CN105691446A - Steering tube type electric power assisting device - Google Patents
Steering tube type electric power assisting device Download PDFInfo
- Publication number
- CN105691446A CN105691446A CN201610161446.1A CN201610161446A CN105691446A CN 105691446 A CN105691446 A CN 105691446A CN 201610161446 A CN201610161446 A CN 201610161446A CN 105691446 A CN105691446 A CN 105691446A
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- China
- Prior art keywords
- output shaft
- planetary reducer
- quill
- housing
- shaft
- 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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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
- B62D5/0409—Electric motor acting on the steering column
- B62D5/0412—Electric motor acting on the steering column the axes of motor and steering column being parallel
- B62D5/0415—Electric motor acting on the steering column the axes of motor and steering column being parallel the axes being coaxial
-
- 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
- B62D5/0442—Conversion of rotational into longitudinal movement
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
A steering tube type electric power assisting device comprises a shell. A planetary gear reducer is mounted at one end of the shell. A transverse partition board is arranged in the shell. A hollow internal rotor brushless motor is mounted in the shell and located between the transverse partition board and the planetary gear reducer. A coil stator of the hollow internal rotor brushless motor is connected with the inner wall of the shell. A shaft sleeve is arranged in a center inner hole of a magnetic steel rotor of the hollow internal rotor brushless motor. The shaft sleeve is fixedly mounted on a sleeve shaft. One end of the sleeve shaft is connected with the transverse partition board of the shell through a first location bearing. According to the steering tube type electric power assisting device, the hollow internal rotor brushless motor and the planetary gear reducer are arranged coaxially with a steering tube, so that the steering tube type electric power assisting device occupies small space, does not interfere with peripheral components, can be easily arranged on a car and is easy and convenient to dismount, mount and operate. During motor running, torque of the motor is amplified through the planetary gear reducer, and the rotational speed of the motor is decreased through the planetary gear reducer, so that the effect of power assistance is achieved. The mechanical transmission efficiency is substantially improved, and the steering tube type electric power assisting device can make steering operation of the car more flexible, easier, more stably and the like.
Description
Technical field
The present invention relates to a kind of auto steerer, specifically a kind of steering tube pillar electric booster。
Background technology
The electric turning booster system used on current various vehicle is mostly installed worm and gear speed-reduction apparatus on steering column and is realized, and this class formation is limit by own dimensions, and gear ratio is relatively low, and transmission efficiency is relatively low, directly affects the size of output moment of torsion。Owing to needs and external motor are installed along with the side of steering column, take up room bigger, owing to being dispersed with multiple assembly, parts under vehicle instrument desk, therefore the steering column of existing vehicle often interferes when assembling, maintenance with circumferential component, and installation and removal operation easier is bigger。
Summary of the invention
It is an object of the invention to provide a kind of Novel steering column formula electric booster, it can solve the problem that prior art Problems existing。
The present invention is for achieving the above object, it is achieved through the following technical solutions: include housing, diaphragm plate is set in housing, sensor is installed between diaphragm plate and upper cover, the housing other end installs planetary reducer, installs hollow type inner-rotor brushless motor in the housing between diaphragm plate and planetary reducer。The coil stator of hollow type inner-rotor brushless motor is connected with inner walls, the magnetic steel rotor of hollow type inner-rotor brushless motor is arranged on axle sleeve, axle sleeve is fixedly mounted on quill, quill one end is located by connecting by the first diaphragm plate positioning bearing and housing, the quill other end positions bearing by second and is located by connecting with planetary reducer, the end of quill arranges external gear, external gear is meshed with the planetary gear of planetary reducer input, output shaft is installed in quill, output shaft one end needle bearing is positioned inside quill one end, the output shaft other end is connected with the output terminal link of planetary reducer, and support with lower cover output end ball bearing location。Installing upper cover on the housing of power shaft one end, positioned bearing by first and be arranged on the needle bearing location support of the power shaft other end, power shaft is connected with the steering spindle of vehicle steering column。Installing torsion bar and moment angular transducer between power shaft and output shaft, torsion bar one end is fixing with power shaft to be connected, and the torsion bar other end is fixing with output shaft to be connected。Installation site sensor between magnetic steel rotor and the planetary reducer overcoat of described hollow type inner-rotor brushless motor。