Car shock absorber and car shock absorbing device using the same

Provided are a car shock absorber, which is installed at a connection road exit junction of a road, such as a tunnel of the road, an underground entrance, and a freeway exit ramp, or at positions where car accidents are concerned, such as piers, abutments, and fronts of tollgates, so as to prevent damage of a car and casualties that may occur when the car collides with the car shock absorber, and a car shock absorbing device using the same. Damage of a car and casualties that may occur when the car collides with the car shock absorber and the car shock absorbing device, can be prevented, and even when the car collides with the car shock absorber and the car shock absorbing device, driving of another car is not disturbed so that the occurrence of an accident can be prevented. A car shock absorbing device according to the related art has to be reinstalled when colliding with the car once; however, the car shock absorbing device according to the present invention can be repeatedly reused without reinstallation even after colliding with the car.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a car shock absorber and a car shock absorbing device using the same, and more particularly, to a car shock absorber, which is installed at a connection road exit junction of a road, such as a tunnel of the road, an underground entrance, and a freeway exit ramp, or at positions where car accidents are concerned, such as piers, abutments, and fronts of tollgates, so as to prevent damage of a car and casualties that may occur when the car collides with the car shock absorber, and a car shock absorbing device using the same.

2. Description of the Related Art

Car shock absorbing devices according to the related art are installed in the form of protective walls so as to prevent a car from colliding with facility at an entrance position of a fork in a road in which the road is divided by an entrance of the fork in the road, i.e., an underground road or a tunnel in a high-level road, and facilities installed on the road, such as piers under a bridge and tollgates in the expressway, due to driver's carelessness and to protect passengers' lives and the facilities.

Such car shock absorbing devices according to the related art may be configured of shock absorbing structures in which block-shaped concrete wall materials, sandbags and waste tires (tires) are stacked. However, in this case, these car shock absorbing devices require considerable installation lengths so as to stably and sufficiently absorb shock occurring when a car collides with the car shock absorbing device. Thus, it is difficult to install the car shock absorbing device within a limited space due to conditions of the road.

Also, when the car shock absorbing device is configured of waste tires (tires) or materials, such as urethane foam, the car shock absorbing device may be bounced off when the car collides with the car shock absorbing device, which disturbs driving of another car and causes an accident.

In particular, the car shock absorbing devices according to the related art require a long time, many efforts, and high cost for reinstallation when the car collides with the car shock absorbing device once.

SUMMARY OF THE INVENTION

The present invention provides a car shock absorber, which prevents damage of a car and casualties that may occur when the car collides with the car shock absorber, and a car shock absorbing device using the same.

According to an aspect of the present invention, there is provided a car shock absorber including: a case part having an elastic pad disposed at a side with which a car collides; a first shaft setting part configured in the case part and fixedly coupled to the side with which the car collides; a second shaft setting part fixed in the case part, disposed to face the first shaft setting part and fixedly coupled to the case part; a shaft part having one side set on and fixed to the first shaft setting part and the other side set on and fixed to the second shaft setting part; a first elastic member part inserted into the shaft part and configured at the first shaft setting part; a second elastic member part inserted into the shaft part and configured at the second shaft setting part; and a plurality of disk parts inserted into the shaft part and configured between the first elastic member part and the second elastic member part.

According to another aspect of the present invention, there is provided a car shock absorbing device including: a car shock absorber including a case part having an elastic pad disposed at a side with which a car collides, a first shaft setting part configured in the case part and fixedly coupled to the side with which the car collides, a second shaft setting part fixed in the case part, disposed to face the first shaft setting part and fixedly coupled to the case part, a shaft part having one side set on and fixed to the first shaft setting part and the other side set on and fixed to the second shaft setting part, a first elastic member part inserted into the shaft part and configured at the first shaft setting part, a second elastic member part inserted into the shaft part and configured at the second shaft setting part, and a plurality of disk parts inserted into the shaft part and configured between the first elastic member part and the second elastic member part; and a car shock guide including a rail part on which the car shock absorber is moved, and a fixture part configured at an opposite side at which the car shock absorber is disposed, to be supported by a support bracket.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, a configuration and an operation of a best embodiment of the present invention will be described with reference to the attached drawings.

FIG. 1is a cross-sectional view of a car shock absorber according to an embodiment of the present invention. A car shock absorber100includes a case part110, a first shaft setting part120, a third shaft setting part130, a shaft part140, a first elastic member part150, a second elastic member part160, and a plurality of disk parts170.

In more detail, the case part110includes an elastic pad111disposed on a side of the case part110with which a car collides.

The elastic pad111is disposed on the side of the case part110with which the car collides, so as to instantaneously alleviate shock when the car collides with the car shock absorber100.

Also, an inside of the case part110includes the first and second shaft setting parts120and130, the shaft part140, the first and second elastic member parts150and160, and the plurality of disk parts170. Hereinafter, a configuration and an operation of each of the above elements will be described in detail.

The first shaft setting part120is configured in the case part110and is fixedly coupled to the side with which the car collides.

The second shaft setting part130is fixed into the case part110. That is, the second shaft setting part130is disposed to face the first shaft setting part130and is fixedly coupled to the case part110.

That is, the first and second shaft setting parts120and130are disposed to face each other so that the shaft part140configured in the case part110may be set on the first and second shaft setting parts120and130.

In addition, the first and second shaft setting parts120and130are formed so that their upper portions may be opened in such a way that the first and second elastic member parts150and160and the plurality of disk parts170are assembled and then are easily fixedly set on the shaft part140, as illustrated inFIG. 2.

In particular, the first and second shaft setting parts120and130may be disposed in the center of one side of the case part110so that the car shock absorber100may absorb shock easily when a car collides with the car shock absorber100.

One side of the shaft part140is set on and fixed to the first shaft setting part120, and the other side of the shaft part140is set on and fixed to the second shaft setting part130.

Also, the first elastic member part150is disposed on the side of the shaft part140with which the car collides, and the second elastic member part160is disposed on an opposite side with which the car does not collide, so that the plurality of disk parts170are configured between the first and second elastic member parts150and160.

Meanwhile, the shaft part140may not be fixedly set on the first and second shaft setting parts120and130but may be fixed into the case part110by forced coupling.

The first elastic member part150is inserted into the shaft part140and is configured at the first shaft setting part120.

In this way, the first elastic member part150disposed on the first shaft setting part120is instantaneously compressed as the plurality of disk parts170make a forward movement, as indicated by an arrow B, when the car collides with the car shock absorber100, as indicated by an arrow A illustrated inFIG. 1.

Subsequently, the second elastic member part160is compressed by an elastic and repellent force of the first elastic member part150that returns to its original state and a force transferred to the plurality of disk parts170using the first elastic member part150.

Thus, when the car collides with the car shock absorber100, the first and second elastic member parts150and160are repeatedly compressed and tensioned. This compression and tension are applied to move the plurality of disk parts170right and left.

The above-described first and second elastic member parts150and160may be formed of any material having elasticity, but they may be springs, representatively.

The plurality of disk parts170are inserted into the shaft part140and are configured between the first elastic member part150and the second elastic member part160.

In this way, as the plurality of disk parts170disposed between the first and second elastic member parts150and160make a forward movement, as indicated by an arrow B, when the car collides with the car shock absorber100, as indicated by an arrow A illustrated inFIG. 1, the first elastic member part150is compressed, and the second elastic member part160is tensioned. Subsequently, as the plurality of disk parts170proceed toward the second shaft setting part130due to restoration characteristics of the first elastic member part150, the first elastic member part150is tensioned, and the second elastic member part160is compressed.

In this way, as the first and second elastic member parts150and160are repeatedly compressed and tensioned, the plurality of disk parts170are spaced apart from each other in a left/right direction and collide with each other so that the car shock absorber100may absorb shock.

Meanwhile, the plurality of disk parts170are separated from each other so as to proceed a pendulum motion according to collision energy transferred to the disk parts170, because weights of cars that collide with the car shock absorber100are different from each other.

That is, when the colliding car has a small weight, collision energy is transferred to only a part of the entire disk parts170, and when the colliding car has a large weight, collision energy is transferred to many parts of the entire disk parts170. Thus, the disk parts170are configured to make a pendulum motion regardless of the weight of the colliding car.

Furthermore, at least one third elastic member part180may be disposed between the plurality of disk parts170.

For example, as at least one third elastic member part180is disposed at edges of the disk parts170each having a rectangular shape, in the most ideal way, as illustrated in (a) ofFIG. 3, shock alleviation and absorption of the car may be more easily performed due to an elastic effect that occurs during collision between the disk parts170.

In this case, at least one third elastic member part180may be formed of any material having elasticity, but it may be springs, representatively.

Meanwhile, when at least one third elastic member part180is further disposed, the disk parts170absorb collision energy generated when the car collides with the car shock absorber100so that the disk parts170may proceed a pendulum motion without any limitation in the speed of the colliding car.

Also, the plurality of disk parts170may further include a shock absorbing member190that prevents brokenness of the disk parts170due to collision between the disk parts170in the most ideal way, as illustrated in (b) ofFIG. 3.

In this case, the shock absorbing member190may be formed of rubber or fiber and a synthetic resin including cotton wool, nonwoven fabric or Styrofoam. In addition, the shock absorbing member190may also be implemented with other materials that absorb shock.

Furthermore, the plurality of disk parts170may include both the third elastic member part180and the shock absorbing member180, as illustrated in (c) ofFIG. 3.

For example, as the plurality of disk parts170includes the third elastic member part180, the car shock absorber100may easily alleviate and absorb shock of the car. However, since brokenness of the disk parts170due to the shock of the car cannot be prevented, the plurality of disk parts170may further include the shock absorbing member190in a state in which the third elastic member part180is disposed in the plurality of disk parts170.

Since the above-described car shock absorber100is configured to have a larger weight than the weight of the car, when the car collides with the car shock absorber100, the colliding car just makes a fine movement, i.e., a forward movement of about 20 cm to about 30 cm, and all of energy caused by collision between the car shock absorber100and the car is absorbed.

That is, the car shock absorber100repeatedly performs the following operation, i.e., when the car collides with the car shock absorber100, the plurality of disk parts170make a forward movement toward the colliding car so that the first elastic member part150is compressed and the second elastic member part160is tensioned, and subsequently, as the plurality of disk parts170proceed toward an opposite side of the colliding car due to an elastic and repellent force of the first elastic member part150, the first elastic member part150is tensioned, and the second elastic member part160is compressed.

As a result, when the car collides with the car shock absorber100, the first and second elastic member parts150and160and the plurality of disk parts170make a pendulum motion so that the colliding car stops when colliding and the car shock absorber100absorbs shock due to the pendulum motion.

FIG. 4is a view showing a configuration of a car shock absorbing device according to an embodiment of the present invention. Referring toFIG. 4, a car shock absorbing device300includes a car shock absorber100and a car shock guide200.

The car shock absorber100may absorb shock when the car collides with the car shock absorber100as the car shock absorber100proceeds a pendulum motion when the car collides with the car shock absorber100, as described above in detail with reference toFIGS. 1 through 3. However, due to path separation of the car shock absorber100during car collision, another accident may occur. Thus, the car shock absorbing device300may further include the car shock guide200.

The car shock guide200includes a rail part210and a fixture part220.

In more detail, the car shock absorber100is moved on the rail part210.

That is, the rail part210is designed to be fixed to the ground to be spaced apart from a fixing plate211along a lengthwise direction of the fixing plate211, as illustrated inFIG. 4.

Thus, as the rail part210is configured so that, when the car collides with the car shock absorber100in a direction indicated by an arrow A, as illustrated inFIG. 5, the car shock absorber100may be conveyed along a railroad in a direction indicated by an arrow B, the car shock absorber100alleviates shock due to operations of the first and second shaft setting parts120and130, the shaft part140, the first and second elastic member parts150and160, and the plurality of disk parts170that are elements of the car shock absorber100when the car collides with the car shock absorber100, and the car shock absorber100is pushed in a shock direction, i.e., in the direction indicated by the arrow B.

Meanwhile, when castors112are disposed at a lower portion of the case part110of the car shock absorber100, the rail part210may further include separation prevention steel230for preventing the castors112from being separated from the case part110.

That is, as illustrated inFIG. 6, the castors112disposed at the lower portion of the case part110of the car shock absorber100move along a rail. If the car collides with the car shock absorber100, a considerably large shock force is generated when the car collides with the car shock absorber100. Thus, when the castors112are separated from the case part110, there is no shock absorption effect, and separation of the car shock absorber100causes an accident in another driving car. Thus, the rail part210further includes the separation prevention steel230for preventing separation of the castors112.

In particular, when the rail part210further includes a projection plate113disposed at the lower portion of the case part110of the car shock absorber100, the rail part210may further include a stopping part240including a stopping piece241on which the projection plate113is hung, and a fourth elastic member part242that is connected to the stopping piece241and provides elasticity.

For example, the projection plate113disposed at the lower portion of the case part110of the car shock absorber100prevents the car from colliding again with the car shock absorber100as a stopping phenomenon occurs, as indicated by portion C ofFIG. 7, when the stopping part240is disposed at an arbitrary point of the rail part210, as illustrated inFIG. 7, if the car collides with the car shock absorber100in the direction indicated by the arrow A and the car shock absorber100proceeds in the direction indicated by the arrow B, the projection plate113passes through the stopping piece241by overcoming an elastic and support force of the stopping piece241and collides with the fixture part220and then, the car shock absorber100proceeds toward the car due to reaction.

That is, in a state in which the projection plate113configured at the case part110of the car shock absorber100due to the fourth elastic member part242that elastically supports the stopping piece241passes the stopping piece241and then is conveyed, the car shock absorber100is continuously moved, and after the car collides with the fixture part220, even when the car shock absorber100returns to the car due to a repulsive force due to collision, the stopping piece241has a gradient and thus, the stopping part240may completely prevent the stopping piece241from being hung on the projection plate113, as indicated by portion C ofFIG. 7, and a front end of the car shock absorber100from colliding with the car.

Also, the car shock absorber100is again disposed at a front part of the rail, i.e., at a portion where the car collides with the car shock absorber100, and is reused without reinstallation after primary car collision so that secondary car collision may be immediately prevented.

Furthermore, the rail part210may further include a plurality of broken parts250that are disposed between the stopping part240and the fixture part220and offset shock of the car shock absorber100when the car collides with the car shock absorber100.

For example, the plurality of broken parts250are broken, as indicated by portion A (250) illustrated inFIG. 8, because the car shock absorber100proceeds along the rail210due to car collision and passes through the stopping part240, the car collides with the projection plate113disposed at the case part110of the car shock absorber100.

As a result, the plurality of broken parts250absorb shock and simultaneously remarkably reduce the speed of the car, and in particular, may reduce in lowering of the speed of a large car having a large weight that may occur when the large car collides with the car shock absorber100.

The fixture part220is configured to be supported on a support bracket221disposed on an opposite side at which the car shock absorber100is disposed.

In addition, the fixture part220collides with the car shock absorber100that is moved along the rail part210due to car collision and offsets shock of the car shock absorber100during car collision.

As a result, according to the present invention, during car collision, primary shock is absorbed on the elastic pad111, and the car shock absorber100absorbs secondary shock due to operations of the first and second elastic member parts150and160and the plurality of disk parts170, and third shock is absorbed by the broken parts250absorb third shock, and fourth shock is absorbed by the fixture part220.

Also, according to the present invention, the movement speed of the car shock absorber100may be remarkably reduced during a shock absorption operation. The car shock absorber100that alleviates shock of the car, is disposed adjacent to the fixture part240and then absorbs shock due to an internal configuration of the car shock absorber100due to reaction. Even though, after the car shock absorber100collides with the fixture part220, a restoration force to an opposite direction to the proceeding direction of the car shock absorber100, i.e., a direction in which the car is placed, is applied to the car shock absorber100, a considerable part of the restoration force is offset, and the restoration force is strong. Thus, even though the car shock absorber100is placed again toward the car, the car shock absorber100stops due to the stopping part240. Thus, a secondary collision phenomenon between the car shock absorber100and the car does not occur.

As described above, since a lower surface of the protruding car collides with the above-described car shock absorber100, even though the entire size of the car shock absorber100is configured to be not smaller than that of the car even though the car shock absorber100has a larger weight than that of the car, the car shock absorber100absorbs shock through the pendulum motion, and even though the length of the rail part210is not very large due to the stopping part240, the car shock absorber100prevents secondary collision with the colliding car.

For example, when the car shock absorber100has the height of 70 to 90 cm, the width of 40 to 60 cm and a larger weight than that of the car, the car shock absorber100may make the pendulum motion, and the length of the rail part240may be about at least 4 m.

As described above, in a car shock absorber and a car shock absorbing device using the same according to the one or more of embodiments of the present invention, damage of a car and casualties that may occur when the car collides with the car shock absorber and the car shock absorbing device, can be prevented, and even when the car collides with the car shock absorber and the car shock absorbing device, driving of another car is not disturbed so that the occurrence of an accident can be prevented. A car shock absorbing device according to the related art has to be reinstalled when colliding with the car once; however, the car shock absorbing device according to the present invention can be repeatedly reused without reinstallation even after colliding with the car.