CN201608132U - Circuit breaker contact with self-locking function - Google Patents
Circuit breaker contact with self-locking function Download PDFInfo
- Publication number
- CN201608132U CN201608132U CN200920202673XU CN200920202673U CN201608132U CN 201608132 U CN201608132 U CN 201608132U CN 200920202673X U CN200920202673X U CN 200920202673XU CN 200920202673 U CN200920202673 U CN 200920202673U CN 201608132 U CN201608132 U CN 201608132U
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- China
- Prior art keywords
- contact
- slide block
- contact body
- rotating shaft
- sliding block
- Prior art date
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- Expired - Fee Related
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Abstract
A circuit breaker contact with a self-locking function comprises a rotary shaft, a contact body and a contact shaft. A contact point is arranged in the front of the contact body; a hole for penetrating the contact shaft is arranged at the back of the contact body; the contact body is installed inside the rotary shaft through the contact shaft; a contact spring and a sliding block are arranged between the contact body and the rotary shaft; the lower end of the contact spring is installed inside a containing groove of the rotary shaft; the upper end of the contact spring is installed on the sliding block; the sliding block is positioned below the root of the contact; the sliding block can be installed inside a vertical guide groove in up and down moving manner; the rear end of the cross section of the contact body is circular arc-shaped; the lateral surface of the sliding block facing the rear end of the contact body is an inclined surface; the upper bottom surface of the sliding block is smaller than the lower bottom surface of the sliding block; and the inclined surface is in circular arc transition with the upper bottom surface. The circuit breaker contact is capable of effectively preventing the secondary contact between contacts and improving the breaking capacity of a circuit breaker.
Description
Technical field
The utility model relates to field of circuit breakers, especially a kind of contact of breaker.
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 contact of breaker with auto-lock function that can effectively prevent the contact of the secondary between the contact, improve 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 with auto-lock function, comprise rotating shaft, contact body and contact axle, the front portion of described contact body is provided with the contact, the rear portion of described contact body is provided with in order to wear the hole of contact axle, described contact body is installed in the rotating shaft by the contact axle, is provided with touch spring and slide block between described contact body and the rotating shaft, and the lower end of described touch spring is installed in the holding tank of rotating shaft, install on the slide block upper end of described touch spring, and described slide block is positioned at the below of described contact root; Described slide block can be installed in the described vertical guide groove up or down, and the rear end of described contact body cross section is circular arc, is the inclined-plane towards the side of the slide block of described contact body rear end, and the upper bottom surface of slide block is littler than bottom surface, described inclined-plane and upper bottom surface arc transition.
The rear end of described contact body is positioned at the upper bottom surface of slide block when the normal position, the root of described contact body is positioned at when opening on the inclined-plane of slide block.
As preferred a kind of scheme: described holding tank is provided with the guiding rib of vertical layout, and the chute of described slide block two sides is installed on the described guiding rib.Also can be chosen in to hold gathering sill is set on the grass, described slide block two sides are provided with guiding rib.
Further, the cross section of described slide block is trapezoidal shape.Certainly, also can slide block be set to other shape, as long as the shape of inclined-plane and upper bottom surface is determined.
Further again, the bottom surface of described slide block is provided with projection, and the upper end of described spring is sleeved in the described projection, and described rotating shaft is provided with salient point, and the lower end of described spring is sleeved on the described salient point.
Technical conceive of the present utility model is: the function of self-locking contact: test under the big function of current in disjunction, contact scold out allow contact body root sliding point forward on the slide block hypotenuse in a flash the time of short duration residence time arranged, 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 threaded off, the lid that relies on contact to get to circuit breaker resetted contact again.
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 that the utlity model has the contact of breaker of auto-lock function.
Fig. 2 is the schematic diagram of the normal gate-dividing state of contact.
Fig. 3 is that contact is subjected to electric power to scold out the schematic diagram of state.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 3, a kind of contact of breaker with auto-lock function, comprise rotating shaft 6 and contact body, the front portion of described contact body is provided with contact 2, the root of described contact 2 is equipped with flash barrier 4, described flash barrier fixedly mounts itself and contact 1 by rivet 3, and described contact rear portion is provided with installing hole, and described contact body is connected with rotating shaft 6 by contact axle 5; Described rotating shaft 6 is provided with slide block 7 and cooperates the guiding rib c that slides, side towards the slide block of described contact body rear end is the inclined-plane, there is circular arc excessive between the inclined-plane of slide block and the upper bottom surface, there is a projection bottom of described slide block 7, base on the trapezoidal shape slide block, b point position of described slide block 7 contact body 1-4 when normal separating brake, the b point position of contact body 1-4 was at the hypotenuse of trapezoidal shape slide block when described slide block was scolded out at large-current electric power, the touch spring 8 that slide block is resetted is installed between the bottom of described slide block and the rotating shaft, one end of described spring 8 is installed in and prevents on the projection of slide block 7 bottoms that string is moving, the other end of described spring 8 is installed in and prevents on the projection of rotating shaft 6 that string is moving, contacts with rotating shaft 6 when described touch spring 8 is delivered to a point position of contact body by slide block 7 with power to make the contact body spacing.
The course of work of present embodiment is:
When the contact body is subjected to electrodynamic action and 2 positions, contact is up promoted, can up push away for propping up the contact body of naming a person for a particular job with contact axle 5, the active force that slide block 7 is ordered with contact 1 root b along the guiding rib c in the rotating shaft 6 with touch spring 8 toward lower compression, when the hypotenuse of the circular arc of contact 1 root and trapezoidal slide block 7 is tangent, because of slide block 7 has the guiding rib c of rotating shaft 6 that its left and right sides is spacing, can only be toward upper and lower to moving, the circular arc of contact body blocked it when this moment, slide block 7 up promoted, cause whole contact body 1-4 just can't up push away again, be trapped in this position.This moment, the operating mechanism of circuit breaker had the enough time to finish to thread off action, prevented that effectively contact from scolding out the back directly to make the resilience that resets of contact body by the active force of touch spring 8 under the electrodynamic action that big electric current produces.As contact body resetting time less than the operating mechanism break-time, then can make the contact of dynamic/static contact secondary, influence the disjunction quality.
Claims (4)
1. contact of breaker with auto-lock function, comprise rotating shaft, contact body and contact axle, the front portion of described contact body is provided with the contact, the rear portion of described contact body is provided with in order to wear the hole of contact axle, described contact body is installed in the rotating shaft by the contact axle, is provided with touch spring and slide block between described contact body and the rotating shaft, and the lower end of described touch spring is installed in the holding tank of rotating shaft, install on the slide block upper end of described touch spring, and described slide block is positioned at the below of described contact root; It is characterized in that: described slide block can be installed in the described vertical guide groove up or down, the rear end of described contact body cross section is circular arc, side towards the slide block of described contact body rear end is the inclined-plane, and the upper bottom surface of slide block is littler than bottom surface, described inclined-plane and upper bottom surface arc transition.
2. the contact of breaker with auto-lock function as claimed in claim 1 is characterized in that: described holding tank is provided with the guiding rib of vertical layout, and the chute of described slide block two sides is installed on the described guiding rib.
3. the contact of breaker with auto-lock function as claimed in claim 1 or 2 is characterized in that: the cross section of described slide block is trapezoidal shape.
4. the contact of breaker with auto-lock function as claimed in claim 1 or 2, it is characterized in that: the bottom surface of described slide block is provided with projection, the upper end of described spring is sleeved in the described projection, and described rotating shaft is provided with salient point, and the lower end of described spring is sleeved on the described salient point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920202673XU CN201608132U (en) | 2009-12-29 | 2009-12-29 | Circuit breaker contact with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920202673XU CN201608132U (en) | 2009-12-29 | 2009-12-29 | Circuit breaker contact with self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608132U true CN201608132U (en) | 2010-10-13 |
Family
ID=42952836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920202673XU Expired - Fee Related CN201608132U (en) | 2009-12-29 | 2009-12-29 | Circuit breaker contact with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201608132U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763995B (en) * | 2009-12-29 | 2012-08-22 | 宁波奇乐电气集团有限公司 | Circuit breaker contact with self-locking function |
| 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 |
-
2009
- 2009-12-29 CN CN200920202673XU patent/CN201608132U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763995B (en) * | 2009-12-29 | 2012-08-22 | 宁波奇乐电气集团有限公司 | Circuit breaker contact with self-locking function |
| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Hildt Intelligent Electric Switch Co., Ltd. Assignor: Ningbo Qile Electric Group Co., Ltd. Contract record no.: 2011330000653 Denomination of utility model: Circuit breaker contact with self-locking function Granted publication date: 20101013 License type: Exclusive License Record date: 20110601 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20131229 |