JP3226246U - Truck bed stopper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stopper device for a truck bed with improved safety by automating an operation of raising a stopper after loading a load. SOLUTION: A stopper 14 provided so as to be able to swing up and down around a horizontal shaft 13 inside a box 12 embedded in a rear end portion of a loading platform of a truck equipped with rollers, and the stopper 14 is directed upward. An elastic spring 15 and a slide pin 20 that is retractable inside the stopper 14 for holding the stopper 14 at a lower position against the spring 15 are housed. Inside the rear door 30 of the truck, a push pin 31 that swings the stopper 14 upward by pushing the slide pin 20 when the door is closed is attached. When the rear door 30 is closed, the stopper 14 automatically moves. The structure is to rise. [Selection diagram] Fig. 5

Description

  TECHNICAL FIELD The present invention relates to a stopper device installed on a bed of a truck equipped with rollers.

  In many cases, the bed of a large truck that carries loads loaded on a pallet is provided with rollers extending in the front-rear direction so that loading and unloading can be performed easily. An example thereof is described in Patent Document 1.

  This roller can be moved up and down with respect to the floor surface of the truck bed, keep the roller lower than the floor surface while traveling, and raise the roller above the floor surface during loading and unloading to load the luggage. Loading or unloading is done from the rear of the loading platform with a forklift.

  However, if the place where the truck stopped for loading and unloading was tilted backward, the luggage could slip and fall behind the luggage carrier when the rear door was opened. For this reason, a stopper that can move up and down is installed at the rear end of the luggage carrier, and the stopper is lifted when loading is completed so that the luggage does not fall behind the luggage carrier even if the rear door is opened after the vehicle is stopped. However, the driver sometimes forgets to operate this stopper after loading and starts the car with the stopper lowered, leaving a problem in ensuring safety.

Japanese Utility Model Publication No. 6-8348

  SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned conventional problems, and to provide a stopper device for a truck bed, which automates an operation of raising a stopper after loading a load and improves safety.

  The stopper device for a truck bed according to the present invention made to solve the above-mentioned problems swings up and down about a horizontal axis inside a box embedded in the rear end of the truck bed equipped with rollers. A stopper provided so that it can be accommodated, a spring that springs this stopper upward, and a slide pin that can be retracted inside the stopper to hold this stopper in a lower position against the spring, The inside of the rear door of the truck is characterized in that a push pin for swinging the stopper upward by pushing the slide pin when the door is closed is attached.

  It is preferable that an intermediate pin that transmits the movement of the push pin to the slide pin is provided between the push pin and the slide pin. Further, as described in claim 3, it is preferable that the roller can be raised and lowered with respect to the floor surface of the truck bed, and that the upper surface of the stopper held at the lower position is flush with the floor surface of the truck bed.

  According to the present invention, the stopper can be automatically raised when the rear door of the truck is closed. Since the driver always closes the rear door at the end of loading, there is no need to leave the vehicle with the stopper lowered as in the past, and even if the rear door is opened after the vehicle is stopped, the stopper is still in the raised position, so the luggage slips and the loading platform You can eliminate the risk of falling behind.

  Moreover, since the device of the present invention operates by a spring, it does not require a power source and can be manufactured at low cost. When loading and unloading, the stopper may be pushed down manually.

It is a perspective view in the state where the rear door of a truck was opened. It is a perspective view in the state where the rear door of a truck was opened. It is sectional drawing of a stopper device. It is an appearance perspective view of the whole stopper device. FIG. 3 is a view for explaining the operation of the device of the present invention.

Hereinafter, preferred embodiments of the present invention will be described.
1 and 2 are perspective views showing a state in which a rear door of the truck is opened, 10 is a truck bed, and 11 is a roller provided on the truck bed 10. In this embodiment, the rollers 11 are provided in two rows in the front-rear direction of the truck carrier 10. The rollers 11 are elevated from the truck carrier floor surface as shown in FIG. 1 and the truck carrier floor as shown in FIG. It is possible to take a position lower than the plane.

  At the rear end of the truck bed 10, the stopper device of the present invention is provided. FIG. 3 is a sectional view of the stopper device. In the figure, reference numeral 12 is a box embedded in the truck bed 10, and its upper surface is substantially level with the floor surface of the bed. Inside the box 12, a horizontal shaft 13 and a stopper 14 capable of swinging up and down about the horizontal shaft 13 are housed. As shown in FIG. 3, the stopper 14 has a bottomless box shape formed by bending a steel plate. In the state of FIG. 3, the upper surface of the stopper 14 is also substantially level with the bed floor surface.

  A spring 15 is provided around the horizontal shaft 13. In this embodiment, the spring 15 is a spiral spring, the lower end of which is in contact with the bottom surface of the box 12 and the upper end of which is in contact with the back surface of the stopper 14. Therefore, upward spring force is always acting on the stopper 14. In order to hold the stopper 14 in the lower position against the spring force, a slide pin 20 described below is provided.

  A cylinder 19 is welded between a side surface 17 of a wall body 16 formed inside the stopper 14 and a rear wall surface 18 of the stopper 14. A slide pin 20 is housed inside the cylinder 19 so as to be slidable in the front-rear direction. A coil spring 21 is housed inside the cylinder 19 so that the slide pin 20 is always urged toward the rear of the bed. Since the elongated hole 22 is formed on the lower surface of the cylinder 19 and the projection 23 attached to the slide pin 20 is fitted in the elongated hole 22, the movement stroke of the slide pin 20 is restricted by the elongated hole 22. ing.

  As shown in FIG. 3, the rear end of the slide pin 20 has a curved surface and penetrates a hole formed in the rear wall surface 18 of the stopper 14. A hole 24 is also formed at the same position on the rear wall surface of the box 12. Therefore, when the end of the slide pin 20 penetrates the hole 24 of the box 12 as shown in FIG. 3, the stopper 14 cannot swing upward and resists the spring force as shown in FIG. The upper surface of the stopper 14 is at substantially the same height as the floor surface of the cargo bed.

  As shown in FIG. 3, a second cylinder 25 is fixed to the rear of the box 12, and an intermediate pin 26 is housed inside the second cylinder 25 so as to be slidable in the front-rear direction. The cylinder 25 is provided at the same position as the hole 24 on the rear wall surface of the box 12. In the state of FIG. 3, the intermediate pin 26 is pushed rearward by the end of the slide pin 20, and its rear end faces the hole 27 formed at the rear end of the truck carrier 10. In addition, in order to prevent the intermediate pin 26 from falling out of the hole 27, an appropriate retaining means is provided. Figure 4 shows the external appearance of this part.

  As shown in FIGS. 1 and 2, a push pin 31 that is inserted into the hole 27 when the door is closed is fixed to the inside of the rear door 30 of the truck. If the push pin 31 collides with a load and is deformed, the push pin 31 cannot be correctly inserted into the hole 27 when the rear door 30 is closed. Therefore, in this embodiment, the cover 32 is attached to the base of the push pin 31. Has been.

  When the rear door 30 is closed and the push pin 31 is inserted into the hole 27, the intermediate pin 26 is pushed forward as shown in FIG. 5, and the intermediate pin 26 pushes the slide pin 20 forward. When the slide pin 20 moves forward while compressing the coil spring 21 and comes out of the hole 24 in the rear wall surface of the box 12, the stopper 14 is swung upward by the force of the spring 15. At this time, since the tip of the slide pin 20 is caught on the upper surface of the box 12, the stopper 14 maintains the raised state shown in FIG.

Next, the usage of the stopper device of the present invention will be described.
When loading luggage, the stopper 14 is in a lowered state (state in FIG. 3) as shown in FIG. 1, and the roller 11 is in a position raised above the floor surface of the truck bed. In this state, the load placed on the pallet is loaded on the loading platform 10.

  When the loading is completed, the driver lowers the roller 11 to put the pallet on the floor surface of the bed, and finally closes the rear door 30 without fail. At this time, as shown in FIG. 5, the push pin 31 inside the rear door 30 is inserted into the hole 27 formed at the rear end of the luggage carrier 10, and the stopper 14 is raised as shown in FIG. The raised stopper 14 maintains its position, and the truck runs in this state.

  When the driver arrives at the destination, the driver opens the rear door 30, at which time the stopper 14 is in the raised position of FIG. Therefore, even if the place where the truck is stopped is inclined rearward and downward, the load does not slip and drop behind the luggage carrier because it hits the raised stopper 14. The driver pushes in the slide pin 20 with his fingertip and pushes down the stopper 14 to bring it to the state shown in FIG. 1, and then unloads the load.

  When there are two rear doors 30, the stopper device of the present invention is preferably provided at the left and right positions of the rear portion of the loading platform 10. Further, in this embodiment, the intermediate pin 26 is provided between the push pin 31 and the slide pin 20, but the intermediate pin 26 is not essential, and the intermediate pin 26 may be omitted depending on the size of the luggage carrier 10. Is.

  As described above, since the stopper device of the present invention is automatically raised by the operation of closing the rear door 30, it is possible to surely prevent the risk of dropping the luggage due to forgetting the stopper operation as in the conventional case. Moreover, there is an advantage that a power source is unnecessary and the device can be manufactured at low cost.

10 Truck carrier 11 Roller 12 Box 13 Horizontal shaft 14 Stopper 15 Spring 16 Wall surface body 17 Side wall 18 Rear wall surface 19 Cylinder 20 Slide pin 21 Coil spring 22 Long hole 23 Protrusion 24 Box hole 25 Second cylinder 26 Intermediate pin 27 Load carrier Hole 30 formed at the rear end of the rear door 31 Rear door 31 Push pin

Claims (3)

Inside the box embedded at the rear end of the truck bed with rollers,
A stopper provided so that it can swing up and down about a horizontal axis,
A spring that springs this stopper upward,
In order to hold this stopper at the lower position against the spring, a slide pin slidably provided inside the stopper is stored.
A stopper device for a truck bed, wherein a push pin for swinging the stopper upward by pushing the slide pin when the door is closed is attached to the inside of the rear door of the truck.   The stopper device for the truck bed according to claim 1, wherein an intermediate pin for transmitting the movement of the push pin to the slide pin is provided between the push pin and the slide pin.   The roller can be raised and lowered with respect to the floor surface of the truck bed, and the upper surface of the stopper held at the lower position is flush with the floor surface of the truck bed. Stopper device for loading platform.

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