CN204289306U - A kind of moving contact coupling mechanism for circuit breaker - Google Patents
A kind of moving contact coupling mechanism for circuit breaker Download PDFInfo
- Publication number
- CN204289306U CN204289306U CN201520028132.5U CN201520028132U CN204289306U CN 204289306 U CN204289306 U CN 204289306U CN 201520028132 U CN201520028132 U CN 201520028132U CN 204289306 U CN204289306 U CN 204289306U
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- CN
- China
- Prior art keywords
- snap close
- moving contact
- extension spring
- circuit breaker
- close extension
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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.)
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Abstract
The utility model discloses a kind of moving contact coupling mechanism for circuit breaker, solve the problem that the instability that is connected between extension spring with moving contact easily departs from, its technical essential is: a kind of moving contact coupling mechanism for circuit breaker, comprise main shaft, described main shaft is connected with support, movable contact block and moving contact is connected with in described support, connector is connected with between described movable contact block and moving contact, described connector comprises snap close extension spring and snap close brace, described snap close brace offers at least two locking holes for fixing snap close extension spring, described locking hole distributes along the spaced radial of snap close extension spring, described snap close extension spring one end is fixedly connected with described moving contact, the other end of described snap close extension spring is fixedly connected with described movable contact block, the utility model has the advantages that and can make stable connection between snap close extension spring and moving contact, the phenomenon departed from can not occur, moving contact can being made simultaneously more flexible when rotating.
Description
Technical field
The utility model relates to the utility model and relates to appliance component field, specifically relates to a kind of moving contact coupling mechanism for circuit breaker.
Background technology
Circuit breaker refers to and can close, carrying and the electric current under cut-offfing normal loop condition also can close, the switching device of carrying and the electric current under cut-offfing abnormal loop condition in official hour, circuit breaker roughly comprises shell, magnetictrip, handle, Handle axis, operating mechanism, binding post, moving contact, fixed contact, wherein handle is fixedly connected in Handle axis, its main operation principle is that the live wire in circuit is connected with switch ends, when switch is placed in on-state, electric current roughly flows out from bottom terminal, flow through magnetictrip successively, moving contact, fixed contact, form path.Its circuit breaker can carry out protection to power circuit and motor etc.; can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they; its function is equivalent to Fuse switch and the combination of crossing underheat relay etc., and does not generally need to change parts after disjunction fault current.At present, obtain a wide range of applications.
Existing breaker of plastic casing, particularly there is the circuit breaker of current-limiting function when producing short circuit, its dynamic and static contact separates and produces electric arc under electrodynamic effect within the extremely short time, along with the increase of distance of separation between dynamic and static contact, electrodynamic repulsion force declines rapidly, when electrodynamic repulsion force is less than touch spring counter-force, dynamic and static contact starts close.This kind near being called " falling of contact " by industry, and being acknowledged as and can causing bad impact.Such as: extend break-time, cause restriking of electric arc in arc control device, serious meeting scaling loss circuit breaker, thus have influence on the breaking capacity of circuit breaker.For the problems referred to above, it is the anti-falling structure disclosing a kind of contact of breaker in the Chinese patent of 2012204615853 at one section of application number, comprise swing component, fixed support, moving contact and rotating shaft, described moving contact is arranged in rotating shaft rotationally by rotation axis, moving contact has protruding axis, described swing component is arranged in rotating shaft rotationally by hub setting axle, swing component is formed the contact-making surface for matching with protruding axis, described fixed support is fixedly mounted in rotating shaft, described contact-making surface is formed with one and can stops the blocking surface that moving contact falls after rise after moving contact is scolded out, also comprise extension spring, one end of described extension spring is connected with fixed support, the other end of extension spring is connected with swing component.Although to some extent solve the problem of contact falling for the problems referred to above, but also there are some problems, the connected mode that extension spring is being carried out being connected with fixed support and swing component is too simple and crude, hooked by the two ends of extension spring to be pulled on fixed support and swing component, moving contact there will be the problem that extension spring and fixed support and swing component are easily broken off relations in rotation process, so just cause moving contact operationally cannot rotate, breaking capacity declines, cause restriking of electric arc in arc control device, serious meeting scaling loss circuit breaker.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is that providing a kind of can make moving contact and extension spring be connected firmly and the moving contact coupling mechanism for circuit breaker of difficult drop-off.
