CN204020968U - A kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines - Google Patents
A kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines Download PDFInfo
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- CN204020968U CN204020968U CN201420431823.5U CN201420431823U CN204020968U CN 204020968 U CN204020968 U CN 204020968U CN 201420431823 U CN201420431823 U CN 201420431823U CN 204020968 U CN204020968 U CN 204020968U
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Abstract
The telescopic lower drive shaft that turns to that the utility model relates to a kind of energy auto-compensation spline wearing clearance combines, it is characterized in that, described transmission shaft combination comprises lower cardan fork, universal joint cross-head, universal joint cross-head, apply mechanically joint yoke, axle joint yoke, upper cardan fork, described lower cardan fork by universal joint cross-head with apply mechanically joint yoke and be connected, described axle is connected with upper cardan fork by universal joint cross-head with joint yoke, described transmission shaft combination also comprises telescopic driving device, described telescopic driving device is arranged on to be applied mechanically between joint yoke and axle joint yoke.This device make automobile in the process of moving due to the elastic force effect of obtuse angle V-arrangement spring leaf and the effect of steering shaft rotary centrifugal force make steel ball all the time with spline housing in right angle V-arrangement face and obtuse angle V-arrangement spring leaf in tight engagement, thereby play the effect of auto-compensation spline wearing clearance, prevent abnormal sound, increased the safety performance of running car.
Description
Technical field
The present invention relates to a kind of setting device, specifically a kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines, and belongs to automobile steering transmission device technical field.
Background technology
Automobile steering transmission device is mainly combined, is turned to lower drive shaft combination, steering wheel etc. to form by bearing circle, steering shaft combination, steering column at present.Turning to lower drive shaft combination is the important component part of automobile steering transmission device, connects steering shaft on it, the lower steering wheel that connects, and its function is mainly to transmit to turn to alternate torque.The telescopic joint yoke that turns to lower drive shaft combination two ends to adopt spline form, upper end joint yoke is connected with steering shaft lower end male splines by female splines, lower end joint yoke is connected with traversing pinion axle male splines by female splines, upper cardan fork is connected by universal joint cross-head and castellated shaft, lower cardan fork is connected with spline housing combination by universal joint cross-head, and castellated shaft can free-extension in spline housing.Automobile in the process of moving, often need to adjust and change travel direction, when pilot control bearing circle, by steering shaft, alternate torque is passed to lower drive shaft, through steering wheel, power is transferred to again to the steering swivel of steeraxle both sides, make wheel flutter angle of inclination by certain relationship change, realize wheel steering.
Existingly telescopicly turn to lower drive shaft combination to mainly contain three kinds of versions, to be that spline housing end is uniform arrange four open slots to one, adopts steel band clip to be held tightly, and castellated shaft can free-extension in spline housing; Another kind is at castellated shaft outside face or at spline housing inside face coating one deck nylon layer, ensures that free-sliding spline has rational tolerance clearance; Also having one is to adopt steel ball bobbin type structure, when assembling, by adjusting steel ball size, reaches the object that meets spline fitted gap.Above-mentioned three kinds of structures are in the initial stage of dispatching from the factory, and castellated shaft is capable of expansion and contraction in spline housing, has certain sliding resistance, and performance safety is reliable.But, when running car exceedes certain mileage, in the time jolting road traveling, easily cause violent vibrations especially, under the effect of reverse load, accelerate the wearing and tearing of wearing and tearing, especially free-sliding spline of related components, problem is: existing structure all cannot make up the tolerance clearance that the free-sliding spline that causes because of wearing and tearing increases gradually, thereby cause producing abnormal sound, pass in operator's compartment, directly affect driving performance, bring great accident potential to ride safety of automobile.Therefore, solve the problems of the technologies described above in the urgent need to a kind of new technical scheme.
Summary of the invention
The present invention is just for the technical matters existing in prior art, provide a kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance to combine, this device integral structure relates to ingenious, easy to operate, this device makes automobile in the process of moving due to the elastic force effect of obtuse angle V-arrangement spring leaf, make steel ball all the time with spline housing in right angle V-arrangement face and obtuse angle V-arrangement spring leaf in tight engagement, thereby play the effect of auto-compensation spline wearing clearance, prevent abnormal sound, increased the safety performance of running car.
