JP2002121962A - Wing body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wing body structure quickly and easily locking and releasing the opening of a wing roof and firmly retaining the locked state. SOLUTION: A link member 30 moving between a first position and a second position for engaging and releasing a lock device 32 by the contracting and extending operation of a hydraulic cylinder 26 is fitted to the wing roof 22. The engagement between an engagement part 44 of the link member 30 and the lock device 32 is released by moving the link member 30 to the second position by the extending operation of the hydraulic cylinder 26 so that the wing roof 22 is opened. On the other hand, the wing roof 22 is closed by contracting operation of the hydraulic cylinder 26. This wing body structure is so constituted that, when the link member 30 is moved to the first position and the wing roof 22 is completely closed, the engagement of the engagement part 44 of the link member 30 to the lock device 32 is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wing body structure and, more particularly, to a wing roof that covers at least a part of a ceiling portion and is rotatably mounted up and down. The present invention relates to an improvement in a wing body structure that can be opened and closed by movement.

[0002]

2. Description of the Related Art Heretofore, as a kind of truck carrier (body), a flat plate that covers a part or all of a ceiling or a ceiling and a side between a front wall and a rear door frame of the carrier. A wing roof having an L-shaped cross section or an L-shaped cross section is vertically rotatably mounted, while one end of a hydraulic cylinder is connected to the inside of the wing roof, and the wing roof is turned up and down by the expansion and contraction operation of the hydraulic cylinder. Wing bodies are known which can be moved to open and close. If a wing body having such a structure is used, the use of a hood is not required, and the cargo handling operation can be performed quickly. Therefore, the number of used wing bodies is increasing year by year.

In such a wing body, as a structure for preventing the wing roof from being opened from a fully closed state, a simple lock structure comprising a hook fitting and a locking fitting engaged with the hook fitting is generally employed. Have been. That is, a plurality of hook fittings are provided at the end of the wing roof at a fixed distance in the front-rear direction of the carrier, while the hooks extend from the side surfaces of the floor of the carrier or the floor. Or a plurality of known locking fittings which are manually hooked and locked to the hook fitting on the side or the like, and the release of the locked state with respect to the hook fitting is performed by a simple manual operation. Are provided corresponding to the respective hook fittings. Then, when the wing roof is fully closed, the opening of the wing roof can be locked by locking a plurality of locking fittings to the respective hook fittings.

However, in a wing body adopting such a lock structure, when a wing roof is fully closed and its release is locked, and when the lock is released, a plurality of locking fittings are required. Since it is necessary to manually lock each one of the hooks or release the locked state by manual operation, the longer the total length of the hooks and the number of hooks becomes, the longer the wing Because the locking operation of the roof was troublesome, and the locking state of the locking fitting and the hook fitting was not so strong as to be easily released by manual operation, for example, When the truck rolls over due to an accident, the locking of the wing roof due to the locking of the locking fitting and the hook fitting is easily released due to the impulse, thereby loading the load. It is than had been the often large problem that went would jump out to the outside is induced.

[0005]

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to open a wing roof from a fully closed state, which is troublesome. It can be easily locked without necessity, and the locked state can be maintained more firmly,
Moreover, it is an object of the present invention to provide an improved structure of a wing body in which the locked state of the wing roof can be easily and easily released.

[0006]

According to the present invention, in order to solve the above-mentioned problem, a wing roof that covers at least a part of a ceiling portion between a front wall and a rear door frame of a cargo bed is rotatable up and down. On the other hand, one end of a hydraulic cylinder is connected to the inside of the wing roof, and the wing roof is rotated up and down by expansion and contraction operation of the hydraulic cylinder so that the wing roof can be opened and closed. In the body structure, a link member movable between a first position and a second position is attached to the wing roof, and an engaging portion is provided on the link member, and the engaging portion is The movement of the link member to the first position engages the locking device, while the movement of the link member to the second position causes the engagement between the engaging portion of the link member and the locking device. Release The link member is moved to the second position by the extension operation of the hydraulic cylinder, thereby disengaging the engagement portion of the link member from the lock device, and While the roof was opened, the wing roof was closed by the contraction operation of the hydraulic cylinder, the link member was moved to the first position side, and the wing roof was completely closed. The gist of the invention is a wing body structure wherein the engagement portion of the link member is completely engaged with the lock device.

In short, in the wing body structure according to the present invention, the wing roof is closed by the contraction operation of the hydraulic cylinder having one end connected to the inside of the wing roof, and the wing roof is attached to the wing roof. The link member is moved to a first position where it can be engaged with the locking device at the engagement portion, and when the wing roof is completely closed, the engagement provided on the link member is established. The engagement of the part with the locking device is completed, the opening of the wing roof is prevented,
It can be locked.

Therefore, in such a wing body structure, in order to lock the opening of such a wing roof, a plurality of locking fittings are manually locked to a plurality of hook fittings one by one. Unlike the conventional wing body structure that must be used, the locked state of the wing roof can be obtained at once by automatic operation.

In the wing body structure according to the present invention, when the hydraulic cylinder is extended, the link member releases the engagement of the engaging portion with the locking device, and the wing roof is opened. The first movement in which the link member engages with the locking device at the engagement portion while the contracted state of the hydraulic cylinder is maintained because the hydraulic cylinder is moved to the second movement position to be performed. Since it is impossible to move from the position, the engaging state of the engaging portion of the link member with the locking device can be reliably and stably maintained, and the open locked state of the wing roof can be firmly maintained. is there.

