CN201364861Y - Short circuit protection device used for thermomagnetic overcurrent tripping device - Google Patents
Short circuit protection device used for thermomagnetic overcurrent tripping device Download PDFInfo
- Publication number
- CN201364861Y CN201364861Y CNU2009200421096U CN200920042109U CN201364861Y CN 201364861 Y CN201364861 Y CN 201364861Y CN U2009200421096 U CNU2009200421096 U CN U2009200421096U CN 200920042109 U CN200920042109 U CN 200920042109U CN 201364861 Y CN201364861 Y CN 201364861Y
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- armature
- short
- circuit protection
- circuit breaker
- circuit
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Abstract
A short circuit protection device used for a thermomagnetic overcurrent tripping device, and belongs to the technical field of low-voltage apparatus. The current tripping device comprises a base, an overload protection device and a short circuit protection device which are arranged on the base and a conducting bar. The device is characterized in that the short circuit protection device comprises an armature, a magnetic yoke, a reaction spring, a bracket and an axle, wherein the magnetic yoke is fixed on the bracket; the bracket is connected with the conducting bar; the armature can be rotationally pivoted on the bracket through the axle, and a trip actuating mechanism which directly acts on the tripping device of a circuit breaker and can enable the circuit breaker to be cut off is formed on the armature; the middle part of the reaction spring is mounted on the axle, one end of the reaction spring is in contact with the armature, and the other end thereof is in contact with the bracket. The device has the advantages that the structure is simplified, the processing is convenient, the manufacture cost is reduced, the action time of the circuit breaker when the short circuit current occurs can be reduced, and the rapid cutoff of the circuit breaker in case of short circuit currents and the safety during the use of the circuit breaker self can be guaranteed.
Description
Technical field
The utility model relates to the circuit breaker overcurrent trip, relate in particular to a kind of short-circuit protection of Thermomagnetic type overcurrent trip, belong to the low voltage electrical apparatus technology field.
Background technology
At present, be used in the electromagnetic type overcurrent trip in the low-pressure plastic shell circuit breaker, its operating current setting value can be that fix or adjustable, utilizes knob to regulate draw bar during adjusting usually.Overcurrent trip can be divided into fixed installation formula or modularization installing type again by mounting means.Fixed installation formula release and Shell of circuit breaker are processed as one, in case dispatch from the factory, its release short circuit action protection electric current is unadjustable; And modularization installing type release can be changed at any time as an installed module of circuit breaker, and flexibility is very strong, and release short circuit action protection electric current can be adjusted within the specific limits on demand simultaneously, and the leeway that the user selects is bigger, and it is also convenient to make.
With existing a kind of adjustable type Thermomagnetic type overcurrent trip is example; this overcurrent trip comprises base, is located at overload protection arrangement on the base and short-circuit protection and by shared push rod of overload protection arrangement and short-circuit protection etc. respectively, and described short-circuit protection comprises short circuit adjusting knob, short circuit adjusting rod, armature, yoke etc.Short-circuit protection comes regulating magnet gap or electromagnet action counter-force by the position that rotation short circuit adjusting knob changes the short circuit adjusting rod.At reset mode, push rod is limited by the short circuit adjusting rod, and when short circuit current took place, yoke attracted armature, and armature overcomes counter-force and promotes the short circuit adjusting rod, discharges push rod, removes to promote the trip gear of circuit breaker again by push rod, and circuit breaker is disconnected.
The deficiency of this design is: when circuit generation overcurrent; the dropout action of circuit breaker will be transmitted by a plurality of parts; prolonged operate time; when short circuit accident takes place; the deferred action of short-circuit protection will cause damage to personal safety and facility; circuit and circuit breaker consequence safe in utilization itself exerts an influence; therefore; deficiency at above-mentioned design existence; common way is to increase a short circuit trip gear in the pedestal of circuit breaker again; when short circuit current takes place, directly act on the trip gear of circuit breaker by this additional short circuit trip gear, make circuit breaker realize disconnecting fast.But this design makes the structure of circuit breaker more become complicated owing to increased the short circuit trip gear, has improved the manufacturing cost and the difficulty of product simultaneously.
Summary of the invention
The purpose of this utility model is the short-circuit protection that a kind of Thermomagnetic type overcurrent trip will be provided; it directly acts on the trip gear of circuit breaker by armature; not only simplified the structure of circuit breaker; manufacturing cost and difficulty have been reduced; shortened the operate time of circuit breaker when short circuit current takes place simultaneously, guaranteed the safety that circuit breaker disconnects rapidly and circuit breaker itself uses when short circuit current takes place.
