KR20020095278A - Side main frame for vehicles - Google Patents

Abstract

PURPOSE: A side main frame for a vehicle is provided to protect passengers and the vehicle safely by absorbing collision energy efficiently with modifying the structure of the side main frame at a head-on collision. CONSTITUTION: A side main frame(100) is composed of a front frame(110) having plural front frame assembling holes(111) and beads(150); a rear frame(120) having plural rear frame assembling holes(121) and parallel recessed beads in the rear part of the front frame; a reinforcing member(130) inserted to the rear frame with plural reinforcing member assembling holes(131); and a connecting member(140) combined with the front frame and the rear frame by front frame assembling holes, connecting member assembling holes(141), rear frame assembling holes, reinforcing member assembling holes and assembling units(160). Passengers are protected safely by absorbing impact efficiently at a head-on collision.

Description

Side main frame for vehicles}

The present invention relates to a side main frame of a vehicle, and more particularly, to improve the structure of a side main frame that distributes impact energy to a vehicle body in front of a vehicle collision, and to effectively absorb collision energy. Absorption relates to a device that can improve the safety of the vehicle and the occupant.

In general, the frame forms the skeleton of each device or body constituting the chassis, and is an important part supporting the load transmitted from the parts and the body and the reaction force generated in the front and rear axles. It has a strength and rigidity that can withstand bending, torsion, tension, vibration, etc. generated due to impact or load on the road, and it is manufactured at a light weight.

In particular, in the case of a passenger car or the like, the frame and the body are integrally formed, and this type not only reduces the weight of the vehicle but also assembles the frame and the body constituting the front or rear part of the car so that impact energy such as a collision is prevented. It is designed to absorb as much as possible to reduce the shock transmitted to the body and occupant.

In addition, a method of setting a bead at the front of the frame to induce an initial deformation so that the deformation of the frame in the front impact of the vehicle body can properly absorb the impact energy, and the use of the bead is a deformation of the front end of the frame This easily occurs, allowing a regular folding mode to occur, leading to effective shock energy absorption.

1 is a plan view showing a side main frame of a conventional vehicle.

As shown in FIG. 1, a side main frame of a conventional vehicle includes a side main frame 10 in which a plurality of bead 11 in parallel grooves are formed on a top and bottom in a rectangular column shape extending in a longitudinal direction.

In the conventional main vehicle side frame configured as described above, when the vehicle body collides forward while driving the vehicle, such a shock is directly transmitted to a bumper (not shown) of the vehicle body, and the bumper transmits the shock to a bumper frame (not shown) located behind the bumper. When delivered to the side main frame 10 through.

At this time, the side main frame 10 is deformed by the transmitted shock, and the side main frame 10 is formed by a plurality of groove-shaped beads 11 formed on the upper and lower sides of the side main frame 10. The shock energy is absorbed while deforming in the sequential folding mode.

In this way, the front main frame 10 is absorbed while the front main frame 10 is deformed while protecting the occupant.

However, the side mainframe of a conventional vehicle is technical in that the beads do not guide the deformation of the side mainframe in an effective direction, ie, in the axial direction, or absorb only a small amount of collision energy due to excessive bead formation. There was a problem.

The present invention is to solve the above problems, to provide a side main frame of the vehicle to effectively absorb the collision energy during the front collision of the vehicle to improve the safety of the vehicle and the occupant.

The present invention includes a plurality of front frame fastening holes in the shape of a rectangular column in the longitudinal direction formed on both sides of the rear side, the front frame having a plurality of parallel groove-shaped beads on the upper and lower surfaces; Positioned in the longitudinal direction at the rear side of the front frame is a rectangular column shape with a larger cross section than the front frame is formed with a plurality of rear frame fastening holes in the form of a circular hole on both sides, a plurality of parallel groove-shaped beads formed on the upper and lower surfaces A rear frame; A reinforcing member having a rectangular column shape having a plurality of circular reinforcing member fastening holes formed at both sides of the rear frame to be inserted into the rear frame; Positioned in parallel between the front frame and the rear frame has a plurality of connection member fastening holes in the form of a circular column on the front and rear sides in the form of a square bent in two stages, the front side is inserted into the rear side of the front frame The front frame fastening hole and the connecting member fastening hole are simultaneously penetrated and fastened by the fastening means, and the rear side is the rear frame in which the reinforcing member is inserted into the rear side and the rear frame fastening hole and the reinforcing member fastening hole and the connecting member fastening hole It is achieved by constructing the side main frame made of a connection member fastened by the fastening means at the same time.

1 is a view showing a side main frame of a conventional vehicle;

2 is a cross-sectional view showing a side main frame of a vehicle of the present invention;

3 is an exploded perspective view showing a side main frame of a vehicle of the present invention;

Figure 4 is a view of the connecting member of the side main frame of the vehicle of the present invention of Figure 3

Cross section of line A-A ',

Figure 5 is a deformation of the connection member of the side main frame of the vehicle of the present invention

Profile showing,

6 is a load-displacement graph of the side mainframe of the vehicle of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: side main frame 110: front frame

111: front frame fastening hole 120: rear frame

121: rear frame fastening hole 130: reinforcing member

131: fastening member fastening member 140: connecting member

141: fastening member 150: bead

160: fastening means

2 is a plan sectional view showing a side main frame of the vehicle of the present invention, Figure 3 is an exploded perspective view showing a side main frame of the vehicle of the present invention.

4 is a cross-sectional view taken along line AA ′ of FIG. 3 showing the connecting member of the side mainframe of the vehicle of the present invention, and FIG. 5 shows a deformation of the connecting member of the side mainframe of the vehicle of the present invention. It is a cross section.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 to 5, the side main frame of the vehicle of the present invention has a rectangular column shape extending in the longitudinal direction, and a plurality of circular front frame fastening holes 111 are formed on both rear sides of the vehicle, and parallel to the upper and lower surfaces thereof. A front frame 110 in which a plurality of groove-shaped beads 150 are formed; Positioned in the longitudinal direction at the rear side of the front frame 110 in the shape of a square pillar with a larger cross section than the front frame 110 is formed with a plurality of rear frame fastening holes 121 of the circular hole on both sides of the front, A rear frame 120 in which a plurality of parallel groove-shaped beads 150 are formed; Reinforcing members 130 having a rectangular pillar shape in which a plurality of reinforcing member fastening holes 131 are formed on both sides of the rear frame 120 to be inserted into the rear frame 120; Positioned in parallel between the front frame 110 and the rear frame 120 in the form of a square column bent in two stages in the form of a plurality of connection member fastening holes 141 each of the hole shape in the front and rear sides, the front side It is inserted into the rear side of the front frame 110 and penetrates the front frame fastening hole 111 and the connection member fastening hole 131 at the same time and is fastened by the fastening means 160, and the rear side is the reinforcing member 130. The inner rear frame 120 is inserted into the rear side through the rear frame fastening hole 121 and the reinforcing member fastening hole 131 and the connection member fastening hole 141 at the same time by the fastening means 160 It is characterized in that the technical consisting of the side main frame 100 made of a connection member 140 fastened.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 2 and 5.

The side main frame 100 of the vehicle of the present invention configured as shown in FIGS. 2 and 3 includes a front frame 110, a connecting member 140, a reinforcing member 130, and a rectangular pillar shape from the front of the vehicle. The rear frame 120 is sequentially fastened by the fastening means 160, and a plurality of beads 150 are formed on the front and rear surfaces of the front frame 110 and the rear frame 120 so as to form the side main frame 100. When forward shock is delivered to), the deformation of the side main frame 100 is induced in a sequential folding mode.

At this time, when the reinforcement member 130 is further fastened to the inside of the rear frame 120 to reinforce the rigidity of the rear frame 120, when a large shock is transmitted from the front side of the vehicle body to the rear frame 120. In addition, the rear frame 120 is to prevent damage to the vehicle body that may occur by deformation in a direction other than the axial direction.

In addition, the rigidity of the connection member 140 should be greater than the rigidity of the front frame 110 or rear frame 120, the rigidity of the front frame 110 is less than the rigidity of the rear frame 120, Each component is deformed to absorb the impact energy while sequentially transmitting the impact energy transmitted to the front side from the front side to the rear side.

As shown in Figure 4, the connecting member 140 is formed in the shape of the two-sided bent shape, because the shock is transmitted from the front because it is fastened to the front frame 110 located on the front side, Figure 5 As shown in FIG. 2, the connection member 140 is deformed while bending in two stages, so that the side main frame 100 is deformed in the axial direction to absorb impact energy.

6 is a load-displacement graph of the side mainframe of the vehicle of the present invention.

As shown in FIG. 6, the longitudinal displacement of the side main frame 100 and the side main frame of the conventional vehicle with respect to the longitudinal load applied to the side main frame 100 of the vehicle of the present invention through numerical analysis. When the longitudinal displacement of the side main frame 10 is illustrated with respect to the longitudinal load applied to (10), the area indicated by B in FIG. 6 is in a section where the front frame 110 and the connecting member 140 deform. The section after section B corresponds to the section where the rear frame 120 is deformed.

At this time, since the load at which the deformation of the side main frame 100 of the present invention starts is lower in the initial section of the section B than the conventional side main frame 10, the side main frame ( It can be seen that the 100 is smoothly absorbed, and when the average value of the section B is seen, since the load value of the side main frame 100 of the present invention is larger than that of the conventional side main frame 10, the rigidity is larger than that of the conventional one. It turns out that it represents.

In this way, the structure of the side main frame 100 of the vehicle is improved to smoothly absorb the impact energy while each component deforms the shock transmitted from the front of the vehicle body.

The present invention as described above is an invention that can effectively absorb the collision energy during the front collision of the vehicle to improve the safety of the vehicle and the occupant.

Claims (1)

A front frame fastening hole having a plurality of circular front frame fastening holes formed on both sides of the rear side in the shape of a rectangular column extending in the longitudinal direction, and having a plurality of parallel groove-shaped beads formed on the upper and lower surfaces thereof; Positioned in the longitudinal direction at the rear side of the front frame is a rectangular column shape with a larger cross section than the front frame is formed with a plurality of rear frame fastening holes in the form of a circular hole on both sides, a plurality of parallel groove-shaped beads formed on the upper and lower surfaces A rear frame; A reinforcing member having a rectangular column shape having a plurality of circular reinforcing member fastening holes formed at both sides of the rear frame to be inserted into the rear frame; Positioned in parallel between the front frame and the rear frame has a plurality of connection member fastening holes in the form of a circular column on the front and rear sides in the form of a square bent in two stages, the front side is inserted into the rear side of the front frame Through the front frame fastening hole and the connecting member fastening hole at the same time is fastened by the fastening means, the rear side is the rear frame fastening member and the reinforcing member fastening hole and the connecting member fastening hole is inserted into the rear side of the rear frame is located inside the reinforcing member Side main frame of the vehicle, characterized in that consisting of a side main frame made of a connecting member fastened by the fastening means at the same time.