US20090137200A1 - Supporting structure for adjustable air guide vanes - Google Patents

Supporting structure for adjustable air guide vanes Download PDF

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Publication number
US20090137200A1
US20090137200A1 US12/251,522 US25152208A US2009137200A1 US 20090137200 A1 US20090137200 A1 US 20090137200A1 US 25152208 A US25152208 A US 25152208A US 2009137200 A1 US2009137200 A1 US 2009137200A1
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United States
Prior art keywords
air guide
guide vane
guide vanes
vanes
supporting member
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US12/251,522
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English (en)
Inventor
Yuji Fujiwara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moriroku Technology Co Ltd
Original Assignee
Moriroku Technology Co Ltd
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 Moriroku Technology Co Ltd filed Critical Moriroku Technology Co Ltd
Assigned to MORIROKU TECHNOLOGY COMPANY, LTD. reassignment MORIROKU TECHNOLOGY COMPANY, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJIWARA, YUJI
Publication of US20090137200A1 publication Critical patent/US20090137200A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B60H1/3414—Nozzles; Air-diffusers with means for adjusting the air stream direction
    • B60H1/3421—Nozzles; Air-diffusers with means for adjusting the air stream direction using only pivoting shutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B60H2001/3464—Details of hinges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B60H2001/3471—Details of actuators

Definitions

  • the present invention relates to a structure for supporting an air guide vane in a supply opening for air conditioning in vehicles, especially relates to a structure for supporting an adjustable air guide vane.
  • An apparatus for changing the direction of airflow from a supply opening for air conditioning which comprises a plurality of vanes for changing the direction of airflow from an air-conditioning duct and a manual operation knob handled by a vehicle driver to change the direction of the vanes, has been suggested in the past.
  • Japanese Patent Public Disclosure No. H10-250357 discloses a wind direction adjusting device that is designed to prevent deterioration of an outside appearance due to use of an operation knob, and to make it possible to reduce the control force for sliding the operation knob, and the rest.
  • the air blowing-out port device for vehicle which is disclosed in Japanese Patent Public Disclosure No. H08-145455, comprises a generally square-shaped shim of elastic materials such as rubber and elastomer that support a lower shaft part of a central vertical blade.
  • a blade connecting member made of elastomer can be substituted for the shim in the air blowing-out port device for vehicle.
  • a machine part is molded by injecting polyester-based thermoplastic elastomer into ordinary molding dies, irregular concavities and convexities of the die surfaces are transferred to the surfaces of the molded part, and extremely irregular concavities and convexities of relatively large size are formed on the surfaces of the molded part as shown in FIG. 7 in the drawings.
  • an abrupt load change is caused at peaks P 1 and P 2 of a load curve R 1 in FIG. 9 in the drawings. Consequently, if the rotation shaft of a vane is borne by the molded part having the aforementioned rough surface, the operational feeling of the vane becomes worse and the rotational movement of the vane becomes unstable.
  • the molded part for supporting the vane tends to suffer wear or uneven abrasion due to repeated rotation of the vane. Since a required torque to rotate the vane varies as the molded part is worn away, it becomes more difficult to retain the predetermined operational feeling of the vane for a long period of time. Furthermore, in order to eliminate the irregular concavities and convexities on a working surface of a molding die and produce a flat and smooth working surface that does not impair the function of a molded part, the working surface of a molding die should be processed by an expensive treatment as a general rule.
  • the objective of the present invention is to provide a structure for supporting air guide vanes in a supply opening for air conditioning, which can produce a stable load resistance to rotation of the air guide vane when rotating the air guide vane, so that a good operational feeling of rotation of the air guide vane can be obtained.
  • Another objective of the present invention is to provide a structure for supporting an air guide vane in a supply opening for air conditioning, which can prevent causing abrupt changes in the load resistance to rotation of the air guide vane, so that a good operational feeling of rotation of the air guide vane can be obtained.
  • Further objective of the present invention is to provide a structure for supporting an air guide vane in a supply opening for air conditioning, which can maintain a virtually constant operational feeling of rotation of the air guide vane even if the rotation of the air guide vane is repeated.
  • Further objective of the present invention is to provide a structure for supporting an air guide vane in a supply opening for air conditioning, which can bring the rotation of the air guide vanes to a halt at a desired angle and hold the air guide vane at the angular position.
  • Further objective of the present invention is to provide a structure for supporting an air guide vane in a supply opening of air conditioning, which can obviate the needs for processing an expensive treatment to the working surface of a molding die and reduce the costs of manufacturing the supporting structure.
  • the structure for supporting air guide vanes in a supply opening for air conditioning comprises: air guide vanes disposed in a supply opening for air conditioning and adapted to change the direction of airflow by manual rotation of the air guide vanes, and a supporting member comprising bearing surfaces for supporting the air guide vanes rotatably and a lot of microscopic concavities and convexities formed on the bearing surfaces in order to control the load resistance to rotation of the air guide vanes.
  • a lot of microscopic concavities and convexities are formed in order that the peak value of the load resistance to rotation of the air guide vanes is maintained at a virtually constant value.
  • a lot of microscopic concavities and convexities are formed in order that the load resistance to rotation of the air guide vanes does not represent drastic load changes at the time of the peak values thereof.
  • Another aspect of the structure for supporting air guide vanes in a supply opening for air conditioning comprises: a rotation shaft formed on the end faces of the air guide vanes; a hole or bore formed in the supporting member to receive the rotation shaft; and a lot of microscopic concavities and convexities formed on the inner surface of the hole or bore; wherein the rotation shaft is supported by multiple point contacts with the inner surface of the respective hole or bore.
  • the structure for supporting air guide vanes in a supply opening for air conditioning is also characterized in that the rotation shafts of the air guide vanes each are formed by a circular column-shaped boss; and the supporting member is provided with the holes or bores into which the circular column-shaped boss is rotatably inserted; and the bearing surface for supporting the circular column-shaped boss is formed by the inner surface of each of the holes or bores.
  • the structure for supporting air guide vanes preferably comprises: the supporting member that is manufactured by molding olefin-based thermoplastic elastomer molded in a molding die; and a lot of microscopic concavities and convexities formed at least on the bearing surface that supports the air guide vanes rotatably.
  • the olefin-based thermoplastic elastomer preferably has a hardness of between Shore A80 and Shore D60.
  • a circular column-shaped boss is formed in the outer and inner end faces of the air guide vanes, respectively, to form the rotation shafts of the air guide vanes.
  • a supporting member is provided with holes or bores into which the circular column-shaped bosses are rotatably inserted.
  • a bearing surface for supporting the circular column-shaped boss is defined by the inner surface of the hole or bore.
  • One of the circular column-shaped bosses of each of the air guide vanes is rotatably inserted into the hole or bore of the supporting member. Simultaneously, the other of the circular column-shaped bosses of the air guide vane can be supported to turn freely in order to avoid varying the torque to rotate said air guide vane when rotating the air guide vanes.
  • an air guide vane consists of a plurality of air guide vanes that are arranged to leave a predetermined space between adjacent air guide vanes and to extend in parallel with one another.
  • a plurality of holes or bores are formed at predetermined intervals in the supporting member.
  • One of the circular column-shaped bosses of each of the air guide vanes is inserted into the respective holes or bores.
  • the air guide vanes are connected by a link member to rotate in conjunction with one another. And an operation knob is attached to one of the air guide vanes.
  • the structure for supporting air guide vanes may comprise: a plurality of air guide vanes arranged on the both sides of the supporting member; a plurality of through-holes or through-bores formed at predetermined intervals in the supporting member; and circular column-shaped bosses formed on the inner end faces of the air guide vanes, wherein the circular column-shaped bosses are rotatably inserted into the respective through-holes or through-bores from the both sides of the supporting member.
  • the supporting member of the air guide vanes according to the present invention preferably consists of olefin-based thermoplastic elastomer having a hardness of between Shore A80 and Shore D60.
  • the hardness of the bearing surface of the supporting member can be set to an appropriate degree of hardness. Consequently, it becomes possible to provide a stable load resistance to rotation of air guide vanes and obtain a good operational feeling of rotation of the air guide vane. Since the degree of mold transferability of olefin-based thermoplastic elastomer is characteristically lower than that of other thermoplastic elastomer, a lot of microscopic concavities and convexities can be formed on the bearing surface regardless of how the working surface of the mold is processed.
  • the bearing surface on which a lot of microscopic concavities and convexities are virtually uniformly formed according to the present invention is hardly affected by a fine abrasion powder. Therefore, the amount of torque required to rotate air guide vanes hardly varies even if the air guide vanes are turned repeatedly. Consequently, the virtually constant operational feeling in rotating the air guide vanes can be maintained during long-term use.
  • the structure for supporting air guide vanes comprises a supporting member made of olefin-based thermoplastic elastomer having a hardness of between Shore A80 and Shore D60, and a bearing surface formed on the supporting member to bear the rotation shafts of the air guide vanes, the hardness of the bearing surface can be set appropriately. Since a lot of microscopic concavities and convexities are formed on the bearing surface virtually uniformly, a substantially constant load resistance to rotation can be applied to the air guide vanes. Consequently, it is possible to bring the rotation of the air guide vanes to a halt at a desired angle and hold the air guide vane at the angular position.
  • the structure for supporting air guide vanes in a supply opening for air conditioning according to the present invention can be manufactured inexpensively because it is not necessary to process an expensive treatment to the working surfaces of molding dies.
  • FIG. 1 shows a perspective view of supply openings for air conditioning in a vehicle, which comprises an apparatus for changing the direction of airflow in which a structure for supporting air guide vanes in a supply opening according to the present invention is installed;
  • FIG. 2 shows a vertical cross-sectional view taken along a line II-II in FIG. 1 ;
  • FIG. 3 shows a perspective view of the structure for supporting air guide vanes according to the present invention
  • FIG. 4 shows a transverse cross-sectional view taken along a line IV-IV in FIG. 1 ;
  • FIG. 5 shows an enlarged section in the vicinity of a supporting member in FIG. 4 ;
  • FIG. 6 shows an exploded perspective view of an operation knob, an elastic member and an air guide vane
  • FIG. 7 is a micrograph showing a 500 times magnification of the surface of the part that is formed by injecting a conventional polyester-based thermoplastic elastomer into a conventional molds;
  • FIG. 8 is a micrograph showing a 500 times magnification of the surface of the supporting member that is molded by injecting olefin-based thermoplastic elastomer according to the present invention
  • FIG. 9 is a diagram showing a load resistance to rotation of an air guide vane that is borne by the conventional supporting member having the surface of FIG. 7 ;
  • FIG. 10 is a diagram showing a load resistance to rotation of an air guide vane that is borne by the supporting member having the surface of FIG. 8 according to the present invention.
  • FIGS. 1-6 illustrate an embodiment of the present invention wherein the supporting structure for adjustable air guide vanes according to the present invention is embodied in an apparatus for changing the direction of airflow, which is disposed in a supply opening for air conditioning, and the supply opening opens into a vehicle interior.
  • An opening 3 is formed in a panel portion 2 defined at the end of an air-conditioning duct 1 and a supporting member 4 is attached to the central portion of the opening 3 .
  • a cover member 4 a is fitted on the front surface of the supporting member 4 and by the supporting member 4 and the cover member 4 a, the opening 3 is divided into two supply openings 3 a, 3 b for air conditioning. As illustrated in FIGS.
  • the supporting member 4 is connected to a partition wall 5 by which two passages 1 a, 1 b are defined in the air-conditioning duct 1 .
