WO2020042440A1 - 风叶轴及其与风叶的装配结构和轴套 - Google Patents

风叶轴及其与风叶的装配结构和轴套 Download PDF

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Publication number
WO2020042440A1
WO2020042440A1 PCT/CN2018/121135 CN2018121135W WO2020042440A1 WO 2020042440 A1 WO2020042440 A1 WO 2020042440A1 CN 2018121135 W CN2018121135 W CN 2018121135W WO 2020042440 A1 WO2020042440 A1 WO 2020042440A1
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WIPO (PCT)
Prior art keywords
blade
shaft
hole
diameter
blade shaft
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PCT/CN2018/121135
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English (en)
French (fr)
Inventor
王孝忱
闫鲁华
柳洲
梁浩
陈宇强
Original Assignee
珠海格力电器股份有限公司
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Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Priority to JP2020569162A priority Critical patent/JP7069357B2/ja
Publication of WO2020042440A1 publication Critical patent/WO2020042440A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts

Definitions

  • the invention relates to the technical field of fan equipment, in particular to a blade shaft, an assembly structure and a sleeve of the blade.
  • one of the objectives of the present invention is to provide a blade shaft and its assembly structure and sleeve with the blade.
  • the blade shaft By constructing the blade shaft as a stepped shaft, the local interference of the sleeve and the blade blade ends is achieved. The cooperation replaces the original overall cooperation, and solves the problem of eccentric assembly of the fan shaft hole.
  • the present invention adopts the following technical solutions:
  • An air blade shaft is used for cooperating with an air blade.
  • the air blade shaft includes a driving end and a free end.
  • the driving end is connected with a driving device for driving the air blade shaft to rotate.
  • a portion where the blade shaft and the blade are mated includes a first mating portion near the driving end and a second mating portion near the free end, and the first mating portion The diameter of is larger than the diameter of the second fitting portion.
  • a first limiting structure is provided on a side of the first mating portion remote from the free end, for limiting an axial position of the wind blade toward the driving device; and / or,
  • a connecting portion is provided at the free end for connecting with a mating structure, and the mating structure is used to limit an axial position of the wind blade toward the free end.
  • the wind blade shaft includes a shaft body
  • the first limiting structure includes a radial protrusion structure provided on the shaft body;
  • connection portion includes a threaded structure provided on the shaft body.
  • a shaft step portion is provided between the first and second fitting portions, a large diameter side of the shaft step portion includes the first matching portion, and a small diameter side of the shaft step portion includes the In the second fitting portion, a chamfered structure is formed on the shaft step portion.
  • a diameter of the connecting portion is smaller than a diameter of the second fitting portion, and an annular groove is provided between the connecting portion and the second fitting portion.
  • the blade shaft is a motor shaft.
  • the wind blade includes a shaft sleeve, the wind blade shaft is inserted into an inner hole of the shaft sleeve, and the inner hole includes a first fit with the first hole
  • the first hole portion that is matched with the second hole portion and the second hole portion that is matched with the second matching portion have a diameter larger than that of the second hole portion.
  • an interference fit is formed between the first fitting portion and the first hole portion, and / or an interference fit is formed between the second fitting portion and the second hole portion.
  • the cooperation between the blade shaft and the shaft sleeve is configured such that at least a part of the cooperation between the first matching portion and the second matching portion is a clearance fit in the axial direction of the blade shaft.
  • a diameter of an inner hole between the first hole portion and the second hole portion is the same as a diameter of the first hole portion, and a wind blade between the first fitting portion and the second fitting portion
  • the shaft diameter is the same as the diameter of the second fitting portion.
  • a hole step portion is provided between the first hole portion and the second hole portion, and a chamfered structure is formed on the hole step portion.
  • the wind blade includes a wind blade body, a wind blade hole is provided at a radial center position of the wind blade body, and the shaft sleeve is bonded in the wind blade hole.
  • the present invention provides the following technical solutions:
  • the bushing includes an inner hole, the inner hole includes a first hole portion and a second hole portion, and the diameter of the first hole portion is larger than that The diameter of the second hole portion is described.
  • the diameter of the inner hole between the first hole portion and the second hole portion is the same as the diameter of the first hole portion, and a hole step is provided between the first hole portion and the second hole portion.
  • a chamfered structure is formed on the hole step.
  • the wind blade shaft provided by the present invention, and its assembly structure and shaft sleeve with the wind blade.
  • the wind blade shaft By constructing the wind blade shaft as a stepped shaft, a partial interference fit between the shaft sleeve and the ends of the wind blade shaft can be realized, instead of the original overall fit. It solves the problem of eccentric assembly of the fan shaft hole and assembly, which can effectively avoid the problem of head jitter caused by the improper assembly of the blades and the increase of the coaxiality between the shaft sleeve and the blade shaft.
  • the fitting part is an interference fit at both ends and a clearance fit in the middle, which makes it more convenient for the user to disassemble the wind blade. In the process of injection molding of the sleeve, the sleeve is easier to process, which improves production efficiency and saves costs.
  • FIG. 1 is a schematic structural diagram of a blade shaft provided by the present invention
  • FIG. 2 shows an exploded schematic view of an assembly structure of a blade shaft and a blade provided by the present invention
  • FIG. 3 shows an assembly schematic diagram of an assembly structure of a blade shaft and a blade provided by the present invention
  • FIG. 4 shows a partially enlarged view of an assembly structure of a blade shaft and a blade provided by the present invention
  • FIG. 5 is a cross-sectional view of a shaft sleeve provided by the present invention.
  • Wind blade shaft 11. First mating portion; 12. Second mating portion; 13. Shaft body; 14. First limiting structure; 15. Radial convex structure; 16. Connecting portion; 17. Shaft step 18; annular groove; 2, driving device; 3, wind blade knob; 4, wind blade; 41, wind blade body; 411, wind blade hole; 42, shaft sleeve; 421, inner hole; 4211, first Hole portion; 4212, second hole portion; 422, hole step portion; 5, gasket.
  • the present application provides a blade shaft 1, such as a blade shaft on a fan.
  • the blade shaft 1 includes a driving end connected to a driving device 2 for driving the blade shaft 1 to rotate and a free end remote from the driving device 2.
  • the blade 4 It is arranged between the driving end and the free end, so that the wind blade shaft 1 can drive the wind blade 4 to rotate, and a part of the wind blade shaft 1 and the wind blade 4 includes a portion near the driving end.
  • the first mating portion 11 and the second mating portion 12 near the free end have a diameter larger than that of the second mating portion 12.
  • the two ends of the fan blade shaft 1 and the fan blade sleeve can be a partial interference fit, and the middle can be a clearance fit, which can effectively solve the problem of eccentricity of the fan shaft hole fitting assembly. .
  • the blade shaft 1 includes a shaft body 13, and a first limiting structure 14 is provided on a side of the first mating portion 11 away from the free end, and the first limiting structure 14 includes a
  • the radial protruding structure 15 on the shaft body 13 may be, for example, a circlip spring for limiting the axial position of the wind blade 4 toward the driving device 2, and / or a connection is provided at the free end.
  • the connecting portion 16 includes a threaded structure provided on the shaft body 13 for connecting with a mating structure.
  • the mating structure is a fan blade knob 3, and the blade knob 3 is connected with The threaded structure rotates to fasten and cooperate to limit the axial position of the wind blade 4 toward the free end.
  • a shaft step portion 17 is provided between the first fitting portion 11 and the second fitting portion 12, and a large diameter side of the shaft step portion 17 includes the first fitting portion 11, and the shaft step portion 17
  • the small-diameter side includes the second fitting portion 12, and a chamfered structure is formed on the shaft step portion 17.
  • the chamfered structure makes it difficult for a user to get stuck when installing the wind blade 4, and can make the installation process easier.
  • a diameter of the connecting portion 16 is smaller than a diameter of the second mating portion 12.
  • An annular groove 18 is provided between the connecting portion 16 and the second mating portion 12. The annular groove 18 is used for The transition between the second mating portion 12 and the connecting portion 16 is more convenient for processing and improves production efficiency.
  • the fan blade shaft 1 is a motor shaft
  • the driving device 2 for driving the fan blade shaft 1 to rotate is a motor.
