阅读说明：本技术 用于整体式车桥前悬架车辆的电动助力转向系统 (Electric boosting steering system for integral axle front suspension vehicle ) 是由 贾斯帕·索哈尔 约瑟夫·斯凯纳 斯蒂芬·多克斯塔德 保罗·罗伯特·朗沃斯 克里斯多夫·罗尔斯 于 2019-05-20 设计创作，主要内容包括：描述了用于整体式车桥前悬架车辆的电动助力转向(EPAS)系统。示例EPAS系统包括转向从动臂,所述转向从动臂具有第一端和第二端。所述转向从动臂的所述第一端联接到所述车辆的车架。所述示例EPAS系统还包括EPAS齿条总成,所述EPAS齿条总成具有输入轴、齿条、电动马达和输出杆。所述齿条联接到所述输入轴并且可响应于所述输入轴的移动而移动。所述电动马达联接到所述齿条。所述电动马达对所述齿条的移动提供动力辅助。所述输出杆具有第一端和第二端。所述输出杆的所述第一端联接到所述齿条。所述输出杆的所述第二端联接到所述转向从动臂的所述第二端。(Describe electric power steering (EPAS) system for integral axle front suspension vehicle.Example EPAS system includes turning to slave arm, and the steering slave arm has a first end and a second end.The first end for turning to slave arm is connected to the vehicle frame of the vehicle.The example EPAS system further includes EPAS rack gear assembly, and the EPAS rack gear assembly has input shaft, rack gear, electric motor and output rod.The rack gear is connected to the input shaft and may be in response to the movement of the input shaft and move.The electric motor is connected to the rack gear.Mobile offer power-assisted of the electric motor to the rack gear.The output rod has a first end and a second end.The first end of the output rod is connected to the rack gear.The second end of the output rod is connected to the second end for turning to slave arm.)

1. a kind of electric power steering (EPAS) system of integral axle front suspension for vehicle, the EPAS system packet It includes:

Slave arm is turned to, the steering slave arm has a first end and a second end, the first end connection for turning to slave arm It is connected to the vehicle frame of the vehicle；And

EPAS rack gear assembly, the EPAS rack gear assembly include:

Input shaft；

Rack gear, the rack gear are connected to the input shaft, and the rack gear may be in response to the movement of the input shaft and move；

Electric motor, the electric motor are connected to the rack gear, mobile offer power of the electric motor to the rack gear Auxiliary；And

Output rod, the output rod have a first end and a second end, and the first end of the output rod is connected to the rack gear, The second end of the output rod is connected to the second end for turning to slave arm.

2. EPAS system as described in claim 1, wherein the EPAS rack gear assembly is installed to the vehicle frame of the vehicle.

3. EPAS system as described in claim 1, wherein the rack gear has longitudinal axis, the longitudinal axis is relative to institute The longitudinal axis of the integral axle of integral axle front suspension is stated with the angle orientation between 0 degree and 30 degree.

4. EPAS system as claimed in claim 3, wherein the electric motor has the longitudinal direction for being parallel to the rack gear The driving axis of axis.

5. EPAS system according to any one of claims 1 to 4, wherein the input shaft is connected to intermediate steering shaft, institute Stating input shaft may be in response to the movement of the intermediate steering shaft and moves.

6. EPAS system according to any one of claims 1 to 4, wherein the EPAS rack gear assembly further includes rack housing, The rack gear can be slided relative to the rack housing, and the input shaft can be rotated relative to the rack housing.

7. EPAS system as claimed in claim 6, wherein the input shaft is operably linked to be located in the rack housing Pinion gear, the pinion gear may be in response to the movement of the input shaft and moves, and the rack gear may be in response to the pinion gear Movement and move.

8. EPAS system according to any one of claims 1 to 4, the EPAS system further includes Drag link, the vertical pulling Bar has a first end and a second end, and the first end of the Drag link is connected to the second end for turning to slave arm, The second end of the Drag link is connected to the first knuckle of the vehicle.

9. EPAS system as claimed in claim 8, the EPAS system further includes drag link, the drag link has first end And second end, the first end of the drag link are connected to first knuckle, the second end connection of the drag link It is connected to the second knuckle of the vehicle.

10. EPAS system as claimed in claim 9, the EPAS system further includes damper, the damper It has a first end and a second end, the first end of the damper is connected to the vehicle frame or described of the vehicle One of the rack housing of EPAS rack gear assembly, the second end of the damper be connected to the steering slave arm, One of the Drag link or the drag link.

11. EPAS system as claimed in claim 9, wherein the output rod may be in response to the movement of the rack gear and move, The steering slave arm may be in response to the movement of the output rod and move, and the Drag link may be in response to the steering slave arm Movement and move, first knuckle may be in response to the movement of the Drag link and move, and the drag link may be in response to The movement of first knuckle and move, and second knuckle may be in response to the movement of the drag link and move.

12. EPAS system as claimed in claim 9, wherein the integral axle of the integral axle front suspension is in the vehicle First knuckle and second knuckle between extend.

