CN203445015U - Instantaneous breaking mechanism applied to control and protection switch - Google Patents
Instantaneous breaking mechanism applied to control and protection switch Download PDFInfo
- Publication number
- CN203445015U CN203445015U CN201320524094.3U CN201320524094U CN203445015U CN 203445015 U CN203445015 U CN 203445015U CN 201320524094 U CN201320524094 U CN 201320524094U CN 203445015 U CN203445015 U CN 203445015U
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- instantaneous
- control
- contact
- switch
- bar
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Abstract
The utility model discloses an instantaneous breaking mechanism applied to a control and protection switch. The instantaneous breaking mechanism applied to the control and protection switch comprises a work portion and a control portion. The work portion is arranged on the control portion, the control portion comprises a contact guide rod, the work portion comprises a command rod, an iron core and a swing rod, the command rod is movably connected with the contact guide rod, the swing rod is movably connected with the command rod, and the iron core is arranged on the command rod. The beneficial effects of the instantaneous breaking mechanism are mainly reflected in that an electromagnetic attraction system and an instantaneous protection system are successfully and completely independent, and work independently without mutual interference. When the circuit generates a short circuit current, the instantaneous breaking mechanism pushes a contact by self energy, and repulses a major loop rapidly. The breaking process is direct and rapid, loading equipment and the contact of the switch are well protected, the performance of the switch is improved, and the service life of the switch is prolonged.
Description
Technical field
The utility model relates to a kind of instantaneous disjunction mechanism for control and protective switch, belongs to electric equipment technical field.
Background technology
Control and protective switch is a kind of intelligent device for switching that the functions such as circuit breaker, contactor, thermal relay are rolled into one.Be mainly used in the occasion that need to protect motor.Major function has: short-circuit protection, open phase protection, rotation-clogging protection, overcurrent protection, overvoltage/undervoltage protection and earth leakage protective.The structure of this class switch on market mainly comprises following components: major loop contact terminal system, electromagnetism adhesive system, fault trip system, signal acquiring and processing system.The normal break-make of switch is by the adhesive of electromagnet and has discharged.While there is short circuit current in running, instantaneous coil produces enough large magnetic field and pulls iron core to make mechanism be transformed into dropout position, and the driving lever in mechanism disconnects the contact of electromagnetism pull-in winding and makes its power-off, and electromagnet discharges, and major loop contact terminal is disconnected.The shortcoming of this mechanism is, occurs to major loop disconnect from short circuit current, and middle link is many, and the time is long.Because very large of short circuit current, longer break-time will produce very large damage to contact, even causes the adhesion of contact.
Utility model content
The purpose of this utility model is to solve the problem of control and protective switch long period disjunction meeting damage contact in prior art, provides the instantaneous disjunction mechanism that a kind of control and protective switch is used to solve the problems referred to above.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of instantaneous disjunction mechanism for control and protective switch; comprise: control part and operate portions; described operate portions is arranged on control part; described control part comprises contact guide rod; described operate portions comprises commander bar, iron core and fork; described commander's bar is flexibly connected with contact guide rod, and described fork is flexibly connected with commander's bar, and described iron core is arranged on commander's bar.
As preferred version, described control part also comprises touch spring, and described touch spring is arranged on contact guide rod bottom.
As preferred version, on described iron core, be socketed with instantaneous coil.
As preferred version, on described commander's bar, be also provided with extension spring.
The beneficial effects of the utility model are mainly reflected in: successfully that electromagnetism adhesive system and instantaneous protection system is completely independent, work alone, and non-interference.While being short-circuited electric current in circuit, the energy of the body of utilization promotes contact, and major loop is scolded out rapidly.Breaking course is directly rapid, has well protected the contact of load equipment and switch, has improved the performance of switch, has extended the useful life of switch.
Accompanying drawing explanation
Fig. 1 is the utility model at current ratio structural representation hour;
Fig. 2 is the structural representation of the utility model when current ratio is larger.
