JP7219191B2 - rear structure of truck body - Google Patents

Description

The present invention relates to a rear structure of a truck body that reduces air resistance during running.

Types of bodies that form the box or luggage compartment of a truck include wing bodies, van bodies, swap bodies, and the like. The wing body is a type in which the side walls and a part of the ceiling wall of the box are flipped up, and the van body is a type in which the left and right side walls of the box and the ceiling wall are integrated. The swap body is a box that can be attached to and detached from the chassis of the truck, and includes a wing type and a van type.

As described in Patent Document 1, a rear frame including left and right rear posts and a rear upper is provided at the rear portion of the wing body, and a rear door is attached to the rear frame so as to be openable and closable. A plurality of hinge members are attached to the left and right rear posts for supporting the rear door so that it can be opened and closed. protrudes rearward from the rear door.

At the rear of the van body, as described in Patent Document 2, door members as rear doors are attached to left and right side panels integrated with the ceiling panel so as to be openable and closable. A plurality of hinges are attached to the rear end surfaces of the left and right side panels to support the door member so that it can be opened and closed. Side plate-shaped members are provided at portions of the left and right side panels where the hinges are not provided, and an upper plate-shaped member is provided on the rear end surface of the ceiling panel, and each plate-shaped member is a door member. protruding backwards.

JP 2012-101716 A JP 2011-148469 A

When a rectifying plate or plate-like member is provided at the rear end of the body to which the rear door can be freely opened and closed so as to protrude behind the rear door, the air flowing along the body is sent to the rear of the body when the truck is running. . As a result, a negative pressure phenomenon generated behind the body can be suppressed, and the air resistance applied to the body during running can be reduced. In order to enhance the effect of suppressing the generation of negative pressure, it is preferable to increase the dimension of the current plate and the plate member in the vehicle front-rear direction. However, if the front-to-rear dimensions of the right and left rear posts and the straightening vanes provided on the side panels at the rear end of the body are lengthened, and the protruding dimension of the straightening vanes, etc. to the rear of the door is lengthened, the opening and closing center side of the rear door will be increased. The side faces interfere with the rear end portion of the rectifying plate or the like. For this reason, the projecting dimension of the rectifying plate cannot be increased, and there is a limit to the effect of suppressing the generation of negative pressure.

The hinge member and the current plate are attached to the rear end surface of the body by bolts. For this reason, it is necessary to attach a plurality of hinge members and a plurality of rectifying plates and the like to the body with bolts, which takes time.

SUMMARY OF THE INVENTION An object of the present invention is to efficiently manufacture a body capable of reducing air resistance.

The present invention provides a rear structure of a truck body having left and right side walls and a ceiling wall, and having a rear door rotatably mounted thereon, wherein a support pin for supporting a door-side hinge fixed to the rear door is mounted. a plurality of body-side hinges each having a support plate and a mounting plate fastened to the rear end face of the side wall; a base mounted to the rear end face of the side wall; a plurality of side guides having inclined guide portions projecting rearward; and fastening pieces provided on the base portions of the side guides and arranged between the mounting plate of the body-side hinge and the rear end surface of the side wall. and a bolt passing through a fastening hole provided in the fastening piece and a mounting hole provided in the mounting plate to fasten the side guide and the body-side hinge together to the side wall.

The truck body has left and right side walls and a ceiling wall. A rear door is rotatably attached to the rear end of the body. Supported. A plurality of side guides are attached to the rear end surface of the side wall, and the side guides have a base attached to the rear end surface and an inclined guide portion that inclines inward in the vehicle width direction from the rear end surface and protrudes rearward of the body. is provided with a fastening piece arranged between the mounting plate of the body side hinge and the rear end surface of the side wall, and bolts passing through the fastening hole provided in the fastening piece and the mounting hole provided in the mounting plate Since the side guide and the body-side hinge are fastened together to the side wall, they can be screwed at the same time, and the work of screwing the body-side hinge and the side guide can be done in a short period of time, thereby improving the efficiency of assembling and manufacturing the truck body. can be improved.

When the air flowing along the left and right side walls of the body passes through the side walls while the truck is running, the air is guided along the slanted guide surfaces of the slanted guide portion and sent inward in the vehicle width direction around the rear of the body. be As a result, the negative pressure phenomenon generated behind the body can be sufficiently suppressed, and the air resistance applied to the body during running can be reduced.

In addition to the inclined guide portion of the side guide, forming an inclined wall formed with an inclined surface connecting to the inclined surface of the inclined guide portion at the rear end portion of the side wall enhances the effect of suppressing the negative pressure phenomenon generated behind the body. can be done.

1 is a schematic perspective view showing a wing body, which is an example of a truck body; FIG. FIG. 2 is a front view showing a rear wall of the wing body shown in FIG. 1; FIG. 4 is a top plan view of the rear wall portion of the wing body; 3 is an enlarged front view of a portion A in FIG. 2; FIG. It is a perspective view which shows a body side hinge and a part of side guide. (A) is a plan view showing a door-side hinge provided on the rear door, and (B) is a left side view of (A). (A) is an enlarged sectional view taken along line 7A-7A in FIG. 4, and (B) is an enlarged sectional view taken along line 7B-7B in FIG. (A) is a cross-sectional view showing a modification of the upper guide shown in FIG. 7(B), and (B) is a cross-sectional view showing another modification of the upper guide. (A) is an enlarged cross-sectional view taken along line 9A-9A in FIG. 4, and (B) is a cross-sectional view showing a state in which the rear door is opened from the state of (A). 2 is a side view showing a rear end portion of a side wall of the wing body shown in FIG. 1; FIG. It is sectional drawing which shows the attachment procedure of a side guide and a hinge member. It is sectional drawing which shows the side guide by the side of an upper end part, and the attachment procedure of a hinge member. It is sectional drawing which shows the side guide by the side of a lower end part, and the attachment procedure of a hinge member.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

A truck 10 shown in FIG. 1 is of a type in which a box-shaped wing body 11 is mounted on a loading platform 12 of the truck. and a rear wall 15 arranged at the rear end of the floor plate 13 . Fanning plates 16 are attached to the left and right sides of the floor plate 13 by hinge portions so as to be freely opened and closed in the left and right direction. A support beam (not shown) is attached between the upper end of the front wall 14 and the upper end of the rear wall 15 so as to be positioned at the center in the vehicle width direction. Left and right wings 17 are attached to the support beam so that they can be opened and closed in a vertical flip-up manner. are united.

A frame 21 is provided at the rear portion of the wing body 11 . The frame 21 has left and right side frames 22 and an upper frame 23 connected to upper ends of both side frames 22 , and the frame 21 forms a rear structure of the wing body 11 . The side frame 22 constitutes the side wall 18 of the wing body 11 together with the side wall portion 17a of the wing 17 and the fan plate 16, and the upper frame 23 constitutes the ceiling wall 19 of the wing body 11 together with the top wall portion 17b of the wing 17. Two rear doors 24 are attached to the frame 21 so as to be freely opened and closed, and the rear doors 24 form a rear wall 15 of the wing body 11 . A luggage compartment 20 for accommodating luggage is formed inside the wing body 11, and the luggage compartment 20 is closed when the wings 17 are closed and the rear door 24 is closed.

As shown in FIG. 2 , four door-side hinges 25 are fixed to the left and right sides of the outer surface of each rear door 24 , and each door-side hinge 25 is attached to the rear end surface of the side wall 18 . It is rotatably supported by a body-side hinge 26 attached corresponding to 25 . Each rear door 24 is provided with an operation rod 27, which is operated when locking the rear door 24 and also when opening and closing the door. 1, the door-side hinge 25, the operation bar 27, and the like are omitted from illustration.

As shown in FIG. 5 , the body-side hinge 26 has a rectangular mounting plate 28 and two support plates 29 . The mounting plate 28 is fastened to the rear end surface of the side frame 22 forming the rear end portion of the side wall 18 of the wing body 11, and the two support plates 29 are welded parallel to each other in the direction perpendicular to the outer surface of the mounting plate 28. It is Both ends of the mounting plate 28 project outward beyond the support plate 29 , and the projecting portions form pressing ends 31 . Two mounting holes 32 are provided in the mounting plate 28 . The width of the tip of each support plate 29 is larger than the width of the base end, and the tip protrudes outward in the vehicle width direction from one side of the mounting plate 28 . A pin support hole 33 is formed in the protruding portion of the tip, and the two pin support holes 33 are coaxial.

As shown in FIGS. 4 and 6, the door-side hinge 25 is attached to the outer surface of the rear door 24 by means of a base end portion 35 provided with a cylindrical portion 34 and four fixing members 36 made up of screws, rivets, or the like. A fixed end portion 37 is provided, and a step portion 38 is provided between the fixed end portion 37 and the base end portion 35 . The door-side hinge 25 is attached to the body-side hinge 26 by a support pin 39 inserted into the cylindrical portion 34, as indicated by a two-dot chain line in FIG. 6(A). The support pin 39 has one end inserted into the upper pin support hole 33 and the other end inserted into the lower pin support hole 33 . A head portion 39a having a diameter larger than that of the pin support hole 33 is provided at one end portion of the support pin 39, that is, the upper end portion thereof, and the other end portion of the support pin 39, that is, a portion protruding downward from the lower pin support hole 33. A retainer (not shown) is attached to the .

As shown in FIGS. 7 and 9 , the side frame 22 as the rear end portion of the side wall 18 has an inner panel 41 . A rear wall 42, an inclined wall 43, and a front wall 44 are provided at the rear end of the inner panel 41 in the vehicle running direction. formed. The inclined wall 43 is inclined inward in the vehicle width direction toward the rear of the wing body 11 . A flange portion 46 bent perpendicularly to the inner panel 41 is provided at the front end portion of the inner panel 41 , and a reinforcing plate 47 extending in the vehicle width direction is attached to the outer surface of the inner panel 41 . When the wings 17 are closed, the side walls 17a of the wings 17 overlap the side frames 22 so as to cover the outside. In FIGS. 7 and 9, the panel material forming the side wall portion 17a is indicated by a chain double-dashed line.

FIG. 10 shows a state in which the fan plate 16 and the wing plate 17 are closed and the side wall portion 17a of the wing 17 and the fan plate 16 overlap the side frame 22 so as to cover the outside of the side frame 22. FIG.

As shown in FIG. 2, five side guides 51 are attached to the left and right side frames 22, respectively.

7 and 9, each side guide 51 has a base portion 52 attached to the rear end surface 42a of the rear wall 42 of the side frame 22 and an inclined guide portion 53 integrated with the outer portion of the base portion 52. and a flange portion 54 integrated with the rear end portion of the inclined guide portion 53 . The inclined guide portion 53 protrudes rearward from the body at an inclination angle θ toward the vehicle width direction inner side from the vehicle width direction outside portion of the base portion 52 . The flange portion 54 protrudes inward in the vehicle width direction from the rear end portion of the inclined guide portion 53 and is substantially parallel to the base portion 52 . The inclination angle θ of the inclined guide portion 53 is about 15°.

As shown in FIG. 5, a fastening piece 55 is provided on the base portion 52 of the side guide 51 . The fastening piece 55 protrudes longitudinally outward from the end of the base portion 52 more than the inclined guide portion 53 , and the fastening piece 55 is provided with a fastening hole 56 . The projection length L of the fastening piece 55 is equal to or shorter than half the distance M between the outer surfaces of the two support plates 29 . As a result, the fastening pieces 55 of the two side guides 51 arranged in series on both longitudinal sides of the body-side hinge 26 are arranged between the mounting plate 28 of the body-side hinge 26 and the side frame 22 . That is, two side guides 51 adjacent to each other via the body side hinge 26 are screwed together with one body side hinge 26 .

Therefore, as shown in FIG. 11, bolts 57 are screwed to nuts 58 through fastening holes 56 of fastening pieces 55 of side guides 51 and mounting holes 32 of mounting plate 28 of body-side hinge 26. As a result, the side guides 51 and the body-side hinges 26 are fastened together to the rear wall 42 of the side frame 22 . That is, the body-side hinge 26 is fastened to the side frame 22 by two bolts 57 that pass through the mounting holes 32, and is secured to the side guide by bolts 57 that pass through the mounting holes 32 and the fastening holes 56, respectively. 51 is fastened to the side frame 22 . The nut 58 is pre-welded to the rear wall 42 of the side frame 22 .

In this way, the two bolts 57 for attaching the body-side hinge 26 to the rear wall 42 of the side frame 22 forming the rear end of the body are used to connect the two side hinges 26 arranged at both ends in the longitudinal direction of the body-side hinge 26 . Both guides 51 are fastened to the side frame 22 . As a result, compared to the case where they are fastened with separate screw members, the screwing work for the body side hinge 26 and the side guide 51 can be carried out simultaneously, and these screwing work can be carried out in a short period of time. , the efficiency of assembling the truck body can be improved. Further, since the base 52 is pressed by the mounting plate 28, the base 52 is pressed over a wider range than when pressed by the bolt head alone. As a result, the side guides 51 can be more securely fastened to the side frames 22 .

Moreover, the mounting plate 28 of the body-side hinge 26 is provided with the pressing end portion 31, and when the body-side hinge 26 and the side guide 51 are tightened together, the pressing end portion 31 is attached to the base portion 52 of the side guide 51. Since they are overlapped, the mounting strength of the side guides 51 can be increased by the body-side hinges 26 .

As shown in FIG. 7A, the inclined guide portion 53 protrudes rearward of the body while being inclined inward in the vehicle width direction from an edge E1 on the front end side of the body toward an edge E2 on the rear end side of the body. Therefore, when the air flowing along the left and right side walls 18 of the body passes through the side walls 18 while the truck is running, the air that has passed is guided along the inclined guide portions 53 and flows inward in the vehicle width direction to the rear of the body. sent out as As a result, the negative pressure phenomenon generated behind the body can be sufficiently suppressed, and the air resistance applied to the body during running can be reduced.

The inclined surface 43a of the inclined wall 43 forming the side surface of the rear end portion of the side wall 18 of the body is inclined inward in the vehicle width direction from the edge E3 on the front end side of the body toward the edge E1 of the inclined guide portion 53. The surface 43 a continues to the inclined surface 53 a of the inclined guide portion 53 . Therefore, the air that adheres to the inclined guide portion 53 and is sent inward in the vehicle width direction to the rear of the body when the truck is running is in the stage before reaching the inclined guide portion 53, and the inclined wall at the rear end portion of the side wall 18. 43. Then, after being guided, it reaches the inclined guide portion 53 . As a result, the amount of air sent to the rear of the body increases without separating from the inclined surfaces 43a, 53a when the truck is running, and the negative pressure phenomenon generated behind the body can be more efficiently suppressed. The inclination angle of the inclined wall 43 is also substantially the same as the inclination angle θ of the inclined guide portion 53 .

As shown in FIG. 7A, when the width dimension of the inclined guide portion 53 in the running direction is N and the similar width dimension of the inclined wall 43 is P, the entirety of the inclined guide portion 53 and the inclined wall 43 is The width dimension of the inclined surface of is N+P.

If the length of protrusion of the inclined guide portion 53 from the rear end surface of the side wall 18 is increased to increase the width dimension N of the inclined guide portion 53 in the running direction during running, the width dimension of the inclined guide portion 53 is reduced to the width of the inclined wall 43 . can be a length including the width dimension P of . However, if the projection length of the inclined guide portion 53 is increased, the side surface of the rear door 24 on the opening/closing center side interferes with the rear end portion of the side guide 51 when the rear door 24 is opened and closed. On the other hand, if the continuous inclined surfaces 43a, 53a are formed by the inclined wall 43 and the inclined guide portion 53, even if the width dimension N of the inclined guide portion 53 is shortened, the continuous inclined surfaces can be lengthened. While avoiding interference between the rear door 24 and the side guides 51 when the door 24 is opened and closed, the phenomenon of negative pressure generated behind the body can be suppressed.

The support pin 39 for connecting the door-side hinge 25 to the body-side hinge 26 to rotatably support the door-side hinge 25 is attached to the inclined guide portion 53 of the side guide 51 as shown in FIG. 7(A). are arranged on the outer side of the vehicle width direction. That is, the inclined guide portion 53 is arranged inside the support pin 39 in the vehicle width direction. As a result, the rear door 24 can be moved within a range of about 270 degrees from the state where the rear door 24 is closed as shown in FIG. 9(A) to the state where the rear door 24 is fully opened as shown in FIG. 9(B). can be opened and closed. As shown in FIG. 9(B), by opening the rear door 24 to a position along the side wall 18, it is possible to carry out loading and unloading work smoothly from the rear end of the body.

As shown in FIG. 2, four door-side hinges 25 are attached to each rear door 24, and four body-side hinges 26 are attached to the left and right side frames 22 corresponding to the door-side hinges 25, respectively. installed. The body side hinge 26 attached to the right side frame 22 in FIG. 2 has the pin support hole 33 directed to the right side as shown in FIG. On the other hand, the body side hinge 26 attached to the left side frame 22 is turned upside down from the state shown in FIG. 5 so that the pin support hole 33 faces leftward.

The side guides 51 arranged between the respective body-side hinges 26 have the same shape. On the other hand, the side guide 51 arranged above the uppermost body-side hinge 26 is indicated by (a) in FIG. shorter than the guide 51; The side guide 51(a) has a lower end portion fastened by a bolt 57 screwed to a nut 58, and an upper end portion fastened to the upper frame 23 by a bolt 57a screwed to a nut 58a.

The side guide 51 arranged below the lowermost body-side hinge 26 is indicated by (b) in FIG. 13, and this side guide 51(b) is the shortest with respect to the other side guides. The side guide 51 (B) has an upper end fastened by a bolt 57 screwed to a nut 58 and a lower end fastened to the side frame 22 by a bolt 57b screwed to a nut 58b.

As shown in FIG. 12 , the upper frame 23 is attached to the upper ends of the pillars 45 of the side frames 22 . The upper frame 23 has a channel member 61 having a U-shaped cross section, and a mounting plate 62 is fixed to the channel member 61 . Thus, the upper frame 23 has the channel member 61 and the mounting plate 62, and constitutes the ceiling wall 19 shown in FIG.

An upper guide 63 is attached to the channel member 61 and the mounting plate 62 that constitute the ceiling wall 19, as shown in FIG. 7(B). The upper guide 63 has an L-shaped base portion 64 that extends in the vehicle width direction and is attached to the ceiling wall 19, and an inclined guide portion 65 that projects downward from the upper side of the base portion 64 toward the rear of the body. ing. The base portion 64 is welded at the contact portion of the mounting plate 62 , and the inclined guide portion 65 is welded at the contact portion of the channel member 61 . Although the upper guide 63 is formed of one member in the illustration, it may be formed of a plurality of members.

8A is a sectional view showing a modification of the upper guide 63 shown in FIG. 7B, and FIG. 8B shows another modification of the upper guide 63 shown in FIG. 7B. It is a sectional view showing.

The upper guide 63 of FIG. 8(A) has a base portion 64a having a part of the inclined guide portion and an inclined guide portion 65a. are spliced. FIG. 8(B) The upper guide 63 has a base portion 64b provided with a part of the inclined guide portion and an inclined guide portion 65b. 65b is joined to the channel member 61 by a fastener 67. As shown in FIG. In this way, the upper guide 63 may be made up of a plurality of members.

When the air flowing along the ceiling wall 19 of the body passes through the ceiling wall 19 while the truck is running, the upper guide 63 is sent downward to the rear of the body by flowing along the inclined guide portion 65. - 特許庁As a result, not only the side guides 51 but also the upper guides 63 can suppress the phenomenon of negative pressure generated behind the body, and the air resistance applied to the body during running can be reduced. A width dimension Q of the inclined guide portion 65 of the upper guide 63 in the traveling direction is set equal to a total width dimension N+P of the inclined guide portion 53 of the side guide 51 and the inclined wall 43 of the side frame 22 . That is, the width dimension Q of the inclined guide portion 65 is the width including the inclined guide portion 53 of the side guide 51 and the inclined wall 43 formed at the rear end portion of the side wall 18 . In this way, the upper guide 63 also has the inclined guide portion 65 in the portion that constitutes the upper frame 23 .

As shown in FIG. 2 , a cover 66 covers the intersection of the end of the uppermost side guide 51 and the end of the upper guide 63 .

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example, the present invention has been described with reference to the case where the present invention is applied to the wing body 11, but the rear structure of the truck body of the present invention can be applied to any truck body having a rotatably mounted rear door. The present invention is not limited to wing bodies, and can be applied to van bodies, swap bodies, and other types of truck bodies. When the present invention is applied to the rear structure of a van body, the body-side hinge 26 is attached to the rear end surface of the side wall integrally provided on the side surface of the body.

10 Truck 11 Wing Body 15 Rear Wall 18 Side Wall 19 Ceiling Wall 20 Luggage Compartment 22 Side Frame 23 Upper Frame 24 Rear Door 25 Door Side Hinge 26 Body Side Hinge 28 Mounting Plate 29 Supporting Plate 31 Pressing Edge 32 Mounting Hole 33 Pin Support Hole 39 Support pin 42 Rear wall 42a Rear end surface 43 Inclined wall 43a Inclined surface 45 Column 51 Side guide 52 Base 53 Inclined guide 53a Inclined surface 54 Flange 55 Fastening piece 56 Fastening hole 57 Bolt 58 Nut 61 Channel member 62 Mounting plate 63 Upper Guide 64 Base 65 Inclined guide portion

Claims (7)

A rear structure of a truck body having left and right side walls and a ceiling wall, and having a rear door rotatably mounted thereon,
a plurality of body-side hinges comprising two support plates to which support pins are attached for supporting the door-side hinge fixed to the rear door, and a mounting plate fastened to the rear end surface of the side wall;
a plurality of side guides including a base attached to the rear end surface of the side wall and an inclined guide portion inclined inward in the vehicle width direction from the rear end surface and protruding rearward of the body;
a fastening piece provided on the base portion of the side guide and arranged between the mounting plate of the body-side hinge and the rear end surface of the side wall;
a bolt passing through a fastening hole provided in the fastening piece and a mounting hole provided in the mounting plate to fasten the side guide and the body-side hinge together to the side wall;
a rear structure of a truck body having a The rear structure of the truck body according to claim 1,
An inclined wall having an inclined surface connected to the inclined guide part is formed at the rear end of the side wall, and the air flowing along the side wall during running is sent out to the rear of the body by the inclined wall and the inclined guide part, Rear structure of a truck body. 3. In the truck body rear structure according to claim 1 or 2,
A rear structure of a truck body, wherein the mounting plate is provided with two mounting holes overlapping with fastening holes formed in the fastening pieces of the two side guides adjacent to each other via the body-side hinge. In the truck body rear structure according to any one of claims 1 to 3,
A rear structure of a truck body, wherein the mounting plate is provided with a pressing end projecting from the fastening piece to the base and pressing the base. In the truck body rear structure according to any one of claims 1 to 4,
The rear portion structure of the truck body, wherein the inclined guide portion is arranged inside the support pin in the vehicle width direction. In the truck body rear structure according to any one of claims 1 to 5,
A rear structure of a truck body having a base attached to the ceiling wall and an upper guide with an inclined guide portion inclined downward from the base. In the rear structure of the truck body according to claim 6,
The slanted guide portion of the upper guide has a width including the slanted guide portion of the side guide and the slanted wall formed at the rear end portion of the side wall.

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