13. EPAS system as claimed in claim 12, wherein the integral axle is one of walking beam or dead beam.

14. a kind of electric power steering (EPAS) system of integral axle front suspension for vehicle, the EPAS system packet It includes:

Slave arm is turned to, the steering slave arm has a first end and a second end, the first end connection for turning to slave arm It is connected to the vehicle frame of the vehicle；And

EPAS rack gear assembly, the EPAS rack gear assembly are installed to the vehicle frame of the vehicle, the EPAS rack gear assembly packet It includes:

Input shaft, the input shaft are located on the driver side of the vehicle；

Rack gear, the rack gear are connected to the input shaft, and the rack gear may be in response to the movement of the input shaft and move；

Electric motor, the electric motor are connected to the rack gear, mobile offer power of the electric motor to the rack gear Auxiliary；And

Output rod, the output rod are located in the passenger side of the vehicle, and the output rod has a first end and a second end, described The first end of output rod is connected to the rack gear, and the second end of the output rod is connected to the steering slave arm The second end.

15. EPAS system as claimed in claim 14, wherein the rack gear has a longitudinal axis, the longitudinal axis relative to The longitudinal axis of the integral axle of the integral axle front suspension is oriented with the angle between 0 degree and 30 degree.

Technical field

The present disclosure generally relates to electric power steering (EPAS) systems, and relate more particularly to for before integral axle The EPAS system of spring suspension vehicle.

Background technique

Such as truck (for example, light-duty, medium-sized, heavy and/or superduty truck), sport vehicle and offroad vehicle Vehicle considers generally to include integral axle (for example, solid beam, buckstay, single-beam etc.) front suspension for durability.Monoblock type Vehicle bridge front suspension is matched with the circulation ball nut formula gear train of hydraulic operation.The circulation of this hydraulic operation is rolled Pearl nut gear system is often heavy and expensive, while usually also providing relatively limited performance characteristic.

Summary of the invention

In some instances, a kind of EPAS system of integral axle front suspension for vehicle is disclosed.In some public affairs In the example opened, EPAS system includes turning to slave arm, and the steering slave arm has a first end and a second end.In some disclosures Example in, the first end for turning to slave arm is connected to the vehicle frame of vehicle.In some disclosed examples, EPAS system further includes EPAS rack gear assembly.In some disclosed examples, EPAS rack gear assembly includes input shaft, rack gear, electric motor and output rod. In some disclosed examples, rack gear is connected to input shaft and may be in response to the movement of input shaft and move.In some disclosures Example in, electric motor is connected to rack gear.In some disclosed examples, electric motor is auxiliary to the mobile offer power of rack gear It helps.In some disclosed examples, output rod is had a first end and a second end.In some disclosed examples, the of output rod One end is connected to rack gear.In some disclosed examples, the second end of output rod is connected to the second end for turning to slave arm.

In some instances, a kind of EPAS system of integral axle front suspension for vehicle is disclosed.In some public affairs In the example opened, EPAS system includes turning to slave arm, and the steering slave arm has a first end and a second end.In some disclosures Example in, the first end for turning to slave arm is connected to the vehicle frame of vehicle.In some disclosed examples, EPAS system further includes EPAS rack gear assembly, the EPAS rack gear assembly are installed to the vehicle frame of vehicle.In some disclosed examples, EPAS rack gear assembly Including input shaft, rack gear, electric motor and output rod.In some disclosed examples, input shaft is located at the driver side of vehicle On.In some disclosed examples, rack gear is connected to input shaft and may be in response to the movement of input shaft and move.In some public affairs In the example opened, electric motor is connected to rack gear.In some disclosed examples, mobile offer power of the electric motor to rack gear Auxiliary.In some disclosed examples, output rod is located in the passenger side of vehicle.In some disclosed examples, output rod tool There is first end and second end.In some disclosed examples, the first end of output rod is connected to rack gear.In some disclosed examples In, the second end of output rod is connected to the second end for turning to slave arm.

Detailed description of the invention

Fig. 1 shows example vehicle, and the vehicle includes that EPAS system can be real therewith according to the introduction of the disclosure The example integral axle front suspension applied.

Fig. 2 is the example integral axle front suspension of the example EPAS system pairing constructed with the introduction according to the disclosure Perspective view.

Fig. 3 is the example integral axle front suspension of Fig. 2 and the top view of example EPAS system.

Fig. 4 is the example integral axle front suspension of Fig. 2 and Fig. 3 and the bottom view of example EPAS system.

Fig. 5 is mounted to example integral axle front suspension and the example EPAS system of Fig. 2 to Fig. 4 of the example vehicle frame of vehicle The perspective view of system.

Fig. 6 be the example integral axle front suspension of Fig. 2 to Fig. 5, example EPAS system and example vehicle frame another thoroughly View.

Fig. 7 is the perspective with the dead beam type integral axle front suspension of example of the example EPAS system of Fig. 2 to Fig. 6 pairing Figure.

