CN102941787A - Extension-type guide rod for integral ball spline pair - Google Patents
Extension-type guide rod for integral ball spline pair Download PDFInfo
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- CN102941787A CN102941787A CN2012103748871A CN201210374887A CN102941787A CN 102941787 A CN102941787 A CN 102941787A CN 2012103748871 A CN2012103748871 A CN 2012103748871A CN 201210374887 A CN201210374887 A CN 201210374887A CN 102941787 A CN102941787 A CN 102941787A
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Abstract
The invention relates to an extension-type guide rod for an integral ball spline pair. The expansion-type guide rod for the integral ball spline pair comprises a rubber bushing, a spline shaft connecting rod, a snap spring, an O-shaped seal ring, balls, a ball retainer, a spline shaft sleeve connecting rod and a dustproof cover, wherein the spline shaft connecting rod is provided with a plurality of outer roller paths uniformly distributed in the circumference direction, and the cross section of the roller path is arc; the spline shaft sleeve connecting rod is provided with uniformly and peripherally distributed inner roller paths, the number and the shapes of the inner roller paths and those of the outer roller paths are the same, and the inner roller paths and the outer roller paths meet the corresponding matching relation; and the ball retainer is in a cylinder shape and is provided with uniformly and peripherally distributed ball installation holes, and the balls and the ball retainer are respectively assembled with the spline shaft connecting rod and the spline shaft sleeve connecting rod after being assembled to from the integral ball spline pair. The extension guide rod for the integral ball spline pair is simple in structure and convenient to distribute, and can be applied to front and back independent suspensions of an automobile and other mechanical structures making alignment translational movements.
Description
Technical field
The present invention relates to the pilot bar field in automobile suspension system and other boning out motion of translation structures, specifically, be the secondary scalable pilot bar of a kind of whole ball spline.
Background technology
Suspension be guarantee to have between wheel or vehicle bridge and the automobile bearing system (vehicle frame or self-supporting body) the elasticity contact and can transmitted load, mitigation impact, damped vibration and the vehicles general name of the relative assembly such as vehicle body position in the process of moving.General suspension mainly is comprised of elastic element, shock absorption device and guiding mechanism three parts.In some cases, a certain parts held concurrently two kinds or three kinds of effects are such as the steel spring effect of elastic element and guiding mechanism of having held concurrently.Wherein the function of guiding mechanism is to guarantee force and moment reliable delivery all between wheel and vehicle body or the vehicle frame, and determines that wheel is with respect to the placement property of vehicle body or vehicle frame.Path of motion when guiding mechanism has determined wheel bounce and the situation of change of wheel alignment parameter, and the position at roll center and trim center before and after the automobile have affected road-holding property and the anti-trim ability of car load to a great extent.
According to the characteristics of guiding mechanism, automotive suspension mainly can be divided into dependent suspension and independent suspension two large classes.The characteristic feature of dependent suspension is to be connected by a buttress bracing struts or non-disconnected vehicle bridge between the left and right wheels, when monolateral wheel bounce, directly has influence on the opposite side wheel.Stationarity and the traveling comfort of Non-separation suspension system are relatively poor, but have again the characteristics that cost is low, bearing capacity is large simultaneously, and rear suspension and lorry, the motorcoach of part C-class are equipped with this suspension system at present.The constructional feature of independent suspension is that the wheel of both sides connects with vehicle body or vehicle frame by resilient suspension individually, and vehicle bridge is made breakaway-element.Therefore, independent suspension has following advantage independent suspension to have the following advantages: 1. the both sides wheel can be independent of each other by independently moving, improves handling; 2. reduce nonspring carried mass, be conducive to the ride comfort of automobile; 3. adopt broken bridge of car, can reduce engine location, reduce the car load center of gravity; 4. the wheel movement space is larger, can reduce suspension rate, improves ride comfort.Above advantage is widely used on the modern automobile independent suspension, and particularly the wheel flutter of car has all generally adopted independent suspension, and in order to improve driving safety, the rear overhang of increasing luxury car has also adopted independent suspension.
