Active grille shutter

Abstract

The application discloses an active air inlet grille, which comprises a frame, blades and a motor, the blades are installed in the frame, the motor is used for driving the blades to rotate, further comprises a torsion bar, an inclined pull rod and a straight pull rod, the motor is directly connected with the torsion bar, two ends of the torsion bar are connected with one of the inclined pull rods respectively, two of the inclined pull rods are connected with one of the straight pull rods respectively, each of the straight pull rods is connected with a plurality of the blades, the blades are fixedly connected with the straight pull rods, and the blades are rotatably connected with the frame; when the motor rotates, the motor is used for driving the torsion bar to rotate, the torsion bar drives two of the inclined pull rods to move along the inclined direction, the inclined pull rods drive the straight pull rods to move along the straight line, and the straight pull rods drive the blades to rotate. The application drives two groups of blades to rotate simultaneously through one motor, the transmission path between the motor and the blades is shortened, the synchronism of the blades is ensured, and single-motor driving is beneficial to cost reduction.

Description

Technical Field

[0001] This invention relates to the technical field of vehicles, and more particularly to an active air intake grille. Background Technology

[0002] The existing active air intake grille at the front of the vehicle consists of multiple blades. The motor is directly connected to the active blades, and the rotation shaft of the active blades is collinear with the output shaft of the motor. After the motor drives the active blades to rotate, the active blades then drive multiple other driven blades to rotate through the connecting rod. The driven blades are parallel to the output shaft of the motor.

[0003] Existing active grille shutters have a relatively long drive path, from the motor to the active blades and then to the driven blades, with delays in the movement between multiple blades. When there are many blades, two motors may be needed to drive two sets of blades separately, increasing costs. Furthermore, if one blade fails to drive properly, the subsequent blades will also fail to move correctly.

[0004] Therefore, it is necessary to design an active air intake grille with higher synchronization and lower cost. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an active air intake grille with higher synchronization and lower cost.

[0006] The present invention provides an active air intake grille, comprising a frame, blades, and a motor. The blades are installed in the frame, and the motor drives the blades to rotate. The grille also includes a torsion bar, a tie rod, and a straight rod. The motor is directly connected to the torsion bar, and each end of the torsion bar is connected to a tie rod. Each tie rod is connected to a straight rod, and multiple blades are connected to each straight rod. The blades are fixedly connected to the straight rods, and the blades are also rotatably connected to the frame.

[0007] When the motor rotates, it drives the torsion bar to rotate, which in turn drives the two tie rods to move diagonally. The tie rods then drive the straight connecting rod to move linearly, and the straight connecting rod drives the blade to rotate.

[0008] Furthermore, the blades are arranged at an angle relative to the straight tie rod, and the two sets of blades are arranged symmetrically to the left and right of the motor.

[0009] Furthermore, the blades are arranged vertically relative to the straight tie rod, and the blades are arranged vertically or horizontally.

[0010] Furthermore, the frame is an integral frame, and multiple bearing seats are provided on the inner frame of the frame. Bearing sleeves are fitted on the bearing seats and inserted into the blades.

[0011] Furthermore, the blade is provided with a rotating sleeve, and the rotating sleeve has an insertion hole;

[0012] The bearing sleeve includes an insertion end and a stepped surface. The insertion end is inserted into the insertion hole. The stepped surface is provided with multiple spherical surfaces, which contact the end face of the rotating shaft sleeve.

[0013] Furthermore, the end of the torsion bar is provided with a double-ear protrusion, and the inner side of the double-ear protrusion is provided with an inclined wedge protrusion. The end of the inclined tie rod is provided with a concave platform that cooperates with the inclined wedge protrusion. After the inclined wedge protrusion and the concave platform are connected by a ball head pin, the end of the inclined tie rod can swing in the double-ear protrusion.

[0014] Furthermore, the torsion bar is provided with a rotation center, the motor is connected to the rotation center, and a limiting part is provided on the outer side of the rotation center, the limiting part being used to limit the rotation angle of the torsion bar relative to the motor.

[0015] Furthermore, one side of the cross-section of the blade is provided with a lip, and the other side is provided with a platform, and the lip of the adjacent blade can fit tightly with the platform.

[0016] Furthermore, the ends of the platform are folded outwards.

[0017] Furthermore, the outer side of the blade's cross-section is provided with a wind-breaking end face.

[0018] The above technical solution has the following beneficial effects:

[0019] This invention uses a single motor to drive two sets of blades to rotate simultaneously, shortening the transmission path between the motor and the blades and ensuring blade synchronization. Single-motor drive helps reduce costs. Attached Figure Description

[0020] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0021] Figure 1 This is a perspective view of an active air intake grille according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the active air intake grille with the frame omitted in one embodiment of the present invention;

[0023] Figure 3 This is a partially enlarged view of the torsion bar and tie bar in one embodiment of the present invention;

[0024] Figure 4 This is a state diagram of the blades when they are closed in one embodiment of the present invention;

[0025] Figure 5 This is a state diagram of the blades when they are open in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the inclined arrangement of the blades and the straight tie rod in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of another embodiment of the present invention, showing the blades arranged perpendicularly to the straight tie rod and along the vertical direction;

[0028] Figure 8 This is a schematic diagram of another embodiment of the present invention, showing the blades and the straight tie rod arranged perpendicularly and horizontally.

[0029] Figure 9 This is a schematic diagram of the frame in one embodiment of the present invention;

[0030] Figure 10 This is a partial enlarged view of the connection between the blade and the frame in one embodiment of the present invention;

[0031] Figure 11 This is a partially enlarged view of the bearing sleeve in one embodiment of the present invention;

[0032] Figure 12 This is an enlarged view of the end of the torsion bar in one embodiment of the present invention;

[0033] Figure 13 This is a partial enlarged view of the connection between the torsion bar and the tie bar in one embodiment of the present invention;

[0034] Figure 14 This is an enlarged view of a torsion bar in one embodiment of the present invention;

[0035] Figure 15 This is a cross-sectional view of the blade in the closed state according to an embodiment of the present invention;

[0036] Figure 16 This is a cross-sectional view of the blade in the open state in one embodiment of the present invention.

[0037] Reference table for attached figures:

[0038] Frame 1: Bearing housing 11, bearing sleeve 12, insertion end 121, stepped surface 122, spherical surface 123;

[0039] Blade 2: Shaft sleeve 21, insertion hole 22, lip 23, platform 24, wind-breaking end face 25, pulling part 26, rotating shaft 27, flange 241;

[0040] Motor 3;

[0041] Torsion bar 4: double lugs 41, rotation center 42, limiting part 43;

[0042] Diagonal tie rod 5: Recessed platform 51;

[0043] Straight pull rod 6. Detailed Implementation

[0044] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0045] It is readily understood that, based on the technical solution of this invention, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of the invention.

[0046] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0047] In some embodiments of the present invention, such as Figure 1-3 As shown, the active air intake grille includes a frame 1, blades 2, and a motor 3. The blades 2 are installed in the frame 1, and the motor 3 drives the blades 2 to rotate. It also includes a torsion bar 4, a tie rod 5, and a straight rod 6. The rotating shaft of the motor 3 is directly connected to the torsion bar 4. Each end of the torsion bar 4 is connected to a tie rod 5, and each tie rod 5 is connected to a straight rod 6. Multiple blades 2 are connected to each straight rod 6. The blades 2 are fixedly connected to the straight rod 6, and the blades 2 are also rotatably connected to the frame 1.

[0048] When motor 3 rotates, motor 3 drives torsion bar 4 to rotate. Torsion bar 4 drives two diagonal tie rods 5 to move diagonally. Diagonal tie rods 5 drive straight tie rod 6 to move linearly. Straight tie rod 6 drives blade 2 to rotate.

[0049] Specifically, the frame 1 is installed on the front of the vehicle body, the blades 2 include two sets, the two sets of blades 2 are symmetrically arranged on the left and right sides of the frame 1, and the motor 3 is located between the two sets of blades 2.

[0050] like Figure 2 As shown, a motor 3 drives a torsion bar 4 to rotate. A tie rod 5 is connected to each end of the torsion bar 4. One end of the tie rod 5 is connected to the end of the torsion bar 4, and the other end is connected to one end of a straight tie rod 6. When the torsion bar 4 rotates, it causes the tie rod 5 to move diagonally, and the tie rod 5 then causes the straight tie rod 6 to move linearly.

[0051] like Figure 4-5As shown, the rotating shaft 27 of blade 2 is rotatably connected to frame 1. Blade 2 also includes a pulling part 26, which is offset from the rotating shaft by a certain distance and is fixedly connected to the straight pull rod 6. When the straight pull rod 6 moves along... Figure 4 When the blade moves in the direction of the dotted line, it drives the pulling part 26 to move together. The pulling part 26 drives the blade 2 to rotate around the rotating shaft 27, thereby closing or opening the blade 2. Figure 4 Blade 2 is rotated to the closed position. Figure 5 The blade 2 is rotated to the open position.

[0052] In this embodiment, the central axis of the motor 3 is not on the same straight line as the rotation axis 27 of the blade 2. One motor 3 can drive two sets of blades 2 to move synchronously at the same time, resulting in better synchronization of the blades 2. If one blade 2 is damaged, it will not affect the movement of the other blades 2. In addition, the single-motor drive method is also conducive to cost reduction.

[0053] Furthermore, such as Figure 2 As shown, blade 2 is arranged at an angle relative to the straight tie rod 6, and the two sets of blade 2 are arranged symmetrically to the left and right of the motor 3.

[0054] Specifically, the two sets of blades 2 are arranged symmetrically from left to right. The blades 2 of the left set are tilted to the left, and the blades 2 of the right set are tilted to the right. The tilted arrangement of the blades makes it easier to adapt to the curvature of the front of the car. The arrangement of the tilted blades also brings a certain aesthetic appeal.

[0055] In this embodiment, as Figure 6 As shown, torsion bar 4 and diagonal tie bar 5 are located in a vertical plane, and straight tie bar 6 extends horizontally. Motor 3 is installed at the center of torsion bar 4. Torsion bar 4 rotates around its own center in the vertical plane. Torsion bar 4 pulls diagonal tie bar 5, diagonal tie bar 5 pulls straight tie bar 6, but straight tie bar 6 does not move horizontally, but moves in a straight line in XYZ space.

[0056] Optionally, such as Figure 7 As shown, blade 2 is arranged vertically relative to the tie rod 6, and blade 2 is vertically aligned. Torsion bar 4 and diagonal tie rod 5 are located in the vertical plane, and tie rod 6 also extends horizontally. The difference is that blade 2 is arranged vertically.

[0057] Optionally, such as Figure 8 As shown, the straight tie rod 6 extends vertically, the diagonal tie rod 5 drives the straight tie rod 6 to move up and down, and the blades 2 are arranged horizontally. In one embodiment of the present invention, as... Figure 9-10 As shown, the frame 1 is an integral frame. Multiple bearing seats 11 are provided on the inner frame of the frame 1. Bearing sleeves 12 are fitted on the bearing seats 11 and inserted into the blades 2.

[0058] Specifically, when the blade 2 is arranged inclined longitudinally or vertically, multiple bearing seats 11 are spaced apart on the upper or lower edge of the frame 1, and a bearing sleeve 12 is fitted on each bearing seat 11. The bearing sleeve 12 is inserted into the rotating shaft sleeve 21 of the blade 2. When the blade 2 is driven by the straight tie rod 6, the blade 2 rotates around the central axis of the bearing sleeve 12, and the central axis of the bearing sleeve 12 is coaxial with the rotating shaft 27 of the blade 2.

[0059] Furthermore, such as Figure 10-11 As shown, a rotating sleeve 21 is provided on the blade 2, and an insertion hole 22 is provided on the rotating sleeve 21;

[0060] The bearing sleeve 12 includes an insertion end 121 and a stepped surface 122. The insertion end 121 is inserted into the insertion hole 22. The stepped surface 122 is provided with a plurality of spherical surfaces 123, which are in contact with the end face of the rotating sleeve 21.

[0061] The central axis of the insertion hole 22 is coaxial with the rotation axis 27 of the blade 2. The insertion end 121 is inserted into the insertion hole 22. The stepped surface 122 is located below the insertion end 121, and the cross-sectional area of ​​the stepped surface 122 is larger than that of the insertion end 121. Multiple spherical surfaces 123 are provided on the stepped surface 122, and the spherical surfaces 123 make point contact with the end face of the rotating sleeve 21. Thus, when the blade 2 rotates, the end face of the rotating sleeve 21 slides relative to the spherical surfaces 123, reducing operational friction. Furthermore, because the contact area between the spherical surfaces 123 and the end face of the rotating sleeve 21 is small, dust accumulation is reduced, providing a certain degree of dust removal and improving operational durability.

[0062] Furthermore, such as Figure 12-13 As shown, the end of the torsion bar 4 is provided with a double-ear protrusion 41, and the inner side of the double-ear protrusion 41 is provided with an inclined wedge protrusion 411. The end of the inclined tie rod 5 is provided with a concave platform 51 that cooperates with the inclined wedge protrusion 411. After the inclined wedge protrusion 411 and the concave platform 51 are connected by a ball head pin (not shown), the end of the inclined tie rod 5 can swing in the double-ear protrusion 41.

[0063] Due to the cooperation between the wedge boss 411 and the concave platform 51, the tie rod 5 has a certain degree of freedom relative to the torsion bar 4, which avoids the tie rod 5 getting stuck during the process of the torsion bar 4 driving the tie rod 5.

[0064] Furthermore, such as Figure 14 As shown, the torsion bar 4 is provided with a rotation center 42, the motor 3 is connected to the rotation center 42, and a limiting part 3 is provided on the outside of the rotation center 42. The limiting part 43 is used to limit the rotation angle of the torsion bar 4 relative to the motor 3.

