CN103029564A - In-wheel motor drive unit - Google Patents
In-wheel motor drive unit Download PDFInfo
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- CN103029564A CN103029564A CN201210315205XA CN201210315205A CN103029564A CN 103029564 A CN103029564 A CN 103029564A CN 201210315205X A CN201210315205X A CN 201210315205XA CN 201210315205 A CN201210315205 A CN 201210315205A CN 103029564 A CN103029564 A CN 103029564A
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- output shaft
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- input shaft
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Abstract
The invention provides an in-wheel motor drive unit which is configured in such a manner that even if the great displacement of an output shaft due to failure of a bearing occurs, gear engagement failure may not occur. The input shaft and the output shaft are parallelly arranged in a housing and being inclined to the axial direction, and both ends of the input shaft are supported on the unit housing in a rotation free manner through bearings. The output shaft is supported on the unit housing in a rotation free manner through wheel hub via wheel hub bearings. One end of the input shaft away from the end portion of the output shaft of a wheel is inclined to the axis and overlaps the end, and the motor encloses the output shaft. The overlapped end portions of the input shaft and output shaft are combined through annular curling suspended transmission mechanism in the unit housing, and the annular curling suspended transmission mechanism comprises a pulley fixed on the end portion of the input shaft, a pulley fixed on the end portion of the output shaft and belt arranged between the pulleys.
Description
Technical field
The present invention relates to driver element, so-called in-wheel motor (the in wheel motor) driver element of employed each wheel of electronlmobil that can be travelled by each wheel driving motor, particularly relate to the output shaft avoided in this in-wheel motor driver element around bearing portion displacement and the dysgenic technology that produces.
Background technology
As this in-wheel motor driver element, at present motion has the technology of record in the patent documentation 1 for example.
This in-wheel motor driver element built-in motor reaches by this electric motor driven input shaft, and possesses the output shaft that is supported freely and arranges in the mode outstanding to the outside via bearing portion rotation, to drive combination between these input shafts and output shaft by planetary gear type reduction gear, wheel is combined with the outstanding end of above-mentioned output shaft.
Drive wheel at each and possess in the electronlmobil of this in-wheel motor driver element, during driving motor, it is rotated in retarder and passes to wheel under slowing down, thereby vehicle can be travelled.
Patent documentation 1:(Japan) JP 2008-044437 communique
But, in this in-wheel motor driver element, along axis direction in abutting connection with the bearing portion, retarder, the electrical motor that dispose output shaft, rock because of the bearing portion of output shaft wearing and tearing or deteriorated etc. and to become large, output shaft is when carrying out significantly displacement (inclination, eccentric, direction of principal axis displacement) around the bearing portion, its impact feeds through to retarder interlocking etc., it is bad that the gear of retarder produces engagement, not only become the reason that forms noise and vibration, but also can damage gear, or the generation flank interference, thereby produce anxious the deceleration.
Particularly, driving respectively by the in-wheel motor driver element in the electronlmobil of wheel, above-mentioned urgency is slowed down the vehicle action is changed suddenly, and chaufeur is at a loss.
Therefore, at present, such as patent documentation 1 record, the method that motion is following, additional absorption and suppress output shaft at the tectosome of bearing portion displacement on every side on gear reducer can avoid the problems referred to above, is improved the in-wheel motor driver element.
But, this countermeasure all is countermeasures that the additional tectosome of the gear reducer of in-wheel motor driver element is carried out, bring the maximization, cost of in-wheel motor driver element to improve, the variation of transmission system natural torsion vibration characteristic, this is needed to consider in addition, can not obtain the terms of settlement of essence.
Summary of the invention
The object of the invention is to provide a kind of in-wheel motor driver element, and the structure self that is used for driving in conjunction with the input and output between centers becomes the absorption output shaft can not produce the problems referred to above in the displacement around the bearing portion structure, thus, realizes this solution of problem.
In order to realize this purpose, the following formation of in-wheel motor driver element of the present invention.
At first, in-wheel motor driver element as prerequisite of the present invention is described, it is built-in with electrical motor and reaches by this electric motor driven input shaft, and possesses the output shaft that is supported freely and arranges in the mode outstanding to the outside via hub bearing rotation, and the built-in input and output shaft combining device that will be between described input shaft and described output shaft drives combination makes wheel be combined with the outside jag of described output shaft and use.
The present invention is characterized in that, the described input and output shaft combining device of this in-wheel motor driver element is hung transmission device by the ring-type volume and consisted of.
