JPH0326008Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a cargo platform roof tilt mechanism of a vehicle.
In particular, the present invention relates to a loading platform roof tilting mechanism for a vehicle such as a truck, which raises the loading platform roof during cargo handling and makes it possible to easily load cargo up to the full height of the loading platform using a forklift or the like. (Conventional technology and problems) In conventional cargo vehicles with roofs and open sides, the height of the roof was fixed, so when loading cargo using a forklift, the height of the cargo platform to the roof was limited. It was difficult to fully load cargo, and there was a dislike for not being able to fully utilize the loading capacity of the loading platform.

(Means for Solving the Problems) In view of the above points, the present invention makes it possible to raise and lower the roof of the loading platform using an extremely simple mechanism, making it easier to carry out cargo handling operations using forklifts, etc. The purpose of the present invention is to provide a vehicle loading platform roof tilting mechanism that allows cargo to be loaded to its full height.

In the present invention, a frame body is erected at the front and rear parts of a vehicle loading platform, a roof is placed on the frame body, and rods having a locking member at the lower end and hanging inside the frame body are attached to the four corners of the roof. A locking mechanism for locking the locking member is provided on each of the frame sides, and the left or right rod having the locking member locked by the locking mechanism can be used to lock the locking member on the left or right side of the roof. The side edges serve as rotational fulcrums for the roof, allowing it to pivot freely. Further, one end of a tilt arm is pivotally attached to the upper side of the frame, and a cylinder is pivotally attached between a pivot point on the upper side of the frame different from the tilt arm and the tip of the tilt arm. The tip of the tilt arm moves up and down in response to expansion and contraction of the cylinder, and an extension link is pivotally connected between the tip of each tilt arm and intermediate portions of the front and rear edges of the roof. By these means, the above-mentioned conventional problems are solved.

(Function) The vehicle loading platform roof tilting mechanism of the present invention is configured such that when one side edge of the loading platform roof is pivotally supported to a frame erected on the loading platform, the roof is tilted by a link mechanism on the upper side of the frame. The other side edge can be lifted up. Then, with the roof raised, cargo can be loaded onto the loading platform using a forklift or the like. In this case, since the roof is raised, even cargo that is full to the height of the original loading platform can be easily loaded using a forklift or the like. When the vehicle is running after loading, the roof is returned to its original height and locked. By lifting the roof and loading and unloading cargo, it is possible to easily unload cargo that is full to the height of the loading platform.

(Example) Hereinafter, an example of the vehicle loading platform roof tilt mechanism according to the present invention will be described with reference to the drawings.

1 to 4 show a mechanical portion of an embodiment of a vehicle loading platform roof tilting mechanism, and FIG. 5 shows a hydraulic circuit, respectively.

In these figures, frames 2 and 3 are fixed upright at the front and rear parts of the loading platform 1 of a truck, respectively, a side gate 4 is provided on the side of the loading platform so that it can be opened and closed, and a rear gate is installed at the rear of the loading platform. 5 (or a metal panel closing the rear surface). The front of the loading platform is closed off with a metal panel.

The roof 6 is rectangular, and is made of, for example, a roof frame 7 covered with a canopy 8. A rod 1 in which a pivot member 9 is fixed to the upper end and a locking member 10 is fixed to the lower end.
1 are pivotally attached by pinning the pivot members 9 to the four corners of the roof frame 7, and hang down inside the frames 2 and 3.

At the lower ends of both the left and right sides of the frames 2 and 3, there are a locking plate 12 and a lock handle 1 as shown in FIGS. 3 and 4.
3. Lock mechanisms 15 each having a release plate 14 are arranged. The locking plate 12 and the release plate 14 are fixed to the frames 2 and 3, and the lock handle 13 passes through a mounting plate 16 fixed to the frames 2 and 3. The locking plate 12 is biased by a compression spring 18 provided between the locking plate 12 and the locking plate 12 so that the locking plate 12 passes through the hole. In the unlocked state where the lock handle 13 is pulled out from the locking plate 12 and hooked on the release plate 14, the micro switch MS1, MS2, MS3 or MS4 for detecting the unlocked state is activated by the lock handle 13. It's summery. however,
MS1 is the right side of the front frame 2, MS2 is the rear frame 3
MS3 corresponds to the left side of the front frame 2, and MS4 corresponds to the left side of the rear frame 3.

Note that a guide plate 1 is provided in the frames 2 and 3 in order to guide the locking member 10 at the lower end of the rod 11 between the locking plates 12.
9 is fixed.

At the center of the upper side of the front frame 2 and the rear frame 3, as shown in FIGS. 1 and 2, there is a mounting bracket 2.
0 is integrated, and the mounting bracket 20
One end of a tilt arm 21 is pivotally connected to an upper position of the mounting bracket 20, and one end of a single-acting hydraulic cylinder 22 is pivotally connected to a lower position of the mounting bracket 20 (a pivot point remote from the pivot point of the tilt arm 21). Ru. The other end of the tilt arm 21 and the other end of the cylinder 22 are both pivotally connected to one end of an extension link 23, and the other end of the extension link 23 is pivotally connected to a bracket 24 fixed to the roof frame 7.

The bracket 24 is attached to the roof frame 7 at an intermediate portion between the front edge and the rear edge.

Figure 5 shows a single-acting hydraulic cylinder 2 that moves up and down the roof 6.
2 (two in total, corresponding to the front and rear of the roof), and is a power unit equipped with a pump P, a motor M that rotates it, an oil tank, etc.
Oil from the PU is supplied to hydraulic cylinders 22 on the front and rear sides of the roof. In addition,
Electromagnetic switch SW1 is the battery on the freight vehicle side.
It connects the BT and the motor M of the power unit PU, and the changeover switch SW2 instructs the roof 6 to rise or fall. R
1, R3 is a relay, and SOL is a solenoid valve for circulating oil.

In normal driving conditions, the roof 6 is placed on the front and rear frames 2 and 3, as shown by the solid line in FIG. The locking member 10 at the lower end is locked with a lock handle 13 as shown by the solid line in FIG. That is, the lock handle 13 penetrates both the frame-side locking plate 12 and the locking member 10 to prevent the rod 11 from coming off.

Next, when loading and unloading from the right side of the loading platform 1, the lock handle 13 on the lower right side of the frames 2 and 3
is set to the release position as shown by the imaginary line in FIG. 4, and the changeover switch SW2 in FIG. 5 is turned upward. Then, the micro switches MS1 and MS2 on the right side of the frame
detects unlocking and is turned on.
Relay R1 is energized, normally closed contact of relay R3,
Closed contact of relay R1 and micro switch
Electromagnetic switch SW1 is energized via MS2 and closed, and motor M of power unit PU is activated. As a result, oil from the power unit PU is supplied to the single-acting hydraulic cylinder 22, and as a result of the cylinder 22 extending, the tip of the tilt arm 21 rises, and the right edge of the roof 6 is lifted via the extension link 23. . At this time, the left edge of the roof 6 serves as a pivot point.

On the other hand, when handling cargo from the left side of the loading platform, the lock handle 13 on the left side of the lower end of the frames 2 and 3 is moved to the fourth position.
Set it to the release position as shown by the imaginary line in the figure, and switch the changeover switch SW2 in FIG. 5 to the upper position. Then, since the micro switches MS3 and MS4 on the left side of the frame detect the lock release and are turned on, relay R3 is energized, and the relay R3 is energized through the normally closed contact of relay R1, the closed contact of relay R3, and the micro switch MS4. The electromagnetic switch SW1 is energized and closed, and the motor M of the power unit PU is activated.
As a result, the cylinder 22 moves and the left side edge of the roof 6 is lifted using the right side edge as a pivot point.

The roof 6 can be lowered by switching the changeover switch SW2 downward, energizing the solenoid valve SOL, and causing the oil in the single-acting hydraulic cylinder 22 to flow back to the power unit PU via the solenoid valve SOL. Note that if you accidentally forget to release either the front or rear lock and turn the changeover switch SW2 upward, the motor M will not be energized.

(Effects of the invention) As explained above, according to the vehicle loading platform roof tilting mechanism of the present invention, frames are erected at the front and rear parts of the vehicle loading platform, the roof is placed on the frames, The left and right side edges of the roof can be pivoted to the frame,
one end of the tilt arm is pivotally connected to the upper side of the frame;
A cylinder is pivotally connected between a pivot point on the upper side of the frame different from the tilt arm and the tip of the tilt arm, so that the tip of the tilt arm moves up and down in response to expansion and contraction of the cylinder, Since the structure is such that an extension link is pivotally connected between the tip and the roof, when one side edge of the loading platform roof is pivotally supported to a frame erected on the loading platform, the upper side of the frame A side linkage allows the other side edge of the roof to be raised. As a result,
With the roof raised, cargo can be loaded and unloaded onto the loading platform using a forklift. In this case, since the roof is raised, even if the cargo is full to the height of the original loading platform, it can be easily handled by a forklift or the like.

In addition, whether the left or right side of the roof is used as the opening/closing fulcrum can be selected as appropriate by locking the left or right side of the rods pivoted on the front, rear, left, and right sides of the roof, respectively, to the frame, and the cylinders on the front and rear Only one piece is required for each frame, and the structure is simple.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a vehicle loading platform roof tilt mechanism according to the present invention, FIG. 2 is a front view of the main parts of the embodiment, such as a frame, a link mechanism, and their surroundings;
FIG. 3 is a side view of the frame portion, FIG. 4 is a perspective view showing the locking mechanism at the bottom of the frame, and FIG. 5 is a hydraulic circuit diagram. DESCRIPTION OF SYMBOLS 1... Loading platform, 2... Front frame, 3... Rear frame, 6... Roof, 7... Roof frame, 9... Pivoting member, 10... Locking member, 11... Rod, 12...
...Latching plate, 13...Lock handle, 20, 24
...Bracket, 21...Tilt arm, 22...
...Single acting hydraulic cylinder, 23...Extension link, MS
1 to MS4...Micro switch.

Claims (1)

[Scope of utility model registration request] Frames 2 and 3 are erected at the front and rear parts of the vehicle loading platform, a roof is placed on the frames, and a locking member 1 is installed at the lower end.
a rod 11 having a diameter of 0 and hanging within the frames 2 and 3;
are pivotally attached to the four corners of the roof, respectively, and a locking mechanism for locking the locking member 10 is attached to the frames 2 and 3.
A left or right rod 1 having a locking member 10 provided on each side and locked by the locking mechanism.
1, the left or right side edge of the roof can be freely pivoted as a rotation fulcrum of the roof, and the frames 2, 3
One end of a tilt arm 21 is pivotally attached to the upper side, and a cylinder 22 is pivotally attached between a pivot point on the upper side of the frame different from the tilt arm and the tip of the tilt arm, so that the cylinder can be expanded and contracted. The cargo bed roof of a vehicle is characterized in that the tips of the tilt arms are raised and lowered in accordance with the conditions, and extension links 23 are pivotally connected between the tips of each tilt arm and intermediate portions of the front and rear edges of the roof. Tilt mechanism.