It is shown in above-mentioned attached drawing and describes certain examples in detail below.When describing these examples, use is similar Or identical appended drawing reference identifies the same or similar element.The figure is not drawn necessarily to scale, and in order to it is clear and/ Or for the sake of simplicity, may large be shown in ratio or on diagrammatic view figure certain features and certain views.

Specific embodiment

Integral axle front suspension is extremely durable, and is therefore suitable in such as truck (for example, light-duty, medium-sized, heavy And/or super type truck), implement in the vehicle of sport vehicle and offroad vehicle etc..However, before this kind of integral axle The circulation ball nut formula gear train of suspension traditionally paired hydraulic operation has the shortcomings that many.For example, hydraulic behaviour The circulation ball nut formula gear train of work is often heavy and expensive, while it is special usually also to provide relatively limited performance Sign.The circulation ball nut formula gear train of hydraulic operation returns steering system and brings significant compliance burden.

The known monoblock type matched different from the above-described circulation ball nut formula gear train with hydraulic operation Vehicle bridge front suspension, integral axle front suspension disclosed herein are advantageously matched with EPAS system.Disclosed EPAS system phase Many positive compromises are provided for the circulation ball nut formula gear train of conventional hydraulic operation.For example, with this hydraulic The circulation ball nut formula gear train of operation compares, and EPAS system disclosed herein is relatively lighter and cost is lower, simultaneously Wider performance characteristic is additionally advantageously provided, including can not via the circulation ball nut formula gear train of this hydraulic operation The driving supplemental characteristic of acquisition.Implement disclosed EPAS system instead of the circulation ball nut formula gear train of this hydraulic operation System additionally advantageously reduces compliance burden associated with steering system.

Fig. 1 shows example vehicle 100, and the vehicle 100 includes that EPAS system can be according to the introduction of the disclosure therewith The example integral axle front suspension 102 implemented together.The vehicle 100 of Fig. 1 is superduty truck.In other examples, vehicle 100 can be different types of vehicle, such as light-duty, medium-sized or heavy truck, sport vehicle, offroad vehicle, van-type goods Vehicle, car etc..Integral axle front suspension 102 include vehicle 100 example the near front wheel 104 and example off-front wheel 106 it Between position and/or extend integral axle.Integral axle may be embodied as solid beam, buckstay, single-beam etc., and can be with It is further embodied as walking beam or dead beam.

As used herein, term " walking beam " refer to transfer power to vehicle one or more wheels vehicle bridge or Beam.For example, the integral axle of the integral axle front suspension 102 of Fig. 1 can be the near front wheel 104 for transferring power to vehicle With the walking beam of off-front wheel 106.As used herein, term " dead beam " refers to not to the vehicle of any wheel of vehicle transmitting power Bridge or beam.For example, it includes vehicle that the integral axle of the integral axle front suspension 102 of Fig. 1, which can be not to vehicle 100, 100 the near front wheel 104 and any wheel of off-front wheel 106 transmit the dead beam of power.

In the example of Fig. 1 shown, vehicle 100 includes being located at 104 top of the near front wheel and/or rear (for example, being located at vehicle 100 left side) example driver side 108, and further include being located at 106 top of off-front wheel and/or rear (for example, being located at The right side of vehicle 100) Illustrative passenger side 110.Vehicle 100 includes the example steering wheel 112 on driver side 108.Side It is connected to steering column and one or more steering shafts (for example, intermediate steering shaft etc.) to disk 112, so that the rotation of steering wheel 112 Movement is passed to the steering system (for example, EPAS system) of vehicle 100.In other examples, driver side 108 and passenger side 110 be correspondingly oriented and/or position can be with situation shown in FIG. 1 on the contrary, and steering wheel 112 therefore can be located at vehicle 100 right side.

Fig. 2 is the example integral axle front overhang that the example EPAS system 202 constructed with the introduction according to the disclosure is matched The perspective view of frame 200.Fig. 3 is the example integral axle front suspension 200 of Fig. 2 and the top view of example EPAS system 202.Fig. 4 It is the example integral axle front suspension 200 of Fig. 2 and Fig. 3 and the bottom view of example EPAS system 202.Fig. 5 is mounted to vehicle Example vehicle frame 500 Fig. 2 to Fig. 4 example integral axle front suspension 200 and example EPAS system 202 perspective view.Fig. 6 It is another perspective of the example integral axle front suspension 200 of Fig. 2 to Fig. 5, example EPAS system 202 and example vehicle frame 500 Figure.

The integral axle front suspension 200 and EPAS system 202 of Fig. 2 to Fig. 6 can be in the vehicle of all Fig. 1 described above Implement in 100 vehicle.Implementing for EPAS system 202 can be in the circulation for being not present and/or excluding conventional hydraulic operation It is carried out in the case where ball nut formula gear train, to provide above-described positive compromise (for example, the weight mitigated for vehicle Amount, the cost, improved performance characteristic, the steering system compliance of reduction that reduce etc.).

