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CN206878648U - A kind of equipotential permanent magnet direct current motor of both sides end cap - Google Patents

A kind of equipotential permanent magnet direct current motor of both sides end cap Download PDF

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Publication number
CN206878648U
CN206878648U CN201720817370.3U CN201720817370U CN206878648U CN 206878648 U CN206878648 U CN 206878648U CN 201720817370 U CN201720817370 U CN 201720817370U CN 206878648 U CN206878648 U CN 206878648U
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CN
China
Prior art keywords
end cap
metal
load
plain conductor
equipotential
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.)
Active
Application number
CN201720817370.3U
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Chinese (zh)
Inventor
印光宇
侯卫
徐兆明
吴胜章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU SHANGQI GROUP CO Ltd
Original Assignee
JIANGSU SHANGQI GROUP CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU SHANGQI GROUP CO Ltd filed Critical JIANGSU SHANGQI GROUP CO Ltd
Priority to CN201720817370.3U priority Critical patent/CN206878648U/en
Application granted granted Critical
Publication of CN206878648U publication Critical patent/CN206878648U/en
Priority to PCT/CN2018/086496 priority patent/WO2019007148A1/en
Priority to JP2019537792A priority patent/JP6633260B1/en
Priority to MYPI2019003007A priority patent/MY201549A/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The utility model discloses a kind of equipotential permanent magnet direct current motor of both sides end cap, including stator, p-m rotor, plastic-sealed body, unsupported side end cap, load-side end cap, plain conductor, metal nuts and metal screws;Load-side end cap includes end face covering part and edge bend;Plain conductor is located between stator and plastic-sealed body, and one end of plain conductor is mutually welded with unsupported side end cap, and the other end of plain conductor is connected with metal nuts;Metal nuts include horizontal end and perpendicular end, and metal nuts are fixed on the inside of load-side end cap by metal screws;Perpendicular end is in contact with the inner surface of end face covering part, and horizontal end is in contact with the inner surface of edge bend.Both sides end cap is connected by the utility model by plain conductor, and plain conductor is built in plastic-sealed body, compact-sized attractive in appearance, and security performance is high.Meanwhile plain conductor electrically connects firmly with both sides end cap, bearing electric corrosion prevention performance is good.

Description

A kind of equipotential permanent magnet direct current motor of both sides end cap
Technical field
A kind of motor is the utility model is related to, particularly a kind of equipotential permanent magnet direct current motor of both sides end cap.
Background technology
Plastic packaging permanent-magnet brushless DC electric machine is the application product that household appliance technical field has a large capacity and a wide range, motor be in complete machine very One of crucial part.
Plastic-sealing brushless DC motor at present, it is the PWM pulse width modulation modes by 16-22KHz frequencies, to motor operation Rotating speed and moment of torsion are controlled.When PWM pulse width modulation controlled operation of the motor in high frequency 16-22KHz, end cap in motor, Induced current can be produced between stator core, bearing foreign steamer, bearing ball, bearing lubrication groove, rotating shaft, the induced current causes bearing Interior grease electric discharge, causes the ball road on bearing internal external wheel and ball that galvano-cautery occurs, so that bearing produces bearing and made an uproar Sound, influence the life-span of motor.
At present, the anti-electric arbor of the direct current generator of prior art, mainly there are following two methods.
Method one:By way of end cap is connected by contact pin with stator core, to reduce motor equivalent capacitance value, reduce Bearing voltage, to reach the purpose for preventing bearing galvanic corrosion, such as the Chinese utility model patent of Application No. 201520408633.6 Application.However, above-mentioned anti-electric arbor, it is impossible to make the capacitance of two side bearings be reduced to zero, it is impossible to entirely prevent bearing electric corrosion prevention.
Method two:Former and later two end caps are connected with conductive tape or conduction liquid, make the capacitance between end cap and between bearing It is equal.However, the conductive tape or conduction liquid in this method easily fail, so as to lose the purpose of bearing electric corrosion prevention.
Utility model content
The technical problems to be solved in the utility model is to be directed to above-mentioned the deficiencies in the prior art, and provides a kind of both sides end cap Equipotential permanent magnet direct current motor, the equipotential permanent magnet direct current motor of both sides end cap is by plain conductor by both sides end cap It is connected, and plain conductor is built in plastic-sealed body, compact-sized attractive in appearance, security performance is high.Meanwhile plain conductor and two side ends Lid electrical connection is firm, and bearing electric corrosion prevention performance is good.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of equipotential permanent magnet direct current motor of both sides end cap, including stator, p-m rotor, plastic-sealed body, unsupported side End cap, load-side end cap, plain conductor, metal nuts and metal screws.
Stator coaxial package is in the periphery of p-m rotor, and plastic-sealed body coaxial package is in the periphery of stator.
P-m rotor includes rotating shaft, and unsupported side end cap and load-side end cap are set in the rotating shaft positioned at stator both sides On.
The end face covering part that load-side end cap includes being sleeved in rotating shaft and the edge for being arranged on end face covering part surrounding are curved Folding part.
Plain conductor is arranged between stator and plastic-sealed body, and one end of plain conductor is mutually welded with unsupported side end cap, gold The other end of category wire is connected with metal nuts.
Metal nuts include horizontal end and perpendicular end, wherein, horizontal end is mutually welded with plain conductor, and screwed hole is provided with perpendicular end.
Metal screws sequentially pass through the stator faces of load-side end cap, the screwed hole on perpendicular end and load-side, by metal spiral shell Mother is fixed on the inner side of load-side end cap;After metal nuts position is fixed, the perpendicular ends of metal nuts is interior with end face covering part Surface is in contact, and the horizontal end of metal nuts is in contact with the inner surface of edge bend.
P-m rotor also includes rotor core and magnet steel;Rotor core includes the interior iron core being sleeved in rotating shaft and is set in The outer iron core of interior its outer diameter, magnet steel are uniformly nested in the periphery of outer iron core;Connect between interior iron core and outer iron core filled with insulation Connect layer.
Magnet steel is molded to be formed and is structure as a whole by injection-moulded plastic with outer iron core.
Metal nuts are nested in the stator faces of load-side, and the perpendicular end outer surface of metal nuts and the stator of load-side End face is flush.
The horizontal end of metal nuts includes fixed part, metal spring and sheet metal, and it is curved with edge that sheet metal is arranged on fixed part Between folding part, sheet metal is connected by metal spring with fixed part;Fixed part is wholely set with perpendicular end;When metal nuts position After fixation, sheet metal is pressed into contact with the inner surface in edge bend under the effect of metal spring elastic force.
Metal screws are jam nut.
Metal nuts are L-shaped or U-shaped.
After the utility model uses said structure, have the advantages that:
1. plain conductor is arranged on the medial surface of plastic-sealed body, namely is built in permanent magnet direct current motor, and plain conductor one End is mutually welded with unsupported side end cap, and the plain conductor other end is connected by metal nuts with load-side end cap.Therefore, metal Unsupported side end cap is connected by wire with load-side end cap, makes the potential difference between unsupported side end cap and load-side end cap be Zero, so as to prevent bearing galvano-cautery.In addition, compact-sized attractive in appearance, security performance is high.
2. the horizontal end of above-mentioned metal nuts is mutually welded with plain conductor, the perpendicular ends of metal nuts by metal screws realize with Load-side end cap is fixedly connected with stator faces.Metal nuts realize load-side end cap and plain conductor by three kinds of modes Electrical connection properties;It is respectively:Horizontal end and edge bend, perpendicular end and end face covering part, metal screws and the screwed hole on perpendicular end. By the electric connection of these three modes, loose contact caused by loosened screw or vibration etc. can be prevented, so that plain conductor Electrically connected with both sides end cap firmly, bearing electric corrosion prevention performance is good.
3. the setting of above-mentioned interior iron core, outer iron core and insulation connecting layer, energy cut-off current loop, electric current can be prevented by turning Axle flows to bearing, so as to prevent the galvanic corrosion of bearing.
4. the set-up mode at above-mentioned horizontal end, sheet metal can be pressed into contact with bending at edge under the effect of metal spring elastic force The inner surface in portion, is further ensured that the electrical connection properties of plain conductor and both sides end cap, and bearing electric corrosion prevention performance is good.
Brief description of the drawings
Fig. 1 shows a kind of structural representation of the equipotential permanent magnet direct current motor of both sides end cap of the utility model.
Fig. 2 shows the connection relationship diagram of plain conductor and unsupported side end cap and load-side end cap.
Fig. 3 shows the structural representation of rotor core and magnet steel.
Fig. 4 shows that the another of horizontal end implements illustration in metal nuts.
Wherein have:1. unsupported side end cap;2. unsupported side bearing;3. plain conductor;4. stator;5. plastic-sealed body;6. gold medal Belong to nut;61. horizontal end;611. fixed part;612. metal spring;613. sheet metal;62. perpendicular end;621. screwed hole;7. metal spiral shell Silk;8. load-side end cap;81. end face covering part;82. edge bend;9. rotating shaft;10. load side bearing;11. outer iron core; Iron core in 12.;13. magnet steel;14. insulation connecting layer.
Embodiment
The utility model is described in further detail with specific better embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of equipotential permanent magnet direct current motor of both sides end cap, including stator 4, p-m rotor, Plastic-sealed body 5, unsupported side end cap 1, unsupported side bearing 2, load-side end cap 8, load side bearing 10, plain conductor 3, metal spiral shell Mother 6 and metal screws 7.
Stator coaxial package is in the periphery of p-m rotor, and plastic-sealed body coaxial package is in the periphery of stator.
P-m rotor includes rotating shaft 9, rotor core and magnet steel 13.
Rotor core includes the interior iron core 12 being sleeved in rotating shaft and the outer iron core 11 for being set in interior its outer diameter.
Gap is preferably provided between interior iron core and outer iron core, insulation connecting layer 14 is filled with gap.Insulation connecting layer Preferably injection molded elastomer.The setting of insulation connecting layer, energy cut-off current loop, can prevent electric current from flowing to bearing by rotating shaft, from And prevent the galvanic corrosion of bearing.In addition, noise and vibration can also be reduced.
Magnet steel is uniformly nested in the periphery of outer iron core, and magnet steel preferably is molded to be formed and is integrated by injection-moulded plastic with outer iron core Structure.
Unsupported side end cap and unsupported side bearing are sleeved in the rotating shaft of unsupported side, load-side end cap and load Side bearing is sleeved in the rotating shaft of load-side.
As shown in Fig. 2 load-side end cap includes the end face covering part 81 being sleeved in rotating shaft and is arranged on end face covering part The edge bend 82 of surrounding.
Plain conductor is arranged between stator and plastic-sealed body, and plain conductor is preferably temperature resistant metallic wire.
One end of plain conductor is mutually welded with unsupported side end cap, preferably butt-joint.The other end and metal of plain conductor Nut is connected.
Metal nuts are preferably L-shaped or U-shaped, and selection is L-type in the present invention.
Metal nuts include horizontal end 61 and perpendicular end 62, wherein, horizontal end is mutually welded with plain conductor, and screw thread is provided with perpendicular end Hole 621.
Metal screws sequentially pass through the stator faces of load-side end cap, the screwed hole on perpendicular end and load-side, by metal spiral shell Mother is fixed on the inner side of load-side end cap.
Above-mentioned horizontal end 61 preferably has two kinds of preferred embodiments.
Embodiment one:As shown in Fig. 2 horizontal end is one piece of metal fixing plate being wholely set with perpendicular end.When metal nuts position Put after fixing, the perpendicular end of metal nuts is in contact with the inner surface of end face covering part, the horizontal end of metal nuts and edge bend Inner surface be in contact.
Embodiment two:As shown in figure 4, horizontal end preferably includes fixed part 611, metal spring 612 and sheet metal 613, metal Piece is arranged between fixed part and edge bend, and sheet metal is connected by metal spring with fixed part;Fixed part and perpendicular end It is wholely set;Plain conductor mutually welds with fixed part or sheet metal.
After metal nuts position is fixed, sheet metal is pressed into contact with edge bend under the effect of metal spring elastic force Inner surface.
Further, above-mentioned metal nuts are preferably made by copper material forms.
Further, metal nuts are nested in the stator faces of load-side, and the perpendicular end outer surface of metal nuts and load The stator faces of side are flush.
Further, metal screws are preferably jam nut.
Preferred embodiment of the present utility model described in detail above, still, the utility model is not limited to above-mentioned reality The detail in mode is applied, in range of the technology design of the present utility model, the technical solution of the utility model can be entered The a variety of equivalents of row, these equivalents belong to the scope of protection of the utility model.

Claims (7)

  1. A kind of 1. equipotential permanent magnet direct current motor of both sides end cap, it is characterised in that:Including stator, p-m rotor, plastic-sealed body, Unsupported side end cap, load-side end cap, plain conductor, metal nuts and metal screws;
    Stator coaxial package is in the periphery of p-m rotor, and plastic-sealed body coaxial package is in the periphery of stator;
    P-m rotor includes rotating shaft, and unsupported side end cap and load-side end cap are set in the rotating shaft of stator both sides;
    Load-side end cap includes the end face covering part being sleeved in rotating shaft and the edge bend for being arranged on end face covering part surrounding;
    Plain conductor is arranged between stator and plastic-sealed body, and one end of plain conductor is mutually welded with unsupported side end cap, and metal is led The other end of line is connected with metal nuts;
    Metal nuts include horizontal end and perpendicular end, wherein, horizontal end is mutually welded with plain conductor, and screwed hole is provided with perpendicular end;
    Metal screws sequentially pass through the stator faces of load-side end cap, the screwed hole on perpendicular end and load-side, and metal nuts are consolidated It is scheduled on the inner side of load-side end cap;After metal nuts position is fixed, the perpendicular end of metal nuts and the inner surface of end face covering part It is in contact, the horizontal end of metal nuts is in contact with the inner surface of edge bend.
  2. 2. end cap equipotential permanent magnet direct current motor in both sides according to claim 1, it is characterised in that:P-m rotor is also Including rotor core and magnet steel;Rotor core includes the interior iron core being sleeved in rotating shaft and the outer iron for being set in interior its outer diameter Core, magnet steel are uniformly nested in the periphery of outer iron core;Insulation connecting layer is filled between interior iron core and outer iron core.
  3. 3. end cap equipotential permanent magnet direct current motor in both sides according to claim 2, it is characterised in that:Magnet steel passes through note Modeling plastics are molded to be formed with outer iron core to be structure as a whole.
  4. 4. end cap equipotential permanent magnet direct current motor in both sides according to claim 1, it is characterised in that:Metal nuts are embedding It is enclosed in the stator faces of load-side, and the perpendicular end outer surface of metal nuts and the stator faces of load-side are flush.
  5. 5. end cap equipotential permanent magnet direct current motor in both sides according to claim 1, it is characterised in that:Metal nuts Horizontal end includes fixed part, metal spring and sheet metal, and sheet metal is arranged between fixed part and edge bend, and sheet metal passes through Metal spring is connected with fixed part;Fixed part is wholely set with perpendicular end;After metal nuts position is fixed, sheet metal is in metal Under spring force effect, the inner surface in edge bend is pressed into contact with.
  6. 6. end cap equipotential permanent magnet direct current motor in both sides according to claim 1, it is characterised in that:Metal screws are Jam nut.
  7. 7. end cap equipotential permanent magnet direct current motor in both sides according to claim 1, it is characterised in that:Metal nuts are in L-type is U-shaped.
CN201720817370.3U 2017-07-07 2017-07-07 A kind of equipotential permanent magnet direct current motor of both sides end cap Active CN206878648U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201720817370.3U CN206878648U (en) 2017-07-07 2017-07-07 A kind of equipotential permanent magnet direct current motor of both sides end cap
PCT/CN2018/086496 WO2019007148A1 (en) 2017-07-07 2018-05-11 Anti-electric erosion motor automatic production line and anti-electric erosion motor
JP2019537792A JP6633260B1 (en) 2017-07-07 2018-05-11 Automatic production line of motor for preventing corrosion and motor for preventing corrosion
MYPI2019003007A MY201549A (en) 2017-07-07 2018-05-11 Anti-electric erosion motor automatic production line and anti-electric erosion motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720817370.3U CN206878648U (en) 2017-07-07 2017-07-07 A kind of equipotential permanent magnet direct current motor of both sides end cap

Publications (1)

Publication Number Publication Date
CN206878648U true CN206878648U (en) 2018-01-12

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Country Status (4)

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JP (1) JP6633260B1 (en)
CN (1) CN206878648U (en)
MY (1) MY201549A (en)
WO (1) WO2019007148A1 (en)

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Also Published As

Publication number Publication date
WO2019007148A1 (en) 2019-01-10
JP6633260B1 (en) 2020-01-22
MY201549A (en) 2024-02-28
JP2020503833A (en) 2020-01-30

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