CN108616195B - Motor with a motor housing - Google Patents
Motor with a motor housing Download PDFInfo
- Publication number
- CN108616195B CN108616195B CN201810635960.3A CN201810635960A CN108616195B CN 108616195 B CN108616195 B CN 108616195B CN 201810635960 A CN201810635960 A CN 201810635960A CN 108616195 B CN108616195 B CN 108616195B
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- CN
- China
- Prior art keywords
- brake
- bearing
- motor
- stator
- rear bearing
- 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.)
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Links
- 238000004804 winding Methods 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 abstract description 15
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a motor. The motor comprises a rear bearing (1) and a brake, wherein a first bearing chamber (2) is arranged on the brake, and the rear bearing (1) is arranged in the first bearing chamber (2) in a limiting mode. According to the motor, the heat dissipation efficiency of the motor brake can be improved, and the excessive temperature rise of the motor is avoided.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor.
Background
The motor is an electromagnetic device for converting and transmitting electric energy according to an electromagnetic induction principle, and has the main function of generating driving torque, and is a power source of electric appliances and various mechanical equipment.
As shown in fig. 1, in the conventional motor structure, the rear end cover 1 'supports the rear bearing 2' in an interference fit manner, and because of different materials, the thermal expansion of the rear end cover 1 'is larger than that of the rear bearing 2', so that the interference of the rear end cover 1 'and the rear bearing 2' is insufficient, and the reliability of the use of the bearing is affected. And this solution requires the addition of a rear bearing cover plate 6 'for axially positioning the rear bearing 2', the installation is relatively cumbersome.
In addition, due to the limitation of the structure of the rear end cover 1', the distance between the connecting end cover 3' and the brake winding is relatively short, and the brake winding is a main heating part of the brake 5', so that the temperature of the encoder 4' is too high, and the encoder 4' is easy to damage.
In addition, the rear end cover 1' is covered outside the brake 5', so that the heat dissipation area of the brake 5' is reduced, the heat dissipation of the brake 5' is required to be carried out through the rear end cover 1', and the heat dissipation efficiency of the brake 5' is reduced due to heat transfer resistance caused by different materials of the rear end cover 1', so that the temperature rise of the motor is overhigh.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the motor, which can improve the heat dissipation efficiency of a motor brake and avoid the overhigh temperature rise of the motor.
In order to solve the problems, the invention provides a motor which comprises a rear bearing and a brake, wherein a first bearing chamber is arranged on the brake, and the rear bearing is arranged in the first bearing chamber in a limiting mode.
Preferably, the brake comprises a brake stator, the first bearing chamber being arranged within the brake stator.
Preferably, a bearing seat is fixedly arranged in the brake stator, a first bearing chamber is arranged on the bearing seat, and the material of the bearing seat is consistent with the material of the outer ring of the rear bearing.
Preferably, the first bearing chamber is provided on a brake stator, and the material of the brake stator is the same as the material of the outer ring of the rear bearing.
Preferably, the motor further comprises a rotating shaft, the brake is further provided with a stop shoulder, the rotating shaft is provided with a stop step, the outer ring of the rear bearing is stopped on the stop shoulder, and the inner ring of the rear bearing is stopped on the stop step.
Preferably, the brake comprises a brake end, and the end part of the brake, which is far away from the brake end, is provided with the heat dissipation rib.
Preferably, the motor further comprises a rotating shaft, the opening end of the first bearing chamber is provided with a cover plate, the rotating shaft is provided with a stop step, the outer ring of the rear bearing is stopped on the cover plate, and the inner ring of the rear bearing is stopped on the stop step.
Preferably, the motor further comprises a shaft end cover and an encoder assembly, wherein the shaft end cover is fixedly connected to the brake, the encoder assembly comprises an encoder cover, and the encoder cover is fixedly arranged on the shaft end cover.
Preferably, the motor further comprises a casing, wherein the casing is sleeved on the periphery of the brake and is in interference fit with the brake.
Preferably, the motor further comprises a front end cover and a front bearing, wherein the front end cover is provided with a second bearing chamber, and the front bearing is arranged in the second bearing chamber.
The motor provided by the invention comprises a rear bearing and a brake, wherein the brake is provided with a first bearing chamber, and the rear bearing is arranged in the first bearing chamber in a limiting way. The motor is provided with the first bearing chamber on the brake, and then the rear bearing is arranged in the first bearing chamber, so that a separate rear end cover for mounting the rear bearing is not required to be arranged, the structure of the rear end cover can be omitted, the cost can be reduced, the length of the motor is shortened, the motor is convenient to miniaturize, the motor is simpler in structure, and the power density of the motor is improved; because the first bearing chamber is directly arranged on the brake, the rear end cover structure is omitted, so that the brake can directly exchange heat with external air, the heat transfer resistance of the brake is reduced, the heat exchange area of the brake is increased, the heat exchange capacity of the brake is improved, the heat dissipation efficiency of the motor brake can be effectively improved, the motor is prevented from being excessively high in temperature rise, and the motor is effectively protected.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art motor;
FIG. 2 is a schematic cross-sectional view of an electric motor according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a motor according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a brake of a motor according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a motor brake according to an embodiment of the present invention;
fig. 6 is a schematic view of an internal perspective structure of a motor according to an embodiment of the present invention;
fig. 7 is a schematic perspective sectional structure of a brake of a motor according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of the motor according to the embodiment of the present invention after removing the brake;
fig. 9 is a schematic perspective view of the motor according to the embodiment of the invention after the encoder is removed.
The reference numerals are expressed as:
1. a rear bearing; 2. a first bearing chamber; 3. a brake stator; 4. a shoulder; 5. a rotating shaft; 6. a stop step; 7. a heat dissipation rib; 8. a shaft end cover is connected; 9. an encoder cover; 10. a housing; 11. a front end cover; 12. a front bearing; 13. a second bearing chamber; 14. a brake winding; 15. a brake gear; 16. a motor stator; 17. a motor rotor; 18. an encoder.
Detailed Description
Referring to fig. 2 to 9 in combination, according to an embodiment of the present invention, the motor includes a rear bearing 1 and a brake on which a first bearing chamber 2 is provided, and the rear bearing 1 is limitedly mounted in the first bearing chamber 2.
According to the motor, the first bearing chamber 2 is arranged on the brake, and then the rear bearing 1 is arranged in the first bearing chamber 2, so that a separate rear end cover for mounting the rear bearing 1 is not required, the structure of the rear end cover can be omitted, the cost can be reduced, the motor length can be shortened, the motor is convenient to miniaturize, the motor structure is simpler, and the motor power density is improved; because the first bearing chamber 2 is directly arranged on the brake, the rear end cover structure is omitted, so that the brake can directly exchange heat with external air, the heat transfer resistance of the brake is reduced, the heat exchange area of the brake is increased, the heat exchange capacity of the brake is improved, the heat dissipation efficiency of the motor brake can be effectively improved, the motor is prevented from being excessively high in temperature rise, and the motor is effectively protected.
The brake comprises a brake stator 3, the first bearing chamber 2 being arranged in the brake stator 3. The brake further comprises a brake winding 14 and a brake gear 15, wherein the brake winding 14 is arranged in the brake stator 3, the brake gear 15 is arranged on one side, far away from the encoder assembly, of the brake stator 3, the brake gear 15 comprises an outer gear and an inner gear ring, the outer gear is fixedly arranged on the rotating shaft 5, the inner gear ring is arranged on a brake pad, when the motor works normally, the outer gear drives the inner gear ring to rotate, and then drives the brake pad to rotate, when braking is needed, the brake winding 14 on the brake stator 3 is electrified, and the brake winding 14 applies an acting force on the brake pad, so that the brake pad brakes, and further braking is formed on the rotating shaft 5.
In an embodiment, not shown in one of the figures, a bearing block is fixedly arranged in the brake stator 3, the bearing block is provided with a first bearing chamber 2, and the material of the bearing block is consistent with the material of the outer ring of the rear bearing 1. The bearing seat is cylindrical, a first bearing chamber 2 is formed in the center of the bearing seat along the axial direction, a mounting hole which is in interference fit with the bearing seat is formed in the brake stator 3 along the central axial direction, and the bearing seat is fixedly arranged in the mounting hole.
The bearing frame is independent structure, adopt the same material with the outer lane of rear bearing 1, then fixed the setting is in the installation intracavity of stopper stator 3, under this kind of circumstances, can only adopt the same material with the outer lane of rear bearing 1 to the structure of bearing, stopper stator 3 can adopt other materials, generally speaking, the material cost of the outer lane of rear bearing 1 is higher, after adopting this kind of mode, can guarantee that bearing frame and rear bearing 1 have the same expansion value, guarantee that the interference between them is unchangeable, thereby guarantee the reliability of bearing in the use, can only adopt the higher material of cost to the bearing frame that needs to guarantee the cooperation relation again simultaneously, need not adopt expensive material to whole stopper stator 3, can reduce the manufacturing cost of motor.
In the present embodiment, the first bearing chamber 2 is opened on the brake stator 3, and the material of the brake stator 3 is the same as the material of the outer ring of the rear bearing 1. In this embodiment, the first bearing chamber 2 is directly formed on the brake stator 3 without providing an independent structure, so that the process structure is simpler, the installation procedure is fewer, and the installation efficiency is higher.
The motor further comprises a rotating shaft 5, the brake is further provided with a stop shoulder 4, the rotating shaft 5 is provided with a stop step 6, the outer ring of the rear bearing 1 is stopped on the stop shoulder 4, and the inner ring of the rear bearing 1 is stopped on the stop step 6. The shoulder 4 can replace a rear bearing cover plate in the prior art, omits a mounting procedure, and has simple process. Through the cooperation of the stop shoulder 4 and the stop step 6, stable axial limit can be formed for the rear bearing 1. In addition, when adopting this kind of structure, keep off shoulder 4 setting and be close to one side of encoder subassembly at the stopper, the opening setting of first bearing room 2 is kept away from one side of encoder subassembly at the stopper, can more rationally utilize the step axle construction of pivot 5, need not to set up the back bearing apron that carries out the axial spacing to back bearing 1 in addition, can further simplify motor structure, reduces the axial length of motor.
The brake comprises a brake end, and a heat dissipation rib 7 is arranged at the end part of the brake, which is far away from the brake end. The heat dissipation area of the brake can be increased by the heat dissipation ribs 7, so that the heat dissipation effect of the brake is enhanced, and the temperature rise of the motor is reduced. The shape of the heat dissipation ribs 7 may be rectangular, cylindrical, or other shapes, and the plurality of heat dissipation ribs 7 are uniformly distributed along the circumferential direction on the outer end surface of the brake stator 3.
In an embodiment not shown in the figures, the motor further comprises a rotating shaft 5, the open end of the first bearing chamber 2 is provided with a cover plate, the rotating shaft 5 has a stop step 6, the outer ring of the rear bearing 1 is stopped on the cover plate, and the inner ring of the rear bearing 1 is stopped on the stop step 6. In this embodiment, since the outer ring of the rear bearing 1 can be stopped by the cover plate and the inner ring can be stopped by the stop step 6, the setting structure of the brake stator 3 is simplified without setting a shaft shoulder on the brake stator 3, and the opening of the first bearing chamber 2 can be arranged on one side close to the encoder assembly, so that the setting mode of the rear bearing 1 is more flexible, a proper setting mode can be selected according to the requirement, and the flexibility of the installation of the motor structure is improved.
The motor further comprises a connecting shaft end cover 8 and an encoder assembly, wherein the connecting shaft end cover 8 is fixedly connected to the brake, the encoder assembly comprises an encoder cover 9, and the encoder cover 9 is fixedly arranged on the connecting shaft end cover 8. The encoder assembly further comprises an encoder 18, the encoder 18 is fixedly arranged on the rotating shaft 5, the encoder cover 9 is covered outside the encoder 18 and is matched with the encoder 18, and the rotating speed of the motor is measured. Because the motor structure omits the rear bearing end cover, the connecting shaft end cover 8 can be directly fixed on the brake, so that the connecting shaft end cover 8 can be correspondingly made small, the distance between the connecting shaft end cover 8 and the brake winding 14 is further, the temperature of the encoder 18 is reduced, and the encoder 18 is not easy to damage.
The motor also comprises a shell 10, wherein the shell 10 is sleeved on the periphery of the brake and is in interference fit with the brake. In this embodiment, the outer diameter of the conventional brake stator 3 is increased, the outer diameter is slightly larger than the inner diameter of the housing 10 assembled with the conventional brake stator, the conventional brake stator and the housing are in interference fit, and the brake and the housing 10 are connected through a cold pressing procedure, so that the brake is in direct contact with air, and the temperature rise of the brake is reduced.
The motor further comprises a front end cover 11 and a front bearing 12, wherein a second bearing chamber 13 is arranged on the front end cover 11, and the front bearing 12 is arranged in the second bearing chamber 13.
The motor also comprises a motor stator 16 and a motor rotor 17, wherein the motor stator 16 is fixedly arranged on the front end cover 11, the motor rotor 17 is fixedly connected with the rotating shaft 5, when the motor stator 16 is electrified, electromagnetic acting force is applied to the motor rotor 17, the motor rotor 17 is driven to rotate, and the rotating shaft 5 is driven to rotate through the motor rotor 17.
When the motor is mounted, the brake gear 15 is first fixed to the rotating shaft 5 of the motor by gluing and keying the inside of the brake gear 15.
The brake stator 3 is then heated to a certain temperature, the rear bearing 1 is heat-fit into the first bearing chamber 2 of the brake stator 3 and cooled to room temperature.
Through stator frock, fixed motor rotor 17, with the leading-in of motor stator 16 slowly to through screw with motor stator 16 and front end housing 11 fixed connection.
The brake stator 3 with the rear bearing 1 is slowly pressed into the shell 10 by a press until the end face of the brake is leveled with the end face of the shell 10, so that the installation accuracy of the rear bearing 1 is ensured.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. The motor is characterized by comprising a rear bearing (1) and a brake, wherein a first bearing chamber (2) is arranged on the brake, and the rear bearing (1) is arranged in the first bearing chamber (2) in a limiting mode; the brake comprises a brake stator (3) and a brake winding (14), wherein the brake winding (14) is arranged in the brake stator (3), and the first bearing chamber (2) is arranged in the brake stator (3); the motor further comprises a shell (10), wherein the shell (10) is sleeved on the periphery of the brake stator (3) and is in interference fit with the brake stator (3); the brake comprises a brake end, and the end surface of the brake stator (3) facing away from the brake end is provided with a region which is in contact with air outside the motor.
2. An electric machine according to claim 1, characterized in that the brake stator (3) is fixedly provided with a bearing housing, which is provided with the first bearing chamber (2), the material of which is in accordance with the outer ring material of the rear bearing (1).
3. The electric machine according to claim 1, characterized in that the first bearing chamber (2) is open on the brake stator (3), the material of the brake stator (3) being the same as the outer ring material of the rear bearing (1).
4. The motor according to claim 1, characterized in that it further comprises a rotating shaft (5), on which a stop shoulder (4) is further provided, said rotating shaft (5) having a stop step (6), the outer ring of the rear bearing (1) being stopped on said stop shoulder (4), the inner ring of the rear bearing (1) being stopped on said stop step (6).
5. An electric machine according to claim 1, characterized in that the end of the brake remote from the braking end is provided with a heat sink rib (7).
6. The electric machine according to claim 1, characterized in that it further comprises a rotating shaft (5), the open end of the first bearing chamber (2) being provided with a cover plate, the rotating shaft (5) having a stop step (6), the outer ring of the rear bearing (1) being stopped on the cover plate, the inner ring of the rear bearing (1) being stopped on the stop step (6).
7. The electric machine according to any one of claims 1 to 6, characterized in that it further comprises a shaft cover (8) and an encoder assembly, the shaft cover (8) being fixedly connected to the brake, the encoder assembly comprising an encoder cover (9), the encoder cover (9) being fixedly arranged on the shaft cover (8).
8. The electric machine according to any one of claims 1 to 6, characterized in that it further comprises a front end cap (11) and a front bearing (12), the front end cap (11) being provided with a second bearing chamber (13), the front bearing (12) being arranged in the second bearing chamber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635960.3A CN108616195B (en) | 2018-06-20 | 2018-06-20 | Motor with a motor housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635960.3A CN108616195B (en) | 2018-06-20 | 2018-06-20 | Motor with a motor housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108616195A CN108616195A (en) | 2018-10-02 |
| CN108616195B true CN108616195B (en) | 2024-03-29 |
Family
ID=63665454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810635960.3A Active CN108616195B (en) | 2018-06-20 | 2018-06-20 | Motor with a motor housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108616195B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478513B (en) * | 2020-05-14 | 2022-04-08 | 南京欧陆电气股份有限公司 | Multifunctional enhanced integrated servo motor device |
| CN112072860B (en) * | 2020-08-06 | 2021-11-23 | 珠海格力电器股份有限公司 | Brake monitoring device, servo motor and servo motor control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254248Y (en) * | 1996-05-24 | 1997-05-14 | 陈水盛 | Pneumatic and hydraulic clutch brake motor |
| DE19818059A1 (en) * | 1998-04-22 | 1999-10-28 | Interelectric Ag Sachseln | Antifriction bearing for small electromotor |
| CN204179840U (en) * | 2014-08-12 | 2015-02-25 | 中国长江航运集团电机厂 | A kind of compact structure variable-frequency motor of built-in encoder |
| CN207304219U (en) * | 2017-08-18 | 2018-05-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor |
| CN208257596U (en) * | 2018-06-20 | 2018-12-18 | 珠海格力电器股份有限公司 | Motor |
-
2018
- 2018-06-20 CN CN201810635960.3A patent/CN108616195B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254248Y (en) * | 1996-05-24 | 1997-05-14 | 陈水盛 | Pneumatic and hydraulic clutch brake motor |
| DE19818059A1 (en) * | 1998-04-22 | 1999-10-28 | Interelectric Ag Sachseln | Antifriction bearing for small electromotor |
| CN204179840U (en) * | 2014-08-12 | 2015-02-25 | 中国长江航运集团电机厂 | A kind of compact structure variable-frequency motor of built-in encoder |
| CN207304219U (en) * | 2017-08-18 | 2018-05-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor |
| CN208257596U (en) * | 2018-06-20 | 2018-12-18 | 珠海格力电器股份有限公司 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108616195A (en) | 2018-10-02 |
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