CN201298504Y - Contact device of circuit breaker with auto-lock function - Google Patents
Contact device of circuit breaker with auto-lock function Download PDFInfo
- Publication number
- CN201298504Y CN201298504Y CNU2008201661213U CN200820166121U CN201298504Y CN 201298504 Y CN201298504 Y CN 201298504Y CN U2008201661213 U CNU2008201661213 U CN U2008201661213U CN 200820166121 U CN200820166121 U CN 200820166121U CN 201298504 Y CN201298504 Y CN 201298504Y
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- CN
- China
- Prior art keywords
- contact
- shaft
- contact body
- rotating shaft
- axle
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- 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 - Lifetime
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Abstract
A contact device of a circuit breaker with auto-lock function comprises a rotating shaft and a contact body; a contact point is arranged at the front part of the contact body; a contact shaft is fixedly mounted at the rear end of the contact body; the contact shaft is mounted in the rotating shaft; a resetting mechanism used for driving a contact to reset is arranged between the contact body and the rotating shaft; a positioning shaft is mounted in the rotating shaft above the rear end of the contact body; the positioning shaft is positioned in front of the contact shaft; a position limiter is arranged on the upper side at the rear end of the contact body; the position limiter is matched with the positioning shaft; a clamping groove is formed in the rotating shaft; the two ends of the contact shaft are mounted in the clamping groove in an up-and-down moving manner; a clamping stagnation block is arranged on the upper side at the rear end of the contact body; the clamping stagnation block takes the shape of an arc-shaped notch; the clamping stagnation block is positioned in the front of the position limiter; the positioning shaft is divided into 1/4 of a circle by taking axle center connecting line of the positioning shaft and the contact shaft as straight lines; and the contact position of the clamping stagnation block and the positioning shaft is 1/4 of the circle at the lowest part of the positioning shaft. The utility model effectively prevents the secondary contact among contacts, and improves the breaking capacity of the circuit breaker.
Description
Technical field
The utility model relates to the contact of breaker device.
Background technology
Low-voltage electrical apparatus is a crucial product in national product and the life, and the conveying and the distribution of electric energy played many-sided effect such as protection, control, almost be penetrated into all and use electrical domain, and be the important assurance of safety utilization of electric power.Low-voltage electrical apparatus is various in style, and is large in number and widely distributed, and structure is different, particularly enters after the nineties, and the social production requirement low-pressure electronic equipment product performance of develop rapidly is higher, volume is littler, internal mechanism is compact more.
At present, in order to improve the breaking capacity of circuit breaker, each big manufacturer becomes double-breakpoint structure with the contact design of circuit breaker one after another both at home and abroad, and the two components contact that breaks is promptly arranged.Improve product greatly and used amount silver-colored, copper, increased product cost, wasted material.
Existing breaker of plastic casing all is that the dropout by transmission mechanism makes the contact system disjunction when doing big electric current disjunction test, feeding big electric current in a flash, can produce powerful electric power between dynamic and static contact, this electric power is scolded out dynamic and static contact by force, because moving contact all is to lean on the active force of spring that it is resetted, scolding when reaching the guide vane end stop position when contact can resilience, just might cause dynamic and static contact secondary contact, serious scaling loss circuit breaker if fail to finish disjunction in the mechanism of this cycle inner breaker.
The utility model content
Can not prevent the secondary contact between the contact, the deficiency of breaking capacity difference for what overcome existing contact of breaker, the utility model provides a kind of can effectively prevent the contact of the secondary between the contact, improve the contact of breaker device of band auto-lock function of the breaking capacity of circuit breaker.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of contact of breaker device with auto-lock function, comprise rotating shaft and contact body, the front portion of described contact body is provided with the contact, the rear portion of described contact body is installed with the contact axle, described contact axle is installed in the rotating shaft, be provided with between described contact body and the rotating shaft and be used to drive the resetting device that contact resets, installing and locating axle in the rotating shaft above described contact body rear portion, described locating shaft is positioned at the place ahead of contact axle, described contact body rear portion upside is provided with guide vane end stop, described guide vane end stop is positioned at the top of described locating shaft, in described rotating shaft, be provided with draw-in groove, the two ends of described contact axle can be installed in the described draw-in groove up or down, upside also is provided with the clamping stagnation piece at described contact body rear portion, the curved indentations of described clamping stagnation piece, and described clamping stagnation piece is positioned at the place ahead of described guide vane end stop, with the axial connecting line of locating shaft and contact axle is that straight line is divided 1/4 circle to locating shaft, and the contact position of described clamping stagnation piece and described locating shaft is 1/4 justifying of below of locating shaft.
As preferred a kind of scheme: described resetting device is extension spring, fixedly mounts bearing pin on the contact body at described contact axle rear portion, and described extension spring is installed between described locating shaft and bearing pin.
Technical conceive of the present utility model is: the function of self-locking contact: test under the big function of current in disjunction, the maximum break up location that is allowed to condition in a flash of scolding out at contact has an of short duration residence time, this point that disconnects is pinned, allow the mechanism of circuit breaker have sufficient time to make mechanism action to finish the disjunction of contact, be unlikely to the secondary resilience of contact.After mechanism threads off, rely on the resilient mounting on the circuit breaker lid again contact to be resetted.
Be subjected to contact up to be pushed away when electric power promotes at contact at the clamping stagnation piece of offering on the contact, the clamping stagnation piece is buckled into to the corresponding position of locating shaft, allow contact that an of short duration residence time is arranged in this position, allow mechanism have the enough time to finish the action of threading off.Effectively prevent the secondary contact between contact.
