CN109216084A - A kind of zero excessive phase-change switch - Google Patents
A kind of zero excessive phase-change switch Download PDFInfo
- Publication number
- CN109216084A CN109216084A CN201811089668.2A CN201811089668A CN109216084A CN 109216084 A CN109216084 A CN 109216084A CN 201811089668 A CN201811089668 A CN 201811089668A CN 109216084 A CN109216084 A CN 109216084A
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- Prior art keywords
- gear
- switch
- circuit
- conductive sheet
- confinement block
- Prior art date
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000004020 conductor Substances 0.000 claims description 5
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 235000013290 Sagittaria latifolia Nutrition 0.000 claims 1
- 235000015246 common arrowhead Nutrition 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
- H01H19/14—Operating parts, e.g. turn knob
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/08—Bases; Stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/36—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having only two operative positions, e.g. relatively displaced by 180 degrees
- H01H19/42—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having only two operative positions, e.g. relatively displaced by 180 degrees providing more than two electrically different conditions, e.g. for closing either or both of two circuits
Landscapes
- Structure Of Telephone Exchanges (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a kind of zero excessive phase-change switches, including Switch main body, gearshift, circuit connection mechanism, Switch main body includes switch pedestal, contact jaw chamber and switch top cover, circuit connection mechanism includes circuit connection column and terminal, the upper surface of switch pedestal is uniformly provided with three contact jaw chambers, it is uniformly provided with three circuit connection columns in the middle part of switch pedestal outer wall, is equipped with gearshift inside switch pedestal, gearshift includes conductive column, conductive sheet and insulating trip.The present invention is equipped in a switching switch, by the position for adjusting conductive sheet, it can control the first circuit, the connection or disconnection of second circuit and bypass circuit and subscriber's line circuit, relatively Switching power circuit, relationship is set by the card between the gear slot on multiple gear confinement blocks and conductive sheet, the position for switching each switching section is defined.
Description
Technical field
The present invention relates to switching device field, specially a kind of zero excessive phase-change switch.
Background technique
Setting two-way power system is usually required, in urban electricity supply or integrated mill to prevent power supply confession all the way
When answering system jam, changeable backup power source works.
In order to make life power or manufacture it is unaffected, need in Switching power can uninterrupted power supply, usually
Switching mode be one bypass circuit of the first circuit in parallel (similar special frequency conversion equipment), by PMW export one with
The voltage that first circuit is synchronised is connected to be switched user.The firewire for disconnecting the first circuit at this time, is powered by shunting device.
After crossing N number of power frequency period (t), phase shifts, and when output voltage is consistent with second circuit voltage, frequency becomes again and power grid
It is synchronous.The Phase synchronization of output phase and second circuit is checked, single-phase user is connected to the second phase at this time.Finally disconnect bypass electricity
Road, completion do not have a power failure switchable load, to achieve the purpose that convenient for operation, but it there are still following drawbacks in actual use:
1. the switch for switching second source usually requires to be arranged multiple, and operate relatively complicated；
2. not carrying out good restriction to the gear of switching switch, maloperation is easily caused；
3. switching the connection with power circuit to be more troublesome, cannot quickly connect.
Summary of the invention
The purpose of the present invention is to provide a kind of zero excessive phase-change switches, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of zero excessive phase-change switch, including switch this
Body, gearshift, circuit connection mechanism, the Switch main body include switch pedestal, contact jaw chamber and switch top cover, circuit connection
Mechanism includes circuit connection column and terminal, and switch pedestal is cylindrical shape, and switch top cover is switch pedestal is arranged in upper
End face, the upper surface of switch pedestal are uniformly provided with three contact jaw chambers, and contact jaw chamber inner upper is equipped with the electricity of cylindrical shape
Road contact jaw, the interior bottom portion of contact jaw chamber are equipped with conducting connecting bar, electrical contact end underrun elastic electric conductor and conduction
Connecting rod connection, the switch pedestal outer wall middle part are uniformly provided with three circuit connection columns, set among the lower end surface of switch pedestal
There is a circuit connection column, three described conducting connecting bar one end are outside along the centre of three circuit connection columns in the middle part of switch pedestal
It penetrates out, is equipped with gearshift inside the switch pedestal, gearshift includes conductive column, conductive sheet and insulating trip, described to lead
Electric column is round bar shape, and the inner rotation of conductive column and switch pedestal connects, and the upper end of conductive column is equipped with conductive sheet and insulating trip,
Conductive sheet and insulating trip are fan-shaped plate body, and the side wall of conductive sheet offers gear slot, the middle upper part of conductive sheet and insulating trip
Gear being equipped with by connecting rod to dial, the upper surface of the switch pedestal is opened up along the outer wall of conductive sheet and insulating trip there are five cavity,
Gear confinement block is equipped in five cavitys, the lower end of the conductive column opens up through-hole, and through-hole inner upper is equipped with subscriber's line circuit
Contact jaw, through-hole lower inside is equipped with conductive mandril, and the lower surface of subscriber's line circuit contact jaw passes through elastic electric conductor and conduction
Mandril connects, and circuit connection column set by the lower end edge switch pedestal lower end surface of conductive mandril is pierced by, outside the circuit connection column
End is plugged together with terminal one end.
