JP2018176797A - Vehicular variable roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular variable roof structure capable of improving a fuel consumption.SOLUTION: A wing 20 is provided on a roof 14. The wing 20 includes: an air inlet 22 opened toward the front of a vehicle; and an encapsulation space R2 that encapsulates air therein flowing from the air inlet 22. A flexible film 20M is deformed when a non flow-in state in which no air flows in the encapsulation space R2 changes to a flow-in state in which air flows in the encapsulation space R2, and becomes a wing shape that produces lift force.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a variable roof structure for a vehicle applied to the roof of a vehicle.

  Conventionally, various roof boxes mounted on the roof of a vehicle have been proposed. For example, Patent Documents 1 and 2 disclose a roof box whose volume can be changed in accordance with a load to be loaded and the like. By using such a roof box, it is possible to suppress the disturbance of the traveling wind caused by loading a load on the roof.

Japanese Patent Application Publication No. 2014-521544 Japanese Patent Application Laid-Open No. 2003-89329

  However, in Patent Documents 1 and 2, since the roof box is formed of a member that maintains the outer shape, the installation of the roof box causes an increase in weight, which may cause a reduction in fuel consumption. The present invention has been made in consideration of the above-mentioned facts, and it is an object of the present invention to provide a variable roof structure for a vehicle capable of improving fuel consumption.

  The variable roof structure for a vehicle according to claim 1 includes a roof provided above the vehicle, an air inflow portion provided on the roof and opening toward the front of the vehicle, and inflow from the air inflow portion The flexible membrane is deformed to generate a lift force by having an enclosed space for enclosing the air, and from the non-inflowing state where the air is not introduced into the enclosed space to the inflowing state where the air is introduced into the enclosed space And a wing portion that deforms into a wing shape.

  In the variable roof structure for a vehicle according to claim 1, when the vehicle travels, the traveling air flows from the air inflow portion into the enclosed space, and the wing portion changes into the inflow state from the non-inflowing state of the flexible membrane, The wings generate lift. As a result, the weight is reduced during traveling, and the fuel consumption is improved. In addition, since the flexible film is deformed to form the outer shape of the wing portion, the weight of the wing portion can be reduced, and the fuel consumption can be improved.

  The variable roof structure for a vehicle according to claim 2, wherein the wing shape is a reflect camber shape.

  As described above, by forming the reflecting camber-like wing portion, the attitude of the wing portion is stabilized, and the traveling air can be stably introduced into the enclosed space.

  In the variable roof structure for a vehicle according to claim 3, the flexible membrane is disposed along the upper surface of the roof while being separated from the roof to form a lower space, and the inside is a bag shape which is the enclosed space. ing.

  According to the variable roof structure for a vehicle of the third aspect, the wing portion can be easily formed by the flexible membrane. In addition, since the lower space is formed between the roof and the roof, the traveling wind flows under the wing portion, and lift can be easily obtained.

  In the variable roof structure for a vehicle according to a fourth aspect of the present invention, the flexible membrane is provided with a plurality of upper and lower connecting portions such that the distance in the vertical direction across the enclosed space does not exceed a predetermined length.

  According to the variable roof structure for a vehicle of the fourth aspect, in the air inflow state, the vertical connection maintains the distance in the vertical direction that straddles the enclosed space of the flexible membrane by the upper and lower connection portions to a predetermined length, It can be formed into

  The variable roof structure for a vehicle according to claim 5, wherein the wing portion has a base spaced apart from the roof and disposed along the upper surface of the roof, and the upper surface of the base is covered with the flexible membrane. It is

  According to the variable roof structure for a vehicle of the fifth aspect, the lower space can be easily configured by providing the pedestal. In addition, the load can be stably loaded on the pedestal.

  The variable roof structure for a vehicle according to claim 6 is provided with a side film covering the lower space between both ends in the vehicle width direction of the wing portion and the roof.

  According to the variable roof structure for a vehicle of the sixth aspect, the flow of air from the lower space to the upper portion of the wing can be suppressed by the side film, and the damping of the lift can be suppressed.

  In the variable roof structure for a vehicle according to claim 7, the wing portion can be shortened in the vehicle width direction.

  According to the variable roof structure for a vehicle of the seventh aspect, it is possible to reduce the air resistance by reducing the wing portion.

  As described above, the variable roof structure for a vehicle of the present invention can improve fuel efficiency.

1 is a side view of a vehicle to which a variable roof structure for a vehicle according to the present embodiment is applied. 1 is a top view of a vehicle to which a variable roof structure for a vehicle according to the present embodiment is applied. It is a front view (air inflow state to a wing part) of vehicles upper part where variable roof structure for vehicles concerning this embodiment was applied. It is a perspective view in the state before attachment of the wing part and pedestal of this embodiment. It is a front view (the non-air inflow state to a wing part, a folding state) of the vehicles upper part where the variable roof structure for vehicles concerning this embodiment was applied. (A) of the wing part of this embodiment is a figure which shows the air non-inflowing state to enclosed space, (B) is a figure which shows the air inflow state into enclosed space. (A) of the wing part of this embodiment is a figure which shows the state which the air inflow part turned upwards, (B) is a figure which shows the state which the air inflow part turned upwards.

  Hereinafter, a first embodiment of a variable roof structure for a vehicle to which the present invention is applied will be described with reference to the drawings. In addition, arrow UP suitably shown by each figure has shown the vehicle upper side, and arrow FR has shown the vehicle front. Moreover, the arrow W has shown the vehicle width direction.

  As shown in FIG. 1, the vehicle variable roof structure 10 of the present embodiment is a structure mounted on a vehicle 12. The vehicle variable roof structure 10 includes a roof 14, a support frame 16, a pedestal 18, and wings 20.

  The roof 14 is provided above the vehicle 12 and constitutes an outer plate of the vehicle 12. The support frame 16 is elongated in the vehicle width direction. Two support frames 16 are attached to the roof 14 at intervals in the front and back direction.

  A pedestal 18 is mounted on the support frame 16. The pedestal 18 is in the form of a tray as shown in FIG. 4 and has a bottom 18A and a side wall 18B. The pedestal 18 is disposed at the central portion in the vehicle width direction, and the length in the vehicle width direction is shorter than the length in the same direction of the roof 14. The bottom 18A is separated from the roof 14 by the support frame 16, and a lower space R1 is formed between the roof 14 and the bottom 18A. Inside the side wall 18B along the longitudinal direction of the vehicle, a mounting portion 18C for mounting a mounting margin 24A described later is formed. For example, a surface fastener can be used for the attachment portion 18C. The pedestal 18 can be formed of resin, metal or the like. The pedestal 18 is provided with a fixing member (not shown) for fixing the luggage to the pedestal 18 when the luggage is loaded.

  The wing portion 20 is formed into a bag shape formed by the flexible membrane 20M, and is disposed so as to cover the roof 14 as viewed from above as shown in FIG. The flexible film 20M is formed of a flexible material such as cloth or film of nylon fiber or polyethylene fiber that can be deformed by an internal pressure.

  The front of the wing portion 20 is open, and an air inflow portion 22 into which traveling wind flows in when the vehicle 12 travels is formed. An enclosed space R2 is formed inside the wing portion 20, and a portion other than the air inflow portion 22 is sealed so that the air flowing in from the air inflow portion 22 does not come backward.

  As shown in FIG. 1, the wing section 20 has a cross section in the front-rear direction that is shaped like a reflect camber. The reflect camber has a shape in which the rear is bent upward. As the reflect camber shape (or S-shaped camber shape), for example, the wing shape of Fauvel 14 adopted for an American tailless wing glider, which has a positive moment coefficient, can be used.

  As shown in FIG. 3, the wing portion 20 is elongated in the vehicle width direction as viewed from the front, and an opening 24 is formed at a position corresponding to the pedestal 18 at the center lower portion in the vehicle width direction. . The flexible film 20M is notched at the opening 24, and a strip-shaped mounting margin 24A is formed at the edge of the opening 24. The mounting margin 24A is joined to the mounting portion 18C formed on the side wall 18B of the pedestal 18, and the opening 24 is closed by the pedestal 18.

  A plurality of upper and lower connecting portions 26 are formed on the wing portion 20 at predetermined intervals in the vehicle width direction. The upper and lower connecting portions 26 are formed of the same film-like member as the flexible membrane 20M, and extend along the front-rear direction so as to cross the vertical direction of the enclosed space R2, and the upper and lower sides of the flexible membrane 20A. Are linked. In the upper and lower connecting parts 26, in the state where the traveling wind flows into the enclosed space R2, the interval between the parts facing each other in the upper and lower parts of the flexible membrane 20M is such that the shape of the wing part 20 becomes a desired reflect camber shape. It is set to a predetermined length. A communication hole 26A is formed in each of the upper and lower connecting portions 26 so as to communicate the enclosed space R2 adjacent in the vehicle width direction.

  A front side film 30 and a rear side film 32 are provided at an outer end (hereinafter referred to as a “wing width end 20E”) of the wing portion 20 in the vehicle width direction. The front side film 30 and the rear side film 32 are provided side by side in the wing width end portion 20E of the wing portion 20. The front side film 30 has a substantially triangular shape, one side of which is disposed along the front-rear direction and joined to the wing span end 20E, and the front attachment cord 30A is attached along the two sides of the triangle, It is pulled out. By fastening the front attachment cord 30A to the support frame 16, the front side film 30 is stretched so as to cover a part of the lower space R1. The rear side film 32 is also formed into a substantially triangular shape, one side of which is disposed along the front-rear direction and joined to the wing span end 20E, and the rear attachment cord 32A is attached along the two sides of the triangle. Have been pulled out. By fastening the rear attachment cord 32A to the support frame 16, the rear side film 32 is stretched so as to cover a part of the lower space R1.

  The wing portion 20 lengthens the front side membrane 30 by making the front attachment cord 30A long, and shortens the rear side membrane 32 by pulling and shortening the rear attachment cord 32A, and the air inflow portion 22 faces upward. It can be inclined as shown in FIG. 7 (A). Further, by pulling the front attachment cord 30A to shorten the front side film 30, and by lengthening the rear attachment cord 32A, the rear side film 32 can be made longer and inclined so that the air inflow portion 22 is directed downward. (See FIG. 7 (B)). Therefore, the inclination of the wing portion 20 can be easily adjusted by adjusting the lengths of the front attachment cord 30A and the rear attachment cord 32A. In this case, by attaching the mounting margin 24A at the edge of the opening 24 of the pedestal 18 and the wing portion 20 with play, the mounting margin 24A can follow the inclination.

  At the front edge and the rear edge of the wing portion 20, the flexible film 20M is folded back along the vehicle width direction of the wing portion 20 to form an annular front annular edge portion 20F and a rear annular edge portion 20R. There is. Ropes 28F and 28R are respectively inserted into the front annular edge 20F and the rear annular edge 20R. The ropes 28F and 28R are movable relative to the wings 20, and the wings 20 have a reduced length in the vehicle width direction by pulling the ropes 28F and 28R to collect the flexible membrane 20M in the center. And folded (see FIG. 5).

  Next, the operation of the present embodiment will be described.

  When loading a load on the vehicle 12, the load is inserted from the air inlet 22 and placed on the bottom 18A of the pedestal 18 and fixed to the pedestal 18 by a fixing member (not shown). Thus, the enclosed space R2 formed between the pedestal 18 and the flexible membrane 20M can be used as a luggage loading space.

  Since the air by the traveling wind does not flow into the enclosed space R2 when the vehicle 12 stops, as shown in FIG. 6A, the wing portion 20 is in the non-flow-in state where the air is released. When the vehicle 12 travels, air flows from the air inflow portion 22 into the enclosed space R2, the internal pressure of the enclosed space R2 is increased by the enclosed air, and the flexible membrane 20M is pushed and deformed from the inside, and the wing portion 20 is deformed. It is deformed into an airfoil (reflect camber shape) (see FIG. 6 (B)). The wing 20 generates lift.

