CN101938233A - Manual operation motor starter with isolation function - Google Patents
Manual operation motor starter with isolation function Download PDFInfo
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- CN101938233A CN101938233A CN 201010284540 CN201010284540A CN101938233A CN 101938233 A CN101938233 A CN 101938233A CN 201010284540 CN201010284540 CN 201010284540 CN 201010284540 A CN201010284540 A CN 201010284540A CN 101938233 A CN101938233 A CN 101938233A
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Abstract
The invention relates to a manual operation motor starter with isolation function. A handle can rotate between an on position and an off position of a contact, a pair of transmission gears with meshing relationship are connected between the handle and a connecting rod mechanism, a lug boss is formed on the transmission gear fixed on a handle shaft, a stop surface is formed on the transmission gear connected with the connecting rod mechanism; under the condition that a static contact and a moving contact do not have fusion welding, the handle is rotated to execute off or disconnecting operations, the transmission gears are meshed, the lug boss is not in contact with the stop surface to ensure that the handle can normally enter an off position or disconnecting position consistent with the states of the contacts; and under the condition that the contacts have fusion welding and a resultant force formed by an operating force applied from the handle and an elastic force of an energy-storing spring can not overcome the resultant force formed by the elastic force of a contact spring and a welding force of the fusion welding of the contacts, the handle is rotated to execute the disconnecting operation, the lug boss is in contact with the stop surface, and the stop surface stops the handle from rotating through the lug boss to ensure that the handle only reaches the fusion welding position and does not reach the disconnecting position.
Description
Technical field
But the invention belongs to the electromechanical field of circuit breakers of dependent manual operation, particularly relate to a kind of manual operation motor starter with isolation features.
Background technology
The manual operation motor starter is a kind of low-voltage electrical apparatus commonly used, and it comprises that one can and comprise at least one pair of moving contact and the contact apparatus of fixed contact, contact support, touch spring around operating grip, clutch, linkage, a contact push pedal of the rotation of its axis.Described handle can rotate between contact closure and open position, and clutch is connected between handle and the described linkage, and the rotation of handle is passed to linkage.Described linkage comprises snap close, tripping, top board, energy-stored spring and a plurality of connecting rod.When operating grip rotates, rotation by clutch makes the top board of linkage produce swing, the swing pushing contact push pedal action of top board, the action of contact push pedal drives the contact support and the moving contact action of contact apparatus then, and the action of moving contact makes and realizes between moving contact and the fixed contact disconnecting or closure.When rotary handle rotated to make position, the contact push pedal was lifted, and moving contact contacts closed under the elastic force effect of touch spring with fixed contact; Do not take place under the situation of melting welding at moving contact and fixed contact, when rotary handle rotated to open position, moving contact was depressed in the contact push pedal, thereby moving contact is separated with fixed contact.
Contact melting welding is meant the moving contact that caused by overcurrent and the melting welding between the fixed contact, under the melting welding state, and can not normal separation between moving contact and the fixed contact.Under the situation of contact melting welding, when operating personnel when the manual operation motor starter is carried out opening operation, handle can be rotated to open position, but moving contact and fixed contact still remain closed because of being welded together, this is very dangerous.In order to evade this danger, standard GB 14048.1-2006.7.1.6.1 makes requirement, stipulate that these type of electric equipment products are when carrying out the contact opening operation and melting welding takes place, operating physical force on its handle is in reaching GB14048.1-2006.8.2.5.2.1 before the specified value, handle does not allow to arrive and place open position, to demonstrate existing of melting welding fault, guarantee operating personnel's safety.But in fact, most of in the market product is under the influence of the strain of the artificial contact over travel of reserving and fit tolerance and plastic material, even contact is in the melting welding state, operating grip also can be issued to and is in open position an actuating force effect less than GB standard set-point.
The patent No. is that the patent of invention of ZL200480003806.0 discloses a kind of electro-magnetic circuit breaker, it has one can rotate and act on by driving member the rotating driving device that touches on the abutment bracket between the closed and disconnected position, need not by additional member, touch under the state that bridge and fixed contact melting welding links together described, when rotating driving device when the disjunction position rotates, described driving member is touched abutment bracket and is remained on a position by steering mechanism, on this position, described driving member stops rotating driving device to rotate to open position.Because the effect that this kind circuit breaker stops rotating driving device to rotate to open position is to realize by two profiles that rotating driving device and driving member are provided with, and these two profiles are respectively the muscle that isolates on part separately, its intensity is less, if be used for big specification product, then under bigger operating physical force, the intensity of its muscle can not guarantee reliably that still rotating driving device can not arrive open position when contact melting welding.In addition, these two profiles are when stopping contact, it is axial that a suffered barrier force of profile is wherein arranged, and promptly barrier effect power is installation shaft (transmission axis) axial along this profile, can not moving axially along the transmission axis so require driving member to be installed as.In fact such design exists some unreasonable parts: the one, for realizing that driving member can not move axially, need to increase the axially movable structure of prevention driving member; The 2nd, owing to increased the axially movable structure of prevention driving member, this structure can exert an influence to the rotation flexibility of driving member, thereby can be unfavorable to the transmission performance of transmission mechanism; The 3rd, the suffered axial force of profile is positioned at the profile edge, and the distance that departs from the transmission axis is bigger, so this axial force can form a bigger moment, the transmission axis normal of the fulcrum shaft of this moment and profile, thereby cause the stressed asymmetric of two profiles, and, be unfavorable for the design of product miniaturization because of this torque load need increase the thickness of profile.In addition, the melting welding phenomenon is as long as take place in this kind circuit breaker, no matter the melting welding degree how, its rotating driving device all can not be placed in open position.Yet at present people press for is a kind ofly to guarantee that when the serious melting welding of contact handle can consistently with the contact physical location show, can realize by manual rotating operating handle the manual operation motor starter of the new-type band isolation features of contact disjunction when the slight melting welding of contact.
