KR20050023899A - leaf spring suspension - Google Patents

leaf spring suspension Download PDF

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Publication number
KR20050023899A
KR20050023899A KR1020030061462A KR20030061462A KR20050023899A KR 20050023899 A KR20050023899 A KR 20050023899A KR 1020030061462 A KR1020030061462 A KR 1020030061462A KR 20030061462 A KR20030061462 A KR 20030061462A KR 20050023899 A KR20050023899 A KR 20050023899A
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KR
South Korea
Prior art keywords
shackle
leaf spring
support block
elastic
elastic force
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Application number
KR1020030061462A
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Korean (ko)
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KR100527730B1 (en
Inventor
이기연
Original Assignee
기아자동차주식회사
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Priority to KR10-2003-0061462A priority Critical patent/KR100527730B1/en
Publication of KR20050023899A publication Critical patent/KR20050023899A/en
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Publication of KR100527730B1 publication Critical patent/KR100527730B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • B60G2204/121—Mounting of leaf springs
    • 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
    • B60G2204/124—Mounting of coil springs
    • 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
    • B60G2206/70—Materials used in suspensions
    • B60G2206/73—Rubber; Elastomers

Abstract

PURPOSE: A leaf spring suspension is provided to improve riding comfort and to secure proper vibration absorption and anti-vibration effect by moving a shackle of a leaf spring and supplying elastic bearing power for light load with a small elastic deforming range of the leaf spring. CONSTITUTION: A leaf spring suspension is composed of an elastic force supply unit deformed by a rotary motion that a lower end of a shackle is moved up, and mounted between the shackle and a vehicle body to supply elastic bearing power and a stopper(3) for limiting the deformation degree of the elastic force supply unit caused by the lift of the lower end of the shackle. The elastic force supply unit comprises a support block(5) contacted with the lower end of the shackle; a plate spring(7) strained by the rotary motion for the lower end of the shackle to hold the support block and to generate elastic bearing power; and a support bracket(9) for connecting and fixing the plate spring to the vehicle body.

Description

리프스프링 현가장치{leaf spring suspension}Leaf spring suspension {leaf spring suspension}

본 발명은 차량의 현가장치에 사용되는 리프스프링에 관한 것으로서, 보다 상세하게는 리프스프링 현가장치에서 제공하는 탄성력을 가변시킬 수 있도록 하는 기술에 관한 것이다.The present invention relates to a leaf spring used in the suspension of a vehicle, and more particularly, to a technique for varying the elastic force provided by the leaf spring suspension.

리프스프링은 띠모양으로 형성된 스프링강판을 여러겹 포개서 형성한 것으로 포개진 판재 사이의 마찰에 의해 스프링의 특성이 결정된다. 상기한 바와 같은 리프스프링은 통상 일단의 스프링아이는 차체에 직접 연결되고 타단의 스프링아이는 섀클(shackle)에 의해 차체에 연결되도록 되어 있다.The leaf spring is formed by stacking a plurality of spring steel sheets formed in a strip shape, and the characteristics of the spring are determined by the friction between the stacked sheets. As described above, the leaf spring is generally configured such that one end of the spring eye is directly connected to the vehicle body and the other end of the spring eye is connected to the vehicle body by a shackle.

따라서, 현가장치에 작용하는 부하가 작은 경우에는 리프스프링의 탄성변형이 발생하기 이전에 섀클의 회전운동이 발생하고, 이러한 섀클의 회전운동 범위를 넘어서는 부하에 대해서만 리프스프링의 탄성력이 발휘되도록 되어 있다.Therefore, when the load acting on the suspension device is small, the shackle's rotational motion occurs before the elastic deformation of the leaf spring occurs, and the elastic force of the leaf spring is exerted only on the load beyond the range of the rotational motion of the shackle. .

여기서, 섀클의 회전운동이 이루어지는 범위의 경부하에 대해서는 실질적으로 현가장치에서 적절한 탄성력을 제공하지 못하여, 현가장치의 진동흡수 및 방진기능이 미흡하게 되어 승차감이 떨어진다.Here, the light load in the range of the shackle rotational movement is substantially unable to provide an appropriate elastic force in the suspension device, the vibration absorption and vibration damping function of the suspension is insufficient, the ride comfort is reduced.

이에 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 리프스프링의 섀클이 회동되도록 하고 리프스프링 자체의 탄성변형이 크지 않은 범위의 경부하에 대해서 현가장치가 적절한 탄성력을 제공할 수 있도록 한 리프스프링 현가장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, so that the shackle of the leaf spring is rotated, and the suspension device can provide an appropriate elastic force for the light load in the range that the elastic deformation of the leaf spring itself is not large. The purpose is to provide a leaf spring suspension.

