JP5267156B2 - Vehicle radiator grille structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control an introduction amount of air into an engine room, and to make the appearance of a radiator grille excellent. <P>SOLUTION: In an upper grille 12, tips of rotary blades 32, 34 and 36 are shielded from the outside of a vehicle body by a rear extended piece 28A and grille lattices 24 and 26 in upper grille opened states that the plurality of rotary blades 32, 34 and 36 open a grille opening 20 by arranging each of the tips at a vehicle body front side of each base end. In an upper grille closed state that the plurality of rotary blades 32, 34 and 36 adjacent to each other superimpose the tips and the base ends to close the grille opening 20, the tips of the rotary blades 32, 34 and 36 are arranged in projection planes of the grille lattice parts 24 and 26 and a lower wall 44 by a vehicle body front view. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a radiator grille structure for a vehicle, and more particularly to a radiator grille structure provided with a shutter device that opens and closes a grille opening of a radiator grille.

  Conventionally, in a radiator grille structure of a vehicle (see, for example, Patent Document 1), a shutter device is installed in an air passage provided on the rear side of the vehicle body of the radiator grille. This shutter device opens and closes the air passage by rotating a plurality of blade members arranged in parallel around a support shaft. As a result, the amount of air introduced into the engine room is controlled.

JP 2007-1503 A

  By the way, in the radiator grill structure as described above, when the radiator grill is observed from the front side of the vehicle body, a plurality of blade members of the shutter device can be visually recognized from the gaps in the lattice portion of the radiator grill. For this reason, when there is no morphological unity in the lattice part of the radiator grille and the plurality of blade members, the observer is messed up and the appearance of the radiator grille is deteriorated.

  An object of the present invention is to obtain a radiator grille structure for a vehicle that can control the amount of air introduced into the engine room and improve the appearance of the radiator grille in consideration of the above facts.

A radiator grille structure for a vehicle according to claim 1 is provided at a front portion of a vehicle body, has a grill opening for introducing air into an engine room, and has a plurality of elongated grilles. A radiator grille formed in a lattice shape by providing a lattice portion side by side in the grill opening, and provided on the vehicle body rear side of each of the plurality of grill lattice portions, each base end portion being each grill lattice portion The front end and the base end are adjacent to each other, and are supported by the vehicle body via a support shaft parallel to the vehicle body, and the front end portions are arranged on the vehicle body front side of the base end portions to open the grill opening. A plurality of rotating blades that are rotatable to a closed state in which the grill opening is closed by overlapping the portions, and the tip of each of the rotating blades is in the open state and the closed state. Car by radiator grill Is shielded from the outside, the axis of the support shaft of the rotating blade is characterized in that and a shutter device disposed within the projection plane of the radiator grill according to the vehicle front view.

  In the radiator grille structure for a vehicle according to claim 1, a plurality of rotating blades constituting a shutter device are provided on the vehicle body rear side of the plurality of grill lattice portions of the radiator grill. The plurality of rotating blades are arranged in an open state in which each distal end portion is disposed on the vehicle body front side of each proximal end portion to open the grill opening portion of the radiator grill, and the distal end portion and the proximal end portion are overlapped with each other and grilled. It can be turned to a closed state that closes the opening. Thereby, the amount of air introduced into the engine room can be controlled.

In addition, a plurality of rotating blades are in an open state in which the respective distal end portions are arranged on the vehicle body front side of the respective proximal end portions and in a closed state in which the distal end portion and the proximal end portion are overlapped with each other to close the grill opening. In any case , the tip of each rotating blade is shielded from the outside of the vehicle body by the radiator grille. Furthermore, the axis of the support shaft of the rotating blade is disposed in the projection plane of the radiator as viewed from the front of the vehicle body. That is, the front end and the base end portion of the rotating blade are hidden behind the grill lattice portion or the like and cannot be viewed from the outside of the vehicle body. As a result, when the radiator grille is observed from the outside of the vehicle body , the grille grille and the rotating blades have an integrated appearance that is continuous in the longitudinal direction of the vehicle body in the open state, so that the radiator grille looks good. Can be. Further, in the closed state, a step or the like generated at the overlapping portion between the tip end portion of one rotating blade and the base end portion of the adjacent rotating blade is hidden behind the grill grid portion and is difficult to visually recognize from the front side of the vehicle body. Thereby, the appearance of the radiator grille can be improved.

A radiator grille structure for a vehicle according to a second aspect of the present invention includes a plurality of grills which are provided at the front of the vehicle body and have a grill opening for introducing air into the engine room and are formed in a long shape. A radiator grille formed in a lattice shape by providing a lattice portion side by side in the grill opening, and provided on the vehicle body rear side of each of the plurality of grill lattice portions, each base end portion being each grill lattice portion The front end and the base end are adjacent to each other, and are supported by the vehicle body via a support shaft parallel to the vehicle body, and the front end portions are arranged on the vehicle body front side of the base end portions to open the grill opening. A plurality of rotating blades that can be rotated to a closed state in which the grill opening is closed by overlapping the portions, and the tip of each rotating blade is the vehicle body in both the open state and the closed state The radiator as viewed from the front Is disposed in the projection plane of Lil, the axis of the support shaft of the rotating blade is characterized by comprising: a shutter device that will be disposed in the projection plane of the radiator grill according to the vehicle front view.

  In the radiator grille structure for a vehicle according to claim 2, a plurality of rotating blades constituting the shutter device are provided on the vehicle body rear side of the plurality of grill lattice portions of the radiator grill. The plurality of rotating blades are arranged in an open state in which each distal end portion is disposed on the vehicle body front side of each proximal end portion to open the grill opening portion of the radiator grill, and the distal end portion and the proximal end portion are overlapped with each other and grilled. It can be turned to a closed state that closes the opening. Thereby, the amount of air introduced into the engine room can be controlled.

In addition, in both the open state and the closed state, the distal end and the base end of each rotating blade are arranged in the projection surface of the radiator grille as viewed from the front of the vehicle body. Thereby, the appearance of the radiator grille can be improved.

That is, when the distal and proximal portions of the respective rotary blades in the open state is located within a projection plane of the radiator grill according to the vehicle front view (grill grating portion, etc.), distal and proximal portions of the rotating blades It is difficult to see from the front side of the vehicle body by hiding behind the grill grid. Thereby, since the grille lattice part and the rotating blades have an integrated appearance such that they are continuous in the longitudinal direction of the vehicle body, it is possible to improve the appearance of the radiator grille.

On the other hand, when the front end and the base end of each rotating blade are arranged in the projection plane of the radiator grille (grill grid portion, etc.) when viewed from the front of the vehicle body in the closed state, they are adjacent to the front end of one rotating blade. The level | step difference etc. which arise in the overlap part with the base end part of this rotating blade hide behind a grill lattice part, and it becomes difficult to visually recognize from the vehicle body front side. Thereby, the appearance of the radiator grille can be improved.

A radiator grille structure for a vehicle according to a third aspect of the present invention includes a plurality of grills which are provided at the front of the vehicle body and have a grill opening for introducing air into the engine room, and are formed in an elongated shape. A radiator grille formed in a lattice shape by providing a lattice portion side by side in the grill opening, and provided on the vehicle body rear side of each of the plurality of grill lattice portions, each base end portion being each grill lattice portion The front end and the base end are adjacent to each other, and are supported by the vehicle body via a support shaft parallel to the vehicle body, and the front end portions are arranged on the vehicle body front side of the base end portions to open the grill opening. A plurality of rotating blades that are pivotable to a closed state that overlaps the portion and closes the grill opening, and in the opened state, the tip of each rotating blade is the rear end of each grill lattice portion come in contact with the bottom, and in the closed state Tip of Kikaido blade is characterized by including a shutter device arranged in the projection plane of the radiator grill according to the vehicle front view.

  In the radiator grille structure for a vehicle according to claim 3, a plurality of rotating blades constituting a shutter device are provided on the vehicle body rear side of the plurality of grill lattice portions of the radiator grill. The plurality of rotating blades are arranged in an open state in which each distal end portion is disposed on the vehicle body front side of each proximal end portion to open the grill opening portion of the radiator grill, and the distal end portion and the proximal end portion are overlapped with each other and grilled. It can be turned to a closed state that closes the opening. Thereby, the amount of air introduced into the engine room can be controlled.

In addition, when the plurality of rotating blades are in the open state in which the respective distal end portions are disposed on the vehicle body front side of the respective base end portions, the distal end portions of the respective rotating blades are in contact with the lower rear end portions of the respective grill grid portions. Further, in the closed state in which the front end portion and the base end portion are overlapped with each other to close the grill opening, the front end portion of each rotating blade is disposed in the projection surface of the radiator grille. As a result, in the open state, the tip of each rotating blade is hidden behind each grill grid portion and is difficult to see from the front side of the vehicle body, and the grill grid portion and the rotating blade are integrated in the vehicle longitudinal direction. Appearance. Further, in the closed state, a step or the like generated at the overlapping portion between the tip end portion of one rotating blade and the base end portion of the adjacent rotating blade is hidden behind the grill lattice portion and is difficult to visually recognize from the front side of the vehicle body. Therefore, the appearance of the radiator grill can be improved. In particular, it is possible to improve the appearance when the radiator grill is looked down obliquely from above.

A radiator grille structure for a vehicle according to a fourth aspect of the present invention is provided at the front of the vehicle body, and has an upper grille for introducing air into the engine compartment and a grille opening for the lower grille, and is formed in a long shape. A plurality of grill grid portions arranged side by side in the grill opening are provided on the rear side of the vehicle body of each of the plurality of grill grid portions, and a base end portion While being supported by the vehicle body via a support shaft parallel to each grill grid portion, each distal end portion is disposed on the vehicle body front side of each base end portion to open the grill opening portion, and adjacent to each other A plurality of rotating blades that are pivotable to a closed state in which the tip end portion and the base end portion are overlapped to close the grill opening, and in the opened state, the tip end portions of the rotating blades are arranged on the lower grille. Grill lattice It is characterized by comprising, a shutter device in contact with the lower rear end of.

In the radiator grille structure for a vehicle according to claim 4, a shutter device is provided on the vehicle body rear side of a plurality of grill lattice portions of an upper grill and a lower grill which are provided in the front portion of the vehicle body and introduce air into the engine room. A plurality of rotating blades are provided. The plurality of rotating blades are arranged in an open state in which each distal end portion is disposed on the vehicle body front side of each proximal end portion to open the grill opening portion of the radiator grill, and the distal end portion and the proximal end portion are overlapped with each other and grilled. It can be turned to a closed state that closes the opening. Thereby, the amount of air introduced into the engine room can be controlled.

In addition, in the lower grill, when the plurality of rotating blades are in the open state in which the respective leading end portions are disposed on the vehicle body front side of the respective base end portions, the leading end portions of the respective rotating blades contact the lower rear end of the grill grid portion of the lower grille. Touch. As a result, the tip of each rotating blade is hidden behind the grill grid portion of the lower grill, making it difficult to see from the front side of the vehicle body, and the grille grid portion and the rotating blade are continuous in the vehicle longitudinal direction. Present. Thereby, the appearance of the lower grill can be improved. In particular, the appearance when the lower grill is looked down obliquely from above can be improved.

A radiator grille structure for a vehicle according to a fifth aspect of the present invention is the radiator grille structure for a vehicle according to the first or second aspect, wherein the rear end surface of each grill grid portion is disposed on the rear side of each vehicle body. It is characterized by being formed in a curved surface shape along the turning locus of the tip of each of the rotating blades.

In the radiator grille structure for a vehicle according to claim 5 , the rear end surface of each grill grid portion is formed in a curved shape along the rotation locus of the tip of each rotation blade. For this reason, in the open state of the plurality of rotating blades, the tips of the rotating blades can be arranged close to the rear end surfaces of the grill grid portions. Thereby, since the front-end | tip of each rotation blade | wing can be shielded favorably from the vehicle body outer side, the appearance of a radiator grill can be made still better.

A radiator grille structure for a vehicle according to a sixth aspect of the present invention is the radiator grille structure for a vehicle according to any one of the first to third aspects, wherein a rear end portion of each grill grid portion and each turn A stepped portion or an inclined portion is provided at the tip of the moving blade, and the grill lattice portion and the rotating blade arranged in the longitudinal direction of the vehicle body are arranged in the same plane in the open state. Yes.

In the radiator grille structure for a vehicle according to the sixth aspect , in the open state of the plurality of rotating blades, the grill lattice portion and the rotating blades arranged in the longitudinal direction of the vehicle body have their surfaces arranged on the same plane. For this reason, it is possible to improve the sense of unity between the grill grid portion and the rotating blades in the open state. Thereby, the appearance of the radiator grill can be further improved.

  As shown in FIG. 1, an upper grill 12 and a lower grill 14 as a radiator grill are provided at the front of the vehicle body of the vehicle 10 according to the first embodiment. The upper grill 12 is disposed on the vehicle body lower side of the front end portion of the engine hood 16, and the lower grill 14 is formed integrally with the bumper cover 17 on the vehicle lower side of the upper grill 12. The upper grill 12 and the lower grill 14 include grill openings 20 and 22 for introducing outside air into the engine room 18.

  As shown in FIGS. 2 to 4, a plurality (two in this embodiment) of grill grid portions 24 and 26 are provided in the grill opening 20 of the upper grill 12. These grill grid portions 24 and 26 are formed in a long plate shape, and are arranged in parallel in the vertical direction with the plate thickness direction substantially along the vehicle body vertical direction and the longitudinal direction along the vehicle width direction. ing. Both ends in the longitudinal direction of each grill grid portion 24, 26 are coupled to inner walls (side walls of the upper grill 12) on both sides in the vehicle width direction of the opening 20, and the upper grill 12 is formed in a grid shape as a whole. .

  An upper wall portion 28 of the upper grill 12 is arranged on the upper side of the vehicle body of the grill lattice portions 24 and 26. The upper wall portion 28 is formed in an open cross-sectional shape that opens toward the vehicle body lower side, and a rear extension piece 28A extends from the lower portion of the front end of the upper wall portion 28 toward the vehicle body rear side. . The rear extending piece 28A is formed in a long plate shape along the vehicle width direction, and is arranged in parallel with the grill grid portions 24 and 26 with the plate thickness direction along the vehicle body vertical direction. .

  A plurality of (three in the first embodiment) rotating blades 32, 34, and 36 constituting the shutter device 30 are arranged on the vehicle body rear side of the rear extension piece 28 </ b> A and the grill grid portions 24 and 26. . The rotary blades 32, 34, and 36 are formed in a long plate shape, and are arranged in parallel in the vertical direction with the longitudinal direction along the vehicle width direction. 2 to 4, for convenience of explanation, the cross sections of the rotary blades 32, 34, and 36 are not hatched.

  Support shafts 38, 40, and 42 are provided at one end in the short direction (base end, the right end in FIGS. 2 and 3) of each rotating blade 32, 34, 36. These support shafts 38, 40, 42 are arranged in parallel in the vertical direction in a state where the axial direction is along the vehicle width direction, that is, in a state parallel to the grill grid portions 24, 26.

