CN214956484U

CN214956484U - Three-section type double-power-supply change-over switch

Info

Publication number: CN214956484U
Application number: CN202120892864.4U
Authority: CN
Inventors: 王重胜; 黄磐; 林一河; 南志超
Original assignee: Zhejiang Wansong Electric Co ltd
Current assignee: Zhejiang Wansong Electric Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-30
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a three-section dual-power transfer switch, which comprises a drive plate, a first drive plate and a second drive plate, wherein a first excitation switch pushes the drive plate to rotate in the forward direction through the first drive plate, and a second excitation switch pushes the drive plate to rotate in the reverse direction through the second drive plate; the drive plate is fixedly connected with the intermediate gear, the two sides of the intermediate gear are in transmission engagement with the first gear and the second gear, the first gear is fixedly connected with the first rotary plate, the first rotary plate is provided with a third arc-shaped groove, the first drive plate is provided with a fourth arc-shaped groove, a first swing arm connected with the first energy storage spring is provided with a first drive pin at the swinging end, the first drive plate is connected with a first rotary shaft, the second gear is fixedly connected with a second rotary plate, the second rotary plate is provided with a fifth arc-shaped groove, the second drive plate is provided with a sixth arc-shaped groove, a second swing arm connected with the second energy storage spring is provided with a second drive pin at the swinging end, and the second drive plate is connected with a second rotary shaft. The utility model discloses simple structure is compact, easily realizes the switch miniaturization.

Description

Three-section type double-power-supply change-over switch

Technical Field

The utility model relates to an electrical switch product, concretely relates to syllogic dual power change over switch.

Background

Three-section dual power transfer switch has the three operating condition of combined floodgate, reserve combined floodgate and two switchings commonly used, will realize dual power transfer switch's three-section function at present, needs three excitation coil to promote switching mechanism and moves, and the overall structure of switch is complicated, need occupy great space, consequently is difficult to realize the switch miniaturization, and the switch cost also can improve, and the possibility of breaking down also can increase.

Disclosure of Invention

In order to solve the above problem, an object of the present invention is to provide a three-stage dual power transfer switch with simple and compact structure and easy miniaturization of the switch.

In order to achieve the above purpose, the utility model provides a following technical scheme: a three-section dual-power-supply change-over switch comprises a shell, wherein a first fixed contact communicated with a main power supply, a second fixed contact communicated with a standby power supply and a power supply change-over mechanism are arranged in the shell, a first moving contact is arranged on a first rotating shaft to control the opening and closing of the first fixed contact, a second moving contact is arranged on a second rotating shaft to control the opening and closing of the second fixed contact, the power supply change-over mechanism comprises an excitation switch, an intermediate gear, a first gear, a second gear, a first driving disc and a second driving disc, the forward and reverse rotation of the intermediate gear is driven by the excitation switch, the first gear is fixedly connected with the first rotating disc, the first rotating disc is provided with a third arc-shaped groove, the first driving disc is provided with a fourth arc-shaped groove, a first swing arm connected with a first energy storage spring is provided with a first poking pin at a swing end, two ends of the first poking pin are movably arranged in the third and fourth arc-shaped grooves, and the first driving disc is connected with a first rotating shaft, the second gear is fixedly connected with the second rotary table, the second rotary table is provided with a fifth arc-shaped groove, the second driving disc is provided with a sixth arc-shaped groove, a second swing arm connected with the second energy storage spring is provided with a second shifting pin at the swinging end, two ends of the second shifting pin are movably arranged in the fifth arc-shaped groove and the sixth arc-shaped groove, and the second driving disc is connected with the second rotating shaft.

The number of the excitation switches is two, namely a first excitation switch and a second excitation switch, the first excitation switch pushes the driving plate to rotate in the forward direction through the first driving lever, the second excitation switch pushes the driving plate to rotate in the reverse direction through the second driving lever, and the driving plate is fixedly connected with the intermediate gear.

The first driving lever is movably arranged in a first arc-shaped groove of the dial, the second driving lever is movably arranged in a second arc-shaped groove of the dial, the return of the dial after forward rotation is completed by the second excitation switch through pushing the third driving lever, the return of the dial after reverse rotation is completed by the first excitation switch through pushing the fourth driving lever, and the third and fourth driving levers are fixedly connected with the dial.