In the example of Fig. 2 to Fig. 6 shown, integral axle front suspension 200 is whole including the example for being embodied as walking beam Body formula vehicle bridge 204 (for example, solid beam, buckstay, single-beam etc.).The integral axle 204 of Fig. 2 to Fig. 6 includes example first end 206；Example second end 208, the second end 208 are located at the opposite side of the first end 206 of integral axle 204；And example Longitudinal axis 210, the longitudinal axis 210 extend between the first end 206 and second end 208 of integral axle 204.Fig. 2 First end 206 to the integral axle 204 of Fig. 6 is connected to the related to the first front-wheel (for example, the near front wheel) of vehicle of vehicle The first knuckle of example 212 (for example, left steering section) of connection.The second end 208 of the integral axle 204 of Fig. 2 to Fig. 6 is connected to The second knuckle of example associated with the second front-wheel (for example, the off-front wheel) of vehicle 214 (for example, right turn section) of vehicle.

The EPAS system 202 of Fig. 2 to Fig. 6 is straight including example EPAS rack gear assembly 216, example steering slave arm 218, example Pull rod 220, example drag link 222 and example damper 224.As described further below, the EPAS tooth of Fig. 2 to Fig. 6 The connection of assembly 216 and/or the vehicle frame 500 for being installed to vehicle, so that EPAS rack gear assembly 216 is generally oriented in along Fig. 2 On the direction extended to the longitudinal axis 210 of the integral axle 204 of Fig. 6.The EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 includes showing Example rack housing 226, example input shaft 228, example rack gear 230, example output rod 232 and example electric motor 234.

The rack housing 226 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 couples and/or is installed to the vehicle frame 500 of vehicle.Fig. 2 Rack housing 226 to Fig. 6 accommodates and/or partly accommodates the rack gear 230 of EPAS rack gear assembly 216.In showing for Fig. 2 to Fig. 6 Example in, rack housing 226 includes the example longitudinal axis limited by the example longitudinal axis 238 and/or moving direction of rack gear 230 Line 236.As shown in Figure 3 and Figure 4, the longitudinal axis of the longitudinal axis 236 of the rack housing 226 of Fig. 2 to Fig. 6 and/or rack gear 230 238 relative to the integral axle 204 of Fig. 2 to Fig. 6 longitudinal axis 210 with exemplary angles 302 orientation.In showing for Fig. 2 to Fig. 6 In example out, angle 302 has the value of about ten degree (10 °).In other examples, the value of angle 302 can be in zero degree Between (0 °) and 30 degree (30 °).

The input shaft 228 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 can be relative to the rack housing of EPAS rack gear assembly 216 226 rotations.The input shaft 228 of Fig. 2 to Fig. 6 includes example first end 240 and 240 opposite side of first end positioned at input shaft 228 Second end.In some instances, the first end 240 of the input shaft 228 of Fig. 2 to Fig. 6 is connected to the intermediate steering shaft of vehicle.In Between steering shaft the rotary motion of other one or more steering shafts from steering wheel and/or vehicle is transmitted to Fig. 2 to Fig. 6's The input shaft 228 of EPAS rack gear assembly 216.In other examples, the first end 240 of the input shaft 228 of Fig. 2 to Fig. 6 is connected to The steering gear of the wire-controlled steering system of vehicle.Steering gear is based at the steering gear received one Or multiple signals and the input shaft 228 of EPAS rack gear assembly 216 that rotary motion is provided to Fig. 2 to Fig. 6, wherein signal is base The steering data detected at the feedback actuator in wire-controlled steering system.It, can be in other wire-controlled steering system examples Cancel the input shaft 228 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6.In other this kind of examples, the tooth of EPAS rack gear assembly 216 The movement of item 230 can be via ball nut assembly or the electric motor 234 for being operably linked to EPAS rack gear assembly 216 It is carried out with core motor.In other this kind of examples, ball nut assembly or with core motor received control based on one or more Signal processed and operate, wherein control signal be based on the steering data detected at the feedback actuator of wire-controlled steering system.

In the example of Fig. 2 to Fig. 6 shown, input shaft 228 is located at the driver side of vehicle (for example, the vehicle of Fig. 1 100 driver side 108).The second end of the input shaft 228 of Fig. 2 to Fig. 6 includes and/or is operably linked to be located at EPAS Pinion gear in the rack housing 226 of rack gear assembly 216.In some instances, pinion gear can be integrally formed with input shaft 228 And/or it is integrally formed at the second end of the input shaft 228.Pinion gear engagement, engagement and/or driving EPAS rack gear assembly 216 rack gear 230.The rack gear 230 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 can be relative to the rack gear of EPAS rack gear assembly 216 226 sliding of cover.Input shaft 228, pinion gear and the rack gear 230 of EPAS rack gear assembly 216 are operatively coupled, so that pinion gear is rung Should in input shaft 228 movement (for example, rotation) and move (for example, rotation), and rack gear 230 is in response to the movement of pinion gear (for example, rotation) and move (for example, translation and/or slide).

