JPH032421Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention mainly relates to an ingress/egress step installed in a cab-over type vehicle.

[Prior Art] In a cab-over type vehicle, the ingress/egress step is designed to prevent the ingress/egress step from interfering with the front wheels when the cab is tilted forward for engine maintenance. It is bendably supported between the bumper and the cab. but,
With this configuration, the ingress/egress step can only be installed on the final assembly line after the cab is mounted on the vehicle frame. Further, adjustment work is required to absorb mounting errors between the bumper and the cab relative to the vehicle frame, and installation of the ingress/egress step is time-consuming. Further, in the case of a suspension cab in which the cab is elastically supported by the vehicle frame, the ingress/egress step swings and bends during driving, which is undesirable.

The same thing can be said about the boarding/exiting step disclosed in Japanese Utility Model Publication No. 16324/1983.

[Problems to be Solved by the Invention] In view of the above-mentioned problems, an object of the present invention is to provide a step for getting on and off a vehicle that can be attached to the cab body in advance, has a simple structure, and is easy to assemble.

[Means for Solving the Problems] In order to achieve the above object, the configuration of the present invention is such that the long U-shaped front legs are fixed to the side walls of the cab, and the short rear legs are axially supported so as to be swingable back and forth. The rear end of the footboard is pivotally connected to the lower end of the rear leg via a link plate,
The front end of the tread plate is supported so as to be movable back and forth on the upper end of a pin protruding from the bottom wall of the front leg by a spring force, and the front end of the tread plate engages with the bottom wall of the front leg on the lower side of the front end of the tread plate to restrict the back and forth movement of the tread plate. It is provided with a pair of protrusions.

[Function] According to the present invention, the getting on/off step is attached to the cab body, so no special adjustment is required.
Easy to assemble. When the cab tilts forward, when the rear leg of the entry/exit step hits the front wheel, the link plate is pushed and the footplate moves forward along the bottom wall of the front leg.
Interference with the front wheels is avoided.

[Example of the invention] As shown in Fig. 1, the cab-over type vehicle has the following features:
A bumper 18 is installed at the front end of the vehicle frame 15 that supports the front wheels 16.
is attached, and the cab 14 is supported on the vehicle frame 15 so as to be tiltable forward about the tilt axis 13.

The ingress/egress step 10 according to the present invention is supported only by the cab body and has no relation to the vehicle frame 15. A long U-shaped front leg 7 extending downward and a short rear leg 1 are fixed to the side wall of the cab 14, a link plate 3 is connected to the rear leg 1, and a foot plate 5 is connected between the link plate 3 and the front leg 7. is supported.

As shown in FIG. 2, the front leg 7 is constructed by bending an elongated plate into a U-shape, and a guide rod 6 parallel to the bottom wall 7a is connected slightly above the bottom wall 7a. The link plate 3 is connected to the lower end of the wide rear leg 1 fixed to the cab 14 by a hinge or shaft 2 so as to be tiltable back and forth. A rear end of a footboard 5 is bendably connected to the lower end of the link board 3 by a hinge or shaft 4. The front end of the footboard 5 is connected to the bottom wall 7a of the front leg 7.
and the guide rod 6. The front edge of the footboard 5 is bent downward to form a projecting piece 12 that can collide with the front edge of the bottom wall 7a. Furthermore, a downwardly protruding projecting piece 11 is coupled to the intermediate portion of the footboard 5 by welding. However, it may be cut and raised from the footboard 5 during press molding.

As shown in FIGS. 3 and 4, a pair of left and right vertical pins 8 are inserted into and supported by the bottom wall 7a of the front leg 7, and a retaining ring 17 is locked to the lower end of the pin 8. A coil spring 9 is interposed between the head of the pin 8 and the bottom wall 7a. The footboard 5 is supported on a pair of pins 8 in a state where it is pushed up from the bottom wall 7a, and when the footboard 5 moves forward, the protruding piece 11 passes between the pair of left and right pins 8.

Next, the operation of the device of the present invention will be explained. As shown in FIG. 1, the rear end of the footboard 5 is connected to the link plate 3
The front end of the footboard 5 is connected to the bottom wall 7 of the front leg 7.
It is supported on pin 8 of a. When the footboard 5 moves backward, the projection 12 of the footboard 5 prevents the footboard 5 from coming off the front leg 7.

When you put your foot on the footboard 5 to get on and off, the pin 8 is pushed down against the force of the coil spring 9, and the protrusion 11 of the footplate 5 becomes lower than the bottom wall 7a of the front leg 7, causing the protrusion 12 and the protrusion 11 restricts the forward and backward movement of the footboard 5.

When the cab 14 is tilted forward about the tilt shaft 13, the link plate 3 hits the front wheel 16 and is rotated clockwise about the shaft 2 in the clockwise direction in FIG. 1, pushing the footboard 5 forward. In this way, cab 1
Interference with the front wheel 16 of the ingress/egress step 10 due to the forward tilt of the vehicle is avoided.

[Effects of the invention] As mentioned above, the present invention fixes the long U-shaped front legs to the side walls of the cab, supports the short rear legs on a shaft so that they can swing back and forth, and connects the rear end of the footboard to the side wall of the cab through a link plate. The front end of the footboard is movably supported back and forth on the upper end of a pin that is axially connected to the lower end of the rear leg and protrudes from the bottom wall of the front leg by a spring force, and the lower side of the front end of the footboard engages with the bottom wall of the front leg. Since a pair of front and rear protrusions are provided to restrict the forward and backward movement of the treadle, the forward tilting operation of the cab is not hindered by interference with the front wheel of the ingress/egress step.

Since the ingress/egress step is supported only on the side wall of the cab, it can be assembled during the cab assembly process, eliminating the hassle of adjusting the assembly position to the vehicle frame and cab as in the conventional case, and eliminating the need for the suspension step. It can also be applied to cabs without any problems.

A pair of front and rear protrusions are provided on the lower side of the front end of the tread to engage the bottom wall of the front leg and restrict the back and forth movement of the tread, so normally the tread is allowed to move back and forth, but
When you place your foot on the footboard when getting on or off, the pin is pushed down and engages the bottom wall of the front leg between the pair of protrusions, preventing the footboard from moving back and forth, so it is safe.

[Brief explanation of the drawing]

Fig. 1 is a side view of a cabover type vehicle equipped with a step for getting in and out of a vehicle according to the present invention, Fig. 2 is a perspective view of the step for getting in and out of a vehicle according to the present invention, Fig. 3 is a side sectional view of the same, and Fig. 4 is a front sectional view of the same. 2, 4: Axis, 3: Link board, 5: Step board, 7:
Front leg, 10: Getting on/off step, 13: Tilt axis, 1
4: Cab, 15: Vehicle frame, 16: Front wheel.

Claims (1)

[Scope of utility model registration request] The long U-shaped front legs are fixed to the side walls of the cab, and the short hind legs are axially supported so that they can swing back and forth.The rear end of the footboard is axially connected to the lower end of the hind legs via a link plate, and the bottom wall of the front legs The front end of the tread plate is supported so as to be movable back and forth on the upper end of the pin protruded by a spring force, and a pair of front and rear protrusions are provided on the lower side of the front end of the tread plate to engage with the bottom wall of the front leg and restrict the back and forth movement of the tread plate. A step for getting on and off a vehicle, characterized by having a step.