Abstract:
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.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    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. 
         [0003]    2. Description of the Related Art 
         [0004]    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&#39;s carelessness and to protect passengers&#39; lives and the facilities. 
         [0005]    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. 
         [0006]    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. 
         [0007]    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 
       [0008]    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. 
         [0009]    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. 
         [0010]    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. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0011]    The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: 
           [0012]      FIG. 1  is a cross-sectional view of a car shock absorber according to an embodiment of the present invention; 
           [0013]      FIG. 2  is an exploded perspective view of the car shock absorber illustrated in  FIG. 1 ; 
           [0014]      FIG. 3  is a view of a plurality of disk parts according to an embodiment of the present invention; 
           [0015]      FIG. 4  is a view showing a configuration of a car shock absorbing device according to an embodiment of the present invention; 
           [0016]      FIG. 5  is a view showing a case where a car collides with the car shock absorbing device illustrated in  FIG. 4 ; 
           [0017]      FIG. 6  is a cross-sectional view of a configuration of separation prevention steel according to an embodiment of the present invention; 
           [0018]      FIG. 7  is a cross-sectional view of a configuration of a stopping part according to an embodiment of the present invention; and 
           [0019]      FIG. 8  is a cross-sectional view of a configuration of broken parts according to an embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0020]    Hereinafter, a configuration and an operation of a best embodiment of the present invention will be described with reference to the attached drawings. 
         [0021]      FIG. 1  is a cross-sectional view of a car shock absorber according to an embodiment of the present invention. A car shock absorber  100  includes a case part  110 , a first shaft setting part  120 , a third shaft setting part  130 , a shaft part  140 , a first elastic member part  150 , a second elastic member part  160 , and a plurality of disk parts  170 . 
         [0022]    In more detail, the case part  110  includes an elastic pad  111  disposed on a side of the case part  110  with which a car collides. 
         [0023]    The elastic pad  111  is disposed on the side of the case part  110  with which the car collides, so as to instantaneously alleviate shock when the car collides with the car shock absorber  100 . 
         [0024]    Also, an inside of the case part  110  includes the first and second shaft setting parts  120  and  130 , the shaft part  140 , the first and second elastic member parts  150  and  160 , and the plurality of disk parts  170 . Hereinafter, a configuration and an operation of each of the above elements will be described in detail. 
         [0025]    The first shaft setting part  120  is configured in the case part  110  and is fixedly coupled to the side with which the car collides. 
         [0026]    The second shaft setting part  130  is fixed into the case part  110 . That is, the second shaft setting part  130  is disposed to face the first shaft setting part  130  and is fixedly coupled to the case part  110 . 
         [0027]    That is, the first and second shaft setting parts  120  and  130  are disposed to face each other so that the shaft part  140  configured in the case part  110  may be set on the first and second shaft setting parts  120  and  130 . 
         [0028]    In addition, the first and second shaft setting parts  120  and  130  are formed so that their upper portions may be opened in such a way that the first and second elastic member parts  150  and  160  and the plurality of disk parts  170  are assembled and then are easily fixedly set on the shaft part  140 , as illustrated in  FIG. 2 . 
         [0029]    In particular, the first and second shaft setting parts  120  and  130  may be disposed in the center of one side of the case part  110  so that the car shock absorber  100  may absorb shock easily when a car collides with the car shock absorber  100 . 
         [0030]    One side of the shaft part  140  is set on and fixed to the first shaft setting part  120 , and the other side of the shaft part  140  is set on and fixed to the second shaft setting part  130 . 
         [0031]    Also, the first elastic member part  150  is disposed on the side of the shaft part  140  with which the car collides, and the second elastic member part  160  is disposed on an opposite side with which the car does not collide, so that the plurality of disk parts  170  are configured between the first and second elastic member parts  150  and  160 . 
         [0032]    Meanwhile, the shaft part  140  may not be fixedly set on the first and second shaft setting parts  120  and  130  but may be fixed into the case part  110  by forced coupling. 
         [0033]    The first elastic member part  150  is inserted into the shaft part  140  and is configured at the first shaft setting part  120 . 
