CN203516173U - Axial fan and air conditioner - Google Patents
Axial fan and air conditioner Download PDFInfo
- Publication number
- CN203516173U CN203516173U CN201320477092.3U CN201320477092U CN203516173U CN 203516173 U CN203516173 U CN 203516173U CN 201320477092 U CN201320477092 U CN 201320477092U CN 203516173 U CN203516173 U CN 203516173U
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- Prior art keywords
- otch
- axial fan
- rotating shaft
- section
- clamping block
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- Expired - Fee Related
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- 241000883990 Flabellum Species 0.000 claims description 49
- 210000004124 hock Anatomy 0.000 claims description 19
- 238000009434 installation Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides an axial fan and an air conditioner. The axial fan comprises a fan blade and a motor, wherein the motor comprises a rotary shaft; the fan blade comprises a hub and vanes distributed around the hub; an installation hole is formed in the center of the hub; the rotary shaft comprises a limit section and a notch section located at the outer end of the limit section; the notch section is provided with a notch; a clamping-combining part is arranged in the notch. The axial fan further comprises a clamping-combining block clamped with the clamping-combining part of the notch section in a matched mode. The fan blade is sleeved with the rotary shaft of the motor through the installation hole, one side of the hub abuts against the limit section, and the clamping-combining block is clamped in the notch section and abuts against the other side of the hub of the fan blade, so that the fan blade is fixed to the rotary shaft. The axial fan and the air conditioner have the advantages of being high in consistency of the fastened parts, convenient to install, and safe and reliable in long-term usage.
Description
Technical field
The utility model relates to household appliance technical field, relates in particular to a kind of axial fan and air conditioner.
Background technique
In the prior art, the outdoor unit of air conditioner comprises the condenser for freezing, the axial fan that carries out heat exchange for accelerating condenser and surrounding atmosphere.Axial fan comprise motor and with the flabellum that the rotating shaft of motor fixes, by motor, drive flabellum to rotate.Conventionally the rotating shaft of motor is provided with screw thread, when fixing flabellum, flabellum is inserted in the rotating shaft of motor, then by the screw thread of special-purpose locking nut screw-in rotating shaft, the rotating shaft of flabellum and motor is fixed.
But such fastening means need to be according to the kind of motor, varying in size is equipped with multiple different Special locking nut, thereby causes material variety various, causes increasing mold number and expense, also can increase the more frequency of mold exchange and cause manufacturing efficiency to reduce; Use Special locking nut further to cause being equipped with multiple special tool, special tool utilization rate is low and uncommon, thereby has increased cost and reduced efficiency of assembling, also can cause the problem of inconvenient maintenance to produce in later maintenance process; Use screws the fixing plated film problem that also exists of mode, in prior art, plated film is thicker, the color of plated film is darker, corrosion resistance is better, the economic plated film of air-conditioning all adopts this thinner thickness of color zinc, because the film of flank of thread is in use easy to wearing and tearing, causes plated film to lose efficacy, the phenomenon such as further cause nut stripped thread, come off, thus unsafe problem of using produced.Therefore how economically and safely fastening flabellum and motor are problem demanding prompt solutions.
Model utility content
Main purpose of the present utility model is to provide a kind of axial fan and air conditioner, be intended to use the mode of engaging to fixedly mount flabellum and the motor of axial fan, thereby reach raising efficiency of assembling, reduce production costs, be convenient to later maintenance, and the long-time object of using safely and reliably.
The utility model provides a kind of axial fan, comprise flabellum and motor, described motor comprises rotating shaft, described flabellum comprises wheel hub and is distributed in wheel hub blade around, the center of described wheel hub is provided with mounting hole, described rotating shaft comprises spacing section and be positioned at the otch section of described spacing section of outer end, and described otch section is provided with otch and is provided with engagement portion in described otch, and described axial fan also comprises with the engagement portion of described otch section and coordinates the clamping block snapping in; Described flabellum is inserted in the rotating shaft of described motor by described mounting hole and makes a side of wheel hub against described spacing section, and described clamping block snaps in described otch section and compresses the opposite side of the wheel hub of described flabellum, and described flabellum is fixed in described rotating shaft.
Preferably, described otch is divided at least two clamping columns by described otch section, is respectively equipped with described engagement portion on the tangent plane of described each clamping column; Described clamping block comprises card article and is positioned at the fixing part of described card article end, described card article is located in described otch and is fastened with described engagement portion, described fixed position is outside described otch and be pressed on the opposite side of described wheel hub, described wheel hub is clamped between the fixing part of described clamping block and spacing section of described rotating shaft and described flabellum is fixed in described rotating shaft.
