JPH08127246A - Expandable awning device for load-carrying platform - Google Patents

Abstract

PURPOSE: To decrease the number of components projecting inward as small as possible by providing a horizontal guide part and a guide rail which extend longitudinally, for movably supporting the lower ends of awning support columns at each of side surfaces of a load-carrying platform, providing guide means for guiding adjacent support columns, relative to one another, and by coupling drive means to the rearmost support column. CONSTITUTION: Guide rails 38A each composed of a guide part, a main part 381 and a proximal end part 382 are laid on the upper surfaces of opposite side panels of a load-carrying platform, and inverted U-like awning support columns 40 are set at predetermined intervals so as to straddle between the guide rails 38A, and an awning is secured to the outside of the awning support columns 40 with the use of attaching means. Further, each of the awning support columns 40 is composed of vertical upper and lower parts, and a horizontal intermediate part 40C. The horizontal intermediate between adjacent awning support columns 40C are laid up and down, and are coupled together by means of guide support means 44 so as to be movable, relative to one another. The rearmost awning support column 40 is coupled to a drive means by means of a roller chain 49. Accordingly, the number of components projecting inward from the awning support poles 40 is reduced, thereby it is possible to enhance the workability for loading and unloading, and to effectively use the space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truck bed or a trailer bed, or a hood for covering a space on the bed of various container-like bed, and in particular, it is capable of expanding and contracting in a longitudinal direction of a truck or the like. The present invention relates to a telescopic hood device that is made possible.

[0002]

2. Description of the Related Art There are various lids for covering the space above the cargo bed of a truck, and one of them is a so-called hood. In this hood, a large number of inverted U-shaped stanchions are attached at intervals in the front-rear direction of a loading platform, and a sheet of cloth or the like is covered so as to cover the large number of hood stanchions.

By the way, generally, the hood on the truck bed is generally of a fixed type so that it can be opened and closed only on the rear side of the truck bed, but by utilizing the characteristics of the hood, it can be opened and closed in a so-called bellows shape. It is conceivable to use it as a hood. As shown in FIG. 30, the telescopic hood on the truck bed has an inverted U shape as a whole on the truck bed 2 of the truck 1.
A plurality of hood pillars 3 having a character shape are provided so as to be movable in the front-rear direction of the loading platform 2, and each hood pillar 3 is connected by a crossbar 4 in which a pair of arms 4A and 4B are combined in an X shape. The plurality of hood columns 3 and crossbars 4 are entirely covered by a hood 9. By moving the hood column 3 back and forth, the hood can be expanded and contracted and opened and closed by the so-called pantograph principle. With such an extendable hood, most of the space on the loading platform is opened when the hood is reduced, so that loading and unloading of articles on the loading platform becomes extremely easy.

[0004]

In the telescopic hood using the cross bar as described above, the cross bar must be provided inside the hood column in order to prevent the cross bar that opens and closes during expansion and contraction from interfering with the hood. is there. Therefore, the hood column is located on the inner surface side of the hood, and a pair of arms forming a crossbar is attached to the hood column inside via a support shaft (pin) or the like. In addition, the pair of arms that make up the crossbar are connected in a so-called pantograph shape via a spindle (pin) so that one is located on the outer surface side (side of the hood column) and the other is located on the inner surface side (inside the cargo bed). To be done. Therefore, in such a configuration, the arms forming the crossbar doubly project further inward from the hood column, and the support shaft pin for connection and the like also project inward. Therefore, when the load on the loading platform collapses, the load is caught on the protruding part such as the crossbar, and as a result, it becomes impossible to open (reduce) the telescopic hood smoothly. Or damage the load. On the contrary, when the telescopic hood is closed, a protrusion such as a crossbar may collide with a load and cause a load collapse. Therefore, it has been considered practically inappropriate to apply the above-described telescopic hood to a luggage carrier such as a truck.

On the other hand, in the telescopic hood using the cross bar as described above, the hood support part is composed of the hood support and the cross bar, and the total thickness of the part is as apparent from the above. Since the total thickness of the pair of arms that make up the crossbar is greater than the sum of the thickness of the hood column and the total thickness of the crossbar is considerable, the following is the case when actually applying it to a truck bed. Such problems arise.

That is, the telescopic hood on the truck bed is
Even when the hood is contracted, it has a certain width (to be precise, the width in the front-rear direction of the truck bed), so that when the telescopic hood is contracted, that is, when the hood is opened, a space as large as possible is opened on the bed. It is desirable that the extension hood be installed so that the extension hood is positioned in front of the loading platform when the extension hood is reduced. Fortunately, the width of the driver's seat side is generally smaller than the width of the loading platform in 4 ton trucks, etc. Therefore, when retracting the extension hood, the extension hood is pulled forward from the front end of the loading platform. It is thought possible to do. Of course, the telescopic hood is generally reduced only when loading and unloading luggage on the loading platform. There is little danger of hindering the descent or driving. However, in actuality, the difference between the width of the truck bed portion and the width of the portion in front of it is only a very small difference of about 100 mm or less, and therefore, in the telescopic hood using the crossbar as described above, Since the total thickness of the hood support part is thick, the thickness of the hood will be an obstacle to pulling the telescopic hood forward of the loading platform when it is contracted. Actually, the configuration is such that the telescopic hood when retracting is moved to the part in front of the loading platform. Was difficult.

Further, in the pantograph type telescopic hood using the cross bar as described above, the hood is opened / closed (expanded / contracted) due to the sliding friction resistance of the connecting portions of the arms of the cross bar.
Requires a large amount of force, especially at the start of expansion and contraction, and it was practically difficult to apply it to the bed of a large truck. In other words, in a pantograph-type telescopic hood, all the crossbars between the hood columns are rotated in a uniform manner to change the spacing between the hood columns to a uniform range, thereby expanding and contracting the hood. In this case, at the start of expansion and contraction, that is, at the time of starting, it is necessary to break the static friction resistance in all the connecting parts of all the crossbars at once, and therefore, it is inevitable that a large amount of force is required for starting, so practical application is difficult. It was said that.

The present invention has been made in view of the above circumstances, and the number of protrusions to the inside of the telescopic hood can be reduced as much as possible to cause a situation in which a load is caught by the protrusion. It is possible to reduce the total thickness of the hood support part of the telescopic hood compared to the case of the telescopic hood using the crossbar, and it does not require a large force at the time of expansion and contraction. It is an object of the present invention to provide an extendable hood for a loading platform such as a truck that can be started with a small force even at the start.

[0009]

In order to solve the above-mentioned problems, the telescopic hood device according to the invention of claim 1 has a front and rear portion of the luggage carrier between one side portion and the other side portion in the longitudinal direction of the luggage carrier. When viewed from the direction, a plurality of hood pillars, which are generally U-shaped as a whole, are bridged across the cargo bed at a predetermined interval in the front-rear direction, and a plurality of hood pillars are entirely covered with the hood pillars. In a telescopic hood device for a loading platform in which the hood can be extended and retracted by moving in the direction, horizontal guide portions are formed along the longitudinal direction of the loading platform at the portions on the side of the loading platform of each of the hood columns. Guide rails are provided on the side portions along the front-rear direction, and the lower ends of the hood columns are supported by the guide rails so as to be movable in the front-rear direction. Of the hood column A guide supporting means is provided on the id part so as to be relatively movable in the horizontal direction, and the bottom end of the bottom of the top cantilever at the rearmost end of each canopy strut is attached to the front and rear of the canopy. The driving means for moving in the direction is connected.

According to the invention of claim 1, "substantially reverse U
It goes without saying that the term "shape" includes a shape in which the open portion of the U-shape is directed downward.

According to the first aspect of the present invention, there is provided a telescopic hood device for a loading platform, wherein the lower ends of the hood columns are supported by guide rails provided on the sides of the loading platform such as trucks so as to be movable in the front-rear direction. Since the guide portion of one of the adjacent hood columns in the adjacent hood columns supports the other hood column so as to be relatively movable in the horizontal direction by the guide supporting means, the hood column located at the rearmost end is moved forward and backward by the driving means. By moving the tops to the front and rear, the tops can be contracted and extended (that is, opened and closed) by sequentially moving the tops and columns.

Here, the mutual relationship between the top columns is as follows.
Since the hood columns adjacent to each other are only connected by the guide support means, when the hood is extended or contracted, the hood columns on the rear end side are sequentially moved one by one, and therefore, when the extension or contraction is started. The force required is not so large, and the starting force is much smaller than in the case of the pantograph method in which all the hood columns are moved together.

Further, the total thickness of the hood support portion is only the total thickness of the hood column including the guide portion. That is, in the case of an extendable hood using a crossbar, the total thickness of the hood support portion is equal to or more than the total thickness of the hood support column and the thickness of a pair of arms forming the crossbar. Since the crossbar is not used, the total thickness of the hood support portion is smaller than that when the crossbar is used. Further, when the crossbar is used, it is necessary to provide the crossbar inside the hood column, but in the present invention, the guide portion and the guide supporting means do not have to be provided inside the hood column, and therefore the hood column is not used. The amount of protrusions to the inside can be reduced.

The telescopic hood device according to a second aspect of the present invention is the telescopic hood device according to the first aspect, in which the portion of the hood column on the side of the luggage carrier side is a vertical column upper portion and the luggage platform front and rear with respect to the column upper portion. A vertical column lower part located at a position displaced in the direction, and a horizontal column middle part along the front-rear direction of the cargo bed and connecting the lower end of the upper column of the column and the upper end of the lower column of the column. The guide portion is formed in the intermediate portion, and the guide supporting means is provided on one end side of the column intermediate portion.

In the telescopic hood device according to the second aspect of the present invention, the hood column has a bent shape including a vertical column upper portion, a horizontal column intermediate portion, and a vertical column lower portion, In this case, since the guide part is formed in the horizontal middle part of the column, the upper part of the column, the middle part of the column including the guide part, and the lower part of the column are positioned in the same vertical plane,
The overall thickness of the hood column can be significantly reduced.

On the other hand, the telescopic hood device according to a third aspect of the present invention is the telescopic hood device according to the first aspect, wherein a portion of the hood column on the side of the cargo bed side is a vertical column vertical portion and upper and lower portions of the column vertical portion. It is composed of a pillar horizontal extension part that extends horizontally from the intermediate position in the direction along the front-back direction of the loading platform,
The guide portion is formed on the horizontally extending portion of the column,
Further, the guide supporting means is provided at the tip end on the extension side of the horizontal portion of the column.

In the telescopic hood device according to the third aspect of the present invention, the portion of the hood column on the side of the loading platform is vertically extended by the column vertical portion from the upper end side to the lower end portion supported by the guide rail on the loading platform side. Since it is continuous and not particularly bent, it has sufficient strength.

According to a fourth aspect of the invention, in the telescopic hood device according to the third aspect of the invention, the base of the horizontally extending column of each of the hood columns is fixed to the outer surface of the loading platform with respect to the vertical column. That is, the tip end side portion of the column horizontal extension portion is located on the outer surface side of the cargo bed of the column horizontal portion of another adjacent hood column.

Further, the telescopic hood device according to a fifth aspect of the invention is the telescopic hood device according to the first aspect, in which the guide portions of each hood column are provided so as to be vertically positioned in the same vertical plane. Is.

According to a sixth aspect of the invention, in the telescopic hood device according to the first aspect, the guide supporting means is rotatably mounted on the hood support so as to roll along the guide portion. The extendable hood device according to the invention of claim 7 is the extendable hood device according to claim 1, wherein the wheel is rotatably attached to the lower end of each hood column. The wheels are capable of rolling along the guide rails.

In the telescopic hood device according to the sixth or seventh aspect of the invention, since the supporting portions are supported by the wheels, the frictional resistance of the supporting portions becomes rolling friction, and therefore the hood is extended and contracted ( The force required for opening and closing) is further reduced.

Further, the telescopic hood device of the invention of claim 8 is the telescopic hood device of claim 1, wherein the drive means is
A non-annular roller chain having a plurality of rollers connected to each other by a link and having an open end, and along a side portion of the cargo bed for sandwiching the roller chain and guiding the traveling of the roller chain. And a linear traveling guide provided in the vicinity of the base end of the traveling guide for engaging the rollers of the roller chain and moving the roller chain forward and backward. , A rotating means for rotating the sprocket in both forward and reverse directions, and a roller chain that abuts or opposes to a link of the roller chain that is engaged with the sprocket in the vicinity of the sprocket from the side close to the rotation center axis of the sprocket. An inner guide for guiding and engaging with the sprocket near the sprocket. An outer guide for guiding the roller chain by abutting or facing a link or roller of the roller chain from the side far from the rotation center axis of the sprocket, and in the inner guide and the outer guide. The end on the travel guide side is configured to be parallel to the extension line of the travel guide, and the lower end of the last hood column of the above hood columns is attached near the tip of the roller chain. There is something.

According to the eighth aspect of the invention, in the non-annular roller chain, a driving force is given by the rotation of the sprocket at the portion meshing with the sprocket.
A portion near the tip of the sprocket is guided by a horizontal traveling guide to be moved forward or backward. Therefore, the hood column (the last hood column of each hood column) attached near the tip of the roller chain is horizontally pushed and pulled, and the telescopic hood is expanded and contracted (opened and closed).

Here, in the vicinity of the sprocket, is the roller chain partly engaged with the sprocket and is inserted (pushed) into the entrance (proximal end) of the running guide near the position out of the engagement? Or it will be pulled out from the driving guide. In the vicinity of such a sprocket, the link part of the roller chain inside the roller chain (the side closer to the rotation center axis of the sprocket) is guided by the inner guide, and at the outside of the roller chain (the side farther from the rotation center axis of the sprocket). ) Is guided by the outer guide, and the traveling posture from the position meshing with the sprocket to the traveling guide entrance is regulated. That is, since the end portions of the inner guide and the outer guide on the travel guide side are parallel to the extension line of the travel guide, the sprocket from the rear side of the roller chain with respect to the roller chain during the pushing drive (the extension drive of the telescopic hood). When a driving force in the forward direction is given by the roller chain, the roller chain is correctly guided toward the traveling guide by the inner guide and the outer guide from a position where it should be separated from the sprocket, and is smoothly pushed into the traveling guide. Therefore, prevent the situation where the position where the roller chain separates from the sprocket lags behind the correct position and the roller chain bends between the sprocket and the running guide, or the sprocket lifts from the roller chain. You can

According to a ninth aspect of the present invention, in the telescopic hood device of the eighth aspect, the guide rail and the traveling guide are integrally made of aluminum extruded profile. The extruded aluminum profile is provided on the side of the luggage carrier.

In the telescopic hood device according to the ninth aspect of the invention, since the guide rail and the traveling guide are integrated by the aluminum extruded shape member, the manufacturing cost and the assembly cost of each member are reduced.

[0027]

1 and 2 schematically show an expandable hood device according to an embodiment of the present invention mounted on a truck bed, in a state in which a hood is extended, and FIG. 3 also shows a truck bed. FIG. 4 schematically shows the telescopic hood device of one embodiment attached to the hood in a state when the hood is contracted, and FIG. 4 shows the structure of the hood column used in the above embodiment.

In FIGS. 1 and 2, the truck 30 has a driver's seat portion 32 provided at the front portion thereof and a loading platform 34 provided at the rear portion thereof. An extendable hood device 36 according to an embodiment of the present invention is provided on the cargo bed 34.
A front end frame 35 made of a frame generally called "torii" is provided at the front end of the loading platform 34.

To describe the telescopic hood device 36 in more detail, the side plates (so-called tilt plates that can be tilted about 180 °) 34A and 34B of the cargo bed 34 are provided on the upper surfaces thereof in the lengthwise direction (front and rear direction of the cargo bed). Along the horizontal main rails 38A and 38B, main portions 381 are provided, and at the front fixed portions of the side plates 34A and 34B, proximal end portions 382 of the guide rails 38A and 38B are provided. That is, the guide rails 38A and 38B are each in a straight line shape as a whole, but the base end portion 382 at the left end (front end) of FIG.
1 and the former base end portion 382 is separated from the side plate 3
4A and 34B, and the latter main portion 381 is provided at the upper ends of the side plates 34A and 34B. Further, the plurality of hood columns 40, which are substantially U-shaped when viewed from the front-rear direction of the loading platform 34, are provided with the left and right side plates 34A, 34 of the loading platform 34.
The guide rails 38A and 38B on B (between the guide rail main portions 381) are bridged in an upright state, and the plurality of hood struts 40 are arranged at a predetermined interval in the front-rear direction of the cargo bed 34, A hood 42 made of canvas or the like is covered so as to cover the outside of the hood column 40. A hood 42 is attached to the top of each hood column 40 by an appropriate attachment means.

As shown in FIG. 4, a vertical column upper portion 40A is formed on a portion of each of the top columns 40 on the side surface side of the truck 30 (that is, a portion on the guide rails 38A and 38B).
And a vertically lower column 40B and an upper column 40 of the column
It is configured by a horizontal pillar middle portion 40C connecting between the lower end of A and the upper end of the pillar lower portion 40B. Here, the pillar middle portion 40C has side plates 34A,
It is parallel to the length direction of 4B (the front-back direction of the loading platform 34).

In each of the hood columns 40, a hood column 40 'located at the final end side and a hood column 4 located at the foremost end side.
0 ″ is also configured to have the above-described lower column 40B, intermediate column 40C, and upper column 40A of the column in principle, but the specific configuration is slightly different from the other hood columns 40. The hood strut 40 ′ located at the position of the hood strut 40 ′ has a long rectangular frame 41 as viewed from the side, and the strut intermediate portion 40 </ b> C described above.
Is made to project, and the strut upper portion 40A is raised from the tip of the strut intermediate portion 40C, and a part of the frame body 41 corresponds to the strut lower portion 40B. On the other hand, the hood strut 40 ″ located on the frontmost end side extends the lower end of the portion corresponding to the strut upper portion 40A downward by the extension portion 43A,
The lower end of the extension 43A and the lower end of the column lower portion 40B are connected by a connecting piece 43B. Therefore, the column middle portion 40C, the extension portion 43A, the column lower portion 40
B and the connecting piece 43B form a rectangular frame-shaped portion.

The lower ends of the column lower portions 40B of the hood columns 40 (including hood columns 40 'and 40 ") are supported by guide rails 38A and 38B so as to be slidable in the front-rear direction, as will be described later. On the other hand, the middle part 40C
Is placed on the upper surface of the column intermediate portion 40C of another adjacent hood column 40, and the column intermediate portions 40C, 40C.
They are connected to each other by a guide support means 44 described later so as to be relatively movable in the horizontal direction.

Each hood strut 40 (40 ″) has another hood strut 40 adjacent to the hood strut 40 (40 ″).
Even if (40 ') is maximally separated, the pillar middle portion 40C of another hood pillar 40 (40') must be placed on the pillar middle portion 40C (that is, not to be separated and separated). A stopper (not shown in FIGS. 1 to 4 but described later) is formed.

Further, among the top hood columns 40, the lower end on the rear end side of the top hood column 40 'located at the rearmost end is a roller as a driving means for moving the hood column 40' in the front-rear direction, as will be described later. A chain 49 is connected to the tip part.

In the above-described telescopic hood device, if the roller chain 49 as a driving means is pushed and pulled in the front-rear direction (this roller chain 49 will be linearly guided will be described later), the rearmost end. Hood column 40 'moves back and forth, and the other hood column 40 (40 ") moves accordingly.
Also sequentially moves back and forth to expand and contract the hood 42. That is, the telescopic hood device is opened and closed. For example, when the roller chain 49 is moved backward to the left in the figure from the state in which the telescopic hood is extended as shown in FIG. 1, first, the hood column 40 'on the rearmost end side is moved (moved forward) to the left. Start. At this time, the rearmost hood strut 40 'is guided by the guide connecting means between the strut intermediate portions 40C while the strut intermediate portion 40C rests on the strut intermediate portion 40C of the other front hood strut 40 in front of it. While
Moreover, the lower ends of the hood columns 40 'have guide rails 38A, 38
While being guided by B, it moves forward. Then, if the last hood strut 40 'comes into contact with another hood strut 40 in front, the hood strut 40 is pushed forward, and thereafter, each hood strut 40 is sequentially pushed forward to move in the same manner. Finally, as shown in FIG. 3, all the hood columns 40 (40 ′, 40 ″) are brought to the front of the loading platform 34 and the telescopic hood is reduced to the maximum extent, that is, the space on the loading platform 34 is opened. It will be in a state of being.

Here, in the most reduced state, all the hood columns 40 (40 ', 4) are provided in front of the loading platform 34 as described above.
0 ″) is brought closer to be supported by the guide rail base end portion 382 in front of the loading platform 34, the side plates 34A and 34B of the loading platform 34 can be tilted.

On the other hand, when the roller chain 49 is moved to the right in the drawing from the state in which the telescopic hood is contracted as shown in FIG. 3, first, the rearmost hood column 40 'starts moving rearward. When the last hood strut 40 'reaches the position of the maximum separation distance from the other hood strut 40 that is adjacent to the front of the other hood strut 40', the other hood strut 40 is functioned by the above-mentioned stopper function.
Is pulled to start moving forward, and each hood strut 40 (40 ″) is sequentially withdrawn in the same manner, and finally returns to the extended state as shown in FIG.

Here, each hood strut 40 (40 ', 40 ")
Even when they move backward and are separated from each other,
As is clear from FIG. 4, a pillar middle portion 40C and a pillar lower portion 40B of a hood pillar 40 (a), a pillar lower portion 40B of another adjacent hood pillar 40 (b), and a guide rail 38A.
(38B) always forms a parallelogram, and since the pillar middle portion 40C and the pillar lower portion 40B of the hood pillar 40 (a) maintain a right angle with rigidity, the above-mentioned parallelogram is a right-angled quadrilateral. Since the hood column 40 is maintained in the shape (rectangular shape), each hood column 40 can always maintain a vertically upright state.

FIGS. 5 and 6 show specific examples of the lower part 40B of the hood and the guide rails 38A (38B) in each hood column 40. As shown in FIG. The guide rails 38A (38B) are fixed to the upper surfaces of the side plates 34A (34B) of the loading platform 34 by bolts (not shown) or the like as described above. Guide portions 48A and 48B that project in a plate shape toward both sides in the thickness direction are formed on the upper portion of the guide rail 38A (38B), and projecting ridge portions 48C are formed on the upper surface.
The lower surface side of 48B is a groove portion 48 drawn in from both sides in the thickness direction.
D and 48E. Further, the concave groove portions 48D, 4
A portion below 8E is a running guide 48F in which both ends of a U-shape when viewed in a cross section orthogonal to the thickness direction are bent in directions toward each other.

The running guide 48F is a part for guiding the horizontal running of the roller chain 49 by sandwiching the part of the roller 49A in the roller chain 49 for pushing and pulling the hood strut 40 'on the rearmost end side above and below. And has a lower guide portion 48Fa for receiving the lower side of the roller 49A and an upper guide portion 48Fb facing the upper side of the roller 49A,
Further, the lower guide portion 48Fa and the upper guide portion 48Fb are continuously integrated on the side of the roller chain 49.

On the other hand, the lower column 40B of each hood column 40
A pair of parallel extending pieces 50A, 50B extending downward are fixed on both sides in the thickness direction of the lower ends of the lower ends of the lower ends of the lower ends of the lower ends of the lower ends of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of each of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end. Side wheels 50C and 50D are attached, and above these lower wheels 50C and 50D,
The upper wheel 50E is rotatably attached. A groove 50F continuous in the circumferential direction is formed at the center of the outer peripheral surface of the upper wheel 50E. The outer peripheral surface of the upper wheel 50E contacts the upper surface of the guide rail 38A (38B) (the upper surface of the guide portions 48A, 48B) by the weight of the hood column 40, and the guide rail is in the groove 50F of the upper wheel 50E. The ridge portion 48C on the upper surface of 38A (38B) is located. The lower wheels 50C and 50D are located in the groove portions 48D and 48E of the guide rail 38A (38B). The lower wheels 50C, 50D and the lower surfaces of the guide portions 48A, 48B of the guide rails 38A (38B) are set to have a slight gap.

In the structure shown in FIGS. 5 and 6 as described above, the upper wheel 50E rolls on the upper surfaces of the guide portions 48A and 48B of the guide rail 38A (38B) when the hood column 40 moves. The bottom wheels 50C and 50D and the lower surfaces of the guide portions 48A and 48B prevent the hood column 40 from being separated upward, and at the same time, the upper wheels 5A and 5B.
0E concave groove 50F and guide rail 38A (38B)
The ridge portion 48C prevents the hood column 40 from shifting laterally. The recessed groove 50F may be formed on the upper surface of the guide rail 38A (38B) opposite to the side of FIGS. 5 and 6, and the protruding portion 48C may be formed on the outer peripheral surface of the upper wheel 50E. Further, in the example of FIGS. 5 and 6, the lower wheels 50C, 50
Although one pair is provided as D, only one of the lower wheels may be provided.

The upper wheel 50E and the lower wheel 50, which are similar to the above, are also provided at the lower ends of the column lower portion 40B and the extension portion 43A of the hood column 40 ″ on the frontmost end side, although not particularly shown.
C and 50D are provided (however, only one lower wheel may be provided), and guide rails 38A (38
It is slidably connected to B). Where the extension 43
In the case of A, the column lower portion 40B in FIGS. 5 and 6 is replaced with the extension portion 43A. Further, the upper wheel 50E and the lower wheels 50C and 50D similar to the above are provided at the lower end of the column lower portion 40B of the hood column 40 'on the rearmost end side (however, the lower wheel is 1
The guide rail 38A is also provided.
(38B) is movably connected in the horizontal direction. Here, the rear end lower end of the frame body 41 of the top end support 40 'on the rearmost end is also provided with upper wheels 50E and lower wheels 50C, 50D, and is slidably connected to the guide rails 38A (38B). The points are the same as those in FIGS. 5 and 6, but
It is slightly different from FIGS. 5 and 6 in that it is connected to a roller chain 49 as a driving means for pushing and pulling the rearmost hood column 40 '. Therefore, the structure of that portion is shown in FIGS.

In FIG. 7 and FIG. 8, the hood column 4 on the rearmost end side is shown.
Extension pieces 50A and 50B extending downward similarly to the above are fixed to the lower end on the rear end side of the frame body 41 at 0 '.
An upper wheel 50E and a lower wheel 50C, 50D are provided between the extending pieces 50A, 50B, and a tip end portion of one extending piece 50A is extended from a link 49B at an end of the roller chain 49. The extended portion 49D is attached via a mounting pin 49C or the like.

Therefore, in the configuration of FIGS. 7 and 8,
When the roller chain 49 is guided by the traveling guide 48F and is pushed and pulled (moved back and forth in the horizontal direction), the hood column 40 'connected to the link 49B at the tip end thereof moves back and forth.

FIGS. 9 and 10 show adjacent hood columns 40.
The specific structure of the connecting portion between the pillar middle portions 40C in the top end hood pillars 40 'and 40 "(including the rearmost and frontmost hood pillars 40', 40"), that is, the specific structure of the guide support means 44. This portion is basically shown. Is similar to the connecting portion between the lower column 40B of each hood column 40 and the guide rails 38A (38B).

That is, the column middle portion 40C of each hood column 40
Has a cross-section in the thickness direction formed in a shape in which the letter H is laid down sideways (in other words, an I-shape), and guide portions 54A and 54B projecting plate-like in the thickness direction are provided on the upper portion thereof. The protrusions 54C are formed on the upper surfaces of the guides 54A, 54B, and the lower surfaces of the guides 54A, 54B are recessed grooves 54D, 54E drawn in from both sides in the thickness direction.

On the other hand, the upper column 40A of each hood column 40
A pair of parallel extending pieces 56A and 56B extending downward are fixed to both sides in the thickness direction of the lower end of each of the extending pieces 56A and 56B. Side wheels 56C and 56D are attached, and the upper parts of these lower wheels 56C and 56D are
The upper wheel 56E is rotatably attached. A concave groove 56F continuous in the circumferential direction is formed at the center of the outer peripheral surface of the upper wheel 56E. The outer peripheral surface of the upper wheel 56E is the upper surface of the pillar intermediate portion 40C (the guide portion 54).
The hood strut 40 is brought into contact with the upper surface of the upper rim A, 54B by its own weight, and the ridge portion 54C on the upper surface of the strut intermediate portion 40C is positioned in the groove 56F of the upper wheel 56E. Further, the lower wheels 56C, 56D are provided with the concave groove portions 54D,
It is located within 54E. This lower wheel 56C, 5
6D and the lower surfaces of the guide portions 54A and 54B of the middle column 40C of the support column are positioned such that a slight gap is formed between them.

In the structure shown in FIGS. 9 and 10 as described above, the upper wheel 5 is moved when the hood column 40 (40 ') is moved.
6E is the upper surface of guide post intermediate portion 40C (guide portions 54A, 54A
B), but at this time the lower wheels 56C, 5
6D and the lower surfaces of the guide portions 54A and 54B prevent the upper hood strut 40 (40 ') from coming off upward, and at the same time, the groove 56F of the upper wheel 56E and the ridge 54C of the strut intermediate portion 40C. This prevents the hood column 40 from shifting laterally. The recessed groove 56F may be formed on the upper surface of the column middle portion 40C, which is opposite to the side shown in FIGS. 9 and 10, and the ridge 54C may be formed on the outer peripheral surface of the upper wheel 56E. In the example of FIGS. 9 and 10, the lower wheels 56C,
Although a pair of 56D is provided, only one of the lower wheels may be provided.

Note that, in FIG. 9, the lower column middle portion 40.
At the end of C, there is a side wall 40Ba at the upper end of the column lower part 40B, and this side wall 40Ba functions as the stopper described above.

FIG. 11 shows an example of the structure of the drive means when a roller chain 49 is used as the drive means in the telescopic hood opening / closing device of the present invention, and FIG. 12 and FIG. Show.

The roller chain 49 comprises a large number of rollers 49A.
Are connected by links 49B, and the links 49 adjacent to each other at the position of each roller 49A.
B and 49B are rotatable with respect to each other, and the roller chain 49 is bendable as a whole. Each link 49B is a pair of parallel link pieces 49B.
The roller 49A is located between a pair of parallel link pieces 49Ba, 49Bb. And the link piece 4 at the tip of the roller chain 49
As described above, the lower end of the rearmost hood column 40 'is attached to 9Ba'.

A sprocket 66 is rotatably arranged in front of the traveling guide 48F so that its shaft 66A is horizontal, and the shaft 66A of the sprocket 66 is directly connected to a rotary drive source such as a motor (not shown). Alternatively, it is connected via a rotation transmission mechanism (not shown) or is connected to a manual rotation mechanism so that it can be rotated in both forward and reverse directions. Here, the sprocket 66
Are actually provided on the left and right sides of the cargo bed 34,
Also, the pair of left and right sprockets 66 has a common shaft 6
6A, and its shaft 66A penetrates left and right on the front end side of the loading platform 34 as shown in FIG.
On the outer circumference of each sprocket 66, the roller chain 49 is hung on a portion (upper left portion) of about 1/4 of the entire circumference. Here, the teeth 6 of the sprocket 66 are
6B is a roller 49A inside the pair of link pieces 49Ba and 49Bb of the link 49B of the roller chain 49.
Mesh with. On the other hand, below the sprocket 66, a storage box 67 having an open upper surface is arranged. This storage box 67 is a roller chain 4 suspended from the sprocket 66.
It is for accommodating the part of the base end side of 9 folded in a zigzag shape.

On the other hand, the traveling guide 48F has the guide rails 38A (38) as described above with reference to FIGS.
B), that is, integrated with the guide rail main portion 381 and the guide rail base end portion 382. here,
It is desirable that the member in which the traveling guide 48F and the guide rail main portion 381 are integrated and the member in which the traveling guide 48F and the guide rail base end portion 382 are integrated are made of an aluminum extruded shape member. The positional relationship between the traveling guide 48F and the sprocket 66 is determined so that the inlet portion (proximal end portion) 48Fc of the traveling guide 48F is located at the horizontally extended position of the outer peripheral upper portion (top position) of the sprocket 66.

On the other hand, the roller chain 49 is the sprocket 6
6, an inner guide 74 for guiding the roller chain 49 by coming into contact with the link 49B of the roller chain 49 from the inside (that is, from the side close to the rotation center axis of the sprocket 66) near the portion meshing with the roller chain 49;
Link 49B from outside (ie sprocket 66
And an outer guide 76 for guiding the roller chain 49 by abutting on the rotation center axis of the roller chain. The inner guide 74 is composed of a pair of parallel inner guide pieces 74A and 74B. These inner guide pieces 74A and 74B are a pair of parallel links 49B of the roller chain 49 meshed with the sprocket 66. Of the teeth 66B of the sprocket 66 is curved with a radius of curvature substantially the same as the radius of curvature of the inner diameter of the teeth 66B of the sprocket 66 so as to individually contact the link pieces 49Ba and 49Bb of the sprocket 66 from the inside. Curved portion 74a,
A horizontal extension 74b that horizontally extends from a position corresponding to the apex of the outer periphery of the sprocket 66 along the tangential direction thereof toward the base end (entrance) 48Fc of the traveling guide 48F.
And are continuously formed integrally. The outer guide 76 is made of, for example, a member having a rectangular cross section, and the outer guide 76 simultaneously applies to the pair of parallel link pieces 49Ba and 49Bb of the link 49B of the roller chain 49 which meshes with the sprocket 66 from the outside. Approximately 1/4 turn of sprocket 66 (upper left part)
A curved portion 76a curved with a radius of curvature slightly larger than the radius of curvature of the outer diameter of the tooth 66B of the sprocket 66 along
A base end portion (entrance portion) 4 of the traveling guide 48F along a tangential direction from a position corresponding to the outer peripheral top of the sprocket 66 4
The horizontal extension portion 76b extending horizontally toward 8Fc is integrally formed. The distance between the front end surface of the inner guide 74 and the base end surface (entrance surface) of the traveling guide 48F (accurately, the distance in the traveling guide length direction when viewed from the side surface as shown in FIG. 12) W1 Is preferably as small as possible, and at least the roller chain 49
It is desirable that the distance is smaller than the center-to-center distance L1 between the adjacent rollers 49A. Further, the distance between the tip end surface of the outer guide 76 and the base end surface (entrance surface) of the travel guide 48F (correctly, the distance in the travel guide length direction when viewed from the side surface side as shown in FIG. 12) W2 Is also preferably as small as possible, and this is also preferably smaller than the center-to-center distance L1 of the rollers 49A of the roller chain 49.

When the push-pull driving device as described above is used to push-pull drive the hood column 40 'at the rearmost end of the telescopic hood, as shown in FIGS. 11 and 12, a part of the roller chain 49 is sprockets. Part of the outer circumference of 66 (about 1 / upper left)
The sprocket 66 is rotated clockwise in FIGS. 11 and 12 by a rotary drive source (not shown) in a state where the sprocket 66 meshes with the teeth 66B of the four circumferences). This allows the roller chain 49
Is taken out from the storage box 67 and moved from the lower left to the right in FIGS. 11 and 12. At this time, in each link 49B of the roller chain 49, the curved portion 74a of the inner guide 74 and the curved portion 76a of the outer guide 76 are provided in the portion that should be normally meshed with the sprocket 66 (upper left 1/4 circumference portion). Since the roller chains 49 face each other or face each other, the curved portions 74a and 76a of the inner guide 74 and the outer guide 76 allow the roller chain 49 to move as shown in FIGS.
The curve running while being engaged with the sprocket 66 is guided from the lower left of the to the top position of the sprocket 66. Therefore, the roller chain 49 is prevented from coming off the sprocket 66. Then, the roller chain 49 is guided by the horizontally extending portion 74b of the inner guide 74 and the horizontally extending portion 76b of the outer guide 76 so as to move horizontally to the right from the sprocket top position toward the running guide 48F. . That is, in the portion meshed with the sprocket 66, a clockwise traveling driving force is applied to the roller chain 49. In particular, the presence of the horizontally extending portion 74b of the inner guide 74 causes the roller chain 49 to move to the sprocket 66. The sprocket 66 is prevented from circling from the apex of the outer periphery of the sprocket 66 to the lower right while being meshed, and the roller chain 49 is forcibly disengaged from the apex of the outer periphery of the sprocket 66 in the horizontal direction. Then, subsequently, the horizontal extending portion 74b of the inner guide 74 and the horizontal extending portion 76b of the outer guide 76 are continuously formed.
The roller chain 49 is correctly guided by and
It is horizontally guided toward the base end portion (entrance portion) 48Fc of F. Therefore, the roller chain 49 is attached to the sprocket 66.
It is possible to prevent the roller chain 49 from being linearly pushed into the traveling guide 48F while preventing the downward bending or the upward disengagement while engaging with the sprocket 66 between the top position of the roller and the traveling guide 48F. Get caught

5 to 8 in the traveling guide 48F.
As shown in, the lower guide portion 48Fa and the upper guide portion 48Fb are in contact with or face the roller 49A of the roller chain 49, so that the traveling in the horizontal direction is guided. Further, in this traveling guide 48F, the roller chain 49
Parallel pair of link pieces 49Ba, 49B
Lower guide 48Fa, upper guide 48 to the inside of b
Since Fb projects, the roller chain 49 is also prevented from coming off laterally.

The link piece 49Ba 'at the tip of the roller chain 49 is already attached with the hood support post 40' at the rearmost end of the extendable hood as shown in FIGS. Roller chain 49 travel guide 48
By guiding and traveling to the right in the horizontal direction by F, the hood column 40 'is linearly moved (moved forward) to the right,
The extension hood can be extended (closed).

On the other hand, when the sprocket 66 is rotationally driven in the counterclockwise direction in FIGS. 11 and 12, the roller chain 49 is linearly moved leftward while being guided by the traveling guide 48F and the traveling guides 48F are sequentially guided, contrary to the above. It is pulled out from the sprocket 66 and hangs downward from the sprocket 66, and
It is stored in 7 in a zigzag shape. Along with the linear movement (retraction) of the roller chain 49 to the left, the hood column 40 ′ attached to the tip of the roller chain 49.
Will move to the left and the telescopic hood will be reduced (opened).

Here, since the pair of sprockets 66 on both sides of the cargo bed 34 are connected by the common shaft 66A as described above, the pair of left and right roller chains 49 meshed with the respective sprockets 66 are also advanced and retracted at the same time. Therefore, the left and right side portions of each hood column 40 (40 ', 40 ") are also driven forward and backward in parallel.

Further, in the above embodiments, the outer guide 7
6 is configured to abut or face the portion of the link 49B of the roller chain 49 (the end surfaces of the link pieces 49Ba, 49Bb).
The roller chain 49 may be guided by contacting or facing the portion of the roller 49A of the roller 9. In this case as well, it is desirable that the outer guide 76 has a structure in which the curved portion and the horizontal extending portion are integrally continuous.

14 to 25 show a telescopic hood device according to a second embodiment of the present invention. Note that in this second embodiment,
The same elements as those in the first embodiment shown in FIGS. 1 to 13 are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 14 shows the structure of FIG. 1 for the first embodiment.
Corresponding to the above, the overall structure in which the telescopic hood is extended and the hood 42 is closed is shown schematically (however, the hood 42 itself is shown by an imaginary line), and in FIG. 16 is a schematic view showing the entire configuration with the open state, and FIG.
Shows one hood column.

As in the case of the first embodiment, each of the hood columns 40 is made to have a substantially inverted U-shape when viewed from the front-rear direction of the luggage carrier, and on the left and right side plates 34A, 34B of the luggage carrier. The guide rails 38A and 38B are erected in an upright state. Each hood column 40 includes a hood column 40 ′ located on the rearmost end side of the loading platform and a hood column 40 ″ located on the frontmost end side.
Except for the parts on the side of the bed (that is, the guide rail 3
8A, 38B) is a vertical pillar vertical portion 40D
And a horizontally extending portion 40E fixed to the outer surface side of the loading platform of the vertical column 40D. The lengthwise direction of the horizontally extending portion 40E is parallel to the lengthwise direction of the side plates 34A and 34B, that is, the front-back direction of the luggage carrier.
Note that the hood 42 is placed over the entire hood columns 40, 40 ', 40 ", as in the first embodiment.

Here, of the hood columns 40, the hood column 40 ′ located on the rearmost end side and the hood column 40 ″ located on the foremost end side of each hood column 40 are in principle the same column vertical portions 40 D and horizontal extension as described above. Although it has a structure having a portion 40E, the specific structure is slightly different from the other hood columns 40. That is, the hood column 40 'located on the rearmost end side is similar to the hood column 40 in the horizontal column 40D and horizontal column. In addition to having an extension 40E,
A connecting piece 40F for detachably connecting to the adjacent hood column 40 on the front side is provided, and an engaging portion 40G for stopping and holding it at the rear end position of the cargo bed 34 is provided. The connecting piece 40F is configured so as to be able to flip up in a state in which the connection with the front hood column 40 adjacent to the front side is released, and the engaging portion 40G includes a connecting rod 40H that can be tilted 180 ° from the loading platform 34. It is adapted to be engaged with the tip. On the other hand, the hood strut 40 ″ located on the frontmost end side is formed by disposing two unit hood struts 40a and 40b, each of which has a substantially inverted U-shape when viewed from the front-rear direction of the loading platform, with a space in the front-rear direction. The middle portions of the vertical column portions 40D of the columns 40a and 40b are connected by horizontal extension portions 40E, and the upper portions are connected by horizontal connection pieces 40I.

The lower end of the vertical column 40D of each hood column 40 (the hood column including 40 'and 40 ") is supported by the guide rails 38A and 38B so as to be movable in the front-rear direction as in the first embodiment. On the other hand, each hood strut 40 (4
The horizontal extension portion 40E of 0 ') is positioned so that its tip end portion is located on the upper surface side of the horizontal extension portion 40E of another adjacent hood column 40 (40 ″). Later, as shown in FIGS. 17 and 18, a guide portion 54 is formed along the horizontal direction, and at the tip of each horizontal extension portion 40E, another adjacent hood column 40 (40 ″) is formed.
Guide support means 101 is provided that is guided and supported by the guide portion 54 of the horizontal extension portion 40E.

A roller chain 49 (not shown in FIGS. 14 and 15) has a lower end on the rear end side of the hood column 40 'located at the rearmost end of each hood column 40 as a driving means.
It is similar to that of the first embodiment in that it is connected to the tip portion of the.

A guide rail 38A for guiding the lower end of each hood column 40 (40 ', 40 ") in the front-rear direction,
38B is a portion (main part) 381 on the side plates 38A and 38B of the luggage carrier 34, and a torii-shaped front end frame 3 at the front end of the luggage carrier 34.
The base end portion 382 corresponding to the side surface position of No. 5 and the extension portion 383 located on the side surface at the rear of the driver's seat further in front of it. And extension 383
Is mounted so that it can be rotated upward 90 ° and flipped up. And this extension 383
When the truck is in operation (hence, the top is closed), it is supported in a state of being flipped up.

Further, on the shaft 66A of the sprocket 66 (the shaft common to both the left and right sprockets of the cargo bed 34 as described above), the handwheel handle 6 as a manual rotating means.
9 is attached.

In the telescopic hood device of the second embodiment shown in FIGS. 14 to 16 as described above, the handle 69 is operated to rotate the sprocket 66, thereby pushing the roller chain as the driving means in the front-back direction. If you pull the drive,
As in the case of the first embodiment, the rearmost hood column 40 'is moved back and forth, and along with that, the other hood columns 40 are also sequentially moved back and forth to expand and contract the hood 42. That is, the telescopic hood device is opened and closed. Here, in each hood strut 40 (40 '), the guide support means 101 at the tip of the horizontally extending portion 40E is formed in the horizontally extending portion 40E of another hood strut 40 (40 ") adjacent to the front of the loading platform. While being guided by the guide portion 54, the lower ends of the hood columns 40 (40 ') are guided by the guide rails 38.
While being guided by A and 38B, they will move in the front-rear direction. And when the hood 42 is in the most reduced size,
As shown in FIG. 15, each hood column (40, 40 ', 40 ")
Is the base end portion 38 of the guide rails 38A and 38B.
2. Located on the extension 383.

17 and 18, adjacent hood columns 40 are shown.
An example of the specific structure of the connecting portion at the horizontal extension 40E at (40 ′, 40 ″), that is, the specific structure of the guide portion 54 and the guide supporting means 101 is shown.

17 and 18, each hood column 40
At the intermediate position of the vertical column 40D at (40 ', 40 "), a rectangular tubular fixing piece 103 is fixed by a screw or the like so as to surround it, and the side surface of this fixing piece 103 (outside of the luggage carrier). 1) on one end (see FIG. 1) of the column horizontal extension 40E made of a long mold material having a substantially U-shaped cross section.
The right end in 6) is horizontally fixed by an appropriate fixing means. On the inner surface side of the column horizontal extension portion 40E, as the guide portion 54, a pair of vertically extending ridge portions 54 are provided.
a and 54b are provided along the length direction of the column horizontal extension 40E. Further, a long plate-like support piece 105 extending downward and extending downward is fixed to the tip (left end in FIG. 17) of the column horizontal extension portion 40E by a fixing means such as a solid piece 106 and a screw 107. A wheel (guide roller) 109 is attached to the lower side surface of the piece 105 as the above-mentioned guide supporting means 101 so as to be rotatable around a horizontal axis. And this guide roller 10
9 is engaged with the ridges 54a, 54b of the guide portion 54 of the column horizontal extension 40E on the side of the other adjacent hood column 40 (40 ″).

Therefore, in the example shown in FIGS. 17 and 18, when moving each hood column 40 (40 '), the guide roller 109 as the support guide means 101 is projected as the guide portion 54 of the column horizontal extension 40E. Article 5
It rolls while being in contact with 4a and 54b, and the movement in the horizontal direction is guided.

In FIGS. 17 and 18, the virtual line 111
The member indicated by is to prevent the horizontal strut extension 40E of each hood column 40 (40 ', 40 ") from interfering with the hood and to facilitate the movement of each hood column 40 (40', 40"). The protective cover 111 has a top end and a bottom end, which are provided as needed.
0 (40 ', 40 ") is fixed to the outer surface of the vertical column 40D of the column, and the middle portion is the horizontal extension 40 of each column.
It is designed to be spaced a small distance from the outer surface of E.

Furthermore, in the example of FIGS. 17 and 18,
When the hood columns 40 (40 ′, 40 ″) are relatively moved in the direction in which the intervals between the adjacent hood columns 40 (40 ′, 40 ″) are expanded, the support piece 105 and the guide roller 109 are finally moved. Abuts on a horizontally extending portion mounting base end portion on the side of another adjacent hood column, so that the mounting base end portion structurally functions as a stopper.

19 to 25, a connecting portion between the lower end portion of the vertical column 40D of each hood column 40 (40 ") and the guide rail 38A (38B) in the second embodiment,
The configuration of the drive means for pushing and pulling the roller chain 49 will be specifically shown.

19 to 25, the guide rail 3
8A (38B) is the side plate 3 of the cargo bed 34 as described above.
A main portion 381 fixed to the upper surface of 4A (34B),
It is divided into three parts into a base end portion 382 on the side surface side of the torii front end frame 35 and an extension portion 383 in front of which the flip-up is possible. A guide portion 48G having a generally U-shaped cross section is formed on the upper portion of the guide rail 38A (38B).
The guide rail 38A (3
8B) is formed with a ridge portion 48H continuous in the length direction. Further, in the main portion 381 of the guide rail 38A (38B), a traveling guide 48F which is substantially similar to that shown in FIG. 8 for the first embodiment is integrally formed. In this case, it is desirable that the main portion 381 of the guide rail 38A (38B) and the running guide 48F be integrally made of aluminum extruded profile.

On the other hand, the vertical column 40 of each hood column 40
A long plate-shaped extending piece 50A extending downward is fixed to one side of the lower end of D in the thickness direction, and the plate surface near the lower end of the extending piece 50A rotates about a horizontal axis. Wheels 50F are freely attached. The wheel 50F engages with the protruding portion 48H of the guide portion 48G of the traveling guide rail 38A (38B).

In the structure shown in FIGS. 19 to 25 as described above, when the hood column 40 is moved, the wheel 50F at the lower end of the hood column 40 is provided with the ridge of the guide portion 48G of the guide rail 38A (38B). It rolls while engaging with 48H, thereby guiding the horizontal movement of the hood column 40. The upper surface of the wheel 50F and the upper surface 4 of the guide portion 48G
There is a slight gap between the 8I and the 8I.

It is to be noted that the vertical column 40D of the hood column 40 'on the rearmost end is also provided with wheels 50F at its lower end and is guided by the guide rails 38A (38B), as described above. However, this rearmost hood column 4
0'is the same as in the first embodiment.
It is connected to 9. That is, as shown in FIG. 21, the extending piece 50A is further extended downward, and that portion is attached to the pin 49C at the end of the roller chain 49.

In the case of the second embodiment as described above, the portion of the hood column 40 on the side of the platform is linearly continuous from the upper portion to the lower end (portion on the platform side plate) by the column vertical portion 40D. Therefore, the strength is remarkably excellent as compared with the case of the first embodiment having a bent shape.

In the case of the second embodiment, the hood on the side surface of the loading platform is the vertical column 4 of the hood column 40 (40 ', 40 ").
It can be installed at any position above and below 0D.
By the way, in the case of the first embodiment, the lower column 40B of the column is displaced from the upper column 40A of the column in the front-rear direction of the loading platform. Therefore, when the hood is attached to both the upper column 40A and the lower column 40B of the column, the hood is reduced when the hood is reduced. Since a large wrinkle gets close to it and the appearance is significantly impaired, the hood has to be attached only to the column upper portion 40A. On the other hand, in the case of the second embodiment, even if hoods are attached to the upper and lower portions of the vertical column 40D, the above-mentioned wrinkles do not occur when the hood is reduced, and in that case the hood is stable. Become.

Further, the structure of the driving portion of the roller chain 49 will be described with reference to FIGS. 19 to 25, focusing on the points different from the case of the first embodiment.

19 to 25, the main difference from the first embodiment is that neither the inner guide 74 nor the outer guide 76 is curved, and is a straight line along the horizontal direction. That is the point. That is, in the example of FIGS. 19 to 25, the inner guide 74 is horizontal and linear from the position corresponding to the outer peripheral top of the sprocket 66 along the tangential direction thereof toward the base end (entrance) 48Fc of the traveling guide 48F. It is configured to extend to. The inner guide 74 has a fork-shaped bifurcated portion on the tip side (left side in FIGS. 19 and 20), and a part of the sprocket 66 is provided between the tips of the bifurcated portions 74f and 74g. Will be located. On the other hand, the outer guide 76 is integrally formed with the base end portion 382 of the guide rail 38A (38B), and its cross-sectional shape is a traveling guide in the main portion 381 of the guide rail 38 shown in FIGS. It has a shape in which the lower guide portion 48Fa of 48F is deleted. The outer guide 76 is provided on the sprocket 6
Sprocket 66 from a position before the top of the outer circumference of 6
It is configured to extend horizontally and linearly beyond the outer peripheral apex toward the base end (entrance) 48Fc of the traveling guide 48F.

Even in the case of the examples of FIGS. 19 to 25, the effect similar to that of the first embodiment can be exhibited, and since the inner guide 74 and the outer guide 76 are simply linear, the first guide having the curved portion is provided. The processing cost can be remarkably reduced as compared with the case of the first embodiment.

As an application example of the second embodiment as described above, each hood column 40 (40 ′, 40 ″) can be provided with column horizontal extension parts 40 E in two or more upper and lower stages, in which case Is structurally robust as a whole and can prevent rattling during expansion and contraction, etc. An example of this case is schematically shown in FIG.

Further, as an application example of the second embodiment, when the loading platform is long (thus, when the number of hood columns 40 is large).
In addition, the stacking stage of the horizontal extension portion 40E may be cut down midway. An example in that case is shown in FIG. According to this structure, even if the loading platform is long and the number of hood columns 40 is large,
It is possible to prevent the position of the horizontally extending portion 40E from becoming extremely high at the end hood column, and it is possible to easily cope with lengthening.

In the telescopic hood device of the present invention, as the roller chain 49, an engineering plastic may be used in order to reduce the weight and the driving force. In this case, generally, the roller portion and the inner link piece portion are often made of engineering plastic, and the outer link piece is often made of metal. When such a roller chain 49 is used, a running guide 48F (however, this is usually a guide rail 38A (38
(Which is integrated with B)) is preferably configured as shown in FIG. 28 or FIG.

That is, in the case of FIG. 28, the running guide 48
F upper guide portion 48Fa and lower guide portion 48Fb
Both of them are made to contact the inner link piece 49a made of engineering plastic in the roller chain 49. In the case of FIG. 29, the upper guide portion 48Fa of the traveling guide 48F is the roller chain 49
Of the engineering plastic, and the lower guide portion 48Fb is formed so as to contact the portion of the inner link piece 49a of the roller chain 49.

The telescopic hood device of the present invention can be applied not only to the telescopic hood of the truck bed but also to the telescopic hood of the trailer cargo bed and other trolleys of the container bed.

[0091]

In the telescopic hood device for a cargo bed of the present invention, compared with the conventional telescopic hood device using a crossbar,
There are few parts that project inward from the hood column, so when a load collapse occurs, there is very little risk that the load will catch on the projecting part and it will be difficult to reduce (open) the telescopic hood, and it will always be smooth. The telescopic hood can be opened and closed. Further, the total thickness of the hood support portion is smaller than that of the conventional hood device using a crossbar, so that when the hood is reduced, it is possible to move the hood to a portion in front of the cargo bed, for example. The workability of loading and unloading is remarkably better than before, and it is possible to effectively utilize the space of the loading platform. Further, when contracting or extending the telescopic hood, not all hood posts start moving all at once as in the case of an extendable hood using a crossbar, but start moving sequentially from the rearmost hood post. Therefore, the torque of the drive source at the time of starting the movement is small, and therefore, it can be easily put into practical use, especially in the case of a loading platform such as a large truck. Further, particularly in the case of the invention of claim 8, even if the side plate of the truck carrier is a tiltable tilting plate, it is not necessary to provide the opening / closing drive device on the lower side of the carrier, so that the influence of mud, gravel, etc. The durability can be sufficiently improved without receiving.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment in which the telescopic hood device of the present invention is applied to a truck bed.