According to this in-wheel motor driver element of the present invention, consist of the input and output shaft combining device that makes driving combination between input shaft and output shaft owing to hanging transmission device by the ring-type volume, therefore, output shaft is when carrying out displacement (inclination, eccentric, direction of principal axis displacement) around the hub bearing that consists of this bearing portion, can absorb this displacement by the distortion that ring-type volume is hung the endless member self of transmission device, can make it not towards input shaft.
Therefore, even output shaft displacement around hub bearing, it is bad that the driving section of input and output between centers also can not produce the engagement of gear, can prevent from following noise and vibration and then can prevent anxious deceleration the (the unexpected variation of vehicle action) that damage and flank interference because of gear produce in this.
And then, in the present invention, as the input and output shaft combining device, owing to hanging transmission device by using the relatively simple and cheap ring-type volume of structure, can obtain above-mentioned effect, therefore, using as the input and output shaft combining device under the state of gear drive with existing, the countermeasure of the tectosome of the displacement around the additional hub bearing for absorbing output shaft is compared, can realize miniaturization and cheapization of in-wheel motor driver element, and transmission system natural torsion vibration characteristic is changed, thereby can realize above-mentioned effect.
Description of drawings
Fig. 1 is the summary vertical profile lateral plan of the in-wheel motor driver element summary of expression first embodiment of the invention;
Fig. 2 is the summary vertical profile lateral plan of the in-wheel motor driver element summary of expression second embodiment of the invention;
Fig. 3 is the summary vertical profile lateral plan of the in-wheel motor driver element summary of expression third embodiment of the invention;
Fig. 4 is the summary vertical profile lateral plan of the in-wheel motor driver element summary of expression fourth embodiment of the invention;
Fig. 5 is the summary vertical profile lateral plan of the in-wheel motor driver element summary of expression fifth embodiment of the invention.
Nomenclature
1 unit housings
2 input shafts
3 output shafts
4,5 bearings
6 wheel hubs
The radial thrust bearing (hub bearing) of group more than 7
8 jam nuts
9 wheel bolts
10 wheel nuts
11 brake discs
12 wheels
13 electrical motors
The 13s stator
The 13r rotor
14 ring-types volume is hung transmission device (input and output shaft combining device)
15,16 pulleys or sprocket wheel
17 band or chains (endless flexible body)
18 ball and sockets
21 ring-types volume is hung transmission device (input and output shaft combining device)
22,23 pulleys or sprocket wheel
24,25 pulleys or sprocket wheel (idle pulley swivel)
26 band or chains (input shaft side ring shape flexible body)
27 band or chains (output shaft side ring shape flexible body)
32 bearings (hub bearing)
41,51 power on-off systems
The specific embodiment
Below, based on embodiment shown in the drawings embodiments of the present invention are described in detail.
(formation of the first embodiment)
Fig. 1 is the summary vertical profile lateral plan of main portion of the in-wheel motor driver element of expression first embodiment of the invention.
In the figure, the unit housings of 1 expression in-wheel motor driver element makes input shaft 2 and output shaft 3 mutually along footpath direction biasing in this unit housings 1, and configured in parallel and arranging.
Make the end of the output shaft 3 that approaches with jam nut 8 and wheel hub 6 outstanding to the outside from unit housings 1, brake disc 11 and wheel 12 are connect with one heart together by wheel bolt 9 and wheel nut 10 in the outstanding end of wheel hub 6.
This electrical motor 13 is by consisting of with the chimeric circular stator 13s that sets firmly of the interior week of unit housings 1 with at the rotor 13r that has diameter clearance and concentric arrangement interior week of this circular stator 13s, and makes rotor 13r and input shaft 2 combinations.
This ring-type volume is hung transmission device 14 and is equivalent to input and output shaft combining device of the present invention, therefore, its pulley by the above-mentioned end of being fixed in input shaft 2 (or sprocket wheel) 15, be fixed in the pulley (or sprocket wheel) 16 of the above-mentioned end of output shaft 3 and the band as the endless flexible body (or chain) 17 that hang between them consists of.
The draft hitch elastic support of above-mentioned in-wheel motor driver element by comprising ball and socket 18 be in vehicle body, and, around the center pin axis Kp by ball and socket 18 centers, hang on vehicle body in the mode that can turn to wheel 12.
(effect of the first embodiment)
If to the stator 13s energising of electrical motor 13, then pass through the rotor 13r from its electromagnetic force rotary driving motor 13.
The rotary driving force of rotor 13r is hung the pulley (or sprocket wheel) 15 of transmission device 14 towards the ring-type volume via input shaft 2, afterwards, band (or chain) 17 and the pulley (or sprocket wheel) 16 of hanging transmission device 14 via the ring-type volume arrive output shaft 3.
