CN203532697U - Vehicle power driving device - Google Patents
Vehicle power driving device Download PDFInfo
- Publication number
- CN203532697U CN203532697U CN201320678709.8U CN201320678709U CN203532697U CN 203532697 U CN203532697 U CN 203532697U CN 201320678709 U CN201320678709 U CN 201320678709U CN 203532697 U CN203532697 U CN 203532697U
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- China
- Prior art keywords
- bearing
- gear
- assembly department
- bearing assembly
- axle housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- Mounting Of Bearings Or Others (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a vehicle power driving device. Reinforcing ribs (1d) extending towards the outer side along the radial direction of a semicircle from the outer circumference of a bearing installing part (1c) are arranged within the range of the semicircle formed by rotating through 90 degrees clockwise and anticlockwise respectively relative to the stress direction (the Z direction) of the bearing installing part (1c) with the center of a bearing (23) pressed into the bearing installing part (1c) serving as the circle center on a driving axle housing (1) in the vehicle power driving device. According to the vehicle power driving device, rigidity of the bearing installing part (1c) can be improved, and creepage of an outer ring of the bearing (23) is avoided.
Description
Technical field
The utility model relates to Vehicular power transmission system.
Background technique
In Vehicular power transmission system, generally all there is driving axle housing.In driving axle housing, be provided with and carry out powerdriven gear mechanism.This gear mechanism mainly comprises countershaft drive gear, counter shaft driven gear, driving pinion and differential mechanism gear ring etc.Wherein, differential mechanism gear ring and the interlock of driving pinion phase, and the transmission of power of self-driven small gear is given the output shaft being connected with self in the future.The bearing that supports this output shaft is pressed in the bearing assembly department being formed on driving axle housing.Owing to acting on, the input torque of bearing of supporting differential mechanism gear ring and output shaft is very large, so, for fixing the bearing assembly department of this bearing, must there is enough rigidity.
Yet, in order to comply with the requirement of the miniaturization of driving axle housing, need to make bearing and the miniaturization of bearing assembly department and lightweight.So, the rigidity of bearing assembly department just can reduce, thereby the surface pressure between bearing assembly department and bearing outer ring can reduce, and bearing outer ring easily produces creep (distortion).And if bearing outer ring produces creep, the gap value of output shaft can increase, and easily causes the interlocking pattern between gear bad.
Model utility content
In order to solve the problems of the technologies described above, the purpose of this utility model is, a kind of Vehicular power transmission system that can prevent bearing outer ring generation creep is provided.
As the technological scheme solving the problems of the technologies described above, the utility model provides a kind of Vehicular power transmission system, this Vehicular power transmission system comprises, the 1st gear, the 2nd gear with described the 1st gear phase interlock, the bearing of the running shaft that supporting is connected with described the 2nd gear, and be formed with the driving axle housing that the bearing assembly department that described bearing uses is installed, it is characterized in that: described the 2nd gear is on the point of contact with described the 1st Gear Contact, bearing the 1st active force that described the 1st gear applies and the 3rd active force of the 2nd active force synthesized, described the 1st active force is the power of excircle tangent direction of described the 2nd gear at described point of contact place, described the 2nd active force is the power radially of described the 2nd gear at described point of contact place, on described driving axle housing, take the center that is pressed into the bearing in described bearing assembly department is the center of circle, in the scope of the semicircle that the direction of relatively described the 3rd active force forms with counter clockwise direction 90-degree rotation to clockwise direction respectively, be provided with the stiffening rib that the radially outward side from described bearing assembly department along described semicircle is extended.
The advantage with the Vehicular power transmission system of the present utility model of said structure is, owing to being provided with the stiffening rib of the radially outward side extension from bearing assembly department along described semicircle, so, the rigidity of bearing assembly department is improved, surface pressure between bearing assembly department and bearing outer ring increases, thereby can prevent that the situation of bearing outer ring generation creep from occurring.
In above-mentioned Vehicular power transmission system of the present utility model, be preferably, the described stiffening rib arranging on described driving axle housing is a plurality of.Based on this structure, can, by means of a plurality of stiffening ribs, further improve the rigidity of the radial outside part of bearing assembly department.
Accompanying drawing explanation
Fig. 1 means the figure of inside of driving axle housing of the Vehicular power transmission system of mode of execution of the present utility model.
Fig. 2 means the part enlarged view of the inside of the driving axle housing in mode of execution.
Fig. 3 means the bearing assembly department of the driving axle housing in mode of execution and the part enlarged view of stiffening rib.
Fig. 4 means the bearing assembly department of the driving axle housing in mode of execution and the curve of the surface pressure between bearing outer ring.
Fig. 5 is the part enlarged view of driving axle housing of the Vehicular power transmission system of comparative example.
Fig. 6 means the bearing assembly department of the driving axle housing in comparative example and the curve of the surface pressure between bearing outer ring.
Embodiment
Below, with reference to accompanying drawing, embodiment of the present utility model is described.The Vehicular power transmission system of present embodiment (being designated hereinafter simply as actuating unit) 100 for by the transmission of power of motor (not shown) that is installed in front part of vehicle to left and right front-wheel.As shown in Figures 1 and 2, actuating unit 100 possesses driving axle housing 1.The inside of this driving axle housing 1 is holding torque-converters (not shown), oil pump 2, advance and retreat switching unit (not shown), belt-type stepless change unit (hereinafter referred to as CVT) (not shown) and is including the gear mechanism of a plurality of gears (as the gear row of driving mechanism) 3 etc.The bottom of driving axle housing 1 is provided with oil sump 4.
Be equiped with in the vehicle of actuating unit 100, from the power of motor, by torque-converters and advance and retreat switching unit, be passed to CVT, after having carried out stepless change by CVT, then via gear mechanism 3, be passed to left and right front-wheel.
Countershaft drive gear 5 is fixed on one end of the countershaft 11 being connected with CVT.Countershaft drive gear 5 and the interlock of counter shaft driven gear (not shown) phase.Counter shaft driven gear is fixed on one end of the jack shaft 12 extending abreast with countershaft 11.On the other end of jack shaft 12, be fixed wtih driving pinion 6.Driving pinion 6 and the 7 phase interlocks of differential mechanism gear ring.Differential mechanism gear ring 7 is fixed on output shaft 13.At this, the example that output shaft 13 is running shaft of the present utility model.
Countershaft 11 by bearing 21(with reference to Fig. 3) rotation freely supporting.Bearing 21 is fixed on the bearing assembly department 1a(axle sleeve forming on driving axle housing 1) in.Jack shaft 12 by bearing 22(with reference to Fig. 3) rotation freely supporting.Bearing 22 is fixed on the bearing assembly department 1b(axle sleeve forming on driving axle housing 1) in.
As shown in Figures 2 and 3, differential mechanism gear ring 7, on the point of contact A contacting with driving pinion 6, is bearing the 1st load (the 1st active force) W1 and the 2nd load (the 2nd active force) W2 that driving pinion 6 applies.The 1st load W1 is the power that driving pinion 6 acts on the differential mechanism gear ring 7 excircle tangent directions (directions X) at differential mechanism gear ring 7, point of contact A place; The 2nd load W2 is the radially power of (Y-direction) that driving pinion 6 acts on the differential mechanism gear ring 7 at differential mechanism gear ring 7, point of contact A place.Resulting load (the 3rd active force) W3 of the 1st load W1 and the synthetic Z direction of the 2nd load W2.
Because differential mechanism gear ring 7 is connected with output shaft 13, so bearing differential mechanism gear ring 7, output shaft 13 transmits the input torque of coming.The bearing 23 of support output shaft 13 is bearing the load with above-mentioned resulting load W3 equidirectional, that is, and and the load of Z direction.In other words, the outer ring of output shaft 13 is to the inner peripheral surface of Z direction extruding bearing assembly department 1c.Below, when the structure that adopts prior art is shown, the surface pressure between the inner peripheral surface of bearing assembly department 1c and the outer ring of output shaft 13.
Fig. 5 represents an example of driving axle housing 101 of the prior art.The same with the driving axle housing 1 in the present embodiment shown in Fig. 3, in driving axle housing 101, be provided with, be fixed on the bearing 21 in the bearing assembly department 1a forming on driving axle housing 101; Be fixed on the bearing 22 in the bearing assembly department 1b forming on driving axle housing 101; Be fixed on the bearing 23 in the bearing assembly department 1c forming on driving axle housing 101.Surface pressure between bearing assembly department 1c shown in Fig. 5 and the outer ring of bearing 23 is as shown in the curve in Fig. 6.This curve by experiment or simulation calculation and obtaining.
In Fig. 6, the angle of the measuring point of transverse axis presentation surface pressure, the longitudinal axis represents the value of the surface pressure between bearing assembly department 1c and the outer ring of bearing 23.At this, the angle of measuring point refers to, the angle of the measuring point on the inner circumference of bearing assembly department 1c using bearing 23 center as the center of circle or the excircle of the outer ring of bearing 23 and the relative Z direction of line between the center of circle.Wherein, with respect to Z direction, being positioned to the angle θ 1 of the measuring point of the postrotational position of clockwise direction is Negative value, with respect to Z direction be positioned to the angle θ 2 of the measuring point of postrotational position counterclockwise on the occasion of.
As shown in Figure 6, the value that is just positioned at the surface pressure on the measuring point of scopes of-90 degree～90 degree is larger.Thereby between bearing assembly department 1c and the outer ring of bearing 23, the position of bearing surface pressure concentrates in the scope of above-mentioned-90 degree～90 degree on the inner circumference of bearing assembly department 1c or the outer ring circumference of bearing 23.In other words, in the scope of these-90 degree～90 degree, bearing assembly department 1c is bearing larger load.
To this, in present embodiment, as shown in Figure 3, on driving axle housing 1, the center C that is pressed into the bearing 23 in bearing assembly department 1c of take is the center of circle, in the scope of the semicircle that Z direction forms with counter clockwise direction 90-degree rotation to clockwise direction respectively relatively, be provided with a plurality of stiffening rib 1d extending along the radially outward side of above-mentioned semicircle from the outer circumferential face of bearing assembly department 1c.
So, by stiffening rib 1d is set on the outer circumferential face at bearing assembly department 1c, the rigidity of bearing assembly department 1c is improved, and the surface pressure between the inner peripheral surface of bearing assembly department 1c and the outer ring of bearing 23 increases, thereby can prevent that the outer ring of bearing 23 from the situation generation of creep occurring.The width of relevant stiffening rib 1d, interval and height etc., can corresponding to whole layout and and the parts of installing around between gap etc. set.
The bearing assembly department 1c that is provided with stiffening rib 1d in the actuating unit 100 of present embodiment and the surface pressure between the outer ring of bearing 23 are as shown in the curve in Fig. 4.Curve in this Fig. 4 by experiment or simulation calculation and obtaining.
In Fig. 4, the angle of the measuring point of transverse axis presentation surface pressure, the longitudinal axis represents the value of the surface pressure between bearing assembly department 1c and the outer ring of bearing 23.At this, the angle of measuring point refers to, the angle of the measuring point on the inner circumference of bearing assembly department 1c using bearing 23 center as the center of circle or the excircle of the outer ring of bearing 23 and the relative Z direction of line between the center of circle.Wherein, with respect to Z direction, being positioned to the angle θ 1 of the measuring point of the postrotational position of clockwise direction is Negative value, with respect to Z direction be positioned to the angle θ 2 of the measuring point of postrotational position counterclockwise on the occasion of.
Curve and the curve in Fig. 6 in comparison diagram 4 are known, and the value of the surface pressure within the scope of the degree of-90 shown in Fig. 4～90 degree is greater than the value of the surface pressure in the scope that shown in Fig. 6 ,-90 degree～90 are spent on the whole.Hence one can see that, compares with the bearing assembly department 1c that the prior art of stiffening rib 1d is not set, and the bearing assembly department 1c of mode of execution of the present utility model and the surface pressure between the outer ring of bearing 23 that are provided with stiffening rib 1d are larger.
In present embodiment, as described above, by on the driving axle housing 1, take the bearing 23 center being pressed in bearing assembly department 1c is the center of circle, the direction (being described Z direction) that relatively bearing 23 bears load is respectively to clockwise direction with counterclockwise in the scope of 90-degree rotation and the semicircle that forms, the stiffening rib 1d that the radially outward side of setting from the outer circumferential face of bearing assembly department 1c along described semicircle extended, improved the rigidity of the part that is provided with stiffening rib 1d of bearing assembly department 1c, improved the rigidity that bearing assembly department 1c bears the part of load, thereby the surface pressure of the part of mutually exerting pressure between the inner peripheral surface of bearing assembly department 1c and the outer ring of bearing 23 increases, thereby, can prevent that the outer ring of bearing 23 from the situation generation of creep occurring.
In addition, in the situation that be provided with strong muscle 1d on the outer circumferential face of bearing assembly department 1c, because the rigidity of bearing assembly department 1c is largely increased, so can suitably dwindle the radial dimension of bearing assembly department 1c, so not only material be can save, miniaturization and the lightweight of driving axle housing also helped.
In addition, in the present embodiment, on the outer circumferential face of bearing assembly department 1c, be provided with 4 stiffening rib 1d, but be not limited to this, can set according to actual conditions the number of stiffening rib.
Claims (2)
1. a Vehicular power transmission system, comprise the bearing of the running shaft that the 1st gear, the 2nd gear with described the 1st gear phase interlock, supporting are connected with described the 2nd gear and be formed with the driving axle housing that the bearing assembly department that described bearing uses is installed, it is characterized in that:
Described the 2nd gear is on the point of contact with described the 1st Gear Contact, bearing the 1st active force that described the 1st gear applies and the 3rd active force of the 2nd active force synthesized, described the 1st active force is the power of excircle tangent direction of described the 2nd gear at described point of contact place; Described the 2nd active force is the power radially of described the 2nd gear at described point of contact place,
On described driving axle housing, take the center that is pressed into the bearing in described bearing assembly department is the center of circle, in the scope of the semicircle that the direction of relatively described the 3rd active force forms with counter clockwise direction 90-degree rotation to clockwise direction respectively, be provided with the stiffening rib that the radially outward side from described bearing assembly department along described semicircle is extended.
2. Vehicular power transmission system as claimed in claim 1, is characterized in that:
The described stiffening rib arranging on described driving axle housing is a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678709.8U CN203532697U (en) | 2013-10-30 | 2013-10-30 | Vehicle power driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678709.8U CN203532697U (en) | 2013-10-30 | 2013-10-30 | Vehicle power driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532697U true CN203532697U (en) | 2014-04-09 |
Family
ID=50418908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320678709.8U Expired - Lifetime CN203532697U (en) | 2013-10-30 | 2013-10-30 | Vehicle power driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782406A (en) * | 2015-01-12 | 2016-07-20 | 加特可株式会社 | Supporting structure of rotational axis for belt type continuously variable transmission |
-
2013
- 2013-10-30 CN CN201320678709.8U patent/CN203532697U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782406A (en) * | 2015-01-12 | 2016-07-20 | 加特可株式会社 | Supporting structure of rotational axis for belt type continuously variable transmission |
| CN105782406B (en) * | 2015-01-12 | 2018-06-08 | 加特可株式会社 | The supporting construction of the rotary shaft of variable v-belt drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
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| CX01 | Expiry of patent term |