KR101663293B1

KR101663293B1 - Air tube and springs combine car of shock absorbers

Info

Publication number: KR101663293B1
Application number: KR1020150038780A
Authority: KR
Inventors: 고재원
Original assignee: 고재원
Priority date: 2015-03-20
Filing date: 2015-03-20
Publication date: 2016-10-07
Also published as: KR20160112660A

Abstract

The present invention provides an air tube between a spring and a shock absorber so that impact transmitted from an automobile is primarily reduced in the spring and secondarily relaxed in the air tube, To a shock absorber of an automobile in which an air tube and a spring are combined so that impact noise is alleviated.
To this end, according to the present invention, there is provided a shock absorber for an automobile, which is equipped with a spring on a body of a shock absorber and an air tube having an air tube coupled with the body of the shock absorber separately from the spring, A lower portion of the tube is provided with a bottom portion to be placed on a receiving portion provided at the outer periphery of the body of the shock absorber, and a spring receiving portion having a lower end of the spring is provided at an upper portion thereof; The air tube is characterized in that a plurality of inner convex portions and inner concave portions are continuously provided on the inner periphery and an outer convex portion and an outer concave portion corresponding to the inner convex portion and the inner concave portion are provided on the outer periphery, have.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a shock absorber for an air tube and a sprue,

The present invention relates to a shock absorber of an automobile in which an air tube and a spring are combined. More particularly, the present invention relates to an air tube provided between a spring and a shock absorber so that an impact transmitted from an automobile is primarily reduced in a spring, To a shock absorber of an automobile in which an air tube and a spring are combined so that shock noise is alleviated because the vibration is reduced and the impact received by the spring is canceled by the air tube.

When the vehicle is running, the suspension controls the body movement in braking, deceleration, and turning motion, and controls the wheel movement according to the unevenness of the road surface. These suspensions include a shock absorber to reduce wheel motion. However, prior art shock absorbers typically have a structure that operates hydraulically or pneumatically. Therefore, these shock absorbers are important for the operation of the shock absorbers because the fluid and gas or air seals used are important for the operation of the shock absorbers. As the shock absorbers are used for a long time, these seals are damaged, Is lowered.

In view of this, the conventional patent No. 2012-0118760 allows the garage to be maintained and adjusted by the spring and the air so that the garage by the spring can be maintained even if the puncture or damage of the tire or the failure of the air compressor occurs The air suspension for a vehicle has been proposed.

However, according to the conventional technology, since the inner cover and the outer cover are fixed to the inner and outer sides of the upper and lower structures by bundling and fixing the outer cover and the outer cover with a fixing band, the structure is complicated and the air pressure is continuously supplied from the compressor. And the like.

An object of the present invention is to provide an air tube between a spring and a shock absorber to reduce a shock transmitted from an automobile to a primary reduction in a spring and to mitigate a secondary So that the impact is reduced and the impact received by the spring is canceled by the air tube, thereby providing a shock absorber of a vehicle in which an air tube and a spring are combined.

To this end, according to the present invention, there is provided a shock absorber for an automobile, which is equipped with a spring on a body of a shock absorber and an air tube having an air tube coupled with the body of the shock absorber separately from the spring, A lower portion of the tube is provided with a bottom portion to be placed on a receiving portion provided at the outer periphery of the body of the shock absorber, and a spring receiving portion having a lower end of the spring is provided at an upper portion thereof; The air tube is characterized in that a plurality of inner convex portions and inner concave portions are continuously provided on the inner periphery and an outer convex portion and an outer concave portion corresponding to the inner convex portion and the inner concave portion are provided on the outer periphery, have.

According to the present invention, an automobile is supported by a spring provided on an upper portion of a shock absorber, and an air tube is inserted in the middle so that the spring and the body of the shock absorber are not in direct contact with each other. The air tube is formed in a cylindrical shape. The inner and outer sides of the air tube are alternately formed with convex and concave parts. When the air tube is impacted, the convex part is compressed toward the concave part and the height is lowered.

The concave portion is provided with a connecting portion inside to prevent the inside and outside concave portions from being opened when receiving a force. Since the convex portions have no means for connecting the inside and the outside, the inside is formed as a hollow space in the form of a tube, and acts as a damper to mitigate the shock when the inside is hollow. In addition, a plurality of passages for communicating with the convex portions are formed in the connection portion, thereby forming a single tube as a whole. Therefore, when air is injected into the air inlet from either side, the air tube is entirely filled with air.

Therefore, impact transmitted from the spring is not transmitted directly to the body of the shock absorber, but is relieved at the convex portion of the air tube, so that shock noise is not generated and vibration is mitigated.

In addition, since the degree of relieving the vibration varies depending on the air filling degree of the air tube, there is an advantage that the optimum ride feeling can be maintained by adjusting the air pressure according to the weight of the automobile. Especially, the air tube has the convex portion and the concave portion Since the parts are formed of a single body, there is a convenience such that the assembling property is improved.

1 is a perspective view of a shock absorber incorporating an air tube according to an embodiment of the present invention;
2 is a perspective view of an air tube according to an embodiment of the present invention.
3 is a cross-sectional view of the air tube of one embodiment of the present invention

1 to 3, the air tube according to the embodiment of the present invention is formed in a cylindrical shape to be fitted in the shock absorber body 10. The inner convex portion 32 and the inner concave portion 33 are formed continuously in the inner periphery, The outer convex portion 34 and the outer concave portion 35 are continuously formed at positions corresponding to the convex portion 32 and the concave portions 33 at the outer periphery.

The inner and outer concave portions 33 and 35 are connected to each other through a connecting portion 36 so that the gap does not spread. The inner and outer convex portions 32 and 34 have no separate connecting means, And acts as a damper to mitigate the impact by spreading.

When the air is injected into the air inlet 40 formed in either one of the outer concave portions 35 by forming the passage 37 connecting the upper and lower convex portions 32 and 34, Air is filled into each convex portion 32 (34) along the passage (37).

The lower end of the air tube is provided with a cylindrical bottom portion 30 placed on a circular receiving portion 11 provided on the outer circumferential surface of the body 10 and a spring receiving portion 31 are provided in a cylindrical shape.

An embodiment of the present invention thus constructed is assembled as in FIG. First, the inner circumference of the air tube is fitted to the outer peripheral surface of the cylindrical shock absorber body 10. And the bottom surface portion 30 is placed on the receiving portion 11 formed on the outer peripheral surface of the body 10. [ Then, the spring 20 is fitted to the upper side of the body 10 and then placed on the spring receiving portion 31 provided at the upper end of the air tube.

The shock absorber is provided with a rod 12 on the upper side and is coupled to the undercarriage of the vehicle, and the lower end of the body 10 is connected to the frame supporting the wheel.

Therefore, the impact generated during the running of the vehicle is transmitted to the body 10 through the rod 12, so that the overall impact is reduced in the pneumatic or hydraulic system inside the body 10. [ Then, the remaining impact transmitted to the vehicle and the load of the vehicle are supported by the spring (20). At this time, the spring 20 is compressed and the impact is primarily relieved. The convex portions 32 and 34 of the air tube connected to the lower end of the spring 20 are compressed by the pneumatic pressure, .

The concave portions 33 and 35 are provided with a connecting portion 36 at an intermediate portion thereof so that they do not spread sideways and thus remain in a fixed state. However, the convex portions 32 and 34 are formed as a toothed space in which the middle portion is not connected, and serve as a damper because a constant air pressure is formed therein. Accordingly, the convex portions 32 and 34 are compressed according to the degree of the internal air pressure, thereby relieving the impact of the spring 20.

In addition, since the spring 20 does not directly contact the body 10 and the air tube is installed in the middle, the noise due to the impact of the spring is reduced. The convex portions 32 and 34 and the concave portions 33 ) Are made of a synthetic rubber material having elasticity and are injected into a single body from a single mold, there is no need to assemble the convex portion and the concave portion in the post-process, thereby improving the productivity.

10: body 11:
12: rod 20: spring
30: bottom surface portion 31: spring receiving portion
32: inner convex portion 33: outer convex portion
34: inner concave portion 35: outer concave portion
36: connection 37: passage
40: air inlet

Claims

The shock absorber according to any one of claims 1 to 3, wherein the shock absorber has a spring on an upper portion of the body of the shock absorber, and the air tube is coupled to the body of the shock absorber separately from the spring, And a spring receiving portion having a lower end of the spring is disposed at an upper portion thereof; Wherein the air tube has a plurality of inner convex portions and a plurality of inner concave portions as inner circumferences, an outer convex portion corresponding to the inner convex portion and the inner concave portion, and an air tube In a shock absorber of a vehicle combined with a spring,
The inner and outer concave portions are coupled through a connection portion to suppress volume expansion,
Wherein the connection portion includes a plurality of passages connecting the inner and outer convex portions,
And an air inlet for injecting air into the inner and outer convex portions is provided in one of the outer concave portions.

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