KR19990018557A - Cross member of car floor panel for improved safety in side impact - Google Patents

Abstract

The present invention promotes passenger safety by effectively dispersing and absorbing laminar energy during side impact of the vehicle to minimize deformation of the center pillar, and safety in side impact of the vehicle so as to respond strongly to the side performance test regulations of each country. A cross member of an automobile floor panel having an improved profile, comprising: a side body of an automobile having a center pillar, a floor panel fixed at one side and a lower side of the side body, and a cross member fixed at an upper side of the floor panel, A tapered portion having a smaller cross-sectional area is formed in the cross member toward the side body to efficiently absorb and disperse the collision energy so as to reduce the center deformation of the center pillar that is deformed in the room direction during the side collision of the vehicle, and to prevent local deformation. To plan It is characterized.

Description

Cross member of car floor panel for improved safety in side impact

The present invention relates to a cross member of a vehicle floor panel that improves safety in a vehicle side collision, and more particularly, to minimize the deformation of the center pillar by effectively dispersing and absorbing laminar energy during side collision of the vehicle, thereby improving passenger safety. And cross-members of automotive floor panels that have improved safety in the event of a vehicle side collision so that they can respond strongly to the side performance test regulations of each country.

In general, the side body of the vehicle is a structural member forming the side portion of the vehicle serves to suppress the deformation of the vehicle during vehicle overturning and side collision and to ensure durability.

Although the upper section of each pillar tends to be thinner to make the watch wider, the bending and torsional stiffness of the car body should be taken into account.The lower part of the beltline has a larger section than the upper section and there are many areas where the stiffness changes rapidly. Since it supports, it manufactures in consideration of the fall of rigidity of a door.

In particular, the side body protects the body in the event of an accident and directly affects the safety of the passengers in the event of a side impact. Et al. Strongly regulated the strength and side impact performance tests by law.

Figure 1a is a side cross-sectional view of the use state showing the installation of the conventional cross member, Figure 1b is an enlarged perspective view of the conventional cross member.

Conventionally, the cross member 20 is provided on the floor panel 30 which is in contact with the side body 40 of the vehicle body, as shown in FIG. 1, so as to suppress deformation of the vehicle generated during side collision of the vehicle and secure durability. Combining to reinforce the rigidity of the body side body 40 and at the same time to protect the body of the passenger during the side impact of the vehicle.

However, when the vehicle collides with the center pillar 42 of the side body 40 of the vehicle, which is configured as described above, the collision energy is absorbed and dispersed to some extent by the plurality of reinforcement panels, but the collision The deformed portion between the reinforcement and the reinforcement of the center pillar 42 due to the force is deformed a lot, so that the center pillar 42 mounted between the front door of the car (not shown) and the rear door (not shown) is located inside the vehicle. It is deformed into a convex bow shape toward the occupant side.

The center pillar 42 is located between the vehicle front door and the rear door, that is, the side of the occupant on the front seat (not shown) of the vehicle, and the center pillar 42 deformed as described above when the vehicle collides with the vehicle. The price of the occupant's side, especially the rib (rib) in the front seat has a number of problems, such as threatening the life of the occupant and damage to the body.

The present invention has been made to solve the above problems, the present invention is to effectively disperse and absorb the laminar energy during the side impact of the vehicle to minimize the deformation of the center pillar to promote the safety of the occupants, and to enhance the The aim is to provide a cross member of the vehicle floor panel that has improved safety in the side impact of the vehicle so that it can respond to the side performance test regulations.

In order to achieve the above object, the present invention provides a side body of a vehicle having a center pillar, a floor panel fixed at one side and a lower part of the side body, and a cross member fixed at an upper side of the floor panel. It is characterized by constituting a tapered portion having a smaller cross-sectional area toward the side body side.

Figure 1a is a side cross-sectional view of the use state showing the installation of the conventional cross member,

1B is an enlarged perspective view of a conventional cross member;

Figure 2a is a side cross-sectional view of the use state showing the installation of the cross member of the present invention,

Figure 2b is an enlarged perspective view of the cross member of the present invention.

Explanation of symbols on the main parts of the drawings

10,20: Cross member 12: Taper part

14: shock absorber 30: floor panel

40: side body 42: center pillar

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;

Figure 2a is a side cross-sectional view of the use state showing the installation of the cross member of the present invention, Figure 2b is an enlarged perspective view of the cross member of the present invention, one end of the cross member, that is, the front end of the side body side compared to the other side Thus, a taper having a relatively small cross section is formed. The tapered cross member is fixed to the floor panel after forming a shock absorbing hole slightly apart from the side body when fixed to the floor panel of the vehicle body.

In the cross member of the present invention configured as described above, when the side impact of the vehicle impact force partially pushes the center pillar into the interior of the vehicle, the initial impact energy is absorbed from the shock absorbing hole in the lower part of the vehicle body, and the applied collision energy is applied back to the center pillar. At this time, the tapered portion, which is the tip of the cross member located at the lower portion of the center pillar, is rolled inside while absorbing the shock.

As the collision energy applied to the side is distributed evenly to the reinforcement panel and the cross member of the center pillar, the deformation is less on the passenger side, so the pressure on the upper body of the passenger is lessened.

As described above, according to the present invention, the collision energy can be efficiently absorbed and dispersed to reduce the center deformation of the center pillar that is deformed in the interior direction during the vehicle side collision, and the local deformation can be prevented, thereby improving passenger safety. Has the effect of.

Claims (2)

In a side body 40 of a vehicle having a center pillar 42, a floor panel 30 fixed at one side and a lower side of the side body 40, and a cross member fixed at an upper side of the floor panel 30. ; Cross member of the vehicle floor panel to improve the safety in the side impact of the vehicle, characterized in that the tapered portion 12 having a smaller cross-sectional area toward the side body (40) toward the cross member. The method of claim 1; Cross section of the vehicle floor panel, which improves safety during side impact of the vehicle, characterized in that the shock absorbing hole 14 is formed by separating the side body 40 side end surface of the cross member from the side body 40 by a predetermined distance. member.