Summary of the invention
An object of the present invention is to provide a kind of manual operation motor starter with isolation features, when dynamic and static contact generation melting welding can't separate, handle is rested on can be shown on the consistent location with the contact virtual condition, guarantees that handle can't be placed in open position.
Another object of the present invention provides a kind of manual operation motor starter with isolation features, when slight melting welding takes place in dynamic and static contact, making operating personnel pass through feel can perception, and the operating physical force that passes through rotary handle assists to eliminate slight melting welding, make dynamic and static contact recover normal disjunction, handle can be arrived with contact disconnect on the consistent open position of virtual condition demonstration.
A further object of the present invention is structure and the advantage that makes full use of the original transmission performance of transmission mechanism; further optimize and simplify its structure; make project organization very simple and reasonable; can realize meeting the work of national standard in simple, reliable mode; and has a grade up to standard of higher contact melting welding safeguard protection; can the fine designing requirement of satisfying the product miniaturization, and can be applicable to the product of big operating physical force.
To achieve these goals, the manual operation motor starter of band isolation features of the present invention has adopted following technical scheme.
The manual operation motor starter of band isolation features of the present invention comprises:
One can be around the operating grip 1 of its axis rotation, a clutch, a linkage 4, contact push pedal 5 and comprise at least one pair of moving contact and fixed contact 6,7 contact apparatus 100, wherein said operating grip 1 can rotate between contact closure and open position, described clutch is connected between operating grip 1 and the described linkage 4, when operating grip 1 rotation, rotation by clutch, the rotation of handle is passed to linkage 4, when rotary handle rotates to make position A, contact push pedal 5 is lifted, and moving contact 6 contacts closed under the elastic force effect of touch spring 10 with fixed contact 7; Do not take place under the situation of melting welding at moving contact and fixed contact 6,7, when rotary handle rotated to open position B, moving contact 6 was depressed in contact push pedal 5, thereby moving contact and fixed contact 6,7 are separated.Described clutch is by a pair of travelling gear 2 with meshing relation, 3 constitute, described travelling gear 2 is fixed on the Handle axis of operating grip 1, when operating grip 1 rotation, travelling gear 2 is that rotate at the center with the Handle axis with handle, by described travelling gear 3 and the linkage 4 that is connected with travelling gear 3, with the rotary action of handle to contact push pedal 5.A boss 8, be formed on the described travelling gear 2, a blocking surface 31 is formed on the described travelling gear 3, at moving contact and fixed contact 6,7 do not take place under the situation of melting welding, when turning handle 1 is done " closure " or " disjunction " operation, and travelling gear 2,3 engagements, described boss 8 does not contact with blocking surface 31, so that handle 1 can normally enter " connection " position A or " disjunction " position B; When turning handle 1 is done " disjunction " operation, at moving contact and fixed contact 6,7 melting welding take place and add under the formed situation of making a concerted effort of contact melting welding weld force from the formed elastic force that can not overcome touch spring 10 with joint efforts of elastic force that the operating physical force that handle 1 applies adds energy-stored spring 46, boss 8 contacts with blocking surface 31, at boss 8 and blocking surface 31 period of contact, travelling gear 2,3 does not mesh, stop boss 8, travelling gear 2, handle 1 to rotate by blocking surface 31, so that handle 1 can only arrive " melting welding " position C, and can not arrive " disjunction " position B.
Described travelling gear 2 and travelling gear 3 are a pair of conical gears, and be the incomplete gear mechanism that a pair of gear teeth are not covered with circumference, described boss 8 is formed on travelling gear 2 in the face of on the circumference of not taking turns toothed portion of gear 3, and blocking surface 31 is formed on the circumference that is provided with the wheel toothed portion of travelling gear 3 in the face of gear 2.Described conical gear is a spur bevel gear.
Described boss 8 and the blocking surface 31 common position limiting structures of forming, and when boss 8 contacts with blocking surface 31, boss 8 acts on the circumferencial direction that the direction of the active force of blocking surface 31 is rotated along travelling gear 3, and blocking surface 31 acts on the direction of reaction force of boss 8 along the circumferencial direction of the rotation of travelling gear (2).Active force between described boss 8 and the blocking surface 31 and reaction force all are not parallel to the axis of Handle axis or pivot 49, make Handle axis can not increase axial force with contacting of blocking surface 31 because of boss 8 with pivot 49.
Described linkage 4 comprises snap close 41, toggle link 42, tripping 43, connecting rod 44, top board 45, energy-stored spring 46, a pair of mounting panel 47,48, pivot 49, bearing pin 50, snap close axle 51, and each drive disk assembly of this linkage and travelling gear 3 all are installed in this on the mounting panel.The two ends of wherein said pivot 49 are fixedly mounted on this respectively to mounting panel 47, on 48, described travelling gear 3 is installed in pivotally and is on this stage casing part to the pivot between the mounting panel 47,48 49, and the two ends of described toggle link 42 are connected with travelling gear 3, tripping 43 hinges respectively.The two ends of described bearing pin 50 are fixedly mounted on this respectively to mounting panel 47, on 48, described top board 45 is installed in pivotally and is on this stage casing part to the bearing pin between the mounting panel 47,48 50, and the two ends of described connecting rod 44 are connected with top board 45, tripping 43 hinges respectively.One end of described energy-stored spring 46 is connected with top board 45, the other end and two mounting panels 47,48 connect or with two mounting panels 47,48 in one of connect.Described snap close 41 is installed on the snap close axle 51 pivotally, and the two ends of this snap close axle 51 are fixedly mounted on this respectively on the mounting panel 47,48, and its stage casing part is between the mounting panel 47,48; The mode that contacts with pushing between top board 45 and the contact push pedal 5 cooperates and transmission power.