The purpose of this utility model reaches like this, a kind of short-circuit protection of Thermomagnetic type overcurrent trip, described overcurrent trip comprise base 1, respectively be located at overload protection arrangement and the short-circuit protection on the base 1 and be located on the base 1 by overload protection arrangement and the shared busbar 2 of short-circuit protection, be characterized in: described short-circuit protection comprises armature 3, yoke 4, reaction spring 5, support 6 and axle 7, and described yoke 4 is fixed on the support 6; Described support 6 is connected with busbar 2; Described armature 3 on support 6, also is being formed with on the trip gear 8 that is used to directly act on circuit breaker and the dropout actuating mechanism that circuit breaker is disconnected by axle 7 hub settings rotationally on the armature 3; The middle part of described reaction spring 5 is installed on the axle 7, and an end of reaction spring 5 contacts with armature 3, and the other end of reaction spring 5 contacts with support 6.
Dropout actuating mechanism described in the utility model is a push rod 31, and push rod 31 is arranged on the armature 3 integratedly.
The utility model is formed with a bending 311 in the end of described push rod 31.
The nearly medium position place of armature described in the utility model 3 both sides offers and is used for and axle 7 two axis holes 32 that cooperate, and described push rod 31 is arranged on the top in armature 3 one side shaft holes 32.
The utility model is owing to adopted said structure, by the dropout actuating mechanism on the armature 3---push rod 31 directly acts on the disconnection that realizes circuit breaker on the trip gear 8 of circuit breaker, need not to resemble increases a short circuit trip gear the prior art again in the pedestal of circuit breaker, can not only simplified structure, convenient processing, reduce manufacturing cost, and operate time of circuit breaker can shorten short circuit current and take place the time, guarantee that circuit breaker disconnects rapidly and the safety of circuit breaker use itself when short circuit current takes place.
Description of drawings
Fig. 1 is applied to structural representation on the circuit breaker for the utility model.
Fig. 2 is applied to structure cutaway view on the circuit breaker for the utility model.
Fig. 3 is installed in structural representation on the overcurrent trip for the utility model short-circuit protection.
Fig. 4 is the structural representation of the utility model short-circuit protection and busbar 2.
Fig. 5 is the structural representation that armature 3 cooperates with the trip gear 8 of circuit breaker in the utility model short-circuit protection.
Fig. 6 is the structural representation of armature 3 in the utility model short-circuit protection.
Among the figure: 1. base; 2. busbar; 3. armature, 31. push rods, 311. bendings, 32. axis holes; 4. yoke; 5. reaction spring; 6. support, 61. boss; The axle; 8. the trip gear of circuit breaker.
Embodiment
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to the utility model scheme embodiment.
See also Fig. 1,2,3,4, the utility model short-circuit protection comprises armature 3, yoke 4, reaction spring 5, support 6 and axle 7, and described armature 3 on support 6, also is formed with a dropout actuating mechanism by axle 7 hub settings rotationally on armature 3; The middle part of described reaction spring 5 is sleeved on the axle 7, and an end of reaction spring 5 contacts with armature 3, and the other end of reaction spring 5 contacts with support 6.Because the effect of reaction spring 5 is resisted against on the pair of projections 61 of support 6 both sides armature 3, makes the certain air gap of maintenance between armature 3 and the yoke 4.
See also Fig. 6 and in conjunction with Fig. 5, the nearly medium position place of armature described in the utility model 3 both sides offers two axis holes 32, above armature 3 one side shaft holes 32, extended a strip push rod 31 integratedly, also be formed with a bending 311 in the end of push rod 31.This strip push rod 31 can directly act on the trip gear 8 of circuit breaker as the dropout actuating mechanism, and makes circuit breaker realize disconnecting fast.
