JP2012020694A - Truck bed cover device of truck vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a cover body not to hinder a loading operation of a load when the cover body covering the load loaded on a truck bed and rotated to be opened and closed by a drive mechanism is opened, and to completely shield the load from a travel wind by the cover body.SOLUTION: A truck bed cover device includes: a cover body 1 turnably supported on side gate plates Tb of a truck bed Ta and covering the entire upper surface of a load loaded on a truck bed Ta with a two-divided structure of a division line in a front-rear direction of the truck bed Ta; and a drive mechanism 2 rotating and opening and closing the cover body 1. In the cover body 1, each half part of the two-divided structure is turned into a two-folded structure of a folding line in the front-rear direction of the truck bed Ta, and folded and stacked on an outer side surface of the side gate plate Tb when opened.

Description

  The present invention belongs to a technical field related to a cargo bed cover device that covers a load loaded on a cargo bed of a truck.

  Recently, the scattering of dust from a truck that transports earth and sand has become a social problem, and it has become a social requirement to provide the truck with a facility for blocking the sand and sand loaded on the loading platform from the traveling wind.

  In response to this social demand, for example, there is a facility for fixing a sheet placed on earth and sand loaded on a cargo bed to a base plate of the cargo bed with a rubber belt. Although this facility has the advantage that it can be provided at low cost and has versatility with respect to the size of a cargo truck bed, the seat and the rubber belt must be manually attached and detached, which is difficult to operate. For this reason, development of the technique which makes the operativity of the facility which interrupts the earth and sand loaded on the loading platform from driving | running | working wind favorable is requested | required.

  Conventionally, for example, the techniques described in Patent Documents 1 and 2 are known as techniques aimed at improving the operability of facilities for blocking earth and sand loaded on a cargo bed from traveling wind.

  In Patent Document 1, a cover body that is rotatably supported by a side plate of a cargo bed and covers the entire upper surface of the luggage loaded on the cargo bed with a split structure of two dividing lines in the front-rear direction of the cargo bed, A cargo carrier cover device having a drive mechanism that pivots and opens is described.

  In Patent Document 2, a thin plate-like cover body that is rotatably supported by side side plates of a cargo bed and covers an upper partial surface of a load loaded on the cargo bed, and a drive mechanism that pivots the cover body open and close A carrier cover device for a truck equipped with

    According to Patent Documents 1 and 2, the cargo carrier cover device according to Patent Documents 1 and 2 does not require manual attachment and detachment by rotating and opening a cover body permanently installed in the cargo vehicle with a drive mechanism. To improve operability.

JP 2000-177476 A JP 2009-29232 A

  In the cargo carrier cover device according to Patent Document 1, when the cover body is opened, it is raised in the vertical direction on the upper side of the side wall plate in a double-split manner and exists as an obstacle on the upper side of the cargo bed. For this reason, there is a problem in that the cover body interferes with the load loading operation. In the luggage carrier cover device for a freight vehicle according to Patent Document 1, the cover body is stacked on the outer side surface of the side wall plate when opened and does not exist as an obstacle on the upper side of the cargo bed, but the cover body is loaded on the luggage carrier. Since only the upper part of the cover is covered, there is a problem that the load cannot be completely blocked from the traveling wind.

  The present invention has been made in view of such problems, so that the cover body that covers the load loaded on the loading platform and is pivotally opened and closed by the drive mechanism does not interfere with the load loading operation when opened. In addition, an object of the present invention is to provide a cargo carrier cover device that can completely block a load from a traveling wind by a cover body.

  In order to solve the above-described problem, the cargo carrier cover device according to the present invention employs the means described in each of the claims.

  That is, according to the first aspect of the present invention, there is provided a cover body that covers the entire upper surface of the load that is pivotally supported on the side plate of the cargo bed and that is loaded on the cargo bed with a split structure of dividing lines in the longitudinal direction of the cargo bed, In the cargo carrier cargo bed cover device having a drive mechanism for rotating and opening and closing, the cover body has a half-folded structure in which the half part of the split structure is folded in a folding line in the front-rear direction of the cargo bed. It is characterized by being folded on the outer side.

  In this means, when the cover body is opened, it is folded and laminated on the outer side surface of the side wall plate, so that the upper side of the loading platform is largely opened in a state free of obstacles. In addition, since the cover body has a split structure and a folded structure, it is possible to cover the entire upper surface of the luggage that is extended when closed and loaded on the cargo bed.

  According to claim 2, in the cargo carrier cover device of claim 1, the half of the cover body is folded at the time of opening and extended at the time of closing by a link mechanism connected to the drive mechanism. It is characterized by that.

  In this means, the link mechanism is interposed between the cover body and the drive mechanism, thereby eliminating the need for a separate drive mechanism for folding and extending the half of the cover body having the two-fold structure.

  According to a third aspect of the present invention, in the cargo carrier cover device of the second aspect, the link mechanism includes a lock portion that locks the folded state and the extended state of the half of the cover body.

  In this means, since the link mechanism is provided with a lock portion that locks the folded state and the extended state of the half of the cover body, the folded state and the extended state of the half of the cover body may be unexpectedly released. Disappear.

  In the cargo carrier cover device according to the present invention, when the cover body is opened and folded on the outer side surface of the side wall plate, the upper side of the cargo bed is largely opened to an obstacle-free state. There is an effect that the cover body that covers the loaded luggage and is rotated and opened by the drive mechanism does not obstruct the loading work when the luggage is opened. In addition, since the cover body has a split structure and a double fold structure, it can cover the entire upper surface of the luggage that is extended when closed and loaded on the cargo bed. There is an effect that can be blocked.

  Furthermore, as a second aspect of the present invention, a link mechanism is interposed between the cover body and the drive mechanism, so that a separate drive mechanism for folding and extending the half of the cover body having the two-fold structure is not required. Therefore, there is an effect that the structure is simplified and the manufacturing cost is reduced.

  Further, as claimed in claim 3, the link mechanism is provided with a lock portion that locks the half-folded state and the extended state of the cover body, so that the half-folded state and the extended state of the cover body are unexpectedly released. Therefore, there is an effect that reliability in use is obtained and safety is ensured.

It is a perspective view which shows operation | movement of the form for implementing the carrier cover apparatus of the lorry which concerns on this invention. It is an enlarged view of the principal part of FIG. It is an enlarged view of the principal part of FIG. FIG. 4 is an enlarged longitudinal sectional view of FIG. 3, and (A) and (B) show different operating states. FIG. 3 is an enlarged side view showing the operation of FIG. 2. FIG. 6 is a state diagram of the operation in FIG. 5 (when the cover body is opened).

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the loading platform cover apparatus of the lorry vehicle which concerns on this invention is demonstrated based on drawing.

  In this embodiment, the one applied to a truck T composed of a dump truck is shown.

  As shown in FIG. 1, this embodiment includes a cover body 1, a drive mechanism 2, and a link mechanism 3.

  As shown in FIG. 1, the cover body 1 covers the entire upper surface of the load loaded on the loading platform Ta. The cover body 1 has a two-part splitting structure in the front-rear direction of the loading platform Ta. Is a double-folded structure of folding lines in the front-rear direction of the loading platform Ta. As shown in detail in FIG. 2, the half of the cover body 1 is rotatable to the outer portion 11 and the outer portion 11 that are rotatably supported by the side plate Tb that surrounds the side of the loading platform Ta. The inner part 12 is supported. Both the outer portion 11 and the inner portion 12 are formed in a flat plate shape by stretching sheets 11c and 12c on the angle shafts 11a and 12a with ropes 11b and 12b. A part of the angle shaft 11a of the outer portion 11 is extended in a direction orthogonal to the side hook Tb, and fixed to the upper end of the outer side face of the side hook Tb at the front end extending on the rear side of the loading platform Ta. A shaft portion 11 d that is rotatably supported by the bearing 4 is provided, and a distal end portion that extends on the front side of the loading platform Ta is fixed to a drive shaft 22 described later of the drive mechanism 2. A part of the angle shaft 12a of the inner side portion 12 is extended in a direction orthogonal to the side flange plate Tb (outer side portion 11), and the outer side portion 11 is provided at the front end portion extending on the front side and the rear side of the loading platform Ta. A bearing 12d fitted to an angle shaft 11a disposed in the front-rear direction of the loading platform Ta is fixed.

  As shown in detail in FIGS. 2 and 3, the drive mechanism 2 extends along the upper end of the outer surface of the side plate Tb to the drive motor 21 fixed to the front plate (Trey) Tc surrounding the front of the loading platform Ta. The drive shaft 22 arranged toward the cover body 1 is connected. The drive shaft 22 is rotatably supported by two bearings 5 and 6 that are fixed to the upper end portion of the outer side surface of the side wall plate Tb with a space therebetween.

  As shown in detail in FIGS. 2 to 4, the link mechanism 3 includes sprockets 31 and 32, a chain 33, a cover 34, and a lock portion 35. One sprocket 31 is fitted to the rear side of the loading platform Ta slightly so as to be free of rotation from a position where the angle shaft 11a of the outer portion 11 of the cover body 1 of the drive shaft 22 of the drive mechanism 2 is fixed. The other sprocket 32 is rotatably fitted to the angle shaft 11a of the outer portion 11 to which the bearing 12d on the front side of the loading platform Ta of the inner portion 12 of the cover body 1 is fitted, and is fixed to the bearing 12d. . The chain 33 is stretched between the sprockets 31 and 32 in an endless manner. The cover 34 is prevented from becoming inoperable due to adhesion of a load made of earth and sand loaded on the loading platform Ta surrounding the sprockets 31 and 32 and the chain 33. The lock portion 35 includes a lock claw 35a fixed to the sprocket 31 fitted to the drive shaft 22 of the drive mechanism 2, and the sprocket 31 (the bearing 5 that supports the drive shaft 22 of the drive mechanism 2 on the rear side of the loading platform Ta. It consists of a lock groove 35b formed in a portion facing the lock claw 35a). As shown in FIG. 4, the lock groove 35b on the fixed side is set so as to allow rotation of the lock claw 35a on the movable side by about 90 degrees.

  According to this embodiment, the drive mechanism 2 rotates the drive shaft 22 by about 270 degrees, so that the angle shaft 11a of the outer portion 11 of the cover body 1 is rotated by about 270 degrees. This rotation is the same as that of the cargo carrier cover device according to Patent Document 2, in which the angle shaft 11a of the outer portion 11 of the cover body 1 is stacked on the side wall plate Tb (open state) and the carrier Ta. This results in a conversion between the state of being horizontally disposed above (closed state).

  As shown in FIG. 5, the conversion between the open state and the closed state is performed within a range in which the sprockets 31 and 32 and the chain 33 are restricted from the structure of the sprockets 31 and 32, the chain 33, and the lock mechanism 35 of the link mechanism 3. Rotation and movement of the cover body 1 are permitted, and folding and extension of the angle shaft 11a of the outer portion 11 and the angle shaft 12a of the inner portion 12 which are half of the cover body 1 are brought about. Therefore, a separate drive mechanism for folding and extending the half of the cover body 1 having the double-fold structure is not required, the structure is simplified, and the manufacturing cost can be reduced.

  Further, when folding and extension are completed, the conversion of folding and extension is fixed by the engagement of the lock claw 35a and the lock groove 35b of the lock part 35 of the link mechanism 3 as shown by the solid lines in FIGS. The Therefore, since the folded state and the extended state of the half part of the cover body 1 are not unexpectedly released, reliability is obtained in terms of use and safety is ensured.

  When the form is opened, the cover body 1 is folded and laminated on the outer side surface of the side wall plate Tb, so that the upper side of the loading platform Ta is largely opened without any obstacles. The cover body 1 that is rotated and opened by the drive mechanism 2 does not interfere with the load loading operation.

  At the time of closing in this form, the cover body 1 has a split structure and a double fold structure, so that the entire upper surface of the luggage loaded and loaded on the loading platform Ta can be covered. It can be completely shielded from running wind.

  In addition, in this form, since both the half parts of the cover body 1 are each driven with the separate drive mechanism 2, one half part of the cover body 1 is raised to the middle and the loading platform Ta from the side. It can also be used as a weir when loading luggage onto the door.

  As described above, the cover body 1 can be made of a plate material in addition to the illustrated embodiment.

  Furthermore, the link mechanism 2 can be configured with a link arm, a gear, and the like.

  The cargo carrier cover device according to the present invention can be applied to loading of cargo other than earth and sand, and is particularly effective for loading of cargo made of particulate matter. In addition, trucks can be widely implemented from small cars to large cars.

DESCRIPTION OF SYMBOLS 1 Cover body 2 Drive mechanism 3 Link mechanism 35 Lock part T Lorry car Ta cargo bed Tb Side part side plate

Claims (3)

  A cover body that is pivotally supported on the side plate of the loading platform and covers the entire upper surface of the load loaded on the loading platform with a split structure of the dividing line in the front-rear direction of the loading platform, and a drive mechanism that rotates and opens the cover body In the carrier cover device for a truck, the half part of the split structure has a two-fold structure of the folding lines in the front-rear direction of the cargo bed, and is folded and laminated on the outer side surface of the side plate when opened. A cargo carrier carrier cover device characterized by the above.   2. The cargo carrier cover apparatus according to claim 1, wherein a half of the cover body is configured to be folded at the time of opening and extended at the time of closing by a link mechanism connected to the driving mechanism. Cargo bed cover device.   3. The cargo carrier cover device according to claim 2, wherein the link mechanism includes a lock portion that locks a folded state and an extended state of the half of the cover body.

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