JPS607949Y2 - canopy hinge mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a canopy hinge mechanism that is installed on a cargo box of a dump truck or the like and that allows the canopy to maintain airtightness with the cargo box to open and close.

Generally, a packing box is sometimes provided with a canopy to prevent rainwater from entering or scattering of loaded objects.

Conventionally, canopy devices having various opening/closing mechanisms have been devised and put into practical use for this purpose.

FIG. 1 shows a schematic configuration diagram of this type of canopy device, with A being a front view thereof and B being a plan view thereof.

In the figure, the canopy 2 is made of steel plate, and has an airtight member (packing) 4 interposed between it and the upper edge 3 of the loading box 1, and closes the upper edge 3 of the loading box 1. Maintain airtightness with.

A plurality of hinges 5, 6 are provided on the outside of the upper end portions of both side walls 7, 8 of the cargo box 1, and pivotally support the canopy 2.

Hydraulic cylinders 9 provided at the front and rear of the canopy 2 have one end pivotally supported by a hinge 10 provided on the canopy 2, and the other end pivotally supported by a hinge 11 provided on the upper surface of the cargo box 1.

Now, arbitrarily select the opening/closing direction of the canopy 2, for example, the side wall 7.
Insert and lock the hinge pin 12 into the side hinge 5,
After the hinge pin 13 of the hinge 6 on the side wall 8 side is released to release the lock, the hydraulic cylinder 9 is extended to open the canopy 2 toward the side wall 7 with the hinge pin 12 as the axis.

2A shows the most open state of the canopy at this time. On the other hand, if the hinge pin 13 is inserted and locked into the hinge 6 on the side wall 8 side, the hinge pin 12 of the hinge 5 on the side wall 7 side is released to release the lock, and the hydraulic cylinder 9 is extended, the hinge pin 13 The canopy 2 is opened toward the side wall 8 about the axis.

2B indicates the maximum open state of the canopy 2 at this time.

Moreover, both the canopies 2A and 2B in the open state move in the closing direction due to the contraction of the hydraulic cylinder 9 and close the upper edge 3 of the cargo box 1.

At this time, the closing force due to the dead weight of the top M2 and the contraction of the hydraulic cylinder 9 applies pressure to the packing 4 interposed between the top M2 and the upper edge 3 of the cargo box 1 to maintain airtightness.

However, if the opening/closing direction of the canopy 2 is arbitrarily selected, for example,
The hinge pin 13 of the hinge 6 on the side wall 8 side is removed to release the lock, and the canopy 2 is opened to the side wall 7 side.

After this opening, when the canopy 2 is closed again, the hinge pin 13 is inserted into the hinge 6 on the side wall 8 side and locked.

At this time, even if there is a slight misalignment between the canopy 2 and the packing box 1, it will be difficult to insert the hinge pin 13 into the hinge 6, and if the hinge pin 13 is inserted forcibly, the hinge 6, the hinge pin 13, or the canopy 2 may be damaged. There was a risk of giving.

In view of the above-mentioned points, it is an object of the present invention to provide a canopy hinge mechanism that eliminates the drawbacks of the prior art, has a simple structure, is easy to handle, and can withstand long-term use.

According to the present invention, this purpose is achieved by: a fixed hinge base fixed to the outside of the upper edge of both side walls of the packing box and having a fixed shaft horizontally at the upper end; a movable hinge plate having a groove that is opened in a shape and engages with the upper side of the fixed shaft, and a rotating plate whose one end is rotatably pivoted by a pivot portion provided at the upper end of the movable hinge plate;
One end is a rotating plate holding metal fitting that is held integrally with the rotating plate at a predetermined angle, the other end is a rocker arm that is an arm portion that rotates the rotating plate, and one end is a rocker arm that is an arm part that rotates the rotating plate, and one end is a rotating plate holding metal fitting that is held integrally with the rotating plate at a predetermined angle. a hook portion that engages with the lower side and locks the canopy together with the groove portion to the upper edge of the cargo box; The arm portion of the rocker arm is rotated toward the outside of the canopy to move the rocker downward and release the hook portion of the rocker from the fixed shaft of the fixed hinge base. This is achieved by maintaining only the engagement between the groove of the movable hinge plate and the fixed shaft of the fixed hinge stand.

According to the present invention, the canopy extends inward from the center line connecting the fixed shaft center of the locker and the pivot center of the movable hinge plate so as to maintain airtightness with the cargo box. Located at the center of the cardinal branch.

Furthermore, according to the present invention, the rotating plate is provided with an elastic member that has a tensile force in the inner direction of the canopy.

Next, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 2 shows a schematic configuration diagram of an embodiment of the present invention, in which A is a front view of the locked state and B is a side view thereof.

In the figure, parts having the same functions as those in FIG. 1 are given the same reference numerals.

The fixed hinge bases 14 are two flat plates that are fixed to the outside of the upper edges of the side walls 7 and 8 of the cargo box 1 at a required interval by welding or the like.

The distal end portion thereof is slightly opened outward to facilitate reception of the movable hinge plate 15.

Further, a fixed shaft 16 is fixed in the lateral direction to the distal end portion.

The movable hinge plates 15 are two flat plates that are fixed to the outside of both side walls of the canopy 2 between the fixed hinge bases 14 with a required spacing by welding or the like.

Note that the lower end has a groove 17 that engages with the upper side of the fixed shaft 16.
It opens downward in the shape of a mountain.

A pivot portion 18 is provided at the upper end portion, and one end of a rotating plate 19 is rotatably pivoted by a movable shaft 20 .

21 is a pin for preventing the movable shaft 20 from falling off.

The other end of the rotating plate 19 is integrally connected to the rotating plate connecting fitting 23 of the rocker arm 22 by a connecting shaft 25 at a predetermined angle.

24 is an arm portion of the rocker arm 22.

The rocker 26 has a hook portion 27 at its lower end and a pivot portion 28 at its upper end.

The hook portion 27 can engage with the lower side of the fixed shaft 16 to lock the canopy 2 to the upper edge of the cargo box 1 together with the groove portion 17 of the movable hinge plate 15.

The pivot portion 28 is rotatably supported around the connecting shaft 25 of the rotating plate connecting fitting 23 as an axis.

One end of the elastic member, a coil spring 31 in this embodiment, is connected to the rotating plate 19, and the other end is connected to the support plate 32 fixed to the upper part of the canopy 2, and the elastic member is connected to the rotating plate 19 in the inner direction of the canopy 2. gives a tensile force of

Furthermore, a round bar 30 is fixed to the upper edge of the cargo box 1 by welding or the like, and a packing 29 is provided on the periphery of the canopy 2.

Furthermore, 26A is the inner surface of the locker 26 and comes into contact with the outer periphery of the movable shaft 20 when the canopy 2 is locked to the cargo box 1 by the locker 26.

The center line A-A is a straight line connecting the center of the fixed shaft 16 and the center of the movable shaft 20.

Next, the functions of the present invention having the above-described configuration will be explained.

FIG. 2 shows a state in which the canopy 2 is locked to the upper edge of the cargo box 1.

The hook portion 27 of the locker 26 is engaged with the lower side of the fixed shaft 16, and the rocker arm 22 is moved from the outside of the canopy 2 toward the inside.
When the hook portion 27 that engages with the fixed shaft 16 is rotated about the rotary shaft 20 via the rotary plate 19, the movable hinge plate 15.

When the center of the connecting shaft 25 reaches the center line A-A, this position is the so-called top dead center of the connecting shaft 25, and the movable hinge plate 15
gives the maximum amount of descent.

At this time, the fixed shaft 16 substantially contacts the upper end of the groove 17 of the movable hinge plate 15.

However, this top dead center is unstable, and the rocker arm 22 is stopped at a position where the rocker arm 22 has rotated slightly inward of the canopy 2 when the inner surface 26A of the rocker 26 comes into contact with the outer periphery of the movable shaft 20.

In addition, the coil spring 31 applies a tensile force inward to the canopy 2, so that a stable state can be maintained.

Therefore, the canopy 2 is kept in a locked state on the upper edge of the cargo box 1 by the close contact between the packing 29 and the round bar 30.

Next, FIG. 3 shows a schematic configuration diagram of the unlocked state in FIG. 2.

In the figure, if the rocker arm 22 is rotated from the inside of the canopy 2 to the outside through the rotation plate 19, about the rotation shaft 20, and beyond the center line A-A, the rocker 26 will move downward. The hook part 27 of the locker 26 and the fixed hinge base 14 move.
is disengaged from the fixed shaft 16, and the fixed shaft 16 engages only with the groove 17 of the movable hinge plate 15, and the canopy 2 and the cargo box 1
The locked state with is released.

Further, since the tensile force of the spring 31 acts on the rotating plate 19, after the engagement between the hook portion 27 and the fixed shaft 16 is released, the rotating plate 19 and the rocker arm 22 are The portion 24 rotates until it touches the top M2 and is held at that position.

A plurality of such hinge mechanisms are provided on both side walls of the packing box 1 and the canopy 2, respectively.

Therefore, as shown in FIG. 1, by operating only the hinge mechanism on either side of the packing box 1 or the canopy 2 to release the locked state, the hinge mechanism on the other side wall will be the axis.
By operating the hydraulic cylinder 9, the canopy 2 can be easily opened.

After the canopy 2 that has been opened in this way is closed again by the operation of the hydraulic cylinder 9 in the opposite direction, the hinge mechanism is operated to maintain the airtight locked state between the canopy 2 and the cargo box 1. Can be done.

As explained above, according to the present invention, by operating the rocker arm, the engagement between the fixed shaft of the fixed hinge base and the hook of the locker is maintained, the airtightness between the canopy and the cargo box is maintained, and the canopy is By providing a simple hinge means that acts as a hinge when opening the canopy, and the canopy can be easily opened when the lock is released, the structure is simple, the handling operation is easy, and the canopy can withstand long-term use. It has this effect.

Although the embodiment of the present invention will be described as a hinge mechanism of a canopy device that is equipped with a hydraulic cylinder and opens the entire canopy to any side wall of a cargo box, the present invention is not limited to this. Also, in a canopy provided with a cleaning opening for cleaning and spotting, the present invention is extremely effective as a canopy hinge mechanism that allows the canopy to be easily attached to or removed from a cargo box.

[Brief explanation of drawings]

FIG. 1 shows a schematic configuration diagram of the canopy device, A is a front view thereof, B is a plan view thereof, FIG. 2 is a schematic configuration diagram of an embodiment of the present invention, A is a front view in the locked state, B 3 is a side view thereof, and FIG. 3 is a schematic configuration diagram in the unlocked state of FIG. 2. 1... Packing box, 2... Canopy, 14...
...Fixed hinge stand, 15...Movable hinge plate,
16... Fixed shaft, 17... Groove, 18
... Pivot part, 19 ... Rotating plate, 20.
...Movable axis, 22 ...Middle Tsuka Arm, 2
5...Connection shaft, 26...Rocker, 2
7...Hook part, 29...Patsukin, 30
...Round bar, 31...Spring.

Claims (1)

[Claims for Utility Model Registration] 1. In a canopy 2 that maintains airtightness with the packing box by an airtight member 29 provided between it and the upper edge of the packing box, there is a A movable hinge base 14 that is fixed and has a fixed shaft 16 in the horizontal direction at its upper end; and a movable hinge base 14 that is fixed to the outside of both side walls of the canopy and has a chevron-shaped opening at its lower end and a groove 17 that engages with the upper side of the fixed shaft. a hinge plate 15;
A pivot portion 1 whose one end is provided at the upper end of the movable hinge plate
A rotating plate 19 is rotatably pivoted by a rotating plate 8, and a rotating plate connecting fitting 23 whose one end is held integrally with the rotating plate at a predetermined angle, and the other end is pivotable to the rotating plate. a rocker arm 22 which is an arm part 24 that provides a locking mechanism, a hook part 27 that engages with the lower side of the fixed shaft to lock the canopy together with the groove to the upper edge of the cargo box, and the other end that a rocker 26 which is a pivot support 28 rotatably supported on the moving plate interlocking fitting; the rocker arm is rotated toward the outside of the canopy to move the rocker downward; A canopy hinge mechanism characterized in that the hook part of the locker is disengaged from the fixed shaft of the fixed hinge base, and only the engagement between the groove part of the movable hinge plate and the fixed shaft of the fixed hinge base is maintained. 2. In the statement of claim 1 of the utility model registration, the canopy is located along the center line A- which connects the center of the fixed shaft of the locker and the center of the pivot part of the movable hinge plate so as to maintain airtightness with the cargo box.
A canopy hinge mechanism characterized in that the pivot center of the rocker is located toward the inside of the canopy. 3 In the description of claim 1 of the utility model registration, the rotating plate is an elastic member 31 having a tensile force in the inner direction of the canopy.
A canopy hinge mechanism characterized by providing.