By above-mentioned gearing, ring-type volume hang transmission device 14 will be from electrical motor 13 to input shaft the ratio that determines with the diameter (number of teeth) by the diameter (number of teeth) of pulley (or sprocket wheel) 15 and pulley (or sprocket wheel) 16 of 2 rotation slow down and transmit to output shaft 3.Rotation to output shaft 3 passes to wheel 12 via wheel hub 6 and wheel bolt 9 with its combination, thereby vehicle can be travelled.
(effect of the first embodiment)
In above-mentioned in-wheel motor driver element, replace the ring-type volume to hang transmission device 14, in the situation that as existing, use train of reduction gears as the input and output shaft combining device, bearing portion (wheel hub 6 and hub bearing 7) wearing and tearing with respect to the output shaft 3 of unit housings 1, or become large because of deteriorated etc. rocking, output shaft 3 is at bearing portion (6,7) carrying out significantly displacement on every side (tilts, eccentric, the direction of principal axis displacement) time, its impact feeds through to train of reduction gears, and it is bad that the gear of train of reduction gears produces engagement, not only become the reason of noise and vibration, but also can damage gear, or the generation flank interference, thus, wheel 12 can suddenly slow down.
Particularly, in the situation that the in-wheel motor driver element is used for electronlmobil, because this in-wheel motor driver element individually drives wheel, therefore, the urgency of above-mentioned wheel 12 is slowed down the vehicle action is changed suddenly, and chaufeur is at a loss.
But, in the present embodiment, hang transmission device 14 as the input and output shaft combining device of in-wheel motor driver element owing to using the ring-type volume, therefore, at the bearing portion (wheel hub 6 and hub bearing 7) relevant with output shaft 3 because of wearing and tearing and larger the rocking of generation such as deteriorated, output shaft 3 is when producing significantly displacement (inclination, eccentric, direction of principal axis displacement) around the bearing portion (6,7), can hang transmission device 14(endless flexible body 17 self by ring-type volume) distortion this displacement is absorbed, can not make it towards input shaft 2.
Therefore, even output shaft 3 displacement around bearing portion (wheel hub 6 and hub bearing 7), being responsible for input and output shaft 2,3 the ring-type volume of driving combination hangs transmission device 14 also can not to produce the engagement of gear bad, therewith above-mentioned noise and vibration can be prevented from following, and then anxious deceleration the (suddenly variation of vehicle action) because of damage and the flank interference generation of gear can be prevented.
And, in the present embodiment, as the input and output shaft combining device, can obtain above-mentioned effect by using the relatively simple and cheap ring-type volume of structure to hang transmission device 14, therefore, using as the input and output shaft combining device under the state of gear drive with existing, the countermeasure of the tectosome of the displacement around the additional hub bearing for absorbing output shaft is compared, can realize miniaturization and cheapization of in-wheel motor driver element, and transmission system natural torsion vibration characteristic is changed, thereby can realize above-mentioned effect.
In addition, ring-type volume is hung transmission device 14 only by the ratio between the diameter (number of teeth) of the diameter (number of teeth) of pulley (or sprocket wheel) 15 and pulley (or sprocket wheel) 16 is changed, just can not increase number of parts and with transmitting ratio from the deceleration Set arbitrarily to accelerating, the degree of freedom of design significantly improves.
And then, ring-type volume is hung transmission device 14 to be become with respect to endless flexible body 17 and skids or cut structure because of the excessive excessive torque that inertia etc. causes, the formation that the breakage that thus, the in-wheel motor driver element is easily become can not brought by excessive torque affects.Therefore, the ring-type volume is hung the high strength that transmission device 14 there is no need to manufacture expection safety, can realize its light weight and cheapization.
In addition, formation according to the present embodiment, owing to making input shaft 2 with respect to the biasing of output shaft 3 radius vector directions top, therefore, easily guarantee to configure the space of ball and socket 18 in the lower side of in-wheel motor driver element, even in the situation that wheel 12 is wheel flutter, the in-wheel motor driver element of the present embodiment also can easily be suitable for.
And then, formation according to the present embodiment, owing to making input shaft 2 with respect to the biasing of output shaft 3 radius vector directions top, therefore, the electrical motor 13 that arranges in the mode of surrounding input shaft 2 is positioned at the top away from the road surface, reduces strength member and is electrical motor 13 because of be damaged dangerous such as road surface interference and slungshot and can improve reliability.
In addition, owing to making input shaft 2 with respect to the biasing of output shaft 3 radius vector directions top, therefore, taking in the position of the unit housings 1 of electrical motor 13 will more extensively expose to the outside, because of with the cooling effectiveness that can improve electrical motor 13 that contacts of air, and can prolong the maximum output duration of electrical motor 13 and improve the rideability of vehicle.