  • the supply opening 3 a is communicated with the passage 1 a, while the supply opening 3 b is communicated with the passage 1 b.
  • Air guide vanes 7 a, 7 b, 7 c, 7 d of each of the airflow-direction changing apparatus 6 extend horizontally, while rotational vanes 8 a, 8 b, 8 c, 8 d, 8 e that are disposed on the upstream side of the air guide vanes 7 a, 7 b, 7 c, 7 d extend vertically.
  • the air guide vanes 7 a - 7 d of each of the airflow-direction changing apparatus 6 are aligned to leave a regular space between adjacent vanes and arranged in parallel to one another.
  • a rotation shaft 9 a is formed on the outside end faces of the air guide vanes 7 a - 7 d extending in the wingspan direction B-B and a rotation shaft 9 b is formed on the inside end faces of the air guide vanes 7 a - 7 d extending in the wingspan direction B-B.
  • the rotation shafts 9 a, 9 b are formed in a circular column-like shape and horizontally project from the outside and inside end faces of the air guide vanes 7 a - 7 d in the wingspan direction B-B.
  • the rotation shafts 9 a of the air guide vanes 7 a - 7 d are inserted into the respective four holes 2 a in the panel portion 2 and supported to revolve freely.
  • the holes 2 a are formed in the panel portion 2 to align in the vertical direction and leave space between adjacent holes, so as to receive the respective rotation shafts 9 a of the air guide vanes 7 a - 7 d.
  • the rotation shafts 9 b of the air guide vanes 7 a - 7 d are inserted into the respective four through-holes 4 b in the supporting member 4 and supported to be rotatable.
  • the through-holes 9 b are formed in the supporting member 4 to align in the vertical direction and leave space between adjacent through-holes, so as to receive the rotation shafts 9 b of the air guide vanes 7 a - 7 d.
  • the through-holes 9 b each run through the supporting member 4 and open in the both sides of the supporting member 4 .
  • the through-holes 4 b are formed on the sides of the supporting member 4 to align in the vertical direction and leave space between adjacent through-holes, so that the through-holes 4 b are opposed to the corresponding holes 2 a, respectively. As illustrated in FIG.
  • the rotation shafts 9 b of the air guide vanes 7 a - 7 d disposed in the supply openings 3 a and 3 b are inserted into the four through-holes 4 b from the respective sides of the supporting member 4 .
  • the inner surfaces of the through-holes 4 b serve as a bearing surface for rotatably supporting the rotation shafts 9 b of the air guide vanes 7 a - 7 d.
  • the through-holes 4 b of the supporting member 4 are used in supporting the rotation shafts 9 b, however, a through-hole is not necessarily required to receive the rotation shafts 9 b of the air guide vanes 7 a - 7 d.
  • a hole or bore that can support the rotation shafts 9 b of the air guide vanes 7 a - 7 d rotatably would be sufficient to receive the rotation shafts 9 b, regardless of the shape of a hole or bore.
  • the rotation shafts 9 b of the air guide vanes 7 a - 7 d are a column-shaped boss that projects from the inner end faces of the air guide vanes 7 a - 7 d, and which are inserted into the through-holes 4 b of the supporting member 4 .
  • the air guide vanes 7 a - 7 d are connected by a link member 10 to rotate in conjunction with one another.
  • the rotational vanes 8 a, 8 b, 8 c, 8 d, 8 e each have a rotation shaft 11 that extends in the vertical direction.
  • the rotational vanes 8 a - 8 e are disposed in the passages 1 a, 1 b of the air-conditioning duct 1 , wherein the rotational vanes 8 a - 8 e are placed at regular intervals and parallel to one another, and the rotational vanes 8 a - 8 e are supported by the respective rotation shafts 11 to rotate in the horizontal direction C-C in FIG. 4 .
