KR20170042911A

KR20170042911A - Suspension

Info

Publication number: KR20170042911A
Application number: KR1020150142115A
Authority: KR
Inventors: 김형진
Original assignee: 태평양정기(주)
Priority date: 2015-10-12
Filing date: 2015-10-12
Publication date: 2017-04-20
Also published as: WO2017065343A1

Abstract

The present invention relates to a suspension, and more particularly to a suspension which is capable of easily absorbing even a small load.
The suspension according to the present invention comprises first cylinder means, second cylinder means and connecting means. The first cylinder unit includes a first guide bush, a first outer cylinder slidably inserted into the first guide bush, and a second outer cylinder that receives the fluid and moves integrally with the first outer cylinder, An inner cylinder mounted inside the outer cylinder; a first piston slidably mounted at an inlet of the inner cylinder so as to pressurize the fluid; one end fixed to the first guide bush and the other end fixed to the first And a piston rod fixed to the piston. The second cylinder means includes a second guide bush, a second outer cylinder slidably inserted into the second guide bush, and a second outer cylinder mounted on the second outer cylinder so as to seal the inside of the second outer cylinder An air chamber cap, a chamber rod having one end fixed to the air chamber cap and the other end fixed to the second outer cylinder, and a second piston mounted inside the second outer cylinder so as to slide along the chamber rod Respectively. Wherein when the inner cylinder is compressed by the first piston, the fluid accommodated in the inner cylinder flows into one side of the second outer cylinder partitioned by the second piston, so that the second piston moves to the second outer cylinder, And one side of the second outer cylinder is connected to press the other side of the cylinder.

Description

Suspension {Suspension}

The present invention relates to a suspension, and more particularly to a suspension which is capable of easily absorbing even a small load.

In the case of a two-wheeled vehicle such as an automobile or a motorcycle, a suspension is mounted for shock absorption. At this time, the suspension contains fluid (oil) in one cylinder and air is built in the other cylinder, so that they are compressed to cushion and restore the shock.

Japanese Patent Application No. 10-1240165 discloses a suspension for a two-wheeled vehicle in which a user can adjust the strength of a suspension by providing a valve capable of controlling the amount of fluid movement from the fluid storage portion to the air storage portion.

Registration No. 10-1240165 (Registration date February 27, 2013)

In the case of the conventional suspension, when the external impact is applied, the stationary piston 13 pressurizes the fluid in the fluid reservoir 12, causing the fluid in the fluid reservoir 12 to move to the air reservoir 15 The flow piston 17 compresses the air in the air storage portion 15. At this time, since the sectional area of the fixed piston 13 and that of the floating piston 17 are the same, there is a problem that the suspension disclosed in the related art can not properly absorb the external impact and transmits the impact.

The present invention is intended to solve the above problems. An object of the present invention is to provide a suspension capable of sufficiently absorbing an impact by increasing the amount of displacement of a suspension even when the same impact load is externally applied by making the pressure area of the fluid smaller than the pressure area of the air.

The suspension according to the present invention comprises first cylinder means, second cylinder means and connecting means. The first cylinder unit includes a first guide bush, a first outer cylinder slidably inserted into the first guide bush, and a second outer cylinder that receives the fluid and moves integrally with the first outer cylinder, An inner cylinder mounted inside the outer cylinder; a first piston slidably mounted at an inlet of the inner cylinder so as to pressurize the fluid; one end fixed to the first guide bush and the other end fixed to the first And a piston rod fixed to the piston. The second cylinder means includes a second guide bush, a second outer cylinder slidably inserted into the second guide bush, and a second outer cylinder mounted on the second outer cylinder so as to seal the inside of the second outer cylinder An air chamber cap, a chamber rod having one end fixed to the air chamber cap and the other end fixed to the second outer cylinder, and a second piston mounted inside the second outer cylinder so as to slide along the chamber rod Respectively. Wherein when the inner cylinder is compressed by the first piston, the fluid accommodated in the inner cylinder flows into one side of the second outer cylinder partitioned by the second piston, so that the second piston moves to the second outer cylinder, And one side of the second outer cylinder is connected to press the other side of the cylinder.

Further, in the suspension according to the present invention, it is preferable that the cross-sectional area of the inner cylinder is smaller than the cross-sectional area of the second outer cylinder.

According to the present invention, the cross-sectional area of the inner cylinder is smaller than the cross-sectional area of the second outer cylinder. Thus, even if the air inside the second outer cylinder is compressed small, the stroke of the first piston for compressing the fluid of the inner cylinder becomes large. Therefore, if a load is applied to the suspension of the present invention from the outside, even if the load is small, the first cylinder means shrinks greatly and the shock can be sufficiently absorbed. Therefore, when the same impact load is applied to the suspension of the present invention, the amount of shrinkage displacement of the suspension becomes larger than that of the conventional suspension, so that the shock can be smoothly absorbed.

1 is a conceptual view of an embodiment of a suspension according to the present invention;
Fig. 2 is a conceptual view in which the suspension of Fig. 1 is contracted.

One embodiment of a suspension according to the present invention will be described with reference to FIGS. 1 and 2. FIG.

The suspension according to the present invention is used for absorbing impacts on a two-wheeled vehicle such as a bicycle or a motorcycle. To this end, the suspension comprises a first cylinder means 10, a second cylinder means 20 and a connecting means 30.

The first cylinder means 10 includes a first guide bush 11, a first outer cylinder 13, an inner cylinder 15, a first piston 17 and a piston rod 19.

The first guide bush 11 may have a cylindrical shape and may be installed on the front wheel shaft of a bicycle or the like.

The first outer cylinder 13 is slidably inserted into the first guide bush 11.

The inner cylinder 15 receives the fluid 1 such as oil which generates hydraulic pressure therein and is mounted inside the first outer cylinder 13 so as to move integrally with the first outer cylinder 13. Since the inner cylinder 15 is mounted inside the first outer cylinder 13, the diameter of the inner cylinder 15 is smaller than the diameter of the first outer cylinder 13. [

The first piston (17) is slidably mounted to the inlet of the inner cylinder (15) so as to pressurize the fluid (1) contained in the inner cylinder (15).

The piston rod 19 has one end fixed to the guide bush 11 and the other end fixed to the first piston 17. [

Therefore, when the first outer cylinder 13 is lowered as shown by the arrow 3, the inner cylinder 15 also descends as shown by the arrow 3 in the first cylinder means 10. And the first piston (17) is fixed by the piston rod (19), so that the inner part of the inner cylinder (15) is compressed.

The second cylinder means 20 includes a second guide bush 21, a second outer cylinder 23, an air chamber cap 25, a chamber rod 27 and a second piston 29.

The second guide bush 21 may be formed in the same cylindrical shape as the first guide bush 21 on the front wheel shaft of a bicycle or the like.

The second outer cylinder 23 is slidably inserted into the second guide bush 21 in the same manner as the first outer cylinder 13. In this embodiment, the second outer cylinder 23 is formed to have the same diameter as the first outer cylinder 13. Thus, the diameter of the second outer cylinder 23 is larger than the diameter of the inner cylinder 15.

The air chamber cap 25 is mounted on the second outer cylinder 23 to seal the inside of the second outer cylinder 23.

The chamber rod 27 serves to move the air chamber cap 25 together with the second outer cylinder 23. That is, the chamber rod 27 serves to fix the air chamber cap 25 to the second outer cylinder 23. To this end, the chamber rod 27 is fixed at one end to the air chamber cap 25 and at the other end to the inner surface of the second outer cylinder 23.

The second piston 29 serves to compress air inside the second outer cylinder 23 and is mounted inside the second outer cylinder 23 so as to slide along the chamber rod 27. [ When the second piston 29 is mounted inside the second outer cylinder 23, the interior of the second outer cylinder 23 is partitioned into two chambers by the second piston 29. The lower chamber between the second piston 29 and the air chamber cap 25 and the upper chamber between the inner surface of the second piston 29 and the second outer cylinder 23. [ At this time, when the second piston 29 slides along the chamber rod 27 in the direction of the air chamber cap 25 as indicated by an arrow 3, the gap between the second piston 29 located in the lower chamber and the air chamber cap 25 The air is compressed.

The connecting means 30 is configured such that when the inner cylinder 15 is compressed by the first piston 17, the fluid 1 contained in the inner cylinder 15 presses the second piston 17, So that the air inside the second outer cylinder 23 is compressed. To this end, the connecting means 30 is connected to the inner cylinder 15 so that the fluid 1 in the inner cylinder 15 can move to the upper chamber formed in the second outer cylinder 23, 2 outer cylinder 23. As shown in Fig. Thus, when the first guide bush 11 moves in the direction of the arrow 3, the fluid 1 moves in the direction of the arrow 5 and presses the second piston 29.

The first outer cylinder 13 and the second outer cylinder 23 move in the direction of the arrow 3 when a load is externally applied during traveling. Since the first piston 17 is fixed by the piston rod 19 so that the inner cylinder 15 is compressed so that the fluid 1 in the inner cylinder 15 flows through the connecting means 30 to the second outer cylinder 23). &Lt; / RTI > The moved fluid 1 pressurizes the second piston 29 and the second piston 29 moves in the direction of the air chamber cap 25 to move the lower portion between the second piston 29 and the air chamber cap 25 Press the room.

At this time, the diameter of the inner cylinder 15 is smaller than the diameter of the second outer cylinder 23. The distance that the second piston 29 moves to compress the lower chamber of the second outer cylinder 23 is smaller than the distance that the first piston 17 moves to press the inside of the inner cylinder 15. [ Therefore, the amount of movement of the first piston 17 can be increased. That is, the first piston 17 can sufficiently move even under a small load from the outside. So you can enhance the suspension function. Therefore, the amount of movement of the first piston 17 can be increased. That is, the first piston 17 can sufficiently move even under small load to the outside. So you can enhance the suspension function. Therefore, when the same full load is applied to the suspension of the present invention, the suspension can be more shrunk and operated smoothly as compared with the conventional suspension.

1: Fluid 10: First cylinder means
11: first guide bush 13: first outer cylinder
15: Inner cylinder 17: First piston
19: piston rod 20: second cylinder means
21: second guide bush 23: second outer cylinder
25: air chamber cap 27: chamber rod
29: second piston 30: connecting means

Claims

A first guide cylinder having a first guide bush, a first outer cylinder slidably inserted into the first guide bush, and a second outer cylinder receiving fluid therein and being mounted inside the first outer cylinder so as to move integrally with the first outer cylinder A first piston fixed to the first guide bushing at one end and a piston rod fixed at the other end to the first piston so as to be slidable at an inlet of the inner cylinder so as to pressurize the fluid; A first cylinder means having a first cylinder,
An air chamber cap mounted on the second outer cylinder so as to seal the inside of the second outer cylinder; a first guide cylinder having a first end, A second cylinder unit having a chamber rod fixed to the air chamber cap and the other end fixed to the second outer cylinder and a second piston mounted inside the second outer cylinder so as to be able to slide along the chamber rod, and,
When the inner cylinder is compressed by the first piston, the fluid accommodated in the inner cylinder flows into one side of the second outer cylinder partitioned by the second piston, so that the second piston moves to the other side of the second outer cylinder And connecting means for connecting the inner cylinder and one side of the second outer cylinder to press the inner cylinder and the second outer cylinder.

The method according to claim 1,
Wherein a cross-sectional area of the inner cylinder is smaller than a cross-sectional area of the second outer cylinder.