CN104241056A - Contact device and circuit breaker - Google Patents
Contact device and circuit breaker Download PDFInfo
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- CN104241056A CN104241056A CN201410257635.XA CN201410257635A CN104241056A CN 104241056 A CN104241056 A CN 104241056A CN 201410257635 A CN201410257635 A CN 201410257635A CN 104241056 A CN104241056 A CN 104241056A
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- displaceable element
- circuit breaker
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Abstract
The invention provides a contact device (100) which comprises a contact device (120) and a movable contact (111). The contact device comprises movable elements (101,110) of the movable contact (111). The movable contact pivots to a position where the movable contact contacts with a fixed contact and a position wherein the movable contact separates from the fixed contact. Contact erasing mechanisms (50,109) pivotally supports the movable elements and move the movable elements, so that the movable contact erases the fixed contact.
Description
Technical field
The present invention relates to contact apparatus and circuit breaker.
Background technology
Circuit breaker, for when the circuit of connection power supply and load is at predetermined circuit state, carrys out interrupt circuit (such as, with reference to No. 2000-231869th, Japanese Laid-Open Patent Publication) by breaking-off contact.Such as, circuit breaker can be molded case circuit breaker, earth leakage breaker, overvoltage release, under-voltage circuit breaker etc.When the fault current caused by short circuit or overload being detected, molded case circuit breaker interrupt circuit.When electric leakage being detected, earth leakage breaker interrupt circuit.When the voltage of circuit becomes higher than predetermined upper voltage limit, overvoltage release interrupt circuit.When the voltage of circuit becomes lower than predetermined lower voltage limit, under-voltage circuit breaker interrupt circuit.Multifunctional breaker in conjunction with dissimilar circuit breaker is also known.
Summary of the invention
Typical circuit breaker comprises contact apparatus, linkage and electromagnetic tripping apparatus.Contact apparatus comprises movable contact, and it moves to contact fixed contact and moves away from from fixed contact.Linkage operates contact according to the movement of bar.When predetermined circuit state being detected, electromagnetic tripping apparatus utilizes linkage that contact is threaded off.
Oxide-film or stain may at least one in movable contact and fixed contact be formed.This may cause the connection failure between contact.In other situation, contact may become and stick together.
Target of the present invention is to provide a kind of contact apparatus and circuit breaker, and it is avoided or reduces connection failure and the stickup of movable contact and fixed contact.
One aspect of the present invention is the contact apparatus comprising fixed contact and movable contact.Described contact apparatus comprises displaceable element and contact Wiping mechanism.Described displaceable element comprises movable contact.The position that the position that movable contact is pivoted to movable contact contact fixed contact is separated with fixed contact with movable contact.Contact Wiping mechanism supports displaceable element pivotally and makes displaceable element move to make movable contact wiping fixed contact.
One aspect of the present invention is avoided or is reduced connection failure and the stickup of movable contact and fixed contact.
In one example, contact Wiping mechanism comprises the mobile connecting rod of pivotable together with displaceable element, and restricted part, arrive the extreme angles position of the range of pivot of pivot links at mobile connecting rod before, described restricted part contacts displaceable element and limits the pivotable of displaceable element.When the pivotable of displaceable element is limited by restricted part, displaceable element promotes towards restricted part to make displaceable element make movable contact move so that wiping fixed contact by mobile connecting rod.
In one example, displaceable element comprises elastic conducting electroplax and retainer, and described elastic conducting electroplax comprises movable contact, and described retainer keeps described elastic conducting electroplax and is connected to removable pivot.Described Wiping mechanism comprises the mobile connecting rod supported pivotally by the second pivot, described second pivot is different from described removable pivot, wherein said mobile connecting rod comprises the range of pivot between the first extreme angles position along first direction and the second extreme angles position along second direction, and described Wiping mechanism comprises restricted part, at mobile connecting rod with before reaching the first extreme angles position during first direction pivotable, described restricted part contacts described displaceable element and limits the pivotable of displaceable element.When the pivotable of described restricted part restriction displaceable element and mobile connecting rod further in first direction pivotable time, promote movable contact against while fixed contact at the elastic repulsion force of elastic conducting electroplax, movable contact moves and wiping fixed contact with the direction being different from first direction.
In one example, when mobile connecting rod to contact restricted part position along first direction from retainer be pivoted to further mobile connecting rod reach the position of the first extreme angles position time, movable contact moves around along the contact point surface being pushed against fixed contact.
Another aspect of the present invention provides a kind of circuit breaker, and described circuit breaker comprises according to the one or more contact apparatus in a described aspect above-mentioned and example.
