JPH0638759Y2 - Side steps for trucks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a side step for a truck.

[Prior Art] FIGS. 3 and 4 show an example of a structure in the vicinity of a bumper mounting portion of a general truck, in which the length of the bumper 1 is extended to the front end of a chassis frame 2 of the truck via a mounting member 3. Two midway portions 4 in the direction are attached and supported, and side steps 6 are provided on the outer side surface 7 at the front portion of the chassis frame 2.

The bumper 1 is a rigid member formed by pressing a steel plate of several mm into a bar shape, and is intended to prevent damage to the vehicle during an object collision or a collision between vehicles.

The side step 6 has a substantially L-shaped support member 8, 8 having one end attached to the outer surface 7 in the front portion of the chassis frame 2 and extending downward, and the other end being bent outward in the horizontal direction at a predetermined position. And the step plate 9 fixed to the horizontal portions 8'and 8'of the supporting members 8 and 8, and the driver's seat of the truck is at a high position, so that the occupants can easily get on and off. It is provided in. Reference numeral 5 in the drawing denotes an end portion of the bumper 1.

[Problems to be Solved by the Invention] However, in the above-described conventional structure, since the bumper 1 is supported by the chassis frame 2 at the midway portion 4 in the longitudinal direction, the end portion 5 which is an outer side portion of the midway portion 4 is supported. There was a problem that the absorption of collision energy was small. That is, at the time of a passing collision or an oblique collision, the both end portions 5 of the bumper 1 have a structure that is easily bent, and thus there is a problem in occupant safety.

Further, even if the bumper 1 is bent rearward at the time of a collision as described above, the horizontal portions 8 ', 8'of the supporting members 8, 8 of the side step 6 and the step plate 9 and the bumper 1 are displaced in the vertical direction. Therefore, the side step 6 and the bumper 1 did not interfere at all, and the side step 6 did not serve at all for absorbing the collision energy.

The present invention has been made in view of the above-mentioned circumstances. The collision energy acting on the end of the bumper is also shared by the side steps, and the side steps are used as a collision energy absorption member to increase the absorption of the collision energy. Therefore, it is intended to improve the safety of the occupant in the case of a passing collision or an oblique collision.

[Means for Solving the Problems] According to the present invention, a support member extending horizontally outward is provided on the outer surface of a front portion of a chassis frame that supports a central portion of a bumper at its front end so as to project from the chassis frame. And a step member that extends from the support member to the back surface of the bumper end portion and that can interfere with rearward deformation of the bumper end portion, and further supports a step member having a footrest portion by the support member. It is related to a side step for a truck characterized by.

[Operation] Therefore, in the present invention, when collision energy acts on the bumper end portion during a passing collision, an oblique collision, or the like, the collision energy is shared by the side steps through the protrusion of the support member, As the load bearing capacity of the bumper end portion increases, and for a large collision energy exceeding the load bearing capacity, the side step also plastically deforms rearward following the plastic deformation of the bumper to largely absorb the collision energy.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which the same reference numerals as those in FIGS. 3 and 4 represent the same parts.

As shown in the figure, a front support member extending horizontally outward is provided on the outer surface 7 of the front portion of the chassis frame 2 of the truck.
A bumper 1 is attached to the front side support member 10 and is shown in a two-dot chain line in the figure toward the front in the longitudinal direction of the chassis frame 2.
A protruding portion 11 extending to the back surface is extended, and a tip portion 12 of the protruding portion 11 and the back surface of the bumper 1 are connected by a bolt or the like.

Further, a rear support member 13 extending outward in the horizontal direction is attached to the outer surface 7 at a position spaced apart from the front support member 10 by a required distance in the longitudinal direction of the chassis frame 2, and the rear support member 13 is attached.
A substantially U-shaped step member 15 having an upper opening and a footrest 14 at the bottom is attached to the front support member 10 and the front support member 10 to form a side step 16 of the present invention. Only step 16 is shown).

According to the side step 16, when the collision energy acts on the end 5 of the bumper 1 at the time of a passing collision or an oblique collision, the end 5 of the bumper 1 is moved by the protrusion 11 of the front support member 10. Since the back surface is pressed down, it can withstand some collision energy without bending. That is, the collision energy can be shared by the front side support member 10 through the projecting portion 11 to increase the load resistance of the end portion 5 of the bumper 1. Of course, a part of the collision energy is also shared by the rear support member 13 via the step material 15.

Further, for a large collision energy exceeding the load bearing capacity of the end portion 5 of the bumper 1, first the bumper 1 is plastically deformed rearward, and then the deformation causes the protrusion 11 to receive a large rearward load and the front side. The supporting member 10 is plastically deformed rearward, and then is deformed with the step member 15 and the rear side supporting member 13 to largely absorb the collision energy.

Therefore, according to the above, the collision energy acting on the end portion 5 of the bumper 1 is shared by the side step 16 via the projecting portion 11, and the side step 16 is used as a collision energy absorbing member, whereby the collision energy is absorbed. Of the vehicle can be increased, and therefore the safety of the occupant at the time of a passing collision and an oblique collision can be significantly improved.

FIG. 2 shows another embodiment of the present invention.
The side step 16 'is configured so that the step member 15 is supported only by the supporting member 10' having the step.

Also in this case, the collision energy acting on the end portion 5 of the bumper 1 can be shared by the side step 16 'as in the above-described embodiment.

The side step for a truck of the present invention is not limited to the above-described embodiment, and the back surface of the bumper step portion and the protruding portion may or may not be connected to each other, so that the bumper end portion is not deformed. It is needless to say that it is configured so as to be capable of interfering with each other, and in addition, various changes can be made without departing from the scope of the present invention.

[Advantage of Invention] As described above, according to the truck side step of the present invention, the collision energy acting on the bumper end is shared by the side step, and the side step is used as the collision energy absorbing member. It is possible to obtain the excellent effect that the absorbability of the collision energy can be increased, and thus the safety of the occupant at the time of a passing collision and an oblique collision can be significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of another embodiment of the present invention, FIG. 3 is a plan view showing a conventional example, and FIG. 4 is a perspective view showing a conventional example. Is. In the figure, 1 is a bumper, 2 is a chassis frame, 4 is a midway portion,
5 is an end portion, 7 is an outer surface, 10 is a front support member, 10 'is a support member, 11 is a protruding portion, 13 is a rear support member, 14 is a footrest portion, 15 is a step member, 16 and 16' side Indicates steps.

Claims (1)

[Scope of utility model registration request] 1. A support member extending horizontally outward is provided on the outer surface of a front portion of a chassis frame that supports a central portion of a bumper at its front end so as to project from the chassis frame. A side for a truck that extends to the back surface of the end of the bumper, extends a protrusion that can interfere with the rearward deformation of the bumper end, and further supports a step member having a footrest with the support member. Step.