KR20170010187A - Suspension structure for vehicle - Google Patents

Suspension structure for vehicle Download PDF

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Publication number
KR20170010187A
KR20170010187A KR1020150100755A KR20150100755A KR20170010187A KR 20170010187 A KR20170010187 A KR 20170010187A KR 1020150100755 A KR1020150100755 A KR 1020150100755A KR 20150100755 A KR20150100755 A KR 20150100755A KR 20170010187 A KR20170010187 A KR 20170010187A
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KR
South Korea
Prior art keywords
synthetic resin
vehicle
metal
metal beam
base
Prior art date
Application number
KR1020150100755A
Other languages
Korean (ko)
Inventor
강경범
Original Assignee
현대자동차주식회사
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Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020150100755A priority Critical patent/KR20170010187A/en
Publication of KR20170010187A publication Critical patent/KR20170010187A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/70—Materials used in suspensions
    • B60G2206/71—Light weight materials
    • B60G2206/7101—Fiber-reinforced plastics [FRP]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/70—Materials used in suspensions
    • B60G2206/72—Steel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The present invention relates to a vehicle suspension structure, which comprises: a base provided on the front end side of the frame lower unit; a metal beam formed with a metal material, having one end unit coupled to a steering knuckle of a vehicle wheel and the other end coupled to the base; and a synthetic resin beam formed with a synthetic resin and provided in the width direction of the vehicle, having one end unit coupled to the steering knuckle of the vehicle wheel or one end side of the metal beam, and having the other end unit coupled to the base. Disclosed is the vehicle suspension structure, having the other end of the metal beam coupled to the base, which enables the same to be positioned on the back side further than the other end unit of the synthetic resin beam.

Description

[0001] Suspension structure for vehicle < RTI ID = 0.0 >

The present invention relates to a vehicle suspension structure that increases the durability of a suspension and satisfies the safety required in the event of a vehicle collision.

Generally, a vehicle has a suspension structure for controlling vibration during running and impact on the ground. Suspension refers to a device that reduces the impact of the vehicle from the ground by adjusting the vertical position of the vehicle wheel by using a spring and a shock absorber to reduce the discomfort of the occupant and the impact of the vehicle body.

On the other hand, a wheel WHEEL of the vehicle is fixed to the vehicle body by being connected to the suspension device. When the vehicle crashes in front of the vehicle, the wheel moves rearward with the front collision while being fixed to the vehicle body, .

This is critical in securing the safety of the indoor space in order to protect the person occupying the front seat of the vehicle. Particularly, there is a high probability that the vehicle wheel will infiltrate into the interior space in the event of a small overlap (SMALL OVER LAP) collision in which only a side region on one side from the front of the vehicle is collided to evaluate the safety of the occupant. do.

In order to solve the safety problem of the vehicle collision, as a currently used device, a hole is formed in a middle portion of a suspension arm or a control arm for fixing a vehicle wheel in a front suspension of a vehicle, A part of the suspension arm is broken at the front collision of the vehicle, so that the front wheel of the vehicle does not penetrate into the interior space, and many companies are continuously trying to develop a vehicle suspension structure that improves the safety of the occupant.

In this connection, Korean Patent Registration No. 10-0412518 'Strut fastening structure for automobile suspension' can be referred to.

However, the above-described suspension arm has a weak strength to support the vehicle wheel while supporting the load of the vehicle body, and the provision of a hole or the like to induce the suspension of the suspension arm locally weakens the strength of the arm, . ≪ / RTI >

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

KR 10-0412518 B1

It is an object of the present invention to provide a vehicle suspension structure that increases the durability of a suspension and satisfies the safety required in a vehicle collision.

According to an aspect of the present invention, there is provided a vehicle suspension structure including: a base provided at a front end side of a lower portion of a vehicle body; One end of which is coupled to the steering knuckle of the vehicle wheel and the other end of which is formed of a metal material; And a synthetic resin beam which is formed of synthetic resin and is provided in the width direction of the vehicle, one end of which is fastened to one end of the steering knuckle or metal beam of the vehicle wheel and the other end of which is fastened to the base, Is fastened to the base so as to be positioned behind the other end of the synthetic resin beam.

The synthetic resin beam may be formed of a synthetic resin having reinforcing fibers interposed therebetween.

The synthetic resin beam may include reinforcing fibers arranged in the longitudinal direction of the synthetic resin beam.

The metal beam may have a curved shape with its center portion facing the front of the vehicle.

When one end of the synthetic resin beam is fastened to one end of the metal beam, one end of the synthetic resin beam may be formed so as to surround the outer surface of one end of the metal beam to form a reinforced portion mutually coupled.

The reinforcing portion can be formed by inserting one end of the metal beam into the metal mold and molding the synthetic resin beam.

The reinforcing portion can be fastened to the steering knuckle of the vehicle wheel at its end.

The synthetic resin beam can be formed into a streamlined shape in cross section.

Both end portions of the synthetic resin beam or the metal beam can be formed to be thicker than the central portion.

Both end portions of the synthetic resin beam or the metal beam can be hinged so as to be rotatable in the vertical direction of the vehicle.

According to the vehicle suspension structure having the above-described structure, it is possible to increase the durability of the suspension and satisfy the safety required in a vehicle collision.

In particular, the arm or beam constituting the suspension has a beam coupled to the vehicle wheel at the front side and a beam coupled to the vehicle wheel at the rear side, and the beam at the front side is formed using a synthetic resin, And the rear side beam is formed of a metal material so that when the beam on the front side is broken, the beam is bent to rotate to the outside of the vehicle body to rotate the vehicle wheel to the outside of the vehicle body. Accordingly, the risk of the occupant of the vehicle due to the collision of the vehicle can be reduced and the safety can be improved.

At the same time, the beam formed of the synthetic resin is formed of a composite material having no stress concentration portion such as a hole and preferably with reinforcement fibers interposed therebetween, so that it is possible to have durability for supporting the load of the vehicle and to improve the durability of the vehicle suspension It is.

1 is a rear view of a vehicle suspension structure according to an embodiment of the present invention;
2 is a view showing a coupling relationship of a vehicle suspension structure according to an embodiment of the present invention.
3 is a cross-sectional view of a synthetic resin beam in a vehicle suspension structure according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a rear view showing a vehicle suspension structure 100 according to an embodiment of the present invention, FIG. 2 is a view showing a coupling relationship of the vehicle suspension structure 100 according to an embodiment of the present invention, 1 is a cross-sectional view of a synthetic resin beam 200 in a vehicle suspension structure 100 according to an embodiment of the present invention.

The present invention can be simply and effectively solved by increasing the durability of the vehicle suspension structure 100 and utilizing the present invention for satisfying the safety required in the event of a vehicle collision.

1 and 2, a vehicle suspension structure 100 according to the present invention includes: a base 150 provided at a front end side of a lower portion of a vehicle body; One end 260 of which is coupled to the steering knuckle 340 of the vehicle wheel 310 and the other end 270 of which is formed of a metal beam 250 fastened to the base 150; And one end portion 210 is coupled to the steering knuckle 340 of the vehicle wheel 310 or one end portion 260 side of the metal beam 250, The synthetic resin beam 220 is connected to the base 150 and the other end 270 of the metal beam 250 is positioned behind the other end 220 of the synthetic resin beam 200, (Not shown).

Specifically, as shown in FIG. 1, the base 150 of the present invention is provided at the front end side of the lower portion of the vehicle body. The shape may vary and preferably be provided in the form of a suspension cross member extending in the width direction of the vehicle.

The base 150 is coupled to a constant velocity shaft, a transmission or a suspension beam, The vehicle wheel 310 is positioned on both sides of the base 150 and a suspension beam is fastened to the vehicle wheel 310 and the base 150. 1 and 2 show a side view of the base 150 and a coupling relationship with the suspension beam.

1 and 2, in the vehicle suspension structure 100 according to the present invention, the synthetic resin beam 200 is formed of synthetic resin and is provided in the width direction of the vehicle, And the other end portion 270 is fastened to the base 150. The other end portion 270 is fastened to the steering knuckle 340 or the one end portion 260 side of the metal beam 250,

Specifically, it may be in the form of a beam and may extend in the width direction of the vehicle, and is provided between the vehicle wheel 310 and the base 150. The synthetic resin may be made of various materials such as polyethylene and polypropylene.

One end portion 210 of the synthetic resin beam is coupled to one end of the steering knuckle 340 or the metal beam. The steering knuckle 340 is disposed outside the disk located in the vehicle wheel 310, And a suspension beam for fixing to the vehicle body is fastened. Both ends of the synthetic resin beam 200 may be hinge-fastened, welded, or integrally formed.

Since synthetic resin is lighter than metal material, it is advantageous in lightening the weight of the body. Since it does not require a device or structure for causing breakage particularly because of high brittleness, there is no stress concentration area and it is advantageous to bear the load of the body, It is helpful.

Therefore, when the impact is applied to the synthetic resin beam 200 at the time of a frontal collision of the vehicle, the vehicle wheel 310 is not fixed but deviated to the outside of the vehicle body, I will.

1 and 2, the metal beam 250 of the vehicle suspension structure 100 of the present invention is formed of a metal material, and the one end portion 260 is coupled to the steering knuckle 340 of the vehicle wheel 310 And the other end 270 is fastened to the base 150.

Specifically, the metal beam 250 is formed of a metal material, and the metal material may be various materials such as steel, aluminum, and the like. And is disposed between the base 150 and the vehicle wheel 310 to secure the vehicle wheel 310 to the base 150 of the suspension.

At this time, preferably, one end 260 of the metal beam 250 is fastened together at a point where one end 210 of the synthetic resin beam 200 is fastened together, or one end of the synthetic resin beam is connected to the metal beam And the other end 270 of the metal beam 250 engages with the side of the base 150 at a rear side than the point where the synthetic resin beam 200 is fastened to the base 150. [

Accordingly, one end of the metal beam is preferably coupled to the same point as the one end 210 of the synthetic resin beam 200 provided in the width direction of the vehicle, or one end of the synthetic resin beam is connected to one end of the metal beam, And the other end portion 270 may be spaced rearward and may have a shape extending obliquely to form an acute angle at the side of the vehicle wheel 310 in relation to the synthetic resin beam 200 .

FIGS. 1 and 2 show the state of the synthetic resin beam 200 and the metal beam 250 in a combined state as an embodiment of the present invention. Thus, the metal beam 250 is preferably located behind the synthetic beam 200 and serves to secure the vehicle wheel 310 to the base 150.

Particularly, when the synthetic resin beam 200 is broken due to a front collision of the vehicle, the metal beam 250 is formed of a metal material having lower brittleness than synthetic resin, so that the metal beam 250 is bent instead of rupture.

The vehicle wheel 310 is coupled to the one end 260 of the metal beam 250 and the other end 270 of the metal beam 250 coupled with the base 150 is used as a center axis, 250 are deflected and rotated to the outside of the vehicle.

At this time, preferably, the metal beam 250 provided between the vehicle wheel 310 and the base 150 extends in an oblique direction, so that the vehicle wheel 310 can be rotated to the outside of the vehicle. In order to rotate the vehicle wheel 310 outwardly, the vehicle wheel 310 must be moved away from the center of the vehicle body. When the metal beam 250 is extended in the vehicle width direction, the metal beam 250 itself is extended, The distance from the center is fixed and the vehicle wheel 310 can not move outward.

That is, when the synthetic resin beam 200 is fractured, the metal beam 250 is extended from the base 150 to the base 150, The one end portion 260 of the vehicle wheel 310 coupled to the one end portion 260 can be rotated to the outside of the vehicle as the one end portion 260 is bent outwardly of the vehicle about the other end portion 270 coupled to the one end portion 260.

Therefore, the vehicle wheel 310 rotated to the outside of the vehicle does not invade the interior space due to an impact from the front side, thereby increasing the safety of the interior of the vehicle. As a result, the separation structure of the vehicle wheel 310 can be produced in the interrelationship between the synthetic resin beam 200 and the metal beam 250, thereby securing the safety and durability of the vehicle.

2, the synthetic resin beam 200 in the vehicle suspension structure 100 of the present invention may be formed of a synthetic resin having reinforcing fibers 240 interposed therebetween.

The synthetic resin beam 200 plays a role of supporting a part of the load of the vehicle together with the metal beam 250. When only the synthetic resin is used, the strength is lower than that of the conventional metal beam.

Thus, the synthetic resin beam 200 is formed of synthetic resin through the reinforcing fiber 240 that forms the high strength. The reinforcing fiber 240 may be composed of various materials such as carbon fiber and glass fiber as a fiber reinforcing agent having excellent strength.

As a result, by using the synthetic resin with the reinforcement fiber 240 interposed therebetween, it is possible to secure the durability of the suspension by satisfying the required strength of the synthetic resin beam 200 that supports the load of the vehicle body and fixes the vehicle wheel 310 to the vehicle body, So that it can be easily broken at the time of frontal collision, thereby enhancing the safety of the vehicle body and reducing the weight of the vehicle body compared to the metal material.

2, in the vehicle suspension structure 100 according to the present invention, the synthetic resin beam 200 may include the reinforcement fibers 240 arranged in the longitudinal direction of the synthetic resin beam 200. As shown in FIG.

The reinforcing fibers 240 exhibit a strong strength against the force transmitted in the fiber direction, and particularly, the tensile force in the fiber direction is strong. Meanwhile, the synthetic resin beam 200 constituting the suspension supports the load of the vehicle. The load acts on the side of the synthetic resin beam 200 as the load acts on the height of the vehicle, ) In the longitudinal direction.

Therefore, when the reinforcement fibers 240 are interposed in the longitudinal direction of the synthetic resin beam 200, it is possible to exhibit increased rigidity in supporting the load of the chan- nel, to improve the durability of the suspension, It is possible to improve the durability.

Meanwhile, as shown in FIGS. 1 and 2, the metal beam 250 of the present invention may have a curved shape with its center portion facing the front of the vehicle.

The central portion of the metal beam 250 may be curved so as to protrude toward the synthetic resin beam 200 positioned at the front or the front of the vehicle. Preferably, the central portion of the metal beam 250 may extend from one end 260 of the metal beam 250, The shape of the curve may be a shape in which the inclination gradually increases toward the center 270.

The metal beam 250 is bent while the one end portion 260 is rotated around the other end portion 270 in the front collision of the vehicle while the vehicle wheel 310 rotates to the outside of the vehicle and the vehicle wheel 310 is in contact with the other end portion 270 of the metal beam 250, Not only the rotation of the vehicle wheel 310 and the metal beam 250 but also a small rotation about the center of the fastening point of the vehicle wheel 310 and the metal beam 250 occur.

Thus, the metal beam 250 is shaped in a pre-warp direction so that the energy for impact facilitates turning the metal beam 250 into strain energy for bending, thereby facilitating rotation of the vehicle wheel 310 will be.

In order for the vehicle wheel 310 to rotate and move outside the vehicle, the length of the metal beam 250 must be secured. As the metal beam 250 is bent, the length of the metal beam 250 is increased. The length of the metal beam 250 required for the movement distance is further increased and secured.

2, when the one end 210 of the synthetic resin beam 200 is fastened to one end 260 of the metal beam 250, the vehicle suspension structure 100 according to the embodiment of the present invention may be constructed such that, One end 210 of the synthetic resin beam 200 may be formed to surround the outer surface of the one end 260 of the metal beam 250 to form a reinforcing part 230 coupled to each other.

The synthetic resin beam 200 and the metal beam 250 have different materials from each other and require a special method for coupling. Therefore, it is not possible to perform welding or the like between general metals, and an adhesive or a joint is used. However, this method has a problem that durability is reduced due to low bonding force between the metals.

On the other hand, by forming the one end 210 of the synthetic resin beam 200 formed of synthetic resin having a good formability at the outer surface of the one end 260 of the metal beam 250, the mutual coupling force is maximized and the stability of the coupling is excellent The durability of the vehicle can be improved.

In addition, one end portion of the synthetic resin beam 200 and the metal beam 250, which are portions to be coupled with the vehicle wheel 310, are required to have higher strength as compared with the other side. On the other hand, by forming the metal beam 250 and the synthetic resin beam 200 integrally, it is possible to form a higher strength and satisfy the durability against impact transmitted from the vehicle wheel 310 side.

The reinforcing portion 230 of the vehicle suspension structure 100 according to the embodiment of the present invention may be formed by inserting one end portion 260 of the metal beam 250 into a metal mold and molding the synthetic resin beam 200 .

The insert molding refers to a technique in which a synthetic resin is injected into a mold in a state in which a mounting portion capable of placing insert water is placed in the mold and the insert is placed on the mold.

The forming of the synthetic resin beam 200 on the outer surface of the one end 260 of the metal beam 250 causes the gap or the other member to be required.

Accordingly, by inserting the metal beam 250 and forming the one end 210 of the synthetic resin beam 200 directly on the outer surface of the metal beam 250, the mutual bonding force can be enhanced, the strength can be increased, It is.

2, an end of the reinforcing portion 230 according to an embodiment of the present invention may be fastened to the steering knuckle 340 of the vehicle wheel 310. As shown in FIG.

The reinforcing portion 230 may be formed at one end 210 of the synthetic resin beam 200 and at the other end 260 of the metal beam 250 not at the steering knuckle 340, Both the synthetic resin beam 200 and the metal beam 250 can be fastened to the steering knuckle 340 by fastening the reinforcing portion 230 with the steering knuckle 340 of the vehicle wheel 310.

Particularly, impact transmitted from the vehicle wheel 310 at the coupling portion with the steering knuckle 340 largely affects the reinforcing portion 230 in which the metal beam 250 and the synthetic resin beam 200 are combined with each other, The durability of the coupling point can be improved.

3, in the vehicle suspension structure 100 according to another embodiment of the present invention, the synthetic resin beam 200 may be formed in a streamlined shape in cross section.

The streamline type is basically a shape in which the front part has a curved shape and becomes sharp toward the rear part, and is a shape capable of gently curving the flow of fluid and greatly reducing the resistance to movement.

Therefore, by forming the cross section of the synthetic resin beam 200, which is formed of synthetic resin and superior in moldability than the general metal, so as to have a streamlined cross section toward the front of the vehicle, the air resistance that may occur during the running of the vehicle can be reduced to improve the running performance There is an advantage.

1, in the vehicle suspension structure 100 according to the embodiment of the present invention, both ends of the synthetic resin beam 200 or the metal beam 250 may be formed to be thicker than the central portion.

The impact of the synthetic beam 200 and the metal beam 250 is concentrated at a point where the synthetic beam 200 and the metal beam 250 are coupled with the steering knuckle 340 and the base 150 of the vehicle wheel 310 A phenomenon occurs.

Therefore, both side ends of the synthetic resin beam 200 or the metal beam 250 on which the coupling part is formed are formed to be thicker than the center part, so that the rigidity is increased, and breakage can be prevented due to concentration of impact occurring at the coupling point.

2, in the vehicle suspension structure 100 according to the embodiment of the present invention, both ends of the synthetic resin beam 200 or the metal beam 250 can be hinged so as to be rotatable in the vertical direction of the vehicle have.

The vehicle suspension basically alleviates the shock caused by the height difference that can occur from the ground during operation, and the components constituting the suspension need to be freely movable up and down.

Accordingly, the joint point between the synthetic resin beam 200 and the metal beam 250 is fastened as a hinge, and the hinge can rotate the vehicle in the up-and-down direction. Thus, It is possible to perform the function of relieving the shock at the same time.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

100: vehicle suspension structure 150: base
200: synthetic resin beam 250: metal beam

Claims (10)

A base provided at a front end side of a lower portion of the vehicle body;
One end of which is coupled to the steering knuckle of the vehicle wheel and the other end of which is formed of a metal material; And
And a synthetic resin beam which is formed of a synthetic resin and is provided in the width direction of the vehicle, one end of which is fastened to one end of the steering knuckle or metal beam of the vehicle wheel and the other end is a synthetic resin beam fastened to the base,
And the other end of the metal beam is fastened to the base so as to be positioned behind the other end of the synthetic resin beam. The method according to claim 1,
Wherein the synthetic resin beam is formed of a synthetic resin having reinforcement fibers interposed therebetween. The method according to claim 1,
Wherein the synthetic resin beam includes reinforcement fibers arranged in the longitudinal direction of the synthetic resin beam. The method according to claim 1,
Wherein the metal beam has a curved shape with a central portion thereof directed toward the front of the vehicle. The method according to claim 1,
Wherein when one end of the synthetic resin beam is fastened to one end of the metal beam, one end of the synthetic resin beam is formed so as to surround the outer surface of one end of the metal beam, thereby forming a reinforced portion mutually coupled. The method of claim 5,
Wherein the reinforcing portion is formed by inserting one end of the metal beam into the mold and molding the synthetic resin beam. The method of claim 5,
And the reinforcing portion is fastened to the steering knuckle of the vehicle wheel at an end thereof. The method according to claim 1,
Wherein the synthetic resin beam is formed in a streamlined shape in cross section. The method according to claim 1,
Wherein both end portions of the synthetic resin beam or the metal beam are formed thicker than the central portion. The method according to claim 1,
Wherein both end portions of the synthetic resin beam or the metal beam are hinged so as to be rotatable in the vertical direction of the vehicle.
KR1020150100755A 2015-07-16 2015-07-16 Suspension structure for vehicle KR20170010187A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016159676A (en) * 2015-02-27 2016-09-05 富士重工業株式会社 Suspension device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100412518B1 (en) 2001-09-24 2003-12-31 현대자동차주식회사 Suspension strut fixing structure for car

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100412518B1 (en) 2001-09-24 2003-12-31 현대자동차주식회사 Suspension strut fixing structure for car

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016159676A (en) * 2015-02-27 2016-09-05 富士重工業株式会社 Suspension device

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