         [0034]    In this way, the first elastic member part  150  disposed on the first shaft setting part  120  is instantaneously compressed as the plurality of disk parts  170  make a forward movement, as indicated by an arrow B, when the car collides with the car shock absorber  100 , as indicated by an arrow A illustrated in  FIG. 1 . 
         [0035]    Subsequently, the second elastic member part  160  is compressed by an elastic and repellent force of the first elastic member part  150  that returns to its original state and a force transferred to the plurality of disk parts  170  using the first elastic member part  150 . 
         [0036]    Thus, when the car collides with the car shock absorber  100 , the first and second elastic member parts  150  and  160  are repeatedly compressed and tensioned. This compression and tension are applied to move the plurality of disk parts  170  right and left. 
         [0037]    The above-described first and second elastic member parts  150  and  160  may be formed of any material having elasticity, but they may be springs, representatively. 
         [0038]    The plurality of disk parts  170  are inserted into the shaft part  140  and are configured between the first elastic member part  150  and the second elastic member part  160 . 
         [0039]    In this way, as the plurality of disk parts  170  disposed between the first and second elastic member parts  150  and  160  make a forward movement, as indicated by an arrow B, when the car collides with the car shock absorber  100 , as indicated by an arrow A illustrated in  FIG. 1 , the first elastic member part  150  is compressed, and the second elastic member part  160  is tensioned. Subsequently, as the plurality of disk parts  170  proceed toward the second shaft setting part  130  due to restoration characteristics of the first elastic member part  150 , the first elastic member part  150  is tensioned, and the second elastic member part  160  is compressed. 
         [0040]    In this way, as the first and second elastic member parts  150  and  160  are repeatedly compressed and tensioned, the plurality of disk parts  170  are spaced apart from each other in a left/right direction and collide with each other so that the car shock absorber  100  may absorb shock. 
         [0041]    Meanwhile, the plurality of disk parts  170  are separated from each other so as to proceed a pendulum motion according to collision energy transferred to the disk parts  170 , because weights of cars that collide with the car shock absorber  100  are different from each other. 
         [0042]    That is, when the colliding car has a small weight, collision energy is transferred to only a part of the entire disk parts  170 , and when the colliding car has a large weight, collision energy is transferred to many parts of the entire disk parts  170 . Thus, the disk parts  170  are configured to make a pendulum motion regardless of the weight of the colliding car. 
         [0043]    Furthermore, at least one third elastic member part  180  may be disposed between the plurality of disk parts  170 . 
         [0044]    For example, as at least one third elastic member part  180  is disposed at edges of the disk parts  170  each having a rectangular shape, in the most ideal way, as illustrated in (a) of  FIG. 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 parts  170 . 
         [0045]    In this case, at least one third elastic member part  180  may be formed of any material having elasticity, but it may be springs, representatively. 
         [0046]    Meanwhile, when at least one third elastic member part  180  is further disposed, the disk parts  170  absorb collision energy generated when the car collides with the car shock absorber  100  so that the disk parts  170  may proceed a pendulum motion without any limitation in the speed of the colliding car. 
         [0047]    Also, the plurality of disk parts  170  may further include a shock absorbing member  190  that prevents brokenness of the disk parts  170  due to collision between the disk parts  170  in the most ideal way, as illustrated in (b) of  FIG. 3 . 
         [0048]    In this case, the shock absorbing member  190  may be formed of rubber or fiber and a synthetic resin including cotton wool, nonwoven fabric or Styrofoam. In addition, the shock absorbing member  190  may also be implemented with other materials that absorb shock. 
         [0049]    Furthermore, the plurality of disk parts  170  may include both the third elastic member part  180  and the shock absorbing member  180 , as illustrated in (c) of  FIG. 3 . 
         [0050]    For example, as the plurality of disk parts  170  includes the third elastic member part  180 , the car shock absorber  100  may easily alleviate and absorb shock of the car. However, since brokenness of the disk parts  170  due to the shock of the car cannot be prevented, the plurality of disk parts  170  may further include the shock absorbing member  190  in a state in which the third elastic member part  180  is disposed in the plurality of disk parts  170 . 
         [0051]    Since the above-described car shock absorber  100  is configured to have a larger weight than the weight of the car, when the car collides with the car shock absorber  100 , 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 absorber  100  and the car is absorbed. 
         [0052]    That is, the car shock absorber  100  repeatedly performs the following operation, i.e., when the car collides with the car shock absorber  100 , the plurality of disk parts  170  make a forward movement toward the colliding car so that the first elastic member part  150  is compressed and the second elastic member part  160  is tensioned, and subsequently, as the plurality of disk parts  170  proceed toward an opposite side of the colliding car due to an elastic and repellent force of the first elastic member part  150 , the first elastic member part  150  is tensioned, and the second elastic member part  160  is compressed. 
         [0053]    As a result, when the car collides with the car shock absorber  100 , the first and second elastic member parts  150  and  160  and the plurality of disk parts  170  make a pendulum motion so that the colliding car stops when colliding and the car shock absorber  100  absorbs shock due to the pendulum motion. 
         [0054]      FIG. 4  is a view showing a configuration of a car shock absorbing device according to an embodiment of the present invention. Referring to  FIG. 4 , a car shock absorbing device  300  includes a car shock absorber  100  and a car shock guide  200 . 
         [0055]    The car shock absorber  100  may absorb shock when the car collides with the car shock absorber  100  as the car shock absorber  100  proceeds a pendulum motion when the car collides with the car shock absorber  100 , as described above in detail with reference to  FIGS. 1 through 3 . However, due to path separation of the car shock absorber  100  during car collision, another accident may occur. Thus, the car shock absorbing device  300  may further include the car shock guide  200 . 
         [0056]    The car shock guide  200  includes a rail part  210  and a fixture part  220 . 
         [0057]    In more detail, the car shock absorber  100  is moved on the rail part  210 . 
         [0058]    That is, the rail part  210  is designed to be fixed to the ground to be spaced apart from a fixing plate  211  along a lengthwise direction of the fixing plate  211 , as illustrated in  FIG. 4 . 
         [0059]    Thus, as the rail part  210  is configured so that, when the car collides with the car shock absorber  100  in a direction indicated by an arrow A, as illustrated in  FIG. 5 , the car shock absorber  100  may be conveyed along a railroad in a direction indicated by an arrow B, the car shock absorber  100  alleviates shock due to operations of the first and second shaft setting parts  120  and  130 , the shaft part  140 , the first and second elastic member parts  150  and  160 , and the plurality of disk parts  170  that are elements of the car shock absorber  100  when the car collides with the car shock absorber  100 , and the car shock absorber  100  is pushed in a shock direction, i.e., in the direction indicated by the arrow B. 
         [0060]    Meanwhile, when castors  112  are disposed at a lower portion of the case part  110  of the car shock absorber  100 , the rail part  210  may further include separation prevention steel  230  for preventing the castors  112  from being separated from the case part  110 . 
         [0061]    That is, as illustrated in  FIG. 6 , the castors  112  disposed at the lower portion of the case part  110  of the car shock absorber  100  move along a rail. If the car collides with the car shock absorber  100 , a considerably large shock force is generated when the car collides with the car shock absorber  100 . Thus, when the castors  112  are separated from the case part  110 , there is no shock absorption effect, and separation of the car shock absorber  100  causes an accident in another driving car. Thus, the rail part  210  further includes the separation prevention steel  230  for preventing separation of the castors  112 . 
         [0062]    In particular, when the rail part  210  further includes a projection plate  113  disposed at the lower portion of the case part  110  of the car shock absorber  100 , the rail part  210  may further include a stopping part  240  including a stopping piece  241  on which the projection plate  113  is hung, and a fourth elastic member part  242  that is connected to the stopping piece  241  and provides elasticity. 
         [0063]    For example, the projection plate  113  disposed at the lower portion of the case part  110  of the car shock absorber  100  prevents the car from colliding again with the car shock absorber  100  as a stopping phenomenon occurs, as indicated by portion C of  FIG. 7 , when the stopping part  240  is disposed at an arbitrary point of the rail part  210 , as illustrated in  FIG. 7 , if the car collides with the car shock absorber  100  in the direction indicated by the arrow A and the car shock absorber  100  proceeds in the direction indicated by the arrow B, the projection plate  113  passes through the stopping piece  241  by overcoming an elastic and support force of the stopping piece  241  and collides with the fixture part  220  and then, the car shock absorber  100  proceeds toward the car due to reaction. 
         [0064]    That is, in a state in which the projection plate  113  configured at the case part  110  of the car shock absorber  100  due to the fourth elastic member part  242  that elastically supports the stopping piece  241  passes the stopping piece  241  and then is conveyed, the car shock absorber  100  is continuously moved, and after the car collides with the fixture part  220 , even when the car shock absorber  100  returns to the car due to a repulsive force due to collision, the stopping piece  241  has a gradient and thus, the stopping part  240  may completely prevent the stopping piece  241  from being hung on the projection plate  113 , as indicated by portion C of  FIG. 7 , and a front end of the car shock absorber  100  from colliding with the car. 
         [0065]    Also, the car shock absorber  100  is again disposed at a front part of the rail, i.e., at a portion where the car collides with the car shock absorber  100 , and is reused without reinstallation after primary car collision so that secondary car collision may be immediately prevented. 
         [0066]    Furthermore, the rail part  210  may further include a plurality of broken parts  250  that are disposed between the stopping part  240  and the fixture part  220  and offset shock of the car shock absorber  100  when the car collides with the car shock absorber  100 . 
         [0067]    For example, the plurality of broken parts  250  are broken, as indicated by portion A ( 250 ) illustrated in  FIG. 8 , because the car shock absorber  100  proceeds along the rail  210  due to car collision and passes through the stopping part  240 , the car collides with the projection plate  113  disposed at the case part  110  of the car shock absorber  100 . 
         [0068]    As a result, the plurality of broken parts  250  absorb 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 absorber  100 . 
         [0069]    The fixture part  220  is configured to be supported on a support bracket  221  disposed on an opposite side at which the car shock absorber  100  is disposed. 
         [0070]    In addition, the fixture part  220  collides with the car shock absorber  100  that is moved along the rail part  210  due to car collision and offsets shock of the car shock absorber  100  during car collision. 
         [0071]    As a result, according to the present invention, during car collision, primary shock is absorbed on the elastic pad  111 , and the car shock absorber  100  absorbs secondary shock due to operations of the first and second elastic member parts  150  and  160  and the plurality of disk parts  170 , and third shock is absorbed by the broken parts  250  absorb third shock, and fourth shock is absorbed by the fixture part  220 . 
         [0072]    Also, according to the present invention, the movement speed of the car shock absorber  100  may be remarkably reduced during a shock absorption operation. The car shock absorber  100  that alleviates shock of the car, is disposed adjacent to the fixture part  240  and then absorbs shock due to an internal configuration of the car shock absorber  100  due to reaction. Even though, after the car shock absorber  100  collides with the fixture part  220 , a restoration force to an opposite direction to the proceeding direction of the car shock absorber  100 , i.e., a direction in which the car is placed, is applied to the car shock absorber  100 , a considerable part of the restoration force is offset, and the restoration force is strong. Thus, even though the car shock absorber  100  is placed again toward the car, the car shock absorber  100  stops due to the stopping part  240 . Thus, a secondary collision phenomenon between the car shock absorber  100  and the car does not occur. 
         [0073]    As described above, since a lower surface of the protruding car collides with the above-described car shock absorber  100 , even though the entire size of the car shock absorber  100  is configured to be not smaller than that of the car even though the car shock absorber  100  has a larger weight than that of the car, the car shock absorber  100  absorbs shock through the pendulum motion, and even though the length of the rail part  210  is not very large due to the stopping part  240 , the car shock absorber  100  prevents secondary collision with the colliding car. 
         [0074]    For example, when the car shock absorber  100  has 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 absorber  100  may make the pendulum motion, and the length of the rail part  240  may be about at least 4 m. 
         [0075]    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. 
         [0076]    While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.