CN112701540B - High-temperature protection automatic power-off socket - Google Patents
High-temperature protection automatic power-off socket Download PDFInfo
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- CN112701540B CN112701540B CN202011550136.1A CN202011550136A CN112701540B CN 112701540 B CN112701540 B CN 112701540B CN 202011550136 A CN202011550136 A CN 202011550136A CN 112701540 B CN112701540 B CN 112701540B
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- fixedly arranged
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- power
- fixing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
- H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter
Abstract
The invention discloses a high-temperature protection automatic power-off socket, which comprises: the upper cover, the bottom plate, the coaming and the power-off mechanism; the upper cover is arranged at the topmost end of the socket, the floor is a fixed base, the socket is formed into a box shape by a plurality of enclosing plates, and the power-off mechanism comprises a gas box, a gear and the like and is responsible for automatically powering off and protecting the circuit when the power of the circuit is too high and high temperature occurs. The invention can realize the functions of automatically sensing the temperature and protecting the circuit in a power-off manner.
Description
Technical Field
The invention relates to the field of sockets, in particular to a high-temperature protection automatic disconnection socket.
Background
The socket is also called as a power socket and a switch socket. A socket is a receptacle into which one or more circuit connections can be inserted, through which various connections can be inserted. This facilitates the connection with other circuits. The connection and disconnection between the circuit and the copper piece are realized to finally achieve the connection and disconnection of the part of the circuit. When the socket is used for connecting high-power electrical appliances, the socket and the plug can be overheated after working for a long time, if the socket stops working in time, the socket body can be deformed and burnt at high temperature, and even safety accidents occur.
Disclosure of Invention
Aiming at the technical problem, the invention provides an automatic power-off socket with high-temperature protection, which consists of three modules, can automatically sense and detect temperature, automatically power off when the temperature is too high, and can continue to power on the socket through another open end after the temperature is reduced.
A high-temperature protection automatic power-off socket comprises an upper cover, a bottom plate, a coaming and a power-off mechanism; the upper cover comprises: three jacks, two jacks, horizontal groove, circuit board, three jacks set up on the upper cover, two jacks set up on the upper cover, the horizontal groove set up on the upper cover, the circuit board set up the back at the upper cover, upper cover fixed mounting on the bounding wall, bounding wall fixed mounting on the bottom plate. The bounding wall include: the circuit hole is arranged on the coaming.
The power-off mechanism comprises: the electric wire passes through a circuit hole and is fixedly arranged on a bottom plate, one end of the gas box is fixedly arranged on the first fixing seat, the other end of the gas box is fixedly arranged on the second fixing seat, the first fixing seat and the second fixing seat are fixedly arranged on the bottom plate, the pushing bolt is slidably arranged on the gas box, the upper fixing seat I is fixedly arranged on the bottom plate, one end of the electrifying block is fixedly arranged on the upper fixing seat I, the upper fixing seat II is fixedly arranged on the bottom plate, the other end of the electrifying block is fixedly arranged on the upper fixing seat II, the electric connecting plate fixing column is fixedly arranged on the electric wire, the electric connecting plate is rotatably arranged on the electric connecting plate fixing column, the inclined seat is fixedly arranged on the bottom plate, the main fixing seat is fixedly arranged on the bottom plate, the vertical seat is fixedly arranged on the main fixing seat, the vertical sliding plate is slidably arranged on the vertical seat, the small clamping seat is fixedly arranged on the vertical seat, the small rotating wheel is rotatably arranged on the rotating wheel fixing column, the rotating wheel fixing column is fixedly arranged on the vertical sliding plate, the pushing sheet is rotatably arranged on the rotating wheel fixing column, the shifting column is fixedly arranged on the shifting plate, the shifting plate is fixedly arranged on the main rotating shaft, one end of the circular clamping column is fixedly arranged on the shifting plate, the other end of the spring is fixedly arranged on the large rotating wheel through the large rotating wheel, the large rotating wheel is fixedly arranged on the main rotating shaft, the manual button is fixedly arranged on the main rotating shaft, the small rotating wheel is fixedly arranged on the main rotating shaft, the pawl is fixedly arranged on the spring, the spring is fixedly arranged on the spring fixing sheet, the spring fixing sheet is fixedly arranged on the small rotating wheel, the gear is fixedly arranged on the main rotating shaft, the rack is rotatably arranged on the connecting rod, the connecting rod is fixedly arranged on the pushing bolt, the sector gear is fixedly arranged on the rack, the rack with the support post is slidably arranged on the sliding fixing seat, the sliding fixing seat is fixedly arranged on the bottom plate, the support post is fixedly arranged on the rack with the support post, the sliding button is fixedly arranged on the support post, the power connection spring is fixedly arranged on the power connection block, the connector plate is fixedly arranged on the power connection spring, the zero line position is fixedly arranged on the power connection plate, the vertical seat and the vertical sliding plate form sliding fit, the power connection plate and the vertical sliding plate form sliding fit, the small rotating round wheel and the large rotating wheel form rotating fit, the gear and the rack form gear-rack fit, and the sector gear and the rack with the strut form gear-rack fit.
Furthermore, the upper cover is provided with a bulge extending towards the inner side of the socket to clamp the inner side of the enclosing plate.
Furthermore, the four surfaces of the coaming are close to the top end of the upper cover, and are provided with openings which have the same length as the single holes in the three jacks and half the width.
Furthermore, a cover plate is arranged on the gas box to form a closed box.
Furthermore, the gas box is filled with gas, and the gas is helium.
Furthermore, a rubber pad is arranged on the small clamping seat.
Furthermore, the sliding fixing seat is provided with a sliding rail, and the rack with the support is provided with a pulley.
Furthermore, the manual button is made of hard insulating materials, and the sliding button is made of soft insulating materials.
Compared with the prior art, the invention has the beneficial effects that: (1) the detection control is carried out through the non-combustible gas, more power sources do not need to be accessed, and the socket is safer and more environment-friendly. (2) After the high temperature of the line is detected, the automatic power-off can be carried out when the line is heated due to overhigh power, so that the safe control of the line is realized, and the occurrence of fire is reduced. (3) After the automatic power-off, after the temperature reduces, can be through the switch selection, automatic or manual power transmission, give the electricity of socket and continue, need not change the circuit. The operation is simple, convenient and fast, and the utilization rate is high.
Drawings
FIG. 1 is a diagram illustrating the overall effect of the present invention.
Fig. 2 is an overall structural view of the present invention.
Fig. 3 and 4 are schematic views of the cover and shroud of the present invention.
Fig. 5 to 8 are schematic structural views of the power-off mechanism of the present invention.
Fig. 9 is a schematic structural view in a power-on state.
Fig. 10 is a schematic diagram of an automatic power-on structure for power-off selection.
Reference numerals: 1-covering the upper cover; 2-a bottom plate; 3-enclosing plates; 4-a power-off mechanism; 101-three jacks; 102-two jacks; 103-horizontal groove; 104-a circuit board; 301-line hole; 401-an electrical wire; 402-gas box; 403-fixing base one; 404-fixing base two; 405-pushing the plug; 406-a first upper fixing seat; 407-electrifying block; 408-an upper fixed seat II; 409-connecting a board fixing column; 410-a power connection plate; 411-inclined seat; 412-primary mount; 413-vertical seat; 414-vertical sliding plate; 415-a small cassette; 416-rotating the small round wheel; 417-rotating wheel fixing column; 418-pushing piece; 419-toggle column; 420-a toggle plate; 421-round clip column; 422-the rotating wheel is large; 423-main rotating shaft; 424-manual button; 425-small rotating wheel; 426-pawl; 427-a spring; 428-spring fixing piece; 429-gears; 430-a rack; 431-connecting rod; 432-sector gear; 433-rack with pillar; 434-support column; 435-a slide button; 436-sliding fixed seat; 437-contact spring; 438-a joint plate; 439-zero line position; 440-fire line position.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example (b): a high-temperature protection automatic power-off socket comprises an upper cover 1, a bottom plate 2, a coaming 3 and a power-off mechanism 4.
As shown in fig. 1 to 4, three insertion holes 101 are provided in the upper cover 1, two insertion holes 102 are provided in the upper cover 1, a horizontal groove 103 is provided in the upper cover 1, a circuit board 104 is provided on the back surface of the upper cover 1, the upper cover 1 is fixedly mounted on the enclosure 3, and the enclosure 3 is fixedly mounted on the base plate 2. The wiring holes 301 are provided on the shroud 3. The upper cover 1 is provided with a bulge extending towards the inner side of the socket and used for clamping the inner side of the coaming 3. The four faces of the coaming 3 are close to the top end of the upper cover 1 and are provided with openings which have the same length as the single holes in the three jacks 101 and half of the width. The upper cover is clamped on the socket 3, and small openings are formed in the periphery of the upper cover, so that the socket can be conveniently disassembled by tools when a problem occurs in the socket. Normally the upper cover is fixedly mounted on the shroud.
As shown in fig. 5-8, the electric wire 401 passes through the circuit hole 301 and is fixedly installed on the bottom plate 2, one end of the gas box 402 is fixedly installed on the first fixing seat 403, the other end of the gas box 402 is fixedly installed on the second fixing seat 404, and a cover plate is arranged on the gas box 402 to form a closed box. The gas box 402 contains a gas, which is helium. A first fixing seat 403 and a second fixing seat 404 are fixedly arranged on the bottom plate 2, a pushing bolt 405 is slidably arranged on the gas box 402, a first upper fixing seat 406 is fixedly arranged on the bottom plate 2, one end of an electrifying block 407 is fixedly arranged on the first upper fixing seat 406, a second upper fixing seat 408 is fixedly arranged on the bottom plate 2, the other end of the electrifying block 407 is fixedly arranged on the second upper fixing seat 408, an electrifying plate fixing column 409 is fixedly arranged on the electric wire 401, an electrifying plate 410 is rotatably arranged on the electrifying plate fixing column 409, an inclined seat 411 is fixedly arranged on the bottom plate 2, a main fixing seat 412 is fixedly arranged on the bottom plate 2, a vertical seat 413 is fixedly arranged on the main fixing seat 412, a vertical sliding plate 414 is slidably arranged on the vertical seat 413, a small clamping seat 415 is fixedly arranged on the vertical seat 413, a rotary small round wheel 416 is rotatably arranged on a rotary wheel fixing column 417, and the rotary wheel fixing column 417 is fixedly arranged on the vertical sliding plate 414, the pushing piece 418 is rotatably mounted on the rotating wheel fixing column 417, the toggle column 419 is fixedly mounted on the toggle plate 420, the toggle plate 420 is fixedly mounted on the main rotating shaft 423, one end of the circular clamping column 421 is fixedly mounted on the toggle plate 420, the other end passes through the rotating wheel big 422 and is fixedly mounted on the rotating wheel big 422, the rotating wheel big 422 is fixedly mounted on the main rotating shaft 423, the manual button 424 is fixedly mounted on the main rotating shaft 423, the rotating wheel small 425 is fixedly mounted on the main rotating shaft 423, the pawl 426 is fixedly mounted on the spring 427, the spring 427 is fixedly mounted on the spring fixing sheet 428, the spring fixing sheet 428 is fixedly mounted on the rotating wheel small 425, the gear 429 is fixedly mounted on the main rotating shaft 423, the rack 430 is rotatably mounted on the connecting rod 431, the connecting rod 431 is fixedly mounted on the pushing bolt 405, the sector gear 432 is fixedly mounted on the rack 430, the rack 433 with the support is slidably mounted on the sliding fixing seat 436, the sliding fixing seat 436 is fixedly installed on the bottom plate 2, the supporting column 434 is fixedly installed on a rack 433 with a supporting column, the sliding button 435 is fixedly installed on the supporting column 434, the power connection spring 437 is fixedly installed on the power connection block 407, the connector plate 438 is fixedly installed on the power connection spring 437, the zero line position 439 is fixedly installed on the power connection plate 410, the live line position 440 is fixedly installed on the power connection plate 410, the vertical seat 413 and the vertical sliding plate 414 form sliding fit, the power connection plate 410 and the vertical sliding plate 414 form sliding fit, the rotating small round wheel 416 and the rotating wheel big 422 form rotating fit, the gear 429 and the rack 430 form gear-rack fit, and the sector gear 432 and the rack 433 form gear-rack fit. The small clamping seat 415 is provided with a rubber pad. The sliding fixing seat 436 is provided with a sliding rail, and the rack 433 with the support is provided with a pulley. The manual button 424 is a hard insulating material and the sliding button 435 is a soft insulating material.
Under the normal circular telegram circumstances, the electrified board is hugging closely the break-make piece under the circumstances that vertical sliding plate upwards withstood, as shown in fig. 9, promotes the piece and just blocks on little cassette, is provided with the rubber pad on the little cassette for anti-skidding increase frictional force. When circuit power is too high, the condition that generates heat appears, the gas thermal expansion in the gas box this moment, can promote the promotion bolt forward, just supported the pawl owing to promote the bolt, can promote and rotate the little rotation of wheel, take main pivot to rotate then, this moment with main pivot fixed mounting's rotation wheel can rotate greatly, and then the area is dialled the plate and is rotated, when stirring the post on the dialling plate and rotating the slurcam below, just with the slurcam contact, stir, push away the slurcam and drop from the cassette, connect the electric plate whereabouts this moment, do not contact with the circular telegram piece, high temperature automatic power off has been realized.
As shown in fig. 10, when the temperature is reduced and the wires are cooled down, it is still another important point of the present invention that the socket can be powered up manually or automatically. When the temperature reduces, the cooling back, through promoting the sliding button, the cooperation of taking pillar rack and sector gear, and then make rack and gear cooperation, at the gas box cooling, promote the bolt and return, take main pivot to rotate, push away the piece top once more through rotating the big rotation of wheel for the contact of the splice plate in electroplax and the circular telegram piece has realized the function of automatic power transmission. Two line positions, a zero line position and a live line position are arranged on the power-on block, two powers are cut off simultaneously during power-off, and two powers are also continued simultaneously during power-on. The sliding button is made of soft insulating materials, so that the sliding button can keep comfortable hand feeling for safety on one hand and on the other hand.
If automatic power transmission is not needed, the sliding button can be optionally not pushed, manual power supply is selected, the manual button needs to be twisted at the moment, the main rotating shaft is driven to rotate, and the rotating wheel can be used for pushing the vertical sliding plate to the top. It should be noted that, here, due to the installation relationship of the pawl and the spring, the push pin is not moved when the manual button is rotated. Without interfering with the push pin side. The manual button is made of hard insulating materials, on one hand, for safety, on the other hand, the hard materials are convenient to apply force when rotating.
Claims (8)
1. The utility model provides a high temperature protection auto-power-off socket, includes upper cover (1), bottom plate (2), bounding wall (3), outage mechanism (4), its characterized in that:
the upper cover (1) comprises: the novel circuit board comprises three jacks (101), two jacks (102), a horizontal groove (103) and a circuit board (104), wherein the three jacks (101) are arranged on an upper cover (1), the two jacks (102) are arranged on the upper cover (1), the horizontal groove (103) is arranged on the upper cover (1), the circuit board (104) is arranged on the back surface of the upper cover (1), the upper cover (1) is fixedly arranged on a coaming (3), and the coaming (3) is fixedly arranged on a bottom plate (2);
the coaming (3) comprises: the circuit hole (301), the circuit hole (301) is set on the coaming (3);
the power-off mechanism (4) comprises: electric wire (401), gas box (402), fixing base I (403), fixing base II (404), push bolt (405), upper fixing base I (406), electrifying block (407), upper fixing base II (408), electrifying plate fixing column (409), electrifying plate (410), inclined seat (411), main fixing base (412), vertical seat (413), vertical sliding plate (414), small clamping seat (415), small rotating round wheel (416), rotating wheel fixing column (417), push sheet (418), toggle column (419), toggle plate (420), round clamping column (421), rotating wheel big (422), main rotating shaft (423), manual button (424), rotating wheel small (425), pawl (426), spring (427), spring fixing sheet (428), gear (429), rack (430), connecting rod (431), sector gear (432), belt support rack (433), support column (434), The gas box comprises a sliding button (435), a sliding fixing seat (436), a power connection spring (437), a connector plate (438), a zero line position (439) and a live line position (440), wherein the gas box is arranged on a circuit, the electric wire (401) passes through a circuit hole (301) and is fixedly arranged on a bottom plate (2), one end of the gas box (402) is fixedly arranged on a fixing seat I (403), the other end of the gas box is fixedly arranged on a fixing seat II (404), the fixing seat I (403) and the fixing seat II (404) are fixedly arranged on the bottom plate (2), a pushing bolt (405) is slidably arranged on the gas box (402), an upper fixing seat I (406) is fixedly arranged on the bottom plate (2), one end of a power-on block (407) is fixedly arranged on the upper fixing seat I (406), the upper fixing seat II (408) is fixedly arranged on the bottom plate (2), and the other end of the power-on block (407) is fixedly arranged on the upper fixing seat II (408), an electric plate fixing column (409) is fixedly arranged on an electric wire (401), an electric plate (410) is rotatably arranged on the electric plate fixing column (409), an inclined seat (411) is fixedly arranged on a bottom plate (2), a main fixing seat (412) is fixedly arranged on the bottom plate (2), a vertical seat (413) is fixedly arranged on the main fixing seat (412), a vertical sliding plate (414) is slidably arranged on the vertical seat (413), a small clamping seat (415) is fixedly arranged on the vertical seat (413), a small rotating wheel (416) is rotatably arranged on a rotating wheel fixing column (417), a rotating wheel fixing column (417) is fixedly arranged on the vertical sliding plate (414), a pushing sheet (418) is rotatably arranged on the rotating wheel fixing column (417), a toggle column (419) is fixedly arranged on a toggle plate (420), the toggle plate (420) is fixedly arranged on a main rotating shaft (423), one end of a circular clamp column (421) is fixedly arranged on the toggle plate (420), the other end of the spring is fixedly arranged on the large rotating wheel (422) through the large rotating wheel (422), the large rotating wheel (422) is fixedly arranged on a main rotating shaft (423), a manual button (424) is fixedly arranged on the main rotating shaft (423), the small rotating wheel (425) is fixedly arranged on the main rotating shaft (423), a pawl (426) is fixedly arranged on a spring (427), the spring (427) is fixedly arranged on a spring fixing sheet (428), the spring fixing sheet (428) is fixedly arranged on the small rotating wheel (425), a gear (429) is fixedly arranged on the main rotating shaft (423), a rack (430) is rotatably arranged on a connecting rod (431), the connecting rod (431) is fixedly arranged on a pushing bolt (405), a sector gear (432) is fixedly arranged on the rack (430), a support with a pillar (433) is slidably arranged on a sliding rack fixing seat (436), and the sliding fixing seat (436) is fixedly arranged on a bottom plate (2), the support column (434) is fixedly installed on a rack (433) with a support column, the sliding button (435) is fixedly installed on the support column (434), the electric connection spring (437) is fixedly installed on the electric connection block (407), the joint plate (438) is fixedly installed on the electric connection spring (437), the zero line position (439) is fixedly installed on the electric connection plate (410), the fire line position (440) is fixedly installed on the electric connection plate (410), the vertical seat (413) and the vertical sliding plate (414) form sliding fit, the electric connection plate (410) and the vertical sliding plate (414) form sliding fit, the small rotating circular wheel (416) and the large rotating wheel (422) form rotating fit, the gear (429) and the rack (430) form gear-rack fit, and the sector gear (432) and the rack (433) with a support column form gear-rack fit.
2. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: the upper cover (1) is provided with a bulge extending towards the inner side of the socket to clamp the inner side of the coaming (3).
3. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: four faces of the coaming (3) are close to the top end of the upper cover (1) and are provided with openings which have the same length as that of a single hole in the three insertion holes (101) and half of width.
4. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: the gas box (402) is provided with a cover plate to form a closed box.
5. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: the gas box (402) is filled with gas, and the gas is helium.
6. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: the small clamping seat (415) is provided with a rubber pad.
7. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: the sliding fixing seat (436) is provided with a sliding rail, and the rack (433) with the support is provided with a pulley.
8. The high temperature protection auto-power-off socket as claimed in claim 1, wherein: the manual button (424) is made of hard insulating materials, and the sliding button (435) is made of soft insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011550136.1A CN112701540B (en) | 2020-12-24 | 2020-12-24 | High-temperature protection automatic power-off socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011550136.1A CN112701540B (en) | 2020-12-24 | 2020-12-24 | High-temperature protection automatic power-off socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112701540A CN112701540A (en) | 2021-04-23 |
| CN112701540B true CN112701540B (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011550136.1A Active CN112701540B (en) | 2020-12-24 | 2020-12-24 | High-temperature protection automatic power-off socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112701540B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114725707B (en) * | 2022-06-01 | 2022-08-26 | 深圳市华旭达精密电路科技有限公司 | Multilayer flexible circuit board |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202856098U (en) * | 2012-10-15 | 2013-04-03 | 张伟 | Electromagnetic clockwork spring type automatic power-off socket |
| CN103490236A (en) * | 2013-09-27 | 2014-01-01 | 太仓苏易信息科技有限公司 | Power on and power off temperature-controlled socket |
| KR101545198B1 (en) * | 2014-10-07 | 2015-08-20 | 창신정보통신(주) | Concentric plug for power saving, energy saving system and method for energy saving |
| TWI584539B (en) * | 2015-04-01 | 2017-05-21 | 易家居聯網科技有限公司 | Sparkless socket |
| CN105449471B (en) * | 2016-01-05 | 2018-09-04 | 征泰电子有限公司 | Overheat automatic power-off socket |
| US20180301908A1 (en) * | 2017-04-17 | 2018-10-18 | Elemental LED, Inc. | Driver with Pass-Through AC Outlet |
| CN206712156U (en) * | 2017-05-16 | 2017-12-05 | 肇庆学院 | It is a kind of can detection short circuit and high temperature automatically power off alarm security socket |
| CN209709306U (en) * | 2019-06-17 | 2019-11-29 | 徐州工程学院 | Automatic temperature-controlled socket based on marmem |
| CN111342266B (en) * | 2020-03-18 | 2021-05-25 | 江苏创博信息科技有限公司 | A safe socket for big data cloud calculates laboratory computer lab |
| CN111952785A (en) * | 2020-08-13 | 2020-11-17 | 付相勇 | Anti-drop plug and socket based on thermal expansion principle |
-
2020
- 2020-12-24 CN CN202011550136.1A patent/CN112701540B/en active Active
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| CN112701540A (en) | 2021-04-23 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210903 Address after: Huangjing town Xinlian village, Taicang City, Suzhou City, Jiangsu Province Applicant after: TAICANG JINSHILI MARINE ELECTRIC Co.,Ltd. Address before: 650201 No.159 lanhei Road, Kunming City, Yunnan Province Applicant before: Zhang Junfeng |
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