The other end of described energy-stored spring (46) and two mounting panels 47,48 connect by a transition piece and connect, described transition piece two ends be fixedly mounted on this respectively on the mounting panel 47,48.
Described mounting panel 47 or 48 is provided with people's zag trajectory groove 471, allow 431 and one second projectioies 432 of one first projection to insert respectively in the track groove 471, and has fit clearance with track groove 471, wherein said first projection 431 is formed in the tripping 43, perhaps first projection 431 is same body member with toggle link 42, described second projection 432 is formed on the travelling gear 3, and perhaps, second projection 432 is same body member with toggle link 42.Described first projection 431 and toggle link 42 are connected first projection 431 and toggle link 42 and tripping 43 formation hinges for same body member is meant and same body member is made in that termination of passing the hinge hole in the tripping 43; Described second projection 432 and toggle link 42 are connected with travelling gear 3 hinges with toggle link 42 and same body member is made in that termination of passing the hinge hole on the travelling gear 3 second protruding 432 for same body member is meant.
The axis normal of the Handle axis of described operating grip 1 is in the axis of described pivot 49.
Description of drawings
Fig. 1 is the cutaway view of the manual operation motor starter of a band isolation features of the present invention, and starter is in "on" position among the figure.
Fig. 2 is handle, travelling gear, the linkage of the manual operation motor starter of band isolation features of the present invention, the cut-away view of contact apparatus, and the position of each driving member is the position that contact is in closure state among the figure.
Fig. 3 is the left side view of Fig. 2.
Fig. 4 is the right side view of Fig. 2.
Fig. 5 is handle, travelling gear, the linkage of the manual operation motor starter of band isolation features of the present invention, the cut-away view of contact apparatus, and the position of each driving member is the position that contact is in the melting welding state among the figure.
Fig. 6 is the left side view of Fig. 5.
Fig. 7 is handle, travelling gear, the linkage of the manual operation motor starter of band isolation features of the present invention, the cut-away view of contact apparatus, and the position of each driving member is the position that contact is in off-state among the figure.
Fig. 8 is the left side view of Fig. 7.
Fig. 9 is the vertical view of the manual operation motor starter of band isolation features of the present invention, there is shown three positions of rotary handle, comprises make position A, open position B, melting welding position C.
Embodiment
According to following to only provide as non-limitative example and in conjunction with the accompanying drawings shown in the description of the specific embodiment of the present invention, the present invention will become clear more with respect to the exclusive characteristic of aforementioned prior art and advantage and be easier to understand.
Fig. 1 represents to be in a cutaway view of being with the manual operation motor starter of isolation features of the present invention of "on" position.Manual operation motor starter as shown in Figure 1 comprises a clutch that can constitute around the operating grip 1 of its axis rotation, by a pair of travelling gear 2,3 with meshing relation, linkage 4, a contact push pedal 5 and a contact apparatus 100.Described handle 1 is provided with the Handle axis (not shown), and handle 1 is installed on the shell 11 of motor starter pivotally by Handle axis.The outside that described handle 1 is in shell 11 is for manual operation, and an end of Handle axis stretches in the shell 11, is fixed with travelling gear 2 on it, and when turning handle 1, travelling gear 2 is that rotate at the center with the Handle axis with handle 1.Described contact apparatus 100 comprises that at least one is installed in moving contact 6 in the contact support 9, the fixed contact 7 that is provided with moving contact 6 pairings and contact the touch spring 10 that elastic force is provided with the closure of fixed contact 7 for moving contact 6.The quantity of contact support 9 is by the number of poles decision of motor starter, every utmost point is provided with a contact support, three utmost point motor starters as shown in Figure 1 are provided with three contact supports, illustrated contact apparatus is that double-contact touches Biodge device, two same moved further of moving contact that bridge-type is arranged realize the connection/disjunction with two fixed contacts simultaneously.Each fixed contact is connected with the termination (not shown) respectively, so that contact apparatus inserts in the main circuit.The contact apparatus of motor starter of the present invention is not limited to the scheme of double-contact, also can be the single contact form.Touch spring 10, connect with the closure of fixed contact 7 in order to drive moving contact 6, that is to say, act under the situation of contact support 9 at no operating physical force or other external force, touch spring 10 orders about moving contact 6 and fixed contact 7 closed connections automatically, and provides flexible contact force for the closure of moving contact 6 and fixed contact 7.There is following interaction relation between the connection of this contact apparatus/disjunction action: when " disjunction " operated, the tripping operation action of the action of manual operation handle 1 or linkage 4 produces an operating physical force, this operating physical force acts on contact and supports 9, and overcome the elastic force of touch spring 10, make moving contact 6 and fixed contact 7 disjunctions.Be under the disjunction state at motor starter, described operating physical force acts on contact all the time and supports 9.When " combined floodgate " operated, manual operation handle 1 removed linkage 4 to act on contact to support operating physical force on 9, and under the elastic force of touch spring 10 drove, moving contact 6 was connected with fixed contact 7 auto-closings.When contact generation melting welding if carry out breaking operation, no matter the manual operation disjunction still is the tripping operation action of linkage 4, though described operating physical force also acts on contact and supports 9, but when this operating physical force is not enough to overcome the elastic force of the weld force of contact melting welding and touch spring 10, contact support 9 can not be driven mobile, promptly can not order about moving contact 6 and realize disjunction with fixed contact 7.Under the situation that multipole contact is supported, realize the unified interlock that multipole contact is supported by contact push pedal 5, contact push pedal in other words 5 has been controlled multipole contact and has been supported 9 same moved further, promptly the operating physical force from linkage 4 acts on contact push pedal 5 earlier, acts on each contact simultaneously respectively by contact push pedal 5 again and supports 9.Do not take place at contact under the situation of melting welding, apply operating physical force or remove operating physical force to contact push pedal 5 by linkage 4, contact push pedal 5 is produced move, each moving contact 6 is carried out synchronously and the disjunction or the connection of fixed contact 7 thereby drive.Under the situation of contact generation melting welding and breaking operation, because contact melting welding and contact support 9 can not be moved promptly can't be promoted by contact push pedal 5.
