CN204270905U - The contact system of automatic change-over - Google Patents
The contact system of automatic change-over Download PDFInfo
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- CN204270905U CN204270905U CN201420811581.2U CN201420811581U CN204270905U CN 204270905 U CN204270905 U CN 204270905U CN 201420811581 U CN201420811581 U CN 201420811581U CN 204270905 U CN204270905 U CN 204270905U
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Abstract
A contact system for automatic change-over, belongs to low voltage electrical apparatus technology field.Automatic change-over comprises pedestal, transmission mechanism, arc-extinguishing mechanism and face terminals, contact system comprises quiet, moving contact component, feature: the shape of moving contact is in T shape, moving contact supporting mass is configured to by this T-shaped vertical portion, this moving contact supporting mass is bearing in rotating shaft, moving contact force-increasing mechanism comprises pressing plate, first, second spring assembly, pressing plate is being connected with rotating shaft corresponding to the position above moving contact, first, second spring assembly is arranged between pressing plate and moving contact with the state faced each other or is arranged between rotating shaft and moving contact, pressing plate is also corresponding with moving contact supporting mass, first, second spring assembly corresponds respectively to the both sides of moving contact supporting mass.Meet and need switch requirement to normal, complying with of stand-by power supply; Designs simplification; The driving-energy needed for moving contact component can be made to reach balance, ensure that the Reliability of Microprocessor of system.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, is specifically related to a kind of contact system of automatic change-over.
Background technology
The function of automatic change-over (english abbreviation is: ATSE) is for load provides uninterrupted power supply, specifically, can switch between stand-by power supply and conventional power supply, to ensure the continuity of power supply, stand-by power supply is as the self-generating power source of electricity consumption department, and conventional power supply is as the external power source of power supply department.
Contact pressure is an important parameter of automatic change-over, when fault current to flow through the major loop of switch as short circuit current, very large electrodynamic repulsion force can be produced between dynamic and static contact, if contact pressure is less than electrodynamic repulsion force, so dynamic and static contact there will be to be shaken up and down, cause electric arc, then cause contact burning, adhesion, thus contact pressure must meet reliable contacts between dynamic and static contact and use the requirement of avoiding shaking.But, contact pressure is also not the bigger the better, because excessive contact pressure needs transmission mechanism to provide enough large energy to drive, so impact the life-span of transmission mechanism, and be unfavorable for energy-conservation, it can thus be appreciated that suitable contact pressure is the key factor whether rational in infrastructure of the contact system considering automatic change-over.
The technical information of automatic change-over can be seen in disclosed Chinese patent literature, typical " a kind of automatic transfer switching electric appliance " recommended as Authorization Notice No. CN202405134U, the content of the 0022nd section, the specification of this patent is: " automatic transfer switching electric appliance be mainly used in realizing electric power system from conventional electrical source exchange to stand-by power supply process the overlap of N level change.It comprises for drawing the first moving contact draw-gear that conventional power supply N level moving contact and conventional power supply N level fixed contact disconnect and for drawing the second moving contact draw-gear that stand-by power supply N level moving contact and stand-by power supply N level fixed contact disconnect.Wherein, first moving contact draw-gear is fixedly connected with stand-by power supply square shaft, and be rotationally connected by a N level connecting rod and conventional power supply square shaft, the second moving contact draw-gear is fixedly connected with conventional power supply square shaft, and is rotationally connected by the 2nd N level connecting rod and stand-by power supply square shaft ".According to this section of explanatory note and in conjunction with related content, the technique effect that the 0016th section, the specification that substantially can confirm this patent is recorded, but there is following shortcoming: due to for often, two-way power supply for subsequent use adopts corresponding moving contact (namely often aforesaid separately, stand-by power supply N level moving contact), thus cause contact system structure complicated, parts are many, the drawback brought thus shows as: not only manufacturing cost is high, and parts variation probability is large and factor is many in assembling process, especially, in the use procedure of reality, conventional contact, the consistency effect of the contact pressure of contact for subsequent use is difficult to the effect reaching industry expectation, that is do not provide and how correctly apply contact pressure and the technology enlightenment of using the reliability improving automatic change-over.In addition, since contact is symmetric, and associated mechanisms is also arranged symmetrically, and so adopts two to overlap independently normal, stand-by power supply moving contact and seems to lose rationally.
Authorization Notice No. CN100517534C provides " contact system of automatic transfer switching electric appliance ", two moving contacts are designed to blade type plug-in type moving contact and finger-type clapper-type fixed contact by this patent formula respectively, and two fixed contacts are designed to respectively blade type plug-in type fixed contact and finger-type clapper-type fixed contact, the positive effect of this patent formula is: utilize the mutual compensation of the electronic suction of node of the node electrodynamic repulsion force of finger-type clapper-type contact and blade type plug-in type contact and use the short resistance to ability improving device for switching, but use for being intended to adopt form of springs the mentality of designing improving contact pressure and not there is referential enlightening significance.
For above-mentioned prior art, the applicant has done useful design, and defines technical scheme described below.
Summary of the invention
Task of the present utility model is to provide a kind of and contributes to making same moving contact to tackle conventional switching between power supply and stand-by power supply and use and reduce moving contact number and remarkable simplified structure and then meet and conveniently manufacture with matching requirements, be conducive to correctly applying contact pressure and be able to be compensated by the spring force of opening side while strengthening closed side contact pressure and use and the driving-energy needed for contact assembly reached balance and improve the contact system of the automatic change-over of the Reliability of Microprocessor of system.
