Patent Application
20120186890
This disclosure generally relates to an air intake opening and closing apparatus for a vehicle.
Generally, a vehicle including an automobile is provided with an air intake for taking in air including a ram air into a front portion of the vehicle, that is, a portion forward of a radiator mounted on a front surface of an engine room, in order to release a heat of the radiator. For example, an air intake provided with a mechanism for opening and closing the air intake in order to, for example, regulate an amount of an air flow taken into the vehicle from the air intake is also suggested.
According to a grille opening and closing apparatus disclosed in JPS58-139519U (hereinafter referred to as Patent reference 1), plural elongated grille boards supported by a base frame that is attached on an edge portion of an air intake are driven by a drive source to pivot so as to open and close the air intake. A driving force of the drive source is transmitted to the elongated grille boards, for example, by means of an engagement between an elongated hole shaped engagement hole formed on an end portion of a link that is driven to pivot by the drive source and a pin formed on the elongated grille board in a protruding manner.
A device, that is a grille device, disclosed in DE10 2004 026 419 A1 (hereinafter referred to as Patent reference 2), which adjusts an air flow passing through inlet openings formed at a front area of a vehicle, is provided with control arrangements for adjusting the air flow passing through capture devices. The upper capture device is mounted on a mount position located rearward of a grille device.
The grille opening and closing apparatus disclosed in the Patent reference 1 is structured so that the plural elongated grille boards are arranged parallel with one another and pivot in an identical direction for opening and closing the air intake while retaining the parallel arrangement. According to the above-described structure, for example, even when the air intake is in a closed state, plural protrusions and recesses in a forward/rearward direction of the vehicle are formed by the plural elongated boards. This may increase an air resistance applied to the vehicle, which may result in reducing an aerodynamic performance of the vehicle.
According to the device disclosed in the Patent reference 2, even in a case that the air flow is blocked from passing through the capture device, air may be taken into a gap formed between the grille device and the capture devices because the capture devices are mounted rearward of the grille device. This may increase the air resistance applied to the vehicle, which may result in reducing the aerodynamic performance of the vehicle.
A need thus exists for an air intake opening and closing apparatus for a vehicle, which is not susceptible to the drawback mentioned above.
According to an aspect of this disclosure, an air intake opening and closing apparatus for a vehicle includes a cover provided at an air intake formed at a front portion of a vehicle body, and a moving mechanism configured to be supported by the vehicle body and connected to the cover so as to be driven by a drive source and to move the cover between a deployed position at which the cover closes the air intake and a retracted position at which the cover opens the air intake.
The foregoing and additional features and characteristics of this disclosure will become more apparent from the following detailed description considered with the reference to the accompanying drawings, wherein:
An embodiment of an air intake opening and closing apparatus for a vehicle, which is related to this disclosure will be explained with reference to
An air intake 14 is formed at an intermediate portion of the front frame 12 in a manner that an outline of the air intake 14 substantially extends along an outline of the front frame 12. A cover 15 for opening and closing the air intake 14 is provided at the air intake 14. The cover 15 is formed so that an outline thereof corresponds to the outline of the air intake 14. The cover 15 is movable from a deployed position at which the cover 15 fits in the air intake 14 to a check position at which the cover 15 is displaced substantially in the rearward direction of the vehicle from the deployed position and from the check position to a retracted position at which the cover 15 is upwardly displaced substantially along the design face 1a of the vehicle while retaining a posture that the cover 15 has in the check position, and in a sequence reverse to the above sequence (refer to
Thus, the cover 15 closes the air intake 14 while the cover 15 is in the deployed position and opens the air intake 14 while the cover 15 is in the retracted position. While the cover 15 is in the deployed position, the cover 15 is abutted against the front frame 12 (the design face 1a of the vehicle) so that the cover 15 and the front frame 12 include a substantially identical curvature, that is, a step formed therebetween is minimized. A retraction space in which the cover 15 is retracted while the cover 15 is in the retracted position is ensured along a reverse surface of the front frame 12 above the air intake 14 in a vertical direction of the vehicle. The cover 15 is displaced or moves between the check position and the retracted position while retaining the posture that the cover 15 has in the check position, which allows the cover 15 to move without interfering with the design face 1a (the front bumper 11, the front frame 12 and the engine hood 13).
As shown in
According to the above-described structure, while the cover 15 is positioned in the deployed position, the air intake 14 is closed by the cover 15 that tightly or closely fits in the air intake 14, thereby reducing an air resistance applied to the vehicle. On the other hand, once the cover 15 is positioned in the retracted position, the air intake 14 is opened and an interference between air taken into the engine room S via the air intake 14 and the cover 15 becomes extremely small or decreases to zero. Thus, the air is taken into the engine room S efficiently via the air intake 14.
Next, a moving mechanism 20 for moving the cover 15 from the deployed position to the check position and from the check position to the retracted position, and in the sequence reverse to the above sequence will be explained. As shown in
A rear shoe 22, which serves as a second sliding member constituting a sliding member, is provided on the guide rail 21 in a slidable manner, that is, in a manner that the rear shoe 22 slides on the guide rail 21 in the forward/rearward direction of the vehicle. The rear shoe 22 includes a shoe portion 23 formed into a block shape and sandwiched by the guide portions 21b, 21c, and is provided on the guide rail 21 in the slidable manner. The rear shoe 22 also includes a pair of guide protrusions 24, 25 formed at an inner end surface and an outer end surface of the shoe portion 23 (i.e. a right end surface and a left end surface of the shoe portion 23 in
A push belt 26 is accommodated in the belt-guiding portion 21d of the guide rail 21 while allowing the push belt 26 to slide inside the belt-guiding portion 21d in the forward/rearward direction of the vehicle. The connecting strip 22a loosely and movably inserted into the belt-guiding portion 21d with allowance is connected to the push belt 26 in a manner that the connecting strip 22a penetrates the push belt 26 so as to move with the push belt 26 relative to the guide rail 21 as a unit. As shown in
As shown in
A first end portion of a link 29 formed into an arm shape is pivotably connected to the rear shoe 22 at a position that corresponds to a position of the rail portion 21a in the width direction of the vehicle. A second end portion of the link 29 is pivotably connected to a rear end portion of an attachment member 30. The attachment member 30 includes a supporting portion 30a formed into an elongated shape and extending in the forward/rearward direction of the vehicle at a position that corresponds to the position of the rail portion 21a in the width direction of the vehicle, and an attachment portion 30b formed into a substantially Z-shape and fixedly attached to an upper portion of the supporting portion 30a. The second end portion of the link 29 is pivotably connected to a rear end portion of the supporting portion 30a by means of a shaft 31 whose axis extends in the width direction of the vehicle (a direction perpendicular to the paper on which
As shown in
A stopper 33 for blocking a path of a movement of the supporting portion 30a in the forward direction of the vehicle is provided at a front end of the guide rail 21 in the forward/rearward direction of the vehicle. On the other hand, a portion of a ceiling portion of the guide portion 21 c is cut and the cut portion is bent so as to stand upward for forming a locking lug 34 having a flange shape. The locking lug 34 is formed at a position that corresponds to a position of the engagement pin 32 of the supporting portion 30a when the supporting portion 30a is restricted by the stopper 33 from moving forward beyond the stopper 33. The locking lug 34, which protrudes upward, is positioned rearward relative to the engagement pin 32, and as a result, the cut and raised portion defines an engagement hole 35 on the ceiling portion of the guide portion 21c, in a position forward of the engagement pin 32. The engagement hole 35 is set so as to release a path of a pivoting movement or unlock the pivoting movement of the engagement pin 32 when the supporting portion 30a pivots about a first connecting point where the supporting portion 30a is connected to the front shoe 28 in the counterclockwise direction in
Accordingly, in a state that the supporting portion 30a is restricted by the stopper 33 from moving forward beyond the supporting portion 33, when the rear shoe 22 moves along the rail portion 21a in the forward direction of the vehicle, the link 29 pushed by the rear shoe 22 pushes the rear end portion of the supporting portion 30a upwardly while pivoting about a second connecting point, where the link 29 is connected to the rear shoe 22, in the clockwise direction in
On the other hand, in a state that the link 29 completes pushing the rear end portion of the supporting portion 30a, when the rear shoe 22 starts moving along the rail portion 21a in the rearward direction of the vehicle, the link 29, the rear shoe 22, the attachment member 30 and the front shoe 28 are also moved in the rearward direction of the vehicle interlockingly with the rear shoe 22. At this time, the link 29 pulled by the rear shoe 22 pivots about the second connecting point in the clockwise direction in
After the link 29 completes pulling the rear end portion of the supporting portion 30a, as the rear shoe 22 further moves along the rail portion 21a in the rearward direction of the vehicle, the supporting portion 30a (the attachment member 30) that is practically integrated with the rear shoe 22 via the link 29 also moves in the rearward direction of the vehicle. Thus, the cover 15 moves to the retracted position.
Next, an operation of the intake opening and closing apparatus of the embodiment will be explained. In a state that the cover 15 is in the retracted position, and when the push belt 26 actuated by the actuator 27 is pushed in the forward direction of the vehicle, the rear shoe 22, the front shoe 28, the link 29 and the attachment member 30 move together as the unit in the forward direction of the vehicle until the supporting portion 30a is restricted by the stopper 33 from moving. Accordingly, the cover 15 moves from the retracted position to the check position.
As the push belt 26 actuated by the actuator 27 is pushed further in the forward direction of the vehicle, the rear shoe 22 moves further in the forward direction of the vehicle along the guide rail 21. Thus, the link 29 pushed by the rear shoe 22 pivots about the second connecting point while pushing up the rear end portion of the supporting portion 30a and the supporting point 30a pivots about the second connecting point. Accordingly, the cover 15 moves from the check position to the deployed position.
On the other hand, in a case that the push belt 26 actuated by the actuator 27 is pulled in the rearward direction of the vehicle while the cover 15 is in the deployed position, the rear shoe 22 moves along the guide rail 21 in the rearward direction of the vehicle. The link 29 pulled by the rear shoe 22 pivots about the first connecting point while pulling down the rear end portion of the supporting portion 30a and the supporting portion 30a pivots about the second connecting point. Accordingly, the cover 15, together with the attachment member 30, is pulled in the rearward direction of the vehicle, that is, toward the engine room S, and thus the cover 15 moves from the deployed position to the check position. At this time, the cover 15 comes to be positioned substantially below the retraction space in the vertical direction of the vehicle, which allows the cover 15 to move diagonally upwardly into the retraction space.
As the push belt 26 actuated by the actuator 27 is pulled further in the rearward direction of the vehicle, the rear shoe 22, the front shoe 28, the link 29 and the attachment member 30 move together as the unit along the guide rail 21 in the rearward direction of the vehicle. Accordingly, the cover 15, together with the attachment member 30, moves into the retraction space, and thus the cover 15 moves from the check position to the retracted position. Thus, the radiator grille 16 is exposed to the outside of the front portion of the vehicle body 1 via the air intake 14.
As explained above, according to the air intake opening and closing apparatus of the embodiment, the following effects and advantages may be achieved. According to the embodiment, the cover 15 is moved to the retracted position by the moving mechanism 20, and thus the interference between the air taken into the engine room S via the air intake 14 and the cover 15 becomes extremely small or decreases to zero, which allows the air to be taken into the engine room S efficiently from the air intake 14. On the other hand, the cover 15 is moved to the deployed position by the moving mechanism 20, and thus the air intake 14 is closed, for example, in the manner that the cover 15 closely fits in the air intake 14. Therefore, the air resistance applied to the cover 15, which is mounted on the vehicle, may be reduced and an aerodynamic performance of the vehicle may be enhanced.
According to the embodiment, the radiator grille 16 is exposed to the outside of the front portion of the vehicle body 1 via the air intake 14 when the cover 15 is positioned in the retracted position. Thus, an appearance of the front portion of the vehicle body 1 may be changed according to the position of the cover 15, that is, according to whether the cover 15 is in the deployed position or the retracted position. Furthermore, the radiator 17 provided at the inside of the engine room S is protected by the radiator grille 16.
According to the embodiment, when the cover 15 is in the deployed position, the cover 15 is fitted in the air intake 14 so as to tightly close the air intake 14. Therefore, the air resistance applied to the cover 15, which is mounted on the vehicle, may be reduced and the aerodynamic performance of the vehicle may be enhanced.
According to the embodiment, the retracted position of the cover 15 is set to be above the air intake 14 in the vertical direction of the vehicle where there is a small space constraint for receiving the cover 15. Thus, the entire air intake 14 is opened reliably when the cover 15 is in the retracted position.
According to the embodiment, the moving mechanism 20 has a simple structure including the guide rail 21, the rear shoe 22, the front shoe 28 and the attachment member 30 but is not limited thereto. Furthermore, the path of the movement of the cover 15, that is, the deployed position and the retracted position of the cover 15, may be changed by, for example, changing a shape or a configuration of the guide rail 21. This may, for example, allow the design of the air intake opening and closing apparatus to be easily changed and modified so as to be adapted to various types of vehicles.