According to an embodiment, the breaker assembly of combination comprises the first circuit breaker and is connected to the second circuit breaker of the first circuit breaker, and the first circuit breaker is described according to circuit breaker on the other hand.
In one example, each in described circuit breaker and described other circuit breaker comprises bar, and described circuit breaker is connected via connecting rod with the bar of described other circuit breaker.
The accompanying drawing of principle of the present invention is shown from description below in combination with the mode of example, and other aspects and advantages of the present invention will become obvious.
Accompanying drawing explanation
The present invention and its target and advantage can be understood best by reference to the description of presently preferred embodiment below and accompanying drawing.In the accompanying drawings:
Fig. 1 is the exploded perspective view of circuit breaker;
Fig. 2 is the end view of the circuit breaker in on-state;
Fig. 3 is the end view of the circuit breaker at overvoltage trip status;
Fig. 4 is the enlarged side view when circuit breaker is in off-state;
Fig. 5 is when bar is positioned at centre position, the enlarged side view of circuit breaker;
Fig. 6 is when bar is positioned at centre position, the enlarged side view of circuit breaker;
Fig. 7 is the enlarged side view when circuit breaker is in off-state;
Fig. 8 is the stereogram of contact apparatus;
Fig. 9 is the stereogram of the removable conductive plate of contact apparatus; With
Figure 10 A and 10B shows the breaker assembly of combination, and it comprises the circuit breaker of Fig. 1 and other circuit breaker.
Embodiment
To describe contact apparatus and comprise the embodiment of circuit breaker of contact apparatus now.Circuit breaker can be overvoltage release 1, and described overvoltage release 1 becomes higher than interrupt circuit during predetermined upper voltage limit at the voltage of circuit.Overvoltage release can use together with the dissimilar circuit breaker molded case circuit breakers of interrupt circuit (such as when the fault current caused by short circuit or overload being detected).
As shown in Figure 1, overvoltage release 1 can comprise housing 10, and it comprises the first lid 11 and the second lid 12.First lid 11 and the second lid 12 can be formed by insulating synthetic resin.The open end 12a that the open end 11a and second of the first lid 11 covers 12 is combined to be limited to the interior compartment in housing 10.
Fig. 1 comprises the orthogonal coordinate system in the direction of instruction under-voltage circuit breaker.Identical orthogonal coordinate system is also included within other accompanying drawing.
As shown in Fig. 1 to Fig. 3, overvoltage release comprises the terminal unit 13 being connected to external power source.Terminal unit 13 can be arranged in the housing 10 of under-voltage circuit breaker.
Bar 20, indicating device 30, linkage 40, electromagnetic tripping apparatus 90, contact apparatus 100 and circuit board 14 are arranged in the interior compartment of housing 10.Circuit board 14 comprises field circuit.Bar door 16 and indicating device window 17 are formed at the upper surface of housing 10.
As shown in Figures 2 and 3, linkage 40 comprises counterpart 41, driver connecting rod 50 (mobile connecting rod), distance rod 60 and latching member 70.Housing 10 is contained in indicating device 30 and the indicating device latching member 80 of the mode of operation of instruction under-voltage circuit breaker in indicating device window 17.
When bar 20 is moved, distance rod 60 makes linkage 40 move.This makes contact apparatus 100 pivotable being connected to linkage 40, contacts with each other to make fixed contact 120 and movable contact 111 move to or moves away from each other.When the voltage of circuit exceedes predetermined voltage, the field circuit of circuit board 14 encourages electromagnetic tripping apparatus 90 and linkage 40 is moved.This makes contact apparatus 100 pivotable and is separated from fixed contact 120 by movable contact 111.Mode of operation is indicated by the indicating device 30 of linkage 40 pivotable.
Bar 20 comprises pivot part 21 and bar protuberance 22.Pivot part 21 is around first pivot 18 pivotable that can be connected to the first lid 11 or can be formed on the first lid 11.When bar protuberance 22 is by operation, bar 20 is around the first pivot 18 pivotable.Connecting rod 23 is parallel to the first pivot 18 from bar protuberance 22 and extends.Connecting rod 23 can be connected to the bar 20A of another circuit breaker 1A, to form the breaker assembly 2 of combination, as illustrated in figs. 10 a and 10b.Therefore, connecting rod 23 makes the bar 20 of overvoltage release 1 pivotable together with the bar 20A of another circuit breaker 1A.More one or more circuit breaker can be connected to described circuit breaker 1 and/or described another circuit breaker 1A.In the illustrated example, when bar protuberance 22 moves away from from terminal unit 13, bar protuberance 22 is positioned at on-position (make position) and when bar protuberance 22 moves near terminal unit 13, bar protuberance 22 is positioned at open position (open position).Such as by bar spring 25, bar 20 is constantly promoted away from on-position.In the following description, the direction (clockwise direction of Fig. 2) that bar 20 is pivoted to the on-position shown in Fig. 7 from the open position shown in Fig. 4 is called connection direction, and the direction (counter clockwise direction of Fig. 4) that bar 20 is pivoted to open position from on-position is called disconnection direction.