Task of the present utility model has been come like this, a kind of contact system of automatic change-over, described automatic change-over comprises a pedestal, one is arranged on pedestal and is positioned at the transmission mechanism of the side of the length direction of pedestal, be arranged on equally the quantity on pedestal equal with the quantity of the number of poles of automatic change-over and the arc-extinguishing mechanism be respectively made up of the first arc control device and the second arc control device and be fixed on pedestal back and the face terminals that quantity is equal with the quantity of the number of poles of automatic change-over, wherein: the first arc control device are positioned at one end of pedestal, second arc control device are positioned at the other end of pedestal, and first, the position of the second arc control device corresponds to each other, described contact system comprises and is arranged on described pedestal and the static contact component that quantity is equal with the quantity of the number of poles of described automatic change-over and moving contact component, static contact component comprise the first fixed contact of being fixed on pedestal one end be fixed on the pedestal other end and the second fixed contact that position is corresponding with the first fixed contact, moving contact component comprises a rotating shaft, be arranged on the moving contact equal with the quantity of the number of poles of automatic change-over of the quantity in rotating shaft equal with the quantity of moving contact with quantity for applying towards the moving contact force-increasing mechanism of the active force in the direction of described static contact component to moving contact, rotating shaft is corresponding to described first, position between second arc control device is bearing on described pedestal rotationally, and be connected with described transmission mechanism, moving contact is arranged in rotating shaft, make moving contact described first by transmission mechanism drives rotating shaft, change between second fixed contact, it is characterized in that: the shape of described moving contact is in T shape, moving contact supporting mass is configured to by this T-shaped vertical portion, this moving contact supporting mass is bearing in described rotating shaft, described moving contact force-increasing mechanism comprises pressing plate, first spring assembly and the second spring assembly, pressing plate is being connected with described rotating shaft corresponding to the position above described moving contact, and correspond to first, between second spring assembly, and first, second spring assembly is arranged between pressing plate and moving contact with the state faced each other or is arranged between rotating shaft and moving contact, wherein: described pressing plate is also corresponding with described moving contact supporting mass, and described first, second spring assembly corresponds respectively to the both sides of moving contact supporting mass.
In a specific embodiment of the present utility model, described moving contact comprises the first moving contact limb and the second moving contact limb, first, second moving contact limb is merged with aspectant state each other and links together, one first moving contact limb support lug is extended with on the first moving contact limb and corresponding to the position of described rotating shaft, and equally one second moving contact limb support lug is extended with in the position corresponding to rotating shaft on the second moving contact limb, first, second moving contact limb support lug corresponds to each other, and by first, the mutual merging of the second moving contact limb support lug and be configured to described moving contact supporting mass, the first moving contact is provided with in one end corresponding to described first fixed contact of the first moving contact limb, the second moving contact is provided with in one end corresponding to described second fixed contact of the first moving contact limb, and be provided with the 3rd moving contact in one end corresponding to the first fixed contact of the second moving contact limb, the 4th moving contact is provided with in one end corresponding to the second fixed contact of the second moving contact limb, first, 3rd moving contact sticks together mutually, second, 4th moving contact sticks together mutually, support slot is offered in described rotating shaft and corresponding to the position of described moving contact supporting mass, in the middle position of this support slot and be positioned at bottom offer one with the extraneous radial direction through hole communicated, described moving contact matches with described support slot, and by described first, the described moving contact supporting mass that second moving contact limb support lug merges and jointly forms inserts described radial direction through hole and described face terminals is electrically connected.
In another specific embodiment of the present utility model, be fixed with a moving contact central shaft on first, second described moving contact limb and corresponding to the position of described support slot, the two ends of this moving contact central shaft are bearing on the corresponding cell wall of support slot respectively.
In another specific embodiment of the present utility model, the first described spring assembly comprises the first stage clip upper connecting base, the first stage clip and the first stage clip lower connecting base, first stage clip upper connecting base pivot is arranged on described pressing plate, the upper end of the first stage clip is fixed on the first stage clip upper connecting base, the lower end of the first stage clip is fixed on the first stage clip lower connecting base, and the first stage clip lower connecting base is hinged on described moving contact in the position of the side corresponding to described moving contact central shaft; The second described spring assembly comprises the second stage clip upper connecting base, the second stage clip and the second stage clip lower connecting base, second stage clip upper connecting base pivot under the state corresponding with described first stage clip upper connecting base is arranged on pressing plate, the upper end of the second stage clip is fixed on the second stage clip upper connecting base, the lower end of the second stage clip is fixed on the second stage clip lower connecting base, and the second stage clip lower connecting base is hinged on moving contact in the position of the opposite side corresponding to described moving contact central shaft.
In another specific embodiment of the present utility model, the first described spring assembly comprises the first extension spring and the 3rd extension spring, the upper end of this first extension spring is hung on described first moving contact limb back to the side of described second moving contact limb and corresponds to the side of described moving contact central shaft, and lower end is hung in described rotating shaft, 3rd extension spring is corresponding with the first described extension spring, and the upper end of the 3rd extension spring is hung on the side of the second moving contact limb back to the first moving contact limb, and lower end is hung in rotating shaft; The second described spring assembly comprises the second extension spring and the 4th extension spring, the upper end of this second extension spring is hung on described first moving contact limb back to the side of described second moving contact limb and corresponds to the opposite side of described moving contact central shaft, and lower end is hung in described rotating shaft, 4th extension spring is corresponding with the second described extension spring, and the upper end of the 4th extension spring is hung on the side of the second moving contact limb back to the first moving contact limb, and lower end is hung in rotating shaft.
