CN100400354C - Motor vehicle steering device - Google Patents
Motor vehicle steering device Download PDFInfo
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- CN100400354C CN100400354C CNB2004800163906A CN200480016390A CN100400354C CN 100400354 C CN100400354 C CN 100400354C CN B2004800163906 A CNB2004800163906 A CN B2004800163906A CN 200480016390 A CN200480016390 A CN 200480016390A CN 100400354 C CN100400354 C CN 100400354C
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- drive shaft
- tween drive
- shaft
- connecting device
- joint
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Abstract
A shaft coupling device for a motor vehicle steering device, comprising an input shaft for transmitting rotation from a steering wheel, an intermediate shaft, an output shaft for driving a steering mechanism on the motor vehicle side, a constant velocity universal joint, and a cross shaft universal joint, wherein the input shaft and the intermediate shaft are connected by either of the constant velocity universal joint and the cross shaft universal joint, and the intermediate shaft and the output shaft are connected by the other joint.
Description
Technical field
The present invention relates to a kind of plunging joint system or tween drive shaft system that can be used between two axles that are oriented in different directions, transmit rotation, more specifically, the present invention relates to a kind of plunging joint system or tween drive shaft system that is used for wheel steering system.
Background technology
Gimbal system is used for not transmitting rotation or energy between the axle of in-line at two.Cardan universal joint, it also refers to cardan joint (Cardan Joint), hook joint and X conn, two axles can be connected to each other via the cross-member of the shaft portion with four crosses, and these shaft portions are such, that is, two pairs of opposite shaft portions are by being connected to their yoke supports of axle separately.
Constant velocity spherical joint is such, promptly, torque transmitting ball places the guide groove that forms respectively on the outside face of the inside face of coupling parts and inner joint part, and wherein the outside face of inner joint part is adapted to fit in the coupling parts to transmit energy between the diaxon that is connected respectively to inner joint part and coupling parts.
Utilize constant velocity spherical joint, even under the situation of axis angle that has intersection between the diaxon or angular transposition, rotation also can be between diaxon constant-speed transmission, and utilize cardan universal joint, can cause fault of construction, that is, under the situation of axis angle that exist to intersect between the diaxon or angular transposition, rotation can not be between diaxon constant-speed transmission.
In wheel steering system, because body construction, the line of centers of bearing circle S. A. becomes bigger angle with respect to the line of centers of the axle drive shaft that is used for driving car body side steering hardware.Because this has settled the plunging joint system to be delivered to the steering hardware of car body side with the rotation with bearing circle between the diaxon that intersects each other.In this case, as this plunging joint system, employed plunging joint system is constructed to have usually two groups of same tween drive shaft universal-joints connected to one another that pass through.
Though cardan universal joint has easy production and cheap advantage, because as mentioned above, can not between the diaxon that will be joined together, provide constant speed, therefore variation has taken place in the moment of torsion that transmits.For fear of this situation, by making intersecting axle line angle or angular transposition between tween drive shaft and other diaxons equate to attempt offsetting speed difference and the change in torque that produces by single universal-joint substantially.
Yet, owing to reasons such as vehicle layout, not to make two intersecting axle line angles equate, and in many cases,, have to accept two different intersecting axle line angles for their use, cause the control feel variation.
Though utilize constant velocity spherical joint, can not produce the above-mentioned special state that will be considered, but problem is their production and becomes difficult and need higher productive costs that therefore, constant velocity spherical joint does not also reach the stage that is widely adopted in wheel steering system.
(patent document No.1)
JP-A-2000-257645
(patent document No.2)
JP-A-09-177813
(patent document No.3)
JP-UM-B-2526189
In addition, about having universal-joint and have the tween drive shaft system of the telescopic shaft that comprises female splines, male splines etc. at its two ends, in order to obtain operation feeling well, need be reduced in bearing circle and be operated click and the impact noise that produces at the part place that spline is fitted to each other when rotating and be reduced in telescopic shaft the sliding resistance that produces when moving.
Telescopic shaft as the click that has successfully reduced the office, auxiliary section and impact noise and the sliding resistance relevant with its fore and aft motion, JP-A-2000-9148 discloses a kind of telescopic shaft, therein, thickness is 0.03mm is applied to male splines or the arbitrary at least spline of female splines to the molybdenum disulfide film of 0.06mm surface, then, the film that so applies is heated dry to reduce tolerance clearance.In addition, as correlation technique, JP-A-2000-9148 has also described a kind of telescopic shaft, and therein, nylon film is applied on male splines or the arbitrary at least spline of female splines, thereafter, so the nylon film that applies by the machine scraping to reduce this tolerance clearance.
Because the disclosed telescopic shaft of JP-A-2000-9148 does not need the machine scraping, thus the quantity of production stage reduced, and therefore reduced productive costs.Yet, because the error of film thickness has been added in the manufacturing errors of male splines and female splines, so the tolerance clearance of disclosed telescopic shaft becomes greater than the tolerance clearance of disclosed telescopic shaft in the JP-A-2000-9148 correlation technique, therefore, there is such certain situation, that is, click and the impact noise that produces at the part place that spline is fitted to each other can not be lowered.The result is in order further to reduce tolerance clearance, adopt the selective fit of male splines and female splines.
