CN103443893B - Bridle equipment, the chopper including bridle and using method thereof - Google Patents

Abstract

Disclose a kind of bridle equipment for multi-pole electrical contact assembly.The cross bar of corresponding contact assembly is interconnected by this bridle equipment, and wherein, one or more arms can be pivoted relative to each cross bar.Bridle equipment is configured to engage one or more contact arms in the same side comprising movable electrical contact of one or more contact arms.In one or more embodiments, described bridle equipment has connecting rod, and connecting rod has bridle, and with being molded into the arc shield of connecting rod, wherein, described arc shield can be to phase arc shield and contact to parts arc shield.As other aspects, disclose chopper and there is multi-pole electrical contact assembly and the method for operation multi-pole electrical contact assembly of bridle equipment.

Description

Bridle equipment, the chopper including bridle and using method thereof

Related application

This application claims on February 8th, 2011 submits to, entitled " CIRCUIT BREAKER ELECTRICAL CONTACT ASSEMBLY, AND SYSTEMS AND METHODS USING SAME " the priority of PCT application sequence number PCT/US2011/024016, the disclosure of which is by the most incorporated herein by reference.

Technical field

This invention relates generally to chopper, and relate more particularly to the equipment being suitable for that the rotation of the parts used in chopper is limited.

Background technology

In chopper, it is provided that one or movable electrical contact.Generally, sort of activity electric contact is included on the movable contact wall relative to case for circuit breaker pivot.Usually, armature contact is biased into closed structure by spring so that provides between fixed and movable electric contact and is in close contact.Some chopper can include multiple interconnection contact assembly.Assembly is made electrical contact with side by side for example, it is possible to guided mutually by single electricity and be coupled to the independent of multi-phase circuit breaker.Three or four phase breaker assemblies are universal.Each electrical contact assembly can be connected to neighbouring some by crossing members, and each assembly of electrical contact side by side is suitable for being pivoted around common pivot axis.

But, existing pivoting configuration may cause some design infringement.Therefore, seek to be suitable for the pivot attachment making electrical contact with the improvement used in assembly side by side.

Summary of the invention

In the first embodiment, it is provided that a kind of bridle equipment.Described bridle equipment includes connecting rod, the arc shield being molded in connecting rod, and this arc shield includes to phase arc shield and contact to parts arc shield.

In system embodiment, it is provided that a kind of multi-pole electrical contact assembly.Described multi-pole electrical contact assembly includes multiple electrical contact assembly, each electrical contact assembly has cross bar (corssbar) and the one or more contact arms that can pivot and the bridle equipment of cross bar being coupled to each electrical contact assembly relative to cross bar, wherein, described bridle equipment has bridle, and described bridle is configured to and is suitable for engage the one or more contact arm in the same side comprising movable electrical contact of the one or more contact wall.

In another apparatus embodiments, it is provided that a kind of chopper.This chopper includes case for circuit breaker, multiple electrical contact assembly, each electrical contact assembly has cross bar and the one or more contact arms that can pivot and the bridle equipment of the cross bar of each being coupled in the plurality of electrical contact assembly relative to cross bar, wherein, described bridle equipment has bridle, and described bridle is configured to and is suitable for engage the one or more contact arm in the same side comprising movable electrical contact of the one or more contact arm.

In terms of method, it is provided that a kind of method operating multi-pole electrical contact assembly.The method includes providing multiple electrical contact assembly, each electrical contact assembly includes cross bar and the one or more contact arms of one or more movable electrical contact pivoted with respect to cross bar and has the bridle equipment of bridle, described bridle equipment is coupled to and is interconnected to the cross bar of each electrical contact assembly, and makes the one or more contact arm engage with bridle equipment in the same side comprising one or more movable electrical contact of the one or more contact arm.

Being illustrated with many exemplary embodiments and embodiment, include being contemplated for carrying out the optimal mode of the present invention, according to described in detail below, other aspects of the present invention, feature and advantage can be the most apparent.The present invention can also can have other and different embodiment, and can revise its multiple details at various aspects, all without departing from the spirit and scope of the present invention.And hence it is also possible to think that accompanying drawing and description are substantially illustrative rather than restrictive.All modifications, equivalent and the replacement that covering is fallen within the scope of the present invention by the present invention.

Accompanying drawing explanation

Figure 1A illustrates the front isometric view of the bridle equipment being adapted for attachment to multiple electrical contact assembly according to embodiment.

Figure 1B illustrates isometric view after the bridle equipment according to embodiment.

Fig. 1 C illustrates the front isometric view of the connecting rod of the bridle according to embodiment.

Fig. 1 D illustrates the cross sectional side view of the bridle equipment of the hatching 1D-1D intercepting along Figure 1B according to embodiment.

Fig. 2 illustrates the isometric view of the electrical contact assembly according to embodiment.

Fig. 3 illustrates the isometric view of the multipole contact assembly of the multiple electrical contact assemblies including Fig. 2 by the bridle apparatus interconnection of Figure 1A-1B according to embodiment.

Fig. 4 A and 4B illustrates the partial side view of the biopsy cavity marker devices of the various spring assemblies that can use in electrical contact assembly according to embodiment.

Fig. 5 A illustrates the isometric view of the spring assembly being arranged between contact arm and the public cross bar insert making electrical contact with assembly according to embodiment.

Fig. 5 B illustrates the isometric view being suitable for being installed to electrical contact assembly the support of case for circuit breaker according to embodiment.

Fig. 6 A illustrates the side view in partial cross-section to close the electrical contact assembly shown in (ON) structure according to embodiment.

Fig. 6 B illustrates the side view in partial cross-section to open the electrical contact assembly shown in (OFF) structure according to embodiment.

Fig. 6 C illustrates the side view in partial cross-section to blow the electrical contact assembly shown in structure open according to embodiment.

Fig. 6 D illustrates the side view in partial cross-section to illustrate the in-built electrical contact assembly blown open shown in structure according to embodiment.

Fig. 7 shows the isometric view of the chopper that can include multi-pole electrical contact assembly according to embodiment.

Fig. 8 shows the isometric view of the removed case for circuit breaker of the upper housing portion including multi-pole electrical contact assembly according to embodiment.

Fig. 9 illustrates the side view in partial cross-section of the case for circuit breaker with multi-pole electrical contact assembly installed therein according to embodiment.

Figure 10 illustrates the side view in partial cross-section of the case for circuit breaker with multi-pole electrical contact assembly installed therein according to embodiment.

Figure 11 is the flow chart of the method illustrating the operation electrical contact assembly according to embodiment.

Figure 12-13 is the flow chart of the additive method illustrating the operation electrical contact assembly according to embodiment.

Detailed description of the invention

In view of aforementioned difficulties, it is provided that a kind of electrical contact assembly improving bridle equipment and including this bridle equipment.On the other hand, it is provided that a kind of including improves bridle equipment and the chopper of multi-pole electrical contact assembly.Additionally provide a kind of method that operation includes the multi-pole electrical contact assembly of bridle equipment.

As will become apparent from according to various embodiments, this bridle equipment has bridle, and this bridle advantageously limits the motion of one or more contact arms of independent contact assembly.This bridle is for linking together individually making electrical contact with assembly so that its cross bar jointly moves, such as when circuit breaker handle activated.Additionally, this bridle equipment can include arc shield, this arc shield limits inner contact assembly parts for when meeting with interrupt event (such as, after circuit breaker trip) and is exposed to arc discharge and electric arc fragment.

These and other embodiment of the method for bridle equipment, multi-pole electrical contact assembly, the chopper including multi-pole electrical contact assembly and operation multi-pole electrical contact assembly is described below with reference to Figure 1A-1B.Accompanying drawing has not necessarily been drawn to scale.Identical reference number is used for representing identical element from start to finish.

The most in detail with reference to Figure 1A-1B, it is shown that bridle equipment 100.Bridle equipment 100 is the multipole contact assembly 300(Fig. 3 in the case for circuit breaker 660 that may be mounted at chopper 700) a part, such as, as shown in figs. 7-10.Bridle equipment 100 can perform multiple functions in chopper 700, and is functionally coupled to single contact assembly 200(Fig. 2) and it is interconnected amongst one another.In order to understand the function of bridle equipment 100, first electrical contact assembly 200 will be described.

The most in detail referring to figs. 2 to Fig. 5 B, it is shown that the embodiment of electrical contact assembly 200 and parts thereof.Electrical contact assembly 200 will be referred to as " electrical contact assembly ", " contact assembly " or only " assembly " in this article.Contact assembly 200 can be arranged in the case for circuit breaker 660 of circuit device 700, such as, as shown in Fig. 6 A-10.As depicted, chopper 700 can include multiple independent contact assembly 200(such as, each electricity one mutually).Such as, during multi-pole electrical contact assembly 300 can be included in three-pole breaker (seeing Fig. 3 and 8) and can include with side-by-side configuration orientation three electrical contact assemblies 200.

Refer again to Fig. 2-5B, can be via one or more flexible electrical conductor 501(Fig. 5 A) each electrical contact assembly 200 is interconnected to respective load terminal (such as, single phase).In certain embodiments, flexible electrical conductor 501 can be one or more braiding or lamination conductive metal wire.Can such as pass through brazing, welding, soft soldering etc. to be connected to flexible electrical conductor 501 below each contact arm 206(describe).Other means for connecting can be used.Contact assembly 200 can include one or more contact arm 206.

With reference to Fig. 2 and 4A-4B, the agent structure that electrical contact assembly 200 can include such as cross bar 202, the trunnion 204 being arranged in cross bar 202 and the one or more contact arms 206 being pivotally mounted on trunnion 204 and can rotating around the first pivot axis 207 that the certain length along trunnion 204 extends.Trunnion 204 can be made up of the rigid material of such as steel.Other rigid materials can be used.In certain embodiments, trunnion 204 can be rivet.In the embodiment depicted, contact assembly 200 as shown in figs. 9 and 10 can be around the second pivot axis 208 to the pivot attachment of the case for circuit breaker 600 of chopper 700.Cross bar 202 can function as the pivot attachment that main body enables to realize contact assembly 200 relative to case for circuit breaker 660, such as shown in Fig. 6 A-6D and Fig. 9 and 10.Contact assembly 200 can be provided by guide (pilot) 213 around pivoting of the second pivot axis 208, and guide 213 extends transversely with from the either side of cross bar 202 and received rotatably at support 315(Fig. 3 and 5B) hole 570A, 570B in.

Cross bar 202 can be made up of suitable rigid material, such as filled plastics or metal (such as steel) sheet material, and can include first and second substantial parallel sidewall 202A, 202B and depression 202C.In the embodiment depicted, trunnion 204 can extend between first and second sidewall 202A, 202B.Additionally, in the embodiment depicted, multiple contact arms 206 are pivotally mounted on pin 204 to be orientated side by side, and wherein, pin 204 is through aperture 215.Suitable spacer (such as, the stud on each arm 206) can keep the suitable spacing between corresponding contact arm 206 so that it can rotate freely through in the above.It is arranged on each contact arm 206, is such as movable electrical contact 209M in its first arm section.The first spaced apart first distance of pivot axis 207 in movable electrical contact 209M and the first arm section.This first distance can be about 54 mm between about 40 mm and 60 mm and the most in certain embodiments.Other the first distances can be used.

Pivotally being connected to the second arm section of each contact arm 206 is spring assembly 210.Spring assembly 210 is by being pivotally connected to the second arm section with the pivot connector at the link position of the first spaced apart second distance of pivot axis 207.Second distance can be about 19 mm about between 15 and 25mm and the most in certain embodiments.Other distances can be used.Usually, second distance is less than the first distance.Additionally, the second arm section of contact arm 206 may be located at the side of the pivot axis 207 relative with the first arm section of contact arm 206.

In certain embodiments, spring assembly 210 can include pillar.Spring assembly 210 is connected between cross bar 202 and the second arm section of contact arm 206.As shown in Fig. 4 A-4B, spring assembly 210 can include rod pin 212 and the spring 214 being received on rod pin 212.Rod pin 212 can be cylindrical pin, and it includes the end 212A being configured to and being suitable for received and pivot relative to cross bar 202.

In certain embodiments, cross bar 202 includes cross bar insert 216(Fig. 4 A-4B, 5A and 6D).In the embodiment depicted, each spring assembly 210 is connected to cross bar 202 via cross bar insert 216.Cross bar insert 216 can be received in the depression 202C of cross bar 202 or be kept to rotate wherein.In certain embodiments, cross bar 216 can be fastened by screws in depression 202C.Cross bar insert 216 can be casting metal, such as, such as steel.Typical case's cross bar insert 216 is shown with section in Fig. 4 A-4B.Show another cross bar insert in fig. 5.Cross bar insert 216 is suitable for receiving the end 212A of the rod pin 212 of spring assembly 210.As should be understood, it is provided that there is the electrical contact assembly 200 of any number of spring assembly wherein, such as one, two, three, four, five or more.Each corresponding spring assembly 210 engages cross bar insert 216.

Specifically, during each rod pin 212 can be received in the pivot depression 218 being such as formed in cross bar insert 216.Pivot depression 218 oversize compared with the external dimensions of the rod pin 212 at the 212A of end (such as, bigger in terms of yardstick) can be made.Such as, rod pin 212 can include the diameter of the cylindrical portion between about 3mm and 8mm or between the most about 3mm and 5mm, and can be about 4mm in certain embodiments.Other diameters can be used.In certain embodiments, pivot depression 218 can be the most elongated, such as along the direction of pivot of the rod pin 212 in cross bar insert 216.The dimension that the end of the ratio rod pin 212 along pivotal orientation is bigger is compared in this elongated offer with dimension normal thereto, and it can be only slightly larger than the end 212A of rod pin 212.Pivot and caused (see Fig. 6 B) from Guan Bi (ON) structure (Fig. 6 A) to opening the tripping operation that (OFF) construct by contact assembly 200.

In order to make along with spring assembly 210 is switched to open restriction that structure (Fig. 6 B) causes due to spring assembly 210 relative to the pivotal resistance of cross bar insert 216 (such as from Guan Bi (Fig. 6 A), friction) minimize, Fig. 6 D can seen by spring 214() include bending or pointed surface 216A in the part of cross bar insert 216 that contacts.The surface of cross bar insert 216 can also include that lubrication or other low-friction surfaces process in the above.In certain embodiments, the structure of cross bar insert 216 can be integral with cross bar 202.In the case of wedge angle ridge, ridge extends along the transverse width of cross bar insert 216.Wedge angle ridge can be formed by the cross point of two planes formed on the upper and lower side of the front surface at cross bar insert 216.Compass can be provided in ridge.

Being best seen in Fig. 4 A-4B, spring assembly 210 can include the spring retainer 219 contacted with the first end of spring 214.Spring retainer 219 can be a part for the pivot connector of separate part or spring assembly 210, such as U-clamp 220(Fig. 4 B) or rod end 228(Fig. 4 A) a part.In the embodiment depicted, spring 214 can be helical wound spirng.Spring 214 can have such as spring constant (K) between about 8 and 75 N/mm.Spring 214 can have such as length between about 30mm and 50mm.The external diameter of helical wound spirng 214 can be such as between about 6mm and 14mm.The wire diameter of spring 214 can be between about 1mm and 3mm.Other spring rates, length, external diameter and wire diameter can be used.

Can use and on rod pin 112, receive other kinds of spring 214, such as volute spring, Belleville washer, volute spring, waved spring, dome spring etc..Table 1 below summarises the various disc springs that may be used for multiple design.But, in some embodiments it is possible to use different spring constants.As will be described below, rod end 228 can allow to use bigger spring diameter to some attachment of the second arm section of contact arm 206.In certain embodiments, the use of larger spring can improve the tolerance rated value (the maximum short-time current that chopper is resistant in the case of being not switched on contact) of chopper 700.

Table 1 spring example

The numbering of contact arm	2	3	4
				Contact force (N)	68	44	33
Spring force (N)	263.5	170.5	129.4
				Disc spring external diameter (mm)	12.2	10	7.25
Wire diameter (mm)	2.2	1.8	1.4
				Free its length (mm)	39.2	39.5	39.8

In certain embodiments, as shown in Figure 4 B, the first end of spring assembly 210 can include pivot connector, and it includes the U-clamp 220 of the terminal ends being pivotally connected to the second arm section of contact arm 206.By the aperture of formation in every side of U-clamp 220 and can realize being pivotally connected by the hole formed at the terminal ends of the second end of contact arm 206 by making latch 222.Latch 222 can have any appropriate structuring.Such as, in certain embodiments, latch 222 can be steel rivet.Latch 222 can suitably be press-fitted in U-clamp 220.In certain embodiments, latch 220 can include head.In an embodiment, neutralize the pin 222 that is formed in the hole in contact arm 206 and form low frictional pivot at first end and connect by being received in pivot connector.Other can be used to be pivotally connected.

In the embodiment that Fig. 4 B is described, spring retainer 219 includes the part U-clamp 220 connecting the respective side of U-clamp 220.In each example, the size of spring limiter 219 should be enough to allow spring 214 to be appropriately compressed when mounted between cross bar insert 216 and spring retainer 219.In certain embodiments, with the contact surface area of the spring retainer 219 that spring 214 contacts can at least as the end of spring 214 big.Spring retainer 219 can include flat surfaces, the first end of its contact spring 21.The diameter of rod pin 212 should be enough to make any bending hasp of the spring 214 under contractive condition to minimize.When being installed, spring 214 can be made to be pre-compressed the such as contact force between about 25N and 120N being enough to provide between fixed contact 209S and current collector 209M between spring retainer 219 and cross bar insert 216.Other contact forces can be used.

In alternative embodiments, spring assembly 210 can include pivot connector, and it includes the rod end 228 of terminal ends of the second arm section being pivotally connected to contact arm 206 with latch 222, as shown in Figure 4 A.Rod end 228 can be directly coupled to spring retainer 219.In certain embodiments, rod end 228 can be integral with spring retainer 219.Rod end 228 includes the rigidity hoop of the material around the hole receiving latch 222.But, in certain embodiments, spring retainer 219 and rod end 228 can be separate parts.

In order to reduce the overall with of contact assembly 200, it is provided that have the combination of the spring assembly 210 of the pivot connector of one or more rod end 228 and one or more U-clamp 220.Such as, two spring assemblies 210 of outside can include the pivot connector as rod end 228, and central spring assembly can include the pivot connector as U-clamp 220.Any combination of rod end 228 and U-clamp 220 can be utilized.

In the embodiment described of Fig. 5 A, each spring assembly 210 includes the rod end 228 being laterally offset from the centrage of rod pin 212.Each rod end 228 includes offset configuration, and wherein, the hoop of rod end 228 is laterally offset from the longitudinal center line of rod pin 212.This allows spring assembly 210 to be installed to contact arm 206 with many different structures.This type of lateral shift can allow to use bigger spring 214, and it is little for keeping the spacing between contact arm 206 simultaneously.Larger spring can provide bigger contact force.Latch 222 is inserted into by skew rod end 228, and it can be tapped for holding.Spring 214 can be compressed between cross bar insert 216 and Monolithic spring keeper 219 in advance.Arc angle 240 can be provided on the end of the contact arm 206 relative with armature contact 209M.

Refer again to Fig. 1-3, single contact assembly 200 can be assembled in multipole contact assembly 300.In the embodiment depicted, contact assembly 200 is mutually the same, and each is suitable for receiving the single electricity phase provided from ployphase power distribution system (not shown).Show three-phase contact assembly 300, but various embodiment is apply equally to and is used together with four phase systems, five-phase system etc..Each independent contact assembly 220 can pass through support 315(Fig. 3) be pivotally mounted in case for circuit breaker 660(Fig. 6 A-6D), as being described further herein.Bridle equipment 100 can be provided below at contact arm 206, and it bridle 102 including can engaging with one or more contact arms 206 of each contact assembly 200,103,104(Fig. 3,6A-6D and 8-10).

In operation, bridle equipment 100 includes bridle 102,103,104, and bridle 102,103,104 the same side comprising armature contact 209M at contact arm 206 can engage with contact arm 206 between the first pivot axis 207 and armature contact 209M.The relatively low total section height including that the bridle equipment 100 of bridle 102,103,104 can allow contact assembly 300 is provided below at contact arm 206.Bridle equipment 100 can limit motion and the rotation of contact arm 206 of spring assembly 210.Such as, bridle equipment can be by operating breaker 700(Fig. 7) handle 725 and allow all electricity simultaneously to be opened or close.At other times, bridle 102,103,104 rests on contact arm 206, and prevents contact arm 206 to be pivoted beyond preset range.For example, it is possible to make bridle equipment 100 rotate to OFF short time delay after the trip event realized by trip device.Bridle equipment 100 is possible to prevent contact arm 206 owing to excessively rotating because of the contact erosion caused by such as mechanical wear or fatigue.Additionally or alternati, bridle equipment 100 can include the feature serving as dividing wall or shielding, so that minimizing from the arc discharge between the neighbouring phase of the separation of electric contact 209M, 209S of each phase, but also arc discharge fragment splash degree to contact assembly parts or between phase is made to minimize.

As shown in the most best, bridle equipment 100 is attached to the front end of the cross bar 202 in the face of fixed and movable electric contact 209S, 209M, and serve as shielding, this shielding prevents each from respective arc room 858A, 858B and 858C of the arc discharge fragment of the separation of electric contact 209S, 209M from each phase from entering corresponding separated region 855A, 855B, 855C of case for circuit breaker 760.

As described best in Fig. 1 C and 1D, bridle equipment 100 can include strengthening connecting rod 101, and it can be made up of nonferrous material.Suitable rigidity nonferrous material includes the reinforcement steel pole of such as stainless steel.Other the most perceptual electrically non-conductive materials, such as filled plastics can be used.Connecting rod 101 can be about 7mm height × 7mm width × 180 mm length and can extend across the transverse width of case for circuit breaker 660.In certain embodiments, connecting rod 101 such as whole length along one or more edges can include inclined-plane.Other size and dimensions can be used.

In the embodiment depicted, bridle equipment 100(is not connecting rod 101) and the remainder of bridle can be made up of moldable material.Therefore, it can be formed and include integrated bridle 102,103,104 and the bridle equipment 100 of arc shield.Suitable molding material includes plastics (such as, thermoplastic), is such as used for the plastics of case for circuit breaker 660, rubber etc..Suitable material is the polyester of filled glass fiber.Connecting rod 101(can be received such as by all bridles 102,103,104 and connector part 105, strengthen steel pole), and in certain embodiments can be in combination.The crust of molding material should cover all parts of connecting rod 101.Skin thickness can be greater than about 1mm.In certain embodiments, skin thickness can be between about 1mm to about 5mm or even between about 1.5mm to about 3mm.

Bridle equipment 100 can include one or more arc shield.Such as by injection molding process, the one or more arc shield can be moulded.Such as, in the embodiment depicted, arc shield can be included in bridle 102,103,104 contact embodied to parts arc shield 102A, 103A, 104A, it is by mutually transverse spaced apart, and can be molded, interconnect and/or structurally strengthen (such as, strengthening) by connecting rod 101.Curved front surfaces can provided for contact to parts arc shield 102A, 103A, 104A on each bridle 102,103,104 of armature contact 209M.This curved surface can with at the case for circuit breaker 660(Fig. 6 A-6D for each phase) the upper similar curved surface (such as, curved surface 660B, 660C) formed is tightly engaged.For example, it is possible to provide small-gap suture (such as, about 0.5mm) between contact to the curved front surfaces and curved surface 660C of parts arc shield 104A.Similar gap can be provided between arc shield 103A with curved surface 660B and between arc shield 102A with the curved surface on the case for circuit breaker 660 of the first phase.The gap of other sizes can be used.

Referring again to Figure 1A-1B, each in bridle 102,103,104 can include the upper excrescence 109A and lower excrescence 109B from the extension of the side of each bridle 102,103,104 in the face of tab (tab) 232.Excrescence 109A, 109B may be used for allowing easily to assemble by registration on tab 232.

ON construct in (seeing Fig. 6 A), the curved front surfaces of the contact of bridle 104 to parts arc shield 104A is received in case for circuit breaker 660(and only illustrates a part) surface (such as, curved surface 660C) near.When tripping or opening, (such as, rotating) is moved relative to the fixing surface 660C of case for circuit breaker 660 in contact to parts arc shield 104A.Contact to parts arc shield 104A and curved surface 660C can still at the maximum rotation offset of cross bar 202 the most overlapping.Contact is effectively formed the dividing wall for every phase or shielding to parts arc shield 102A, 103A, 104A, its each respective arc room 858A-858C(Fig. 8 that can operatively make to leave case for circuit breaker 660) electric arc fragment minimize.Especially, curved surface 660A, 660B, 660C of case for circuit breaker 660 is particularly effective with the cooperation of contact to parts arc shield 102A, 103A, 104A when restriction arc splashes.

With reference to Fig. 8 and 9, each in arc chamber 858A-858C can include stationary electrical contacts 209S and arc board component 959(Fig. 9).The most not shown arc board component.Therefore, it can make the fragment in corresponding separation chamber 855A-855C splash minimize, described corresponding separation chamber 855A-855C comprises other contact assembly parts (such as, pivot connector, spring assembly 210, support 500 etc.) of each contact assembly 200.This type of electric arc fragment elapses the smooth trip operation that can affect chopper 700 in time.Minimizing of the traveling of this type of arc discharge fragment splash is desired.Therefore, the contact of bridle 102,103,104 is to parts arc shield 102A, 103A, 104A for stoping the splashing separating the electric arc fragment produced by movable and stationary electrical contacts 209M, 209S to march to corresponding separation chamber 855A-855C from respective arc room 858A-858C, and various contact assembly parts are present at separation chamber 855A-855C.

Referring again to Figure 1A-1B, bridle equipment 100 can also include the mutual lock interface 110 such as formed as molding excrescence.Lock interface 110 can start from the back side of bridle equipment 100 to extend and for docking with plunger to allow the interlocking of two neighbouring choppers mutually.

With reference to Figure 1A-1B, 1D, Fig. 6 A-6D and Fig. 8, arc shield can include to phase arc shield 106,107, is laterally spaced to phase arc shield 106,107 along the certain length of bridle equipment 100 and integral with the bridle 102,103,104 of bridle equipment 100.Flat surfaces 106A, 107A can be included to phase arc shield 106,107, flat surfaces 106A, 107A and the case for circuit breaker 660(Fig. 8 being separated by corresponding electricity) wall 865A, 865B in open butt joint.In the embodiment depicted, it is shown that the connecting rod 101 being molded on the inner of outermost bridle 102,104 to phase arc shield 106,107.But, additionally or alternati, on the end of center bridle 103, it can be moulded.Each to phase arc shield 106,107 can include strengthening part 106A, 107A, and it is suitable for strengthening to phase arc shield 106,107 and the lateral buckling that limits to phase arc shield 106,107.Enhancing part 106A, 107A can be the thicker rib regions of moulded parts.

The opening that the shape and size of each to phase arc shield 106,107 are determined so that in wall 865A, 865B can be capped, regardless of the position of bridle equipment 100.When being installed, during coupling part 105 is received in the opening of wall 865A, 865B.Therefore, in certain embodiments, bridle equipment 100 provides the single parts interconnected by contact assembly 200, and also includes integrated arc shield, and electric arc fragment is shielded and also make to phase arc discharge to minimize by it towards the splash backward of corresponding contact parts.Bridle equipment 100 has enough rigidity with from being connected to Handleset 1090(Figure 10) chopper 700 handle 725 operation transmission load, simultaneously to move each contact assembly 200 being interconnected so that all electricity can be simultaneously activated mutually.

In the embodiment that Fig. 8 is described, the first electricity is mutually and parts are received in arc chamber 858A and separation chamber 855A and can operate in.Second electricity is mutually and parts are received in arc chamber 858B and separation chamber 855B and can operate in.3rd electricity is mutually and parts are received in arc chamber 858C and separation chamber 855C and can operate in.

Fig. 3 and 8 illustrates the bridle equipment 100 for three-pole breaker 700, and wherein, three contact assembly 200(see Fig. 2) it is linked together by bridle equipment 100.Therefore, cross bar 202 all jointly rotates.By mounting characteristic, bridle equipment 100 can be connected to corresponding cross bar 202.Such as, securing member 311(such as, screw, bolt, rivet etc.) hole 108(Figure 1A can be passed through) received and coupled (such as, passing through screw nut) is at cross bar 202(Fig. 2) and side on the tab 232 that formed.Tab 232 can include the nut being captured or welding.

In operation, when there is trip event, such as owing to exceeding the electric current of the rated current of this phase, there is the rotation of movable contact arm 206.This promotes contact arm 206 to rotate rapidly and mobile to blowing structure (Fig. 6 C and 6D) open from Guan Bi (ON) structure (Fig. 6 A).Initially (in closed structure), force vector is directed and is pivotally connected position to the second arm section of contact arm 206 from cross bar insert 216 by what spring 214 and spring retainer 219 were directed to spring assembly 210.This force vector is provided on the first side of pivot axis 207.Therefore, the action of spring assembly 210 provides spring force movable and fixed contact 209S, 209M to be maintained at close contact and under suitable contact pressure.When tripping operation, force vector moves to opening structure (Fig. 6 C) from closed structure along with contact arm 206 and crosses pivot axis 207.In opening structure, as shown in figure 6c, force vector extends to contact arm part from cross bar insert 216 by spring 214 and spring retainer 219 and the connection by spring assembly 210, and force vector is provided on the opposite side of pivot axis 207 now.Therefore, spring assembly 210 contact arm 206 is maintained at and opens structure by spring force now that provide.The short persistent period after experience tripping operation, actuator (not shown) can make the assembly of cross bar 202 and bridle equipment 100 rotate to position as depicted in figure 6b.

Contact arm 206 can be to be provided by any suitable mechanical mechanism 1090 to the replacement of closed structure (such as, Fig. 6 A), and it contacts one or more contact arms 206 or cross bar 202 to promote one or more arm 206 to move back to closed structure.

Fig. 6 A-10 illustrates the chopper 700 being included therein the case for circuit breaker 660 receiving multiple electrical contact assemblies 200.As shown in Fig. 6 A-6D best, can be by support 315(Fig. 5 B) each pivot in contact assembly 200 is attached to shell 660.Support 315 includes hole 570A, the 570B being received on guide 213.Guide 213 allows corresponding contact assembly 200 to be pivoted relative to support 315 and thus around case for circuit breaker 660.

Figure 10 illustrates some optional feature of chopper 700, all as suited for chopper 700 is reset to after trip event " ON " construct or make chopper 700 to become arc sheetpile 959 and Handleset 1090 that " OFF " constructs.

Figure 11 is the flow chart of the method illustrating the operation multi-pole electrical contact assembly (such as, 300) according to embodiment.Method 1100 is included in 1102 provides multiple electrical contact assembly (such as, contact assembly 200), each electrical contact assembly has cross bar (such as, cross bar 202) and the one or more contact arms that can move relative to this cross bar are (such as, contact arm 206), one or more contact arms are (such as, contact arm 206) there is one or more movable electrical contact (such as, movable electrical contact 209M), and the cross bar being coupled to each electrical contact assembly and the bridle equipment (such as, bridle equipment 100) interconnected by cross bar are provided.In 1104, bridle equipment engages the one or more contact arm in the same side comprising one or more movable electrical contact of the one or more contact arm.In certain embodiments, bridle equipment 100 is in close proximity to armature contact 209M location and engages one or more contact arm between armature contact 209M and the first pivot axis 207.

According to alternately or additionally embodiment as shown in Figure 12, operation multi-pole electrical contact assembly is (such as, multi-pole electrical contact assembly 300) method 1200 be included in 1202 at case for circuit breaker (such as, case for circuit breaker 660) in be adjacent to each corresponding electrical contact assembly (such as, contact assembly 200) one or more movable electrical contact (such as, movable electrical contact 209M) arc chamber (such as, 858A-858C) is provided.Method 1200 also includes that in 1204 the electric arc fragment making to leave the respective arc room of case for circuit breaker by being used in upper contact to the parts arc shield (102A, 102B, 102C) formed of bridle equipment (such as, bridle equipment 100) and carrying out shielded arc fragment minimizes.Especially, contact can be integral with bridle 102,103 and 104 and mould therewith to parts arc shield 102A, 103A, 104A.

According to another alternately or additionally embodiment as shown in Figure 13, operation multi-pole electrical contact assembly is (such as, multi-pole electrical contact assembly 300) method 1300 be included in 1302 at case for circuit breaker (such as, case for circuit breaker 660) in be adjacent to each corresponding electrical contact assembly (such as, contact assembly 200) one or more movable electrical contact (such as, movable electrical contact 209M) arc chamber (such as, 858A-858C) is provided.Method 1300 also includes by with can be relative to by the wall of the corresponding case for circuit breaker being separated of case for circuit breaker (such as in 1304, wall 865A, 865B) movement bridle equipment (such as, bridle equipment 100) on carry out shielding to phase arc shield (such as, to phase arc shield 106,107) make case for circuit breaker neighbouring mutually between arc discharge minimize.Described have to phase arc shield (such as, to phase arc shield 106,107) can be by preventing electric arc fragment from leaving a phase and advancing to the neighbouring phase of case for circuit breaker with carrying out shielded arc fragment to phase arc shield.

Although the present invention can have various amendment and alternative form, show specific embodiment and method thereof the most in an illustrative manner and describe in detail in this article.It is to be understood, however, that be not intended to limit the invention to disclosed particular device, system or method, but on the contrary, it is intended to contain all modifications, equivalent or the replacement fallen within the scope of the present invention.

Claims (20)

1. a bridle equipment, including:

Connecting rod；

Multiple bridles, the plurality of bridle is spaced apart along described connecting rod and integral with described connecting rod, and wherein, each bridle is constructed to be permeable to engage with one or more contact arms；And

Being molded into the arc shield of described connecting rod, described arc shield includes to phase arc shield and contact to parts arc shield.

Bridle equipment the most according to claim 1, wherein, described connecting rod includes nonferrous material.

Bridle equipment the most according to claim 1, wherein, described arc shield includes that polyester filled by glass fibre.

Bridle equipment the most according to claim 1, including mounting characteristic, described mounting characteristic is configured to and is adapted to couple to the cross bar of multiple electrical contact assembly and is interconnected by described cross bar.

Bridle equipment the most according to claim 1, wherein, described contact is to parts arc shield, and each have curved front surfaces, and described curved front surfaces is configured to and is suitable for the surface with case for circuit breaker and docks operatively to make the electric arc fragment leaving respective arc room minimize.

6. a multi-pole electrical contact assembly, including:

Multiple electrical contact assemblies, each electrical contact assembly has cross bar and the one or more contact arms that can pivot relative to described cross bar；And

Bridle equipment, described bridle equipment is coupled to the cross bar of each electrical contact assembly, wherein, described bridle equipment includes bridle, described bridle is integral with connecting rod and is configured to and is suitable for engage the one or more contact arm in the same side comprising movable electrical contact of the one or more contact arm, wherein, described bridle equipment is configured to limit the motion of the one or more contact arm.

Multi-pole electrical contact assembly the most according to claim 6, wherein, described bridle equipment includes one or more arc shield.

Multi-pole electrical contact assembly the most according to claim 7, wherein, the one or more arc shield includes that the contact of each electrical contact assembly for the plurality of electrical contact assembly is to parts arc shield.

Multi-pole electrical contact assembly the most according to claim 7, wherein, the one or more arc shield include each electrical contact assembly for the plurality of electrical contact assembly to phase arc shield.

Multi-pole electrical contact assembly the most according to claim 6, wherein, described bridle equipment includes:

Connecting rod；And

It is molded into one or more arc shields of described connecting rod.

11. multi-pole electrical contact assemblies according to claim 10, wherein, the one or more arc shield includes to phase arc shield and contact to parts arc shield.

12. multi-pole electrical contact assemblies according to claim 6, wherein, described bridle equipment includes that the contact of each electrical contact assembly for the plurality of electrical contact assembly is to parts arc shield, and each contact to parts arc shield has the curved surface of the near surface being suitable for being received in case for circuit breaker, described curved surface can be relative to the surface activity of described case for circuit breaker operatively to make the electric arc fragment leaving the arc chamber of case for circuit breaker minimize.

13. multi-pole electrical contact assemblies according to claim 6, wherein, described bridle equipment is installed to the tab being formed on the side of each cross bar.

14. multi-pole electrical contact assemblies according to claim 6, wherein, described bridle equipment includes:

Non-ferric connecting rod；And

To phase arc shield and contact to parts arc shield, it is molded into described non-ferric connecting rod.

15. 1 kinds of choppers, including:

Case for circuit breaker；

Multiple electrical contact assemblies, each electrical contact assembly has cross bar and the one or more contact arms that can move relative to described cross bar；And

Bridle equipment, described bridle equipment is coupled to the cross bar of each in the plurality of electrical contact assembly, wherein, described bridle equipment includes bridle, described bridle is integral with connecting rod and is configured to and is suitable for engage the one or more contact arm in the same side comprising movable electrical contact of the one or more contact arm, wherein, described bridle equipment is configured to limit the motion of the one or more contact arm.

16. choppers according to claim 15, wherein, described bridle equipment includes；

Contact is to parts arc shield, and it can move operatively to make to leave the electric arc fragment of the respective arc room of case for circuit breaker relative to the surface of described case for circuit breaker and minimize；And

To phase arc shield, it can be relative to moving the corresponding separated wall being separated of described chopper operatively to make to leave respective arc room and enter the electric arc fragment adjacent to phase to minimize.

17. choppers according to claim 15, wherein, described bridle equipment includes；

Non-ferric connecting rod；

Contact is to parts arc shield, and it is molded into described non-ferric connecting rod and can minimize relative to the electric arc fragment of the respective arc room that case for circuit breaker is moved operatively to make to leave in the surface of described case for circuit breaker；And

To phase arc shield, it is molded into described non-ferric connecting rod and can minimize relative to the electric arc fragment moving operatively to make to leave respective arc room and the neighbouring phase of entrance by the corresponding separated wall being separated of described chopper.

18. 1 kinds of methods operating multi-pole electrical contact assembly, including:

Multiple electrical contact assembly is provided, each electrical contact assembly has cross bar and the one or more contact arms that can pivot relative to described cross bar, the one or more contact arm has one or more electric contact, and the bridle equipment with bridle is provided, described bridle is integral with connecting rod, and described bridle equipment is coupled to and is interconnected to the cross bar of each electrical contact assembly；And

One or more contact arm is made to engage with described bridle equipment in the same side comprising one or more movable electrical contact of the one or more contact arm, to limit the motion of the one or more contact arm.

The method of 19. operation multi-pole electrical contact assemblies according to claim 18, including:

The one or more movable electrical contact being adjacent to each corresponding electrical contact assembly in case for circuit breaker provide arc chamber；And

The electric arc fragment making to leave the respective arc room of described case for circuit breaker by carrying out shielded arc fragment with the contact on described bridle equipment to parts arc shield minimizes.

The method of 20. operation multi-pole electrical contact assemblies according to claim 18, including:

The one or more movable electrical contact being adjacent to each corresponding electrical contact assembly in case for circuit breaker provide arc chamber；And

By with can relative on the described bridle equipment that the wall of the corresponding case for circuit breaker being separated of described chopper is moved carry out shielding to phase arc shield make described case for circuit breaker neighbouring mutually between arc discharge minimize.