The output rod 232 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 is including example first end 402 and is located at output rod 232 402 opposite side of first end example second end 404.The connection of first end 402 of the output rod 232 of Fig. 2 to Fig. 6 is (for example, rigidity Ground and non-rotatably connection) to the rack gear 230 of EPAS rack gear assembly 216, so that output rod 232 moves together in company with rack gear 230 Dynamic (for example, translation and/or sliding).In some instances, the 232 (example of output rod of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 Such as, the first end 402 of output rod 232) it can be integrally formed with the rack gear 230 of EPAS rack gear assembly 216.It is as follows further Described, the second end 404 of the output rod 232 of Fig. 2 to Fig. 6 is connected to the steering slave arm 218 of Fig. 2 to Fig. 6.In Fig. 2 to Fig. 6 The example shown in, output rod 232 and turn to slave arm 218 be located at the passenger side of vehicle (for example, the vehicle 100 of Fig. 1 multiplies Objective side 110).Rack gear 230, output rod 232 and steering slave arm 218 are operatively coupled, so that output rod 232 is in response to rack gear 230 movement (for example, translation and/or sliding) and move (for example, translation and/or sliding), and turn to slave arm 218 and respond In output rod 232 movement (for example, translation and/or sliding) and move (for example, pivot and/or rotate).

Shifting of the electric motor 234 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 to the rack gear 230 of EPAS rack gear assembly 216 It is dynamic that power-assisted is provided.In some instances, it can control and/or be adjusted by electronic horse via the controller of EPAS system 202 The rank and/or degree of the power-assisted provided up to 234.It in some instances, can be based on steering wheel, the steering column from vehicle And/or steering shaft (for example, intermediate steering shaft) obtains, and/or the input shaft 228 of the EPAS rack gear assembly 216 from Fig. 2 to Fig. 6 The steering of acquisition inputs and determines the rank and/or degree of the power-assisted provided by electric motor 234.In other examples, It can feedback actuator and/or steering gear, ball nut assembly or concentric based on the wire-controlled steering system from vehicle Motor obtain, and/or the EPAS rack gear assembly 216 from Fig. 2 to Fig. 6 input shaft 228 obtain steering input and determine by electricity The rank and/or degree for the power-assisted that dynamic motor 234 provides.

The electric motor 234 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 includes example motor cover 242 and example driving axis 244.The motor cover 242 of the electric motor 234 of Fig. 2 to Fig. 6 couples and/or is installed to the vehicle frame 500 and/or EPAS rack gear of vehicle The rack housing 226 of assembly 216.The accommodating of motor cover 242 and/or partly accommodate electric motor 234 one or more operations and/ Or movable part.For example, driving axis limit of the driving axis 244 of electric motor 234 by electric motor 234, wherein driving Axis is accommodated by the motor cover 242 of electric motor 234 and/or is partially housed in the motor cover 242.Electric motor 234 Drive shaft arrives electric motor 234 and/or the electric current generated at the electric motor 234 in response to offer and moves (for example, rotation Turn).In the example of Fig. 2 to Fig. 6 shown, the driving axis 244 of the electric motor 234 of Fig. 2 to Fig. 6 is parallel to Fig. 2 to Fig. 6 Rack housing 226 longitudinal axis 236, and/or be parallel to the longitudinal axis 238 of the rack gear 230 of Fig. 2 to Fig. 6.

The electric motor 234 of the EPAS rack gear assembly 216 of Fig. 2 to Fig. 6 is operably linked to EPAS rack gear assembly 216 Rack gear 230.For example, the drive shaft of electric motor 234 can be connected to rack gear 230 via gear train, so that the movement of drive shaft Rack gear is transmitted to by gear train.In some instances, gear train can by rack housing 226 and/or motor cover 242 accommodating and/ Or it is partially housed in the rack housing 226 and/or the motor cover 242.Rack gear 230, the gear of EPAS rack gear assembly 216 System and electric motor 234 be operatively coupled so that gear train in response to the drive shaft of electric motor 234 movement (for example, rotation Turn) and move (for example, rotation), and rack gear 230 in response to gear train movement (for example, rotation) and move (for example, translating And/or sliding).

The steering slave arm 218 of the EPAS system 202 of Fig. 2 to Fig. 6 is including example first end 246 and is located at steering slave arm The example second end 248 of 218 246 opposite side of first end.The first end 246 of the steering slave arm 218 of Fig. 2 to Fig. 6 is connected to The vehicle frame 500 of vehicle.The second end 248 of the steering slave arm 218 of Fig. 2 to Fig. 6 is connected to the EPAS rack gear assembly of Fig. 2 to Fig. 6 The second end 404 of 216 output rod 232.As described further below, the second end 248 for turning to slave arm 218 is also connected to The Drag link 220 of Fig. 2 to Fig. 6.Output rod 232 turns to slave arm 218 and Drag link 220 and is operatively coupled so that turn to from Swing arm 218 in response to output rod 232 movement (for example, translation and/or sliding) and move (for example, pivot and/or rotate), and And Drag link 220 moves (for example, pivot) in response to turning to the movement (for example, pivot and/or rotate) of slave arm 218.

