CN115714519A - Power adapter for direct current electric tool - Google Patents
Power adapter for direct current electric tool Download PDFInfo
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- CN115714519A CN115714519A CN202211449993.1A CN202211449993A CN115714519A CN 115714519 A CN115714519 A CN 115714519A CN 202211449993 A CN202211449993 A CN 202211449993A CN 115714519 A CN115714519 A CN 115714519A
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Abstract
The invention discloses a power adapter for a direct current electric tool, which comprises a shell and a power conversion circuit board fixed in the shell, wherein a power plug wire electrically connected with the power conversion circuit board is arranged on the shell, the shell comprises a bottom shell and a surface shell which are fixed through a screw rod, a heat dissipation strip-shaped groove is fixed on the side wall of the bottom shell, at least one heat dissipation fan is fixed inside the side wall of the bottom shell, the power conversion circuit board comprises a power input terminal, a rectification filter circuit, a high-power direct current conversion circuit and a 20V voltage output terminal, and the power adapter is further provided with a switching power circuit connected with the rectification filter circuit and an optocoupler driving circuit connected with the control end of the switching power circuit. The direct current electric tool power supply device is reasonable in structural arrangement, meets the power supply requirement of the direct current electric tool through the conversion of the power supply conversion circuit board, is beneficial to improving the continuity of power supply, is provided with the cooling fan, is beneficial to improving the whole cooling performance, realizes over-temperature protection, improves the whole service life, and is strong in applicability and good in practicability.
Description
Technical Field
The invention belongs to the technical field of direct current electric tools, and particularly relates to a power adapter for a direct current electric tool.
Background
The electric tool adapter in the market at present usually adopts and is equipped with the battery package and supplies power for electric tool through the battery package, the battery package sets up a interface, its direct electrical property connects in the interface of the machine tool, general every electric tool all disposes the battery package of a model correspondingly, can not be general, chinese patent CN202221399029.8 discloses a battery package interface conversion adapter, it is mainly to be provided with the installing port that is used for installing the battery package in the shell, be provided with the multiple interface conversion structure that is used for different battery package to connect in the installing port, it passes through multiple interface conversion structure, can convert as required, thus can satisfy the demand of different interfaces, help improving its application scope, but its built-in battery package power supply of above-mentioned structure, its battery package capacity can only deal with the work in relative short time, the tool will not normally work when the battery is exhausted, influence normal work, its holistic heat dispersion is comparatively limited at the same time, can influence the life of overall structure, suitability and practicality are restricted.
Disclosure of Invention
The invention aims to provide a power adapter for a direct-current electric tool, which is reasonable in structural arrangement and beneficial to improving power supply continuity.
The technical scheme for achieving the purpose of the invention is that the power adapter for the direct current electric tool comprises a shell and a power conversion circuit board fixed in the shell, wherein a power plug wire electrically connected with the power conversion circuit board is arranged on the shell, the shell comprises a bottom shell and a face shell which are fixed through a screw rod, a radiating strip-shaped groove is fixed on the side wall of the bottom shell, at least one radiating fan is fixed inside the side wall of the bottom shell, the radiating fan is electrically connected with the control end of the power conversion circuit board, the power conversion circuit board comprises a power input terminal, a rectifying filter circuit electrically connected with the power input terminal, a high-power direct current conversion circuit connected with the output end of the rectifying filter circuit and a 20V voltage output terminal connected with the output end of the high-power direct current conversion circuit, and the power adapter is further provided with a switching power circuit connected with the rectifying filter circuit and an optical coupling driving circuit connected with the control end of the switching power circuit, the optical coupling driving circuit is connected with the 20V voltage output terminal, and the switching power circuit is connected with the control end of the high-power direct current conversion circuit.
More preferably: the top of the face shell is fixedly provided with a plurality of conductive plug ports, plug port contact pieces connected with 20V voltage output terminals on the power supply conversion circuit board are fixed inside the face shell, the number of the plug terminal contact pieces is the same as that of the conductive plug ports, and the plug port contact pieces are located in the conductive plug ports.
More preferably: two radiating fins are fixed on the edge of the top surface of the power supply conversion circuit board, and the radiating fan is attached to the end surfaces of the radiating fins.
More preferably: the radiating fans are two and two radiating fans are arranged in the side wall of the bottom shell side by side, and the two radiating fans are respectively attached to the end face of one radiating fin.
More preferably: the model of a main chip of the switching power supply circuit is NCP1252.
More preferably: an access hole is formed in the face shell, and a protective shell cover is buckled at the access hole.
More preferably: the bottom shell and the face shell are both insulating plastic structure shells.
More preferably: the bottom surface edge of the face shell is integrally formed with a limiting abutting pressing threaded hole column, the face shell and the bottom shell are combined, the limiting abutting pressing threaded hole column abuts against the bottom wall of the bottom shell, and the screw is fixed on the limiting abutting pressing threaded hole column in a threaded mode.
More preferably: the side wall of the bottom shell is provided with a plurality of clamping grooves, the edge of the face shell is integrally formed with clamping blocks, the number of the clamping blocks is the same as that of the clamping grooves, and the bottom shell is connected with the face shell and is limited primarily with the clamping grooves through the clamping blocks.
The invention has the positive effects that: the structure of the direct current electric tool is reasonable in arrangement, the power supply conversion circuit board is arranged in the shell to replace a battery pack in the prior art, the battery pack is electrically connected through the power supply plug wire, the power supply requirement of the direct current electric tool is met through the conversion of the power supply conversion circuit board, the improvement of the power supply continuity is facilitated, meanwhile, the radiating fan is arranged, the integral radiating performance is favorably improved, the over-temperature protection is realized, the integral service life is favorably prolonged, the use is stable and reliable, the applicability is strong, and the practicability is good.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the split structure of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
fig. 4 is a schematic diagram of a specific circuit structure of the present invention.
Reference numerals: the power conversion circuit board comprises a power conversion circuit board 1, a shell 2, a bottom shell 21, a face shell 22, a limiting abutting threaded hole column 23, a clamping groove 24, a power plug wire 3, a heat dissipation strip-shaped groove 4, a heat dissipation fan 5, a power input terminal 6, a rectification filter circuit 7, a high-power direct current conversion circuit 8, a 20V voltage output terminal 9, a switching power circuit 10, an optical coupler driving circuit 11, a conductive inserting port 12, an inserting port contact piece 13, a heat dissipation fin 14, an access opening 15 and a protective shell cover 16.
Detailed Description
(example 1)
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, a power adapter for a dc power tool includes a housing 2 and a power conversion circuit board 1 fixed in the housing, wherein the housing is provided with a power plug 3 electrically connected to the power conversion circuit board.
The housing 2 includes a bottom case 21 and a face case 22 fixed by screws, and in this embodiment, the bottom case and the face case are both insulating plastic structural housings. In addition, in order to install the screw, a limiting abutting pressing screw hole column 23 is integrally formed at the edge of the bottom surface of the face shell, the face shell and the bottom shell are combined, the limiting abutting pressing screw hole column abuts against the bottom wall of the bottom shell, and the screw is fixed on the limiting abutting pressing screw hole column in a threaded mode. And in the practical application in-process, be provided with a plurality of draw-in groove 24 on the lateral wall of drain pan, the border integrated into one piece of face-piece has the buckle piece that quantity and draw-in groove quantity are the same, the drain pan with the face-piece is connected and is passed through buckle piece and draw-in groove are preliminary spacing. When the fixing device is used, the bottom shell and the surface shell are buckled and limited, and then the fixing device is fixed through the screw rod, so that the mounting position precision is improved, and the mounting reliability is guaranteed.
The side wall of the bottom shell is fixed with a heat dissipation strip-shaped groove 4, at least one heat dissipation fan 5 is fixed inside the side wall of the bottom shell, and the heat dissipation fan is electrically connected with the control end of the power conversion circuit board.
The power conversion circuit board 1 comprises a power input terminal 6, a rectification filter circuit 7 electrically connected with the power input terminal, a high-power direct-current conversion circuit 8 connected with the output end of the rectification filter circuit, a 20V voltage output terminal 9 connected with the output end of the high-power direct-current conversion circuit, a switch power circuit 10 connected with the rectification filter circuit and an optocoupler drive circuit 11 connected with the control end of the switch power circuit, wherein in the embodiment, the model of a main chip of the switch power circuit is NCP1252. The optical coupler driving circuit is connected with the 20V voltage output terminal, and the switching power supply circuit is connected with the control end of the high-power direct current conversion circuit. The power input terminal is electrically connected with the power plug wire, 220-240V voltage can be input, and the output voltage is 20V power supply of 2A after passing through the high-power direct current conversion circuit, so that the normal power supply requirement of the direct current electric tool is met, and the continuity and the stability of use are improved.
The top of the face shell is fixed with a plurality of conductive plug ports 12, plug port contact pieces 13 connected with 20V voltage output terminals on the power supply conversion circuit board are fixed inside the face shell, the number of the plug terminal contact pieces is the same as that of the conductive plug ports, and the plug port contact pieces are located in the conductive plug ports. In the embodiment, the stability and the reliability of electric connection are improved, and the plugging effectiveness is also improved.
In practical application, in order to improve the heat dissipation performance of the whole power conversion circuit board, two heat dissipation fins 14 are fixed at the edge of the top surface of the power conversion circuit board, and the heat dissipation fan is attached to the end surfaces of the heat dissipation fins. The two heat radiation fans are respectively attached to the end surface of one heat radiation fin. In this embodiment, the heat dissipation fins are aluminum structures, which can improve heat conduction and heat dissipation performance.
An access opening 15 is formed in the face shell, and a protective shell cover 16 is buckled at the access opening. Is convenient for maintenance and repair operation.
The structure of the invention is reasonable, the power conversion circuit board is arranged in the shell to replace the battery pack in the prior art, the battery pack is electrically connected through the power plug wire, the power supply requirement of the direct current electric tool is met through the conversion of the power conversion circuit board, the improvement of the continuity of power supply is facilitated, meanwhile, the heat dissipation fan is arranged, the heat dissipation performance of the whole body is facilitated, the over-temperature protection is realized, the service life of the whole body is facilitated to be prolonged, the use is stable and reliable, the applicability is strong, and the practicability is good.
The standard parts used in the present embodiment can be purchased directly from the market, and the non-standard structural parts described in the specification can also be obtained directly by processing according to the common general knowledge of the prior art without any doubt, and the connection mode of the parts adopts the conventional means matured in the prior art, and the machines, parts and equipment adopt the conventional models in the prior art, so that the detailed description is not given here.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.
Claims (9)
1. The utility model provides a power adapter for direct current electric tool, includes the casing, fixes power conversion circuit board in the casing, be provided with on the casing with the power plug wire that power conversion circuit board electricity is connected, its characterized in that: the shell comprises a bottom shell and a face shell which are fixed through a screw rod, a heat dissipation strip-shaped groove is fixed on the side wall of the bottom shell, at least one heat dissipation fan is fixed inside the side wall of the bottom shell, the heat dissipation fan is electrically connected with the control end of the power conversion circuit board, the power conversion circuit board comprises a power input terminal, a rectification filter circuit electrically connected with the power input terminal, a high-power direct-current conversion circuit connected with the output end of the rectification filter circuit, a 20V voltage output terminal connected with the output end of the high-power direct-current conversion circuit, a switch power circuit connected with the rectification filter circuit and an optocoupler drive circuit connected with the control end of the switch power circuit, the optocoupler drive circuit is connected with the 20V voltage output terminal, and the switch power circuit is connected with the control end of the high-power direct-current conversion circuit.
2. The power adapter for dc power tools of claim 1, wherein: the top of the face shell is fixedly provided with a plurality of conductive plug ports, plug port contact pieces connected with 20V voltage output terminals on the power supply conversion circuit board are fixed inside the face shell, the number of the plug terminal contact pieces is the same as that of the conductive plug ports, and the plug port contact pieces are located in the conductive plug ports.
3. The power adapter for dc power tools of claim 2, wherein: two radiating fins are fixed on the edge of the top surface of the power supply conversion circuit board, and the radiating fan is attached to the end surfaces of the radiating fins.
4. The power adapter for dc power tools of claim 3, wherein: the radiating fans are two and two radiating fans are arranged in the side wall of the bottom shell side by side, and the two radiating fans are respectively attached to the end face of one radiating fin.
5. The power adapter for a dc power tool of claim 4, wherein: the model of a main chip of the switching power supply circuit is NCP1252.
6. The power adapter for a dc power tool of claim 5, wherein: an access hole is formed in the face shell, and a protective shell cover is buckled at the access hole.
7. The power adapter for a dc power tool of claim 6, wherein: the bottom shell and the face shell are both insulating plastic structure shells.
8. The power adapter for a dc power tool of claim 7, wherein: the bottom surface edge of the face shell is integrally formed with a limiting abutting pressing threaded hole column, the face shell and the bottom shell are combined, the limiting abutting pressing threaded hole column abuts against the bottom wall of the bottom shell, and the screw is fixed on the limiting abutting pressing threaded hole column in a threaded mode.
9. The power adapter for a dc power tool of claim 1, wherein: the improved multifunctional shell is characterized in that a plurality of clamping grooves are formed in the side wall of the bottom shell, clamping blocks the quantity of which is the same as that of the clamping grooves are integrally formed in the edge of the face shell, and the bottom shell is connected with the face shell and is limited preliminarily by the clamping blocks and the clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211449993.1A CN115714519A (en) | 2022-11-19 | 2022-11-19 | Power adapter for direct current electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211449993.1A CN115714519A (en) | 2022-11-19 | 2022-11-19 | Power adapter for direct current electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115714519A true CN115714519A (en) | 2023-02-24 |
Family
ID=85233814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211449993.1A Pending CN115714519A (en) | 2022-11-19 | 2022-11-19 | Power adapter for direct current electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115714519A (en) |
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2022
- 2022-11-19 CN CN202211449993.1A patent/CN115714519A/en active Pending
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