CN103419617B - The driving means arranged in wheel - Google Patents

Abstract

The present invention relates to a kind of driving means that (in wheel) is set in wheel, it drive shaft including being positioned at the center of rotation of wheel component；It is fixed on car body, the housing department of the confession through installation of described drive shaft；It is fixed on the stator of the inner side of described housing department；The rotor installed with the state separated with described stator, rotate by powering；It is connected to the inner side of described rotor, for the through inboard gear of described drive shaft；Periphery, the inner side that is installed on described housing department in revolvable mode along described inboard gear engage with described inboard gear, realize the stepped gear that slows down for the first time and be incorporated into, in spline mode, the swing pinion that described drive shaft engage with described stepped gear, realizes deceleration for the second time.

Description

The driving means arranged in wheel

Technical field

The present invention relates to the driving means arranged in wheel, particularly relate to a kind of motor and decelerator The interference of installing space reduction and other parts is capable of in the wheel minimized the driving means arranged.

Background technology

Along with the exhaustion of Fossil fuel, replace the vehicle using the such as Fossil fuel such as gasoline, diesel oil, just The electric automobile of the electrical energy drive motor of storage in developing battery.

Electric automobile is divided into pure electric vehicle, solaode vehicle, fuel-cell vehicle, hybrid power Vehicle etc., wherein, pure electric vehicle only utilize in rechargeable battery the electric energy of storage to drive motor, too Sun fuel cell vehicle can utilize light cell to drive motor, and fuel-cell vehicle utilizes the combustion using hydrogen fuel Material battery drives motor, motor vehicle driven by mixed power to utilize Fossil fuel to drive electromotor, to utilize electricity Drive motor, thus and with electromotor and motor.

It is said that in general, the driving means arranged in wheel is electrically made as the use at such as electric automobile For in the automobile of power source use technology, be different from gasoline or diesel car by means of engine The mode transmitted with the power of variator and drive shaft and drive wheel to rotate, and be made by being configured at left and right Driving wheel or left and right and front and back motor within four driving wheels, directly transmit the technology of power to wheel.

The background technology of the present invention is at No. 2011-0040459 (2011.04. of Korean published Patent publication 20 disclosures, denomination of invention: the drive system wheel driver arranged in wheel) disclosed in.

Summary of the invention

Technical problem

Between the existing driving means arranged in wheel is owing to being configured at brake disc motor and taking turns, Therefore motor protrudes to vehicle interior side corresponding to clamp width.Therefore, with original such as McPherson The suspension of formula and multi link formula disturbs, and is just using disc brake apparatus side without changing suspension design There is difficulty in face.

Therefore, it is proposed to this to be carried out the necessity improved.

The present invention precisely in order to improve as above problem and research and develop, disc brake apparatus is installed on ratio electronic Machine, more towards the inner side of vehicle, is configured at wheel motor internal, thus hangs without changing front-wheel and trailing wheel The design of frame, just can be installed in wheel, the brake unit of disc type, the driving means arranged.

Technical scheme

The driving means arranged in wheel of the present invention includes: be positioned at the driving of the center of rotation of wheel component Axle；It is fixed on car body, the housing department of the confession through installation of described drive shaft；It is fixed on the interior of described housing department The stator of side；With the state installation separated with described stator, and the rotor rotated by power supply；Connect In the inner side of described rotor, and the inboard gear that the described drive shaft of confession is through；Outside described inboard gear In week, it is installed on the inner side of described housing department in revolvable mode, and engages with described inboard gear, And realize the stepped gear slowed down for the first time；And it is incorporated into described drive shaft in spline mode, and, Engage with described stepped gear, and realize the swing pinion that second time is slowed down.

Additionally, it is preferred that described inboard gear includes: be fixed on the fixing component of the inner side of described rotor；From Described fixing component is towards the connecting elements of the inner side extension of described drive shaft；And from described connecting elements Extend, and there is to surround the shape in the outside of described drive shaft, and be formed with the center of profile of tooth in outside Gear.

Additionally, it is preferred that described stepped gear includes: be engaged in the bottom tooth that described central gear carries out rotating Wheel；And there is the diameter less than described bottom gears, and the top rotated together with described bottom gears Gear.

Additionally, it is preferred that described swing pinion has the external diameter of the external diameter more than described central gear, is engaged in Described top gear rotates.

Additionally, it is preferred that present invention additionally comprises be fixed on described take turns the inner side of component, in spline mode with described Wheel in the wheel hub that drive shaft connects.

