CN209104098U - Breaker - Google Patents
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- CN209104098U CN209104098U CN201821652059.9U CN201821652059U CN209104098U CN 209104098 U CN209104098 U CN 209104098U CN 201821652059 U CN201821652059 U CN 201821652059U CN 209104098 U CN209104098 U CN 209104098U
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- mandril
- contact
- iron core
- tripping
- dynamic
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Abstract
The utility model relates to Low Voltage Electrical Apparatus, and in particular to a kind of breaker comprising magnetictrip and operating mechanism, operating mechanism include tripping lever, and magnetictrip drives operating mechanism tripping by tripping lever；The magnetictrip includes dynamic iron core and the mandril that connect with dynamic iron core, and mandril one end is equipped with top rod driving portion, and top rod driving portion is equipped with the driving groove with tripping lever driving cooperation；The breaker of the utility model, structure is simple and interrupting performance is good.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, and in particular to a kind of breaker.
Background technique
The contact surface of existing miniature circuit breaker, the tripping lever of the mandril and operating mechanism of magnetictrip is one flat
Face, stress point easily fluctuates when triggering is threaded off, and drop-away time susceptible is unfavorable to the interrupting performance of breaker.
Summary of the invention
The purpose of the utility model is to overcome the defect of the prior art, a kind of breaker is provided, structure is simple and disjunction
Performance is good.
To achieve the above object, the utility model adopts the technical scheme that
A kind of breaker comprising magnetictrip 1 and operating mechanism, operating mechanism include tripping lever 5, electromagnetic trip
Device 1 drives operating mechanism tripping by tripping lever 5；
The magnetictrip 1 includes dynamic iron core 11 and the mandril 12 connecting with dynamic iron core 11, and 12 one end of mandril is equipped with top
Bar driving portion 120, top rod driving portion 120 are equipped with the driving groove 121 with the tripping driving cooperation of lever 5.
Preferably, the tripping lever 5 and the part for driving groove 121 to cooperate are the arcuate structure of convex.
Preferably, mandril mounting groove 110 is arranged in described 11 one end of dynamic iron core, and mandril mounting groove 110 is inserted into 12 one end of mandril
It is interior and with mandril mounting groove 110 be interference fitted.
Preferably, the magnetictrip 1 further includes coil brace 10, electromagnetic coil, static iron core 13 and reaction spring
14, electromagnetic coil is wrapped in outside coil brace 10, and rack ventilating hole is arranged in the middle part of coil brace 10, and static iron core 13 is fixed at
Rack ventilating hole one end, dynamic iron core 11 are slidably arranged in the other end of rack ventilating hole, one opposite with static iron core 11 of dynamic iron core 11
End setting mandril mounting groove 110,12 one end of mandril pass through in the middle part of static iron core 13 and are interference fitted with mandril mounting groove 110, top
Bar 12 is slidably matched with static iron core 13, and reaction spring 14 is set on mandril 12, and one end is connected with static iron core 13, the other end and dynamic
Iron core 11 is connected.
It preferably, further include static contact 2, the moving contact being connected with operating mechanism 3 and buffer spring 4, static contact 2 includes
Stationary contact bridge 20 and the stationary contact 21 that 20 side of stationary contact bridge is arranged in, buffer spring 4 are arranged in 20 other side of stationary contact bridge, buffering elastic
4 one end of spring is connected with stationary contact bridge 20, and the other end is connected with circuit breaker housing 100, when moving contact 3 and static contact 2 are closed, buffering elastic
Spring 4 is compressed.
Preferably, the circuit breaker housing 100 is equipped with spring mounting groove 40, and buffer spring 4 is arranged in spring mounting groove
In 40, spring mounting groove 40 is arranged between one end and stationary contact bridge 20 of stationary contact bridge 20 hides gap 41.
Preferably, the setting of spring mounting groove 40 is opposite in 20 side of stationary contact bridge and stationary contact 21.