The first moving contact and the second moving contact respectively comprise two parallel opposite contact strips, slots are formed at intervals between the end parts of the contact strips, inserting slots which are in one-to-one correspondence with the contact strips are respectively arranged on the first rotating shaft and the second rotating shaft, a compression spring is arranged between the inner wall of each inserting slot and the corresponding contact strip, the first static contact and the second static contact are the inserting strips, the first rotating shaft can drive the slots to rotate, and the inserting strips are arranged on the rotating tracks of the slots

One end of the first rotating shaft and one end of the second rotating shaft are provided with non-circular transmission grooves, and the other end of the first rotating shaft is provided with a transmission matching block matched with the transmission grooves.

The power switching mechanism further comprises a rotatable manual gear piece, wherein teeth on the manual gear piece are in meshing transmission with the first gear or the second gear, and a handle is further arranged on the manual gear piece.

The detachable connection of handle is on manual tooth piece be equipped with the operation groove on the casing, be equipped with the storage tank that supplies the handle to place on the tank bottom in operation groove, the handle is placed in this storage tank the upper end of handle is equipped with the locking piece the operation inslot be equipped with it assorted apron, apron slidable sets up at the operation inslot, the apron lateral wall be equipped with locking piece assorted groove of stepping down is equipped with and locks piece complex spring bolt in this groove of stepping down the bottom in operation groove be equipped with the corresponding fluting of manual tooth piece be equipped with on the apron with fluting assorted logical groove, spring bolt and the locking piece on the apron break away from to lead to the groove and remove to expose manual tooth piece on the fluting, can take out the handle simultaneously and install on manual tooth piece.

The utility model discloses a this kind of structure, the driving of intermediate gear through excitation switch realizes just reversing the rotation to control the power break-make between first, the second static contact respectively, thereby make and to form the user state of combined floodgate commonly used, reserve combined floodgate and two switchings between main power supply and the stand-by power supply, such simple structure is compact, and is small, easily realizes the switch miniaturization.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of a partial explosion according to an embodiment of the present invention;

FIG. 3 is a perspective view of the internal structure of an embodiment of the present invention;

FIG. 4 is a perspective view of an internal partial structure of an embodiment of the present invention

FIG. 5 is an exploded perspective view of the internal structure of an embodiment of the present invention;

FIG. 6 is a view showing a structure of a transmission structure of a driving plate according to an embodiment of the present invention;

fig. 7 is a perspective view of a fixed contact and a movable contact in the embodiment of the present invention;

fig. 8 is a perspective view of the first rotating shaft or the second rotating shaft according to the embodiment of the present invention.

Detailed Description

The present invention will be specifically described below by way of examples.

As shown in fig. 1 to 5, the three-stage dual power supply changeover switch includes a housing 1, a first fixed contact 2 connected to a main power supply, a second fixed contact 3 connected to a standby power supply, and a power supply changeover mechanism 4 are disposed in the housing 1, a first movable contact 20 is mounted on a first rotating shaft 21 to control opening and closing of the first fixed contact 2, a second movable contact 30 is mounted on a second rotating shaft 31 to control opening and closing of the second fixed contact 3, the power supply changeover mechanism 4 includes an excitation switch, a dial plate 40, a first driving plate 41 and a second driving plate 42, the number of the excitation switches is two, the two excitation switches are respectively a first excitation switch 431 and a second excitation switch 432, the first excitation switch 431 pushes the dial plate 40 to rotate forward through a first shift lever 441, the first shift lever 441 is movably disposed in a first arc-shaped groove 61 of the dial plate 40, the second excitation switch 432 pushes the dial plate 40 to rotate backward through a second shift lever 442, the second shift lever 442 is movably arranged in the second arc-shaped groove 62 of the dial plate 40; the driving plate 40 is two, the first arc-shaped groove and the second arc-shaped groove are respectively arranged on the driving plate 40 which is in one-to-one correspondence, the driving plate 40 is fixedly connected with the intermediate gear 45, the two sides of the intermediate gear 45 are in transmission engagement with the first gear 461 and the second gear 462, the first gear 461 is fixedly connected with the first rotating disc 471, the first rotating disc 471 is provided with a third arc-shaped groove 63, the first driving disc 41 is provided with a fourth arc-shaped groove 64, the first swinging arm 491 connected with the first energy storage spring 481 is provided with a first pulling pin 4911 at the swinging end, the two ends of the first pulling pin 4911 are movably arranged in the third (63) and the fourth arc-shaped groove 64, the first driving disc 41 is connected with the first rotating shaft 21, the second gear 462 is fixedly connected with the second rotating disc 472, the second rotating disc 472 is provided with a fifth arc-shaped groove 65, the second driving disc 42 is provided with a sixth arc-shaped groove 66, the second swinging arm 492 connected with the second energy storage spring 482 is provided with a second pulling pin 4922 at the swinging end, the second driving plate 42 is connected to the second rotating shaft 31, and both ends of the second pulling pin 4922 are movably disposed in the fifth (65) and sixth arc-shaped slots 66.