See also Fig. 1; 2; 3; and in conjunction with Fig. 4; Fig. 5 and Fig. 6; a kind of short-circuit protection of Thermomagnetic type overcurrent trip; described overcurrent trip comprises base 1; be located at overload protection arrangement and short-circuit protection on the base 1 respectively; and be located on the base 1 by overload protection arrangement and the shared busbar 2 of short-circuit protection; the yoke 4 of described short-circuit protection and support 6 riveted and fixed are on busbar 2; the a pair of axis hole 32 that described armature 3 is offered by armature 3 two ends is installed on the support 6 by axle 7 with reaction spring 5; and can rotate around axle 7; at reset mode; because the effect of reaction spring 5; armature 3 is resisted against on the pair of projections 61 of support 6; make the certain air gap of maintenance between armature 3 and the yoke 4, then short-circuit protection is installed in the base 1.The bending 311 of the end of the strip push rod 31 that forms on the armature 3 is corresponding to the trip gear 8 of described circuit breaker, and at reset mode, bending 311 keeps certain spacing with the trip gear 8 of circuit breaker.
When being short-circuited electric current in the circuit; Short-Circuit High Current is crossed at busbar 2 upper reaches; the suction that produces when yoke 4 is during greater than the active force of reaction spring 5; the motion that armature 3 is done near yoke 4 directions around axle 7 by the suction of yoke 4; because the strip push rod 31 that forms on the armature 3 is on axis hole 32 tops; when armature 3 is done the motion of close yoke 4 directions; push rod 31 is done the direction motion away from yoke 4; promptly move to trip gear 8 directions of circuit breaker; move to the bending 311 of working as on the push rod 31 and touch the trip gear 8 of circuit breaker; the trip gear 8 that promotes circuit breaker makes the circuit breaker action; be that armature 3 acts directly on the circuit breaker tripping device 8 and makes circuit breaker trip, also promptly realized the short-circuit protection of pyromagnetic overcurrent release.
The utility model also is suitable for for adjustable type Thermomagnetic type overcurrent trip.
Claims (5)
1, a kind of short-circuit protection of Thermomagnetic type overcurrent trip, described overcurrent trip comprise base (1), respectively be located at overload protection arrangement and the short-circuit protection on the base (1) and be located on the base (1) by overload protection arrangement and the shared electric guide (2) of short-circuit protection, it is characterized in that described short-circuit protection comprises armature (3), yoke (4), reaction spring (5), support (6) and axle (7), described yoke (4) is fixed on the support (6); Described support (6) is connected with busbar (2); Described armature (3) on support (6), also is being formed with on the trip gear that is used to directly act on circuit breaker and the dropout actuating mechanism that circuit breaker is disconnected by axle (7) hub setting rotationally on the armature (3); The middle part of described reaction spring (5) is installed on the axle (7), and an end of reaction spring (5) contacts with armature (3), and the other end of reaction spring (5) contacts with support (6).
2, the short-circuit protection of Thermomagnetic type overcurrent trip according to claim 1 is characterized in that described dropout actuating mechanism is a push rod (31), and push rod (31) is arranged on the armature (3) integratedly.
3, the short-circuit protection of Thermomagnetic type overcurrent trip according to claim 2 is characterized in that described push rod (31) is a strip.
4,, it is characterized in that being formed with a bending (311) in the end of described push rod (31) according to the short-circuit protection of claim 2 or 3 described Thermomagnetic type overcurrent trips.
5, the short-circuit protection of Thermomagnetic type overcurrent trip according to claim 1 and 2; the nearly medium position place that it is characterized in that described armature (3) both sides offers and is used for two axis holes (32) that cooperate with axle (7), and described push rod (31) is arranged on the top in armature (3) one side shaft holes (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200421096U CN201364861Y (en) | 2009-03-20 | 2009-03-20 | Short circuit protection device used for thermomagnetic overcurrent tripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200421096U CN201364861Y (en) | 2009-03-20 | 2009-03-20 | Short circuit protection device used for thermomagnetic overcurrent tripping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201364861Y true CN201364861Y (en) | 2009-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200421096U Expired - Lifetime CN201364861Y (en) | 2009-03-20 | 2009-03-20 | Short circuit protection device used for thermomagnetic overcurrent tripping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201364861Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749384A (en) * | 2017-11-01 | 2018-03-02 | 常熟瑞特电气股份有限公司 | A kind of double yoke Thermomagnetic type releases |
-
2009
- 2009-03-20 CN CNU2009200421096U patent/CN201364861Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749384A (en) * | 2017-11-01 | 2018-03-02 | 常熟瑞特电气股份有限公司 | A kind of double yoke Thermomagnetic type releases |
| CN107749384B (en) * | 2017-11-01 | 2020-03-17 | 常熟瑞特电气股份有限公司 | Double-yoke thermomagnetic release |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091216 |
|
| CX01 | Expiry of patent term |