To achieve these goals, the technical solution used in the present invention is, a kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines, it is characterized in that, described transmission shaft combination comprises lower cardan fork, universal joint cross-head, universal joint cross-head, apply mechanically joint yoke, axle joint yoke, upper cardan fork, described lower cardan fork by universal joint cross-head with apply mechanically joint yoke and be connected, described axle is connected with upper cardan fork by universal joint cross-head with joint yoke, described transmission shaft combination also comprises telescopic driving device, described telescopic driving device is arranged on to be applied mechanically between joint yoke and axle joint yoke.
As a modification of the present invention, described telescopic driving device comprises spline housing, packing ring, ball retainer, steel ball, rubber pad, castellated shaft, Ka Gai, obtuse angle V-arrangement spring leaf and circlip for shaft, described joint yoke and the spline housing applied mechanically is by being welded to connect, rubber pad is fixed on spline housing by Ka Gai, described castellated shaft and axle with joint yoke by being welded to connect, axle is connected with upper cardan fork by universal joint cross-head with joint yoke, described steel ball 7 is assembled on ball retainer, ball retainer passes through packing ring, circlip for shaft is assembled on castellated shaft, obtuse angle V-arrangement spring leaf is arranged in castellated shaft and contacts with steel ball.The castellated shaft of coating nylon layer can free-extension in spline housing, and keeps certain sliding resistance.
As a modification of the present invention, described obtuse angle two knuckle rectangular sheets of V-arrangement spring leaf one end V-type vertical direction are assembled between ball retainer and the step of castellated shaft axle head, and two knuckle rectangular sheets of other end V-arrangement horizontal direction are assembled in the inner side increment of castellated shaft involute gear profile.
As a modification of the present invention, described castellated shaft involute gear profile coating nylon coating, its effect is because nylon film has very high intensity, can bear for a long time load, nylon film has good rebound resilience, can there is not permanent deformation in spline involute surface, the fracture that keeps toughness to produce due to repeated stock load with opposing; Static friction coefficient and the dynamic friction coefficient of nylon film are little, and wear resisting property is fine, have again wear-resistant self-lubricating performance; Relatively steel part noise is low for nylon film, can reduce noise 20-25dB, prevents abnormal sound; Water-fast, salt spray resistance, the weather resisteant of nylon film can be good; Castellated shaft arranges two acute angle V-shaped grooves along circle center's symmetry direction, described two acute angle V-shaped grooves are used for holding V-type spring leaf, steel ball and ball retainer, obtuse angle V-arrangement spring leaf is arranged in the acute angle V-shaped groove of castellated shaft and contacts with steel ball, its effect is on the basis of existing technology, the device that a kind of energy auto-compensation free-sliding spline wearing clearance is set, these two V-type grooves are just for the core component V-type spring leaf and steel ball, the ball retainer that hold this device design.
As a modification of the present invention, on described spline housing, be provided with two right angle V-type grooves.Described right angle V-type groove is for holding two groups of steel balls, its effect has 2 points, the one, matching spline is jointly undertaken to transmit and is turned to alternate torque, the 2nd, in the process of progressively wearing and tearing in spline fitted, because the elastic force effect of V-type spring leaf and the effect of steering shaft rotary centrifugal force make steel ball and spline housing V-type groove all the time in tight engagement, steel ball is converted into main transmission alternate torque by auxiliary transmission alternate torque, has reached the object of auto-compensation spline wearing clearance.
As a modification of the present invention, described ball retainer is integral structure, and center, one end arranges mounting hole, coordinates with castellated shaft axle head step surface, and the other end is opening form, along circumference symmetry direction, two groups of evenly distributed steel-ball grooves is set.Can make steel ball always in a kind of free state as the opening form of ball retainer one end that steel ball uses is installed, under the effect of V-type spring leaf all the time with the V-shaped groove of spline housing in the tight engagement of one.