Additionally, it is preferred that present invention additionally comprises the described drive shaft being connected to protrude to the outside of described housing department Brake disc；And it is installed on described housing department, and connect with described brake disc, produce brake force Jaw part.

Technique effect

Owing to the driving means arranged in wheel of the present invention is inside the housing department that stator and rotor are installed Realize slowing down for the first time and slowing down for the second time, thus motor is capable of with decelerator integrated, makes portion Part realizes miniaturization.

Further, since the reduced space that electric motor of the present invention is installed with decelerator, thus set in wheel The driving means put can be installed on the different front-wheel of suspension and trailing wheel jointly, it is possible to saves producing cost.

Further, since the present invention realizes slowing down for the first time in engage the stepped gear rotated with inboard gear After, in engage the swing pinion rotated with stepped gear, realize second time slow down, it is thus possible to make driving Torque increases, and improves the driving force of motor.

Accompanying drawing explanation

Fig. 1 is that the most main of the driving means arranged in wheel of display one embodiment of the invention regards Figure；

Fig. 2 is along the A-A partial cut of Fig. 1 the inside that shows the driving means arranged in wheel Schematic cross sectional view；

Fig. 3 is that the most main of the driving means arranged in wheel of display another embodiment of the present invention regards Figure；

Fig. 4 is along the B-B partial cut of Fig. 3 the inside that shows the driving means arranged in wheel Schematic cross sectional view.

Description of reference numerals

1: the driving means of (in-wheel) is set in wheel

10: drive shaft

12: wheel component 14: tire

20: housing department 22: housing member

24: after inner side protective cover 26: back outside protective cover

30: stator 35: rotor

40: inboard gear 42: fixing component

44: connecting elements 46: central gear

50: stepped gear (step gear) 52: bottom gears (base gear)

54: top gear (top gear) 60: swing pinion

70: wheel 72 in wheel hub (hub): wheel hub (hub) foreign steamer

80: brake disc 82: lock nut

84: clamp (calliper) portion 90: support bar (strut)

100: damper member 102: hinge member

104: spring 110: underarm (lower arm)

112: upper arm (upper arm) 114: trailing arm (trailing arm)

116: sub-arm 120: analyzer (resolver)

Detailed description of the invention

With reference to the accompanying drawings, an embodiment of the driving means arranged in wheel of the present invention is described. For the facility of explanation, illustrate for as a example by the driving means arranged in wheel of electric automobile. In the process, the thickness of the lines shown in accompanying drawing or the size etc. of element, on illustrating Definition and facility and may show turgidly.It addition, term below is as in view of in the present invention In function and the term that defines, may be different because of user, the intention of operator or convention.Therefore, Definition for this term should content based on this specification be determined.

Fig. 1 is that the most main of the driving means arranged in wheel showing one embodiment of the invention regards Figure, Fig. 2 is along the A-A partial cut of Fig. 1 the inside that shows the driving means arranged in wheel Schematic cross sectional view, Fig. 3 is the letter of the driving means arranged in wheel showing another embodiment of the present invention Wanting front view, Fig. 4 is along the B-B partial cut of Fig. 3 and to show the driving means arranged in wheel Internal schematic cross sectional view.

As shown in Figures 1 and 2, the driving means 1 arranged in wheel of one embodiment of the invention is wrapped Include: be positioned at the drive shaft 10 of the center of rotation of wheel component 12；It is fixed on car body, supplies drive shaft 10 through The housing department 20 installed；It is fixed on the stator 30 of the inner side of housing department 20；With the shape separated with stator 30 State is installed, and the rotor 35 rotated by power supply；It is connected to the inner side of rotor 35, and for drive shaft 10 through inboard gears 40；Along the periphery of inboard gear 40, it is installed on shell in revolvable mode The inner side in portion 20, and engage with inboard gear 40, it is achieved the stepped gear (step slowed down for the first time gear)50；And it is incorporated into drive shaft 10 in spline (spline) mode, and engage with stepped gear 50, Realize the swing pinion 60 that second time is slowed down.

Drive shaft 10 (following, on the basis of Fig. 2) in the horizontal direction is installed on the rotation of wheel component 12 Center.Be provided with tire 14 in the outside of wheel component 12, tire 14 rotates together with wheel component 12.

Housing department 20 is installed on the inner side of wheel component 12, the through housing department of drive shaft 10 20 and along level Direction is installed.