  • the present application also provides an assembly structure of the blade shaft 1 and the blade 4.
  • the blade 4 includes a blade body 41 and a shaft sleeve 42.
  • a radial blade hole 411 is provided at a radial center position, and the shaft sleeve 42 is bonded to the blade hole 411.
  • the shaft sleeve 42 includes an inner hole 421, and the blade shaft 1 is inserted into the shaft sleeve 42.
  • the inner hole 421, so that the fan blade shaft 1 can drive the fan blade 4 to rotate, the inner hole 421 includes a first hole portion 4211 that cooperates with the first mating portion 11 and a second fit
  • the second hole portion 4212 is matched with the portion 12.
  • the diameter of the first hole portion 4211 is larger than the diameter of the second hole portion 4212.
  • the first fitting portion 11 and the first hole portion 4211 are in an interference fit
  • / or the second fitting portion 12 and the second hole portion 4212 are in an interference fit. Due to the interference fit at both ends, the assembly gap is kept small and the eccentricity of the shaft hole is reduced, which reduces the unbalanced mass, thereby effectively reducing the amplitude of the vibration of the wind blade 4 and reducing the jitter.
  • the cooperation between the blade shaft 1 and the shaft sleeve 42 is configured such that at least a part of the cooperation between the first and second mating portions 11 and 12 in the axial direction of the blade shaft 1 is a gap.
  • Cooperate The setting of the clearance fit makes it easier for the user in the entire disassembly and assembly process, and in the injection molding process, the shaft sleeve 42 is easier to process, which improves production efficiency and saves costs.
  • the diameter of the inner hole 421 between the first hole portion 4211 and the second hole portion 4212 is the same as the diameter of the first hole portion 4211, and the first fitting portion 11 and the second fitting portion
  • the diameter of the blade shaft 1 between 12 is the same as the diameter of the second fitting portion 12, so that the diameter of the blade shaft 1 between the first fitting portion 11 and the second fitting portion 12 is smaller than the first hole portion
  • the diameter of the inner hole 421 between 4211 and the second hole portion 4212 is such that the fit between the first fitting portion 11 and the second fitting portion 12 is a clearance fit.
  • a hole step portion 422 is provided between the first hole portion 4211 and the second hole portion 4212, and a chamfered structure is formed on the hole step portion 422.
  • the setting of the chamfered structure makes it easier for the blade shaft 1 to enter the shaft sleeve 42 during the installation process, thereby improving the installation efficiency.
  • the present application also provides an air blade shaft sleeve 42 which includes an inner hole 421 including a first hole portion 4211 and a second hole portion 4212.
  • the diameter of the first hole portion 4211 is greater than A diameter of the second hole portion 4212.
  • the diameter of the inner hole 421 between the first hole portion 4211 and the second hole portion 4212 is the same as the diameter of the first hole portion 4211, and the first hole portion 4211 and the second hole portion 4212 have the same diameter.
  • a hole step portion 422 is provided therebetween, and a chamfered structure is formed on the hole step portion 422.
  • the shaft sleeve 42 is glued in the blade hole 411, and then the clamping spring is clamped on the blade shaft 1.
  • a gasket 5 can also be installed on the clamping spring to make the installation More stable, then the blade 4 is assembled on the blade shaft 1, and finally the blade knob 3 is rotated and tightened to fix the blade 4 on the blade shaft 1.
  • the invention replaces the original overall fit through the form of a partial interference fit between the shaft sleeve 42 and the upper and lower ends of the blade shaft 1, and solves the problem of eccentric assembly of the fan shaft hole.
  • the coaxiality between the shaft sleeve 42 and the blade shaft 1 is poor, which causes a problem of head jitter.
  • the mating part is an interference fit at both ends and a clearance fit in the middle, which makes it more convenient for the user to disassemble the wind blade 4.