Shown in Fig. 2 to 4, the linkage 4 of starter comprises snap close 41, toggle link 42, tripping 43, connecting rod 44, top board 45, energy-stored spring 46 and a pair of mounting panel 47,48.Toggle link 42 has hinged structure as shown in Figure 4: to form about 90 degree crooked with the shaft of toggle link respectively in the termination at toggle link 42 two ends, in the hinge hole on one of them termination insertion travelling gear 3, in the hinge hole in another termination insertion tripping 43, the two ends of toggle link 42 are connected respectively with travelling gear 3, tripping 43 hinges.Connecting rod 44 has hinged structure as shown in Figure 4: to form about 90 degree crooked with the shaft of connecting rod respectively in the termination at connecting rod 44 two ends, in another hinge hole in one of them termination insertion tripping 43, in the hinge hole on another termination insertion top board 45, the two ends of connecting rod 44 are connected respectively with tripping 43, top board 45 hinges.Top board 45 be installed in pivotally between a pair of mounting panel 47,48 and be fixed on the bearing pin 50 on the mounting panel 47,48, that is to say, one end of bearing pin 50 is fixedlyed connected with mounting panel 47, the other end of bearing pin 50 is fixedlyed connected with mounting panel 48, the stage casing part of the bearing pin 50 between two mounting panels 47,48 (referring to be in this to the part between the mounting panel) pivots with top board 45 and is connected, top board 45 can be swung around bearing pin 50, and this swing can push contact push pedal 5 and moves, and the power and the displacement of top board 45 swings passed to contact push pedal 5; Otherwise moving of contact push pedal 5 also can push top board 45 swings, and power and displacement that contact push pedal 5 is moved pass to top board 5.This shows, be to cooperate and transmission power in the mode that pushing contacts between top board 45 and the contact push pedal 5.
The pushing contact of this project organization of the present invention must exist under following three kinds of situations.A kind of situation is the breaking operation process, is meant no matter whether contact melting welding takes place, and exists all the time in the pushing contact described in the overall process of motor starter execution breaking operation, and the masters of this pushing contact is a top board 45.Do not take place at contact under the situation of melting welding, top board 45 can promote pressing plate 45 and move, and under the situation of contact generation melting welding, top board 45 can not promote contact pressing plate 5 and move.This shows, carry out in the breaking operation process, move, then indicate contact generation melting welding fault if top board 45 can not promote contact pressing plate 5 at motor starter.Second kind of situation is that motor starter is in normal disjunction state, and under this state, described pushing contact exists all the time, and masters still is a top board 45.The third situation is the closing operation process, carries out in the course of action of closing operation at motor starter, and described pushing contact also exists, but masters is contact push pedal 5.Yet after motor starter enters closed on-state, it is dissimilar whether also keeping the pushing contact relation between top board 45 and the contact push pedal 5, generally, for the needs that satisfy the moving contact excess of stroke are designed to that a gap is arranged between top board 45 and the contact push pedal 5, under the situation of the two separation, just there is not the relation of pushing contact certainly between them yet.The advantage of the fit system that top board 45 contacts with pushing between the contact push pedal 5 is: when the pushing contact relation exists, can transmit power and displacement between top board 45 and the contact push pedal 45; When the pushing contact relation does not exist, there is not mutual active force between them.
Among Fig. 4, energy-stored spring 46 is elements that actuating force is provided for top board 45 pushing contact push pedals 5.One end of energy-stored spring 46 is connected with top board 45, the other end is connected with mounting panel 47 or mounting panel 48, perhaps the other end of energy-stored spring 46 also can be connected with two mounting panels 47,48, this concrete structure scheme that is connected with two mounting panels 47,48 is: the other end of energy-stored spring 46 and a transition piece are (as connecting pin, not shown) connect, and an end of this transition piece is fixedlyed connected with mounting panel 47, and the other end of this transition piece is fixedlyed connected with mounting panel 48.In contact " closure " operating process of motor starter, manual operation power makes energy-stored spring 46 energy storage by handle 1 through travelling gear 2,3 and linkage 4, this operating process also is linkage 4 removes a process from operating physical force to contact push pedal 5, in this process, because the elastic force effect of touch spring 10, pushing contact relation between top board 45 and the contact push pedal 5 also exists, but masters is contact push pedal 5, i.e. contact push pedal 5 pushing top boards 45.After contact at motor starter entered " closure " state, mechanism's restraining force of linkage 4 overcame the elastic force of energy-stored spring 46, made linkage 4 be in stable state, energy-stored spring 46 keeps energy storage, at this moment, under the elastic force effect of touch spring 10, moving contact 6 and fixed contact 7 closures.In " disjunction " operating process of motor starter, manual operation power is touched snap close 41 by the actuation force that handle 1 moves tripping 43 or tripping mechanism (not shown), mechanism's restraining force of linkage 4 is disintegrated, energy-stored spring 46 releases energy, and drives top board 45 pushing contact push pedals 5.One end of snap close axle 51 is fixed on the mounting panel 47, and the other end is fixed on the mounting panel 48, is in two stage casing parts between the mounting panel and is connected with snap close 41 pivots, snap close 41 is installed on the snap close axle 51 pivotally, thereby snap close 41 can rotate around snap close axle 51.In snap close 41 and tripping 43, be respectively equipped with an interlocking structure that cooperatively interacts, when this structure is in interlocking state, the less action force that 41 pairs of trippings 43 of snap close provide an interlocking to use, this active force makes linkage 4 can form bigger mechanism's restraining force, and this mechanism's restraining force can overcome the elastic force of energy-stored spring 46, and makes linkage 4 be in stable state.Touching snap close 41 when the external force actuation force of trip gear (normally from) makes it when snap close axle 51 rotates, can cause interlocking structure to be converted to released state by interlocking state, under released state, mechanism's restraining force of linkage 4 is disintegrated, cause energy-stored spring 46 to release energy, top board 45 can rotate (unless contact generation melting welding) around bearing pin 50 under the elastic force effect of energy-stored spring 46.
