KR20170030963A - Vehicle for leaf spring - Google Patents

Vehicle for leaf spring Download PDF

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Publication number
KR20170030963A
KR20170030963A KR1020150128555A KR20150128555A KR20170030963A KR 20170030963 A KR20170030963 A KR 20170030963A KR 1020150128555 A KR1020150128555 A KR 1020150128555A KR 20150128555 A KR20150128555 A KR 20150128555A KR 20170030963 A KR20170030963 A KR 20170030963A
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KR
South Korea
Prior art keywords
leaf spring
spring
vehicle
lowermost
plate
Prior art date
Application number
KR1020150128555A
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Korean (ko)
Other versions
KR101724479B1 (en
Inventor
안치영
유지환
Original Assignee
현대자동차주식회사
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Priority to KR1020150128555A priority Critical patent/KR101724479B1/en
Publication of KR20170030963A publication Critical patent/KR20170030963A/en
Application granted granted Critical
Publication of KR101724479B1 publication Critical patent/KR101724479B1/en

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    • 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
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/22—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only
    • B60G11/23—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only of the torsional-energy-absorption type
    • 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
    • B60G2202/14—Plastic spring, e.g. rubber

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)

Abstract

A leaf spring for a weight is disclosed. A leaf spring for a vehicle according to an embodiment of the present invention includes a top leaf spring mounted on the lower side of both side frames of a vehicle body, a bottom leaf spring disposed below the top leaf spring, and a leaf spring disposed between the top leaf spring and the bottom leaf spring A leaf spring for a vehicle comprising at least one intermediate leaf spring, comprising: i) a plate interposed between both ends of the uppermost leaf spring and both ends of the intermediate leaf spring, a plate coupled to an upper surface of the intermediate leaf spring, and ii) And a clamp disposed between both ends of the spring and both ends of the intermediate plate spring and coupled to a lower surface of the intermediate plate spring and opened downward to support both ends of the lowest plate spring.

Description

[0001] VEHICLE FOR LEAF SPRING [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a leaf spring for a vehicle, and more particularly, to a leaf spring for a vehicle for preventing a twist generated when a vehicle is bumped.

Generally, the vehicle body is supported by a suspension connected to the wheel. The suspension absorbs various vibrations and shocks generated during driving of the vehicle to improve ride comfort and adjusts the overall balance of the vehicle body according to the state of the road surface while driving.

In turning, the stable adjustment of the driver against the centrifugal force is ensured to prevent the tilting in one direction due to the centrifugal force. A type mainly used for the above suspension is a leaf spring (LEAF SPRING) type in which a spring steel plate is laminated and a coil spring type in which a coil is wound in a round shape.

Among them, the leaf spring type has a plurality of spring plates which are stacked with a plurality of different lengths and which are fastened in a longitudinal direction, and both ends of the uppermost spring plate are mounted on the vehicle body frame, And is located inside the side member.

However, in the prior art, when the leaf spring moves up and down with a load applied to the vehicle at the time of bumping the vehicle, twisting occurs in the lowermost spring plate of the leaf spring, and the spring stiffness of the entire leaf spring is lowered. Accordingly, breakage of the leaf spring frequently occurs at the time of bump of the vehicle, and there is a problem that the ride feeling is lowered together with the abnormal behavior of the vehicle.

An embodiment of the present invention is to provide a leaf spring for a vehicle that can prevent twisting of the lowermost leaf spring by a simple structure when the vehicle is bumped.

According to one or more embodiments of the present invention, a leaf spring for a vehicle includes a top leaf spring mounted on a lower portion of both side frames of a vehicle body, a bottom leaf spring disposed on a lower side of the top leaf spring, And iii) a plate interposed between both ends of the uppermost leaf spring and both ends of the intermediate leaf spring, the plate being coupled to the upper surface of the intermediate leaf spring, and ii) at least one intermediate leaf spring And a clamp which is disposed between both ends of the lowermost leaf spring and both ends of the intermediate leaf spring and is coupled to a lower surface of the intermediate leaf spring and opens downward to support both ends of the lowermost leaf spring.

Further, in the leaf spring for a vehicle according to the embodiment of the present invention, the plate may be made of a plastic material.

Further, in the leaf spring for a vehicle according to the embodiment of the present invention, the plate and the clamp can be coupled with both ends of the intermediate leaf spring through the fastening member with both ends of the intermediate leaf spring interposed therebetween.

In the leaf spring for a vehicle according to an embodiment of the present invention, the clamp includes a clamp body having a mounting end coupled to a lower end of both ends of the intermediate plate spring, and a support end extending downward on both sides of the mounting end, And a bumper joined to the inner surface of the bumper.

Further, in the leaf spring for a vehicle according to the embodiment of the present invention, the bumper may have a first portion joined to the inner surface of the mounting end and an inner surface formed in an arch shape, and a second portion integrally connected to the first portion And a second portion joined to the inner surface of the support end and contacting both sides of the lowermost leaf spring.

Further, in the leaf spring for a vehicle according to the embodiment of the present invention, the bumper may be made of a rubber material or a plastic material.

In the leaf spring for a vehicle according to the embodiment of the present invention, contact protrusions contacting the inner surface of the first portion may protrude from both ends of the lowermost leaf spring.

Further, in the leaf spring for a vehicle according to the embodiment of the present invention, the contact protruding portion may be vertically coupled at both ends of the lowermost leaf spring.

Further, in the leaf spring for a vehicle according to the embodiment of the present invention, the contact protruding portion may be made of a plastic material.

The embodiment of the present invention can reduce the impact generated at the leaf spring through the bump plate at the vehicle and prevent the right and left twist of the lowermost leaf spring through the clamp to improve ride comfort.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a view showing a mounting state of a leaf spring for a vehicle according to an embodiment of the present invention.
2 is a partial perspective view of a leaf spring for a vehicle according to an embodiment of the present invention.
3 is a side view of a leaf spring for a vehicle according to an embodiment of the present invention.
4 is a view showing an operating state of a leaf spring for a vehicle according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

In the following detailed description, the names of components are categorized into the first, second, and so on in order to distinguish the components from each other in the same relationship, and are not necessarily limited to the order in the following description.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

It is to be understood that the terms "unit," "means," "portion," "absence," and the like are used herein to refer to a unit of a generic configuration .

1 is a view showing a mounting state of a leaf spring for a vehicle according to an embodiment of the present invention.

Referring first to FIG. 1, a leaf spring 10 according to an embodiment of the present invention can be applied to a suspension mounted on a commercial vehicle. The leaf spring 10 has a plurality of spring plates stacked on each other, and the spring plates can be fastened through the center bolt (not shown) or the like without moving in the longitudinal direction.

The leaf spring 10 basically includes the uppermost leaf spring 11, the intermediate leaf spring 15, and the lowermost leaf spring 17. The uppermost leaf spring 11 is mounted at both ends of the frame 1 on both sides of the vehicle body via the sheave link 13. The lowermost leaf spring (17) is disposed below the uppermost leaf spring (11). The intermediate leaf spring 15 is disposed between the uppermost leaf spring 11 and the lowermost leaf spring 17. One or more intermediate plate springs 15 are disposed between the uppermost leaf spring 11 and the lowermost leaf spring 17, and one example will be described below.

FIG. 2 is a partial perspective view of a leaf spring for a vehicle according to an embodiment of the present invention, and FIG. 3 is a side view of a leaf spring for a vehicle according to an embodiment of the present invention.

2 to 3, the leaf spring 10 for a vehicle according to the embodiment of the present invention reduces friction and impact between the uppermost leaf spring 11 and the intermediate leaf spring 15 when the vehicle is bumped, And a plate (20) and a clamp (30) for preventing right and left twisting of the lowermost leaf spring (17).

The plate 20 is interposed between both ends of the uppermost leaf spring 11 and both ends of the intermediate leaf spring 15 and is engaged with the upper surface of the intermediate leaf spring 15. Such a coupling structure of the plate 20 will be described later in detail. The plate 20 is made of a plastic material and can reduce the impact generated from the uppermost leaf spring 11 and the intermediate leaf spring 15.

The clamp 30 is disposed between both ends of the lowermost leaf spring 17 and both ends of the intermediate leaf spring 15 and is engaged with the lower surface of the intermediate leaf spring 15, And has a lower opening so that both ends of the lowermost leaf spring 17 are supported.

The plate 20 and the clamp 30 are engaged with both ends of the intermediate leaf spring 15 through the fastening member 50 with both ends of the intermediate leaf spring 15 interposed therebetween. Here, the fastening member 50 may include a rivet or a bolt and a nut.

The clamp 30 includes a clamp body 31 and a bumper 33. The clamp body 31 includes a mounting end 31a coupled to both ends of the intermediate leaf spring 15 and a mounting end 31a extending downward on both sides of the mounting end 31a to support both ends of the lowermost leaf spring 17 And a support end 31b.

The bumper 33 is joined to the inner surface of the clamp body 31 and includes a first portion 33a and a second portion 33b. The first portion 33a is joined to the inner surface of the mounting end 31a, and its inner surface is formed in an arch shape. The second portion 33b is integrally connected to the first portion 33a and is joined to the inner surface of the support end 31b and both sides of the lowermost leaf spring 17 are contacted. Here, the bumper 33 is made of a rubber material or a plastic material.

At both ends of the lowermost leaf spring (17), a contact protruding portion (40) is formed protruding to contact the inner surface of the first portion (33a). The contact protruding portion 40 is connected to the both ends of the lowermost leaf spring 17 in the vertical direction and is made of a plastic material so that the impact is reduced when the inner surface of the first portion 33a is contacted.

4 is a view showing an operation of a leaf spring for a vehicle according to an embodiment of the present invention.

Referring to FIG. 4, the leaf spring 10 according to the embodiment of the present invention flows in the vertical direction of the vehicle body frame 1 when the vehicle is bumped. Then, the intermediate leaf spring 15 comes into contact with the uppermost leaf spring 11, and friction and impact are generated. At this time, the plate 20 reduces friction and impact between the uppermost leaf spring 11 and the intermediate leaf spring 15.

Then, the lowermost leaf spring 17 vertically flows between the intermediate leaf springs 15, and torsion occurs to the left and right. At this time, the support end 31b of the clamp body 31 is brought into contact with both sides of the lowermost leaf spring 17 to prevent the lowermost leaf spring 17 from being twisted to the left and right. And flows vertically without shaking.

And the contact protruding portion 40 is brought into contact with the inner surface of the first portion 33a. Since the first portion 33a has an inner surface formed in an arch shape, the impact transmitted through the contact protruding portion 40 is concentrated to the inside of the first portion 33a, And the lowermost leaf spring 17 vertically flows without a left-right swing.

That is, in the embodiment of the present invention, it is possible to prevent the occurrence of the twist of the relatively large displacement of the lowermost leaf spring 17 through the downward open clamp 30, and the arcuate portion of the clamp 30 and the lowermost leaf spring 17, It is possible to prevent the occurrence of the twist of the relatively small displacement of the lowermost leaf spring 17 through the projection structure of the lowermost leaf spring 17.

The leaf spring 10 for a vehicle according to the embodiment of the present invention as described above can reduce the impact generated in the uppermost leaf spring 11 and the intermediate leaf spring 15 through the bump plate 20 of the vehicle And the right and left twist of the lowermost leaf spring 17 can be prevented through the clamp 30, thereby improving ride comfort.

Therefore, in the embodiment of the present invention, since the left and right twist of the lowermost leaf spring 17 is prevented through the clamp 30, it is possible to prevent the behavior abnormality of the vehicle.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

1: Frame 10: Leaf spring
11: top plate spring 13:
15: intermediate plate spring 17: lowest plate spring
20: Plate 30: Clamp
31: Clamp body 31a: Mounting end
31b: support end 33: bumper
33a: first part 33b: second part
40: contact protruding portion 50: fastening member

Claims (9)

A leaf spring including at least one intermediate leaf spring disposed between the uppermost leaf spring and the lowermost leaf spring; a leaf spring disposed at a lower portion of both frames of the vehicle body; In the spring,
A plate interposed between both ends of the uppermost leaf spring and both ends of the intermediate leaf spring and coupled to the upper surface of the intermediate leaf spring; And
A clamp which is disposed between both ends of the lowermost leaf spring and both ends of the intermediate leaf spring, is coupled to a lower surface of the intermediate leaf spring and opens downward to support both ends of the lowermost leaf spring;
And a leaf spring for a vehicle. The method according to claim 1,
The plate
Leaf springs made of plastic material. The method according to claim 1,
The plate and the clamp
And both ends of the intermediate plate spring are coupled to both ends of the intermediate plate spring via fastening members with both ends of the intermediate plate spring interposed therebetween. The method according to claim 1,
The clamp
A clamping body including a mounting end coupled to both ends of the intermediate plate spring and a supporting end extending downward on both sides of the mounting end; And
A bumper joined to the inner surface of the clamp body;
And a leaf spring for a vehicle. 5. The method of claim 4,
The bumper
A first portion joined to an inner surface of the mounting end and having an inner surface formed in an arch shape,
And a second portion integrally connected to the first portion and joined to an inner side surface of the support end, the second portion contacting both sides of the lowermost leaf spring. 6. The method of claim 5,
The bumper
A leaf spring for a vehicle made of rubber material or plastic material. 6. The method of claim 5,
And a contact projection portion that is in contact with the inner side surface of the first portion is protruded from both ends of the lowermost leaf spring. 8. The method of claim 7,
The contact protrusion
And a leaf spring for a vehicle, the leaf spring being inserted through the both ends of the lowermost leaf spring in a vertical direction. 9. The method of claim 8,
The contact protrusion
Leaf springs made of plastic material.
KR1020150128555A 2015-09-10 2015-09-10 Vehicle for leaf spring KR101724479B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150128555A KR101724479B1 (en) 2015-09-10 2015-09-10 Vehicle for leaf spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150128555A KR101724479B1 (en) 2015-09-10 2015-09-10 Vehicle for leaf spring

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KR20170030963A true KR20170030963A (en) 2017-03-20
KR101724479B1 KR101724479B1 (en) 2017-04-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102270364B1 (en) 2020-01-30 2021-06-29 쌍용자동차 주식회사 A method of fitting a jig for the assembly of a leaf-spring of a car and a leaf-spring using it
WO2022108130A1 (en) * 2020-11-23 2022-05-27 주식회사 더블유 Damper rubber spring structure for leaf springs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0566350U (en) * 1992-02-18 1993-09-03 中央発條株式会社 Leaf spring
KR100883251B1 (en) * 2007-12-12 2009-02-10 현대자동차주식회사 Leaf spring assembly for vehicle
CN203516562U (en) * 2013-10-11 2014-04-02 北汽福田汽车股份有限公司 Plate spring and vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0566350U (en) * 1992-02-18 1993-09-03 中央発條株式会社 Leaf spring
KR100883251B1 (en) * 2007-12-12 2009-02-10 현대자동차주식회사 Leaf spring assembly for vehicle
CN203516562U (en) * 2013-10-11 2014-04-02 北汽福田汽车股份有限公司 Plate spring and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102270364B1 (en) 2020-01-30 2021-06-29 쌍용자동차 주식회사 A method of fitting a jig for the assembly of a leaf-spring of a car and a leaf-spring using it
WO2022108130A1 (en) * 2020-11-23 2022-05-27 주식회사 더블유 Damper rubber spring structure for leaf springs

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Publication number Publication date
KR101724479B1 (en) 2017-04-07

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