The difference aspect of suspension property, guiding mechanism account for very large factor, and the characteristics of motion of guiding mechanism directly affects the variation of wheel alignment parameter.Although the structure of suspension is different, its final purpose all is so that the variation of Front wheel Alignment Parameters in motion process is reasonable and as far as possible little by various designs.At present, most widely used independent suspension mainly contains on automobile: McPherson strut, double cross arm independent suspension and multi-connecting-rod separated suspension.Generally speaking, current most economical independent front suspension applicable, that cost performance is the highest is MacPherson type; The suspension that can do High Performance adjustment and coupling is many connecting rods and double wish-bone arm type; What structure was the most complicated, practical function is maximum is Multi-link suspension.
Although conventional independent suspension can both satisfy the suspension design requirement on function at present, when wheel bounce, wheel alignment parameter all can change.In actual applications, the variation of any positional parameter of wheel all can have a negative impact to vehicle handling stability or other aspect performances, can cause automobile straight line driveability to descend such as the variation of wheelspan, also cause simultaneously rolling resistance to increase and on the impact of steering swivel system; The variation of camber angle can cause the abnormal tyre wearing and tearing.McPherson suspension is when the wheel bob, and its shock absorber lower fulcrum is along with transversal swinging arm swings, and the oblique angle of main pin axis changes thereupon, so its wheel alignment parameter has larger variation when suspension moves.Two fork arm type equal suspensions can make wheel and stub parameter change little by lower cross arm on the appropriate design; But owing to being subjected to the restriction of guiding mechanism motion principle, can not fundamentally solving the part positional parameter and change excessive problem.Resonable the touching upon of multi-link lever suspension fork path of motion in fact all is complicated space curve, so that the situation of change of wheel alignment parameter in wheel bob process is more abominable than traditional McPherson suspension and double wishbone suspension etc.; And the difficulty of suspension adjustment and coupling is large, and its motion and tractive performance are very responsive to construction parameter, if mate improperly, the variation range of wheel alignment parameter can be very large.
How to design the guiding mechanism of independent suspension, so that can guarantee that its positional parameter is substantially constant during wheel bounce, this is a Focal point and difficult point in the suspension frame structure innovative design.Traditional independent suspension pilot bar does not have automatically retractable bit shift compensation function, universal group and Tsing-Hua University once united a kind of linear guiding mechanism that can be used in automotive suspension of proposition, referring to [1. an outstanding person, Zhao Jingshan, the money holt, Wang Jianyi. a kind of elastic multi-link linear guide independent suspension [P]. Chinese patent: CN201110218599.2,2012-02-22.], [2. an outstanding person, Zhao Jingshan, the money holt, Liu is to. a kind of 3-RRR mechanism [P] with straight-line motion flexible compensation function. Chinese patent: CN201110215810.5,2011-12-21.].Tiestrut is elastic rod in the above-mentioned patent [1], and rigidity is relatively poor longitudinally along wheel for its guiding mechanism, and the guiding mechanism bob is during to end position, and elastic rod may produce motion and suddenly change; And elasticity, intensity and toughness for the pilot bar composite material all require very high; [2] the suspension side chain is the RRR kinematic link in, and it is along relatively poor perpendicular to the directional stiffness on the determined plane of RRR kinematic link, and hinge movement is secondary a lot, complex structure.Therefore need to seek the suspension pilot bar of the more practical automatic telescopic function realized.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned existence, and provide a kind of simple in structure, be convenient to arrange, can be used for the forward and backward independent suspension of automobile and other and do the secondary scalable pilot bar of whole ball spline among the physical construction of boning out motion of translation.
The objective of the invention is to finish by following technical solution, it comprises rubber bush, castellated shaft connecting rod, jump ring, O RunddichtringO, ball, ball retainer, hub splines connecting rod, dust boot, described castellated shaft connecting rod is provided with raceway outside some of circumferential well-distributeds, and the raceway cross-sectional plane is circular arc type; Described hub splines connecting rod be provided with around circumferential well-distributed, with the interior raceway of outer raceway equal number and shape, and interior raceway and outer raceway satisfy corresponding matching relationship; Described ball retainer is tubular, is provided with around circumferential well-distributed ball mounting hole, forms integral type ball spline pair with castellated shaft connecting rod and the assembling of hub splines connecting rod respectively after ball and the ball retainer assembling.
As preferably, described two O RunddichtringOs are installed in the outside of hub splines connecting rod side by side.
As preferably, ball skids off the jump ring that drops when being provided with to prevent work on the described ball retainer.
As preferably, described dust boot two ends are installed in respectively on castellated shaft connecting rod and the hub splines connecting rod.
As preferably, a connection end of described hub splines connecting rod is provided with pin-and-hole, and connects assembling by rubber bush and bolt with vehicle body; Connection end of described castellated shaft connecting rod is provided with pin-and-hole, and connects assembling by rubber bush and bolt with steering swivel.
The present invention compared with prior art, have the following advantages and the high-lighting effect: can be applicable to vehicle front and back independent suspension, by specific layout, realize the positional parameters such as camber angle, Kingpin inclination angle and casterangle, toeing-in (posterior cord), left and right wheels distance and wheel base of wheel, in wheel bob process, substantially remain unchanged, thereby effectively reduce the wearing and tearing of tire, and can effectively improve road-holding property, the riding comfort of automobile and the traveling comfort of taking; Because adopted all-in-one-piece ball spline secondary, pilot bar is simple and compact for structure, can be convenient for changing after the secondary wearing and tearing of ball spline, improved work life and the practicality of telescoping suspension pilot bar.
Description of drawings
Fig. 1 is the structural representation of the secondary scalable pilot bar of a kind of whole ball spline provided by the invention.
Fig. 2 is that this kind pilot bar is assemblied in the schematic diagram among many link linears parallel-moving type suspension.
Fig. 3 is the structural representation that this kind pilot bar adopts the roller spline pair.
Label in the accompanying drawing is respectively: the 1-rubber bush; 2-castellated shaft connecting rod; The 3-jump ring; The 4-O RunddichtringO; The 5-ball; The 6-ball retainer; 7-hub splines connecting rod; The 8-dust boot; The 9-steering swivel; The 10-vehicle body; 11-upside article one suspension side chain; 12-downside article one suspension side chain; 13-downside second suspension side chain; 14-upside second suspension side chain; 15-roller castellated shaft connecting rod; 16-roller hub splines connecting rod; The 17-roller; The 18-roller rolling retainer.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done detailed introduction: as shown in Figure 1, the present invention includes two rubber bushs 1, castellated shaft connecting rod 2, jump ring 3, two O RunddichtringOs 4, ball 5, ball retainer 6, hub splines connecting rod 7, dust boot 8.Castellated shaft connecting rod 2 is provided with raceway outside 4 of circumferential well-distributeds, and quantity can be 3,4,6 etc., and the raceway cross-sectional plane is circular arc type.Described hub splines connecting rod 7 be provided with around circumferential well-distributed, with the interior raceway of outer raceway equal number and shape, and interior raceway and outer raceway satisfy corresponding matching relationship; Ball retainer 6 is tubular, is provided with around circumferential well-distributed ball mounting hole, forms integral type ball splines pair with castellated shaft connecting rod 2 and 7 assemblings of hub splines connecting rod respectively after ball 5 assembles with ball retainer 6.Jump ring 3 is used for when preventing work ball and skids off and drop.Two O RunddichtringOs 4 are installed in the outside of hub splines connecting rod 7 side by side, and its effect is to prevent from the raceway that grease overflows to enter raceway with extraneous dust, water stain etc. and reduce raceway service life.The two ends of dust boot 8 are installed in respectively on castellated shaft connecting rod 2 and the hub splines connecting rod 7,, waterproof dustproof as secondary and erosion protection system.
The setting-up procedure of the secondary pilot bar of whole ball spline is: 1. rubber bush 1 is adopted the interference assembling with castellated shaft connecting rod 2 and hub splines connecting rod 7 respectively; 2. ball 5 and ball retainer 6 are assembled into integral body, put in the hub splines connecting rod 7 according to corresponding relation, then jump ring 3 and O RunddichtringO 4 are installed; 3. castellated shaft connecting rod 2 is inserted hub splines connecting rod 7 according to corresponding relation, formation only has a vertically ball spline pair of one-movement-freedom-degree; 4. dust boot 8 is installed, and is adopted clip to fix with castellated shaft connecting rod 2 and hub splines connecting rod 7 respectively.
Fig. 2 is that this kind pilot bar is assemblied in the schematic diagram among many link linears parallel-moving type suspension, and two connection ends of the secondary pilot bar of whole ball spline are provided with pin-and-hole, can connect assembling by rubber bush 1 and bolt with steering swivel 9, vehicle body 10 respectively.
Fig. 3 be the secondary pilot bar of whole ball spline embodiment two, adopt roller 17 to replace ball 5, roller castellated shaft connecting rod 15 replaces castellated shaft connecting rod 2, roller hub splines connecting rod 16 replaces hub splines connecting rod 7, roller rolling retainer 18 replaces ball retainer 6, the arc raceway of corresponding castellated shaft connecting rod 2 and hub splines connecting rod 7 has changed square raceway into, and ball retainer 6 changes strip into.
Crossing of four suspension pilot bars such as Fig. 2 retrains layout so that suspension system only has one degree of freedom, and wherein the vertical plane at four suspension side chain places is non-coplanar, and intersection conllinear or parallel.For stability of configuration and the raising load-carrying capacity that improves suspension fork mechanism, its preferred version is: the vertical plane at upside article one suspension side chain 11 and downside article one suspension side chain 12 places is coplanar, the vertical plane at upside second suspension side chain 14 and downside second suspension side chain 13 places is coplanar, and the angle on two vertical planes is 90 °.
Therefore, when the secondary pilot bar of whole ball spline provided by the present invention was applied to suspension system, according to the suspension design requirement of reality, by specific layout, the steering swivel that can make and wheel only had a up and down straight-line degree of freedom; Thereby the positional parameter of realizing wheel remains unchanged in wheel bob process substantially, effectively reduces the wearing and tearing of tire, and can effectively improve road-holding property, the riding comfort of automobile and the traveling comfort of taking; And adopt whole ball spline secondary, pilot bar is simple in structure, can change after the wearing and tearing, has improved work life and the practicality of pilot bar.Simultaneously, the present invention can also be applied to the alighting gear of aircraft, and is applied to any needs as guiding mechanism and does in the physical construction of boning out motion of translation.
Claims (5)
1. secondary scalable pilot bar of whole ball spline, it is characterized in that: comprise rubber bush (1), castellated shaft connecting rod (2), jump ring (3), O RunddichtringO (4), ball (5), ball retainer (6), hub splines connecting rod (7), dust boot (8), described castellated shaft connecting rod (2) is provided with raceway outside some of circumferential well-distributeds, and the raceway cross-sectional plane is circular arc type; Described hub splines connecting rod (7) be provided with around circumferential well-distributed, with the interior raceway of outer raceway equal number and shape, and interior raceway and outer raceway satisfy corresponding matching relationship; Described ball retainer (6) is tubular, is provided with around circumferential well-distributed ball mounting hole, forms integral type ball spline pair with castellated shaft connecting rod (2) and hub splines connecting rod (7) assembling respectively after ball (5) assembles with ball retainer (6).
2. the secondary scalable pilot bar of whole ball spline according to claim 1, it is characterized in that: described two O RunddichtringOs (4) are installed in the outside of hub splines connecting rod (7) side by side.
3. the secondary scalable pilot bar of whole ball spline according to claim 1, it is characterized in that: ball (5) skids off the jump ring (3) that drops when being provided with to prevent work on the described ball retainer (6).
4. the secondary scalable pilot bar of whole ball spline according to claim 1, it is characterized in that: described dust boot (8) two ends are installed in respectively on castellated shaft connecting rod (2) and the hub splines connecting rod (7).
5. the secondary scalable pilot bar of whole ball spline according to claim 1, it is characterized in that: a connection end of described hub splines connecting rod (7) is provided with pin-and-hole, and connects assembling by rubber bush (1) and bolt with vehicle body (10); (2) connection ends of described castellated shaft connecting rod are provided with pin-and-hole, and connect assembling by rubber bush (1) and bolt with steering swivel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103748871A CN102941787A (en) | 2012-09-29 | 2012-09-29 | Extension-type guide rod for integral ball spline pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103748871A CN102941787A (en) | 2012-09-29 | 2012-09-29 | Extension-type guide rod for integral ball spline pair |
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| Publication Number | Publication Date |
|---|---|
| CN102941787A true CN102941787A (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103748871A Pending CN102941787A (en) | 2012-09-29 | 2012-09-29 | Extension-type guide rod for integral ball spline pair |
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| CN (1) | CN102941787A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827659A (en) * | 2018-08-29 | 2018-11-16 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat testboard rotation drive structure |
| CN109029891A (en) * | 2018-08-29 | 2018-12-18 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat jolts experimental testing station |
| CN112622550A (en) * | 2020-12-25 | 2021-04-09 | 奇瑞汽车股份有限公司 | Guide structure, vehicle suspension and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4306638A (en) * | 1978-07-14 | 1981-12-22 | General Motors Corporation | Shock absorber for automotive suspension |
| CN102472358A (en) * | 2009-08-05 | 2012-05-23 | 萱场工业株式会社 | Suspension device |
| CN102627061A (en) * | 2012-04-25 | 2012-08-08 | 万向钱潮股份有限公司 | Multi-connecting-rod rectilinear movement hanger bracket adopting ball spline pair |
| CN202827035U (en) * | 2012-09-29 | 2013-03-27 | 万向钱潮股份有限公司 | Telescopic guide rod of integral type ball spline pair |
-
2012
- 2012-09-29 CN CN2012103748871A patent/CN102941787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4306638A (en) * | 1978-07-14 | 1981-12-22 | General Motors Corporation | Shock absorber for automotive suspension |
| CN102472358A (en) * | 2009-08-05 | 2012-05-23 | 萱场工业株式会社 | Suspension device |
| CN102627061A (en) * | 2012-04-25 | 2012-08-08 | 万向钱潮股份有限公司 | Multi-connecting-rod rectilinear movement hanger bracket adopting ball spline pair |
| CN202827035U (en) * | 2012-09-29 | 2013-03-27 | 万向钱潮股份有限公司 | Telescopic guide rod of integral type ball spline pair |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827659A (en) * | 2018-08-29 | 2018-11-16 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat testboard rotation drive structure |
| CN109029891A (en) * | 2018-08-29 | 2018-12-18 | 芜湖瑞泰汽车零部件有限公司 | A kind of seat jolts experimental testing station |
| CN112622550A (en) * | 2020-12-25 | 2021-04-09 | 奇瑞汽车股份有限公司 | Guide structure, vehicle suspension and vehicle |
| CN112622550B (en) * | 2020-12-25 | 2022-08-12 | 奇瑞汽车股份有限公司 | Guide structure, vehicle suspension and vehicle |
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Application publication date: 20130227 |