Also have in a specific embodiment of the present utility model, a shaft support spindle nose is respectively configured with at the two ends of rotating shaft, rotating shaft installs in the axle sleeve of transmission mechanism towards the shaft support spindle nose pivot of one end of described transmission mechanism, described pedestal is provided with a bearing pedestal in the position of the other end corresponding to described rotating shaft, this bearing pedestal is furnished with a pedestal cap, the supporting spindle nose of the other end of rotating shaft is bearing on bearing pedestal rotationally by rolling bearing, and is limited by described pedestal cap.
More of the present utility model and in a specific embodiment, be fixed with an idle pulley in described rotating shaft towards one end of described transmission mechanism, this idle pulley is in transmission connection with eccentric state and transmission mechanism.
In an of the present utility model and then specific embodiment, first, second described stage clip forms splayed relation each other.
Of the present utility model again more and in a specific embodiment, be configured with diameter at the length direction of described rotating shaft with space state and be greater than the diameter of rotating shaft and the separator disc in disc shape, the first extension spring steady pin and the second extension spring steady pin is provided with between two adjacent separator discs, described first extension spring steady pin and the second extension spring steady pin correspondence point are located at the both sides of described moving contact central shaft, the lower end of described first extension spring and the 3rd extension spring is hung on the first extension spring steady pin, the lower end of described second extension spring and the 4th extension spring is hung on the second extension spring steady pin.
One of technique effect of the technical scheme that the utility model provides, because the same moving contact of moving contact component can switch between first, second fixed contact, thus can meet and need switch requirement to normal, complying with of stand-by power supply; Two, due to same moving contact often can tackle, switching between stand-by power supply, therefore the number of moving contact is reduced, and structure is significantly simplified, not only easily manufactured, and assembles simple and direct; Three, first, second spring assembly due to the moving contact force-increasing mechanism of the structural system by moving contact component corresponds respectively to the both sides of moving contact supporting mass, thus the driving-energy needed for moving contact component can be made to reach balance, ensure that the Reliability of Microprocessor of system.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of the contact system of the utility model automatic change-over.
Fig. 2 is the exploded view of Fig. 1.
Fig. 3 is the first example structure figure of the moving contact component of Fig. 1 and Fig. 2 signal.
The schematic diagram when moving contact that Fig. 4 is the moving contact component shown in Fig. 1 with Fig. 2 is scolded out with the first fixed contact of static contact component and just contacts with the second fixed contact.
Fig. 5 is in the schematic diagram of abundant contact condition each other for the moving contact shown in Fig. 4 and the second fixed contact.
Fig. 6 is the second example structure figure of the moving contact component of Fig. 1 and Fig. 2 signal.
The schematic diagram when moving contact that Fig. 7 is the moving contact component of structure shown in Fig. 6 is scolded out with the first fixed contact of static contact component and just contacts with the second fixed contact.
Fig. 8 is in the schematic diagram of abundant contact condition each other for the moving contact shown in Fig. 7 and the second fixed contact.
Embodiment
In order to enable the auditor of Patent Office especially the public clearly understand technical spirit of the present utility model and beneficial effect, applicant will elaborate below by way of example, but not all the restriction to the utility model scheme to the description of embodiment, any according to being only pro forma but not substantial equivalent transformation and all should being considered as the technical solution of the utility model category done by the utility model design.
Everyly in the following description relate to upper and lower, left and right, the concept of directivity (or claim directionality) of front and rear is all for the location status residing for the figure be described, object is to facilitate public understanding, thus can not be understood as being particularly limited to the technical scheme that the utility model provides.
Embodiment 1:
Refer to Fig. 1 and Fig. 2, show a pedestal 1 of the structural system belonging to automatic change-over in fig. 1 and 2, one is arranged on pedestal 1 and is positioned at side (i.e. Fig. 1 of the length direction of pedestal 1, the rear side of location status shown in Fig. 2) and correspond to the transmission mechanism 2 of middle position of this side of pedestal 1 substantially, (the present embodiment is four poles to be arranged on the quantity of the number of poles of quantity on pedestal 1 and automatic change-over equally, as follows) equal and arc-extinguishing mechanism 3 that is that be respectively made up of the first arc control device 31 and the second arc control device 32 and be fixed on pedestal 1 back and the face terminals 4(that quantity is equal with the quantity of the number of poles of automatic change-over also can claim load connection terminal), wherein: the first arc control device 31 are positioned at one end of pedestal 1, namely Fig. 1 is positioned at, the left end of location status shown in Fig. 2, namely the other end that second arc control device 32 are positioned at pedestal 1 is positioned at the right-hand member of location status shown in Fig. 1 and Fig. 2, and first, second arc control device 31, the position of 32 corresponds to each other.