  • the shaft sleeve 42 is easier to process, which improves production efficiency and saves costs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种风叶轴（1）及其与风叶（4）的装配结构和轴套（42），风叶轴（1）包括驱动端和自由端，驱动端与用于驱动风叶轴（1）转动的驱动装置（2）相连，风叶（4）设置在驱动端和自由端之间，风叶轴（1）与风叶（4）配合的部分包括靠近驱动端的第一配合部（11）和靠近自由端的第二配合部（12），第一配合部（11）的直径大于第二配合部（12）的直径。通过将风叶轴（1）构造为阶梯轴，能够使得轴套（42）和风叶轴（1）两端构造为局部过盈配合形式，解决了风扇轴孔配合装配偏心导致风扇机头抖动的问题。

Description

风叶轴及其与风叶的装配结构和轴套 技术领域
本发明涉及风扇设备技术领域，特别是一种风叶轴及其与风叶的装配结构和轴套。
背景技术
目前，在整个风扇行业，风扇机头都会出现左右摆动和上下抖动情况，严重影响运转平稳性。在风扇的品类中，例如普通落地扇、直流落地扇、台地扇、方形扇等，不同机型在风扇运转过程中都出现过这种情况，现在大多数产品采用在抖动区间不设置档位的方法来避免左右摆动和上下抖动的情况，但是会严重影响档位之间转速跨度均匀性，影响用户体验，降低产品市场竞争力，减弱品牌影响力。
现在风叶与电机轴装配结构，为了便于用户装拆风叶，配合间隙较大，必然会导致装配偏心的问题，导致不平衡质量增加，引起风扇机头抖动严重的问题。
现在针对装配风叶偏心，导致的风扇不平衡质量增大的抖动问题，若采用提高加工精度，缩小装配间隙的方法，不但增加了生产加工的成本，并且给用户装拆增加了困难。
发明内容
有鉴于此，本发明的目的之一在于提供一种风叶轴及其与风叶的装配结构和轴套，通过将风叶轴构造为阶梯轴，实现轴套和风叶轴两端的局部过盈配合，代替了原有的整体配合，解决了风扇轴孔配合装配偏心的问题。
为达到上述目的，一方面，本发明采用如下技术方案：
一种风叶轴，用于与风叶配合，所述风叶轴包括驱动端和自由端，所述驱动端与用于驱动所述风叶轴转动的驱动装置相连，所述风叶设置在所述驱动端和自由端之间，所述风叶轴与所述风叶配合的部分包括靠近所述驱动端的第一配合部和靠近所述自由端的第二配合部，所述第一配合部的直径大于所述第二配合部的直径。
优选地，在所述第一配合部的远离所述自由端的一侧设置有第一限位结构，用于限定风叶的朝向所述驱动装置的轴向位置；和/或，
在所述自由端设置有连接部，用于与配合结构相连接，所述配合结构用于限定所述风叶朝向所述自由端的轴向位置。
优选地，所述风叶轴包括轴本体，
所述第一限位结构包括设置在所述轴本体上的径向凸起结构；
所述连接部包括设置在所述轴本体上的螺纹结构。
优选地，所述第一配合部和第二配合部之间设置有轴台阶部，所述轴台阶部的大直径侧包括所述第一配合部，所述轴台阶部的小直径侧包括所述第二配合部，在所述轴台阶部上形成有倒角结构。
优选地，所述连接部的直径小于所述第二配合部的直径，在所述连接部和第二配合部之间设置有环形凹槽。
优选地，所述风叶轴为电机轴。
另一方面，本发明采用如下技术方案：
一种如上所述的风叶轴与风叶的装配结构，所述风叶包括轴套，所述风叶轴插入所述轴套的内孔中，所述内孔包括与所述第一配合部相配合的第一孔部和与所述第二配合部相配合的第二孔部，所述第一孔部的直径大于所述第二孔部的直径。
优选地，所述第一配合部和第一孔部之间为过盈配合，和/或，所述第二配合部和第二孔部之间为过盈配合。
优选地，所述风叶轴和轴套之间的配合构造为，在风叶轴的轴向上，位于第一配合部和第二配合部之间的配合至少一部分为间隙配合。
