• 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 hydraulic damper mounted between an axle and an axle in a damping force variable device of an electronically controlled suspension system for a vehicle. In particular, by improving the structure of the hydraulic damper, a relatively light piston and piston rod are connected to the axle, and a heavy cylinder portion Is mounted on the vehicle body to reduce the weight ratio of the axle to the vehicle body, the hydraulic damper is a piston rod 30 and the piston (3) is attached to the inner cylinder (2) and the upper and lower body valve (4) And the rod guide 5 and the oil seal 50 through which the piston rod 30 penetrates are fixed, and a valve through which oil flows is formed in the compression chamber 6, the rebound chamber 7, and the base chamber 8. In this case, another intermediate cylinder (9) fixed to the rod guide (5) and the body valve (4) is disposed between the inner cylinder (2) and the outer cylinder (1). (9) and inside cylinder A flow path 42 through which oil in the second base chamber 8b formed between the (2) flows into the compression chamber 6 and oil in the compression chamber 6 are separated between the outer cylinder 1 and the intermediate cylinder 9. A flow path 44 is formed to flow into the first base chamber 8a, and a hole 90 is installed in the lower portion of the intermediate cylinder 9 to be configured to flow through the hole 90 without resistance of oil.
    公开号:KR19980056934A
    申请号:KR1019960076204
    申请日:1996-12-30
    公开日:1998-09-25
    发明作者:임상호
    申请人:오상수；만도기계 주식회사；
    IPC主号:
    专利说明:

    Damping force variable damper of vehicle electronically controlled suspension
    In the conventional double-acting damper, as shown in FIG. 1, the piston rod 30 and the piston 3 are coupled to an inner cylinder 2 fitted with two cylinders 1 and 2 in a double shape. A body valve 4 is mounted below the inner cylinder 2 and a rod guide 5 and an oil seal 50 are fitted to the piston rod 30.
    The inner cylinder 2 is filled with oil, and only a part of the inner cylinder 2 and the outer cylinder 1 are filled with oil, and the rest is filled with air or other gas.
    The piston 3 divides the inner cylinder 2 into two parts such that the compression chamber 6 is located between the piston 3 and the body valve 4, and the rebound chamber is located between the piston 3 and the rod guide 5. 7), the piston 3 has a valve structure through which oil in the rebound chamber 7 and the compression chamber 6 can flow, and the body valve 4 also includes the compression chamber 6 and the base chamber ( It has a valve structure that can flow oil.
    In the conventional hydraulic damper configured as described above, as the piston 3 reciprocates in the inner cylinder 2, a pressure difference is formed between the three chambers 6, 7 and 8, and oil is supplied to the piston 3 and the body valve 4. Flows through).
    During the rebound stroke, the pressure in the rebound chamber 7 rises and the pressure in the compression chamber 6 decreases so that the oil in the rebound chamber 7 and the base chamber 8 flows into the compression chamber 6. Oil in the compression chamber 6 flows into the rebound chamber 7 and the base chamber 8, where the gas in the base chamber 8 serves as an accumulator. In each of these strokes, damping forces are created by the pressure difference between the rebound chamber and the compression chamber.
    Conventionally, a light piston and a piston rod are connected to the vehicle body, and a heavy cylinder is connected to the axle, thereby causing an excessive load on the axle.
    However, the reduced weight of the axle relative to the body will help the vehicle performance.In the case of single-cylinder dampers, the light piston and piston rod are connected to the axle and the heavy cylinder part is connected to the body. There is a disadvantage that the length is longer.
    The present invention, in order to solve the above-mentioned conventional problems, the relatively light piston and the piston rod is connected to the axle, the heavy cylinder portion is mounted on the vehicle body to reduce the weight ratio of the axle to the vehicle body for that purpose. Doing.
    Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
    1 is an exemplary view of a conventional hydraulic damper.
    2 is an exemplary view of a hydraulic damper to which the present invention is applied.