In addition, still utilize the correlation technique of describing among the JP-A-2000-9148, there is such certain situation, that is, because product error and depend on the vehicle type that telescopic shaft is installed, the level of click and impact noise and sliding resistance can not satisfy standard value, when this happens, during disclosed telescopic shaft, in order further to reduce tolerance clearance, male splines and female splines adopt selective fit in using JP-A-2000-9148.
In the telescopic shaft of the telescopic shaft of JP-A-2000-9148 and correlation technique, comprise cardan universal joint because be arranged on the universal-joint at telescopic shaft two ends, for fear of the change in torque that the deviation owing to the circumferential phase place between the cardan universal joint causes, the selective fit of male splines and female splines is had to be limited to circumferential single position by the position with selective fit and is carried out.Therefore, in order to reduce the tolerance clearance between male splines and the female splines by selective fit, have to prepare a plurality of male spliness and female splines, on the basis that examination is gathered, by changing the combination of male splines and female splines, find out the male splines that satisfies pre-determined characteristics and the combination of female splines.
Consider that described situation has proposed the present invention, subject matter of the present invention is to provide a kind of plunging joint system that is used for wheel steering system with low cost, thereby by in conjunction with the advantage of the cardan universal joint of making easily with low cost with utilize constant velocity spherical joint need not consider the advantage of intersecting axle line angle, described plunging joint system is still less by the restriction due to the vehicle layout.
In addition, peripheral issue of the present invention provides a kind of tween drive shaft system that is used for wheel steering system, described tween drive shaft system has a kind of telescopic shaft, described telescopic shaft can produce click and impact noise and sliding resistance still less when bearing circle is operated, and described telescopic shaft can low-costly be made.
Summary of the invention
Will by following device solves main with less important problem.
The invention provides a kind of wheel steering system that comprises the tween drive shaft system, comprising: be used for transmitting input shaft from the rotation of bearing circle; Tween drive shaft, thus described tween drive shaft comprises top tween drive shaft, bottom tween drive shaft and is used in some way described top tween drive shaft being connected to described bottom tween drive shaft and makes them to endwisely slip and transmit the connecting device of rotation betwixt along it; Be used for the output shaft of the steering hardware on the powered vehicle; Between described input shaft and described top tween drive shaft, provide the bonded assembly cardan universal joint; And between described bottom tween drive shaft and described output shaft, provide the bonded assembly constant-velocity universal joint.
In addition, according to first aspect present invention, a kind of wheel steering system that comprises the plunging joint system is provided, described plunging joint system comprises the input shaft that is used for transmitting from the rotation of bearing circle, tween drive shaft, be used for driving the output shaft of the steering hardware on the car body, constant-velocity universal joint and cardan universal joint, wherein, one of them is connected described constant-velocity universal joint and described cardan universal joint input shaft with tween drive shaft, with remaining another of described constant-velocity universal joint and described cardan universal joint described tween drive shaft is connected with described output shaft.
According to second aspect present invention, provide a kind of as at the wheel steering system described in the first aspect present invention, wherein, described constant-velocity universal joint is a constant velocity spherical joint.
According to third aspect present invention, provide a kind of as at the wheel steering system described in the second aspect present invention, wherein, described constant velocity spherical joint connects described input shaft and described tween drive shaft, and described cardan universal joint connects described tween drive shaft and described output shaft.
According to fourth aspect present invention, provide a kind of as at the wheel steering system described in the present invention second or the third aspect, wherein, the intersecting axle line angle of described constant velocity spherical joint is optional to be selected greater than the intersecting axle line angle of described cardan universal joint.
According to fifth aspect present invention, a kind of wheel steering system as plunging joint system as described in be characterised in that described in the first aspect present invention is provided, wherein, thus described tween drive shaft comprise top tween drive shaft, bottom tween drive shaft and be used in some way described top tween drive shaft being connected to described bottom tween drive shaft and make them to endwisely slip and transmit the connecting device of rotation betwixt along it.
According to sixth aspect present invention, a kind of wheel steering system that comprises the tween drive shaft system is provided, described wheel steering system comprises the input shaft that is used for transmitting from the rotation of bearing circle, tween drive shaft, described tween drive shaft comprises the top tween drive shaft, thereby bottom tween drive shaft and being used for is connected to described top tween drive shaft described bottom tween drive shaft in some way makes them to endwisely slip and transmit the connecting device of rotation betwixt along it, be used for the output shaft of the steering hardware on the powered vehicle, provide the bonded assembly universal-joint respectively between described input shaft and described top tween drive shaft and between described bottom tween drive shaft and described output shaft, arbitrary at least universal-joint of wherein said universal-joint is a constant-velocity universal joint.
According to seventh aspect present invention, a kind of wheel steering system as plunging joint system as described in be characterised in that described in the sixth aspect present invention is provided, wherein, the two is constant-velocity universal joint for described universal-joint.
According to eighth aspect present invention, provide a kind of as aspect the present invention the 5th to the 7th in the wheel steering system described in the either side, wherein said constant-velocity universal joint is a constant velocity spherical joint.
According to ninth aspect present invention, provide a kind of as wheel steering system in tween drive shaft system as described in the present invention the 5th is characterised in that described in the either side in the eight aspect, wherein, described connecting device be spline connecting device or sawtooth connecting device and wherein the surface of the connecting bridge on the outside of described spline connecting device or described sawtooth connecting device or inboard either side at least be formed with the polyamide resin membrane of lipoprotein.
According to tenth aspect present invention, provide a kind of as wheel steering system in tween drive shaft system as described in the present invention the 5th is characterised in that described in the either side in the eight aspect, wherein, described connecting device is the sawtooth connecting device, and wherein is provided with biasing member to apply bias force along the direction perpendicular to its axis between the described outside of described sawtooth connecting device and described inboard.
The tenth on the one hand according to the present invention, provide a kind of as wheel steering system in tween drive shaft system as described in the present invention the 5th is characterised in that described in the either side in the eight aspect, wherein, described connecting device is the spline connecting device, and the height of at least one tooth of wherein said spline connecting device is made the height that is lower than other teeth.
According to the wheel steering system that the invention is characterized in described tween drive shaft system, at least one the described universal-joint that is provided with at place, described tween drive shaft system end comprises described constant-velocity universal joint.Therefore, when selective fit, because the phase place of the mating part of described telescopic shaft can not be limited to a circumferential position, therefore might make described tween drive shaft system with low cost, described tween drive shaft system can reduce the required time of selective fit greatly and produce littler click and impact noise and sliding resistance.
Description of drawings
Fig. 1 is an instruction diagram, and the integral body of having used steering mechanism of motor vehicle of the present invention is shown;
Fig. 2 shows the instruction diagram of the plunging joint system 1 of first embodiment;
Fig. 3 is a part sectional view, and the plunging joint system 1 of second embodiment has been described;
Fig. 4 is an instruction diagram, and the integral body of having used steering hardware of the present invention is shown;
Fig. 5 shows the instruction diagram of the tween drive shaft system 1 of the 3rd embodiment, and wherein Fig. 5 (A) is a cutaway drawing, and Fig. 5 (B) is the cutaway view that B-B along the line does, and Fig. 5 (C) is the cutaway view that C-C along the line does;
Fig. 6 is the cutaway view of being done along the line A-A among Fig. 5, only shows the male splines with involute profile among the figure;
Fig. 7 is the cutaway view of being done along the line A-A among Fig. 5, only shows the male splines with involute profile among the figure, and this flank profil is different with flank profil shown in Figure 6;
Fig. 8 is the cutaway view of being done along the line A-A among Fig. 5, only shows among the figure to have straight-toothed male splines;
Fig. 9 is the instruction diagram of the tween drive shaft system 1 of the 4th embodiment;
Figure 10 is the amplification view of serration mating part shown in Figure 9;
Figure 11 is the instruction diagram of the tween drive shaft system 1 of the 5th embodiment.
Notice that in the accompanying drawings, Reference numeral refers to following content: 1 tween drive shaft system (plunging joint system); 2 constant velocity spherical joints; 21 binding bolts; 22 inner joint parts; 221 spherical guide grooves; 231 spherical guide grooves; 239 coupling parts; 24 torque transmitting balls; 25 spherical guard rings; 26 protective cases; 27 axis holes; 271 otch; 272 bolts hole; 273 loosening holes; 28 yokes; 3 tween drive shafts; 31 top tween drive shafts; 311 male spliness; 312 teeth; 313 male spliness; 314 outer sawtooth; 315 elongated slots; 316 leaf springs; 32 bottom intermediate shaft tubes; 321 female spliness; Sawtooth in 322; 33 films; 4 constant velocity spherical joints (cardan universal joint); 41 binding bolts; 42 inner joint parts; 421 spherical guide grooves; 43 coupling parts; 431 spherical guide grooves; 439 coupling parts; 44 torque transmitting balls; 45 spherical guard rings; 46 protective cases; 47 axis holes; 471 otch; 472 bolts hole; 473 loosening holes; 48 yokes; 51 bearing circle; 52 steering-column tubes; 521 wheel shafts; 522 adjustment (adjusting) levers; 6 car body side steering hardwarees; 61 input shafts; 7 cardan universal joints; 71 first yoke arms are right; 72 second yoke arms are right; 73 cross-member; 773 loosening holes; 78 yokes; 91 vehicle bodies.
The specific embodiment
(first embodiment)
Fig. 1 is an instruction diagram, and the integral body of having used steering mechanism of motor vehicle of the present invention is shown.The figure shows and comprise car body side steering hardware 6 and the part that makes progress thereof.Steering-column tube 52 is fixed on the vehicle body 91 in some way, makes the inclination angle of steering-column tube 52 to regulate by adjustment (adjusting) lever 522.Steering-column tube 52 rotatably supports and passes its in-to-in wheel shaft 521, and bearing circle 51 is fixed on the upper end of wheel shaft 521.Plunging joint system 1 is connected to the other end of wheel shaft 521 or is connected the lower end side of steering-column tube 52.
