CN111204372A - Novel electric steering drive assembly with wire outlet structure - Google Patents
Novel electric steering drive assembly with wire outlet structure Download PDFInfo
- Publication number
- CN111204372A CN111204372A CN202010157740.1A CN202010157740A CN111204372A CN 111204372 A CN111204372 A CN 111204372A CN 202010157740 A CN202010157740 A CN 202010157740A CN 111204372 A CN111204372 A CN 111204372A
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- China
- Prior art keywords
- rotor
- stator
- pcb
- fixed
- drive assembly
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- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
- B62D5/0406—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box including housing for electronic control unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention provides a steering power-assisted electric drive assembly with a novel outgoing line structure, which comprises a rotor, a stator, tracking magnetic pole magnetic steel, a shell and a PCB (printed circuit board); the rotor is arranged in the stator, the bottom end of the rotor is fixed with tracking magnetic pole magnetic steel, the stator is fixed in the machine shell, and the bottom end of the machine shell is fixed with a PCB (printed circuit board); in the casing, there is a partition board between the PCB board and the stator, and the magnetic steel for tracking magnetic pole is between the partition board and the PCB board. One side of the PCB control board is fixed on the shell, and the other side of the PCB control board is sealed by the controller cover board and then integrated with the motor body into a whole, so that an independent installation space is not needed, the occupied space is smaller, and the part management and assembly cost is saved; in addition, the outgoing line of the motor body is directly led out by adopting an enameled wire, so that an installation support, a copper bar and the like are not needed, the number of parts is less, the weight is light, the manufacturing cost is lower, and the quality is more reliable.
Description
Technical Field
The invention relates to a steering power-assisted electric drive assembly with a novel outgoing line structure, and belongs to the field of electric drives.
Background
The automobile is an indispensable tool for people going out, goods transportation and the like, and along with the rapid development of the economic society, the automobile industry also has developed climax, but people have higher and higher requirements on the driving quality, the purchasing cost and the use cost of the automobile. The steering performance of an automobile is an important performance in the driving process of the automobile, an Electric Power Steering (EPS) system becomes a standard configuration of a modern automobile, a motor is used as a core component of the EPS system, and the performance of the whole EPS system is determined by the performance of the motor. At present, the EPS system has the requirements of small volume, light weight, high reliability, stable rotation and low manufacturing cost on the motor.
The existing EPS electric drive assembly has two problems, namely, a motor body and a controller are separately arranged, so that the occupied space is large, and the processing cost is high; and secondly, the three-phase outgoing line of the motor stator is installed by adopting a copper plate and a corresponding fixed support thereof, or the enameled wire rotates around the motor stator to a specified position to be led out, so that the structure is complex, the material consumption is large, and the manufacturing cost is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides the electric steering drive assembly with the novel wire outlet structure, which is easy to ensure the position degree, reliable in quality, convenient to install, small in occupied space, small in part number and low in manufacturing cost by integrating the motor and the controller into a whole.
The invention is realized by the following technical scheme.
The invention provides a steering power-assisted electric drive assembly with a novel outgoing line structure, which comprises a rotor, a stator, tracking magnetic pole magnetic steel, a shell and a PCB (printed circuit board); the rotor is arranged in the stator, the bottom end of the rotor is fixed with tracking magnetic pole magnetic steel, the stator is fixed in the machine shell, and the bottom end of the machine shell is fixed with a PCB (printed circuit board); in the casing, there is a partition board between the PCB board and the stator, and the magnetic steel for tracking magnetic pole is between the partition board and the PCB board.
The controller cover plate is fixed between the bottom plate of the shell and the PCB through an external bolt, and the PCB is sealed by the controller cover plate and the shell.
The tracking magnetic pole magnetic steel is fixed at the shaft tail end of the rotor through a magnetic pole bracket, and a Hall encoder is arranged on the PCB corresponding to the position of the shaft extension line.
The rotor comprises magnetic steel, a rotor core, a shaft and a coupling, the shaft penetrates through the rotor core to be fixed, the rotor core is in interference fit with the shaft, the magnetic steel is fixed on the rotor core through gluing, and a sheath ring is sleeved on the magnetic steel to be protected and fixed; the shaft coupling is fixed at the top end of the shaft by adopting a D-shaped structure, and the shaft coupling and the shaft are in radial interference fit.
The two end parts of the shaft are fixed on the stator through bearings, and the bearings are double-sided sealed deep groove ball bearings filled with lubricating grease.
