CN106985626B - Macpherson front independent suspension - Google Patents

Macpherson front independent suspension Download PDF

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Publication number
CN106985626B
CN106985626B CN201710120897.5A CN201710120897A CN106985626B CN 106985626 B CN106985626 B CN 106985626B CN 201710120897 A CN201710120897 A CN 201710120897A CN 106985626 B CN106985626 B CN 106985626B
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China
Prior art keywords
shaft hole
connecting bracket
hole
swing arm
lower swing
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Application number
CN201710120897.5A
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Chinese (zh)
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CN106985626A (en
Inventor
梁荣朝
尹华清
窦德海
任鑫
刘浪纯
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Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely New Energy Commercial Vehicle Co Ltd
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Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely New Energy Commercial Vehicle Co Ltd
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Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Geely New Energy Commercial Vehicle Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN201710120897.5A priority Critical patent/CN106985626B/en
Publication of CN106985626A publication Critical patent/CN106985626A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention provides a McPherson front independent suspension, which comprises a shock absorber bracket assembly, a knuckle connected with the shock absorber bracket assembly through a connecting bracket and a lower swing arm connected with the connecting bracket; the connecting bracket is provided with a first shaft hole, a second shaft hole and a third shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, the first fastener penetrates through the first shaft hole and the second shaft hole to fix the knuckle at the connecting bracket, so that a connecting line of the first shaft hole and the second shaft hole forms a main pin axis, and the second fastener penetrates through the third shaft hole to pivotally connect the lower swing arm with the connecting bracket. The two parts of the knuckle and the connecting bracket are designed to be connected through the shaft hole, so that the steering operation force can be improved, the steering return performance can be improved, the braking stability can be improved, and the like; the connecting support of the suspension is connected with the lower swing arm through the shaft hole, so that the problem of excessive degrees of freedom of external motion after the traditional Macpherson suspension is changed into the physical kingpin Macpherson front independent suspension is solved.