  When the vehicle 12 of the present embodiment travels, lift is generated by the wing 20 being deformed into a wing shape as described above, so that the mass is partially canceled and reduced by the lift, and fuel consumption is improved. Further, since the wing portion 20 is formed of the flexible film 20M, the weight of the wing portion 20 can be reduced, and the fuel consumption can be improved.

  Further, since the wing portion 20 of the present embodiment is shaped like a reflect camber, even if a moment acts on the wing portion 20 so that the front side of the wing portion 20 falls, the wing portion 20 lifts the front side by the upper lower portion of the rear lower portion. A moment occurs. Therefore, the elevation angle of the wing portion 20 can be stably maintained.

  Further, in the present embodiment, since the lower space R1 is formed between the roof 14 and the wing portion 20, the traveling wind flows under the wing portion 20, and it becomes easy to generate lift.

  Further, in the present embodiment, the upper and lower connecting portions 26 are provided in the enclosed space R2 of the wing portion 20, and the upper side and the lower side of the flexible membrane 20M are connected, so the traveling wind flows into the enclosed space R2. In the state, the shape of the wing portion 20 can be easily formed in a reflect camber shape.

  Further, in the present embodiment, since the pedestal 18 is provided, the lower space R1 can be easily configured. In addition, the load can be stably loaded on the pedestal 18

  Further, in the present embodiment, since the front side film 30 and the rear side film 32 are provided to the wing portion 20, the flow of air from the lower space R1 to the upper portion of the wing portion 20 is suppressed, and the damping of the lift is suppressed. can do. Further, by adjusting the length of the front attachment cord 30A attached to the front side membrane 30 and the length of the rear attachment cord 32A attached to the rear side membrane 32, the elevation angle of the wing portion 20 can be easily adjusted. .

  In addition, the wings 20 can be easily folded by pulling the ropes 28F and 28R to center the flexible membrane 20M. Thereby, at the time of traveling, the wing portion 20 can be reduced to reduce the air resistance.

  In the present embodiment, the pedestal 18 is disposed on the roof 14, and the wing portion 20 is disposed to cover the pedestal 18. However, without the pedestal 18, the wing portion 20 having no opening 24 is used as the roof 14. It may be arranged.

  Moreover, although the wing part 20 was made into the bag shape in this embodiment, the lower part of the wing part 20 may be eliminated and you may make it form enclosed space R2 between the roof 14 and the wing part 20.

DESCRIPTION OF SYMBOLS 10 Variable roof structure for vehicles, 12 vehicles, 14 roofs 18 pedestals, 20 wings part, 20M flexible membrane, 22 air inflow part 26 upper and lower connection parts, 30 front side membrane (side membrane), 32 rear side membrane (side membrane)
R1 lower space, R2 enclosed space

Claims (7)

A roof provided above the vehicle,
It has an air inflow portion provided on the roof and opening toward the front of the vehicle, and an enclosed space that encloses the air flowing in from the air inflow portion, and the air does not flow into the enclosed space. A flexible membrane is deformed by being in a flowing state where air flows into the enclosed space from a flowing state, and a wing portion is deformed into a wing shape that generates a lifting force;
Variable roof structure for vehicles equipped with   The variable roof structure for a vehicle according to claim 1, wherein the wing shape is a reflect camber shape.   The flexible film according to claim 1 or 2, wherein the flexible membrane is disposed along the upper surface of the roof while forming a lower space apart from the roof, and the inside is a bag shape serving as the enclosed space. Variable roof structure for vehicles.   The variable roof for a vehicle according to claim 3, wherein the flexible membrane is provided with a plurality of upper and lower connection portions connecting the upper and lower portions so that the distance in the vertical direction across the enclosed space does not exceed a predetermined length. Construction.   The wing according to claim 3 or 4, wherein the wing has a pedestal spaced apart from the roof along the top surface of the roof, the top surface of the pedestal being covered by the flexible membrane. Variable roof construction for vehicles.   The variable roof structure for a vehicle according to any one of claims 3 to 5, wherein a side film covering the lower space is provided between both ends in the vehicle width direction of the wing portion and the roof. .   The variable roof structure for a vehicle according to any one of claims 1 to 6, wherein the wing portion can be shortened in the vehicle width direction in the non-inflowing state.