electric current is especially big, the iron core adhesive of magnetic system, push rod stretches out the promotion snap close, and tripping is threaded off, and the moving contact of pull bar pulling simultaneously separates, and realizes the short circuit breaking protection of circuit breaker.
The operating mechanism of the utility model circuit breaker adopts quadric chain, flexible operation, and the working pressure spring increased contact pressure, makes the stable operation of operating mechanism reliable.Adopt in the magnetic system and wear Tiebar structure, when the contact disjunction, pull bar stretchy moving contact separates with fixed contact like this.Compared with prior art, the utility model makes reliable breaking, avoids contact to melt weldering, improves breaking capacity.
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 is the cut-away view of the utility model high breaking miniature circuit breaker
Among the figure: 1. top cover 2. bimetal leafs 3. snap closes 4. trippings 5. handles
6. connecting rod I 7. connecting rod II 8. connecting rod III 9. compression springs
10. pull bar 11. moving contacts 12. fixed contacts 13. supports
14,16. flash barriers, 15. arc control device, 17. magnetic systems
18. push rod
Figure 1 shows that an embodiment of the utility model high breaking miniature circuit breaker, this circuit breaker is a moulded case low voltage circuit breaker, have support 13 and top cover 1, its trip free and operating mechanism are four-bar linkage structure, are made up of handle 5, three connecting rods of taking mutually and tripping 4.A flexible connection of handle 5 lower ends and connecting rod I 6 tops, one of the other end of connecting rod I 6 and connecting rod II 7 links to each other, and flexibly connect with an end of tripping 4 chutes, a flexible connection of the other end of connecting rod II 7 and connecting rod III 8, the lower end of connecting rod III 8 and moving contact 11 pass through rivet.Flexible connection in the present embodiment between handle, some connecting rods and tripping is pin and connects.Fixed contact and moving contact 11 relative arrangements, contact adopt silver-patina cadmium material that breaking capacity is improved greatly.With tripping 4 corresponding positions on snap close 3 is housed, bimetal leaf 2 is installed in the side near snap close 3, its below is fixing with magnetic system 17 welding.Pull bar 10 is located in the middle of the iron core of magnetic system 17, and passes by moving contact 11, and the iron core other end is equipped with push rod 18.One end and the frame of contact pressure spring are fixed, and the other end and connecting rod I 6 are withstood.Arc control device 14 place in the support of circuit breaker below, are made up of grid sheet and flash barrier 14,16.
Course of action of the present utility model and principle are as follows: see also shown in Figure 1, when handle 5 is pulled to the right, promote connecting rod I 6 and be moved to the left downwards, connecting rod I 6 promotes connecting rod II 7 simultaneously, and, drive moving contact 11 and close with fixed contact 12 by connecting rod II 7 promotion connecting rod III 8.Electric current is just exported by coil, the binding post of fixed contact, moving contact 11, frame, bimetal leaf 2 and magnetic system 17.Meanwhile also to drive tripping 4 sealed with snap close 3 for connecting rod I 6.When the upper shaft mind-set left side of connecting rod I 6 surpassed axle center, lower end and handle axial connecting line, operating mechanism was lockable under the effect of contact compression spring 9, connects with holding circuit.
When electric current was excessive, bimetal leaf 2 generations were crooked, promote snap close 3 by it, and tripping 4 is threaded off, and under compression spring 9 effects, each connecting rod resets rapidly, and moving contact 11 separates with fixed contact 12, electric current disjunction, the overload protection of realization circuit breaker.When being short-circuited fault, produce especially big electric current, this moment, the coil of magnetic system 17 will produce powerful electromagnetic attraction.Iron core is adhesive immediately under the coil the action of a magnetic field, makes the push rod 18 at the other end stretch out promotion snap close 3, and tripping 4 is threaded off, and pull bar 10 promotes moving contacts 11 to be separated with fixed contact, electric current disjunction, the short-circuit protection of realization circuit breaker.
The utility model is applicable to interchange 50Hz, and rated voltage is to 380V, and rated current is to 63A and following, and specified operation short circuit breaking capacity is no more than 6000A, transships and short-circuit protection in the protection distribution line, also can be used as the usefulness of frequent make-break operation of circuit and conversion.
