JPS626887Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automobile door structure, and more particularly to an automobile door structure with improved crushing resistance when subjected to a side collision.

As a conventional automobile door structure, one shown in FIG. 1, for example, is known. In the figure, 1 is an automobile door, and this automobile door 1 has an outer panel 2 and an inner panel 3, which has lower rigidity than the outer panel 2 due to the formation of numerous holes for attaching window glass parts, etc. It consists of A stair portion 4 bent into a stair-like shape is formed at the lower end of the inner panel 3.
A reinforcing member 5 extending in the longitudinal direction of the vehicle body is provided on the inner surface of the stair portion 4. Further, a locking member 7 having a U-shaped cross section and opening toward the sill 6 is provided on the outer surface side of the staircase portion 4, and this locking member 7
Similarly to the reinforcing member 5, the reinforcing member 5 also extends in the longitudinal direction of the vehicle body. The reinforcing member 5, the stair portion 4, and the locking member 7 are fastened together with a plurality of bolts 8 and nuts 9. The outer panel 2 has a folded part 10 at its lower end, and this folded part 10 is bent so as to wrap around the tip 11 of the staircase part 4, and the tip is welded by weak spot welding that is not noticeable on the outside. 11. The sill 6 is formed with a recess 12 into which the lower end of the locking member 7 is inserted and locked when the automobile door 1 is closed. However, such an automobile door structure has a problem in that the crushing force of the automobile door 1 is low when the automobile receives a side collision. The reason for this is that when the automobile door 1 receives a force directed toward the interior of the vehicle due to a side collision, the outer panel 2 is deformed toward the interior of the vehicle as shown in FIG. At this time, a component force W in the direction of the arrow acts on the outer panel 2 due to the side collision, but the inner panel 3 has a locking member 7 connected to the step portion 4 locked in the recess 12 of the sill 6. Because of this, it cannot move, and a shearing force is generated between the folded part 10 and the tip part 11.
Due to this shearing force, the folded part 10 and the tip part 11
The weld is deformed as shown in Figure 2, and the weld is peeled off. This is because, as a result, only the inner panel 3, which has low rigidity, receives the force during a side collision.

This invention was made by focusing on the above-mentioned problem, and includes a projecting piece that projects toward the sill at the joint end of the outer panel and the inner panel, and is made up of the outer panel and the inner panel. The purpose of this invention is to solve the above-mentioned problems by integrally polymerizing and fixing the outer panel and the inner panel that form the projecting piece, and forming a locking part in which the projecting piece is locked in the sill facing the projecting piece. .

An embodiment of this invention will be described below based on the drawings.

In FIGS. 3 and 4, 21 is an automobile door, and this automobile door 21 has an outer panel 22.
and an inner panel 23 which is joined to the outer panel 22 and has a lower rigidity than the outer panel 22 due to the formation of a large number of holes.
An outer panel protruding piece 25 is formed at the lower end of the outer panel 22 and is bent toward the sill 24 and protruding toward the sill 24, and this protruding piece 25 extends in the longitudinal direction of the vehicle body. On the other hand, the lower end of the inner panel 23 is formed with a bent portion 26 that is recessed toward the outer panel 22 and extends in the longitudinal direction of the vehicle body. 28, and an inner panel side protrusion piece 29 that is continuous with the lower end of the vertical portion 28 and protrudes toward the sill 24 side, and has a U-shaped cross section as a whole. The front end surface of the outer panel side protrusion piece 25 and the front end side of the inner panel side protrusion piece 29 are located on the same vertical plane. A reinforcing member 30 is interposed between the protruding piece 25 and the inner panel side protruding piece 29,
These protruding pieces 25, 29 and reinforcing member 30
Since they are not directly exposed on the vehicle body surface, they are polymerized and fixed to each other by strong welding. A recess 32 as a locking portion is formed in a portion of the sill 24 facing the protruding pieces 25, 29, and the recess 32 is recessed toward the passenger compartment. The recess 32 has protruding pieces 25, 2 when the automobile door 21 is closed.
9 is inserted and locked.

Next, the operation of one embodiment of this invention will be explained. When the automobile door 21 receives a force directed toward the vehicle interior due to a side collision, the outer panel 22
is deformed, and at this time, a component force P in the direction shown by the arrow in FIG. 4 acts on the outer panel 22. At this time, since the protruding pieces 25 and 29 of the outer panel 22 are locked in the recess 32 of the sill 24, the outer panel 22
acts as a beam and transmits the impact force to the side sill while deforming until it contacts the inner panel 23.
Then, the outer panel 22 and the inner panel 23 are integrally superposed by the force directed toward the vehicle interior.
and are deformed together toward the passenger compartment. In this way, the protruding piece 25 of the outer panel 22 is attached to the inner panel 22.
Since the outer panel 22 with high rigidity is constantly deformed while resisting the force caused by the side collision, the inner panel 23 also reliably supports the force.
As a result, the crushing resistance of the automobile door 21 increases. In addition, at this time, since the reinforcing member 30 and the inner panel side protrusion piece 29 of the inner panel 23 are connected to the outer panel side protrusion piece 25 by strong welding, the rigidity of the two parts is improved, and as a result, the outer panel side protrusion piece 22 is The weld will not peel off due to deformation, and the protruding pieces 25 and 29 will be difficult to come out of the recess 32. As a result, the highly rigid outer panel 22 is constantly deformed by the force of the side collision.

FIG. 5 shows another embodiment of this invention. It should be noted that the same parts as those in one embodiment are denoted by the same reference numerals in the drawings, and explanations thereof will be omitted. In this embodiment, a plurality of pins 34 as locking parts are attached to the upper surface of the sill 24 at a predetermined distance apart in the longitudinal direction of the vehicle body, and each pin 34 has a flange 3 at its head.
5. On the other hand, the protruding piece 2 of the automobile door 21
5 and 29 are each formed with a notch 36 at a position corresponding to each pin 34, and when the automobile door 21 is closed, the shaft portion 37 of the pin 34 is formed in this notch 36.
is inserted, and the protruding piece 2 is inserted into the flange 35.
5 and 29 are locked. This embodiment also operates in the same manner as the previous embodiment.

As explained above, according to this invention, a protruding piece that protrudes toward the sill at the joint end of the outer panel and the inner panel and is composed of the outer panel and the inner panel, and the outer panel and the inner panel that form the protruding piece are formed. are integrally polymerized and fixed to form a locking portion in which the protruding piece is locked to the sill, so that the crushing resistance of the automobile door when the automobile receives a side collision can be improved.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional perspective view of a conventional automobile door structure, Fig. 2 is a cross-sectional perspective view of the automobile door structure shown in Fig. 1 subjected to a side collision, and Fig. 3 is an implementation of this invention. FIG. 4 is a cross-sectional view of an automobile door according to an embodiment of this invention when it is closed, and FIG. 5 is a cross-sectional perspective view showing a main part of another embodiment of this invention. be. 21...Automobile door, 22...Outer panel, 23...Inner panel, 24...Sill, 2
5, 29... Projection piece, 32, 34... Locking means.

Claims (1)

[Scope of utility model registration request] In an automobile door structure comprising an outer panel and an inner panel joined to the outer panel, a protruding piece made of the outer panel and the inner panel is formed at a joint end of the outer panel and the inner panel, protruding toward the sill. An automobile door characterized in that an outer panel and an inner panel forming the protruding piece are integrally polymerized and fixed, and a locking portion for locking the protruding piece is formed on a sill facing the protruding piece. structure.