상기한 바와 같은 목적을 달성하기 위한 본 발명 리프스프링 현가장치는 섀클의 하단이 상승하는 회전운동에 대해 변형되면서 탄성 지지력을 제공할 수 있도록 섀클과 차체 사이에 설치된 탄성력제공수단과;The leaf spring suspension of the present invention for achieving the object as described above is provided with an elastic force providing means provided between the shackle and the vehicle body to provide elastic support while the lower end of the shackle is deformed to the rising rotational movement;

새클의 하단이 상승하여 상기 탄성력제공수단을 변형시키는 양을 제한 할 수 있도록 설치된 스토퍼를 포함하여 구성된 것을 특징으로 한다.It characterized in that it comprises a stopper is installed so as to limit the amount of deformation of the elastic force providing means is raised to the bottom of the sackle.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 리프스프링 현가장치의 구성을 도시한 것으로서, 섀클(1)의 하단이 상승하는 회전운동에 대해 변형되면서 탄성 지지력을 제공할 수 있도록 섀클(1)과 차체 사이에 설치된 탄성력제공수단과, 섀클(1)의 하단이 상승하여 상기 탄성력제공수단을 변형시키는 양을 제한 할 수 있도록 설치된 스토퍼(3)가 구비되어 있다.1 is a view illustrating a configuration of a leaf spring suspension device according to the present invention, wherein the lower end of the shackle 1 is deformed against a rising rotational motion while providing elastic support force between the shackle 1 and the vehicle body. Providing means and a stopper (3) is provided to limit the amount of deformation of the elastic force providing means by raising the lower end of the shackle (1).

도 2에는 상기 탄성력제공수단과 스토퍼(3)의 구체적인 실시예가 도시되어 있는 바, 상기 탄성력제공수단은 섀클(1)의 하단이 접촉되는 지지블록(5)과, 상기 지지블록(5)을 지지함과 아울러 섀클(1)의 하단이 상승하는 회전운동에 의해 변형되면서 탄성 지지력을 발생시키는 판재스프링(7)과, 상기 판재스프링(7)을 차체에 연결하여 고정되도록 하는 지지브라켓(9) 등으로 구성되어 있다. 2 shows a specific embodiment of the elastic force providing means and the stopper (3), the elastic force providing means for supporting the support block 5 and the support block 5, the lower end of the shackle (1) is in contact In addition, the lower end of the shackle (1) is deformed by the rotational movement of the rising plate spring (7) for generating an elastic support force, and the support spring (9) for fixing the plate spring (7) by connecting to the vehicle body It consists of.

상기 스토퍼(3)는 상기 판재스프링(7)의 양단을 지지하는 결합홈(11)과, 상기 지지블록(5)을 향하여 돌출된 돌출부(13)를 포함한 형상으로 되어 있고, 고무재질로 형성되며 상기 지지브라켓(9)에 일체로 결합됨으로써 지지브라켓(9)을 통해 차체에 고정된 구조이다.The stopper 3 has a shape including a coupling groove 11 for supporting both ends of the plate spring 7 and a protrusion 13 protruding toward the support block 5, and formed of a rubber material. By being integrally coupled to the support bracket (9) is a structure fixed to the vehicle body through the support bracket (9).

결과적으로 상기 판재스프링(7)은 상기 스토퍼(3)와 지지브라켓(9)에 의해 차체에 고정되는 구조이다.As a result, the leaf spring 7 is fixed to the vehicle body by the stopper 3 and the support bracket 9.

상기 스토퍼(3)의 양단에 구비된 결합홈(11)에 가해지는 판재스프링(7)의 하중을 지탱할 수 있도록 상기 지지브라켓(9)의 양단이 도시된 바와 같이 스토퍼(3)를 감싸도록 절곡되도록 하였다.Both ends of the support bracket 9 are bent to surround the stopper 3 as shown, so as to support the load of the plate spring 7 applied to the coupling groove 11 provided at both ends of the stopper 3. It was made.

상기 지지블록(5)과 판재스프링(7) 사이에는 상기 지지블록(5)이 상기 스토퍼(3)의 돌출부(13)로부터 이격되는 방향으로 탄성 지지하는 스프링인 코일스프링(15)이 구비되어 있다.Between the support block 5 and the plate spring 7 is provided a coil spring 15 which is a spring that the support block 5 is elastically supported in a direction away from the protrusion 13 of the stopper 3. .

상기한 바와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.