Preferably, the moving contact 3 includes dynamic touching bridge and the movable contact that dynamic touching bridge one end is arranged in, and is moved close in the middle part of touching bridge
Arc-shaped protrusions 31 are set at movable contact, and arc-shaped protrusions 31 and movable contact are located at the two sides of dynamic touching bridge.
Preferably, the dynamic touching bridge is additionally provided with evacuation notch 32, and the same of dynamic touching bridge is arranged in movable contact in evacuation notch 32
Side, evacuation notch 32 are oppositely arranged with arc convex 31.
Preferably, the operating mechanism includes being pivoted on the intracorporal substrate 6 of shell, and substrate is connected by connecting rod and handle
It connects, contact support, tripping, tripping lever 5 are rotatably installed on substrate, and tripping and tripping lever 5 are snap-fitted, moving contact 3
It is fixed in contact support by installing spring, the driving groove 121 of 12 end of mandril hits arc raised on tripping lever 5
Structure releases tripping and tripping, and lever 5 is snap-fitted that operating mechanism is made to thread off.
The breaker of the utility model, the setting of top rod driving portion and the tripping lever mated of the mandril of magnetictrip
Groove is driven, makes breaker in tripping, the stress point for lever of threading off is stable and concentrates, and avoids or significantly reduce drop-away time
Fluctuation, be conducive to improve breaker interrupting performance.
In addition, mandril mounting groove is arranged in its dynamic iron core one end, mandril one end insertion mandril mounting groove is interference fitted with it, moves
Iron core is connected directly with mandril, lower for required precision, makes dynamic iron core and mandril that can use cold pier technique one-pass molding,
It improves production efficiency and reduces production cost.
Moreover, the breaker of the utility model further includes buffer spring, buffer spring one end is connected with stationary contact bridge, the other end
It is connected with circuit breaker housing, when moving contact and static contact are closed, buffer spring is compressed, and is absorbed the impact energy of moving contact, is kept away
Exempt to contact firmly between moving contact and static contact, moving contact caused to be bounced, make/static contact between generate high-voltage arc, calcination
The case where dynamic/static contact, occurs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model breaker；
Fig. 2 is the enlarged structure schematic diagram of the part A of the utility model Fig. 1；
Fig. 3 is the first structure diagram of the utility model magnetictrip；
Fig. 4 is the second structural schematic diagram of the utility model magnetictrip.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1-4 is provided, the specific embodiment party of the breaker of the utility model is further illustrated
Formula.The breaker of the utility model is not limited to the following description.
The utility model breaker comprising magnetictrip 1 and operating mechanism, operating mechanism include tripping lever 5, electricity
Magnetic release 1 drives operating mechanism to realize tripping by tripping lever 5；The magnetictrip 1 include dynamic iron core 11 and with it is dynamic
The mandril 12 that iron core 11 connects, the top rod driving portion 120 of 12 one end of mandril are equipped with recessed with the driving of the tripping driving cooperation of lever 5
Slot 121.
The contact surface of the mandril of existing breaker and lever of threading off is a flat surface, the easy wave of stress point for lever of threading off when tripping
Dynamic, drop-away time susceptible keeps the interrupting performance of breaker unstable.
The breaker of the utility model, the setting of top rod driving portion and the tripping lever mated of the mandril of magnetictrip
Groove is driven, makes breaker in tripping, so that when mandril and de- mouth lever contact, no matter how mandril, which rotates, can be abutted against
Touching, and reduce the possible contact position of the contact point of mandril and de- mouth lever when tripping, keep the stress point of tripping lever steady
Fixed and concentration, avoids or significantly reduces the fluctuation of drop-away time, is conducive to the interrupting performance for improving breaker.
As shown in Figure 1, being one embodiment of the utility model breaker.