For achieving the above object, the utility model provides following technical scheme: a kind of moving contact coupling mechanism for circuit breaker, comprise main shaft, described main shaft is connected with support, movable contact block and moving contact is connected with in described support, connector is connected with between described movable contact block and moving contact, described connector comprises snap close extension spring and snap close brace, described snap close brace offers at least two locking holes for fixing snap close extension spring, described locking hole distributes along the spaced radial of snap close extension spring, described snap close extension spring one end is fixedly connected with described moving contact, the other end of described snap close extension spring is fixedly connected with described movable contact block.
As preferably, described moving contact is fixedly connected with fixed lobe, described snap close brace also offers secured adjusted hole, and described secured adjusted borehole jack is located on described fixed lobe.
As preferably, described snap close extension spring is provided with hook-shaped gland in the other end be connected with moving contact, and described movable contact block is provided with the fixed axis for being connected with snap close extension spring, and the hook-shaped gland of described snap close extension spring hooks on fixed axis.
As preferably, described support offers draw-in groove and fixing hole, described draw-in groove and fixedly the first connecting axle be located on movable contact block cooperatively interact, and described fixing hole and fixedly the second connecting axle be located on described moving contact cooperatively interact.
The utility model has following advantage compared to existing technology: by the snap close brace connected between moving contact and movable contact block, snap close extension spring can not directly be connected with moving contact when can be made to be that moving contact connects, snap close brace offers locking hole and secured adjusted hole, this locking hole is at least provided with two and spaced radial along snap close extension spring distributes, this snap close extension spring one end is that hook-shaped gland is hooked on fixed axis, the other end is that the rotation of helical form gland is fixed in two locking holes, snap close extension spring can be made like this to obtain all-directional rotation location, ensure that the stability of snap close extension spring, simultaneously, secured adjusted borehole jack is located on fixed lobe, can make like this to be connected firmly between moving contact and extension spring, snap close extension spring one end is fixedly located in locking hole, snap close extension spring is made effectively to be located and lock, can not be that snap close extension spring comes off, moving contact also can not make extension spring offset when rotating, more stable when also making moving contact be connected with fixed contact simultaneously, and snap close extension spring can be stablized firmly be fixed between movable contact block and moving contact, avoid the disengaging of snap close extension spring, the hole, secured adjusted hole that snap close brace is offered is in being arranged side by side, can regulate moving contact like this, moving contact can be better connected with fixed contact, the moving contact simultaneously also made is more stable when moving, safe and reliable.
Accompanying drawing explanation
The structural representation (one) of this practical a kind of moving contact coupling mechanism for circuit breaker of Fig. 1;
The structural representation (two) of this practical a kind of moving contact coupling mechanism for circuit breaker of Fig. 2;
The structural representation of Fig. 3 the utility model connector;
The structural representation of Fig. 4 the utility model snap close brace;
The structural representation of Fig. 5 the utility model snap close moving contact and movable contact block;
The structural representation (three) of a kind of moving contact coupling mechanism for circuit breaker of Fig. 6 the utility model.
In figure: 1, support; 11, main shaft; 12, fixing hole; 13, draw-in groove; 2, moving contact; 21, fixed lobe; 22, the first connecting axle; 3, movable contact block; 31, holddown groove; 32, fixed axis; 33, the second connecting axle; 4, connector; 41, snap close brace; 411, locking hole; 412, secured adjusted hole; 42, snap close extension spring; 421, hook-shaped gland; 422, helical form gland.
Embodiment
Be described further referring to figs. 1 through Fig. 6 utility model moving contact coupling mechanism for circuit breaker embodiment.
A kind of moving contact coupling mechanism for circuit breaker, as shown in Figure 6, comprise main shaft 11, main shaft 11 is arranged with support 1, movable contact block 3 and moving contact 2 is provided with in support 1, this movable contact block 3 offers holddown groove 31, this holddown groove 31 is connected with fixed axis 32, all one-body molded on the two sides of moving contact 2 have fixed lobe 21, connector 4 is fixed with between movable contact block 3 and moving contact 2, composition graphs 3 and Fig. 4, this connector 4 comprises snap close extension spring 42 and snap close brace 41, wherein, this snap close extension spring 42 one end is one-body molded to be had in hook-shaped gland 421, the other end is helical form gland 422, this snap close extension spring 42 is hooked on fixed axis 32 in hook-shaped gland 421, snap close brace 41 offers at least two locking holes 411 for fixing snap close extension spring 42, one end of this snap close extension spring 42 gland 422 in the shape of a spiral rotates in two locking holes 411, making snap close extension spring 42 be located in realization in locking hole 411 rotates fixing, the secured adjusted hole 412 in being arranged side by side also is offered on snap close brace 41 is sheathed, this secured adjusted hole 412 can be two or three, be preferably two in the present embodiment, snap close extension spring 42 can be made to realize all-directional rotation locate with coordinating of fixed axis 32 and locking hole 411 respectively by the two ends of snap close extension spring 42, make between fixing moving contact 2 that snap close extension spring 42 can be stable and movable contact block 3, the fixed lobe 21 be wholely set at this secured adjusted hole 412 and the two ends of moving contact 2 coordinates, secured adjusted hole 412 is made to be set on fixed lobe 21, the secured adjusted hole 412 simultaneously offered on snap close brace 41 to be set on fixed lobe 21 and snap close brace 41 can be made to rotate around fixed lobe 21, ensure that the stability of moving contact 2 in motion process, make circuit breaker operationally can be more safe and reliable.
