JPH0698911B2 - Tilt cab car decorative plate mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a decorative plate used for improving the aerodynamic characteristics or the appearance of a cab of a tilt cab automobile in which a cab is mounted on a frame so that the cab can be tilted forward. The present invention relates to a mounting device.

<Prior Art> In recent years, for the purpose of improving the aerodynamic characteristics of tilt-cab automobiles or the appearance of the cab, for example
As seen in Japanese Patent Laid-Open No. 62-139788, a veneer often covers a gap formed between a rear end of an upper surface of a front bumper and a lower end of a grill fixed to a cab.

<Problems to be Solved by the Invention> However, conventionally, by fixing both vertical ends of a bellows-shaped decorative plate (cover) to the lower end of the grill and the upper end of the front bumper, the cab (when tilting the cab ( Since the gap is closed while preventing interference between the grille) and the front bumper, the cover may be deformed due to traveling vibration and the like, and the aerodynamic characteristics may be impaired. Therefore, there was a limit to improving the appearance of the cab.

In order to prevent the cover from being deformed due to running vibration, for example, as shown in Japanese Utility Model Publication No. 48-42404,
There is one in which a bell crank and a link mechanism are used to push and rotate the front panel forward when the cab is tilted to avoid interference with a grill or the like. However,
When bell cranks and links are provided in this way, it is difficult to make the decorative plate attachment device compact because it is necessary to secure working spaces for the bell cranks and links at the back of the front panel. There is a problem that noise is generated when the bell crank and the link vibrate due to such reasons.

The present invention has been made in view of such a situation,
It is an object of the present invention to provide a decorative board mounting device for a tilt-cab automobile that can improve both aerodynamic characteristics and the appearance of the cab.

<Means for Solving Problems> In order to achieve such an object, in the present invention, an upper end of a front bumper fixed to a front end of a frame of a tilt cab automobile and a lower end of a grill fixed to a front face of a cab are provided. A decorative plate is provided to cover the gap formed between them. Further, a support means for supporting the switchable movement between the normal position for covering the gap and the retracted position for lowering the decorative plate to the back of the front bumper to be located outside the movement path of the grill accompanying the rotation of the cab is provided. It is provided. A spring for elastically holding the decorative plate in the normal position is provided, and a member that moves integrally with the cab is connected to the decorative plate to move the decorative plate to the retracted position against the holding force of the spring when the cab is tilted. The feature is that a cable for forcibly moving is provided.

<Operation> Due to this configuration, when the cab is upright, that is, when the cab is held in the normal position, it is formed between the rear end of the upper surface of the front bumper and the lower end of the grill. Since the formed gap is covered with the decorative plate, the aerodynamic characteristics of the automobile and the appearance of the cab are ensured.

When the cab is tilted, the decorative plate, which was elastically held in the normal position until then, is pulled down to the back of the front bumper against the holding force of the spring, and is forcedly moved out of the movement path of the grill. Therefore, when the cab is tilted, the decorative plate is automatically forcibly switched to the retracted position, so that the grill and the decorative plate do not interfere with each other. When the cab is returned to the normal position, the pulling action of the cable is no longer performed, so that the decorative plate is returned to the normal position by the elastic force of the spring and covers the gap again.

Further, since the spring and the cable are used in the present invention to switch and move the decorative plate in this way, it is not necessary to secure an operation space such as a bell crank at the back of the decorative plate unlike the conventional case. The decorative plate mounting device can be made compact, the decorative plates can be smoothly switched and moved, and the noise caused by traveling vibration and the like is extremely small.

<Example> Hereinafter, one example of the present invention will be described in detail with reference to the drawings.

In the figure, a cab 3 is mounted on a front end portion of a frame 1 so as to be capable of tilting forward around a tilt hinge 2, and a front bumper 5 is fixed to a front end of the frame 1 via a stay 4.

Further, a gap 7 is formed between the rear end of the upper surface of the front bumper 5 and the lower end of the grill 6 fixed to the front surface of the cab 3 to prevent interference between the grill 6 and the front bumper 5. Further, the decorative plate 8 that covers the gap 7 thus formed is mounted on the frame so as to be able to move up and down via a bracket (not shown). The tip of the arm 9 that rotates about the tilt hinge 2 as the cab 3 tilts forward is connected to the decorative plate 8 via the cable 10, so that the spring 11 normally holds the makeup. The plate 8 is held at the position shown in FIG. 1 to cover the gap 7, but when the cab 3 is tilted, the decorative plate 8 is lowered to the back of the front bumper 5 against the spring 11 by the pulling action of the cable 10. Then, the grill 6 is retracted to the outside of the movement path.

In the decorative plate attaching device having such a configuration, when the cab 3 is erected as in normal traveling, the decorative plate 8 is held up by the spring 11 as shown in FIG. The gap 7 between the rear end of the upper surface of the front bumper 5 and the lower end of the grill 6 is covered with the decorative plate 8. Therefore, in this state, the appearance of the automobile is improved, and since the rectifying action is performed by the decorative plate 8, the aerodynamic characteristics are also improved.

On the other hand, when the cab 3 is tilted for inspection and maintenance of the engine, the arm 9 rotates in the counterclockwise direction around the cab hinge 2 as the cab 3 tilts forward. Further, since the decorative plate 8 is connected to the arm 9 via the cable 10, the cab 3 and the arm 9 are connected together.
When is rotated, the decorative plate 8 connected to the arm 9 via the cable 10 is lowered against the holding force of the spring 11 to the back of the front bumper 5 as shown in FIG. 6) Avoid interference with 3.

Further, in order to switch and move the decorative plate as described above, in the present invention, the arm 9 that moves integrally with the cab 3 and the decorative plate 8 are connected via the cable 10, so that the spring 11 always presses the spring to the normal position. Since the held decorative plate 8 is pulled by the cable 10 when the cab 2 is tilted to be forcibly moved to the retracted position on the back of the front bumper 5, an operating space such as a bell crank is provided on the back of the decorative plate 8. Therefore, the decorative plate 8 can be smoothly switched and moved, and the noise generated due to traveling vibration is extremely small.

<Effect of the Invention> As described above, according to the present invention, the decorative plate that covers the gap for interference prevention formed between the rear end of the upper surface of the front bumper and the lower end of the grill is provided with a spring when the cab is tilted. The tilt of the cab is prevented by lowering it to the back of the front bumper against the holding force of the grill to forcefully move it to a retracted position off the movement path of the grill to prevent interference with the grill. It is possible to improve the aerodynamic characteristics of the tilt-cab automobile and the appearance of the cab without impairing the characteristics. In addition, the decorative plate, which is normally elastically held in the spring by the spring, pulls the cable to the retracted position to prevent interference with the grill. Therefore, since it is not necessary to secure a working space for the cable on the back of the decorative plate, the decorative plate attaching device can be made compact, and the decorative plate can be smoothly switched and moved, and the traveling vibration can be reduced. It is possible to make the generation of noise associated with such things extremely small.

[Brief description of drawings]

FIG. 1 is a partially broken side view showing an embodiment of the present invention, and FIG. 2 is a partially broken side view showing a normal state of the cab when tilted. 1 ... Frame, 2 ... Tilt hinge 3 ... Cab, 4 ... Stay 5 ... Front bumper, 6 ... Grill 7 ... Gap, 8 ... Decorative plate 9 ... Arm, 10 ... Cable 11 ... spring

Claims (1)

[Claims] 1. A tilt cab automobile having a cab mounted on a frame so that the cab can be tilted forward, formed between a rear end of an upper surface of a front bumper fixed to a front end of the frame and a lower end of a grill fixed to a front surface of the cab. A decorative plate that covers the formed gap, a normal position that covers the gap, and a retracted position that lowers the decorative plate to the back of the front bumper and positions it outside the movement path of the grill accompanying the rotation of the cab. Support means for supporting the switching movement, a spring for elastically holding the decorative plate in a normal position, a member that moves integrally with the cab, and the decorative plate are connected to resist the holding force of the spring when the cab is tilted. A device for attaching a decorative plate to a tilt-cab automobile, which is provided with a cable for forcibly moving the decorative plate to the retracted position.