Counterpart 41 is supported by the 3rd pivot 43 pivotly.Counterpart 41 maintenance can be one end of the depending post 42 of Metallic rod.The other end of depending post 42 to be projected into outside the second lid 12 by slit 12b and to be connected to the counterpart of another circuit breaker.
Driver connecting rod 50, latching member 70 and indicating device 30 are around the second pivot 19 pivotable.Second pivot 19 comprises two ends being supported or be connected to housing 10 by housing 10.Driver spring 55 constantly promotes driver connecting rod 50 along disconnecting direction.Driver spring 55 has the one end being connected to the first lid 11 and the other end being connected to driver connecting rod 50.Bar spring 25 is constantly along disconnecting direction catch bar 20.Indicating device case spring 85 (it can be torsion spring) constantly promotes indicating device latching member 80 along connecting direction.
Distance rod 60 can be the metal round rod bending to U-shaped.Distance rod 60 comprises operative end 61 and transmits end 62.Operative end 61 is installed in the connecting hole 24 of bar 20.Transmit end 62 to be arranged in the tie rod holes 54 that formed by the junction surface 51 of driver connecting rod 50 and the lock portion 71 of latching member 70.In that case, distance rod 60 is by latching member 70 locking (blocking).At blocking, distance rod 60 by the Movement transmit of bar 20 to driver connecting rod 50.When driver connecting rod 50 is driven by electromagnetic tripping apparatus 90, driver connecting rod 50 and latching member 70 are pivoted relative to each other and open tie rod holes 54.Then, the transmission end 62 of distance rod 60 moves out tie rod holes 54.In that case, distance rod 60 discharges (unlocking state) from latching member 70.
4th pivot 81 supports indicating device latching member 80 pivotally.Indicating device case spring 85 constantly promotes indicating device latching member 80 along disconnecting direction.Indicating device latching member 80 comprises upper end 82, and the downside of indicating device 30 comprises engagement tabs 32.When the engagement tabs 32 of upper end 82 contact pointer 30 of indicating device latching member 80, indicating device 30 is limited further rotating of direction of disconnection.Indicating device 30 comprises the far-end of the indicating section 31 limiting indicating circuit state.Indicating section 31 comprises the upper surface being divided into two regions.Restriction normal region, the side 31a of the close bar 20 of indicating section, and the side away from bar 20 of indicating section limits dropout region 31b.One in 31a and 31b of region exposes from indicating device window 17.
In the example depicted in fig. 8, contact apparatus 100 comprises elastic conducting electroplax 110 and retainer 101.Elastic conducting electroplax 110 comprises movable contact 111.Retainer 101 keeps elastic conducting electroplax 110.Retainer 101 comprises the arm section 103 being pivotally connected to removable pivot 102.The removable pivot 102 remained on by retainer 101 on driver connecting rod 50 can be the axle that formed by a part for driver connecting rod 50 or be connected to driver connecting rod 50 with shaft element moveable with driver connecting rod 50 one.Driver connecting rod 50 is pivotable in the range of pivot of the second pivot 19 between the first extreme angles position along first direction and the second extreme angles position along second direction.Elastic conducting electroplax 110 and retainer 101 can be called pivotable displaceable element.Arm section 103 can be called the cardinal extremity part of displaceable element.Movable contact 111 is arranged on the distal portions of displaceable element.
Elastic conducting electroplax 110 is connected to terminal unit 13 by connecting line 119.Contact apparatus 100 comprises the spacer pin 109 as restricted part.When driver connecting rod 50 around the second pivot 19 in first direction pivotable time, before driver connecting rod 50 reaches the first extreme angles position, spacer pin 109 contacts retainer 101 and limits the pivotable of retainer 101.In the example shown, when spacer pin 109 limits the pivotable of retainer 101 at first direction, driver connecting rod 50 is permitted to the first extreme angles position in the further pivotable of first direction.As shown in Figure 1, spacer pin 109 is connected to the conjugate foramen 11b formed in the first lid 11 and the second lid 12.Do not have spacer pin 109, retainer 101 will be pivoted to the first extreme angles position of range of pivot.Spacer pin 109 coordinates to form contact Wiping mechanism with driver connecting rod 50.
