CN101423069A - Suspension device - Google Patents
Suspension device Download PDFInfo
- Publication number
- CN101423069A CN101423069A CNA200810186931XA CN200810186931A CN101423069A CN 101423069 A CN101423069 A CN 101423069A CN A200810186931X A CNA200810186931X A CN A200810186931XA CN 200810186931 A CN200810186931 A CN 200810186931A CN 101423069 A CN101423069 A CN 101423069A
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- Prior art keywords
- bolt
- underarm
- connection part
- steering swivel
- load
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Abstract
The present invention relates to a suspension device, including a knuckle, formed so that the front and rear of the lower arm supporting bracket are fastened by the front and rear bolts to a front and a rear fastening part provided in the lower part of the knuckle body; and a single lower arm, which width direction inner end is connected to a vehicle body, and width direction outer end is connected to the lower arm supporting bracket through a pivot support; the lower arm and a pivot supporting connection part of the lower arm supporting bracket are located in a straight line for connecting the front and the rear bolts when viewed vertically, and the straight line is in toein conventionally, and the toein angle is decreased when the load towards the vehicle body rear playing action to the knuckle. In this way, when the vehicle wheel passes through convex pavement or brakes, and the load rearward of the vehicle plays action on the knuckle, the moment of the load torsion knuckle will be reduced, so that the load on the bolt may be reduced and the durability may be improved.
Description
The present invention is that application number is 200510053708.4, and the applying date is on March 10th, 2005, and denomination of invention is divided an application for the Chinese invention patent application of " draft hitch ".
Technical field
The present invention relates to a kind of draft hitch, it possesses: steering swivel, and its bolt that constitutes by front and back is connected in front side connection part and rear side connection part with the front and rear part of underarm Support bracket, and described connection part is arranged on the bottom of steering swivel main body; And underarm, its overall width direction the inner is connected in vehicle body, and overall width direction outer end is connected in the underarm Support bracket.
Background technology
Fig. 7 and Fig. 8 represent known draft hitch, its steering swivel 01 is incorporated into underarm Support bracket 03 by two bolts 04,05 lower end of steering swivel main body 02, the overall width direction outer end of upper arm 06 is connected in the upper end of steering swivel main body 01 by ball-joint 08, and the overall width direction outer end of underarm 07 is connected in underarm Support bracket 03 by ball-joint 09.Form outstanding a pair of connection part 02a, 02b downwards in the front and back end of steering swivel main body 02 bottom, the rear and front end of underarm Support bracket 03 is connected in the conjunction plane of these connection parts 02a, 02b by bolt 04,05.
But when the vehicle at high speed was turned, owing to following the centnifugal force of turning and producing, vehicle body tilted to the turn direction outside, and the turning foreign steamer will be subjected to bump (bump), and the inside turning transverse force of turn direction will act on the earth point of turning foreign steamer.As shown in Figure 8, the steering swivel 01 of known draft hitch, the straight line L of the conjunction plane of connection part 02a, 02b before and after connecting is under common state (when the acceleration/accel of 1G acts on above-below direction), tilt to the front lower place, and when wheel was subjected to clashing into, above-mentioned straight line L can further strengthen the inclination to the front lower place, and moved to L ' position, wherein, connection part 02a, the 02b of front and back are used for underarm Support bracket 03 is connected in steering swivel main body 02.Its result, to have following problem: the bolt 04,05 of front and back increases apart from the ground-surface diff-H, do the time spent in above-mentioned turning transverse force generation, owing to reason illustrated among the embodiment, the load that acts on rear side bolt 05 will be greater than the load that acts on front side bolt 04, and when front and back bolt 04,05 diameter that uses is identical, then be subjected to will reducing than the durability of the rear side bolt 05 of heavy load.
In addition, remained following tendency: above-mentioned known draft hitch, because when the load F towards the vehicle body rear does not act on wheel W, the straight line A that connects two bolts 04,05 is arranged in the vehicle body fore-and-aft direction, described two bolts 04,05 are used for underarm Support bracket 03 is connected in the lower end of steering swivel main body 02, so when wheel W crosses the concavo-convex or wheel W braking of ground-surface, do the time spent towards the load F at vehicle body rear generation, above-mentioned straight line A and wheel W will be simultaneously to A ' position posterior cords.
