JP6279378B2 - Roof spoiler - Google Patents

Description

  The present invention relates to a roof spoiler attached to a roof surface of a cab.

  2. Description of the Related Art Conventionally, in a vehicle having a cab and a loading platform higher than the cab, a technique for reducing traveling resistance caused by traveling wind by reducing a step between the cab and the loading platform is known. For example, in Patent Document 1, in a vehicle having a high roof, an air guide surface that is inclined toward the front of the cab and extends along the width direction of the cab is formed. A technique for reducing traveling resistance caused by traveling wind by guiding upward is disclosed. The air guide surface is embodied by, for example, one side surface of a roof spoiler extending in the width direction of the cab.

JP 2004-42784 A

  By the way, rainwater flowing from the rear of the roof spoiler toward the front of the cab is blocked by the roof spoiler. The blocked rainwater flows toward the side of the cab along the roof spoiler and then dripped onto the side of the cab. This dripping rainwater may hinder passengers getting on and off near the entrance.

  These problems are not limited to cabs that have a roof mounted on the roof spoiler, but are cabs that have a roof surface that is set lower than the high roof, or cabs that have the upper surface of the wind deflector set as the roof surface. Also common.

  An object of this invention is to provide the roof spoiler which suppresses dripping of the rainwater in the vicinity of a boarding / alighting gate.

  A roof spoiler that solves the above-described problem is a roof spoiler that is supported by a roof surface of a cab and extends along the width direction of the cab, and has a support surface that is supported by the roof surface. A plurality of legs that are arranged with gaps therebetween in the direction, the outer legs located at both ends in the longitudinal direction, and the inner legs sandwiched between the outer legs, and the support An air guide surface that is inclined with respect to a surface, and extends along the longitudinal direction and is supported by the plurality of leg portions, each of the plurality of leg portions including the cab. The front surface has a shape in which the air guide surface is extended from the air guide surface to the support surface.

  According to the above configuration, the roof spoiler has a plurality of gaps between the leg portions adjacent to each other, so that rainwater that is blocked by the roof spoiler and flows toward the side of the cab is reduced. As a result, since the rainwater itself dripping at the side of the cab is reduced, the rainwater dripping near the entrance is suppressed.

  In the roof spoiler, the outer leg is located on the side opposite to the front surface, and the width of the gap between the inner leg located next to the outer leg and the outer leg is directed to the opposite side. It is preferable to have a widened portion to be enlarged.

  According to the said structure, the width | variety of the clearance gap between the inner side leg part located next to an outer side leg part and an outer side leg part is large toward the back of a cab. Thereby, rainwater blocked by the roof spoiler and flowing toward the side of the cab easily flows into the gap between the inner leg portion and the outer leg portion located next to the outer leg portion. As a result, dripping of rainwater near the entrance is further suppressed.

In the roof spoiler, it is preferable that each of the plurality of leg portions has an attachment portion for attaching the roof spoiler to the cab.
With the above configuration, the roof spoiler is attached to the cab at each of the leg portions.

  In the roof spoiler, the plurality of leg portions include a first leg portion where the attachment portion is located near the front of the cab, and a second portion where the attachment portion is located near the rear of the cab. A leg, and the leg located next to the first leg includes the second leg, and the leg located next to the second leg, A first leg may be included.

According to the above configuration, it is possible to suppress the mounting position of the roof spoiler with respect to the cab from being biased toward the front side of the cab or the rear side of the cab.
In the roof spoiler, the inner leg portion is spaced from the roof surface at a portion opposite to the front surface, and a gap between the two leg portions located next to the inner leg portion and the inner leg portion. It is preferable to have a step which makes the two communicate with each other.

  According to the above configuration, the contact area between the rainwater and the leg that is blocked by the roof spoiler and flows toward the side of the cab is increased by a step at the rear of the leg. As a result, since the momentum when the rainwater separates from the leg portion is weakened, the rainwater easily flows into the gap between the leg portions. As a result, dripping of rainwater near the entrance is further suppressed.

It is a perspective view showing a perspective structure of a vehicle carrying a roof spoiler in one embodiment. It is a perspective view which shows the perspective structure when a roof spoiler is seen from the upper surface side. It is a perspective view which shows the perspective structure when a roof spoiler is seen from the bottom face side. It is a side view which shows the side structure of a roof spoiler. It is a partial front view which shows a part of front structure of a roof spoiler. It is a perspective view for demonstrating an example of the attachment method of a roof spoiler, (a) is a figure when the roof part is seen from the upper side, (b) is a figure when the roof part is seen from the lower side. It is the enlarged view which expanded the part enclosed with the dashed-dotted line 7 shown by FIG.6 (b), Comprising: It is a figure which shows the state with which the buffer material was attached to the 1st support surface, and the sealing material was attached to the 2nd support surface. . It is sectional drawing which shows an example of the attachment structure of a roof spoiler. It is the enlarged view which expanded the part applicable to the part enclosed with the dashed-dotted line 7 shown by FIG.6 (b), Comprising: It is a figure which shows the state by which the stud bolt was attached to the attaching part. It is sectional drawing which shows an example of the attachment structure of a roof spoiler. It is sectional drawing which shows an example of the attachment structure of a roof spoiler. It is a figure which shows typically the flow of the rain water around a roof spoiler. It is a perspective view which shows an example of the inner leg part in a modification. It is a perspective view which shows an example of the inner leg part in a modification.

With reference to FIGS. 1-12, the roof spoiler in one Embodiment is demonstrated.
As shown in FIG. 1, the roof spoiler 20 is applied to a vehicle having a cab 10 provided with a driver's seat and the like, and a loading platform 11 located behind the cab 10 and higher than the cab 10. The roof spoiler 20 is attached to the roof surface 10 a of the cab 10 in a state where the longitudinal direction is set along the width direction of the cab 10. The roof surface 10a is a surface located above the driver's seat and is a surface constituting a part of the outer surface of the cab 10. Specifically, as shown in FIG. 1, when the cab 10 includes the cab body 12 and the high roof 13, the upper surface of the roof portion 13a of the high roof 13 is set as the roof surface 10a. When the cab 10 is composed of only the cab body 12, the upper surface of the cab body 12 is set to the roof surface 10a. When the wind deflector is attached to the cab body 12, the upper surface of the wind deflector is set as the roof surface 10a.

  As shown in FIG. 2, the roof spoiler 20 is plane-symmetric with respect to a virtual plane that is orthogonal to the longitudinal direction and is located at the center in the longitudinal direction. The roof spoiler 20 includes a wind guide surface 21 that faces the front of the cab 10 and extends continuously in the longitudinal direction. The air guide surface 21 is a surface that is inclined with respect to the roof surface 10a so that the traveling air is guided upward of the loading platform. The air guide surface 21 is provided with three protrusions 22 extending along the inclination of the air guide surface 21 at equal intervals in the longitudinal direction. Of the three ridges, the ridge 22 located in the middle is located at the center of the roof spoiler 20 in the longitudinal direction. The roof spoiler 20 is a surface facing the rear of the cab 10 and includes a rear rear surface 23 that extends continuously in the longitudinal direction.

  The roof spoiler 20 includes six legs 25 that support the air guide surface 21 and the rear back surface 23. The six leg portions 25 are arranged at intervals along the longitudinal direction, and the leg portions 25 adjacent to each other form a gap 26. Of the six legs 25, the legs 25 positioned at both ends of the roof spoiler 20 in the longitudinal direction are the outer legs 25E, and the legs 25 sandwiched between the outer legs 25E are the inner legs 25M. Each leg 25 has a support surface 27 supported by the roof surface 10 a, a front surface 28 that faces the front of the cab 10, and a rear surface 29 that faces the rear of the cab 10.

  The front surface 28 of each leg 25 is a surface that is continuous with the air guide surface 21 and has a shape in which the air guide surface 21 is extended to a position where it is connected to the support surface 27. It has a function. The rear surface 29 of each leg 25 is a surface that is continuous with the rear surface 23 and has a shape in which the rear surface 23 is extended to a position where it is connected to the support surface 27.

  As shown in FIG. 3, each leg portion 25 has a first support surface 27 a along the outer peripheral edge of the bottom surface of the leg portion 25 as a support surface 27, and a circular shape positioned inside the first support surface 27 a. And a second support surface 27b. An attachment portion 30 for attaching the roof spoiler 20 to the cab 10 is provided at the central portion of the second support surface 27b. The attachment portion 30 is an insert nut embedded in the leg portion 25. The roof spoiler 20 is fixed to the cab 10 by a fastening member having an insert nut as one of the components.

  Each of the six leg portions 25 includes a first leg portion in which the attachment portion 30 is located at a position on the front side of the cab 10 or a second leg portion in which the attachment portion 30 is located at a position on the rear side of the cab 10. It corresponds to either. Of the six legs 25, two outer legs 25E and two inner legs 25M located closer to the center in the longitudinal direction among the inner legs 25M, these legs 25 are the first legs Part. On the other hand, the remaining two inner legs 25M are second legs. That is, one of the legs located next to the first leg is the second leg, and one of the legs located next to the second leg is the first leg. is there.

  Each of the outer leg portions 25 </ b> E has an inner side surface 31 that is a surface located on the center side of the roof spoiler 20 in the longitudinal direction as a surface that forms the gap 26. The inner side surface 31 has a widened portion 32 that enlarges the gap 26 with the inner leg portion 25 </ b> M located next to the rear side portion of the cab 10 in the longitudinal direction. The inner side surface 31 has a shape that curves so that the width of the gap 26 in the longitudinal direction becomes narrower at a portion farther from the support surface 27 including the widened portion 32.

  The inner leg portion 25M has an inner side surface 33 and an outer side surface 34 as surfaces forming the gap 26. The inner side surface 33 is a surface located at a position closer to the center of the roof spoiler 20 in the longitudinal direction. The outer side surface 34 is a surface located on the opposite side of the inner side surface 33. Further, the roof spoiler 20 has a facing surface 35 that is a surface that is substantially parallel to the support surface 27 and that faces the roof surface 10 a as a surface that forms the gap 26. The opposing surface 35 connects the leg portions 25 adjacent to each other.

  As shown in FIG. 4, the six leg portions 25 are such that the edge formed by the first support surface 27 a and the front surface 28 is located on the front side of the cab 10 as the leg portion 25 is located closer to the center in the longitudinal direction. To do. Therefore, the air guide surface 21 is slightly curved so that the portion closer to the center in the longitudinal direction projects toward the front of the cab 10.

  As shown in FIG. 5, the inner side surface 33 of the inner leg portion 25 </ b> M has a shape that curves so as to narrow the width of the gap 26 in the longitudinal direction at a portion farther from the support surface 27. The outer side surface 34 of the inner leg portion 25M has a shape that curves more gently than the inner side surface 33 so that the portion farther from the support surface 27 narrows the width of the gap 26 in the longitudinal direction. The curvature of the outer side surface 34 is gentler as the inner leg portion 25M is closer to the outer leg portion 25E.

  Further, the height H from the roof surface 10a is determined based on the results of various experiments and simulations. For example, the height H is comprehensively determined based on the noise caused by the traveling wind passing through the gap 26, the change in running resistance caused by the traveling wind passing through the gap 26, and the clogging of foreign matter in the gap 26. The The height H is preferably 10 mm or more, and more preferably 15 mm or more. Further, the height H is preferably 30 mm or less, and more preferably 25 mm or less. The height H is most preferably about 20 mm.

With reference to FIGS. 6-8, an example of the attachment method of the roof spoiler 20 is demonstrated.
6A and 6B, a part of the roof part 13a of the high roof 13 has a mounting hole penetrating the roof part 13a at a position corresponding to the mounting part 30 of the roof spoiler 20. 37 is formed.

  As shown in FIG. 7, an elastic cushioning material 38 is bonded to each leg portion 25 of the roof spoiler 20 along the outer peripheral edge portion of the first support surface 27 a and surrounds the attachment portion 30. The elastic sealing material 39 is bonded to the second support surface 27b.

  Next, the roof spoiler 20 is placed on the roof surface 10a, and the roof spoiler 20 is positioned with respect to the roof surface 10a so that one attachment hole 37 faces each of the attachment portions 30.

  And as FIG. 8 shows, the volt | bolt 45 is fastened with respect to each attaching part 30 from the indoor side of the cab 10. As shown in FIG. A washer 43 and a collar 42 are assembled to the bolt 45 as necessary.

  Thus, in the roof spoiler 20, the outer peripheral edge portion of the support surface 27 of each leg portion 25 is supported by the roof surface 10a via the cushioning material 38, and the periphery of the mounting hole 37 is sealed by the sealing material 39. To be attached to the cab 10.

With reference to FIGS. 9-11, the other example of the attachment method of the roof spoiler 20 is demonstrated.
As shown in FIG. 9, in this other example, the stud bolt 40 is attached to the attachment portion 30 in each of the two inner legs 25 </ b> M that are the second legs among the six legs 25. . The stud bolt 40 attached to the attachment portion 30 is inserted into the attachment hole 37 corresponding to the attachment portion 30, whereby the roof spoiler 20 is positioned with respect to the roof surface 10 a. That is, the stud bolt 40 functions as a reference for positioning the roof spoiler 20 with respect to the roof surface 10a. Thereby, the other attachment part 30 is arrange | positioned in the position facing the attachment hole 37 corresponding to the said attachment part 30 concerned. Then, as shown in FIG. 8, the bolt 45 is fastened to the attachment portion 30 to which the stud bolt 40 is not attached from the indoor side of the cab 10.

  As shown in FIG. 10, when the fastening with the bolt 45 is completed, the stud bolt 40 remains inserted through the attachment hole 37 without being attached with a nut. In another example of this attachment method, the attachment of the roof spoiler 20 to the roof surface 10 a is completed by fastening the bolts 45. In such a configuration, the mounting hole 37 through which the stud bolt 40 is inserted preferably has a smaller diameter than the mounting hole 37 through which the bolt 45 is inserted.

  As shown in FIG. 11, the stud bolt 40 may be fastened by a nut 41 from the indoor side of the cab 10. At this time, a collar 42 and a washer 43 may be assembled to the stud bolt 40 as necessary.

  In the mounting method using the stud bolt 40, the two leg portions 25 to which the stud bolt 40 is attached can be fastened by fastening members including the mounting portion 30 and the stud bolt 40 as components in all the leg portions 25. May be any leg 25. On the other hand, for example, when there is a leg portion 25 that is unnecessary or difficult to be fastened by a fastening member, the stud bolt 40 is preferably attached to the leg portion 25.

The operation of the roof spoiler 20 will be described with reference to FIG. In FIG. 12, a part of the outer peripheral edge of the first support surface 27a is indicated by a dotted line, and a typical rainwater flow is indicated by a solid arrow.
As shown in FIG. 12, the roof spoiler 20 described above has a plurality of gaps 26 formed between the roof surface 10a and a plurality of legs 25 arranged in the longitudinal direction. Therefore, rainwater flowing from the rear of the roof spoiler 20 toward the front of the cab 10 flows to the front of the roof spoiler 20 through the gap 26. As a result, the amount of rainwater that is blocked by the roof spoiler 20 and flows to the side of the cab 10 is reduced, so that dripping of rainwater near the entrance is suppressed.

  The outer leg portion 25E includes a widened portion 32 on the inner side surface 31. Therefore, the first support surface 27a of the outer leg portion 25E expands to the side of the cab 10 on the rear side of the cab 10, so that rainwater flowing into the gap 26 formed by the outer leg portion 25E increases. Further, even if rainwater blocked by the inner leg portion 25M flows toward the side of the cab 10, the probability that the rainwater flows into the gap 26 is increased. As a result, dripping of rainwater near the entrance is further suppressed.

  Each of the plurality of leg portions 25 is provided with an attachment portion 30 for attaching the roof spoiler 20 to the cab 10. Therefore, it is possible to attach the roof spoiler 20 to the cab 10 with each leg portion 25.

  In the six legs 25, one of the legs located next to the first leg is the second leg, and one of the legs located next to the second leg is the first leg. It is. Therefore, it is possible to prevent the position where the roof spoiler 20 can be attached to the roof surface 10 a from being biased toward the front side of the cab 10 or the rear side of the cab 10. As a result, the rattling of the roof spoiler 20 is effectively suppressed.

According to the above embodiment, the following effects can be obtained.
(1) Since the roof spoiler 20 has a plurality of gaps 26 arranged in the longitudinal direction, dripping of rainwater in the vicinity of the entrance / exit is suppressed.

(2) The outer leg portion 25 </ b> E has a widened portion 32 on the inner side surface 31. Thereby, dripping of rainwater in the vicinity of the entrance / exit is further suppressed.
(3) Since each leg portion 25 has the attachment portion 30, the roof spoiler 20 can be attached to the cab 10 by each leg portion 25.

(4) Moreover, when positioning using the stud bolt 40, the freedom degree regarding selection of the attaching part 30 which attaches the stud bolt 40 improves.
(5) Since the roof spoiler 20 has the first leg portion and the second leg portion, the mounting position of the roof spoiler 20 with respect to the roof surface 10 a is on the front side of the cab 10 or on the rear side of the cab 10. Unbiased is suppressed.

In addition, the said embodiment can also be suitably changed and implemented as follows.
As shown in FIG. 13, the inner leg portion 25M has a step 50 that separates the portion on the rear surface 29 side from the roof surface 10a and communicates the two gaps 26 sandwiching the inner leg portion 25M with each other. Also good. According to such a configuration, the contact area between the inner leg portion 25M and the rainwater blocked by the inner leg portion 25M is increased, so that the contact force between the rainwater and the inner leg portion 25M is increased. For this reason, the momentum of rainwater when leaving the step 50 is weakened, and rainwater easily flows into the gap 26. As a result, dripping of rainwater near the entrance is further suppressed.

  As shown in FIG. 14, the inner leg portion 25M has a step 51 that enlarges the two gaps 26 sandwiching the inner leg portion 25M on the rear surface 29 side as a step that separates the portion on the rear surface 29 side from the roof surface 10a. You may have. According to such a configuration, rainwater blocked by the inner leg portion 25M can easily flow into the two gaps 26 sandwiching the inner leg portion 25M, so that dripping of rainwater in the vicinity of the entrance / exit is further suppressed.

In the roof spoiler 20, all of the plurality of leg portions 25 may be first leg portions, or all of the plurality of leg portions 25 may be second leg portions.
When the roof spoiler 20 has both the first leg portion and the second leg portion, three or more first leg portions may be arranged, or three or more second leg portions may be arranged. May be.

  -The attachment part 30 should just be what can attach the roof spoiler 20 to the roof surface 10a, and not only an insert nut but all may be an insert bolt. Moreover, the roof spoiler 20 may have an attachment portion that is an insert nut and an attachment portion that is an insert bolt.

The formation position of the attachment portion 30 is not limited to a position near the front of the cab 10 or a position near the rear of the cab 10, and can be appropriately changed according to, for example, the structure of the cab 10.
-The roof spoiler 20 should just have at least two leg parts 25 which have the attachment part 30 which can be fastened.

The widened portion 32 can be omitted on the inner side surface 31 of the outer leg portion 25E.
The roof spoiler 20 only needs to have two outer legs 25E and at least one inner leg 25M, and the number of legs 25 is not limited to six.

  DESCRIPTION OF SYMBOLS 10 ... Cab, 10a ... Roof surface, 11 ... Loading platform, 12 ... Cab main body, 13 ... High roof, 13a ... Roof part, 20 ... Roof spoiler, 21 ... Air guide surface, 22 ... Projection, 23 ... Rear back surface, 25 ... Leg, 25E ... outer leg, 25M ... inner leg, 26 ... gap, 27 ... support surface, 27a ... first support surface, 27b ... second support surface, 28 ... front surface, 29 ... rear surface, 30 ... attachment portion 31 ... Inner side surface, 32 ... Widened portion, 33 ... Inner side surface, 34 ... Outer side surface, 35 ... Opposing surface, 37 ... Mounting hole, 38 ... Buffer material, 39 ... Sealing material, 40 ... Stud bolt, 41 ... Nut, 42 ... collar, 43 ... washer, 45 ... bolt, 50, 51 ... step.

Claims (5)

A roof spoiler supported by the roof surface of the cab and extending along the width direction of the cab,
A plurality of legs having a support surface supported by the roof surface and arranged with a gap therebetween in the longitudinal direction of the roof spoiler, the outer legs and the outer legs located at both ends in the longitudinal direction A plurality of legs including inner legs sandwiched between;
An air guide surface inclined with respect to the support surface, the air guide surface extending along the longitudinal direction and supported by the plurality of legs, and
Each of the plurality of legs includes a front surface facing the front of the cab,
The front surface, have a said wind guide surface from the wind guide surface to the supporting surface is extended shape,
The outer leg has a widened portion at a portion opposite to the front surface to increase a width of a gap between the inner leg located next to the outer leg and the outer leg toward the opposite side. Having roof spoiler. Wherein each of the plurality of legs, a roof spoiler according to claim 1 having an attachment portion for attaching the roof spoiler relative to the cab. The plurality of legs are
A first leg portion where the attachment portion is located at a position closer to the front of the cab;
A second leg portion where the attachment portion is located at a position near the rear of the cab,
The leg located next to the first leg includes the second leg,
The roof spoiler according to claim 2 , wherein the first leg is included in the leg located next to the second leg. The inner leg is
A step that separates a portion opposite to the front surface from the roof surface and communicates a gap between the two leg portions and the inner leg portion that are located next to the inner leg portion. 4. The roof spoiler according to any one of 3 .   The height from the roof surface is set to 20 mm ± 10 mm with respect to the facing surface facing the roof surface with a gap.
  The roof spoiler as described in any one of Claims 1-4.

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