CN1037546C - Differential driving bridge of hyper clutch - Google Patents
Differential driving bridge of hyper clutch Download PDFInfo
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- CN1037546C CN1037546C CN91108351A CN91108351A CN1037546C CN 1037546 C CN1037546 C CN 1037546C CN 91108351 A CN91108351 A CN 91108351A CN 91108351 A CN91108351 A CN 91108351A CN 1037546 C CN1037546 C CN 1037546C
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- wheel
- star
- hyper
- roller
- groove
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Abstract
The present invention relates to a differential speed drive bridge of an overrunning clutch for a motor vehicle, which is arranged on a back shaft of a motor vehicle. Two half shafts of a drive wheel is respectively connected with a star wheel 1 by keys. An outer circle of each star wheel 1 is uniformly distributed with two or more than two arc grooves 11, each arc groove 11 is provided with rolling posts 2 which are limited by positioning rings, and the positioning rings are arranged between the star wheels 1 and shaft holes 8 of an outer hub 4. Arc slots 5 are uniformly distributed on the hole wall of each shaft hole 8. The present invention overcomes the defect of equal torque distribution of the prior art, and has the advantages of compact structure and low cost.
Description
The present invention relates to a kind of ransaxle of motor vehicle.Described ransaxle is installed in the rear axle of motor vehicle usually, accepts the moment of torsion that transmitted by transmission shaft, and moment of torsion is passed to the driving wheel of two symmetric arrangement.
Known this ransaxle is generally a differential planetary gear train device.In described device, two driving wheels on the rear axle are connected with two semiaxis respectively, one end of every axle is connected with actuation gear, actuation gear meshes with planet wheel respectively, the turning axle of planet wheel is connected with a bevel gear is eccentric, planet wheel not only can rotate around self axis like this, and drives revolution by bevel gear; The moment of torsion that the transmission shaft transmission comes is accepted in bevel gear and the engagement of another bevel gear.When the vehicle straight-line travelling, described device can guarantee that two driving wheels obtain identical moment of torsion, and two-wheeled speed is identical.And when need turning, it is lower that described device can guarantee near the nearer driving wheel rotating speed of gyration center, and higher from gyration center driving wheel speed far away, guarantees with the ground pure rolling and unlikely and ground slip and make tire wear.Though known this differential gear train can reach the motion requirement, structure is compact and portable also, and its shortcoming is a complex structure, cost height, moment of torsion mean allocation.For example, when driving wheel of motor vehicle touches on the slippery ground, during as slob or ice and snow road, though another wheel is on good road surface, but motor vehicle can not advance, this moment is very little at wheel on the slippery ground and the adhesion between the road surface, the moment of reaction that the road surface can only be very little to the semiaxis effect, thereby corresponding its less moment of torsion of distributing to of differential mechanism; Though another wheel contacts with good road surface, adhesion between wheel and good road surface is bigger, but characteristic because of differential mechanism mean allocation moment of torsion, thereby the moment of torsion that this wheel is assigned to can only equate with the moment of torsion on the driving wheel of trackslipping, cause total tractive force to be not enough to overcome running resistance, Motor Vehicle can not advance, and power then consumes in the rotation of the wheel that trackslips.
In order to overcome the shortcoming of moment of torsion mean allocation, some go-anywhere vehicle has adopted differential locking-device.When above-mentioned phenomenon takes place when, utilize differential locking-device that left and right sides semiaxis is fused, though increased the moment of torsion that road contacts good this driving wheel like this, differential mechanism has lost differential action again.After Motor Vehicle rolls slippery road surface away from, need extract differential locking-device at once again, brought inconvenience to operation like this.
U. S. Patent " POSITIVE DRIVE DIFFRENTAL " (differential drive reliably), the patent No. 3,283,611 disclose a kind of new differential motion that can overcome above-mentioned disadvantage, described differential motion has an outer hub as driving element, the endoporus of outer hub is evenly equipped with the arc groove, also be provided with two cylindrical star-wheels with outer hub endoporus coaxial line, the endoporus of star-wheel links to each other with semiaxis with key, be distributed with cylindrical rollers between the endoporus of hub and the star-wheel outside, the corresponding one group of roller of each star-wheel, roller is spacing by positioning ring separately, when producing differential motion, break away from the engaging position of outer hub by the roller that makes a side, thereby the passive device of this side can freely be rotated.