Preferably, three electrical contact ends are respectively the first electrical contact end, bypass circuit contact jaw, second circuit
Contact jaw, five gear confinement blocks are respectively the first gear confinement block, the second gear confinement block, third gear confinement block, the 4th
The outside at the first electrical contact end, five gears are arranged in gear confinement block and fifth speed position confinement block, the first gear confinement block
Confinement block is 60 ° of distributions counterclockwise along angle spacing.
Preferably, the angle of the conductive sheet sector is 120 °, and the interposition of conductive sheet outer wall cambered surface is arranged in gear slot
It sets, the angle of insulating trip sector is 240 °.
Preferably, the cavity lateral wall that the outside Yu switch pedestal upper surface of the gear confinement block are opened up passes through spring
Connection, the inside of gear confinement block are semicircle cambered surface, and gear slot is the semicircle cambered surface of indent, gear confinement block inner end and gear
Slot cooperation card is set.
Preferably, electrical contact end upper end is that semicircle is spherical, and the lower surface of conductive sheet offers annular groove, and circuit connects
The upper end of contravention is contacted with the opened up annular groove cooperation in conductive sheet lower surface.
Preferably, the circuit connection column is cylindric, and the outer end edges of circuit connection column are equipped with more connection pawls, connection
The outer end of pawl is equipped with the triangle buckle being inwardly arranged, and the outer wall that terminal and circuit connection column contact side is equipped with matches with buckle
The snap ring of conjunction.
Preferably, the gear, which is dialled, is provided with arrow instruction, and arrow instruction is consistent with the direction of gear slot, and switch dome covers
Surface sets the position indicator there are five gear confinement block.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention setting rationally, functional, have with
Lower advantage:
1. the present invention is equipped in switching switch, by the position of adjusting conductive sheet, the first circuit can control, second
The connection or disconnection of circuit and bypass circuit and subscriber's line circuit, relatively Switching power circuit；
2. the present invention sets relationship by the card between the gear slot on multiple gear confinement blocks and conductive sheet, each to switching
The position of switching section is defined；
3. the present invention is equipped with connection pawl on circuit connection column, card is carried out to the connector of connection circuit and is set, is easily installed, and
And prevent contact jaw from falling off.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is sectional front view of the present invention；
Fig. 3 is the sectional view in Fig. 2 at A-A；
Fig. 4 is the enlarged drawing in Fig. 2 at B；
Fig. 5 is the schematic diagram that the first electrical contact end contacts connection with conductive sheet in the present invention；
Bypass circuit contact jaw contacts the schematic diagram of connection with conductive sheet in the present invention of the position Fig. 6.