With respect to prior art, advantage of the present invention is as follows, 1) unit design is ingenious, novel, reliable, practical, and disassembly and assembly convenient maintenance and replacement, cost are lower; 2) in this technical scheme due to the elastic force effect of obtuse angle V-arrangement spring leaf, make the interior right angle of steel ball and obtuse angle V-arrangement spring leaf and spline housing V-shaped groove all the time in tight engagement, thereby energy auto-compensation free-sliding spline is because of the gap of wearing and tearing generation, overcome the defect that the wearing and tearing of prior art free-sliding spline cannot compensate for wear gap, eliminate the abnormal sound producing because of free-sliding spline wearing and tearing, effectively increase the safety performance of running car, extended the service life of running car.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cross section view of Fig. 1;
Fig. 3 is the schematic diagram of V-arrangement spring leaf;
Fig. 4 is the schematic diagram of castellated shaft;
Fig. 5 is castellated shaft, spline housing correspondence position schematic diagram;
Fig. 6 is nylon cages schematic diagram;
Wherein, 1, lower cardan fork, 2, universal joint cross-head, 3, apply mechanically joint yoke, 4, spline housing, 5, packing ring, 6, ball retainer, 7, steel ball, 8, rubber pad, 9, castellated shaft, 10, axle joint yoke, 11, universal joint cross-head, 12, upper cardan fork, 13, Ka Gai, 14, obtuse angle V-arrangement spring leaf, 15, circlip for shaft, 16, coating nylon layer, 17, acute angle V-type groove, 18, right angle V-type groove, 19, steel-ball groove.
Detailed description of the invention
In order to deepen the understanding of the present invention and understanding, below in conjunction with accompanying drawing, the invention will be further described and introduction.
embodiment 1:as Fig. 1, a kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines, described transmission shaft combination comprises lower cardan fork 1, universal joint cross-head 2, universal joint cross-head 11, apply mechanically joint yoke 3, joint yoke 10 for axle, upper cardan fork 12, described lower cardan fork 1 by universal joint cross-head 2 with apply mechanically joint yoke 3 and be connected, described axle is connected with upper cardan fork 12 by universal joint cross-head 11 with joint yoke 10, described transmission shaft combination also comprises telescopic driving device, described telescopic driving device is arranged on to be applied mechanically between joint yoke 3 and axle joint yoke 10.This technical scheme makes the wearing clearance of spline obtain auto-compensation, thereby has eliminated the vibrations and the abnormal sound that produce because of spline wearing and tearing, has improved the safety performance of running car, has extended the service life of running car.
embodiment 2:as Fig. 1, as a modification of the present invention, described telescopic driving device comprises spline housing 4, packing ring 5, ball retainer 6, steel ball 7, rubber pad 8, castellated shaft 9, card covers 13, obtuse angle V-arrangement spring leaf 14 and circlip for shaft 15, described apply mechanically joint yoke 3 with spline housing 4 by being welded to connect, rubber pad 8 covers 13 by card and is fixed on spline housing 4, described castellated shaft 9 with axle with joint yoke 10 by being welded to connect, axle is connected with upper cardan fork 12 by universal joint cross-head 11 with joint yoke 10, described steel ball 7 is assembled on ball retainer 6, ball retainer 6 is by packing ring 5, circlip for shaft 15 is assembled on castellated shaft 9, obtuse angle V-arrangement spring leaf 14 is arranged in castellated shaft 9 and contacts with steel ball 7.Castellated shaft 9 spline housing 4 is interior can free-extension, and keep certain sliding resistance.All the other structures are identical with embodiment 1 with advantage.
embodiment 3:as Fig. 1, Fig. 3, as a modification of the present invention, two knuckle rectangular sheets of described obtuse angle V-arrangement spring leaf 14 one end V-type vertical direction are assembled between ball retainer 6 and the step of castellated shaft 9 axle heads, and two knuckle rectangular sheets of other end V-arrangement horizontal direction are assembled in the inner side increment of castellated shaft 9 involute gear profiles.All the other structures are identical with embodiment 1 with advantage.
