CN209729852U - A kind of breaker and its trigger device - Google Patents
A kind of breaker and its trigger device Download PDFInfo
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- CN209729852U CN209729852U CN201920688352.9U CN201920688352U CN209729852U CN 209729852 U CN209729852 U CN 209729852U CN 201920688352 U CN201920688352 U CN 201920688352U CN 209729852 U CN209729852 U CN 209729852U
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- Prior art keywords
- arc
- electric arc
- trigger device
- contact
- shaped head
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Abstract
The utility model discloses a kind of trigger devices, including fairshaped contact body, contact body includes the arc-shaped head for contacting with static contact and the body portion for connecting with body, and the end of arc-shaped head is provided with the striking corner structure for elongating electric arc.Arc-shaped head is contacted with static contact generates electric arc, the essence of electric arc is a branch of high-temperature ionized gas, it will receive resistance when moving along contact body, set streamlined for contact body, the electric arc resistance suffered in contact body apparent motion is smaller, be conducive to electric arc in contact body surface fast transfer, reduce residence time of the electric arc in contact body, to reduce ablation of the electric arc to contact body, the end of arc-shaped head is provided with striking corner structure, electric arc can be drawn longer, be conducive to arc motion it is farther faster, be conducive to the quick extinguishing of electric arc, extend the service life of trigger device.The utility model additionally provide it is a kind of include above-mentioned trigger device breaker.
Description
Technical field
The utility model relates to power control technology fields, more specifically to a kind of trigger device.In addition, this
Utility model further relates to a kind of breaker including above-mentioned trigger device.
Background technique
The moving contact of existing miniature circuit breaker is copper current-conducting piece or welding silver point structure, generally there is apparent prominent (touching
Head) design, or when welding silver point, there is step structure outstanding.During disjunction high current, the electric arc of generation is in moving movement
In the process, it is easy to be detained on step or projective structure the longer time, residence time of the electric arc on moving contact is longer to touching
The ablation of head is more serious, and the moving contact service life just decays faster.
In conclusion how to extend the service life of moving contact, it is a problem to be solved by those skilled in the art.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of trigger devices with long service life.
The another object of the utility model is to provide a kind of breaker including above-mentioned trigger device.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of trigger device of breaker, including fairshaped contact body, the contact body include for it is quiet
The arc-shaped head of contact and body portion for connecting with body, the end of the arc-shaped head are provided with for by electric arc
The striking corner structure of elongation.
Preferably, the arc-shaped head include arc convex portion for being connect with the static contact and with the arc
Interconnecting piece that lug boss connects, for connecting with the body portion, the width in the arc convex portion are greater than the interconnecting piece
Width.
Preferably, the inner fovea part for avoiding interfering with the static contact is provided with above the arc-shaped head.
Preferably, the inner fovea part is arc groove.
Preferably, the striking corner structure is the fillet that central angle is 30 °~60 °.
Preferably, the front setting in the body portion is fluted, and the back side in the body portion is provided with concave station, the groove, institute
Concave station is stated for matching connection with body.
A kind of breaker, including body are provided with trigger device described in any of the above-described on the body.
Preferably, static contact, the trigger device and the removable connection of the body are provided on the body, so that
The trigger device is contacted or is separated with the static contact.
Trigger device provided by the utility model, including fairshaped contact body, contact body include for it is quiet
The arc-shaped head of contact and body portion for connecting with body, the end of arc-shaped head is provided with for elongating electric arc
Striking corner structure.
Wherein, arc-shaped head is contacted with static contact generates electric arc, and the essence of electric arc is a branch of high-temperature ionized gas, along touching
Head ontology will receive resistance when mobile, set streamlined for contact body, i.e., the body form that surface is round and smooth, the lines flow smoothly,
The electric arc resistance suffered in contact body apparent motion is smaller, is conducive to electric arc in contact body surface fast transfer, subtracts
Few residence time of the electric arc in contact body, to reduce ablation of the electric arc to contact body, also, at the end of arc-shaped head
End be provided with striking corner structure, can by electric arc draw it is longer, be conducive to arc motion it is farther faster, be conducive to the fast of electric arc
Speed is extinguished, and further reduces residence time of the electric arc in contact body, extends the service life of trigger device.
The utility model additionally provide it is a kind of include above-mentioned trigger device breaker, long service life.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the positive structure schematic of trigger device provided by the utility model；
Fig. 2 is the structure schematic diagram of trigger device provided by the utility model；
Fig. 3 is the structural schematic diagram of breaker provided by the utility model.
In Fig. 1-3:
1 it is arc convex portion, 2 be striking corner structure, 3 be body portion, 4 be arc groove, 5 be groove, 6 be concave station, 7 is quiet
Contact.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The core of the utility model is to provide a kind of trigger device with long service life.Another core of the utility model
It is to provide a kind of breaker including above-mentioned trigger device.