In figure: Switch main body 1, gearshift 2, circuit connection mechanism 3, gear confinement block 4, the first gear confinement block 41,
Second gear confinement block 42, third gear confinement block 43, fourth speed position confinement block 44, fifth speed position confinement block 45, electrical contact
Hold the 5, first electrical contact end 51, bypass circuit contact jaw 52, second circuit contact jaw 53, conducting connecting bar 6, switch pedestal 7,
Contact jaw chamber 8, switch top cover 9, conductive column 10, conductive sheet 11, insulating trip 12, gear slot 13, gear dial 14, circuit connection column 15,
Terminal 16, conductive mandril 17, subscriber's line circuit contact jaw 18, connection pawl 19.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 to 6 is please referred to, the present invention provides a kind of technical solution: a kind of zero excessive phase-change switch, including Switch main body
1, gearshift 2, circuit connection mechanism 3, Switch main body 1 include that switch pedestal 7, contact jaw chamber 8 and switch top cover 9, circuit connect
Connection mechanism 3 includes circuit connection column 15 and terminal 16, and switch pedestal 7 is cylindrical shape, and switch top cover 9 is that setting is switching
The upper surface of top cover 9, switch 9 pairs of 9 upper ends of switch top cover of top cover are sealed, and the upper surface of switch pedestal 7 is uniformly provided with three
A contact jaw chamber 8,8 inner upper of contact jaw chamber are equipped with the electrical contact end 5 of cylindrical shape, and the interior bottom portion of contact jaw chamber 8 is set
There is conducting connecting bar 6,5 underrun elastic electric conductor of electrical contact end is connect with conducting connecting bar 6, in 7 outer wall of switch pedestal
Portion is uniformly provided with three circuit connection columns 15, is equipped with a circuit connection column 15, three conductions among the lower end surface of switch pedestal 7
6 one end of connecting rod penetrates out outward along the centre of the 7 three circuit connection columns 15 in middle part of switch pedestal, is equipped with inside switch pedestal 7
Gearshift 2, gearshift 2 include conductive column 10, conductive sheet 11 and insulating trip 12, and conductive column 10 is round bar shape, and conductive column
10 connect with the inner rotation of switch pedestal 7, and the upper end of conductive column 10 is equipped with conductive sheet 11 and insulating trip 12, conductive sheet 11 and absolutely
Embolium 12 is fan-shaped plate body, and the side wall of conductive sheet 11 offers gear slot 13, the middle upper part of conductive sheet 11 and insulating trip 12
Gear is equipped with by connecting rod and dials 14, and rotation gear, which dials 14, to be defined the position of conductive sheet 11, the upper surface edge of switch pedestal 7
The outer wall of conductive sheet 11 and insulating trip 12 is opened up there are five cavity, is equipped with gear confinement block 4 in five cavitys, conductive column 10
Lower end opens up through-hole, and through-hole inner upper is equipped with subscriber's line circuit contact jaw 18, and through-hole lower inside is equipped with conductive mandril 17, and uses
The lower surface at family electrical contact end 18 is connect by elastic electric conductor with conductive mandril 17, the lower end edge switch bottom of conductive mandril 17
Circuit connection column 15 set by 7 lower end surfaces of seat is pierced by, and 15 outer end of circuit connection column is plugged together with 16 one end of terminal.
Three electrical contact ends 5 are respectively the first electrical contact end 51, bypass circuit contact jaw 52, second circuit contact jaw
53, five gear confinement blocks 4 are respectively the first gear confinement block 41, the second gear confinement block 42, third gear confinement block 43, the
The outer of the first electrical contact end 51 is arranged in four gear confinement blocks 44 and fifth speed position confinement block 45, the first gear confinement block 41
Side, five gear confinement blocks 4 are 60 ° of distributions counterclockwise along angle spacing.
The fan-shaped angle of conductive sheet 11 is 120 °, and the middle position of 11 outer wall cambered surface of conductive sheet is arranged in gear slot 13, absolutely
The fan-shaped angle of embolium 12 is 240 °, when gear slot 13 and the first gear confinement block 41 block and set, only the first electrical contact end
51 are connected to conductive sheet 11, when gear slot 13 and the second gear confinement block 42 card set when, have the first electrical contact end 51 and bypass
Electrical contact end 52 is connected to conductive sheet 11, and when gear slot 13 is set with the card of third gear confinement block 43, only bypass circuit is connect
Contravention 52 is connected to conductive sheet 11, when gear slot 13 is set with the card of fourth speed position confinement block 44, there is 52 He of bypass circuit contact jaw
Second circuit contact jaw 53 is connected to conductive sheet 11, when gear slot 13 is set with the card of fifth speed position confinement block 45, the only second electricity
Road contact jaw 53 is connected to conductive sheet 11.
The outside of gear confinement block 4 is connect with the cavity lateral wall that 7 upper surface of switch pedestal is opened up by spring, and shelves are made
Position confinement block 4 carries out card to gear slot 13 and sets, and the inside of gear confinement block 4 is semicircle cambered surface, and gear slot 13 is the semicircle of indent
Cambered surface deviates from gear confinement block 4 from gear slot 13, and 4 inner end of gear confinement block and gear slot 13 cooperate
Card is set.
5 upper end of electrical contact end is that semicircle is spherical, and the lower surface of conductive sheet 11 offers annular groove, electrical contact end 5
Upper end is contacted with the opened up annular groove cooperation in 11 lower surface of conductive sheet, is increased the contact surface at electrical contact end 5 and conductive sheet 11, is prevented
Only poor contact.