Described position sensor is incremental encoder formula position sensor, double; two magnet rings of incremental encoder formula position sensor are with the magnetic steel rotor synchronous axial system of hollow type inner-rotor brushless motor, and the sensor circuit plate of incremental encoder formula position sensor is fixing with planetary reducer overcoat end to be connected。Double; two magnet rings of described incremental encoder formula position sensor are pasted onto a pushing out ring end face, the hole propping up pushing out ring is press-fitted on quill, pushing out ring arranges circular fold away from one end of magnetic steel rotor, and double; two magnet rings of incremental encoder formula position sensor are pasted onto on circular fold with one heart and together rotate with the magnetic steel rotor of hollow type inner-rotor brushless motor。Housing arranges lower cover away from one end of upper cover, and planetary reducer is fixedly mounted in decelerator overcoat, and lower cover is connected with housing。
It is an advantage of the current invention that: adopt the inner-rotor brushless motor of hollow and planetary reducer and steering column coaxially arranged, take up room little, will not interfere with peripheral parts, it is prone on automobile and arranges, and remove and install easy and simple to handle, the action of motor is by planetary reducer torque multiplication and reduces rotating speed, plays power steering effect。Compared with existing electric booster, machinery driving efficiency is increased dramatically, and output moment of torsion increases, it is possible to what make vehicle turns to operation more flexible, light, and stability is higher。
Accompanying drawing explanation
Fig. 1 is handpiece structure schematic diagram of the present invention；
Fig. 2 is the integral electric column assy schematic diagram that the present invention is applied on automobile；
Fig. 3 is the present invention is the relative rotation angle between restriction output shaft and power shaft, adopts the structural representation of flat recess double inclined surface structure；
Fig. 4 is the present invention is the relative rotation angle between restriction output shaft and power shaft, adopts the structural representation of four groove structures；
Fig. 5 is the present invention is the relative rotation angle between restriction output shaft and power shaft, adopts the structural representation of six groove structures。
Detailed description of the invention
A kind of Novel steering column formula electric booster of the present invention includes housing 1, housing 1 and diaphragm plate one, housing 1 diaphragm plate power shaft 7 side mounting torque angular transducer 12, hollow type inner-rotor brushless motor is installed at middle part, and planetary reducer 8 is installed in housing 1 output shaft 11 side。The coil stator 2 of hollow type inner-rotor brushless motor is fixing with housing 1 inwall to be connected, its magnetic steel rotor 3 is fixedly mounted on outside axle sleeve 4, axle sleeve 4 is fixedly mounted on quill 5, quill 5 one end is connected with diaphragm plate by the second location bearing 22, quill 5 other end is located by connecting with planetary reducer 8 by the 3rd location bearing 23 and is connected, the lower end of quill 5 is namely as the power shaft of planetary reducer 8, the processing of quill 5 end has external toothing, external toothing is meshed with the planetary gear of planetary reducer 8 input, output shaft 11 is installed in quill 5, support is positioned by needle bearing 16 and the 4th location bearing 24 respectively between output shaft 11 two ends and quill 5。Output shaft 11 is connected with the output terminal link of planetary reducer 8。Power shaft 7 is positioned support by the first needle bearing 16 positioning bearing 21 and the power shaft other end, and the housing 1 of power shaft 7 input is provided with upper cover 6, and upper cover 6 is connected with housing 1 seam。Power shaft 7 can be connected with the steering spindle of vehicle steering column, installs torsion bar 10 and moment angular transducer 12 between power shaft 7 and output shaft 11, and torsion bar 10 one end is fixing with power shaft 7 to be connected, and torsion bar 10 other end is fixing with output shaft 11 to be connected。Hollow type inner-rotor brushless motor and planetary reducer 8 are all hollow, and output shaft 11 can pass from centre。Quill 5 outfan is exactly the input of planetary reducer 8。The outfan planet carrier endoporus of planetary reducer can be connected by key is fixing with output shaft 11, to ensure the reliability that output shaft 11 high pulling torque exports。Being provided with lower cover 6 on the housing 1 of output shaft 11 outfan, upper cover 6 is connected with housing 1 seam。
The hollow type inner-rotor brushless motor that the present invention uses is to have employed inner-rotor-type brushless electric machine structure, and the stator of hollow type inner-rotor brushless motor is coil, and itself and column casing inwall are fixedly linked and are integrated。The rotor of hollow type inner-rotor brushless motor is that a circle tile-shaped magnet steel group, tile-shaped magnet steel group are fixed on a cylindrical shape axle sleeve 4, and axle sleeve 4 is fixed on quill 5。