embodiment 4:as Fig. 1, Fig. 4, as a modification of the present invention, described castellated shaft 9 involute gear profile coating nylon coatings (16), its effect is because nylon film has very high intensity, can bear for a long time load, nylon film has good rebound resilience, and permanent deformation can not occur spline involute surface, the fracture that keeps toughness to produce due to repeated stock load with opposing; Static friction coefficient and the dynamic friction coefficient of nylon film are little, and wear resisting property is fine, have again wear-resistant self-lubricating performance; Relatively steel part noise is low for nylon film, can reduce noise 20-25dB, prevents abnormal sound; Water-fast, salt spray resistance, the weather resisteant of nylon film can be good; Castellated shaft 9 arranges two acute angle V-shaped grooves 17 along circle center's symmetry direction, described two acute angle V-shaped grooves 17 are for holding V-type spring leaf 14, steel ball 7 and ball retainer 6, obtuse angle V-arrangement spring leaf 14 is arranged in the acute angle V-shaped groove 17 of castellated shaft 9 and contacts with steel ball 7, and this V-type groove is just for the core component V-type spring leaf 14 and steel ball 7, the ball retainer 6 that hold this device design.All the other structures are identical with embodiment 1 with advantage.
embodiment 5:as Fig. 1, Fig. 5, as a modification of the present invention, on described spline housing 4, be provided with two right angle V-type grooves 18.4 two right angle V-type grooves 18 of spline housing are for holding two groups of steel balls, its effect has 2 points, the one, matching spline is jointly undertaken to transmit and is turned to alternate torque, the 2nd, in the process of progressively wearing and tearing in spline fitted gap, because the elastic force effect of V-type spring leaf and the effect of steering shaft rotary centrifugal force make steel ball and spline housing V-type groove all the time in tight engagement, steel ball is converted into main transmission alternate torque by auxiliary transmission alternate torque, has reached the object of auto-compensation spline wearing clearance.All the other structures are identical with embodiment 1 with advantage.
embodiment 6:as Fig. 1, Fig. 6, as a modification of the present invention, described ball retainer 6 is integral structure, center, one end arranges mounting hole, coordinate with castellated shaft 9 axle head step surfaces, the other end is opening form, along circumference symmetry direction, two groups of evenly distributed steel-ball grooves 19 is set.Can make steel ball 7 always in a kind of free state as the opening form that ball retainer 6 one end of using of steel ball 7 are installed, under the effect of V-type spring leaf 14 all the time with the V-shaped groove of spline housing 4 in the tight engagement of one.All the other structures are identical with embodiment 1 with advantage.
Principle of work:
Participate in Fig. 1-Fig. 6, in the technical program, provide a kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance to combine, in this technical scheme, be provided with novel obtuse angle V-arrangement spring leaf 14, this part adopts high strength, high abrasion, elastomeric high-quality leaf spring steel plate to be made through cold stamping; Referring to Fig. 4, castellated shaft 9 arranges two acute angle V-shaped grooves 17 in radial symmetry direction, circumferencial direction acute angle V-shaped groove both sides are invoice serration, employing cold-extrusion technology is shaped, invoice serration adopts surperficial nylon-coating process, and push away and be moulded shape through knife edge due, reach the requirement of engaging with spline housing female splines; See Fig. 5, spline housing 4 arranges two interior right angle V-shaped grooves 18 at the correspondence position coordinating with castellated shaft 9; See Fig. 6, ball retainer is integral structure, and center, one end arranges mounting hole, coordinates with castellated shaft axle head step surface, and the other end is opening form, and circumference symmetry direction arranges two groups of evenly distributed steel-ball grooves 19, adopts nylon injection-molding to be shaped.Obtuse angle V-arrangement spring leaf 14, make castellated shaft 9, spline housing 4 is in stretching operation process, because the elastic force effect of obtuse angle V-arrangement spring leaf 14 and the effect of steering shaft rotary centrifugal force make steel ball 7 and the interior right angle of spline housing 4 V-shaped groove 18 and obtuse angle V-arrangement spring leaf 14 all the time in close contact state, even in the situation that spline progressively weares and teares, the elastic force effect of obtuse angle V-arrangement spring leaf 14 still exists, make the wearing clearance of spline obtain auto-compensation, thereby the vibrations and the abnormal sound that produce because of spline wearing and tearing are eliminated, improve the safety performance of running car, extend the service life of running car.