Preferably, the engagement portion on described each clamping column is along the tooth bar of the axial arranging of described rotating shaft, and the relative both sides of the card article of described clamping block are provided with the hock fastening with described two tooth bars separately.
Preferably, described tooth bar comprises a plurality of V word teeth, each V word tooth comprises near first flank of tooth of described spacing section with away from second flank of tooth of described spacing section, described first flank of tooth is perpendicular to the axis of described rotating shaft, and by the toothed crown of first flank of tooth, the direction towards the axis away from rotating shaft and spacing section tilts to extend described second flank of tooth.
Preferably, the quantity of the hock of each side of card article of described clamping block is one or two.
Preferably, described clamping block also comprises the hand push portion that is positioned at described card article end and is connected with described fixing part, and the external frame of described hand push portion is greater than the otch of described otch section.
Preferably, described hand push portion has the pushing surface perpendicular to the axis of described rotating shaft.
Preferably, the pushing surface of described hand push portion and the face being connected all or part of round and smooth excessively.
Preferably, the described clamping block part that is formed in one.
The utility model also provides a kind of air conditioner, comprises axial fan, and wherein, described axial fan adopts above-mentioned axial fan provided by the utility model.
Axial fan disclosed in the utility model and air conditioner, by otch section and spacing section are set in the rotating shaft of motor, and be provided with engagement portion in otch section, by clamping block, the otch along otch section is pressed into again, by the engagement portion in the card article on clamping block and otch section, fasten, the fixing part of clamping block is pressed on the wheel hub of flabellum tightly, and the wheel hub of flabellum is clamped between clamping block and rotating shaft spacing section, thereby reach the object of clamping flabellum and motor.In assembling work, without using special tool, clamping block can be snapped in otch manually, and clamping block only has the clamping block of destruction could dismantle flabellum after snapping in otch, can guarantee for a long time to clamp effect like this; The diameter of the rotating shaft of motor all can adopt identical clamping block clamping in the situation that difference is little, thereby has reduced die sinking quantity, and has increased pairing convenience.With respect to prior art machining screw in the rotating shaft of motor, adopt again the scheme of the fastening flabellum of Special locking nut and motor, the utility model axial fan has that fastenings conformity is high, interchangeability is strong, quick and easy for installation, long-time safe and reliable advantage.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of the utility model axial fan one preferred embodiment;
Fig. 2 is the enlarged diagram at A place in Fig. 1;
Fig. 3 is the broken section enlarged diagram of Fig. 2;
Fig. 4 is the front view of the otch section of the rotating shaft of motor in axial fan shown in Fig. 1;
Fig. 5 is the structural representation of clamping block in axial fan shown in Fig. 1;
Fig. 6 is the structural representation of another embodiment of clamping block in the utility model axial fan;
Fig. 7 is clamping block shown in Fig. 6 and the schematic diagram that engages of the otch section of the rotating shaft of motor;
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As Fig. 1 to Fig. 5, be a preferred embodiment of the utility model axial fan, this axial fan comprises flabellum 100, motor 200 and clamping block 220.Motor 200 comprises driving the rotating shaft 210 of flabellum 100 rotations.Rotating shaft 210 is cylindrical, comprises spacing section 212 and the otch section 211 that is positioned at spacing section of 212 outer ends.Flabellum 100 comprises wheel hub 110 and is distributed in wheel hub 110 blade 120 around, and wheel hub 110 center is provided with mounting hole 111, and flabellum 100 is inserted in the rotating shaft 210 of motor 200 and is made a side of wheel hub 110 against spacing section 212 by this mounting hole 111.The otch section 211 of rotating shaft 210 is provided with a kerf 2113, and otch 2113 is divided into the first clamping column 2111 and the second clamping column 2112 by otch section 211.One end near spacing section 212 on the tangent plane of the first clamping column 2111 and the second clamping column 2112 is respectively equipped with two engagement portions 2114.Clamping block 220 comprises card article 221 and is connected in two fixing parts 222 at card article 221 two ends, card article 221 is located in otch 2113 and is fastened with two engagement portions 2114, two fixing parts 222 are positioned at outside otch 2113 and are pressed on the opposite side of wheel hub 110, wheel hub 110 is clamped between the fixing part 222 of clamping block 220 and spacing section 212 of rotating shaft 210, thereby flabellum 100 is fixed in rotating shaft 210.Motor 200 drive shafts 210, and drive flabellum 100 rotations that are clamped in rotating shaft 210.
Axial fan disclosed in the utility model, by in the rotating shaft 210 at motor 200, arrange otch section 211 with spacing section 212, and in otch section 211, be provided with engagement portion 2114, by clamping block 220, the otch 2113 along otch section 211 is pressed into again, by the card article 221 on clamping block 220 and the engagement portion 2114 in otch section 211, fasten, the fixing part 222 of clamping block 220 is pressed on the wheel hub 110 of flabellum 100 tightly, and the wheel hub of flabellum 100 110 is clamped between clamping block 220 and spacing section 212 of rotating shaft 210, thereby reach the object of clamping flabellum 100 and motor 200.In assembling work, without using special tool, clamping block 220 can be snapped in otch 2113 manually, and clamping block 220 only has the clamping block 220 of destruction could dismantle flabellum 100 after snapping in otch 2113, can guarantee for a long time to clamp effect like this; The diameter of the rotating shaft 210 of motor all can adopt identical clamping block 220 clampings in the situation that difference is little, thereby has reduced die sinking quantity, and has increased pairing convenience.With respect to prior art machining screw in the rotating shaft of motor, adopt again the scheme of the fastening flabellum of Special locking nut and motor, the utility model axial fan has that fastenings conformity is high, interchangeability is strong, quick and easy for installation, long-time safe and reliable advantage.
In the present embodiment, otch 2113 is in-line, and otch section 211 is divided into the first clamping column 2111 and the second clamping column 2112.In other embodiments, otch 2113 can also be other shape, and for example otch is set to man type, and otch section is divided into three clamping columns, or otch is set to cross, and otch section is divided into four clamping columns.
In the present embodiment, spacing section 212 of rotating shaft 210 is cylindrical, and in other embodiments, spacing section 212 of rotating shaft 210 can also be set to polygonal, as long as guarantee that the size of spacing section 212 compared with axis body external diameter greatly.In addition, the axis body of rotating shaft 210 also can be set to polygonal, mounting hole 111 on the wheel hub 110 of flabellum 100 is also set to corresponding polygonal, can limitedly prevent from relatively rotating between flabellum 100 and wheel hub 110, and the reliability that further raising is fixedly connected with between the two.Can be set to cylinder that radius is larger for spacing section 212 to block the wheel hub 110 of flabellum 100, can also be to have the outstanding structure that protrusion maybe can be installed to reach the effect of blocking flabellum 100.
In order to make clamping block 220 more even with the surface of contact of flabellum 100, preferably, the face that fixing part 222 and the flabellum 100 of clamping block 220 compresses is mutually mutually adaptive.Particularly, in conjunction with Fig. 2 and Fig. 5, the surface of contact of flabellum 100 is set to plane, and corresponding, the face that fixing part 222 contacts with flabellum 100 is also plane.Certainly, the surface of contact of flabellum 100 can also be set to wave curved surface or other curved surfaces, correspondingly, fixing part 222 is set to it suitable wave curved surface or other curved surfaces, such curved surface setting can increase the frictional force between fixing part 222 and the wheel hub 110 of flabellum 100, effectively prevents from relatively rotating between flabellum 100 and fixing part 222; Be set to plane and can bring easily manufactured, more economical effect.
In the above-described embodiments, in order to make otch section 211 and the more convenient engaging of clamping block 220 of rotating shaft 210, preferably, two engagement portions 2114 on the first clamping column 2111 of otch section 211 and the second clamping column 2112 are two tooth bars along rotating shaft 210 axial arrangings, and the relative both sides of the card article 221 of clamping block 220 are provided with the hock 2210 fastening with two tooth bars separately.The above-mentioned tooth bar along axial arranging and hock 2210, can be so that hock 2210 only can be along tooth bar towards spacing section of 212 single-way movings, and more mobilely engage tightlyer, thereby can reach easy to assembly, only needing to exert pressure just can reach the effect that progressively clamps flabellum 100.In other embodiments, can also be that the engagement portion 2114 of otch section 211 is hock, the relative both sides of the card article 221 of clamping block 220 arrange tooth bar separately; The engagement portion 2114 that can also be otch section 211 is set to the draw-in groove of a depression or the fixture block of a protrusion, the relative both sides of the card article 221 of clamping block 220 arrange the draw-in groove of a depression or the fixture block of a protrusion separately, and these structure designs still can reach the effect with rotating shaft 210 clampings by flabellum 100.
