CN206914419U - Pipe column type electric servo steering device - Google Patents
Pipe column type electric servo steering device Download PDFInfo
- Publication number
- CN206914419U CN206914419U CN201720395779.0U CN201720395779U CN206914419U CN 206914419 U CN206914419 U CN 206914419U CN 201720395779 U CN201720395779 U CN 201720395779U CN 206914419 U CN206914419 U CN 206914419U
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- motor
- bar
- cycloid
- shaft
- shaped trough
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Abstract
The utility model belongs to automobile technical field, is related to a kind of pipe column type electric servo steering device, including motor, motor output end connection reducing gear, it is characterised in that：Motor shaft be axially through hollow structure, motor shaft extended in reducing gear；The reducing gear includes rotating the hollow output shaft for being arranged at motor shaft output, steering wheel column is rotated and is arranged in motor shaft endoporus, linked with hollow output shaft steering wheel column lower end, motor shaft diameter of axle surface decentration portion tight fit sets clutch shaft bearing, cycloid disc is equipped with to be coordinated in clutch shaft bearing outer ring, the cycloid groove of hollow output shaft inner face with the cycloid groove of the side surface of cycloid disc one by the first steel ball；Motor bottom end face sets gradually one side slotted disk, gap adjusting pad, and decelerator shell is pressed on the adjusting pad of gap, and is fastenedly connected with motor.The transfer energy consumption is low, can effectively improve the stability of motor turning manipulation.
Description
Technical field
The utility model belongs to automobile technical field, is related to a kind of pipe column type electric servo steering device.
Background technology
In modern industry, reliable motor-drive technique is increasingly applied, and is widely used in machine tool numerical control system and automatic
Change in equipment.Electric drive, it is green, the control performances such as satisfied torque, position, speed can be obtained.Especially in garage
Industry, such as motor turning power-assisted.It is electric boosted increasingly perfect, gradually substitute traditional hydraulic power-assisted steering.
Electric boosted (EPS) compares hydraulic booster (HPS), and power consumption is lower.Have been widely used on low power consuming automobile, especially
It is pure electric automobile, and EPS is its optimal selection.The electric boosted operating physical force that can mitigate driver.It is electric boosted
(EPS) system can be made automobile to obtain satisfied power steering under various speed, changed by software (ECU) control
The stability of kind automobile operation.EPS is using vehicle power supply as the energy, as long as electric power is sufficient, you can produces power-assisted.
The content of the invention
The utility model is in view of the above-mentioned problems, provide a kind of pipe column type electric servo steering device, the transfer energy consumption
It is low, the stability of motor turning manipulation can be effectively improved.
According to the technical solution of the utility model：A kind of pipe column type electric servo steering device, including motor, motor output
End connection reducing gear, it is characterised in that：Motor shaft be axially through hollow structure, motor shaft extended in reducing gear；
The reducing gear includes rotating the hollow output shaft for being arranged at motor shaft output, and steering wheel column is rotated and is arranged in motor shaft
Kong Zhong, steering wheel column lower end are linked with hollow output shaft, and motor shaft diameter of axle surface decentration portion tight fit sets clutch shaft bearing, cycloid
Disk is equipped with to be passed through in clutch shaft bearing outer ring, the cycloid groove and the cycloid groove of the side surface of cycloid disc one of hollow output shaft inner face
First steel ball coordinates；Motor bottom end face sets gradually one side slotted disk, gap adjusting pad, and decelerator shell is pressed in gap adjustment
On pad, and it is fastenedly connected with motor, decelerator shell is supported axially through thrust bearing with hollow output shaft and is spaced, outside reductor
Shell and hollow output shaft radial through oil sealing sealing；In decelerator shell inner chamber, corresponding between one side slotted disk and cycloid disc
Two-sided slotted disk is set, and the bar-shaped trough of the two-sided slotted disk both side surface is respectively by the second steel ball and one side slotted disk, cycloid disc
Bar-shaped trough be engaged.
As further improvement of the utility model, self-lubricating set, self-lubricating set tight fit are arranged on the steering wheel column
In motor shaft endoporus.
As further improvement of the utility model, the steering wheel column is fixed by key or tensioning sleeve with hollow output shaft
Connection.
As further improvement of the utility model, the hollow output shaft rotates branch by second bearing and 3rd bearing
Support on motor shaft or hollow output shaft by a two-row ball bearing rotational support on motor shaft.
As further improvement of the utility model, the center line of the cycloid disc meets cycloid equation：
X=R*cos (t)+e*cos (N*t), Y=R*sin (t)-e*sin (N*t)；
The cycloid equation that the end face cycloid groove of hollow output shaft meets is：
X=R*cos (t)-e*cos (N*t), Y=R*sin (t)-e*sin (N*t),
Wherein X is the abscissa of certain point on curve, and Y is the ordinate of respective point,
N is the quantity of meshing point when internal and external cycloids engage,
E is eccentric throw, and t is the angle between any point and origin of coordinates line and X-axis on cycloid,
R is the base radius of generation cycloid；
Angle t span is 0 °~360 °, R=cycloid disc radius * (0.6~0.85), N=2* speed reducing ratio+1, e
Span be 0.5~3；Bar-shaped trough arrangement on two-sided slotted disk, cycloid disc and one side slotted disk is identical, wherein one side groove
Upper row's bar-shaped trough, lower row's bar-shaped trough, left column bar-shaped trough, right row bar-shaped trough are set respectively on disk, corresponding to through hole upper and lower ends, on
Both ends set two bar-shaped troughs respectively below row's bar-shaped trough, and lower row's bar-shaped trough top both ends set two bar-shaped troughs respectively, described
Upper row's bar-shaped trough, lower row's bar-shaped trough include four bar-shaped troughs, and left column bar-shaped trough, right row bar-shaped trough include three bar-shaped troughs；
The structure on two-sided slotted disk two sides differs 90 degree；The cycloid groove, the cross section of bar-shaped trough are circular arc, the circular arc and the first steel
Ball, the second steel ball are engaged.
As further improvement of the utility model, the decelerator shell, gap adjusting pad, one side slotted disk and motor it
Between be fastenedly connected by fixing bolt.
As further improvement of the utility model, the hollow output shaft lower end diameter of axle surface sets the first encoder,
First encoder passes through the spacing fixation of aluminium ring.
As further improvement of the utility model, the motor includes the machine winding being arranged in motor casing, motor
Rotor, which is sheathed on motor shaft, is placed in machine winding inner ring, and the rotor both ends pass through motor bearings one, motor respectively
Two spacing fixation of bearing, motor bearings two are installed on motor front end cover, and motor front end cover is fixedly connected on motor casing, motor
The upper surface of bearing one sets motor encoder, motor encoder and motor shaft synchronous axial system, and motor encoder outer ring sets elasticity
Pad, cushion one end are pressed in the outer ring of motor bearings one, and the other end is held out against on motor casing.
It is of the present utility model to have technical effect that：1) planetary steel ball reducing gear can (antiport will not with antiport
With locking as turbine worm reducer structure), it is meant that without arrangement of clutch so that mechanism reliability is more preferable.2) motor is with subtracting
Fast mechanism uses through hollow design, and steering column can be formed directly into.The structure of steering column, steering column intensity are not influenceed at all
Unaffected, manufacturing process is unaffected.Simultaneously can be without lifting an eyebrow be installed at present use HPS vehicle.3) motor with
Reducing gear integrated design, it is compact-sized, it is easy to arrangement and assembling, the processing of planetary steel ball reducing gear part is simple,
Cost is cheap.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of motor shaft in the utility model.
Fig. 3 is hollow output shaft inner face structural representation in the utility model.
Fig. 4 is the schematic diagram of two-sided slotted disk in the utility model.
Fig. 5 is Fig. 4 A-A sectional views.
Fig. 6 is Fig. 4 rearview.
Fig. 7 is the schematic diagram of one side slotted disk in the utility model.
Fig. 8 is Fig. 7 B-B sectional views.
Fig. 9 is use state diagram of the present utility model.
Embodiment
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
In Fig. 1, including hollow output shaft 1, the first encoder 2, decelerator shell 3, thrust bearing 4, clutch shaft bearing 5,
Two steel balls 6, one side slotted disk 7, fixing bolt 8, motor front end cover 9, machine winding 10, self-lubricating set 11, motor bearings 1,
Motor encoder 13, cushion 14, steering wheel column 15, motor shaft 16, rotor 17, motor bearings 2 18, gap adjusting pad
19th, two-sided slotted disk 20, cycloid disc 21, the first steel ball 22, second bearing 23, oil sealing 24,3rd bearing 25, aluminium ring 26, tensioning sleeve
27th, wheel 28, fixed support 29, eccentric part 30, end face cycloid groove 31 etc..
As shown in figure 1, the utility model is a kind of pipe column type electric servo steering device, including motor, motor output end
Connect reducing gear, motor shaft 16 be axially through hollow structure, motor shaft 16 extended in reducing gear；The reductor
Structure includes rotating the hollow output shaft 1 for being arranged at the output end of motor shaft 16, and steering wheel column 15 rotates and is arranged at the endoporus of motor shaft 16
In, the lower end of steering wheel column 15 is linked with hollow output shaft 1, and the tight fit of 16 diameter of axle surface decentration portion of motor shaft 30 sets clutch shaft bearing
5, cycloid disc 21 is equipped with the outer ring of clutch shaft bearing 5, cycloid groove and the side surface of cycloid disc 21 1 of the inner face of hollow output shaft 1
Cycloid groove coordinated by the first steel ball 22；Motor bottom end face sets gradually one side slotted disk 7, gap adjusting pad 19, reductor
Shell 3 is pressed on gap adjusting pad 19, and is fastenedly connected with motor, and decelerator shell 3 and hollow output shaft 1 are axially through pushing away
The support of power bearing 4 interval, decelerator shell 3 seal with hollow output shaft 1 radial through oil sealing 24；The inner chamber of decelerator shell 3
In, corresponding to setting two-sided slotted disk 20, the bar-shaped trough of the two-sided both side surface of slotted disk 20 between one side slotted disk 7 and cycloid disc 21
It is engaged respectively by the second steel ball 6 with the bar-shaped trough on one side slotted disk 7, cycloid disc 21.
Self-lubricating set 11 is arranged on steering wheel column 15, self-lubricating set 11 is tightly fitted in the endoporus of motor shaft 16.
Steering wheel column 15 is fixedly connected by key or tensioning sleeve 27 with hollow output shaft 1.
Hollow output shaft 1 is by second bearing 23 and the rotational support of 3rd bearing 25 on motor shaft 16 or hollow output
Axle 1 is by a two-row ball bearing rotational support on motor shaft 16.
The center line of cycloid disc 21 meets cycloid equation：
X=R*cos (t)+e*cos (N*t), Y=R*sin (t)-e*sin (N*t)；
The cycloid equation that the end face cycloid groove 31 of hollow output shaft 1 meets is：
X=R*cos (t)-e*cos (N*t), Y=R*sin (t)-e*sin (N*t),
Wherein X is the abscissa of certain point on curve, and Y is the ordinate of respective point,
N is the quantity of meshing point when internal and external cycloids engage,
E is eccentric throw, and t is the angle between any point and origin of coordinates line and X-axis on cycloid,
R is the base radius of generation cycloid；
Angle t span is 0 °~360 °, R=cycloid disc radius * (0.6~0.85), N=2* speed reducing ratio+1, e
Span be 0.5~3；
Bar-shaped trough arrangement on two-sided slotted disk 20, cycloid disc 21 and one side slotted disk 7 is identical, wherein on one side slotted disk 7,
Corresponding to through hole upper and lower ends, upper row's bar-shaped trough 7-1, lower row's bar-shaped trough 7-2, left column bar-shaped trough 7-3, right row bar shaped are set respectively
Both ends set two bar-shaped troughs respectively below groove 7-4, upper row's bar-shaped trough 7-1, and lower row's bar-shaped trough 7-2 tops both ends set two respectively
Individual bar-shaped trough, upper row's bar-shaped trough 7-1, lower row's bar-shaped trough 7-2 include four bar-shaped troughs, left column bar-shaped trough 7-3, right row bar
Shape groove 7-4 includes three bar-shaped troughs；The structure on the two-sided two sides of slotted disk 20 differs 90 degree；The cycloid groove, bar-shaped trough it is transversal
Face is circular arc, and the circular arc is engaged with the first steel ball 22, the second steel ball 6.
It is fastenedly connected between decelerator shell 3, gap adjusting pad 19, one side slotted disk 7 and motor by fixing bolt 8.
The first encoder 2 of the lower end diameter of axle surface of hollow output shaft 1 setting, the first encoder 2 are spacing solid by aluminium ring 26
It is fixed.
Motor includes the machine winding 10 being arranged in motor casing, and rotor 17 is sheathed on motor shaft 16 and is placed in electricity
The inner ring of machine winding 10, the both ends of rotor 17 pass through motor bearings 1,2 18 spacing fixation of motor bearings, motor respectively
Bearing 2 18 is installed on motor front end cover 9, and motor front end cover 9 is fixedly connected on motor casing, the upper surface of motor bearings 1
Motor encoder 13, motor encoder 13 and the synchronous axial system of motor shaft 16 are set, and the outer ring of motor encoder 13 sets cushion
14, the one end of cushion 14 is pressed in the outer ring of motor bearings 1, and the other end is held out against on motor casing.
The course of work of the present utility model is as follows：Clutch shaft bearing 5 is assemblied on motor shaft 16, while axle has one here
Eccentric amount e, eccentric cam motion can be formed.I.e. as the rotation of motor shaft 16, this bias promote clutch shaft bearing 5 to do eccentric return
Turn.Clutch shaft bearing 5 drives cycloid disc 21 to do eccentric revolution.Cycloid disc 21 moves the constraint by two-sided slotted disk 20, therefore cycloid disc 21
Do planet gyration motion.
The utility model product is suitable to the selection of Motor of steering wheel power-assisted：The power of motor is in 150w--350w, its output
Moment of torsion is in 1.5NM--3NM, motor speed 1000RPM--2000RPM (band idling speed).
Planetary steel ball reducing gear the curve of interference fit different parameters, can be set speed reducing ratio in coordinate size
Count into 1:10 to 1:20.So, the actual moment of torsion in reducing gear output shaft end is from minimum 15NM to 60NM.Rotating speed is in 100--
Between 200RPM.
First encoder 2 and motor encoder 13, according to demand for control, it can only use one of those.First encoder 2
It is to be mounted in motor shaft end in output end, motor encoder 13.
When in use, motor housing is connected by fixed support 29 with vehicle chassis.Wheel 28 is formed directly into planetary steel ball
The hollow shaft of reducing gear is simultaneously coupled output end.The moment of torsion of motor is amplified by ball planet reducing gear, direct drive
The vehicle of shaft.Avoid, using Double half axle difference driving moment, the transmission mechanism such as belt or gear, chain being saved.
The intensity for weakening wheel shaft is avoided, improves security.
Operation principle of the present utility model is as follows：When steering wheel column 15 is rotated by driver toward certain side, steering wheel column 15
The encoder 2 of hollow output shaft 1 and first is driven to rotate by the tensioner component of tensioning sleeve 27, now encoder provides steering wheel column 15
The direction of rotation and rate signal are to controller (ECU), the signal of controller (ECU) output control motor to motor, motor according to
Signal and program setting start to rotate like this, then eccentric shaft promotes clutch shaft bearing 5 and cycloid disc 21 to turn round, and this gyration is led to
Crossing the second steel ball 6 promotes hollow output shaft 1 to rotate.The output torque of so motor is amplified to be transmitted by key or tensioning sleeve 27
To steering wheel column 15, smoothly turn to.If the signal that no controller provides, motor is in holding state.Wait next signal.
Claims (8)
1. a kind of pipe column type electric servo steering device, including motor, motor output end connection reducing gear, it is characterised in that：
Motor shaft (16) be axially through hollow structure, motor shaft (16) extended in reducing gear；The reducing gear includes turning
The dynamic hollow output shaft (1) for being arranged at motor shaft (16) output end, steering wheel column (15) rotate and are arranged at motor shaft (16) endoporus
In, steering wheel column (15) lower end is linked with hollow output shaft (1), and motor shaft (16) diameter of axle surface decentration portion (30) tight fit is set
Clutch shaft bearing (5), cycloid disc (21) are equipped with clutch shaft bearing (5) outer ring, the cycloid groove of hollow output shaft (1) inner face with
The cycloid groove of the side surface of cycloid disc (21) one is coordinated by the first steel ball (22)；Motor bottom end face sets gradually one side slotted disk
(7), gap adjusting pad (19), decelerator shell (3) are pressed on gap adjusting pad (19), and are fastenedly connected with motor, slow down
Machine shell (3) is supported axially through thrust bearing (4) with hollow output shaft (1) and is spaced, decelerator shell (3) and hollow output shaft
(1) radial through oil sealing (24) seal；In decelerator shell (3) inner chamber, corresponding to one side slotted disk (7) and cycloid disc (21) it
Between two-sided slotted disk (20) is set, the bar-shaped trough of two-sided slotted disk (20) both side surface passes through the second steel ball (6) and one side respectively
Bar-shaped trough on slotted disk (7), cycloid disc (21) is engaged.
2. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：Covered on the steering wheel column (15)
If self-lubricating set (11), self-lubricating set (11) is tightly fitted in motor shaft (16) endoporus.
3. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：The steering wheel column (15) passes through
Key or tensioning sleeve (27) are fixedly connected with hollow output shaft (1).
4. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：The hollow output shaft (1) is logical
Second bearing (23) and 3rd bearing (25) rotational support are crossed on motor shaft (16) or hollow output shaft (1) is double by one
Row ball bearing rotational support is on motor shaft (16).
5. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：The center of the cycloid disc (21)
Line meets cycloid equation：
X=R*cos (t)+e*cos (N*t), Y=R*sin (t)-e*sin (N*t)；
The cycloid equation that the end face cycloid groove (31) of hollow output shaft (1) meets is：
X=R*cos (t)-e*cos (N*t), Y=R*sin (t)-e*sin (N*t)；
Wherein X is the abscissa of certain point on curve, and Y is the ordinate of respective point；
N is the quantity of meshing point when internal and external cycloids engage；
E is eccentric throw, and t is the angle between the line and X-axis of any point and the origin of coordinates on cycloid；
R is the base radius of generation cycloid；
Angle t span is 0 °~360 °, R=cycloid disc radius * (0.6~0.85), N=2* speed reducing ratio+1, e value
Scope is 0.5~3；
Bar-shaped trough arrangement on two-sided slotted disk (20), cycloid disc (21) and one side slotted disk (7) is identical, wherein one side slotted disk
(7) upper row's bar-shaped trough (7-1), lower row's bar-shaped trough (7-2), left column bar-shaped trough (7- are set respectively on, corresponding to through hole upper and lower ends
3), right row bar-shaped trough (7-4), upper row's bar-shaped trough (7-1) lower section both ends set two bar-shaped troughs, lower row's bar-shaped trough (7-2) respectively
Top both ends set two bar-shaped troughs respectively, and upper row's bar-shaped trough (7-1), lower row's bar-shaped trough (7-2) include four bar shapeds
Groove, left column bar-shaped trough (7-3), right row bar-shaped trough (7-4) include three bar-shaped troughs；The structure difference on two-sided slotted disk (20) two sides
90 degree；The cycloid groove, the cross section of bar-shaped trough are circular arc, and the circular arc and the first steel ball (22), the second steel ball (6) match
Close.
6. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：The decelerator shell (3),
Gap adjusting pad (19), one side slotted disk (7) are fastenedly connected between motor by fixing bolt (8).
7. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：Under the hollow output shaft (1)
Hold diameter of axle surface that the first encoder (2) is set, the first encoder (2) passes through aluminium ring (26) spacing fixation.
8. pipe column type electric servo steering device as claimed in claim 1, it is characterised in that：The motor includes being arranged at electricity
Machine winding (10) in casing, rotor (17), which is sheathed on motor shaft (16), is placed in machine winding (10) inner ring, institute
Rotor (17) both ends are stated respectively by motor bearings one (12), the spacing fixation of motor bearings two (18), motor bearings two
(18) it is installed on motor front end cover (9), motor front end cover (9) is fixedly connected on motor casing, motor bearings one (12) upper end
Face sets motor encoder (13), motor encoder (13) and motor shaft (16) synchronous axial system, and motor encoder (13) outer ring is set
Cushion (14) is put, cushion (14) one end is pressed in motor bearings one (12) outer ring, and the other end is held out against on motor casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720395779.0U CN206914419U (en) | 2017-04-14 | 2017-04-14 | Pipe column type electric servo steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720395779.0U CN206914419U (en) | 2017-04-14 | 2017-04-14 | Pipe column type electric servo steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206914419U true CN206914419U (en) | 2018-01-23 |
Family
ID=61305626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720395779.0U Expired - Fee Related CN206914419U (en) | 2017-04-14 | 2017-04-14 | Pipe column type electric servo steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206914419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864587A (en) * | 2017-04-14 | 2017-06-20 | 无锡市宝通流体设备有限公司 | Pipe column type electric servo steering device |
-
2017
- 2017-04-14 CN CN201720395779.0U patent/CN206914419U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864587A (en) * | 2017-04-14 | 2017-06-20 | 无锡市宝通流体设备有限公司 | Pipe column type electric servo steering device |
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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: 20180123 |