(formation of the second embodiment)
Fig. 2 is the in-wheel motor driver element of second embodiment of the invention, among Fig. 2, for Fig. 1 in the part that plays a role in the same manner mark prosign and represent.
In the first above-mentioned embodiment, as shown in Figure 1, make input shaft 2 and output shaft 3 mutual radius vector direction biasings, but in the present embodiment, with input shaft 2 and output shaft 3 coaxial corresponding configurations.
In the present embodiment, input shaft 2 also is rotatably freely supported on unit housings 1 by near the bearing 4,5 the two ends, and output shaft 3 also is rotatably freely supported on unit housings 1 by hub bearing (organizing radial thrust bearing) 7 with the part in the unit housings 1 via wheel hub 6 more.
In addition, configure in the mode of surrounding input shaft 2 and to be provided with electrical motor 13, the circular stator 13s that this electrical motor 13 was set firmly by the interior week that is embedded in unit housings 1 and the having diameter clearance interior week of this circular stator 13s and the rotor 13r of concentric arrangement consists of makes rotor 13r and input shaft 2 combinations.
And, connect together with one heart brake disc 11 and wheel 12 at the output shaft 3 of giving prominence to the outside from unit housings 1 and the end of wheel hub 6 by wheel bolt 9 and wheel nut 10.
But, hang transmission device 21 by following ring-type volume between the corresponding end of input shaft 2 and output shaft 3 and drive combination.Namely, corresponding end at input shaft 2 and output shaft 3 sets firmly respectively pulley (or sprocket wheel) 22 of drive side and the pulley (or sprocket wheel) 23 of slave end, and is arranged on the pulley as the idle pulley swivel (or sprocket wheel) 24,25 with respect to idle running around the parallel axis of the axis of input shaft 2 and output shaft 3.
Pulley (or sprocket wheel) 24,25 is made as same specification, is disposed at respectively the axis direction position identical with the pulley (or sprocket wheel) 23 of pulley (or sprocket wheel) 22 of drive side and slave end, and mutually one combination.
And, between the pulley (or sprocket wheel) 24 that pulley (or sprocket wheel) 22 and the idle pulley of drive side are used, set up the band (or chain) 26 as input shaft side ring shape flexible body, in addition, between the pulley (or sprocket wheel) 25 that pulley (or sprocket wheel) 23 and the idle pulley of slave end are used, set up band (or chain) 27 as output shaft side ring shape flexible body.
By above formation, the ring-type volume is hung between the transmission device 21 corresponding ends of driving in conjunction with input shaft 2 and output shaft 3, consists of input and output shaft combining device of the present invention.
(effect of the second embodiment)
From electrical motor 13(stator 13r) rotary driving force hang the pulley (or sprocket wheel) 22 of transmission device 21 towards ring-type volume via input shaft 2, afterwards, hang band (or chain) 26 and pulley (or sprocket wheel) 24,25 and band (or chain) 27 and pulley (or sprocket wheel) the 23 arrival output shafts 3 of transmission device 21 via the ring-type volume.
By above-mentioned gearing, ring-type volume hang transmission device 21 will be from electrical motor 13 to input shaft the ratio that determines with the diameter (number of teeth) by the diameter (number of teeth) of pulley (or sprocket wheel) 22 and pulley (or sprocket wheel) 23 of 2 rotation slow down and be passed to output shaft 3.
Rotation to output shaft 3 is passed to wheel 12 via wheel hub 6 and wheel bolt 9 with its combination, thereby vehicle can be travelled.
(effect of the second embodiment)
In above-mentioned in-wheel motor driver element, hang transmission device 21 as the input and output shaft combining device of in-wheel motor driver element owing to using the ring-type volume, therefore, the bearing portion (wheel hub 6 and hub bearing 7) relevant with output shaft 3 produces larger rocking because of wearing and tearing and deteriorated etc., output shaft 3 is when carrying out significantly displacement (inclination, eccentric, direction of principal axis displacement) around the bearing portion (6,7), this displacement can be hung transmission device 21(output shaft side ring shape flexible body 27 self by ring-type volume) distortion absorb, do not make it towards input shaft 2.
Therefore, even output shaft 3 displacement around bearing portion (wheel hub 6 and hub bearing 7), being responsible for input and output shaft 2,3 the ring-type volume of driving combination hangs transmission device 21 also can not to produce the engagement of gear bad, above-mentioned noise and vibration in this can be prevented from following, and then anxious deceleration the (suddenly variation of vehicle action) because of damage and the flank interference generation of gear can be prevented.