优选地，所述第一孔部和所述第二孔部之间的内孔的孔径与所述第一孔部的直径相同，所述第一配合部和第二配合部之间的风叶轴直径与所述第二配合部的直径相同。
优选地，在第一孔部和第二孔部之间设置有孔台阶部，所述孔台阶部上形成有倒角结构。
优选地，所述风叶包括风叶本体，在所述风叶本体的径向中心位置设置有风叶孔，所述轴套粘接在所述风叶孔中。
另一方面，本发明提供如下技术方案：
一种应用于如上所述的装配结构中的风叶轴套，所述轴套包括内孔，所述内孔包括第一孔部和第二孔部，所述第一孔部的直径大于所述第二孔部的直径。
优选地，所述第一孔部和所述第二孔部之间的内孔的孔径与所述第一孔部的直径相同，在第一孔部和第二孔部之间设置有孔台阶部，所述孔台阶部上形成有倒角结构。
本发明提供的风叶轴及其与风叶的装配结构和轴套，通过将风叶轴构造为阶梯轴，能够实现轴套和风叶轴两端的局部过盈配合，代替了原有的整体配合，解决了风扇轴孔配合装配偏心的问题，可以有效的避免由于风叶装配不正，轴套和风叶轴的同轴度增加，导致的机头抖动问题。另外，使用配合部分为两端过盈配合，中间为间隙配合的形式，使得用户在拆装风叶时更加方便。在轴套注塑加工的过程中，轴套更加容易加工，提高了生产效率，节约了成本。
附图说明
通过以下参照附图对本发明实施例的描述，本发明的上述以及其它目的、特征和优点将更为清楚，在附图中：
图1示出本发明提供的风叶轴的结构示意图；
图2示出本发明提供的风叶轴与风叶的装配结构的分解示意图；
图3示出本发明提供的风叶轴与风叶的装配结构的装配示意图；
图4示出本发明提供的风叶轴与风叶的装配结构的局部放大图；
图5示出本发明提供的轴套的剖视图。
图中，
1、风叶轴；11、第一配合部；12、第二配合部；13、轴本体；14、第一限位结构；15、径向凸起结构；16、连接部；17、轴台阶部；18、环形凹槽；2、驱动装置；3、风叶旋钮；4、风叶；41、风叶本体；411、风叶孔；42、轴套；421、内孔；4211、第一孔部；4212、第二孔部；422、孔台阶部；5、垫片。
具体实施方式
以下基于实施例对本发明进行描述，但是本发明并不仅仅限于这些实施例。在下文对本发明的细节描述中，详尽描述了一些特定的细节部分，为了避免混淆本发明的实质，公知的方法、过程、流程、元件并没有详细叙述。
此外，本领域普通技术人员应当理解，在此提供的附图都是为了说明的目的，并且附图不一定是按比例绘制的。
除非上下文明确要求，否则整个说明书和权利要求书中的“包括”、“包含”等类似词语应当解释为包含的含义而不是排他或穷举的含义；也就是说，是“包括但不限于”的含义。
在本发明的描述中，需要理解的是，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
本申请提供了一种风叶轴1，例如风扇上的风叶轴。如图1-5所示，所述风叶轴1包括与用于驱动所述风叶轴1转动的驱动装置2相连的驱动端和远离所述驱动装置2的自由端，所述风叶4设置在所述驱动端和自由端之间，从而使得所述风叶轴1能够带动所述风叶4转动，所述风叶轴1与所述风叶4配合的部分包括靠近所述驱动端的第一配合部11和靠近所述自由端的第二配合部12，所述第一配合部11的直径大于所述第二配合部12的直径。通过将风叶轴1构造为阶梯轴的形式，可使得风叶轴1和风叶轴套的两端为局部过盈配合，而中间可以为间隙配合，能够有效解决风扇轴孔配合装配偏心的问题。
优选地，所述风叶轴1包括轴本体13，在所述第一配合部11的远离所述自由端的一侧设置有第一限位结构14，所述第一限位结构14包括设置在所述轴本体13上的径向凸起结构15，例如可以为卡簧，用于限定风叶4的朝向所述驱动装置2的轴向位置，和/或，在所述自由端设置有连接部16，所述连接部16包括设置在所述轴本体13上的螺纹结构，用于与配合结构相连接，优选地，所述配合结构为风叶旋钮3，所述风叶旋钮3与所述螺纹结构旋转进行紧固配合，用于限定所述风叶4朝向所述自由端的轴向位置，通过所述第一限位结构14和配合结构的设置，使得风叶4限制在所述驱动端和自由端之间，防止风叶4在轴向方向的移动，保证安装可靠性和稳定性。
进一步地，所述第一配合部11和第二配合部12之间设置有轴台阶部17，所述轴台阶部17的大直径侧包括所述第一配合部11，所述轴台阶部17的小直径侧包括所述第二配合部12，在所述轴台阶部17上形成有倒角结构。所述倒角结构使得用户在安装风叶4时，不容易卡死，并能够使得安装过程更容易。
优选地，所述连接部16的直径小于所述第二配合部12的直径，在所述连接部16和第二配合部12之间设置有环形凹槽18，所述环形凹槽18用于所述第二配合部12和连接部16的过渡，更方便加工过程，提高生产效率。
进一步地，所述风叶轴1为电机轴，用于驱动所述风叶轴1转动的驱动装置2为电机。
本申请还提供一种风叶轴1与风叶4的装配结构，如图1至图5所示，所述风叶4包括风叶本体41和轴套42，在所述风叶本体41的径向中心位置设置有风叶孔411，所述轴套42粘接在所述风叶孔411中，所述轴套42包括内孔421，所述风叶轴1插入所述轴套42的内孔421中，从而所述风叶轴1能够带动所述风叶4转动，所述内孔421包括与所述第一配合部11相配合的第一孔部4211和与所述第二配合部12相配合的第二孔部4212，所述第一孔部4211的直径大于所述第二孔部4212的直径。优选地，所述第一配合部11和第一孔部4211之间为过盈配合，和/或，所述第二配合部12和第二孔部4212之间为过盈配合。由于两端过盈配合的存在，保证装配间隙较小和减少轴孔配合装配偏心情况，减小了不平衡质量，从而有效的减小风叶4振动的幅值，使抖动情况减轻。
进一步地，所述风叶轴1和轴套42之间的配合构造为，在风叶轴1的轴向上，位于第一配合部11和第二配合部12之间的配合至少一部分为间隙配合。间隙配合的设置使得用户在整个拆装过程中，更加容易，并且在注塑过程中，轴套42更加容易加工，提高了生产效率，节约了成本。
优选地，所述第一孔部4211和所述第二孔部4212之间的内孔421的孔径与所述第一孔部4211的直径相同，所述第一配合部11和第二配合部12之间的风叶轴1的直径与所述第二配合部12的直径相同，从而第一配合部11和第二配合部12之间的风叶轴1的直径小于所述第一孔部4211和所述第二孔部4212之间的内孔421的孔径，使得第一配合部11和第二配合部12之间的配合为间隙配合。
优选地，在第一孔部4211和第二孔部4212之间设置有孔台阶部422，所述孔台阶部422上形成有倒角结构。倒角结构的设置使得风叶轴1在安装过程中更容易进入到轴套42中，提高安装效率。
本申请还提供一种风叶轴套42，所述轴套42包括内孔421，所述内孔421包括第一孔部4211和第二孔部4212，所述第一孔部4211的直径大于所述第二孔部4212的直径。优选地，所述第一孔部4211和所述第二孔部4212之间的内孔421的孔径与所述第一孔部4211的直径相同，在第一孔部4211和第二孔部4212之间设置有孔台阶部422，所述孔台阶部422上形成有倒角结构。
在具体的安装过程中，首先将轴套42粘接在风叶孔411中，再将卡簧卡在风叶轴1上，优选地，还可在在卡簧上安装垫片5，使得安装更加稳定，然后将风叶4装配到到风叶轴1上，最后将风叶旋钮3旋转拧紧将风叶4固定在风叶轴1上。
本发明通过轴套42和风叶轴1上下两端的局部过盈配合的形式代替了原有的整体配合，解决了风扇轴孔配合装配偏心的问题，可以有效的避免由于风叶4装配不正，使得轴套42和风叶轴1的同轴度差，导致的机头抖动问题。另外，使用配合部分为两端过盈配合，中间为间隙配合的形式，使得用户在拆装风叶4时更加方便。在轴套42注塑加工的过程中，轴套42更加容易加工，提高了生产效率，节约了成本。