The return after the forward rotation of the dial 40 is completed by the second excitation switch 432 by pushing the third lever 50, the return after the reverse rotation of the dial 40 is completed by the first excitation switch 431 by pushing the fourth lever 60, and the third and fourth levers 60 are fixedly connected with the dial 40.

The three-section type double-power-supply change-over switch works as follows: in a double-brake state, when the first excitation switch 431 acts, the first driving lever 441 pushes the driving plate 40 to rotate forward at the first time, the first gear 461 and the second gear 462 rotate along with the first gear 461, and at the initial stage of rotation of the first gear 461, the first rotating disc 471 rotates reversely only through the third arc-shaped groove 63 to drive the first driving pin 4911 to act, so that the first swing arm 491 swings reversely, the first energy storage spring 481 performs the energy storage action, at this time, due to the existence of the fourth arc-shaped groove 64, the first driving disc 41 does not act, when the first swing arm 491 passes through the inflection point of the first energy storage spring 481, the first energy storage spring 481 releases energy rapidly, the first swing arm 491 swings forward rapidly to drive the first driving disc 41 and the first rotating shaft 21 to rotate reversely, so that the first movable contact 20 and the first fixed contact 2 are closed to realize the common electric switch-on, and when the first swing arm swings forward rapidly, due to the existence of the third arc-shaped groove 63, therefore, the first rotating disc 471 does not rotate reversely any more, and the intermediate gear 45 and the dial 40 stay in place; in addition, in the process of the above-mentioned common electrical closing action, although the second gear 462 drives the second rotary table 472 to rotate reversely, since the fifth arc-shaped groove 65 of the second rotary table 472 makes a yielding action, the second swing arm 492 is not caused to swing by the reverse rotation of the second rotary table 472, the second energy storage spring 482 does not perform an energy storage action, the second driving disc 42 and the second rotating shaft 31 do not generate an action, and the corresponding second movable contact 30 does not generate an action; when the normal electrical switching-off is required, the second excitation switch 432 is actuated to push the third shift lever 50 to rotate the dial 40 reversely to return to the original position, and the switch returns to the double-switching-off state again. At this time, if the standby power switching-on is required, the second excitation switch 432 firstly operates, the dial 40 is pushed to rotate reversely through the second shift lever 442 for the first time, the first gear 461 and the second gear 462 rotate accordingly, the second gear 462 rotates in the initial stage, the reverse rotation of the second rotary table 472 drives the second shift pin 4922 to operate only through the fifth arc-shaped groove 65, so that the second swing arm 492 swings in the forward direction, the second energy storage spring 482 performs the energy storage operation, at this time, due to the existence of the sixth arc-shaped groove 66, the second drive disk 42 does not operate, when the second swing arm 492 passes through the inflection point of the second energy storage spring 482, the second energy storage spring 482 rapidly releases energy, the second swing arm 492 swings forward rapidly, the second drive disk 42 and the second drive shaft are driven to rotate in the forward direction, the second fixed contact 30 and the second fixed contact 3 are closed, the standby power switching-on is realized, when the movable contact of the second swing arm 492 swings forward rapidly, due to the fifth arc-shaped slot 65, the second rotating disc 472 does not rotate in the forward direction any more, and the intermediate gear 45 and the dial plate 40 stay in the original positions; in addition, in the process of the standby power closing action, although the first gear 461 drives the first rotating disc 471 to rotate reversely, since the third arc-shaped groove 63 of the first rotating disc 471 makes a yielding action, the first swinging arm 491 is not caused by the reverse rotation of the first rotating disc 471, the first energy storage spring 481 does not perform an energy storage action, the first driving disc 41 and the first rotating shaft 21 do not generate an action, and the corresponding first moving contact 20 does not generate an action; when the standby power is needed to be switched off, the first excitation switch 431 is actuated to push the fourth shift lever 60 to rotate the dial 40 forward and return to the original position, and the switch returns to the double-brake state again.