In order to realize differential motion, between two positioning rings, Hookean spring has been installed, need differential during turning, spring can make the roller of a side be in the central authorities of outer hub endoporus arc groove, thereby the wheel of this side is freely rotated, however between two positioning rings mounting spring, increased complexity from a structural point, on performance, spring structure is a unascertainable elastic link, is difficult to guarantee that roller reaches needed performance requirement.
In order to reach vehicle under some moving condition, as vehicle descent run etc., driven member is to the driver part transmitting torque, and above-mentioned U. S. Patent is provided with the friction steel disk in the end of driven member, and in the centre of two driven members saucerspring is set, but so, if saucerspring transfer tension, then might realize driven member to the driver part transmitting torque, but can not realize differential motion, therefore, its structure is to need to improve.
Purpose of the present invention promptly is to provide a kind of ransaxle of motor vehicle, and described ransaxle can overcome the deficiency of known technology, has the ability of comparatively ideal torque distribution ability and realization differential motion.
A further object of the present invention provides a kind of cost economy, the ransaxle of the motor vehicle that processing and assembling realize easily.
For achieving the above object, the solution of the present invention is: described surmounting from the device differential drive axle, be installed on the rear axle of motor vehicle, the one outer hub as driving element is arranged, the endoporus of outer hub is evenly equipped with the arc groove, also be provided with two cylindrical star-wheels with outer hub endoporus coaxial line, the endoporus of star-wheel has key to link to each other with semiaxis, be distributed with cylindrical rollers between the endoporus of hub and the star-wheel outside, the corresponding one group of roller of each star-wheel, each group roller is spacing by positioning ring separately, specialization is: the uniform arc groove more than at least two of the cylindrical of each star-wheel, and in two positioning rings, the end face of a positioning ring has the groove of one group of broad symmetrically, the end face of another positioning ring has narrower double wedge, and described double wedge can imbed in the groove than loose ground.
The ransaxle of structure of the present invention, the tie-rod that is equivalent to planetary gear train in the known technology by the outer hub of bevel gear drive, and star-wheel be equivalent on the semiaxis with actuation gear, arc groove by star-wheel, roller, positioning ring, the arc groove of outer hub is formed a box of tricks, star-wheel can according to circumstances be thrown off or neatly in conjunction with the transmission of outer hub, therefore structure of the present invention can realize the function of ransaxle ideally, and when travelling on normal forthright, the outer hub that is driven by bevel gear passes through roller, star-wheel drives semiaxis and rotates; During turning, this ransaxle produces differential action, and the wheel that allows the outer ring rotate is realized pure rolling and fricton-tight.And this structure can realize the moment of torsion of transmission shaft is all passed to one of them driving wheel fully, and only gives seldom or do not give another driving wheel, and this has just overcome the situation of ransaxle mean allocation moment of torsion in the known technology.
Therefore, this programme has been realized purpose of the present invention.
In conjunction with the accompanying drawings scheme is described in more detail below by embodiment.
Fig. 1 is the front view of differential driving bridge of hyper clutch;
Fig. 2 is the sectional view of differential driving bridge of hyper clutch;
Fig. 3 is the front view of star-wheel;
Fig. 4 is the sectional view of star-wheel;
Fig. 5 is the front view of recessed tooth positioning ring
Fig. 6 is the side view of recessed tooth positioning ring;
Fig. 7 is the front view of double wedge positioning ring;
Fig. 8 is the side view of double wedge positioning ring;
Fig. 1 and Fig. 2 demonstrate the structural drawing of present embodiment particularly.Ransaxle front view shown in Figure 1 comprises star-wheel 1, and roller 2 is housed on the circumference of star-wheel 1, and roller 2 is spacing by positioning ring 3, and positioning ring 3 can rotate along its axle center.Described roller 2 bottoms contact with arc groove on the star-wheel 1, and the groove of positioning ring 3 is passed at the middle part, and the top of roller 2 is held by the arc groove 5 of outer hub 4.Described arc groove 5 is one section curve.What present embodiment adopted is the camber line of a diameter greater than the circle of roller 2, if roller 2 places in the position shown in the figure 1, the center of circle of camber line circle is on the line in the gyration center O and roller 2 centers of circle, and outer hub rotates, and then roller 2 can be pushed down in the both sides of camber line 5.Camber line 5 does not repel the curve that adopts other yet, but all within the imagination of this programme.
