KR20140100652A - Rear housing for motor and motor comprising the same - Google Patents

Rear housing for motor and motor comprising the same Download PDF

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Publication number
KR20140100652A
KR20140100652A KR1020130013521A KR20130013521A KR20140100652A KR 20140100652 A KR20140100652 A KR 20140100652A KR 1020130013521 A KR1020130013521 A KR 1020130013521A KR 20130013521 A KR20130013521 A KR 20130013521A KR 20140100652 A KR20140100652 A KR 20140100652A
Authority
KR
South Korea
Prior art keywords
motor
rear housing
rotor
housing
hall sensor
Prior art date
Application number
KR1020130013521A
Other languages
Korean (ko)
Inventor
최창식
김현수
Original Assignee
주식회사 지앤제이
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 주식회사 지앤제이 filed Critical 주식회사 지앤제이
Priority to KR1020130013521A priority Critical patent/KR20140100652A/en
Publication of KR20140100652A publication Critical patent/KR20140100652A/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material thereof
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/03—Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The present invention relates to a motor having a power connector and a hole sensor holder integrally formed therein, which is excellent in manufacturing processability, reduces noises and vibrations, And a motor including the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rear housing for a motor,

The present invention relates to a rear housing and a motor including the same, and more particularly, to a motor having a rear housing and a motor including the same. More particularly, the present invention relates to a rear housing and a motor including the housing. And a motor including the same. [0002] The present invention relates to a rear housing for a motor, and a motor including the same.

Generally, an IPM motor is a motor in which a permanent magnet is embedded in a rotor,

In the conventional IPM motor, a coil is wound around a stator core fixed to the inside of a cylindrical housing, and a magnet is embedded in a rotor supported by a rotating shaft inside the stator core. A plurality of holes are formed in the cylindrical rotor so that the magnets are embedded. A rectangular magnet is embedded in the holes to constitute the rotor of the motor. A hall sensor for sensing the position of the rotor is provided inside the rear housing. In such a motor, after the hall sensor senses the position of the rotor, a signal is sent to the external controller. When a current is supplied to the coil of the stator, the rotor is rotated by the electromagnetic force of the rotor and the stator, The rotating shaft is then rotated to operate the motor.

In the conventional motor, as shown in FIGS. 1 and 2, a power connector 7 is fixed to a rear housing 5 manufactured by an aluminum die-casting method using a screw, and a printed circuit board assembly The PCB assembly 10 is inserted into the hole sensor holder 8 and then molded with silicone resin. Then, the PCB assembly 10 is coupled to the end of the rear housing 5 using a screw, and the hole sensor connector is coupled to the hole sensor connector Lt; / RTI >

In this type of motor, it is necessary to assemble several parts into one screw. Therefore, it is difficult to assure uniform characteristics because the number of parts is large and product characteristics are influenced by component tolerance and assembly tolerance while assembling each part. There was a high possibility of occurrence. Particularly, there are parts and assembly tolerances that occur when the hall sensor is connected to the hall sensor connector, and parts and assembly tolerance that occur when the hall sensor connector is coupled to the rear housing. There is a high possibility that defects occur due to failure to be constantly maintained, and since the materials of the front and rear housings are the same, there are disadvantages of noise and vibration.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce the number of components to be assembled by integrally forming a hole sensor holder and a power supply connector in a rear housing It is possible to improve the manufacturing processability and to prevent unevenness of the motor characteristics which arise from double deviations in assembling the hall sensor and the deviations of the electric angle due to the assembly tolerance to thereby make the characteristics of the motor constant, The front housing and the rear housing are made of different materials so as to minimize noise.

Another object of the present invention is to provide a motor including the rear housing of the present invention, which has excellent manufacturing processability, uniform characteristics, and reduced noise and vibration.

One aspect of the present invention for achieving the above object is a rear housing of a motor for defining an internal space for accommodating a motor,

A hole sensor holder for receiving a hall sensor of a motor integrally formed on one side of the rear housing; And

And a power supply connector integrally formed on the other side of the rear housing.

According to another aspect of the present invention for achieving the above object,

A front and a rear housing coupled to each other to form a receiving space therein;

A rotating shaft supported and rotatably supported between first and second ball bearings respectively installed to be opposed to the front and rear housings;

A rotor coupled to the rotating shaft and rotating integrally with the rotating shaft;

A stator installed in the inner housing space of the front and rear housings to surround the rotor and rotate the rotor; And

A sensor magnet for detecting a magnetic pole, which is magnetized multipolarly so that the hall sensor can sense the position of the rotor, and an internal circuit for transmitting a rotor position signal sensed by the hall sensor to the external controller, And a power connector capable of supplying a current from the external controller to the stator coil based on a signal sent to the printed circuit board assembly, the Hall sensor connector, and the external controller,

A hole sensor holder for housing two or more hole sensors integrally formed on one side of the rear housing; And a power connector integrally formed on the other side of the rear housing.

According to the present invention, since the hole sensor holder housing and the power cable housing are integrally formed in the rear housing, the number of parts to be assembled and the separate assembly process are eliminated, thereby improving the manufacturing processability, Furthermore, since the printed circuit board having the hall sensor can be coupled to the stator assembly more easily, firmly, and accurately, the electric characteristics of the motor can be uniformly displayed as the electric angle becomes constant, . In addition, according to the present invention, noise and vibration can be reduced by combining different materials, thereby further improving the quality of the motor.

1 is a schematic exploded perspective view of a conventional motor.
2 is an assembled state view of a conventional motor.
3 is a schematic exploded perspective view of a motor according to an embodiment of the present invention.
4 is a schematic perspective view of a rear housing of an embodiment of the present invention.
5 is an assembled state view of a motor according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings illustrate exemplary embodiments of the present invention and are not to be construed as limiting the technical scope of the present invention.

3 is an exploded perspective view schematically showing a rear housing and a hole sensor assembly according to an embodiment of the present invention. Referring to FIG. 3, the rear housing 50 for a motor according to an embodiment of the present invention includes a rear housing of a motor that defines an internal space for accommodating a motor, and a hall sensor of a motor integrally formed on one side of the rear housing A hole sensor holder 51 for accommodating the hole sensor; And a power connector 52 integrally formed on the other side of the rear housing. A plurality of iron cores are stacked on the stator 40 and the wires are wound.

Referring to FIG. 4, the rear housing 50 of the present invention may be an injection molded body in which the hole sensor holder 51 formed by injection molding and the power source connector 52 are integrally formed. The motor housing may be formed by BMC (Bulk Molding Compound) molding.

The power connector 52 and the hole sensor holder 51 are integrally formed in the rear housing of the present invention to reduce the number of parts and simplify the assembling process to increase the price competitiveness and the rear housing can be formed by injection molding such as BMC molding It is an injection molded product and it has price competitiveness.

Another aspect of the present invention relates to a motor including the motor housing described above. 5 is an assembled state view of a motor according to an embodiment of the present invention. The motor according to an embodiment of the present invention includes a front housing 10 and a rear housing 50 which are coupled to each other to form a receiving space therein; A rotary shaft 25 rotatably installed between the first and second ball bearings 31 and 32 installed to be opposed to the front and rear housings 10 and 50, respectively; A rotor 30 coupled to the rotary shaft 25 and integrally rotating with the rotary shaft; A stator 40 installed in the inner housing space of the front and rear housings 10 and 50 to enclose the rotor 30 and rotating the rotor 30 and a stator 40 disposed on one side of the rotor 30, A printed circuit board assembly 73 and a hall sensor connector 72 having an internal circuit for transmitting the position of a rotor sensed by the hall sensor to the external controller and having a Hall sensor 71 for detecting the position of the rotor, And a power connector (52) formed on the outer surface of the housing (50) so that an external controller can apply a current to the coil of the stator based on a signal received from the hall sensor assembly, And a power connector 52 integrally formed on the other side of the rear housing. Reference numeral 20 denotes a washer.

The motor of the present invention may be an IPM motor. In the motor of the present invention, the hole sensor holder 51 and the power source connector 52 may be an injection molded body integrally formed in the rear housing by injection molding.

In the motor of the present invention, the front housing 10 is made of an aluminum material, the stator 40 is made of a silicon steel plate, and the rear housing 50 is made of a plastic injection molding material. When the material is different, the medium and the natural frequency are different from each other, so that the material exhibits good characteristics against noise and vibration. In the motor, devices necessary for driving the motor are provided in the printed circuit board assembly 73. In particular, the printed circuit board assembly 73 includes a Hall sensor 71 for sensing the position of the rotor 30, . The printed circuit board assembly 73 is a printed circuit board in which a copper foil line is formed to connect external output signal wires by soldering and constitute a circuit by an electric element or the like.

3, the Hall sensor 71 is fixed to the side of the rotor by a Hall sensor holder 51 formed integrally with the rear housing 50. As shown in FIG. The hall sensor 71 is configured to detect a position of the rotor 30 by a signal transmitted by a sensor magnet that rotates in accordance with the rotation operation of the rotor 30 and the other side of the printed circuit board assembly 73 And a hall sensor connector 72 for transmitting hall sensor signals to the outside is connected. In general, two or three hole sensors are formed, so that the hole sensor insertion holes in the hole sensor holder 51 are formed in the same number as the number of sensors.

     In the present invention, the PCB sensor is inserted into the hole sensor holder 51, and then the silicone resin is coated and fixed by thermosetting. The printed circuit board assembly 73 has a structure in which a Hall sensor and a lead wire are connected by soldering to a printed circuit board, and a Hall sensor connector is connected to the end of the lead wire.

In the motor of the present invention, when a power is applied to a wire wound around the stator 40, a rotating system is formed, and the rotor 30 is rotated by the electromagnetic force of the permanent magnet attached to the rotating system, The rotating shaft 25 provided inside the electron 30 interlocks and rotates at the same time. The Hall sensor 71 installed on the outer side of the rotor 30 through the Hall sensor holder 51 senses a magnetic flux that changes as the permanent magnet of the rotor 30 rotates, The rotor 30 is rotated by the action of the rotor 30 and the stator 40 when the current is supplied to the winding coil of the stator 40 on the basis of the position of the rotor 30, The motor 25 is rotated to operate the motor. Since the motor drive is controlled based on the position of the rotor sensed by the hall sensor 71, the motor characteristics are greatly influenced by the position of the hall sensor. The Hall sensor 71 detects the relative position of the printed circuit board assembly 73 provided with the Hall sensor 71 with respect to the stator 40 or the rotor 30 It is very important that the printed circuit board assembly 73 is coupled to the correct position of the rear housing 50.

In the motor of the present invention, since the Hall sensor is assembled in the integrated rear housing without assembling the Hall sensor cover, the hall sensor can be assembled accurately and constantly, and the electric angle can be constantly controlled. Can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: front housing 50: rear housing
25: rotating shaft 20: washer
30: rotor 40: stator
51: Hall sensor holder 52: Power connector
70: Hall sensor assembly 71: Hall sensor
72: Hall sensor connector 73: Printed circuit board assembly
80: Mold

Claims (7)

A rear housing of a motor defining an interior space for receiving a motor,
A hole sensor holder for receiving a hall sensor of a motor integrally formed on one side of the rear housing; And
And a power supply connector integrally formed on the other side of the rear housing.
The rear housing for a motor according to claim 1, wherein the rear housing is integrally formed with the power source connector and the hole sensor holder formed by injection molding.
The rear housing for a motor according to claim 1, wherein the motor housing is formed by BMC (Bulk Molding Compound) molding.
A front and a rear housing coupled to each other to form a receiving space therein;
A rotating shaft supported and rotatably supported between first and second ball bearings respectively installed to be opposed to the front and rear housings;
A rotor coupled to the rotating shaft and rotating integrally with the rotating shaft;
A stator installed in the inner housing space of the front and rear housings to surround the rotor and rotate the rotor; And
And a printed circuit board assembly formed on one side of the rotor and having a hall sensor for sensing a position of the rotor and an internal circuit connected to the Hall sensor signal for sensing the sensed Hall sensor signal,
A hole sensor holder for housing two or more hole sensors integrally formed on one side of the rear housing; And a power connector integrally formed on the other side of the rear housing.
5. The motor according to claim 4, wherein the hole sensor holder and the power connector are formed integrally with the rear housing by injection molding.
The motor according to claim 1, wherein the front housing is made of an aluminum material, the stator core is made of a silicon steel plate, and the rear housing is made of a plastic injection material.
The motor according to claim 1, wherein the motor is an IPM motor.
KR1020130013521A 2013-02-06 2013-02-06 Rear housing for motor and motor comprising the same KR20140100652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130013521A KR20140100652A (en) 2013-02-06 2013-02-06 Rear housing for motor and motor comprising the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130013521A KR20140100652A (en) 2013-02-06 2013-02-06 Rear housing for motor and motor comprising the same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR20140174032A Division KR20150003700A (en) 2014-12-05 2014-12-05 Rear housing for ipm motor and ipm motor comprising the same

Publications (1)

Publication Number Publication Date
KR20140100652A true KR20140100652A (en) 2014-08-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130013521A KR20140100652A (en) 2013-02-06 2013-02-06 Rear housing for motor and motor comprising the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200486315Y1 (en) * 2017-09-22 2018-05-02 신광자 Housing structure of motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200486315Y1 (en) * 2017-09-22 2018-05-02 신광자 Housing structure of motor

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