CN107606015A - A kind of leaf spring bush Assembly - Google Patents
A kind of leaf spring bush Assembly Download PDFInfo
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- CN107606015A CN107606015A CN201710769364.XA CN201710769364A CN107606015A CN 107606015 A CN107606015 A CN 107606015A CN 201710769364 A CN201710769364 A CN 201710769364A CN 107606015 A CN107606015 A CN 107606015A
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- cylinder
- leaf spring
- cylinder body
- central siphon
- bush assembly
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Abstract
The present invention relates to a kind of leaf spring bush Assembly, including two external bushings, two neck bush and a central siphon；Two external bushings are placed on central siphon, and two neck bush are arranged between external bushing and central siphon from the both ends of central siphon respectively；External bushing includes inner cylinder and rubber layer, and rubber layer vulcanizes on the lateral surface of inner cylinder；Rubber layer includes cylinder body, and axially arranged in the side surface of cylinder body has multiple small projections.Leaf spring grasswort end is avoided to interfere with flat spring bracket；Using nonmetal parts, mitigate weight；The magnitude of interference is smaller, and reducing vehicle, leaf spring with respect to the torque of flat spring bracket, improves the ride comfort that vehicle travels in motion；Changed during maintenance conveniently；Eliminate noise during leaf spring motion.
Description
Technical field
The invention belongs to leaf springs of car technical field, particularly relates to a kind of leaf spring bush Assembly.
Background technology
In the guider of suspension system (such as swing arm, back axle, leaf spring), the hinge point being connected with vehicle body is more and more
The connected mode using rubber bushing.Rubber bushing is good with its anti-vibration performance, the advantages that flexible feature and attenuation characteristic,
Turn into critical elements indispensable on automobile.
Suspension swing arm bushing connects together suspension swing arm and vehicle body (or vehicle frame, subframe), when swing arm moves up and down,
Play a part of buffering joint, when suspension receives impact, play cushioning effect, meanwhile, the guiding as automobile suspension system
And force transfer element, vehicle body will be passed in various on wheel while ensure that wheel is moved by certain track.
As people require more and more higher to vehicle riding comfort, the requirement to the characteristic of automobile suspension system is increasingly
Greatly.In order to reduce resistance when swing arm moves up and down, while effective control causes the vibration of vehicle body from road shocks,
Not only to make bush of swing arm that there is larger radial rigidity and axial rigidity to ensure the axial direction of swing arm opposed swing arms axle during design
And lateral position, and the torsional rigidity of bushing is reduced to reduce resistance, there is provided suspension comfortableness, but come for bushing
Say, it is conflicting to increase radial and axial rigidity and reduce torsional rigidity.
In the vehicles such as increasing light truck, commercial car, on the premise of enough bearing requirements are met, vehicle
Comfort property is increasingly pursued in design, thus (most of vehicle still makes in its leaf spring type used rigid axle suspension structure
With such suspension), the connected mode of rubber bushing formula is also very universal.Therefore soft pass of the leaf spring grasswort bushing as a connection
Section, how still to be able to keep long service life in the case where bearing big load, large deformation is an important research topic.
Existing relatively conventional bush of swing arm is typically by metal inner cylinder and metal outer cylinder, and rubber composition between the two,
Three forms one by vulcanizing, and bushing then is pressed into swing arm body, outer tube is combined with swing arm body by interference fit
One.When bush torsional rigidity is larger, comfortableness is deteriorated, while under big windup-degree, produces larger torsional moment, rubber
Inside produces larger shearing force, and bushing life is greatly reduced.
It is as shown in Figure 1 the leaf spring and bush structure of prior art, including leaf spring, metal outer cylinder, rubber layer, metal inner cylinder
And leaf spring grasswort；The bushing of leaf springs of car rigid axle suspension is by metal inner cylinder and metal outer cylinder, and rubber layer between the two
Form, three forms one by vulcanizing, and then bushing is pressed into leaf spring grasswort, makes metal outer cylinder and plate by interference fit
Spring grasswort integrally combines.