The Drag link 220 of the EPAS system 202 of Fig. 2 to Fig. 6 includes example first end 250 and positioned at the of Drag link 220 The example second end 252 of 250 opposite side of one end.The first end 250 of the Drag link 220 of Fig. 2 to Fig. 6 is connected to turning for Fig. 2 to Fig. 6 To the second end 248 of slave arm 218.The second end 252 of the Drag link 220 of Fig. 2 to Fig. 6 is connected to the first knuckle of vehicle 212 (for example, left steering sections).It turns to slave arm 218, Drag link 220 and the first knuckle 212 to be operatively coupled, so that directly Pull rod 220 moves (for example, pivot) in response to turning to the movement (for example, pivot and/or rotate) of slave arm 218, and the One knuckle 212 in response to Drag link 220 movement (for example, pivot) and move (for example, pivot).

The drag link 222 of the EPAS system 202 of Fig. 2 to Fig. 6 includes example first end 254 and positioned at the of drag link 222 The example second end 256 of 254 opposite side of one end.The first end 254 of the drag link 222 of Fig. 2 to Fig. 6 is connected to first turn of vehicle To 212 (for example, left steering sections) of section.The second end 256 of the drag link 222 of Fig. 2 to Fig. 6 is connected to the second knuckle of vehicle 214 (for example, right turn sections).First knuckle 212, drag link 222 and the second knuckle 214 are operatively coupled, so that horizontal Pull rod 222 in response to the first knuckle 212 movement (for example, pivot) (for example, such as can in response to the movement of Drag link 220 The movement that can occur) and move (for example, pivot), and the second knuckle 214 in response to drag link 222 movement (for example, pivot Turn) and move (for example, pivot).

Steering slave arm 218, Drag link of the damper 224 of the EPAS system 202 of Fig. 2 to Fig. 6 to Fig. 2 to Fig. 6 220 and/or above-mentioned on the move one or more of drag link 222 damped.The damper 224 of Fig. 2 to Fig. 6 includes Example cylinder 258 and example piston 260, the example piston 260 can move in cylinder 258 and/or relative to the cylinder 258 Dynamic (for example, sliding).In the example of Fig. 2 to Fig. 6 shown, the cylinder by damper 224 of damper 224 The 258 example first ends 262 for forming and/or being connected to the cylinder 258 are connected to the rack housing 226 of Fig. 2 to Fig. 6, and turn To the example second end for forming and/or being connected to the piston 260 by the piston 260 of damper 224 of damper 224 264 are connected to the steering slave arm 218 of Fig. 2 to Fig. 6.In some instances, the first end 262 of damper 224 can Alternatively it is connected to the vehicle frame 500 of vehicle.In some instances, the second end 264 of damper 224 can alternatively join It is connected to Drag link 220 or drag link 222.

Therefore, the input shaft 228 of Fig. 2 to Fig. 6 in response to the intermediate steering shaft of vehicle movement (for example, rotation) (or In response to steering gear, ball nut assembly or with the movement of core motor in the case where steering-by-wire implementation) and move Dynamic (for example, rotation), the rack gear 230 of Fig. 2 to Fig. 6 in response to input shaft 228 movement and move (for example, translation and/or cunning It is dynamic), the output rod 232 of Fig. 2 to Fig. 6 in response to rack gear 230 movement and move (for example, translation and/or slide), Fig. 2 to Fig. 6 Steering slave arm 218 in response to output rod 232 movement and move (pivot and/or rotation), the Drag link 220 of Fig. 2 to Fig. 6 (for example, pivot) is moved in response to turning to the movement of slave arm 218, the first knuckle 212 of Fig. 2 to Fig. 6 is in response to vertical pulling The movement of bar 220 and move (for example, pivot), the drag link 222 of Fig. 2 to Fig. 6 in response to the first knuckle 212 movement and move Dynamic (for example, pivot), and the second knuckle 214 of Fig. 2 to Fig. 6 in response to drag link 222 movement and move (for example, pivot Turn).The integral axle 204 of Fig. 2 to Fig. 6 extends between the first knuckle 212 and the second knuckle 214.Fig. 2 is to Fig. 6's Mobile offer power-assisted of the electric motor 234 to above-described rack gear 230.The damper 224 of Fig. 2 to Fig. 6 to turn It is damped to above-mentioned on the move one or more of slave arm 218, Drag link 220 and/or drag link 222.

