JPH0780470B2 - Truck packing box door moving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a device for moving a door at the rear of a truck luggage box from the center of a luggage platform to the left and right.

[Conventional technology]

Conventionally, as a means for moving the door at the rear of the truck box from the center of the bed to the left and right, a screw shaft is installed in the left and right direction at the back of the bed below the door, and a bracket attached to the lower part of the door is screwed to the screw shaft. However, the door was moved by rotating the screw shaft with a motor. (JP-A-62-83230) [Problems to be Solved by the Invention] In order to facilitate loading and unloading on a truck bed, it is important to open the truck bed.

Therefore, in order to open the cargo bed greatly, the applicant of the present invention has disclosed a device for integrally moving the roof tilting members installed on the rear section door and the gate of the cargo bed to the side of the cargo bed as JP-A-62-83230. I am applying.

The present invention relates to an improvement of a moving portion of a rear section door of the above-mentioned application, and to move the rear section door more lightly, strongly and accurately.

[Means for Solving the Problems]

In order to solve the above problems, the device of the present invention is provided with a double rod type hydraulic cylinder in a case attached to the chassis side,
A guide wheel that rotates in the vertical direction is provided in front of and behind the tip of the cylinder rod of the double rod hydraulic cylinder.
A fixed guide wheel that rotates horizontally in the bottom of the case is provided closer to the center than the guide wheel, and the other end of the connecting member that has one end fastened to the approximate center of the gate width on the gate side is closer to the front and rear guide wheels. It is fixed to the case via the fixed guide car, the other guide car, and the center of the guide car.

Further, in the device of the present invention, both rod type hydraulic cylinders are provided in a case attached to the chassis side, and a guide wheel that rotates in the vertical direction is provided at the tip of the cylinder rod of the both rod type hydraulic cylinders, and one end is on the door side. The other end of the connecting member fixed to the substantially central portion of the gate width is fixed to the case via the guide wheel and closer to the center than the guide wheel.

[Action]

Next, the operation of the device of the present invention will be described with reference to the drawings. Since a double rod type hydraulic cylinder is used as a means for moving the gate, the gate can be moved in either the left or right direction by supplying hydraulic pressure to the cylinder. Also, it can be stopped accurately at any position.

In the truck cargo box shown in FIGS. 1 to 4, in order to open the top of the cargo bed (1), first, the roof member (13) on the open side of the cargo bed (1) is moved to the hydraulic cylinder (12) on the roof. ), The hydraulic pressure is supplied to both rod type hydraulic cylinders (6) below the rear gate (2), and the cylinder rod (7) on the opposite side to the open side is projected, The rope (10) that engages with the pulley (8) at the tip of the cylinder rod (7) is pulled in the protruding direction of the cylinder rod (7),
The guide rod (3) fixing the rope (10) moves together with the gate (2) in the protruding direction of the cylinder rod (7) and opens the opposite side.

Then, the rope (10) passes through the two movable pulleys (8) at the tip of the cylinder rod (7) and one fixed pulley (9) at the bottom of the case (4), and one end of the rope (10) becomes the case (4). Since the other end is fixed to the guide rod (3) of the gate (2), when the cylinder rod (7) is projected, it can be moved a long distance with a small cylinder stroke.

Next, in the truck packing box shown in FIG. 5, one pulley (8) is provided at the tip of the cylinder rod (7), one end of which is the case (4) and the other end is Since the rope (10) fixed to the guide rod (3) of the gate (2) is engaged, if the cylinder rod (7) on the opposite side to the opening side is projected, the rope (10) is engaged like the above-mentioned action. The door (2) is moved toward the protruding cylinder rod (7) by pulling on (10).

The moving distance of the door (2) is one movable pulley,
It can move a long distance with a short cylinder stroke.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 4, (1) is a cargo carrier of a truck packing box, and (2) is a rear part of the cargo carrier (1). It ’s a gate,
A rear portion of the roof tilting member (A) is mounted on the upper surface of the gate (2).

A guide rod (3) having a substantially I-shaped cross section is fixed to the lower surface of the rear gate (2).

(4) is a case laterally provided on the rear part of the loading platform (1) on the chassis (5).

A double rod type hydraulic cylinder (6) is installed in the center of the case (4), and the front and rear of the cylinder rods (7) and (7) rotate vertically such as two pulleys (8). A guide car is installed.

Reference numeral (9) is a fixed guide wheel which is a bottom surface of the case (4) and is horizontally rotated such as a fixed pulley provided closer to the center of the case than the pulley (8) and between the front and rear pulleys (8).

One end of (10) is fixed to a bracket (14) provided at a substantially central portion of the lower surface of the guide rod (3) of the gate (2), and the other end is fixed pulley (9) from one of the front and rear pulleys (8). It is a connecting member such as a rope which is engaged with the other pulley (8) and is fixed to a bracket (15) provided on the inner wall of the case (4) closer to the center than the pulley (8).

By operating both rod-type hydraulic cylinders (6), the gate (2) moves sideways together with the guide rod (3) pulled by the rope (10), but two movable pulleys. And since it has one fixed pulley, it can move four times the cylinder stroke.

A front wall (11) is installed at the front of the loading platform (1), and a case (4 ') is attached to the upper surface of the front wall (11) in the longitudinal direction, and inside the case (4'). A double rod type hydraulic cylinder (6 ') is installed in the center of the rear of the loading platform, and the tip of the cylinder rods (7'), (7 ') rotates in the vertical direction such as two pulleys (8') forward and backward. There are a moving guide wheel and a fixed guide wheel that rotates horizontally such as a fixed pulley (9 ') between the front and rear pulleys (8') closer to the center than the pulley (8 ') on the bottom surface of the case (4'). It is installed.

A rope (10 ') is engaged with each of the two pulleys (8') (8 ') and the fixed pulley (9') in the same manner as in the rear portion of the loading platform, and one end of the rope (10 ') is a roof-raising member. The front part of (A) is attached to a substantially central portion of a guide rod (3 ') having a substantially I-shaped cross section, and the other end is attached to a case (4').

By actuating the double rod type hydraulic cylinder (6 '), the guide rod (3') pulled by the rope (10 ').
At the same time, the roof tilting member (A) moves laterally.

The roof tilting member (A) is a guide rod (3 ') at the front of the loading platform (1).
It is composed of a hydraulic cylinder (12) provided on the upper and rear gates (2) and a roof member (13) opened and closed by the hydraulic cylinder (12).

The moving structure on the front wall (11) of the cargo bed is a positive moving structure having both rod-type hydraulic cylinders (6 ') like the moving structure under the door (2) at the rear part of the cargo bed. However, the present invention is not limited to such a configuration, and the guide rod (3 ') simply passively moves on a roller (not shown).
Even if it has no driving force, it can be moved by the rear driving force.

FIG. 5 shows a moving device for the rear section door (2) of the loading platform, which is also provided with the double rod type hydraulic cylinders (6). In this case, in the center of the case (4) attached to the chassis (5) side, A rod type hydraulic cylinder (6) is provided, and a guide wheel such as a vertically rotating pulley (8) is attached to the tip of the cylinder rod (7) of both rod type hydraulic cylinders (6). .

One end of the pulley (8) is fixed to a bracket (16) provided at the substantially central portion of the guide rod (3) fixed to the door (2), and the other end of the pulley (8) is closer to the case than the pulley (8). A connecting member such as a rope (10) fixed to a bracket (17) provided on the bottom surface of the case (4) near the center is engaged.

When the double rod type hydraulic cylinder (6) is operated, the rope (10) is pulled on the protruding side of the cylinder rod (7) to move the door (2) in that direction, but one movable Since it has a pulley (8) that moves, it is possible to move a distance twice the cylinder stroke.

Also, the moving structure on the front wall of the loading platform is the same as the moving structure under the door as before, but it is positively moved by the driving force under the door (2) without having a double rod hydraulic cylinder. What is possible is the same as before.

In addition, you may use a sprocket instead of the pulley (8) and fixed pulley (9) of this invention, and in that case, a rope (10)
Will use roller chains.

〔The invention's effect〕

According to the present invention, since the double rod type hydraulic cylinder is provided as the means for moving the door of the luggage carrier, the vehicle can be moved in any direction from the center of the luggage carrier to the left or right.

Further, by providing the movable pulley and the fixed pulley, it is possible to make many movements with a small cylinder stroke.

Further, it is a useful invention with a great effect that it is compact due to a small cylinder stroke, can be used within the regulation of the vehicle width, and is powerful because of the cylinder movement, and can stop the gate at an arbitrary position accurately. .

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of the device of the present invention, FIG. 2 is a partial perspective view of the same, FIG. 3 is a partial plan view of the same, FIG. 4 is a side view of the same, and FIG. It is the rear view which showed the other Example of the invention apparatus. Reference numeral (1) is a luggage carrier (2) is a door (4) is a case (6) is a double rod hydraulic cylinder (7) is a cylinder rod (8) is a pulley (9) is a fixed pulley (10) is a rope

Claims (2)

[Claims] 1. A double-rod hydraulic cylinder is provided in a case attached to the chassis side, and a guide wheel that rotates in the vertical direction is provided before and after the tip of a cylinder rod of the double-rod hydraulic cylinder. Also, a fixed guide wheel that rotates horizontally in the bottom of the case near the center,
The other end of the connecting member, one end of which is fixed to approximately the center of the gate width on the side of the door, passes through the fixed guide wheel from one of the front and rear guide wheels, and passes through the other guide wheel to the case closer to the center than the guide wheel. A door moving device for a fixed truck packing box. 2. A double rod type hydraulic cylinder is provided in a case attached to the chassis side, a guide wheel which rotates in a vertical direction is provided at the tip of a cylinder rod of the double rod type hydraulic cylinder, and one end of the double sided hydraulic cylinder is provided on the door side. A door moving device for a truck packing box, wherein the other end of a connecting member fixed to a substantially central portion of the gate width is fixed to a case via the guide wheel and closer to the center than the guide wheel.