As shown in Figures 2 and 3, housing 10 containment circuit board 14.Electromagnetic tripping apparatus 90 is installed on circuit board 14 to drive latching member 70 by supplying current to solenoid 92.Circuit board 14 comprises the parts of field circuit, and described field circuit stops the solenoid 92 encouraging electromagnetic tripping apparatus 90 when false voltage being detected.
Electromagnetic tripping apparatus 90 comprises bobbin 91, solenoid 92, fixed magnetic core 93, retainer 96, removable magnetic core 97 and the helical spring 98 that can be formed by synthetic resin.Fixed magnetic core 93 can be formed by magnetic material (iron) plate.In the illustrated embodiment, fixed magnetic core 93 is U-shaped and comprises upper arm and underarm 95.Upper arm is installed in the hole of bobbin 91.The far-end of upper arm exposes from bobbin 91.Helical spring 98 remains on the underarm 95 of fixed magnetic core 93.Retainer 96 comprises the retainer pivot 96c supported pivotally by bobbin 91.Retainer 96 is included in the first composition surface 96a and the second composition surface 96b of its far-end.First composition surface 96a is near the composition surface 72 of latching member 70.Second composition surface 96b is near the lower joint portion 83 of indicating device latching member 80.When the connection direction pivotable of retainer 96 at retainer 96, the first composition surface 96a contacts the composition surface 72 of latching member 70 and makes latching member 70 in disconnection direction pivotable.Removable magnetic core 97 (it can be plate of magnetic material) is kept by retainer 96.When retainer 96 pivotable, removable magnetic core 97 contacts the upper arm of fixed magnetic core 93 and the distal surface (magnetic pole surfaces) of underarm position at removable magnetic core 97 and removable magnetic core 97 are from pivotable between the position that the upper arm of fixed magnetic core 93 and the distal surface (magnetic pole surfaces) of underarm are separated.
In the example shown in Fig. 8 and Fig. 9, retainer 101 comprises arm section 103 and retaining part 104.Wall portion 103 remains on driver connecting rod 50 by removable pivot 102.Retaining part 104 keeps elastic conducting electroplax 110.Arm section 103 comprises patchhole 103a, and removable pivot 102 is inserted by described patchhole.Removable pivot 102 is inserted through the patchhole 50a (with reference to figure 4 and Fig. 5) formed in the driver connecting rod 50 and patchhole 103a formed in arm section 103 to be remained on driver connecting rod 50 by retainer 101.
Elastic conducting electroplax 110 is formed by conductive elastomer.One end of elastic conducting electroplax 110 comprises the movable contact 111 of contact fixed contact 120.The other end of elastic conducting electroplax 110 comprises U-shaped coupling part 112.The retaining part 104 of retainer 101 keeps the coupling part 112 of elastic conducting electroplax 110.
The extension 106 that the retaining part 104 of retainer 101 comprises U-shaped clamp 105 and extends from the intermediate curved section of clamp 105.Clamp 105 is from the coupling part 112 of outside clamping elastic conducting electroplax 110.Extension 106 is installed in the space that limited by the coupling part 112 of elastic conducting electroplax 110.One end of clamp 105 and one end of extension 106 comprise restriction elastic conducting electroplax 110 respectively in the stopper section 107 and 108 of transverse shifting, the longitudinal direction of the cross-section elastic conducting electroplax 110 of described transverse direction.Stopper section 107 and 108 extends in contrary direction.Each in stopper section 107 and 108 can the side surface of coupling part 112 in contact resilient conductive plate 110.The bottom of extension 106 comprises the ridge 106a engaged with elastic conducting electroplax 110.
The far-end of the coupling part 112 in elastic conducting electroplax 110 is as the connector being connected to connecting line 119.In preferred example, connector can be the sweep 113 formed by being bent toward the outer side by the far-end of coupling part 112.Sweep 113 contacts the retaining part 104 of retainer 101.The coupling part 112 of elastic conducting electroplax 110 is included in the bonding part 114 and 115 of the opposition side formation of the ridge 106a of retaining part 104.Bonding part 114 can be by the plate of a part for coupling part 112 towards lateral bend in U-shaped coupling part 112.Bonding part 115 can be give prominence to plate into U-shaped coupling part 112 from sweep 113.When elastic conducting electroplax 110 is attached to retainer 101, bonding part 114 and 115 coordinates to clamp the ridge 106a of retaining part 104.The sweep 113 of elastic conducting electroplax 110 is connected to one end of connecting line 119 by connection fittings 118.
When elastic conducting electroplax 110 is attached to retainer 101, when the U-shaped coupling part 112 of elasticity of compression conductive plate 110, elastic conducting electroplax 110 is installed to retainer 101 from retaining part 104 side.The gap of coupling part 112 between stopper section 107 and 108, and elastic conducting electroplax 110 moves longitudinally.When the ridge 106a of retaining part 104 is through out-of-date, the bonding part 114 of elastic conducting electroplax 110 is extruded and strain by ridge 106a.When ridge 106a contacts bonding part 115, bonding part 114 turns back to its initial configuration and ridge 106a remains between bonding part 114 and 115.Elastic conducting electroplax 110 remains on retainer 101 by the repulsive force of the coupling part 112 of compression.
As shown in Figure 8 and Figure 9, one end of connecting line 119 is connected to the sweep 113 of elastic conducting electroplax 110 by connection fittings 118 and the clamp 105 around retaining part 104 is wound around.The other end of connecting line 119 is connected to terminal unit 13.
Referring to figs. 2 and 5, spacer pin 109 contacts the retaining part 104 of retainer 101 and limits the further pivotable of retainer 101 at first direction.The elastic conducting electroplax 110 (movable contact 111) that this restriction is kept by retaining part 104 is in the further pivotable of first direction.In that case, movable contact 111 contacts with fixed contact 120.But driver connecting rod 50 is allowed in the further pivotable of first direction.Therefore, driver connecting rod 50 makes removable pivot 102 at first direction around the second pivot 19 pivotable in the further pivotable of first direction.When driver connecting rod 50 is around the second pivot 19 pivotable, a part (such as removable pivot 102) for driver connecting rod 50 produces the component motion at longitudinal Y of housing 10.Therefore, when retaining part 104 contacts with spacer pin 109, retaining part 104 (retainer 101) is not around the second pivot 19 pivotable but move in glide direction.This makes the movable contact 111 of the elastic conducting electroplax 110 kept by retaining part 104 move to contact so that wiping fixed contact 120 with fixed contact 120.Longitudinal Y of housing 10 is examples for glide direction.
The operation of overvoltage release will be described now.First the operation of the overvoltage release when overvoltage release is switched to the on-state of Fig. 7 from the off-state of Fig. 4 will be described.
When bar 20 is pivoted to on-position (Fig. 7) from open position (Fig. 4) along connection direction, distance rod 60 promotes the junction surface 51 of driver connecting rod 50 and makes driver connecting rod 50 in connection direction pivotable.
When driver connecting rod 50 is around the second pivot 19 pivotable, retainer 101 and elastic conducting electroplax 110 are connecting direction pivotable around the second pivot 19.
With reference to figure 5, when bar 20 arrives the centre position between open position and on-position, movable contact 111 contacts fixed contact 120.Here, retaining part 104 contacts spacer pin 109.This restriction retaining part 104 is in the further pivotable connecting direction.
Then, with reference to figure 6, when bar 20 is further towards on-position pivotable, driver connecting rod 50 is in connection direction pivotable.While retaining part 104 keeps contacting with spacer pin 109, retaining part 104 and elastic conducting electroplax 110 are in the distance of the mobile driver connecting rod 50 (removable pivot 102) of glide direction (left side towards Fig. 6) in glide direction movement.This makes movable contact 111 move and wiping fixed contact 120 in glide direction when contacting with fixed contact 120.
Fig. 4 to Fig. 7 illustrates the handoff boundary L be connected with the transmission end 62 of distance rod 60 by the first pivot 18 of bar 20.As shown in Figure 6, when the operative end 61 of distance rod 60 is all positioned on handoff boundary L with transmission end 62, retaining part 104 and movable contact 111 are positioned at the maximum shift position of glide direction, namely, and mobile limit point.
When bar 20 pivotable further from the position of Fig. 6, the pivotal orientation of driver connecting rod 50 is reverse when the operative end 61 of distance rod 60 is moved across handoff boundary L.The pivotable of driver connecting rod 50 makes the moving direction of retaining part 104 and movable contact 111 oppositely (the right towards Fig. 7).While movable contact 111 keeps contacting with fixed contact 120, movable contact 111 moves and wiping fixed contact 120.
