• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a shock absorber of an automobile, wherein a serial cylinder (21) having a first piston (24) and a second piston (25) of medium diameter for compressing oil is formed in the lower part of the shock absorber (10). A connecting cylinder 23 having a third piston 27 having a small diameter is formed on the side of the serial cylinder 21. The connecting cylinder 23 is connected to the serial cylinder 21 via the connecting cylinder 23. An auxiliary shock absorber 20 made of a gas cylinder 23 having a large diameter fourth piston 28 connected to a rod 29 to a three-piston 27 is installed. As the four pistons 27 and 28 move, the gas layer is compressed to absorb shocks. Therefore, even when the micro-springs in which the coil springs 15 are not compressed generate shocks, shocks are absorbed and are not transmitted to the vehicle body through the coil springs 15, so that the riding comfort is improved.
    公开号:KR20020030403A
    申请号:KR1020000061019
    申请日:2000-10-17
    公开日:2002-04-25
    发明作者:김재철
    申请人:이계안；현대자동차주식회사；
    IPC主号:
    专利说明:

    Shock absorber for vehicle
    [12] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to shock absorbers of automobiles, and more particularly, to shock absorbers of automobiles that are capable of effectively absorbing small impacts and improving riding comfort.
    [13] Generally, a shock absorber is installed between an upper suspension arm and a lower suspension arm in a vehicle suspension system to absorb shocks transmitted from a wheel to a vehicle body when driving by using gas pressure and hydraulic pressure.
    [14] As shown in FIG. 1, the shock absorber includes an auxiliary piston 12 and a main piston 13 built into the cylindrical main cylinder 11, and a rod 14 of the main piston 13 positioned at the lower side of the shock absorber is main. It extends to the outside of the cylinder 11 is fixed to the lower suspension arm, the space between the upper space of the auxiliary piston 12 and the space between the auxiliary piston 12 and the main piston 13 is filled with gas and oil, respectively consist of.
    [15] In addition, the shock absorber 10 is located inside the coil spring 15, the upper end and the lower end of which is fixed to the upper suspension arm and the lower suspension arm, respectively.
    [16] Therefore, when vibration (shock) occurs in the vertical direction while driving, the coil spring 15 is compressed and the gas and oil of the shock absorber 10 are compressed to absorb shocks.
    [17] However, in the above structure in which the upper and lower ends of the shock absorber 10 are fixed to the upper suspension arm and the lower suspension arm in the same manner as the coil spring 15, a small magnitude of impact that cannot deform the coil spring 15 occurs. When the generated shock is not absorbed and transmitted to the vehicle body through the coil spring 15, there is a problem that the ride comfort is reduced.
    [18] Accordingly, the present invention has been made to solve the above problems, even if the small vibration of the magnitude smaller than the minimum deformation force of the coil spring (minimum force that can deform the coil spring) occurs, the shock is absorbed in the vehicle The purpose of the present invention is to provide a shock absorber of a vehicle that can be improved so that the ride comfort can be improved.
    [1] 1 is a cross-sectional view showing a shock absorber of a conventional vehicle,
    [2] 2 is a cross-sectional view showing a shock absorber of a vehicle according to the present invention and an enlarged main part thereof.
    [3] * Description of the symbols for the main parts of the drawings *
    [4] 10: shock absorber, 11: main cylinder,
    [5] 12: auxiliary piston, 13: main piston,
    [6] 14: rod, 15: coil spring,
    [7] 20: auxiliary shock absorber, 21: main cylinder,
    [8] 22: connector, 23: sub-cylinder,
    [9] 24: first piston, 25: second piston,
    [10] 26: rod, 27: the third piston,
    [11] 28: 4th piston, 29: rod.
    [19] In order to achieve the above object, the present invention has a subsidiary shock absorber installed at the lower portion of the shock absorber, which is fixed to the first piston and the lower suspension arm directly connected to the rod of the absorber. A series cylinder having a second piston connected to the rod, a connecting cylinder formed at the central side of the series cylinder and having a third piston, and connected to the series cylinder via the connecting cylinder and interlocked with a third piston. It consists of a gas cylinder with four pistons.
    [20] Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.
    [21] 2 is a cross-sectional view of the shock absorber for automobiles according to the present invention and an enlarged main portion thereof, in which the auxiliary piston 12 and the main piston 13 are embedded in the cylindrical cylinder 11, and the main piston is located below. Rod 14 of (13) extends to the outside of the cylinder 11, the space above the auxiliary piston 12 and the space between the auxiliary piston 12 and the main piston 13 is filled with gas and oil, respectively It consists of a structure, and consists of a structure in which the secondary shock absorber 20 for the micro shock absorption is installed in the lower portion of the shock absorber 10 is located inside the coil spring 15 fixed to the upper suspension arm.
    [22] The auxiliary shock absorber 20 is connected to the series cylinder 21 via a series cylinder 21, a connecting cylinder 22 formed at an intermediate side of the series cylinder 21, and the connecting cylinder 22. It consists of the gas cylinder 23 which becomes.
    [23] The series cylinder 21 is provided with a first piston 24 and a second piston 25, the first piston 24 is located at the top and connected to the rod 14 of the shock absorber 10, The second piston 25 is located at the bottom and its rod 26 extends outward of the series cylinder 21 to be fixed to the lower suspension arm.
