KR20020050610A - leafspring for rear wheel suspension of vehicle - Google Patents

leafspring for rear wheel suspension of vehicle Download PDF

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Publication number
KR20020050610A
KR20020050610A KR1020000079801A KR20000079801A KR20020050610A KR 20020050610 A KR20020050610 A KR 20020050610A KR 1020000079801 A KR1020000079801 A KR 1020000079801A KR 20000079801 A KR20000079801 A KR 20000079801A KR 20020050610 A KR20020050610 A KR 20020050610A
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KR
South Korea
Prior art keywords
leaf spring
spring
leaf
eye
vehicle
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KR1020000079801A
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Korean (ko)
Inventor
송길원
Original Assignee
이계안
현대자동차주식회사
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Priority to KR1020000079801A priority Critical patent/KR20020050610A/en
Publication of KR20020050610A publication Critical patent/KR20020050610A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/11—Leaf spring
    • 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
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/44—Vibration noise suppression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise
    • 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
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/182—Leaf springs with inter-engaging portions between leaves or between leaves and mountings, e.g. ridges, notches, ripples

Abstract

PURPOSE: A leaf spring of a vehicle is provided to prevent noise generated by friction between a spring eye and a leaf spring and to reduce weight of the leaf spring by removing a clip. CONSTITUTION: A leaf spring for a vehicle comprises a first leaf spring(21) formed on an upper end of a leaf spring; a second leaf spring(22) mounted on a lower portion of the first leaf spring; a first spring eye(9) mounted on a front portion of the first leaf spring; a second spring eye(10) arranged on a rear portion of the first leaf spring; a third leaf spring(23) fixed on a lower portion of the second leaf spring; a curved unit(27) surrounding the spring eye by being mounted on the third leaf spring; a center bolt(3) installed in the middle of the leaf springs; a U bolt(14) integrally fixing the leaf springs; an inserting protrusion(24) formed on an upper surface of the third leaf spring to prevent movement of the leaf springs; an inserting protrusion(26) formed on an upper portion of the second leaf spring; and an inserting groove(27) inserted to an inserting groove by being mounted on a lower portion of the second leaf spring. Thereby, the leaf spring for the vehicle prevents noise generated by friction between the spring eye and the leaf spring.

Description

자동차용 리프스프링{leafspring for rear wheel suspension of vehicle}Leaf spring for vehicle {leafspring for rear wheel suspension of vehicle}

본 발명은 자동차용 리프스프링에 관한 것으로, 특히 차체의 리바운드시 리프스프링 간의 마찰소음과 스프링아이와 리프스프링과의 마찰에 의한 소음이 발생되는 것을 억제할 수 있고, 상기 리프스프링을 결합시키는 클립을 제거할 수 있는리프스프링에 관한 것이다.The present invention relates to a leaf spring for automobiles, in particular, it is possible to suppress the noise generated by friction between the leaf spring and friction between the spring eye and the leaf spring when the vehicle body rebounds, and eliminates the clip coupling the leaf spring It is about leaf spring which can be done.

일반적으로 자동차는 노면의 충격 외에 차량의 상하로 진동하는 범퍼와 리바운드, 차량의 좌우로의 진동인 러칭(Lurching), 차량의 전후로의 진동인 서징(Surging) 길이방향의 중심축을 기준으로 좌우로 진동하는 롤링 등의 진동을 받는다.Generally, a vehicle vibrates from side to side based on a bumper and rebound vibrating up and down of the vehicle as well as the impact of the road surface, the latching which is the vibration of the vehicle from side to side, and the surging longitudinal axis of the vehicle. To receive vibrations such as rolling.

이러한 진동을 흡수하기 위한 자동차의 현가장치는 차축과 차체를 연결하는 것으로, 주행 중에 차축이 노면에서 받는 진동이나 충격을 흡수하여 차체에 직접 전달되지 않도록 함으로써 차체나 화물의 손상을 방지하고 승차감을 좋게 유지하는 역할을 한다. 현가장치를 구성하는 여러 요소 중에서 노면으로부터 전달되는 진동이나 충격을 직접적으로 흡수하는 스프링으로는 승용 차량에 사용하는 코일스프링과, 승차감이 나빠 주로 트럭 등 상용차에 주로 사용하는 리프스프링이 있다.Suspension of the vehicle to absorb such vibration is to connect the axle and the body, so that the axle absorbs the vibration or shock received from the road surface while driving so that it is not transmitted directly to the body to prevent damage to the body or cargo and improve ride comfort It plays a role. Among the elements constituting the suspension system, the spring that directly absorbs the vibration or shock transmitted from the road surface is a coil spring used in passenger vehicles and a leaf spring mainly used in commercial vehicles such as trucks due to poor riding comfort.

