CN110785037A - Motor controller shell with heat radiation structure - Google Patents
Motor controller shell with heat radiation structure Download PDFInfo
- Publication number
- CN110785037A CN110785037A CN201911070535.5A CN201911070535A CN110785037A CN 110785037 A CN110785037 A CN 110785037A CN 201911070535 A CN201911070535 A CN 201911070535A CN 110785037 A CN110785037 A CN 110785037A
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- CN
- China
- Prior art keywords
- heat dissipation
- shell
- sealing
- rod
- sealing structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 96
- 230000017525 heat dissipation Effects 0.000 claims abstract description 70
- 229920001971 elastomer Polymers 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 10
- 229920000459 Nitrile rubber Polymers 0.000 description 6
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
Abstract
The invention discloses a motor controller shell with a heat dissipation structure, which comprises a shell, a mounting plate, a first heat dissipation port, a second heat dissipation port, a coil, a switch button and a sealing mechanism, wherein the sealing mechanism is arranged in the shell, two sealing structures are arranged in the sealing mechanism and respectively correspond to the positions of the heat dissipation holes on the left side and the right side of the shell, the tops of the two sealing structures are respectively connected with a screw rod, threads on the left side and the right side of the screw rod are arranged in a positive and negative tooth manner, the screw rod is rotated through a knob, the screw rod respectively drives the two sealing structures to contract and expand into the shell through the threads on the left side and the right side, when a controller is not used, the two sealing structures are controlled by the knob to seal the two heat dissipation holes, so that external dust is prevented from entering the shell through the heat dissipation holes, and the operation is simple.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a motor controller shell with a heat dissipation structure.
Background
The existing motor controller shell is a cuboid-shaped motor controller shell of a high-power electric vehicle as disclosed in a Chinese patent library, heat dissipation holes are respectively formed in the left side and the right side of the cuboid-shaped controller shell, and ventilation and heat dissipation are carried out on the inside of the motor controller shell through the heat dissipation holes.
The heat dissipation hole of the motor controller shell adopts a through hole type, so that external dust easily enters the shell through the heat dissipation hole, the controller shell is inconvenient to prevent dust, and a circuit board and circuit parts inside the controller are easily damaged.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects of the prior art, the motor controller shell with the heat dissipation structure is provided, and the problems that external dust easily enters the shell through the heat dissipation holes, the controller shell is inconvenient to dust prevention, and a circuit board inside the controller and circuit parts are easily damaged due to the fact that the existing heat dissipation holes are through holes are solved.
(II) technical scheme
The invention is realized by the following technical scheme: the invention provides a motor controller shell with a heat dissipation structure, which comprises a shell and a sealing mechanism, wherein the rear end of the shell is mutually locked with a mounting plate through a bolt, the bottom of the right side of the shell is provided with a first heat dissipation port, the top of the left side of the shell is provided with a second heat dissipation port, two anti-winding coils are embedded in the bottom end of the shell, the front end of the shell is provided with a switch button, the sealing mechanism is used for controlling the opening and closing of the first heat dissipation port and the second heat dissipation port, the sealing mechanism is arranged in the shell and consists of a knob, a transmission rod, a connecting rod, a first sealing structure and a second sealing structure, the left end of the knob is mutually inserted into the transmission rod, the left end of the transmission rod extends into the shell, the right bottom end of the transmission rod is mutually welded with the connecting rod, the left end of the transmission rod is mutually welded with the, the first sealing structure and the second sealing structure are respectively locked with the shell.
Furthermore, the transmission rod is composed of a screw rod, a first sliding block, a second sliding block and a fixed bearing, the first sliding block and the second sliding block are respectively sleeved on the outer side of the screw rod and are respectively in threaded connection with the screw rod, the outer side of the screw rod penetrates through the fixed bearing to be mutually inserted into the knob, the fixed bearing is embedded into the shell, the bottom end of the first sliding block is mutually welded with the connecting rod, and the left end of the second sliding block is mutually welded with the second sealing structure.
Furthermore, the first sealing structure is composed of a supporting rod, sealing rubber plates, a sleeve, a polish rod and a fixing block, the right end of the supporting rod is respectively and mutually locked with the four sealing rubber plates through bolts, the bottom end of the supporting rod is mutually welded with the sleeve, the sleeve is sleeved on the outer side of the polish rod and slides left and right along the polish rod, the left end and the right end of the polish rod are respectively and mutually locked with the fixing block, the fixing block is mutually locked with the shell through bolts, and the top end of the supporting rod is mutually welded with the connecting rod.
Furthermore, the first sealing structure and the second sealing structure are consistent in structure and are arranged diagonally, and the supporting rod of the second sealing structure is welded with the second sliding block.
Furthermore, the threads on the left side and the right side of the screw rod are arranged in a positive and negative thread mode, and the first sliding block and the second sliding block are respectively meshed with the positive and negative threads on the left side and the right side.
Furthermore, the number of the sealing rubber plates of the first sealing structure and the second sealing structure is four, and the inner walls of the first heat dissipation opening and the second heat dissipation opening are attached to the sealing rubber plates.
Furthermore, the first heat dissipation port is in a strip shape and is provided with four, and the size and the shape of the first heat dissipation port are consistent with those of the second heat dissipation port.
Furthermore, the lead screw is made of stainless steel materials, so that the lead screw is high in hardness, not easy to damage and not easy to rust.
Furthermore, the sealing rubber plate is made of a butadiene-acrylonitrile rubber material.
(III) advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
in order to solve the problems that the prior heat dissipation holes are through holes, external dust is easy to enter the shell through the heat dissipation holes, the controller shell is inconvenient to prevent dust, and circuit boards and circuit parts inside the controller are easy to damage, the invention arranges two sealing structures inside the sealing mechanism by installing a sealing mechanism in the shell, the two sealing structures are respectively corresponding to the positions of the heat dissipation holes on the left side and the right side of the shell, the tops of the two sealing structures are respectively connected with a screw rod, the screw rod is rotated by a knob, the screw rod respectively drives the two sealing structures to contract and expand into the shell through the screw threads on the left side and the right side, when the controller is not used, the two sealing structures are controlled by the rotating knob to seal the two heat dissipation holes, so as to avoid the external dust from entering the shell through the heat dissipation holes, the dustproof effect of the shell is improved, and the operation is simple.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view showing the internal structure of the case according to the present invention;
FIG. 3 is a schematic view of the structure of the transmission rod of the present invention;
fig. 4 is a structural schematic diagram of a first sealing structure of the present invention.
In the figure: the heat-insulation device comprises a shell-1, a mounting plate-2, a first heat-dissipation opening-3, a second heat-dissipation opening-4, a coil-5, a switch key-6, a sealing mechanism-7, a knob-71, a transmission rod-72, a connecting rod-73, a first sealing structure-74, a second sealing structure-75, a screw rod-721, a first sliding block-722, a second sliding block-723, a fixed bearing-724, a support rod-741, a sealing rubber plate-742, a sleeve-743, a polish rod-744 and a fixed block-745.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a motor controller housing with a heat dissipation structure: comprises a shell 1 and a sealing mechanism 7, wherein the rear end of the shell 1 is mutually locked with a mounting plate 2 through a bolt, the bottom of the right side of the shell 1 is provided with a first heat dissipation port 3, the top of the left side of the shell 1 is provided with a second heat dissipation port 4, two anti-coil 5 are embedded in the bottom end of the shell 1, the front end of the shell 1 is provided with a switch button 6, the sealing mechanism 7 is used for controlling the opening and closing of the first heat dissipation port 3 and the second heat dissipation port 4, the sealing mechanism 7 is arranged in the shell 1, the sealing mechanism 7 comprises a knob 71 and a transmission rod 72, the left end of the knob 71 is inserted into the transmission rod 72, the left end of the transmission rod 72 extends into the shell 1, the bottom end of the right side of the transmission rod 72 is welded with the connecting rod 73, the left end of the transmission rod 72 is welded with the second sealing structure 75, the bottom end of the connecting rod 73 is welded with the first sealing structure 74, and the first sealing structure 74 and the second sealing structure 75 are respectively locked with the shell 1.
The transmission rod 72 is composed of a screw rod 721, a first slider 722, a second slider 723 and a fixed bearing 724, the first slider 722 and the second slider 723 are respectively sleeved outside the screw rod 721 and are respectively in threaded connection with the screw rod 721, the outside of the screw rod 721 penetrates through the fixed bearing 724 to be mutually inserted into the knob 71, the fixed bearing 724 is embedded in the shell 1, the bottom end of the first slider 722 is mutually welded with the connecting rod 73, and the left end of the second slider 723 is mutually welded with the second sealing structure 75.
The first sealing structure 74 is composed of a supporting rod 741, sealing rubber plates 742, sleeves 743, a polish rod 744 and a fixing block 745, the right end of the supporting rod 741 is locked with the four sealing rubber plates 742 through bolts, the bottom end of the supporting rod 741 is welded with the sleeves 743, the sleeves 743 are sleeved outside the polish rod 744 and slide left and right along the polish rod 744, the left end and the right end of the polish rod 744 are locked with the fixing block 745, the fixing block 745 is locked with the housing 1 through bolts, and the top end of the supporting rod 741 is welded with the connecting rod 73.
The first sealing structure 74 and the second sealing structure 75 have the same structure and are diagonally arranged, and the supporting rod 741 and the second slider 723 of the second sealing structure 75 are welded to each other, which is beneficial to sealing the first slider 722 and the second slider 723 through the first sealing structure 74 and the second sealing structure 75.
The threads on the left side and the right side of the screw rod 721 are arranged in a positive and negative thread manner, and the positive and negative threads on the left side and the right side of the first sliding block 722 and the second sliding block 723 are respectively engaged, so that the first sliding block 722 and the second sliding block 723 are controlled to expand and contract when the screw rod 721 rotates.
The sealing rubber plates 742 of the first sealing structure 74 and the second sealing structure 75 are four, and the inner walls of the first heat dissipation opening 3 and the second heat dissipation opening 4 are attached to the sealing rubber plates 742, so that the first heat dissipation opening 3 and the second heat dissipation opening 4 can be respectively sealed by the sealing rubber plates 742 of the first sealing structure 74 and the second sealing structure 75.
The first heat dissipation port 3 is in a strip shape and is provided with four heat dissipation ports, and the size and the shape of the first heat dissipation port 3 are consistent with that of the second heat dissipation port 4, so that the heat dissipation effect inside the shell 1 can be increased.
The lead screw 721 is made of stainless steel, has high hardness, is not easy to damage and is not easy to rust.
The sealing rubber plate 742 is made of nitrile rubber.
This patent sealing rubber plate 742 adopt the butadiene acrylonitrile rubber material to make, butadiene acrylonitrile rubber is made through the emulsion polymerization by butadiene and acrylonitrile, and butadiene acrylonitrile rubber mainly adopts low temperature emulsion polymerization production, and the oil resistance is fabulous, and the wearability is higher, and the heat resistance is better, and the adhesion is strong, and butadiene acrylonitrile rubber mainly used makes resistant oil rubber goods.
The working principle is as follows: before use, firstly, a control circuit board is installed in a shell 1, a power line extends into the shell 1 through a coil preventing ring 5 to be connected with the circuit board, and a switch key 6 is connected with the circuit board through a lead, when the switch key is used, air is fed from a first heat dissipation port 3 to dissipate heat of the circuit board, hot air forms updraft to be discharged through a second heat dissipation port 4, when a controller is not used, in order to prevent external dust from entering into the shell 1 through the first heat dissipation port 3 and the second heat dissipation port 4, a knob 71 is rotated, the knob 71 drives the circle center of the right end of a screw rod 721 to rotate, the screw rod 721 is supported through a fixed bearing 724, threads on the left side and the right side of the screw rod 721 are arranged in a positive and negative thread manner, and a first sliding block 722 and a second sliding block 723 are respectively meshed in the positive and negative thread manner and the negative thread manner on the left side and the right side of the first sliding block 722 and the second sliding, and because the sleeve 743 of the first sealing structure 74 and the second sealing structure 75 is limited by the polish rod 744, the first slider 722 and the second slider 723 are expanded by controlling the rotation direction of the knob 71, the first slider 722 drives the first sealing structure 74 and the second sealing structure 75 to be pushed out through the second slider 723, and the supporting rod 741 of the first sealing structure 74 and the second sealing structure 75 slides along the polish rod 744 through the sleeve 743, the sealing rubber plates 742 on the first sealing structure 74 and the second sealing structure 75 are inserted into the first heat dissipation port 3 and the second heat dissipation port 4 to close the housing 1, so that external dust is prevented from entering the housing 1 through the first heat dissipation port 3 and the second heat dissipation port 4, and the dustproof effect of the housing 1 is improved.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A motor controller shell with a heat dissipation structure comprises a shell (1), wherein the rear end of the shell (1) is mutually locked with a mounting plate (2) through a bolt, a first heat dissipation port (3) is formed in the bottom of the right side of the shell (1), a second heat dissipation port (4) is formed in the top of the left side of the shell (1), two anti-winding coils (5) are embedded in the bottom end of the shell (1), and a switch button (6) is mounted at the front end of the shell (1);
it is characterized by also comprising a sealing mechanism (7), wherein the sealing mechanism (7) is used for controlling the opening and closing of the first heat dissipation port (3) and the second heat dissipation port (4), a sealing mechanism (7) is arranged in the shell (1), the sealing mechanism (7) is composed of a knob (71), a transmission rod (72), a connecting rod (73), a first sealing structure (74) and a second sealing structure (75), the left end of the knob (71) is mutually inserted with the transmission rod (72), the left end of the transmission rod (72) extends into the shell (1), the bottom end of the right side of the transmission rod (72) is welded with the connecting rod (73), the left end of the transmission rod (72) is welded with the second sealing structure (75), the bottom end of the connecting rod (73) is welded with the first sealing structure (74), and the first sealing structure (74) and the second sealing structure (75) are respectively locked with the shell (1).
2. The motor controller housing having a heat dissipation structure as set forth in claim 1, wherein: the transmission rod (72) is composed of a screw rod (721), a first sliding block (722), a second sliding block (723) and a fixed bearing (724), the first sliding block (722) and the second sliding block (723) are respectively sleeved on the outer side of the screw rod (721) and are respectively in threaded connection with the screw rod (721), the outer side of the screw rod (721) penetrates through the fixed bearing (724) to be mutually inserted with a knob (71), the fixed bearing (724) is embedded in the shell (1), the bottom end of the first sliding block (722) is mutually welded with the connecting rod (73), and the left end of the second sliding block (723) is mutually welded with a second sealing structure (75).
3. The motor controller housing having a heat dissipation structure as set forth in claim 1, wherein: the first sealing structure (74) is composed of a supporting rod (741), sealing rubber plates (742), sleeves (743), a polish rod (744) and a fixing block (745), the right end of the supporting rod (741) is locked with the four sealing rubber plates (742) through bolts respectively, the bottom end of the supporting rod (741) is welded with the sleeves (743), the sleeves (743) are sleeved on the outer side of the polish rod (744) and slide left and right along the polish rod (744), the left end and the right end of the polish rod (744) are locked with the fixing block (745) respectively, the fixing block (745) is locked with the shell (1) through bolts, and the top end of the supporting rod (741) is welded with the connecting rod (73).
4. The motor controller housing having a heat dissipation structure as set forth in claim 1, wherein: the first sealing structure (74) and the second sealing structure (75) are consistent in structure and are diagonally arranged, and the supporting rod (741) of the second sealing structure (75) is welded with the second sliding block (723).
5. The motor controller housing having a heat dissipation structure as set forth in claim 2, wherein: the threads on the left side and the right side of the screw rod (721) are arranged in a positive and negative thread mode, and the positive and negative threads on the left side and the right side of the first sliding block (722) are meshed with the positive and negative threads on the second sliding block (723) respectively.
6. The motor controller housing having a heat dissipation structure as set forth in claim 1, wherein: the number of the sealing rubber plates (742) of the first sealing structure (74) and the number of the sealing rubber plates (742) of the second sealing structure (75) are four, and the inner walls of the first heat dissipation port (3) and the second heat dissipation port (4) are attached to the sealing rubber plates (742).
7. The motor controller housing having a heat dissipation structure as set forth in claim 1, wherein: the first heat dissipation port (3) is in a strip shape and is provided with four, and the first heat dissipation port (3) and the second heat dissipation port (4) are identical in size and shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911070535.5A CN110785037B (en) | 2019-11-05 | 2019-11-05 | Motor controller shell with heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911070535.5A CN110785037B (en) | 2019-11-05 | 2019-11-05 | Motor controller shell with heat radiation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110785037A true CN110785037A (en) | 2020-02-11 |
| CN110785037B CN110785037B (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911070535.5A Active CN110785037B (en) | 2019-11-05 | 2019-11-05 | Motor controller shell with heat radiation structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN110785037B (en) |
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| CN201142804Y (en) * | 2007-11-24 | 2008-10-29 | 陈劲游 | Heat insulating ventilating device of outdoor electric appliance box |
| CN201623905U (en) * | 2010-03-30 | 2010-11-03 | 扬州润光照明电器有限公司 | Electrodeless lamp power supply box |
| CN203618260U (en) * | 2013-11-14 | 2014-05-28 | 重庆第二机床厂有限责任公司 | Automatic line single machine electrical cabinet |
| CN207516409U (en) * | 2017-12-15 | 2018-06-19 | 广州合众自动化科技有限公司 | A kind of power supply box for needle or pin for facilitating repair |
| CN207589286U (en) * | 2017-11-30 | 2018-07-06 | 深圳市视显光电技术有限公司 | Pcb board width limiting device |
| CN207969281U (en) * | 2018-04-09 | 2018-10-12 | 上海权策微电子技术有限公司 | A kind of BMS communication test devices convenient for heat dissipation |
| CN108750384A (en) * | 2018-06-29 | 2018-11-06 | 方小玲 | It is a kind of to carry easily network router |
| CN109257899A (en) * | 2018-10-29 | 2019-01-22 | 电子科技大学中山学院 | Waterproof small and special motor controller |
| CN209071915U (en) * | 2018-12-01 | 2019-07-05 | 山东科技大学 | A kind of Electric control case convenient for heat dissipation |
-
2019
- 2019-11-05 CN CN201911070535.5A patent/CN110785037B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201142804Y (en) * | 2007-11-24 | 2008-10-29 | 陈劲游 | Heat insulating ventilating device of outdoor electric appliance box |
| CN201623905U (en) * | 2010-03-30 | 2010-11-03 | 扬州润光照明电器有限公司 | Electrodeless lamp power supply box |
| CN203618260U (en) * | 2013-11-14 | 2014-05-28 | 重庆第二机床厂有限责任公司 | Automatic line single machine electrical cabinet |
| CN207589286U (en) * | 2017-11-30 | 2018-07-06 | 深圳市视显光电技术有限公司 | Pcb board width limiting device |
| CN207516409U (en) * | 2017-12-15 | 2018-06-19 | 广州合众自动化科技有限公司 | A kind of power supply box for needle or pin for facilitating repair |
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| CN110785037B (en) | 2021-07-02 |
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Effective date of registration: 20240205 Address after: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 212000, No. 2, Mengxi Road, Zhenjiang, Jiangsu Patentee before: JIANGSU University OF SCIENCE AND TECHNOLOGY Country or region before: China |
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