Further, in the wing body structure according to the present invention, as described above, the link member is moved to the second position by the extension operation of the hydraulic cylinder, so that the engagement portion of the link member engages with the lock device. In order to release such a locked state of the wing roof, the locking state of the plurality of locking fittings with respect to the plurality of hook fittings is manually released one by one from where the wing roof is to be released. Unlike the conventional wing body structure that must be used, the unlocked state of the wing roof is also released,
It can be performed all at once by automatic operation.

Therefore, according to the wing body structure according to the present invention as described above, the wing roof can be easily released from the fully closed state without any troublesome work, and the locked state is further strengthened. And the locked state of the wing roof can be easily released without any trouble. As a result, not only can the cargo handling work be further speeded up extremely advantageously, but, for example, when the truck rolls over due to an accident, the locked state of the wing roof is released by the momentum, The problem caused by the conventional structure that the loaded luggage jumps out of the loading platform can be effectively solved.

According to a preferred embodiment of the wing body structure according to the present invention, the link member is rotatable up and down, and is rotated upward by the extension operation of the hydraulic cylinder. Accordingly, the hydraulic cylinder is moved and positioned at the second position, while being moved downward by the contraction operation of the hydraulic cylinder, thereby being moved and positioned at the first position. Thus, the link member can be more reliably moved between the first position and the second position with a relatively small acting force.

According to another advantageous aspect of the wing body structure according to the present invention, when the link member moves to the first position by the contraction operation of the hydraulic cylinder, the link member moves to the first position. A first stopper surface which abuts on an inner surface of the wing roof to prevent further movement of the link member to the first position side; A second stopper surface which, when moved to the position, comes into contact with another portion of the inner surface of the wing roof and prevents further movement of the link member toward the second position. Provided on the link member.

In the wing body structure having such a configuration, when the hydraulic cylinder is operated to extend while the wing roof is fully closed, first, the link member is moved from the first position to the second position. The link member is disengaged from the locking device, and the second stopper surface of the link member is brought into contact with the inner surface of the wing roof. The wing roof is pushed up by the hydraulic cylinder via the member and is released. Also, when the hydraulic cylinder is contracted from such an open state of the wing roof, the wing roof is closed,
The link member is moved and positioned from the second position to the first position, and the first stopper surface of the link member is brought into contact with another portion of the inner surface of the wing roof, and the link member is further moved. Since the movement is prevented, the link member is reliably positioned at the first position under the fully closed state of the wing roof.

Therefore, in such a wing body structure according to the present invention, the link member is moved to the second position by the extension operation of the hydraulic cylinder from the fully closed state of the wing roof, whereby the wing roof can be moved. For the first time after the lock state is released, the wing roof is opened, while the hydraulic cylinder contracts
When the wing roof is in the fully closed state, the wing roof can be securely locked, and therefore, the automatic locking of the wing roof and the automatic release of the locked state are not possible.
With the automatic opening and closing operation of the wing roof, the operation can be performed more smoothly and reliably.

Further, according to another preferred aspect of the wing body structure according to the present invention, the engaging portion of the link member is provided on the link member so as to protrude toward the side. On the other hand, the lock device includes an engagement member having an engagement surface that is brought into contact with and engaged with an upper outer surface of the engagement claw. As a result, the upward rotation of the wing roof in the engagement state of the link member with the locking device can be more reliably prevented, and the opening of the wing roof can be more securely locked.

Further, according to another preferred embodiment of the wing body structure according to the present invention, the first outer surface of the lower part of the engaging claw of the link member is provided with the first position from the second position of the link member. Is provided, while the engaging member of the locking device is pressed by a predetermined urging means toward the engaging position at which the engaging claw engages with the engaging claw on the engaging surface. In an energized state, it is movable between the engaged position and the disengaged position,
When closing the wing roof by the contraction operation of the hydraulic cylinder, the link member moved to the first position and slid by the engaging member on the inclined surface, When the engagement member is moved to the release position side against the urging force of the urging means and the wing roof is completely closed,
The engagement member is configured to be returned to the engagement position by the urging force of the urging means, and to be engaged with the engagement claw of the link member.

In the wing body structure having such a configuration, when the wing roof is closed by the contraction operation of the hydraulic cylinder, the link member moves to the first position before the wing roof is fully closed. Even if it is positioned, the engagement member of the lock device that engages with the engagement claw of the link member in accordance with the progress of closing of the wing roof moves between the engagement position with respect to the engagement claw and its release position. At the same time as the closing of the wing roof is completed, the engagement between the engaging claw of the link member and the engaging member of the locking device can be surely completed, and the opening of the wing roof can be opened and closed. The locking can be performed even more smoothly and reliably.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, in order to clarify the present invention more specifically, the configuration of a wing body structure according to the present invention will be described in detail with reference to the drawings.

First, FIGS. 1 to 3 schematically show an example of a wing body having a structure according to the present invention in a front form, a plane form, and a vertical sectional form, respectively. As is clear from these figures, the wing body has a housing shape as a whole, as in the related art. The front wall 12 is located before and after the floor 10.
The rear door frame 14 and the rear door frame 14 are erected in a fixed position. Further, on both side edges of the floor 10 in the width direction, there are provided a jaw 16 having a height of approximately half of each side, It is mounted so as to be rotatable up and down via a plurality of hinges 17.