FIG. 2 is a vertical sectional view taken along line II-II of FIG.

FIG. 3 is a side view showing an example of a state in which the telescopic hood of the first embodiment shown in FIG. 1 is contracted.

FIG. 4 is a side view showing an example of the structure of a hood column used in the telescopic hood device of the first embodiment of the present invention.

FIG. 5 is an enlarged side view showing an example of the configuration near the lower end of the hood column in the telescopic hood device of the first embodiment of the present invention.

6 is a vertical cross-sectional view taken along the line VI-VI of FIG.

FIG. 7 is a side view showing an example of a configuration near a lower end of a rearmost hood column of the hood column in the telescopic hood device of the first embodiment of the present invention.

8 is a vertical cross-sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a side view showing an example of the configuration of a connecting portion between the column intermediate portions of the adjacent hood columns, that is, a guide supporting means in the telescopic hood device of the first embodiment of the present invention.

10 is a vertical cross-sectional view taken along line XX of FIG.

FIG. 11 is a partially omitted side view showing an overall configuration of an example of a driving means used in the telescopic hood device of the present invention.

FIG. 12 is a partially enlarged side view showing a situation around the sprocket of the drive means shown in FIG. 11.

13 is a vertical sectional view taken along line XIII-XIII in FIG.

FIG. 14 is a side view showing the overall configuration of the telescopic hood device of the second embodiment of the present invention in a state when the hood is extended.

FIG. 15 is likewise the telescopic hood device of the second embodiment,
It is a side view shown in the state at the time of hood reduction.

FIG. 16 is a perspective view showing one of the hood columns used in the second embodiment.

FIG. 17 is a side view showing a configuration of a connecting portion between adjacent hood columns, that is, a guide supporting portion in the second embodiment, corresponding to FIG. 9;

18 is a vertical sectional view taken along line XVIII-XVIII in FIG.

FIG. 19 is a side view showing a configuration near a lower end of a hood column and a configuration of a driving means in the second embodiment in a midway state in which the hood is contracted and further moved forward.

FIG. 20 is a side view showing the configuration of the vicinity of the lower end of the hood column in the second embodiment in a state in which the hood has been reduced and the forward movement of the hood has been completed.

21 is a vertical sectional view taken along the line AA in FIG.

22 is a vertical sectional view taken along the line BB in FIG.

23 is a vertical cross-sectional view taken along the line CC of FIG.

24 is a vertical cross-sectional view taken along the line DD in FIG.

25 is a vertical cross-sectional view taken along the line EE in FIG.

FIG. 26 is a schematic diagram showing one application example of the second embodiment.

FIG. 27 is a schematic diagram showing another application example of the second embodiment.

FIG. 28 is a vertical cross-sectional view showing another example of the traveling guide used in the telescopic hood device of the present invention.

FIG. 29 is a vertical cross-sectional view showing still another example of the traveling guide used in the telescopic hood device of the present invention.

FIG. 30 is a side view showing an example of a telescopic hood device for a truck bed that has been conventionally considered.

[Explanation of symbols]

 30 truck 34 bed 34A, 34B side plate 36 telescopic hood device 38A, 38B guide rail 40, 40 ', 40 "hood column 40A column upper 40B column lower 40C column middle section 40D column vertical section 40E column horizontal extension 44 guide support means 48 , 48A, 48B Guide part 49 Roller chain 49A Roller 49B Link 50C, 50D Lower wheel 50E Upper wheel 54A, 54B Guide part 56C, 56D Lower wheel 56E Upper wheel 66 Sprocket 74 Inner guide 76 Outer guide

Claims (9)

[Claims] 1. A plurality of hood columns, each of which has a substantially inverted U shape as a whole when viewed from the front-rear direction of the luggage carrier, is provided between one side portion and the other side portion in the longitudinal direction of the luggage carrier. In a telescopic hood device for a cargo bed, the plurality of hood columns are bridged over each other at predetermined intervals, and the hood columns are entirely covered with the hood columns, and the hood columns can be extended and retracted by moving the hood columns in the front-back direction. Horizontal guides are formed along the front and rear direction of the carrier on the side of the carrier on the side of the carrier, and guide rails are provided on the sides of the carrier along the direction of the carrier. A guide support means is supported by the guide rails so as to be movable in the front-rear direction, and further, each hood column is provided with guide support means that is supported by the guide portion of another adjacent hood column so as to be relatively movable in the horizontal direction. Has been Further, among the hood columns, a driving means for moving the hood column in the front-rear direction is connected to a lower end of the hood column located at the rearmost end of the hood column. apparatus. 2. A portion of the hood column on the side of the cargo bed side is a vertical column upper part, a vertical column lower part located at a position displaced from the column upper part in the longitudinal direction of the platform, and along the longitudinal direction of the platform. It is composed of a horizontal middle column that connects between the lower end of the upper column and the upper end of the lower column,
The expandable hood device for a cargo bed according to claim 1, wherein the guide portion is formed in a middle portion of the support column, and the guide support means is provided on one end side of the middle portion of the support column. 3. A portion of the hood column on the side of the platform is a vertical column vertical portion, and a column horizontal extension portion that is horizontally extended along the platform front-rear direction from an intermediate vertical position of the column vertical portion. 2. The luggage carrier according to claim 1, wherein the guide portion is formed on a horizontally extending portion of the supporting column, and the guide supporting means is provided at a distal end portion on the extending side of the supporting column horizontal portion. Telescopic hood device. 4. The base of the horizontal extension of each of the hood columns is fixed to the outer surface side of the loading platform with respect to the vertical part of the vertical column. The expandable hood device for a cargo bed according to claim 3, which is located on an outer surface side of the cargo bed in a horizontal portion of the pillar. 5. The expandable hood device for a cargo bed according to claim 1, wherein the guide portions of each hood column are provided so as to be vertically positioned in the same vertical plane. 6. The expandable hood device for a cargo bed according to claim 1, wherein the guide support means is constituted by a wheel rotatably attached to the hood support so as to roll along the guide portion. 7. The expandable hood device for a cargo bed according to claim 1, wherein a wheel is rotatably attached to a lower end of each hood column, and the wheel is rollable along the guide rail. 8. The expandable hood device for a luggage carrier according to claim 1, wherein the drive means includes: a non-annular roller chain having a plurality of rollers connected to each other by links and having an open end. A linear travel guide provided along the side of the bed for guiding the travel of the roller chain with the roller chain sandwiched between the roller chain and the rollers of the roller chain to move the roller chain forward and backward. For this purpose, a sprocket that can be rotated normally and reversely is provided in the vicinity of the base end of the traveling guide, a rotating means for rotating the sprocket in both forward and reverse directions, and the sprocket meshes with the sprocket near the sprocket. A roller chain is proposed by abutting or facing the roller chain link from the side close to the sprocket rotation center axis. And an outer guide for guiding the roller chain by abutting or facing the link or roller of the roller chain that meshes with the sprocket near the sprocket from the side far from the rotation center axis of the sprocket. , And, the ends of the inner guide and the outer guide on the travel guide side are configured to be parallel to the extension line of the travel guide, and each hood is provided near the tip of the roller chain. An extendable hood device for a cargo bed, to which the lower end of the last hood of the stanchions is attached. 9. The expandable top / bottom device for a luggage carrier according to claim 8, wherein the guide rail and the traveling guide are integrally made of an aluminum extruded profile, and the aluminum extruded profile is provided on a side portion of the luggage carrier. An expandable hood device for the loading platform provided.