And, in the present embodiment, as the input and output shaft combining device, can obtain above-mentioned effect by using the relatively simple and cheap ring-type volume of structure to hang transmission device 21, therefore, using as the input and output shaft combining device under the state of gear drive with existing, the countermeasure of the tectosome of the displacement around the additional hub bearing for absorbing output shaft is compared, can realize miniaturization and cheapization of in-wheel motor driver element, and transmission system natural torsion vibration characteristic is changed, thereby can realize above-mentioned effect.
In addition, ring-type volume is hung transmission device 21 and is only changed by the diameter (number of teeth) to pulley (or sprocket wheel) 22～25, just can not increase number of parts and with input and output between centers transmitting ratio from the deceleration Set arbitrarily to acceleration, the degree of freedom of design significantly improves.
And then, ring-type volume is hung transmission device 21 to be become the excessive excessive torque that causes because of inertia etc. with respect to endless flexible body 26,27 and skids or cut structure, the formation that the breakage that thus, the in-wheel motor driver element is easily become can not brought by excessive torque affects.Therefore, the ring-type volume is hung the high strength that transmission device 21 there is no need to manufacture expection safety, can realize its light weight and cheapization.
In addition, formation according to the present embodiment, because with input shaft 2 and output shaft 3 coaxial corresponding configurations, by the corresponding end of 2 row input and output shaft side bands (or chain), 26,27 drivings in conjunction with these two axles, therefore, can Set arbitrarily as the pulley (or sprocket wheel) 24,25 of idle pulley swivel and the axle base between the input and output shaft 2,3, be conducive to set significantly input and output between centers transmitting ratio and improve tractive performance.
And, because with input shaft 2 and output shaft 3 coaxial corresponding configurations, at the input shaft 2 sides configuration electrical motor 13 of hanging transmission device 21 away from driving in conjunction with the ring-type volume of the corresponding end of these two axles, therefore, there are not the external diameter parts such as restrictions motor 13, can be by the large footpath increasing motor torque of electrical motor 13, in the raising that also can realize tractive performance aspect this.
In addition, because identical reason, take in the position of the unit housings 1 of electrical motor 13 and can expose significantly to the outside, can improve the cooling effectiveness of the electrical motor 13 that contact with air, the maximum output duration of prolongation electrical motor 13 also improves the rideability of vehicle.
(formation of the 3rd embodiment)
Fig. 3 is the in-wheel motor driver element of third embodiment of the invention, among Fig. 3, the part mark prosign that plays a role in the same manner with Fig. 1 is represented.
In the present embodiment, identical with above-mentioned the first embodiment (Fig. 1), make the 3 mutual radius vector directions biasings of input shaft 2 and output shaft, but make input shaft 2 and output shaft 3 different from the first embodiment (Fig. 1), be disposed at roughly the same axis direction position.
One end of output shaft 3 is outstanding to the outside from unit housings 1, and this jag is fixed with wheel hub 6.And, on wheel hub 6, be linked with together with one heart brake disc 11 and wheel 12 by wheel bolt 9 and wheel nut 10.
With surround bearing 4,5 the mode of part of input shaft 2 configures and electrical motor 13 is set, this rotor 13r and input shaft 2 combinations.
The ring-type volume is hung transmission device 14 and is equivalent to input and output shaft combining device of the present invention, therefore, identical with among Fig. 1 is by the pulley (or sprocket wheel) 15 of the above-mentioned end of being fixed in input shaft 2, be fixed in the pulley (or sprocket wheel) 16 of the above-mentioned end of output shaft 3 and consist of as the band (or chain) 17 that is erected at the endless flexible body between them.
But different from the first embodiment among Fig. 1, the ring-type volume of the present embodiment is hung transmission device 14 and is disposed at a side away from wheel hub 6 across electrical motor 13.
Above-mentioned in-wheel motor driver element by the draft hitch elastic support that comprises ball and socket 18 in vehicle body, and, around the center pin axis Kp by ball and socket 18 centers, hang on vehicle body in the mode that can turn to wheel 12.
(effect of the 3rd embodiment)
Electrical motor 13(rotor 13r) rotary driving force is hung the pulley (or sprocket wheel) 15 of transmission device 14 towards the ring-type volume via input shaft 2, afterwards, band (or chain) 17 and the pulley (or sprocket wheel) 16 of hanging transmission device 14 through the ring-type volume arrive to output shaft 3, thereby vehicle can be travelled.