Its result, also there are the following problems: front side bolt 04 can be offset to the overall width direction outside from the straight line A along the vehicle body fore-and-aft direction, and rear side bolt 05 can be offset to overall width direction inboard from the straight line A along the vehicle body fore-and-aft direction, therefore, rely on above-mentioned load F, to act on connection part 02a, the 02b of steering swivel main body 02 as the bigger moment of moment arm with above-mentioned side-play amount, therefore the methods such as bolt 04,05 chap before and after must taking to make can become the major cause that weight increases like this to solve.
Summary of the invention
The present invention In view of the foregoing proposes, and its purpose is, makes the load uniformization or the reduction of bolt before and after being applied to, and wherein, above-mentioned front and back bolt is connected in the underarm Support bracket bottom of steering swivel main body.
For achieving the above object, advise following draft hitch, according to the 1st aspect of the present invention, this draft hitch possesses: steering swivel, its bolt that constitutes by front and back is connected in front side connection part and rear side connection part with the front and rear part of underarm Support bracket, and described connection part is arranged on the bottom of steering swivel main body; And underarm, its overall width direction the inner is connected in vehicle body, and overall width direction outer end is connected in the underarm Support bracket; The angle of the straight line of the conjunction plane of described connection front side connection part and the conjunction plane of rear side connection part can be along with the bump (bump) of steering swivel and resilience (bound) and is changed; Wherein, along with steering swivel is clashed into from common position, the angle of above-mentioned straight line will be near level.
According to above-mentioned formation, if steering swivel is clashed into from common position, the angle of straight line of conjunction plane that then connects front side connection part and rear side connection part is near level, above-mentioned steering swivel is the front and rear part of underarm Support bracket to be connected in the front side connection part and the rear side connection part constitutes by the front and back bolt, and above-mentioned connection part is arranged on the bottom of steering swivel main body.Therefore, the centnifugal force that relies on escort vehicle to be turned and produce, vehicle body will tilt to the turn direction outside, the turning foreign steamer can be clashed into, and the inside turning transverse force of turn direction will act on the earth point of turning foreign steamer, when the compressive load of the underarm of feasible thus this turning transverse force of opposing is input to the underarm Support bracket, from the road surface to the front side connection part and the range difference till the conjunction plane of rear side connection part will reduce, thereby it is poor to reduce the load that the front and back bolt that is disposed at is herein applied, and makes the durability uniformization.
In addition, advise following draft hitch, according to the 2nd aspect of the present invention, this draft hitch possesses: steering swivel, it constitutes by the front and back bolt front and rear part of underarm Support bracket is connected in front side connection part and rear side connection part, and described connection part is arranged on the bottom of steering swivel main body; And the mono-underarm, its overall width direction the inner is connected in vehicle body, and overall width direction outer end is connected in the underarm Support bracket in place's pivotal support; Wherein, described underarm is positioned at when overlooking on the straight line that is connected front side bolt and rear side bolt with the pivotal support connecting portion of described underarm Support bracket, and this straight line is prenex under normal conditions, and when the load towards the vehicle body rear acts on steering swivel, angle of toein will reduce.
According to above-mentioned formation, do not act on steering swivel generally in load towards the vehicle body rear, the straight line of bolt is prenex state before and after connecting, described front and back bolt is connected in the underarm Support bracket bottom of steering swivel main body, cross the concavo-convex or wheel braking of ground-surface and work as wheel, when the load towards the vehicle body rear acts on steering swivel, because this load, the wheel posterior cord, thus the angle of toein of above-mentioned straight line will reduce.Its result, the front and back bolt will be arranged in the vehicle body fore-and-aft direction, the skew of overall width direction diminishes, thus the moment of reversing steering swivel towards the load at vehicle body rear reduce, thereby can reduce the load that puts on bolt, improve durability.
Foregoing among the present invention, other purpose, feature and advantage are from reference to the accompanying drawings to can be clear and definite the explanation of following preferred embodiment.
Description of drawings
Fig. 1～Fig. 5 represents the 1st embodiment of the present invention, Fig. 1 is the block diagram of two V-arrangement arm type suspension devices of left rear wheel, Fig. 2 be among Fig. 12 directions to view, Fig. 3 is that the amplification of 3 directions among Fig. 1 is to view, Fig. 4 is the main portion amplification profile of Fig. 3, Fig. 5 be the turning transverse force be input to through the bump wheel the time Action Specification figure.
Fig. 6 be the 2nd embodiment of the present invention related, corresponding to the figure of above-mentioned Fig. 4.
Fig. 7 and Fig. 8 represent the example of known technology, and Fig. 7 is the figure corresponding to above-mentioned Fig. 2, Fig. 8 be among Fig. 78 directions to view.
The specific embodiment
Below, according to Fig. 1～Fig. 5 the 1st embodiment of the present invention is described.
As Fig. 1～shown in Figure 3, two V-arrangement arm type suspension device S possess steering swivel 13, and this steering swivel 13 is supported on the vehicle body by upper arm 11 and underarm 12.The underarm Support bracket 15 that steering swivel 13 is made by light alloy forging steering swivel main body of making 14 and the ferrous material that is connected in its underpart constitutes.Steering swivel main body 14 possesses: the 14a of axle support portion, and the axletree of support wheel W, and it can be rotated freely; And upper arm support portion 14b, it extends upward from the 14a of axle support portion, by ball-joint 16 with the overall width direction outer end pivotal support of upper arm 11 in the upper end of upper arm support portion 14b.
Can be clear from Fig. 4, a pair of connection part 14c, the 14d in front and back gives prominence to downwards from the front and back end, axle support portion 14a bottom of steering swivel main body 14, is formed with the upwards recess 14e of depression between two connection part 14c, the 14d.Underarm Support bracket 15 possesses: installation portion 15a, the 15b of front and back end; The underarm support portion 15c of centre; And connecting portion 15d, the 15e of the pair of angled of the 15a of connection portion, 15b and underarm support portion 15c, the 15a of installed in front portion is fixed in the conjunction plane of front side connection part 14c by bolt 17 and nut 18, and rear side installation portion 15b is fixed in the conjunction plane of rear side connection part 14d by bolt 19.The underarm support portion 15c of underarm Support bracket 15 is positioned at the position lower than installation portion 15a, 15b, the overall width direction outer end of underarm 12 is disposed at space 20, and this space 20 is formed between the underarm support portion 15c of the recess 14e of steering swivel main body 14 and underarm Support bracket 15.
The overall width direction outer end pivotal support of underarm 12 is possessed ball end 22 in the ball-joint 21 of underarm Support bracket 15, and this ball end 22 is by constituting with the lower part: by spherical top 22a; With the cone shape axial region 22b of top 22a bonded assembly; And with axial region 22b bonded assembly external thread part 22c.The axial region 22b of ball end 22 is penetrating mounting holes 15f from top to bottom, and fixes by nut 23 being screwed on the external thread part 22c outstanding downwards from underarm support portion 15c, and described mounting hole 15f is arranged at the underarm support portion 15c of underarm Support bracket 15.Also have, ball-joint 21 possesses the shell 12a of the cup-shaped that is arranged at underarm 12 ends.Be contained in the inner peripheral surface of shell 12a with the plastic bearing 25 of the top 22a moving contact of ball end 22, and kept by bearing holdere 26, this bearing holdere 26 is being fixed in the mode of the peristome of covering shell 12a.For making dust etc. not invade the top 22a of ball end 22 and the sliding surface of bearing 25, between the underarm support portion 15c of the peristome of shell 12a and underarm Support bracket 15, protective case 27 is installed.
As shown in Figure 4, the suspension geometry structure that is set as follows, that is, under normal conditions, when just the acceleration/accel of 1G acted on above-below direction, the straight line L of the conjunction plane of front and back connection part 14c, the 14d of connection steering swivel main body 14 was in to front lower place bevelled state.In addition, when wheel W struck the top, above-mentioned straight line L simultaneously rises simultaneously became level (with reference to straight line L ').
Work as Ackermann steer angle, because centnifugal force makes vehicle body tilt to the turn direction outside, the turning foreign steamer is pressed on the ground-surface load will play a role, and the foreign steamer of therefore turning can produce relativism ground bump to vehicle body.As shown in Figure 5, in the turning foreign steamer, the inside turning transverse force of overall width direction acts on the earth point of wheel W from the road surface, because turning transverse force, moment M will act on steering swivel 13, but the counter-force FL of the compressing stress of this moment M by acting on underarm 12 and the counter-force FU that acts on the drawing stress of upper arm 11 can cancel out each other.At this moment, along with the conjunction plane from front and back connection part 14c, the 14d of steering swivel main body 14 is more little to the distance A at the center of shaking (approximate centre of wheel W) of the steering swivel 13 that shakes based on moment M, just the distance till the conjunction plane from the road surface to the connection part 14c, the 14d that are measured is big more, the load of bolt 17,19 then becomes big more before and after acting on, and described front and back bolt 17,19 combines steering swivel main body 14 and underarm Support bracket 15.
