Shock absorber for automobiles

专利摘要:
PURPOSE: A shock absorber for damping of a car is provided to make smoothly the damping effect of a car and to prevent a separation of a material for improving durability of device by adding a graphite of circular type into a material of a teflon band. CONSTITUTION: A shock absorber for damping of a car comprises : a tube(14) to be inserted into a base cell(12) ; a piston(16) to be inserted into a tube(14) and to surrounded by a teflon band(18) ; a material of a teflon band(18) to add a graphite of circular type of 15%. And a graphite of circular type has a particle of 100-40 micro meters and the component ratio of a particle is over 80%.
公开号:KR20000056106A
申请号:KR1019990005134
申请日:1999-02-12
公开日:2000-09-15
发明作者:최정선；이호준；방상호；최광기
申请人:밍 루；주식회사 만도；
IPC主号:

专利说明:

Shock absorber for automobile cushion {SHOCK ABSORBER FOR AUTOMOBILES}
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorber for automobile shock absorbers, and more particularly, to a shock absorber for automobile shock absorbers incorporating a Teflon band capable of withstanding excessive shear loads on rods and pistons and uneven wear in the shock absorber. will be.
In general, the suspension is a device that connects the vehicle body and the wheel, and is composed of a spring for absorbing the impact on the road surface, a shock absorber for adjusting the operation of the spring, and an arm or a link for controlling the operation of the wheel.
The suspension is divided into two categories: a rigid axle suspension that connects the left and right wheels to the axle, and an independent suspension in which the left and right wheels operate respectively.
Rigid axle suspensions include parallel leaf springs, deiones, linkages, and torque tube drives.Independent suspensions include swing arms, double wishbones, and McPherson struts. There is also an air spring or a fluid spring to transmit, such a suspension to reduce the shock and vibration received from the road surface while driving to improve the comfort and stability of the car.
Its configuration consists of a suspension member connected to the wheel assembly, a shock absorber that controls the natural vibration of the chassis spring and the chassis spring to improve ride comfort, and a stabilizer that prevents rolling of the vehicle.
The shock absorber, which is an especially important component, is also called an oil damper, and oil is injected into the lower cylinder of two cylinders of different diameters, and the cylinders seem to have a mutual piston action. The other two valves are configured to control the flow of oil to adjust the expansion and contraction of the piston and to suppress the bounds of the vehicle.
Twin tube type using two cylinders as described above, the inner tube is inserted into the base cell (BASE SHELL), the piston is inserted into the inner tube, wherein the metal ring around the piston is inserted into the inner tube It was used to attach or to combine metal ring and Teflon material to prevent friction noise caused by friction between metal and metal and to improve wear resistance.
In particular, it was used to solve the problem of friction noise caused by the friction between the inner wall of the tube and the piston inserted into the base cell to maintain the quietness of the vehicle.
In order to solve this problem, a plastic material called Teflon with excellent lubricity was applied to the piston, but a simple plastic material called Teflon alone is difficult to satisfy the strength and lubricity, and an additive that increases lubricity and strength is used. In other words, graphite and special filters were added to improve lubricity and carbon fiber was added to improve strength.
However, the addition of such a simple additive has some effects on lubricity and strength, but the defect of the Teflon band material caused by the shear load causes a defect in the product, and therefore, it is necessary to regulate additional additives.
Therefore, the state of derivation load test results based on the regulation of the additives of the Teflon band that can withstand such shear load is as follows.
First, 100% defects occurred when using 15% flaky graphite with Teflon + particle size less than 150㎛, and second, 5% flaky graphite with 10% special filter with Teflon + particle size below 150㎛ In the case of using, 100% of defects occurred. Thirdly, in case of using 15% spherical graphite (the ratio of spheroidized graphite is 60%) of Teflon + particle size of 100 μm, 60% of the defects did not escape. Indicated.
The release load test mentioned above is a test to check whether the shock absorber is damaged within a given time while operating the shock absorber at a certain cycle under a certain lateral load. Even if the material has excellent lubrication characteristics, the product must function without lateral load. Will be.
As described above, when heavy lateral loads and axial loads act on the shock absorber as the vehicle's high speed and high load progress, excessive shear load is applied to the piston and rod of the shock absorber shock absorber. Due to repeated friction between the Teflon band and the inner tube, the Teflon material is separated or wears off, and the Teflon band is severely torn, causing various problems such as loss of product function.
Therefore, the present invention has been made to solve the above problems, improve the material of Teflon used in shock absorber shock absorbers for automobiles, even in the state of applying a lateral load to the shock absorber in a constant cycle to the piston to It is an object of the present invention to provide a shock absorber for automobile cushioning that does not cause the Teflon band material to be wrapped off.
1 is a cross-sectional view showing the structure of a shock absorber shock absorber of the present invention
2 is an enlarged view showing the main part of the present invention.
Explanation of symbols on the main parts of the drawings
10: shock absorber 12: base cell
14 tube 16 piston
18: Teflon band
The shock absorber shock absorber of the present invention is a Teflon band in a shock absorber shock absorber comprising a tube inserted into the base cell and a Teflon band material enclosed around the piston inserted into the tube. 18) It is characterized by adding 10-15% spherical graphite (graphite) to the material.
The particle size of the spherical graphite (graphite) used in the Teflon band 18 is characterized in that 100 ~ 40㎛.
The composition ratio of the particle size of the spherical graphite (graphite) is characterized by consisting of an additive of 80% or more.
It is characterized in that the proportion of the spheroidized particles of the spherical graphite (graphite) consists of an additive of 80% or more.
Hereinafter, a shock absorber shock absorber of the present invention with reference to the accompanying drawings in more detail.
In the shock absorber shock absorber for a vehicle comprising a tube 14 inserted into the base cell 12 and a Teflon band 18 material wrapped around the piston 16 inserted into the tube 14. In the above, the Teflon band material is formed by adding 10-15% of spherical graphite (graphite), and the particle size of the spherical graphite (graphite) used in the Teflon band is 100-40 µm, and the spherical graphite (graphite) The compositional ratio of the particle size is made up of an additive of 80% or more, and is formed of an additive such that the proportion of spherical particles is 80% or more.
1 is a cross-sectional view showing the structure of a shock absorber shock absorber of the present invention, Figure 2 is an enlarged view showing the main part of the present invention.
The shock absorber 10, which serves as a shock absorber for the vehicle, is formed by inserting a tube 14 having a smaller diameter inside the cylindrical base cell 12.
Inside the tube 14, a piston rod 20 having a piston 16 is inserted into one end thereof, and the piston 16 is installed to be movable up and down along the piston rod 20.
In addition, the outer peripheral surface of the piston 16 is surrounded by a teflon band 18, the teflon band 18 can prevent the friction between the outer peripheral surface of the piston 16 and the inner surface of the tube 14 and reduce the wear rate. It is installed so that it can be lubricated and sliding at the same time.
The Teflon band 18 uses a material of good quality that has passed the breakaway load test.
That is, it is composed of 15% spherical graphite having a Teflon + particle size of 60 µm or less, 10% spherical graphite having a Teflon + particle size of 60 µm or less, and spheroidal graphite having a Teflon + particle size of 100 µm or less. The ratio is 80%, and the drop load test result is 100%.
In addition, Teflon + spherical graphite (particle) with a particle size of 10㎛ or less is used as the 80% of the load test results.
The present invention as described above is excellent in the lubrication characteristics when adopted in shock absorbers, even if the celebratory action in the state under the lateral load does not occur the separation of the material is improved durability and can be used for a long time.
As described above, the shock absorber shock absorber of the present invention by using the Teflon band material in the shock absorber to achieve a smooth cushioning effect of the car and at the same time does not occur the departure of the material, so the durability of the device This has the advantage of superior and long life.

权利要求:
Claims (4)
[1" claim-type="Currently amended] In the shock absorber shock absorber comprising a tube inserted into the base cell and a Teflon band material wrapped around the piston inserted into the tube,
Shock absorbing shock absorber, characterized in that the addition of 10-15% spherical graphite (graphite) to the Teflon band material.
[2" claim-type="Currently amended] 2. The shock absorber for automobile shock absorbers according to claim 1, wherein the particle size of the spherical graphite used in the teflon band is 100-40 mu m.
[3" claim-type="Currently amended] 2. The shock absorber for automobile shock absorbers according to claim 1, wherein an additive having a composition ratio of the particle size of the spherical graphite is 80% or more.
[4" claim-type="Currently amended] 2. The shock absorber for an automobile shock absorber according to claim 1, wherein the proportion of the spherical graphite particles is 80% or more.

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同族专利:

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公开号 | 公开日

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KR100542071B1|2006-01-12|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1999-02-12|Application filed by 밍 루, 주식회사 만도

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1999-02-12|Priority to KR19990005134A

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2000-09-15|Publication of KR20000056106A

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2006-01-12|Application granted

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2006-01-12|Publication of KR100542071B1

优先权:

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申请号 | 申请日 | 专利标题

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KR19990005134A|KR100542071B1|1999-02-12|1999-02-12|Shock absorber for automobiles|