Prior art makes metal outer cylinder integrally combine with leaf spring grasswort by interference fit, and the magnitude of interference is small, the pull-off of bushing
Power is easily deviate from regard to small when during vehicle movement by lateral forces, causes leaf spring and flat spring bracket interference and noise,
Conversely, the magnitude of interference is excessive, it is difficult to is pressed；Frictional resistance is big between bushing and bearing pin when leaf spring moves up and down；Bushing is consumable accessory,
It is inconvenient during maintenance.
It is illustrated in figure 2 prior art leaf spring elasticity mixed type bush Assembly, including central siphon, oversheath and inner sheath
Assembly；See prior art literature, leaf spring elasticity mixed type bush Assembly (CN202623834U) and a kind of leaf spring grasswort lining
Set and its installation method (CN106347055A), but each architectural feature is unclear, and ambiguity between physical dimension
Chu, useful product can not be produced, it is impossible to which can guarantee install, and less can guarantee that the reliability and performance of bushing；Leaf spring bushing
Structure snd size change before and after assembly press-in leaf spring grasswort is unclear；The specific structural details for influenceing bushing performance are unclear.
The content of the invention
It is an object of the invention to provide a kind of leaf spring bush Assembly, to solve the leaf spring bushing of prior art easily from leaf spring
The problem of abjection and frictional resistance are big, and the life-span is low.
The present invention is achieved by the following technical solutions：
A kind of leaf spring bush Assembly, including two external bushings, two neck bush and a central siphon；Two external bushing sets
In on the central siphon, two neck bush respectively from the both ends of the central siphon be arranged at the external bushing and the central siphon it
Between；
The external bushing includes inner cylinder and rubber layer, and the rubber layer vulcanizes on the lateral surface of the inner cylinder；
The inner cylinder be provided with axially through breach cylinder tubular construction；Inner surface at the both ends of the inner cylinder
It is provided with the end conical surface；
The rubber layer includes cylinder body, and the internal diameter of the oriented cylinder body is set in one end of the cylinder body
The small circle ring of direction extension；The annulus to be extended radially outwardly along the cylinder body is set in the other end of the cylinder body,
In the side surface of the cylinder body groove is provided with the annulus；
The edge of the side of the small circle ring is provided with a circle conical surface annulus in the annulus；
The length of the cylinder body is more than the length of the inner cylinder；
Axially arranged in the side surface of the cylinder body has multiple small projections.
The central siphon is cylinder tubular construction, and the central siphon both ends protrude from the end face of the corresponding neck bush.
Width=π of the inner cylinder breach × (external diameter of internal diameter-neck bush of inner cylinder)+π × (internal diameter-central siphon of cylinder
External diameter)+2.
The cylinder body is provided with one end of the small circle ring and the distance of the similar inner cylinder end, more than described
The other end of cylinder body and the distance of the similar inner cylinder end.
The small raised section is semicircle.
The neck bush includes cylinder and in the annular portion that extends radially outwardly of the one end of the cylinder along the cylinder；
The projection that a ring cross-section is triangle, raised two tables are provided with the edge of the outer surface of the annular portion
Face is respectively inner conical surface and male cone (strobilus masculinus)；
Inner circle anchor ring is provided with the closely described cylinder of inner surface of the annular portion, and in the inner surface of the annular portion
Edge be provided with inner side the conical surface；
There is a circle end conical surface in the other end inner surface setting of the cylinder；
L-shaped breach is provided with the outer surface of the cylinder and the inner circle anchor ring.
The inboard width of the L-shaped breach is more than the width on the outside of the L-shaped breach.
The length that the L-shaped breach is located on the inner circle anchor ring is more than 1/3rd of the cylinder internal diameter.
The angle of the inner conical surface and the male cone (strobilus masculinus) is more than 120 °.
The beneficial effects of the invention are as follows：
Leaf spring grasswort end is avoided to interfere with flat spring bracket；Using nonmetal parts, mitigate weight；The magnitude of interference is smaller, reduces
Leaf spring with respect to the torque of flat spring bracket, improves the ride comfort that vehicle travels to vehicle in motion；Changed during maintenance conveniently；Eliminate plate
Noise when spring moves.
Brief description of the drawings
Fig. 1 is prior art leaf spring and bush structure；
Fig. 2 is prior art leaf spring elasticity mixed type bush Assembly；
Fig. 3 is schematic structural view of the invention；
Fig. 4 is the front view before present invention press fitting；
Fig. 5 is Fig. 4 A-A sectional views；
Fig. 6 is the schematic diagram before external bushing press fitting；
Fig. 7 is the schematic diagram before inner cylinder vulcanization；
Fig. 8 is the schematic diagram before neck bush press fitting；
Fig. 9 is pressed into after leaf spring grasswort for the present invention and is installed to the schematic diagram on flat spring bracket.
Description of reference numerals
Embodiment
Describe technical scheme in detail by the following examples, following embodiment be only it is exemplary, only
Explanation and illustration technical scheme can be used for, and be not to be construed as the limitation to technical solution of the present invention.
The application provides a kind of leaf spring bush Assembly, as shown in Fig. 3 to Fig. 9, including two external bushings, two neck bush and
One central siphon；Two external bushings are placed on central siphon, two neck bush respectively from the both ends of central siphon be arranged at external bushing and central siphon it
Between.Meanwhile the design of leaf spring bush Assembly also relates to leaf spring 4, bearing pin 5, flat spring bracket 6 etc., external bushing 1, neck bush 2, axle
Pipe 3 is single parts, and it is overall to form One function after being pressed into leaf spring 4.
There is a leaf spring grasswort 41 end of leaf spring 4, and the width of leaf spring grasswort 41 is L1, internal diameter D4, as shown in Figure 9.
External bushing includes inner cylinder and rubber layer, and rubber layer vulcanizes on the lateral surface of inner cylinder.
Inner cylinder be provided with axially through breach cylinder tubular construction；Inner surface at the both ends of inner cylinder is provided with
The end conical surface.
Rubber layer includes cylinder body, extends in the internal diameter direction of the oriented cylinder body of one end of cylinder body setting small
Annulus；The annulus to be extended radially outwardly along cylinder body is set in the other end of cylinder body, it is near in the side surface of cylinder body
Groove is provided with annulus.
The edge of the side of small circle ring is provided with a circle conical surface annulus in annulus.
The length of cylinder body is more than the length of inner cylinder.
Axially arranged in the side surface of cylinder body has multiple small projections.
Central siphon 3 is metal material, and inside and outside is the concentric face of cylinder, and there is chamfering at both ends, are easily installed, external diameter D1, axle
The height that pipe 3 protrudes the cylindrical anchor ring 21 of neck bush 2 is H, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 9.
External bushing 1 is vulcanized by inner cylinder 11 and rubber layer 12 to be formed, and inner cylinder 11 is located at the inner side of rubber layer 12, internal diameter D2, interior
The cylinder body 123 of the relative inner side of rubber layer 12 of cylinder 11, one end retraction c1, other end retraction c2, the length of cylinder body 123 are
A2, the length of inner cylinder 11 are a2, a2=a1-c1-c2, c1 ＞ c2, as shown in Fig. 3, Fig. 5, Fig. 6, Fig. 7 and Fig. 9.
Inner cylinder 11 is high intensity, the nonmetallic materials of antiwear heat resisting, and inside and outside is concentric circles cylinder, thickness t2, and length is
A2, internal diameter D2, including breach 111, the end conical surface 112；The width of breach 111 is c3, c3=π × (D2-d2)+π × (d1-
D1)+2, wherein D1 are the external diameter of central siphon 3, and d2 is the external diameter of neck bush 2, the contraction for the diameter of inner cylinder 11；The end conical surface 112
Section and center angle be 15 ° or so, for reducing the interference of end rigidity and neck bush 2, such as Fig. 3, Fig. 5, Fig. 6, Fig. 7 and
Shown in Fig. 9.