Further optimization such scheme, shown in composition graphs 1 and Fig. 6, this support 1 offers fixing hole 12 and establishes and draw-in groove 13; Moving contact 2 is fixedly equipped with the first connecting axle 22, movable contact block 3 is fixedly equipped with the second connecting axle 33, fixing hole 12 on this support 1 and the second connecting axle 33 cooperatively interact, draw-in groove 13 and the first connecting axle 22 cooperatively interact, by coordinating of support 1 and the first connecting axle 22 and the second connecting axle 33, the movable contact block 3 in support 1 can be made and between moving contact 2 and support 1 structure more stable, ensure support 1 with can be more flexible when coordinating between moving contact 2 and movable contact block 3.
Moving contact 2 is driven to move by operating mechanism, in the process of motion, make the motion between moving contact 2 and movable contact block 3 more flexible by the connection of snap close extension spring 42 and snap close brace 41, and the two ends of snap close extension spring 42 are connected with fixed axis 32 and locking hole 411 respectively, make snap close extension spring 42 can Omnibearing spiral location, improve snap close extension spring 42 stability.By being adopted snap close extension spring 42 one end hook-shaped gland 421 to be fixed with fixed axis 32, the other end adopts helical form gland 422 to be rotated in two locking holes 411, and also make the installation of snap close extension spring 42 more for convenience, stability is splendid.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a moving contact coupling mechanism for circuit breaker, comprise main shaft, described main shaft is connected with support, movable contact block and moving contact is connected with in described support, connector is connected with between described movable contact block and moving contact, described connector comprises snap close extension spring and snap close brace, it is characterized in that: described snap close brace offers at least two locking holes for fixing snap close extension spring, described locking hole distributes along the spaced radial of snap close extension spring, described snap close extension spring one end is fixedly connected with described moving contact, the other end of described snap close extension spring is fixedly connected with described movable contact block.
2. a kind of moving contact coupling mechanism for circuit breaker according to claim 1, it is characterized in that: described moving contact is fixedly connected with fixed lobe, described snap close brace also offers secured adjusted hole, described secured adjusted borehole jack is located on described fixed lobe.
3. a kind of moving contact coupling mechanism for circuit breaker according to claim 1, it is characterized in that: described snap close extension spring is provided with hook-shaped gland in the other end be connected with moving contact, described movable contact block is provided with the fixed axis for being connected with snap close extension spring, the hook-shaped gland hook of described snap close extension spring.
4. a kind of moving contact coupling mechanism for circuit breaker according to claim 1, it is characterized in that: described support offers draw-in groove and fixing hole, described draw-in groove and fixedly the first connecting axle be located on movable contact block cooperatively interact, and described fixing hole and fixedly the second connecting axle be located on described moving contact cooperatively interact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028132.5U CN204289306U (en) | 2015-01-15 | 2015-01-15 | A kind of moving contact coupling mechanism for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028132.5U CN204289306U (en) | 2015-01-15 | 2015-01-15 | A kind of moving contact coupling mechanism for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204289306U true CN204289306U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520028132.5U Expired - Fee Related CN204289306U (en) | 2015-01-15 | 2015-01-15 | A kind of moving contact coupling mechanism for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204289306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534382A (en) * | 2019-09-25 | 2019-12-03 | 周义才 | A kind of DPN air switch or leakage switch dynamic contact mechanism |
-
2015
- 2015-01-15 CN CN201520028132.5U patent/CN204289306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534382A (en) * | 2019-09-25 | 2019-12-03 | 周义才 | A kind of DPN air switch or leakage switch dynamic contact mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20210115 |