Plunging joint system 1 comprises in the top constant velocity spherical joint 2 of arrangement, be placed in its lower end cardan universal joint 4 and the tween drive shaft 3 of universal-joint that is used for being connected arrangement like this that is placed in centre portion therebetween.Constant velocity spherical joint 2 and cardan universal joint 4 are connected to the input shaft 61 of wheel shaft 521 and car body side steering hardware 6 respectively by binding bolt 21,41.Intersecting axle line angle α and β are the intersecting axle line angles of constant velocity spherical joint 2 and cardan universal joint 4, and in the present embodiment, the intersecting axle line angle is respectively the angle that forms between tween drive shaft 3 and wheel shaft 521 and input shaft 61.
For the variation (variation of moment of torsion) that reduces cireular frequency, for the intersecting axle line angle β of cardan universal joint 4 selects little value, be understood that it is that the required total intersecting axle line angle (alpha+beta) of plunging joint system 1 guarantees by increasing intersecting axle line angle α, wherein the scope that increases of the intersecting axle line angle α scope that reduces of intersecting axle line angle β just.The result is to make intersecting axle line angle α greater than intersecting axle line angle β.In other words, because vehicle layout is relevant, constant velocity spherical joint 2 is set at a side of intersecting axle line angle that need be bigger, and cardan universal joint 4 is set at its opposition side.
As shown in Figure 1, be set in the situation of plunging joint system 1 upper end at cardan universal joint 4, constant velocity spherical joint 2 is provided thereon end, and the intersecting axle line angle β of the intersecting axle line angle α of constant velocity spherical joint 2 and cardan universal joint 4 is respectively 40 ° and 10 °, occur in change in torque on the cardan universal joint 4 become greatly about+/-1.5% near, and almost to turning to not influence of sensation.From the angle of calculating, preferably, intersecting axle line angle β is set to 18 ° or littler, more preferably is 13 ° or littler, become with the change in torque of each intersecting axis angular dependence (-dance) to be approximately+/-5% and be approximately+/-2.6%.
Fig. 2 shows the instruction diagram of the plunging joint system 1 of first embodiment, and wherein Fig. 2 (A) is a part sectional view, and Fig. 2 (B) is the cutaway view that B-B along the line does, and Fig. 2 (C) is the cutaway view that C-C along the line does.
The structure of plunging joint system 1 is as follows.The first yoke arm of the arm that partners that constitutes the inner joint part 22 of constant velocity spherical joint 2 parts and constitute cardan universal joint 4 parts is to 71 two ends that are formed on tween drive shaft 3, wherein inner joint part 22 is formed on the end of settling constant velocity spherical joint 22, and the first yoke arm is formed on the end of settling cardan universal joint 4 to 71.
Near inner joint part 22 far-ends of constant velocity spherical joint 2 part forms sphere, in addition, forms spherical guide groove 221 on this spherical surface.On the other hand, coupling parts 23 comprise spherical recess, and form spherical guide groove 231 in this recess.Two spherical guide grooves 221,231 are extending axially along tween drive shaft 3 and coupling parts 23 all, public torque transmitting ball 24 is installed in these grooves in a kind of mode that can roll therein, thus linking together of can relative to each other rotating of inner joint part 22 and coupling parts 23.
The output yoke parts 78 of cardan universal joint 4 have axis hole 47, and the input shaft 61 of car body side steering hardware 6 is fixed on wherein, and are arranged on the otch 471 in this axis hole 47.Binding bolt 41 is screwed into loosening hole 473 and bolt hole 472, and they are formed on the both sides of otch 471, are fixed to input shaft 61 thereby will export yoke parts 78.In addition, the partner second yoke arm of arm is formed on the output yoke parts 78 72.
Cross-member 73 comprises four shaft portions that extend in the criss-cross mode, and each supports 72 the 71 and second yoke arm by the first yoke arm respectively opposite shaft portion.Tween drive shaft 3 and output yoke parts 78 link together to transmit rotation by the cross-member 73 that is placed in therebetween.
As already described, when utilizing cardan universal joint 4, it is wherein a kind of universal-joint, because between two axles of its bonded assembly, do not produce constant speed, so change in torque can take place, bear bigger intersecting axle line angle α by the constant velocity spherical joint 2 that makes another kind of universal-joint form, can reduce the intersecting axle line angle β of cardan universal joint 4.Thus, the nearly all change in torque that occurs in the plunging joint system 1 all is reduced to the impregnable substantially degree of control feel.
(second embodiment)
Fig. 3 is the part sectional view that the plunging joint system 1 of second embodiment has been described.Hereinafter, will be only describe the place different with first embodiment, the description of elsewhere and the cutaway view done along line B-B, the C-C of Fig. 3 can be with reference to the description of first embodiment.These different places are, tween drive shaft 3 is made of the part axle that is split into two halves, half top tween drive shaft 31 for being associated with inner joint part 22, second half bottom tween drive shaft 32 for being associated with cardan universal joint 4, and on top tween drive shaft 31, be formed with male splines 311, be formed with the female splines that is adapted to fit on the male splines 311 on the bottom tween drive shaft 32.