Moment angular transducer 12 of the present invention can adopt contactless EPS sensor to may be used without contact EPS sensor, moment angular transducer 12 is mainly used in transmitting the signal of steering wheel rotation torque signal and wheel steering angle to controller (ECU), makes controller (ECU) control motor and realizes electric steering column formula power-assisted steering。Torsion bar two ends, torsion bar 10 two ends of the present invention can all adopt straight pin to fix with power shaft 7 and output shaft 11, it is possible in the cup-shaped hole of one end spline press-in output shaft 11, the other end is fixed with power shaft 7 by straight pin。
Power assisting device of the present invention can be fabricated to independent booster engine head unit, power shaft 7 and output shaft 11 and be connected respectively through the universal joint steering spindle with steering wheel for vehicle and lower drive shaft。Also integral electric column assy can be fabricated to, namely traditional steering column and head power assisting device are designed to one, described power shaft 7 upper end is directly connected with steering wheel for vehicle by steering spindle, and described output shaft 11 is directly connected with the machine input that turns to of vehicle by lower drive shaft assembly。During Vehicular turn, driver turn steering wheel band driven input shaft 7 rotates, power shaft 7 drives torsion bar 10 one end to rotate, the torsion bar other end can not rotate, make torsion bar 10 torsional deflection, torsion bar 10 is produced torsional deflection by moment angular transducer 12, sensor is made to generate moment and angular output signal, it is converted into the signal of telecommunication and sends to controller (ECU), controller (ECU) sends instruction according to this signal to hollow type inner-rotor brushless motor, drives hollow type inner-rotor brushless motor to rotate to the direction of rotation power-assisted of steering wheel。Now magnetic steel rotor 3 drives quill 5 to rotate, the moment of torsion that quill 5 is rotated by planetary reducer 8 passes to output shaft 11 after amplifying, planetary reducer 8 can reach increase output torque and drop slow-revving effect by internal two-stage speed change, improves transmission efficiency simultaneously。In the present invention, motor and steering column are coaxially disposed, take up room little, will not interfering with peripheral parts, remove and install easy and simple to handle, planetary reducer 8 torque multiplication is passed through in the action of motor, compared with existing electric booster, machinery driving efficiency is increased dramatically, it is possible to what make vehicle turns to operation more flexible, light, and stability is higher, increase output moment of torsion, it is possible to the active realizing steering mechanism is just returned。The installation site of power assisting device of the present invention is consistent with existing vehicle, do not need to change vehicle steering machine structure, and power assisting device is arranged in driving cabin, have employed brushless electric machine, decrease the impact of electromagnetic compatibility, not affected by environment, failure rate is low, long service life, same size size, output torque is big。
The present invention adopts planetary reducer can realize output shaft and is coaxially disposed with tubing string, identical with the installation site of output shaft in traditional steering column, can directly replace existing steering column product, not need other parts of vehicle are transformed。The planetary reducer 8 used in the present invention can adopt multiple existing planetary reducer structure, for instance dual planetary gear decelerator, planet gear speed reducer with small tooth difference etc.。Certain present invention may be used without the reducing gear of other form and carrys out the increase moment of torsion of the spinning movement to quill 5, but other reducing gear is difficult to output shaft on the one hand to be co-axially mounted with tubing string, own vol is also all higher than planetary reducer on the other hand, though therefore the planetary reducer in the present invention can use other type of reducing gear to replace, but result of use can be had a greatly reduced quality。First location bearing 22 of the present invention and the second location bearing 23 can pass through back-up ring or other connector and realize axial location with quill 5。This structure supports for quill 5 is formed, and prevents quill 5 from moving axially, it is ensured that the internal each parts of transfer are accurately positioned, and will not the detection data of each sensor be impacted。During vehicle assembling, the controller integration being used for receiving sensor signal and control brushless electric machine action can be arranged on housing 1, it is possible to be independently fixed on by sensor on other parts of vehicle。
The present invention is in order to position the magnetic steel rotor 3 of hollow type inner-rotor brushless motor, implement to control thus realizing the operating condition to hollow type inner-rotor brushless motor, installation site sensor between magnetic steel rotor 3 end face and the overcoat end face of planetary reducer 8 of described hollow type inner-rotor brushless motor, including a pushing out ring 14, is pasted onto double; two magnet rings 13 of pushing out ring end face, a sensor circuit plate 15。The turned position of monitoring magnetic steel rotor 3 can be carried out monitor in real time by position sensor, thus realizing the controller (ECU) control to electric machine rotation。Position sensor 13 of the present invention can adopt polytype position sensors such as incremental encoder formula position sensor, Rotary transformer type position sensor, photoelectric position sensor, wherein preferred structure is incremental encoder formula position sensor, and this incremental encoder formula position sensor is particularly suitable for centre the structure of axis。