(effect of the 3rd embodiment)
In above-mentioned in-wheel motor driver element, hang transmission device 14 as the input and output shaft combining device of in-wheel motor driver element owing to using the ring-type volume, therefore, the bearing portion (bearing 31,32) relevant with output shaft 3 produces larger rocking because of wearing and tearing and deteriorated etc., output shaft 3 is when carrying out significantly displacement (inclination, eccentric, direction of principal axis displacement) around the bearing portion (31,32), can hang transmission device 14(output shaft side ring shape flexible body 17 self by ring-type volume) distortion absorb this displacement, can not make it towards input shaft 2.
Therefore, even output shaft 3 displacement around bearing portion (31,32), being responsible for input and output shaft 2,3 the ring-type volume of driving combination hangs transmission device 14 also can not to produce the engagement of gear bad, can prevent from following above-mentioned noise and vibration in this, and then can prevent to play the effect identical with the first embodiment because of the damage of gear and the anxious deceleration of flank interference generation (suddenly variation of vehicle action).
And, in the present embodiment, because ring-type volume is hung transmission device 14 and is disposed at axis direction position away from wheel hub 6 across electrical motor 13, therefore, the angle of cut variable quantity that the output shaft 3 of output shaft 3 when the displacement on every side of bearing portion (31,32) hung transmission device 14 with respect to the ring-type volume diminishes, can make ring-type volume hang transmission device 14(output shaft side ring shape flexible body 17 self) above-mentioned distortion reduce, and can improve its durability.
In addition, because output shaft 3 is rotatably freely supported on unit housings 1 by the pair of bearings 31,32 of separating significantly at axis direction, diminish with respect to these two bearings 31,32 the bearing capacity that requires, can realize these two bearings 31,32 path and miniaturization.
And, because input shaft 2 and output shaft 3 are disposed at roughly the same axis direction position, therefore, these two axles 1,2 and mutually setover to axis direction as shown in Figure 1, or the situation that mutually is disposed at as shown in Figure 2 coaxial corresponding relation compares, and the axial length of in-wheel motor driver element is significantly shortened.
Thus, take the axial length of identical in-wheel motor driver element as the basis, can increase the axial length of electrical motor 13, can corresponding increasing motor output, can realize the raising of rideability.
(formation of the 4th embodiment)
Fig. 4 is the in-wheel motor driver element of fourth embodiment of the invention, and among Fig. 4, the part mark prosign that plays a role in the same manner for Fig. 1,3 represents.
In the present embodiment, identical with above-mentioned the first embodiment (Fig. 1) and the 3rd embodiment (Fig. 3), make input shaft 2 and output shaft 3 mutual radius vector direction biasings, and identical with the 3rd embodiment (Fig. 3), input shaft 2 and output shaft 3 are disposed at roughly the same axis direction position.
In addition, identical with the 3rd embodiment (Fig. 3), input shaft 2 is rotatably freely supported on unit housings 1 by near the bearing 4,5 the two ends, in the mode of surrounding input shaft 2 electrical motor 13 is set, and makes rotor 13r and input shaft 2 combinations.
Identical with the 3rd embodiment (Fig. 3), output shaft 3 is rotatably freely supported on unit housings 1 by near the pair of bearings 31,32 the two ends.
But wheel hub 6 and output shaft 3 are coaxial corresponding and can configure with the relative rotation, are rotatably freely supported on unit housings 1 by many groups radial thrust bearing 6 identical with the first embodiment (Fig. 1) and the second embodiment (Fig. 2).
Make an end of wheel hub 6 outstanding to the outside from unit housings 1, connect together with one heart brake disc 11 and wheel 12 at this jag by wheel bolt 9 and wheel nut 10.
Make power on-off system 41 between between the coaxial corresponding end of output shaft 3 and wheel hub 6, this power on-off system 41 is automatic centrifugal clutch, magnetic clutch, hydraulic clutch or electronic control clutch etc., makes between the coaxial corresponding end of output shaft 3 and wheel hub 6 to carry out combination under transmitting torque control.
At this, power on-off system 41 is when above-mentioned transmitting torque control, in the association of the tension force of endless flexible body 17 and intensity, or in the association that temperature, overload, the mistake of electrical motor 13 are rotated, or in the association of the running of slip controller (ABS) and vehicle operation controller (VDC), passive or carry out on one's own initiative this control.
The purpose that is made as this control is; realize that in the association of the tension force of endless flexible body 17 and intensity it is two vertical; can realize the friction attenuating that large torque correspondence or tension force reduce; or realize that the temperature that prevents electrical motor 13 rises; overload; cross rotation; thereby protection electrical motor 13; or cross high-wheeled transmitting torque for fear of move unstable restriction because of the poor vehicle that causes of propulsive effort between wheel to transmitting torque; or when slip controller (ABS) and vehicle operation controller (VDC) action; to be made as 0 to the electrical motor transmitting torque of wheel, improve the action response of these two devices.
