CN210866068U - Arc striking contact for direct current contactor - Google Patents
Arc striking contact for direct current contactor Download PDFInfo
- Publication number
- CN210866068U CN210866068U CN201921145908.6U CN201921145908U CN210866068U CN 210866068 U CN210866068 U CN 210866068U CN 201921145908 U CN201921145908 U CN 201921145908U CN 210866068 U CN210866068 U CN 210866068U
- Authority
- CN
- China
- Prior art keywords
- contact
- striking
- arc
- fixed
- moving
- 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
Links
Images
Abstract
The utility model provides an arc striking contact for a direct current contactor, which comprises a bracket or a ceramic cavity, an arc striking fixed contact mechanism, a moving contact mechanism, a bottom plate, a main fixed contact mechanism and a through groove, wherein the bottom plate is fixed on the bracket through bolts or is brazed below the ceramic cavity; the through groove is formed in the middle of the bottom plate; the main fixed contact mechanism is fixed on the bracket through a bolt or is brazed above the inner side of the ceramic cavity; the arc striking fixed contact mechanisms are fixed on the left side and the right side above the inner side of the ceramic cavity through bolts or are brazed; the utility model discloses well striking moving contact and striking are decided the distance between the contact and are less than the distance between initiative contact and the main contact mechanism of deciding, striking moving contact and striking decide the contact and fit the initiative contact earlier and decide contact mechanism with the main when realizing closing, strike the arc moving contact and strike and decide breaking in initiative contact and main contact mechanism behind the contact during disconnection, the effectual phenomenon that appears gluing or lead to contact resistance big between contact mechanism is decided to initiative contact and the main contact mechanism that prevents.
Description
Technical Field
The utility model belongs to the technical field of direct current contactor, especially, relate to an arcing contact for direct current contactor.
Background
The dc contactor is a contactor used in a dc circuit, and is mainly used for controlling a dc circuit, such as a main circuit, a control circuit, an excitation circuit, and the like, and an iron core of the dc contactor is different from an ac contactor in that it does not have an eddy current, and thus is generally made into a circular shape by using mild steel or industrial pure iron.
The existing high-voltage direct-current contactor generates electric arcs in the contact moment, the electric arcs can directly hit the main contacts, the main contacts are easily burnt, and therefore the main contacts are adhered or the main contacts are prone to fatal defects of large contact resistance and the like, the temperature of the electric arcs is extremely high, burns are caused at the main contacts, the service life of the direct-current contactor is affected, the requirements on main contact materials are high, and the cost of the main contacts is high.
Therefore, the arc striking contact for the dc contactor of the utility model is very necessary.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an arcing contact for direct current contactor to solve current high voltage direct current contactor and produce electric arc in the twinkling of an eye of contact, electric arc can directly be beaten on main contact, burn main contact very easily, thereby arouse between the main contact glutinous or lead to fatal shortcoming such as contact resistance is big, the temperature of electric arc is high, cause the burn in main contact department, influence direct current contactor's life, requirement to main contact material is higher, and the higher problem of cost of main contact.
The utility model provides an arc striking contact for a direct current contactor, which comprises a bracket or a ceramic cavity (1), an arc striking fixed contact mechanism, a moving contact mechanism, a bottom plate (4), a main fixed contact mechanism (5) and a through groove, wherein the bottom plate (4) is fixed on the bracket or brazed below the ceramic cavity (1) through bolts; the through groove is formed in the middle of the bottom plate (4); the main fixed contact mechanism (5) is fixed on the bracket through a bolt or is brazed above the inner side of the ceramic cavity (1); the arc striking fixed contact mechanisms are fixed on the left side and the right side above the inner side of the ceramic cavity (1) through bolts or are brazed; the lower end of the moving contact mechanism is clamped in the through groove and is positioned above the bottom plate (4), and the lower end of the moving contact mechanism penetrates through the lower part of the bottom plate (4).
The moving contact mechanism comprises a driving contact (3), a diversion moving contact support plate (31), a moving iron core (32), an arc-striking moving contact (33) and a spring (36);
the upper end of the movable iron core (32) is fixed in the middle position below the diversion moving contact support plate (31), and the lower end of the movable iron core is clamped in the through groove and penetrates below the bottom plate (4); the upper end of the spring (36) is fixed below the diversion moving contact supporting plate (31) through a pressing plate bolt and is positioned on the outer side of the moving iron core (32);
the active contact (3) is welded in the middle position above the flow guide moving contact support plate (31);
the arc striking moving contact (33) is welded on the left side end and the right side end of the flow guiding moving contact supporting plate (31).