Ransaxle sectional view shown in Figure 2 as can be known, star-wheel 1 is provided with two, star-wheel is that spline is connected with semiaxis, two positioning rings 3 and 6 are located by the cylindrical of star-wheel 1 and the axis hole of outer hub 4 in radial direction, the end face of two positioning rings is by the described structure contact of scheme in the axial direction, and promptly the narrower double wedge of a positioning ring imbeds in the groove of another positioning ring broad.Who has double wedge or groove is unimportant as for two positioning rings, and the position can exchange.Outer hub 4 is an axis body.There is boss 7 the axial appropriate location of axis body.Contain the length overall of two positioning rings 3 and 5 on the length direction of the axis hole 8 of outer hub 4, be distributed with diametrically and the same number of arc groove 5 of roller, and extend vertically.Boss 7 be provided with step as locating basis for bevel gear 9 location, and order 10 with spiral shell and tighten up.Described screw 10 is provided with a plurality of along circumference.
The motion analysis of structural drawing is as described below.As can be seen from Figure 1, from the moment of torsion that bevel gear 9 transmits motor to transmit by transmission system, drive outer hub 4 and rotate.Outer hub by changeing a very little angle clockwise earlier, is pushed down roller 2 up to the arc groove 5 of outer hub 4 along axle center O, so the moment of torsion of outer hub passes through roller 2, star-wheel 1 passes to semiaxis, orders about semiaxis and drives wheel.When travelling in normal highway section, the moment of torsion of outer hub 4 passes to two semiaxis equably; When turning, for example turn left, the wheel that left half axle drove is at inner ring, right axle shaft with wheel in the outer ring, then the vehicle wheel rotational speed that right axle shaft drove is fast than inner ring.At this moment the right star-wheel is obviously than the rotating speed height of outer hub 4, so star-wheel 1 turns over an angle along clockwise direction, makes roller 2 break away from the situation that is compressed by the arc grooves 5 of outer hub 4.Because two locating ring structures are pressed double wedge and groove is chimeric mutually, therefore positioning ring can only drive roller 2 and turn over a very little angle, make roller 2 be in the middle part of the arc groove 5 of outer hub 4, when star-wheel 1 continues rotation, be about to roller 2 jack-up, star-wheel 1 promptly breaks away from transmission system and skids, and the outer ring wheel that right star-wheel connects can be rotated with higher speed, realizes rolling and fricton-tight.
Also can analyze the situation that vehicle is in another kind of road conditions from this structure.For example a driving wheel falls into pitfall, and another driving wheel is in the situation of good road surface.For example the driving wheel that left star-wheel connected of Fig. 2 sinks in the muddy water hole, wheel-slip, this moment this wheel to act on the countertorque of ransaxle very little, so the moment that it only must be assigned to is seldom kept trackslipping of wheel, most of moment all affacts and is in the good road surface driving wheel and gets on, this has just overcome the planetary gear train ransaxle moment of torsion mean allocation of known technology, and be defective by the state assignment of moment of torsion minimum, therefore the ransaxle of this structure helps vehicle to climb out of pitfall, the advantage that overcomes vehicle slip is very remarkable, and this also confirms from the vehicle condition experiment.
Narrate the structure of several strength members below respectively.Fig. 3 and Fig. 4 are the concrete structure of star-wheel.The star-wheel of present embodiment is an axis body, and uniform six the spill arc grooves 11 of star-wheel cylindrical, the arc of groove are the part of roller circle, and the center of circle of arc place circle is on six bisectrixs of 360 ° of angles of circumference.The center of star-wheel porose 12.The part in hole has been drawn spline, so that cooperate with the splined shaft of semiaxis.The structure in hole is relevant with semiaxis, if the semiaxis alteration of form, the hole also will make corresponding changes.
