JPH062872Y2 - Semi-trailer combination vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a semi-trailer type combination vehicle.

(Prior Art) In a conventional semi-trailer type combination vehicle, a gooseneck of a trailer is loaded on a coconut frame of a tractor via a coupler.

(Problems to be Solved by the Invention) In the above conventional semi-trailer type coupled vehicle, when another vehicle collides with the rear portion of the trailer at high speed, the impact energy is transmitted from the trailer to the tractor via the coupler, If the kingpin of the car broke, the tip of the gooseneck of the trailer rushed into the tractor's cabin, which could be harmful to the occupants.

(Means for Solving Problems) The present invention has been proposed to address the above problems, and the gist of the present invention is that the gooseneck of the trailer is provided on the coconut frame of the tractor via the coupler. In a semi-trailer type combined vehicle to be loaded as a vehicle, a pyramid or a cone that can absorb energy by plastic deformation in one or both of the rear end of the above-mentioned shiyashi frame and the portion of the trailer facing the rear end with a space. The semi-trailer type coupling vehicle is characterized in that the energy absorbing device is installed.

(Operation) Since the present invention has the above configuration, when another vehicle collides at the rear of the trailer at high speed and the kingpin of the coupler is broken, the rear end of the cocoon frame of the tractor and the rear end The energy absorbing device disposed on either or both of the parts of the trailer facing each other with a space between them abuts the facing member on the opposite side and plastically deforms, and energy is consumed for this plastic deformation. Since the impact energy is absorbed, the impact energy transmitted from the trailer to the tractor is reduced.

(Embodiment) Hereinafter, the present invention will be specifically described with reference to the illustrated embodiment.

1 and 2, 1 is a tractor and 2 is a trailer. The gooseneck 2a of the trailer 2 is loaded on the coconut frame 1a of the tractor 1 via the coupler 3.

A pair of energy absorbing devices 4 are provided at a portion of the trailer 2 facing the rear end of the coconut frame 1a of the tractor 1 with a space therebetween.
The base end of is fixed and is projected substantially horizontally toward the front.

The energy absorbing device 4 is, as shown in FIG. 3 or 4,
A plurality of long holes 6 that are long in the direction substantially orthogonal to the axis of the base 5 made of a pyramidal or truncated cone-shaped hollow column are bored in parallel along the axis at predetermined intervals. Long hole 6
The edge 6a on the top end 5a side of the
The edge 6b on the 5b side is projected inward.

Then, when an impact such as a compression along the axial direction acts between the top end portion 5a and the base end portion 5b of the base body 5, the base body 5
Is sequentially buckled or partially broken from the top end 5a toward the base end 5b so that the projecting edges 6a and 6b of the elongated hole 6 overlap and abut each other.

As shown in FIG. 4, a circular hole 7 formed in the center of the substrates 7 and 8 fixed to the top end portion 5a and the base end portion 5b of the base body 5.
A cylindrical shock absorber 9 penetrating a and 8b may be fixed to the substrate 7. Further, the bumper 10 is directly attached to each top end portion 5a of the pair of energy absorbing devices 4, or, in the case shown in FIG. 4, an operating rod 9a of the shock absorber 9.
The bumper 10 is attached to the, but the bumper 10 can be omitted.

Further, the energy absorbing device 4 is arranged so as to project rearward at the rear end of the coconut frame 1a of the tractor 1 as shown in FIG. 5, or as shown in FIG. The rear end of the palm frame 1a and the trailer 2 can be arranged so that their top ends 5a collide with each other.

Then, when another vehicle collides with the rear portion of the trailer 2 due to restraint and the kingpin of the coupler 3 breaks, the energy absorbing device 4 collides with a member on the opposite hand side, and the energy absorbing device 4 The base body 5 is buckled and partially deformed to absorb impact energy.

Thus, the impact energy transmitted from the trailer 2 to the tractor 1 is significantly reduced, and the safety of the occupant of the tractor 1 is significantly improved.

(Effect of the Invention) In the present invention, one or both of the rear end of the palm frame and the portion of the trailer facing the rear end with a space therebetween are formed into a pyramid shape or a cone shape capable of absorbing energy by plastic deformation. Since an energy absorbing device is provided, when another vehicle collides with the rear part of the trailer due to restraint and the kingpin of the coupler breaks, the rear end of the cocoon frame of the tractor and this rear end are opposed to each other with a space. An energy absorbing device disposed on either or both of the trailer parts comes into contact with a member on the other hand side to be plastically deformed, and the energy is absorbed by this plastic deformation to absorb impact energy. The impact energy transmitted to the tractor is reduced, and occupant safety can be significantly improved.

Further, even when this connected vehicle collides head-on with another automobile or the like, the impact energy is absorbed by the energy absorbing device, so that the impact energy transmitted from the tractor to the trailer is reduced.

[Brief description of drawings]

1 to 3 show one embodiment of the present invention, FIG. 1 is a side view, FIG. 2 is a plan view, and FIG. 3 is a perspective view of an energy absorbing device. FIG. 4 is a sectional view showing another example of the energy absorbing device, FIG. 5 is a partial side view showing another embodiment of the present invention, and FIG. 6 is a partial side view showing yet another embodiment of the present invention. It is a side view. Tractor …… 1, Shiyashi frame …… 1a, Trailer ……
2, gooseneck …… 2a, coupler …… 3, energy absorption device …… 4

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Asahi Yamanaka 533-8, Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation

Claims (1)

[Scope of utility model registration request] 1. A semi-trailer type coupling vehicle in which a gooseneck of a trailer is loaded on a coconut frame of a tractor through a coupler, and a trailer portion facing the rear end of the coconut frame and the rear end thereof at a distance. A semi-trailer-type coupling vehicle having a pyramidal or conical energy absorbing device capable of absorbing energy by plastic deformation in one or both of the above.