As Fig. 2 or shown in Figure 5, mounting panel 47,48 not only is used for installing connecting rods mechanism 4, but also is used to install travelling gear 3.Handle 1 acts in the contact push pedal 5 by clutch that is made of a pair of travelling gear 2,3 with meshing relation and the linkage 4 that is connected with travelling gear 3.Travelling gear 3 be installed in pivotally this between the mounting panel 47,48 and be fixed on the pivot 49 on the mounting panel 47,48, an end that is pivot 49 is fixed on the mounting panel 47, the other end of pivot 49 is fixed on the mounting panel 48, the center section part branch of pivot 49 is in this between the mounting panel 47,48, a travelling gear 3 is installed on it pivotally, travelling gear 3 can be rotated around pivot 49.Pivot 49 is vertical with the Handle axis (not shown), travelling gear the 2, the 3rd, and a pair of conical gear preferably adopts spur bevel gear, but their gear teeth are not covered with circumference, are a pair of incomplete gear mechanisms.Turning handle 1 then drives the travelling gear 2 that is fixed on the Handle axis and rotates, and under the situation of travelling gear 2 and travelling gear 3 engagements, the rotation of travelling gear 2 then can drive travelling gear 3 and rotate.Since travelling gear the 2, the 3rd, incomplete gear mechanism, thus there is out of mesh situation between them, this out of mesh situation, just in time coupler link mechanism 4 utilizes the elastic force of energy-stored spring to realize the quick disjunction or the closure of contact.Do not take place at contact under the situation of melting welding, the elastic force that can overcome touch spring 10 owing to the elastic force of energy-stored spring 46 moves contact push pedal 5, realizes the disjunction of moving contact 6 and fixed contact 7.But under the situation of contact generation melting welding, the elastic force that the elastic force of energy-stored spring 46 can not overcome touch spring 10 adds the making a concerted effort of weld force of contact melting welding, moves so top board 45 can not promote contact push pedal 5.Yet, making a concerted effort of the weld force of the elastic force of touch spring 10 and contact melting welding, make 5 pairs of top boards 45 of contact push pedal form reaction force, this reaction force not only makes top board 45 remain on a certain position, but also by top board 45, connecting rod 44, tripping 43, the power transmission of toggle link 42, can make travelling gear 3 remain on a certain position, and the position limiting structure that this position is formed by a blocking surface on boss on the appropriate location that is formed on travelling gear 2 and the travelling gear 3, make handle 1 be firmly held in the C place, melting welding position of correspondence shown in Figure 9, this moment, the energy of energy-stored spring 46 can not discharge, and moving contact 6 continues to keep as-welded with fixed contact 7.
As illustrated in Figures 5 and 6, be provided with a boss 8 on travelling gear 2, travelling gear 3 is provided with a blocking surface 31, boss 8 and the described position limiting structure of blocking surface 31 common compositions.Boss 8 is formed on travelling gear 2 in the face of on the circumference of not taking turns toothed portion of gear 3, and blocking surface 31 is formed on the circumference that is provided with the wheel toothed portion of travelling gear 3 in the face of gear 2, so that when travelling gear 2,3 engagements, boss 8 does not contact with blocking surface 31.And at boss 8 and blocking surface 31 period of contact, travelling gear 2,3 does not mesh.By such limiting structure that boss 8 and blocking surface 31 form, guaranteed that the reliable operating grip 1 that stops is rotated normal " disjunction " position of arrival contact by force by steering force when serious melting welding takes place contact.The following describes the operation principle of this structure.Under moving contact 6 and fixed contact 7 no melting welding situations, turning handle 1 is done " closure " or " disjunction " operation, can not cause blocking surface 31 to contact with boss 8, so that handle 1 can normally enter as shown in Figure 9 " closure " position A or " disjunction " position B.Take place under the situation of melting welding at moving contact 6 and fixed contact 7, when turning handle 1 is done " disjunction " operation, can cause blocking surface 31 to contact, so that travelling gear 2 is rested on as shown in Figure 9 " melting welding " position C together with handle 1, and can not arrive " disjunction " position B with boss 8.
The starter internal structure of the correspondence " closure " of showing respectively below in conjunction with accompanying drawing 2 to 8, " disconnection ", " melting welding " further specifies this holding function and how to guarantee to realize.