Fig. 7 is the dead beam type integral axle front suspension 700 of example with the pairing of the example EPAS system 202 of Fig. 2 to Fig. 6 Perspective view.The integral axle front suspension 700 and EPAS system 202 of Fig. 7 can be in the vehicle 100 of all Fig. 1 described above Vehicle in implement.Implementing for EPAS system 202 can be in the circulating ball spiral shell for being not present and/or excluding conventional hydraulic operation It is carried out in the case where matrix gear train, to provide above-described positive compromise (for example, the weight mitigated, drop for vehicle Low cost, improved performance characteristic, steering system compliance of reduction etc.).

In the example of Fig. 7 shown, dead beam type integral axle front suspension 700 includes the example entirety for being embodied as dead beam Formula vehicle bridge 704 (for example, solid beam, buckstay, single-beam etc.).The integral axle 704 of Fig. 7 includes example first end 706；Example Second end 708, the second end 708 are located at the opposite side of the first end 706 of integral axle 704；And example longitudinal axis 710, the longitudinal axis 710 extends between the first end 706 and second end 708 of integral axle 704.The monoblock type of Fig. 7 The first end 706 of vehicle bridge 704 is connected to first turn of example associated with the first front-wheel (for example, the near front wheel) of vehicle of vehicle To 712 (for example, left steering sections) of section.The second end 708 of the integral axle 704 of Fig. 7 is connected to second with vehicle of vehicle Associated the second knuckle of example 714 (for example, right turn section) of front-wheel (for example, off-front wheel).

First end 706, second end 708 and the longitudinal axis 710 of the integral axle 704 of Fig. 7 correspond respectively to retouch above First end 206, second end 208 and the longitudinal axis 210 of the integral axle 204 of the Fig. 2 to Fig. 6 stated.The first knuckle of Fig. 7 712 and second knuckle 714 correspond respectively to the first knuckle 212 and the second knuckle 214 of above-described Fig. 2 to Fig. 6. Substantially phase described in activity beam type integral axle front suspension 200 of the EPAS system 202 of Fig. 2 to Fig. 6 with Fig. 2 above in conjunction With mode and the dead beam type integral axle front suspension 700 of Fig. 7 implement together and/or paired.

According to foregoing teachings, it will be appreciated that the disclosed EPAS system for integral axle front suspension vehicle relative to The circulation ball nut formula gear train of conventional hydraulic operation for integral axle front suspension vehicle provides many excellent Point.For example, disclosed EPAS system is relatively lighter compared with the circulation ball nut formula gear train of this hydraulic operation And cost is lower, while additionally advantageously providing wider performance characteristic, including the circulating ball spiral shell via this hydraulic operation The unavailable driving supplemental characteristic of matrix gear train.It is real instead of the circulation ball nut formula gear train of this hydraulic operation Applying disclosed EPAS system additionally advantageously reduces compliance burden associated with steering system.

In some instances, a kind of EPAS system of integral axle front suspension for vehicle is disclosed.In some public affairs In the example opened, EPAS system includes turning to slave arm, and the steering slave arm has a first end and a second end.In some disclosures Example in, the first end for turning to slave arm is connected to the vehicle frame of vehicle.In some disclosed examples, EPAS system further includes EPAS rack gear assembly.In some disclosed examples, EPAS rack gear assembly includes input shaft, rack gear, electric motor and output rod. In some disclosed examples, rack gear is connected to input shaft and may be in response to the movement of input shaft and move.In some disclosures Example in, electric motor is connected to rack gear.In some disclosed examples, electric motor is auxiliary to the mobile offer power of rack gear It helps.In some disclosed examples, output rod is had a first end and a second end.In some disclosed examples, the of output rod One end is connected to rack gear.In some disclosed examples, the second end of output rod is connected to the second end for turning to slave arm.

In some disclosed examples, EPAS rack gear assembly is installed to the vehicle frame of vehicle.In some disclosed examples, tooth Item have longitudinal axis, the longitudinal axis relative to the integral axle of integral axle front suspension longitudinal axis 0 Angle between degree and 30 degree orients.In some disclosed examples, electric motor has the longitudinal axis for being parallel to rack gear Driving axis.

In some disclosed examples, input shaft is connected to intermediate steering shaft.In some disclosed examples, input shaft can In response to intermediate steering shaft movement and move.In some disclosed examples, EPAS rack gear assembly further includes rack housing.One In a little disclosed examples, rack gear can be slided relative to rack housing.In some disclosed examples, input shaft can be relative to rack housing Rotation.In some disclosed examples, input shaft is operably linked to the pinion gear being located in rack housing.Some disclosed In example, pinion gear may be in response to the movement of input shaft and move, and rack gear may be in response to the movement of pinion gear and move.

In some disclosed examples, EPAS system further includes Drag link, and the Drag link has a first end and a second end. In some disclosed examples, the first end of Drag link is connected to the second end for turning to slave arm.In some disclosed examples, The second end of Drag link is connected to the first knuckle of vehicle.

In some disclosed examples, EPAS system further includes drag link, and the drag link has a first end and a second end. In some disclosed examples, the first end of drag link is connected to the first knuckle.In some disclosed examples, drag link Second end is connected to the second knuckle of vehicle.