차량의 주행중 현가장치에 가해지는 하중이 상기 섀클(1)을 회전시킬 정도만 제공되는 상황에서, 상기 섀클(1)의 하단이 상측으로 회동되면, 상기 지지블록(5)은 섀클(1)과 접촉되면서 섀클(1)로부터 하중을 전달 받고, 상기 지지블록(5)은 상기 코일스프링(15)을 압축시키고 나아가 섀클(1)로부터 받은 하중을 상기 판재스프링(7)으로 전달한다.When the load applied to the suspension device while driving the vehicle is provided only to rotate the shackle 1, when the lower end of the shackle 1 is rotated upward, the support block 5 is in contact with the shackle 1. While receiving the load from the shackle 1, the support block 5 compresses the coil spring 15 and further transfers the load received from the shackle 1 to the plate spring (7).

상기 판재스프링(7)은 도 3과 같이 자체적인 변형에 의해 탄성 지지력을 발생시키고, 이와 같이 발생된 탄성 지지력은 역으로 상기 지지블록(5)과 섀클(1) 및 리프스프링(17)을 통하여 상기 리프스프링(17)에 장착된 차축을 지지하는 힘으로 작용된다.The plate spring 7 generates an elastic support force by its own deformation as shown in FIG. 3, and the elastic support force generated as such is reversely supported by the support block 5, the shackle 1, and the leaf spring 17. It acts as a force supporting the axle mounted to the leaf spring (17).

따라서, 리프스프링(17)의 변형을 발생시키지는 못하는 경부하가 현가장치에 작용하는 경우에, 상기 리프스프링(17)에서 작용하는 탄성 지지력에 의해 차체가 안정적으로 지지될 수 있도록 함으로써, 진동흡수 및 방진기능의 적절한 수행으로 승차감을 향상시키게 된다.Therefore, when a light load that does not cause deformation of the leaf spring 17 acts on the suspension device, the vehicle body can be stably supported by the elastic support force acting on the leaf spring 17, thereby absorbing vibration and The proper performance of the dustproof function improves the riding comfort.

상기 섀클(1)로부터 지지블록(5)에 가해지는 하중이 더 크면, 상기 지지블록(5)은 상기 스토퍼(3)의 돌출부(13)에 접촉하게 되고, 이때, 상기 돌출부(13)는 고무재질로서 갑작스러운 지지블록(5)의 운동제한에 따른 충격을 완화시켜 줌으로써, 충격으로 차체의 승차감이 저하되는 것을 방지한다.If the load applied from the shackle 1 to the support block 5 is greater, the support block 5 is in contact with the protrusion 13 of the stopper 3, wherein the protrusion 13 is rubber By alleviating the impact caused by the sudden limitation of the movement of the support block 5 as a material, the ride comfort of the vehicle body is prevented from being deteriorated by the impact.

상기와 같이 지지블록(5)이 스토퍼(3)의 돌출부(13)에 완전히 밀착된 이후부터 더 가해지는 하중에 대해서는 상기 리프스프링(17)이 종래와 같이 변형되면서 탄성력을 제공하여 현가장치의 기능을 수행하도록 한다.As described above, the leaf spring 17 is deformed as in the related art to the load applied after the support block 5 is completely in close contact with the protrusion 13 of the stopper 3. To do this.

물론, 상기와 같은 하중이 해제되면, 상기 판재스프링(7)은 도 2에 도시된 바와 같이 원상으로 복귀되며, 상기 지지블록(5)은 코일스프링(15)에 의해 상기 스토퍼(3)의 돌출부(13)로부터 이격된 상태를 가지게 된다.Of course, when the load as described above is released, the plate spring 7 is returned to its original shape as shown in Figure 2, the support block 5 is the protrusion of the stopper 3 by the coil spring 15 It will have a state spaced apart from (13).

이상과 같이 본 발명에 의하면, 리프스프링의 섀클이 회동되도록 하고 리프스프링 자체의 탄성변형이 크지 않은 범위의 경부하에 대해서 판재스프링의 변형에 의한 탄성지지력을 적절히 제공할 수 있도록 함으로써, 현가장치의 진동흡수 및 방진기능이 적절히 이루어져 승차감을 향상시키게 된다. As described above, according to the present invention, the vibration of the suspension device by allowing the shackle of the leaf spring to rotate and by appropriately providing the elastic support force by the deformation of the plate spring against the light load in the range that the elastic deformation of the leaf spring itself is not large. Absorption and dustproof functions are properly performed to improve the riding comfort.

