CN205670739U - A kind of brushless electric machine - Google Patents
A kind of brushless electric machine Download PDFInfo
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- CN205670739U CN205670739U CN201620598754.6U CN201620598754U CN205670739U CN 205670739 U CN205670739 U CN 205670739U CN 201620598754 U CN201620598754 U CN 201620598754U CN 205670739 U CN205670739 U CN 205670739U
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- electric machine
- brushless electric
- motor
- rotor
- hall element
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Abstract
This utility model relates to a kind of brushless electric machine, including Hall element, housing and the cover body being arranged on shell end, cover body forms, with housing, the motor exocoel being isolated with motor cavity and closing, Hall element is arranged in motor exocoel, and the outer intracavity of motor is additionally provided with the magnet ring coordinated with Hall element, magnet ring is identical with the rotor magnetic pole of brushless electric machine, and the rotor synchronous axial system of magnet ring and brushless electric machine.Owing to magnet ring is identical with the rotor magnetic pole of brushless electric machine, and its rotor synchronous axial system with brushless electric machine, therefore it is consistent for being detected the position of magnetic pole of magnet ring by Hall element with the position of magnetic pole of detection rotor, and Hall element has been placed in motor exocoel, motor exocoel itself is closed, and isolate with motor cavity, thus Hall element can be avoided contacting with the lubricating oil in motor cavity, antirust oil, the volatile material of chemical polymerization class insulant, thus it is prevented effectively from Hall element and damages.
Description
Technical field
This utility model relates to technical field of motor manufacture, especially relates to a kind of brushless electric machine.
Background technology
Brushless electric machine is to utilize Hall element to detect the positional information of rotor, and positional information is sent to electricity
The logic circuit of machine completes the commutation function of stator winding, so that rotor persistently obtains constant moment, therefore hall sensing
Device plays pivotal role in brushless electric machine, if Hall element lost efficacy, then brushless electric machine can not run well.
As shown in fig. 1, the cavity being presently used for accommodating stator and rotor is referred to as motor cavity 01, at the end of motor,
Being additionally provided with a cover body 02, this cover body 02 is referred to as motor exocoel with the cavity of the housing composition of motor, generally sets in motor exocoel
Being equipped with radiator fan 03, Hall element 04 is arranged on stator rim, and is positioned in the inner chamber of motor, its objective is to detect rotor
Positional information.It is true that the ability such as its anti-vibration, anticorrosive and antipollution (Ru Shui, oil) is very limited, and present electricity
In machine design and production technology, in order to strengthen the insulating capacity of motor, structural strength, oxidation resistance and reduce electromagnetism altogether
Shake, the performance such as magnetic flux leakage, current way is to immerse stator, rotor, spray the insulant of chemical polymerization class, antirust
Oil etc., but the insulant of chemical polymerization class, antirust oil etc. can produce volatile material during motor runs, and these are waved
Volatile material has corrosivity mostly, especially produces high temperature during motor rotation, and this can make volatile material more, and Hall passes
Sensor easily causes in the environment of being in so losing efficacy or greatly reducing its physical life.
Therefore, how can be prevented effectively from Hall element inefficacy is the technology that current those skilled in the art need solution badly
Problem.
Utility model content
The purpose of this utility model is to provide a kind of brushless electric machine, so as to the Hall being prevented effectively from brushless electric machine passes
Sensor lost efficacy, it is ensured that the reliability service of brushless electric machine.
For reaching above-mentioned purpose, brushless electric machine provided by the utility model, including Hall element, housing be arranged on
The cover body of described shell end, described cover body forms the motor exocoel being isolated with motor cavity and closing, institute with described housing
State Hall element to be arranged in described motor exocoel, and the outer intracavity of described motor is additionally provided with and coordinates with described Hall element
Magnet ring, described magnet ring is consistent with the rotor magnetic pole of described brushless electric machine, and the rotor of described magnet ring and described brushless electric machine with
Step rotates.
Preferably, the pcb board being connected with described Hall element is arranged on the housing, and is positioned at described motor exocoel
In.
Preferably, the shaft end of described motor stretches into the outer intracavity of described motor, and described magnet ring is connected in described motor
Rotating shaft on.
Preferably, described housing is made up of two halfbodies mutually fastened.
Preferably, two described halfbodies are fastenedly connected by screw.
Preferably, the sealing gasket being arranged on two described halfbody bonding stations is also included.
Preferably, two described halfbody screw threads screw connection.
Preferably, the rotor of described brushless electric machine is p-m rotor or non-p-m rotor.
As can be seen from the above technical solutions, in brushless electric machine disclosed in this utility model, cover body is formed with housing
Motor exocoel, motor exocoel closing itself, and be isolated with motor cavity, Hall element is arranged in motor exocoel, and
And motor exocoel is additionally provided with the magnet ring coordinated with Hall element, this magnet ring is identical with the rotor magnetic pole of brushless electric machine, and
And the rotor synchronous axial system of magnet ring and brushless electric machine.
Owing to magnet ring is identical with the rotor magnetic pole of brushless electric machine, and its rotor synchronous axial system with brushless electric machine, therefore
It is consistent for detecting the position of magnetic pole of magnet ring with the position of magnetic pole of detection rotor by Hall element, and Hall element is put
Put in motor exocoel, motor exocoel itself close, and with motor cavity isolate, thus Hall element can avoid with
Lubricating oil in motor cavity, antirust oil, the volatile material of chemical polymerization class insulant contact, thus are prevented effectively from suddenly
That sensor degradation, and then ensure that whole brushless electric machine has preferable service life.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of brushless electric machine in prior art；
Fig. 2 is the cross-sectional schematic of brushless electric machine disclosed in this utility model embodiment.
Wherein, 1 is motor cavity, and 2 is housing, and 3 is motor stator, and 4 is pcb board, and 5 is Hall element, and 6 is magnet ring, 7
For rotor, 8 is rotating shaft.
Detailed description of the invention
Core of the present utility model is to provide a kind of brushless electric machine, so as to the Hall being prevented effectively from brushless electric machine passes
Sensor lost efficacy, it is ensured that the reliability service of brushless electric machine.
In order to make those skilled in the art be more fully understood that this utility model scheme, below in conjunction with the accompanying drawings and be embodied as
The utility model is described in further detail for mode.
Refer to the cross-sectional schematic that Fig. 2, Fig. 2 are brushless electric machine disclosed in this utility model embodiment.
Brushless electric machine disclosed in this utility model, including Hall element 5, housing 2, cover body, its middle shell 2 has
Accommodating motor stator 3 and the motor cavity of rotor 7, cover body is arranged on the end of housing 2, and cover body coordinates with housing 2
Rear formation motor exocoel, motor exocoel is mutually isolated with motor cavity, and motor exocoel originally closes chamber, hall sensing as one
Device 5 is arranged in motor exocoel, as shown in fig. 1, in order to reach the purpose to the detection of rotor 7 position, in the present embodiment
Also it is provided with, at the outer intracavity of motor, the magnet ring 6 coordinated with Hall element 5, the magnetic of the rotor 7 of this magnet ring 6 and brushless electric machine
The most identical, and rotor 7 synchronous axial system of this magnet ring 6 and brushless electric machine.
Need to illustrate, in the above-described embodiments, the end of so-called housing 2 be for whole brushless electric machine for
, for whole brushless electric machine, we define its rotating shaft 8 and stretch out and one end as outfan is front end, and relative with front end
The other end be end.
Owing to magnet ring 6 is identical with rotor 7 magnetic pole of brushless electric machine, and it is same with the rotor 7 of brushless electric machine
Step rotates, and it is consistent for therefore being detected the position of magnetic pole of magnet ring 6 by Hall element 5 with the position of magnetic pole of detection rotor 7
, and Hall element 5 has been placed in motor exocoel, motor exocoel itself is closed, and isolates with motor cavity, thus
Hall element 5 can be avoided and the lubricating oil in motor cavity, antirust oil, the volatile material of chemical polymerization class insulant
Contact, thus be prevented effectively from Hall element 5 and damage, and then ensure that whole brushless electric machine has preferable service life.
Further, ask comparison diagram 1 and Fig. 2, owing to the temperature of motor exocoel is substantially less than the temperature of motor cavity, because of
Brushless electric machine disclosed in this this utility model embodiment is without arranging radiator fan, and this just effectively reduces brushless electric machine
Production cost, the most also effectively reduces the motor brought because of radiator fan and runs noise, improve whole brushless electric machine
Quiet performance；It addition, actually Hall element 5 is divided into multiple working range, such as-30 DEG C～115 DEG C ,-20 DEG C～125
DEG C ,-55 DEG C～125 DEG C ,-40 DEG C～150 DEG C, temperature range is the widest, and the limiting temperature that can bear is the harshest, then Hall pass
The price of sensor 5 is the highest, and due to technical scheme disclosed in this utility model embodiment, Hall element 5 is by electricity
Machine inner chamber has been moved to motor exocoel, and the temperature of motor exocoel is substantially less than motor cavity, and this allows for the rule of Hall element
Lattice suitably can reduce on the premise of ensureing motor reliability, thus reduces the production cost of whole brushless electric machine further；
And, technical scheme disclosed in this utility model embodiment, also make the installation of Hall element 5 and safeguard the most square
Just.
Pcb board (Printed Circuit Board printed circuit board (PCB)) is positioned in motor exocoel in the present embodiment, and
It is fixed on housing 2, and pcb board 4 is also not limited to one with the connected mode of housing 2, such as can use bonding or
Screw connection etc..
As shown in Figure 2, the end of rotating shaft 8 extend into the outer intracavity of motor, and magnet ring 6 is fixedly connected in the rotating shaft 8 of motor,
Thus realize the synchronous axial system of magnet ring and rotor, in this utility model embodiment, magnet ring is specially permanent magnet, due to suddenly
That sensor 5 by can indirectly determine the position of rotor 7 to magnet ring 6 detection, thus institute in this utility model embodiment
Disclosed brushless electric machine either uses p-m rotor to be also non-p-m rotor, all can realize the detection to rotor 7 position.
In view of the convenience of dismounting, the housing 2 of brushless electric machine is made up of two halfbodies mutually fastened, such as institute in Fig. 2
Showing, it is connected that two halfbodies mutually fastened can use screw thread to screw, it is possible to uses screw to be fastenedly connected, when using screw fastening
During connection, in order to ensure the sealing of motor cavity, also sealing gasket can be set at the bonding station of two halfbodies.
Above brushless electric machine provided by the utility model is described in detail.Specific case pair used herein
Principle of the present utility model and embodiment are set forth, and the explanation of above example is only intended to help and understands that this practicality is new
The method of type and core concept thereof.It should be pointed out that, for those skilled in the art, without departing from this practicality
On the premise of new principle, it is also possible to this utility model is carried out some improvement and modification, these improve and modification also falls into this
In the protection domain that utility model right requires.
Claims (8)
1. a brushless electric machine, including Hall element (5), housing (2) and the cover body being arranged on described housing (2) end, institute
State cover body and form, with described housing (2), the motor exocoel being isolated with motor cavity and closing, it is characterised in that described Hall passes
Sensor (5) is arranged in described motor exocoel, and described motor outer intracavity is additionally provided with and coordinates with described Hall element (5)
Magnet ring (6), described magnet ring (6) is consistent with the rotor of described brushless electric machine (7) magnetic pole, and described magnet ring (6) and described nothing
Rotor (7) synchronous axial system of brush motor.
Brushless electric machine the most according to claim 1, it is characterised in that the pcb board being connected with described Hall element (5)
(4) it is arranged on described housing (2), and described pcb board (4) is positioned in described motor exocoel.
Brushless electric machine the most according to claim 1, it is characterised in that rotating shaft (8) end of described motor stretches into described electricity
The outer intracavity of machine, and described magnet ring (6) is connected in the rotating shaft (8) of described motor.
Brushless electric machine the most according to claim 1, it is characterised in that described housing (2) is by two halfbodies mutually fastened
Constitute.
Brushless electric machine the most according to claim 4, it is characterised in that two described halfbodies are fastenedly connected by screw.
Brushless electric machine the most according to claim 5, it is characterised in that also include being arranged on two described halfbody bonding stations
Sealing gasket.
Brushless electric machine the most according to claim 4, it is characterised in that two described halfbody screw threads screw connection.
Brushless electric machine the most according to claim 1, it is characterised in that the rotor (7) of described brushless electric machine is permanent magnetism
Rotor or non-p-m rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620598754.6U CN205670739U (en) | 2016-06-17 | 2016-06-17 | A kind of brushless electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620598754.6U CN205670739U (en) | 2016-06-17 | 2016-06-17 | A kind of brushless electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205670739U true CN205670739U (en) | 2016-11-02 |
Family
ID=57191354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620598754.6U Active CN205670739U (en) | 2016-06-17 | 2016-06-17 | A kind of brushless electric machine |
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| Country | Link |
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| CN (1) | CN205670739U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871163A (en) * | 2016-06-17 | 2016-08-17 | 重庆凯邦电机有限公司 | Brushless motor |
| CN108599513A (en) * | 2018-06-21 | 2018-09-28 | 许昌市大力电机制造有限公司 | A kind of permanent magnetic brushless with long service life |
| CN110289745A (en) * | 2019-07-25 | 2019-09-27 | 苏州金莱克汽车电机有限公司 | A kind of brushless motor with modified tone formula commutation angle |
-
2016
- 2016-06-17 CN CN201620598754.6U patent/CN205670739U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871163A (en) * | 2016-06-17 | 2016-08-17 | 重庆凯邦电机有限公司 | Brushless motor |
| CN108599513A (en) * | 2018-06-21 | 2018-09-28 | 许昌市大力电机制造有限公司 | A kind of permanent magnetic brushless with long service life |
| CN110289745A (en) * | 2019-07-25 | 2019-09-27 | 苏州金莱克汽车电机有限公司 | A kind of brushless motor with modified tone formula commutation angle |
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| GR01 | Patent grant |