  • the rotation shafts 11 of the rotational vanes 8 a - 8 e extend in parallel with the plane where the rotation shafts 9 a, 9 b of the air guide vanes 7 a - 7 d are included and extend at an angle of 90 degrees with the rotation shafts 9 a, 9 b of the air guide vanes 7 a - 7 d.
  • the rotational vanes 8 a - 8 e are connected by a link member 12 to rotate in conjunction with one another.
  • the rotational vane 8 c is provided with an opening 13 and a link member 14 as illustrated in FIG. 2 .
  • the link member 14 is adjacent to the opening 13 .
  • an elastic member 15 is secured to the second air guide vane 7 b from the top in each airflow-direction changing apparatus 6 .
  • the elastic member 15 is filled in a projection 17 formed in the central region of the downstream edge 16 of the air guide vanes 7 b.
  • the projection 17 extends from the downstream edge 16 of the air guide vane 17 b horizontally, so that the elastic member 15 fitted in the projection 17 extends from the downstream edge 16 of the air guide vane 17 b horizontally.
  • the elastic member 15 may be made of rubber-based elastic materials such as silicone rubber.
  • An operation knob 18 is attached to the air guide vanes 7 b. As illustrated in FIGS. 2 , 4 and 6 , a recess 18 a for receiving an air guide vane is formed in the operation knob 18 .
  • the air guide vane 7 b is inserted into the recess 18 a from the side of the downstream edge 16 of the air guide vane 7 b and thereby, a part of one surface of a wing profile of the air guide vane 7 b, a part of the other surface of the wing profile, a part of the downstream edge 16 of the air guide vane 7 b, and the elastic member 15 are disposed in the recess 18 a.
  • the operation knob 18 is fitted with a supporting rib 19 , which sticks out in the recess 18 a and extends to the elastic member 15 so that the supporting rib 19 abuts on the elastic member 15 slidably.
  • the operation knob 18 is also provided with a guide protrusion 18 b projecting into the recess 18 a, and the guide protrusion 18 b slidably engages with a groove 20 formed on the underside of the air guide vane 7 b.
  • the groove 20 extends in the direction of reciprocation of the operation knob 18 .
  • the operation knob 18 is provided with a pair of claw portions 18 c, so that the claw portions 18 c slidably engage with the upstream edge 21 of the air guide vane 7 b.
  • the operation knob 18 is fitted on the air guide vane 7 b by means of the supporting knob 19 abutting on the elastic member 15 , the guide protrusion 18 b slidably engaging with the groove 20 of the air guide vane 7 b, and the pair of claw portions 18 c slidably engaging with the upstream edge 21 of the air guide vane 7 b and thereby, the operation knob 18 may slide in the wingspan direction B-B of the air guide vane 7 b.
  • the operation knob 18 is provided with a pair of projection levers 18 d between which the link member 14 is pinched slidably and rotatably (refer to FIGS. 2 and 4 ).
  • the supporting member 4 is manufactured into a desired size and shape by a process of molding olefin-based thermoplastic elastomer having a hardness of between Shore A80 and Shore D60 in a molding die.
  • the degree of mold transferability of olefin-based thermoplastic elastomer is characteristically lower than that of other thermoplastic elastomer.
  • the structure for supporting air guide vanes according to the present invention is characterized in that the rotation shaft 9 b formed on the inner end face of the air guide vane 7 b is rotatably borne by the supporting member 4 or the bearing surfaces on which such a lot of microscopic concavities and convexities are formed.
  • the rotation shaft 9 a formed on the outside end face of the air guide vane 7 b is inserted into the hole 2 a of the panel member 2 and retained rotatably, wherein the rotation shaft 9 a is not borne by the supporting member 4 made of the aforementioned olefin-based thermoplastic elastomer, in this embodiment.
  • the microscopic concavities and convexities of the supporting member 4 is not formed on the rotation shaft bearing surface of the hole 2 a of the panel member 2 .