The excitation switch comprises an excitation coil (not shown in the figure) and a movable iron core 5, the excitation coil is wound on a coil framework 6, the movable iron core 5 moves along the hollow of the coil framework 6, the two movable iron cores 5 are connected with shifting pieces 7, the movement of the shifting pieces 7 drives the first shifting rod 441 or the second shifting rod 442 to move, and two return springs 8 are further arranged at the tail end of the movable iron core 5 for returning. The structure can enable the excitation coil to generate a magnetic field after being electrified, so that the magnetic field is used for adsorbing the movable iron core 5 to move linearly along the hollow of the framework, and further the first driving lever 441 or the second driving lever 442 is driven to move.

As shown in fig. 6 and 7, the first movable contact 20 and the second movable contact 30 respectively include two parallel opposite contact bars 311, slots 32 are formed at intervals between end portions of the contact bars 311, insertion grooves 32 corresponding to the contact bars 311 one to one are respectively disposed on the first rotating shaft 21 and the second rotating shaft 31, a compression spring is disposed between inner walls of the insertion grooves 32 and the contact bars 311, the first and second fixed contacts are insertion bars, the first rotating shaft 21 can drive the insertion grooves 32 to rotate, and the insertion bars are disposed on a rotation track of the insertion grooves 32

As shown in fig. 7, one end of the first rotating shaft (21) and one end of the second rotating shaft (31) are provided with a non-circular transmission groove (211), the other end of the first rotating shaft (21) is provided with a transmission matching block (212) matching with the transmission groove (211), the transmission groove (211) is a flower-shaped groove, and the transmission grooves (211) with the same shape are also configured on the first driving disk (41) and the second driving disk (42) for transmission with the first rotating shaft (31) or the second rotating shaft (31), so that the corresponding number of the first rotating shaft (21) and the second rotating shaft (31) can be configured according to the number of poles, and the assembly is more convenient.

As shown in fig. 1 and 2, the power switching mechanism 4 further includes a rotatable manual blade 9, teeth on the manual blade 9 are in meshing transmission with the first gear 461 or the second gear 462, a handle 90 is further disposed on the manual blade 9, the handle 90 is detachably connected to the manual blade 9, an operation slot 10 is disposed on the housing 1, an accommodation slot 133 for accommodating the handle 90 is disposed on a bottom of the operation slot 10, the handle 90 is disposed in the accommodation slot 133, a locking block 901 is disposed at an upper end of the handle 90, a cover plate 11 matched with the operation slot 10 is disposed in the operation slot 10, the cover plate 11 is slidably disposed in the operation slot 10, a yielding slot 110 matched with the locking block 901 is disposed on a side wall of the cover plate 11, a locking tongue matched with the locking block 901 is disposed in the yielding slot 110, a slot 101 corresponding to the manual blade 9 is disposed at a bottom of the operation slot 10, a through slot 112 matched with the opening 101 is disposed on the cover plate 11, the lock tongue on the cover plate 11 is separated from the lock block 901, the through groove 112 is moved to the open groove 101 to expose the manual tooth piece 9, and the removable handle 90 is installed on the manual tooth piece 9. Through the structure, the states of common closing, standby closing and double-switch switching can be realized in a manual mode when the excitation switch fails, and the operation is convenient.

