CN205140813U - Control and protection switch's arc extinguishing system - Google Patents
Control and protection switch's arc extinguishing system Download PDFInfo
- Publication number
- CN205140813U CN205140813U CN201520900405.0U CN201520900405U CN205140813U CN 205140813 U CN205140813 U CN 205140813U CN 201520900405 U CN201520900405 U CN 201520900405U CN 205140813 U CN205140813 U CN 205140813U
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- arc
- arc quenching
- quenching plate
- plate
- arc extinguishing
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Abstract
The utility model discloses a control and protection switch's arc extinguishing system, include: inside has the cavity, is used for to install the casing of contact group, and the contact that install in the casing, is used for switch -on / disconnection electricity to connect is organized for the arc extinguishing system of the electric arc that elimination contact component produced when disconnected, and exhaust gas's gas vent, the arc extinguishing system includes: the arc extinguishing piece group that constitutes, is used for to cut apart arc length by multi -disc arc extinguishing piece to and the mobile arc extinguishing passageway of pilot arc, its technical essential lies in: arc extinguishing passageway one end opening, the other end seal, be provided with the interface channel who is used for making electric arc entering arc extinguishing passageway between the open end of arc extinguishing passageway and the orbit of electric arc departure, aim at providing one kind and realize zero arcing, the control and protection switch's arc extinguishing system of high life.
Description
Technical field
The present invention relates to a kind of control and protective switch, more particularly it relates to a kind of arc quenching system of control and protective switch.
Background technology
Control and protective switch product adopts modular single product structural shape, be integrated with traditional circuit breaker (fuse), contactor, overload (or overcurrent, disconnected phase) protection relay, starter, the major function of isolator etc., be mainly used in exchanging 50Hz (60Hz), rated voltage is to 690V, rated current is from 0.8A to 630A, adjustable working electric current is connected in the electric power system of 0.8A to 630A, carrying and disjunction normal condition (comprising the overload condition of regulation) under circuit, and can connect, carrying circuit under the non-normal condition (as short circuit) that specifies of disjunction.Control and protective switch is the best substitute products of the low-voltage electrical apparatuses such as circuit breaker, contactor, thermal relay, fuse.
At present, it is the Chinese invention patent of CN201420738826.3 at application number: a kind of arc-control device of control and protective switching device, comprise the arc extinguishing grid pieces assembly be located in pedestal chamber, be placed in the run-on tab bottom pedestal chamber and dividing plate, arc extinguishing grid pieces assembly is with dynamic, between fixed contact combination, there is arc transfer passage area, arc extinguishing grid pieces assembly comprises multiple arc extinguishing grid pieces, multiple arc extinguishing grid pieces is arranged with layered laminate interval, each arc extinguishing grid pieces is being formed with the leg of narrow contracting towards one end of dividing plate, run-on tab is being bent with magnetic conductive board towards the both sides in arc transfer passage area, the side of dividing plate and magnetic conductive board scarf, feature: the opposite side of dividing plate is provided with spaced multiple distance piece in layered laminate, multiple distance piece is corresponding with the position of the leg of multiple arc extinguishing grid pieces, for carrying out separation location between the leg to multiple arc extinguishing grid pieces.
As structure disclosed in above-mentioned patent, arc control device are made up of arc extinguishing grid pieces usually, some arc extinguishing grid pieces arranged in parallel form some arc channel arranged side by side, the direction that flies out of these arc channel and electric arc is just right, thus a long arc is separated in multistage short arc and passes arc channel corresponding with it, thus play arc quenching effect, but this mode can only play the effect of subdividing the arc length, do not increase the flashover distance of electric arc, in the housing of same volume, the flying distance of electric arc is constant, arc quenching effect is difficult to further raising, zero arcing effect cannot be realized.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide the arc quenching system of the control and protective switch that a kind of arc quenching effect is good.
For achieving the above object, the invention provides following technical scheme: a kind of arc quenching system of control and protective switch, comprise: inside has cavity, for installing the housing of sets of contacts, be arranged in housing, for turning on/off the sets of contacts of electrical connection, the arc quenching system of the electric arc produced during for eliminating sets of contacts disjunction, and the exhaust outlet of Exhaust Gas, described arc quenching system comprises: be made up of multi-disc arc quenching plate, for the arc quenching plate group of subdividing the arc length, and the arc extinguishing passage of pilot arc flowing, wherein: described arc extinguishing passage end opening, the other end is closed, the interface channel for making electric arc enter arc extinguishing passage is provided with between the track that the openend of described arc extinguishing passage and electric arc fly out.
By adopting technique scheme, first cut by arc quenching plate component and block long arc, then the arc extinguishing passage of single radial cut is utilized to hold electric arc, electric arc goes out to fly into from the opening of arc extinguishing passage, when reaching the other end, because this end is closed, electric arc refluxes, thus effectively increase the flying distance of electric arc, substantially enhance the arc quenching effect of arc quenching system, realize zero arcing effect.Utilize and add outer arc control device outside contact box, in switch case, ingeniously add arc extinguishing distance, the arc quenching effect of effective reinforcement arc quenching system, originally in breaking through, arc control device enter outer arc control device continuation arc extinguishing from the electric arc that steam vent is discharged arc channel, ensure zero arcing, security performance inherently improves.
The present invention is set to further: described arc quenching plate group comprises arc quenching plate group and lower arc quenching plate group, is separately positioned on electric arc and flies out the both sides of track, form described arc extinguishing passage between adjacent two panels arc quenching plate.
By adopting technique scheme, utilizing and being distributed in the fly out arc quenching plate group on track both sides of electric arc and carrying out splitting to electric arc comprehensively, effectively, maximizing the quantity arrangement of arc extinguishing passage, improve arc quenching effect further.
The present invention is set to further: described upper arc quenching plate group and the nearest arc quenching plate of lower arc quenching plate group middle distance sets of contacts are door arc quenching plate, and all the other are inner arc quenching plate, and the door arc quenching plate alignment in described upper arc quenching plate group and lower arc quenching plate group is arranged.
By adopting technique scheme, when electric arc flies out, the entrance formed through door arc quenching plate enters arc quenching system, and the door arc quenching plate arranged by alignment is produced diffraction phenomena, makes electric arc enter arc extinguishing passage more smoothly, ensures the arc quenching effect of arc quenching system.
The present invention is set to further: the interlaced setting of arc quenching plate in described upper arc quenching plate group and lower arc quenching plate group, the close electric arc of described arc quenching plate fly out track one end on cover have can by the aerogenesis plate of arcing generation air-flow.
By adopting technique scheme, in being crisscross arranged, arc quenching plate is canine tooth shape difference, expand the diffraction of arc quenching plate to electric arc further, make electric arc successively by entering each arc extinguishing passage, strengthen the arc quenching effect of arc quenching system, ensure zero arcing, and during by described aerogenesis plate and arc contacts, heat produces the phenomenon of gas, the insulating properties gas discharged is utilized to strengthen arc quenching effect on the one hand, the generation of insulating properties gas improves the pressure of enclosure interior on the other hand, thus make the gas of enclosure interior formed one towards exhaust outlet flow out air-flow, the heading of effective pilot arc, prevent electric arc from refluxing to sets of contacts generation infringement.Reinforcement effect is risen to the position of arc striking piece, prevents arc striking piece from occurring swinging because electric arc impacts.
It is perpendicular that the present invention is set to described arc quenching plate and the electric arc track that flies out further, described arc quenching plate near electric arc fly out track one end on offer striking groove.
By adopting technique scheme, vertically disposed arc quenching plate makes electric arc enter arc extinguishing passage, it is identical to discharge the angle of arc channel, both electric arc had been avoided to be difficult to enter arc extinguishing passage, can prevent again electric arc from refluxing, and arranging of described striking groove make the segmentation effect of arc quenching plate to electric arc strengthen further.
The present invention is set to further: also comprise outer arc quenching system, and described outer arc quenching system is arranged between switch case and contact box, is provided with arc channel between described arc quenching system and outer arc quenching system.
By adopting technique scheme, utilizing outer arc quenching system to improve the arc extinguishing completeness of this arc quenching system further, to avoid in arc quenching system going out arc danger under fortuitous event such as appearance damage grade.
The present invention is set to further: described arc quenching system also comprises arc striking piece, the root of described upper arc quenching plate group is fixedly connected on arc striking piece, described arc striking piece also offers the guiding groove of " V " type, the notch of described guiding groove is towards sets of contacts, and bottom land is towards arc channel.
By adopting technique scheme, utilizing arc striking piece to carry out the heading of pilot arc, preventing electric arc from directly impacting the inwall of housing, damage is caused to housing.
The present invention is set to further: be set side by side with some outer arc quenching plates successively in described outer arc quenching system, and the direction of described outer arc quenching plate is vertical with arc channel, and described outer arc quenching plate offers interrupter, and described interrupter is irregular to be distributed on outer arc quenching plate.
By adopting technique scheme, the interrupter on described outer arc quenching plate has the effect upsetting track, dispersion electric arc stream to the electric arc that may occur, have very high arc quenching effect.
The present invention is set to further: described arc channel is provided with dodge gate, described dodge gate and contact box hinged, and described dodge gate states arc channel by gravity closing residence, described dodge gate is that semicircle is arranged, described in it, the circle centre position of dodge gate is hinged on the centre of arc channel, and the round edge of described dodge gate is conflicted respectively at the two side of arc channel.
By adopting technique scheme, when switch is in normal condition or do not have electric arc to discharge, described arc channel is closed by dodge gate, prevent steam, dust from entering contact box internal corrosion sets of contacts by arc channel, when there being emergency case to produce, electric arc blows to dodge gate, thus promotion dodge gate opens arc channel, and then blowing-out electric arc, effectively improve installation capability and the useful life of contact box.
The present invention is set to further: described outer arc quenching plate is provided with three, from close to principle arc extinguishing passage successively the first arc quenching plate, the second outer arc quenching plate, the 3rd outer arc quenching plate, interrupter diameter on described first outer arc quenching plate is 1.5mm, interrupter diameter on described second outer arc quenching plate is 1mm, and the interrupter diameter on described 3rd outer arc quenching plate is 0.7mm.
By adopting technique scheme, improve the arc quenching effect of outer arc quenching plate further.
Compared with prior art, the arc quenching system in the present invention utilizes the arc quenching plate group of vertical distribution in electric arc flight path both sides, arc extinguishing passage carries out effective arc extinguishing effect to electric arc, utilizes the arc extinguishing passage of single radial cut formula to significantly improve the flashover distance of electric arc.And effective pilot arc heading is set by aerogenesis plate.Ensure zero arcing.Not only in this, the present invention is also provided with outer arc quenching system and carries out more thorough improvement to arc extinguishing, thus gets rid of any fortuitous event, realizes zero arcing thoroughly.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the embodiment of the present invention;
Fig. 2 is the schematic perspective view of the embodiment of the present invention;
Fig. 3 is the schematic perspective view of arc striking piece in the embodiment of the present invention
Fig. 4 is the schematic perspective view of interior arc quenching plate in the embodiment of the present invention;
Fig. 5 is the electric arc flight path schematic diagram of the embodiment of the present invention;
Fig. 6 is the schematic perspective view of the embodiment of the present invention.
Description of reference numerals: 1, housing; 2, contact box; 3, sets of contacts; 4, interior arc control device; 42, upper arc quenching plate group; 43, lower arc quenching plate group; 44, door arc quenching plate; 45, aerogenesis plate; 5, outer arc control device; 6, arc channel; 7, arc extinguishing passage; 8, arc striking piece; 9, striking groove; 10, guiding groove; 11, reinforcing portion; 12, outer arc quenching plate; 13, interrupter; 14, dodge gate; 15, jointed shaft.
Embodiment
Referring to figs. 1 through Fig. 6, the arc quenching system embodiment of control and protective switch of the present invention is described further.
See Figure of description 1; a kind of arc quenching system of control and protective switch; comprise: inside has cavity, for installing the housing 1 of sets of contacts 3; be arranged in housing 1, for turning on/off the sets of contacts 3 of electrical connection; the arc quenching system of the electric arc produced during for eliminating sets of contacts 3 disjunction; and the exhaust outlet of Exhaust Gas, described arc quenching system comprises: be made up of multi-disc arc quenching plate, for the arc quenching plate group of subdividing the arc length, and the arc extinguishing passage 7 of pilot arc flowing.
Concrete, in described housing 1, there is contact box 2, described contact box 2 internal fixtion one group of sets of contacts 3, this sets of contacts 3 comprises moving contact, fixed contact, wherein: described arc extinguishing passage 7 one end open, the other end are closed, the interface channel for making electric arc enter arc extinguishing passage 7 is provided with between the track that the openend of described arc extinguishing passage 7 and electric arc fly out.Cut by arc quenching plate component and block long arc, then the arc extinguishing passage 7 of single radial cut is utilized to hold electric arc, electric arc goes out to fly into from the opening of arc extinguishing passage 7, when reaching the other end, because this end is closed, electric arc refluxes, thus effectively increases the flying distance of electric arc, substantially enhance the arc quenching effect of arc quenching system, realize zero arcing effect.Utilize and add outer arc control device 5 outside contact box 2, in switch case 1, ingeniously add arc extinguishing distance, the arc quenching effect of effective reinforcement arc quenching system, originally the interior arc control device 4 of breakthrough enter outer arc control device 5 from the electric arc that steam vent is discharged and continue arc extinguishing arc channel 6, ensure zero arcing, security performance inherently improves.
See saying what accompanying drawing 2 and 5, described arc quenching plate group comprises arc quenching plate group 42 and lower arc quenching plate group 43, be separately positioned on electric arc to fly out the both sides of track, described arc extinguishing passage 7 is formed between adjacent two panels arc quenching plate, utilize and be distributed in the fly out arc quenching plate group on track both sides of electric arc and carry out splitting to electric arc comprehensively, effectively, maximize the quantity arrangement of arc extinguishing passage 7, improve arc quenching effect further.Described upper arc quenching plate group 42 and the nearest arc quenching plate of lower arc quenching plate group 43 middle distance sets of contacts 3 are door arc quenching plate 44, all the other are inner arc quenching plate, door arc quenching plate 44 in described upper arc quenching plate group 42 and lower arc quenching plate group 43 aligns and arranges, when electric arc flies out, the entrance formed through door arc quenching plate 44 enters arc quenching system, the door arc quenching plate 44 arranged by alignment, produces diffraction phenomena, make electric arc enter arc extinguishing passage 7 more smoothly, ensure the arc quenching effect of arc quenching system.
See Figure of description 4 and 5, the interlaced setting of arc quenching plate in described upper arc quenching plate group 42 and lower arc quenching plate group 43, the interlaced setting of arc quenching plate in described upper arc quenching plate group and lower arc quenching plate group, the close electric arc of described arc quenching plate fly out track one end on cover have can by the aerogenesis plate 45 of arcing generation air-flow, this aerogenesis plate 45 is preferably PA66 and makes, in being crisscross arranged, arc quenching plate is canine tooth shape difference, expand the diffraction of arc quenching plate to electric arc further, make electric arc successively by entering each arc extinguishing passage 7, strengthen the arc quenching effect of arc quenching system, ensure zero arcing, and during by described aerogenesis plate 45 and arc contacts, PA66 material meets with arc erosion, strong air flow is produced in arc control device, the air-flow discharged is utilized to strengthen arc quenching effect on the one hand, the generation of gas improves the pressure of housing 1 inside on the other hand, thus make the gas of housing 1 inside formed one towards exhaust outlet flow out air-flow, the heading of effective pilot arc, prevent electric arc from refluxing to sets of contacts 3 generation infringement.Reinforcement effect is risen to the position of arc striking piece 8, prevents arc striking piece 8 from occurring swinging because electric arc impacts.
See Figure of description 2 and 5, described arc quenching plate and the electric arc track that flies out is perpendicular, described arc quenching plate near electric arc fly out track one end on offer striking groove 9, vertically disposed arc quenching plate makes electric arc enter arc extinguishing passage 7, it is identical to discharge the angle of arc channel 6, both electric arc had been avoided to be difficult to enter arc extinguishing passage 7, can prevent again electric arc from refluxing, and arranging of described striking groove 9 make the segmentation effect of arc quenching plate to electric arc strengthen further.
Present invention also offers execution mode in second, the difference of itself and technique scheme is: join part Figure of description 1,2 and 3, also comprise outer arc quenching system, described outer arc quenching system is arranged between switch case 1 and contact box 2, arc channel 6 is provided with between described arc quenching system and outer arc quenching system, utilize outer arc quenching system to improve the arc extinguishing completeness of this arc quenching system further, avoid in arc quenching system occur damages grade fortuitous event under go out arc danger.
Described arc quenching system also comprises arc striking piece 8, the root of described upper arc quenching plate group is fixedly connected on arc striking piece 8, described arc striking piece 8 also offers the guiding groove 10 of " V " type, the notch of described guiding groove 10 towards sets of contacts 3, bottom land towards arc channel 6, see Figure of description 3, described arc striking piece 8 is opened and offers slot successively, described upper arc striking piece 8 inserts slot, and one end is provided with bending part, utilizes this bending part to be fixedly connected with arc striking piece 8.Also be extended with reinforcing portion 11 in the below of arc striking piece 8, utilize reinforcing portion 11 to fix the position of this arc striking piece 8.Utilize arc striking piece 8 to carry out the heading of pilot arc, prevent electric arc from directly impacting the inwall of housing 1, damage is caused to housing 1.
Some outer arc quenching plates 12 are set side by side with successively in described outer arc quenching system, the direction of described outer arc quenching plate 12 is vertical with arc channel 6, described outer arc quenching plate 12 offers interrupter 13, described interrupter 13 is irregular to be distributed on outer arc quenching plate 12, interrupter 13 on described outer arc quenching plate 12 has the effect upsetting track, dispersion electric arc stream to the electric arc that may occur, have very high arc quenching effect.
Described arc channel 6 is provided with dodge gate 14, described dodge gate 14 is hinged with contact box 2, and described dodge gate 14 states arc channel 6 by gravity closing residence, described dodge gate 14 is arranged in semicircle, described in it, the circle centre position of dodge gate 14 is hinged on the centre of arc channel 6, the round edge of described dodge gate 14 is conflicted respectively at the two side of arc channel 6, normal condition is at switch, or when not having electric arc to discharge, described arc channel 6 is closed by dodge gate 14, prevent steam, dust enters contact box 2 internal corrosion sets of contacts 3 by arc channel 6, produce when there being emergency case, electric arc blows to dodge gate 14, thus promotion dodge gate 14 opens arc channel 6, and then blowing-out electric arc, effectively improve installation capability and the useful life of contact box 2.
Described outer arc quenching plate 12 is provided with three, from close to the principle arc extinguishing passage 7 successively outer arc quenching plate 12 of the first arc quenching plate 12, second, the 3rd outer arc quenching plate 12, interrupter 13 diameter on described first outer arc quenching plate 12 is 1.5mm, interrupter 13 diameter on described second outer arc quenching plate 12 is 1mm, interrupter 13 diameter on described 3rd outer arc quenching plate 12 is 0.7mm, improves the arc quenching effect of outer arc quenching plate 12 further.
The foregoing is only preferred embodiment of the present invention, be not limited to the present invention, all within design concept of the present invention, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.Be contained within protection scope of the present invention.
Claims (10)
1. the arc quenching system of a control and protective switch, comprise: inside has cavity, for installing the housing of sets of contacts, be arranged in housing, for turning on/off the sets of contacts of electrical connection, the arc quenching system of the electric arc produced during for eliminating sets of contacts disjunction, and the exhaust outlet of Exhaust Gas, described arc quenching system comprises: be made up of multi-disc arc quenching plate, for the arc quenching plate group of subdividing the arc length, and the arc extinguishing passage of pilot arc flowing, it is characterized in that: described arc extinguishing passage end opening, the other end is closed, the interface channel for making electric arc enter arc extinguishing passage is provided with between the track that the openend of described arc extinguishing passage and electric arc fly out.
2. the arc quenching system of control and protective switch according to claim 1; it is characterized in that: described arc quenching plate group comprises arc quenching plate group and lower arc quenching plate group; be separately positioned on electric arc to fly out the both sides of track, between adjacent two panels arc quenching plate, form described arc extinguishing passage.
3. the arc quenching system of control and protective switch according to claim 2; it is characterized in that: described upper arc quenching plate group and the nearest arc quenching plate of lower arc quenching plate group middle distance sets of contacts are door arc quenching plate; all the other are inner arc quenching plate, and the door arc quenching plate alignment in described upper arc quenching plate group and lower arc quenching plate group is arranged.
4. the arc quenching system of control and protective switch according to claim 2; it is characterized in that: the interlaced setting of arc quenching plate in described upper arc quenching plate group and lower arc quenching plate group, the close electric arc of described arc quenching plate fly out track one end on cover have can by the aerogenesis plate of arcing generation air-flow.
5. the arc quenching system of the control and protective switch according to claim 3 or 4, is characterized in that: described arc quenching plate and the electric arc track that flies out is perpendicular, described arc quenching plate near electric arc fly out track one end on offer striking groove.
6. the arc quenching system of control and protective switch according to claim 2, is characterized in that: also comprise outer arc quenching system, and described outer arc quenching system is arranged between switch case and contact box, is provided with arc channel between described arc quenching system and outer arc quenching system.
7. the arc quenching system of control and protective switch according to claim 6; it is characterized in that: described arc quenching system also comprises arc striking piece; the root of described upper arc quenching plate group is fixedly connected on arc striking piece; described arc striking piece also offers the guiding groove of " V " type; the notch of described guiding groove is towards sets of contacts, and bottom land is towards arc channel.
8. the arc quenching system of control and protective switch according to claim 6; it is characterized in that: in described outer arc quenching system, be set side by side with some outer arc quenching plates successively; the direction of described outer arc quenching plate is vertical with arc channel; described outer arc quenching plate offers interrupter, and described interrupter is irregular to be distributed on outer arc quenching plate.
9. the arc quenching system of control and protective switch according to claim 8; it is characterized in that: described arc channel is provided with dodge gate; described dodge gate and contact box hinged; and described dodge gate states arc channel by gravity closing residence; described dodge gate is that semicircle is arranged; described in it, the circle centre position of dodge gate is hinged on the centre of arc channel, and the round edge of described dodge gate is conflicted respectively at the two side of arc channel.
10. the arc quenching system of control and protective switch according to claim 9; it is characterized in that: described outer arc quenching plate is provided with three; from close to principle arc extinguishing passage successively the first arc quenching plate, the second outer arc quenching plate, the 3rd outer arc quenching plate; interrupter diameter on described first outer arc quenching plate is 1.5mm; interrupter diameter on described second outer arc quenching plate is 1mm, and the interrupter diameter on described 3rd outer arc quenching plate is 0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900405.0U CN205140813U (en) | 2015-11-12 | 2015-11-12 | Control and protection switch's arc extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900405.0U CN205140813U (en) | 2015-11-12 | 2015-11-12 | Control and protection switch's arc extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205140813U true CN205140813U (en) | 2016-04-06 |
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ID=55626580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520900405.0U Expired - Fee Related CN205140813U (en) | 2015-11-12 | 2015-11-12 | Control and protection switch's arc extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205140813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321750A (en) * | 2015-11-12 | 2016-02-10 | 浙江欧亿科技有限公司 | Arc extinguishing system for switch control and protection |
| CN115763161A (en) * | 2022-11-23 | 2023-03-07 | 江苏大学扬州(江都)新能源汽车产业研究所 | Automobile window relay for executing safety rollback function |
-
2015
- 2015-11-12 CN CN201520900405.0U patent/CN205140813U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321750A (en) * | 2015-11-12 | 2016-02-10 | 浙江欧亿科技有限公司 | Arc extinguishing system for switch control and protection |
| CN105321750B (en) * | 2015-11-12 | 2017-08-25 | 浙江欧亿科技有限公司 | The arc quenching system of control and protective switch |
| CN115763161A (en) * | 2022-11-23 | 2023-03-07 | 江苏大学扬州(江都)新能源汽车产业研究所 | Automobile window relay for executing safety rollback function |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20181112 |