Therefore, as example according to the illustrated known configurations of Fig. 7 and Fig. 8, when the conjunction plane height of front and back connection part 14c, 14d is unbalance, the load of bolt 17,19 also can be unbalance before and after acting on, so durability becomes inhomogeneous, thereby need take to change the countermeasures such as thickness of these bolts 17,19.
But, in the present embodiment, at Ackermann steer angle, when the wheel W in the turn direction outside produces relative bump for vehicle body, the straight line L that connects the conjunction plane of steering swivel main body 14 front and back connection part 14c, 14d will be close to horizontality from sagging forward state, and therefore the conjunction plane of front and back connection part 14c, 14d can reduce apart from the ground-surface diff-H.Therefore, owing to act on the inside turning transverse force of overall width direction of the earth point of the wheel W outside the turn direction from the road surface, when moment M acts on steering swivel 13, the load of bolt 17,19 is with uniformization before and after acting on, described front and back bolt 17,19 is with steering swivel main body 14 and 15 combinations of underarm Support bracket, and owing to the center of shaking near steering swivel 13, therefore do not need to take countermeasures such as bolt overstriking with being applied with than heavy load, and before and after can preventing to act on than heavy load bolt 17,19 one of them, thereby can improve durability.
In addition, can be clear and definite from Fig. 2, do not act on wheel W generally at load F towards the vehicle body rear, the straight line A of bolt 17,19 is in prenex state before and after connecting, and above-mentioned front and back bolt 17,19 is connected in steering swivel main body 14 with underarm Support bracket 15.That is to say that above-mentioned straight line A is that the vehicle body front side is towards the inboard inclination of overall width direction.Therefore, when wheel W crosses the concavo-convex or wheel W braking of ground-surface, load F towards the vehicle body rear produces and does the time spent, the stub connecting rod of draft hitch S is than the more close overall width direction of the earth point of wheel W inboard, therefore because above-mentioned load, wheel W and steering swivel 13 shake in the posterior cord direction, and the angle of toein of the straight line A of bolt 17,19 constantly reduces (with reference to straight line A ') towards zero before and after connecting.
So, even wheel W crosses the concavo-convex or wheel W braking of ground-surface, when load F backward acts on steering swivel 13, the straight line A of bolt 17,19 also can posterior cord before and after connecting, and therefore bolt 17,19 general alignment in front and back can be less with the torque control of connection part 14c, 14d before and after being put on by above-mentioned load F in the vehicle body front and back, so the load that acts on bolt 17,19 is reduced, improve durability, and can use the less bolt of diameter 17,19, thereby help expendable weight.
Below, according to Fig. 6 the 2nd embodiment of the present invention is described.
In the 1st embodiment, the ball end 22 of ball-joint 21 is fixed in underarm Support bracket 15, and in the 2nd embodiment, the shell 24 of ball-joint 21 is fixed in underarm Support bracket 15.That is, the shell 24 of ball-joint 21 is pressed into mounting hole 15f from top to bottom, and this mounting hole 15f is formed at the underarm support portion 15c of underarm Support bracket 15.The overall width direction outer end of underarm 12 is embedded in from the outstanding downwards ball end 22 of shell 24, and connects by nut 28.
In the 2nd embodiment, the suspension geometry structure that also is set as follows, acceleration/accel at 1G acts on vehicle generally, the straight line L of the conjunction plane of front and back connection part 14c, the 14d of connection steering swivel main body 14 tilts to the front lower place, but when wheel W struck the top, then above-mentioned straight line L simultaneously rises simultaneously became level (with reference to straight line L ').
Also have, do not act on wheel W generally at load F towards the vehicle body rear, the straight line A of bolt 17,19 is in prenex state before and after connecting, when the load F towards the vehicle body rear acts on wheel W, the angle of toein of the straight line A of bolt 17,19 will constantly reduce towards zero before and after connecting, wherein, front and back bolt 17,19 is connected in steering swivel main body 14 with underarm Support bracket 15.
Therefore, according to the 2nd embodiment, also can reach identical action effect with above-mentioned the 1st embodiment.