This pair of magnet ring is by magnetic steel rotor 3 synchronous axial system with hollow type inner-rotor brushless motor, and the sensor circuit plate of incremental encoder formula position sensor and the overcoat end face of planetary reducer 8 are fixed。The advantage of incremental encoder formula position sensor is self to have hollow type structure, it is simple to directly fixedly mount on quill, and its cost is also minimum relative to the position sensor of other structure。The present invention in order to increase the radius of double; two magnet ring as far as possible when installation site is limited, detection signal more accurately this structure making incremental encoder formula position sensor can also make double; two magnet ring 13 away from the magnetic links of magnetic steel rotor 3, it is to avoid incremental encoder formula position sensor is subject to magnetic interference。
The present invention be restriction output shaft 11 and power shaft 7 between relative rotation angle be maintained at designing requirement ± 5 ~ 8 ° between, have employed flat recess double inclined surface structure。Except above-mentioned flat recess double inclined surface structure, the present invention also can adopt similar four grooves, six grooves and the various structures such as the spline corner gap to limit between power shaft 11 and power shaft 7 with gap, but these structures may increase the installation difficulty of other parts and procedure of processing relative complex。These structures are all well-known structures。
Planetary reducer 8 of the present invention can adopt various structures to be connected with housing 1, for instance may be mounted at housing outfan, it is also possible to be arranged in lower cover；Wherein preferred structure is: planetary reducer 8 is fixedly mounted in housing outfan, and housing 1 arranges lower cover 9 away from one end of upper cover 6, and lower cover 9 is connected by bolt or other connector with housing 1。This structure does not need the shell mechanism of existing planetary reducer 8 assembly product is transformed; low production cost; and planetary reducer 8 can be played location and protective effect by lower cover 9, it is prevented that in steering column installation or removal process, planetary reducer 8 and other parts of vehicle collide with and impaired。
Figure 18 is moment angular transducer plug, 19 is brushless electric machine plug, 20 is position sensor plug, during vehicle assembling, square angular transducer plug, brushless electric machine plug and position sensor plug are connected each through the wire controller ECU with vehicle and vehicle power supply。
Figure 28 is steering column, 26 is lower drive shaft。
Claims (9)
1. a steering tube pillar electric booster, it is characterized in that: include housing (1), housing (1) and diaphragm plate one, mounting torque angular transducer (12) between upper cover and housing (1) diaphragm plate, middle installation hollow type inner-rotor brushless motor, planetary reducer (8) is installed in housing (1) output shaft side；The coil stator (2) of hollow type inner-rotor brushless motor is fixing with housing (1) inwall to be connected, its magnetic steel rotor (3) is fixed on axle sleeve (4), and axle sleeve (4) is fixedly mounted on quill (5)；Quill (5) one end positions bearing (22) by second and is located by connecting with diaphragm plate, quill (5) other end is located by connecting with planetary reducer (8) by the 3rd location bearing (23), the other end of quill (5) is namely as the power shaft of planetary reducer (8), the processing of its end has external tooth, and external tooth engages with the planetary gear of planetary reducer (8) input；Output shaft (11) is installed in quill (5), being supported by needle bearing (16) and the 4th location, location bearing (24) respectively between output shaft (11) two ends and quill (5), output shaft (11) is connected with the output terminal link of planetary reducer (8)；Power shaft (7) is supported by the first needle bearing (16) location positioning bearing (21) and power shaft opposite side, the housing (1) of power shaft (7) one end installs upper cover (6), upper cover (6) is connected with housing (1) seam, power shaft (7) can be connected with the steering spindle of vehicle steering column, torsion bar (10) and moment angular transducer (12) are installed between power shaft (7) and output shaft (11), torsion bar (10) one end is fixing with power shaft (7) to be connected, torsion bar (10) other end is fixing with output shaft (11) to be connected, hollow type inner-rotor brushless motor and planetary reducer (8) are all hollow, output shaft (11) can pass from centre, quill (5) outfan is exactly the input of planetary reducer (8), the processing of quill (5) outfan has external tooth directly to drive planetary reducer to work, the outfan planet carrier endoporus of planetary reducer can pass through key and be connected with output shaft (11), to ensure the reliability of high pulling torque that output shaft exports, the housing (1) of output shaft (11) one end installs lower cover (25), lower cover (25) is connected with housing (1) seam, and the overcoat of fixing planetary reducer。
2. a kind of steering tube pillar electric booster according to claim 1, it is characterised in that: installation site sensor (double; two magnet rings 13, pushing out ring 14, sensor circuit plate 15) between magnetic steel rotor (3) and the planetary reducer (8) of described hollow type inner-rotor brushless motor。
3. a kind of steering tube pillar electric booster according to claim 2, it is characterized in that: described position sensor is incremental encoder formula position sensor, double; two magnet rings (13) of incremental encoder formula position sensor and a pushing out ring (14) are with magnetic steel rotor (3) synchronous axial system of hollow type inner-rotor brushless motor, and the sensor circuit plate of incremental encoder formula position sensor is fixed with the end face of planetary reducer (8) and is connected。
4. a kind of steering tube pillar electric booster according to claim 3, it is characterized in that: double; two magnet rings (13) of described incremental encoder formula position sensor are connected with quill (5) by a pushing out ring (14), pushing out ring (14) has a circular fold away from one end of magnetic steel rotor (3), double; two magnet rings (13) of incremental encoder formula position sensor are bonded on circular fold with one heart, and this pair of magnet ring together rotates with the magnetic steel rotor (3) of hollow type inner-rotor brushless motor。
5. a kind of steering tube pillar electric booster according to claim 1, it is characterized in that: described output shaft (11) arranges shrinkage pool near one end of steering spindle (7), this shrinkage pool can be yi word pattern groove, cross recess, six word grooves, corresponding boss is had to be inserted therein in power shaft end, ensure that mutual left and right directions two produces the gap of 5～8 °, output shaft shrinkage pool medial wall and installation needle bearing (17) between cylinder outside power shaft boss。
6. a kind of steering tube pillar electric booster according to claim 5, it is characterized in that: the coil stator (2) of hollow type inner-rotor brushless motor is fixing with housing (1) inwall to be connected, its magnetic steel rotor (3) is fixed on axle sleeve (4), axle sleeve (4) is fixedly mounted on quill (5), quill (5) one end is connected with diaphragm plate by the second location bearing (22), and quill (5) other end is located by connecting with planetary reducer (8) by the 3rd location bearing (23)。
7. a kind of steering tube pillar electric booster according to claim 5, it is characterized in that: the other end of quill (5) is namely as the power shaft of planetary reducer (8), the processing of this end has external tooth, external tooth engages with the planetary gear of planetary reducer (8) input, output shaft (11) is installed in quill (5), supported by needle bearing (16) and the 4th location, location bearing (24) respectively between output shaft (11) two ends and quill (5), output shaft (11) is connected with the output terminal link of planetary reducer (8), power shaft (7) is by the first location bearing (21) in upper cover and needle bearing (16) the location support being arranged on output shaft endoporus, the housing (1) of power shaft (7) one end installs upper cover (6), upper cover (6) is connected with housing (1) seam。
8. a kind of steering tube pillar electric booster according to claim 1, it is characterized in that: power shaft (7) can be connected with the steering spindle of vehicle steering column, torsion bar (10) and moment angular transducer (12) are installed between power shaft (7) and output shaft (11), torsion bar (10) one end is fixing with power shaft (7) to be connected, torsion bar (10) other end is fixing with output shaft (11) to be connected, hollow type inner-rotor brushless motor and planetary reducer (8) are all hollow, output shaft (11) can pass from centre, quill (5) outfan is exactly the input of planetary reducer (8), the processing of quill (5) outfan has external tooth directly to drive planetary reducer to work, the outfan planet carrier endoporus of planetary reducer can pass through key and be connected with output shaft (11), to ensure the reliability of high pulling torque that output shaft exports。
9. a kind of steering tube pillar electric booster according to claim 1, it is characterized in that: housing (1) arranges lower cover (9) away from one end of upper cover (6), lower cover (9) is connected with housing (1) seam, output shaft (11) stretches out in the middle of lower cover (9), can be connected to steering gear input shaft with lower drive shaft。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161446.1A CN105691446A (en) | 2016-03-22 | 2016-03-22 | Steering tube type electric power assisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161446.1A CN105691446A (en) | 2016-03-22 | 2016-03-22 | Steering tube type electric power assisting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105691446A true CN105691446A (en) | 2016-06-22 |
Family
ID=56232279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610161446.1A Pending CN105691446A (en) | 2016-03-22 | 2016-03-22 | Steering tube type electric power assisting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105691446A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455530A (en) * | 2019-09-06 | 2021-03-09 | 比亚迪股份有限公司 | Angle transmission device, steering system and vehicle |
| CN112498473A (en) * | 2020-12-24 | 2021-03-16 | 河南护航实业股份有限公司 | Electronic steering gear of commercial vehicle |
| CN112706822A (en) * | 2019-10-25 | 2021-04-27 | 比亚迪股份有限公司 | Steering system and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112498473A (en) * | 2020-12-24 | 2021-03-16 | 河南护航实业股份有限公司 | Electronic steering gear of commercial vehicle |
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