According to the embodiment, the rotation of the link 29 is restricted by means of, for example, the engagement pin 32, the locking lug 34 and the engagement hole 35, the guide portion 21c while the front shoe 28 is positioned between the second position and the first position. At this time, the front shoe 28 and the attachment member 30 are practically integrated as the unit via the link 29. Thus, as the rear shoe 22 is actuated by the actuator 27, the front shoe 28, the rear shoe 22, the attachment member 30 and the link 29 move along the guide rail 21 together with the cover 15. On the other hand, when the front shoe 28 is positioned in the first position, the attachment member 30 (and the front shoe 28) is stopped by the stopper 33 from moving in the forward direction of the vehicle, and the engagement pin 32 and so forth allow the link 29 to pivot, that is, the restriction on the pivoting movement of the link 29 is released. Accordingly, when only the rear shoe 22 actuated by the actuator 27 further moves in the forward direction of the vehicle along the guide rail 21 while the above-described state is established, the link 29 pivots and the attachment member 30, together with the cover 15, pivot about the first connecting point. Thus, a degree of freedom in the path of movement of the cover 15 is increased, thereby closing the air intake 14 more reliably when the cover 15 is in the deployed position.
According to the embodiment, when the cover 15 is in the deployed position, the cover 15 is abutted against the front frame 12 (the design face 1a of the vehicle), which includes a curved surface, at the substantially same curvature. Therefore, the aerodynamic performance and an aesthetic quality of the vehicle may be enhanced.
According to the embodiment, the air is controlled not to enter into the engine room S by positioning the cover 15 in the deployed position when, for example, a temperature of an engine cooling fluid is low, and thus a warming-up performance of the engine may be enhanced. On the other hand, the air may be effectively taken into the engine room S from the air intake 14 by positioning the cover 15 in the retracted position when, for example, the temperature of the engine cooling fluid is high, and thus a cooling performance of the engine may be enhanced.
The embodiment may be changed as will be explained below. Instead of the push belt 26, for example, a push cable or a timing belt having gear-shaped protrusions and recesses may be used.
The link 29 may be omitted from the structure of the embodiment so that the rear shoe 22 directly supports the supporting portion 30a (the attachment member 30). In this case, the rear shoe 22 and the front shoe 28 may be integrated with each other so as to configure the sliding member.
The retracted position of the cover 15 may be set to be positioned, for example, below the air intake 14 as long as the retraction space is ensured below the air intake 14 in the vertical direction of the vehicle. When the cover 15 is in the deployed position, the cover 15 may be arranged in other manners instead of being fitted in the air intake 14 as long as the cover 15 is arranged tightly or closely at the air intake 14. When the cover 15 is in the retracted position, the cover 15 and the front frame 12 (the design surface 1a of the vehicle) may be connected with each other in other manners instead of being abutted against each other.
The air intake opening and closing apparatus of the embodiment may include a structure where the air intake 14 (and the cover 15) is not exposed to the outside of the front end portion of the vehicle body 1. The radiator grille 16 may include a mesh configuration where slits are defined by a combination of plural vertical frames and plural horizontal frames, or by either the plural vertical frames or the plural horizontal frames. The radiator grille 16 may be omitted from the structure of the air intake opening and closing apparatus.
According to the embodiment, the air intake opening and closing apparatus for the vehicle includes the cover 15 provided at the air intake 14 formed at the front portion of the vehicle body 1, and the moving mechanism 20 configured to be supported by the vehicle body 1 and connected to the cover 15 so as to be driven by the actuator 27 and to move the cover 15 between the deployed position at which the cover 15 closes the air intake 14 and the retracted position at which the cover 15 opens the air intake 14.
According to the above-described structure, the cover 15 is moved to the retracted position by the moving mechanism 20, and thus the interference between the air taken into the engine room S via the air intake 14 and the cover 15 becomes extremely small or decreases to zero, which allows the air to be taken into the engine room S efficiently from the air intake 14. On the other hand, the cover 15 is moved to the deployed position by the moving mechanism 20, and thus the air intake 14 is closed, for example, by means that the cover 15 closely fits in the air intake 14. Therefore, the air resistance applied to the cover 15, which is mounted on the vehicle, may be reduced and the aerodynamic performance of the vehicle may be enhanced.
According to the embodiment, the air intake opening and closing apparatus for the vehicle further includes the radiator grille 16 mounted on the vehicle body 1 at a position between the air intake 14 and the radiator 17.
According to the above-described structure, the radiator 17 provided at the inside of the engine room S may be protected by the radiator grille 16.
According to the embodiment, the cover 15 fits in the air intake 14 while being in the deployed position.
According to the above-described structure, when the cover 15 is in the deployed position, the cover 15 is fitted in the air intake 14 so as to tightly close the air intake 14. Therefore, the air resistance applied to the cover 15, which is mounted on the vehicle, may be reduced and the aerodynamic performance of the vehicle may be enhanced.
According to the embodiment, the retracted position is set to be positioned above the air intake 14 relative to the vertical direction of the vehicle.
According to the above-described structure, the retracted position of the cover 15 is set to be above the air intake 14 in the vertical direction of the vehicle where there is the small space constraint for receiving the cover 15. Thus, the entire air intake 14 is opened reliably when the cover 15 is in the retracted position.
According to the embodiment, the moving mechanism 20 includes the guide rail 21 fixedly provided at the vehicle body 1, the front shoe 28 and the rear shoe 22 provided on the guide rail 21 in the slidable manner and being driven by the actuator 27 so as to move along the guide rail 21, and the attachment member 30 supported by the front shoe 28 and the rear shoe 22 and fixedly provided at the cover 15.
According to the above-described structure, the moving mechanism 20 has the simple structure including the guide rail 21, the rear shoe 22, the front shoe 28 and the attachment member 30 but is not limited thereto. Furthermore, the path of the movement of the cover 15, that is, the deployed position and the retracted position of the cover 15, may be changed by, for example, changing the shape or the configuration of the guide rail 21. This may, for example, allow the design of the air intake opening and closing apparatus to be easily changed and modified so as to be adapted to various types of vehicles.
According to the embodiment, the sliding member includes the front shoe 28 arranged on the first portion of the moving direction of the sliding member and the rear shoe 22 arranged on the second portion of the moving direction of the sliding member, the attachment member 30 is connected to the front shoe 28 in the pivotable manner, the actuator 27 is connected to the rear shoe 22. The air intake opening and closing apparatus for the vehicle further includes the link 29 whose first end portion is connected to the rear shoe 22 in the pivotable manner and whose second end portion is connected to the attachment member 30 in the pivotable manner, and the stopper 33 for stopping the front shoe 28 that is positioned in the first position corresponding to the deployed position of the cover 15 from moving in the direction away from the second position corresponding to the retracted position of the cover 15. The air intake opening and closing apparatus for the vehicle further includes the guide portion 21c, the locking lug 34 and the engagement hole 35 each provided at the guide rail 21, and the engagement pin 32 provided at the attachment member 30, and configured so as to restrict the link 29 from pivoting when the front shoe 28 is positioned between the second position and the first position, and to allow the link 29 to pivot when the front shoe 28 is positioned in the first position.
According to the above-described structure, the link 29 is restricted from pivoting by, for example, the engagement pin 32, the locking lug 34 and the engagement hole 35, the guide portion 21c when the front shoe 28 is positioned between the second position and the first position. At this time, the front shoe 28 and the attachment member 30 are practically integrated as the unit via the link 29. Thus, as the rear shoe 22 is actuated by the actuator 27, the front shoe 28, the rear shoe 22, the attachment member 30 and the link 29 move along the guide rail 21 together with the cover 15. On the other hand, when the front shoe 28 is positioned in the first position, the attachment member 30 (and the front shoe 28) is stopped by the stopper 33 from moving in the forward direction of the vehicle, and the engagement pin 32 and so forth allow the link 29 to pivot, that is, the restriction on the pivoting movement of the link 29 is released. At this time, the guide rail 21, the attachment member 30, the rear shoe 22 and the link 29 configure the link device (the so-called slider crank mechanism). Accordingly, when the rear shoe 22 actuated by the actuator 27 further moves in the forward direction of the vehicle along the guide rail 21 while the above-mentioned state is established, the link 29 pivots and the attachment member 30, together with the cover 15, pivot about the first connecting point. Thus, a degree of freedom in the path of movement of the cover 15 is increased, thereby closing the air intake 14 more reliably when the cover 15 is in the deployed position.
According to the embodiment, the air intake opening and closing apparatus for the vehicle, which enhances the aerodynamic performance when the air intake formed at the front portion of the vehicle is closed, may be achieved.
The principles, preferred embodiment and mode of operation of the present invention have been described in the foregoing specification. However, the invention which is intended to be protected is not to be construed as limited to the particular embodiments disclosed. Further, the embodiments described herein are to be regarded as illustrative rather than restrictive. Variations and changes may be made by others, and equivalents employed, without departing from the spirit of the present invention. Accordingly, it is expressly intended that all such variations, changes and equivalents which fall within the spirit and scope of the present invention as defined in the claims, be embraced thereby.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2010-009803 | Jan 2011 | JP | national |
This application is based on and claims priority under 35 U.S.C. §119 to Japanese Patent Application 2011-009803, filed on Jan. 20, 2011, the entire content of which is incorporated herein by reference.