도 1은 본 발명에 따른 리프스프링 현가장치를 도시한 도면,1 is a view showing a leaf spring suspension according to the present invention,

도 2는 도 1의 탄성력제공수단과 스토퍼의 구체적인 실시예를 도시한 도면으로서 판재스프링이 변형되지 않은 상태의 도면,Figure 2 is a view showing a specific embodiment of the elastic force providing means and the stopper of Figure 1 in a state that the plate spring is not deformed,

도 3은 도 2에 비교하여 판재스프링이 변형된 상태를 설명한 도면이다.3 is a view illustrating a state in which the plate spring is deformed compared to FIG. 2.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 섀클 3; 스토퍼One; Shackle 3; stopper

5; 지지블록 7; 판재스프링5; Support block 7; Leaf spring

9; 지지브라켓 11; 결합홈9; Support bracket 11; Combined groove

13; 돌출부 15; 코일스프링13; Protrusion 15; Coil spring

17; 리프스프링 17; Leaf spring

Claims (4)

섀클의 하단이 상승하는 회전운동에 대해 변형되면서 탄성 지지력을 제공할 수 있도록 섀클과 차체 사이에 설치된 탄성력제공수단과;Elastic force providing means provided between the shackle and the vehicle body to provide elastic support while the lower end of the shackle is deformed with respect to the rising rotational motion; 새클의 하단이 상승하여 상기 탄성력제공수단을 변형시키는 양을 제한 할 수 있도록 설치된 스토퍼;A stopper installed to limit the amount of deformation of the elastic force providing means by raising the lower end of the sackle; 를 포함하여 구성된 것을 특징으로 하는 리프스프링 현가장치.Leaf spring suspension, characterized in that configured to include. 제1항에 있어서, 상기 탄성력제공수단은 The method of claim 1, wherein the elastic force providing means 섀클의 하단이 접촉되는 지지블록과;A support block to which the bottom of the shackle is in contact; 상기 지지블록을 지지함과 아울러 섀클의 하단이 상승하는 회전운동에 의해 변형되면서 탄성 지지력을 발생시키는 판재스프링과;A plate spring for supporting the support block and generating an elastic support force while being deformed by an upward rotation of the shackle; 상기 판재스프링을 차체에 연결하여 고정되도록 하는 지지브라켓;A support bracket for fixing the plate spring to the vehicle body to be fixed; 을 포함하여 구성된 것을 특징으로 하는 리프스프링 현가장치.Leaf spring suspension, characterized in that configured to include. 제2항에 있어서, 상기 스토퍼는The method of claim 2, wherein the stopper 상기 판재스프링의 양단을 지지하는 결합홈과, 상기 지지블록을 향하여 돌출된 돌출부를 포함하여 구성되고; A coupling groove supporting both ends of the plate spring, and a protrusion protruding toward the support block; 고무재질로 형성되며 상기 지지브라켓에 일체로 결합되어 차체에 고정된 것Is formed of a rubber material and is integrally coupled to the support bracket fixed to the vehicle body 을 특징으로 하는 리프스프링 현가장치.Leaf spring suspension characterized in that. 제3항에 있어서, The method of claim 3, 상기 지지블록과 판재스프링 사이에는 상기 지지블록이 상기 스토퍼의 돌출부로부터 이격되는 방향으로 탄성 지지하는 스프링이 더 구비된 것Between the support block and the plate spring is further provided with a spring for elastically supporting the support block in the direction away from the protrusion of the stopper 을 특징으로 하는 리프스프링 현가장치.Leaf spring suspension characterized in that.
KR10-2003-0061462A 2003-09-03 2003-09-03 leaf spring suspension KR100527730B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109296874A (en) * 2018-12-05 2019-02-01 威海天宇新材料科技有限公司 A kind of general damping type air compressor machine mobile base
DE102005032611B4 (en) * 2005-07-11 2021-01-14 Iveco Magirus Ag Leaf spring suspension for commercial vehicles
DE102005032610B4 (en) * 2005-07-11 2021-03-04 Iveco Magirus Ag Leaf spring suspension for commercial vehicles
KR20220018297A (en) 2020-08-06 2022-02-15 현대자동차주식회사 Apparatus for generating electric energy of vehicle suspension

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005032611B4 (en) * 2005-07-11 2021-01-14 Iveco Magirus Ag Leaf spring suspension for commercial vehicles
DE102005032610B4 (en) * 2005-07-11 2021-03-04 Iveco Magirus Ag Leaf spring suspension for commercial vehicles
CN109296874A (en) * 2018-12-05 2019-02-01 威海天宇新材料科技有限公司 A kind of general damping type air compressor machine mobile base
KR20220018297A (en) 2020-08-06 2022-02-15 현대자동차주식회사 Apparatus for generating electric energy of vehicle suspension

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