Along with bar 20 is in connection direction pivotable, when the operative end 61 of distance rod 60 crosses handoff boundary line L, the transmission end 62 of distance rod 60 stops when being pushed against junction surface 51.Here, bar 20 and distance rod 60 remain on on-position, and overvoltage release is connected.The latching member 70 promoted by case spring 75 is pivoted to the position that latching member 70 contacts the transmission end 62 of distance rod 60.Driver connecting rod 50 promotes the bonding part 33 of indicating device 30.This makes indicating device 30 in connection direction pivotable and moves to indication reset position.And counterpart 41 is connecting direction pivotable along with driver connecting rod 50 pivotable.This utilizes depending post 42 that the counterpart of another circuit breaker is moved.If be normal at on-state voltage, field circuit does not provide current to the solenoid 92 of electromagnetic tripping apparatus 90.Helical spring 98 promotes retainer 96 to make removable magnetic core 97 be separated with fixed magnetic core 93.Here, the first composition surface 96 of retainer 96 is separated with latching member 70.
Now by description when overvoltage release is switched to off-state from on-state, the operation of overvoltage release.When bar 20 is switched to open position (Fig. 4) from on-position (Fig. 7) along disconnection direction, distance rod 60 pulls latching member 70.This makes latching member 70 resist the motive force pivotable of case spring 75 and open tie rod holes 54 towards upside.Driver spring 55 promotes driver connecting rod 50 in disconnection direction.The protuberance 73 of latching member 70 is resisted motive force and is promoted counterpart 41 and make counterpart 41 in disconnection direction pivotable.Case spring 75 promotes indicating device 30 and makes indicating device 30 in disconnection direction pivotable.Indicating device 30 stops when the upper end 82 of engagement tabs 32 contact pointer latching member 80.Here, the normal region 31a of indicating section 31 exposes from indicating device window 17.
The operation when electromagnetic tripping apparatus 90 works and overvoltage release is switched to trip status from on-state (Fig. 2 and Fig. 7) will be described now.Fig. 3 illustrates that overvoltage is threaded off the moment occurred.
As shown in Figure 3, when field circuit detects supply voltage higher than predetermined value (it is higher than rated voltage), field circuit provides current to solenoid 92 in on-state and attracts removable magnetic core 97 to fixed magnetic core 93.This makes overvoltage release thread off.Removable magnetic core 97 is attracted to fixed magnetic core 93 and makes retainer 96 in the connection direction pivotable of bar 20.When the connection direction pivotable of retainer 96 at bar 20, the first composition surface 96a of retainer 96 promotes the composition surface 72 of latching member 70.Latching member 70 is in the disconnection direction pivotable of bar 20, and the transmission end 62 of distance rod 60 is separated with the lock portion 71 of latching member 70.When the transmission end 62 of distance rod 60 is separated with the lock portion 71 of latching member 70, transmit the operative end 61 of end 62 around distance rod 60 in the disconnection direction pivotable of bar 20.
Because the transmission end 62 of distance rod 60 moves out tie rod holes 54, the driver connecting rod 50 no longer supported by distance rod 60 is promoted by driver spring 55 and is pivoted to open position in disconnection direction.And the protuberance 73 of latching member 70 is towards upper thruster counterpart 41, and depending post 42 drives the interrupt mechanism of another circuit breaker to make interrupt mechanism's breaking-off contact.This makes electric current stop being fed to the load being connected to another circuit breaker, and thus protection load.Here, the magnetic attraction produced by fixed magnetic core 93 makes retainer 96 in connection direction pivotable.
Second composition surface 96b of retainer 96 promotes the lower joint portion 83 of retainer 96 and makes the lower joint portion 83 of retainer 96 in disconnection direction pivotable to make indicating device 30 unlocking.When indicating device 30 unlocking, indicating device 30 receives the motive force of case spring 75 and disconnects direction pivotable.The dropout region 31b of indicating section 31 exposes from indicating device window 17.Then, bar 20 receives the motive force of bar spring 25 and disconnects direction pivotable.When bar arrives open position, the transmission end 62 of distance rod 60 to be installed in tie rod holes 54 and to move to the position of transmitting engagement latch portion, end 62 71.Here, the transmission end 62 of distance rod 60 be installed to by driver connecting rod 50 and latching member 70 around tie rod holes 54 in.Therefore, when making bar 20 when connecting direction and being pivoted to on-position, the state of Fig. 4 is obtained.
Above-described embodiment has advantage described below.
(1) spacer pin 109 limits the pivotable of movable contact 111.This makes movable contact 111 move and wiping fixed contact 120 in glide direction.The mutual wiping of contact 111 and 120.This removes oxide-film and stain from contact 111 and 120 and improves contact reliability.And when contact 111 and 120 is pasted each other, shearing force is applied to the position that contact 111 and 120 is pasted each other.This makes contact 111 be separated with 120.
