JPH086623Y2 - Bumper structure of tilt cab vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a bumper structure for a tilt cab vehicle.

[Conventional technology]

BACKGROUND ART Conventionally, as is well known, a tilt cab vehicle has a cab that tilts forward of the vehicle around the axis of a tilt bracket. In order to avoid interference with the rear end of the upper surface, a gap B was provided between the front surface of the cab and the bumper.

Further, recently, as shown in FIGS. 4 and 5, a hard plate member 3 having a flat plate shape is attached to a gap between the rear end portion 1a of the upper surface of the bumper 1 and the lower portion of the radiator grill 2 to provide air flow during traveling. A bumper structure that rectifies and sends it to the radiator is used, or although not shown, the radiator grill can be divided into upper and lower parts and the lower part of the radiator grill is fixed to prevent interference between the bumper and radiator grill when tilting the cab. It was being done.

However, in the conventional example shown in FIG. 5, since the clearance B between the flat plate-shaped hard plate material 3 attached to the clearance and the lower portion of the radiator grill 2 is small, the bumper 1 and the lower portion of the radiator grill 2 interfere during tilting. There is a problem that the radiator grill 2 is damaged, or in the structure in which the radiator grill is divided, a gap is formed in the divided portion of the radiator grill, and there is a great limitation in modeling.

In view of such circumstances, Japanese Utility Model Laid-Open No. 62-138659 discloses a vehicle in which a bumper is attached to the tip of the frame and a gap is formed between the lower end of the front face of the cab and the rear end of the upper face of the bumper. And a site shield plate for closing the gap is movably provided on a support bracket portion supported by a bumper,
A bumper structure is disclosed in which a transmission mechanism for moving the site shield plate up and down is provided between the cab and the site shield plate in conjunction with a tilt operation.

[Problems to be solved by the device]

However, in the above-mentioned conventional example, since it is necessary to process the transmission mechanism and the link mechanism of the site shield plate that moves up and down in conjunction with the tilt movement of the cab, the structure becomes complicated and the cost becomes high, and the radiator grille is also increased. There was a problem that the air flow rectification effect was not sufficient when traveling downward.

The present invention has been devised in view of such an actual situation, and there is no interference between the lower portion of the radiator grill and the rear end portion of the upper surface of the bumper when the cab is tilted. It is an object of the present invention to provide a bumper structure for a tilt cab vehicle that can be supplied and has a simple structure.

[Means for solving the problem]

The present invention for achieving such an object is a bumper structure for a tilt cab vehicle in which a fixed gap is provided between a lower portion of a radiator grill and a rear end portion of an upper surface of a bumper, and a flexible straightening plate is provided in the gap. In this case, a guide member is provided below the radiator grill, one end of the current plate is loosely fitted in the groove formed in the guide member, and the other end of the current plate is fixed to the rear end of the upper surface of the bumper. It is a feature.

[Action]

With the above configuration, when the cab is tilted, one end of the straightening plate that is loosely fitted in the groove of the guide member can be bent and tilted downward in accordance with the tilt of the cab, and the lower part of the radiator grill and the upper part of the bumper rear surface can be tilted. There is no interference with the edges.

On the other hand, when the cab is returned to the original state (normal state), the straightening vane provided between the lower portion of the radiator grill and the rear end of the bumper upper surface becomes horizontal, and the airflow is straightened by the horizontal straightening vane. . Therefore, the rectified air flow can be sent to the radiator.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same elements as those of the conventional example are indicated by the same reference numerals.

1 to 3 show an embodiment of the present invention. In the drawings, reference numeral 4 is a straightening plate formed of a flexible material such as resin in a substantially rectangular shape. Is the long end 4a
Is located near the bottom of the radiator grill 2 and the other end 4b
Is attached to the rear end portion 1b of the upper surface of the bumper 1.

On both sides below the radiator grille 2, there are provided guide members 5 each having a groove 5a into which one end 4a of the flow straightening plate 4 is loosely fitted, and as shown in FIG. One end 4a of the straightening vane 4 is loosely fitted in the groove 5 to prevent the lower portion of the radiator grill 2 and the rear end portion 1b of the upper surface of the bumper 1 from interfering with each other when the cab 7 is tilted by the straightening vane 4. It is designed to close a fixed gap A.

Further, the guide member 5 projects from the front surface of the radiator grill 2 and is pushed by the guide member 5 as the cab 7 tilts as shown in FIG. One end 4a is bent downward so that it can be tilted.

Also, when the cab 7 is returned to the normal state, one end 4a of the straightening plate 4 is
Is guided by the guide member 5 and is loosely fitted in the groove 5a so as to be substantially horizontal, so that the gap between the bumper 1 and the lower portion of the radiator grill 2 is closed.

Since the present embodiment is constructed in this way, during normal running, the rectifying plate 4 has a gap A between the rear end portion 1b of the upper surface of the bumper 1 and the lower portion of the radiator grill 2 as shown in FIGS.
The air flow is rectified by blocking the air flow and the air is sent to the radiator. As shown in FIG. 3, when the cab 7 tilts, the guide member 5 pushes the one end 4a of the straightening vane 4 to bend it downward, so that the bumper 1 and the radiator grille 2 do not interfere with each other. The cab 7 will be tilted. Further, when the cab 7 returns, the rectifying plate 4 is guided by the guide member 5 and one end of the rectifying plate 4 is guided.
4a fits into the groove 5a and becomes substantially horizontal, and in that state, the gap between the bumper 1 and the lower portion of the radiator grill 2 is closed.

Therefore, according to this embodiment, the cab 7 can be tilted without damaging the radiator grille 2, and the structure is simpler than the conventional one.

Further, since the straightening plate 4 is substantially horizontal in the normal state, the airflow during traveling is straightened and sent to the radiator to improve the cooling effect of the radiator, and the appearance in front of the cab 7 is improved. .

[Effect of device]

As described above, the present invention provides a bumper structure for a tilt cab vehicle in which a fixed gap is provided between the lower portion of the radiator grille and the rear end portion of the upper surface of the bumper, and a flexible baffle plate is provided in the gap. A guide member is provided below the radiator grille, one end of the current plate is loosely fitted in the groove formed in the guide member, and the other end of the current plate is fixed to the rear end of the bumper upper surface. The damage to the radiator grille due to the interference between the lower part of the radiator grille and the rear end of the bumper upper surface is eliminated, and in normal times, the airflow can be rectified and the rectified airflow can be supplied to the radiator, which has the effect of simplifying the structure. .

In addition, since the current plate is located near the radiator grille, the airflow during traveling is rectified and sent to the radiator to improve the cooling effect of the radiator.
The appearance in front of the cab will also be improved.

[Brief description of drawings]

1 to 3 show an embodiment of a vehicle bumper structure according to the present invention, FIG. 1 is a perspective view of the bumper structure according to this embodiment, and FIG. 2 is a sectional view taken along line II-II of FIG. 3 and 4 are sectional views of the bumper structure when the cab is tilted, FIG. 4 is a perspective view of a conventional example, and FIG. 5 is V- of FIG.
It is a V sectional view. 1 ... Bumper 1b ... Top rear part 2 ... Radiator grill 4 ... Rectifier plate 4a, 4b ... End 5 ... Guide member 5a ... Groove

Claims (1)

[Scope of utility model registration request] 1. A bumper structure for a tilt cab vehicle in which a fixed gap is provided between a lower portion of a radiator grill and a rear end portion of an upper surface of a bumper, and a flexible straightening plate is provided in the gap. A tilt cab vehicle is characterized in that a guide member is provided below, one end of a current plate is loosely fitted in a groove formed in the guide member, and the other end of the current plate is fixed to a rear end portion of an upper surface of a bumper. Bumper structure.