KR20030028910A - Apparatus for testing endurance of a shock absorber - Google Patents

Abstract

PURPOSE: An endurance testing apparatus for a shock absorber is provided to easily test the endurance of a shock absorber by simplifying the structure of the endurance testing apparatus. CONSTITUTION: An endurance testing apparatus includes a first disc(13) fixed to a driving shaft(12) of a motor(11). A first eccentric shaft is installed at the front of the first disc(13). A bearing is coupled to the first eccentric shaft. A rotating shaft(16) is installed parallel to the driving shaft(12) of the motor(11). Both sides of the rotating shaft(16) are rotatably supported by a supporter(17). A cam disc(18) is installed at one end of the rotating shaft(16). An elongated hole is formed at one side of the cam disc(18). A second disc(20) equipped with a second eccentric shaft is installed at the other end of the rotating shaft(16). A bearing is coupled to the second eccentric shaft.

Description

내구성 APPARATUS FOR TESTING ENDURANCE OF A SHOCK ABSORBER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endurance test apparatus for shock absorbers, and more particularly, to an endurance test apparatus for shock absorbers having a simple structure so that the durability of the shock absorber can be easily tested.

In general, the shock absorber serves to improve ride comfort by absorbing natural vibrations generated by the impact of the springs while the vehicle is driving, thereby rapidly damping vibrations.

The shock absorber is to absorb shock while repeatedly performing compression and tensioning according to the state of the road surface in the vehicle mounted state, and the speed at the time of compression and the speed at the time of tension are different from each other.

Therefore, in order to test the durability of the shock absorber in which the speed at the time of compression and the speed at the time of tension act differently, the durability of the shock absorber has been tested using the hydraulic system which can control a speed.

However, the conventional hydraulic pressure controllable system has a problem that the structure is complicated, expensive, and difficult to maintain.

The present invention is to solve the conventional problems as described above, the object is to provide a shock absorber durability test apparatus that can test the durability of the shock absorber with a simple structure.

In order to achieve the above object, the present invention, the first disc is fixed to the drive shaft of the motor and the first eccentric shaft is formed on the front surface, and the support shaft in parallel with a predetermined center deviation with the drive shaft of the motor A cam disc having a rotatable shaft rotatably supported, a cam disc fixed to one end of the rotatable shaft and having a long hole to which the first eccentric shaft of the first disc is movably coupled, and fixed to the other end of the rotatable shaft, A second disc having an eccentric shaft, a slider installed to be linearly movable along the guide rod, to which the rod of the shock absorber is coupled, one end of which is rotatably connected to the second eccentric shaft of the second disc, and the other end of which is To provide a shock absorber durability test apparatus comprising a connecting link rotatably connected to one side of the slider and a chamber in which the shock absorber is mounted. There is a gong.

1 is a side view schematically showing a partial ablation of the shock absorber durability test apparatus according to the present invention.

Figure 2 is a front view schematically showing the durability test apparatus of the shock absorber according to the present invention.

Figure 3 is an exploded perspective view showing the main portion of the durability test apparatus for shock absorbers according to the present invention.

4 and 5 is a reference diagram showing the operating state of the durability test apparatus of the shock absorber according to the present invention.

<Description of the code | symbol about the principal part of drawing>

11: motor 13: first disc

14: first eccentric shaft 16: rotation axis

18 Cam Cam 19 Long Hole

20: second disc 21: second eccentric shaft

24: slider 25: guide rod

26: connection link 30: chamber

31: Shock absorber 32: Shock absorber load

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partial cutaway side view schematically showing the durability test apparatus of the shock absorber according to the present invention, Figure 2 is a front view schematically showing the durability test apparatus of the shock absorber according to the present invention, Figure 3 is 4 and 5 are reference views showing the operating state of the durability test apparatus of the shock absorber according to the present invention.

1 to 3, in the durability test apparatus for shock absorbers according to the present invention, the first disc 13 is fixed to the drive shaft 12 of the motor 11, and the first disc 13 of the first disc 13 is fixed. The first eccentric shaft 14 is installed on one side of the front surface, and the bearing 15 is coupled to the first eccentric shaft 14.

In addition, the rotating shaft 16 is installed in a state parallel to the drive shaft 12 of the motor 11 with a predetermined center deviation, and both sides of the rotating shaft 16 are rotatably supported by the support 17 through the bearing.

One end of the rotating shaft 16 has a cam disc 18 having a long hole 19 formed at one side thereof to which the first eccentric shaft 14 of the first disc 13 is movably coupled through the bearing 15. The second disc 20 having the second eccentric shaft 21 is fixed to the other end of the rotating shaft 16, and the bearing 22 is coupled to the second eccentric shaft 21.

In addition, the slider 24 is installed on the front upper side of the rotary shaft 16 in a direction orthogonal to the rotary shaft 16 so as to be linearly movable along the guide rod 25, and the second eccentric shaft of the second disc 20. One end of the connection link 26 and the connection link 26 is rotatably connected through the bearing 22, and the other end of the connection link 26 is rotatably connected to one side of the slider 24 through the bearing 27. do.

And the slider 24 is coupled to the rod 32 of the shock absorber 31 mounted in the chamber 30. Here, the rod shock absorber rod 32 may be coupled to the slider through a separate connecting rod.

In the durability test apparatus of the shock absorber according to the present invention configured as described above, first, the first disc 13 is rotated in response to the driving of the motor 11, and the first eccentric is provided on one side of the front surface of the first disc 13. The cam disc 18 connected through the shaft 14 and the long hole 19 rotates, and the cam disc 18 is fixed to one side of the rotating shaft 16 and the second disc fixed to the other side of the rotating shaft 16 ( 20) will rotate.

In addition, the rotational motion of the motor 11 is converted into a linear reciprocating motion through the second eccentric shaft 21 and the connection link 26 and the slider 24 provided on one side of the front surface of the second disc 20.

That is, the second eccentric shaft 21 is connected to the second eccentric shaft 21 installed on one side of the front surface of the second disc 20 and one side is rotatably connected through the bearing 22, as shown in FIG. As the slider 24 is linearly reciprocated along the guide rod 25 while being moved up and down by the rotation of the 21, the shock absorber 31 mounted on the chamfer 30 is linearly reciprocated. The durability of the shock absorber is tested while compressing and tensioning the rod 32.

At this time, according to the characteristics of the present invention, the center of the rotation shaft 16 is eccentric with the center of the drive shaft 12 of the motor 11, the first disc 13 and the cam disc 18 is the first eccentric shaft 14 ) And the long hole 19 is connected, it is possible to vary the feed rate during compression and the feed rate during tension of the slider 24.

That is, as shown in FIG. 5, the first eccentric shaft 14 coupled to the long hole 19 of the cam disc 18 is located at a distance from the center of the cam disc 18 to rotate a predetermined angle θ1. When the cam disc 18 is rotated by L1, the cam disc 18 is rotated by L2 when the eccentric shaft 14 is located at a close distance from the center of the cam disc 18 and rotates by a predetermined angle θ2. .

Therefore, as the position of the first eccentric shaft 14 coupled to the long hole 19 of the cam disc 18 is closer to the center of the cam disc 18, the rotational speed of the cam disc 18 becomes faster. 18) When the rotational speed of 18) is used for compression, the 180-degree section is used for compression, and the rotational speed of the cam disc is used for tensioning. You can adjust the speed differently.

In this shock absorber durability tester, the feed rate at compression and the feed rate at tension are designed at a ratio of 5: 1, but the present invention is not limited thereto and can be adjusted to an appropriate ratio as necessary.

As described above, according to the durability test apparatus of the shock absorber of the present invention, the durability of the shock absorber can be tested with a simple structure.

Claims (1)

A motor, a first disc fixed to a drive shaft of the motor and having a first eccentric shaft formed on a front surface thereof, a rotation shaft rotatably supported on a support in a state with a predetermined central deviation from the drive shaft of the motor, A cam disc having a long hole fixed to one end and movably coupled to the first eccentric shaft of the first disc on one side thereof, a second disc fixed to the other end of the rotary shaft and having a second eccentric shaft formed on the front surface thereof, and a guide Slider is installed to be linearly movable along the rod, the linker is fixed to the rod of the shock absorber, the second eccentric shaft of the second disc and one end rotatably connected, the other end is rotatably connected to one side of the slider And a chamber, in which the shock absorber is mounted, the durability test apparatus of the shock absorber.