(2) in the example shown, contact Wiping mechanism comprises driver connecting rod 50 and the spacer pin 109 of pivotable together with retainer 101, and described spacer pin contacted retainer 101 arrive the extreme angles position in the range of pivot of driver connecting rod 50 at driver connecting rod 50 before and limits the pivotable of retainer 101.When spacer pin 109 limits the pivotable of retainer 101 (retaining part 104), driver connecting rod 50 promotes retainer 101 to make movable contact 111 move and wiping fixed contact 120 towards spacer pin 109.Relatively simple contact Wiping mechanism makes the surface of contact 111 and 120 abut against each other wiping.This removes the oxide-film and stain and improve contact reliability that hinder contact 111 and 120 to be electrically connected.And when contact 111 is together with 120 paste, contact Wiping mechanism makes contact 111 be separated with 120.
(3) spacer pin 109 is discrete with lid 11 and 12.Be connected at spacer pin 109 in the example of lid 11 and 12, cover the circuit breaker not using spacer pin 109 that 11 and 12 may be used for other.
(4) to hold and the contact Wiping mechanism restriction retainer 101 be supported in housing 10 and/or the pivotable of elastic conducting electroplax 110.And contact Wiping mechanism is connected to housing 10 removably.In this case, housing 10 may be used for the contact apparatus not comprising contact Wiping mechanism.
It will be apparent to those skilled in the art that the present invention can implement with other concrete forms many and not leave the spirit or scope of the present invention.Especially, it is to be appreciated that the present invention can implement with form below.
Spacer pin 109 can be a part for lid 11 or lid 12.In this case, spacer pin 109 or can cover 12 and to be integrally formed and in contact apparatus, the quantity of parts can reduce with lid 11.
Preferably, restricted part is shaft-like spacer pin 109.But restricted part can have any shape, the form of such as protrusion or plate.
Contact apparatus 100 can be used in the circuit breaker of the type being different from overvoltage release.
Description is above intended to exemplary, and is nonrestrictive.Such as, can combine above-described example (or one is individual or many aspects) use each other.Other embodiment can such as be read description above by those skilled in the art's process and be used.Equally, in superincumbent embodiment, various feature can collect and is combined together to simplify the present invention.This disclosed feature that should not be interpreted as being intended to failed call protection is absolutely necessary to any claim.On the contrary, creationary theme can be all features being less than specific disclosed embodiment.Therefore, claim is below merged in embodiment in this article, and every claim is independent of independent embodiment.Scope of the present invention should be determined with reference to the four corner of additional claim with the equivalent of these claims issue.
Claims (7)
1. a contact apparatus, described contact apparatus comprises fixed contact and movable contact, and described contact apparatus comprises:
Comprise the displaceable element of described movable contact, wherein said movable contact is pivoted to the position that position that described movable contact contacts described fixed contact is separated with described fixed contact with described movable contact; With
Contact Wiping mechanism, described contact Wiping mechanism supports displaceable element pivotally and makes displaceable element move to make movable contact wiping fixed contact.
2. contact apparatus according to claim 1, wherein
Described contact Wiping mechanism comprises mobile connecting rod and restricted part, described mobile connecting rod is pivotable together with described displaceable element, arrive the extreme angles position of the range of pivot of pivot links at described mobile connecting rod before, described restricted part contacts described displaceable element and limits the pivotable of described displaceable element;
When the pivotable of described displaceable element is limited by restricted part, described mobile connecting rod promotes displaceable element to make described displaceable element move described movable contact so that fixed contact described in wiping towards restricted part.
3. contact apparatus according to claim 1, wherein:
Described displaceable element comprises elastic conducting electroplax and retainer, and described elastic conducting electroplax comprises described movable contact, and described retainer keeps described elastic conducting electroplax and is connected to removable pivot;
Described contact Wiping mechanism comprises:
Mobile connecting rod, described mobile connecting rod is supported pivotally by the second pivot being different from described removable pivot, wherein said mobile connecting rod is included in the first extreme angles position of first direction and the range of pivot between the second extreme angles position of second direction, and
Restricted part, before described mobile connecting rod arrives the first extreme angles position along first direction pivotable, described restricted part contacts described displaceable element and limits the pivotable of described displaceable element; And
When described restricted part limit the pivotable of described displaceable element and described mobile connecting rod pivotable further along first direction time, promote movable contact against while fixed contact at the elastic repulsion force of described elastic conducting electroplax, described movable contact moves and fixed contact described in wiping along the direction being different from first direction.