On the other hand, a central beam 18 extending straight in the front-rear direction is fixedly provided between the front wall 12 and the rear door frame 14 at the center of the ceiling of the wing body. Further, on both left and right sides of the central beam 18, a plurality of rotating shafts 20 are provided, each of which extends a predetermined length in the horizontal direction along the central beam 18, respectively.
Further, wing roofs 22 having an L-shaped cross section, which cover the openings from the central beam 18 to the jaws 16 at the ceiling and the left and right sides, are rotatably mounted via their rotation shafts 20, respectively. Have been.

Inside the pair of wing roofs 22, hydraulic cylinders 26 for projecting / retracting the piston rod 24 by a hydraulic mechanism (not shown) are provided at both ends in the longitudinal direction of the central beam 18. Rotation shafts 2 parallel to the central beam 18, which are located on the left and right sides of the central beam 18 with respect to the mounting base 28 respectively fixed.
Each is attached so that it can rotate around nine. In other words, here, hydraulic cylinders 26 which are operated to expand and contract by a hydraulic mechanism (not shown) are provided on the inside of each of the pair of wing roofs 22, 22 at four positions on the left and right sides of the center beam 18 at the front and rear portions thereof. Each of the hydraulic cylinders 26 is connected to the inner surface of the wing roof 22 at the tip end of each piston rod 24 so as to be rotatable in the same direction as the rotation direction of the roof 22 and to be fixed in position. Have been.

Thus, in the present embodiment, the four hydraulic cylinders 26 disposed inside each of the pair of wing roofs 22 project / protrude the piston rod 24.
Each wing roof 22 is turned up and down (in the direction of arrow A in FIG. 3 and in the direction of arrow A in FIG. 7) by the retracting movement, in other words, by the expansion and contraction operation of each hydraulic cylinder 26, and the opening and closing thereof are performed. It can be done. In FIG. 1, reference numeral 25 denotes a known locking mechanism for locking the opening of the wing roof 22.
A hook fitting having a structure similar to that of the related art, integrally formed at a lower end edge of each wing roof 22 at a predetermined interval in the front-rear direction, and is manually engaged with the hook fitting. It consists of a latch having a conventional structure.

Incidentally, in the wing body of the present embodiment, inside the pair of wing roofs 22 which are opened and closed by the above-described structure, the hydraulic cylinder 26 is disposed at each of the portions. ,
A link member 30 and a lock device 32 which constitute a lock mechanism having a special structure, which is different from the lock mechanism 25 provided by the hook metal and the lock metal provided as a lock mechanism for locking the opening of each wing roof 22, , Respectively.

More specifically, as is apparent from FIGS. 4 to 6, the link member 30 has a vertically long thick flat plate shape as a whole. At one end in the length direction, the bracket is fixed to a bracket 34 fixed to the inner surface of the wing roof 22, and is attached to a rotating shaft 36 parallel to the center beam 18. It is rotatable in the same direction as the rotation direction, that is, in the vertical direction (the direction of arrow A in FIG. 3 and the direction of arrow A in FIG. 7).

Further, in the link member 30, when the wing roof 22 is attached to the inner surface of the wing roof 22 via the bracket 34, the end surface at one end in the length direction which is positioned on the upper side thereof is connected to the central beam 18. It has a substantially inverted V-shape consisting of two inclined surfaces extending upward from the side located on the side and the side opposite to the center toward the center. Then, of the two inclined surfaces at the substantially inverted V-shaped end surface, the inclined surface located on the side of the center beam 18 causes the link member 30 to rotate downward around the rotation axis 36 of the bracket 34. In this case, the first stopper surface 38 is in contact with the inner surface of the wing roof 22 to prevent the link member 30 from rotating further downward. When the link member 30 is rotated upward around the rotation axis 36 of the bracket 34, the inclined surface located in contact with another portion of the inner surface of the wing roof 22 and moves upward of the link member 30. Is formed as a second stopper surface 40 for preventing further rotation.

The link member 30 mounted on the inner surface of the wing roof 22 in such a manner as to be rotatable up and down is disposed inside the wing roof 22 at the center in the longitudinal direction. Hydraulic cylinder 26
Shaft 4 provided at the tip of piston rod 24
The two pairs are mounted so as to be rotatable in the same vertical direction as the rotation direction of the hydraulic cylinder 26, that is, the rotation direction of the wing roof 22 (the direction of arrow A in FIG. 3 and the direction of arrow A in FIG. 7). Have been.

Accordingly, the link member 30 is moved by the extension / retraction movement of the piston rod 24 by the hydraulic cylinder 26, in other words, with the expansion / contraction operation of the hydraulic cylinder 26.
The rotation position where the upward rotation of the link member 30 is prevented by the contact of the second stopper surface 40 with the inner surface of the wing roof 22, and the wing roof 22 of the first stopper surface 38
The rotation can be made up and down only in the range between the rotation position where the downward rotation of the link member 30 is prevented by the contact with the other part of the inner surface. As is apparent from this, in the present embodiment, one end of the hydraulic cylinder 26 is
It is connected to the wing roof 22.

Further, in such a link member 30,
At the other end in the length direction opposite to the mounting side of the bracket 34 with respect to the rotation shaft 36, the bracket 34 is directed toward the side of the center beam 18 when the bracket 34 is mounted on the inner surface of the wing roof 22 via the bracket 34. An engaging claw 44 as an engaging portion, which protrudes by a predetermined height, is integrally formed. This engaging claw 44
As can be seen from FIG. 4, the upper outer surface is flattened horizontally in a state in which the link member 30 is positioned at a rotational position where the first stopper surface 38 comes into contact with the inner surface of the wing roof 22. And the lower outer surface of the link member 30 wings the first stopper surface 40 from the rotational position at which the link member 30 abuts the second stopper surface 40 against the inner surface of the wing roof 22. In the turning direction in which the link member 30 is turned toward the turning position to be brought into contact with the inner surface of the roof 22, that is, in the direction in which the link member 30 is turned from the position indicated by the two-dot chain line to the position indicated by the solid line in FIG. The inclined cam surface 48 is inclined upward.

On the other hand, as shown in FIGS. 4 to 6, the lock device 32 has a stay 50 having a U-shaped cross section and an engaging member 52 having a frame shape as a whole. . The stay 50 is fixed to the mounting base 28 to which the hydraulic cylinder 26 is fixed, and the hydraulic cylinder 2
On the mounting plate 54 extending in the length direction of the device 6, two vertical walls 56, 56 for providing a U-shaped side portion are provided so as to be erected and fixed in position (see FIG. 3).

The engaging member 52 is provided between two relatively thin side plates 58, 58 disposed opposite each other, and one end in the length direction of the two side plates 58, 58. Further, an engaging rod 60 made of a round bar having a cylindrical outer peripheral surface, and a thin flat plate-shaped contact plate 62 provided between the other end portions of the two side plates 58, 58 in the longitudinal direction. And is configured. Note that this engaging member 5
2, the engaging rod 60, the contact plate 62 and the two side plates 5
8 and 58, the space formed inside them is sized to allow the engagement claws 44 of the link member 30 to enter, and the lower outer surface of the engagement rod 60 is described later. Thus, the engagement member side engagement surface 61 is engaged with the engagement claw 44 of the link member 30 protruding into the inner space.

The engaging member 52 is sandwiched between the two vertical walls 56, 56 of the stay 50, and is located on one side in the longitudinal direction of the two vertical walls 56, 56. It is attached at a longitudinally intermediate portion of the side plates 58, 58 to a rotation shaft 64 extending parallel to the center beam 18 and extending between them, so that the wing roof 22 is attached to the stay 50. And the same vertical direction as the rotation direction of the link member 30 (the direction of arrow A in FIG.
(In the direction of arrow A).

At the center of the bottom wall 66 of the stay 50 to which the engaging member 52 is attached, a contact projection 68 projecting upward at a predetermined height is integrally provided. When the contact plate 62 of the engaging member 52 rotatably attached to the stay 50 is brought into contact with the contact protrusion 68 on the side surface on the side of the center beam 18, the engaging member 52 is From the pivot position in which the two side plates 58, 58 are positioned to extend in the vertical direction,
The engagement member 52 is prevented from being rotated in the same direction as the downward rotation of the wing roof 22 and the link member 30.

Further, both end portions of the engaging member 52 in the length direction of the contact plate 62 (the direction facing the vertical walls 56, 56 of the stay 50) and the respective vertical walls 56,
And a tension coil spring 70 as an urging means.
However, each one is arranged. The tension coil springs 70 are moved by a predetermined amount so that a tensile force is applied to the contact plate 62 under the contact of the contact plate 62 of the engaging member 52 with the contact protrusion 68 of the stay 50. In the tensioned state, both end portions are engaged with the contact plate 62 of the engaging member 52 and the vertical walls 56 of the stay 50. As a result, the engaging member 52 is biased by the tensile force of the extension coil springs 70, 70 toward the rotation position at which the abutment plate 62 abuts against the abutment projection 68 of the stay 50. , Can be turned up and down.

In the wing body of the present embodiment as described above, as shown by the solid line in FIG. 4, the engaging member 52 is caused to stay on the contact plate 62 by the tensile force of the extension coil springs 70, 70. 50, the wing roof 22 is positioned at a rotation position where rotation in the same direction as the downward rotation direction of the wing roof 22 is prevented, and the link member 30 is connected to the hydraulic cylinder 26. The retracting operation of the piston rod 24 causes the first stopper surface 38 to abut against the inner surface of the wing roof 22 to prevent the wing roof 22 from rotating in the same direction as the downward rotating direction. When it is positioned at the position, the engaging claw 44 of the link member 30 is pushed into the inner space of the engaging member 52, and the engaging rod 60 of the engaging member 52 engages with the engaging member 60. 61 and the link member side engagement surface 46 of the engagement claw 44 of the link member 30 comes into contact with the vertical direction and adapted to be brought into engagement with each other. Further, by the engagement between the engaging member 52 and the link member 30, the upward rotation of the wing roof 22 is prevented, so that the opening operation of the wing roof 22 is prevented and the wing roof 22 can be locked. It has become.

Further, in such a wing body, as shown by the two-dot chain line in FIG.
Of the wing roof 22 on the inner surface of the wing roof 22 on the second stopper surface 40, which is different from the abutting portion of the first stopper surface 38. When the link member 30 is located at the rotation position where the rotation in the same direction is prevented, the engagement claw 44 of the link member 30 is disengaged from the inside space of the engagement member 52, and the engagement of the link member 30 is stopped. A link member-side engaging surface 46 of the dowel 44 and an engaging member 52 positioned at a rotation position where the downward rotation is prevented.
The engagement of the engagement rod 60 with the engagement member-side engagement surface 61 is released.
2 is allowed to rotate upward, so that the locked state for the opening operation of the wing roof 22 can be released.

That is, in the present embodiment, the first stopper surface 38 of the link member 30 abuts against the inner surface of the wing roof 22 due to the contraction operation of the hydraulic cylinder 26, so that the first stopper surface 38 is prevented from rotating downward. The rotated position of the rotated link member 30 is the first position where the engagement claw 44 as the engagement portion of the link member 30 is engaged with the engagement member 52 of the lock device 32, Hydraulic cylinder 2
6, the second stopper surface 40 of the link member 30 comes into contact with another portion of the inner surface of the wing roof 22, and the link member 30 is rotated to a position where the upward rotation is prevented. Rotation position of the link member 30
Is disengaged from the engaging claw 44 and the engaging member 52 of the lock device 32, and only in a range between such a first position and a second position, The rotation of the link member 30 by the expansion and contraction operation of the hydraulic cylinder 26 is performed.

The contact plate 62 abuts against the contact protrusion 68 of the stay 50 by the tensile force of the extension coil springs 70, 70, and the rotation in the same direction as the downward rotation is prevented. The pivoting position of the engaging member 52 rotated to the position is the engaging position of the engaging member 52 with respect to the link member 30, while the tension coil spring as shown by a two-dot chain line in FIG. The turning position of the engaging member 52 that has been turned upward by a predetermined amount against the pulling force of 70, 70 is the release position at which the engaging member 52 is disengaged from the link member 30. Accordingly, in a state where the engaging member 52 is urged by the extension coil springs 70 toward the engaging position with respect to the link member 30, the engaging position and the release position of the engagement are Because it can be rotated between That.

Accordingly, when the pair of wing roofs 22 and 22 in the fully closed state are opened in the wing body having such a structure, they are shown by a solid line and a two-dot chain line in FIG. As described above, first, the hydraulic cylinder 26 is extended by a hydraulic mechanism (not shown) to extend the piston rod 24 by a predetermined amount without rotating the hydraulic cylinder 26, thereby causing the link member 30 to The first stopper surface 38 is pivoted upward from a first position where it contacts the inner surface of the wing roof 22, and the second stopper surface 40 is
2 is located at a second position in contact with another portion of the inner surface. As a result, the engagement between the engagement claw 44 of the link member 30 and the engagement member 52 of the lock device 32 is released, and the lock of the wing roof 22 is released. Then, subsequently, the hydraulic cylinder 26 is extended and the piston rod 24 is further protruded, and the hydraulic cylinder 26 is pivoted upward around the pivot shaft 29, and the second link member 30 The wing roof 22 is opened by pushing up the wing roof 22 on the stopper surface 40 and rotating the wing roof 22 upward (in the direction of arrow A in FIG. 3).

When closing the wing roof 22 which has been opened and thus fully opened,
As shown in FIG. 7, first, the hydraulic cylinder 26 is contracted by a hydraulic mechanism (not shown), and the hydraulic cylinder 26 is rotated downward while the piston rod 24 is gradually retracted. The wing roof 22 is gradually rotated downward (in the direction of arrow A in FIG. 7) while the second stopper surface 40 is located at the second position where the second stopper surface 40 contacts the inner surface of the wing roof 22. Then, the wing roof 22 is closed.

After the wing roof 22 is completely closed as shown by the solid line and the two-dot chain line in FIG. 3, the piston rod 24 is further retracted by a predetermined amount to move the link member 30 to the second position. Is rotated downward from a second position where the stopper surface 40 contacts the inner surface of the wing roof 22, and the first stopper surface 38 is positioned at a first position where it contacts another portion of the inner surface of the wing roof 22. Then, the engaging claw 44 of the link member 30 is engaged with the engaging member 52 of the lock device 32. Thus,
When the closing operation of the wing roof 22 is completed, the wing roof 22 is completely closed, and at the same time, the opening of the wing roof 22 from the fully closed state is locked.

In the wing body of this embodiment, when the wing roof 22 is closed by the contraction operation of the hydraulic cylinder 26, the link member 30 is connected to the first wing roof 22 before the wing roof 22 is fully closed. When the wing roof 22 is fully closed, the engaging claw 44 of the link member 30 is securely It is adapted to be engaged.

That is, in such a wing body, the first stopper surface 38 comes into contact with another portion of the inner surface of the wing roof 22 during the closing of the wing roof 22 due to the contraction operation of the hydraulic cylinder 26. When the link member 30 is moved and positioned at the position shown in FIG. 8, just before the wing roof 22 is completely closed, the inclined cam formed by the lower outer surface of the engaging claw 44 of the link member 30 as shown in FIG. The surface 48 is brought into contact with the upper outer surface of the engagement member 52 of the locking device 32 which has the cylindrical shape of the engagement rod 60.

Further, from this state, the closing of the wing roof 22 is advanced as shown in FIG.
As the link member 30 is further moved downward, the inclined cam surface 48 of the link member 30 is slid on the upper outer surface of the engaging rod 60 of the engaging member 52, whereby the engaging member 52 is moved. The link member 30 is pressed, and is moved from the engagement position to the link member 30 to the release position against the tensile force (biasing force) of the tension coil springs 70, 70.

When the hydraulic cylinder 26 is further contracted and the wing roof 22 is completely closed, as shown by a solid line in FIG.
The wing roof 22 is positioned at the first position under the fully closed state, and is moved from the link member 30 to the engaging member 52.
The pressing force acting on the
Since the engagement member 30 is returned to the engagement position, the re-engagement between the link member 30 and the engagement member 52 is completed, and as a result, the opening of the wing roof 22 can be locked. is there.

As described above, in the wing body of the present embodiment, the special locking of the wing roof 22 is first performed with the continuous extension operation of the hydraulic cylinder 26 disposed inside the wing roof 22. The engagement between the link member 30 constituting the mechanism and the engaging member 52 of the lock device 32 is released, so that the opening operation of the wing roof 22 is unlocked, and subsequently, the wing roof 22 can be released. The wing roof 22 is closed with the continuous contraction operation of the hydraulic cylinder 26 under the fully opened state of the wing roof 22, and the wing roof 22 is completely closed. At the same time, the engagement between the link member 30 and the engagement member 52 of the lock device 32 is completed again, and the opening of the wing roof 22 is released again. Tsu it has become as to be click.

Therefore, in the wing body having the lock structure of the wing roof 22 as described above, a plurality of locking fittings are manually locked to a plurality of hook fittings one by one. A conventional wing body that employs only a lock mechanism 25 that locks and releases the wing roof 22 by manually releasing the engagement of the plurality of hooks and the plurality of locking fittings one by one. Unlike the above, the number of lock mechanisms 25 that require complicated operations for locking and unlocking the wing roof 22 is advantageously reduced or eliminated without deteriorating the reliability of the locked state of the wing roof 22. The locking and unlocking of the wing roof 22 is thereby mainly achieved by the continuous extension and retraction of the hydraulic cylinder 26. The dynamic operation is to be possible to be at once performed.

In such a wing body,
Since the engagement state between the link member 30 and the engagement member 52 of the lock device 32 is maintained while the hydraulic cylinder 26 is in the contracted state, a hydraulic mechanism that operates the hydraulic cylinder 26 allows the link member 30 to be engaged. And locking device 3
The locked state of the wing roof 22 under engagement with the second engagement member 52 can be more reliably and stably secured.

Therefore, in the wing body of the present embodiment as described above, unlike the conventional wing body, the unlocking and unlocking of the opening of the wing roof 22 can be performed easily and without any troublesome work. It can be performed quickly, and the locked state of the wing roof 22 can be maintained even more firmly by the hydraulic mechanism. And as a result of them,
Not only can the cargo handling work be further speeded up extremely advantageously, but, for example, when the truck rolls over due to an accident, the locked state of the wing roof 22 is released by the momentum, and the load can be moved out of the loading platform. Jumping out can be eliminated very effectively.

Further, in the wing body of the present embodiment, the link member 30 for locking the wing roof 22 by engagement with the engagement member 52 of the lock device 32 is provided between the first position and the second position. Between the first position and the second position, for example, when the link member 30 is moved between the first position and the second position. By being slid, unlike the case in which the engagement with the engagement member 52 and the release thereof are performed, the link member 30 is moved between the first position and the first position with a relatively small acting force. Not only can it be displaced between the two positions, but also the space for disposing the link member 30 can be advantageously reduced.

Further, in the wing body of the present embodiment, the first and second stopper surfaces 3
The engagement between the link member 30 and the lock device 32 is released only when the second stopper surface 40 is brought into contact with the inner surface of the wing roof 22 by the extension operation of the hydraulic cylinder 26. Then, the wing roof 22 is opened, and the hydraulic cylinder 26 is contracted from the opened state of the wing roof 22 to operate the wing roof 2.
When the second stopper 2 is completely closed, the first stopper surface 38 abuts on another portion of the inner surface of the wing roof 22, so that the link member 30 is securely located at the first position, and Since the engagement between the link member 30 and the lock device 32 is completed again, the automatic locking of the wing roof 22 and the automatic release of the locked state are accompanied by the automatic opening and closing operation of the wing roof. It can be performed more smoothly and reliably.

Further, in the wing body of this embodiment, the wing roof 22 of the link member 30 is provided.
An engaging claw 44 projecting with a predetermined height is integrally formed on a side surface on the side of the central beam 18 when attached to the inner surface, while an engaging member 52 of the lock device 32 has a frame-like overall shape. The engaging claw 44 of such a link member 30 is formed so as to protrude into an inner space formed in the frame shape of the engaging member 52, and the engaging claw 44 is provided on a link provided on an upper outer surface thereof. The member-side engaging surface 46 is engaged with an engaging member-side engaging surface 61 provided on a lower outer surface of an engaging rod 60 located above the frame-shaped engaging member 52. From there, the engaging rod 60 of the engaging member 52
And the engaging claw 44 of the link member 30 are securely engaged in the vertical direction, so that the upward rotation of the wing roof 22 in the engaged state with the lock device 32 can be more advantageously prevented. The opening of the wing roof can be locked even more securely.

In the wing body according to the present embodiment, the inclined cam surface 48 is provided on the outer surface below the engaging claw 44 of the link member 30 and the locking device 3 is provided.
The second engagement member 52 is reciprocally movable between an engagement position with respect to the link member 30 and a release position thereof, and during the closing of the wing roof 22, the link member 30 is moved to the first position. Even when the wing roof 22 is moved and positioned, the inclined cam surface 48 slides on the engaging rod 60 of the engaging member 52 immediately before the wing roof 22 is in the fully closed state. Since the reciprocating movement between the engagement position and the release position is performed so that the closing of the wing roof 22 is completed and the engagement between the link member 30 and the engagement member 52 is completed again, By simply closing the wing roof 22 completely, the opening of the wing roof 22 can be locked even more smoothly and reliably without performing any extra operation.

As described above, the present invention has been specifically clarified on the basis of the typical embodiments of the present invention. However, such embodiments are merely examples, and the present invention is not limited thereto. It goes without saying that the above description does not impose any restrictions.

For example, in the above-described embodiment, a plurality of well-known lock mechanisms 25 each including a hook and a lock having a conventional structure are provided on the outer surface of the side of the wing roof 22. May be omitted.
Even when the lock mechanism 25 is omitted, the link member 30 and the lock device 3 are provided inside the wing roof 22.
2, the locking structure of the wing roof 22 can be advantageously secured. If the known lock mechanism 25 provided outside the wing roof 22 is omitted, an advantage that the appearance of the wing body can be effectively improved can be obtained.

In the above embodiment, the hydraulic cylinder 2
One end of the piston rod 6 is rotatably and fixedly mounted with respect to the mounting base 28, while the tip of the piston rod 24 that is protruded / retracted by the hydraulic cylinder 26 is connected to the wing roof 22 via the link member 30. The connection structure is not limited to this, as long as the hydraulic cylinder 26 is connected to the wing roof 22 at one end. Therefore, for example, even if the tip of the piston rod 24 is provided rotatably and fixedly in position with respect to the mounting base 28 or the like, one end of the hydraulic cylinder 26 is connected to the wing roof 22 via the link member 30. It is good.

Further, the number of hydraulic cylinders 26 provided is
Wing roof 2 not shown in the above embodiment
The number of the link members 30 connected to the hydraulic cylinder 26 and the number of the lock devices 32 that engage with the link members 30 are also determined appropriately according to the size of 2, for example. , Can be variously changed in accordance with the number of hydraulic cylinders 26 provided, and the like.

Further, in the above-described embodiment, an engagement claw 46 projecting with a predetermined height is integrally formed on the side surface on the side of the center beam 18 when the link member 30 is attached to the inner surface of the wing roof 22. The engaging claw 46 forms an engaging portion that engages with the lock device 32. However, the arrangement position of the engaging portion is not particularly limited. 30 attached to the inner surface of the wing roof 22, on the side opposite to the side of the central beam 18,
It is also possible to protrude the engaging portion, or protrude the engaging portion on at least one of two side surfaces adjacent to the side surface on the side of the central beam 18. Needless to say, when the arrangement position of the engagement portion is changed, the arrangement position of the lock device 32 to be engaged with the engagement portion is also appropriately changed.

Further, the shape or structure of such an engaging portion is not limited to the one shown in the above-mentioned embodiment. The engaging portion may be formed in a shape such as a simple rod shape, and when an appropriate projection or the like is provided on the lock device 32, a concave shape or a hole (hole) engageable with the projection or the like.
It is also possible to form the engaging portion with the form. When adopting such a form as the engaging portion,
Preferably, an inclined surface having a function like the inclined cam surface 48 shown in the above-described embodiment is provided at a portion other than the engagement portion of the link member 30.

Further, the arrangement structure and the arrangement position of the first and second stopper surfaces 38, 40 provided on the link member 30 are not particularly limited to those shown in the above-described embodiment. Even if a suitable projection or the like is provided on the side surface or the upper end surface of the link member 30, and the first and second stopper surfaces are formed on the outer surface of the projection, there is no problem.

Further, as long as the structure of the lock device 32 can be engaged with the link member 30, any structure can be adopted as appropriate.

Further, in the above embodiment, the lock device 3
The tension coil springs 70, 70 are used as urging means for urging the second engaging member 52 toward the engaging position. Depending on the positional relationship with the release position, a compression coil spring can be used, and in addition to these tension coil springs and compression coil springs, known biasing means other than springs can be appropriately employed. is there.

Further, in the above embodiment, the link member 30 is rotated between the first position and the second position by being rotated in the same vertical direction as the rotation direction of the wing roof 22. However, if the link member can be realized, for example, the link member can be rotated in a direction different from the rotation direction of the wing roof 22 or the link member can be slid so that the first member can be moved. You may comprise so that it can be moved between a position and a 2nd position.

In the above embodiment, the center beam 18 extending straight in the front-rear direction is provided between the front wall 12 and the rear door frame 14 erected before and after the floor 10 at the center of the ceiling. A pair of wing roofs 22 are rotatably attached to the center beam 18 via a plurality of rotation shafts 20 formed on both left and right sides of the center beam 18, for example. , Without such a central beam 18 being provided, a pair of wing roofs 22
However, there is no problem even if the front and rear end portions are rotatably attached to the front wall 12 and the rear door frame 14, respectively.

In addition, in the above-described embodiment, the present invention relates to a wing body having a pair of wing roofs having an L-shaped cross section and covering an opening from a central beam to a lift in a ceiling portion and left and right side portions. Although an example of what is applied to the structure of the above is shown, the present invention is not provided with a center beam or a tilt, etc., and the left and right sides from the center of the ceiling portion between the front wall and the rear door frame. The structure of a wing body provided with a pair of wing roofs each having an L-shaped cross section, and the structure of a wing body provided with a pair of flat wing roofs covering a part or all of a ceiling portion. Wing body structure with only one wing roof with an L-shaped or flat plate cross section, and the wing roof is mounted at a position deviated in the width direction from the center of the ceiling Structure or the like of that wing body, for any conventionally known various wing body structure,
Of course, it can be applied advantageously.

In addition, although not enumerated one by one, the present invention
Based on the knowledge of those skilled in the art, various changes, modifications, improvements and the like can be performed in embodiments, and unless such embodiments depart from the spirit of the present invention.
Both are included in the scope of the present invention,
Needless to say.

[0067]

As is apparent from the above description, according to the wing body structure according to the present invention, the opening and unlocking of the wing roof can be easily performed without any troublesome work. Such a locked state of the wing roof can be more firmly maintained. As a result, not only can the cargo handling work be further speeded up extremely advantageously, for example,
When the truck rolls over due to an accident or the like, the locked state of the wing roof is released due to the momentum, and it is possible to effectively solve the situation where the loaded luggage jumps out of the loading platform. .

[Brief description of the drawings]

FIG. 1 is an explanatory front view of a wing body having a structure according to the present invention.

FIG. 2 is an explanatory plan view of the wing body shown in FIG. 1;

FIG. 3 is a partially enlarged cross-sectional explanatory view taken along the line III-III of FIG. 1;

FIG. 4 is an enlarged explanatory view of a main part in FIG. 3;

FIG. 5 is a partially enlarged cross-sectional explanatory view along a VV cross section in FIG. 3;

6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is an explanatory view showing an example of a use state of the wing body shown in FIG. 1, and shows a state in which the wing roof is fully opened.

FIG. 8 is an explanatory view showing another example of a use state of the wing body shown in FIG. 1, showing a state in which a link member is brought into contact with an engagement member of a lock device during closing of the wing roof. ing.

FIG. 9 is an explanatory view showing another example of a use state of the wing body shown in FIG. 1, wherein a link member is slid on an engagement member of a lock device while the wing roof is being closed; The state where the engagement member was moved to the release position is shown.

[Explanation of symbols]

12 Front wall 14 Rear door frame 20 Rotating shaft 22 Wing roof 26 Hydraulic cylinder 30 Link member 32 Lock device 38 First stopper surface 40 Second stopper surface 44 Engaging claw 46 Link member side engaging surface 48 Inclined cam surface 52 engaging member 60 engaging rod 61 engaging member side engaging surface 70 extension coil spring

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Makoto Kubota 9-9 Nakamaru, Fuji City, Shizuoka Prefecture F-term in Sagawa Auto Body Co., Ltd. (Reference) 2E052 AA09 DA05 DB05 EA01 EB01 EC02 FA01 LA02

Claims (5)

[Claims] 1. A wing roof that covers at least a part of a ceiling portion is rotatably mounted vertically between a front wall of a cargo bed and a rear door frame, and one end of a hydraulic cylinder is connected to the inside of the wing roof. Then, the wing roof is turned up and down by the expansion and contraction operation of the hydraulic cylinder, so that the wing roof can be opened and closed. A link member movable between the second position and the second position is attached, and the link member is provided with an engaging portion, and the engaging portion is engaged with the lock device by moving the link member to the first position. On the other hand, when the link member is moved to the second position, the engagement between the engaging portion of the link member and the lock device is released, and the extension operation of the hydraulic cylinder is performed. By moving the link member to the second position in this way, the engagement between the engaging portion of the link member and the locking device is released, and the wing roof is opened, while the hydraulic cylinder is The wing roof is closed by the contraction operation, and the link member is moved to the first position side. When the wing roof is completely closed, the engaging portion of the link member A wing body structure characterized in that engagement with the locking device is completed. 2. The hydraulic cylinder, wherein the link member is rotatable up and down, and is moved and positioned at the second position by being pivoted upward by an extension operation of the hydraulic cylinder. The wing body structure according to claim 1, wherein the wing body structure is configured to be moved and positioned at the first position by being pivoted downward by a contraction operation of the wing body. 3. A contraction operation of the hydraulic cylinder,
A first stopper surface that contacts the inner surface of the wing roof when the link member moves to the first position, and prevents further movement of the link member to the first position side; When the link member moves to the second position by the extension operation of the hydraulic cylinder, the link member comes into contact with another portion of the inner surface of the wing roof and moves to the second position side. The wing body structure according to claim 1 or 2, wherein a second stopper surface for preventing further movement of the link member is provided on the link member. 4. An engaging portion of the link member is constituted by an engaging claw projecting toward the side of the link member, while the locking device is provided by the engaging claw. The wing body structure according to any one of claims 1 to 3, further comprising an engaging member provided with an engaging surface that is brought into contact with and engaged with the upper outer surface of the wing body. 5. An inclined surface which is inclined upward in a moving direction of the link member from the second position to the first position on an outer surface of a lower portion of the engaging claw of the link member. When the engagement member of the lock device is urged by a predetermined urging means toward the engagement position at which the engagement surface engages with the engagement claw, the engagement position is engaged with the engagement position. When the wing roof is closed by the contraction operation of the hydraulic cylinder, the link member moved to the first position is positioned on the inclined surface. By being slid by the engagement member, the engagement member is moved to the release position side against the urging force of the urging means, and when the wing roof is completely closed. The engaging member is provided with the urging means. The wing body structure according to claim 4, wherein the wing body structure is configured to be returned to the engagement position by a force and to be engaged with an engagement claw of the link member.