CN210724483U - Hall installation mechanism - Google Patents
Hall installation mechanism Download PDFInfo
- Publication number
- CN210724483U CN210724483U CN201921883808.3U CN201921883808U CN210724483U CN 210724483 U CN210724483 U CN 210724483U CN 201921883808 U CN201921883808 U CN 201921883808U CN 210724483 U CN210724483 U CN 210724483U
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- Prior art keywords
- circuit board
- hall
- magnetic ring
- motor
- board support
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Abstract
The utility model discloses a Hall installation mechanism, including magnetic ring tray, magnetic ring, circuit board support, motor rear cover, Hall element, Hall circuit board, shield, oil blanket, fan blade and motor shaft, the magnetic ring tray is located the motor rear cover, adopts interference mode pressure equipment at the afterbody of motor shaft, will with the magnetic ring that the number of pole pairs of motor rotor is the same with glue dress on the magnetic ring tray, magnetic ring and motor shaft synchronous revolution when the motor rotates; the motor rear cover is also internally provided with a circuit board support, the circuit board support is provided with a plurality of uniformly distributed blind holes according to the Hall circuit board and the layout size thereof, the blind holes protrude out of the mounting surface of the circuit board support by a certain height and are positioned inside the magnetic ring, when the Hall circuit board and the circuit board support are mounted, the Hall element extends into the blind holes of the circuit board support, the Hall circuit board and the Hall element are encapsulated on the circuit board support together, and the encapsulated circuit board support is mounted on the motor rear cover together.
Description
Technical Field
The utility model relates to a motor field specifically discloses a hall installation mechanism.
Background
The permanent magnet motor used in the electric vehicle industry mostly uses Hall as a motor rotor position sensor, the Hall is arranged on a motor stator at intervals of 120 degrees according to the electrical angle of the motor, the Hall senses high and low pulse signals through the alternate change of magnetic steel on the rotor, if the motor is an 8-pole motor, the electrical angle of the motor is 4 times of the mechanical angle of the motor, and the mechanical angle of the Hall arranged at intervals of 120 degrees is at intervals of 30 degrees. Therefore, the controller is used for controlling the motor to operate and regulate the speed, most of Hall layouts of the permanent magnet motor in the market are different in magnetic pole quantity, and Hall circuit boards are not universal due to different installation intervals of the Hall on the circuit boards. Meanwhile, most of Hall devices are provided with a slot at the corresponding position of a stator, Hall pulse signal clutter is generated due to the influence of a Hall stator armature reaction magnetic field, gaps at the joint of different magnetic poles of a rotor and ferromagnetic substances, the position of the motor is misjudged by a controller, and accordingly stable operation of the motor is influenced, and once the Hall device is damaged by water, the motor cannot normally work or even work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hall installation mechanism for overcoming hall because hall installation position is intake and is caused hall circuit trouble.
The utility model discloses a realize through following technical scheme: a Hall installation mechanism comprises a magnetic ring tray, a magnetic ring, a circuit board support, a motor rear cover, a Hall element, a Hall circuit board, a dustproof cover, an oil seal, a fan blade and a motor shaft, wherein the magnetic ring tray is positioned in the motor rear cover and is pressed at the tail of the motor shaft in an interference manner, the number of magnetic rings with the same number as the pole pairs of a motor rotor is installed on the magnetic ring tray by glue, and the magnetic ring tray, the magnetic ring and the motor shaft synchronously rotate when the motor rotates; the motor rear cover is also internally provided with a circuit board support, the circuit board support is provided with a plurality of uniformly distributed blind holes according to the Hall circuit board and the layout size thereof, the blind holes protrude out of the mounting surface of the circuit board support by a certain height and are positioned inside the magnetic ring, when the Hall circuit board and the circuit board support are mounted, the Hall element extends into the blind holes of the circuit board support, the Hall circuit board and the Hall element are encapsulated on the circuit board support together, and the encapsulated circuit board support is mounted on the motor rear cover together.
The circuit board support is of a circular structure, a motor shaft hole is formed in the center of the circuit board support, a plurality of blind holes for mounting Hall elements are uniformly distributed in the circumferential direction by taking the motor shaft hole as the center, and the blind holes protrude out of the surface of the circuit board support; the outer portion of the blind hole is provided with a circle of square groove matched with the Hall circuit board in shape and size, and two corners in the square groove are provided with mounting holes for mounting the Hall circuit board.
A circle of circuit board support mounting platform is arranged in the motor rear cover, and the circuit board support is mounted on the circuit board support mounting platform.
The Hall circuit board is welded with a Hall element, the center of the Hall circuit board is provided with a motor shaft hole, four corners of the Hall circuit board are symmetrically provided with bolt mounting holes, and the Hall circuit board and the motor shaft hole are assembled on the circuit board support together through bolts.
The distance between the Hall element and the magnetic ring in the radial direction is 20.5mm to 4 mm.
Because most permanent magnet motors are three-phase, the electrical angle between three phase lines of the motor stator is formed by phase difference winding, and therefore three Hall elements on the Hall circuit board are also distributed and welded according to the phase difference electrical angle.