Preferably, the upper end of the active contact (3) adopts an arc striking arc shape and is aligned with the main fixed contact mechanism (5);
the upper ends of the 2 arc-striking moving contacts (33) are arc-shaped and aligned with the arc-striking fixed contact (24), and the distance between the arc-striking moving contacts (33) and the arc-striking fixed contact (24) is smaller than the distance between the active contact (3) and the main fixed contact mechanism (5).
Preferably, the arc striking and fixed contact mechanism comprises a flow guide fixing plate (21), the flow guide fixing plate (21) and an arc striking and fixed contact (24), and the flow guide fixing plate (21) is fixed on the contact mechanism through a bolt; the flow guide fixing plate (21) is arranged on the main fixed contact mechanism (5); the arc striking fixed contact (24) is welded below the flow guide fixing plate (21).
Preferably, the upper side and the lower side of the diversion fixing plate (21) are provided with threaded holes; the diversion fixing plate (21) is rectangular, convex or T-shaped; the arc striking fixed contact (24) is conical, the diameter of the upper end of the arc striking fixed contact is larger than that of the lower end of the arc striking fixed contact, and the size of the upper end of the arc striking fixed contact is matched with that of the flow guide fixing plate (21).
Preferably, the bracket or the ceramic cavity (1) is in an inverted U shape; the through groove is cylindrical; the size of the bottom plate (4) is matched with that of the support or the ceramic cavity (1).
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses well striking moving contact (33) and striking decide the distance between contact (24) and be less than active contact (3) and the main distance of deciding between contact mechanism (5), striking moving contact 33 and striking decide contact 24 and fit earlier in active contact 3 and main contact mechanism 5 of deciding when realizing the closure, striking moving contact 33 and striking decide contact 24 during the disconnection and break off in active contact 3 and main contact mechanism 5 of deciding behind contact, the effectual phenomenon that gluing appears or lead to contact resistance big between active contact 3 and the main contact mechanism 5 of deciding of preventing.
The utility model discloses well striking is decided setting of contact 24, and the electric arc of production is beaten on striking moving contact 33 and striking is decided contact 24, avoids deciding at initiative contact 3 and owner and produces high temperature between contact mechanism 5, and the effectual phenomenon that prevents that contact mechanism 5 from appearing burning is decided to initiative contact 3 and owner, improves direct current contactor's life.
The utility model discloses a setting of active contact 3, electric arc are beaten on striking moving contact 33 and striking fixed contact 24, and active contact 3 can reduce the operation requirement of 3 materials of active contact in being in a relatively safe steady environment, reduces active contact 3's manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-bracket or ceramic cavity, 21-diversion fixed plate, 24-arc striking fixed contact, 3-active contact, 31-diversion moving contact support plate, 32-moving iron core, 33-arc striking moving contact, 36-spring, 4-bottom plate and 5-main fixed contact mechanism.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
as shown in figure 1
The utility model provides an arc striking contact for a direct current contactor, which comprises a bracket or a ceramic cavity 1, an arc striking fixed contact mechanism, a moving contact mechanism, a bottom plate 4, a main fixed contact mechanism 5 and a through groove, wherein the bottom plate 4 is fixed on the bracket through bolts or is brazed below the ceramic cavity 1; the through groove is formed in the middle of the bottom plate 4; the main fixed contact mechanism 5 is fixed on the bracket through a bolt or is brazed above the inner side of the ceramic cavity 1; the arc striking fixed contact mechanisms are fixed on the left side and the right side above the inner side of the ceramic cavity 1 through bolts or are brazed; the lower end of the moving contact mechanism is clamped in the through groove and is positioned above the bottom plate 4, and the lower end of the moving contact mechanism penetrates through the lower part of the bottom plate 4.
The arc striking and contact fixing mechanism comprises a flow guide fixing plate 21, a flow guide fixing plate 21 and an arc striking and contact fixing head 24, wherein the flow guide fixing plate 21 is fixed on the contact mechanism 2 through a bolt; the installation flow guide fixing plate 21 is installed on the main fixed contact mechanism 5; the arc striking fixed contact 24 is welded below the flow guide fixing plate 21.
