Dustproof and short-circuit-proof motor driver

Abstract

The utility model discloses a dustproof and short-circuit-proof motor driver comprising a housing, the outer surface of the housing is fixedly provided with a fixed heat conduction plate, the interior of the housing is provided with a circuit board, the two sides of the housing are provided with ventilation openings, the outer surface of the housing is provided with a sliding magnetic attraction mechanism, and the sliding magnetic attraction mechanism is connected with the circuit board. And external dust is blocked through the sliding magnetic suction mechanism, so that the dust cannot enter the shell, and the risk of short circuit caused by the dust is reduced. According to the dustproof and short-circuit-proof motor driver, when the ventilation cooling fan rotates, external air can be sucked into the shell and sent out from the ventilation opening, at the moment, the insertion filter screen can intercept and filter dust in the air, so that the dust cannot enter the shell, and when the insertion filter screen is full of the dust, the insertion filter screen can be directly inserted into the shell. And the inserted filter screen can be pulled out of the shell and cleaned, so that dust cannot enter the shell, the probability of short circuit is reduced, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor drivers, in particular to a dustproof and short-circuit-proof motor driver. Background Art

[0002] With the development and progress of science and technology, motors are constantly being updated and replaced, enabling motors to change speed, torque and position in order to perform high-precision control of the motors. In this case, a motor driver is an indispensable device. A motor driver is an electronic device used to control the operation of a motor. It can convert electrical energy into mechanical energy to drive the motor to operate in a predetermined manner. However, when existing motor drivers are in use and operation, a large amount of dust in the air will enter the driver, causing the circuit components in the driver to be covered, resulting in heat being unable to dissipate from the electronic components, and may cause an internal circuit short circuit, causing damage to the driver. Utility Model Content

[0003] The purpose of the present invention is to provide a dustproof and short-circuit-proof motor driver to solve the problem in the background art that dust easily enters the driver and causes damage and short circuit.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dust-proof and short-circuit-proof motor driver, comprising a shell, a fixed heat-conducting plate fixedly installed on the outer surface of the shell, and the fixed heat-conducting plate passes through the side surface of the shell, and a ventilation and cooling fan is fixedly installed inside the shell, a circuit board is provided inside the shell, and a silicone thermal pad is provided between the circuit board and the fixed heat-conducting plate, vents are provided on both sides of the shell, and cross bars are evenly provided inside the vents, and a sliding magnetic attraction mechanism is provided on the outer surface of the shell, which blocks external dust through the sliding magnetic attraction mechanism, preventing dust from entering the interior of the shell, thereby reducing the risk of short circuit caused by dust.

[0005] Preferably, the sliding magnetic attraction mechanism includes: a plug-in filter, which is designed in a door shape and passes through the outer surfaces of both sides of the shell, and a magnet is provided between the shell and the plug-in filter, and the outer surface of the plug-in filter is tightly fitted with the outer surface of the vent.

[0006] By adopting the above technical solution, the plug-in filter can be fixed to the shell by magnets. When the drive is dissipating heat, the air drawn in by the ventilation and cooling fan will be filtered by the plug-in filter, so that the dust in the air will not enter the inside of the shell, reducing the probability of short circuit of the circuit board due to dust, and preventing the heat dissipation efficiency of the circuit board from being reduced due to dust cover.

[0007] Preferably, a fixed plug-in mechanism is provided between the fixed heat conducting plate and the housing, and the circuit board can be conveniently installed and fixed by the fixed plug-in mechanism.

[0008] By adopting the above technical solution, the heat dissipation fins of the circuit board and the silicone thermal pad can be conveniently fixed, so that the front panel can be directly opened during subsequent maintenance to remove the circuit board and the heat dissipation fins for fixing.

[0009] Preferably, the fixed plug-in mechanism includes: a plug-in limit rod, the plug-in limit rod is fixedly installed on the outer surface of the fixed heat-conducting plate, the outer surface of the plug-in limit rod passes through the outer surface of the circuit board, the outer surface of the silicone thermal pad is penetrated by the plug-in limit rod, and the outer surface of the plug-in limit rod is penetrated by a heat dissipation fin, and another silicone thermal pad is arranged between the heat dissipation fin and the circuit board, the outer surface of the outer shell is fixedly installed with a front panel, and the outer surface of the front panel is in contact with the outer surface of the heat dissipation fin.

[0010] By adopting the above technical solution, the heat of the circuit board can be transferred to the heat sink fins through the silicone thermal pad, thereby improving the contact tightness between the heat sink fins and the circuit board and improving the heat conduction efficiency.

[0011] Preferably, the ventilation and heat dissipation fan is located on one side of the heat dissipation fins, and the heat dissipation fins and the vents are at the same position, and the vents on both sides of the housing are concentrically designed.

[0012] By adopting the above technical solution, the heat dissipation area is expanded through the heat dissipation fins, and the position of the heat dissipation fins and the vents is adjusted so that the vents can take away more heat when supplying air for heat dissipation, thereby improving the heat dissipation efficiency.

[0013] Preferably, a fixed base is fixedly installed on the outer surface of the circuit board, and the outer surface of the fixed base passes through the outer surface of the heat dissipation fins, a wiring strip is inserted into the interior of the fixed base, and the wiring strip passes through the outer surface of the front panel, and a sliding plug-in shell is slidably installed on the outer surface of the front panel, and the outer surface of the sliding plug-in shell does not fit the outer surface of the wiring strip.

[0014] By adopting the above technical solution, the cables can be fixed first through the terminal strip, and then the terminal strip can be inserted into the fixed base, so that the cables can be conveniently and quickly connected to the circuit board. The terminal strip can be protected by sliding the protective shell and the front panel, and the terminal strip can be effectively supported by the heat dissipation fins and the front panel.

[0015] Preferably, an elastic contact piece is fixedly installed on the outer surface of the circuit board, and the elastic contact piece passes through the front panel, a protective shell is fixedly installed on the outer surface of the front panel, and the outer surface of one end of the protective shell is in contact with the outer surface of the heat sink fin, a plug-in cover is inserted into the interior of the protective shell, and a fuse is inserted into the interior of the plug-in cover, and the fuse is plugged into the elastic contact piece, a through hole is opened on the outer surface of the protective shell, and the outer surface of the protective shell is in contact with the outer surface of the fuse.

[0016] By adopting the above technical solution, the circuit board can be protected by installing a fuse, reducing the probability of damage to parts inside the circuit board during a short circuit. The fuse can be easily replaced by plugging the cover and the fuse, and the protective shell can prevent the elastic contact piece, the fuse and the heat sink from contacting and causing a short circuit.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the dust-proof and short-circuit-proof motor driver:

[0018] 1. When the drive is running, the ventilation and cooling fan will draw external air into the interior of the housing and send it out through the vents. At this time, the plug-in filter will intercept and filter the dust in the air to prevent the dust from entering the interior of the housing. When the plug-in filter is full of dust, the plug-in filter can be pulled out of the housing and cleaned to prevent the dust from entering the interior of the housing, reducing the probability of short circuit and improving the heat dissipation efficiency.

[0019] 2. When assembling the driver, you only need to insert the silicone thermal pad into the plug-in limit rod, then insert the circuit board into the plug-in limit rod, and then place another silicone thermal pad and insert it into the heat sink fins. After the front panel is fixed to the side surface of the shell, the silicone thermal pad, circuit board and heat sink fins can be clamped together, making it easy to install and fix the silicone thermal pad, circuit board and heat sink fins. In the event of subsequent damage, the circuit board can be removed for repair and replacement.

[0020] 3. The fuse can protect the driver's circuit board so that when a short circuit occurs on the circuit board, the fuse will immediately melt to provide protection. When replacing the fuse, simply remove the sliding plug-in shell from the front panel, then pull the plug-in cover out of the protective shell, and then pull the fuse out of the plug-in cover to replace it. Then, insert the fuse back into the protective shell so that the fuse can contact and engage with the elastic contact piece, making it easy to replace the fuse and protect the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the housing and the vent of the utility model;

[0022] Figure 2This is a schematic diagram of the three-dimensional structure of the fixed heat conducting plate and the plug-in filter screen of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the housing and heat dissipation fins of the utility model;

[0024] Figure 4 This is a schematic diagram of the sectional three-dimensional structure of the front panel and the sliding plug-in shell of the utility model;

[0025] Figure 5 This is a schematic diagram of the exploded three-dimensional structure of the housing and circuit board of the utility model;

[0026] Figure 6 This is a schematic diagram of the sectional three-dimensional structure of the front panel and protective shell of the present invention.

[0027] In the figure: 1. Outer shell; 2. Plug-in limit rod; 3. Ventilation and cooling fan; 4. Vent; 5. Silicone thermal pad; 6. Circuit board; 7. Heat sink fins; 8. Front panel; 9. Sliding plug-in shell; 10. Fixed base; 11. Wiring strip; 12. Elastic contact piece; 13. Plug-in cover; 14. Fuse; 15. Fixed heat conduction plate; 16. Protective shell; 17. Plug-in filter. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-6 The utility model provides a technical solution: a dust-proof and short-circuit-proof motor driver, comprising a shell 1, a fixed heat-conducting plate 15 is fixedly installed on the outer surface of the shell 1, and the fixed heat-conducting plate 15 passes through the side surface of the shell 1, and a ventilation and cooling fan 3 is fixedly installed inside the shell 1, a circuit board 6 is arranged inside the shell 1, and a silicone thermal pad 5 is arranged between the circuit board 6 and the fixed heat-conducting plate 15, vents 4 are arranged on both sides of the shell 1, and cross bars are evenly arranged inside the vents 4, and a sliding magnetic attraction mechanism is provided on the outer surface of the shell 1, which blocks external dust through the sliding magnetic attraction mechanism, so that dust cannot enter the interior of the shell 1, thereby reducing the risk of short circuit caused by dust.

[0030] The cross bars arranged on both sides of the vent 4 can effectively block external objects and prevent them from piercing the plug-in filter 17 and causing the inability to filter dust. The heat generated by the circuit board 6 can be conducted to the outer surface of the installation object through the fixed heat conducting plate 15, and the silicone thermal pad 5 can make the circuit board 6 fit more closely with the fixed heat conducting plate 15 and the heat dissipation fins 7, so as to improve the heat dissipation efficiency of the circuit board 6.

[0031] The sliding magnetic attraction mechanism includes: a plug-in filter 17, which is designed in a door shape and passes through the outer surfaces of both sides of the shell 1, and a magnet is provided between the shell 1 and the plug-in filter 17, and the outer surface of the plug-in filter 17 is tightly fitted with the outer surface of the vent 4.

[0032] The door-shaped design of the plug-in filter 17 can block the vents 4 on both sides of the shell 1 at the same time, and the magnet provided between the shell 1 and the plug-in filter 17 can effectively fix the plug-in filter 17 on the outer surface of the shell 1, so that when the ventilation and cooling fan 3 draws in air for heat dissipation, dust can be filtered by the plug-in filter 17. After long-term use, the plug-in filter 17 can also be pulled out of the shell 1 for cleaning, thereby reducing the risk of dust entering the shell 1 and causing a short circuit on the circuit board 6, and also reducing the accumulation of dust on the circuit board 6 and causing reduced heat dissipation.

[0033] A fixed plug-in mechanism is provided between the fixed heat conducting plate 15 and the outer shell 1, and the circuit board 6 is conveniently installed and fixed through the fixed plug-in mechanism. The fixed plug-in mechanism includes: a plug-in limit rod 2, the plug-in limit rod 2 is fixedly installed on the outer surface of the fixed heat conducting plate 15, the outer surface of the plug-in limit rod 2 passes through the outer surface of the circuit board 6, the outer surface of the silicone thermal pad 5 is penetrated by the plug-in limit rod 2, and the outer surface of the plug-in limit rod 2 is penetrated by the heat dissipation fin 7, and another silicone thermal pad 5 is provided between the heat dissipation fin 7 and the circuit board 6, the outer surface of the outer shell 1 is fixedly installed with a front panel 8, and the outer surface of the front panel 8 is in contact with the outer surface of the heat dissipation fin 7.

[0034] During assembly, the silicone thermal pad 5 can be directly passed through the plug-in limit rod 2, and then the circuit board 6 can be inserted into the outer surface of the plug-in limit rod 2, and another silicone thermal pad 5 and the heat dissipation fins 7 can be inserted into the plug-in limit rod 2, and then the front panel 8 can be fixedly installed on the side surface of the shell 1, so that after the front panel 8 is fixed, it can clamp the silicone thermal pad 5, the circuit board 6 and the heat dissipation fins 7, so that the circuit board 6 and the heat dissipation fins 7 can be easily installed and disassembled, which is convenient for subsequent assembly.

[0035] The ventilation and heat dissipation fan 3 is located on one side of the heat dissipation fins 7 , and the heat dissipation fins 7 are located at the same position as the vents 4 . The vents 4 on both sides of the housing 1 are concentrically designed.

[0036] The heat dissipation area of ​​the circuit board 6 can be expanded by the heat dissipation fins 7, and the design of the ventilation cooling fan 3, the vents 4 and the positions of the heat dissipation fins 7 allows external wind to pass through and be discharged from the vents 4, thereby improving the heat dissipation efficiency of the circuit board 6.

[0037] A fixed base 10 is fixedly installed on the outer surface of the circuit board 6, and the outer surface of the fixed base 10 passes through the outer surface of the heat dissipation fins 7. A terminal strip 11 is inserted into the interior of the fixed base 10, and the terminal strip 11 passes through the outer surface of the front panel 8. A sliding plug-in shell 9 is slidably installed on the outer surface of the front panel 8, and the outer surface of the sliding plug-in shell 9 does not fit into the outer surface of the terminal strip 11.

[0038] After the installation is completed, the cables can be installed one by one on the outer surface of the terminal strip 11, and then the terminal strip 11 can be inserted into the fixed base 10, so that the cables can be easily connected and the cables can be easily connected to the circuit board 6, making wiring more convenient, and the terminal strip 11 and the cables can be protected by the sliding plug shell 9.

[0039] An elastic contact piece 12 is fixedly mounted on the outer surface of the circuit board 6, and the elastic contact piece 12 passes through the front panel 8. A protective shell 16 is fixedly mounted on the outer surface of the front panel 8, and the outer surface of one end of the protective shell 16 is in contact with the outer surface of the heat sink 7. A plug-in cover 13 is inserted into the interior of the protective shell 16, and a fuse 14 is inserted into the interior of the plug-in cover 13, and the fuse 14 is plugged into the elastic contact piece 12. A through hole is opened on the outer surface of the protective shell 16, and the outer surface of the protective shell 16 is in contact with the outer surface of the fuse 14.

[0040] When a short circuit occurs in the driver, the fuse 14 will melt to protect the circuit board 6. After the fuse 14 melts, the plug cover 13 can be pulled out of the protective shell 16 to separate the fuse 14 from the elastic contact piece 12. The fuse 14 can then be taken out of the plug cover 13 and a new fuse 14 can be inserted. The plug cover 13 can then be inserted back into the protective shell 16. The protective shell 16 can also prevent the elastic contact piece 12 and the fuse 14 from contacting metal objects and causing a short circuit, thereby protecting the circuit board 6 and allowing the fuse 14 to be easily replaced.

[0041] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof and short-circuit-proof motor driver, comprising a housing (1), a fixed heat-conducting plate (15) fixedly mounted on the outer surface of the housing (1), and the fixed heat-conducting plate (15) passing through the side surface of the housing (1), and a ventilation and heat dissipation fan (3) fixedly mounted inside the housing (1), a circuit board (6) disposed inside the housing (1), and a silicone heat-conducting pad (5) disposed between the circuit board (6) and the fixed heat-conducting plate (15), vents (4) disposed on both sides of the housing (1), and cross bars uniformly disposed inside the vents (4), characterized in that: The outer surface of the housing (1) is provided with a sliding magnetic attraction mechanism, which blocks external dust and prevents dust from entering the interior of the housing (1), thereby reducing the risk of short circuit caused by dust.

2. The dust-proof and short-circuit-proof motor driver according to claim 1, characterized in that: The sliding magnetic attraction mechanism comprises: a plug-in filter (17), the plug-in filter (17) is designed in a door shape, and the plug-in filter (17) passes through the outer surfaces of both sides of the shell (1), and a magnet is provided between the shell (1) and the plug-in filter (17), and the outer surface of the plug-in filter (17) is tightly fitted with the outer surface of the vent (4).

3. The dust-proof and short-circuit-proof motor driver according to claim 1, characterized in that: A fixed plug-in mechanism is provided between the fixed heat-conducting plate (15) and the housing (1), and the circuit board (6) is conveniently installed and fixed via the fixed plug-in mechanism.

4. The dustproof and short-circuit-proof motor driver according to claim 3, characterized in that: The fixed plug-in mechanism comprises: a plug-in limit rod (2), the plug-in limit rod (2) is fixedly mounted on the outer surface of a fixed heat-conducting plate (15), the outer surface of the plug-in limit rod (2) passes through the outer surface of a circuit board (6), the outer surface of the silicone thermal pad (5) is passed through by the plug-in limit rod (2), and a heat dissipation fin (7) is installed through the outer surface of the plug-in limit rod (2), and another silicone thermal pad (5) is provided between the heat dissipation fin (7) and the circuit board (6), and a front panel (8) is fixedly mounted on the outer surface of the housing (1), and the outer surface of the front panel (8) is in contact with the outer surface of the heat dissipation fin (7).

5. The dust-proof and short-circuit-proof motor driver according to claim 1, characterized in that: The ventilation and heat dissipation fan (3) is located on one side of the heat dissipation fins (7), and the heat dissipation fins (7) and the ventilation openings (4) are located at the same position. The ventilation openings (4) on both sides of the housing (1) are concentrically designed.

6. The dustproof and short-circuit-proof motor driver according to claim 1, characterized in that: A fixed base (10) is fixedly mounted on the outer surface of the circuit board (6), and the outer surface of the fixed base (10) passes through the outer surface of the heat dissipation fin (7); a wiring strip (11) is inserted into the interior of the fixed base (10), and the wiring strip (11) passes through the outer surface of the front panel (8); a sliding plug-in shell (9) is slidably mounted on the outer surface of the front panel (8), and the outer surface of the sliding plug-in shell (9) does not fit the outer surface of the wiring strip (11).

7. The dust-proof and short-circuit-proof motor driver according to claim 1, characterized in that: An elastic contact piece (12) is fixedly mounted on the outer surface of the circuit board (6), and the elastic contact piece (12) passes through the front panel (8); a protective shell (16) is fixedly mounted on the outer surface of the front panel (8), and the outer surface of one end of the protective shell (16) is in contact with the outer surface of the heat dissipation fin (7); a plug-in cover (13) is inserted into the interior of the protective shell (16), and a fuse (14) is inserted into the interior of the plug-in cover (13), and the fuse (14) is in contact with the elastic contact piece (12); a through hole is opened on the outer surface of the protective shell (16), and the outer surface of the protective shell (16) is in contact with the outer surface of the fuse (14).

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