The draft hitch elastic support of above-mentioned in-wheel motor driver element by comprising ball and socket 18 be in vehicle body, and, around the center pin axis Kp by ball and socket 18 centers, hang on vehicle body in the mode that can turn to wheel 12.
(effect of the 4th embodiment)
Electrical motor 13(rotor 13r) rotary driving force is hung the pulley (or sprocket wheel) 15 of transmission device 14 towards the ring-type volume via input shaft 2, afterwards, band (or chain) 17, pulley (or sprocket wheel) 16 and the power on-off system 41 of hanging transmission device 14 through the ring-type volume arrive to wheel hub 6(wheel 12), thus vehicle can be travelled.
(effect of the 4th embodiment)
In above-mentioned in-wheel motor driver element, owing to being identical formation with the 3rd embodiment shown in Figure 3 basically, therefore, can realize the effect that the 3rd embodiment is whole.
And, in the present embodiment, make power on-off system 41 between between the coaxial corresponding end of output shaft 3 and wheel hub 6, and consist of in the mode that can control passively its binding force, therefore, can take into account the tension force of endless flexible body 17 and intensity the two, can realize that the friction that large torque correspondence or tension force reduce reduces.
In addition; consisting of of binding force by can being controlled on one's own initiative 6 of output shaft 3 and wheel hubs by power on-off system 41; thereby can prevent temperature rising, overload, the excessively rotation of electrical motor 13; realize protection electrical motor 13; in addition; unstable the restriction to transmitting torque for fear of the vehicle action that causes because propulsive effort between wheel is poor crossed high-wheeled transmitting torque; or when slip controller (ABS) and vehicle operation controller (VDC) action, will be made as 0 to the electrical motor transmitting torque of wheel, can improve the action response of these two devices.
(formation of the 5th embodiment)
Fig. 5 is the in-wheel motor driver element of fifth embodiment of the invention, among Fig. 5, to Fig. 1,3 in the part mark prosign that plays a role in the same manner represent.
In the present embodiment, identical with above-mentioned the first embodiment (Fig. 1) and the 3rd embodiment (Fig. 3), make input shaft 2 and output shaft 3 mutual radius vector direction biasings, identical with the 3rd embodiment (Fig. 3), input shaft 2 and output shaft 3 are disposed at roughly the same axis direction position.
In addition, identical with the 3rd embodiment (Fig. 3), input shaft 2 is rotatably freely supported on unit housings 1 by near the bearing 4,5 the two ends, in the mode of surrounding input shaft 2 electrical motor 13 is set, with rotor 13r and input shaft 2 combinations, but the pulley (or sprocket wheel) 15 of the ring-type of input and output shaft 2,3 driving combinations volume being hung transmission device 14 and the coaxial corresponding configuration in end away from the input shaft 2 of electrical motor 13.
Make power on-off system 51 between between the coaxial corresponding end of input shaft 2 and pulley (or sprocket wheel) 15, this power on-off system 51 is automatic centrifugal clutch, magnetic clutch, hydraulic clutch or electronic control clutch etc., makes 15 combinations under transmitting torque control of input shaft 2 and pulley (or sprocket wheel).
At this, power on-off system 51 is when above-mentioned transmitting torque control, identical with the power on-off system 41 among Fig. 4, in the association of the tension force of endless flexible body 17 and intensity, or in the association that temperature, overload, the mistake of electrical motor 13 are rotated, or in the association of the action of slip controller (ABS) and vehicle operation controller (VDC), passive or carry out on one's own initiative this control.
With the pulley (or sprocket wheel) 15 of input shaft 2 coaxial corresponding configurations, the bearing 52,53 by its two ends is rotatably freely supported on unit housings 1.
Identical with among Fig. 3, output shaft 3 also plays a role the part in the unit housings 1 by pair of bearings 31,32(bearing 32 as hub bearing) be rotatably freely supported on unit housings 1.
Make an end of output shaft 3 outstanding to the outside from unit housings 1, be fixed with wheel hub 6 at this jag.And, connect together with one heart brake disc 11 and wheel 12 at wheel hub 6 by wheel bolt 9 and wheel nut 10.
The draft hitch elastic support of above-mentioned in-wheel motor driver element by comprising ball and socket 18 be in vehicle body, and, around the center pin axis Kp by ball and socket 18 centers, hang on vehicle body in the mode that can turn to wheel 12.