The present invention can also be combined to form new embodiment by least one and embodiment 1 in technical characterictic described in embodiment 2,3,4,5,6.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, the equivalents of having done on the basis of technique scheme or substitute and all fall into the scope that the claims in the present invention are protected.
Claims (6)
1. the telescopic lower drive shaft that turns to of an energy auto-compensation spline wearing clearance combines, it is characterized in that, described transmission shaft combination comprises lower cardan fork (1), universal joint cross-head (2), universal joint cross-head (11), apply mechanically joint yoke (3), joint yoke for axle (10), upper cardan fork (12), described lower cardan fork (1) by universal joint cross-head (2) with apply mechanically joint yoke (3) and be connected, described for axle joint yoke (10) pitch (12) by universal joint cross-head (11) and upper cardan and be connected, described transmission shaft combination also comprises telescopic driving device, described telescopic driving device is arranged on applies mechanically joint yoke (3) and for axle between joint yoke (10).
2. the telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance as claimed in claim 1 combines, it is characterized in that, described telescopic driving device comprises spline housing (4), packing ring (5), ball retainer (6), steel ball (7), rubber pad (8), castellated shaft (9), Ka Gai (13), obtuse angle V-arrangement spring leaf (14) and circlip for shaft (15), described joint yoke (3) and the spline housing (4) applied mechanically is by being welded to connect, rubber pad (8) is fixed on spline housing (4) by Ka Gai (13), described castellated shaft (9) with for axle joint yoke (10) by being welded to connect, joint yoke for axle (10) is connected with upper cardan fork (12) by universal joint cross-head (11), described steel ball (7) is assembled on ball retainer (6), ball retainer (6) is by packing ring (5), circlip for shaft (15) is assembled in ball retainer on castellated shaft (9), obtuse angle V-arrangement spring leaf (14) is arranged in castellated shaft (9) and contacts with steel ball (7).
3. the telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance as claimed in claim 2 combines, it is characterized in that, V-type vertical direction two knuckle rectangular sheets in described obtuse angle V-arrangement spring leaf (14) one end are assembled between ball retainer (6) and the step of castellated shaft (9) axle head, and two knuckle rectangular sheets of other end V-arrangement horizontal direction are assembled in the inner side increment of castellated shaft (9) involute gear profile.
4. the telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance as claimed in claim 2 combines, and it is characterized in that described castellated shaft (9) involute gear profile coating nylon coating (16); Castellated shaft (9) arranges two acute angle V-shaped grooves (17) along circle center's symmetry direction, described two acute angle V-shaped grooves are used for holding V-type spring leaf (14), steel ball (7) and ball retainer (6), and obtuse angle V-arrangement spring leaf (14) is arranged in castellated shaft (9) and contacts with steel ball (7).
5. the telescopic lower drive shaft that turns to of the energy auto-compensation spline wearing clearance as described in claim 3 or 4 combines, and it is characterized in that, is provided with two right angle V-type grooves (18) on described spline housing (4).
6. the telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance as claimed in claim 5 combines, it is characterized in that, described ball retainer (6) is integral structure, center, one end arranges mounting hole, coordinate with castellated shaft (9) axle head step surface, the other end is opening form, along circumference symmetry direction, two groups of evenly distributed steel-ball grooves (19) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431823.5U CN204020968U (en) | 2014-08-01 | 2014-08-01 | A kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431823.5U CN204020968U (en) | 2014-08-01 | 2014-08-01 | A kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204020968U true CN204020968U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420431823.5U Expired - Fee Related CN204020968U (en) | 2014-08-01 | 2014-08-01 | A kind of telescopic lower drive shaft that turns to of energy auto-compensation spline wearing clearance combines |
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| CN (1) | CN204020968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118471A (en) * | 2014-08-01 | 2014-10-29 | 江苏金也汽车配件有限公司 | Lower stretchable steering transmission shaft assembly capable of automatically compensating for spline abrasion gap |
-
2014
- 2014-08-01 CN CN201420431823.5U patent/CN204020968U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118471A (en) * | 2014-08-01 | 2014-10-29 | 江苏金也汽车配件有限公司 | Lower stretchable steering transmission shaft assembly capable of automatically compensating for spline abrasion gap |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20190801 |