In some disclosed examples, EPAS system further includes damper, and the damper has first end And second end.In some disclosed examples, the first end of damper is connected to the vehicle frame or EPAS rack gear assembly of vehicle One of rack housing.In some disclosed examples, the second end of damper, which is connected to, turns to slave arm, Drag link Or one of drag link.

In some disclosed examples, output rod may be in response to the movement of rack gear and move, and turning to slave arm may be in response to The movement of output rod and move, Drag link may be in response to turn to slave arm movement and move, the first knuckle may be in response to directly The movement of pull rod and move, drag link may be in response to the movement of the first knuckle and move, and the second knuckle may be in response to The movement of drag link and move.

In some disclosed examples, the integral axle of integral axle front suspension is in the first knuckle of vehicle and Extend between two knuckles.In some disclosed examples, integral axle is one of walking beam or dead beam.

In some instances, a kind of EPAS system of integral axle front suspension for vehicle is disclosed.In some public affairs In the example opened, EPAS system includes turning to slave arm, and the steering slave arm has a first end and a second end.In some disclosures Example in, the first end for turning to slave arm is connected to the vehicle frame of vehicle.In some disclosed examples, EPAS system further includes EPAS rack gear assembly, the EPAS rack gear assembly are installed to the vehicle frame of vehicle.In some disclosed examples, EPAS rack gear assembly Including input shaft, rack gear, electric motor and output rod.In some disclosed examples, input shaft is located at the driver side of vehicle On.In some disclosed examples, rack gear is connected to input shaft and may be in response to the movement of input shaft and move.In some public affairs In the example opened, electric motor is connected to rack gear.In some disclosed examples, mobile offer power of the electric motor to rack gear Auxiliary.In some disclosed examples, output rod is located in the passenger side of vehicle.In some disclosed examples, output rod tool There is first end and second end.In some disclosed examples, the first end of output rod is connected to rack gear.In some disclosed examples In, the second end of output rod is connected to the second end for turning to slave arm.

In some disclosed examples, rack gear has longitudinal axis, and the longitudinal axis is relative to integral axle front overhang The longitudinal axis of the integral axle of frame is oriented with the angle between 0 degree and 30 degree.

In some disclosed examples, EPAS system further includes Drag link, and the Drag link has a first end and a second end. In some disclosed examples, the first end of Drag link is connected to the second end for turning to slave arm.In some disclosed examples, The second end of Drag link is connected to the first knuckle of vehicle.

In some disclosed examples, EPAS system further includes drag link, and the drag link has a first end and a second end. In some disclosed examples, the first end of drag link is connected to the first knuckle.In some disclosed examples, drag link Second end is connected to the second knuckle of vehicle.

In some disclosed examples, EPAS system further includes damper, and the damper has first end And second end.In some disclosed examples, the first end of damper is connected to the vehicle frame or EPAS rack gear assembly of vehicle One of rack housing.In some disclosed examples, the second end of damper, which is connected to, turns to slave arm, Drag link Or one of drag link.

In some disclosed examples, output rod may be in response to the movement of rack gear and move, and turning to slave arm may be in response to The movement of output rod and move, Drag link may be in response to turn to slave arm movement and move, the first knuckle may be in response to directly The movement of pull rod and move, drag link may be in response to the movement of the first knuckle and move, and the second knuckle may be in response to The movement of drag link and move.

In some disclosed examples, the integral axle of integral axle front suspension is in the first knuckle of vehicle and Extend between two knuckles.In some disclosed examples, integral axle is one of walking beam or dead beam.

Although certain example apparatus and product have been disclosed herein, the coverage area of this patent is not limited to this. On the contrary, this patent covering actually falls into all devices and product in the scope of the claims of this patent.

According to one embodiment, the above invention is further characterized by Drag link, the Drag link have first end and Second end, the first end of Drag link are connected to the second end for turning to slave arm, and the second end of Drag link is connected to the first of vehicle Knuckle.

According to one embodiment, the above invention is further characterized by drag link, the drag link have first end and Second end, the first end of drag link are connected to the first knuckle, and the second end of drag link is connected to the second knuckle of vehicle.

According to one embodiment, the above invention is further characterized by damper, and the damper has First end and second end, the first end of damper are connected to one in the vehicle frame of vehicle or the rack housing of EPAS rack gear assembly Person, the second end of damper, which is connected to, turns to one of slave arm, Drag link or drag link.

According to one embodiment, output rod may be in response to the movement of rack gear and move, and turning to slave arm may be in response to export The movement of bar and move, Drag link may be in response to turn to slave arm movement and move, the first knuckle may be in response to Drag link Movement and move, drag link may be in response to the movement of the first knuckle and move, and the second knuckle may be in response to horizontal drawing The movement of bar and move.

According to one embodiment, the integral axle of integral axle front suspension is in the first knuckle of vehicle and second turn Extend between section, integral axle is one of walking beam or dead beam.