Description

Macpherson front independent suspension
Technical Field
The invention relates to an automobile chassis suspension system, in particular to a Macpherson front independent suspension.
Background
Along with the gradual aggravation of the urban process, the road space inside the city is severely limited, and the requirements on the passing performance and the maneuvering performance of the whole vehicle are higher and higher.
As an important index for measuring the passing performance and the maneuvering performance of an automobile, the quality of the performance of the chassis of the automobile is important. The Macpherson independent suspension is generally used for the automobile chassis, the suspension can ensure the cost of the whole automobile and meet the requirement of the front cabin space, so that the arrangement of a power assembly is met, and after the axis of a physical kingpin is added, a plurality of performance indexes can be quantized independently, so that the performance of the chassis is greatly improved.
The traditional Macpherson independent suspension has the characteristics of simple and compact structure, small occupied space and the like, and has become a suspension structure form widely adopted on automobiles, and the motion characteristics of the suspension relate to the performances of automobile steering stability, comfort, steering portability and the like.
The Macpherson front independent suspension serving as a steering axle needs to have a rotational freedom degree around the axis of a main pin to realize steering movement in order to ensure the kinematic performance of the suspension; it is also necessary to have a degree of freedom of steering about a direction parallel to the longitudinal axis to achieve a jerk up and down motion, i.e. the three parts knuckle, connecting bracket and lower swing arm ensure two degrees of freedom. The steering knuckle and the connecting bracket of the traditional Macpherson front independent suspension are integrated into a whole, and are connected with the lower swing arm through the ball head, and two degrees of freedom of one connecting point are adopted, so that the problem of excessive degrees of freedom of the suspension is definitely caused.
Disclosure of Invention
In order to solve the problem that the traditional Macpherson suspension is changed into a solid kingpin Macpherson suspension, and the Macpherson front independent suspension has excessive degrees of freedom for external motion, the invention provides the Macpherson front independent suspension, wherein the connection mode between a steering knuckle and a connecting bracket is designed to be shaft hole connection, and the connection mode between the connecting bracket and a lower swing arm is also designed to be shaft hole connection.
A further object of the present invention is to propose a macpherson front independent suspension comprising:
a shock absorber support assembly;
the steering knuckle is connected with the shock absorber bracket assembly through a connecting bracket; and
a lower swing arm connected with the connecting bracket;
the connecting bracket is provided with a first shaft hole, a second shaft hole and a third shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, a first fastener penetrates through the first shaft hole and the second shaft hole to fix the knuckle at the connecting bracket, so that a connecting line of the first shaft hole and the second shaft hole forms a main pin axis, and a second fastener penetrates through the third shaft hole to pivotally connect the lower swing arm with the connecting bracket.
Further, one end of the lower swing arm is provided with a first block and a second block which is arranged opposite to the first block, and a space is defined between the first block and the second block;
a first through hole is formed in the first block, and a second through hole opposite to the first through hole is formed in the second block;
wherein the second fastener is provided so as to pass through the first through hole, the third shaft hole, and the second through hole in order to pivotably connect the lower swing arm with the connection bracket.
Further, the connecting bracket has a third block, the third shaft hole being provided at the third block;
wherein the third block is configured to be insertable at the space between the first block and the second block.
Further, one end of the lower swing arm is provided with a first mounting hole;
the connecting bracket is provided with a U-shaped connecting part, and the U-shaped connecting part is provided with a second mounting hole and a third mounting hole opposite to the second mounting hole;
wherein, one end of lower swing arm is configured to pass through and inserts and establish U type connecting portion department, so that the second fastener can pass in proper order the second mounting hole, first mounting hole and third mounting hole.
Further, the connection bracket is provided with a lug, which is located at one side of the connection bracket.
Further, the lugs include a first lug and a second lug disposed opposite the first lug, the first lug and the second lug defining a space;
wherein the second lug is adjacent to one side of the third block of the connecting bracket.
Further, the first shaft hole is provided at the first lug, and the second shaft hole is provided at the second lug.
Optionally, the first fastener and the second fastener are bolts, screws or studs.
The two parts of the steering knuckle and the connecting bracket are designed to be connected through the shaft holes, so that the Y-axis span can be greatly increased by the main pin axis, and ideal parameters can be obtained by the main pin inner inclination angle and the main pin inner offset of the whole Macpherson front independent suspension, so that the steering operation force, steering return performance, braking stability and other chassis performances can be improved.
Furthermore, the kingpin axis of the Macpherson front independent suspension is offset to the outer side, so that the distance from the wheel center and the ground grounding point to the steering axis is effectively reduced, and the steering wheel shaking phenomenon caused by the fact that the rotation radius is reduced when unfavorable force and torque fluctuation are generated at the tire can be greatly reduced.
Furthermore, the connecting support of the Macpherson front independent suspension and the lower swing arm are connected through the shaft hole, so that the original spherical hinge connection of the connecting support and the lower swing arm is changed into a shaft hole connection structure, and two degrees of freedom are reduced into one degree of freedom, and therefore the problem that the degree of freedom of external movement of the Macpherson front independent suspension is excessive after the traditional Macpherson front independent suspension is changed into the physical main pin Macpherson front independent suspension is solved.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic block diagram of a prior art Macpherson independent suspension and knuckle assembly;
FIG. 2 is a block diagram of a Macpherson front independent suspension according to an embodiment of the present invention;
FIG. 3 is an exploded view of a Macpherson front independent suspension according to an embodiment of the present invention;
fig. 4 is an enlarged view of a portion of the lower swing arm and the U-shaped connection of the connection bracket of the macpherson front independent suspension of the present invention in fig. 2.
Detailed Description