More than, embodiments of the invention have been described, but the present invention is not limited to the foregoing description, under the situation of in not breaking away from the claim scope, being put down in writing of the present invention, can carry out various design modifications.
For example, though in an embodiment illustration two V-arrangement arm type suspension device S, the present invention also can be applicable to the draft hitch of other arbitrary form.
Also have, the bolt 17 of front side is a thru-bolt among the embodiment, and the bolt 19 of rear side is common bolt, but the kind of bolt can be selected arbitrarily.
Also have, the thickness of front and back bolt 17,19 is identical among the embodiment, but also need not so certain.
Claims (1)
1. draft hitch, this draft hitch possesses: steering swivel, it constitutes by front side bolt and rear side bolt the front and rear part of underarm Support bracket is connected in front side connection part and rear side connection part, and described front side connection part and rear side connection part are arranged on the bottom of steering swivel main body; And the mono-underarm, its overall width direction the inner is connected in vehicle body, and overall width direction outer end is connected in the underarm Support bracket in place's pivotal support; Wherein, the pivotal support connecting portion that is used for this underarm of pivotal support of described underarm and described underarm Support bracket, when overlooking, be positioned on the straight line that connects front side bolt and rear side bolt, and this straight line is prenex under normal conditions, and when the load towards the vehicle body rear acted on steering swivel, angle of toein reduced.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004070580A JP3999753B2 (en) | 2004-03-12 | 2004-03-12 | Suspension device |
| JP200470581 | 2004-03-12 | ||
| JP2004-70581 | 2004-03-12 | ||
| JP2004-70580 | 2004-03-12 | ||
| JP2004070581A JP4053014B2 (en) | 2004-03-12 | 2004-03-12 | Suspension device |
| JP200470580 | 2004-03-12 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100537084A Division CN100457529C (en) | 2004-03-12 | 2005-03-10 | Suspension device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101423069A true CN101423069A (en) | 2009-05-06 |
| CN101423069B CN101423069B (en) | 2011-02-16 |
Family
ID=35081177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810186931XA Expired - Fee Related CN101423069B (en) | 2004-03-12 | 2005-03-10 | Suspension device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3999753B2 (en) |
| CN (1) | CN101423069B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103476665A (en) * | 2011-06-17 | 2013-12-25 | 宝马股份公司 | Independent wheel suspension of an at least slightly steerable rear wheel of a two-track vehicle |
| CN103608199A (en) * | 2011-04-09 | 2014-02-26 | 大众汽车有限公司 | Pivot bearing |
| CN106696621A (en) * | 2017-01-23 | 2017-05-24 | 浙江吉利新能源商用车有限公司 | Macphersan independent suspension assembly |
| CN111448085A (en) * | 2017-12-08 | 2020-07-24 | 五十铃自动车株式会社 | Upper arm structure of suspension device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2872206A (en) * | 1956-09-14 | 1959-02-03 | Gen Motors Corp | Independent dirigible wheel suspension |
| JP3550908B2 (en) * | 1996-10-04 | 2004-08-04 | 日産自動車株式会社 | Front suspension device |
-
2004
- 2004-03-12 JP JP2004070580A patent/JP3999753B2/en not_active Expired - Fee Related
-
2005
- 2005-03-10 CN CN200810186931XA patent/CN101423069B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103608199A (en) * | 2011-04-09 | 2014-02-26 | 大众汽车有限公司 | Pivot bearing |
| CN103608199B (en) * | 2011-04-09 | 2016-09-14 | 大众汽车有限公司 | Swinging mounting |
| CN103476665A (en) * | 2011-06-17 | 2013-12-25 | 宝马股份公司 | Independent wheel suspension of an at least slightly steerable rear wheel of a two-track vehicle |
| CN103476665B (en) * | 2011-06-17 | 2016-07-06 | 宝马股份公司 | The independent suspension of the trailing wheel that can somewhat turn to of double track vehicle |
| CN106696621A (en) * | 2017-01-23 | 2017-05-24 | 浙江吉利新能源商用车有限公司 | Macphersan independent suspension assembly |
| CN111448085A (en) * | 2017-12-08 | 2020-07-24 | 五十铃自动车株式会社 | Upper arm structure of suspension device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005255023A (en) | 2005-09-22 |
| CN101423069B (en) | 2011-02-16 |
| JP3999753B2 (en) | 2007-10-31 |
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