KR20170065743A - Damper device of vehicle - Google Patents

Damper device of vehicle Download PDF

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Publication number
KR20170065743A
KR20170065743A KR1020150171813A KR20150171813A KR20170065743A KR 20170065743 A KR20170065743 A KR 20170065743A KR 1020150171813 A KR1020150171813 A KR 1020150171813A KR 20150171813 A KR20150171813 A KR 20150171813A KR 20170065743 A KR20170065743 A KR 20170065743A
Authority
KR
South Korea
Prior art keywords
piston
piston rod
fixed
tube
tube portion
Prior art date
Application number
KR1020150171813A
Other languages
Korean (ko)
Inventor
강병구
김종민
Original Assignee
현대자동차주식회사
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 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020150171813A priority Critical patent/KR20170065743A/en
Publication of KR20170065743A publication Critical patent/KR20170065743A/en

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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
    • B60G15/067—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
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • 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
    • 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
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/129—Damper mount on wheel suspension or knuckle
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

According to the present invention, there is provided a piston unit having a working fluid therein; And a tube portion which is located below the piston portion and has a piston rod portion that reciprocates up and down inside the piston portion when the piston portion reciprocates, and a tube portion integrally coupled to the knuckle of the vehicle and fixed in position. do.

Description

[0001] DAMPER DEVICE OF VEHICLE [0002]

The present invention relates to a vehicular damper device for securing tightening rigidity when a damper is applied and simplifying the structure.

Suspension system is a device that connects the axle and the frame and absorbs shocks and vibrations received from the road surface during driving to improve ride comfort and stability of the vehicle. This is typically a stabilizer bar and a chassis And a shock absorber that improves the ride comfort by absorbing natural vibration of the spring and the chassis spring.

The double shock absorber (hereinafter referred to as "damper") absorbs the natural vibration generated by the impact of the spring according to the state of the road surface when the vehicle is traveling, so that the vibration of the spring is quickly attenuated, It is a device that converts energy into heat energy.

More specifically, when the vehicle travels along the road surface, the natural vibration transmitted to the vehicle body along with the bending of the road surface is absorbed by the upward and downward movement of the spring, and the inherent vibration of the spring generated at this time is absorbed by the damper, To come.

In recent years, a high-performance vehicle is a McPherson-type damper, and a monotube damper is applied to realize stable damping characteristics and quick response when a damper is applied.

These monotube dampers have higher gas pressure than the twin-tube dampers and are more responsive when the stroke is changed. There is no oil reservoir bypass, which makes it possible to achieve a stable damping characteristic curve. However, in the case of the McPherson type, it is difficult to apply the monotube damper due to the unevenness of roundness due to thermal deformation during welding of the spring lower seat and the step link mounting bracket. In addition, a high-performance vehicle of the McPherson type employs an upside-down method in which a separate tube is applied to the outside and the direction of the piston rod is inverted to apply a monotube. However, this increases the number of components, There are disadvantages.

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 10-1999-0019860 A (Mar. 25, 1999)

It is an object of the present invention to provide a vehicular damper device for reducing the weight of a knuckle for a vehicle by eliminating the mounting of the damper and increasing the rigidity of the axle by optimizing the structure.

According to an aspect of the present invention, there is provided a vehicular damper device including: a piston having a working fluid therein; And a tube portion located below the piston portion and having a piston rod portion that reciprocates up and down inside the piston portion when the piston portion reciprocates, and a tube portion integrally coupled to the knuckle of the vehicle and fixed in position.

The free piston is provided with oil and gas as working fluid inside the piston, and separates oil and gas from each other inside the piston.

The tube portion is formed in a hollow cylindrical shape, and has a closed end portion for closing the lower end and an open end portion for opening the upper end, and the piston portion is connected so as to reciprocate upward and downward through the open end portion of the tube portion.

The piston rod portion has a lower end fixed to the closed end of the tube portion, an upper end extending linearly toward the open end, and a piston valve accommodated in the piston portion at an upper end thereof.

The lower end of the piston rod part protrudes downward through the closed end of the tube part, and the protruded lower end of the piston rod part is coupled and fixed to the closed end part.

And the piston rod portion is provided with a bending prevention member for wrapping the stop in the longitudinal direction.

The knuckle is formed with a fixed end portion integrally coupled with a tube portion, and the fixed end portion is hollow formed with a space therein.

And the inner space of the fixed end of the knuckle and the space of the tube portion in which the piston rod is provided are mutually shared.

According to the vehicular damper apparatus having the above-described structure, the mounting for the vehicle knuckle is eliminated by mounting the damper, and the rigidity of the axle is increased by optimizing the structure.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a damper device for a vehicle according to an embodiment of the present invention. Fig.
2 is a view for explaining a damper device for a vehicle shown in Fig. 1; Fig.

Hereinafter, a vehicle damper device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a view showing a damper device for a vehicle according to an embodiment of the present invention, and FIG. 2 is a view for explaining a damper device for a vehicle shown in FIG.

1, the damper device for a vehicle according to the present invention includes a piston 100 having a working fluid 120 therein; A piston rod part 220 is provided below the piston part 100 and reciprocates up and down inside the piston part 100 when reciprocating the piston part 100. The piston rod part 220 is integrally formed with the knuckle 300 of the vehicle And a tube portion 200 to which the position is fixed.

That is, in the present invention, the piston 100 having the working fluid 120 therein is located on the upper side of the tube portion 200, and the tube portion 200 is integrally coupled to the knuckle 300 of the vehicle And the piston rod portion 220 provided on the tube portion 200 when the piston portion 100 is moved in the up and down direction due to the impact or vibration generated from the road surface during running the vehicle, So that shock and vibration are absorbed.

