KR200324029Y1 - Shock absorber device - Google Patents

Abstract

The present invention relates to a shock absorber device for preventing the vibration of the vehicle. The shock absorber device according to the present invention is a stabilizer shock up shock absorber 20 coupled to the upper end of the coupling guide 10 and the coupling guide 10 is fixed between the axle lower housing (A) and the frame of the vehicle, and A pulley 40 installed on the upper end of the stabilizer shock up bar 20 and the compression coil spring 30 for the buffering action with the stabilizer shock up bar 20; It comprises a wire rope 50 over the pulley 40 is coupled to the coupling guide 10 and the axle housing (A). In addition, when the wire rope 50 moves around the pulley 40 while the pulley 40 moves upward, the bracket 41 coupled to the pulley 40 is connected to the stabilizer shock-up shock absorber 20. While pressing the upper body, the shock can be absorbed by the hydraulic pressure inside the stabilizer shock pressure bar 20.

Description

Shock absorber device {Shock absorber device}

The present invention is assembled with a coiled spring or leaf spring between the body and the tire of the vehicle to reduce the vibration, and the hydraulic shock bar to reduce the risk of rollover accident due to the vehicle's tipping during rotation Among them is a stabilizer shock absorber (stabilizer shock absorber).

Hydraulic shock bars are mostly used in passenger cars and small vans to improve ride quality, but large vans are frequently used due to the weight of cargo and are not used due to lack of installation space.

In the case of large trucks, hydraulic shock absorbers are sometimes used together with leaf springs, but hydraulic shock absorbers were often unable to serve due to the limitation of piston rod stroke and excessive eccentric force. In addition, when the impact of the road surface, the hydraulic shock absorber does not work, but the spring shrinks and expands at the time of expansion. The body will tilt and the vehicle will tip.

The present invention, in order to solve the above problems, in contrast to the conventional hydraulic shock bar to reduce the compressive force when the spring is rapidly compressed, the operation of the stabilizer shock up shock bar to catch the rapid expansion of the spring when the spring is inflated By constructing the direction, the car body can operate stably even during high speed driving and sharp curve rotation.

In addition, by using the principle of the pulley it is possible to lengthen the stroke distance of the piston rod, so that it is possible to install and use the stabilizer shock absorber according to the present invention even in a narrow space.

1 is a block diagram of a vehicle equipped with a stabilizer shock up bar according to the present invention

2 is a block diagram of a stabilizer shock up bar according to the present invention

3 is a detailed view of the coupling guide used in the present invention

4 is a detailed view of the stabilizer shock up bar of FIG.

FIG. 5 shows the valve assembly V taken along AA ′ in FIG. 4.

* Description of the symbols for the main parts of the drawings *

10 ..... Joining guide 13 ..... Bottom plate

20 ..... Stabilizer Shock Absorber 21 ..... Spring Seat

30 ..... compression coil spring 40 ..... pulley

41 ..... Bracket 43 ..... Fixture

50 ..... Wire Rope 51 ..... Connecting Shaft

53 ..... Crimping Pin 61 ..... Piston Rod

69 ..... bypass hole 70 ..... cylinder body

71 ..... Inner cylinder 72 ..... Upper chamber

73 ..... Auxiliary oil loss 74 ..... Lower oil loss

75, 76 .. Orifice 78 ..... Piston

79 ..... Screw 80 ...... Plate

A ........ Axle Housing V ....... Valve Assembly

The shock absorber device operating in the reverse direction according to the present invention for achieving the above object, as a shock absorber device mounted between the vehicle axle housing and the vehicle lower frame; A coupling guide fixed at an upper surface and a side frame of the vehicle lower frame; It is fastened to the lower plate of the coupling guide, the piston rod is inserted into the center, there is a high viscosity oil therein, the piston can absorb the shock while moving up and down between the high viscosity oil, elastic support downward by the compression coil spring Stabilizer and shock absorber; A compression coil spring installed outside the stabilizer shock up bar; A pulley fixedly installed by a bracket at an upper end of the stabilizer shock up bar; A wire rope that spans the periphery of the pulley so that one side is fastened to the coupling guide and the other side is fastened to the axle housing of the vehicle; When the wire rope moves around the pulley while the pulley moves upward, the bracket coupled with the pulley presses the upper part of the stabilizer shock up bar, absorbing the shock by the hydraulic pressure inside the stabilizer shock pressure bar. It can be characterized by.

Next, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view of a shock absorber 100 equipped with a stabilizer shock-up shock bar 20 according to the present invention mounted on a vehicle, the present invention being provided on an axle housing A and a vehicle lower frame F3 of a vehicle; The state where the shock absorber 100 of the shock absorber 100 is mounted is shown.

2 is a cross-sectional view of the entire shock-up shock absorber device 100 including a stabilizer shock-up shock bar according to the present invention. As shown, the device of the present invention is attached to the upper portion of the lower frame (F3), the coupling guide 10 for installing the shock absorber device 100, and the stabilization fastened to the coupling guide 10 A riser shock absorber 20, a compression coil spring 30 installed outside the stabilizer shock absorber 20, and a pulley 40 installed at an upper end of the stabilizer shock absorber 20; Spread around the pulley 40, one side is fastened to the coupling guide 10 and the other side includes a wire rope 50 is fastened to the axle housing (A) of the vehicle. The wire rope 50 is connected to and fixed to the coupling guide 10 and the axle housing A through the connecting shaft 51 and the pressing pin 53.

Here, the stabilizer shock-up shock absorber 20 is the same as that described in the Republic of Korea Patent Registration 10-0347335 is used, the inside of the high density of oil (oil) is filled can act as a hydraulic shock absorber.

Meanwhile, the coupling guide 10 attached to the upper portion of the lower frame F3 and installed with the shock absorber 100 is shown in detail in a perspective view in FIG. 3. The coupling guide 10 includes a lower plate 13 bolted to the lower frame F3 and a sidewall 11 bolted to the side wall frame F2, and a triangular guide 11a on each side thereof. ) Is formed. In addition, the lower plate 13 is provided with a wire through hole 13a through which the wire rope 50 penetrates and a stabilizer shock absorber through hole 13b, respectively. Therefore, the stabilizer shock-up shock bar 20 is coupled to the coupling guide 10 through the shock-up shock bar through hole 13b of the lower plate 13 and fastened to the final lower frame F3.

2 and 3, a spring sheet 21 is attached to an upper portion of the stabilizer shock-up shock absorber 20, and the compression coil is disposed between the spring sheet 21 and the lower cover plate 13. The spring 30 is interposed. In addition, the piston rod 61 of the stabilizer shock up bar 20 is directly connected to the lower portion of the spring seat 21.

Meanwhile, a pulley 40 and a bracket 41 for supporting the pulley 40 are installed on the spring sheet 21 on the spring sheet 21. And the upper portion of the fastening body 45 is provided with a pulley 40 via the bracket 41, the pulley 40 is a 'c' shaped bracket 41 by the penetration of the fastener (43) Rotatably coupled.

Then, the wire rope 50 is formed to flow through the pulley 40 and the vertical movement of the axle housing (A). The wire rope 50 is made of a lang's lay of a plurality of metal wires, it is used that can withstand shear stress of several tens of tons. And one end of the wire rope 50 is coupled to the lower plate 13 of the coupling guide 10 and the other end is coupled to the axle housing (A). Here, the end of the wire rope 50 coupled to the coupling guide 10 is crimped to the connecting shaft 51 formed with a screw, the connecting shaft 51 is based on the lower plate 13 of the coupling guide 10 The nut is coupled to the upper and lower ends by using fasteners C1 and C2. The end of the wire rope 50 coupled to the axle housing A is connected to the fastener C3 fastened to the axle housing A with bolts and pressed by the crimping piece 53.

Meanwhile, the basic tension of the wire rope 50 may be set by the fasteners C1 and C2 fastened by nuts. In other words, in order to adjust the tension of the wire rope 50, the fasteners (C1, C2) are easily achieved by moving the connecting shaft (51) up and down by loosening or reverse tightening, respectively.

Therefore, the movement of the wire rope 50 can be delivered to the stabilizer shock-up shock absorber 20 as it is, so that the stabilizer shock-up shock absorber 20 can be effectively reacted to severe unevenness. For example, when the wheel is moved upward by the convex part of the driving car, the axle housing A moves as well, and the moving distance is transmitted to the pulley 40 through the wire rope 50. Will be

FIG. 4 is a detailed view of the stabilizer shock up bar 20 of FIG. 2, which includes a cylindrical cylinder body 70 that can fit into the compression coil spring 30 of the vehicle and is filled with high viscosity oil.

In addition, a piston rod 61 for vertically reciprocating motion is installed in the cylinder body 70, and a piston 78 for reciprocating motion in the cylinder body 70 is attached to a lower end of the piston rod 61. It is. In addition, an upper oil chamber 72 is formed at an upper portion of the piston 78, and a lower oil chamber 74 is formed at a lower portion of the piston 78. An inner cylinder 71 is installed between the cylinder body 70 and the piston rod 61, and a separate auxiliary oil chamber 73 is formed in the hollow portion between the inner cylinder 71 and the cylinder body 70. do.

In addition, orifices 75 and 76 are positioned at upper and lower portions of the inner cylinder 71, respectively. The orifices 75 formed at the bottom communicate with the lower oil chamber 74 and the auxiliary oil chamber 73, and the orifices 76 formed at the upper portion thereof. ) Is in communication with the upper oil chamber 72 and the auxiliary oil chamber 73 to move the high viscosity oil in accordance with the movement of the piston (78). And the valve assembly (V) is mounted on the lower oil chamber 74 side of the piston (78).

FIG. 5 is a detailed cross-sectional view of the valve assembly V, and is taken along line AA ′ in FIG. 4. Here, the valve assembly (V) has a shape in which one end of the plate 80 is fixed on the piston by a screw, and the other end covers a pair of bypass holes 69 formed at its lower portion with a free end. Therefore, when the piston moves upward, the oil may move in the opposite direction through the bypass hole 69. On the contrary, when the piston moves downward, the plate 80 seals the bypass hole 69. This prevents the movement of oil.

Hereinafter, the operation of the stabilizer shock up bar according to the present invention will be described in detail with reference to FIGS. 2 to 5.

First, when an impact is transmitted to the wheels of the vehicle while driving, the wheels of the vehicle ascend upwards and at the same time the axle housing is also raised. In this case, the wire rope 50 is relatively loosened so that the wire rope 50 is moved by a predetermined distance around the pulley 40, and as a result, the pulley 40 is moved upward by the compression coil spring 30. Axle housing (A) will be moved by 1/2 of the stroke. That is, the compression coil spring 30 is restored to its original state as it is elongated. At this time, the stabilizer shock-up shock bar 20 must suppress the sudden expansion of the compression coil spring 30 so that the shock can be absorbed.

When the wheel is impacted in this way, the piston rod 61 directly connected to the lower portion of the spring seat 21 rises as the pulley 40 rises, and at the same time, the valve assembly V mounted on the piston 78. The plate 80 is opened, and the high-viscosity oil in the upper oil chamber 72 moves through the bypass hole 69 and appears as a damping force to suppress the rise of the piston rod 61 by the throttling phenomenon. In addition, a portion of the high viscosity oil in the upper oil chamber 72 is also moved to the auxiliary oil chamber 73 through the upper orifice 76 of the inner cylinder 71, while the rise of the piston rod 61 is also caused by the throttling phenomenon. It is suppressed to give proper damping force.

Next, when the impact of lifting the wheel of the vehicle to the upper side is released, it acts in the direction of compressing the compression coil spring 30 at this time the pulley 40 is moved downward. At this time, the body of the stabilizer shock up bar 20 is pushed down by the downward movement of the pulley 40 and the movement of the wire rope 50 in contact with the pulley 40. In this operation, the plate 80 of the valve assembly (V) closes the bypass hole 69 by the lowering of the piston 78, the high viscosity oil in the piston lower oil chamber 74 of the inner cylinder (71) While moving to the auxiliary oil chamber 73 through the lower orifice 75, the damping force is generated so that the lowering of the piston rod 61 is suppressed by the throttling action.

In addition, the oil moved to the auxiliary oil chamber (73) is introduced into the upper oil chamber (72) through the upper orifice (76), the throttling occurs again to act as an appropriate damping force. In this way, the vibration of the wheel due to the impact can be absorbed by the appropriate damping force through the valve assembly (V) and the orifices (75, 76) mounted on the piston (78).

As described above, the present invention can provide smoother absorbing power when the vehicle is impacted, and more smoothly when the wheel moves downwards (when it returns to its original state after being shocked). You can move smoothly.

And within the scope of the basic technical idea of the present invention described above, many other modifications are possible to those of ordinary skill in the art.

As described above, the shock absorber device according to the present invention reduces the compressive force when compressing the spring and catches the rapid expansion of the spring when the spring is inflated, so that the vehicle body can be stably operated even at high speed driving and sudden curve rotation of the vehicle. In addition, since the wire rope is moved by the pulley, the stroke distance of the piston rod can be lengthened, so that the shock-up shock absorber device can be installed and used according to the present invention even in a narrow installation space, and its use range is wide.

Claims (2)

As a shock absorber device mounted between the axle housing (A) of the vehicle and the vehicle lower frame (F3); A coupling guide 10 fixed to an upper surface and a side frame F2 of the vehicle lower frame F3; It is fastened to the lower plate 13 of the coupling guide 10, the piston rod 61 is inserted into the center, a high viscosity oil is built in the piston 78 to absorb the shock while moving up and down between the high viscosity oil. A stabilizer shock-up shock bar 20 which is elastically supported downward by the compression coil spring 30; A compression coil spring 30 installed outside the stabilizer shock up bar 20; A pulley 40 fixedly installed by a bracket 41 at an upper end of the stabilizer shock up bar 20; A wire rope 50 spanning the periphery of the pulley 40 and one side is fastened to the coupling guide 10 and the other is fastened to the axle housing A of the vehicle; When the wire rope 50 moves around the pulley 40 while the pulley 40 moves upward, the bracket 41 coupled with the pulley 40 is the body of the stabilizer shock absorber 20. The shock absorber device, characterized in that the shock can be absorbed by the hydraulic pressure inside the stabilizer shock-up shock bar 20 while pressing the upper portion. The shock absorber device according to claim 1, wherein the piston (78) is equipped with a valve assembly consisting of a plate and a bypass hole.