CN114650686B - Switching power supply suitable for humid environment - Google Patents
Switching power supply suitable for humid environment Download PDFInfo
- Publication number
- CN114650686B CN114650686B CN202210452294.6A CN202210452294A CN114650686B CN 114650686 B CN114650686 B CN 114650686B CN 202210452294 A CN202210452294 A CN 202210452294A CN 114650686 B CN114650686 B CN 114650686B
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- Prior art keywords
- wall
- fixedly connected
- power supply
- switching power
- lifting plate
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Classifications
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- 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
- H05K5/0217—Mechanical details of casings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/263—Drying gases or vapours by absorption
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
Abstract
The invention discloses a switching power supply suitable for a humid environment, and relates to the technical field of power supply circuits. This switching power supply suitable for under humid environment, which comprises a housin, casing lateral wall slidable mounting has the closure plate, closure plate inner wall and first telescopic link top fixed connection, first telescopic link bottom and lifting plate upper surface fixed connection, closure plate inner wall and first reset spring top fixed connection, first reset spring bottom and lifting plate upper surface fixed connection, the closure plate is provided with fixed subassembly and filter screen section of thick bamboo joint through its inner wall. This switching power supply suitable for under humid environment is through being provided with the filter screen section of thick bamboo that can place water absorbent resin for when casing inside air and external UNICOM, moisture in the external environment air can be absorbed by water absorbent resin, when guaranteeing the inside dry of casing, makes casing inside air can link to each other with the external world, improves the radiating effect of device.
Description
Technical Field
The invention relates to the technical field of power supply circuits, in particular to a switching power supply suitable for a humid environment.
Background
The switch mode power supply is also called a switching power supply and a switching converter, is a high-frequency electric energy conversion device, and is a power supply device, and has the functions of converting voltage with one standard into voltage or current required by a user end through different forms of structures, wherein the input of the switch power supply is mostly alternating current power supply or direct current power supply, and the output of the switch power supply is mostly equipment requiring direct current power supply, so that the switch power supply plays a role in converting voltage and current between the two power supplies, and the switch power supply is quite widely used in life.
The existing switching power supply has the problems that the application range is wide, when the switching power supply is applied to an external natural environment or a humid environment of a living area, the moisture content in the air is good, and meanwhile, the switching power supply needs to be communicated with the external environment to strengthen the heat dissipation effect of a device due to the heat generated by the working of the switching power supply, so that the exposed part of the switching power supply is easily corroded by humid air, the power transmission efficiency of the switching power supply is reduced due to light weight, serious accidents such as fire disaster and the like are easily caused due to heavy weight, the potential safety hazard is quite high, and the applicability of the switching power supply is reduced; in view of this, we have devised a switching power supply suitable for use in humid environments.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a switching power supply suitable for a humid environment, and solves the problems mentioned in the background art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a switching power supply suitable for under humid environment, includes the casing, casing outer wall fixed mounting has the side ear, shells inner wall fixed mounting has power module, shells inner wall fixed mounting has the connector, shells lateral wall slidable mounting has the closure plate, shells inner wall is provided with the anti-shock subassembly, closure plate inner wall and first telescopic link top fixed connection, first telescopic link bottom and lifting plate upper surface fixed connection, closure plate inner wall and first reset spring top fixed connection, first reset spring bottom and lifting plate upper surface fixed connection, lifting plate inside is provided with the chucking subassembly, the closure plate is provided with fixed subassembly and filter screen section of thick bamboo joint through its inner wall.
Preferably, the anti-impact assembly comprises a second telescopic rod, the right end of the second telescopic rod is fixedly connected with the left outer wall of the connecting sliding block, the inner wall of the shell is fixedly connected with the left end of the primary buffer spring, and the right end of the primary buffer spring is fixedly connected with the left outer wall of the connecting sliding block.
Preferably, the shell inner wall is fixedly connected with the lower surface of the fixed buffer block, the outer wall on the right side of the fixed buffer block is fixedly connected with the left end of the third telescopic rod, the right end of the third telescopic rod is fixedly connected with the left outer wall of the contact sliding block, the outer wall on the right side of the fixed buffer block is fixedly connected with the left outer wall of the secondary buffer spring, and the right end of the secondary buffer spring is fixedly connected with the left outer wall of the contact sliding block.
Preferably, the clamping assembly comprises a sliding rod, an arc pressing block is fixedly arranged at the bottom end of the sliding rod, a baffle penetrates through the sliding rod, the baffle is fixedly connected with the top end of the sliding rod, the lower surface of the baffle is fixedly connected with the top end of a clamping spring, the bottom end of the clamping spring is fixedly connected with the inner wall of a lifting plate, and a guide rod is fixedly arranged on the upper surface of the arc pressing block.
Preferably, the inner wall of the lifting plate is provided with a chute with the same size as the guide rod.
Preferably, the fixed subassembly is including the button, the button runs through there is first ratch, and first ratch tip and button fixed connection, button lateral wall and second reset spring left end fixed connection, second reset spring right-hand member and closure plate outer wall fixed connection.
Preferably, the first gear is rotatably arranged on the inner wall of the closing plate, the second gear is coaxially and fixedly arranged on the first gear, the second toothed bar is slidably connected with the inner wall of the closing plate, and the limiting teeth are fixedly arranged at the end part of the second toothed bar.
Preferably, the outer wall of the filter screen cylinder is provided with a limit groove with the same size as the limit teeth.
Preferably, an annular placing groove capable of placing water absorbent resin is formed in the filter screen barrel.
(III) beneficial effects
The invention provides a switching power supply suitable for a humid environment. The beneficial effects are as follows:
(1) When the switch power supply suitable for the humid environment is used, the filter screen cylinder capable of containing the water-absorbing resin is arranged, so that when the air inside the shell is communicated with the outside, the water in the air in the outside environment can be absorbed by the water-absorbing resin, the drying inside the shell is ensured, the air inside the shell can be connected with the outside, and the heat dissipation effect of the device is improved.
(2) When the switch power supply suitable for the humid environment is used, the button is pressed to one side of the closing plate, the second gear is matched, the second toothed bar drives the limiting teeth to move in the horizontal direction along the inner wall of the closing plate, and then the limiting teeth are separated from the limiting grooves formed in the outer wall of the filter screen cylinder, so that the filter screen cylinder can be pulled out by a worker outwards, and the water-absorbent resin inside the filter screen cylinder can be replaced and cleaned by the worker regularly, so that the drying effect inside the shell is guaranteed.
(3) This switching power supply suitable for under humid environment is when using, through being provided with chucking subassembly for the arc presses the briquetting to press from both sides tightly the electric wire, avoids the device to receive the damage owing to external pulling leads to the connector after finishing connecting, simultaneously presses the sponge layer that the briquetting lower surface set up through the arc, guarantees that inside can not get into humid air of casing, and then guarantees the safe operation of device.
(4) When the switch power supply suitable for the humid environment is used, the anti-impact assembly is arranged, when the closing plate is impacted by splashes or small animals in the external environment, the first-level buffer spring and the second-level buffer spring are matched, a good buffer protection effect is provided for the closing plate, and then the device is effectively protected from the impact influence caused by people or small animals in the external environment, so that the stable operation of the device is ensured.
(5) When the switch power supply suitable for the humid environment is used, the arc pressing block always keeps moving along the outer wall direction of the closing plate by the guide rod, so that abrasion between the sliding rod and the lifting plate is reduced.
(6) When the switch power supply suitable for the humid environment is used, when external connection equipment is needed to be connected with the connector, the lifting plate is pushed upwards along the outer wall of the closing plate, so that gaps are exposed between the lifting plate and the closing plate, and the switch power supply is convenient for workers to connect the external connection device with the connector.
Drawings
FIG. 1 is a schematic view of the structure of the main body of the present invention;
FIG. 2 is a schematic side view in cross section of the present invention;
FIG. 3 is a schematic view in elevation of a closure panel of the present invention;
FIG. 4 is a schematic view of the structure of the area A in FIG. 2 in a partially enlarged manner according to the present invention;
FIG. 5 is a schematic view of the structure of the area B of FIG. 2 in an enlarged partial view according to the present invention;
FIG. 6 is a schematic view of the structure of the lift plate of the present invention;
fig. 7 is a schematic structural view of the filter cartridge of the present invention.
In the figure: 1. a housing; 2. a lateral ear; 3. a power module; 4. a connector; 5. a closing plate; 6. an impact assembly; 61. a second telescopic rod; 62. the connecting slide block; 63. a first-stage buffer spring; 64. fixing a buffer block; 65. a third telescopic rod; 66. a contact slider; 67. a secondary buffer spring; 7. a first telescopic rod; 8. a lifting plate; 9. a first return spring; 10. a clamping assembly; 101. a slide bar; 102. pressing the block in an arc shape; 103. a baffle; 104. a clamping spring; 105. a guide rod; 11. a fixing assembly; 111. a button; 112. a first toothed bar; 113. a second return spring; 114. a first gear; 115. a second gear; 116. a second toothed bar; 117. limit teeth; 12. a filter screen cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a switching power supply suitable for under humid environment, including casing 1, casing 1 outer wall fixed mounting has the side ear 2, through being provided with multiunit side ear 2, make things convenient for switching power supply to install, casing 1 inner wall fixed mounting has power module 3, casing 1 inner wall fixed mounting has connector 4, through be provided with connector 4 in power module 3 both sides for switching power supply is connected with output and input, casing 1 lateral wall slidable mounting has closure board 5, make closure board 5 can follow casing 1 inner wall and move in the horizontal direction, casing 1 inner wall is provided with protection subassembly 6, protection subassembly 6 is including second telescopic link 61, second telescopic link 61 right-hand member and connection slider 62 left side outer wall fixed connection, connection slider 62 upper surface and closure board 5 lower surface fixed connection, casing 1 inner wall and one-level buffer spring 63 left end fixed connection, one-level buffer spring 63 right-hand member and connection slider 62 left side outer wall fixed connection, one-level buffer spring 63 cup joints in the second telescopic link 61 outside, through being provided with one-level buffer spring 63, when closure board 5 receives splashing or little animal slider 62 in the external environment, protection effect is provided for the horizontal direction at the closure board.
In this embodiment, the inner wall of the housing 1 is fixedly connected with the lower surface of the fixed buffer block 64, the outer wall of the right side of the fixed buffer block 64 is fixedly connected with the left end of the third telescopic rod 65, the right end of the third telescopic rod 65 is fixedly connected with the outer wall of the left side of the contact slide block 66, the lower surface of the contact slide block 66 is slidably connected with the inner wall of the housing 1, the outer wall of the right side of the fixed buffer block 64 is fixedly connected with the outer wall of the left side of the second buffer spring 67, the right end of the second buffer spring 67 is fixedly connected with the outer wall of the left side of the contact slide block 66, the second buffer spring 67 is sleeved on the outer side of the third telescopic rod 65, so that when the closure plate 5 receives a larger impact force, the connecting slide block 62 moves leftwards along the inner wall of the housing 1 in the horizontal direction for a certain distance, the outer wall of the contact slide block 66 contacts with the outer wall of the left side of the connecting slide block 62, and the second buffer spring 67 is matched, so that a further buffer protection effect is provided for the closure plate 5, and further effective protection devices are prevented from the impact caused by people or small animals in the external environment, and stable operation of the device is ensured.
In the embodiment, the inner wall of the closing plate 5 is fixedly connected with the top end of a first telescopic rod 7, the bottom end of the first telescopic rod 7 is fixedly connected with the upper surface of a lifting plate 8, the lifting plate 8 is in sliding connection with the inner wall of the closing plate 5, the side wall of the lifting plate 8 is provided with a strip-shaped limiting strip, meanwhile, the inner wall of the closing plate 5 is provided with a sliding groove with the same size as the strip-shaped limiting strip, the lifting plate 8 can move in the vertical direction along the inner wall of the closing plate 5, the inner wall of the closing plate 5 is fixedly connected with the top end of a first reset spring 9, the bottom end of the first reset spring 9 is fixedly connected with the upper surface of the lifting plate 8, the first reset spring 9 is sleeved outside the first telescopic rod 7, after the lifting plate 8 is released by a worker, the lifting plate 8 moves downwards in the vertical direction along the inner wall of the closing plate 5 due to the elastic force of the first reset spring 9, the lifting plate 8 is attached to the bottom of the closing plate 5 to realize the fixed clamping of the electric wire of the external connection equipment, the clamping assemblies 10 are arranged in the lifting plate 8, the two groups of clamping assemblies 10 are symmetrically arranged in the lifting plate 8 and the closing plate 5 by taking the lower surface of the lifting plate 8 as a symmetrical plane in the initial state, the clamping assembly 10 further improves the clamping sealing effect of the device on the electric wire of the external equipment by being provided with the two groups of clamping assemblies 10, the clamping assemblies 10 comprise a slide bar 101, the inner wall of the lifting plate 8 is in sliding connection with the slide bar 101, the bottom end of the slide bar 101 is fixedly provided with an arc pressing block 102, the lower surface of the arc pressing block 102 is provided with a layer of sponge layer to ensure the tightness of a gap between the lifting plate 8 and the closing plate 5 when the electric wire is pressed by the arc pressing block 102, the moist air in the external environment is prevented from entering the inside the shell 1, the slide bar 101 is penetrated by a baffle 103, and baffle 103 and slide bar 101 top fixed connection, baffle 103 lower surface and clamping spring 104 top fixed connection, clamping spring 104 bottom and lifting plate 8 inner wall fixed connection, clamping spring 104 cup joints in the slide bar 101 outside, when needs use external connection equipment to be connected with connector 4, through upwards promote lifting plate 8 along closure plate 5 outer wall, and then make expose the gap between lifting plate 8 and the closure plate 5, thereby make things convenient for the staff to link to each other external connection device and connector 4, after the connection finishes, the staff puts down lifting plate 8, through being provided with chucking subassembly 10, and then make arc press block 102 press from both sides the electric wire to clamp, avoid the device to receive the damage owing to external pulling leads to connector 4 after the connection finishes, simultaneously through the sponge layer that arc press block 102 lower surface set up, guarantee that casing 1 inside can not get into humid air, and then guarantee the safe operation of device, arc press block 102 upper surface fixed mounting has guide bar 105, the spout that the size equals with guide bar 105 is seted up to lifting plate 8 inner wall, through being provided with guide bar 105, make arc press block 102 keep moving along closure plate 5 outer wall direction all the time, reduce the wearing and tearing between lifting plate 8 and the slide bar 101.
In this embodiment, the closing plate 5 is clamped with the filter screen cylinder 12 by the fixing component 11 arranged on the inner wall, the filter screen cylinder 12 is internally provided with the annular placing groove capable of placing the water absorbent resin, when the air in the shell 1 is communicated with the outside by the filter screen cylinder 12 capable of placing the water absorbent resin, the moisture in the air in the outside environment can be absorbed by the water absorbent resin, the drying of the inside of the shell 1 is ensured, the air in the shell 1 can be connected with the outside, the heat dissipation effect of the device is improved, the fixing component 11 comprises the button 111, the button 111 penetrates through the first toothed bar 112, the end part of the first toothed bar 112 is fixedly connected with the button 111, the first toothed bar 112 moves along the inner wall of the closing plate 5 in the horizontal direction by pressing the button 111, the side wall of the button 111 is fixedly connected with the left end of the second reset spring 113, the right end of the second return spring 113 is fixedly connected with the outer wall of the closing plate 5, the second return spring 113 is sleeved on the outer side of the first toothed bar 112, a first gear 114 is rotatably arranged on the inner wall of the closing plate 5, the first gear 114 is meshed with the first toothed bar 112, a second gear 115 is coaxially and fixedly arranged on the first gear 114, a second toothed bar 116 is slidably connected with the inner wall of the closing plate 5, the second toothed bar 116 is meshed with the second gear 115, a limit tooth 117 is fixedly arranged at the end part of the second toothed bar 116, a limit groove with the same size as the limit tooth 117 is formed in the outer wall of the filter screen cylinder 12, the limit tooth 117 is driven by the second toothed bar 116 to move in the horizontal direction along the inner wall of the closing plate 5 by being matched with the second gear 115 by pressing a button 111 towards one side of the closing plate 5, the limit tooth 117 is separated from a limit groove formed in the outer wall of the filter screen cylinder 12, and a worker can withdraw the filter screen cylinder 12 outwards at the moment, the water-absorbent resin inside the filter screen cylinder 12 is convenient for workers to replace and clean at regular intervals so as to ensure the drying effect inside the shell 1.
Working principle: when the switching power supply suitable for the humid environment is used, through the arrangement of the first-stage buffer spring 63, when the closing plate 5 is impacted by splashes or small animals in the external environment, the connecting sliding block 62 is matched to provide a certain buffer protection effect for the closing plate 5 in the horizontal direction, so that when the closing plate 5 is subjected to a larger impact force, the connecting sliding block 62 moves to the left in the horizontal direction along the inner wall of the shell 1 to a certain distance, the outer wall on the right side of the contact sliding block 66 is contacted with the outer wall on the left side of the connecting sliding block 62, the second-stage buffer spring 67 is matched to provide a further buffer protection effect for the closing plate 5, so that the device is effectively protected from the impact caused by people or small animals in the external environment, the stable operation of the device is ensured, when the external connecting equipment is required to be connected with the connector 4, the lifting plate 8 is pushed upwards along the outer wall of the closing plate 5, the gap is exposed between the lifting plate 8 and the closing plate 5, so that the external connecting device is conveniently connected with the connector 4 by workers, after connection is finished, the lifting plate 8 is put down by workers, the clamping assembly 10 is arranged, the arc pressing block 102 clamps the electric wires, the connector 4 is prevented from being damaged due to external pulling after connection is finished, meanwhile, the inside of the shell 1 is ensured not to enter moist air through a sponge layer arranged on the lower surface of the arc pressing block 102, the safe operation of the device is ensured, the arc pressing block 102 always keeps moving along the direction of the outer wall of the closing plate 5 by the guide rod 105, the abrasion between the sliding rod 101 and the lifting plate 8 is reduced, and when the air inside the shell 1 is communicated with the outside by the filter screen cylinder 12 capable of placing water-absorbent resin, the moisture in the external environment air can be absorbed by the water-absorbing resin, when guaranteeing the inside drying of casing 1, make the inside air of casing 1 can link to each other with the external world, improve the radiating effect of device through pressing button 111 to closure plate 5 one side, cooperate second gear 115, make second rack 116 drive spacing tooth 117 along closure plate 5 inner wall in the horizontal direction upward motion, and then make spacing tooth 117 break away from the spacing groove that filter screen section of thick bamboo 12 outer wall was seted up, the filter screen section of thick bamboo 12 can outwards be taken out to the staff this moment, make things convenient for the staff regularly to change and clean the inside water-absorbing resin of filter screen section of thick bamboo 12, in order to guarantee the inside drying effect of casing 1.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Switching power supply suitable for under humid environment, including casing (1), its characterized in that: the utility model discloses a power supply device, which comprises a shell (1), a power module (3) fixedly arranged on the outer wall of the shell (1), a connector (4) fixedly arranged on the inner wall of the shell (1), a closing plate (5) slidably arranged on the side wall of the shell (1), an anti-impact component (6) arranged on the inner wall of the shell (1), a first telescopic rod (7) fixedly connected with the inner wall of the closing plate (5), a lifting plate (8) fixedly connected with the upper surface of the bottom end of the first telescopic rod (7), a first return spring (9) fixedly connected with the inner wall of the closing plate (5), the bottom end of the first reset spring (9) is fixedly connected with the upper surface of the lifting plate (8), a clamping assembly (10) is arranged in the lifting plate (8), the closing plate (5) is clamped with the filter screen cylinder (12) through a fixing assembly (11) arranged on the inner wall of the closing plate, the anti-impact assembly (6) comprises a second telescopic rod (61), the right end of the second telescopic rod (61) is fixedly connected with the left outer wall of the connecting sliding block (62), the inner wall of the shell (1) is fixedly connected with the left end of the first-stage buffer spring (63), the right end of the first-stage buffer spring (63) is fixedly connected with the left outer wall of the connecting sliding block (62), the inner wall of the shell (1) is fixedly connected with the lower surface of the fixed buffer block (64), the right outer wall of the fixed buffer block (64) is fixedly connected with the left end of the third telescopic rod (65), the right end of the third telescopic rod (65) is fixedly connected with the left outer wall of the contact sliding block (66), the right outer wall of the fixed buffer block (64) is fixedly connected with the left outer wall of the secondary buffer spring (67), the right end of the secondary buffer spring (67) is fixedly connected with the left outer wall of the contact sliding block (66), the clamping assembly (10) comprises a sliding rod (101), an arc pressing block (102) is fixedly arranged at the bottom end of the sliding rod (101), a baffle (103) penetrates through the sliding rod (101), the lower surface of the baffle (103) is fixedly connected with the top end of the clamping spring (104), the bottom end of the clamping spring (104) is fixedly connected with the inner wall of the lifting plate (8), a guide rod (105) is fixedly arranged on the upper surface of the arc pressing block (102), the fixed button assembly (11) comprises a sliding rod (101), the first tooth button (111) penetrates through the first tooth button (111) and the end of the second tooth button (111) to the first tooth button (112), the right-hand member of second reset spring (113) and closure board (5) outer wall fixed connection, first gear (114) are installed in closure board (5) inner wall rotation, coaxial fixed mounting of first gear (114) has second gear (115), closure board (5) inner wall sliding connection has second rack (116), second rack (116) tip fixed mounting has spacing tooth (117).
2. A switching power supply suitable for use in a wet environment as claimed in claim 1, wherein: the inner wall of the lifting plate (8) is provided with a chute with the same size as the guide rod (105).
3. A switching power supply suitable for use in a wet environment as claimed in claim 1, wherein: limiting grooves with the same size as the limiting teeth (117) are formed in the outer wall of the filter screen barrel (12).
4. A switching power supply suitable for use in a wet environment as claimed in claim 1, wherein: an annular placing groove capable of placing water-absorbent resin is formed in the filter screen barrel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210452294.6A CN114650686B (en) | 2022-04-27 | 2022-04-27 | Switching power supply suitable for humid environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210452294.6A CN114650686B (en) | 2022-04-27 | 2022-04-27 | Switching power supply suitable for humid environment |
Publications (2)
| Publication Number | Publication Date |
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| CN114650686A CN114650686A (en) | 2022-06-21 |
| CN114650686B true CN114650686B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN216377328U (en) * | 2021-10-19 | 2022-04-26 | 梁家栋 | Lifting device for building engineering construction |
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| WO2013131290A1 (en) * | 2012-03-08 | 2013-09-12 | 广州怡泰照明电子科技有限公司 | Lamp tube fixing device |
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| CN114650686A (en) | 2022-06-21 |
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