  The uppermost support shaft 38 is disposed on the vehicle body rear side of the rear extension piece 28A, and the axis of the support shaft 38 has the same height as the center line α of the cross section of the rear extension piece 28A. Is arranged. The support shaft 40 disposed at the center is disposed on the rear side of the vehicle body of the grill grid portion 24, and the axis of the support shaft 40 is at the same height as the center line β of the cross section of the grill grid portion 24. Has been placed. The support shaft 42 disposed at the bottom is disposed on the rear side of the vehicle body of the grill grid portion 26, and the axis of the support shaft 42 is the same height as the center line γ of the cross section of the grill grid portion 26. Is arranged.

  These support shafts 38, 40, 42 are axially supported at both ends in the axial direction so as to be rotatable on inner walls (side walls of the upper grill 12) on both sides in the vehicle width direction of the opening 20. , 34, 36 are supported by the vehicle body via respective support shafts 38, 40, 42. In addition, a driving force of a driving source (not shown) (for example, a motor) is transmitted to each of the support shafts 38, 40, and 42 via a driving force transmission mechanism (not shown). 36 is rotated in conjunction with the open position shown in FIG. 3 and the closed position shown in FIG. 4 by the driving force of the drive source.

  As shown in FIG. 3, in a state where the rotating blades 32, 34, 36 are arranged at the open position (hereinafter referred to as “upper grille open state”), the rotating blades 32, 34, 36 are based on the tip portion. The grill opening 20 is opened by being arranged on the front side of the vehicle body at the end. For this reason, in the open state of the upper grille, traveling wind during vehicle traveling passes through the grill opening 20 and is introduced into the engine room 18, and a radiator (not shown) provided in the engine room 18 is provided. Is cooled by the traveling wind.

  On the other hand, as shown in FIG. 4, in a state where the rotating blades 32, 34, 36 are disposed at the closed position (hereinafter referred to as “upper grille closed state”), the rotating blades 32, 34, 36 are adjacent to each other. The tip and the base end are overlapped (contacted). The tip of the lowermost rotating blade 36 is inserted into a recess 44A provided on the rear end side of the lower wall portion 44 of the upper grill 12 and provided at the rear end portion of the lower wall portion 44. Abuts against the stopper portion 44B. In the upper grille closed state, the grill opening 20 is closed by the rotating blades 32, 34, and 36, and the introduction of traveling wind into the engine room 18 is blocked.

  Here, in the first embodiment, in the upper grille open state shown in FIG. 3, the tip of the rotary blade 32 is disposed opposite and close to the rear end surface 46 of the rear extending piece 28A. In this state, the tip of the rotary blade 32 is disposed within the projection surface of the rearward extending piece 28A as viewed from the front of the vehicle body, and is shielded from the outside of the vehicle body by the rearward extending piece 28A.

  Further, in the upper grille open state shown in FIG. 3, the tip of the rotating blade 34 is disposed opposite to and close to the rear end surface 48 of the grill grid portion 24. In this state, the tip of the rotary blade 34 is disposed within the projection surface of the grill grid portion 24 as viewed from the front of the vehicle body, and is shielded from the outside of the vehicle body by the grill grid portion 24.

  Further, in the upper grille open state shown in FIG. 3, the tip of the rotary blade 36 is disposed opposite and close to the rear end surface 50 of the grill grid portion 26. In this state, the tip of the rotary blade 36 is disposed within the projection surface of the grill grid portion 26 as viewed from the front of the vehicle body, and is shielded from the outside of the vehicle body by the grill grid portion 26.

  The rear end face 46 of the rear extension piece 28A is formed in a curved shape along the turning trajectory of the tip of the rotating blade 32, and the rear end face 48 of the grill grid portion 24 is a rotation of the tip of the rotating blade 34. The grille lattice portion 26 has a curved surface along the movement locus, and the rear end surface 50 of the grill grid portion 26 is formed in a curved surface along the rotation locus of the tip of the rotation blade 36.

  In the first embodiment, as shown in FIG. 3, the length L1 from the axis of the support shaft 38 to the tip of the rotating blade 32 is between the rear extension piece 28 </ b> A and the grill grid portion 24. The distance H1 is set to the same dimension (L1 = H1). For this reason, in the upper grille closed state shown in FIG. 4, the tip of the rotary blade 32 is a cross section of the grill grid part 24 in the projection plane of the grill grid part 24 as viewed from the front of the vehicle body (see region X in FIG. 4). It is arranged at the same height as the center line β.

  Similarly, as shown in FIG. 3, the length L2 from the axis of the support shaft 40 to the tip of the rotating blade 34 is the same as the distance H2 between the grill grid portion 24 and the grill grid portion 26. (L2 = H2). For this reason, in the upper grille closed state shown in FIG. 4, the tip of the rotary blade 34 is a cross-section of the grill grid part 26 in the projection plane of the grill grid part 26 as viewed from the front of the vehicle body (see region Y in FIG. 4). It is arranged at the same height as the center line γ.

  Further, as shown in FIG. 3, the length L3 from the axis of the support shaft 42 to the tip of the rotating blade 36 is slightly longer than the distance H3 between the grill grid portion 26 and the lower wall portion 44. It is set (L3> H3). For this reason, in the upper grille closed state shown in FIG. 4, the tip of the rotary blade 36 is a cross section of the lower wall portion 44 in the projection plane of the lower wall portion 44 as viewed from the front of the vehicle body (see region Z in FIG. 4). It is arranged on the vehicle body lower side than the center line δ.

  In the first embodiment, when the upper grille is closed, the support shafts 38, 40, 42 are in the vehicle longitudinal direction so that the rotating blades 32, 34, 36 hang down below the support shafts 38, 40, 42. It is arranged offset.

  On the other hand, as shown in FIGS. 2, 5, and 6, a plurality of (three in the present embodiment) grill grid portions 52, 54, and 56 are provided in the grill opening 22 of the lower grill 14. . These grill grid portions 52, 54, and 56 are formed in a long plate shape, and are arranged in parallel in the vertical direction with the plate thickness direction being substantially along the vehicle body vertical direction and the longitudinal direction being along the vehicle width direction. Has been placed. Both ends in the longitudinal direction of each grill grid 52, 54, 56 are coupled to inner walls (side walls of the lower grill 14) on both sides in the vehicle width direction of the opening 22, and the lower grill 14 is formed in a grid as a whole. .

  An upper wall portion 58 of the lower grill 14 is disposed on the upper side of the uppermost grill lattice portion 52 in the vehicle body, and a shutter device is disposed on the rear side of the upper wall portion 58 and the grill lattice portions 52, 54, 56 in the vehicle body. A plurality (four in the first embodiment) of rotating blades 62, 64, 66, and 68 constituting 60 are arranged. These rotary blades 62, 64, 66, and 68 have basically the same configuration as the rotary blades 32, 34, and 36 described above, and are formed in a long plate shape along the vehicle width direction. Are arranged in parallel in the vertical direction. 2, 5, and 6, the cross sections of the rotary blades 62, 64, 66, and 68 are not shown for convenience of explanation.

  Support shafts 70, 72, 74, and 76 are provided at one end in the short direction of the rotating blades 62, 64, 66, and 68 (base end, the right end in FIGS. 2 and 5). These support shafts 70, 72, 74, 76 are arranged in parallel in the vertical direction in a state where the axial direction is along the vehicle width direction, that is, in a state parallel to the grill grid portions 52, 54, 56.

  The support shaft 70 disposed at the top is disposed on the vehicle body rear side of the upper wall portion 58. Further, the second support shaft 72 from the top is disposed on the rear side of the vehicle body of the grill grid portion 52. Further, the third support shaft 74 from the top is disposed on the rear side of the grill grid portion 54, and the lowermost support shaft 76 is disposed on the rear side of the grill lattice portion 56.

These support shafts 70, 72, 74, 76 are axially supported at both ends in the axial direction so as to be rotatable on inner walls (side walls of the lower grille 14) on both sides in the vehicle width direction of the opening 22. 62, 64, 66, 68 are supported by the vehicle body via the respective support shafts 70, 72, 74, 76.
In addition, a driving force of a driving source (not shown) (for example, a motor) is transmitted to each support shaft 70, 72, 74, 76 via a driving force transmission mechanism (not shown). 64, 66, and 68 are rotated in conjunction with each other between the open position shown in FIG. 5 and the closed position shown in FIG. 6 by the driving force of the drive source.

  Here, as shown in FIG. 5, in the state where the rotary blades 62, 64, 66, 68 are arranged at the open position (hereinafter referred to as “lower grille open state”), the rotary blades 62, 64, 66, 68 opens the grill opening 22 by disposing the front end portion on the vehicle front side of the base end portion. For this reason, in this lower grille open state, the traveling wind during vehicle traveling passes through the grill opening 22 and is introduced into the engine room 18, and a radiator (not shown) provided in the engine room 18 is provided. It is cooled by the traveling wind.

  Further, as shown in FIG. 5, in the lower grille open state, the rotating blades 64, 66, 68 are configured to abut the respective front end portions on the rear end lower portions of the grill grid portions 52, 54, 56. The rotating blade 62 disposed at the top is accommodated in a recess 58 </ b> A formed on the rear end side of the upper wall portion 58.

  On the other hand, as shown in FIG. 6, in a state where the rotary blades 62, 64, 66, 68 are arranged at the closed position (hereinafter referred to as “lower grille closed state”), the rotary blades 62, 64, 66, 68 are used. Are superposed (abutted) on the tip and base ends adjacent to each other. The tip of the lowermost rotary blade 68 is inserted into a recess 78A provided on the rear end side of the lower wall portion 78 of the lower grill 14 and a stopper provided on the rear end portion of the lower wall portion 78. It abuts on the portion 78B. In the lower grille closed state, the grille opening 22 is closed by the rotating blades 62, 64, 66, and 68, and the introduction of traveling wind into the engine room 18 is blocked.

  Further, in the lower grille closed state, the tips of the rotating blades 62, 64, and 66 are within the projection plane of the grill grid portions 52, 54, and 56 when viewed from the front of the vehicle body (see regions S, T, and U in FIG. 6). The tip of the rotating blade 68 is arranged in the projection plane of the lower wall portion 78 as viewed from the front of the vehicle body (see region V in FIG. 6).

  Next, the operation and effect of the first embodiment will be described.

  In the first embodiment, the shutter device 30 provided in the upper grill 12 can open and close the grill opening 20 of the upper grill 12 by a plurality of rotating blades 32, 34, 36. The shutter device 60 provided on the lower grill 14 can open and close the grill opening 22 of the lower grill 14 by a plurality of rotating blades 62, 64, 66, 68. Thereby, the amount of air introduced into the engine room 18 can be controlled.

  Moreover, as shown in FIG. 3, the plurality of rotating blades 32, 34, 36 of the upper grill 12 rotate in the upper grille open state in which the distal ends are disposed on the vehicle body front side of the base ends. The tips of the blades 32, 34, and 36 are disposed within the projection surfaces of the rear extension piece 28A and the grill grid portions 24 and 26 as viewed from the front of the vehicle body, and are shielded from the outside of the vehicle body. In other words, the tips of the rotary blades 32, 34, and 36 are hidden behind the rear extending pieces 28A and the grill grid portions 24 and 26 and cannot be seen from the outside of the vehicle body (see arrows A and B in FIG. 3).

  For this reason, when the upper grill 12 is observed from the outside of the vehicle body in the upper grill open state, the rear extending pieces 28A and the grill grid portions 24, 26 and the rotating blades 32, 34, 36 are continuously provided in the vehicle longitudinal direction. It has an integrated appearance. Thereby, the appearance of the upper grill 12 in the upper grill open state can be improved.

  Moreover, in the first embodiment, the rear end face 46 of the rear extension piece 28 </ b> A and the rear end faces 48, 50 of the grill lattice portions 24, 26 are curved surfaces along the turning trajectories of the tips of the rotary blades 32, 34, 36. It is formed in a shape. For this reason, in the upper grille open state, the tips of the rotary blades 32, 34, 36 can be disposed close to the rear extension pieces 28A and the rear end faces 46, 48, 50 of the grill grid portions 24, 26. Thereby, since the front-end | tip of rotating blade 32,34,36 can be shielded favorably from the vehicle body outer side, the appearance of the upper grill 12 can be made still better.

  Further, in the first embodiment, as shown in FIG. 4, the upper grille closed state in which the plurality of rotating blades 32, 34, 36 of the upper grill 12 are overlapped with each other at the front end and the base end. Then, the tips of the rotary blades 32, 34, and 36 are disposed in the projection planes of the grill grid portions 24 and 26 and the lower wall portion 44 as viewed from the front of the vehicle body (see regions X, Y, and Z in FIG. 4).

  For this reason, a step generated at the overlapping portion between the distal end portion of the rotating blade 32 and the proximal end portion of the rotating blade 34 or an overlapping portion between the distal end portion of the rotating blade 34 and the proximal end portion of the rotating blade 36 is generated. The steps are hidden behind the grill grid portions 24 and 26 and are difficult to see from the front side of the vehicle body (see arrow B in FIG. 4). Thereby, the appearance of the upper grill 12 in the closed state of the upper grill can be improved.

  Further, as shown in FIG. 5, when the lower blades 62, 64, 66, 68 of the lower grill 14 are in the lower grille open state in which the respective front ends are disposed on the vehicle body front side of the respective base ends, Is housed in the recess 58A of the upper wall portion 58, and the tip ends of the rotating blades 64, 66, 68 abut against the lower rear end portions of the grill lattice portions 52, 54, 56. As a result, the rotating blades 62 are hidden behind the upper wall portion 58 and are difficult to see from the front side of the vehicle body, and the tips of the rotating blades 64, 66, 68 are hidden behind the grill grid portions 52, 54, 56. Thus, it becomes difficult to see from the front side of the vehicle body, and the grill lattice portions 52, 54, and 56 and the rotating blades 64, 66, and 68 have an integrated appearance that is continuous in the longitudinal direction of the vehicle body. Thereby, the appearance of the lower grille 14 in the lower grille open state can be improved. In particular, it is possible to improve the appearance when the lower grill 14 is looked down obliquely from above (see arrow A in FIG. 5).

  In addition, as shown in FIG. 6, when the lower grille closed state in which the plurality of rotating blades 62, 64, 66, 68 of the lower grill 14 are overlapped with each other, the rotating blades 62, The tips of 64, 66, and 68 are disposed within the projection planes of the grill grid portions 52, 54, and 56 and the lower wall portion 78 (see regions S, T, U, and V in FIG. 4) as viewed from the front of the vehicle body.

  For this reason, the level | step difference which arises in the superimposition part of the front-end | tip part of the rotary blade 62 and the base end part of the rotary blade 64, and the level | step difference which arises in the superimposition part of the front-end | tip part of the rotation blade 64 and the base end part of the rotation blade 66 And the step which arises in the front-end | tip part of the rotation blade 66 and the overlapping part of the rotation blade 68 is hidden behind the grill lattice parts 52, 54 and 56, and it becomes difficult to visually recognize from the vehicle body front side (see arrow B in FIG. 6). . Thereby, the appearance of the lower grill 14 in the lower grille closed state can be improved.

  In the first embodiment, the configuration is set such that L1 = H1, L2 = H2, and L3> H3 in FIG. 3. However, the present invention is not limited to this, and these dimensions may be changed as appropriate. it can.

  In the first embodiment, when the upper grille is closed, the tips of the rotary blades 32 and 34 are arranged at the same height as the center lines β and γ of the cross section of the grill grid portions 24 and 26, respectively. However, the present invention is not limited to this, and the distal ends of the rotary blades 32 and 34 may be arranged on the vehicle body lower side than the center lines β and γ of the cross sections of the grill grid portions 24 and 26, respectively. In this case, it is possible to improve the appearance when the upper grill 12 is looked down obliquely from above.

Next, another embodiment of the present invention will be described. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol as the said 1st Embodiment is provided, and the description is abbreviate | omitted.
<Second Embodiment>
FIG. 7 is a schematic perspective view showing the structure of the front portion of a vehicle 80 configured by applying the radiator grille structure according to the second embodiment of the present invention. The vehicle 80 has basically the same configuration as the vehicle 10 according to the first embodiment, but is formed in a long plate shape in the grill opening 84 of the upper grill 82 of the vehicle 80. The plurality of grill grid portions 86 are arranged substantially along the vertical direction of the vehicle body.

As shown in FIG. 8, a plurality of rotating blades 88 are provided on the rear side of the grill grid portion 86 with respect to the vehicle body. These rotating blades 88 are formed in a long plate shape, and are arranged substantially along the vertical direction of the vehicle body. The base end portions (upper end portions in FIG. 8) of these rotating blades 88 are supported by the vehicle body via support shafts 90 parallel to the grill grid portions 86, and each rotating blade 88 is shown in FIG. Are rotatable between an open position indicated by a solid line and a closed position indicated by a two-dot chain line in FIG. In FIG. 8, L4 and W4 are set to the same dimension (L4 = W4). The lower grill 92 has basically the same configuration as the upper grill 82. This embodiment also has basically the same functions and effects as the first embodiment.
<Third Embodiment>
FIG. 9 is a schematic longitudinal sectional view showing a partial configuration of a radiator grille structure according to a third embodiment of the present invention. This embodiment has basically the same configuration as the first embodiment. However, in this embodiment, stepped portions 98 and 100 are formed at the rear end portion of the grill grid portion 94 and the tip end portion of the rotating blade 96, respectively, and the rotating blade 96 is disposed at the open position (see FIG. 9), the surface of the grill grid portion 94 and the surface of the rotary blade 96 are arranged on the same plane. In FIG. 9, the hatching of the cross section of the grill grid portion 94 and the rotary blade 96 is omitted for convenience of explanation. In FIG. 9, reference numeral 102 denotes a support shaft.

In this embodiment, since the sense of unity between the grill grid part 94 and the rotating blades 96 in the open state (shown in FIG. 9) can be improved, the appearance of the radiator grill can be further improved.
<Fourth Embodiment>
FIG. 10 is a schematic longitudinal sectional view showing a partial configuration of a radiator grille structure according to a fourth embodiment of the present invention. This embodiment has basically the same configuration as the third embodiment. However, in this embodiment, inclined portions 104 and 106 are formed at the rear end portion of the grill grid portion 94 and the tip end portion of the rotating blade 96, respectively, and the rotating blade 96 is disposed at the open position (see FIG. 10), the surface of the grill grid portion 94 and the surface of the rotary blade 96 are arranged on the same plane.
Also in this embodiment, since the sense of unity between the grill grid part 94 and the rotating blades 96 in the open state (shown in FIG. 10) can be improved, the appearance of the radiator grill can be further improved. .

In the third embodiment and the fourth embodiment described above, the tip of the rotating blade 96 is the grill lattice portion 94 in a state where the rotating blade 96 is disposed at the open position (shown in FIGS. 9 and 10). You may make it the structure contact | abutted to a rear-end lower part, and you may make it the structure arrange | positioned closely without contacting.
<Fifth Embodiment>
FIG. 11 is a schematic longitudinal sectional view showing a partial configuration of a radiator grille structure according to a fifth embodiment of the present invention. This embodiment has basically the same configuration as the first embodiment. However, in this embodiment, inclined portions 110 and 112 are formed at the distal end portion and the proximal end portion of the rotating blade 108, respectively, and the rotating blade 108 is disposed at the closed position (shown by a solid line in FIG. 11). In this state, the surfaces of the adjacent rotating blades 108 are arranged on the same plane. In FIG. 11, reference numeral 114 denotes a grill lattice part, and 116 denotes a support shaft. Further, in FIG. 11, the hatching of the cross section of the grill grid portion 114 and the rotary blade 108 is omitted for convenience of explanation.
In this embodiment, since the sense of unity of the plurality of rotating blades 108 in the closed state (the state shown in FIG. 11) can be improved, the appearance of the radiator grill can be further improved.