The utility model breaker includes circuit breaker housing 100, and the electromagnetic trip being arranged in circuit breaker housing 100
Device 1, operating mechanism, static contact 2 and moving contact 3, operating mechanism are located at 1 right side of magnetictrip, operating mechanism and 3 phase of moving contact
Even, static contact 2 is arranged below magnetictrip 1, and moving contact 3 is located at 2 right side of static contact, and the two is oppositely arranged；
As shown in Figure 1, the operating mechanism includes tripping lever 5, tripping lever 5 is equipped with the protrusion towards magnetictrip
The arcuate structure of shape.Described 11 one end of dynamic iron core is arranged mandril mounting groove 110,12 one end of mandril be inserted into mandril mounting groove 110 with
It is interference fitted.
Existing miniature circuit breaker, the mandril of magnetictrip use Shooting Technique machine-shaping, and need and dynamic iron core
The axis of protrusion is cooperated, high to the axis required precision of dynamic iron core protrusion, need to use turnery processing dynamic iron core, efficiency low cost
Height, furthermore mandril uses injection molding, and die life is limited.
Mandril mounting groove is arranged in dynamic iron core one end of the magnetictrip of the utility model, and mandril installation is inserted into mandril one end
Slot is interference fitted with it, and dynamic iron core is connected directly with mandril, lower for required precision, use dynamic iron core and mandril can
Cold pier technique one-pass molding, improves production efficiency and reduces production cost.
Preferably, the non-magnetic material such as aluminium can be used instead of traditional plastic material, using cold pier in the mandril 12
Technique is processed and formed at one time.
The direction as shown in Fig. 1,3,4, the magnetictrip 1 include electromagnetic coil, coil brace 10, dynamic iron core 11, top
Bar 12, static iron core 13 and reaction spring 14, electromagnetic coil are wrapped in outside coil brace 10, and bracket is arranged in the middle part of coil brace 10
Through-hole, dynamic iron core 11 are slidably arranged in rack ventilating hole left end, and static iron core 13 is fixed at rack ventilating hole right end, and dynamic iron core 11 is right
End setting mandril mounting groove 110, the left end of mandril 12 passes through in the middle part of static iron core 13, in insertion mandril mounting groove 110 and with top
The inner sidewall of bar mounting groove 110 is interference fitted, and mandril 12 is slidably matched with static iron core 13, and reaction spring 14 is set in mandril 12
The left end of periphery, reaction spring 14 is connected with dynamic iron core 11, and the right end of reaction spring 14 is connected with static iron core 13,12 right end of mandril
Top rod driving portion 120 is set, and 120 right end of top rod driving portion is equipped with driving groove 121.
Preferably, the center of coil brace 10 is arranged in the rack ventilating hole, and the axis of the two is identical.
Preferably, as shown in figure 3, the driving groove 121 is square groove, effectively expand the area of groove profile.
Preferably, as shown in figure 4, the driving groove 121 is semi-spherical grooves, convenient for the convex with tripping lever 5
Arcuate structure cooperation.The operating mechanism includes being pivoted on the intracorporal substrate 6 of shell, and substrate is connect by connecting rod with handle,
Contact support, tripping, tripping lever 5 are rotatably installed on substrate, and tripping and tripping lever 5 are snap-fitted, and moving contact 3 passes through
Installation spring is fixed on contact and supports, the driving groove 121 of 12 end of mandril hits arcuate structure raised on tripping lever 5
Releasing tripping and tripping, lever 5 is snap-fitted that operating mechanism is made to thread off.Certainly, operating mechanism can also be using other structures.
As shown in Figure 1, the utility model breaker, in failure electric current, on the right side of 12 phase of mandril of magnetictrip 1
The top rod driving portion 120 of ejection, mandril 12 drives operating mechanism tripping, top rod driving portion 120 and tripping thick stick by tripping lever 5
When bar 5 contacts, driving 121 holding of groove in top rod driving portion 120 guarantees on the arcuate structure of the convex of tripping lever 5
The collection of tripping lever 5 stress point, which neutralizes, to be stablized.
As illustrated in fig. 1 and 2, the static contact 2 includes stationary contact bridge 20 and the stationary contact 21 being arranged on the right side of stationary contact bridge 20,
The right side of stationary contact bridge 20 is equipped with buffer spring 4, and 4 right end of buffer spring is connected with stationary contact bridge 20, left end and 100 phase of circuit breaker housing
Even.
Preferably, as shown in Fig. 2, on the left of the stationary contact bridge 20 be equipped with spring mounting groove 40,40 right end of spring mounting groove with
It is equipped between stationary contact bridge 20 and hides gap 41, buffer spring 4 is arranged in spring mounting groove 40,4 right end of buffer spring and stationary contact
Bridge 20 is connected, and left end is connected with the left end of spring mounting groove 40.
Preferably, as shown in Fig. 2, the spring mounting groove 40 is oppositely arranged with stationary contact 21.
Existing miniature circuit breaker, static contact is without impact mitigation measure when dynamic and static contact, due to machinery when the two contacts
Shock causes moving contact to bounce, and the gap between dynamic/static contact can generate electric arc, and arc temperature is up to 3000 DEG C~6000
DEG C, contact burning is caused, product service life and reliability of operation are influenced.
The utility model breaker, when moving contact 3 and static contact 2 are closed, since moving contact 3 is for static contact 2
Impact force makes to be subjected to displacement on the left of 2 phase of static contact, and buffer spring 4 is compressed, and is avoided because between moving contact 3 and static contact 2
Hard contact, in the two closure, moving contact 3 is bounced the case where generating high-voltage arc generation, to be conducive to extend static contact 2
With the service life of moving contact 3.
As shown in Fig. 2, the moving contact 3 includes the dynamic movable contact for touching bridge and being arranged on the left of dynamic touching bridge lower end.
Existing miniature circuit breaker, dynamic touching bridge are designed for linear type, in order to avoid the internal structure of breaker, are needed dynamic
Contact top position setting evacuation notch 32, to cause the problem of dynamic touching bridge current-carrying capacity reduction, ability of anti-deformation deficiency.
Preferably, arc-shaped protrusions 31 are equipped with as shown in Fig. 2, being located above movable contact on the right side of the dynamic touching bridge, arc-shaped protrusions
31 are oppositely arranged with evacuation notch 32, to increase the current-carrying capacity and non-deformability of dynamic touching bridge.
Preferably, the dynamic touching bridge lower end is equipped with contact mounting groove, is equipped with silver movable contact in the mounting groove of contact.
Existing miniature circuit breaker, moving contact are directly stamped to form using copper sheet, and copper sheet fusing point is lower, the energy of resistance to electrical arc erosion
Power is insufficient, and copper sheet moving contact is directly contacted with static contact, and contact resistance is larger.
The moving contact of the utility model, silver movable contact are significantly reduced the contact resistance of moving contact and static contact.
As shown in Figure 1, the utility model breaker further includes arc-chutes, connecting terminal, thermal release device, arc-chutes setting
Below magnetictrip 1, electromagnetic coil one end of magnetictrip 1 is connected with the connecting terminal in left side, the other end and stationary contact
First 2 are connected, and the connecting terminal on right side is connected with moving contact 3, thermal release device respectively.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (10)
1. a kind of breaker comprising magnetictrip (1) and operating mechanism, operating mechanism include tripping lever (5), and electromagnetism is de-
It detains device (1) and operating mechanism tripping is driven by tripping lever (5)；
It is characterized by: the magnetictrip (1) includes dynamic iron core (11) and the mandril (12) connecting with dynamic iron core (11), top
Bar (12) one end is equipped with top rod driving portion (120), and top rod driving portion (120) are equipped with the drive with tripping lever (5) driving cooperation
Dynamic groove (121).
2. breaker according to claim 1, it is characterised in that: the tripping lever (5) and driving groove (121) cooperation
Part be convex arcuate structure.
3. breaker according to claim 1, it is characterised in that: mandril mounting groove is arranged in described dynamic iron core (11) one end
(110), it is interference fitted in mandril (12) one end insertion mandril mounting groove (110) and with mandril mounting groove (110).
4. breaker according to claim 1, it is characterised in that: the magnetictrip (1) further includes coil brace
(10), electromagnetic coil, static iron core (13) and reaction spring (14), electromagnetic coil are wrapped in coil brace (10) outside, coil branch
Rack ventilating hole is set in the middle part of frame (10), and static iron core (13) is fixed at rack ventilating hole one end, and dynamic iron core (11) is slidably arranged in
Mandril mounting groove (110) are arranged in one end opposite with static iron core (13) of the other end of rack ventilating hole, dynamic iron core (11), mandril
(12) one end passes through in the middle part of static iron core (13) and is interference fitted with mandril mounting groove (110), mandril (12) and static iron core (13)
It is slidably matched, reaction spring (14) is set on mandril (12), and one end is connected with static iron core (13), the other end and dynamic iron core (11)
It is connected.
5. breaker according to claim 1, it is characterised in that: further include static contact (2), be connected with operating mechanism it is dynamic
Contact (3) and buffer spring (4), static contact (2) include the stationary contact of stationary contact bridge (20) and setting in stationary contact bridge (20) side
Point (21), buffer spring (4) are arranged in stationary contact bridge (20) other side, and buffer spring (4) one end is connected with stationary contact bridge (20), another
End is connected with circuit breaker housing (100), and when moving contact (3) and static contact (2) are closed, buffer spring (4) is compressed.
6. breaker according to claim 5, it is characterised in that: the circuit breaker housing (100) is installed equipped with spring
Slot (40), buffer spring (4) setting in the spring mounting groove (40), spring mounting groove (40) close to stationary contact bridge (20) one end with
Gap (41) are hidden in setting between stationary contact bridge (20).
7. breaker according to claim 5, it is characterised in that: the spring mounting groove (40) is arranged in stationary contact bridge (20)
Side and stationary contact (21) are opposite.
8. breaker according to claim 5, it is characterised in that: the moving contact (3) includes dynamic touching bridge and setting dynamic
The movable contact of bridge one end is touched, moves and arc-shaped protrusions (31) is set at movable contact in the middle part of touching bridge, arc-shaped protrusions (31) and movable contact
It is located at the two sides of dynamic touching bridge.
9. breaker according to claim 8, it is characterised in that: the dynamic touching bridge is additionally provided with evacuation notch (32), evacuation
The same side of dynamic touching bridge is arranged in notch (32) and movable contact, and evacuation notch (32) is oppositely arranged with arc-shaped protrusions (31).
10. breaker according to claim 5, it is characterised in that: the operating mechanism includes being pivoted in shell
Substrate (6), substrate connect by connecting rod with handle, contact support, tripping, thread off lever (5) be rotatably installed on substrate, and
Tripping and tripping lever (5) are snap-fitted, and moving contact (3) is fixed in contact support by installing spring, mandril (12) end
Driving groove (121) hit raised arcuate structure in tripping lever (5) and release tripping and tripping lever (5) are snap-fitted and make
Operating mechanism tripping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821652059.9U CN209104098U (en) | 2018-10-11 | 2018-10-11 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821652059.9U CN209104098U (en) | 2018-10-11 | 2018-10-11 | Breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209104098U true CN209104098U (en) | 2019-07-12 |
Family
ID=67154863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821652059.9U Active CN209104098U (en) | 2018-10-11 | 2018-10-11 | Breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209104098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584308A (en) * | 2020-03-23 | 2020-08-25 | 中国航天时代电子有限公司 | Replaceable contact device |
-
2018
- 2018-10-11 CN CN201821652059.9U patent/CN209104098U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584308A (en) * | 2020-03-23 | 2020-08-25 | 中国航天时代电子有限公司 | Replaceable contact device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |