JP2019182065A - Roof structure for vehicle - Google Patents

Abstract

To prevent water from flowing down from an upper surface of a roof to a windshield.SOLUTION: A roof panel 10 includes: a roof front surface portion 11 extending upward and rearward continuously from an upper end portion 6a of a windshield 6; and a roof upper surface portion 12 extending rearward continuously from an upper rim 11a of the roof front surface portion 11 to cover a vehicle cabin 5 from above. A front end rim portion 12a of the roof upper surface portion 12 includes a portion of a first roof upper surface portion 14, a front water discharge groove 15, and a second roof upper surface portion 16. The first roof upper surface portion 14 is formed in a flat surface extending substantially horizontally rearward from the upper rim 11a of the roof front surface portion 11. The front water discharge groove 15 is recessed and extends along a rear rim 14a of the first roof upper surface portion 14 in vehicle width direction. The second roof upper surface portion 16 is formed in a flat surface extending continuously rearward and substantially horizontally from a rear end rim 18 of a rear wall surface portion 15b of the front water discharge groove 15 and is placed on the level lower than the first roof upper surface portion 14.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a vehicle roof structure.

  Patent Document 1 describes a vehicle roof structure. In the roof panel of this vehicle, one bead portion is formed in a straight line in the left-right direction, and is divided into a front tension surface and a rear tension surface. The front and rear positions of the bead portion substantially coincide with the center pillar of the vehicle, and the left and right ends of the bead portion reach the roof side rail. The bead portion has a cross-sectional shape that forms a concave groove toward the outside of the vehicle.

JP 2001-233243 A

  In the roof panel described in Patent Document 1, water droplets adhering to the tension surface in front of the bead portion of the roof panel in rainy weather or the like flow to the front of the vehicle during traveling or braking and flow down along the surface of the windshield. There is a possibility that.

  Therefore, an object of the present disclosure is to provide a vehicle roof structure capable of suppressing the flow of water from the upper surface of the roof to the windshield.

  In order to solve the above-described problem, the vehicle roof structure according to the first aspect of the present invention includes a roof front surface portion and a roof upper surface portion. The front surface of the roof extends continuously upward and rearward from the upper edge of the windshield of the vehicle. The roof upper surface portion continuously extends rearward from the upper end edge of the roof front portion and covers the vehicle compartment from above. The front edge portion of the roof upper surface portion includes a flat roof-shaped first roof upper surface portion extending substantially horizontally continuously from the upper edge of the roof front surface portion, and a vehicle width along the rear edge of the first roof upper surface portion. A groove-like drainage groove extending in the direction, and a second roof upper surface extending continuously rearward from the rear end edge of the drainage groove. The second roof upper surface portion is disposed at a lower height position than the first roof upper surface portion. The drainage groove portion extends in the vehicle width direction in a state of being recessed downward from the upper surface portion of the second roof.

  In the above configuration, the front end edge portion of the roof upper surface portion has a groove-like drainage groove portion extending in the vehicle width direction, so that when water droplets attached to the roof upper surface portion flow forward in the rain, etc., it flows into the drainage groove portion, It flows to one side or both sides of the top surface of the roof in the vehicle width direction. For this reason, the flow of water from the upper surface of the roof upper surface portion (the upper surface of the roof) to the windshield can be suppressed.

  In addition, the second roof upper surface portion is disposed at a position (height position) lower than the first roof upper surface portion. That is, since the first roof upper surface portion is disposed at a position (height position) higher than the second roof upper surface portion, even if water flows forward from the second roof upper surface portion over the drain groove portion, The outflow of water to the first roof upper surface portion side in front of the groove portion can be suppressed. For this reason, the flow of water from the upper surface of the roof upper surface portion to the windshield can be suppressed.

  Further, the front end edge of the roof upper surface has a flat first roof upper surface that extends substantially horizontally continuously from the upper edge of the roof front, and therefore, along the roof front when the vehicle is running. The traveling wind that flows upward and rearward is guided rearward substantially horizontally along the first roof upper surface from the upper end edge (top) of the roof front surface. For this reason, for example, unlike the case where the drainage groove is provided immediately after the upper edge of the roof front without providing the first roof upper surface, the traveling wind that flows upward and rearward along the roof front is The separation of the flow immediately after the top of the roof front portion when the top of the roof is exceeded can be suppressed. In this way, separation of the flow from the top surface of the roof from the top of the front surface of the roof to the rear is suppressed, and the traveling wind is guided substantially horizontally from the top of the front surface of the roof to the rear by the first roof top surface. Even if the flow is separated at the drainage groove part behind the roof upper surface part, the traveling wind can easily flow along the second roof upper surface part behind the drainage groove part, and the air resistance above the roof upper surface part is reduced. Can do.

  A second aspect of the present invention is the roof structure according to the first aspect, wherein the first roof upper surface portion and the drainage groove portion are continuous in the vehicle width direction between both ends in the vehicle width direction of the roof upper surface portion. Extend.

  In the above configuration, the drainage groove portion extends continuously in the vehicle width direction between both ends of the roof upper surface portion in the vehicle width direction. That is, since both ends of the drainage groove portion in the vehicle width direction are disposed at both ends of the roof upper surface portion in the vehicle width direction, water flowing out from both ends of the drainage groove portion in the vehicle width direction to the vehicle width direction outside It can be made to flow down from the both ends of the vehicle width direction along the pillar etc. of the windscreen outer side of a windshield. For this reason, the flow of water from the upper surface of the roof upper surface portion (the upper surface of the roof) to the windshield can be suppressed.

  In addition, since the first roof upper surface portion continuously extends in the vehicle width direction between both ends in the vehicle width direction of the roof upper surface portion, the entire area between both ends in the vehicle width direction of the front edge of the roof upper surface portion, The separation of the flow from the top of the roof front portion to the upper and rear can be suppressed, and the air resistance above the roof upper surface can be reduced.

  According to the present disclosure, the flow of water from the upper surface of the roof to the windshield can be suppressed.

It is a perspective view of the front part of the vehicle to which the roof structure concerning one embodiment of the present invention is applied. It is a schematic top view of a roof. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 2.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Moreover, in the following description, the left-right direction means the left-right direction with the vehicle facing forward.

  As shown in FIG. 1, a vehicle 1 to which a roof structure according to this embodiment is applied is a vehicle 1 such as a truck having a box-like cab 2 at a front end portion of the vehicle 1.

  The cab 2 includes a front panel 3, a pair of left and right side panels 4 (only the left side is shown in FIG. 1), a back panel (not shown), a floor panel (not shown), and a roof panel (roof) 10. And compartment 5 is defined inside. The front panel 3 includes a pair of left and right front pillars 8 extending in the vertical direction and a substantially rectangular windshield 6 disposed between the left and right front pillars 8, and extends along the vehicle width direction at the front end of the cab 2. Stand up. The left and right side panels 4 have a door opening 4a that can open the vehicle compartment 5 outward in the vehicle width direction, and doors 4b that close the door opening 4a so that the door opening 4a can be opened and closed. Stand up along the direction and face each other. Closed cross-section roof side rails 7 are formed at the upper ends of the left and right side panels 4 so as to extend along the front-rear direction and support both end edges in the vehicle width direction of the roof panel 10 from below (see FIG. 3). ). The back panel stands up along the vehicle width direction at the rear end of the cab 2 and faces the front panel 3. The floor panel crosses the vertical direction at the bottom of the cab 2. Roof panel 10 faces the floor panel at a position spaced upward from the floor panel. The front edge of the roof panel 10 is connected to the upper edge of the front panel 3, and the rear edge of the roof panel 10 is connected to the upper edge of the back panel. The part is connected to the roof side rails 7 of the left and right side panels 4.

  As shown in FIGS. 1 to 4, the roof panel 10 includes a roof front surface portion 11 extending continuously upward and rearward from the upper edge 6 a of the windshield 6, and a rear surface continuous from the upper edge 11 a of the roof front surface 11. And a roof upper surface portion 12 extending from the top to cover the vehicle compartment 5 from above.

  As shown in FIGS. 2 and 4, the roof front portion 11 is gently curved so as to bulge forward and upward in a side view of the vehicle 1, and moves upward and backward from the upper edge 6 a of the windshield 6. Extend. The upper end edge 11 a of the roof front portion 11 is a top portion (a portion disposed at the highest position) of the roof front portion 11 in the front view of the vehicle 1, and is above and behind the upper end edge portion 6 a of the windshield 6. It is arranged and extends along the vehicle width direction. A tangent to the upper edge 11a of the roof front portion 11 in a side view of the vehicle 1 is substantially horizontal. Both ends in the vehicle width direction of the front surface portion 11 of the roof are disposed on the outer side in the vehicle width direction than both ends in the vehicle width direction of the upper edge portion 6a of the windshield 6. The upper end edge 11 a of the roof front surface portion 11 is also the rear end edge of the roof front surface portion 11.

  As shown in FIGS. 2 and 3, a pair of left and right side drain grooves extending linearly across the front and back of the roof upper surface 12 in a state of being recessed downward at both ends in the vehicle width direction of the roof upper surface 12. 13a and 13b are formed. The left and right side drainage grooves 13a and 13b are respectively arranged on the outer side in the vehicle width direction from the outer ends on both sides in the vehicle width direction of the windshield 6, and when water (rain water or the like) flows into the groove, The inflowing water (rain water or the like) is guided forward or backward of the roof panel 10.

  As shown in FIGS. 2 and 4, the front edge 12 a of the roof upper surface 12 includes a first roof upper surface 14, a front drain groove (drainage groove) 15, and a part of the second roof upper surface 16 (front edge). Part).

  The first roof upper surface portion 14 is formed in a flat surface shape extending substantially horizontally rearward from the upper end edge 11a of the roof front surface portion 11. The first roof upper surface portion 14 is formed to be long in the vehicle width direction, and both ends of the first roof upper surface portion 14 in the vehicle width direction are continuous with the inner edge in the vehicle width direction of the left and right side drain grooves 13a and 13b. To do. That is, both ends of the first roof upper surface portion 14 in the vehicle width direction are disposed in the vicinity of both edges in the vehicle width direction of the roof upper surface portion 12, and the first roof upper surface portion 14 is the both ends of the roof upper surface portion 12 in the vehicle width direction. The part extends continuously in the vehicle width direction. The length of the first roof upper surface portion 14 in the front-rear direction is set to a very short length (for example, about 30 mm) with respect to the length of the roof upper surface portion 12 in the front-rear direction. The front end side of the first roof upper surface portion 14 is smoothly continuous with the upper end edge 11 a of the roof front surface portion 11.

  The front drainage groove 15 is a groove extending in the vehicle width direction along the rear edge 14a of the first roof upper surface 14 in a state of being recessed downward, and has a cross section having a front wall surface portion 15a and a rear wall surface portion 15b. It is formed in a substantially V shape. Both ends of the front drainage groove 15 in the vehicle width direction are continuous with the left and right side drainage grooves 13a and 13b, and the inside of the front drainage groove 15 communicates with the inside of the left and right side drainage grooves 13a and 13b. That is, the front drainage groove 15 extends continuously in the vehicle width direction between both ends of the roof upper surface portion 12 in the vehicle width direction. The front wall surface portion 15a extends from the rear edge 14a of the first roof upper surface portion 14 downward and rearward while being inclined with respect to the horizontal direction. The rear wall surface portion 15b extends from the rear edge of the front wall surface portion 15a (hereinafter referred to as the groove bottom portion 17) upward and rearward while being inclined with respect to the horizontal direction. The inclination angles of the front wall surface portion 15a and the rear wall surface portion 15b with respect to the horizontal direction are substantially the same angle. The rear end edge 18 of the rear wall surface portion 15b (the rear end edge 18 of the front drainage groove portion 15) is disposed below the first roof upper surface portion 14. The groove bottom portion 17 is disposed at a height position below the second roof upper surface portion 16.

  The second roof upper surface portion 16 is formed in a flat surface shape that extends substantially rearward from the rear end edge 18 of the rear wall surface portion 15b of the front drainage groove portion 15 and is substantially lower than the first roof upper surface portion 14. It is arranged in the position. That is, the front drainage groove portion 15 extends in the vehicle width direction in a state of being recessed below the first roof upper surface portion 14 and below the second roof upper surface portion 16. Both ends in the vehicle width direction of the second roof upper surface portion 16 are continuous with the inner end edges in the vehicle width direction of the left and right side drain grooves 13a and 13b. That is, both ends of the second roof upper surface portion 16 in the vehicle width direction are disposed in the vicinity of both ends of the roof upper surface portion 12 in the vehicle width direction, and the second roof upper surface portion 16 has both ends of the roof upper surface portion 12 in the vehicle width direction. The part extends continuously in the vehicle width direction. Further, the second roof upper surface portion 16 continuously extends rearward from the rear end edge 18 of the front drainage groove portion 15 to the rear end edge portion 12b (see FIG. 1) of the roof upper surface portion 12.

  In the roof panel 10 configured as described above, the front drainage groove portion 15 is provided at the front edge 12a of the roof upper surface portion 12, so that when water droplets attached to the roof upper surface portion 12 flow forward, It flows into the partial drainage groove 15 and flows from the front drainage groove 15 to the left and right side drainage grooves 13a and 13b on one side or both sides of the roof upper surface 12 in the vehicle width direction. For this reason, the flow of water from the upper surface of the roof upper surface portion 12 (the upper surface of the roof panel 10) to the windshield 6 can be suppressed.

  Both ends of the front drainage groove portion 15 in the vehicle width direction are continuous with the left and right side drainage groove portions 13a and 13b at both ends of the roof upper surface portion 12 in the vehicle width direction, and the left and right side drainage groove portions 13a and 13b are connected to the front side. Since the glass 6 is disposed on the outer side in the vehicle width direction from the outer ends on both sides in the vehicle width direction, the left and right side drain grooves 13a and 13b extend along the left and right front pillars 8 on the outer side in the vehicle width direction of the windshield 6. It can be made to flow down and the flow of water to the windshield 6 can be suppressed.

  Further, the second roof upper surface portion 16 is disposed at a position (height position) lower than the first roof upper surface portion 14. That is, since the first roof upper surface portion 14 is disposed at a position (height position) higher than the second roof upper surface portion 16, it will flow forward from the second roof upper surface portion 16 over the front drainage groove portion 15. Water hits the front wall surface portion 15 a in front of the front drainage groove portion 15. Thus, the water that flows forward from the second roof upper surface portion 16 beyond the front drainage groove portion 15 hits the front wall surface portion 15a in front of the front drainage groove portion 15, and therefore the second roof upper surface portion 16 side. The flow of water from the upper surface of the roof upper surface portion 12 to the windshield 6 can be suppressed.

  Therefore, according to this embodiment, the flow of water from the upper surface of the roof panel 10 to the windshield 6 can be suppressed.

  Further, the first roof upper surface portion 14 is formed in a flat surface shape extending substantially horizontally rearward from the upper end edge 11a of the roof front surface portion 11, and therefore flows upward and rearward along the roof front surface portion 11 when the vehicle 1 is traveling. The traveling wind is guided substantially horizontally rearward along the first roof upper surface portion 14 from the upper end edge 11 a (top portion) of the roof front surface portion 11. For this reason, for example, unlike the case where the front drainage groove portion 15 is provided immediately after the upper end edge 11a of the roof front surface portion 11 without providing the first roof upper surface portion 14, it flows upward and rearward along the roof front surface portion 11. The separation of the flow immediately after the top portion 11a of the roof front surface portion 11 when the traveling wind exceeds the top portion 11a of the roof front surface portion 11 can be suppressed. In this way, since the separation of the flow from the top portion 11a of the roof front surface portion 11 to the upper and rear is suppressed and the traveling wind is guided substantially horizontally from the top portion 11a of the roof front surface portion 11 to the rear by the first roof upper surface portion 14, Even if the flow is separated from the roof upper surface portion 12 at the front drainage groove portion 15 behind the first roof upper surface portion 14, the traveling wind easily flows along the second roof upper surface portion 16 behind the front drainage groove portion 15. The air resistance above the roof upper surface portion 12 can be reduced.