Have in rubber layer 12 small circle ring 121, fillet 122, cylinder body 123, small by raised 124, groove 125, annulus 126,
Conical surface annulus 127；Small circle ring 121 wraps up the end of inner cylinder 11 part, thickness c1；Cylinder body 123 is the master of rubber layer 12
Body, thickness t1, length a1, external diameter d3, d3 ＞ D4 before bushing press-in；The surrounding of cylinder body 123 is uniform a plurality of small convex
124 are played, small raised 124 outer surface is the face of cylinder, and the height that the face of cylinder is higher by cylinder body 123 is 1~1.5mm, length a3,
A3 is between the 1/2~2/3 of the length a2 of cylinder body 123；The width a4 of groove 125 is 2~3mm, core diameter d4, d4
＜ d3, the flowing of rubber layer 12 when purposes is installation, interference when avoiding the internal injury of rubber layer 12 and installing with leaf spring grasswort；Annulus
126 thickness is t3, and for buffering the effect of side force, the inner side of annulus 126 to the distance of small circle ring 121 is a0；Conical surface annulus
127 thickness and effect are identical with annulus 126, as shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 7.
With cylinder inner support in inner cylinder 11, making the width c3 of breach 111 it is first π × (D2-d2) during the manufacture of external bushing 1
+ π × (d1-D1)+2, then carry out rubber layer 12 and be molded, rubber fills up the breach 111 of inner cylinder 11, finally by inner cylinder 11 and rubber
Layer 12 sulfides, and the endoporus of external bushing 1 is slightly ob-round, D2 ＞ d2, as shown in Fig. 3, Fig. 5, Fig. 6 and Fig. 7.
Neck bush 2 is nonmetallic materials, and the performance such as mechanical strength, wear-resisting, lubrication is better than metal material, such as modification of nylon
PA66 etc., above there are cylindrical anchor ring 21, inner conical surface 22, male cone (strobilus masculinus) 23, the inner side conical surface 24, inner circle anchor ring 25, L-shaped breach 26, cylinder
27th, end conical surface 28 etc..Cylinder 27 is the main body of neck bush 2, and inside and outside is concentric circles cylinder, thickness t3, internal diameter d1, bushing
D1 ＞ D1 before press-in；Big end is made up of cylindrical anchor ring 21, inner conical surface 22, male cone (strobilus masculinus) 23, the inner side conical surface 24, inner circle anchor ring 25 etc.,
For buffering the effect of side force, a diameter of d5 of cylindrical anchor ring 21, a diameter of d6 of inner circle anchor ring 25, cylindrical anchor ring 21 is in
The thickness of anchor ring 25 is t4；The section angle of the inner side conical surface 24 and inner circle anchor ring 25 is 4 °, after being installed for the present invention all the time
Keep the flexible contact with flat spring bracket 6；The angle of inner conical surface 22 and male cone (strobilus masculinus) 23 is more than 120 °, inner conical surface 22 and male cone (strobilus masculinus) 23
Intersection enclosed for point, point circle to the height of cylindrical anchor ring 21 be h, a diameter of d7, anti-for sealing together with the inner side conical surface 24
Only dust and water etc. enter in bushing, d7 ＞ d6 ＞ d5 ＞ d3；L-shaped breach 26 inboard width m1, outside width m2, m1 ＞ m2, π
× (d1-D1)≤m1 ＜ π × (d1-D1)+0.5, radical length is more than the 1/3 of the internal diameter d1 of cylinder 27, for the internal diameter d1 of cylinder 27
Contraction, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 8 and Fig. 9.
T1 ＞ t2 ＞ t3, t3 >=t4, D2 ＞ d2, d3 the ＞ D4 before the press fitting of leaf spring bush Assembly, as shown in Figures 3 to 8.
Mounted two external bushings, 1, two neck bush 2 and a central siphon 3 are pressed into leaf spring 4 together with special purpose device
In leaf spring grasswort 41, the internal diameter D4 of the ＞ leaf springs 41 of outside diameter d 3 of the rubber layer 12 of external bushing 1, plus the small projection in rubber layer 12
124, after leaf spring bush Assembly is pressed into leaf spring 41, due to the extruding of rubber layer 12, the width c3 of the breach 111 of inner cylinder 11
2mm is changed into from (D2-d2)+π × (d1-D1)+2, and extrudes neck bush 2mm, makes the width m1 of the L-shaped breach 26 on neck bush 2
Change within 0.5mm, neck bush 2 is close to central siphon 3, D2=d2 is changed into from D2 ＞ d2, d3=D4, leaf spring lining are changed into from d3 ＞ D4
The function of transporting, assemble that set assembly is changed into being anchored in leaf spring grasswort 41 is overall, as shown in Figure 9.
Meanwhile the height for being pressed the cylindrical anchor ring 21 that rear axle tube 3 protrudes neck bush 2 is H, point circle height h ＞ H, leaf spring 4
Width L1 2 × a0 of ＞, two neck bush 2 are made to keep certain distance in leaf spring grasswort 41, as shown in Figure 9.
Leaf spring 4 is fixed in flat spring bracket 6 with bearing pin 5 and nut again, both ends of the surface and the inner side of flat spring bracket 6 of central siphon 3
Fitting, due to h ＞ H, bush inside sealing, prevent dust and water etc. from entering in bushing, as shown in Figure 9.
Operation principle
1st, a bushing in leaf spring grasswort is changed to two short bushings, be pressed into from leaf spring grasswort both ends, the big end of bushing has slow
Annulus is rushed, leaf spring grasswort end is separated with flat spring bracket, prevents that side force makes leaf spring grasswort end and plate when vehicle travels
Spring bracket is interfered and friction.
2nd, the structure snd size relation established between neck bush, external bushing, central siphon, leaf spring grasswort, flat spring bracket, Yi Jian
The front and rear change in size relation of dress, makes leaf spring bushing easily install, and has good reliability after installing.
3rd, metal outer cylinder is not used, rubber layer directly contacts with leaf spring grasswort, significantly mitigates the weight of bushing, and reduce and shake
Dynamic and noise.
4th, due to rational physical dimension, bushing need not use very big power press-in leaf spring grasswort, and the magnitude of interference is smaller, reduces
Leaf spring with respect to the torque of flat spring bracket, improves the ride comfort that vehicle travels to vehicle in motion.
5th, due to rational physical dimension, bushing pressing-in force is small, and pull-out force is also small, and bushing is consumable accessory, changes during maintenance
It is convenient.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And deformation, the scope of the present invention are extremely equally limited by appended claims.
Claims (9)
1. a kind of leaf spring bush Assembly, it is characterised in that including two external bushings, two neck bush and a central siphon；Two institutes
State external bushing to be placed on the central siphon, two neck bush are arranged at the external bushing and institute from the both ends of the central siphon respectively
State between central siphon；
The external bushing includes inner cylinder and rubber layer, and the rubber layer vulcanizes on the lateral surface of the inner cylinder；
The inner cylinder be provided with axially through breach cylinder tubular construction；Inner surface at the both ends of the inner cylinder is all provided with
It is equipped with the end conical surface；
The rubber layer includes cylinder body, and the internal diameter direction of the oriented cylinder body is set in one end of the cylinder body
The small circle ring of extension；The annulus to be extended radially outwardly along the cylinder body is set in the other end of the cylinder body, in institute
The side surface for stating cylinder body is provided with groove at the annulus；
The edge of the side of the small circle ring is provided with a circle conical surface annulus in the annulus；
The length of the cylinder body is more than the length of the inner cylinder；
Axially arranged in the side surface of the cylinder body has multiple small projections.
2. leaf spring bush Assembly according to claim 1, it is characterised in that the central siphon is cylinder tubular construction, the axle
Pipe both ends protrude from the end face of the corresponding neck bush.
3. leaf spring bush Assembly according to claim 1, it is characterised in that width=π × (inner cylinder of the inner cylinder breach
Internal diameter-neck bush external diameter)+π × (external diameter of internal diameter-central siphon of cylinder)+2.
4. leaf spring bush Assembly according to claim 1, it is characterised in that the cylinder body is provided with the small circle ring
One end and the similar inner cylinder end distance, more than the other end and the similar inner cylinder end of the cylinder body
Distance.
5. leaf spring bush Assembly according to claim 1, it is characterised in that the small raised section is semicircle.
6. leaf spring bush Assembly according to claim 1, it is characterised in that the neck bush includes cylinder and in the cylinder
The annular portion that extends radially outwardly of the one end of body along the cylinder；
The projection that a ring cross-section is triangle, raised two surfaces point are provided with the edge of the outer surface of the annular portion
Wei not inner conical surface and male cone (strobilus masculinus)；
Inner circle anchor ring, and the side of the inner surface in the annular portion are provided with the closely described cylinder of inner surface of the annular portion
Place is provided with the inner side conical surface；
There is a circle end conical surface in the other end inner surface setting of the cylinder；
L-shaped breach is provided with the outer surface of the cylinder and the inner circle anchor ring.
7. leaf spring bush Assembly according to claim 6, it is characterised in that the inboard width of the L-shaped breach is more than institute
State the width on the outside of L-shaped breach.
8. leaf spring bush Assembly according to claim 6, it is characterised in that the L-shaped breach is located at the inner circle anchor ring
On length be more than the cylinder internal diameter 1/3rd.
9. leaf spring bush Assembly according to claim 6, it is characterised in that the angle of the inner conical surface and the male cone (strobilus masculinus)
More than 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710769364.XA CN107606015A (en) | 2017-08-31 | 2017-08-31 | A kind of leaf spring bush Assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710769364.XA CN107606015A (en) | 2017-08-31 | 2017-08-31 | A kind of leaf spring bush Assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107606015A true CN107606015A (en) | 2018-01-19 |
Family
ID=61056865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710769364.XA Pending CN107606015A (en) | 2017-08-31 | 2017-08-31 | A kind of leaf spring bush Assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN107606015A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674109A (en) * | 2018-06-07 | 2018-10-19 | 东风(武汉)实业有限公司 | The Multifunctional triangle arm assembly of high intensity |
| CN109094315A (en) * | 2018-08-16 | 2018-12-28 | 安徽奥丰汽车配件有限公司 | A kind of automobile chassis combination rubber bushing |
| CN111649085A (en) * | 2020-06-28 | 2020-09-11 | 天津东丰和美新材料科技有限公司 | Novel three-dimensional shear type shock absorber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0493731A1 (en) * | 1990-12-29 | 1992-07-08 | Jörn GmbH | Flexible bearing |
| JP2006076410A (en) * | 2004-09-08 | 2006-03-23 | Mitsubishi Fuso Truck & Bus Corp | Suspension structure of vehicle equipped with multi-layer bushing |
| CN202623834U (en) * | 2012-03-31 | 2012-12-26 | 南京依维柯汽车有限公司 | Elastic hybrid lining assembly of steel plate spring |
| CN203331768U (en) * | 2013-06-07 | 2013-12-11 | 宁国市瑞普密封件有限公司 | Automotive suspension plate spring rubber bushing |
| CN106347055A (en) * | 2016-11-04 | 2017-01-25 | 安徽江淮汽车股份有限公司 | Plate spring eye bushing and installation method thereof |
-
2017
- 2017-08-31 CN CN201710769364.XA patent/CN107606015A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0493731A1 (en) * | 1990-12-29 | 1992-07-08 | Jörn GmbH | Flexible bearing |
| JP2006076410A (en) * | 2004-09-08 | 2006-03-23 | Mitsubishi Fuso Truck & Bus Corp | Suspension structure of vehicle equipped with multi-layer bushing |
| CN202623834U (en) * | 2012-03-31 | 2012-12-26 | 南京依维柯汽车有限公司 | Elastic hybrid lining assembly of steel plate spring |
| CN203331768U (en) * | 2013-06-07 | 2013-12-11 | 宁国市瑞普密封件有限公司 | Automotive suspension plate spring rubber bushing |
| CN106347055A (en) * | 2016-11-04 | 2017-01-25 | 安徽江淮汽车股份有限公司 | Plate spring eye bushing and installation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674109A (en) * | 2018-06-07 | 2018-10-19 | 东风(武汉)实业有限公司 | The Multifunctional triangle arm assembly of high intensity |
| CN108674109B (en) * | 2018-06-07 | 2020-02-18 | 东风(武汉)实业有限公司 | High-strength multifunctional triangular arm assembly |
| CN109094315A (en) * | 2018-08-16 | 2018-12-28 | 安徽奥丰汽车配件有限公司 | A kind of automobile chassis combination rubber bushing |
| CN111649085A (en) * | 2020-06-28 | 2020-09-11 | 天津东丰和美新材料科技有限公司 | Novel three-dimensional shear type shock absorber |
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Application publication date: 20180119 |
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| RJ01 | Rejection of invention patent application after publication |