Claims (3)
1. high breaking miniature circuit breaker, comprise: trip free and operating mechanism, contact and arc control device, it is characterized in that: described trip free and operating mechanism are quadric chain, form by handle (5), some connecting rods and tripping (4), fixedly connected with moving contact (11) after handle (5) and some connecting rods flexibly connect successively, moving contact (11) is relative with fixed contact to be settled again; Tripping (4) also flexibly connects with connecting rod, snap close (3) be installed in corresponding with tripping (4) and the position that can fasten on; In snap close (3) one sides bimetal leaf (2) is installed, and can promotes snap close (3) after making bimetal leaf (2) bending; Fixedlying connected with magnetic system (17) in the below of bimetal leaf (2), is equipped with a pull bar (10) in the middle of the iron core of magnetic system (17), and this pull bar (10) also passes from moving contact (11), and the other end is equipped with a push rod (18); Upper fixed in frame has compression spring (9), and the other end and the connecting rod of this spring (9) withstand.
2. high breaking miniature circuit breaker according to claim 1, it is characterized in that: described quadric chain comprises handle (5), connecting rod I (6), connecting rod II (7), connecting rod III (8) and tripping (4), a flexible connection of handle (5) lower end and connecting rod I (6) top, one of the other end of connecting rod I (6) and connecting rod II (7) links to each other, and flexibly connect with an end of tripping (4) chute, a flexible connection of the other end of connecting rod II (7) and connecting rod III (8), fixedly connected with moving contact (11) in the lower end of connecting rod III (8).
3. high breaking miniature circuit breaker according to claim 1 and 2 is characterized in that: the flexible connection between described handle (5), some connecting rods, tripping (4) is pin and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257291 CN2457727Y (en) | 2000-10-13 | 2000-10-13 | High split small braker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257291 CN2457727Y (en) | 2000-10-13 | 2000-10-13 | High split small braker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457727Y true CN2457727Y (en) | 2001-10-31 |
Family
ID=33613847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00257291 Expired - Fee Related CN2457727Y (en) | 2000-10-13 | 2000-10-13 | High split small braker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457727Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298003C (en) * | 2004-05-25 | 2007-01-31 | Tcl国际电工(无锡)有限公司 | Small circuit breaker |
| WO2010000144A1 (en) * | 2008-07-04 | 2010-01-07 | 湖北盛佳电器设备有限公司 | Breaker with short circuit self-locking function |
| CN101930883A (en) * | 2010-09-16 | 2010-12-29 | 方华朋 | Small-sized breaker |
| CN101567282B (en) * | 2009-05-26 | 2011-02-09 | 创奇科技有限公司 | Circuit breaker |
| CN102354636A (en) * | 2011-07-28 | 2012-02-15 | 法泰电器（江苏）股份有限公司 | Arc-extinguishing device of circuit breaker |
| CN108335954A (en) * | 2018-04-22 | 2018-07-27 | 中欧电气有限公司 | A kind of moving contact component of plug in circuit breaker |
-
2000
- 2000-10-13 CN CN 00257291 patent/CN2457727Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298003C (en) * | 2004-05-25 | 2007-01-31 | Tcl国际电工(无锡)有限公司 | Small circuit breaker |
| WO2010000144A1 (en) * | 2008-07-04 | 2010-01-07 | 湖北盛佳电器设备有限公司 | Breaker with short circuit self-locking function |
| CN101567282B (en) * | 2009-05-26 | 2011-02-09 | 创奇科技有限公司 | Circuit breaker |
| CN101930883A (en) * | 2010-09-16 | 2010-12-29 | 方华朋 | Small-sized breaker |
| CN101930883B (en) * | 2010-09-16 | 2012-06-20 | 方华朋 | Small-sized breaker |
| CN102354636A (en) * | 2011-07-28 | 2012-02-15 | 法泰电器（江苏）股份有限公司 | Arc-extinguishing device of circuit breaker |
| CN108335954A (en) * | 2018-04-22 | 2018-07-27 | 中欧电气有限公司 | A kind of moving contact component of plug in circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |