KR101859298B1 - Damping Structure for Lowering Vibration and Noise of Brush Holder of Vehicle D.C Motor - Google Patents
Damping Structure for Lowering Vibration and Noise of Brush Holder of Vehicle D.C Motor Download PDFInfo
- Publication number
- KR101859298B1 KR101859298B1 KR1020160166760A KR20160166760A KR101859298B1 KR 101859298 B1 KR101859298 B1 KR 101859298B1 KR 1020160166760 A KR1020160166760 A KR 1020160166760A KR 20160166760 A KR20160166760 A KR 20160166760A KR 101859298 B1 KR101859298 B1 KR 101859298B1
- Authority
- KR
- South Korea
- Prior art keywords
- fitting
- brush holder
- commutator
- yoke
- assembly
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/021—Decoupling of vibrations by means of point-of-contact supports, e.g. ball bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Abstract
A DC motor for a vehicle according to the present invention includes: a cover assembly; A lower housing coupled to the cover assembly; a yoke assembly having a plurality of magnetic poles disposed in the cover assembly; An armature core having a plurality of extreme values for winding coils interacting with the magnetic pole; and an armature assembly including upper and lower insulators provided on and below the armature core; A commutator installed below the armature core and having the same number of commutator thin films corresponding to the magnetic pole; And a brush holder disposed inside the housing, the brush holder including a brush selectively in contact with the commutator as the armature assembly rotates, wherein the armature core and the commutator are configured to rotate together with the rotation shaft inserted in the center, A cushioning member coupled to the fitting protrusion provided in the direction of the support body 3 of the brush holder; And a yoke cylindrical body constituting a yoke assembly that engages with the fitting recessed portion of the cushioning member. The brush holder includes a cushioning structure for left and right vibration and noise attenuation.
Description
BACKGROUND OF THE
Generally, a DC motor as disclosed in JP-A-2001-0097340 and JP-A-2003-0035232 has been introduced as an apparatus for sucking outside air for operation of an air conditioning system which is an automotive air conditioner.
The direct current motor rotates a blower fan to circulate the air in the atmosphere or the interior of the vehicle through air around the evaporator, thereby changing the high temperature and high humidity air into low temperature dehumidified air to be introduced into the room Ensure a pleasant environment.
The direct current motor is configured such that an armature is rotatably disposed inside a yoke on which magnets are arranged on the inner circumferential surface. The armature has a plurality of teeth extending radially from the rotation axis, and a plurality of slots for the armature coil winding are formed in the axial direction between the extreme value and the adjacent extreme values.
A plurality of coils are wound around the slots at predetermined intervals, and each of the coils is connected to a commutator thin film (segment) of a commutator mounted on a rotating shaft spaced a predetermined distance from the armature .
Each commutator thin film is connected to a brush so as to be energized.
Accordingly, when an electric current is supplied to the commutator from the brush, an electric field is formed in each of the coils, and the interaction between the generated electric field and the magnet attached to the yoke rotates the rotating shaft equipped with the armature and the commutator, So that the blower fan is rotationally driven to be applied to a vehicle air-conditioning system or the like.
Such a DC motor can be used in an ABS (Anti-Lock Brake System) system used in a vehicle braking system because of its wide and high precision speed control capability.
In recent years, various motors having various structures have been researched and developed in order to maximize the miniaturization of the motor and the driving efficiency as well as to prevent noise and vibration in accordance with the demand of the DC motor market.
The DC motors disclosed in the above-mentioned JP-A-2001-0097340 and 2003-0035232 have been developed by inserting a rubber for absorbing noise and vibration on the side of a motor in the case of electrons, but the vibration of the motor in the up- In the latter case, an O-ring is inserted in the upper and lower portions of the motor, and the problem that the vibration prevention effect becomes weak due to increase in hardness due to O-ring compression is a problem there was.
Accordingly, the present inventors intend to propose an improved DC motor for a vehicle that has higher efficiency and can reduce noise and vibration of a motor in view of the above-mentioned circumstances.
The object of the present invention is to prevent noise from being transmitted to the inside of a vehicle by attenuating noise and vibration generated when a brush repeatedly intercepts and departs from a thin film of a commutator.
It is another object of the present invention to further improve the vibration and noise reduction effect by coupling the buffer member for achieving the object of the present invention and the yoke cylinder constituting the yoke assembly in a rigid state.
The present invention relates to a cover assembly,
A lower housing coupled to the cover assembly; a yoke assembly having a plurality of magnetic poles disposed in the cover assembly;
An armature core having a plurality of extreme values for winding coils interacting with the magnetic pole; and an armature assembly including upper and lower insulators provided on and below the armature core;
A commutator installed below the armature core and having the same number of commutator thin films corresponding to the magnetic pole; A brush holder disposed inside the housing, the brush holder including a brush selectively in contact with the commutator as the armature assembly rotates;
, ≪ / RTI >
Wherein the armature core and the commutator are configured to rotate together with the rotation shaft fitted in the center,
A cushioning member coupled to the fitting protrusion provided in the direction of the support 3 of the brush holder; And a yoke cylindrical body constituting a yoke assembly which is engaged with the fitting recessed portion of the cushioning member. The present invention is also characterized in that the brush holder left and right vibration and noise reducing cushioning means are provided.
The vibration and noise generated when the brush constituting the brush holder repeatedly intercepts and departs from the thin film of the commutator can be buffered through the cushioning member to greatly enhance the noise attenuation effect due to the vibration of the motor.
In addition, the present invention has an effect that the cushioning member and the yoke cylindrical body are coupled to each other to firmly hold the yoke cylindrical body and prevent the cushioning member from coming off, thereby continuously maintaining the vibration and noise reduction effect of the motor.
Further, according to the present invention, the vibration generated when the motor rotation shaft repeats the contact and departure of the brush to the groove between the thin film of the commutator and the thin film and the vibration generated during the rotation of the rotation shaft are mutually canceled through the yoke cylindrical body, It has an effect that it can be reduced.
1 is a configuration diagram of a DC motor according to an embodiment to which the present invention is applied.
FIG. 2 is an exploded perspective view of the motor of FIG. 1; FIG.
3 is an exploded perspective view of the DC motor driving unit of FIG.
4 is an end view of the motor, which is an example of the present invention.
5 is an exploded perspective view of a shock absorber for vibration and noise reduction provided on the rotating shaft of the present invention.
Fig. 6 is an internal configuration diagram of the buffer means of Fig. 5;
Fig. 7 is a view showing a coupling structure of the buffering means of Fig. 5 to the cover assembly;
FIG. 8 is a diagram showing a configuration of a power supply connector for supplying power to the DC motor of the present invention.
FIG. 9 is a partially assembled view of the power supply connector of the present invention in a state in which it is disconnected. FIG.
10 is a partially exploded perspective view of the brush holder and the power supply connector of the present invention.
Fig. 11 is a view showing a coupling structure for explaining the insulating means of the present invention. Fig.
12 is an exploded perspective view of the insulating means of the present invention.
Fig. 13 is a configuration diagram of the insulation means of Fig. 12 combined with a commutator. Fig.
Fig. 14 is a partial assembled view of the inside of a motor provided with the commutator and the insulation means of the present invention. Fig.
Hereinafter, a preferred embodiment of the motor according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of a DC motor M according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a brushless DC motor M according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the motor of FIG. 1, FIG. 3 is an exploded perspective view of the DC motor driving unit of FIG. 2, and FIG. 4 is an end view of the motor .
1 to 4, a DC motor M according to an embodiment of the present invention includes a
That is, the structure of the present invention includes a
A
An
A
, ≪ / RTI >
The
A plurality of
The upper and
The constitution of each part presented below is related to the technical gist of the present invention, so that it will be explained concretely with the technical gist of the present invention.
The
The
The
As shown in FIG. 3, upper and lower rims of the yoke
The positions of the recessed
The
The upper and lower
Therefore, the upper and lower
The upper and lower
In the present invention, there is provided a brush holder left and right vibration and noise damping means 90 fitted to the
That is, the buffering means 90 for damping the left and right vibration and noise of the brush holder is provided with a plurality of
The
The front and rear engaging
The
The
In the buffering means 90 for damping the left and right vibrations and the noise of the constitution, left and right vibrations that occur when the
That is, when the vibration generated in the
The present invention also provides a grounding means 110 including a
That is, the grounding means 110 sandwiches the
The grounding terminal 100-3 '' 'protrudes above one side of the grounding connector pin 100-3, and the hooking jaw 100-3' '' bent inward is connected to the grounding of the yoke
The grounding means 110 included in the
The engaging step 100-3 "" of the ground terminal 100-3 '"formed on the grounding connector pin 100-3 is inserted into the
The
A rotating
A
The
Particularly, in the present invention, the contact of the
3, 12, and 13, the
The insulation means 120 having such a structure is formed by inserting a
The
The
It is to be understood that the foregoing detailed description of the present invention has been presented for illustrative purposes only and is not intended to limit the scope of the present invention. It is intended that the scope of the invention be defined by the claims appended hereto, and that all such modifications and variations are intended to be included within the scope of the present invention.
10:
10B:
20: Amateur assembly 21: Coil
22:
23, 24: upper and lower insulator 30: yoke assembly
31: magnetic pole 32: yoke cylinder
32A, 32B: projecting
32D: fit-in groove for ground connection 40: lower housing
50:
50A ': insertion projection 51: commutator thin film
51A: coil connection latch piece 60: brush holder
61:
61B: spring 62: support
62A:
63: Connector seating portion 70:
80: Upper, lower, left, right vibration and noise reduction means
81, 82: upper and
81C and 82C: recessed
81E, 82E: bearing
83A, 84A:
90: Brush holder Left and right vibration and noise suppression
90A:
90A ': Fitting recessed
100: Power supply connector 100-1: Main body
100-1 ': fastening piece 100-1'':
100-2: Power connector pin 100-3: Ground connector pin
100-2 ', 100-3': fitting projection connecting pieces 100-2 ", 100-3": fitting groove
100-3 '': Ground terminal 100-3 ''': Clamping jaw
110: Grounding means 120: Insulation means
121:
120B: insulated protruding
130:
160: Choke coil
Claims (6)
A yoke assembly 30 having a lower housing 40 coupled to the cover assembly 10 and a plurality of magnetic poles 31 disposed within the cover assembly 10;
An armature core 22 having a plurality of extreme values 22A wound with coils 21 interacting with the magnetic pole 31 and upper and lower insulators 23 coupled to the upper and lower portions of the armature core 22, An armature assembly (20) including an armature (24);
A commutator 50 provided below the armature core 22 and having the same number of commutator thin films 51 corresponding to the exciting magnetic poles 31; And a brush holder (60) disposed inside the lower housing (40) and including a brush (61) selectively in contact with the commutator (50) as the armature assembly (20) rotates;
, ≪ / RTI >
The armature core 22 and the commutator 50 are configured to rotate together with the centering rotary shaft 70,
A plurality of buffer members 90A coupled to a plurality of fitting projections 62A provided in the direction of the support body 62 of the brush holder 60; And a yoke cylinder 32 of the yoke assembly 30 which engages with the fitting recessed portion 90A 'of the cushioning member 90A to constitute a brush holder left and right vibration and noise reducing means 90 and,
The vibration damping means 90 for damping the vibration of the brush holder is provided with a plurality of cushioning members 62A which are engaged with a plurality of fitting protrusions 62A protruding from the support body 62 of the brush holder 60 at regular intervals 90A); And a fitting recessed portion 90A 'formed around the cushioning member 90A such that the fitting recessed portion 90A' of the cushioning member 90A is connected to the lower peripheral portion of the yoke cylindrical body 32 And is fitted into the fitting protrusion 32C formed in the fitting portion 32C,
The front and rear fastening protrusions 90A-1 are formed at both inner ends of the fitting space 90A "of the cushioning member 90A so that the engaging protrusions 90A- 62A-1 are fitted so that the fitting protrusions 62A and the buffer member 90A are engaged with each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160166760A KR101859298B1 (en) | 2016-12-08 | 2016-12-08 | Damping Structure for Lowering Vibration and Noise of Brush Holder of Vehicle D.C Motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160166760A KR101859298B1 (en) | 2016-12-08 | 2016-12-08 | Damping Structure for Lowering Vibration and Noise of Brush Holder of Vehicle D.C Motor |
Publications (1)
Publication Number | Publication Date |
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KR101859298B1 true KR101859298B1 (en) | 2018-06-28 |
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KR1020160166760A KR101859298B1 (en) | 2016-12-08 | 2016-12-08 | Damping Structure for Lowering Vibration and Noise of Brush Holder of Vehicle D.C Motor |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06217489A (en) * | 1993-01-11 | 1994-08-05 | Sanyo Electric Co Ltd | Motor fixing unit |
JPH10285865A (en) * | 1997-03-28 | 1998-10-23 | Asmo Co Ltd | Brush vibration preventing structure of motor |
KR20090074131A (en) * | 2009-06-11 | 2009-07-06 | 효성정밀 주식회사 | Bldc type blower motor |
JP2010183821A (en) * | 2009-01-09 | 2010-08-19 | Yamamoto Denki Kk | Motor power supply terminal connection part for motor power supply, brush holder, and motor using the same |
JP2014042376A (en) * | 2012-08-21 | 2014-03-06 | Mitsuba Corp | Insulator and electric motor |
-
2016
- 2016-12-08 KR KR1020160166760A patent/KR101859298B1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06217489A (en) * | 1993-01-11 | 1994-08-05 | Sanyo Electric Co Ltd | Motor fixing unit |
JPH10285865A (en) * | 1997-03-28 | 1998-10-23 | Asmo Co Ltd | Brush vibration preventing structure of motor |
JP2010183821A (en) * | 2009-01-09 | 2010-08-19 | Yamamoto Denki Kk | Motor power supply terminal connection part for motor power supply, brush holder, and motor using the same |
KR20090074131A (en) * | 2009-06-11 | 2009-07-06 | 효성정밀 주식회사 | Bldc type blower motor |
JP2014042376A (en) * | 2012-08-21 | 2014-03-06 | Mitsuba Corp | Insulator and electric motor |
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