Wherein, the upper and lower sides of the diversion fixing plate 21 are provided with threaded holes; the diversion fixing plate 21 is rectangular, convex or T-shaped; the arc striking fixed contact 24 is conical, the diameter of the upper end of the arc striking fixed contact is larger than that of the lower end of the arc striking fixed contact, and the size of the upper end of the arc striking fixed contact is matched with that of the flow guide fixing plate 21.
Wherein, the bracket or the ceramic cavity 1 adopts an inverted U shape; the through groove is cylindrical; the size of the bottom plate 4 is matched with that of the bracket or the ceramic cavity 1.
The moving contact mechanism comprises a driving contact 3, a flow guiding moving contact support plate 31, a moving iron core 32, an arc striking moving contact 33 and a spring 36;
the upper end of the movable iron core 32 is fixed in the middle position below the diversion moving contact support plate 31, and the lower end of the movable iron core is clamped in the through groove and penetrates below the bottom plate 4; the upper end of the spring 36 is fixed below the diversion moving contact supporting plate 31 through a pressing plate bolt and is positioned on the outer side of the moving iron core 32; the active contact 3 is welded at the middle position above the flow guide moving contact support plate 31; the arc striking moving contact 33 is welded on the left and right sides of the flow guiding moving contact supporting plate 31.
The upper end of the active contact 3 adopts an arc striking arc shape and is aligned with the main fixed contact mechanism 5; the upper ends of the 2 arc-striking moving contacts 33 are arc-shaped and aligned with the arc-striking fixed contact 24, and the distance between the arc-striking moving contacts 33 and the arc-striking fixed contact 24 is smaller than the distance between the active contact 3 and the main fixed contact mechanism 5.
Principle of operation
In the utility model, the distance between the arc striking moving contact 33 and the arc striking fixed contact 24 is smaller than the distance between the active contact 3 and the main fixed contact mechanism 5, when the movable iron core 32 pushes the active contact 3 to move upwards, the arc striking moving contact 33 and the arc striking fixed contact 24 are firstly contacted and closed to play the role of arc striking, and when the active contact mechanism 3 is contacted with the main fixed contact mechanism 5, electric arc can not be generated; when the direct current contactor is disconnected, when the movable iron core 32 drives the active contact 3 to move downwards, the active contact 3 is firstly disconnected with the main fixed contact mechanism 5, the arc striking movable contact 33 is finally disconnected with the arc striking fixed contact 24 to play the role of striking an arc, the electric arc is prevented from directly striking on the main contact, the phenomenon that the active contact 3 is adhered to the main fixed contact mechanism 5 or the contact resistance is large is effectively prevented, the generated electric arc strikes on the arc striking movable contact 33 and the arc striking fixed contact 24, the high temperature is prevented from being generated between the active contact 3 and the main fixed contact mechanism 5, the burning phenomenon of the active contact 3 and the main fixed contact mechanism 5 is effectively prevented, the service life of the direct current contactor is prolonged, the electric arc strikes on the arc striking movable contact 33 and the arc striking fixed contact 24, and the active contact 3 is in a relatively safe and stable environment, the use requirement of the active contact 3 material can be reduced, and the production cost of the active contact 3 can be reduced.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (4)
1. An arcing contact for a dc contactor, comprising: the arc striking and fixed contact mechanism comprises a support or a ceramic cavity (1), an arc striking and fixed contact mechanism, a moving contact mechanism, a bottom plate (4), a main fixed contact mechanism (5) and a through groove, wherein the bottom plate (4) is fixed below the support or brazed below the ceramic cavity (1) through a bolt; the through groove is formed in the middle of the bottom plate (4); the main fixed contact mechanism (5) is fixed on the bracket through a bolt or is brazed above the inner side of the ceramic cavity (1); the arc striking fixed contact mechanisms are fixed on the left side and the right side above the inner side of the ceramic cavity (1) through bolts or are brazed; the lower end of the moving contact mechanism is clamped in the through groove and is positioned above the bottom plate (4), and the lower end of the moving contact mechanism penetrates below the bottom plate (4);
the moving contact mechanism comprises a driving contact (3), a diversion moving contact support plate (31), a moving iron core (32), an arc-striking moving contact (33) and a spring (36); the upper end of the movable iron core (32) is fixed in the middle position below the diversion moving contact support plate (31), and the lower end of the movable iron core is clamped in the through groove and penetrates below the bottom plate (4); the upper end of the spring (36) is fixed below the diversion moving contact supporting plate (31) through a pressing plate bolt and is positioned on the outer side of the moving iron core (32); the active contact (3) is welded in the middle position above the flow guide moving contact support plate (31); the arc striking moving contact (33) is welded on the left side end and the right side end of the flow guiding moving contact supporting plate (31);
the upper end of the active contact (3) adopts an arc striking arc shape and is aligned with the main fixed contact mechanism (5); the upper ends of the 2 arc-striking moving contacts (33) are arc-shaped and aligned with the arc-striking fixed contact (24), and the distance between the arc-striking moving contacts (33) and the arc-striking fixed contact (24) is smaller than the distance between the active contact (3) and the main fixed contact mechanism (5).