Circuit connection column 15 be it is cylindric, the outer end edges of circuit connection column 15 are equipped with more connection pawls 19, connection pawl 19
Outer end be equipped with the triangle buckle being inwardly arranged, the outer wall that terminal 16 and circuit connection column 15 contact side is equipped with and buckle
The snap ring of cooperation convenient for the installation to terminal 16, and can prevent terminal 16 from falling off out.
Gear dials 14 and is provided with arrow instruction, and arrow instruction is consistent with the direction of gear slot 13, and switch 9 upper surface of top cover is set
There are five the position indicators of gear confinement block 4, prevent mistake of transferring the files.
Working principle: when the invention works, inside circuit connection column 15 set by 7 lower section of the circuit of user and switch pedestal
Conductive mandril 17 be attached, the conducting connecting bar 6 that the firewire of the first circuit is connect with the first electrical contact end 51 into
Row connection, the conducting connecting bar 6 that the firewire of bypass circuit is connect with bypass circuit contact jaw 52 is attached, by the second electricity
The conducting connecting bar 6 that the firewire on road is connect with second circuit contact jaw 53 is attached, the first circuit, second circuit and bypass
The zero curve of circuit is connect with user.
The positions of 14 pairs of conductive sheets 11 is dialled by rotating gear to be adjusted, when on conductive sheet 11 gear slot 13 and first grade
When position 41 phase card of confinement block is set, the first electrical contact end 51 that the first circuit is connected is connected by conductive sheet 11 and conductive column 10
Logical, conductive column 10 is connected to along user's electrical contact end 18, conductive mandril 17 with subscriber's line circuit, at this point, the first circuit to user into
Row power supply.
When gear slot 13 and the second gear confinement block 42 card are set, bypass circuit exports one and the first circuit by PMW
The voltage being synchronised, the bypass circuit contact jaw 52 that bypass circuit is connected are connected to by conductive sheet 11 with conductive column 10, and with
First circuit in parallel is connected to user.
This needs to disconnect in the first circuit, and gear slot 13 is carried out card with third gear confinement block 43 and is set, and at this time first
Electrical contact end 51 and conductive sheet 11 disconnect, and are powered by bypass circuit to user, after N number of power frequency period t, phase hair
Raw offset, when output voltage is consistent with second circuit voltage, frequency becomes again and synchronized.
And then gear slot 13 and the card of fourth speed position confinement block 44 are set, the second circuit that second circuit is connected at this time connects
Contravention 53 is connected in parallel to the circuit of user by conductive sheet 11 and conductive column 10.
Finally gear slot 13 and the card of fifth speed position confinement block 45 are set, the bypass circuit contact that bypass circuit is connected at this time
End 52 is disconnected with conductive sheet 11, is powered by second circuit, completes switching at this time.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of zero excessive phase-change switch, including Switch main body (1), gearshift (2), circuit connection mechanism (3), feature
Be: the Switch main body (1) includes switch pedestal (7), contact jaw chamber (8) and switch top cover (9), circuit connection mechanism (3)
Including circuit connection column (15) and terminal (16), switch pedestal (7) is cylindrical shape, and switch top cover (9) is that setting is being opened
The upper surface of pedestal (7) is closed, the upper surface of switch pedestal (7) is uniformly provided with three contact jaw chambers (8), and contact jaw chamber (8) is interior
The electrical contact end (5) of cylindrical shape is equipped with above portion, the interior bottom portion of contact jaw chamber (8) is equipped with conducting connecting bar (6), circuit
Contact jaw (5) underrun elastic electric conductor is connect with conducting connecting bar (6), is uniformly set in the middle part of switch pedestal (7) outer wall
There are three circuit connection column (15), it is equipped with a circuit connection column (15) among the lower end surface of switch pedestal (7), is led described in three
Extension bar (6) one end that is electrically connected is penetrated out the centre of three circuit connection columns (15) outward in the middle part of the switch pedestal (7), the switch bottom
Gearshift (2) are equipped with inside seat (7), gearshift (2) includes conductive column (10), conductive sheet (11) and insulating trip (12), institute
Stating conductive column (10) is round bar shape, and conductive column (10) is connect with the inner rotation of switch pedestal (7), the upper end of conductive column (10)
Equipped with conductive sheet (11) and insulating trip (12), conductive sheet (11) and insulating trip (12) are fan-shaped plate body, the side of conductive sheet (11)
Wall offers gear slot (13), and the middle upper part of conductive sheet (11) and insulating trip (12) is equipped with gear by connecting rod and dials (14), institute
It states the upper surface of switch pedestal (7) to open up along the outer wall of conductive sheet (11) and insulating trip (12) there are five cavity, in five cavitys
It is equipped with gear confinement block (4), the lower end of the conductive column (10) opens up through-hole, and through-hole inner upper is contacted equipped with subscriber's line circuit
It holds (18), through-hole lower inside is equipped with conductive mandril (17), and the lower surface of subscriber's line circuit contact jaw (18) passes through elastic conduction
Body is connect with conductive mandril (17), circuit connection column set by lower end edge switch pedestal (7) lower end surface of conductive mandril (17)
(15) it is pierced by, circuit connection column (15) outer end is plugged together with terminal (16) one end.
