Active air door for a vehicle

Abstract

Disclosed herein is an active air damper for a vehicle, including a frame unit having a hollow structure in which a horizontal frame and a vertical frame of the frame unit are connected to each other and the horizontal frame and the vertical frame are configured to be in fluid communication with an external air intake of a grill; a damper unit having a plurality of damper members rotatably connected to the frame unit and the damper members are configured to open and close the external air intake; a driving unit configured to provide a driving force to the damper unit; and a linkage unit connected between the damper unit and the driving unit to transmit the driving force from the driving unit to the damper unit. The active air damper for a vehicle of the disclosure is capable of controlling the damper members to be operated in sequence based on a multi-path operation structure to improve cooling efficiency and optimize aerodynamic performance.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2021-0122604, filed on September 14, 2021, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to an active air damper for vehicles. Background Technology

[0004] An active air flap (AAF) is installed inside (or on) the front bumper or grille of a vehicle to open and close the external air intake of the grille according to vehicle conditions (such as driving conditions).

[0005] Specifically, the active air damper closes the damper assembly to close the external air intake, thereby reducing air resistance and improving fuel efficiency when the vehicle is traveling at high speed; or it opens the damper assembly to open the external air intake, thereby reducing the temperature inside the overheated engine compartment.

[0006] Typically, in active air dampers, when the actuator is actuated to simultaneously rotate multiple damper components (which are configured to open and close external air inlets), the driving pressure increases, which may result in an increase in the actuator torque for rotating the damper components. Summary of the Invention

[0007] The embodiments relate to an active air damper for a vehicle that can improve cooling efficiency and optimize aerodynamic performance by controlling the damper components to be operated sequentially based on a multi-path (bidirectional path) operation structure.

[0008] In particular, the embodiments relate to an active air damper for a vehicle that prevents one or more damper components from being actuated by aerodynamics, while also preventing the damper components from twisting in either direction when operated.

[0009] This disclosure is not limited to the purposes described above, and those skilled in the art to which this disclosure pertains will clearly understand other purposes of this disclosure through the following description.

[0010] According to one aspect of this disclosure, an active air damper for a vehicle is provided, comprising a frame unit having a hollow structure, wherein horizontal and vertical frames of the frame unit are connected to each other and configured to be in fluid communication with an external air intake of a grille; a damper unit having a plurality of damper members rotatably connected to the frame unit and configured to open and close the external air intake; a drive unit configured to provide a driving force to the damper unit; and a link unit connected between the damper unit and the drive unit to transmit the driving force from the drive unit to the damper unit.

[0011] The vertical frame may include a first guide groove having a straight segment and a curved segment extending as a single path and configured to guide the opening / closing path of each damper component; and a second guide groove having steps spaced apart from the first guide groove and configured to guide the straight path of each damper component.

[0012] When the external air inlet is open, each damper component can move linearly to the straight section of the first guide groove and the second guide groove, and then rotate via the curved section of the first guide groove. When the external air inlet is closed, each damper component can rotate via the curved section of the first guide groove, and then return to its initial position via the straight section of the first guide groove and the second guide groove.

[0013] Each damper component may include a first guide protrusion disposed at each end of the damper component and movable on a first guide groove; and a second guide protrusion disposed at each end of the damper component and movable on a second guide groove.

[0014] When each damper component opens and closes the external air inlet, the second guide protrusion can be located at the rear end of the second guide groove to serve as the rotation axis of each damper component.

[0015] The drive unit can be actuated by an electronic control unit (ECU) to cause the damper components to open and close the external air intake in sequence.

[0016] The drive unit may include an actuator having a drive shaft; a drive pinion that rotates together with the drive shaft; and a rack that reciprocates vertically on a vertical frame as the drive pinion rotates.

[0017] The rack may include a drive tooth located on a portion of the cross section on one side of the rack in the width direction and meshing with a drive pinion; and a plurality of driven teeth located on the other side of the rack in the width direction and spaced apart from each other, thereby transmitting rotational driving force to the link unit.

[0018] The link unit may include a driven pinion meshing with a driven tooth; a plurality of connecting rods located at both ends of each damper member, each connecting rod having a first end that rotates together with the driven pinion; a loader shaft configured to connect the connecting rods; and a connecting plate configured to connect a second end of each connecting rod to a first guide protrusion projecting from each end of each damper member.

[0019] The first end of the connecting rod and the connecting plate can be rotatably connected to each other.

[0020] The drive unit and the link unit can be embedded in the vertical frame; and each of the drive unit and the link unit has a portion that protrudes from the vertical frame and is covered by a cover.

[0021] The lid can be fastened to the front of the vertical frame by clips.

[0022] According to another aspect of this disclosure, an active air damper for a vehicle is provided, comprising a damper unit having a plurality of damper members configured to sequentially open and close an external air intake of a grille located at the front of the vehicle according to preset logic; a drive unit configured to provide a driving force to the damper unit and control the opening area of ​​each damper member; and a link unit configured to transmit the driving force from the drive unit to the damper unit.

[0023] The drive unit may include an actuator having a drive shaft; a drive pinion that rotates together with the drive shaft; and a rack that reciprocates vertically with the rotation of the drive pinion.

[0024] The rack may include a drive tooth located on a portion of the cross section on one side of the rack in the width direction and meshing with a drive pinion; and a plurality of driven teeth arranged at intervals on the other side of the rack in the width direction, thereby transmitting rotational driving force to the link unit.

[0025] The linking unit may include a driven pinion meshing with a driven tooth; a plurality of connecting rods located at both ends of each damper member, wherein each connecting rod has a first end that rotates together with the driven pinion; a loader shaft configured to connect the connecting rods; and a connecting plate configured to connect a second end of each connecting rod to a first guide protrusion projecting from each end of each damper member.

[0026] The first end of the connecting rod and the connecting plate are rotatably connected to each other.