The number of the blind holes is 3 times of the number of the blind holes.
The end part of the motor rear cover is provided with a dustproof cover through a bolt, and an oil seal is arranged between the dustproof cover and a motor shaft.
The outside of the dustproof cover is also provided with a fan blade, and the fan blade is fixed with the tail end of the motor shaft.
During work, the Hall element, the Hall circuit board and the circuit board support stand still, the magnetic ring tray and the magnetic ring rotate around the Hall element when the motor rotates, and after the Hall circuit board is electrified, the Hall element in a blind hole of the circuit board support induces different pulse signals under different magnetic poles to determine the position of the rotor.
The utility model has the advantages that: the utility model discloses utilize electromechanical 120 degrees and hall electric angle to be separated by the principle of n pi +120 degrees coincidence, overcome different motors and use the shortcoming that different quantity magnetic pole motors used different mechanical angle overall arrangements, make different motors can improve hall circuit board commonality through using the same hall circuit board overall arrangement. The utility model discloses a hall is according to 120 degrees overall arrangements preparation circuit boards of mechanical angle. The whole lid outside behind the motor that arranges of huo sensing, hall and hall board are installed on the plastic support, then carry out the embedment to the hall board to effective waterproof. The induction magnetic steel required by the Hall is formed by ferrite injection molding, and then the whole body is magnetized according to the number of the magnetic poles of the motor.
Drawings
FIG. 1 is a schematic structural diagram of a Hall mounting mechanism.
Fig. 2 is a schematic structural view of a magnetic ring tray.
Fig. 3 is a sectional view a-a of the magnet ring tray.
Fig. 4 is a magnetic ring layout.
Fig. 5 is a sectional view B-B of fig. 4.
Fig. 6 is a schematic structural diagram of a circuit board support.
Fig. 7 is a cross-sectional view of fig. 6C-C.
Fig. 8 is a rear view of fig. 6.
Fig. 9 is a schematic structural diagram of the hall circuit board.
In the figure, 1, a magnetic ring tray 2, a magnetic ring 3, a circuit board support 4, a motor rear cover 5, a Hall circuit board 6 and a Hall circuit board
7. The dustproof cover 8, the oil seal 9, the fan blade 10 and the motor shaft.
Detailed Description
As shown in fig. 1-9, a hall installation mechanism comprises a magnetic ring tray 1, a magnetic ring 2, a circuit board support 3, a motor rear cover 4, a hall element 5, a hall circuit board 6, a dust cover 7, an oil seal 8, a fan blade 9 and a motor shaft 10, wherein the magnetic ring tray 1 is positioned in the motor rear cover 4 and is press-mounted at the tail part of the motor shaft 10 in an interference manner, the magnetic ring 2 with the same number of pole pairs as that of a motor rotor is mounted on the magnetic ring tray 1 by glue, and the magnetic ring tray 1, the magnetic ring 2 and the motor shaft 10 synchronously rotate when the motor rotates; still be equipped with circuit board support 3 in the lid 4 behind the motor, circuit board support 3 sets up the blind hole of a plurality of equipartitions according to hall circuit board 6 and overall arrangement size, and the blind hole protrudes circuit board support 3 installation face take the altitude to be located inside magnetic ring 2, when hall circuit board 6 and circuit board support 3 installation, hall element 5 stretches into circuit board support 4's blind hole, encapsulates hall circuit board 3 and hall on circuit board support 3 together simultaneously, installs the circuit board support 3 that the embedment is good on lid 4 behind the motor together again.
As shown in fig. 6-8, the circuit board support 3 is a circular structure, a motor shaft hole is formed in the center, a plurality of blind holes 3-1 for mounting hall elements are circumferentially and uniformly distributed by taking the motor shaft hole as the center, and the blind holes 3-1 protrude out of the surface of the circuit board support 3; the outer part of the blind hole 3-1 is provided with a circle of square groove 3-2 which is matched with the Hall circuit board 6 in shape and size, and two corners inside the square groove 3-2 are symmetrically provided with mounting holes 3-3 for mounting the Hall circuit board 6.
As shown in fig. 1, a circle of circuit board support mounting platform is arranged in the motor rear cover 4, and the circuit board support 3 is mounted on the circuit board support mounting platform.
As shown in fig. 9, the hall circuit board 6 is welded with a hall element 5, the center is provided with a motor shaft hole 6-1, four corners are symmetrically provided with bolt mounting holes 6-2, and the hall circuit board and the motor shaft hole are assembled on the circuit board support 4 through bolts.
As shown in fig. 1, the hall element 5 is located at a distance of 20.5mm to 4mm from the magnetic ring in the radial direction.
As shown in fig. 9, since most of the permanent magnet motors are three-phase, and the electrical angles between the three phase lines of the motor stator are formed by winding with a phase difference of 120 degrees, the three hall elements 5 on the hall circuit board 6 are also arranged and welded according to the electrical angles with the phase difference of 120 degrees.
As shown in FIG. 6, the number of the blind holes 3-1 is an integral multiple of 3.
As shown in fig. 1, the end of the motor rear cover 4 is mounted with a dust cover 7 by bolts, and an oil seal 8 is arranged between the dust cover 7 and a motor shaft 10.
As shown in fig. 1, a fan blade 9 is further disposed outside the dust cover 7, and the fan blade 9 is fixed to the tail end of a motor shaft 10.
In the work, hall element 5, hall circuit board 6 and circuit board support 3 motionless, magnetic ring tray 1 and magnetic ring 2 rotate around hall element 5 when the motor rotates, and after hall circuit board 6 circular telegram, hall element 5 in the blind hole of circuit board support 3 induces different pulse signal under different magnetic poles to confirm the position of rotor.
The Hall circuit board 6 originally arranged on the stator of the rotating motor is moved out of the rear cover 4 of the motor, so that the Hall signal interference caused by the armature reaction magnetic field of the stator of the motor can be reduced to a great extent, and the maintenance is convenient; the Hall circuit boards 6 are distributed according to the mechanical angle of 120 degrees, so that the same electric Hall circuit boards can be conveniently used by motors with different pole pairs; the circuit board bracket is provided with Hall elements which are arranged in the blind holes of the bracket and is filled and sealed with the whole circuit board, thus avoiding Hall damage or Hall failure caused by the short circuit of the circuit board due to water or humid environment.
Claims (9)
1. A Hall installation mechanism is characterized by comprising a magnetic ring tray, a magnetic ring, a circuit board support, a motor rear cover, a Hall element, a Hall circuit board, a dustproof cover, an oil seal, a fan blade and a motor shaft, wherein the magnetic ring tray is positioned in the motor rear cover and is pressed at the tail of the motor shaft in an interference fit mode, the magnetic ring with the same number of pole pairs as a motor rotor is installed on the magnetic ring tray by glue, and the magnetic ring tray, the magnetic ring and the motor shaft synchronously rotate when the motor rotates; the motor rear cover is also internally provided with a circuit board support, the circuit board support is provided with a plurality of uniformly distributed blind holes according to the Hall circuit board and the layout size thereof, the blind holes protrude out of the mounting surface of the circuit board support by a certain height and are positioned inside the magnetic ring, a certain distance is reserved between the blind holes and the magnetic ring, when the Hall circuit board and the circuit board support are mounted, the Hall element extends into the blind holes of the circuit board support, the Hall circuit board and the Hall are encapsulated on the circuit board support together, and the encapsulated circuit board support is mounted on the motor rear cover together.
2. The Hall installation mechanism according to claim 1, wherein the circuit board support is a circular structure, a motor shaft hole is formed in the center of the circuit board support, a plurality of blind holes for installing the Hall elements are uniformly distributed in the circumferential direction by taking the motor shaft hole as the center, and the blind holes protrude out of the surface of the circuit board support; the outer portion of the blind hole is provided with a circle of square groove matched with the Hall circuit board in shape and size, and two corners in the square groove are provided with mounting holes for mounting the Hall circuit board.
3. The hall mounting mechanism of claim 1 wherein a ring of circuit board bracket mounting platforms are provided in the motor rear cover, the circuit board brackets being mounted on the circuit board bracket mounting platforms.
4. The Hall mounting mechanism according to claim 1, wherein the Hall circuit board is welded with Hall elements, a motor shaft hole is formed in the center of the Hall circuit board, bolt mounting holes are symmetrically formed in four corners of the Hall circuit board, and the Hall element is assembled on the circuit board support through bolts.
5. The hall mounting mechanism of claim 1 wherein the hall element is radially spaced from the magnetic ring by between 20.5mm and 4 mm.
6. The Hall mounting mechanism of claim 1 wherein the three Hall elements on the Hall circuit board are also arranged in different electrical degrees and soldered.
7. The Hall mounting mechanism of claim 1 wherein the number of blind holes is an integer multiple of 3.
8. The Hall mounting mechanism according to claim 1, wherein a dust cap is mounted on an end portion of the rear motor cover through a bolt, and an oil seal is arranged between the dust cap and the motor shaft.
9. The Hall installation mechanism according to claim 1, wherein a fan blade is further provided outside the dust cap, and the fan blade is fixed to the tail end of the motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921883808.3U CN210724483U (en) | 2019-11-04 | 2019-11-04 | Hall installation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921883808.3U CN210724483U (en) | 2019-11-04 | 2019-11-04 | Hall installation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210724483U true CN210724483U (en) | 2020-06-09 |
Family
ID=70934256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921883808.3U Expired - Fee Related CN210724483U (en) | 2019-11-04 | 2019-11-04 | Hall installation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210724483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113838698A (en) * | 2021-09-22 | 2021-12-24 | 广州零六光电设备有限公司 | Intelligent control panel with intelligent bearing detection structure |
-
2019
- 2019-11-04 CN CN201921883808.3U patent/CN210724483U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113838698A (en) * | 2021-09-22 | 2021-12-24 | 广州零六光电设备有限公司 | Intelligent control panel with intelligent bearing detection structure |
| CN113838698B (en) * | 2021-09-22 | 2024-04-23 | 广州零六光电设备有限公司 | Intelligent control panel with intelligent bearing detection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20201104 |