Replace spline to connect, can adopt the axis mechanism with identical function for example to comprise the bindiny mechanism of key and keyway, this bindiny mechanism comprises two part axles, and they can stretch but can not counterrotating mode connect with a kind of.In addition, replace the spline connecting bridge of tween drive shaft 3, can be provided with the rubber coupling in the bottom of wheel shaft 521 is the shock absorption mechanism of representative or the mechanism that is used for absorbing the collision displacement.
Though in these embodiments, do not describe power steering system, natural is that power steering system electrically operated or hydraulic pressure can be installed in the bottom of wheel shaft 521 or be installed on the input shaft 61.In addition, the incidence regulating mechanism of having described (leaning device) also might not only be provided but also provide to be used for regulating the axial location of bearing circle on steering-column tube 52 and the mechanism of upright position (telescoping mechanism, inclination and telescoping mechanism), perhaps steering-column tube 52 might be without any a kind of such mechanism.
In addition, the nature be, depend on the restriction of vehicle layout, but constant velocity spherical joint 2 and cardan universal joint 4 reversed arrangement, be that cardan universal joint 4 can be positioned in wheel shaft 521 sides, and constant velocity spherical joint 2 can be positioned in car body side gear mechanism 6 sides.
(the 3rd embodiment)
Fig. 4 is an instruction diagram, and the integral body of having used steering mechanism of motor vehicle of the present invention is shown.The figure shows and comprise car body side steering hardware 6 and the part that makes progress thereof.Steering-column tube 52 is fixed on the vehicle body 91 in some way, makes the inclination angle of steering-column tube 52 to regulate by adjustment (adjusting) lever 522.Pass steering-column tube in-to-in wheel shaft 521 and rotatably be supported in the steering-column tube 52, and bearing circle 51 is fixed on the upper end of wheel shaft 521.Tween drive shaft system 1 is connected to the other end of wheel shaft 521 or is connected the lower end side of steering-column tube 52.
Tween drive shaft system 1 comprises the constant velocity spherical joint 2,4 that is positioned at its place, top and bottom, and the tween drive shaft 3 of these universal-joints that are connected to each other of therebetween pars intermedia office.Each constant velocity spherical joint 2,4 is connected to the input shaft 61 of wheel shaft 521 and car body side steering hardware 6.
Fig. 5 shows the instruction diagram of the tween drive shaft system 1 of the 3rd embodiment, and wherein Fig. 5 (A) is a cutaway drawing, and Fig. 5 (B) is the cutaway view that the line B-B along Fig. 5 (A) is done, and Fig. 5 (C) is the cutaway view that the line C-C along Fig. 5 (A) is done.
The structure of tween drive shaft system 1 is as follows.Constant velocity spherical joint 2,4 is formed on the end of tween drive shaft 3, and forms inner joint part 22,42 respectively, and they have constituted constant velocity spherical joint 2,4 parts.Near inner joint part 22,42 far-ends of constant velocity spherical joint 2,4 part forms sphere, in addition, forms spherical guide groove 221,421 on spherical surface.
On the other hand, coupling parts 23,43 have coupling part 239,439, and they comprise spherical recess, and form spherical guide groove 231,431 in these spherical recess.These two spherical guide grooves 221,421,231,431 extending axially along tween drive shaft 3 and coupling parts 23,43, and torque transmitting ball 24,44 is installed in respectively in these grooves in a kind of mode that can roll therein, thus linking together of can relative to each other rotating respectively of inner joint part 22,42 and coupling parts 23,43.
Coupling parts 23 and inner joint part 42 have yoke 28,48, and described yoke 28,48 can be used to respectively the input shaft 61 of wheel shaft 521 and car body side steering hardware 6 is fixed to the upper.Yoke 28,48 has axis hole 27,47 and is respectively formed at otch 271,471 in these axis holes 27,47.Binding bolt 21,41 is screwed into respectively in loosening hole 273,473 and the bolt hole 272,472, and they are respectively formed at otch 271,471 both sides, thereby respectively coupling parts 23 are fixed to wheel shaft 521, and inner joint part 42 is fixed to input shaft 61.
For when being assembled to car body with the fastening described binding bolt 21,41 of identical direction, loosening hole 273,473 is formed on the same side of tween drive shaft system 1, as shown in Figure 5, thereby might increase work efficiency.
The tween drive shaft 3 of the 3rd embodiment comprises from the inner joint part 22 whole top tween drive shafts 31 that extend downwards with from coupling parts 43 whole upwardly extending bottom intermediate shaft tubes 32.On top tween drive shaft 31, be formed with male splines 311, be formed with the female splines 321 that is adapted to fit on the male splines 311 on the bottom intermediate shaft tube 32.Top tween drive shaft 31 and bottom intermediate shaft tube 32 are connected to each other in some way, only transmit rotational force thereby make them relative to each other to slide vertically to connect by spline.Tween drive shaft 3 flexible realized a kind of structure, promptly when regulating the inclination angle of steering-column tubes 52 with respect to vehicle body 91, allows the lower end position of wheel shaft 521 to move, and in addition, the relative displacement that produces between car body side steering hardware 6 and the steering-column tube also can be absorbed.
Fig. 6 is the cutaway view of being done along the line A-A among Fig. 5, only shows the male splines 311 with involute profile among the figure.As shown in Figure 6, have the film 33 of good lubricated and resistance to abrasion, for example the film 33 of amilan, Polyester resin and polyphenylene resin is applied to the surface of male splines 311, and should polishes by scraping on the surface.In addition, for film, can use the film that comprises molybdenum disulphide.Film 33 can be applied to the surface of female splines 321 or can be applied to male splines 311 and female splines 321 on the two.Tween drive shaft 3 be configured to make the male splines 311 of said structure and female splines 321 be fitted to each other within or on, and apply grease at mating part.
Fig. 7 is the cutaway view of being done along the line A-A among Fig. 5, only shows the male splines 311 with involute profile among the figure, and this flank profil is different with flank profil shown in Figure 6.Similar to Fig. 6, in the situation of Fig. 7, have the film 33 of good lubricated and resistance to abrasion, polyamide resin membrane of lipoprotein for example also be applied to the surface of male splines 311, and the surface that so applies is polished by scraping.The place different with Fig. 6 is that the height (highly) of the tooth 312,312 that faces with each other forms less than the height of other teeth.
According to this structure, when tween drive shaft 3 used in vehicle, the part that air can be reduced by tooth height was ventilated, so male splines 311 and female splines 321 can keep smooth slip.Though shorten the height of two teeth 312,312 and be preferred,, also can only shorten the height of a tooth because the dynamical equilibrium during tween drive shaft 3 rotations has become better.In addition, also can shorten tooth height on the female splines 321.
Fig. 8 is the cutaway view of being done along the line A-A among Fig. 5, only shows among the figure to have straight-toothed male splines 311, and its flank profil is different with the flank profil shown in Fig. 6,7.To Fig. 6,7 similar, in the situation of Fig. 8, have the film 33 of good lubricated and resistance to abrasion, polyamide resin membrane of lipoprotein for example be applied to the surface of male splines 311, and the surface that so applies is polished by scraping.
Therefore, as previously mentioned, in the tween drive shaft system that is used for wheel steering system according to the 3rd embodiment, in order to eliminate click and the impact noise that produces when bearing circle is operated fully, needing the tolerance clearance approaching as much as possible zero between male splines 311 and the female splines 321 and need reduce under the situation of sliding resistance, male splines 311 and female splines 321 can be carried out selective fit.
In the 3rd embodiment, because use constant velocity spherical joint in the end of tween drive shaft 3, it comprises that with tween drive shaft the situation of traditional cardan universal joint is different, so the circumferential phase place of male splines 311 and female splines 321 will not be limited to single position.Therefore, owing to be very easy to find out the phase place of male splines 311 and female splines 321, herein, by changing their circumferential phase place, it is minimum that tolerance clearance can become, and reduced the required time of selective fit, thereby might make the tween drive shaft system with low cost.For example, utilize the male splines with 10 splines shown in Fig. 6,7, the unijunction of inside and outside spline closes and can produce 10 kinds of good possibilities of selective fit execution.
(the 4th embodiment)
As the 3rd embodiment, though comprise that according to the tween drive shaft system 1 of the 4th embodiment the be connected to each other tween drive shaft 3 and the tween drive shaft 3 of universal-joint of the constant velocity spherical joint that is positioned at its top and bottom and midway location place betwixt comprises that top tween drive shaft 31 and bottom intermediate shaft tube 32, the four embodiment are being connected between top tween drive shaft 31 and bottom intermediate shaft tube 32 to use sawtooth to connect with the difference of the 3rd embodiment and spring has been installed to connect the loosening of onset part to prevent sawtooth.
In the following description, will be only describe the place different with the 3rd embodiment, the description of elsewhere and the cutaway view done along line B-B, the C-C of Fig. 9 can be with reference to the description of the 3rd embodiment.Fig. 9 is the instruction diagram of the tween drive shaft system 1 of the 4th embodiment, and Figure 10 is the amplification view of serration mating part shown in Figure 9.
As shown in Figures 9 and 10, the tween drive shaft 3 of the 4th embodiment comprises from the inner joint part 22 whole top tween drive shafts 31 that extend downwards with from coupling parts 43 whole upwardly extending bottom intermediate shaft tubes 32, outer sawtooth 314 is formed on the top tween drive shaft 31, and the interior sawtooth 322 that is adapted to fit on the outer sawtooth 314 is formed on the bottom intermediate shaft tube 32.
Top tween drive shaft 31 and bottom intermediate shaft tube 32 are connected to each other in some way, only transmit rotational force thereby make them relative to each other to slide vertically to connect by sawtooth.Tween drive shaft 3 flexible realized a kind of structure, promptly when regulating the inclination angle of steering-column tubes 52 with respect to vehicle body 91, allows the lower end position of wheel shaft 521 to move, and in addition, the relative displacement that produces between car body side steering hardware 6 and the steering-column tube also can be absorbed.
What be parallel to top tween drive shaft 31 outside on the sawtooth 314 axially is formed with elongated slot 315, and wavy leaf spring 316 is inserted in the elongated slot 315.Leaf spring 316 applies bias force along the direction perpendicular to axis between outer sawtooth 314 and the interior sawtooth 322, thereby has eliminated the generation of becoming flexible and prevented click and impact noise between outer sawtooth 314 and the interior sawtooth 322.
Similar to the 3rd embodiment, in the situation of the 4th embodiment, also can carry out certain processing, promptly, film 33 with good lubricated and resistance to abrasion, for example the polyamide resin membrane of lipoprotein 33, be applied on the surface of outer sawtooth 314 or interior sawtooth 322 or be coated in outer sawtooth 314 and the two surface of interior sawtooth 322 on, and should the surface or those surfaces polish by scraping.
In the tween drive shaft system that is used for wheel steering system according to the 4th embodiment, under the click that when needs are eliminated the bearing circle operation fully, produces and the situation of impact noise, when outer sawtooth 314 and interior sawtooth 322 execution selective fits, because as the situation of the 3rd embodiment, used constant-velocity universal joint in the end of tween drive shaft 3, it comprises that with tween drive shaft the situation of traditional cardan universal joint is different, beyond the circumferential phase place of sawtooth 314 and interior sawtooth 322 will not be limited to single position.
Therefore, owing to be very easy to find out the phase place of outer sawtooth 314 and interior sawtooth 322, herein, by changing their circumferential phase place, it is minimum that tolerance clearance can become, and reduced the required time of selective fit, thereby might make the tween drive shaft system with low cost.
(the 5th embodiment)
Figure 11 is the part sectional view of the tween drive shaft system 1 of the 5th embodiment.Hereinafter, will be only describe the place different with the 3rd embodiment, the description of elsewhere and the cutaway view done along line B-B, the C-C of Figure 11 can be with reference to the description of the 3rd embodiment.The 5th embodiment is such, and promptly one of them constant velocity spherical joint among the 3rd embodiment replaces with cardan universal joint.
The first yoke arm that constitutes a pair of arm and constitute cardan universal joint 7 parts is to 71 right-hand ends that are formed on top tween drive shaft 31.The yoke 78 of cardan universal joint 7 is inserted in the wheel shaft 521 and by binding bolt and fixes in place, and wherein this binding bolt is inserted in the loosening hole 773.The second yoke arm that constitutes a pair of arm is formed on the yoke 78 72.
Therefore, as previously described, the tween drive shaft system that is used for wheel steering system at the 5th embodiment, because use cheap cardan universal joint as one of them universal-joint and use constant velocity spherical joint as another universal-joint, so when as the situation of the 3rd embodiment and second embodiment, carrying out the selective fit of male splines 311 and female splines 321, it comprises that with tween drive shaft the situation of traditional cardan universal joint is different, because constant velocity spherical joint is used as tween drive shaft 3 one of them universal-joint, the circumferential phase place of male splines 311 and female splines 321 will not be limited to single position.
Therefore, owing to be very easy to find out the phase place of male splines 311 and female splines 321, herein, by changing their circumferential phase place, it is minimum that tolerance clearance can become, and reduced the required time of selective fit, thereby might make the tween drive shaft system with low cost.
Industrial usability
According to shaft coupling of the present invention system, because combine Cardon universal joint ten thousand easy to manufacture and that cost is low To the constant velocity spherical joint that saves and eliminated essential consideration intersecting axle line angle, so constant velocity spherical joint Can be set to and bear bigger intersecting axle line angle to process because that the restriction of vehicle layout causes is overall On bigger intersecting axle line angle. Thus, might provide certain advantage, that is, can provide generation littler Change in torque and cheap shaft coupling system.
Claims (5)
1. wheel steering system that comprises the tween drive shaft system comprises:
Be used for transmitting input shaft from the rotation of bearing circle;
Tween drive shaft, thus described tween drive shaft comprises top tween drive shaft, bottom tween drive shaft and is used in some way described top tween drive shaft being connected to described bottom tween drive shaft and makes them to endwisely slip and transmit the connecting device of rotation betwixt along it;
Be used for the output shaft of the steering hardware on the powered vehicle;
Between described input shaft and described top tween drive shaft, provide the bonded assembly cardan universal joint; And
Between described bottom tween drive shaft and described output shaft, provide the bonded assembly constant-velocity universal joint.
2. wheel steering system as claimed in claim 1 is characterized in that, described constant-velocity universal joint is a constant velocity spherical joint.
3. wheel steering system as claimed in claim 1 or 2 is characterized in that, described connecting device be spline connecting device or sawtooth connecting device and
The surface of the connecting bridge on the outside of described spline connecting device or described sawtooth connecting device or inboard either side at least is formed with the polyamide resin membrane of lipoprotein.
4. wheel steering system as claimed in claim 1 or 2 is characterized in that, described connecting device be the sawtooth connecting device and
Between the outside of described sawtooth connecting device and inboard, be provided with biasing member to apply bias force along direction perpendicular to its axis.
5. wheel steering system as claimed in claim 1 or 2 is characterized in that described connecting device is the spline connecting device, and it is characterized in that,
The height of at least one tooth of described spline connecting device is made the height less than other teeth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP176849/2003 | 2003-06-20 | ||
| JP2003176849A JP2005008121A (en) | 2003-06-20 | 2003-06-20 | Shaft joint device for vehicle steering device |
| JP331040/2003 | 2003-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1805873A CN1805873A (en) | 2006-07-19 |
| CN100400354C true CN100400354C (en) | 2008-07-09 |
Family
ID=34099610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800163906A Expired - Fee Related CN100400354C (en) | 2003-06-20 | 2004-06-07 | Motor vehicle steering device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005008121A (en) |
| CN (1) | CN100400354C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010009845A1 (en) * | 2009-03-02 | 2010-11-18 | GM Global Technology Operations, Inc., Detroit | Constant velocity joint |
| CN102292563B (en) * | 2010-02-17 | 2015-06-10 | 日本精工株式会社 | Joint cross type universal joint yoke and method of manufacturing same |
| JP5551524B2 (en) * | 2010-06-21 | 2014-07-16 | 中央発條株式会社 | Steering device and connecting wire |
| JP5807775B2 (en) * | 2011-08-29 | 2015-11-10 | 株式会社ジェイテクト | Steering device and cross joint |
| CN102795258A (en) * | 2012-08-31 | 2012-11-28 | 浙江春风动力股份有限公司 | Steering shaft device for all-terrain vehicle |
| CN103738391A (en) * | 2013-12-27 | 2014-04-23 | 一汽解放柳州特种汽车有限公司 | Automobile steering wheel position adjusting device |
| DE102014002519B3 (en) * | 2014-02-22 | 2015-06-25 | Daimler Ag | Motor vehicle steering, assembly auxiliary tool and assembly method for a motor vehicle steering |
| JP6570005B2 (en) * | 2015-07-09 | 2019-09-04 | 株式会社ジェイテクト | Manufacturing method of rotating element |
| JP6622653B2 (en) * | 2016-06-06 | 2019-12-18 | 株式会社ジェイテクト | Spline telescopic shaft manufacturing method |
| CN108214517B (en) * | 2018-03-08 | 2023-10-31 | 贵州电网有限责任公司 | Longitudinally-bendable air robot for cleaning tree barriers of duct structure |
| CN108713411B (en) * | 2018-03-08 | 2023-10-20 | 南京太司德智能科技有限公司 | Tree obstacle clearance aerial robot of duct structure |
| CN108353672B (en) * | 2018-03-08 | 2023-10-20 | 南京太司德智能科技有限公司 | Tree obstacle cleaning aerial robot with rotatable cutter plane |
| CN108551907B (en) * | 2018-03-08 | 2023-11-10 | 贵州电网有限责任公司 | Tree obstacle cleaning aerial robot capable of being bent longitudinally |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113334U (en) * | 1991-03-20 | 1992-10-02 | 日本精工株式会社 | Coupling device for universal joint yoke and rotating shaft |
| US5464251A (en) * | 1992-12-30 | 1995-11-07 | Daumal Castellon; Melchor | Telescopic shaft |
| JP2000257645A (en) * | 1999-03-04 | 2000-09-19 | Ntn Corp | Constant velocity universal joint |
| JP2001182736A (en) * | 1999-12-24 | 2001-07-06 | Koyo Seiko Co Ltd | Freely extendable shaft |
| JP2002264825A (en) * | 2001-03-09 | 2002-09-18 | Koyo Seiko Co Ltd | Intermediate shaft for steering device |
-
2003
- 2003-06-20 JP JP2003176849A patent/JP2005008121A/en active Pending
-
2004
- 2004-06-07 CN CNB2004800163906A patent/CN100400354C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113334U (en) * | 1991-03-20 | 1992-10-02 | 日本精工株式会社 | Coupling device for universal joint yoke and rotating shaft |
| US5464251A (en) * | 1992-12-30 | 1995-11-07 | Daumal Castellon; Melchor | Telescopic shaft |
| JP2000257645A (en) * | 1999-03-04 | 2000-09-19 | Ntn Corp | Constant velocity universal joint |
| JP2001182736A (en) * | 1999-12-24 | 2001-07-06 | Koyo Seiko Co Ltd | Freely extendable shaft |
| JP2002264825A (en) * | 2001-03-09 | 2002-09-18 | Koyo Seiko Co Ltd | Intermediate shaft for steering device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1805873A (en) | 2006-07-19 |
| JP2005008121A (en) | 2005-01-13 |
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