[0065] Specifically, there are two limiting parts 43, symmetrically arranged on the left and right sides of the rotation center 42. The limiting parts 43 protrude outward from the surface of the torsion bar 4 and cooperate with the corresponding structure on the motor 3. When the torsion bar 4 rotates to a set angle, the limiting parts 43 contact the corresponding structure on the motor 3, thereby limiting the further rotation of the torsion bar 4, thereby limiting the rotation angle of the blade 2, and ultimately limiting the position of the blade 2 when it is at its maximum opening or closing.

[0066] In one embodiment of the present invention, as Figure 15-16 As shown, one side of the cross-section of the blade 2 is provided with a lip 23, and the other side is provided with a platform 24. The lip 23 and the platform 24 of adjacent blades 2 can fit tightly together.

[0067] Specifically, the lip edge 23 is made of soft rubber, while the platform 24 is made of hard material. For example... Figure 15 As shown, when the adjacent blade 2 rotates to the closed state, the lip 23 fits tightly against the platform 24, increasing the airtightness of the blade 2 when it is closed.

[0068] Furthermore, such as Figure 15 As shown, the end of platform 24 folds outward. Specifically, the end of platform 24 folds towards the front of the vehicle to form a flange 241, thereby forming an "air wall" between adjacent blades 2 to block and slow down the leaking airflow, reduce the leakage amount, and prevent the generation of wind noise.

[0069] Furthermore, such as Figure 15-16 As shown, the outer side of the cross-section of blade 2 is provided with a wind-breaking end face 25.

[0070] Specifically, the wind-breaking end face 25 has a pointed structure facing the front of the vehicle (i.e., the direction of the incoming wind), which effectively reduces wind resistance (both when the blades are open and closed).

[0071] Preferably, the wind-breaking end face 25 has two locations on the blade 2, one near the lip 23 and the other near the platform 24.

[0072] In this embodiment, the platform 24 is recessed relative to the wind-breaking end face 25 in the direction towards the rear of the vehicle, while the wind-breaking end face 25 is convex in the direction towards the front of the vehicle, making the cross-section of the entire blade 2 S-shaped. Unlike existing blades with an arc-shaped cross-section, the blade in this embodiment has superior wind resistance and airtightness.

[0073] The present invention has the following advantages:

[0074] 1. Torsion bars, diagonal bars, and straight bars form a multi-dimensional motion linkage mechanism. The motor output shaft and the blade rotation axis are not parallel, while the blade rotation axis and the motor output shaft are spatially intersecting, breaking through the existing parallel / coaxial limitations.

[0075] 2. The motor can achieve synchronous movement of multiple blades, with good synchronization and lower cost.

[0076] 3. The S-shaped cross-section design of the blades improves the airtightness when the blades are closed and reduces wind noise.

[0077] 4. Integrated frame, which improves strength while reducing weight.

[0078] The above description is merely the principle and preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of the present invention, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. An active grille shutter comprising a frame, a blade mounted in the frame, and a motor for driving the blade to rotate, characterized in that, The frame is integrally formed, and a plurality of bearing seats are arranged on an inner frame of the frame. The motor is used to drive the torsion rod to rotate, the torsion rod drives two oblique pull rods to move obliquely, the oblique pull rods drive the straight pull rods to move linearly, and the straight pull rods drive the blades to rotate. The cross section of the blade is provided with a lip on one side and a platform on the other side.

2. The active grille shutter of claim 1, wherein, The blades are arranged obliquely relative to the straight pull rods, and two groups of the blades are arranged symmetrically relative to the motor.

3. The active grille shutter of claim 1, wherein, The blades are arranged perpendicularly relative to the straight pull rods, and the blades are arranged vertically or horizontally.

4. The active grille shutter of claim 1, wherein, The frame is integrally formed, and a plurality of bearing seats are arranged on an inner frame of the frame.

5. The active grille shutter of claim 4, wherein, The blade is provided with a rotating shaft sleeve, and the rotating shaft sleeve is provided with a insertion hole. The bearing sleeve comprises an insertion end and a stepped surface, the insertion end is inserted into the insertion hole, and the stepped surface is provided with a plurality of spherical surfaces in contact with the end surface of the rotating shaft sleeve.

6. The active grille shutter of claim 1, wherein, The end of the torsion rod is provided with a double-ear protrusion, the inner side of the double-ear protrusion is provided with a wedge-shaped boss, the end of the oblique pull rod is provided with a recessed table matched with the wedge-shaped boss, and the end of the oblique pull rod can swing in the double-ear protrusion after the wedge-shaped boss and the recessed table are connected through a ball head.

7. The active grille shutter of claim 1, wherein, The torsion rod is provided with a rotating center, the motor is connected with the rotating center, the outer side of the rotating center is provided with a limiting portion, and the limiting portion is used to limit the rotation angle of the torsion rod relative to the motor.

8. The active grille shutter of claim 1, wherein, The outer side of the cross section of the blade is provided with a wind-breaking end surface.

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