FIG. 1 is a schematic block diagram of a prior art Macpherson independent suspension and knuckle assembly. As shown in fig. 1, the conventional macpherson independent suspension may generally include a macpherson independent suspension 1 and a knuckle structure 2, wherein an upper end of the knuckle structure 2 is fixedly connected with a shock absorber 101 of the macpherson independent suspension 1, and a lower end of the knuckle structure 2 is connected with a lower swing arm 102 of the macpherson independent suspension 1 through a ball pin 201. During running of the vehicle, the relative distance between the fixed point of the lower swing arm 102 of the macpherson independent suspension 1 and the knuckle structure 2 and the fixed point of the shock absorber 101 and the knuckle structure 2 continuously changes, when the vehicle jumps up, the distance between the fixed point of the lower swing arm 102 and the knuckle structure 2 and the fixed point of the shock absorber 101 and the knuckle structure 2 decreases, whereas when the vehicle jumps down, the distance between the fixed point of the lower swing arm 102 and the knuckle structure 2 and the fixed point of the shock absorber 101 and the knuckle structure 2 increases. Further, the change in the relative distance between the fixed point of the lower swing arm 102 of the macpherson independent suspension 1 and the knuckle structure 2 and the fixed point of the shock absorber 101 and the knuckle structure 2 is accompanied not only by the change in the distance in the vertical direction but also by the change in the distance in the vehicle front-rear direction, which makes the steering performance of the vehicle unstable, and at the same time, the instability of the steering system adversely affects the performance of the macpherson independent suspension 1.
As a modification, the invention changes the ball pin 201 of the connecting member in fig. 1 by adopting a shaft hole connection mode. Fig. 2 is a block diagram of a macpherson front independent suspension according to one embodiment of the present invention. The present invention provides a front independent macpherson suspension 3, the front independent macpherson suspension 3 may generally include: the shock absorber support assembly 4, a steering knuckle 6 connected with the shock absorber support assembly 4 through a connecting support 5 and a lower swing arm 7 connected with the connecting support 5.
Fig. 3 is an exploded view of a macpherson front independent suspension according to one embodiment of the present invention. With reference to fig. 3, one side of the connecting bracket 5 of the macpherson front independent suspension 3 proposed by the present invention is provided with two opposite lugs, including a first lug 8 and a second lug 9; the first lug 8 is provided with a first shaft hole 10, and the second lug 9 is provided with a second shaft hole 11; the connecting bracket 5 is also provided with a third shaft hole 12, and since the first shaft hole 10 and the second shaft hole 11 are arranged on the same side of the connecting bracket 5, the first fastener can pass through the first shaft hole 10 and the second shaft hole 11 to fix the knuckle 6 at the connecting bracket 5, so that the connecting line of the first shaft hole 10 and the second shaft hole 11 forms a main pin axis, and the second fastener passes through the third shaft hole 12 to pivotally connect the lower swing arm 7 with the connecting bracket 5. One end of the lower swing arm 7 is provided with a first block 13 and a second block 14 which is arranged opposite to the first block 13, and a space is defined between the first block 13 and the second block 14; the first block 13 is provided with a first through hole 15, and the second block 14 is provided with a second through hole 16 opposite to the first through hole 15; the second fastener can pivotally connect the lower swing arm 7 with the connection bracket 5 through the first through hole 15, the third through hole 12, and the second through hole 16 in this order. The connecting bracket 5 is also provided with a third block 17, and the third shaft hole 12 is arranged on the third block 17; the third block 17 can be interposed at a space between the first block 13 and the second block 14.
Fig. 4 is an enlarged view of a portion of the lower swing arm and the U-shaped connection of the connection bracket of the macpherson front independent suspension of the present invention in fig. 2. As shown in fig. 4, one end of the lower swing arm 7 has a first mounting hole 18; the connecting bracket 5 has a U-shaped connecting portion having a second mounting hole 19 and a third mounting hole 20 opposite to the second mounting hole 19; one end of the lower swing arm 7 can pass through and be inserted at the U-shaped connection portion so that the second fastener can pass through the second mounting hole 19, the first mounting hole 18 and the third mounting hole 20 in order. In addition, it is also conceivable for a person skilled in the art that the lower swing arm 7 has a U-shaped connection portion, and when the lower swing arm 7 is connected to the shaft hole of the connection bracket 5, the connection bracket 5 passes through the U-shaped connection portion of the lower swing arm 7 so that the second fastening member can be connected through the plurality of mounting holes in sequence.
Optionally, the first fastener and the second fastener are bolts, screws or studs.
Specifically, the knuckle 6 of the McPherson front independent suspension 3 is connected with the shaft hole of the connecting bracket 5 through a kingpin axis formed by the connection line of the first shaft hole 10 and the second shaft hole 11; the connecting bracket 5 is connected with the shaft hole of the lower swing arm 7 through a shaft hole; a degree of freedom of rotation about the kingpin axis is provided between the knuckle 6 and the connecting bracket 5; the shaft hole connection mode between the connecting bracket 5 and the lower swing arm 7 changes into a degree of freedom of rotation around the direction of the parallel longitudinal axis; the knuckle 6 and the connecting bracket 5 are designed to be connected through shaft holes, the main pin axis can greatly increase the Y-axis span, and ideal parameters can be obtained for the main pin inner inclination angle and the main pin inner offset of the whole suspension; the connecting bracket 5 is connected with the lower swing arm 7 through a shaft hole, so that the original spherical hinge connection of the connecting bracket 5 and the lower swing arm 7 is changed into a shaft hole connection structure, and two degrees of freedom are reduced into one degree of freedom; the effect of the degree of freedom reduction is that steering operation force can be improved, steering return performance is improved, various performances of the chassis such as braking stability are improved, the distance from a wheel center and a ground grounding point to a steering axis is effectively reduced, and therefore when adverse force and torque fluctuation are generated at a tire, the occurrence of steering wheel shaking phenomenon caused by the reduction of the rotation radius can be greatly reduced.
The two parts of the knuckle 6 and the connecting bracket 5 are designed to be connected through the shaft holes, so that the main pin axis can greatly increase the Y-axis span, and the main pin inner inclination angle and the main pin inner offset distance of the whole suspension can obtain ideal parameters, so that the steering operation force, steering return performance, braking stability and other chassis performances can be improved.
The main pin axis of the suspension is deviated outwards, so that the distance from the wheel center and the ground grounding point to the steering axis is effectively reduced, and the steering wheel shaking phenomenon caused by the reduction of the rotation radius can be greatly reduced when unfavorable force and torque fluctuation is generated at the tire.
The connecting bracket 5 and the lower swing arm 7 of the suspension are connected through the shaft hole, so that the original spherical hinge connection of the connecting bracket 5 and the lower swing arm 7 is changed into a shaft hole connection structure, and two degrees of freedom are reduced into one degree of freedom, and therefore the problem that the traditional McPherson suspension is changed into a solid master pin McPherson suspension, and then the McPherson front independent suspension 3 has excessive degrees of freedom for external motion is solved.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (6)