Fig. 5 is to the structure that Figure 8 shows that positioning ring.By scheme as can be known, for realizing differential, two positioning rings have different structures.Have one group than the recessed tooth positioning ring of crying of wide groove; What have narrower double wedge is the double wedge positioning ring.Two kinds of rings are a kind of thin wall circular of broad, and the thickness of annulus is the 1/3-2/3 of roller circle.Circumferencial direction is evenly equipped with groove 13 on the ring wall.The number of groove conforms to the number of roller, and present embodiment has 6 grooves.It is bigger that the width of groove 13 and length are compared with roller, so that roller axially can freely enter.An end face of recessed tooth positioning ring has the groove 14 of two broads of radial symmetric, and the degree of depth of groove is slightly larger than the height of double wedge.It is narrow a pair of double wedge 15 that an end face of double wedge positioning ring has than recess width, and described double wedge 15 can imbed in the groove 14 than loose ground.As described in motion analysis, double wedge 15 has guaranteed that with the stand out of groove 14 roller can rest on the middle part of outer hub groove 5, so that star-wheel can eject roller and star-wheel is skidded when producing differential action.Its effect is as follows: when the Motor Vehicle constant-speed driving, the center of recessed tooth 14 is just aimed at the center of double wedge 15; When the Motor Vehicle differential travels, because outboard wheel is faster than nearside wheel, originally together rotation forward of outboard wheel positioning ring and star-wheel, when limit of double wedge 15 with after a limit of recessed tooth 14 is leaned on mutually, outside positioning ring is blocked by inboard positioning ring, therefore outside positioning ring reality has only been changeed an angle, the roller outside this corner just guarantees in the positioning ring groove and arc groove 5 center-aligned of outer hub bore inwall, thereby guaranteed that roller can do radial motion freely in positioning ring groove, thereby star-wheel and semiaxis break away from the restriction of outer hub, reaches the purpose of differential.
The differential drive axle of structure of the present invention is compared with known technology, and is simple in structure tight Gather, part greatly reduces, and has reduced the difficulty of processing of part, and cost is corresponding to fall Low, cost only is the 1/4-1/5 of known technology, and superior performance, and is complete Entirely overcome the shortcoming of known technology. By up to ten thousand kilometers test, fully satisfied Actual requirement. Therefore, this is the invention of a success.
Claims (8)
1, a kind of differential driving bridge of hyper clutch, be installed on the rear axle of motor vehicle, the one outer hub as driving element is arranged, the endoporus of outer hub is evenly equipped with the arc groove, also is provided with two cylindrical star-wheels with outer hub endoporus coaxial line, and the endoporus of star-wheel links to each other with semiaxis with key, be distributed with cylindrical rollers between the endoporus of hub and the star-wheel outside, the corresponding one group of roller of each star-wheel, each group roller is spacing by positioning ring separately, it is characterized in that; The uniform arc groove (11) more than at least two of the cylindrical of each star-wheel (1), in two positioning rings, the end face of a positioning ring has the groove (14) of one group of broad symmetrically, the corresponding end-faces of another positioning ring has narrower double wedge (15), and described double wedge (15) can imbed in the groove (14) than loose ground.
2, differential driving bridge of hyper clutch according to claim 1 is characterized in that: uniform six arc grooves of the cylindrical of star-wheel (1) (11).
3, differential driving bridge of hyper clutch according to claim 2 is characterized in that: the arc of arc groove (11) is the part of roller (2) circle.
4, differential driving bridge of hyper clutch according to claim 1 is characterized in that: be evenly equipped with groove (13) on the circumference of positioning ring, the length of groove (13) and width are more bigger than roller (2).
5, differential driving bridge of hyper clutch according to claim 4 is characterized in that: the thickness of positioning ring is the 1/3-1/2 of roller diameter.
6, differential driving bridge of hyper clutch according to claim 1 is characterized in that: outer hub (4) is an axis body, has dug hub bore (8), and the wall of hole (8) has and the same number of arc groove of roller (2) (5) diametrically, and extends vertically.
7, differential driving bridge of hyper clutch according to claim 6 is characterized in that: arc groove (5) is one section circular arc line.
8, differential driving bridge of hyper clutch according to claim 7 is characterized in that: outer hub (4) has boss (7), has step on the boss (7) and locatees and tighten up for bevel gear (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108351A CN1037546C (en) | 1991-11-21 | 1991-11-21 | Differential driving bridge of hyper clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108351A CN1037546C (en) | 1991-11-21 | 1991-11-21 | Differential driving bridge of hyper clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072378A CN1072378A (en) | 1993-05-26 |
| CN1037546C true CN1037546C (en) | 1998-02-25 |
Family
ID=4909250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91108351A Expired - Fee Related CN1037546C (en) | 1991-11-21 | 1991-11-21 | Differential driving bridge of hyper clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1037546C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907158A (en) * | 2009-06-04 | 2010-12-08 | 左臣伟 | Differential system with transcendent function |
| CN104879466A (en) * | 2015-05-15 | 2015-09-02 | 西华大学 | Differential mechanism special for formula car |
| CN111873711B (en) * | 2020-07-03 | 2021-10-29 | 北方汤臣传动科技有限公司 | Compact electric drive axle |
-
1991
- 1991-11-21 CN CN91108351A patent/CN1037546C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1072378A (en) | 1993-05-26 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |