KR19990027166U - Longitudinal frame structure of car - Google Patents

Abstract

The present invention relates to a longitudinal frame structure of a vehicle that can improve the impact absorption rate of the longitudinal frame, the one side has an open state, the other having a rectangular shape with several fastening holes 52 formed on each side of the other side The first frame 50 and the receiving groove 54 is formed so that the first frame 50 can be inserted in the inner side, and the first bracket 58 having a plurality of weld bolts 64 protruding therein is fixed. The second frame 56 has several coupling holes 66 formed on both sides thereof, and an accommodating groove 68 is formed to allow the second frame 56 to be inserted therein, and a weld bolt 78 therein. The first bracket (72) having a plurality of protrusions is fixed, and a third frame (70) in which several fastening holes (80) are formed at both sides, and the first frame (50) at the bottom of the second frame (56). ) And a locking portion 84 having an elastic force that fixes the second frame 56 to the third frame 70 at the same time. That made including projecting configured clip 82 is characterized.

Description

STRUCTURE OF LONGITUDINAL FRAME FOR A CAR

The present invention relates to a longitudinal frame structure of a vehicle, and more particularly to a longitudinal frame structure of a vehicle that can improve the impact absorption of the longitudinal frame.

In general, a car is divided into a body and a chassis, and the body is a part of the car, which stores the passenger compartment, the engine room and the engine where the engine is installed. It can be divided into a trunk compartment that can be transported. In addition, the chassis is a part of the car except for the part of the car, and various equipment necessary for the engine or the driving is installed in the frame to enable the driving of the vehicle. The frame should be light and strong enough to withstand the torsion or vibration caused by the impact from the road surface or the load of the cargo.

The front part of the car is equipped with a front frame, and the front frame consists of an upper frame and a lower frame. The center support panel is fixed vertically between the upper frame and the lower frame. One side and the other side of the front frame are coupled to a longitudinal frame (also called Longitudinal), and several brackets are fixed to the front frame and the longitudinal frame to mount an engine. The front frame and the longitudinal frame are manufactured in various shapes according to the specifications of the vehicle. Thus, a shock absorber is protected against a shock applied to the vehicle body in the longitudinal direction, thereby protecting the passenger.

1 is a perspective view showing a state in which the longitudinal frame is fixed to both sides of the front frame according to the prior art. Referring to Figure 1, the front frame 10 is composed of an upper frame 15 and the lower frame 20, the center support frame 25 vertically between the upper frame 15 and the lower frame 20 Is fixed. When the center support frame 25 is fixed to the upper frame 15 and the lower frame 20, fixing means such as welding and bolts are used. The longitudinal frame 30 is fixed to one side and the other side of the front frame 10, and several brackets are fixed to the front frame 10 and the longitudinal frame 30 to mount the engine.

However, the longitudinal frame configured as described above had a problem in that the impact absorption was not good because bending occurred in the longitudinal frame during impact.

That is, for example, when the longitudinal frame is impacted in the longitudinal direction, the longitudinal frame forms a self-deformation and absorbs the shock. The most ideal form of deformation is that the longitudinal frame is deformed into a corrugated tube and is longitudinally longitudinal. Compressed form. However, the bending caused by the longitudinal frame does not effectively absorb the impact energy, thereby lowering the shock absorption rate, thereby causing a problem of increasing the passenger injury.

Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a longitudinal frame structure of a vehicle which can improve the shock absorption rate of the longitudinal frame.

1 is a perspective view showing a state in which the longitudinal frame is fixed to both sides of the front frame according to the prior art

Figure 2 is an exploded perspective view showing the configuration of the longitudinal frame according to the present invention

Figure 3 is an enlarged cross-sectional view showing the main portion showing the configuration of the longitudinal frame according to the present invention

<Description of reference numerals for the main parts of the drawings>

50: first frame 52: fastening hole

54: receiving groove 56: the second frame

58: first bracket 60: spring

62: second bracket 64: weld bolt

66: coupling hole 68: receiving groove

70: third bracket 72: first bracket

74: spring 76: second bracket

78: weld bolt 80: fastener

82: clip 84: locking portion

90: longitudinal frame

The object of the present invention is to form a longitudinal frame that is fixed to one side and the other side of the front frame to absorb the shock transmitted in the longitudinal direction, one side is in an open state, the other side is formed with a number of fastening holes on each side The first frame having a shape of, and the receiving groove is formed so that the first frame can be inserted into the inside, the first bracket having a plurality of weld bolts protruding therein is fixed, and the plurality of coupling holes are formed on each side A second frame, a receiving groove is formed so that the second frame can be inserted into the inside, the first bracket having a plurality of weld bolts protruding in the inside is fixed, the third frame formed with several fastening holes on each side, bottom A clip having a locking portion having an elastic force for fixing the first frame to the second frame and having an elastic force for fixing the second frame to the third frame Can be achieved by a car longitudinal direction of the frame structure, it characterized in that made in included.

Hereinafter, a preferred embodiment of a longitudinal frame structure of a vehicle according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing the configuration of the longitudinal frame according to the present invention, Figure 3 is an enlarged cross-sectional view of the main portion showing the configuration of the longitudinal frame according to the present invention. 2 and 3, a first frame 50 having a rectangular shape is provided, and one side of the first frame 50 has an open state. Several fastening holes 52 are formed on each side of the other side of the first frame 50. A second frame 56 having a receiving groove 54 formed therein is provided to allow the first frame 50 to be inserted therein, and the first bracket 58 is fixed to the inside of the second frame 56. A second bracket 62 elastically supported to one side by a spring 60 is fixed to the first bracket 58, and a plurality of weld bolts 64 protrude from the first bracket 58. The first bracket 58 is fixed to the second frame 56 by fixing means such as welding or bolts. Several coupling holes 66 are formed on each side of both sides of the second frame 56, and coupling holes 66 formed on one side of the second frame 56 are formed on the other side of the first frame 50. It has the same line as the fastening hole 52. A third frame 70 having a receiving groove 68 is provided to allow the second frame 56 to be inserted therein, and the first bracket 72 is fixed to the inside of the third frame 70. A second bracket 76 elastically supported to one side by a spring 74 is fixed to the first bracket 72, and a plurality of weld bolts 78 protrude from the first bracket 72. The first bracket 72 is fixed to the third frame 70 by fixing means such as welding or bolts. Several fastening holes 80 are formed on both sides of the third frame 70, and the fastening holes 80 formed on one side surface of the third frame 70 are formed on the other side surfaces of the second frame 56. It has the same line as the engaging hole 66. A clip 82 for fixing the first frame 50 to the second frame 56 and for fixing the second frame 56 to the third frame 70 is provided, and at the bottom of the clip 82 An engaging portion 84 having an elastic force protrudes outward. The state in which the frame configured as described above is fixed by the clip and the effects thereof will be described.

The other side of the first frame 50 is positioned so that the fastening hole 52 formed on each side of the other side of the first frame 50 corresponds to the coupling hole 66 formed on each side of the second frame 56. Insert into (56). Since the receiving groove 54 is formed inside the second frame 56, the first frame 50 is easily inserted into the second frame 56. When the fastening hole 52 formed on the other side surface of the first frame 50 is located to correspond to the coupling hole 66 formed on one side surface of the second frame 56, the other side of the first frame 50 is the second side. The inner side of the frame 56 is in close contact with one side of the second bracket 62 elastically supported by one side by the spring (60). The other side of the first frame 50 is formed in a state in which the fastening hole 52 formed on each side of the first frame 50 corresponds to the coupling hole 66 formed on each side of the second frame 56. When the two frames 56 are in close contact with one side of the second bracket 62 elastically supported to one side by the spring 60, the first frame 50 is connected to the second frame 56 by using the clip 82. ). At this time, the engaging portion 84 elastically supported at the lower end of the clip 82 is made through the coupling hole 52 formed in the first frame 50 and the coupling hole 66 formed in the second frame 56. It is in close contact with the inner wall of the two frames 56.

When the first frame 50 is fixed to the second frame 56 by the clip 82, the coupling hole 66 formed on the other side surface of the second frame 56 may be formed on one side surface of the third frame 70. One side of the second frame 56 is inserted into the third frame 70 so as to correspond to the formed fastening hole 80. Since the receiving groove 68 is formed inside the third frame 70, the second frame 56 is easily inserted into the third frame 70. When the coupling hole 66 formed on the other side surface of the second frame 56 is positioned to correspond to the fastening hole 80 formed on one side surface of the third frame 70, the other side of the second frame 56 is the third side. The inner side of the frame 70 has a state in close contact with one side of the second bracket 76 elastically supported by one side by the spring (74). The other side of the second frame 56 is formed in a state in which the coupling hole 66 formed on each side of the second frame 56 corresponds to the fastening hole 80 formed on each side of the third frame 70. When the third frame 70 is in close contact with one side of the second bracket 76 elastically supported to one side by the spring 74, the second frame 56 is connected to the third frame 70 by using the clip 82. ). At this time, the engaging portion 84 elastically supported at the lower end of the clip 82 is made through the coupling hole 66 formed in the second frame 56 and the fastening hole 80 formed in the third frame 70. It is in close contact with the inner wall of the three frames (70).

When a shock is transmitted to the longitudinal frame 90 in the longitudinal direction, the first frame 50 is moved to the inside of the second frame 56 and the second frame 56 is moved to the inside of the third frame 70. Absorbs the shock transmitted as it moves. That is, when a shock is transmitted to the longitudinal frame 90 in the longitudinal direction, the first frame 50 is fixed to the second frame 56 and the second frame 56 is fixed to the third frame 70 at the same time. As the clip 82 is broken, the shock is primarily absorbed. When the first frame 50 is moved to the inside of the second frame 56 due to breakage of the clip 82, the clip 82 is moved when the second frame 56 is moved to the inside of the third frame 70. The remaining impact after absorbing at is absorbed. When the first frame 50 is moved to the inside of the second frame 56 by the impact, it is fixed to the inside of the spring 60 and the second frame 56 to elastically support the second bracket 62 to one side. The first bracket 58 restricts the movement of the first frame 50 to the inside of the second frame 56. The second frame 56 is also moved inside the third frame 70 in the same manner as above. That is, while fixing the first frame 50 to the second frame 56 and at the same time absorbs the shock transmitted by the clip 82 for fixing the second frame 56 to the third frame 70 and The springs 60, 74 and the first brackets 58, 72 which elastically support the second brackets 62, 76 to the outside absorb the residual shock transmitted through the clip 82. The impact absorption rate of the longitudinal frame 90 is improved.

As described above, the longitudinal frame structure of the vehicle according to the present invention primarily absorbs the shock transmitted from the clip fixing the first frame to the second frame and the second frame to the third frame. The residual shock transmitted through the clip is configured to absorb the shock transmitted in the longitudinal direction and the spring for elastically supporting the second bracket to the outside and has the effect of improving the impact absorption rate of the longitudinal frame. will be.

Claims (2)

In forming a longitudinal frame that is fixed to one side and the other side of the front frame to absorb the shock transmitted in the longitudinal direction, A first frame 50 having a state in which one side is opened, and having a rectangular shape in which several fastening holes 52 are formed on each side of the other side; An accommodation groove 54 is formed to allow the first frame 50 to be inserted therein, and a first bracket 58 having a plurality of weld bolts 64 protruding from the inside thereof is fixed, and a plurality of couplings are formed on both sides of the first frame 50. A second frame 56 having a ball 66 formed therein; An accommodation groove 68 is formed to allow the second frame 56 to be inserted therein, and a first bracket 72 having a plurality of weld bolts 78 protruding from the inside thereof is fixed, and a plurality of fastenings are provided on both sides. A third frame 70 in which the ball 80 is formed, A locking portion 84 having an elastic force for fixing the first frame 50 to the second frame 56 and fixing the second frame 56 to the third frame 70 at the bottom thereof protrudes outward. Longitudinal frame structure of a vehicle, characterized in that it comprises a clip (82). The method of claim 1, Longitudinal frame structure of a vehicle, characterized in that the first bracket (58), the second bracket (62), (76) is elastically supported to one side by a spring (60, 74).