Embodiment
For making that architectural feature of the present utility model and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
As shown in Figure 1, a kind of instantaneous disjunction mechanism for control and protective switch, comprise: control part and operate portions, described operate portions is arranged on control part, described control part comprises the housing 1 of controlling with protective circuit, housing 1 is provided with arc-extinguish chamber 14, in housing 1, be provided with fixed contact 11, moving contact 12 and contact guide rod 13, moving contact 12 is socketed on contact guide rod 13, fixed contact 11 cover contact head guide rod 13 peripheries, contact guide rod 13 bottoms are also provided with touch spring 15, described operate portions comprises commander's bar 21, fork 22 and iron core 23, described commander's bar 21 is flexibly connected with contact guide rod 13, described fork 22 is flexibly connected with commander's bar 21, the iron core 23 that is socketed with instantaneous coil 231 is arranged on commander's bar 21, instantaneous coil will promote iron core motion when electromagnetic field is enough strong, when iron core promotes to command bar to rotate to an angle, command bar can be with moving contact guide rod to press down and make contact separately, when commander's bar swings enough angles, the hasp of commander's bar and fork will be thrown off, fork swings an angle, making the end of fork push down commander's bar makes contact remain on the state of disjunction.
As preferred version, on described commander's bar 21, be also provided with extension spring 211.
When current ratio hour, as shown in Figure 1, the electric current flowing through on instantaneous coil 231 is smaller in mechanism, so the electromagnetic field intensity producing is not enough to promote iron core 23, commander's bar 21, under the effect of extension spring 211, does not form downforce to contact guide rod 13.At this moment the impact of deciliter Bu Shouben mechanism of contact.
When being short-circuited fault, whole mechanism as shown in Figure 2, electric current can be considerably beyond normal current value, and the powerful electromagnetic field that instantaneous coil 231 produces promotes rapidly iron core 23, and commander's bar 21 is depressed contact guide rod 13 under the promotion of iron core 23 separates dynamic/static contact fast.When commander's bar 23 presses down after certain stroke, the hasp that fork 22 and commander's bar 23 form will be thrown off, and fork 22 swings a low-angle, withstands commander's bar 23, makes contact remain on state separately.
The beneficial effects of the utility model are mainly reflected in: successfully that electromagnetism adhesive system and instantaneous protection system is completely independent, work alone, and non-interference.While being short-circuited electric current in circuit, the energy of the body of utilization promotes contact, and major loop is scolded out rapidly.Breaking course is directly rapid, has well protected the contact of load equipment and switch, has improved the performance of switch, has extended the useful life of switch.
In sum, it is only preferred embodiment of the present utility model, not be used for limiting the scope that the utility model is implemented, all equalizations of doing according to the shape described in the utility model claim scope, structure, feature and spirit change and modify, and all should be included within the scope of claim of the present utility model.
Claims (4)
1. the instantaneous disjunction mechanism for control and protective switch; comprise: control part and operate portions; described operate portions is arranged on control part; described control part comprises contact guide rod; described operate portions comprises commander bar, iron core and fork; described commander's bar is flexibly connected with contact guide rod, and described fork is flexibly connected with commander's bar, and described iron core is arranged on commander's bar.
2. the instantaneous disjunction mechanism for control and protective switch according to claim 1, is characterized in that, described control part also comprises touch spring, and described touch spring is arranged on contact guide rod bottom.
3. the instantaneous disjunction mechanism for control and protective switch according to claim 1, is characterized in that, is socketed with instantaneous coil on described iron core.
4. the instantaneous disjunction mechanism for control and protective switch according to claim 1, is characterized in that, on described commander's bar, is also provided with extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320524094.3U CN203445015U (en) | 2013-08-26 | 2013-08-26 | Instantaneous breaking mechanism applied to control and protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320524094.3U CN203445015U (en) | 2013-08-26 | 2013-08-26 | Instantaneous breaking mechanism applied to control and protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445015U true CN203445015U (en) | 2014-02-19 |
Family
ID=50096041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320524094.3U Expired - Fee Related CN203445015U (en) | 2013-08-26 | 2013-08-26 | Instantaneous breaking mechanism applied to control and protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445015U (en) |
-
2013
- 2013-08-26 CN CN201320524094.3U patent/CN203445015U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20180826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |