KR20090087282A - Suspension apparatus for vehicle - Google Patents

Suspension apparatus for vehicle Download PDF

Info

Publication number
KR20090087282A
KR20090087282A KR1020080012637A KR20080012637A KR20090087282A KR 20090087282 A KR20090087282 A KR 20090087282A KR 1020080012637 A KR1020080012637 A KR 1020080012637A KR 20080012637 A KR20080012637 A KR 20080012637A KR 20090087282 A KR20090087282 A KR 20090087282A
Authority
KR
South Korea
Prior art keywords
suspension
shock absorber
cylinder
lower spring
spring seat
Prior art date
Application number
KR1020080012637A
Other languages
Korean (ko)
Inventor
김성수
Original Assignee
주식회사 만도
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020080012637A priority Critical patent/KR20090087282A/en
Publication of KR20090087282A publication Critical patent/KR20090087282A/en

Links

Images

Classifications

    • 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
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/43—Fittings, brackets or knuckles
    • 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
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/54—Arrangements for attachment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A suspension apparatus of a vehicle is provided to keep a lower spring sheet in the initial direction regardless of the turn of a vehicle by positioning a bearing at the lower part of a suspension spring. A suspension apparatus of a vehicle is composed of a shock absorber(10), a suspension spring(20), upper and lower spring sheets(31,35), and a bearing member. The shock absorber is installed between a vehicle body and a shaft. The suspension spring is installed outside the shock absorber. The upper and lower spring sheets support the upper and lower parts of the suspension spring. The bearing member is arranged in the lower part of the suspension spring. The bearing member is a first steering bearing(41) which is included in the lower spring sheet and is arranged between the lower spring sheet and the outer circumference surface of the shock absorber cylinder.

Description

Suspension for Vehicles {SUSPENSION APPARATUS FOR VEHICLE}

The present invention relates to a suspension device for a vehicle, and more particularly, a suspension device for a vehicle in which a lower spring pad included in a mounting structure for mounting the suspension device on a vehicle body side can maintain a constant direction irrespective of a change in the direction of a wheel. It is about.

The vehicle suspension device is provided between the vehicle body and the axle to absorb vibration and impact energy transmitted from the road surface while the vehicle is running, and serves to suppress damage to the vehicle body and to improve ride comfort of the vehicle.

To this end, the suspension device for a vehicle includes a suspension spring for mitigating an impact received from a road surface, and a shock absorber for suppressing free vibration of the suspension spring to improve ride comfort. Suspension springs and shock absorbers complement each other to provide a more comfortable ride for the occupant.

More specifically, the suspension spring absorbs the shock caused by the vibration when the vehicle body vibrates up and down greatly by the curvature of the road surface, and the shock absorber provides the suspension spring with resistance to stop the vibration of the suspension spring.

In general, a suspension device for a vehicle is provided with a separate upper spring seat on a bearing-mounted upper mount, and the upper spring seat and a lower spring seat provided on a cylinder of the shock absorber support both ends of the coil spring.

1 shows a schematic side view of a suspension according to the prior art. As shown in FIG. 1, the suspension device according to the prior art includes a shock absorber 10 and a suspension spring 20 provided outside the shock absorber 10.

The shock absorber 10 includes a cylinder 11 and a piston rod 13 into which one side is inserted into the cylinder 11, although not illustrated in FIG. 1, the piston rod 13 in the interior of the cylinder 11. ), Piston valve and rebound spring are installed.

A dust cover (not shown) surrounding the piston rod 13 and the upper portion of the cylinder 11 may be installed at the upper portion of the cylinder 11 to prevent foreign matter from penetrating into the cylinder 11. A bumper stopper (not shown) fitted to the piston rod 13 is installed inside the dust cover to absorb shock load transmitted from the wheel to the vehicle body when the shock absorber 10 is completely compressed.

The shock absorber 10 is usually fixed to the vehicle body side of the upper end of the piston rod 13, the lower end of the cylinder 11 is fixed to the wheel side, for this purpose, the top mount 32 is provided at the upper end of the piston rod 13 The lower end of the absorber 10 is provided with a bracket 17 to be connected to the wheel (not shown).

Suspension spring 20 is to damp the vibration and shock with the shock absorber 10, is formed by winding a thick steel wire in a spiral. When a force from the outside is applied and the shock absorber 10 is compressed, the suspension spring 20 is compressed together, and after being compressed, it is restored by the elastic force.

The upper spring sheet 31 and the lower spring sheet 35 are provided above and below the suspension spring 20 to accommodate and support the suspension spring 20. The lower spring seat 35 is fixedly installed on the outer circumferential surface of the cylinder 11, and the upper spring seat 31 is installed at the end of the piston rod 13.

As shown in FIG. 2, the upper spring seat 31 includes a top mount 32, a bearing 33 and an upper spring pad 34. The lower surface of the top mount 32 is integrally formed with a mounting portion 32a to which the above-described dust cover (not shown) and bumper stopper (not shown) are mounted.

In addition, the bearing 33 generally consists of a plurality of spheres 33a and first and second support portions 33b and 33c provided with the spheres 33a therebetween, but the first support portion 33b is a top. It is fixed to the mount 32 side and the second support part 33c supports the suspension spring 20 through the upper spring pad 34.

At this time, when the driver rotates the steering wheel, that is, the steering wheel, to turn the wheel, the cylinder 11 and the lower spring seat 35 also move to the bracket 17 because the bracket 17 fixed to the wheel side is turned along with the wheel. Is wheeled with). As described above, in order to prevent the suspension spring 20 from twisting as the lower spring seat 35 pivots, the upper spring seat 31 includes a bearing 33.

However, in the related art, as the direction of the wheel is turned when the driver handles the wheel as described above, the strut structure such as the cylinder 11 and the lower spring seat 35 included in the suspension is turned together with the wheel. Since the direction of the force supporting the vehicle is changed, there is a problem that the counter side load value, which is adopted as the optimum value at the beginning of the design, is changed depending on the direction of the wheel.

That is, in the related art, since the direction of the lower spring seat 35, which is a support for supporting the reaction force, is constrained and changed in the wheel, there is a problem that the direction of the reaction force of the vehicle support also changes. The changed vehicle support reaction force does not reproduce the counter side rod value, which is the optimal design value, and the piston rod 13 and the cylinder 11 do not lie in a straight line. It is applied to a road guide (not shown). As a result, the endurance life of the shock absorber may be shortened and damage to the sealing portion may occur.

SUMMARY OF THE INVENTION The present invention has been made to solve these conventional problems, and an object of the present invention is to place the bearing under the suspension spring so that the lower spring seat can maintain the original direction without being dependent on the turning of the wheel even if the wheel is turned. It is to provide a vehicle suspension.

According to the present invention for achieving the above object, the shock absorber is provided between the vehicle body and the axle, the suspension spring is provided on the outside of the shock absorber, and the upper and lower spring seat for supporting the upper and lower portions of the suspension spring A vehicle suspension comprising: a vehicle suspension comprising a bearing means disposed below the suspension spring so that the lower spring seat can maintain the original direction without being dependent on the wheel's turning even if the wheel is turned. An apparatus is provided.

The bearing means may be a first steering bearing included in the lower spring seat and disposed between the lower spring seat and the cylinder outer circumferential surface of the shock absorber.

The lower spring seat may include a first support part formed to be supported on the upper surface of the cylinder of the shock absorber, and the bearing means is included in the lower spring seat, and an upper end portion of the first support part and the cylinder It may be a second steering bearing interposed between the upper surface of the.

The lower spring sheet may include a second support portion formed to be supported on the upper surface of the cylinder of the shock absorber, and the bearing means may include a convex portion formed on the upper surface of the cylinder and the convex portion. It may include an upper locking portion formed in the second support.

The bearing means may be a third steering bearing disposed between a cylinder bottom outer peripheral surface of the shock absorber and a knuckle arm extending from the wheel.

According to the present invention as described above, by placing the bearing in the lower portion of the suspension spring, even if the wheel is rotated, there can be provided a vehicle suspension device in which the lower spring seat can maintain the original direction without being dependent on the turning of the wheel.

EMBODIMENT OF THE INVENTION Hereinafter, the vehicle suspension apparatus which concerns on preferred embodiment of this invention is demonstrated in detail with reference to drawings. 3 to 6 show a schematic side view of a vehicle suspension according to the first to third preferred embodiments of the present invention. In the drawings, the same member numbers are assigned to the same and similar members for convenience of explanation.

As shown in Figs. 3 to 6, the vehicle suspension apparatus according to the preferred embodiment of the present invention, as in the prior art, the shock absorber 10 and the suspension spring 20 provided on the outside of the shock absorber 10. It is made, including.

In addition, the shock absorber 10 includes a cylinder 11 and a piston rod 13 into which one side is inserted into the cylinder 11, and although not shown in the drawing, the piston rod ( 13, a piston valve and the like are installed.

A top mount 32 is provided at an upper end of the piston rod 13, and a bracket 17 is provided at a lower end of the shock absorber 10 so as to be connected to a wheel (not shown). The upper spring sheet 31 and the lower spring sheet 35 are provided above and below the suspension spring 20 to accommodate and support the suspension spring 20.

Conventionally, the upper spring seat 31 provided at the end of the piston rod 13 includes a bearing 33 (see FIGS. 1 and 2), but according to the present invention, even if the wheel is turned, the lower spring seat 35 The bearing is configured to be disposed under the suspension spring 20 so that the first direction can be maintained without being dependent on the turning of the wheel.

Referring to FIG. 3, the vehicle suspension apparatus according to the first preferred embodiment of the present invention is configured such that a first steering bearing 41 is included in the lower spring seat 35. That is, since the first steering bearing 41 is disposed between the lower spring seat 35 and the outer circumferential surface of the cylinder 11, the lower spring seat 35 is in a constant direction irrespective of the turning of the cylinder 11 that interlocks with the wheels. It can be maintained.

As the first steering bearing 41, any bearing structure can be used as long as the lower spring seat 35 can freely rotate with respect to the cylinder 11 while supporting the load of the vehicle body transmitted through the suspension spring 20. .

Referring to FIG. 4, the vehicle suspension apparatus according to the second preferred embodiment of the present invention is configured such that the second steering bearing 42 is included in the lower spring seat 35 as in the first embodiment described above. . In contrast, in the first embodiment, the first steering bearing 41 is disposed between the lower spring seat 35 and the outer circumferential surface of the cylinder 11, but the second embodiment has the following difference.

The vehicle suspension device according to the second embodiment includes a lower spring seat 35 in which the first support part 45 is cylindrically convex so as to be supported on the upper surface of the cylinder 11 of the shock absorber, and the lower spring seat ( And a second steering bearing 42 interposed between the upper end of the first support 45 of 35 and the upper surface of the cylinder 11. Accordingly, even in the case of the vehicle suspension device according to the second embodiment, the lower spring seat 35 can maintain a constant direction irrespective of the turning of the cylinder 11 interlocking with the wheel.

As the second steering bearing 42, any bearing structure can be used as long as the lower spring seat 35 can rotate freely with respect to the cylinder 11 while supporting the load of the vehicle body transmitted through the suspension spring 20. Can be.

5 shows a suspension for a vehicle according to a modification of the second preferred embodiment of the present invention. In the vehicle suspension shown in FIG. 5, similar to the above-described second embodiment, the lower spring seat (2) is formed in which the second support portion (46) is cylindrically convex so as to be supported on the upper surface of the cylinder (11) of the shock absorber. 35).

However, the second support portion 46 of the lower spring sheet 35 has an upper locking portion 46a that is bent to have a hook shape when viewed in cross section, and an upper locking portion 46a is provided on the upper surface of the cylinder 11. The convex part 11a is formed so that it may be caught. It is preferable that the convex part 11a is formed circularly on the upper surface of a cylinder.

The upper locking portion 46a does not necessarily have to be formed in a circular shape as long as it can support the load transmitted from the vehicle body. A friction surface between the upper locking portion 46a and the convex portion 11a may be interposed with a material having a low friction coefficient or coated with a lubricating material.

Referring to FIG. 6, the vehicle suspension apparatus according to the third preferred embodiment of the present invention is linked to the wheel by changing the mounting position of the bearing from the upper portion to the lower portion of the suspension spring 20, as in the first embodiment described above. Regardless of the turning of the cylinder 11, the lower spring seat 35 has a structure capable of maintaining a constant direction.

However, in the first embodiment, the suspension device for a vehicle according to the third embodiment includes a cylinder of the shock absorber, whereas the first steering bearing 41 is disposed between the lower spring seat 35 and the outer circumferential surface of the cylinder 11. 11) The third steering bearing 43 is disposed between the lower outer circumferential surface and the knuckle arm 3 extending from the wheel 1. As a result, irrespective of the turning of the cylinder 11 interlocking with the wheel, not only the lower spring seat 35 but the entire shock absorber 10 can maintain a constant direction.

As the third steering bearing 43, any bearing structure can be used as long as it supports the load of the vehicle body transmitted through the suspension spring 20 and the cylinder 11 of the shock absorber can rotate freely with respect to the knuckle arm 3. Can be.

In the third embodiment, the bracket 17 attached to the lower portion of the cylinder 11 and coupling the shock absorber 10 with the knuckle arm 3 on the wheel side can be omitted.

As described above, the vehicle suspension apparatus according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited to the embodiments and drawings described above, and in the technical field to which the present invention pertains within the claims. Of course, various modifications and variations can be made by those skilled in the art.

1 is a side view schematically showing a suspension according to the prior art;

2 is a cross-sectional view of an essential part showing the upper spring sheet of the suspension according to the prior art;

3 is a side view schematically showing a suspension device according to a first embodiment of the present invention;

4 is a side view schematically showing a suspension device according to a second embodiment of the present invention;

5 is a side view schematically showing a suspension device according to a modification of the second embodiment of the invention, and

6 is a side view schematically showing a suspension device according to a third embodiment of the present invention.

<Brief Description of Major Codes in Drawings>

10: shock absorber 11: cylinder

11a: convex 17: bracket

20: suspension spring 31: upper spring seat

35: lower spring seat 41 to 43: first to third steering bearing

45: first support part 46: second support part

46a: top catch

Claims (5)

A vehicle suspension comprising a shock absorber provided between a vehicle body and an axle, a suspension spring provided outside of the shock absorber, and upper and lower spring seats supporting upper and lower portions of the suspension spring. And a bearing means disposed under the suspension spring so that the lower spring seat can maintain the original direction without being dependent on the turning of the wheel even if the wheel is turned. The method according to claim 1, And the bearing means is a first steering bearing included in the lower spring seat and disposed between the lower spring seat and the cylinder outer circumferential surface of the shock absorber. The method according to claim 1, The lower spring seat includes a first support formed to be supported on the upper surface of the cylinder of the shock absorber, And the bearing means is a second steering bearing included in the lower spring seat and interposed between an upper end portion of the first support portion and an upper surface of the cylinder. The method according to claim 1, The lower spring seat includes a second support formed to be supported on the upper surface of the cylinder of the shock absorber, The bearing means includes a convex portion formed on the upper surface of the cylinder and an upper suspension portion formed on the second support portion to be caught by the convex portion. The method according to claim 1, And said bearing means is a third steering bearing disposed between a cylinder bottom outer peripheral surface of said shock absorber and a knuckle arm extending from a wheel.
KR1020080012637A 2008-02-12 2008-02-12 Suspension apparatus for vehicle KR20090087282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080012637A KR20090087282A (en) 2008-02-12 2008-02-12 Suspension apparatus for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080012637A KR20090087282A (en) 2008-02-12 2008-02-12 Suspension apparatus for vehicle

Publications (1)

Publication Number Publication Date
KR20090087282A true KR20090087282A (en) 2009-08-17

Family

ID=41206364

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080012637A KR20090087282A (en) 2008-02-12 2008-02-12 Suspension apparatus for vehicle

Country Status (1)

Country Link
KR (1) KR20090087282A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160069312A (en) * 2014-12-08 2016-06-16 현대자동차주식회사 Strut assambly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160069312A (en) * 2014-12-08 2016-06-16 현대자동차주식회사 Strut assambly

Similar Documents

Publication Publication Date Title
JP5781155B2 (en) Post assembly with multi-piece spring seat
KR20130135492A (en) Suspension apparatus for vehicle and lower spring seat used for the apparatus
GB2418002A (en) A strut assembly including a compression spring of non-linear shape
KR20120078871A (en) Suspension for vehicle
KR20090087282A (en) Suspension apparatus for vehicle
KR101154776B1 (en) Rear suspension system for vehicle
KR20080101120A (en) Vehicle suspension apparatus and bearing used for the same
KR100778079B1 (en) Suspension&#39;s Strut
KR102658038B1 (en) Insulator and suspension apparatus having the same
KR101357655B1 (en) Suspension apparatus for vehicle and lower spring seat used for the apparatus
KR101283779B1 (en) Shock absorber
KR100616010B1 (en) Strut assembly for automobile
KR20100007181A (en) Spring upper seat for strut assembly
JP6297077B2 (en) Vehicle suspension system
KR20100058967A (en) Suspension system for vehicle
KR20120030850A (en) Top mount of air suspension system
KR20080042345A (en) Automobile suspension
KR20110094938A (en) Bearing of a suspension apparatus for vehicle
KR100428132B1 (en) strut assembly of suspension
KR20130005358A (en) Air strut of air suspension for vehicle
KR20090006346A (en) Bearing of a suspension apparatus for vehicle
KR100766005B1 (en) Suspension Device
KR100853501B1 (en) Suspension apparatus for vehicle and lower spring seat used for the same
KR20080023557A (en) Strut mount structure of suspension for automobile
JP2009255720A (en) Damper mounting structure

Legal Events

Date Code Title Description
A201 Request for examination
E601 Decision to refuse application