The closing course of Fig. 2-4 and state
When turning handle 1 during to " closure " position rotary manipulation, handle 1 is by " disjunction " position B shown in Figure 9, forward " closure " position A clockwise to along paper plane shown in Figure 9, the rotating band nutating gear 2 thorny arbor (not shown)s of handle 1 are rotated, travelling gear 2 passes through engaged transmission, driving travelling gear 3 rotates, energy-stored spring 46 energy storage, when handle forwards " closure " position shown in Figure 9 to, mechanism's restraining force of linkage 4 forms automatically, and make linkage 4 be in stable state, this moment travelling gear 2,3 and with the integrally formed boss 8 and blocking surface 31 and linkage 4 of travelling gear 2 that is fixed on the Handle axis, moving contact 6, fixed contact 7 waits the position of each movement parts shown in Fig. 2-4.Arrive " closure " position in " closure " whole operation process up to handle, boss 8 does not contact all the time with blocking surface 31.
Normal disconnection process and the state of Fig. 7-8
When under normal circumstances, turning handle 1 is when the rotary manipulation of " disjunction " position, handle 1 is by " closure " position shown in Fig. 2-4, rotate counterclockwise along paper plane shown in Figure 9, the rotating band nutating gear 2 thorny arbor (not shown)s of handle 1 are rotated, travelling gear 2 passes through engaged transmission, driving travelling gear 3 rotates, the rotation of travelling gear 3 drives toggle link 42, tripping 43 is moved, and cause mechanism's restraining force of linkage 4 to be disintegrated, energy-stored spring 46 releases energy, the elastic force of energy-stored spring 46 drives top board 45 and rotates (rotation direction is a clockwise direction shown in Figure 8) around bearing pin 50, the rotation of top board 45 pushes contact push pedal 5 on the one hand and moves, and make moving contact 6 and fixed contact 7 disjunctions, on the other hand by connecting rod 44, tripping 43, toggle link 42 drives travelling gear 3 and rotates an angle around pivot 49, and arrives position shown in Figure 7.Because travelling gear 3 has rotated an enough big angle, this angle makes blocking surface 31 away from the bigger distance of boss 8, so in " disjunction " whole operation process, boss 8 does not come in contact all the time with blocking surface 31, does not turn to " disjunction " position B shown in Figure 9 thereby do not influence handle 1.The position of each movement parts such as travelling gear 2,3 and boss 8 and blocking surface 31 and linkage 4, moving contact 6, fixed contact 7 is shown in Fig. 7 and 8.
Breaking course and state during the melting welding of Fig. 5-6
When under contact generation welding situation, do " disjunction " operation as turning handle 1, handle 1 is by the contact contact position shown in Fig. 2-4, rotate counterclockwise along paper plane shown in Figure 9, the rotating band nutating gear 2 thorny arbor (not shown)s of handle 1 are rotated, travelling gear 2 passes through engaged transmission, driving travelling gear 3 rotates, the rotation of travelling gear 3 drives toggle link 42, tripping 43 is moved, and causes mechanism's restraining force of linkage 4 to be disintegrated (this mechanism's restraining force disintegrate can also by due to the dropout action of aforesaid tripping mechanism).But, because due to contact melting welding can't separate, top board 45 makes energy-stored spring 46 can not discharge elastic force, top board 45 is by connecting rod 44, tripping 43, toggle link 42 rests on travelling gear 3 restrictions as Fig. 5, position shown in 6, from these two figure contrasts as seen, because travelling gear 3 is remained on a certain fixed position by contact push pedal 5 by linkage 4 restrictions, travelling gear 3 can not rotate enough big angle, make the blocking surface 31 can not be away from the enough big distance of boss 8, so again during turning handle 1, boss 8 contacts with blocking surface 31, blocking surface 31 stops boss 8 motions, limited travelling gear 2 and handle 1 thorny arbor (not shown) is rotated further, handle 1 remains on " melting welding " position C shown in Figure 9.At this moment, because the limiting structure that the present invention forms by boss 8 and blocking surface 31 has enough intensity, so the manual operation power that handle 1 is applied can not overcome the barrier force of blocking surface 31 for boss 8, so can not make handle 1 arrive " disjunction " position shown in Figure 9.Unless under the slighter situation of contact welding, have only the elastic force that can overcome touch spring 10 with joint efforts that adds the elastic force of energy-stored spring 46 when this manual operation power to add making a concerted effort of the slight melting welding weld force of contact, just can force moving contact 6 and fixed contact 7 to break away from slight welding and realize disjunction.
By as seen shown in Figure 6, when described boss 8 and blocking surface 31 contact matching, the direction that boss 8 acts on the active force of blocking surface 31 is the circumferencial direction that rotates around pivot 49 along travelling gear 3, and blocking surface 31 to act on the direction of the reaction force of boss 8 are the circumferencial directions that rotate along the thorny arbors of travelling gear 2, therefore, the active force between boss 8 and the blocking surface 31 and the direction of reaction force are the travelling gears 2 with clutch, the formed active force of engagement is consistent with the direction of reaction force between 3, promptly all be along travelling gear 2,3 circumferencial directions that rotate, this structural design has the different of essence with aforesaid prior art, this difference makes the present invention produce the unexistent functional effect of prior art: when slight melting welding takes place contact, the formed elastic force that generally can overcome touch spring 10 with joint efforts of elastic force that the manual operation power that applies from handle 1 adds energy-stored spring 46 adds that the slight melting welding weld force of contact is formed makes a concerted effort, make moving contact 6 and fixed contact 7 under manual operation, realize disjunction by force, this has improved the safe class of device on the one hand, can know the omen that contact melting welding fault takes place by feel on the other hand.This structural design has also produced the technique effect that is better than prior art: active force between boss 8 and the blocking surface 31 and reaction force all are not parallel to the axis of Handle axis or pivot 49, that is to say that Handle axis can not increase axial force with contacting of blocking surface 31 because of boss 8 with pivot 49, this makes by travelling gear 2,3, the structure of the transmission mechanism that Handle axis and pivot 49 are formed is very simple, travelling gear 2,3 rotation flexibility is fine, there is not the distortion of the parts such as casing due to the axial force, the miniaturization Design that helps product, and can be applicable to the big specification product that operating physical force is big.
For the big specification product that is applicable to that better operating physical force is big, shown in Fig. 3,6,8, apparatus of the present invention are provided with people's zag trajectory groove 471 on mounting panel 47, allow 431 and one second projectioies 432 of one first projection to insert respectively in the track groove 471.Described first projection 431 is formed in the tripping 43, perhaps, first projection 431 is formed that termination that is connected with toggle link 42 with tripping 43 make same body member, and promptly first projection 431 is same body member with toggle link 42.When be same body member, its mounting structure is at first projection 431 and toggle link 42: insert in the track groove 471 after passing hinge hole in the tripping 43 toggle link 42 and tripping 43 hinged those terminations again.Described second projection 432 is formed on the travelling gear 3, perhaps, makes same body member with second protruding 432 with that termination that toggle link 42 is connected with travelling gear 3, and promptly second projection 432 is same body member with toggle link 42.When be same body member, its mounting structure is at second projection 432 and toggle link 42: track groove 471 is inserted after passing hinge hole on the travelling gear 3 again in toggle link 42 and travelling gear 3 hinged those terminations.By controlling the fit clearance of described two projectioies 432,431 and track groove 471, can improve the kinematic accuracy of linkage 4, also can reduce the site error and the deformation of each movement parts of big operating physical force lower link mechanism 4.
What should be understood that is, above-mentioned execution mode is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (10)
1. manual operation motor starter with isolation features, it comprises that one can and comprise at least one pair of moving contact and fixed contact (6 around operating grip (1), clutch, a linkage (4), a contact push pedal (5) of the rotation of its axis, 7) contact apparatus (100), wherein
Described operating grip (1) can rotate between contact closure and open position, described clutch is connected between operating grip (1) and the described linkage (4), when operating grip (1) rotates, rotation by clutch, the rotation of handle is passed to linkage (4), when rotary handle rotated to make position A, contact push pedal (5) was lifted, and moving contact (6) contacts closed under the elastic force effect of touch spring (10) with fixed contact (7); Do not take place under the situation of melting welding at moving contact and fixed contact (6,7), when rotary handle rotated to open position B, moving contact (6) was depressed in contact push pedal (5), thereby moving contact and fixed contact (6,7) are separated,
It is characterized in that:
Described clutch is by a pair of travelling gear (2 with meshing relation, 3) constitute, described travelling gear (2) is fixed on the Handle axis of operating grip (1), when operating grip (1) rotates, travelling gear (2) is that rotate at the center with the Handle axis with handle, by described travelling gear (3) and the linkage (4) that is connected with travelling gear (3), with the rotary action of handle to contact push pedal (5)
A boss 8, be formed on the described travelling gear 2, a blocking surface 31 is formed on the described travelling gear 3, do not take place under the situation of melting welding at moving contact and fixed contact (6,7), when turning handle (1) is done " closure " or " disjunction " operation, travelling gear 2,3 engagements, described boss (8) does not contact with blocking surface (31), so that handle (1) can normally enter " connection " position A or " disjunction " position B
When turning handle (1) is done " disjunction " operation, at moving contact and fixed contact (6,7) melting welding takes place, and the formed elastic force that can not overcome touch spring (10) with joint efforts of elastic force that adds energy-stored spring 46 from the operating physical force that handle (1) applies adds under the formed situation of making a concerted effort of contact melting welding weld force, boss (8) contacts with blocking surface (31), at boss 8 and blocking surface 31 period of contact, travelling gear 2,3 do not mesh, stop boss (8) by blocking surface (31), travelling gear (2), handle (1) rotates, so that handle (1) can only arrive " melting welding " position C, and can not arrive " disjunction " position B.
2. starter according to claim 1, it is characterized in that, described travelling gear (2) and travelling gear (3) are a pair of conical gears, and be the incomplete gear mechanism that a pair of gear teeth are not covered with circumference, described boss 8 is formed on travelling gear 2 in the face of on the circumference of not taking turns toothed portion of gear 3, and blocking surface 31 is formed on the circumference that is provided with the wheel toothed portion of travelling gear 3 in the face of gear 2.
3. starter according to claim 1 and 2, it is characterized in that, described boss 8 and the blocking surface 31 common position limiting structures of forming, and at boss (8) and blocking surface (31) when contacting, boss (8) acts on the circumferencial direction that the direction of the active force of blocking surface (31) is rotated along travelling gear (3), and blocking surface (31) acts on the direction of reaction force of boss (8) along the circumferencial direction of the rotation of travelling gear (2).
4. starter according to claim 3, it is characterized in that, active force between described boss 8 and the blocking surface 31 and reaction force all are not parallel to the axis of Handle axis or pivot 49, make Handle axis can not increase axial force with contacting of blocking surface 31 because of boss 8 with pivot 49.
5. starter according to claim 2 is characterized in that described conical gear is a spur bevel gear.
6. starter according to claim 1, it is characterized in that, described linkage (4) comprises snap close (41), toggle link (42), tripping (43), connecting rod (44), top board (45), energy-stored spring (46), a pair of mounting panel (47,48), pivot (49), bearing pin (50), snap close axle (51), wherein
The two ends of described pivot (49) are fixedly mounted on this respectively to mounting panel (47,48) on, described travelling gear (3) is installed in pivotally and is in this to mounting panel (47, on the stage casing part of the pivot 48) (49), the two ends of described toggle link (42) are connected with travelling gear (3), tripping (43) hinge respectively
The two ends of described bearing pin (50) are fixedly mounted on this respectively to mounting panel (47,48) on, described top board (45) is installed in pivotally and is in this to mounting panel (47, on the stage casing part of the bearing pin 48) (50), the two ends of described connecting rod (44) are connected with top board (45), tripping (43) hinge respectively
One end of described energy-stored spring (46) is connected with top board (45), the other end and two mounting panels (47,48) connect or with two mounting panels (47,48) in one of connect;
Described snap close (41) is installed on the snap close axle (51) pivotally, and the two ends of this snap close axle (51) are fixedly mounted on this respectively on the mounting panel (47,48), and its stage casing part is between the mounting panel (47,48);
The mode that contacts with pushing between top board (45) and the contact push pedal (5) cooperates and transmission power.
7. starter according to claim 6, it is characterized in that the other end of described energy-stored spring (46) and two mounting panels (47,48) connect by a transition piece and connect, described transition piece two ends be fixedly mounted on this respectively on the mounting panel (47,48).
8. starter according to claim 6, it is characterized in that described mounting panel 47 or 48 is provided with people's zag trajectory groove 471, allow 431 and one second projectioies 432 of one first projection to insert respectively in the track groove 471, and has fit clearance with track groove 471, wherein
Described first projection 431 is formed in the tripping 43, and perhaps first projection 431 is same body member with toggle link 42,
Described second projection 432 is formed on the travelling gear 3, and perhaps, second projection 432 is same body member with toggle link 42.
9. starter according to claim 8, it is characterized in that described first projection 431 and toggle link 42 are connected first projection 431 and toggle link 42 and tripping 43 formation hinges for same body member is meant and same body member is made in that termination of passing the hinge hole in the tripping 43; Described second projection 432 and toggle link 42 are connected with travelling gear 3 hinges with toggle link 42 and same body member is made in that termination of passing the hinge hole on the travelling gear 3 second protruding 432 for same body member is meant.
10. starter according to claim 1 is characterized in that, the axis normal of the Handle axis of described operating grip (1) is in the axis of described pivot (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010284540 CN101938233B (en) | 2010-09-17 | 2010-09-17 | Manual operation motor starter with isolation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010284540 CN101938233B (en) | 2010-09-17 | 2010-09-17 | Manual operation motor starter with isolation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101938233A true CN101938233A (en) | 2011-01-05 |
| CN101938233B CN101938233B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010284540 Active CN101938233B (en) | 2010-09-17 | 2010-09-17 | Manual operation motor starter with isolation function |
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| CN (1) | CN101938233B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022690A (en) * | 2014-06-25 | 2014-09-03 | 台安科技(无锡)有限公司 | Instantaneous throw-in device for operating mechanism of manually operated motor starter |
| WO2016173462A1 (en) * | 2015-04-28 | 2016-11-03 | 上海电科电器科技有限公司 | Fusion welding isolation mechanism for operating mechanism of circuit breaker |
| CN107369594A (en) * | 2016-05-11 | 2017-11-21 | 上海诺雅克电气有限公司 | Motor protection breaker |
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| GB2127224A (en) * | 1982-03-30 | 1984-04-04 | Mannesmann Ag | A contactor for the control of electric motors |
| US5753984A (en) * | 1995-03-29 | 1998-05-19 | Switched Reluctance Drives Limited | Apparatus and method for starting a single-phase variable reluctance motor |
| CN101145745A (en) * | 2006-09-15 | 2008-03-19 | 西门子公司 | Motor starter |
| CN201878064U (en) * | 2010-09-17 | 2011-06-22 | 上海诺雅克电气有限公司 | Manual operation motor starter with isolation function |
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| US3987382A (en) * | 1975-07-22 | 1976-10-19 | I-T-E Imperial Corporation | Unitized motor starter |
| GB2127224A (en) * | 1982-03-30 | 1984-04-04 | Mannesmann Ag | A contactor for the control of electric motors |
| US5753984A (en) * | 1995-03-29 | 1998-05-19 | Switched Reluctance Drives Limited | Apparatus and method for starting a single-phase variable reluctance motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022690A (en) * | 2014-06-25 | 2014-09-03 | 台安科技(无锡)有限公司 | Instantaneous throw-in device for operating mechanism of manually operated motor starter |
| CN104022690B (en) * | 2014-06-25 | 2016-05-11 | 台安科技(无锡)有限公司 | The instantaneous feeding device of manual motor starter operating mechanism |
| WO2016173462A1 (en) * | 2015-04-28 | 2016-11-03 | 上海电科电器科技有限公司 | Fusion welding isolation mechanism for operating mechanism of circuit breaker |
| US10332715B2 (en) | 2015-04-28 | 2019-06-25 | Seari Electric Technology Co., Ltd. | Fusion welding isolation mechanism for operation mechanism of circuit breaker |
| CN107369594A (en) * | 2016-05-11 | 2017-11-21 | 上海诺雅克电气有限公司 | Motor protection breaker |
| CN107369594B (en) * | 2016-05-11 | 2019-10-11 | 上海诺雅克电气有限公司 | Motor protection breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101938233B (en) | 2012-12-19 |
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Application publication date: 20110105 Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of invention: Manually operated motor starter with isolation function Granted publication date: 20121219 License type: Common License Record date: 20211025 |
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