  Further, since the first roof upper surface portion 14 continuously extends in the vehicle width direction between both ends in the vehicle width direction of the roof upper surface portion 12, the distance between both ends in the vehicle width direction of the front edge 12 a of the roof upper surface portion 12. , It is possible to suppress the separation of the flow from the top portion 11a of the roof front surface portion 11 to the upper and rear sides, and to reduce the air resistance above the roof upper surface portion 12.

  In the present embodiment, the roof front surface portion 11 whose tangent to the upper end edge 11a of the roof front surface portion 11 in the side view of the vehicle 1 is substantially horizontal is provided, but the present invention is not limited to this. What is necessary is just the roof front-surface part 11 extended from the upper edge 6a to the upper back continuously.

  Moreover, in this embodiment, although the angle with respect to the horizontal direction of the front wall surface part 15a and the rear wall surface part 15b of the front part drain groove part 15 was mutually the same angle, it is not limited to this.

  Further, in the present embodiment, the front drainage groove portion 15 having a substantially V-shaped cross section is provided, but the cross-sectional shape of the front drainage groove portion 15 is not limited to the substantially V-shaped cross section. It may be.

  Further, in the present embodiment, the second roof upper surface portion 16 continuously extending from the rear end edge 18 of the front drainage groove portion 15 to the rear end edge portion 12b of the roof upper surface portion 12 is provided, but the present invention is not limited to this. Instead, the second roof upper surface portion 16 may be disposed at least at the front end edge portion 12a of the roof upper surface portion 12 and continuously extends rearward from the rear end edge 18 of the front drainage groove portion 15.

  In the present embodiment, the left and right side drain grooves 13a and 13b are provided at both ends in the vehicle width direction of the roof upper surface portion 12, but the left and right side drain grooves 13a and 13b may not be provided.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the content of the said embodiment, Of course, it can change suitably in the range which does not deviate from this invention. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, the roof structure according to the present disclosure may be applied to a vehicle (passenger car or the like) other than the vehicle 1 such as a truck having a box-like cab 2 at the front end portion of the vehicle 1.

1: Vehicle 5: Vehicle compartment 6: Windshield 6a: Upper edge of windshield 11: Roof front face 11a: Upper edge of roof front face 12: Roof upper face 12a: Front edge 14 of roof upper face: First Roof upper surface portion 14a: Rear edge of first roof upper surface portion 15: Front drain groove portion 16: Second roof upper surface portion 18: Rear edge of front drain groove portion

Claims (2)

A roof front portion extending continuously upward and rearward from the upper edge of the vehicle windshield;
A roof upper surface portion extending continuously from the upper edge of the roof front portion and covering the vehicle compartment from above,
A front end edge portion of the roof upper surface portion is formed on a flat first roof upper surface portion extending substantially horizontally rearward from the upper end edge of the roof front surface portion and a rear end edge of the first roof upper surface portion. A groove-like drainage groove extending along the vehicle width direction along the second roof upper surface extending continuously rearward from the rear edge of the drainage groove,
The second roof upper surface portion is disposed at a lower height position than the first roof upper surface portion,
The drainage groove portion extends in the vehicle width direction in a state of being recessed downward from the upper surface portion of the second roof. The roof structure according to claim 1,
The vehicle roof structure, wherein the first roof upper surface portion and the drainage groove portion continuously extend in the vehicle width direction between both ends in the vehicle width direction of the roof upper surface portion.

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