Since the tube portion 200 is integrally coupled to the knuckle 300 of the vehicle, a process of separately installing a conventional damper is eliminated, and a roundness unevenness caused by thermal deformation during welding is eliminated, and wheel alignment The occurrence of a deviation can be prevented.

The oil 122 and the gas 124 are provided as the working fluid 120 in the piston 100 and the oil 122 and the gas 124 are supplied to the inside of the piston 100, And a monotube damper provided with a free piston 140 for dividing the piston portion 100. The piston portion 100 is located on the upper side and the piston rod portion 220 provided on the tube portion 200 is reversed downward. Thus, stable damping characteristics can be realized and quick response can be ensured, which is applicable to high-performance vehicles.

2, the tube unit 200 has a hollow cylindrical shape, and includes a closed end 240 for closing the lower end and an open end 260 for opening the upper end. And the piston part 100 may be connected to be vertically reciprocable through the open end 260 of the tube part 200. [

The piston rod portion 220 is fixed to the closed end portion 240 formed at the lower end of the tube portion 200. The piston rod portion 220 is fixed to the closed end portion 240 formed at the lower end of the tube portion 200, Can be installed. The upper end of the tube part 200 is opened through the open end 260 so that the piston part 100 can be inserted from the upper side of the tube part 200 and connected to receive the piston rod part 220 therein. The piston part 100 inserted through the open end part 260 is inserted into the piston rod part 220 fixed to the closed end part 240 and inserted into the tube part 200, The piston portion 100 can be moved up and down to be absorbed.

The lower end of the piston rod 220 is fixed to the closed end 240 of the tube 200 and the upper end extends linearly toward the open end 260. The upper end of the piston rod 220 And a piston valve 222 accommodated in the interior of the cylinder block 100. The lower end of the piston rod portion 220 is firmly fixed to the closed end portion 240 of the tube portion 200 so that the piston portion 100 can be maintained in its downward position even when the piston portion 100 is pressed down, The working fluid 120 inside the piston 100 can be sufficiently compressed by the piston valve 222 during the movement.

Particularly, the lower end of the piston rod 220 protrudes downward through the closed end 240 of the tube 200, and the protruded lower end of the piston rod 220 is fixedly coupled to the closed end 240, Can be more firmly fixed to the closed end portion 240 of the tube portion 200.

In addition, the piston rod 220 may be provided with a bending prevention member 224 which surrounds the suspension in the longitudinal direction. By providing the bending prevention member 224 surrounding the suspension of the piston rod 220 in this way, the load is concentrated on the piston rod 220 when the piston 100 is lowered and the piston rod 220 is pressed It is possible to increase the durability by adding rigidity to the portion.

2, the knuckle 300 is formed with a fixed end 320 to which the tube 200 is integrally coupled, and the fixed end 320 is hollow with a space therebetween .

In other words, it is integrally coupled with the tube portion 200 through the fixed end 320 of the knuckle 300. In the case of the fixed end 320, the hollow portion is formed to have a hollow space therein. Thus, the rigidity is secured by increasing the cross- can do.

The inner space 322 of the fixed end 320 of the knuckle 300 and the space 226 in which the piston rod 220 is provided are mutually shared, The weight can be reduced by deleting a part of the part 200. [ In addition, the space 322 of the knuckle 300 and the space 226 of the tube portion 200 are combined to secure a larger cross-sectional area, thereby further increasing the lateral stiffness of the vehicle.

According to the vehicular damper device having the above-described structure, the mounting according to the installation of the damper is eliminated in the vehicle knuckle, and the stiffness of the axle is increased through weight reduction and structure optimization.

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: piston part 120: working fluid
140: free piston 200: tube part
220: piston rod part 222: piston valve
224: bending prevention member 240: closed end
260: open end 300: knuckle
320: fixed end

Claims (8)

A piston portion having a working fluid therein; And
And a tube portion that is located below the piston portion and has a piston rod portion that reciprocates up and down inside the piston portion when reciprocating the piston portion and is integrally coupled to the knuckle of the vehicle and fixed in position. The method according to claim 1,
Wherein the piston is provided with a free piston in which oil and gas are provided as a working fluid and which separates oil and gas from each other inside the piston portion. The method according to claim 1,
Wherein the tube portion is formed in a hollow cylindrical shape and has a closed end for closing the lower end and an open end for opening the upper end,
And the piston portion is connected to be vertically reciprocable through the open end of the tube portion. The method of claim 3,
Wherein the piston rod portion has a lower end fixed to the closed end of the tube portion, an upper end extending linearly toward the open end, and a piston valve accommodated in the piston portion at an upper end thereof. The method of claim 4,
Wherein a lower end of the piston rod portion protrudes downward through a closed end of the tube portion, and a protruded lower end of the piston rod portion is coupled and fixed to the closed end portion. The method of claim 3,
Wherein the piston rod portion is provided with a bending preventive member for wrapping the stop in the longitudinal direction. The method according to claim 1,
Wherein the knuckle has a fixed end formed integrally with the tube portion, and the fixed end portion is hollowed with a space therein. The method of claim 7,
Wherein a space inside the fixed end of the knuckle and a space in which the piston rod is provided in the tube portion are mutually shared.
KR1020150171813A 2015-12-03 2015-12-03 Damper device of vehicle KR20170065743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150171813A KR20170065743A (en) 2015-12-03 2015-12-03 Damper device of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150171813A KR20170065743A (en) 2015-12-03 2015-12-03 Damper device of vehicle

Publications (1)

Publication Number Publication Date
KR20170065743A true KR20170065743A (en) 2017-06-14

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ID=59217894

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150171813A KR20170065743A (en) 2015-12-03 2015-12-03 Damper device of vehicle

Country Status (1)

Country Link
KR (1) KR20170065743A (en)

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