[0027] According to another aspect of this disclosure, an active air damper for a vehicle is provided, comprising a frame unit having a hollow structure, wherein horizontal and vertical frames of the frame unit are connected to each other and configured to be in fluid communication with an external air intake of a grille located at the front of the vehicle; a damper unit having a plurality of damper members configured to sequentially open and close the external air intake by sliding in a forward-reverse direction and rotating at a point on a vertical frame of the frame unit; a drive unit configured to provide a driving force to the damper unit; a link unit configured to transmit the driving force from the drive unit to the damper unit; and a fixing unit located on the sliding path of each damper member to prevent each damper member from being pushed or twisted backward due to aerodynamics when a fixing protrusion protruding from each end of each damper member is located thereon.

[0028] The fixing unit may have a fixing groove that can be fixed to the corresponding fixing protrusion.

[0029] The fixing unit may include an elastic material capable of shock absorption. Attached Figure Description

[0030] Figure 1 This is an exemplary view schematically showing the installation position of an active air damper according to a first embodiment of the present disclosure.

[0031] Figure 2 This is a schematic perspective view of an active air damper according to a first embodiment of the present disclosure.

[0032] Figure 3 and Figure 4 It is along Figure 2 Cross-sectional view of AA.

[0033] Figures 5 to 9 This is an exemplary view showing the state in which the active air dampers according to the first embodiment of this disclosure are sequentially opened.

[0034] Figures 10 to 13 This is an exemplary view showing the state of the active air dampers being closed sequentially according to the first embodiment of this disclosure.

[0035] Figure 14 This is a schematic perspective view of an active air damper according to a second embodiment of the present disclosure.

[0036] Figure 15 and Figure 16 It is along Figure 14 The image shows a cross-sectional view of the BB and illustrates the open state of the active air damper according to a second embodiment of the present disclosure.

[0037] Figure 17 and Figure 18 It is along Figure 14 The image shows a cross-sectional view of the BB and illustrates the closed state of the active air damper according to a second embodiment of the present disclosure.

[0038] Figure 19 This is a schematic perspective view of an active air damper according to a third embodiment of the present disclosure.

[0039] Figure 20 This is a side cross-sectional view showing the structural features of the active air damper according to a third embodiment of the present disclosure.

[0040] Figure 21 This is a side cross-sectional view showing the operation of the stopper during the opening and closing of the active air damper according to a third embodiment of the present disclosure.

[0041] Figure 22 This is a side cross-sectional view showing the operation of the connecting plate of the active air damper according to the third embodiment of the present disclosure.

[0042] Figure 23 This is a partial perspective view schematically illustrating the configuration of the linking unit in an active air damper according to a third embodiment of the present disclosure.

[0043] Figures 24 to 27 This is an exemplary view showing the state in which the active air dampers according to the third embodiment of this disclosure are sequentially opened.

[0044] Figures 28 to 30 This is an exemplary view schematically showing the state of the active air dampers being closed sequentially according to the third embodiment of this disclosure. Detailed Implementation

[0045] The advantages and features of this disclosure, as well as methods for achieving these advantages and features, will become apparent from the embodiments described in detail below with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. This disclosure should be defined based on the full content set forth in the appended claims. Meanwhile, the terminology used herein is for the purpose of describing embodiments and is not intended to limit this disclosure. As used herein, the singular forms “a,” “an,” and “described” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be understood that when the terms “comprising / including” and / or “containing / constituting” are used in the specification, the presence of the said component, step, action, and / or element is specified, but the presence or addition of one or more other components, steps, actions, and / or elements is not excluded. As used herein, the term “and / or” includes any one and any combination of one or more of the listed items.

[0046] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0047] Coordinate system representation

[0048] The X, Y, and Z axes shown in the accompanying drawings of this disclosure represent a three-dimensional Cartesian coordinate system, in which the coordinates of a point or vector are displayed on coordinate axes of mutually perpendicular intersecting lines. In this coordinate system, for ease of description, the X-axis can be described as the axis representing the width direction (lateral) of the vehicle body, the Y-axis can be described as the axis representing the longitudinal direction (front-to-back) of the vehicle body, and the Z-axis can be described as the axis representing the vertical direction (up-down) of the vehicle body.

[0049] Each of the X, Y, and Z axes includes both a positive and a negative direction.

[0050] The positive direction of the X-axis refers to the right width direction of the vehicle body, and the negative direction of the X-axis refers to the left width direction of the vehicle body.

[0051] The positive direction of the Y-axis refers to the longitudinal direction of the vehicle body forward, starting from the imaginary origin connected to the X-axis, while the negative direction of the Y-axis refers to the longitudinal direction of the vehicle body backward, starting from the origin.

[0052] The positive direction of the Z-axis is towards the roof of the vehicle, and the negative direction of the Z-axis is towards the floor of the vehicle.

[0053] For ease of description, the positive and negative directions of each axis can be described together based on the same or different specific reference points.

[0054] For example, although the positive direction of the Y-axis in this disclosure refers to the front and the negative direction of the Y-axis refers to the rear, the positive and negative directions can be determined based on any reference point, and the reference point can vary for each structure.

[0055] First embodiment ( Figures 1 to 13 )

[0056] Figures 1 to 4 The basic configuration and internal configuration mechanism of the active air damper according to the first embodiment of the present disclosure are schematically shown.

[0057] refer to Figures 1 to 4 The active air damper 1000, indicated by reference numeral 1000, has a multi-valve structure for opening and closing external air intakes formed in the grille of vehicle 1. The active air damper 1000 helps improve driving safety of vehicle 1 and improves fuel efficiency by reducing air resistance generated during vehicle 1 operation.

[0058] The active air damper 1000 includes a frame unit 1100, a damper unit 1200, a drive unit 1300, and a link unit 1400.

[0059] Frame unit 1100 is in the form of a rectangular frame.

[0060] The frame unit 1100 can be screwed to the back of the grille. The frame unit 1100 may have individual mounting holes formed around it so as to be securely attached to the grille by screws passing through the holes.

[0061] The frame unit 1100 has a hollow structure, wherein the horizontal frame 1110 and the vertical frame 1120 of the frame unit 1100 are connected to each other and configured to communicate with the external air intake of the grille.

[0062] The horizontal frame 1110 consists of two panels, which are spaced apart from each other in the vertical direction (positive-negative direction of the Z-axis) in the outer air intake area on the back of the grille.

[0063] When viewed from the front, the horizontal frame 1110 is not exposed to the outside because it is covered by the grille. The constituent panels of the horizontal frame 1110 can be arranged at the upper and lower ends of their respective interiors of the external air intakes.

[0064] The vertical frame 1120 consists of two panels that are horizontally spaced apart from each other in the outer air intake area on the back of the grille.

[0065] When viewed from the front, the vertical frame 1120 is not exposed to the outside because it is covered by the grille. The constituent panels of the vertical frame 1120 can be arranged at the two inner ends of the external air intake.

[0066] The vertical frame 1120 includes a first guide groove 1121 having a straight segment 1121a and a curved segment 1121b forming a single path, and the first guide groove 1121 is configured to guide the opening / closing path of the associated damper member 1210; and a second guide groove 1122 having a step spaced apart from the first guide groove 1121, and configured to guide the straight path of the damper member 1210.

[0067] The damper unit 1200 is rotatably connected to the frame unit 1100, thereby opening and closing the external air intake of the grille in sequence.

[0068] The damper unit 1200 includes a damper component 1210, a first guide protrusion 1211, and a second guide protrusion 1212.

[0069] The damper component 1210 is rotatably connected to the frame unit 1100 to open and close the external air inlet.

[0070] If the external air inlet is open, the damper component 1210 moves linearly along the negative Y-axis via the straight segment 1121a of the first guide groove 1121 and the second guide groove 1122 with a straight path, and then rotates backward (in the negative Y-axis direction) via the curved segment 1121b of the first guide groove 1121.

[0071] Conversely, if the external air inlet is closed, the operating sequence of the damper component 1210 is the reverse of the mechanism for opening the external air inlet. That is, the damper component 1210 rotates forward (in the positive direction of the Y-axis) due to the curved section 1121b of the first guide groove 1121, and then returns to its initial position sequentially via the straight section 1121a of the first guide groove 1121 and the second guide groove 1122.

[0072] The first guide protrusion 1211 protrudes from each end of the damper member 1210 and can move on the first guide groove 1121.

[0073] The second guide protrusion 1212 protrudes from each end of the damper member 1210 and is spaced apart from the first guide protrusion 1211 by a predetermined interval. The second guide protrusion 1212 is movable on the second guide groove 1122.

[0074] When the damper component 1210 opens and closes the external air inlet, the second guide protrusion 1212 can be located at the rear end of the second guide groove 1122 and serve as the rotation axis of the damper component 1210.

[0075] The drive unit 1300 provides driving force to the damper unit 1200.

[0076] The drive unit 1300 is actuated by the electronic control unit (ECU) 10 to cause multiple damper components to open and close the external air intake in sequence.

[0077] The drive unit 1300 includes an actuator 1310, a drive pinion 1320, and a rack 1330.

[0078] The actuator 1310 may be a motor that rotates its drive shaft 1311 to transmit driving force to the damper unit 1200, and may be connected to one side of the frame unit 1100.

[0079] The drive pinion 1320 is connected to the drive shaft 1311 and rotates together with the drive shaft 1311.

[0080] The rack 1330 is embedded in the vertical frame 1120 (integrated and / or separately included in the vertical frame) and meshes with the drive pinion 1320 on one side in its width direction (corresponding to the negative direction of the Y-axis relative to the body of the rack), causing the rack 1330 to move up and down in a controlled manner. Therefore, the rack 1330 is used to transmit driving force to the link unit 1400, which meshes with the rack 1330 on the other side in its width direction (corresponding to the positive direction of the Y-axis relative to the body of the rack).

[0081] The rack 1330 includes a drive tooth 1331, a first driven tooth 1332, and a second driven tooth 1333.

[0082] The drive tooth 1331 is located in a portion of the cross section on one side of the rack 1330 in the width direction and meshes with the drive pinion 1320.

[0083] The first driven tooth 1332 and the second driven tooth 1333 are arranged spaced apart from each other on the opposite side of the width direction of the rack 1330, thereby transmitting the rotational driving force to the link unit 1400. In this case, although the first driven tooth 1332 and the second driven tooth 1333 are shown for ease of description, the present disclosure is not limited thereto. For example, n driven teeth (where n is a natural number) may also be provided.

[0084] Link unit 1400 is connected between damper unit 1200 and drive unit 1300 to transmit driving force from drive unit 1300 to damper unit 1200.

[0085] The link unit 1400 includes a driven pinion 1410, a connecting rod 1420, a loader shaft 1430, and a connecting plate 1440.

[0086] Driven pinion 1410 meshes with first driven tooth 1332 and second driven tooth 1333. Therefore, driven pinion 1410 can rotate together with first driven tooth 1332 and second driven tooth 1333 as rack 1330 rises or falls (moves in the positive or negative direction of Z-axis).

[0087] One end of the connecting rod 1420 rotates together with the driven pinion 1410. The connecting rod 1420 is located at each end of the damper component 1210.

[0088] The loader axle 1430 is connected to a plurality of connecting rods 1420 located at both ends of the damper component 1210.

[0089] Each connecting plate 1440 connects the other end of a related one of the connecting rods 1420 to a first guide protrusion 1211 protruding from the related end of the damper member 1210. In this configuration, the connecting plate 1440 is rotatably connected to the other end of the connecting rod 1420.

[0090] The drive unit 1300 and the link unit 1400 may be disposed inside or outside the vertical frame 1120. If the drive unit 1300 and the link unit 1400 are embedded in the vertical frame 1120, each of the drive unit 1300 and the link unit 1400 has a portion that protrudes from the vertical frame 1120 and is covered by a cover 1123. In this case, the cover 1123 can be fastened to the front of the vertical frame 1120 by a snap-fit.

[0091] In a variation of the first embodiment, the active air damper for the vehicle 1000 may further include a separate fixing unit (not shown in the first embodiment).

[0092] For example, a fixing unit may be arranged on the sliding path of the damper member 1210 to prevent the damper member 1210 from being pushed or twisted backward by aerodynamics when a fixing protrusion (not shown in the first embodiment) protruding from each end of the damper member 1210 is located thereon. In this case, the fixing unit may have a fixing groove corresponding to the fixing protrusion, and the fixing unit may be made of an elastic material capable of shock absorption.

[0093] Figures 5 to 13 The diagram shows the state in which the active air damper is sequentially opened or closed according to the first embodiment of this disclosure.

[0094] First, refer to Figures 5 to 9 According to the first embodiment of this disclosure, the active air damper 1000 can be opened sequentially.

[0095] The mechanism for opening the active air damper 1000 is as follows.

[0096] First: the actuator 1310 of the drive unit 1300 is actuated in response to a command from the ECU 10, and the drive pinion 1320 connected to the drive shaft 1311 of the actuator 1310 meshes with the drive teeth 1331 of the rack 1330 to rotate counterclockwise.

[0097] Secondly, when the drive pinion 1320 rotates counterclockwise, the rack 1330 converts the rotational motion of the drive pinion 1320 into linear motion and moves linearly downward (along the negative direction of the Z-axis).

[0098] Third: The driven pinion 1410 at each end of each of the upper and lower damper components 1210 meshes with the first driven tooth 1332 and the second driven tooth 1333 of the corresponding rack 1330 to rotate clockwise, the upper and lower damper components 1210 being arranged on the frame unit 1100. Through this operation, the driven pinion 1410 converts the linear motion of the rack 1330 into rotational motion.

[0099] Fourth: The connecting rod 1420, which rotates coaxially with the driven pinion 1410, rotates clockwise (in the negative direction of the Y-axis). The connecting plate 1440, which is connected to the connecting rod 1420, is pushed backward (in the negative direction of the Y-axis).

[0100] Fifth: The first guide protrusion 1211, connected to the connecting plate 1440, passes sequentially through the straight section 1121a and the curved section 1121b of the first guide groove 1121. Therefore, the damper member 1210 rotates clockwise (along the negative Y-axis) and gradually opens the external air inlet. During this process, as the first guide protrusion 1211 moves along the negative Y-axis through the straight section 1121a of the first guide groove 1121, the second guide protrusion 1212 moves linearly to the rear end of the second guide groove 1122 (along the negative Y-axis). Then, as the first guide protrusion 1211 moves through the curved section 1121b of the first guide groove 1121, the second guide protrusion 1212 serves as a rotation axis for the damper member 1210 to rotate rearward (along the negative Y-axis) at the appropriate position (at the rear end of the second guide groove 1122).

[0101] Therefore, the active air damper 1000 for a vehicle can effectively control the opening area of ​​the damper component 1210 by opening it sequentially.

[0102] Next, refer to Figures 10 to 13 According to the first embodiment of this disclosure, the active air damper 1000 can be closed sequentially.

[0103] The mechanism for closing the active air damper 1000 is as follows.

[0104] First: The actuator 1310 of the drive unit 1300 is actuated in response to a command from the ECU 10, and the drive pinion 1320 connected to the drive shaft 1311 of the actuator 1310 meshes with the drive teeth 1331 of the rack 1330 to rotate clockwise.

[0105] Secondly, when the drive pinion 1320 rotates clockwise, the rack 1330 converts the rotational motion of the drive pinion 1320 into linear motion and moves linearly upward (along the positive direction of the Z-axis).

[0106] Third: The driven pinion 1410 at each end of each of the upper and lower damper components 1210 meshes with the first driven tooth 1332 and the second driven tooth 1333 of the corresponding rack 1330, rotating counterclockwise, the upper and lower damper components 1210 being arranged on the frame unit 1100. Through this operation, the driven pinion 1410 converts the linear motion of the rack 1330 back into rotational motion.

[0107] Fourth: The connecting rod 1420, which rotates coaxially with the driven pinion 1410, rotates counterclockwise (along the positive direction of the Y-axis). The connecting plate 1440, which is connected to the connecting rod 1420, is pulled forward (along the positive direction of the Y-axis).

[0108] Fifth: The first guide protrusion 1211, connected to the connecting plate 1440, sequentially passes through the curved section 1121b and the straight section 1121a of the first guide groove 1121. Therefore, the damper member 1210 rotates counterclockwise (along the positive Y-axis) and gradually closes the external air intake. During this process, the second guide protrusion 1212 acts as the rotation axis of the damper member 1210 and rotates in the appropriate position until the first guide protrusion 1211 enters the straight section 1121a from the curved section 1121b of the first guide groove 1121. Then, as the first guide protrusion 1211 moves forward (along the positive Y-axis) through the straight section 1121a of the first guide groove 1121, the second guide protrusion 1212 moves linearly to the front end of the second guide groove 1122 (along the positive Y-axis). Therefore, the damper member 1210 returns to its initial position and keeps the external air intake of the grille closed.

[0109] Second embodiment ( Figures 14 to 18 )

[0110] Figure 14 This is a schematic perspective view of an active air damper according to a second embodiment of the present disclosure.

[0111] refer to Figure 14 According to the second embodiment, the active air damper, indicated by reference numeral 2000, has a single damper structure. Although the frame unit (or frame, the same as in the first embodiment) is not shown in the active air damper 2000 for the sake of visually illustrating the features of this configuration, the frame unit may be included in the active air damper 2000 of the second embodiment.

[0112] In summary, the active air damper 2000 of the second embodiment includes a loader shaft 2430 for preventing each damper component 2210 from twisting due to external forces (aerodynamics, high-pressure cleaning water, etc.).

[0113] For example, in this embodiment, the active air damper 2000 is configured such that the actuator 2310 is connected to only one side of the active air damper 2000, and the loader shaft 2430 serves as the drive shaft of the actuator 2310. In this case, the loader shaft 2430 is the same length as the damper member 2210 to enhance the rigidity of the damper member 2210.

[0114] In particular, since the connecting rod 2420 located at each end of the damper member 2210 is connected to each longitudinal end of the loader shaft 2430, the actuator 2310 can rotate the damper member 2210 without any problems even if the actuator 2310 is activated only on one side of the active air damper 2000.

[0115] Specifically, the active air damper 2000 of the second embodiment includes a damper unit 2200, a drive unit 2300, and a link unit 2400.

[0116] The damper unit 2200 has an operating mechanism in which the linear and bending movements of the damper unit are performed in a single path, and the external air intake of the grille is opened and closed.

[0117] The damper unit 2200 can be connected to a frame unit (not shown) that communicates with the external air intake of the radiator grille, or it can be directly connected to the grille for rotation.

[0118] The damper unit 2200 includes a damper component 2210, a first guide protrusion 2211, and a second guide protrusion 2212. Since these components are the same as those in the first embodiment described above, their detailed description will be omitted.

[0119] The drive unit 2300 provides driving force to the damper unit 2200. In this case, the drive unit 2300 is actuated by the electronic control unit (ECU) 10 to cause the damper member 2210 to sequentially open and close the external air intake.

[0120] Link unit 2400 is connected between damper unit 2200 and drive unit 2300 to transmit driving force from actuator 2310 of drive unit 2300 to damper unit 2200.

[0121] The link unit 2400 includes a connecting rod 2420, a loader shaft 2430, and a connecting plate 2440.

[0122] The connecting rod 2420 is used to constrain each end of the damper component 2210, and is in the form of a long rod with chamfered longitudinal ends.

[0123] The loader axle 2430 connects to a plurality of connecting rods 2420 located at both ends of the damper component 2210. The loader axle 2430 is connected to one end of each connecting rod 2420.

[0124] The primary function of the loader shaft 2430 is to transmit power from the actuator 2310 to both ends of the damper member 2210 while preventing power from being biased to either side. Therefore, the loader shaft 2430 prevents the damper member 2210 from being twisted by providing uniform power to both ends of the damper member 2210. This is significant because the damper member 2210 is flush with the radiator grille.

[0125] One end of the loader shaft 2430 can be directly connected to the actuator 2310 and used as a shaft that rotates together with the rotary actuation of the actuator 2310.

[0126] In another example, a shaft gear 2431 may be provided at one end of the loader shaft 2430. The shaft gear 2431 may be connected between the rotating shaft of the actuator 2310 and the loader shaft 2430 to serve as a medium that allows the rotating shaft of the actuator 2310 and the loader shaft 2430 to rotate in coordination with each other.

[0127] The rotating shaft of actuator 2310 may have an inner circumferential surface corresponding to the outer circumferential surface of shaft gear 2431, and may have a hollow structure for shaft gear 2431 to be inserted. In this case, the rotating shaft of actuator 2310 may be detached from actuator 2310.

[0128] Each connecting plate 2440 connects the other end of the associated connecting rod 2420 to a first guide protrusion 2211 protruding from the associated end of the damper member 2210. The connecting plate 2440 is rotatably connected to the other end of the connecting rod 2420.

[0129] In a variation of the second embodiment, the active air damper 2000 may also include a separate fixing unit (not shown in the second embodiment).

[0130] For example, a fixing unit may be arranged on the sliding path of the damper member 2210 to prevent the damper member 2210 from being pushed or twisted backward by aerodynamics when a fixing protrusion (not shown in the second embodiment) protruding from each end of the damper member 2210 is located thereon. In this case, the fixing unit may have a fixing groove corresponding to the fixing protrusion, and the fixing unit may be made of an elastic material capable of shock absorption.

[0131] Figure 15 and Figure 16 It is along Figure 14 The image shows a cross-sectional view of the BB and illustrates the open state of the active air damper according to a second embodiment of the present disclosure.

[0132] refer to Figure 15 and Figure 16 The mechanism for opening the active air damper 2000 according to the second embodiment of this disclosure is as follows.

[0133] First: the actuator 2310 of the drive unit 2300 is actuated in response to a command from the ECU 10, and the shaft gear 2431 connected to one end of the loader shaft 2430 is connected to the shaft of the actuator 2310 to rotate clockwise (in the negative direction of the Y-axis).

[0134] Secondly: The connecting rod 2420, which is coaxially connected to the shaft gear 2431, rotates clockwise together with the shaft gear 2431. The connecting plate 2440, which is connected to the connecting rod 2420, is pushed backward (along the negative direction of the Y-axis).

[0135] Third: The first guide protrusion 2211 connected to the connecting plate 2440 passes sequentially through the straight section 2121a and the curved section 2121b of the first guide groove 2121. Therefore, the damper component 2210 rotates clockwise (along the negative direction of the Y-axis) and gradually opens the external air inlet.

[0136] During this process, when the first guide protrusion 2211 moves along the negative Y-axis through the straight segment 2121a of the first guide groove 2121, the second guide protrusion 2212 moves linearly to the rear end of the second guide groove 2122 (along the negative Y-axis).

[0137] Then, as the first guide protrusion 2211 moves through the curved section 2121b of the first guide groove 2121, the second guide protrusion 2212 serves as a rotation axis for the damper member 2210, which rotates rearward (in the negative direction of the Y-axis) in the appropriate position (at the rear end of the second guide groove 2122).

[0138] Therefore, the active air damper 2000 can effectively control the opening area of ​​the damper component 2210.

[0139] Figure 17 and Figure 18 It is along Figure 14 The image shows a cross-sectional view of the BB and illustrates the closed state of the active air damper according to a second embodiment of the present disclosure.

[0140] refer to Figure 17 and Figure 18 The mechanism for closing the active air damper 2000 according to the second embodiment of this disclosure is as follows.

[0141] First: The actuator 2310 of the drive unit 2300 is actuated in response to a command from the ECU 10, and the shaft gear 2431 connected between one end of the loader shaft 2430 and the shaft of the actuator 2310 rotates counterclockwise (in the positive direction of the Y-axis) together with the shaft of the actuator 2310.

[0142] Secondly, the connecting rod 2420, which is coaxially connected to the shaft gear 2431, rotates counterclockwise together with the shaft gear 2431. The connecting plate 2440, which is connected to the connecting rod 2420, is pulled forward (along the positive direction of the Y-axis).

[0143] Third: The first guide protrusion 2211 connected to the connecting plate 2440 passes sequentially through the curved section 2121b and the straight section 2121a of the first guide groove 2121. Therefore, the damper component 2210 rotates counterclockwise (along the positive direction of the Y-axis) and gradually closes the external air inlet.

[0144] During this process, the second guide protrusion 2212 serves as the rotation axis of the damper component 2210 and rotates in the appropriate position until the first guide protrusion 2211 enters the straight section 2121a from the curved section 2121b of the first guide groove 2121.

[0145] Then, as the first guide protrusion 2211 moves forward (in the positive direction of the Y-axis) through the straight segment 2121a of the first guide groove 2121, the second guide protrusion 2212 moves linearly to the front end of the second guide groove 2122 (in the positive direction of the Y-axis). As a result, the damper member 2210 returns to its initial position and keeps the external air intake of the grille closed.

[0146] Third embodiment ( Figures 19 to 30 )

[0147] Figure 19 This is a schematic perspective view of an active air damper according to a third embodiment of the present disclosure. Figure 20 This is a side cross-sectional view showing the structural features of the active air damper according to a third embodiment of the present disclosure. Figure 21 This is a side cross-sectional view showing the operation of the stopper during the opening and closing of the active air damper according to a third embodiment of the present disclosure. Figure 22 This is a side cross-sectional view showing the operation of the connecting plate of the active air damper according to the third embodiment of the present disclosure. Figure 23 This is a partial perspective view that schematically illustrates the configuration of the linking units.

[0148] refer to Figures 19 to 23 According to the third embodiment, the active air damper, indicated by reference numeral 3000, has a single damper structure. Although the frame unit (or frame, the same as in the first embodiment) is not shown in the active air damper 3000 for the purpose of visually illustrating the features of this configuration, the frame unit may be included in the active air damper 3000 of the third embodiment.

[0149] In summary, the active air damper 3000 of the third embodiment includes a loader axle 3430 and a fixing unit 3500 (see...). Figure 24 ), used to prevent each damper component 3210 from twisting due to external forces (aerodynamics, high-pressure cleaning water, etc.).

[0150] For example, in this embodiment, the active air damper 3000 is configured such that the actuator 3310 is connected to only one side of the active air damper 3000, and the loader shaft 3430 serves as the drive shaft of the actuator 3310. In this case, the loader shaft 3430 is the same length as the damper member 3210 to enhance the rigidity of the damper member 3210.

[0151] In particular, since the connecting rod 3420 located at each end of the damper member 3210 is connected to each longitudinal end of the loader shaft 3430, the actuator 3310 can rotate the damper member 3210 without any problems even if the actuator 3310 is actuated only on one side of the active air damper 3000.

[0152] Furthermore, by using fixed unit 3500 (see...) Figure 24 (The fixing unit 3500 is fixed around each end of the loader shaft 3430) and the damper component 3210 adopt a snap-fit ​​fastening structure to prevent the damper component 3210 from shaking.

[0153] Specifically, the active air damper 3000 includes a frame unit (not shown), a damper unit 3200, a drive unit 3300, and a link unit 3400.

[0154] The frame unit of the third embodiment has a hollow structure, wherein the frame unit, like the frame unit of the first embodiment, has a separate accommodating space therein, and the frame unit is connected to the external air inlet of the grille 2.

[0155] The frame unit includes a first guide groove 3121 having a straight segment 3121a and a curved segment 3121b and a second guide groove 3122 having a straight path, wherein the first guide groove 3121 and the second guide groove 3122 are stepped.

[0156] The damper unit 3200 can be connected to a frame unit (not shown) that communicates with the external air intake of the radiator grille 2, or it can be directly connected to the grille for rotation.

[0157] The damper unit 3200 includes a damper component 3210, a first guide protrusion 3211, a second guide protrusion 3212, and a fixed protrusion 3213.

[0158] The damper component 3210, the first guide protrusion 3211, and the second guide protrusion 3212 are the same as those in the above embodiment. However, this embodiment differs from the above embodiment in that a fixing protrusion 3213 protrudes from each front end of the damper component 3210. A detailed description of this will be given later.

[0159] The drive unit 3300 provides driving force to the damper assembly 3200. In this case, the drive unit 3300 is actuated by the electronic control unit (ECU) 10 to cause the damper member 3210 to sequentially open and close the external air intake.

[0160] Link unit 3400 is connected between damper unit 3200 and drive unit 3300 to transmit driving force from actuator 3310 of drive unit 3300 to damper unit 3200.

[0161] The link unit 3400 includes a connecting rod 3420, a loader shaft 3430, a connecting plate 3450, and a stopper 3450.

[0162] The connecting rod 3420 is used to constrain each end of the damper component 3210 and is in the form of a long rod.

[0163] The loader axle 3430 connects to a plurality of connecting rods 3420 located at both ends of the damper component 3210. The loader axle 3430 is connected to one end of each connecting rod 3420.

[0164] The primary function of the loader shaft 3430 is to transmit the power of the actuator 3310 to both ends of the damper member 3210 while preventing the power from being biased to either side. Therefore, the loader shaft 3430 prevents the damper member 3210 from being twisted by providing uniform power to both ends of the damper member 3210.

[0165] One end of the loader shaft 3430 can be directly connected to the actuator 3310 and used as a shaft that rotates together with the rotary actuation of the actuator 3310.

[0166] In another example, a shaft gear 3431 may be provided at one end of the loader shaft 3430. The shaft gear 3431 may be connected between the rotating shaft of the actuator 3310 and the loader shaft 3430 to serve as a medium that allows the rotating shaft of the actuator 3310 and the loader shaft 3430 to rotate together with each other.

[0167] The rotating shaft of the actuator 3310 may have an inner circumferential surface corresponding to the outer circumferential surface of the shaft gear 3431, and may have a hollow structure for the shaft gear 3431 to be inserted. In this case, the rotating shaft of the actuator 3310 can be separated from the actuator 3310.

[0168] Each connecting plate 3440 connects the other end of the associated connecting rod 3420 to a first guide protrusion 3211 protruding from the associated end of the damper member 3210. The connecting plate 3440 is rotatably connected to the other end of the connecting rod 3420.

[0169] The stop 3450 is fixed to each end of the loader shaft 3430 and rotates together with the loader shaft 3430. The stop 3450 is mainly used to prevent the second guide protrusion 3212 from being pushed, which serves as the rotation axis of the damper member 3210. For example, when the damper member 3210 rotates on the straight segment 3121a via the second guide protrusion 3212, the stop 3450 remains abutting against the second guide protrusion 3212 to prevent the second guide protrusion 3212 from being pushed in a forward and backward direction.

[0170] Figures 24 to 27 The diagram shows the state in which the active air dampers according to the third embodiment of this disclosure are sequentially opened.

[0171] refer to Figures 24 to 27 The fixing unit 3500 can be arranged on the sliding path of the damper member 3210 to prevent the damper member 3210 from being pushed or twisted backward by aerodynamics when the fixing protrusion 3213 protruding from each end of the damper member 3210 is located thereon.

[0172] The fixing unit 3500 may have a fixing groove 3510 corresponding to the fixing protrusion 3213, and the fixing unit 3500 may be made of an elastic material capable of shock absorption.

[0173] The retaining groove 3510 may be recessed only in the portion of the retaining protrusion 3213 into which it is inserted.

[0174] The fixing groove 3510 includes a support part 3511 and a mounting part 3512.

[0175] The support part 3511 is used to support the lower part of the fixing protrusion 3213.

[0176] The mounting portion 3512 is used to mount the outer peripheral surface of the fixing protrusion 3213. The contact surface of the mounting portion 3512 that abuts against the fixing protrusion 3213 may have a shape corresponding to the outer peripheral surface of the fixing protrusion 3213.

[0177] In the following text, according to the third embodiment of the present disclosure, the mechanism for opening the active air damper 3000 is described as follows.

[0178] First: the actuator 3310 of the drive unit 3300 is driven in response to a command from the ECU 10, and the shaft gear 3431 connected to one end of the loader shaft 3430 is connected to the shaft of the actuator 3310 to rotate clockwise (in the negative direction of the Y-axis).

[0179] Secondly, the connecting rod 3420, which is coaxially connected to the shaft gear 3431, rotates clockwise together with the shaft gear 3431. The connecting plate 3440, which is connected to the connecting rod 3420, is pushed backward (along the negative direction of the Y-axis).

[0180] Third: The straight segment 3121a of the first guide protrusion 3211 connected to the connecting plate 3440 passes through the first guide groove 3121 in sequence (see...) Figure 21 ) and curved section 3121b (see Figure 21 Therefore, the damper component 3210 rotates clockwise (along the negative direction of the Y-axis) and gradually opens the external air inlet.

[0181] During this process, when the first guide protrusion 3211 moves along the negative Y-axis through the straight segment 3121a of the first guide groove 3121, the second guide protrusion 3212 moves linearly to the rear end of the second guide groove 3122 (along the negative Y-axis). In this case, the stop 3450 is used to fix the second guide protrusion 3212, so that by rotating the fan-shaped stop structure of the stop 3450, the second guide protrusion 3212 will not be pushed to the end point of the linear movement by external force.

[0182] Then, as the first guide protrusion 3211 moves through the curved section 3121b of the first guide groove 3121, the second guide protrusion 3212 serves as a rotation axis for the damper member 3210, which rotates rearward (in the negative direction of the Y-axis) in place (at the rear end of the second guide groove 3122). The connecting plate 3440 has a hook 3441 that rotates together with the damper member 3210 along with the second guide protrusion 3212 located thereon, thereby assisting in the execution of power transmission.

[0183] Therefore, the active air damper 3000 can effectively control the opening area of ​​the damper component 3210.

[0184] Figures 28 to 30 The diagram shows the state in which the active air dampers according to the third embodiment of this disclosure are sequentially closed.

[0185] refer to Figures 28 to 30 The mechanism for closing the active air damper 3000 according to the third embodiment of this disclosure is as follows.

[0186] First: The actuator 3310 of the drive unit 3300 is actuated in response to a command from the ECU 10, and the shaft gear 3431 connected between one end of the loader shaft 3430 and the shaft of the actuator 3310 rotates counterclockwise (in the positive direction of the Y-axis) together with the shaft of the actuator 3310.

[0187] Secondly, the connecting rod 3420, which is coaxially connected to the shaft gear 3431, rotates counterclockwise together with the shaft gear 3431. The connecting plate 3440, which is connected to the connecting rod 3420, is pulled forward (along the positive direction of the Y-axis).

[0188] Third: The first guide protrusion 3211 connected to the connecting plate 3440 passes sequentially through the curved section 3121b and the straight section 3121a of the first guide groove 3121. Therefore, the damper component 3210 rotates counterclockwise (along the positive direction of the Y-axis) and gradually closes the external air inlet.

[0189] During this process, the second guide protrusion 3212 serves as the rotation axis of the damper component 3210 and rotates in the appropriate position until the first guide protrusion 3211 enters the straight section 3121a from the curved section 3121b of the first guide groove 3121. In this case, the stop 3450 is used to fix the second guide protrusion 3212 so that the second guide protrusion 3212 will not be pushed to the starting point of the linear motion by external force through the fan-shaped stop structure of the rotating stop 3450.

[0190] Then, as the first guide protrusion 3211 moves forward (in the positive direction of the Y-axis) through the straight segment 3121a of the first guide groove 3121, the second guide protrusion 3212 moves linearly to the front end of the second guide groove 3122 (in the positive direction of the Y-axis). As a result, the damper member 3210 returns to its initial position and keeps the external air intake of the grille closed.

[0191] As can be clearly seen from the above description, active air dampers for vehicles can be operated sequentially by controlling the damper components based on a multi-path (bidirectional path) operation structure to improve cooling efficiency and optimize aerodynamic performance.

[0192] In particular, this disclosure provides a structural mechanism that prevents one or more damper components from being pushed by aerodynamics, and at the same time prevents the damper components from twisting in either direction when operated.

