JPS58110381A - Crash safety device for rear deck - Google Patents

Abstract

PURPOSE:To suppress the floating of a rear deck in case of the rear-end crash of a car by providing a deformation restraining mechanism using a bracket and a hook. CONSTITUTION:A rear deck 3 is fixed on a frame 2 through the front and rear bolt tightening sections 4 and a deformation restraining mechanism 5 located in almost middle location between them. Even when a rear-end car crash occurs, if a bracket 6 and a hook 8 are mounted, the through hole 7 of the bracket 6 is engaged with the engagement section 9 of the hook 8. As a result, the central section of the rear deck 3 can be suppressed from being floated, deformed, and moved forward.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rear deck collision safety device for a freight vehicle.

An object of the present invention is to secure safety by restraining the displacement of the rear deck during a rear-end collision and preventing secondary damage.

As shown in Fig. 1, in a conventional freight vehicle, the rear deck 3 is fixedly mounted on the fretboard 2 at the rear of the driver's cab 1, and the rear deck 3 and the frame 2 are fixed by bolts 4 at the front and rear positions. was. This is because the rear axle is located in the center of the rear deck 3, and it is difficult to tighten the bolts around the center due to the tires and the rear axle.

In this conventional case, when a rear-end collision occurs, the central part of the rear deck 3, which is not bolted, deforms and floats up.
There was a risk that the front of the rear deck 3 would move toward the driver's cabin and the door would not open.

Is the present invention a collision safety device that has been improved to avoid the above-mentioned conventional problems? The feature is that a rear deck deformation restraining mechanism against rear collision energy is provided to prevent deformation of the center portion of the rear deck, and the mechanism has a structure that allows easy assembly other than bolt tightening.

Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.

In Fig. 2, 1 is the driver's cab, 2 is the frame, and 3 is the rear deck.
The point that the rear deck 3 is identified is the same as in the conventional case.

The present invention is applied to a substantially intermediate portion of the bolt tightening portion 4, that is,
An image restraint mechanism 5 is installed between the rear deck 3 and the frame 2 at the center of the rear axle.

As shown in FIG. 3, this deformation restraint mechanism 5 is composed of a bracket 6 having an insertion hole 7 and a hook 8 having an engaging portion 9.

The bracket 6 and the hook 8 can be attached to either the rear deck 3 side or the frame 2 side. That is,
When the bracket 6 is attached to the rear deck 3 side, the hook 8 is attached to the frame 2 side, and when the bracket 6 is attached to the frame 2 (fil+), the hook 8 is attached to the rear deck 3 side.

In the example shown in FIG. 3, the bracket 6 is attached to the rear deck 3 side, and the hook 8 is attached to the frame 2 side, with the hook 8 passing through the insertion hole 7 and the retaining part 9 facing toward the rear of the vehicle. Deploy.

Since the present invention has the above-described structure, the rear deck 3 is fixed on the frame 2 via the front and rear bolt tightening parts 4 and the five deformation restraining mechanisms located approximately in the middle thereof.

If a rear-end collision occurs now, when the bracket 6 and the hook 8 are attached as shown in FIG.
This prevents the central part from lifting up, deforming, and moving forward.

As described above, according to the present invention, since a deformation restraining mechanism is provided using a bracket and a hook for approximately the middle portion of the rear deck fixed to the frame by the front and rear bolt tightening portions, the rear deck can be prevented from lifting up in the event of a rear-end collision. The advantage is that it suppresses forward movement and deformation, and prevents secondary damage that moves toward the driver's cab and makes it impossible to open the door, as in the conventional case.
It has the advantage that deformation restraint can be easily obtained at the rear axle center portion, which is difficult to tighten bolts, and the assembly work for fixing the rear deck onto the frame can be carried out in the same manner as in the past.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional example, FIG. 2 is a side view of a freight vehicle equipped with the device of the present invention, and FIG. 3 is a perspective view of essential parts of the device of the present invention. 1...@driver's cab, 2-e frame, 3... rear deck, 4... bolt tightening part, 5... deformation restraint mechanism, 6
... Bracket, 7... Insertion hole, 8... Hook,
9...Engagement part.

Claims (1)

[Claims] A bracket is fixedly installed on the flange 11 at the rear of the driver's cab by tightening bolts at two places, front and rear, and a bracket has an insertion hole approximately in the middle of the bolt tightening part, and is inserted into the insertion hole of this bracket to prevent a rear-end collision. A collision safety device for a rear deck, characterized in that a hook for restraining the displacement of the rear deck when the rear deck is moved is fixed to the lower surface of the rear deck and the frame.