Claims

1. Three-section dual supply change over switch, including the casing, be provided with the first static contact of intercommunication main power supply, the second static contact and the power switching mechanism of intercommunication stand-by power supply in the casing, first moving contact is installed and is come the control and open and shut with first static contact in first pivot, and the second moving contact is installed and is come the control and open and shut its characterized in that with the second static contact in the second pivot: the power supply switching mechanism comprises an excitation switch, an intermediate gear, a first gear, a second gear, a first driving disk and a second driving disk, wherein the positive and negative rotation of the intermediate gear is driven by the excitation switch, the first gear is fixedly connected with the first rotating disk, the first rotating disk is provided with a third arc-shaped groove, the first driving disk is provided with a fourth arc-shaped groove, a first stirring pin is arranged at the swinging end of a first swing arm connected with a first energy storage spring, the two ends of the first stirring pin are movably arranged in the third arc-shaped groove and the fourth arc-shaped groove, the first driving disk is connected with a first rotating shaft, the second gear is fixedly connected with the second rotating disk, the second rotating disk is provided with a fifth arc-shaped groove, the second driving disk is provided with a sixth arc-shaped groove, a second stirring pin is arranged at the swinging end of a second swing arm connected with a second energy storage spring, the two ends of the second stirring pin are movably arranged in the fifth arc-shaped groove and the sixth arc-shaped groove, and the second driving disk is connected with a second rotating shaft.

2. The three-stage dual-power transfer switch of claim 1, wherein: the number of the excitation switches is two, namely a first excitation switch and a second excitation switch, the first excitation switch pushes the driving plate to rotate in the forward direction through the first driving lever, the second excitation switch pushes the driving plate to rotate in the reverse direction through the second driving lever, and the driving plate is fixedly connected with the intermediate gear.

3. The three-stage dual-power transfer switch of claim 2, wherein: the first driving lever is movably arranged in a first arc-shaped groove of the dial, the second driving lever is movably arranged in a second arc-shaped groove of the dial, the return of the dial after forward rotation is completed by the second excitation switch through pushing the third driving lever, the return of the dial after reverse rotation is completed by the first excitation switch through pushing the fourth driving lever, and the third and fourth driving levers are fixedly connected with the dial.

4. The three-stage dual-power transfer switch of claim 1, wherein: the first moving contact and the second moving contact respectively comprise two parallel opposite contact strips, slots are formed at intervals between the end parts of the contact strips, the first rotating shaft and the second rotating shaft are respectively provided with inserting slots which correspond to the contact strips one by one, a pressing spring is arranged between the inner wall of each inserting slot and the corresponding contact strip, the first static contact and the second static contact are the inserting strips, the first rotating shaft can drive the slots to rotate, and the inserting strips are arranged on the rotating tracks of the slots.

5. The three-stage dual-power transfer switch of claim 1, wherein: one end of the first rotating shaft and one end of the second rotating shaft are provided with non-circular transmission grooves, and the other end of the first rotating shaft is provided with a transmission matching block matched with the transmission grooves.

6. The three-stage dual-power transfer switch of claim 1, wherein: the power switching mechanism further comprises a rotatable manual gear piece, wherein teeth on the manual gear piece are in meshing transmission with the first gear or the second gear, and a handle is further arranged on the manual gear piece.

7. The three-stage dual-power transfer switch of claim 6, wherein: the detachable connection of handle is on manual tooth piece be equipped with the operation groove on the casing, be equipped with the storage tank that supplies the handle to place on the tank bottom in operation groove, the handle is placed in this storage tank the upper end of handle is equipped with the locking piece the operation inslot be equipped with it assorted apron, apron slidable sets up at the operation inslot, the apron lateral wall be equipped with locking piece assorted groove of stepping down is equipped with and locks piece complex spring bolt in this groove of stepping down the bottom in operation groove be equipped with the corresponding fluting of manual tooth piece be equipped with on the apron with fluting assorted logical groove, spring bolt and the locking piece on the apron break away from to lead to the groove and remove to expose manual tooth piece on the fluting, can take out the handle simultaneously and install on manual tooth piece.