The beneficial effects of the utility model mainly show: 1, can effectively prevent the secondary contact between the contact; 2, improve the breaking capacity of circuit breaker; 3,, then have advantage simple in structure, good reliability, and, save noble metals such as a large amount of copper, silver owing to use the single contact structure with respect to double-breakpoint structure of the prior art.
Description of drawings
Fig. 1 is the structural representation of the contact of breaker device of band auto-lock function of the present utility model.
Fig. 2 is the scheme of installation of contact apparatus.
Fig. 3 is the schematic diagram of contact closure state.
Fig. 4 is the schematic diagram of contact intermediateness.
Fig. 5 is the schematic diagram of contact open mode.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 5, a kind of contact of breaker device with auto-lock function, comprise rotating shaft 1 and contact body 2, the front portion of described contact body 2 is provided with contact 3, the rear portion of described contact body 2 is installed with contact axle 4, described contact axle 4 is installed in the rotating shaft 1, be provided with between described contact body 2 and the rotating shaft 1 and be used to drive the resetting device that contact resets, installing and locating axle 5 in the rotating shaft above described contact body 2 rear portions, described locating shaft 5 is positioned at the place ahead of contact axle 4, described contact body 2 rear portion upsides are provided with guide vane end stop 6, described guide vane end stop 6 is positioned at described locating shaft 5 tops, in described rotating shaft 1, be provided with draw-in groove 7, the two ends of described contact axle 4 can be installed in the described draw-in groove 7 up or down, also be provided with clamping stagnation piece 8 at described contact body 2 rear portion upsides, described clamping stagnation piece 8 is the arc-shaped notch shape of opening forwards, described clamping stagnation piece 8 is positioned at the place ahead of described guide vane end stop 6, with the axial connecting line of locating shaft 5 and contact axle 4 is that straight line is divided 1/4 circle to locating shaft 5, and the contact position of described clamping stagnation piece 8 and described locating shaft 5 is 1/4 circle of below of locating shaft 5.
Described resetting device is extension spring 9, and fixed installation bearing pin 10 on the contact body 2 at described contact axle rear portion is installed described extension spring 9 between described locating shaft 5 and bearing pin 10.
The course of work of present embodiment is:
At the clamping stagnation piece of offering on the contact body 8 when the contact body is subjected to electric power and promotes, can up push away for propping up the contact body of naming a person for a particular job with the contact axle, clamping stagnation piece 8 is contacted with locating shaft 5, the contact back is a fulcrum with locating shaft 5, driving contact axle 4 offsets downward along draw-in groove 7, make clamping stagnation piece 8 cross locating shaft and buckle into to locating shaft 5 corresponding positions, make the contact body that an of short duration residence time be arranged in this position, allow the operating mechanism of circuit breaker have the enough time to finish the action of threading off, effectively prevent contact directly resilience behind the contact locating shaft.As the resilience time less than mechanism's break-time, then can make dynamic/static contact secondary contact, influence the disjunction quality.
Claims (2)
1, a kind of contact of breaker device with auto-lock function, comprise rotating shaft and contact body, the front portion of described contact body is provided with the contact, the rear portion of described contact body is equipped with the contact axle regularly, described contact axle is installed in the rotating shaft, be provided with between described contact body and the rotating shaft and be used to drive the resetting device that contact resets, installing and locating axle in the rotating shaft above described contact body rear portion, described locating shaft is positioned at the place ahead of contact axle, described contact body rear portion upside is provided with guide vane end stop, described guide vane end stop is positioned at the top of described locating shaft, it is characterized in that: in described rotating shaft, be provided with draw-in groove, the two ends of described contact axle can be installed in the described draw-in groove up or down, upside also is provided with the clamping stagnation piece at described contact body rear portion, the curved indentations of described clamping stagnation piece, and described clamping stagnation piece is positioned at the place ahead of described guide vane end stop, with the axial connecting line of locating shaft and contact axle is that straight line is divided 1/4 circle to locating shaft, and the contact position of described clamping stagnation piece and described locating shaft is 1/4 justifying of below of locating shaft.
2, the contact of breaker device of band auto-lock function as claimed in claim 1 is characterized in that: described resetting device is extension spring, fixedly mounts bearing pin on the contact body at described contact axle rear portion, and described extension spring is installed between described locating shaft and bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201661213U CN201298504Y (en) | 2008-10-21 | 2008-10-21 | Contact device of circuit breaker with auto-lock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201661213U CN201298504Y (en) | 2008-10-21 | 2008-10-21 | Contact device of circuit breaker with auto-lock function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298504Y true CN201298504Y (en) | 2009-08-26 |
Family
ID=41044490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201661213U Expired - Lifetime CN201298504Y (en) | 2008-10-21 | 2008-10-21 | Contact device of circuit breaker with auto-lock function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298504Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576247A (en) * | 2015-01-05 | 2015-04-29 | 无锡新宏泰电器科技股份有限公司 | Falling-prevention single-break contact operation mechanism |
-
2008
- 2008-10-21 CN CNU2008201661213U patent/CN201298504Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576247A (en) * | 2015-01-05 | 2015-04-29 | 无锡新宏泰电器科技股份有限公司 | Falling-prevention single-break contact operation mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090826 Effective date of abandoning: 20081021 |