Fig. 1~3 is please referred to, Fig. 1 is the positive structure schematic of trigger device provided by the utility model；Fig. 2 is
The structure schematic diagram of trigger device provided by the utility model；Fig. 3 is breaker provided by the utility model
Structural schematic diagram.
The trigger device of breaker provided by the utility model, including fairshaped contact body, contact body packet
The arc-shaped head for contacting with static contact 7 and the body portion 3 for connecting with body are included, the end setting of arc-shaped head is useful
In the striking corner structure 2 for elongating electric arc.
Wherein, contact body is streamlined, streamlined to specifically refer to be that air-flow is not clearly separated, surface is justified at surface
The body form sliding, the lines flow smoothly, when arc-shaped head is contacted with static contact 7, the circuit of breaker is connected to, and generates electric current,
And electric arc is formed between arc-shaped head and static contact 7, and electric arc will be conducted along contact body to arc-chutes, arc extinguishing is carried out, and
The essence of electric arc is a branch of high-temperature ionized gas, will will receive the resistance such as barrier force, frictional force when electric arc is moved along contact body
Power sets streamlined for contact body, can effectively reduce electric arc suffered resistance when moving.
It should be noted that arc-shaped head is generally an integral structure with body portion 3, it is easy to process, and structure is simple, when
So, can also be fixedly connected by modes such as welding, and body portion 3 is fixed on the body of breaker, can by bolt or
Card slot connection, it is convenient for disassembly and assembly, facilitate user to replace or safeguard contact body.
The end of arc-shaped head is provided with striking corner structure 2, striking corner structure 2 is for elongating electric arc, thus striking
The outer rim of corner structure 2 is generally the biggish camber line of radian, and specific radian size is not specifically limited herein, and user can be according to reality
Border situation is selected.
Trigger device provided by the utility model sets streamlined for contact body, and electric arc is on contact body surface
Suffered resistance is smaller when movement, is conducive to electric arc in contact body surface fast transfer, reduces electric arc in contact body
Residence time, to reduce ablation of the electric arc to contact body, also, the end of arc-shaped head is provided with striking corner structure
2, can by electric arc draw it is longer, be conducive to arc motion it is farther faster, be conducive to the quick extinguishing of electric arc, be further reduced
Residence time of the electric arc in contact body, extend the service life of trigger device.
In a kind of specific embodiment about arc-shaped head, arc-shaped head includes the arc for connecting with static contact 7
Shape lug boss 1 and interconnecting piece connect with arc convex portion 1, for connecting with body portion 3, the width in arc convex portion 1 are big
In the width of interconnecting piece.
Wherein, the width in arc convex portion 1 is set greater than to the width of interconnecting piece, is to increase arc convex portion 1
With the contact area of static contact 7, prevent arc convex portion 1 from generated heat because of electric arc with static contact 7 seriously and due to excessively thermally-induced
Calcination phenomenon, by the width of interconnecting piece be arranged it is relatively small also can material saving, reduce cost, can be on static contact 7
The recessed portion to match with arc convex portion 1 is set, to guarantee that static contact 7 and arc convex portion 1 have enough contacts area,
Arc convex portion 1 and interconnecting piece generally use integral structure, and interconnecting piece can be arc panel body, need to cooperate contact body
It is streamlined, to reduce resistance suffered when electric arc passes through.
In order to guarantee that static contact 7 can be worked normally with trigger device, in this embodiment, arc-shaped head
Top is provided with the inner fovea part for avoiding interfering with static contact 7.
It is understood that the position that trigger device is contacted with static contact 7 is arc-shaped head, electric arc is on arc-shaped head
It generates, when in order to avoid arc-shaped head and 7 contact closure of static contact, the contact body and static contact 7 of the top of arc-shaped head are sent out
Accident occurs because electric clearance is too small for raw interference contact, and inner fovea part is arranged in the top of arc-shaped head, to increase arc-shaped head
Top contact body and the distance between static contact 7, it should be noted that electric clearance refers in two conductive parts
Between or conductive parts and equipment protection interface between the most short space length that measures.Guaranteeing that electric property is stable and pacifies
In the case where complete, the shortest distance of insulation is able to achieve by air, electric clearance is too small, and short circuit can occur.
Preferably, inner fovea part is arc groove 4, and the radian of arc groove 4 should not be too large, excessive, be will increase needed for electric arc
The specific radian size user of mobile distance, arc groove 4 can select according to the actual situation, not do specific limit herein
Fixed, certainly, inner fovea part may be other structures, such as be open.
In a kind of specific embodiment about striking corner structure 2, striking corner structure 2 is that central angle is 30 °~60 °
Fillet.Wherein, the effect of striking corner structure 2 seeks to arc-shaped head, static contact 7 the generated electricity in disjunction short circuit current
Arc is rapidly introduced into arc-chutes, and generates metering function in the process, protects trigger device, static contact 7, keeps it few by scorching hot
The damage of electric arc.The specific structure size of striking corner structure 2 is not limited to aforesaid way, and user can select according to the actual situation
Select optimal structure size.
Trigger device provided by the utility model needs to be fixed on the body of circuit breaker, in present embodiment
In, the front setting fluted 5 in body portion 3, the back side in body portion 3 is provided with concave station 6, and groove 5, concave station 6 are for matching company with body
It connects.
The structure agreed with it is understood that needs setting and concave station 6, groove 5 in body portion 3 on body match,
To fix trigger device, connected by groove 5, concave station 6, installation and removal are convenient, and certainly, body portion 3 can also be adopted with body
With other connection types, such as the connection types such as weld, be bolted.
The utility model additionally provides a kind of breaker, including body, and above-mentioned trigger device is provided on body.Its
In, breaker is the electric current referred to close, carry and cut-off under normal loop condition and can close, hold before the deadline
Carry and cut-off the switching device of the electric current under abnormal loop condition.Breaker can be used to distribute electric energy, infrequently start asynchronous
Motor protects the implementations such as power circuit and motor, when serious overload or short circuit and the failures such as under-voltage occurs in they
When can automatic shutdown circuit, function is equivalent to Fuse switch and crosses the combination of underheat relay etc..And in disjunction event
Change components are not needed after barrier electric current generally.
Breaker is generally made of contact system, arc quenching system, operating mechanism, buckle releaser, body etc..When short circuit, greatly
The magnetic field of (general 10 to 12 times) of electric current generations overcomes reaction spring, and buckle releaser pull operation mechanism action switchs instantaneous tripping.
When the load, electric current becomes larger, calorific value aggravation, and (electric current is bigger, movement for pushing mechanism movement to a certain extent for bi-metal plate deformed
Time is shorter).
Static contact 7 is provided on the basis of above-mentioned specific embodiment, on body, trigger device and body are removable
Connection, so that trigger device is contacted or separated with static contact 7.
When combined floodgate, trigger device is contacted with static contact 7；When separating brake, trigger device is separated with static contact 7, moves touching
Electric arc is generated between head device and static contact 7, with the movement of trigger device, electric arc is constantly elongated, and is transported on its surface
Dynamic, the electric arc that static contact 7 and trigger device generate is transmitted to arc-chutes by the conductive sheet on arc-chutes both sides, when electric arc separates
It when to certain position, and enters in arc-chutes, is realized by elongation, transfer, arc-chute (arc-extinguish chamber) effect of electric arc
Final arc extinguishing.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Breaker provided by the utility model and trigger device are described in detail above.It is used herein
Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help
Understand the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, In
Under the premise of not departing from the utility model principle, several improvements and modifications can be made to this utility model, these improve and
Modification is also fallen into the protection scope of the utility model claims.
Claims (8)
1. a kind of trigger device of breaker, which is characterized in that including fairshaped contact body, the contact body includes
Arc-shaped head for contacting with static contact (7) and the body portion (3) for connecting with body, the end of the arc-shaped head is set
It is equipped with the striking corner structure (2) for elongating electric arc.
2. trigger device according to claim 1, which is characterized in that the arc-shaped head include for the stationary contact
Arc convex portion (1) of head (7) connection and connect with the arc convex portion (1), be used to connect with the body portion (3)
Interconnecting piece, the width of the arc convex portion (1) are greater than the width of the interconnecting piece.
3. trigger device according to claim 2, which is characterized in that be provided with above the arc-shaped head for keeping away
Exempt from the inner fovea part interfered with the static contact (7).
4. trigger device according to claim 3, which is characterized in that the inner fovea part is arc groove (4).
5. trigger device according to claim 1, which is characterized in that it is 30 ° that the striking corner structure (2), which is central angle,
~60 ° of fillet.
6. trigger device according to any one of claims 1 to 5, which is characterized in that the front setting of the body portion (3)
The back side of fluted (5), the body portion (3) is provided with concave station (6), and the groove (5), the concave station (6) are used for and body
With connection.
7. a kind of breaker, which is characterized in that including body, it is described dynamic that any one of claim 1 to 6 is provided on the body
Contact apparatus.
8. breaker according to claim 7, which is characterized in that be provided on the body static contact (7), the dynamic touching
Head device and the removable connection of the body, so that the trigger device is contacted or separated with the static contact (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920688352.9U CN209729852U (en) | 2019-05-14 | 2019-05-14 | A kind of breaker and its trigger device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920688352.9U CN209729852U (en) | 2019-05-14 | 2019-05-14 | A kind of breaker and its trigger device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209729852U true CN209729852U (en) | 2019-12-03 |
Family
ID=68674134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920688352.9U Active CN209729852U (en) | 2019-05-14 | 2019-05-14 | A kind of breaker and its trigger device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209729852U (en) |
-
2019
- 2019-05-14 CN CN201920688352.9U patent/CN209729852U/en active Active
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