Please continue to refer to Fig. 1 and Fig. 2, also show static contact component 5 and the moving contact component 6 of the structural system belonging to contact system of the present utility model in fig. 1 and 2, dynamic and static contact assembly 6,5 is arranged on pedestal 1, and the quantity of static contact component 5 is equal with the quantity of the number of poles of automatic change-over, that static contact component 5 comprises the first fixed contact 51 of being fixed on pedestal 1 one end (left end) and is fixed on pedestal 1 other end (right-hand member) and the second fixed contact 52 that position is corresponding with the first fixed contact 51.
Refer to Fig. 3 and composition graphs 1 and Fig. 2, aforesaid moving contact component 6 comprises a rotating shaft 61, be arranged on the moving contact equal with the quantity of the number of poles of automatic change-over of the quantity in rotating shaft 61 2 equal with the quantity of moving contact 62 with quantity for applying towards the moving contact force-increasing mechanism 63 of the active force in the direction of aforementioned static contact component 5 to moving contact 62, rotating shaft 61 is corresponding to aforementioned first, second arc control device 31, namely position between 32 corresponds to first, second fixed contact 51, position between 52 is bearing on described pedestal 1 rotationally, and be in transmission connection with aforesaid transmission mechanism 2, moving contact 62 is arranged in rotating shaft 61, make moving contact 62 aforesaid first by transmission mechanism 2 drives rotating shaft 61, second fixed contact 51, switch between 52.
Please see Fig. 3 by emphasis, the technical essential as the technical scheme that the utility model provides: the shape of aforementioned moving contact 62 is in T shape, be configured to moving contact supporting mass by this T-shaped vertical portion, this moving contact supporting mass is bearing on aforementioned rotation axis 61.Aforesaid moving contact force-increasing mechanism 63 comprises pressing plate 631, first spring assembly 632 and the second spring assembly 633, pressing plate 631 is being connected with aforementioned rotation axis 61 with pressing plate hold-down screw 634 corresponding to the position above described moving contact 62, and correspond between first, second spring assembly 632,633, more precisely correspond between first, second stage clip 6322,6332 will mentioned below, and first, second spring assembly 632,633 is arranged between pressing plate 631 and moving contact 62 with the state faced each other.Wherein: pressing plate 631 is also corresponding with aforementioned moving contact supporting mass, and first, second spring assembly 632,633 aforesaid corresponds respectively to the both sides of moving contact supporting mass.
Emphasis is shown in Fig. 3, aforesaid moving contact 62 comprises the first moving contact limb 621 and the second moving contact limb 622, first, second moving contact limb 621, the shape of 622 and construct identical and be merged with aspectant state each other and link together, one first moving contact limb support lug 6211 is extended with on the first moving contact limb 621 and corresponding to the position of aforementioned rotation axis 61, and equally one second moving contact limb support lug 6221 is extended with in the position corresponding to rotating shaft 61 on the second moving contact limb 622, first, second moving contact limb support lug 6211, 6221 correspond to each other, and by first, second moving contact limb support lug 6211, the mutual merging of 6221 and be configured to above mentioned moving contact supporting mass, the first moving contact 6212 is provided with in one end corresponding to the first fixed contact 51 of the first moving contact limb 621, the second moving contact 6213(is provided with as Fig. 5) in one end corresponding to the second fixed contact 52 of the first moving contact limb 621, and be provided with the 3rd moving contact 6222 in one end corresponding to the first fixed contact 51 of the second moving contact limb 622, the 4th moving contact 6223 is provided with in one end corresponding to the second fixed contact 52 of the second moving contact limb 622, first, 3rd moving contact 6212, 6222 stick together mutually, second, 4th moving contact 6213, 6223 stick together mutually, in rotating shaft 61 and correspond to aforementioned moving contact supporting mass position namely correspond to first, second moving contact limb support lug 6211, the position of 6221 offers support slot 611, in the middle position of this support slot 611 and be positioned at bottom offer one with the extraneous radial direction through hole 6111 communicated, aforementioned moving contact 62 matches with support slot 611, and by aforementioned first, second moving contact limb support lug 6211, 6221 merge and the moving contact supporting mass that jointly forms inserts radial direction through hole 6111 and is electrically connected with aforesaid face terminals 4.
As shown in Figure 3, on first, second moving contact limb 621,622 aforesaid and corresponding to the position of support slot 611, be fixed with a moving contact central shaft 623, the two ends of this moving contact central shaft 623 are bearing on the central shaft spindle nose support slot 6231 on the corresponding cell wall of support slot 611 respectively.
Still see Fig. 3, aforesaid first spring assembly 632 comprises the first stage clip upper connecting base 6321, first stage clip 6322 and the first stage clip lower connecting base 6323, first stage clip upper connecting base 6321 is arranged on aforesaid pressing plate 631 by bearing pin pivot, the upper end of the first stage clip 6322 is fixed on the first stage clip upper connecting base 6321, the lower end of the first stage clip 6322 is fixed on the first stage clip lower connecting base 6323, and the first stage clip lower connecting base 6323 is hinged on moving contact 62 in the position (position of the rear side of location status shown in Fig. 3) of the side corresponding to aforementioned moving contact central shaft 623 by lower connecting base bearing pin 63231, aforesaid second spring assembly 633 comprises the second stage clip upper connecting base 6331, second stage clip 6332 and the second stage clip lower connecting base 6333, second stage clip upper connecting base 6331 is arranged on pressing plate 631 by bearing pin pivot under the state corresponding with the first stage clip upper connecting base 6321, the upper end of the second stage clip 6332 is fixed on the second stage clip upper connecting base 6331, the lower end of the second stage clip 6332 is fixed on the second stage clip lower connecting base 6333, and the second stage clip lower connecting base 6323 is hinged on moving contact 62 by Connection Block bearing pin 63331 in the position (position of the front side of location status shown in Fig. 3) of the opposite side corresponding to moving contact central shaft 623.As shown in Figure 3, because first, second stage clip upper connecting base 6321,6331 aforesaid is each other in splay position relationship, thus first, second stage clip 6322,6332 is also mutually in splay position relationship.
In the present embodiment, the pressing plate 631 repeatedly mentioned above is configured to have crest and trough and crest and trough are one every the structure of a distributions.First, second stage clip upper connecting base 6321,6331 aforesaid in the position of crest with aspectant state and pressing plate 631 hinged, and pressing plate 631 is connected with rotating shaft 61 corresponding to the position of trough by aforesaid pressing plate hold-down screw 634.
Please continue to refer to Fig. 1 and Fig. 2 and composition graphs 3, aforesaid pedestal 1 is respectively provided with a bearing pedestal 11 in the position at two ends corresponding to rotating shaft 61, this bearing pedestal 11 is furnished with a pedestal cap 111, a shaft support spindle nose 612 is respectively configured with at the two ends of rotating shaft 61, this shaft support spindle nose 612 is bearing on bearing pedestal 11 rotationally by rolling bearing 6121, and is limited by pedestal cap 111.Shown by idle pulley hold-down screw 6132(Fig. 3 in rotating shaft 61 one end towards aforementioned drive mechanism 2) be fixed with an idle pulley 613, this idle pulley 613 is in transmission connection with eccentric state and transmission mechanism 2.Axle sleeve 22(Fig. 2 that rotating shaft 61 installs to transmission mechanism 2 towards the spindle nose pivot of one end of transmission mechanism 2 shows) in, rotating shaft 61 rotatably support is located, the output shaft head of the output shaft of transmission mechanism 2 is provided with and exports bearing 21, this output bearing 21 probes in the idle pulley hole 6131 that is opened on idle pulley 613, idle pulley 613 is made to realize being connected with the bias of transmission mechanism 2, make transmission mechanism 2 be driven rotating shaft 61 action of moving contact component 6, thus make moving contact 62 conversion between normal, stand-by power supply (namely switching).
Refer to Fig. 4, Fig. 4 illustrates moving contact 62 and has just touched the second fixed contact 52 into standby electricity source, and when mechanism continues motion, because dynamic and static contact contacts, moving contact 62 will keep inactive state for pedestal 1, and rotating shaft 61 will be rotated further.
Refer to Fig. 5, the guide post on the first stage clip upper connecting base 6321 and the first stage clip lower connecting base 6323 is close to each other, and the first stage clip 6322 will be compressed, and the second stage clip 6332 is released simultaneously.Rotated along respective pivot pin by the first stage clip upper connecting base 6321 in the process compressed and the first stage clip lower connecting base 6323 at the first stage clip 6322, because the first stage clip upper connecting base 6321 and the first stage clip lower connecting base 6323 are all rotate, so the first stage clip 6322 can not bend all the time in whole process, the direction always along center line M is further compressed.Contrary, in the d/d process of the second stage clip 6332, namely guide post on second stage clip upper connecting base 6331 and the second stage clip lower connecting base 6333 moves towards direction away from one another away from direction mutually, simultaneously the second stage clip upper connecting base 6331 and the second stage clip lower connecting base 6333 are by along respective axis rotation, in whole process, the second stage clip 6332 can not bend all the time, and the direction always along center line N is extended.Prepped side is similar to the conversion of conventional side, thus repeats no more.
As can be seen from above-mentioned motion process, first, second stage clip 6322,6332 can not bend all the time in whole motion process, and after first, second stage clip 6322,6332 is placed on the both sides corresponding to the moving contact supporting mass of moving contact 62, the stroke of touch spring obviously increases, and the contact pressure precision provided for touch spring improves greatly.Simultaneously, first stage clip 6322 is in the process of compression, second stage clip 6332 is in release, and because two stage clips are symmetrical placements, the decrement of the first stage clip 6322 is the same with the burst size of the second stage clip 6332, and consider from the angle of energy, the driving-energy required for contact system will reduce, namely reduce the requirement to the actuating force that transmission mechanism will provide, but prior art do not have this technique effect.
Embodiment 2:
Refer to Fig. 6, the another kind of execution mode of the moving contact force-increasing mechanism 63 that Fig. 6 provides as the utility model, concrete: the first spring assembly 632 comprises the first extension spring 6324 and the 3rd extension spring 6325, the upper end of this first extension spring 6324 is hung on described first moving contact limb 621 back to the side of described second moving contact limb 622 and corresponds to the side of described moving contact central shaft 623, and lower end is hung in described rotating shaft 61, 3rd extension spring 6325 is corresponding with the first described extension spring 6324, and the upper end of the 3rd extension spring 6325 is hung on the side of the second moving contact limb 622 back to the first moving contact limb 621, and lower end is hung in rotating shaft 61, the second described spring assembly 633 comprises the second extension spring 6334 and the 4th extension spring 6335, the upper end of this second extension spring 6334 is hung on described first moving contact limb 621 back to the side of described second moving contact limb 622 and corresponds to the opposite side of described moving contact central shaft 623, and lower end is hung in described rotating shaft 61,4th extension spring 6335 is corresponding with the second described extension spring 6334, and the upper end of the 4th extension spring 6335 is hung on the side of the second moving contact limb 622 back to the first moving contact limb 621, and lower end is hung in rotating shaft 61.
In the present embodiment 2, be configured with diameter at the length direction of aforementioned rotation axis 61 with space state and be greater than the diameter of rotating shaft 61 and the separator disc 614 in disc shape, the first extension spring steady pin 6141 and the second extension spring steady pin 6142 is provided with between two adjacent separator discs 614, described first extension spring steady pin 6141 and the second extension spring steady pin 6142 correspondence point are located at the both sides of moving contact central shaft 623, the lower end of described first extension spring 6324 and the 3rd extension spring 6325 is hung on the first extension spring steady pin 6141, the lower end of described second extension spring 6334 and the 4th extension spring 6335 is hung on the second extension spring steady pin 6142.
In the present embodiment 2, it is U-shaped that the pressing plate 631 of the structural system of moving contact force-increasing mechanism 63 is designed to shape of cross section, and be extended with fixed teeth 6311 in the bottom of pressing plate 631, moving contact 62 is withstood in the effect of fixed teeth 6311, prevents moving contact 62 from upwarping relative to rotating shaft 61 when closing a floodgate.All the other are with the description to embodiment 1.
Refer to Fig. 7, transmission mechanism 2 drives idle pulley 613 to rotate, idle pulley 613 drives rotating shaft 61 to rotate, Fig. 7 illustrates the situation that moving contact 62 has just encountered the second fixed contact 52, now, first extension spring 6324 is the same with the active length of the second extension spring 6334, and when rotating shaft 61 is rotated further, moving contact 62 is that the center of circle 62 is rotated around the shaft with moving contact central shaft 623.
Refer to Fig. 8, under the aforementioned state to Fig. 7 description, the length of the first extension spring 6324, and the length of the second extension spring 6334 shortens, and provides contact pressure by the first extension spring 6324.Because prepped side is similar to the conversion of conventional side, thus repeat no more.
Can find out, hang structure due to extension spring, two extension springs can not bend in whole motion, so the contact pressure that extension spring provides also is stable.This extension spring scheme also can solve the defect in background technology.
In above-mentioned two embodiments of the present utility model, automatic change-over is four-pole switch electrical equipment, first fixed contact 51 and the second fixed contact 52 are respectively four, and the first fixed contact 51 is fixed with the first fixed contact 511, second fixed contact 52 is fixed with the second fixed contact 521, accordingly, moving contact 62 is four poles, touch spring assembly that is first, second spring assembly 632, 633 are respectively four groups, support slot 611 is four, radial direction through hole 6111 is four, separator disc 614 is five, axially spaced-apart arrangement in rotating shaft 62, for separating moving contact 62, namely play separately from effect.
The moving contact limb overlap that the moving contact 62 of every pole is set to two panels identical by above-mentioned two embodiments of the present utility model is fixing, the movable contact spring quantity of the moving contact 62 of every pole does not limit, can increase according to the increase of load current, the movable contact spring quantity of general every pole moving contact is no more than 10.
In sum, the contact system of the automatic change-over that the utility model provides, owing to touch spring symmetry point to be located at the both sides of the center of rotation of moving contact, and phase countershaft 61 can be distinguished in touch spring two ends or moving contact 62 rotates, touch spring stroke is large, and spring can not bend at the volley, ensure that and the correctness that contact pressure between closed side dynamic/static contact and contact pressure apply improve the reliability of automatic change-over, in addition, because touch spring symmetry is divided the both sides being located at the center of rotation of moving contact 62 by the utility model, when automatic change-over closed side spring compresses further, apply contact pressure, simultaneously, the touch spring release of opening side, reduce decrement, the amount of spring compression of side is identical with the spring burst size of opposite side, namely the energy of side spring increase is equal with the energy that opposite side spring discharges, what make the driving-energy needed for whole contact system has arrived balance, the driving-energy of comparing needed for traditional automatic change-over contact system, the utility model reduces requirement transmission mechanism being exported to driving-energy.
Claims (9)
1.
a kind of contact system of automatic change-over, described automatic change-over comprises a pedestal (1), one is arranged on pedestal (1) and is positioned at the transmission mechanism (2) of the side of the length direction of pedestal (1), be arranged on equally quantity on pedestal (1) equal with the quantity of the number of poles of automatic change-over and the arc-extinguishing mechanism (3) be respectively made up of the first arc control device (31) and the second arc control device (32) and be fixed on pedestal (1) back and the face terminals (4) that quantity is equal with the quantity of the number of poles of automatic change-over, wherein: the first arc control device (31) are positioned at one end of pedestal (1), second arc control device (32) are positioned at the other end of pedestal (1), and first, second arc control device (31, 32) position corresponds to each other, described contact system comprises and is arranged on described pedestal (1) and the static contact component (5) that quantity is equal with the quantity of the number of poles of described automatic change-over and moving contact component (6), that static contact component (5) comprises the first fixed contact (51) of being fixed on pedestal (1) one end and is fixed on pedestal (1) other end and the second fixed contact (52) that position is corresponding with the first fixed contact (51), moving contact component (6) comprises a rotating shaft (61), be arranged on quantity in rotating shaft (61) moving contact (62) equal with the quantity of the number of poles of automatic change-over equal with the quantity of moving contact (62) with quantity for applying towards the moving contact force-increasing mechanism (63) of the active force in the direction of described static contact component (5) to moving contact (62), rotating shaft (61) is corresponding to described first, second arc control device (31, 32) position between is bearing on described pedestal (1) rotationally, and be connected with described transmission mechanism (2), moving contact (62) is arranged in rotating shaft (61), make moving contact (62) described first by transmission mechanism (2) drives rotating shaft (61), second fixed contact (51, 52) change between, it is characterized in that: the shape of described moving contact (62) is in T shape, moving contact supporting mass is configured to by this T-shaped vertical portion, this moving contact supporting mass is bearing in described rotating shaft (61), described moving contact force-increasing mechanism (63) comprises pressing plate (631), first spring assembly (632) and the second spring assembly (633), pressing plate (631) is connected with described rotating shaft (61) in the position of the top corresponding to described moving contact (62), and correspond to first, second spring assembly (632, 633) between, and first, second spring assembly (632, 633) be arranged between pressing plate (631) and moving contact (62) with the state faced each other or be arranged between rotating shaft (61) and moving contact (62), wherein: described pressing plate (631) is also corresponding with described moving contact supporting mass, and described first, second spring assembly (632, 633) both sides of moving contact supporting mass are corresponded respectively to.
2.
the contact system of automatic change-over according to claim 1, it is characterized in that described moving contact (62) comprises the first moving contact limb (621) and the second moving contact limb (622), first, second moving contact limb (621, 622) be merged with aspectant state each other and link together, go up at the first moving contact limb (621) and be extended with one first moving contact limb support lug (6211) in the position corresponding to described rotating shaft (61), and go up at the second moving contact limb (622) and be extended with one second moving contact limb support lug (6221) in the position corresponding to rotating shaft (61) equally, first, second moving contact limb support lug (6211, 6221) correspond to each other, and by first, second moving contact limb support lug (6211, 6221) mutual merging and be configured to described moving contact supporting mass, the first moving contact (6212) is provided with in one end corresponding to described first fixed contact (51) of the first moving contact limb (621), the second moving contact (6213) is provided with in one end corresponding to described second fixed contact (52) of the first moving contact limb (621), and be provided with the 3rd moving contact (6222) in one end corresponding to the first fixed contact (51) of the second moving contact limb (622), the 4th moving contact (6223) is provided with in one end corresponding to the second fixed contact (52) of the second moving contact limb (622), first, 3rd moving contact (6212, 6222) mutually stick together, second, 4th moving contact (6213, 6223) mutually stick together, go up in described rotating shaft (61) and offer support slot (611) in the position corresponding to described moving contact supporting mass, in the middle position of this support slot (611) and be positioned at bottom offer one with the extraneous radial direction through hole (6111) communicated, described moving contact (62) matches with described support slot (611), and by described first, second moving contact limb support lug (6211, 6221) merge and the described moving contact supporting mass that jointly forms inserts described radial direction through hole (6111) and is electrically connected with described face terminals (4).
3.
the contact system of automatic change-over according to claim 2, it is characterized in that described first, second moving contact limb (621,622) is gone up and is fixed with a moving contact central shaft (623) in the position corresponding to described support slot (611), the two ends of this moving contact central shaft (623) are bearing on the corresponding cell wall of support slot (611) respectively.
4.
the contact system of automatic change-over according to claim 1, it is characterized in that described the first spring assembly (632) comprises the first stage clip upper connecting base (6321), first stage clip (6322) and the first stage clip lower connecting base (6323), first stage clip upper connecting base (6321) pivot is arranged on described pressing plate (631), the upper end of the first stage clip (6322) is fixed on the first stage clip upper connecting base (6321), the lower end of the first stage clip (6322) is fixed on the first stage clip lower connecting base (6323), and the first stage clip lower connecting base (6323) is hinged on described moving contact (62) in the position of the side corresponding to described moving contact central shaft (623), described the second spring assembly (633) comprises the second stage clip upper connecting base (6331), second stage clip (6332) and the second stage clip lower connecting base (6333), second stage clip upper connecting base (6331) pivot under the state corresponding with described first stage clip upper connecting base (6321) is arranged on pressing plate (631), the upper end of the second stage clip (6332) is fixed on the second stage clip upper connecting base (6331), the lower end of the second stage clip (6332) is fixed on the second stage clip lower connecting base (6333), and the second stage clip lower connecting base (6323) is hinged on moving contact (62) in the position of the opposite side corresponding to described moving contact central shaft (623).
5.
the contact system of automatic change-over according to claim 2, it is characterized in that described the first spring assembly (632) comprises the first extension spring (6324) and the 3rd extension spring (6325), the upper end of this first extension spring (6324) is hung on described first moving contact limb (621) back to the side of described second moving contact limb (622) and corresponds to the side of described moving contact central shaft (623), and lower end is hung in described rotating shaft (61), 3rd extension spring (6325) is corresponding with described the first extension spring (6324), and the upper end of the 3rd extension spring (6325) is hung on the side of the second moving contact limb (622) back to the first moving contact limb (621), and lower end is hung in rotating shaft (61), described the second spring assembly (633) comprises the second extension spring (6334) and the 4th extension spring (6335), the upper end of this second extension spring (6334) is hung on described first moving contact limb (621) back to the side of described second moving contact limb (622) and corresponds to the opposite side of described moving contact central shaft (623), and lower end is hung in described rotating shaft (61), 4th extension spring (6335) is corresponding with described the second extension spring (6334), and the upper end of the 4th extension spring (6335) is hung on the side of the second moving contact limb (622) back to the first moving contact limb (621), and lower end is hung in rotating shaft (61).
6.
the contact system of automatic change-over according to claim 1, it is characterized in that respectively being configured with a shaft support spindle nose (612) at the two ends of rotating shaft (61), rotating shaft (61) installs in the axle sleeve (22) of transmission mechanism (2) towards shaft support spindle nose (612) pivot of one end of described transmission mechanism (2), go up at described pedestal (1) and the position of the other end corresponding to described rotating shaft (61) is provided with a bearing pedestal (11), this bearing pedestal (11) is furnished with a pedestal cap (111), the supporting spindle nose (612) of the other end of rotating shaft (61) is bearing on bearing pedestal (11) by rolling bearing (6121) rotationally, and limited by described pedestal cap (111).
7.
the contact system of the automatic change-over according to claim 1 or 6, it is characterized in that being fixed with an idle pulley (613) in described rotating shaft (61) towards one end of described transmission mechanism (2), this idle pulley (613) is in transmission connection with eccentric state and transmission mechanism (2).
8.
the contact system of automatic change-over according to claim 4, is characterized in that described first, second stage clip (6322,6332) forms splayed relation each other.
9.
the contact system of automatic change-over according to claim 5, it is characterized in that being configured with diameter at the length direction of described rotating shaft (61) with space state is greater than the diameter of rotating shaft (61) and the separator disc (614) in disc shape, the first extension spring steady pin (6141) and the second extension spring steady pin (6142) is provided with between two adjacent separator discs (614), described first extension spring steady pin (6141) and the second extension spring steady pin (6142) correspondence point are located at the both sides of described moving contact central shaft (623), the lower end of described first extension spring (6324) and the 3rd extension spring (6325) is hung on the first extension spring steady pin (6141), the lower end of described second extension spring (6334) and the 4th extension spring (6335) is hung on the second extension spring steady pin (6142).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420811581.2U CN204270905U (en) | 2014-12-18 | 2014-12-18 | The contact system of automatic change-over |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420811581.2U CN204270905U (en) | 2014-12-18 | 2014-12-18 | The contact system of automatic change-over |
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| Publication Number | Publication Date |
|---|---|
| CN204270905U true CN204270905U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420811581.2U Active CN204270905U (en) | 2014-12-18 | 2014-12-18 | The contact system of automatic change-over |
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| CN (1) | CN204270905U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766805A (en) * | 2018-05-31 | 2018-11-06 | 深圳市泰永电气科技有限公司 | The double breaking points moving contact component and contact apparatus of automatic transfer switching electric appliance |
| CN108922803A (en) * | 2018-09-06 | 2018-11-30 | 厦门尤伯电气有限公司 | A kind of phase-change switch structure |
| CN109119259A (en) * | 2018-09-13 | 2019-01-01 | 浙江正泰电器股份有限公司 | Split pole type double power supply automatic transfer switch |
| CN109961970A (en) * | 2017-12-26 | 2019-07-02 | Abb瑞士股份有限公司 | Change-over switch and its manufacturing method |
| CN111354585A (en) * | 2020-05-14 | 2020-06-30 | 广东电网有限责任公司东莞供电局 | Dual-power switching device |
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2014
- 2014-12-18 CN CN201420811581.2U patent/CN204270905U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961970A (en) * | 2017-12-26 | 2019-07-02 | Abb瑞士股份有限公司 | Change-over switch and its manufacturing method |
| CN109961970B (en) * | 2017-12-26 | 2022-07-05 | Abb瑞士股份有限公司 | Transfer switch and method of manufacturing the same |
| CN108766805A (en) * | 2018-05-31 | 2018-11-06 | 深圳市泰永电气科技有限公司 | The double breaking points moving contact component and contact apparatus of automatic transfer switching electric appliance |
| CN108766805B (en) * | 2018-05-31 | 2020-04-28 | 深圳市泰永电气科技有限公司 | Double-breakpoint movable contact assembly and contact device of automatic transfer switching device |
| CN108922803A (en) * | 2018-09-06 | 2018-11-30 | 厦门尤伯电气有限公司 | A kind of phase-change switch structure |
| CN108922803B (en) * | 2018-09-06 | 2023-12-08 | 福建尤伯科技有限公司 | Phase change switch structure |
| CN109119259A (en) * | 2018-09-13 | 2019-01-01 | 浙江正泰电器股份有限公司 | Split pole type double power supply automatic transfer switch |
| CN109119259B (en) * | 2018-09-13 | 2024-05-14 | 浙江正泰电器股份有限公司 | Automatic change-over switch for split-pole double power supply |
| CN111354585A (en) * | 2020-05-14 | 2020-06-30 | 广东电网有限责任公司东莞供电局 | Dual-power switching device |
| CN111354585B (en) * | 2020-05-14 | 2020-08-21 | 广东电网有限责任公司东莞供电局 | Dual-power switching device |
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