WO2019205649A1 - Active grille shutter with reduced friction on blade shaft - Google Patents

Active grille shutter with reduced friction on blade shaft Download PDF

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Publication number
WO2019205649A1
WO2019205649A1 PCT/CN2018/119712 CN2018119712W WO2019205649A1 WO 2019205649 A1 WO2019205649 A1 WO 2019205649A1 CN 2018119712 W CN2018119712 W CN 2018119712W WO 2019205649 A1 WO2019205649 A1 WO 2019205649A1
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WO
WIPO (PCT)
Prior art keywords
grille shutter
active grille
actuator
grooves
blade
Prior art date
Application number
PCT/CN2018/119712
Other languages
French (fr)
Inventor
Chen Zhang
Xiaogang GUI
Original Assignee
Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd.
Compagnie Plastic Omnium
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd., Compagnie Plastic Omnium filed Critical Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd.
Publication of WO2019205649A1 publication Critical patent/WO2019205649A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52—Radiator or grille guards ; Radiator grilles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52—Radiator or grille guards ; Radiator grilles
    • B60R2019/525—Radiator grilles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

  • the invention belongs to the technical field of automobile parts, and relates to an active grille shutter with reduced friction on the blade shaft.
  • the torque for a grille shutter is generally delivered by an actuator to overcome both the torque created by wind resistance and the friction produced when the blade rotates, so as to drive the blade to rotate.
  • relatively high friction is produced on the blade shaft, thus creating a great charge on the actuator.
  • the invention provides an active grille shutter capable of reducing friction on the blade shaft.
  • An active grille shutter capable of reducing friction on the blade shaft comprises a blade, a grille body, and an actuator cover.
  • the grille body is provided with a protection cover cooperating with the actuator cover to form a hollow protective structure.
  • the protection cover and the actuator cover define a circular hole through which the protective structure communicates with the exterior.
  • the blade is provided with a rotating shaft held within the circular hole. The revolution surface of the rotating shaft is a convex surface.
  • the revolution surface of the rotating shaft is provided with a set of grooves.
  • the set of grooves is two rows of rectangular grooves arranged symmetrically.
  • the four corners of the rectangular grooves are arc-shaped, and the four side faces of the rectangular grooves are in the shape of a three-step surface with a uniform gradient.
  • the set of grooves is two rows of diamond-shaped grooves arranged symmetrically, between which is provided yet another row of diamond grooves.
  • the four corners of the diamond-shaped grooves are arc-shaped, and the four side faces of the diamond-shaped grooves are in the shape of a three-step surface with a uniform gradient.
  • the rotating shaft is of a quasi-cylindrical structure, the two sides of the rotating shaft are symmetric circles, and the middle part of its revolution surface having the largest degree of convexity.
  • the protection cover and the actuator cover are connected via snaps and/or fixtures.
  • the actuator cover is provided with a first half-hole
  • the protection cover is provided with a second half-hole, the first half-hole and the second half-hole cooperating with each other to form the circular hole.
  • the invention is of a simple structure and solves the problem of excessive frictions during the rotation of the blade shaft by setting the convex surface.
  • Figure 1 is a schematic view of the structure of an active grille shutter according to a preferred embodiment of the invention
  • Figure 2 is a schematic view of a part of Figure 1;
  • Figure 3 is a sectional view of the protective structure of Figure 2;
  • Figure 4 shows the bottom connection part of the actuator cover and the grille body
  • Figure 5 shows the side connection part of the actuator cover and the grille body
  • Figure 6 is a partial schematic view of the structure of the blade
  • FIG 7 shows the rotating shaft in the Figure 6
  • Figure 8 shows a rotating shaft according to another preferred embodiment.
  • an active grille shutter with reduced friction on the blade shaft provided by the invention comprises: a blade 1, an actuator 2, a grille body 3, and an actuator cover 4.
  • the middle part of the grille body 3 is provided with a protection cover 31 that cooperates with the actuator cover 4 to form a hollow protective structure 41 inside which the actuator 2 is housed, as shown in Fig. 3.
  • the actuator 2 is connected with the blade 1 to deliver a torque and drive the blade 1 to rotate.
  • the grille body 3 and the actuator cover 4 are connected via snaps and fixtures. Specifically, as shown in Fig. 4, the grille body 3 is provided with snaps 32 that cooperate with the bottom of the actuator cover 4 to achieve the fixation of the relative position between the actuator cover 4 and the grille body 3. As shown in Fig. 5, both the actuator cover 4 and the grille body 3 are provided with threaded through-holes, the actuator cover 4 and the grille body 3 are thus fastened together through screws 42.
  • a first half-hole provided on the flank of the actuator cover 4 and on the edge in contact with the protection cover 31 cooperates with a corresponding second half-hole provided on the protection cover 31 so as to form a circular hole 311.
  • the blade 1 at least partially passes through the circular hole 311 and extend into the protective structure 41.
  • the blade 1 is provided with a shaft 11 and a latch structure 12, which are sequentially fixedly connected.
  • the shaft 11 is held within the circular hole 311.
  • the latch structure 12 is connected with the output end of the actuator 2.
  • the shaft 11 rotates in a synchronized manner with the latch structure 12, so as to drive the blade 1 to collectively rotate.
  • the shaft 11 is of a quasi-cylindrical structure, such as in the shape of a cup or a drum. Its two sides are symmetrical circles, and are fixedly connected with, respectively, the latch structure 12 and the blade 1.
  • the external surface (here it would be understood by those skilled in the art that by “the external surface” we refer to the revolution surface of the cylindrical shaft 11) of the shaft is a convex surface
  • the middle part of the external surface has the largest degree of convexity (here it would be understood by those skilled in the art that the middle part is the part of shaft 11 in contact with the circular hole 311 during the rotation of the shaft) .
  • the external surface of the shaft 11 is provided with a first set of grooves 111 for reducing the contact surface between the shaft 11 and the circular hole 311 during rotation so as to reduce frictions.
  • the first groove set 111 is configured in a shape of two-row rectangular grooves of the same structure, symmetrically arranged and uniformly distributed on the external surface of the shaft 11. As shown in Fig. 7, the four corners of these rectangles are arc-shaped, and the four side faces of the rectangular grooves are in the shape of a three-step surface with a uniform gradient.
  • the external surface of the shaft 11 is provided with a second set of grooves 112, being configured in a shape of two-row symmetrically arranged diamond-shaped grooves, between which are uniformly provided with a row of diamond-shaped grooves with larger size.
  • the four corners of the diamond-shaped grooves are arc-shaped, and the four side faces of the diamond-shaped grooves are in the shape of a three-step surface with a uniform gradient.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