2. a kind of zero excessive phase-change switch according to claim 1, it is characterised in that: three electrical contact ends
It (5) is respectively the first electrical contact end (51), bypass circuit contact jaw (52), second circuit contact jaw (53), five gear limits
Clamp dog (4) is respectively the first gear confinement block (41), the second gear confinement block (42), third gear confinement block (43), fourth speed
Position confinement block (44) and fifth speed position confinement block (45), the first gear confinement block (41) are arranged at the first electrical contact end (51)
Outside, five gear confinement blocks (4) are 60 ° of distributions counterclockwise along angle spacing.
3. a kind of zero excessive phase-change switch according to claim 1, it is characterised in that: conductive sheet (11) sector
Angle is 120 °, and gear slot (13) is arranged in the middle position of conductive sheet (11) outer wall cambered surface, the angle of insulating trip (12) sector
It is 240 °.
4. a kind of zero excessive phase-change switch according to claim 1, it is characterised in that: the gear confinement block (4)
Outside is connect with the cavity lateral wall that switch pedestal (7) upper surface is opened up by spring, and the inside of gear confinement block (4) is half
Arc surface, gear slot (13) are the semicircle cambered surface of indent, and gear confinement block (4) inner end is set with gear slot (13) cooperation card.
5. a kind of zero excessive phase-change switch according to claim 1, it is characterised in that: on the electrical contact end (5)
End is that semicircle is spherical, and the lower surface of conductive sheet (11) offers annular groove, under the upper end and conductive sheet (11) of electrical contact end (5)
The opened up annular groove cooperation contact in surface.
6. a kind of zero excessive phase-change switch according to claim 1, it is characterised in that: the circuit connection column (15) is
Cylindric, the outer end edges of circuit connection column (15) are equipped with more connection pawls (19), and the outer end of connection pawl (19), which is equipped with, inwardly to be set
The outer wall of the triangle buckle set, terminal (16) and circuit connection column (15) contact side is equipped with and the snap ring that is clasped.
7. a kind of zero excessive phase-change switch according to claim 1, it is characterised in that: the gear dials (14) and is provided with arrow
Head instruction, and arrow instruction it is consistent with the direction of gear slot (13), switch top cover (9) upper surface set there are five gear confinement block
(4) position indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811089668.2A CN109216084B (en) | 2018-09-18 | 2018-09-18 | Zero-transition phase change switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811089668.2A CN109216084B (en) | 2018-09-18 | 2018-09-18 | Zero-transition phase change switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109216084A true CN109216084A (en) | 2019-01-15 |
| CN109216084B CN109216084B (en) | 2024-03-08 |
Family
ID=64983995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811089668.2A Active CN109216084B (en) | 2018-09-18 | 2018-09-18 | Zero-transition phase change switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109216084B (en) |
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| EP0920081A1 (en) * | 1997-11-29 | 1999-06-02 | Preh-Werke GmbH & Co. KG | Rotary switch or resistor |
| US20010023817A1 (en) * | 2000-03-23 | 2001-09-27 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Switch apparatus |
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| CN104900441A (en) * | 2014-03-07 | 2015-09-09 | 福州斯狄渢电热水器有限公司 | Gear switch adjusting device |
| DE102014107273A1 (en) * | 2014-05-23 | 2015-11-26 | Maschinenfabrik Reinhausen Gmbh | Diverter switch for an on-load tap-changer and permanent main switch for this |
| US20160247643A1 (en) * | 2015-02-25 | 2016-08-25 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Switch device |
| CN205159176U (en) * | 2015-11-30 | 2016-04-13 | 孔令权 | Change -over switch |
| CN207097725U (en) * | 2017-06-26 | 2018-03-13 | 瑞安市中联电声乐器有限公司 | A kind of sound pick-up shift switch |
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