4. contact apparatus according to claim 3, wherein
When described mobile connecting rod to contact restricted part position along first direction from retainer be pivoted to further mobile connecting rod arrive the position of the first extreme angles position time, described movable contact moves back and forth along the contact point surface of backup fixed contact.
5. one kind comprises the circuit breaker of the contact apparatus any one of Claims 1-4.
6. a breaker assembly for combination, comprising:
First circuit breaker, it is circuit breaker according to claim 5; And
Be connected to the second circuit breaker of the first circuit breaker.
7. the breaker assembly of combination according to claim 6, wherein
Each in first circuit breaker and the second circuit breaker comprises bar; And
The bar of the first and second circuit breakers connects via connecting rod.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013124528A JP2015002012A (en) | 2013-06-13 | 2013-06-13 | Contact device and circuit breaker |
| JP2013-124528 | 2013-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104241056A true CN104241056A (en) | 2014-12-24 |
Family
ID=52228928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410257635.XA Pending CN104241056A (en) | 2013-06-13 | 2014-06-11 | Contact device and circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015002012A (en) |
| CN (1) | CN104241056A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354610A (en) * | 2015-05-18 | 2020-06-30 | 吉加瓦有限责任公司 | Fuse device |
| US11239038B2 (en) | 2015-05-18 | 2022-02-01 | Gigavac, Llc | Mechanical fuse device |
| US11387061B2 (en) | 2015-05-18 | 2022-07-12 | Gigavac, Llc | Passive triggering mechanisms for use with switching devices incorporating pyrotechnic features |
| US11443910B2 (en) | 2019-09-27 | 2022-09-13 | Gigavac, Llc | Contact levitation triggering mechanisms for use with switching devices incorporating pyrotechnic features |
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| GB2147146A (en) * | 1983-09-26 | 1985-05-01 | Fuji Electric Co Ltd | Contact mechanism for a circuit breaker |
| CN1164116A (en) * | 1996-03-29 | 1997-11-05 | 施耐德电器公司 | Circuit breaker operating mechanism with wide opening angle |
| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动***公司 | Switching mechanism of protective switch |
| CN1846289A (en) * | 2003-09-25 | 2006-10-11 | 西门子公司 | Low-voltage power circuit breaker having radial contact movement by integrating the contact supports in the actuating shaft |
| CN101964284A (en) * | 2010-09-27 | 2011-02-02 | 耐思电气(嘉兴)有限公司 | Operating mechanism of leakage protector |
| CN103021748A (en) * | 2012-12-28 | 2013-04-03 | 常熟开关制造有限公司(原常熟开关厂） | Large-fracture circuit breaker |
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2013
- 2013-06-13 JP JP2013124528A patent/JP2015002012A/en active Pending
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2014
- 2014-06-11 CN CN201410257635.XA patent/CN104241056A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147146A (en) * | 1983-09-26 | 1985-05-01 | Fuji Electric Co Ltd | Contact mechanism for a circuit breaker |
| CN1164116A (en) * | 1996-03-29 | 1997-11-05 | 施耐德电器公司 | Circuit breaker operating mechanism with wide opening angle |
| CN1409346A (en) * | 2001-09-25 | 2003-04-09 | 莫勒自动***公司 | Switching mechanism of protective switch |
| CN1846289A (en) * | 2003-09-25 | 2006-10-11 | 西门子公司 | Low-voltage power circuit breaker having radial contact movement by integrating the contact supports in the actuating shaft |
| CN101964284A (en) * | 2010-09-27 | 2011-02-02 | 耐思电气(嘉兴)有限公司 | Operating mechanism of leakage protector |
| CN103021748A (en) * | 2012-12-28 | 2013-04-03 | 常熟开关制造有限公司(原常熟开关厂） | Large-fracture circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354610A (en) * | 2015-05-18 | 2020-06-30 | 吉加瓦有限责任公司 | Fuse device |
| US11239038B2 (en) | 2015-05-18 | 2022-02-01 | Gigavac, Llc | Mechanical fuse device |
| US11387061B2 (en) | 2015-05-18 | 2022-07-12 | Gigavac, Llc | Passive triggering mechanisms for use with switching devices incorporating pyrotechnic features |
| US11443910B2 (en) | 2019-09-27 | 2022-09-13 | Gigavac, Llc | Contact levitation triggering mechanisms for use with switching devices incorporating pyrotechnic features |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015002012A (en) | 2015-01-05 |
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Application publication date: 20141224 |