[0193] Therefore, even when the vehicle is traveling at high speed, the operating torque of the actuator can be significantly reduced, and the active air damper can be operated more smoothly.

[0194] Furthermore, the advantage of this disclosure is that, since the air intake can be opened and closed sequentially, the active air damper can be used as a variety of external design factors of the vehicle.

[0195] This disclosure is not limited to the above embodiments, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of this disclosure as defined in the appended claims.

Claims

1. An active air damper for a vehicle, comprising: A frame unit having a hollow structure, wherein the horizontal and vertical frames of the frame unit are connected to each other, and the horizontal and vertical frames are configured to be in fluid communication with the external air inlet of the grille. A damper unit having a plurality of damper members rotatably connected to the frame unit, and the damper members being configured to open and close the external air inlet; A drive unit configured to provide driving force to the damper unit; and A link unit is connected between the damper unit and the drive unit to transmit the driving force from the drive unit to the damper unit; The vertical frame includes: A first guide groove has a straight segment and a curved segment extending as a single path, and the first guide groove is configured to guide the opening / closing path of each of the damper components; and The second guide groove has steps spaced apart from the first guide groove and is configured to guide a straight path for each of the damper components.

2. The active air damper according to claim 1, wherein: When the external air inlet is opened, each damper component moves linearly to the straight section of the first guide groove and the second guide groove, and then rotates via the curved section of the first guide groove; and When the external air inlet is closed, each damper component rotates through the curved section of the first guide groove and then returns to its initial position via the straight section of the first guide groove and the second guide groove.

3. The active air damper according to claim 1, wherein each damper component comprises: A first guide protrusion is provided on each end of the damper component and is movable on the first guide groove; and A second guide protrusion is provided on each end of the damper component and is movable on the second guide groove.

4. The active air damper according to claim 3, wherein, When each of the damper components opens and closes the external air inlet, the second guide protrusion is located at the rear end of the second guide groove to serve as a rotation axis for each of the damper components.

5. The active air damper according to claim 1, wherein the drive unit is actuated by an electronic control unit (ECU) to cause the damper component to sequentially open and close the external air inlet.

6. The active air damper according to claim 1, wherein the drive unit comprises: An actuator having a drive shaft; A small drive gear rotates together with the drive shaft; and A rack, which reciprocates vertically on the vertical frame as the drive pinion rotates; The rack includes: A drive tooth is located on a portion of the cross-section on one side of the rack in the width direction and meshes with the drive pinion; and Multiple driven teeth, spaced apart from each other on the opposite side of the rack's width direction, transmit rotational driving force to the link unit.

7. The active air damper according to claim 6, wherein the linking unit comprises: The driven pinion meshes with the driven tooth. A plurality of connecting rods are located at both ends of each of the damper components, wherein each of the connecting rods has a first end that rotates together with the driven pinion. The loader axle, configured to connect the connecting rod, and A connecting plate, configured to connect the second end of each of the connecting rods to a first guide protrusion projecting from each end of each of the damper components; The first end of each of the connecting rods and the connecting plate are rotatably connected to each other.

8. The active air damper according to claim 6, wherein: The driving unit and the linking unit are embedded in the vertical frame; as well as Each of the drive unit and the link unit has a portion that protrudes from the vertical frame and is covered by a cover.

9. The active air damper of claim 8, wherein the cover is fastened to the front of the vertical frame by snap-fit.

10. An active air damper for a vehicle, comprising: The damper unit has multiple damper components configured to sequentially open and close the external air intake of the grille located at the front of the vehicle according to preset logic. A drive unit, configured to provide driving force to the damper units and control the opening area of ​​each damper component, and A link unit configured to transmit the driving force from the drive unit to the damper unit; A first guide groove has a straight section and a curved section that extend as a single path, and the first guide groove is configured to guide the opening / closing path of each of the damper components; and The second guide groove, having steps spaced apart from the first guide groove, is configured to guide a straight path for each of the damper components. The driving unit includes: Actuator, which has a drive shaft, The drive pinion rotates together with the drive shaft, and The rack reciprocates vertically as the drive pinion rotates.

11. The active air damper according to claim 10, wherein the rack comprises: A drive tooth is located on a portion of the cross-section on one side of the rack in the width direction and meshes with the drive pinion; and Multiple driven teeth, spaced apart from each other on the opposite side of the rack's width direction, transmit rotational driving force to the link unit.

12. The active air damper according to claim 11, wherein the linking unit comprises: The driven pinion meshes with the driven tooth. A plurality of connecting rods are located at both ends of each of the damper components, wherein each of the connecting rods has a first end that rotates together with the driven pinion. The loader axle, configured to connect the connecting rod, and A connecting plate, configured to connect the second end of each of the connecting rods to a first guide protrusion projecting from each end of each of the damper components; The first end of the connecting rod and the connecting plate are rotatably connected to each other.

13. An active air damper for a vehicle, comprising: A frame unit having a hollow structure, wherein the horizontal and vertical frames of the frame unit are connected to each other, and the horizontal and vertical frames are configured to be in fluid communication with an external air intake of a grille located at the front of the vehicle. A damper unit having multiple damper components configured to sequentially open and close the external air inlet by sliding in a forward and backward direction and rotating at a point on the vertical frame of the frame unit; A drive unit configured to provide driving force to the damper unit; A link unit configured to transmit the driving force from the drive unit to the damper unit; and A fixing unit is located on the sliding path of each of the damper components to prevent each of the damper components from being pushed backward or twisted by aerodynamics when the fixing protrusions protruding from each end of each of the damper components are located thereon. The vertical frame includes: A first guide groove has a straight segment and a curved segment extending as a single path, and the first guide groove is configured to guide the opening / closing path of each of the damper components; and The second guide groove has steps spaced apart from the first guide groove and is configured to guide a straight path for each of the damper components.

14. The active air damper according to claim 13, wherein the fixing unit has a fixing groove that can be fixed to a corresponding fixing protrusion.

15. The active air damper of claim 13, wherein the fixing unit comprises a shock-absorbing elastic material.

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