Housing department 20 includes the housing member 22 protruded to the inner side of wheel component 12, blocks housing member 22 Opening after (left side on the basis of Fig. 2) inner side after protective cover 24 and back outside Protective cover 26.

In the inner side of housing member 22, stator 30, rotor 35, inboard gear 40, classification tooth are installed Wheel 50 and swing pinion 60 etc..

Back outside protective cover 26 is installed along the surrounding of housing member 22 with annular, protective cover after inner side 24 inner sides being installed on back outside protective cover 26.

The side (right side on the basis of Fig. 2) of stepped gear 50 is installed on inner side in revolvable mode Protective cover 24 below, and, a part for back outside protective cover 26 bends towards the inner side of housing member 22, Thus the opposite side of stepped gear 50 is installed on back outside protective cover 26 in revolvable mode.

Be fixed on constitute housing department 20 housing member 22 inner side stator 30 and with stator 30 every The center of the rotor 35 that the state opened is installed, consistent with the center of rotation of wheel component 12.

Rotor 35 is rotated by power supply, has inboard gear 40 it addition, connect in the inner side of rotor 35, Thus rotate together with rotor 35.

Drive shaft 10 is installed by through housing department 20, swing pinion 60 and inboard gear 40.

Housing department 20 for the through installation of drive shaft 10 is fixed on car body, and inboard gear 40 surrounds drive shaft The outside of 10 also rotates together with rotor 35.

Inboard gear 40 includes being fixed on inner side fixing of rotor 35 according to an embodiment of the invention Component 42, from fixing component 42 to towards drive shaft 10 inner side extend connecting elements 44, Yi Jicong Connecting elements 44 extends, and to surround the shape extension in the outside of drive shaft 10, and is formed in outside The central gear 46 of profile of tooth.

Fixing component 42 connects with the inner side of the rotor 35 formed with annular installation.To fixing component 42 The connecting elements 44 that inner side extends is connected to central gear 46.Wherein, described central gear 46 surrounds and drives The outside of moving axis 10, is formed with tubulose.

Profile of tooth it is formed with in the outside with stepped gear 50 central gear 46 in opposite directions, thus central gear 46 can engage rotation with the bottom gears 52 of stepped gear 50.

Stepped gear 50, in the periphery along inboard gear 40, is installed on housing department 20 in revolvable mode Inner side.Stepped gear 50 is by engaging with inboard gear 40, it is possible to realize the technology slowed down for the first time In scheme, can be formed in a variety of forms.

This stepped gear 50 is connected by the gear of mutually different diameter and rotates integrally.

Stepped gear 50 includes engaging rotation with central gear 46 according to an embodiment of the invention: Bottom gears 52 and have less than the diameter of bottom gears 52 and rotate together with bottom gears 52 Top gear 54.

The central shaft of stepped gear 50 is fixed on protective cover 24 and outside after the inner side constituting housing department 20 Protective cover 26 below, owing to the diameter of bottom gears 52 is more than the diameter of top gear 54, thus on top Portion's gear 54 engages with swing pinion 60 and while rotation, it is achieved second time is slowed down.

Along the periphery of central gear 46, being provided with multiple stepped gear 50, stepped gear 50 is rotating Mode be installed on the inner side of fixing housing department 20.

Engage the swing pinion 60 rotated with stepped gear 50 and be incorporated into drive shaft 10 in spline mode, from And rotate together with drive shaft 10.

If further describing swing pinion 60 to be combined with the spline mode of drive shaft 10, i.e. edge The length direction (left and right directions on the basis of Fig. 2) of drive shaft 10 is formed with guiding groove (not shown), In the inner side of the swing pinion 60 connected with the lateral surface of drive shaft 10, it is protruding with guide hump and (does not schemes Show).

Owing to the guide hump of swing pinion 60 is inserted in the guiding groove of drive shaft 10, hence allow to rotate Gear 60 moving left and right along guiding groove, the rotary power of swing pinion 60 is delivered to by guide hump Drive shaft 10.

Swing pinion 60 has the external diameter of the external diameter more than central gear 46, engages rotation with top gear 54 Turn, thus central gear 46 is engaged in bottom gears 52, it is achieved slowing down for the first time, swing pinion 60 is nibbled Together in top gear 54, it is achieved second time is slowed down.

The drive shaft 10 being incorporated into swing pinion 60 in spline mode is supported in revolvably with needle bearing The inner side of the central gear 46 supported.

Central gear 46 is formed with tubulose, the driving of installing by the inner side of through this central gear 46 Moving axis 10, takes turns 70 in being connected to be fixed on the wheel hub inside wheel component 12 in spline mode.