1. A macpherson front independent suspension comprising:
a shock absorber support assembly;
the steering knuckle is connected with the shock absorber bracket assembly through a connecting bracket; and
a lower swing arm connected with the connecting bracket;
the connecting bracket is provided with a first shaft hole, a second shaft hole and a third shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, a first fastener penetrates through the first shaft hole and the second shaft hole to fix the knuckle at the connecting bracket, so that a connecting line of the first shaft hole and the second shaft hole forms a main pin axis, and a second fastener penetrates through the third shaft hole to pivotally connect the lower swing arm with the connecting bracket;
one end of the lower swing arm is provided with a first mounting hole;
the connecting bracket is provided with a U-shaped connecting part, and the U-shaped connecting part is provided with a second mounting hole and a third mounting hole opposite to the second mounting hole;
wherein one end of the lower swing arm is configured to be capable of passing through and being inserted at the U-shaped connecting portion, so that the second fastener can pass through the second mounting hole, the first mounting hole and the third mounting hole in sequence;
the connecting bracket is provided with a lug, and the lug is positioned on one side of the connecting bracket.
2. The front macpherson independent suspension according to claim 1, wherein one end of the lower swing arm has a first mass and a second mass disposed opposite the first mass, the first mass and the second mass defining a space therebetween;
a first through hole is formed in the first block, and a second through hole opposite to the first through hole is formed in the second block;
wherein the second fastener is provided so as to pass through the first through hole, the third shaft hole, and the second through hole in order to pivotably connect the lower swing arm with the connection bracket.
3. The front macpherson independent suspension according to claim 2, wherein the connecting bracket has a third block at which the third axle hole is provided;
wherein the third block is configured to be insertable at the space between the first block and the second block.
4. The front macpherson independent suspension according to claim 1, wherein the lugs include a first lug and a second lug disposed opposite the first lug, the first and second lugs defining a space;
wherein the second lug is close to one side of the third block of the connecting bracket.
5. The front macpherson independent suspension according to claim 4, wherein the first axle bore is provided at the first lug and the second axle bore is provided at the second lug.
6. The macpherson front independent suspension according to claim 1, wherein the first and second fasteners are bolts, screws, or studs.
CN201710120897.5A 2017-03-02 2017-03-02 Macpherson front independent suspension Active CN106985626B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710120897.5A CN106985626B (en) 2017-03-02 2017-03-02 Macpherson front independent suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710120897.5A CN106985626B (en) 2017-03-02 2017-03-02 Macpherson front independent suspension

Publications (2)

Publication Number Publication Date
CN106985626A CN106985626A (en) 2017-07-28
CN106985626B true CN106985626B (en) 2023-06-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710120897.5A Active CN106985626B (en) 2017-03-02 2017-03-02 Macpherson front independent suspension

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103121387B (en) * 2013-02-07 2015-07-22 柳州孔辉汽车科技有限公司 MacPherson air suspension and assembly method thereof
CN203198673U (en) * 2013-02-07 2013-09-18 柳州孔辉汽车科技有限公司 Macphersan air suspension
CN103660829B (en) * 2013-12-12 2016-03-30 北京长安汽车工程技术研究有限责任公司 A kind of McPherson automobile front suspension structure
CN104890461B (en) * 2015-06-23 2018-04-13 安徽江淮汽车集团股份有限公司 A kind of double cross arm independent suspension and knuckle assembly
CN206606023U (en) * 2017-03-02 2017-11-03 浙江吉利新能源商用车有限公司 A kind of McPherson independent front suspension

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