Please again referring to accompanying drawing 4, particularly, tooth bar comprises a plurality of V word teeth 2217, each V word tooth 2217 comprises near first flank of tooth of spacing section 212 with away from second flank of tooth of spacing section 212, perpendicular to axis 2116, the second flank of tooth of rotating shaft 210, by the toothed crown of first flank of tooth, the direction towards the axis 2116 away from rotating shaft 210 and spacing section 212 tilts to extend first flank of tooth.First flank of tooth of this V word tooth 2217 plays clamping hock 2210, stops hock 2210 away from spacing section 212 motion, during normal use plays the effect of locking hock 2210; Second flank of tooth of this V word tooth 2217 plays guiding hock 2210 towards spacing section 212 effect snapping in.
As shown in Figure 5, preferably, the quantity of the hock 2210 of card article 221 each side of clamping block 220 is two, can strengthen like this dynamics that engages between otch section 211 and clamping block 220, makes to engage effect more stable.Certainly, as required, the quantity of the hock 2210 of card article 221 each side can also be three, four or more, or is only limited to one.
Please refer to Fig. 3 and Fig. 5, further, in order better to apply power in the process of otch 2113 that clamping block 220 is fitted into otch section 211, preferably, clamping block 220 also comprises the two hand push portions 223 that are positioned at card article 221 two ends and are connected with two fixing parts 222 respectively, and hand push portion 223 has the pushing surface perpendicular to the axis 2116 of rotating shaft 210.Particularly, please refer to Fig. 3, hand push portion 223 is connected compared with distally with leaning on flabellum 100 in fixing part 222, and the free end in hand push portion 223 has the pushing surface perpendicular to the axis 2116 of rotating shaft 210.Certainly hand push portion 223 can be to have the external frame larger compared with fixing part 222 so that the lifting surface area of pushing surface and operator's hand is larger, make stressed more even, the hand push portion 223 of pressing that operator are more comfortable; Equally, the pushing surface contacting with operator's hand can also be curved surface, such as optimizing according to ergonomics, and the curved surface of laminating staff.
Please, again referring to Fig. 5, further, in order to make operator's operational comfort and Security, preferably, the pushing surface of hand push portion 223 is all or part of round and smooth excessive with the face being connected.Particularly, pushing surface and the adjacent face away from hock 2210 that hand push portion 223 is set are round and smooth excessively, and this is in operator's operation and belongs to the most easily position of touching, therefore preferably, this is located to round and smooth processing to prevent from scratching operator's hand.Certainly, the adjacent face of pushing surface that can also opponent pushed section 223 all carries out round and smooth processing, scratches preventing to greatest extent.
Please again referring to Fig. 3 and Fig. 4, on the basis of above-described embodiment, for can be quickly and easily by the tooth bar in the hock of clamping block 220 2210 alignment cuts 2113, preferably, on the first clamping column 2111 of otch section 211 and the tangent plane of the second clamping column 2112, be respectively equipped with guide surface 2115, one end of guide surface 2115 is connected with tooth bar, and the other end is connected with the exterior edge face of otch section 211, in order to guide clamping block 220 to be slipped into engagement portion 2114.Particularly, as shown in Figure 4, it is concordant that the peak of guide surface 2115 and tooth bar keeps, and guide surface 2115 can also be higher than the peak of tooth bar or lower than the peak of tooth bar; Two guide surfaces 2115 can be two parallel planes, can also be two planes that have angle between two guide surfaces 2115, and the distance between two guide surfaces 2,115 2114 is reduced to engagement portion gradually by the exterior edge face of otch section 211.
Incorporated by reference to reference to Fig. 2 and Fig. 5, in order to make clamping block 220 more firm in the otch 2113 of otch section 211, prevent slippage, preferably, the external frame of the hand push portion 223 of clamping block 220 is greater than otch 2113.Particularly, external frame the widest position of hand push portion 223 just covers the tooth top of hock 2210.External frame the widest position of hand push portion 223 can certainly be designed to such an extent that be greater than the tooth top of hock 2210, can bring better anti-slip effect.
Preferably, clamping block 220 part that is formed in one, its material can be the one-body molded manufactures of engineering plastics, can certainly be the one-body molded manufacture of metallic material.
As shown in Figure 6 and Figure 7, be another embodiment of clamping block in the utility model axial fan.The relative both sides of the card article 321 of clamping block 320 only arrange a hock 3210 separately, remaining part all identical with the clamping block 220 of above-described embodiment.Arrange like this and compare clamping block 220 and more easily assemble.