By means of two sections of decelerations, the direction of rotation of drive shaft 10 is identical with the direction of rotation of central gear 46, Thus the durability supporting the needle bearing of central gear 46 improves.

Therefore, when drive shaft 10 rotates together with swing pinion 60, the rotary power of drive shaft 10 leads to In crossing wheel hub, wheel 70 is delivered to take turns component 12.

In this wheel hub, wheel 70 is positioned at the wheel hub foreign steamer 72 of the housing member 22 being fixed on housing department 20 Side, thus drive shaft 10 realizes with the spin stabilization of wheel 70 in wheel hub.

The left side of the side (on the basis of Fig. 2) of drive shaft 10 is protruded to the outside of housing department 20, to The direction, inner side of vehicle extends.Brake disc 80 is connected to the driving to the extension of the inner side of vehicle from housing department 20 Moving axis 10.

In the side of drive shaft 10, brake disc 80 is installed successively with lock nut 82, it is achieved brake disc 80 rotate together with drive shaft 10.Alternatively, it is also possible to drive shaft 10 and brake disc 80 are formed as one Body.

Clamp (calliper) portion 84 of the generation brake force that connects with brake disc 80 is installed on outside housing department 20 Face, rear flank protective cover 26.Jaw part 84 connect with brake disc 80 produce brake force technology be in existing skill Composition well known in art, thus description is omitted.

At the back outside protective cover 26 of housing department 20, support bar (strut) 90 He absorbing impact is installed Underarm (lower arm) 110.

Support bar 90 is provided with spring 104, antivibrator in the outside of the damper member 100 absorbing impact Component 100, by means of hinge (hinge) component 102, is articulated in back outside protective cover 26.

Underarm 110 is installed on this back outside protective cover 26, is delivered to from road surface take turns component 12 in traveling Vibrations and impact be delivered to support bar 90 and underarm 110 by housing department 20, thus impact is absorbed.

On the other hand, the rotation to rotor 35 carries out the analyzer 120 of perception and is installed on housing department 20 Inner side, it is thus possible to easily measure the rotation of wheel component 12.

In four-wheel drive car, in the case of front-wheel application McPherson support bar 90, support bar 90 It is incorporated into after housing department 20 with underarm 110 etc., makes the impact being delivered to car body reduce.

It addition, as shown in Figure 3 and Figure 4, in the case of trailing wheel application multi link formula (multi-link), vertical Arm (trailing arm) 114, underarm 110, sub-arm (assist arm) 116 are installed on after housing department 20, The impact being delivered to car body is made to reduce.

It is delivered to the underarm 110 of impact of car body, upper arm (upper arm) 112, trailing arm 114 for reducing And sub-arm 116 is draft hitch known to person of ordinary skill in the field, thus it is detailed to omit it Explanation.

On the other hand, the peace such as the deceleration device being made up of inboard gear 40 and stepped gear 50 etc. of the present invention It is loaded on inside the radial direction of rotor 35, when observing in the vehicle width direction, is more positioned at than hub bearing Vehicle interior side.

Install in the vehicle interior side direction of this deceleration device and possess brake disc 80 and the braking of jaw part 84 Device.

Accordingly, because brake disc 80 and jaw part 84 are installed on and are constituted than by stator 30 and rotor 35 Motor more towards the direction, inner side of vehicle, motor is configured at the inside of wheel component 12, so nothing The design of front-wheel and rear wheel suspension need to be changed, just the brake unit of disc type can be installed on and set in wheel The driving means put.

With reference to the accompanying drawings, the driving means arranged in wheel of one embodiment of the invention is described in detail The duty of 1.

As depicted in figs. 1 and 2, after rotor 35 is rotated by power supply, inboard gear 40 and rotor 35 Rotate together with.

The bottom gears 52 of stepped gear 50 is engaging rotation with the central gear 46 of inboard gear 40 Realize slowing down simultaneously.

That is, the external diameter due to bottom gears 52 is more than the external diameter of central gear 46, so, bottom gears 52 in order to rotate 1 circle, and central gear 46 should rotate more than 1 circle, thus realizes slowing down for the first time.

Top gear 54 integral part of with bottom gears 52 rotates, with this top gear 54 The swing pinion 60 that engagement rotates realizes slow down.

That is, due to the external diameter of external diameter size top gear 54 of swing pinion 60, thus with top tooth The swing pinion 60 that wheel 54 engagement rotates realizes second time slow down.