The rotor is of a segmented oblique pole structure.
The stator comprises a stator core, slot insulation and a neutral point connecting wire, wherein the slot insulation is arranged in the stator core from the top end and the bottom end of the stator core, the neutral point end of the stator core is led out in a centralized mode through the neutral point connecting wire, an A-phase leading wire, a B-phase leading wire and a C-phase leading wire of the stator core are led out in parallel with the neutral point connecting wire, and the leading ends of the neutral point connecting wire, the A-phase leading wire, the B-phase leading wire and the C-phase leading wire are connected with the PCB in an inserting mode.
And the neutral line end of the stator core is concentrated to the neutral point connecting line through the enameled wire.
And a bearing of the rotor close to the bottom end is provided with a wave washer, and the wave washer is positioned between the bearing and the shell.
The invention has the beneficial effects that: one side of the PCB control panel is fixed on the shell, and the other side of the PCB control panel is sealed by the controller cover plate and then integrated with the motor body into a whole, so that an independent installation space is not needed, the occupied space is smaller, and the part management and assembly cost is saved; in addition, the outgoing line of the motor body is directly led out by adopting an enameled wire, so that an installation support, a copper bar and the like are not needed, the number of parts is less, the weight is light, the manufacturing cost is lower, and the quality is more reliable.
Drawings
FIG. 1 is a schematic sectional view of a rotor according to the present invention;
FIG. 2 is a schematic side view of the structure of FIG. 1;
FIG. 3 is a schematic view of the stator structure of the present invention;
fig. 4 is a schematic view of the self-contained structure of the present invention.
In the figure: 1-rotor, 2-stator, 3-external bolt, 4-controller cover plate, 5-locating pin, 6-magnetic pole bracket, 7-wave washer, 8-internal bolt, 9-tracking magnetic pole magnetic steel, 10-machine shell, 11-PCB board, 31-sheath, 32-magnetic steel, 33-rotor iron core, 34-shaft, 35-bearing, 36-end cover, 37-coupling, 21-stator iron core, 22-slot insulation, 23-neutral point connecting wire, 24-enameled wire, 25-A phase lead-out wire, 26-B phase lead-out wire and 27-C phase lead-out wire.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
The electric steering drive assembly with the novel outgoing line structure shown in fig. 1 to 4 comprises a rotor 1, a stator 2, a tracking magnetic pole magnetic steel 9, a casing 10 and a PCB 11; the rotor 1 is arranged in the stator 2, the bottom end of the rotor 1 is fixed with a tracking magnetic pole magnetic steel 9, the stator 2 is fixed in the casing 10, and the bottom end of the casing 10 is fixed with a PCB 11; in the casing 10, there is a partition plate located between the PCB 11 and the stator 2, and the tracking magnetic pole magnetic steel 9 is located between the partition plate and the PCB 11.
The controller cover plate 4 is fixed between the bottom plate of the machine shell 10 and the PCB 11 through the outer bolt 3, and the PCB 11 is sealed by the controller cover plate 4 and the machine shell 10.
The tracking magnetic pole magnetic steel 9 is fixed at the tail end of the shaft 34 of the rotor 1 through the magnetic pole bracket 6, and the Hall encoder is arranged on the PCB 11 corresponding to the position of the extension line of the shaft 34.
The rotor 1 comprises magnetic steel 32, a rotor core 33, a shaft 34 and a coupling 37, the shaft 34 penetrates through the rotor core 33 to be fixed, the rotor core 33 and the shaft 34 are in interference fit, the magnetic steel 32 is fixed on the rotor core 33 through gluing, and a sheath 31 is sleeved on the magnetic steel 32 to be protected and fixed; the coupling 37 is fixed on the top end of the shaft 34 by adopting a D-shaped structure, and the coupling 37 is in interference fit with the shaft 34 in the radial direction.
Both ends of the shaft 34 are fixed to the stator 2 by bearings 35, and the bearings 35 are double-sealed deep groove ball bearings filled with grease.
The rotor 1 is of a segmented skewed pole structure.
The stator 2 comprises a stator core 21, slot insulators 22 and a neutral point connecting wire 23, wherein the slot insulators 22 are installed into the stator core 21 from the top end and the bottom end of the stator core 21, the neutral point end of the stator core 21 is led out in a centralized mode through the neutral point connecting wire 23, phase A outgoing wires 25, phase B outgoing wires 26 and phase C outgoing wires 27 of the stator core 21 are led out in parallel with the neutral point connecting wire 23, and the outgoing ends of the neutral point connecting wire 23, the phase A outgoing wires 25, the phase B outgoing wires 26 and the phase C outgoing wires 27 are connected to the PCB 11 in an inserting mode.
The neutral terminal of the stator core 21 is concentrated to the neutral point connection line 23 by the enamel wire 24.
The wave washer 7 is arranged on a bearing 35 near the bottom end of the rotor 1, and the wave washer 7 is positioned between the bearing 35 and the casing 10.
Specifically, the rotor core 33 and the shaft 34 are in interference fit, and the rotor core 33 is axially positioned by a step on the shaft 34; the magnetic steel 32 is fixed on the surface of the rotor core 33 by gluing, and is finally protected and fixed by the sheath 31; the bearing 35 hole adopts interference fit with axle 34, and the bearing 35 quantity is 2, supports rotor 1 both ends respectively, and one end is packed into the bearing room that casing 10 corresponds, and one end is packed into the bearing room that end cover 36 corresponds.
The coupling 37 is used for connecting the motor and the steering mechanism, and the coupling 37 and the shaft 34 adopt a D-shaped structure and are in interference fit in the radial direction.
The bearing 35 is a deep groove ball bearing with two sealed sides, and lubricating grease is filled inside the bearing to realize self-lubrication.
In order to reduce the cogging torque, the rotor adopts a segmented oblique pole structure, and the magnetic steel 32 adopts 'steamed bread type' magnetic steel.
In order to ensure the temperature-resistant grade and the motor performance, the magnetic steel 32 is made of sintered neodymium iron boron.
In order to improve the performance and the coil inserting manufacturability of the motor, the stator iron core 21 adopts a segmented splicing structure.
The slot insulation 22 is formed by injection molding, and is divided into an upper interface and a lower interface which are respectively installed from two ends of the stator core.
In order to reduce cogging torque, the inner hole of the stator core 21 generally adopts an eccentric structure, and a mode of opening auxiliary slots on concentric circles and the like can also be adopted.
The neutral connection line 23 connects the neutral terminals of the three-phase windings all together through the enamel wire 24.
The A-phase leading-out wire 25, the B-phase leading-out wire 26 and the C-phase leading-out wire 27 are respectively three, the number of parallel branches of the motor is 3, and three phase wires are respectively led out to the PCB 11.
The rotor 1 and the stator 2 are arranged in the casing 10, and the stator iron core 21 and the casing 10 are in interference fit. A wave washer 7 is arranged between the bearing 35 at the lower end of the rotor 1 and the shell 10, so that the vibration of the rotor 1 during high-speed rotation is reduced; the tail end (namely the bottom end) of a shaft 34 of the rotor 1 is provided with a tracking magnetic pole magnetic steel 9, the middle part is supported by a tracking magnetic pole bracket 6, and a Hall encoder is arranged at the position of the same central line in a PCB 11 and used for detecting the position of a motor rotor and facilitating the control of a motor.
The end cover 36 is connected with the casing 10 through bolts, and the end cover 36 and the casing 10 are positioned by adopting a spigot. The PCB 11 and the shell 10 are positioned by adopting a positioning pin 5 and then fixed by an inner bolt 8, three of an A-phase leading-out wire 25, a B-phase leading-out wire 26 and a C-phase leading-out wire 27 correspond to holes on the PCB 11, and the PCB 11 connects wires in the same phase into a whole when a circuit is designed; and finally, the controller cover plate 4 is used for sealing, and the controller cover plate 4 and the machine shell 10 are connected and fixed by adopting an external bolt 3.
The tracking magnetic pole magnetic steel 9 is fixed at the tail end of the shaft 34 through a mounting magnetic pole bracket 6, and the purpose is to detect the position signal of the motor rotor and feed the position signal back to the PCB 11 for controlling the motor to run.
Therefore, the PCB control panel of the controller is integrally installed in the motor shell, and the three-phase outgoing lines of the motor body are directly connected with the PCB through respective enameled wires, so that the integrated level is high, the occupied space is small, the installation process is simpler, and the manufacturing cost is lower.
Claims (9)
1. The utility model provides a novel electric drive assembly of power assisted steering of outlet structure, includes rotor (1), stator (2), tracking magnetic pole magnet steel (9), casing (10), PCB board (11), its characterized in that: the rotor (1) is arranged in the stator (2), the bottom end of the rotor (1) is fixedly provided with tracking magnetic pole magnetic steel (9), the stator (2) is fixedly arranged in the machine shell (10), and the bottom end of the machine shell (10) is fixedly provided with a PCB (11); in the casing (10), a separation plate is arranged between the PCB (11) and the stator (2), and the tracking magnetic pole magnetic steel (9) is arranged between the separation plate and the PCB (11).
2. The novel wire outlet structure power-assisted steering electric drive assembly as claimed in claim 1, wherein: the controller is characterized by further comprising a controller cover plate (4), the controller cover plate (4) is fixed between the bottom plate of the machine shell (10) and the PCB (11) through an external bolt (3), and the controller cover plate (4) and the machine shell (10) seal the PCB (11).
3. The novel wire outlet structure power-assisted steering electric drive assembly as claimed in claim 1, wherein: the tracking magnetic pole magnetic steel (9) is fixed at the tail end of a shaft (34) of the rotor (1) through a magnetic pole bracket (6), and a Hall encoder is arranged on the PCB (11) corresponding to the position of the extension line of the shaft (34).
4. The novel wire outlet structure power-assisted steering electric drive assembly as claimed in claim 1, wherein: the rotor (1) comprises magnetic steel (32), a rotor core (33), a shaft (34) and a shaft coupling (37), the shaft (34) penetrates through the rotor core (33) to be fixed, the rotor core (33) and the shaft (34) are in interference fit, the magnetic steel (32) is fixed on the rotor core (33) through gluing, and a sheath (31) is sleeved on the magnetic steel (32) in a sleeved mode and is protected and fixed; the coupling (37) is fixed at the top end of the shaft (34) by adopting a D-shaped structure, and the coupling (37) is in interference fit with the shaft (34) in the radial direction.
5. The novel outlet structure electric steering drive assembly according to claim 4, wherein: the two ends of the shaft (34) are fixed on the stator (2) through bearings (35), and the bearings (35) are double-face sealed deep groove ball bearings filled with lubricating grease.
6. The novel wire outlet structure power-assisted steering electric drive assembly as claimed in claim 1, wherein: the rotor (1) is of a segmented oblique pole structure.
7. The novel wire outlet structure power-assisted steering electric drive assembly as claimed in claim 1, wherein: the stator (2) comprises a stator core (21), slot insulators (22) and a neutral point connecting line (23), the slot insulators (22) are installed into the stator core (21) from the top end and the bottom end of the stator core (21), the neutral line end of the stator core (21) is led out in a concentrated mode through the neutral point connecting line (23), an A-phase leading-out line (25), a B-phase leading-out line (26) and a C-phase leading-out line (27) of the stator core (21) are led out in parallel with the neutral point connecting line (23), and leading-out ends of the neutral point connecting line (23), the A-phase leading-out line (25), the B-phase leading-out line (26) and the C-phase leading-out line (27) are connected to.
8. The novel wire outlet structure power-assisted steering electric drive assembly as claimed in claim 1, wherein: the neutral line end of the stator core (21) is concentrated to a neutral point connecting line (23) through an enameled wire (24).
9. The novel outlet structure electric steering drive assembly according to claim 5, wherein: the rotor (1) is provided with a wave washer (7) on a bearing (35) close to the bottom end, and the wave washer (7) is positioned between the bearing (35) and the machine shell (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157740.1A CN111204372A (en) | 2020-03-09 | 2020-03-09 | Novel electric steering drive assembly with wire outlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157740.1A CN111204372A (en) | 2020-03-09 | 2020-03-09 | Novel electric steering drive assembly with wire outlet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111204372A true CN111204372A (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010157740.1A Pending CN111204372A (en) | 2020-03-09 | 2020-03-09 | Novel electric steering drive assembly with wire outlet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111204372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688467A (en) * | 2020-12-24 | 2021-04-20 | 湖北恒高电子有限公司 | Miniature flat vibrating motor |
| CN114889689A (en) * | 2022-05-13 | 2022-08-12 | 一汽解放青岛汽车有限公司 | Steering device and arrangement scheme thereof |
-
2020
- 2020-03-09 CN CN202010157740.1A patent/CN111204372A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688467A (en) * | 2020-12-24 | 2021-04-20 | 湖北恒高电子有限公司 | Miniature flat vibrating motor |
| CN114889689A (en) * | 2022-05-13 | 2022-08-12 | 一汽解放青岛汽车有限公司 | Steering device and arrangement scheme thereof |
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