An active grille shutter, capable of reducing frictions on a blade shaft (11), comprises a blade (1), a grille body (3), and an actuator cover (4). The grille body (3) is provided with a protection cover (31) cooperating with the actuator cover (4) to form a hollow protective structure (41). The protection cover (31) and the actuator cover (4) define a circular hole (311). The protective structure (41) communicates with the exterior through the circular hole (311). The blade (1) is provided with a rotating shaft (11) holding within the circular hole (311). The external surface of the shaft (11) is a convex surface. The active grille shutter solves the problem of excessive frictions when the blade shaft (11) moves by providing the blade shaft (11) with a convex surface.

Description

[Title established by the ISA under Rule 37.2] ACTIVE GRILLE SHUTTER WITH REDUCED FRICTION ON BLADE SHAFT Field of the Invention
The invention belongs to the technical field of automobile parts, and relates to an active grille shutter with reduced friction on the blade shaft.
Background of the Invention
As is well known, when a car moves at a high speed, the torque required for manipulating an active grille shutter is very large. Therefore, it appears very necessary to efficiently transmit an effective torque and to reduce the torque required for rotating the blade. The torque for a grille shutter is generally delivered by an actuator to overcome both the torque created by wind resistance and the friction produced when the blade rotates, so as to drive the blade to rotate. In the prior art, generally, relatively high friction is produced on the blade shaft, thus creating a great charge on the actuator.
Summary of the Invention
To solve the above-described drawback of high friction when the blade shaft moves, the invention provides an active grille shutter capable of reducing friction on the blade shaft.
An active grille shutter capable of reducing friction on the blade shaft according to the invention comprises a blade, a grille body, and an actuator cover. The grille body is provided with a protection cover cooperating with the actuator cover to form a hollow protective structure. The protection cover and the actuator cover define a circular hole through  which the protective structure communicates with the exterior. The blade is provided with a rotating shaft held within the circular hole. The revolution surface of the rotating shaft is a convex surface.
Preferably, the revolution surface of the rotating shaft is provided with a set of grooves.
Preferably, the set of grooves is two rows of rectangular grooves arranged symmetrically.
Preferably, the four corners of the rectangular grooves are arc-shaped, and the four side faces of the rectangular grooves are in the shape of a three-step surface with a uniform gradient.
Preferably, the set of grooves is two rows of diamond-shaped grooves arranged symmetrically, between which is provided yet another row of diamond grooves.
Preferably, the four corners of the diamond-shaped grooves are arc-shaped, and the four side faces of the diamond-shaped grooves are in the shape of a three-step surface with a uniform gradient.
Preferably, the rotating shaft is of a quasi-cylindrical structure, the two sides of the rotating shaft are symmetric circles, and the middle part of its revolution surface having the largest degree of convexity.
Preferably, the protection cover and the actuator cover are connected via snaps and/or fixtures.
Preferably, the actuator cover is provided with a first half-hole, and the protection cover is provided with a second half-hole, the first half-hole and the second half-hole cooperating with each other to form the circular hole.
The invention is of a simple structure and solves the problem of excessive frictions during the rotation of the blade shaft by setting the convex surface.
Description of the Drawings
Figure 1 is a schematic view of the structure of an active grille shutter according to a preferred embodiment of the invention;
Figure 2 is a schematic view of a part of Figure 1;
Figure 3 is a sectional view of the protective structure of Figure 2;
Figure 4 shows the bottom connection part of the actuator cover and the grille body;
Figure 5 shows the side connection part of the actuator cover and the grille body;
Figure 6 is a partial schematic view of the structure of the blade;
Figure 7 shows the rotating shaft in the Figure 6; and
Figure 8 shows a rotating shaft according to another preferred embodiment.
Detailed Description of the Invention
The technical solution of the invention will be described hereinafter in detail in reference to specific embodiments of the invention. However, the embodiments below are merely used to understand the invention, and cannot limit the invention. The embodiments of the invention and the characteristics thereof can be combined with each other. The invention can be implemented in various different ways that are defined and  covered by the claims.
As shown in Figs. 1 to 2, an active grille shutter with reduced friction on the blade shaft provided by the invention comprises: a blade 1, an actuator 2, a grille body 3, and an actuator cover 4. The middle part of the grille body 3 is provided with a protection cover 31 that cooperates with the actuator cover 4 to form a hollow protective structure 41 inside which the actuator 2 is housed, as shown in Fig. 3. The actuator 2 is connected with the blade 1 to deliver a torque and drive the blade 1 to rotate.
The grille body 3 and the actuator cover 4 are connected via snaps and fixtures. Specifically, as shown in Fig. 4, the grille body 3 is provided with snaps 32 that cooperate with the bottom of the actuator cover 4 to achieve the fixation of the relative position between the actuator cover 4 and the grille body 3. As shown in Fig. 5, both the actuator cover 4 and the grille body 3 are provided with threaded through-holes, the actuator cover 4 and the grille body 3 are thus fastened together through screws 42. In the assembled status, a first half-hole provided on the flank of the actuator cover 4 and on the edge in contact with the protection cover 31 cooperates with a corresponding second half-hole provided on the protection cover 31 so as to form a circular hole 311. As shown in Fig. 3, the blade 1 at least partially passes through the circular hole 311 and extend into the protective structure 41.
As shown in Fig. 6, the blade 1 is provided with a shaft 11 and a latch structure 12, which are sequentially fixedly connected. In reference to Fig. 3, the shaft 11 is held within the circular hole 311. The latch structure 12 is connected with the output end of the actuator 2. When the actuator 2 delivers a torque, the shaft 11 rotates in a synchronized manner with the latch structure 12, so as to drive the blade 1 to collectively rotate.  As shown in Fig. 7, the shaft 11 is of a quasi-cylindrical structure, such as in the shape of a cup or a drum. Its two sides are symmetrical circles, and are fixedly connected with, respectively, the latch structure 12 and the blade 1. The external surface (here it would be understood by those skilled in the art that by “the external surface” we refer to the revolution surface of the cylindrical shaft 11) of the shaft is a convex surface, and the middle part of the external surface has the largest degree of convexity (here it would be understood by those skilled in the art that the middle part is the part of shaft 11 in contact with the circular hole 311 during the rotation of the shaft) . When the shaft 11 rotates in a synchronized manner with the latch structure 12, relative rotation occurs merely between the convex surface of the middle part of the external surface of the shaft and the internal surface of the circular hole 311, thus reducing the contact surface between the shaft 11 and the circular hole 311 and accordingly reducing frictions.
The external surface of the shaft 11 is provided with a first set of grooves 111 for reducing the contact surface between the shaft 11 and the circular hole 311 during rotation so as to reduce frictions. In the present embodiment, the first groove set 111 is configured in a shape of two-row rectangular grooves of the same structure, symmetrically arranged and uniformly distributed on the external surface of the shaft 11. As shown in Fig. 7, the four corners of these rectangles are arc-shaped, and the four side faces of the rectangular grooves are in the shape of a three-step surface with a uniform gradient.
In another preferred embodiment, the external surface of the shaft 11 is provided with a second set of grooves 112, being configured in a shape of two-row symmetrically arranged diamond-shaped grooves, between which are uniformly provided with a row of diamond-shaped grooves with larger size. As shown in Fig. 8, the four corners of the  diamond-shaped grooves are arc-shaped, and the four side faces of the diamond-shaped grooves are in the shape of a three-step surface with a uniform gradient.
What has been described above are merely preferred embodiments of the invention, and is not to limit the scope of the invention. The embodiments of the invention described above can be subject to various modifications. All simple, equivalent modifications and embellishments made based on the contents of the claims and the specification of the invention fall within the scope of protection of the claims of the invention. What has not been described in detail in the invention is conventional technology.

Claims (10)

  1. An active grille shutter including a blade (1) , an actuator (2) , and a hollow protective structure (41) inside which the actuator (2) is housed, characterized in that, the protective structure (41) comprises a circular hole (311) through which the protective structure (41) communicates with the exterior, and the blade (1) is provided with a rotating shaft (11) held within the circular hole (311) , and the revolution surface of the rotating shaft (11) being a convex surface.
  2. The active grille shutter according to claim 1, further including a grille body (3) and an actuator cover (4) , wherein the grille body (3) is provided with a protection cover (31) cooperating with the actuator cover (4) to form the hollow protective structure (41) , and the protection cover (31) and the actuator cover (4) together defining the circular hole (311) .
  3. The active grille shutter according to claim 1 or 2, wherein the revolution surface of the rotating shaft (11) is provided with a set of grooves (111, 112) .
  4. The active grille shutter according to claim 3, wherein the set of grooves (111) is two rows of rectangular grooves arranged symmetrically.
  5. The active grille shutter according to claim 4, wherein four corners of the rectangular grooves (111) are arc-shaped, and four side faces of the rectangular grooves (111) are in the shape of a three-step surface with a uniform gradient.
  6. The active grille shutter according to claim 3, wherein the set of grooves (112) is two rows of diamond-shaped grooves arranged symmetrically, between which is provided yet another row of  diamond-shaped grooves.
  7. The active grille shutter according to claim 6, wherein four corners of the diamond-shaped grooves (112) are arc-shaped, and four side faces of the diamond-shaped grooves (112) are in the shape of a three-step surface with a uniform gradient.
  8. The active grille shutter according to claim 1 or 2, wherein the rotating shaft (11) is of a quasi-cylindrical structure, the two sides of the rotating shaft (11) being symmetric circles, the middle part of the revolution surface having the largest degree of convexity.
  9. The active grille shutter according to claim 2, wherein the protection cover (31) and the actuator cover (4) are connected via snaps and/or fixtures.
  10. The active grille shutter according to claim 2, wherein the actuator cover (4) is provided with a first half-hole, and the protection cover (31) is provided with a second half-hole, the first half-hole and the second half-hole cooperating with each other to form the circular hole (311) .
PCT/CN2018/119712 2018-04-23 2018-12-07 Active grille shutter with reduced friction on blade shaft WO2019205649A1 (en)

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CN201820580602.2 2018-04-23
CN201820580602.2U CN208085478U (en) 2018-04-23 2018-04-23 A kind of active air-inlet grille reducing blade rotor friction

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208085478U (en) * 2018-04-23 2018-11-13 延锋彼欧汽车外饰系统有限公司 A kind of active air-inlet grille reducing blade rotor friction

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CN206589833U (en) * 2017-03-02 2017-10-27 广州小鹏汽车科技有限公司 It is a kind of to reduce the active air-inlet grille of windage
CN206781527U (en) * 2017-04-26 2017-12-22 常熟安通林汽车饰件有限公司 Air-inlet grille for automobile
CN108454384A (en) * 2018-04-23 2018-08-28 延锋彼欧汽车外饰系统有限公司 A kind of automobile active air inlet grille device
CN208085478U (en) * 2018-04-23 2018-11-13 延锋彼欧汽车外饰系统有限公司 A kind of active air-inlet grille reducing blade rotor friction
CN208085479U (en) * 2018-04-23 2018-11-13 延锋彼欧汽车外饰系统有限公司 A kind of automobile active air inlet grille device

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DE102015210874B3 (en) * 2015-06-15 2016-10-06 Volkswagen Aktiengesellschaft Mounting support for a motor vehicle and an arrangement of at least one radiator element on a mounting bracket
CN204775095U (en) * 2015-07-10 2015-11-18 梦达驰汽车系统（苏州工业园区）有限公司 Car grille installation that admits air
CN206589833U (en) * 2017-03-02 2017-10-27 广州小鹏汽车科技有限公司 It is a kind of to reduce the active air-inlet grille of windage
CN206781527U (en) * 2017-04-26 2017-12-22 常熟安通林汽车饰件有限公司 Air-inlet grille for automobile
CN108454384A (en) * 2018-04-23 2018-08-28 延锋彼欧汽车外饰系统有限公司 A kind of automobile active air inlet grille device
CN208085478U (en) * 2018-04-23 2018-11-13 延锋彼欧汽车外饰系统有限公司 A kind of active air-inlet grille reducing blade rotor friction
CN208085479U (en) * 2018-04-23 2018-11-13 延锋彼欧汽车外饰系统有限公司 A kind of automobile active air inlet grille device

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