Rotate together with swing pinion 60 with the drive shaft 10 that spline mode is combined with swing pinion 60, this Plant in drive shaft 10 is incorporated into wheel hub in spline mode and take turns 70, make wheel 70 rotation in wheel hub.

Wheel 70 is fixed on the inner sides of wheel component 12 in wheel hub, thus in wheel hub wheel 70 and wheel component 12 because of The rotation of drive shaft 10 and rotate.

When the rotation of constraint wheel component 12, jaw part 84 starts and connects with brake disc 80, thus sends out Raw brake force, the rotary speed of this driving means 1 arranged in wheel is by means of analyzer (resolver) 120 and measured.

In the case of the support bar 90 of front-wheel application McPherson (Macpherson) of four-wheel drive car, Vibrations and the impact of housing department 20 it is delivered to, by the damper member of support bar 90 by wheel component 12 100 and spring 104 reduce.

As shown in Figure 3 and Figure 4, in the case of trailing wheel application multi link formula, it is being installed on housing department 20 Trailing arm 114 below and underarm 110 and sub-arm 116 absorb the impact being delivered to car body.

According to constructed as described above, one embodiment of the invention in wheel arrange driving means 1 due to The inner side of the housing department 20 being provided with stator 30 and rotor 35 realizes slowing down for the first time and slowing down for the second time, Thus motor realizes integrated with decelerator, it is possible to make parts realize miniaturization.

Further, since the reduced space that motor is installed with decelerator, the driving means arranged in wheel General can be installed on the different front-wheel of suspension and trailing wheel, it is thus possible to save producing cost.

It addition, after realizing slowing down for the first time in engage the stepped gear 50 rotated with inboard gear 40, In engage the swing pinion 60 rotated with stepped gear 50, realize second time slow down, it is thus possible to make to drive Dynamic torque increases, and improves the driving force of motor.

Various embodiments above only in order to technical scheme to be described, is not intended to limit；Although reference The present invention has been described in detail by foregoing embodiments, it will be understood by those within the art that: Technical scheme described in foregoing embodiments still can be modified by it, or to wherein part or Person's all technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution Essence depart from various embodiments of the present invention technical scheme scope.

Although it addition, being to be said for as a example by the driving means arranged in wheel of electric automobile Bright, but this is example, and the driving means arranged in wheel of the present invention can be used for non-electrical Other conveying arrangement of electrical automobile or passenger traffic device.

Claims (6)

1. the driving means that (in-wheel) is set in wheel, it is characterised in that including:

Drive shaft, it is positioned at the center of rotation of wheel component；

Housing department, it is fixed on car body, for the through installation of described drive shaft；

Stator, it is fixed on the inner side of described housing department；

Rotor, it, with the state installation separated with described stator, is rotated by power supply；

Inboard gear, it is connected to the inner side of described rotor, through for described drive shaft；

Stepped gear, it, along the periphery of described inboard gear, is installed on described shell in revolvable mode The inner side in portion, engages with described inboard gear, it is achieved slow down for the first time；And

Swing pinion, it is incorporated into described drive shaft in spline mode, engages with described stepped gear, real Now second time is slowed down, and wherein, described swing pinion drives described drive shaft to rotate.

The driving means arranged in wheel the most according to claim 1, it is characterised in that described Inboard gear includes:

Fixing component, it is fixed on the inner side of described rotor；

Connecting elements, it extends from described fixing component towards the inner side of described drive shaft；And

Central gear, it extends from described connecting elements, and there is to surround the outside of described drive shaft Shape, and it is formed with profile of tooth in outside.

The driving means arranged in wheel the most according to claim 2, it is characterised in that described Stepped gear includes:

Bottom gears, it is engaged in described central gear and rotates；And

Top gear, it has the diameter less than described bottom gears, rotates together with described bottom gears.

The driving means arranged in wheel the most according to claim 3, it is characterised in that:

Described swing pinion has the external diameter of the external diameter more than described central gear, is engaged in described top tooth Wheel rotates.

The driving means arranged in wheel the most according to claim 1, it is characterised in that also wrap Include:

Wheel in wheel hub, it is fixed on the described inner side taking turns component, is connected with described drive shaft in spline mode.

The driving means arranged in wheel the most according to claim 1, it is characterised in that also wrap Include:

Brake disc, it is connected to the described drive shaft protruded to the outside of described housing department；And

Jaw part, it is installed on described housing department, connects with described brake disc, produces brake force.