In addition, the utility model also provides a kind of air conditioner, comprises axial fan, wherein, the axial fan that this axial fan adopts as above-mentioned the utility model provides, its concrete structure can illustrate with reference to above-mentioned the utility model embodiment, then this repeats no more.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an axial fan, comprise flabellum and motor, described motor comprises rotating shaft, described flabellum comprises wheel hub and is distributed in wheel hub blade around, the center of described wheel hub is provided with mounting hole, it is characterized in that, described rotating shaft comprises spacing section and be positioned at the otch section of described spacing section of outer end, described otch section is provided with otch and is provided with engagement portion in described otch, and described axial fan also comprises with the engagement portion of described otch section and coordinates the clamping block snapping in; Described flabellum is inserted in the rotating shaft of described motor by described mounting hole and makes a side of wheel hub against described spacing section, and described clamping block snaps in described otch section and compresses the opposite side of the wheel hub of described flabellum, and described flabellum is fixed in described rotating shaft.
2. axial fan according to claim 1, is characterized in that, described otch is divided at least two clamping columns by described otch section, is respectively equipped with described engagement portion on the tangent plane of described each clamping column; Described clamping block comprises card article and is positioned at the fixing part of described card article end, described card article is located in described otch and is fastened with described engagement portion, described fixed position is outside described otch and be pressed on the opposite side of described wheel hub, described wheel hub is clamped between the fixing part of described clamping block and spacing section of described rotating shaft and described flabellum is fixed in described rotating shaft.
3. axial fan according to claim 2, is characterized in that, the engagement portion on described each clamping column is along the tooth bar of the axial arranging of described rotating shaft, and the relative both sides of the card article of described clamping block are provided with the hock fastening with described two tooth bars separately.
4. axial fan according to claim 3, it is characterized in that, described tooth bar comprises a plurality of V word teeth, each V word tooth comprises near first flank of tooth of described spacing section with away from second flank of tooth of described spacing section, described first flank of tooth is perpendicular to the axis of described rotating shaft, and by the toothed crown of first flank of tooth, the direction towards the axis away from rotating shaft and spacing section tilts to extend described second flank of tooth.
5. axial fan according to claim 3, is characterized in that, the quantity of the hock of each side of card article of described clamping block is one or two.
6. according to the axial fan described in claim 2 to 5 any one, it is characterized in that, described clamping block also comprises the hand push portion that is positioned at described card article end and is connected with described fixing part, and the external frame of described hand push portion is greater than the otch of described otch section.
7. axial fan according to claim 6, is characterized in that, described hand push portion has the pushing surface perpendicular to the axis of described rotating shaft.
8. axial fan according to claim 7, is characterized in that, the pushing surface of described hand push portion and the face being connected all or part of round and smooth excessively.
9. axial fan according to claim 6, is characterized in that, the described clamping block part that is formed in one.
10. an air conditioner, is characterized in that, described air conditioner comprises the axial fan described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320477092.3U CN203516173U (en) | 2013-08-06 | 2013-08-06 | Axial fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320477092.3U CN203516173U (en) | 2013-08-06 | 2013-08-06 | Axial fan and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516173U true CN203516173U (en) | 2014-04-02 |
Family
ID=50375109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320477092.3U Expired - Fee Related CN203516173U (en) | 2013-08-06 | 2013-08-06 | Axial fan and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516173U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509186A (en) * | 2015-12-24 | 2016-04-20 | Tcl空调器(中山)有限公司 | Outdoor unit of air-conditioner |
| WO2018137378A1 (en) * | 2017-01-25 | 2018-08-02 | 珠海格力电器股份有限公司 | Air conditioner |
| CN117128186A (en) * | 2023-08-09 | 2023-11-28 | 滁州市盛华机电制造有限公司 | Central air conditioner transmission connecting shaft and processing method |
-
2013
- 2013-08-06 CN CN201320477092.3U patent/CN203516173U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509186A (en) * | 2015-12-24 | 2016-04-20 | Tcl空调器(中山)有限公司 | Outdoor unit of air-conditioner |
| CN105509186B (en) * | 2015-12-24 | 2018-08-14 | Tcl空调器(中山)有限公司 | A kind of air-conditioner outdoor unit |
| WO2018137378A1 (en) * | 2017-01-25 | 2018-08-02 | 珠海格力电器股份有限公司 | Air conditioner |
| CN117128186A (en) * | 2023-08-09 | 2023-11-28 | 滁州市盛华机电制造有限公司 | Central air conditioner transmission connecting shaft and processing method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140806 |
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| EXPY | Termination of patent right or utility model |