2. The arcing contact for a direct current contactor as recited in claim 1, wherein: the arc striking and contact fixing mechanism comprises a flow guide fixing plate (21), a flow guide fixing plate (21) and an arc striking and contact fixing head (24), wherein the flow guide fixing plate (21) is fixed on the contact mechanism through a bolt; the flow guide fixing plate (21) is arranged on the main fixed contact mechanism (5); the arc striking fixed contact (24) is welded below the flow guide fixing plate (21).
3. The arcing contact for a direct current contactor as recited in claim 2, wherein: the upper side and the lower side of the flow guide fixing plate (21) are provided with threaded holes; the diversion fixing plate (21) is rectangular, convex or T-shaped; the arc striking fixed contact (24) is conical, the diameter of the upper end of the arc striking fixed contact is larger than that of the lower end of the arc striking fixed contact, and the size of the upper end of the arc striking fixed contact is matched with that of the flow guide fixing plate (21).
4. The arcing contact for a direct current contactor as recited in claim 1, wherein: the bracket or the ceramic cavity (1) is in an inverted U shape; the through groove is cylindrical; the size of the bottom plate (4) is matched with that of the support or the ceramic cavity (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145908.6U CN210866068U (en) | 2019-07-22 | 2019-07-22 | Arc striking contact for direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145908.6U CN210866068U (en) | 2019-07-22 | 2019-07-22 | Arc striking contact for direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210866068U true CN210866068U (en) | 2020-06-26 |
Family
ID=71291899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921145908.6U Expired - Fee Related CN210866068U (en) | 2019-07-22 | 2019-07-22 | Arc striking contact for direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210866068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335783A (en) * | 2019-07-22 | 2019-10-15 | 浙江天继电气有限公司 | A kind of striking contact for D.C. contactor |
-
2019
- 2019-07-22 CN CN201921145908.6U patent/CN210866068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335783A (en) * | 2019-07-22 | 2019-10-15 | 浙江天继电气有限公司 | A kind of striking contact for D.C. contactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201261101Y (en) | Arc discharge type stud welding gun | |
| CN200941346Y (en) | Electromagnetic arc blower of a.c. electromagnetic contactor | |
| US4401863A (en) | Contact device for low voltage switch devices | |
| CN210866068U (en) | Arc striking contact for direct current contactor | |
| WO2017059821A1 (en) | Contact system and contactor comprising contact system | |
| CN110189963B (en) | Pneumatic-electric hybrid double-drive contactor | |
| CN103824736A (en) | Direct current breaker with magnetic quenching device | |
| CN202332742U (en) | Bipolar direct current contactor | |
| CN102436975B (en) | Bipolar DC contactor | |
| CN204720350U (en) | A kind of electromagnetic relay of magnet arc-control device | |
| CN202585232U (en) | Permanent magnet alternating current vacuum contactor | |
| CN204155859U (en) | A kind of two-way high-voltage DC contactor in parallel | |
| CN212811238U (en) | 10kV distribution lines attaches protection device | |
| CN217086482U (en) | Direct current contactor contact structure | |
| CN110335783A (en) | A kind of striking contact for D.C. contactor | |
| CN209822571U (en) | Electromagnetic relay | |
| CN210091988U (en) | High-voltage direct-current relay capable of prolonging service life of product | |
| CN114843159A (en) | Direct current breaker static contact device with non-polarity magnetic blow | |
| CN103700536A (en) | Spring energy storage mechanism for disconnecting switch | |
| CN201282065Y (en) | Permanent magnet AC vacuum contactor | |
| CN204144175U (en) | A kind of high-voltage DC contactor | |
| US3868473A (en) | Method and apparatus for monitoring the electrode support of an arc furnace | |
| CN205542575U (en) | Load switch | |
| CN202259056U (en) | High-voltage DC contactor | |
| CN111430188A (en) | High-power high-voltage direct-current contactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 Termination date: 20210722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |