CN110360255A - A kind of rubber bushing suitable for light-duty vehicle subframe - Google Patents
A kind of rubber bushing suitable for light-duty vehicle subframe Download PDFInfo
- Publication number
- CN110360255A CN110360255A CN201910640124.9A CN201910640124A CN110360255A CN 110360255 A CN110360255 A CN 110360255A CN 201910640124 A CN201910640124 A CN 201910640124A CN 110360255 A CN110360255 A CN 110360255A
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- Prior art keywords
- bushing
- rubber
- cylinder
- inner tube
- tube
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/3863—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the rigid sleeves or pin, e.g. of non-circular cross-section
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of rubber bushings suitable for Light-duty Vehicle subframe, specifically include bushing inner tube (1), bushing outer tube (3), high elastic rubber (2) and pressed sheet (4)；Wherein, the bushing inner tube (1) is made of using alloy material and bushing inner tube (1) inner cylinder (11) and outer cylinder (12), the bushing outer tube (3) uses hollow design using engineering plastics and bushing outer tube (3), the high elastic rubber (2) is coated between bushing inner tube (1) and bushing outer tube (3), and the pressed sheet (4) is on the inner cylinder (11).It is designed using bush structure of the invention, under the premise of meeting subframe rubber bushing base requirement, the reduction that loss of weight and cost are carried out to subframe rubber bushing meets current automotive light weight technology, at low cost and high performance requirement, more economy, safety, comfort.
Description
Technical field
The present invention relates to the technical field of structures of automobile rubber bush more particularly to a kind of suitable for Light-duty Vehicle subframe
Rubber bushing.
Background technique
Classified according to motor vehicles classification standard GB/T 15089-1994, light-duty vehicle refers specifically to Maximum total mass and do not surpass
Cross the M1 class, M2 class and N1 class vehicle of 3.5t.Currently, be related to light-duty vehicle in new national standard GB/T15089-2001 has (GA
For according to manufacturer's total mass when highway/cross-country service；): pickup truck: 1.8 tons < GA, 6 tons；Light bus: 3.5 meters < L7
Rice, L is vehicle commander；Light duty cross-country car: GA5 tons；Light-duty dump truck: GA6 tons；Light semi-trailer: GA7.1 tons.In short, light-duty
Automobile need to guarantee that its is light-weight.
Subframe rubber bushing is flexible coupling as what high-end product just used, at present just gradually again to middle and low-end market vehicle
Development；It is used to connect subframe and white body, play fixed subframe, under the conditions of large impact subframe is limited,
Road pavement vibration carries out the effect of damping.Subframe rubber bushing in the prior art is to meet the requirement of light-duty vehicle, expiring
Requirement of the sufficient market for cost then needs to carry out loss of weight to subframe rubber bushing, has it on the premise of ensuring performance
The low advantage of light weight and cost.
Summary of the invention
The purpose of the present invention is to provide a kind of rubber bushing suitable for light-duty vehicle subframe, with it is light-weight,
It is at low cost, the characteristics of meeting rubber bushing multi-direction performance requirement, that is, there is various performance such as vibration damping, buffering, noise reduction, creep.
The purpose of the present invention is achieved through the following technical solutions:
A kind of rubber bushing suitable for light-duty vehicle subframe, which is characterized in that it is by bushing inner tube, bushing outer tube, height
Elastic rubber and pressed sheet composition；Wherein, the bushing inner tube is made of inner cylinder and outer cylinder, the inner circle drum outer wall with
Have certain distance between outer cylinder inner wall and inner cylinder and the central axis of outer cylinder point-blank, the bushing inner tube is using closing
Golden material；The high elastic rubber is coated on the bushing inner tube, and both ends are thin, thick middle, and upper and lower ends respectively have a recess
Angle, upper concave end angle one end be close to be coated on the high elastic rubber of bushing inner tube, the other end is a buffer stopper, lower concave end angle
One end be close to be coated on the high elastic rubber of bushing inner tube, the other end is an intilted rubber block, the rubber block around
Bushing inner tube central axis is uniformly distributed；The bushing outer tube sleeve the high elastic rubber outer wall, be polymorphic structure, inner wall to
Internal projection, it is an inner chamfer that, which there are a small boss, lower end in outer wall upper end, and bushing outer tube middle section is parallel in bushing for one
The cylindrical body of pipe, square hole is uniformly distributed on the cylindrical body, and the bushing outer tube uses engineering plastics；The high elastic rubber
Upper and lower ends are all coated on the bushing outer tube；The pressed sheet is stepped, among it is short, both ends are high, both ends be it is arc-shaped
Straight panel, it is intermediate be cydariform straight panel, be a small cylinder straight down, its outer wall at cydariform straight panel center than the inner circle
Cylinder inner wall is small, central shaft is conllinear with the bushing inner tube central axis, and thickness is equal the pressed sheet everywhere；The pressed sheet
It is mounted on the inner cylinder upper end, do not contact with the buffer stopper.
Further, the alloy material of the bushing inner tube concretely aluminium alloy；The engineering plastics of the bushing outer tube have
Body can be high-strength glass fibre.
Under normal conditions, it reduces auto parts and components weight and guarantees that its performance is conflicting.Reduce subframe rubber
The weight of bushing need to select light-weight material or cut off to a part of material of components, but select light material or excision
Material will lead to subframe rubber bushing in the case where bearing large impact or pressure condition, produce fracture or the case where bushing fails.It adopts
Guarantee rubber bushing tool in the case where subframe rubber bushing is effectively reduced with structure design and material selection of the invention
There is various function such as vibration damping, buffering, noise reduction, creep, meanwhile, the fracture and failure of rubber bushing are prevented, by safety, comfortably
Property and economy are preferably combined together.
Further, the inner cylinder and the thickness of outer cylinder can be 1.2mm-1.3mm, and distance can be 3.1mm-
3.3mm；The bushing inner tube height can be 65.9mm-66.2mm.
Further, the upper concave end pull degree can be 10mm-10.5mm, and lower concave end pull degree can be 8.7mm-
9.2mm；The buffer stopper height can be 2.9 ± 0.1mm(relative to bushing inner tube the top)；The rubber block height can be
8.5mm-8.7mm(topmost relative to bushing outer tube).
Further, the bushing outer tube total height can be able to be for 51.5 ± 0.1mm, the in-between cylindrical body outer wall diameter
φ71±0.3mm；The small boss height can be that the distance of 2.5 ± 0.1mm, its outermost end away from the cylindrical body outer wall can be
4.5±0.1mm；The inner chamfer angle is 15 °.
Rubber bushing in existing product, high elastic rubber will lead to rubber full of bushing inner tube and bushing outer tube in this way
When receiving extruding force, there is expendable deformation and even cracks bushing in high elastic rubber；Simultaneously as subframe rubber serves as a contrast
Set is used for auxiliary connection vehicle frame and white body, and in the process of moving, bushing inner tube and bushing outer tube may be with subframe or white bodies
Phase mutual friction generates mechanical abnormal sound, and accelerates the aging of rubber bushing.It is designed, is effectively prevented using structure of the invention
There is expendable deformation or cracking in high elastic rubber, avoids the generation of mechanical abnormal sound, it is ensured that subframe rubber lining uses
Safety, comfort and economy.
Further, the square hole is evenly distributed on bushing outer tube around the central axis of bushing inner tube, square hole bottom away from
Being equidistant of bushing outer tube wall can be 2.4mm-2.6mm.
Further, the pressed sheet total height (height including small cylinder) can be 13.9 ± 0.1mm, the small-sized circle
Cylinder height can be 5.5 ± 0.1mm, and small cylinder inner wall width can be 12.5mm-12.7mm；The punching press plate thickness can be
2.5mm；Pressed sheet total length can be 80 ± 0.5mm.
Further, the arc-shaped straight panel and the cydariform straight panel combine circle by two of radius 5mm and radius 7.5mm
Arc is connected, and wherein the circular arc of radius 5mm is connected with arc-shaped straight panel described in both ends respectively, the circular arc of radius 7.5mm and the drum
Shape straight panel is connected；The arc-shaped straight panel of the punching press board ends is 3mm away from the distance of the buffer stopper.
The present invention has the following technical effect that:
Bushing outer tube of the invention substitutes metal or alloy material in the prior art, bushing inner tube and bushing using engineering plastics
Outer tube into material appropriate cut down, using reasonable structure design, it is ensured that the weight saving of subframe rubber bushing, meet it is light-duty
The requirement of automobile, while the multiplicity such as have the function of vibration damping, buffering, noise reduction, creep.Meanwhile being designed using structure of the invention, it protects
Expendable deformation or cracking will not occur under large impact for card high elastic rubber, it is ensured that the functionality of subframe rubber bushing
Complete and vehicle security.
Detailed description of the invention
Fig. 1 is the cross-sectional view for being suitable for the rubber bushing of light-duty vehicle subframe in the embodiment of the present invention.
Fig. 2 is the cross-sectional view of bushing inner tube, bushing outer tube and high elastic rubber composed structure in the embodiment of the present invention.
Fig. 3 is the schematic diagram of pressed sheet in the embodiment of the present invention；Wherein, figure (a) is pressed sheet cross-sectional view, and figure (b) is punching
Pressing plate top view.
Side view in Fig. 4 embodiment of the present invention suitable for the rubber bushing of light-duty vehicle subframe.
Wherein, 1, bushing inner tube；2, high elastic rubber；3, bushing outer tube；4, pressed sheet；11, inner cylinder；12, outer cylinder；
21, upper concave end angle；22, lower concave end angle；23, buffer stopper；24, rubber block；31, small boss；32, inner chamfer；33, cylinder
Body；34, square hole；41, arc-shaped straight panel；42, cydariform straight panel；43, small cylinder.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.
A kind of rubber bushing suitable for light-duty vehicle subframe, which is characterized in that as shown in Figs 1-4, it is by bushing
Inner tube 1, bushing outer tube 3, high elastic rubber 2 and pressed sheet 4 form；Wherein, bushing inner tube 1 is by inner cylinder 11 and outer cylinder 12
It forms, has certain distance between 12 inner wall of 11 outer wall of inner cylinder and outer cylinder and inner cylinder 11 and 12 central axis of outer cylinder are straight at one
On line, the thickness of inner cylinder 11 and outer cylinder 12 be 1.2mm-1.3mm, they the distance between for 3.1mm-3.3mm；Bushing
Inner tube 1 uses alloy material, concretely aluminium alloy, and 1 height of bushing inner tube is 65.9mm-66.2mm.
High elastic rubber 2 is coated on bushing inner tube 1, and both ends are thin, thick middle, and upper and lower ends respectively have a recess angle.On
It is a buffer stopper 23 that 21 one end of concave end angle, which is close to high elastic rubber 2, the other end of bushing inner tube 1 is coated on,；Upper concave end
21 depth of angle can be 10mm-10.5mm, buffer stopper 23 highly can for 2.9 ± 0.1mm(relative to bushing inner tube 1 topmost), use
In to rubber bushing progress bumper and absorbing shock.22 one end of lower concave end angle be close to be coated on bushing inner tube 1 high elastic rubber 2,
The other end is an intilted rubber block 24；22 depth of lower concave end angle can be 8.7mm-9.2mm, and rubber block 24 highly can be
8.5mm-8.7mm(relative to bushing outer tube 3 topmost), for the effect of noise reduction buffering.The rubber block 24 is around bushing inner tube 1
Central axis is uniformly distributed, as shown in Figure 4.
3 sets of bushing outer tube in 2 outer wall of high elastic rubber, be polymorphic structure, 3 total height of bushing outer tube is 51.5 ± 0.1mm.
3 inner wall of bushing outer tube is inwardly protruding, and it is an inner chamfer 32,3 middle section of bushing outer tube that, which there are a small boss 31, lower end in outer wall upper end,
The cylindrical body 33 for being parallel to bushing inner tube for one；Wherein, 33 outer diameter of cylindrical body is 71 ± 0.3mm of φ, 31 height of small boss
It can be the distance of 2.5 ± 0.1mm, its outermost end away from 33 outer wall of cylindrical body be 4.5 ± 0.1mm, 32 angle of inner chamfer is 15 °.Circle
Square hole 34 is uniformly distributed on cylinder 33, square hole 34 is evenly distributed on bushing outer tube 3 around the central axis of bushing inner tube 1 and side
Shape hole bottom away from being equidistant of 3 inner wall of bushing outer tube, for 2.4mm-2.6mm；As shown in Fig. 2 and Fig. 4, the embodiment of the present invention
The a length of 23mm of square hole 34, a height of 8.5mm of middle selection, at a distance of 3.5mm between upper and lower two square holes 34, same vertical setting of types is uniform
Distribution 3.Bushing outer tube 3 uses engineering plastics, can be high-strength glass fibre；2 upper and lower ends of high elastic rubber are all coated on lining
It covers outer tube 3, resilient protection is carried out to bushing outer tube 3.
Pressed sheet 4 is stepped, among it is short, both ends are high, total height (height including small cylinder 43) be 13.9
± 0.1mm, 3 total length of pressed sheet are 80 ± 0.5mm.3 both ends of pressed sheet are arc-shaped straight panel 41, centre is cydariform straight panel 42,
It is connected that arc-shaped straight panel 41 and cydariform straight panel 42 by two of radius 5mm and radius 7.5mm combine circular arc, wherein radius 5mm
Circular arc be connected respectively with the arc-shaped straight panel 41 in both ends, the circular arc of radius 7.5mm is connected with cydariform straight panel 42.In cydariform straight panel 42
For small cylinder 43, its outer wall straight down be smaller than 11 inner wall of inner cylinder, 1 central axis of central shaft and bushing inner tube at the heart
Collinearly, thickness is equal pressed sheet 4 everywhere, it is with a thickness of 2.5mm；Wherein small cylinder height is 5.5 ± 0.1mm, small-sized circle
Cylinder inner wall width is 12.5mm-12.7mm.Pressed sheet 4 is mounted on interior 11 upper end of round tube, does not contact with buffer stopper 23；Wherein, it rushes
The arc-shaped straight panel 41 at 4 both ends of pressing plate is away from buffer stopper 23 apart from for 3mm.
The present invention realizes the mitigation of rubber bushing weight, satisfaction is used for by the selection of material and the reduction of material
Connect the requirement of the light-duty vehicle of subframe and white body, wherein subframe rubber bushing of the present invention is compared to tradition
Metalwork weight reduces 20%-40%, cost reduces by 10% or so.Meanwhile being designed using structure of the invention, it is ensured that automobile exists
Safety and comfort in driving process.
Claims (6)
1. a kind of rubber bushing suitable for light-duty vehicle subframe, it is characterised in that: it be by bushing inner tube (1), bushing outside
Manage (3), high elastic rubber (2) and pressed sheet (4) composition；Wherein, the bushing inner tube (1) is by inner cylinder (11) and outer cylinder
(12) it forms, has certain distance between inner cylinder (11) outer wall and outer cylinder (12) inner wall and inner cylinder (11) and outer cylinder
(12) point-blank, the bushing inner tube (1) uses alloy material to central axis；The high elastic rubber (2) is coated on
The bushing inner tube (1), both ends are thin, thick middle, and upper and lower ends respectively have a recess angle, upper concave end angle (21) one end be by
High elastic rubber (2), the other end for being closely coated on bushing inner tube (1) are a buffer stopper (23), and lower concave end angle (22) one end is
It is an intilted rubber block (24), the rubber close to high elastic rubber (2), the other end for being coated on bushing inner tube (1)
Block (24) is uniformly distributed around bushing inner tube (1) central axis；The bushing outer tube (3) covers in the high elastic rubber (2) outer wall, is
Polymorphic structure, inner wall is inwardly protruding, and it is an inner chamfer (32) that, which there are a small boss (31), lower end in outer wall upper end, outside the bushing
Pipe (3) middle section is a cylindrical body (33) for being parallel to bushing inner tube, is uniformly distributed square hole on the cylindrical body (33)
(34), the bushing outer tube (3) uses engineering plastics；High elastic rubber (2) upper and lower ends are all coated on outside the bushing
It manages (3)；The pressed sheet (4) is stepped, short among it, both ends are high, and both ends are that arc-shaped straight panel (41), centre are drum-shaped straight
Plate (42) is a small cylinder (43) straight down, its outer wall at cydariform straight panel (42) center than the inner cylinder
(11) inner wall is small, central shaft is conllinear with bushing inner tube (1) central axis, and thickness is equal the pressed sheet (4) everywhere；Institute
Pressed sheet (4) is stated to be mounted on the inner cylinder (11) upper end, do not contact with the buffer stopper (23).
2. a kind of rubber bushing suitable for light-duty vehicle subframe according to claim 1, it is characterised in that: the lining
Cover the alloy material concretely aluminium alloy of inner tube (1)；Concretely high-strength glass is fine for the engineering plastics of the bushing outer tube (3)
Dimension.
3. a kind of rubber bushing suitable for light-duty vehicle subframe according to claim 2, it is characterised in that: in described
Cylinder (11) and the thickness of outer cylinder (12) can be 1.2mm-1.3mm, and distance can be 3.1mm-3.3mm；In the bushing
Managing (1) highly can be 65.9mm-66.2mm.
4. a kind of rubber bushing suitable for light-duty vehicle subframe according to claim 3, it is characterised in that: the side
Shape hole (34) is evenly distributed on bushing outer tube (3) around the central axis of bushing inner tube (1), and square hole (34) bottom is away from bushing outer tube
(3) being equidistant of inner wall, can be 2.4mm-2.6mm.
5. a kind of rubber bushing suitable for light-duty vehicle subframe according to claim 4, it is characterised in that: the punching
Pressing plate (4) total height can be 13.9 ± 0.1mm, and the small cylinder (43) highly can be 5.5 ± 0.1mm, small cylinder (43)
Inner wall width can be 12.5mm-12.7mm；Pressed sheet (4) thickness can be 2.5mm；Pressed sheet (4) total length can for 80 ±
0.5mm。
6. a kind of rubber bushing suitable for light-duty vehicle subframe according to claim 5, it is characterised in that: the circle
It is connected that arc straight panel (41) and the cydariform straight panel (42) by two of radius 5mm and radius 7.5mm combines circular arc, wherein partly
The circular arc of diameter 5mm is connected with arc-shaped straight panel (41) described in both ends respectively, the circular arc of radius 7.5mm and the cydariform straight panel (42)
It is connected；The distance of the arc-shaped straight panel (42) away from the buffer stopper (23) at pressed sheet (4) both ends is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640124.9A CN110360255A (en) | 2019-07-16 | 2019-07-16 | A kind of rubber bushing suitable for light-duty vehicle subframe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640124.9A CN110360255A (en) | 2019-07-16 | 2019-07-16 | A kind of rubber bushing suitable for light-duty vehicle subframe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360255A true CN110360255A (en) | 2019-10-22 |
Family
ID=68219549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910640124.9A Pending CN110360255A (en) | 2019-07-16 | 2019-07-16 | A kind of rubber bushing suitable for light-duty vehicle subframe |
Country Status (1)
| Country | Link |
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| CN (1) | CN110360255A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3875799A1 (en) * | 2019-12-11 | 2021-09-08 | Sujan Cooper Standard AVS Pvt. Ltd. | Silent block bushing |
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| CN102424333A (en) * | 2011-12-05 | 2012-04-25 | 中联重科股份有限公司 | Crane and arm support backward tilting prevention protection device thereof |
| DE102010041217B4 (en) * | 2010-09-22 | 2016-05-12 | Volkswagen Ag | Elastomeric bush bearing with outer sleeve made of plastic |
| CN206217531U (en) * | 2016-11-02 | 2017-06-06 | 北京汽车股份有限公司 | It is applied to bush structure, automotive suspension and the automobile of automotive suspension |
| CN206416791U (en) * | 2017-01-04 | 2017-08-18 | 北京汽车股份有限公司 | Bushing, automobile front under controlling arm and automobile |
| CN108266472A (en) * | 2018-01-16 | 2018-07-10 | 江苏骆氏减震件有限公司 | Elastic shock attenuation bush Assembly |
| CN207777491U (en) * | 2017-11-29 | 2018-08-28 | 福沃克汽车技术（苏州）有限公司 | A kind of secondary frame lining for automobile |
| CN208331077U (en) * | 2018-06-20 | 2019-01-04 | 宁国市瑞普密封件有限公司 | A kind of novel automobile shock absorber rubber bushing |
| CN208686861U (en) * | 2018-08-30 | 2019-04-02 | 上海众力投资发展有限公司 | A kind of bushing product structure |
-
2019
- 2019-07-16 CN CN201910640124.9A patent/CN110360255A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010041217B4 (en) * | 2010-09-22 | 2016-05-12 | Volkswagen Ag | Elastomeric bush bearing with outer sleeve made of plastic |
| CN102424333A (en) * | 2011-12-05 | 2012-04-25 | 中联重科股份有限公司 | Crane and arm support backward tilting prevention protection device thereof |
| CN206217531U (en) * | 2016-11-02 | 2017-06-06 | 北京汽车股份有限公司 | It is applied to bush structure, automotive suspension and the automobile of automotive suspension |
| CN206416791U (en) * | 2017-01-04 | 2017-08-18 | 北京汽车股份有限公司 | Bushing, automobile front under controlling arm and automobile |
| CN207777491U (en) * | 2017-11-29 | 2018-08-28 | 福沃克汽车技术（苏州）有限公司 | A kind of secondary frame lining for automobile |
| CN108266472A (en) * | 2018-01-16 | 2018-07-10 | 江苏骆氏减震件有限公司 | Elastic shock attenuation bush Assembly |
| CN208331077U (en) * | 2018-06-20 | 2019-01-04 | 宁国市瑞普密封件有限公司 | A kind of novel automobile shock absorber rubber bushing |
| CN208686861U (en) * | 2018-08-30 | 2019-04-02 | 上海众力投资发展有限公司 | A kind of bushing product structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3875799A1 (en) * | 2019-12-11 | 2021-09-08 | Sujan Cooper Standard AVS Pvt. Ltd. | Silent block bushing |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |
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| RJ01 | Rejection of invention patent application after publication |