  • a lot of microscopic concavities and convexities are formed not only on the rotation shaft bearing surface of the through-hole 4 b of the supporting member 4 but also on the rotation shaft bearing surface of the hole 2 a of the panel member 2 , in order to produce a certain amount of load resistance to rotation not only between the rotation shaft 9 b and the through-hole 4 b but also between the rotation shaft 9 a and the hole 2 b, when the air guide vane 7 b is rotated.
  • FIG. 7 is a micrograph showing the surface of a molded article produced by the process of injecting a conventional polyester-based thermoplastic elastomer into a conventional mold die.
  • FIG. 8 is a micrograph showing the surface of the supporting member 4 produced by the process of molding olefin-based thermoplastic elastomer according to the present invention. Comparing the micrograph of FIG. 7 with the micrograph of FIG. 8 , it is found that a relatively large and extremely irregularly-dispersed concavities and convexities are formed on the surface of the molded article in FIG.
  • the load curve R 2 that indicates a change of load resistance to rotation of the air guide vanes 7 a - 7 d with respect to a change of rotation angle of the air guide vanes 7 a - 7 d does not represent a drastic change of load resistance at peaks P 3 and P 4 .
  • the function of the above-mentioned apparatus 6 for changing the direction of airflow is briefly described as follows.
  • the controlled-air that flows down in the direction of A in FIG. 2 passes through the rotational vanes 8 a - 8 e and the air guide vanes 7 a - 7 d, then runs out of two supply openings 3 a, 3 b.
  • the operation knob 18 is turned upwardly or downwardly, the air guide vanes 7 a - 7 d are turned upwardly or downwardly and retained at a desired angle.
  • the lever member 18 d of the operation knob 18 turns the link member 14 of the rotating vane 8 c, so that the rotational vanes 8 a - 8 d are rotated horizontally and retained at a desired angle. Consequently, the direction of airflow flowing out of two supply openings 3 a, 3 b can be changed at any angle, separately.
  • the structure for supporting air guide vanes according to the present invention is applied to a supply opening for air conditioning that opens to a vehicle inside, however, the structure can be also applied to a supply opening of household or professional-use air blowers without substantial modification.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning For Vehicles (AREA)
US12/251,522 2007-10-16 2008-10-15 Supporting structure for adjustable air guide vanes Abandoned US20090137200A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-269526 2007-10-16
JP2007269526A JP2009097787A (ja) 2007-10-16 2007-10-16 空調用吹出口のフィン支持構造

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US20090137200A1 true US20090137200A1 (en) 2009-05-28

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US12/251,522 Abandoned US20090137200A1 (en) 2007-10-16 2008-10-15 Supporting structure for adjustable air guide vanes

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JP (1) JP2009097787A (ja)

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EP2439090A1 (de) * 2010-10-07 2012-04-11 TRW Automotive Electronics & Components GmbH Bedienelement für einen Luftausströmer
CN102953131A (zh) * 2011-08-20 2013-03-06 苏州敏喆机械有限公司 一种大位距侧吹风装置
DE102013107095A1 (de) 2012-07-27 2014-01-30 Dr. Schneider Kunststoffwerke Gmbh Beschichtete Lamelle
US20160200177A1 (en) * 2015-01-13 2016-07-14 Howa Plastics Co., Ltd. Operation knob for register
EP3047988A3 (de) * 2015-01-21 2016-11-02 TRW Automotive Electronics & Components GmbH Bremsbaugruppe und reibbelag für eine bremsbaugruppe
FR3073456A1 (fr) * 2017-11-15 2019-05-17 Faurecia Interieur Industrie Dispositif de commande comprenant un element de commande mobile en rotation et bloque en translation.
US20220081119A1 (en) * 2018-12-21 2022-03-17 Mhi Rj Aviation Ulc Air deflector and system including the air deflector

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CN104515283B (zh) * 2013-09-30 2018-01-02 珠海格力电器股份有限公司 一种空调器及其导风板卡扣装置

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