    * Explanation of symbols for main parts of the drawings
    1, 2, 9: cylinder
    3: piston
    4: Body valve
    5: Road guide
    6: compression chamber
    7: rebound chamber
    8, 8a, 8b: base chamber
    As shown in FIG. 2, another outer cylinder 1 is disposed outside the simple inner cylinder 2, and the inner cylinder 2 is provided with a piston rod 30 and a piston 3, and the inner cylinder 2 is disposed inside the inner cylinder 2. The body valve 4, the rod guide 5 through which the piston rod 30 passes, and the oil seal 50 are fixed to the upper and lower portions of the cylinder 2, and the compression chamber 6 and the rebound chamber 7 and The base chamber 8 is provided with a valve through which oil flows, and another intermediate cylinder fixed to the rod guide 5 and the body valve 4 between the inner cylinder 2 and the outer cylinder 1. (9) is arranged so that the oil in the second base chamber (8b) formed in the body valve (4) between the intermediate cylinder (9) and the inner cylinder (2) flows into the compression chamber (6) and the compression A flow path 44 is formed in which oil in the chamber 6 flows into the first base chamber 8a between the outer cylinder 1 and the intermediate cylinder 9, The hole 90 is provided in the lower part of the intermediate cylinder 9, and it flows to the said hole 90 without receiving the resistance of oil.
    And the inner cylinder (2) and the intermediate cylinder (9) is filled with oil, between the inner cylinder (2) and the outer cylinder (1) is only partially filled with oil, the rest is filled with gas, the first base The gas in the chamber 8a is the same as conventionally assembled under atmospheric pressure or later filled with high-pressure gas.
    The lighter side of the hydraulic damper, that is, the piston 3 and the piston rod 30 is connected to the axle, and the opposite side, that is, the heavy outer cylinder 1 portion is assembled to be mounted to the vehicle body.
    Referring to the operation of the present invention having such a configuration as follows.
    In the present invention configured as described above, in the rebound stroke, the oil of the rebound chamber 7 flows into the compression chamber 6, the oil of the second base chamber 8b flows into the compression chamber 6, and the first base chamber 8a. ) Oil flows to the second base (8b) through the hole (90) of the intermediate cylinder (9).
    In the compression stroke, the oil of the compression chamber 6 flows through the rebound chamber 7 and the body valve 4 through the piston 3 to the first base chamber 8a as in the conventional double-acting damper.
    Therefore, gas does not enter the inner cylinder 2 and the intermediate cylinder 9 at the time of operation, and thus it is possible to sufficiently perform the role and function as a damper.
    As such, the present invention has a merit of reducing the weight ratio of the axle to the body by connecting the light piston and the piston rod to the axle and connecting the heavy cylinder part to the axle with a shorter length than the single-stage damper.
    As described above, according to the present invention, a plurality of first and second base chambers are formed by arranging another intermediate cylinder fixed to the rod guide and the body valve between the inner cylinder and the outer cylinder of the damper. When assembling the light piston and the piston rod is connected to the axle, and the heavy cylinder portion is mounted to be mounted on the vehicle body by reducing the weight ratio of the axle to the vehicle body has the effect of improving the performance of the suspension system.
    The present invention relates to a hydraulic damper mounted between an axle and an axle in a damping force variable device of an electronically controlled suspension system for a vehicle. In particular, by improving the structure of the hydraulic damper, a relatively light piston and piston rod are connected to the axle, and a heavy cylinder portion Is mounted on the body to reduce the weight ratio of the axle to the body.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] Another outer cylinder 1 is disposed outside the inner cylinder 2, and the inner cylinder 2 is provided with a piston rod 30 and a piston 3, and the upper and lower parts of the inner cylinder 2 are disposed. The body valve 4, the rod guide 5 and the oil seal 50 through which the piston rod 30 penetrates are fixed, and the compression chamber 6, the rebound chamber 7 and the base chamber 8 have oil. In the flow valve is provided, between the inner cylinder (2) and the outer cylinder (1) by arranging another intermediate cylinder (9) fixed to the rod guide (5) and the body valve (4) the body valve In (4), the oil of the compression chamber 6 and the flow path 42 through which the oil of the second base chamber 8b formed between the intermediate cylinder 9 and the inner cylinder 2 flows into the compression chamber 6 is outside. A flow path 44 which flows into the first base chamber 8a between the side cylinder 1 and the intermediate cylinder 9 is formed, and is provided at the bottom of the intermediate cylinder 9. 90 is installed so as to flow through the hole 90 without oil resistance, the lighter piston and the piston rod of the hydraulic damper are connected to the axle, and the heavy outer cylinder portion on the opposite side is assembled to the vehicle body. Hydraulic damper for vehicle characterized in that it is mounted to.
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    同族专利:
    公开号 | 公开日
    KR100215369B1|1999-08-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-30|Application filed by 오상수, 만도기계 주식회사
    1996-12-30|Priority to KR1019960076204A
    1998-09-25|Publication of KR19980056934A
    1999-08-16|Application granted
    1999-08-16|Publication of KR100215369B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960076204A|KR100215369B1|1996-12-30|1996-12-30|Damping force variable damper of electronic control suspension for a vehicle|
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