도1에 도시한 바와 같이, 일반적인 리프스프링의 구조는 스프링강을 띠모양으로 성형한 판을 포갠 것으로 리프스프링결합체(1)의 최상단에 있는 리프스프링의 양단을 둥글게 만들어 고정핀(2)을 끼울 수 있게 만들어 고정핀(2)을 끼울 수 있는 부분인 스프링아이(9,10)를 포함한다. 몇 장의 리프스프링의 중심에 구멍을 형성하여 센터볼트(3)로 체결하여 각각의 리프스프링이 길이 방향으로 움직이지 않도록 한다. 상기 최상단 리프스프링의 양단은 새클핀(2)에 의해 새클(4)의 하단에 연결하며, 새클(4)의 상단은 힌지핀(2)에 의해서 프레임에 부착되어 있는 스프링 브라켓(8)에 회동 가능하게 결합된다.As shown in Fig. 1, the structure of a general leaf spring is a plate formed by forming a strip of spring steel in a shape of a band, so that both ends of the leaf spring at the top of the leaf spring assembly 1 are rounded so that the fixing pin 2 can be fitted. Make it possible to include a spring eye (9, 10) that can be fitted to the fixing pin (2). A hole is formed in the center of several leaf springs and fastened with a center bolt (3) so that each leaf spring does not move in the longitudinal direction. Both ends of the uppermost leaf spring are connected to the lower end of the sackle 4 by a sackle pin 2, and the upper end of the sackle 4 is pivoted on a spring bracket 8 attached to the frame by a hinge pin 2. Possibly combined.

상기 리프스프링(11)의 스프링아이(9,10)는 스프링 브라켓(8)에 볼트와 너트로 체결되며, 볼트와 스프링아이(9,10)사이에는 진동을 흡수하기 위한 러버를 포함하는 부싱(7)이 설치된다.The spring eyes 9 and 10 of the leaf spring 11 are fastened to the spring bracket 8 with bolts and nuts, and a bushing including a rubber for absorbing vibration between the bolts and spring eyes 9 and 10. 7) is installed.

도2는 리프스프링의 조립체를 도시한 측면도로써, 상기 리프스프링조립체의 제1리프스프링(11)의 양단에는 상기 제1리프스프링(11)을 차체에 설치하기 위한 스프링아이(9,10)가 형성되어있고, 상기 제1리프스프링(11)의 하부에는 제2.3리프스프링(12,13)이 적층 설치되어있다. 상기 제2리프스프링(12)의 후단부는 차체의 리바운드시 스트로크를 제한하기 위해 상기 제2스프링아이(10)의 외주부를 감싸도록 만곡부(15)가 일체로 형성되어 있다. 상기 리프스프링의 중앙부에는 다수의 리프스프링(11,12,13)을 고정하기 위한 센터볼트(3)와 U볼트(14)가 설치되어 있다. 상기 리프스프링의 양단에는 클립(5)이 부착되어 상기 리프스프링들이 벌어지는 것을 방지한다.Figure 2 is a side view showing the assembly of the leaf spring, the spring eye (9, 10) for installing the first leaf spring (11) in the vehicle body at both ends of the first leaf spring (11) of the leaf spring assembly The second leaf springs 12 and 13 are stacked on the lower portion of the first leaf spring 11. The rear end of the second leaf spring 12 is integrally formed with a curved portion 15 to surround the outer circumference of the second spring eye 10 to limit the stroke when the vehicle body rebounds. A center bolt 3 and a U bolt 14 for fixing a plurality of leaf springs 11, 12, 13 are provided at the center of the leaf spring. Clips 5 are attached to both ends of the leaf spring to prevent the leaf springs from opening.

상기와 같이 리프스프링의 장착구조는 상기 다수의 리프스프링에 클립(5)을 부착했을 때 상기 리프스프링(11,12,13)의 좌우유동으로 인한 리프스프링(11,12,13)과 클립(5)사이의 마찰에 의해 마찰소음이 발생되는 문제점과, 제2리프스프링(12)에 스프링아이를 감싸게 했을 때, 상기 제2리프스프링(12)과 제2스프링아이(10)의 간격이 좁아 제2리프스프링과 제2스프링아이(10)의 마찰발생으로 소음이 발생되는 문제점을 가진다.As described above, the mounting structure of the leaf spring is the leaf spring (11, 12, 13) and the clip (when the left and right flow of the leaf spring (11, 12, 13) when the clip 5 is attached to the plurality of leaf spring ( 5) the friction noise is generated by the friction between and when the spring eye is wrapped around the second leaf spring 12, the interval between the second leaf spring 12 and the second spring eye 10 is narrow Noise is generated by friction between the second leaf spring and the second spring eye 10.

이에 본 발명은 상기와 같은 문제점을 해소하기 위한 것으로, 차량의 리바운드시 리프스프링간의 마찰소음과 스프링아이와 리프스프링과의 마찰에 의한 소음이발생되는 것을 억제하고, 상기 리프스프링을 결합시키는 클립을 제거하여 상기 리프스프링의 경량화 및 원가절감을 할 수 있는 차량용 리프스프링을 제공하는 것을 목적으로 한다Accordingly, the present invention is to solve the above problems, to suppress the noise generated by the friction noise between the leaf spring and the friction between the spring eye and the leaf spring when the vehicle rebounds, to remove the clip coupling the leaf spring It is an object of the present invention to provide a vehicle leaf spring that can reduce the weight and cost of the leaf spring

전술한 목적을 달성하기 위한 본 발명의 리프스프링 조립체는 그 최상단에 설치되고 양단부에 제1 및 제2스프링아이를 구비하는 제1리프스프링과, 상기 제1리프스프링의 하측에 중첩되는 제2리프스프링과, 상기 제2리프스프링의 하측에 중첩됨과 동시에 그 후단부에는 상기 제2스프링아이를 둘러싸는 만곡부를 구비하는 제3리프스프링과, 상기 제1,2,3리프스프링을 일체로 고정하는 센터볼트 및 U볼트를 구비하는 자동차용 리프스프링 조립체에 있어서, 상기 제1,2,3리프스프링이 좌우로 유동하는 것을 방지하기 위해 상기 제3리프스프링의 표면상부에 형성된 삽입돌기와, 상기 삽입돌기가 삽입되는 상기 제2리프스프링의 하면상에 형성된 삽입요홈과, 상기 제2리프스프링의 상면에 형성된 삽입돌기와, 상기 삽입돌기가 삽입되는 상기 제1리프스프링의 하면상에 형성된 삽입요홈을 구비하는 것을 특징으로 한다.The leaf spring assembly of the present invention for achieving the above object is provided with a first leaf spring installed on the top and having first and second spring eyes at both ends, and a second leaf overlapping the lower side of the first leaf spring. A third leaf spring having a spring, a lower portion overlapping the second leaf spring, and having a curved portion surrounding the second spring eye at a rear end thereof, and integrally fixing the first, second, and third leaf springs; An automotive leaf spring assembly having a center bolt and a U bolt, comprising: an insertion protrusion formed on an upper surface of the third leaf spring to prevent the first, second, and third leaf springs from flowing side to side; An insertion groove formed on a lower surface of the second leaf spring into which the insertion is performed, an insertion protrusion formed on an upper surface of the second leaf spring, and a lower portion of the first leaf spring into which the insertion protrusion is inserted. It characterized in that it includes an insertion groove formed on.

도1은 종래 자동차용 리프스프링의 분해사시도,1 is an exploded perspective view of a conventional vehicle leaf spring,

도2는 종래 자동차용 리프스프링의 측면도,2 is a side view of a conventional vehicle leaf spring,

도3은 본 발명에 따른 리프스프링의 측면도,3 is a side view of the leaf spring according to the present invention;

도4a는 본 발명에 따른 리프스프링의 배면사시도,Figure 4a is a rear perspective view of the leaf spring according to the present invention,

도4b는 본 발명에 따른 리프스프링의 사시도.Figure 4b is a perspective view of the leaf spring according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1-리프스프링 조립체 5-클립1-leaf spring assembly 5-clip

21-제1리프스프링 22-제2리프스프링21-first leaf spring 22-second leaf spring

23-제3리프스프링 24-삽입돌기23-third leaf spring 24-insertion protrusion

25-삽입요홈25-insertion recess

이하, 본 발명의 실시예를 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도3은 본 발명에 따른 자동차용 리프스프링조립체의 측면도로써, 상기 리프스프링조립체의 구조는 리프스프링의 최상단에 설치되는 제1리프스프링(21)과, 상기 제1리프스프링(21)의 아래에 중첩되는 제2리프스프링(22)과, 상기 제2리프스프링(22)의 아래에 중첩되는 스프링아이를 감싸는 만곡부(27)가 형성된 제3리프스프링(23)을 구비하고, 상기 제1리프스프링(21)의 전방에는 제1스프링아이(9)가 형성되어 있고, 그 후방에는 제2스프링아이(10)가 형성되어 있다.3 is a side view of a leaf spring assembly for automobiles according to the present invention, wherein the structure of the leaf spring assembly includes a first leaf spring 21 installed at the top of the leaf spring and a bottom of the first leaf spring 21. And a third leaf spring 23 having an overlapping second leaf spring 22 and a curved portion 27 surrounding the spring eye overlapping the second leaf spring 22. A first spring eye 9 is formed in front of 21, and a second spring eye 10 is formed in the rear thereof.

상기 제1,2,3리프스프링(21,22,23)의 중앙부에는 이들 제1,2,3리프스프링(21,22,23)을 일체로 고정하는 센터볼트(3)가 설치되어 있고, 상기 리프스프링(11,12,13)의 중앙부에는 다수의 리프스프링을 고정하기 위한 U볼트(14)가 설치되어 있다.In the center of the first, second and third leaf springs 21, 22 and 23, center bolts 3 are integrally fixed to the first, second and third leaf springs 21, 22 and 23. At the center of the leaf springs 11, 12 and 13, U bolts 14 for fixing a plurality of leaf springs are provided.

상기 제1,2,3리프스프링(21,22,23)은 그 후단부에 이들 제1,2,3리프스프링(21,22,23)의 좌우유동을 방지하기 위한 삽입돌기(24) 및 삽입요홈(25)을 구비하고 있다. 즉, 상기 제3리프스프링(23)의 일측 상면에는 삽입돌기(24)가 형성되어 있고, 상기 제2리프스프링(22)의 일측 하면에는 상기 삽입돌기(24)가 삽입되는 삽입요홈(25)이 형성되어 있다. 또, 상기 삽입요홈(25)의 반대측면에는 상기 삽입요홈(25)의 형성시 돌출형성된 삽입돌기(26)가 형성되어 있다.The first, second, and third leaf springs 21, 22, and 23 have insertion protrusions 24 for preventing left and right flow of the first, second, and third leaf springs 21, 22, and 23 at the rear end thereof. An insertion recess 25 is provided. That is, an insertion protrusion 24 is formed on an upper surface of one side of the third leaf spring 23, and an insertion recess 25 into which the insertion protrusion 24 is inserted on one lower surface of the second leaf spring 22. Is formed. In addition, an insertion protrusion 26 protruding when the insertion groove 25 is formed is formed on the opposite side of the insertion groove 25.

상기 제1,2,3리프스프링(21,22,23)의 조립시, 상기 제3리프스프링(23)의 삽입돌기(24)는 상기 제2리프스프링(22)의 삽입요홈(25)에 삽입되고, 상기 제2리프스프링(22)의 삽입돌기(26)는 상기 제1리프스프링(21)의 삽입요홈에 삽입된다.When assembling the first, second and third leaf springs 21, 22 and 23, the insertion protrusion 24 of the third leaf spring 23 is inserted into the insertion recess 25 of the second leaf spring 22. The insertion protrusion 26 of the second leaf spring 22 is inserted into the insertion recess of the first leaf spring 21.

도4a는 본 발명에 따른 자동차용 리프스프링의 제2리프스프링(22)의 배면을 보여주는 사시도로써, 상기 제2리프스프링(22)은 그 하면에 삽입요홈(25)이 형성되어 있고, 이 삽입요홈(25)에는 상기 제3리프스프링(23)의 표면상부에 형성된 삽입돌기(24)가 삽입결합된다.4A is a perspective view showing a rear surface of a second leaf spring 22 of a leaf spring for a vehicle according to the present invention, wherein the second leaf spring 22 has an insertion recess 25 formed therein. The recess 25 is inserted into the insertion protrusion 24 formed on the surface of the third leaf spring (23).

도4b는 본 발명에 따른 자동차용 리프스프링의 제3리프스프링(22)을 보여주는 사시도로써, 상기 제3리프스프링(23)은 그 상면에 삽입돌기(24)가 형성되어 있고, 이 삽입돌기(24)는 상기 제2리프스프링(22)의 하면에 형성된 삽입요홈(25)에 삽입결합된다.Figure 4b is a perspective view showing a third leaf spring 22 of the leaf spring for a vehicle according to the present invention, the third leaf spring 23 has an insertion protrusion 24 formed on its upper surface, this insertion projection ( 24 is inserted into the insertion recess 25 formed in the lower surface of the second leaf spring (22).

이하, 본 발명에 따른 리프스프링 조립체의 작용에 대하여 설명한다.Hereinafter, the operation of the leaf spring assembly according to the present invention.

차량의 리바운드와 롤링에 의해 상기 제1,2,3리프스프링(21,22,23)의 좌우유동이 발생하면, 상기 제3리프스프링(23)의 삽입돌기(24)가 상기 제2리프스프링(22)의 삽입요홈(25)에 결합되어 있고, 상기 제2리프스프링(22)의 삽입돌기(26)가 상기 제1리프스프링(21)의 삽입요홈에 결합되어 있으므로 제1,2,3리프스프링(21.22.23) 상호간의 유동이 방지됨으로써 이들 제1,2,3리프스프링(21.22.23) 사이에서 발생되는 마찰이 억제된다.When left and right flows of the first, second, and third leaf springs 21, 22, and 23 occur due to rebounding and rolling of the vehicle, the insertion protrusion 24 of the third leaf spring 23 causes the second leaf spring. And the insertion protrusions 26 of the second leaf springs 22 are coupled to the insertion grooves of the first leaf springs 21. By preventing the flow between the leaf springs 21.22.23, friction generated between these first, second and third leaf springs 21.22.23 is suppressed.

또, 상기 제3리프스프링(23)의 후단부에 형성된 제2스프링아이(10)는 전술한 만곡부(27)에 의해 유동가능하게 둘러싸여 있고, 이 만곡부(27)와 상기 제2스프링아이(10)의 사이에는 충분한 간격이 확보되어 있으므로 차체의 리바운드시 상기 제2스프링아이(10)와 만곡부(27)사이에서 발생하는 마찰이 효과적으로 억제될 수 있다.In addition, the second spring eye 10 formed at the rear end of the third leaf spring 23 is circumferentially surrounded by the above-described curved part 27, and the curved part 27 and the second spring eye 10 are formed. Since a sufficient gap is secured between the two wheels, friction generated between the second spring eye 10 and the curved portion 27 when the vehicle body is rebounded can be effectively suppressed.

상기와 같이 상기 리프스프링에 삽입요홈과 삽입돌기를 설치함으로써 상기 리프스프링의 좌우 유동에 의한 마찰소음을 방지하고, 제3리프스프링이 제2스프링아이의 외주부를 감싸는 만곡부에 일정간격을 확보함으로써 차체의 리바운드시 제2스프링아이와 상기 제3리프스프링의 만곡부사이에 마찰소음을 억제하여 리프스프링의 성능을 향상한다. 또한 종래에 리프스프링의 양단에 설치된 클립(5)을 설치하지 않음으로써 부품수와 공정을 축소할 수 있어 원가절감 및 경량화를 달성할 수 있는 효과가 있다.As described above, the insertion groove and the insertion protrusion are installed in the leaf spring to prevent friction noise caused by the left and right flow of the leaf spring, and the third leaf spring secures a predetermined distance to the curved portion surrounding the outer circumference of the second spring eye. During the rebound, friction noise between the second spring eye and the curved portion of the third leaf spring is suppressed, thereby improving the performance of the leaf spring. In addition, it is possible to reduce the number of parts and the process by not installing the clip 5 installed on both ends of the leaf spring in the related art, thereby achieving cost reduction and weight reduction.

Claims (2)

리프스프링 조립체의 최상단에 설치되고 양단부에 제1 및 제2스프링아이(9)(10)를 구비하는 제1리프스프링(21)과, 상기 제1리프스프링의 하측에 중첩되는 제2리프스프링(22)과, 상기 제2리프스프링(22)의 하측에 중첩됨과 동시에 그 후단부에는 상기 제2스프링아이(10)를 둘러싸는 만곡부를 구비하는 제3리프스프링(23)과, 상기 제1,2,3리프스프링(21,22,23)을 일체로 고정하는 센터볼트(3) 및 U볼트(14)를 구비하는 자동차용 리프스프링 조립체에 있어서, 상기 제1,2,3리프스프링(21,22,23)이 좌우로 유동하는 것을 방지하기 위해 상기 제3리프스프링(23)의 표면상부에 형성된 삽입돌기(24)와, 상기 삽입돌기(24)가 삽입되는 상기 제2리프스프링(22)의 하면상에 형성된 삽입요홈(25)과, 상기 제2리프스프링(22)의 상면에 형성된 삽입돌기(26)와, 상기 삽입돌기(26)가 삽입되는 상기 제1리프스프링(21)의 하면상에 형성된 삽입요홈을 구비하는 것을 특징으로 하는 자동차용 리프스프링 조립체.A first leaf spring 21 provided at an upper end of the leaf spring assembly and having first and second spring eyes 9 and 10 at both ends thereof, and a second leaf spring overlapping a lower side of the first leaf spring ( 22) and a third leaf spring 23 having a curved portion that overlaps with the lower side of the second leaf spring 22 and surrounds the second spring eye 10 at a rear end thereof. In a leaf spring assembly for an automobile having a center bolt 3 and a U bolt 14 for integrally fixing the 2, 3 leaf springs 21, 22, 23, the first, 2, 3 leaf springs 21 Insertion protrusions 24 formed on the surface of the third leaf springs 23 and the second leaf springs 22 into which the insertion protrusions 24 are inserted in order to prevent 22 and 23 from flowing left and right. Insertion groove 25 formed on the lower surface of the), the insertion protrusion 26 formed on the upper surface of the second leaf spring 22, and the insertion protrusion 26 is inserted Leaf spring assembly for an automobile, characterized in that it has an insertion recess formed on the bottom surface of the first leaf spring (21). 청구항1에 있어서, 상기 제2스프링아이(10)를 둘러싸는 만곡부(27)는 그 만곡부(27)와 상기 제2스프링(10) 사이에 이들 두 부재 사이의 마찰을 억제할 수 있는 정도의 충분한 간격을 확보하고 있는 것을 특징으로 하는 자동차용 리프스프링 조립체.The curved portion 27 surrounding the second spring eye 10 is sufficient to suppress the friction between the two members between the curved portion 27 and the second spring 10. An automotive leaf spring assembly, characterized in that a gap is secured.
KR1020000079801A 2000-12-21 2000-12-21 leafspring for rear wheel suspension of vehicle KR20020050610A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104165203A (en) * 2013-05-20 2014-11-26 北汽福田汽车股份有限公司 Steel plate spring assembly and vehicle
KR20180108078A (en) 2017-03-24 2018-10-04 현대자동차주식회사 Leaf spring for vehicle
CN114746667A (en) * 2019-11-27 2022-07-12 日本发条株式会社 Leaf spring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104165203A (en) * 2013-05-20 2014-11-26 北汽福田汽车股份有限公司 Steel plate spring assembly and vehicle
KR20180108078A (en) 2017-03-24 2018-10-04 현대자동차주식회사 Leaf spring for vehicle
CN114746667A (en) * 2019-11-27 2022-07-12 日本发条株式会社 Leaf spring device
CN114746667B (en) * 2019-11-27 2024-02-23 日本发条株式会社 Leaf spring device
US11927233B2 (en) 2019-11-27 2024-03-12 Nhk Spring Co., Ltd. Leaf spring device

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