  In the first to fifth embodiments, the grill grid portions 24, 26, 52, 54, 56, 86, 94, 114 and the rotating blades 32, 34, 36, 62, 64, 66, 68, 88, 96 and 108 are arranged along the vehicle width direction or the vehicle body vertical direction. However, the present invention is not limited to this, and the grill grid portion and the rotating blades are inclined with respect to the vehicle width direction and the vehicle body vertical direction. An arrangement may be adopted. Further, the number and shape of the grill grid portions and the rotating blades can be changed as appropriate.

10 Vehicle 12 Upper grill (Radiator grill)
14 Lower grill (radiator grill)
20, 22 Grill opening portions 24, 26, Grill lattice portions 32, 34, 36 Rotating blades 38, 40, 42 Support shafts 52, 54, 56 Grill lattice portions 62, 64, 66, 68 Rotating blades 70, 72, 74, 76 Support shaft 80 Vehicle 84 Grill opening 86 Grill lattice portion 88 Rotating blade 90 Support shaft 94 Grill lattice portion 96 Rotating blade 98, 100 Step portion 102 Support shaft 104, 106 Inclined portion 108 Rotating blade 114 Grill lattice Part 116 support shaft

Claims (6)

A grille is provided at the front of the vehicle body and has a grille opening for introducing air into the engine room, and a plurality of elongated grille grids are arranged side by side in the grille opening. A radiator grille formed into,
Each of the plurality of grill grid portions is provided on the rear side of the vehicle body, and each base end portion is supported by the vehicle body via a support shaft parallel to each grill grid portion, and each distal end portion is connected to each base end portion. A plurality of rotations that can be rotated to an open state in which the grille opening is opened by being disposed on the front side of the vehicle body and in a closed state in which the front end and the base end are overlapped with each other and the grille opening is closed. In each of the open state and the closed state, the tip of each rotary blade is shielded from the outside of the vehicle body by the radiator grille, and the axis of the support shaft of the rotary blade is as viewed from the front of the vehicle body A shutter device disposed in a projection surface of the radiator grill ;
Radiator grille structure for vehicles equipped with A grille is provided at the front of the vehicle body and has a grille opening for introducing air into the engine room, and a plurality of elongated grille grids are arranged side by side in the grille opening. A radiator grille formed into,
Each of the plurality of grill grid portions is provided on the rear side of the vehicle body, and each base end portion is supported by the vehicle body via a support shaft parallel to each grill grid portion, and each distal end portion is connected to each base end portion. A plurality of rotations that can be rotated to an open state in which the grille opening is opened by being disposed on the front side of the vehicle body and in a closed state in which the front end and the base end are overlapped with each other and the grille opening is closed. In each of the open state and the closed state, the tip of each rotating blade is disposed in the projection surface of the radiator grille as viewed from the front of the vehicle body, and the axis of the support shaft of the rotating blade a shutter device that will be located within the projection surface of the radiator grill according to the vehicle front vision,
Radiator grille structure for vehicles equipped with A grille is provided at the front of the vehicle body and has a grille opening for introducing air into the engine room, and a plurality of elongated grille grids are arranged side by side in the grille opening. A radiator grille formed into,
Each of the plurality of grill grid portions is provided on the rear side of the vehicle body, and each base end portion is supported by the vehicle body via a support shaft parallel to each grill grid portion, and each distal end portion is connected to each base end portion. A plurality of rotations that can be rotated to an open state in which the grille opening is opened by being disposed on the front side of the vehicle body and in a closed state in which the front end and the base end are overlapped with each other and the grille opening is closed. has a kinematic blade, the abut against the lower rear end of the front end portion of the respective rotary blades in an open state wherein the grill grating portion, and wherein in the closed state the by tip vehicle front view of the rotating blade A shutter device disposed in the projection surface of the radiator grill ;
Radiator grille structure for vehicles equipped with Provided at the front of the vehicle body, and has an upper grille and a lower grille opening for introducing air into the engine room, and a plurality of elongated grill grids are provided side by side in the grille opening Radiator grille formed in a lattice shape by being
  Each of the plurality of grill grid portions is provided on the rear side of the vehicle body, and each base end portion is supported by the vehicle body via a support shaft parallel to each grill grid portion, and each distal end portion is connected to each base end portion. A plurality of rotations that can be rotated to an open state in which the grille opening is opened by being disposed on the front side of the vehicle body and in a closed state in which the front end and the base end are overlapped with each other and the grille opening is closed. A shutter device having a moving blade and a front end portion of each rotary blade in contact with a lower end of a grill lattice portion of the lower grill in the open state in the lower grill;
  Radiator grille structure for vehicles equipped with   3. The rear end face of each grill grid part is formed in a curved surface shape along the turning locus of the tip of the rotating blade facing the rear side of the vehicle body. 4. The radiator grille structure of the vehicle.   A stepped portion or an inclined portion is provided at a rear end portion of each grill grid portion and a front end portion of each rotary blade, and the grill grid portion and the rotary blade arranged in the longitudinal direction of the vehicle body are in the open state. The radiator grille structure for a vehicle according to any one of claims 1 to 3, wherein each surface is arranged in the same plane.

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