(effect of the 5th embodiment)
Electrical motor 13(rotor 13r) rotary driving force is hung the pulley (or sprocket wheel) 15 of transmission device 14 towards the ring-type volume via power on-off system 51 from input shaft 2, afterwards, band (or chain) 17 and the pulley (or sprocket wheel) 16 of hanging transmission device 14 through the ring-type volume arrive to output shaft 3, thereby vehicle can be travelled.
(effect of the 5th embodiment)
In above-mentioned in-wheel motor driver element, owing to being identical formation with the 3rd embodiment shown in Figure 3 basically, therefore, can realize the effect that the 3rd embodiment is whole.
And, in the present embodiment, make power on-off system 51 between between the coaxial corresponding end of input shaft 2 and pulley (or sprocket wheel) 15, and consist of in the mode that can control passively its binding force, therefore, can take into account the tension force of endless flexible body 17 and intensity the two, can realize that the friction that large torque correspondence or tension force reduce reduces.
In addition; by by power on-off system 51 also on one's own initiative the mode of the binding force of 15 on control inputs axle 2 and pulley (or sprocket wheel) consist of; thereby the temperature that can prevent electrical motor 13 rises; overload; cross rotation; realize protection electrical motor 13; in addition; unstable the restriction to transmitting torque for fear of the vehicle action that causes because propulsive effort between wheel is poor crossed high-wheeled transmitting torque; or when slip controller (ABS) and vehicle operation controller (VDC) action, will be made as 0 to the electrical motor transmitting torque of wheel, can improve the action response of these two devices.
Claims (6)
1. in-wheel motor driver element, being built-in with electrical motor reaches by this electric motor driven input shaft, and possesses the output shaft that is supported freely and arranges in the mode outstanding to the outside via hub bearing rotation, and the built-in input and output shaft combining device that will be between described input shaft and described output shaft drives combination, make wheel be combined with the outside jag of described output shaft and use, it is characterized in that
Described input and output shaft combining device is hung transmission device by the ring-type volume and is consisted of.
2. in-wheel motor driver element as claimed in claim 1 is characterized in that,
Described input shaft and described output shaft are setovered and in parallel to each other configuration in the footpath direction,
Described input and output shaft combining device is by consisting of hanging transmission device by the ring-type volume of endless flexible body driving combination between described input shaft and described output shaft.
3. in-wheel motor driver element as claimed in claim 1 is characterized in that,
The coaxial accordingly configuration of described input shaft and described output shaft,
The utilization of described input and output shaft combining device with between the corresponding end of described input shaft and described output shaft by the input shaft side ring shape flexible body that is set up in input shaft side corresponding end and idle pulley swivel and be set up in this idle pulley swivel and ring-type volume that the output shaft side ring shape flexible body of output shaft side corresponding end drives combination is hung transmission device and consisted of.
4. in-wheel motor driver element as claimed in claim 2 is characterized in that,
The utilization of described input and output shaft combining device will be hung transmission device away from the ring-type volume that drives combination by the endless flexible body between the end of the output shaft of described wheel hub and the described input shaft and be consisted of.
5. in-wheel motor driver element as claimed in claim 4 is characterized in that,
The axis direction position of described motor configurations between described wheel hub and described ring-type volume extension transmission device.
6. such as the in-wheel motor driver element described in the claim 1～5 each, it is characterized in that,
From described electrical motor to the transmission system of described wheel hub, be fitted with the power on-off system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011213645A JP2013071687A (en) | 2011-09-29 | 2011-09-29 | In-wheel motor driving unit |
| JP2011-213645 | 2011-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103029564A true CN103029564A (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210315205XA Pending CN103029564A (en) | 2011-09-29 | 2012-08-30 | In-wheel motor drive unit |
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| Country | Link |
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| JP (1) | JP2013071687A (en) |
| CN (1) | CN103029564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109476228A (en) * | 2016-08-01 | 2019-03-15 | Ntn株式会社 | The connection structure of in-wheel motor drive unit and in-wheel motor drive unit and wheel |
| CN109789748A (en) * | 2016-09-23 | 2019-05-21 | Ntn株式会社 | In-wheel motor drive unit suspension frame structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667896A (en) * | 2017-10-17 | 2019-04-23 | 博格华纳公司 | Drive module |
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| CN101159397A (en) * | 2006-10-04 | 2008-04-09 | 丰田自动车株式会社 | Wheel assembly with in-wheel motor |
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| CN109789748A (en) * | 2016-09-23 | 2019-05-21 | Ntn株式会社 | In-wheel motor drive unit suspension frame structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013071687A (en) | 2013-04-22 |
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