JP3153585U - Air resistance reduction device for truck bed - Google Patents

Abstract

An object of the present invention is to provide an apparatus for reducing the air resistance of a truck bed which can be easily extended and folded. An air resistance reducing device is provided with a foldable planar member (13) between an upper part of a rear tilt (5) pivoted to a rear part of a truck bed by a hinge (6) and a bed floor (3). The planar member 13 has one edge fixed to the base frame 9 and the other edge fixed to the frame body 11. When the frame 11 is rotated clockwise around the hinge 12, the planar member 13 is folded in half, and the frame 11 and the base frame 5 overlap with the planar member 13 therebetween. When the rear tilt 5 is opened, the rear tilt 5 and the air resistance reducing device 8 hang down while overlapping. [Selection] Figure 5

Description

  The present invention relates to an air resistance reducing device for a truck bed.

  There are various proposals to reduce the running resistance due to rear tilt when the truck runs with an empty load.

  Patent Document 1 discloses that the deflecting plate is accommodated along a vertical guide groove provided on the rear tilt (gate rear plate portion). In Patent Document 2, a turning plate having one side connected to the upper end of a rear tilt (tail gate) is provided on the front and lower sides, and this turning plate is used as a first turning plate at the front end of the first turning plate. It is shown that when the two deflection plates are joined and the rear tilt is opened and suspended, the first deflection plate overlaps with the rear tilt and the second deflection plate overlaps with the cargo bed. In Patent Document 3, one end of a cargo bed cover is pivotally attached to the upper end of a rear tilt (rear tilt plate), and the load platform cover is supported by a stay at a position perpendicular to the rear tilt, or along the rear tilt. I am trying to accommodate it.

Patent Document 1 Japanese Patent Application Laid-Open No. 2009-006794 Patent Document 2 Japanese Patent Application Laid-Open No. 2000-264262 Patent Document 3 Japanese Utility Model Laid-Open No. 56-164842

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  According to the invention according to Patent Document 1, it is difficult to smoothly insert and remove the deflecting plate with respect to the vertical guide provided in the rear tilt approximately at the same distance as the vehicle width, and the operation is also horizontal. Must be moved up and down in the vertical direction, which is not a smooth operation.

  The invention according to Patent Document 2 is excellent in that a negative lift acts on the rear side of the truck. However, when the rear tilt is opened and suspended, the second turning plate is on the cargo bed floor surface. Cargo cannot be loaded on the turning plate.

  According to the invention according to Patent Document 3, when the rear tilt is opened and suspended, the tip of the rear tilt becomes the lower end, and there is a concern that the cargo bed cover may be rotated away from the rear tilt.

  The device for reducing the air resistance of a truck bed shown in the invention according to each patent document is not detachable from the truck.

  This device produces a negative lift and easily folds. By folding, the cargo can be substantially loaded up to the rear tilt, supported stably when the rear tilt is opened, and stretched. An object of the present invention is to provide a device for reducing the air resistance of a truck bed that is smooth and easy to fold.

  An object of the present invention is to provide an air resistance reducing device that can be easily attached to and detached from a truck bed.

A first device according to the present application is an air resistance reduction device provided before the rear tilt of a truck bed,
A frame which is pivotally attached to the lower side of the rear cargo bed side on the horizontal axis and takes a position along the rear axle and a position along the cargo bed floor;
A collapsible planar member that joins the front end side of the frame body and the upper side of the rear tilt, and is stretched or slung when the frame is on the cargo bed, and the frame body is rear tilted A planar member that is folded at a position along;
A device for reducing the air resistance of a truck bed.

  According to a second aspect of the present application, the frame and the planar member are attached to a base frame fixed to the rear tilt along the rear tilt on the loading platform side of the rear tilt. It is a device for reducing the air resistance of truck beds.

  According to a third aspect of the present application, there is provided a device for reducing an air resistance of a truck bed according to the second aspect, wherein the base frame is detachably attached to a rear tilt.

  According to the first aspect of the present invention, the planar member is obliquely inclined forward and downward, so that a negative lift acts when the truck travels, and in particular, the planar member is folded when it contributes to stable traveling when the vehicle is empty. Since the folded planar member is accommodated along the rear tilt, the cargo is substantially loaded up to the rear tilt. Further, when the rear tilt is opened, the present apparatus does not require a separate support member and maintains a stable state. The operation of extending and folding the planar member is smooth and simple because the frame body is merely rotated about 90 degrees around the pivoting portion of the frame body to the rear tilt.

  According to the second aspect of the invention, it is easy to unitize the base frame, the frame body, and the planar member, and the mounting work to the truck is completed simply by attaching the base frame to the rear tilt. is there.

  According to the device according to claim 3, in the device according to claim 2, the base frame can be detachably provided on the rear tilt. Therefore, the air resistance reducing device can be attached to and detached from the truck, and no special installation work is required using a special member for the truck.

It is a perspective view seen from the front diagonal upper side of a track. It is the perspective view seen from the back diagonally from the track. It is a side view of the air resistance reduction apparatus of an Example. It is a side view of the air resistance reduction apparatus of another Example. It is a side view of the air resistance reduction apparatus of another Example. It is a side view which shows the effect | action of an Example. It is a side view which shows the effect | action of an Example. It is a side view which shows the effect | action of an Example. It is a side view of another Example. It is a side view of another Example. It is a front view which removes a part member in FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of the truck 1 as viewed obliquely from above and FIG. 2 is a perspective view of the truck 1 as viewed from obliquely upward. The loading platform 2 of the truck 1 has side plates 4 and 4 standing on both sides of the loading platform floor 3 and a rear tilt 5 attached to the rear end.

  The rear tilt 5 is attached to the loading platform 2 with a hinge 6 so that the rear portion of the loading platform 2 can be opened and closed immediately below the rear end of the loading platform floor 3. The rear tilt 5 is fixed to the side plate 4 so that it can be unlocked by the buckle 7 in a state in which the loading platform 2 is closed by the rear tilt 5. The tail key 7 has a latch attached to the rear tilt 5 and a side plate 4 to which a receiver for engaging and disengaging the latch is fixed.

  As shown in FIG. 1, an air resistance reducing device (hereinafter referred to as an air resistance reducing device) 8 for a truck bed is provided at the rear of the loading platform 2. The air resistance reducing device 8 is attached to the inner side of the rear tilter 5.

  FIG. 3 is a longitudinal sectional view of the rear part of the loading platform including the rear tilt. A rectangular base frame 9 having an inner rectangular width w of the loading platform 4 and a width substantially perpendicular to the traveling direction of the track 1 is fixed to the inner side surface of the rear tilt 5. The vertical position of the upper edge 9 a of the base frame 9 is substantially equal to the upper edge 5 a of the rear tilt 5.

  The base frame 9 may be fixed to the rear tilt 5 by any method such as adhesion, magnet, and screwing. The base frame 9 may be a single plate or a frame with a four-sided frame.

  The lower edge 9b of the base frame 9 and the frame body 11 are connected by a hinge 12 such as a hinge. In FIG. 3, the height of the base frame 9 and the length of the frame 11 in the front-rear direction of the track 1 are substantially equal. The width of the frame 11 perpendicular to the traveling direction of the track 1 is substantially equal to the inner rectangular width w of the loading platform 2. The frame 11 may be a single plate or a frame with a four-sided frame.

  The other side of the planar member 13 having one side fixed to the end surface on the upper edge 9 a side of the base frame 9 is fixed to the end surface of the front edge 11 a of the frame 11. The planar member 13 and the base frame 9 or the frame body 11 are fixed by adhesion or adhesion and tacking. The width of the planar member 13 perpendicular to the traveling direction of the track 1 is substantially equal to the inner width w of the loading platform 2.

  Various types of planar members 13 are conceivable. One is a flexible sheet. Examples of the flexible sheet include a soft synthetic resin sheet, a soft rubber plate, and a canvas. One is a folding member. FIG. 4 shows a folding member. As a folding member, a strip-shaped strip (long in a direction perpendicular to the traveling direction of the track 1) 13b is connected by a hinge 13a. A metal plate or a vinyl chloride plate is selected as the elongated piece 13b. The hinge 13a is usually formed integrally with the elongated piece 13b at the edge of the elongated piece 13b. The hinge 13a is made of soft vinyl chloride, and the elongated piece 13b is made of hard vinyl chloride. Or you may affix the strip 13b of a metal plate on the back of the vinyl chloride sheet loosely stretched between the upper edge 9a of the base frame 9 and the front edge 11a of the frame 11.

  In FIG. 4, when the elongated piece 13b is two pieces, it will become like FIG.

  In FIG. 5, the hinge 13a is a hinge. One elongated piece 13b is joined to the base frame 9 by a hinge 13c. The other elongated strip 13b and the frame 11 are joined by a hinge 13d.

  The air resistance reducing device 8 is configured by the base frame 9, the frame body 11, and the planar member 13 described above.

  The operation of the above configuration will be described. When the truck 1 travels in the forward direction, an air flow is generated relative to the truck 1. As shown in FIGS. 1 and 6, when the frame body 11 is along the cargo bed floor 3, the planar member 13 is a front-down surface in the traveling direction of the track 1 and a concave curved surface in the forward direction. . As the truck 1 travels, the air flow over the cabin 10 is directed to the planar member 13 as shown by the streamline a, and an air flow rising along the planar member 13 is generated. As a result, the running resistance is reduced and a negative lifting force is generated, and a force for pressing the rear wheel of the truck 1 against the ground is added, so that running stability and driving force are increased and fuel saving is achieved.

  In order to load the cargo, the buckle 7 is unlocked and the rear body 5 is rotated clockwise around the hinge 12 before the rear tilt 5 is rotated clockwise around the hinge 6 in FIGS. When moved, the planar member 13 is folded in two between the frame 11 and the base frame 9 as shown in FIG. 7, and the frame 11, the planar member 13, and the base frame 9 overlap. Here, when the buckle 7 is unlocked and the rear tilt 5 is rotated clockwise around the hinge 6, the frame 11 is located above the rear tilt 5 with the folded-up planar member 13 in between. When the rear tilt 5 and the air resistance reducing device 8 hang down, the rear tilt 5 and the air resistance reducing device 8 are in the state shown in FIG. In the state of FIG. 8, there is a hinge 12 below the hinge 6. Since the frame body 11 hangs down from the hinge 12, the frame body 11 extends along the rear tilt 5 with the folded-up planar member 13 therebetween. In this state, the frame 11 is in a stable posture.

  In the state of FIG. 8, the rear tilt 5 and the air resistance reducing device 8 are located below the loading platform floor 3, so that loading and unloading of cargo on the loading platform 2 can be performed without any trouble. The cargo loading is reduced by the thickness δ (see FIG. 7) of the air resistance decompression device 8 folded from the front surface of the rear tilt 5. Since the thickness δ is a small value compared to the length of the loading platform 2 in the front-rear direction, a decrease in the loading amount of the loading platform 2 is slight.

  When the rear tilt 5 is turned counterclockwise around the hinge 6 from the state of FIG. 8 and closed, the result is as shown in FIG. When there is no cargo at the rear part of the loading platform 2, when the frame body 7 is tilted forward about the hinge 12 in FIG. 7, the planar member 13 is stretched in a slack state as shown in FIG. 6. Becomes a concave curved surface with respect to the traveling direction of the track 1. In addition, when the frame body 11 becomes a right angle with respect to the base frame 9, the planar member 13 can also become a plane. At this time, or when the curvature of the concave surface of the planar member 13 is large, a stay with a double-fold link structure between the base body 9 and the frame 11 or one frame 9 or 11 is pivotally attached to the other frame 11 or 9. By providing an arm that is engaged and disengaged, the frame 11 can be prevented from rising from the cargo bed floor 3.

  Also in the embodiment of FIGS. 4 and 5, the action is the same as that of the embodiment of FIG. 3 except that the planar member 13 is a hinge 13a and the elongated piece 13b is bent.

  FIG. 9 shows means for easily attaching / detaching the air resistance reducing device 8 to / from the rear tilt 5. The rear tilt 5 is usually a molded product of an iron plate. Therefore, a magnet 14 is embedded in the base frame 9 as shown in FIG. The magnet 14 is positioned so as to be attracted to a vertical plane portion on the front surface of the rear tilt 5. The base frame 9 is provided with a plurality of pins 9c that are in contact with the bent upper edge 5a and lower edge 5b of the rear tilt 5 in the width direction of the track 1, respectively. This prevents the base frame 9 from sliding along the rear tilt 5 on the front surface of the rear tilt 5 when the rear tilt 5 is in the vertical position.

  10 and 11 show another embodiment of the air resistance reducing device 8 which can be easily attached to and detached from the rear tilt 5. FIG. 11 shows the frame 11 and the planar member 13 removed. The upper edge 5a of the rear tilt 5 has a key-shaped cross section whose tip is lowered toward the front. The lower edge 5b side of the rear tilt 5 has a step portion 5d on the front side.

  A shaft 15a that rotatably fits in a round hole 9d in the front-rear direction of the track 1 that passes through the base frame 9 at the top of the base frame 9, and a front edge of the upper edge 5a of the rear tilt 5 at the rear end of the shaft 15a. A latch 15 having a cam 15b in contact with the rear side surface and a lever 15c provided at the front end of the shaft 15a is provided.

  In a state where the cam 15b is engaged with the upper edge 5a of the rear tilt 5, the lever 15c has a longitudinal direction crossing the plane of FIG. When the lever 15c is pivoted about the shaft 15a, the cam 15b is turned sideways so as to be detached from the upper edge 5a of the rear tilt 5 and the upper part of the base frame 9 can be separated from the rear tilt 5.

  As shown in FIGS. 10 and 11, a bracket 9 e that protrudes into the rear tilt 5 is provided at the lower portion of the base frame 9. The screw member 16 screwed into the bracket 9e can press the left and right end plates 5c in the vertical direction of the rear tilt 5. By rotating a cylindrical knob 16a provided on the screw member 16, the screw member 16 presses the end plate 5c, the lower end of the base frame 9 is fixed to the rear tilt 5, and the pressurization is released to release the base frame. 9 can leave the rear tilt 5. The frame 11 is provided with a notch 11b so as not to interfere with the turning of the knob 16a (see FIG. 10).

  As a method of detachably attaching the base frame 9 to the tilt 5, the hook base is fixed to the top of the base frame 9, and the hook collar is strung over the upper edge 5 a of the rear tilt 5 to be engaged and disengaged. Also good. In this case, since the air resistance reducing device 8 is suspended and housed on the rear tilt 5, it is necessary to remove it from the rear tilt 5 in advance when opening the rear tilt 5. Then, after the rear tilt 5 is closed, the air resistance reducing device 8 is attached to the rear tilt 5 (not shown).

DESCRIPTION OF SYMBOLS 1 ... Truck 2 ... Loading platform 3 ... Loading platform floor 4 ... Side plate 5 ... Rear tilt 5a ... Upper edge 5b ... Lower edge 5c ... End plate 5d ... Step part 6 ... Hinge 7 ... Buckle 8 ... Air resistance reduction apparatus
DESCRIPTION OF SYMBOLS 9 ... Base frame 9a ... Upper edge 9b ... Lower edge 9c ... Pin 9d ... Round hole 9e ... Bracket 10 ... Cabin 11 ... Frame 11a ... Front edge 11b ... Notch 12 ... Hinge 13 ... Planar member 13a ... Hinge 13b ... Strip 13c ... hinge 13d ... hinge
DESCRIPTION OF SYMBOLS 14 ... Magnet 15 ... Latch 15a ... Shaft 15b ... Cam 15c ... Lever 16 ... Screw member 16a ... Knob

Claims (3)

In the air resistance reduction device installed in front of the rear of the truck bed,
A frame which is pivotally attached to the lower side of the rear cargo bed side on the horizontal axis and takes a position along the rear axle and a position along the cargo bed floor;
A collapsible planar member that joins the front end side of the frame body and the upper side of the rear tilt, and is stretched or slung when the frame is on the cargo bed, and the frame body is rear tilted A planar member that is folded at a position along;
A device for reducing the air resistance of a truck bed, characterized by comprising: The air resistance reduction device for a truck bed according to claim 1, wherein the frame and the planar member are attached to a base frame fixed to the rear tilt along the rear tilt on the rear tilt platform side. The air resistance reducing device for a truck bed according to claim 2, wherein the base body is detachably attached to the rear tilt.

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