    [24] In addition, the connecting cylinder 22 and the gas cylinder 23 are provided with a third piston 27 and a fourth piston 28, respectively, and the third piston 27 and the fourth piston 28 have one rod. It is linked to (29) and interlocked.
    [25] In addition, gas is filled in the upper space of the first piston 24 and the lower space of the second piston 25 in the series cylinder 21, and between the first piston 24 and the second piston 25. The oil is filled, and the gas is filled in the space between the third piston 27 and the fourth piston 28 and the right space of the fourth piston 28, but the third piston 27 and the fourth piston 28 are filled with gas. The space between the gas is filled with a low pressure gas, the right space of the fourth piston 28 is filled with a gas of a medium pressure.
    [26] Meanwhile, the first and second pistons 24 and 25 have the same diameter, the third piston 27 is smaller than this, and the diameter of the fourth piston 28 is equal to the first and second pistons 24 and 25. It is larger (3rd piston <1st, 2nd piston <4th piston), and the order of the size is not changed, and the diameter ratio can be appropriately changed depending on the weight of the vehicle and the position of the shock absorber (front side, rear side). .
    [27] The operation and effects of the present invention will now be described.
    [28] Even if a small shock such that the coil spring 15 is not compressed occurs, this force is transmitted to the first and second pistons 24 and 25 of the series cylinder 21 through the rods 14 and 26, The oil layer between the pistons is pressurized.
    [29] When the oil layer is pressurized, according to Pascal's principle, P 1 / A 1 (or P 2 / A 2 ) = P 3 / A 3, so the third piston 27 has an area ratio with the first and second pistons 24 and 25. Since a small pressure is applied and A 1 l 1 (or A 2 l 2 ) = A 3 l 3 , even if the movement distance of the first and second pistons 24 and 25 due to the micro impact is very small, the third piston 27 Since the travel distance of is long, when the oil layer of the serial cylinder 21 is pressed by the micro-impact, even if the first and second pistons 24 and 25 are hardly moved, the three pistons 27 push back and the fourth piston ( 28) is pushed by the same distance as their movement distance, so that the fourth piston 28 can absorb the shock while pressing the gas layer.
    [30] That is, the third piston 27 which can be operated even when a small impact occurs and the fourth piston 28 which compresses the gas layer while being interlocked with the third piston 27 can absorb the micro impact.
    [31] Here, if the gas cylinder 23, which acts as a small shock absorber, is directly connected to the lower part of the (main) shock absorber 10, it is easy to think that the small shock can be absorbed. Since the gas layer of the dragon is always fully compressed and cannot absorb the shock, a series cylinder 21 is placed between the shock absorber 10 and the gas cylinder 23 to withstand the load of the vehicle and to add a minute When an impact occurs, it is to be delivered to the gas cylinder 23, the fourth piston 28 of the gas cylinder 23 reaches the top dead center, the load more than the degree that can not absorb any more impact occurs In this case, the coil spring 15 is compressed and absorbed by the shock absorber 10.
    [32] On the other hand, the left and right of the fourth piston 28 is filled with the low-pressure gas and the medium-pressure gas, respectively, so that when the shock disappears, the fourth piston 28 and the third piston 27 linked thereto by the pressure of the medium-high pressure gas layer. ) Is able to return to the original position.
    [33] As described above, according to the present invention, since the auxiliary shock absorber for micro shock absorption is provided in the lower part of the shock absorber, even though the coil spring is not compressed, the micro shock is not transmitted to the vehicle body through the coil spring, thereby improving the riding comfort. .
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] The upper end is fixed to the upper suspension arm and the lower end of the main piston (13) rod 14 is fixed to the lower suspension arm, the upper and lower end is located inside the coil spring 15 is fixed to the lower suspension arm In shock absorber of car,
    Between the lower end of the rod 14 and the lower suspension arm, the micro-absorption auxiliary shock absorber 20 for absorbing impact force smaller than the minimum deformation force of the coil spring 15 is installed. Absorber.
    [2" claim-type="Currently amended] 2. The auxiliary piston (20) according to claim 1, wherein the auxiliary shock absorber (20) is connected to a first piston (24) connected to the rod (14) of the shock absorber (10) and a rod (26) fixed to the lower arm (25). And a connecting cylinder (22) having a third piston (27) having a diameter smaller than the first and second pistons (24, 25) and connected to the intermediate side of the series cylinder (21). And a connection cylinder 22 to the series cylinder 21 and connected to the rod 29 of the third piston 27 and having a diameter larger than that of the first and second pistons 24 and 25. It consists of a gas cylinder 23 having a fourth piston 28, gas is filled in the upper portion of the first piston 24 and the lower portion of the second piston 25, the first and second pistons (24, 25) Oil is filled between the, the low-pressure gas is filled between the third piston 27 and the fourth piston 28, and the medium pressure is filled in the right space of the fourth piston (28). Who The shock absorber of the car.
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    同族专利:
    公开号 | 公开日
    KR100391593B1|2003-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-10-17|Application filed by 이계안, 현대자동차주식회사
    2000-10-17|Priority to KR20000061019A
    2002-04-25|Publication of KR20020030403A
    2003-07-16|Application granted
    2003-07-16|Publication of KR100391593B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR20000061019A|KR100391593B1|2000-10-17|2000-10-17|a shock absorber for vehicle|
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