本领域的技术人员容易理解的是，在不冲突的前提下，上述各优选方案可以自由地组合、叠加。
应当理解，上述的实施方式仅是示例性的，而非限制性的，在不偏离本发明的基本原理的情况下，本领域的技术人员可以针对上述细节做出的各种明显的或等同的修改或替换，都将包含于本发明的权利要求范围内。

Claims (14)

  1. 一种风叶轴，用于与风叶配合，其特征在于，所述风叶轴包括驱动端和自由端，所述驱动端与用于驱动所述风叶轴转动的驱动装置相连，所述风叶设置在所述驱动端和自由端之间，所述风叶轴与所述风叶配合的部分包括靠近所述驱动端的第一配合部和靠近所述自由端的第二配合部，所述第一配合部的直径大于所述第二配合部的直径。
  2. 根据权利要求1所述的风叶轴，其特征在于，
    在所述第一配合部的远离所述自由端的一侧设置有第一限位结构，用于限定风叶的朝向所述驱动装置的轴向位置；和/或，
    在所述自由端设置有连接部，用于与配合结构相连接，所述配合结构用于限定所述风叶朝向所述自由端的轴向位置。
  3. 根据权利要求2所述的风叶轴，其特征在于，所述风叶轴包括轴本体，
    所述第一限位结构包括设置在所述轴本体上的径向凸起结构；
    所述连接部包括设置在所述轴本体上的螺纹结构。
  4. 根据权利要求1所述的风叶轴，其特征在于，所述第一配合部和第二配合部之间设置有轴台阶部，所述第一配合部设置在所述轴台阶部的大直径侧，所述第二配合部设置在所述轴台阶部的小直径侧，在所述轴台阶部上形成有倒角结构。
  5. 根据权利要求2所述的风叶轴，其特征在于，所述连接部的直径小于所述第二配合部的直径，在所述连接部和第二配合部之间设置有环形凹槽。
  6. 根据权利要求1-5之一所述的风叶轴，其特征在于，所述风叶轴为电机轴。
  7. 一种根据权利要求1-6之一的风叶轴与风叶的装配结构，其特征在于，所述风叶包括轴套，所述风叶轴插入所述轴套的内孔中，所述内孔包括与所述第一配合部相配合的第一孔部和与所述第二配合部相配合的第二孔部，所述第一孔部的直径大于所述第二孔部的直径。
  8. 根据权利要求7所述的风叶轴与风叶的装配结构，其特征在于，所述第一配合部和第一孔部之间为过盈配合，和/或，所述第二配合部和第二孔部之间为过盈配合。
  9. 根据权利要求8所述的风叶轴与风叶的装配结构，其特征在于，所述风叶轴和轴套之间的配合构造为，在风叶轴的轴向上，位于第一配合部和第二配合部之间的配合至少一部分为间隙配合。
  10. 根据权利要求7所述的风叶轴与风叶的装配结构，其特征在于，所述第一孔部和所述第二孔部之间的内孔的孔径与所述第一孔部的直径相同，所述第一配合部和第二配合部之间的风叶轴直径与所述第二配合部的直径相同。
  11. 根据权利要求7所述的风叶轴与风叶的装配结构，其特征在于，在所述第一孔部和第二孔部之间设置有孔台阶部，所述孔台阶部上形成有倒角结构。
  12. 根据权利要求7-11之一所述的风叶轴与风叶的装配结构，其特征在于，所述风叶包括风叶本体，在所述风叶本体的径向中心位置设置有风叶孔，所述轴套粘接在所述风叶孔中。
  13. 一种应用于权利要求7-12之一中的风叶轴与风叶的装配结构中的风叶轴套，其特征在于，所述轴套包括内孔，所述内孔包括第一孔部和第二孔部，所述第一孔部的直径大于所述第二孔部的直径。
  14. 根据权利要求13所述的风叶轴套，其特征在于，所述第一孔部和所述第二孔部之间的内孔的孔径与所述第一孔部的直径相同，在第一孔部和第二孔部之间设置有孔台阶部，所述孔台阶部上形成有倒角结构。
PCT/CN2018/121135 2018-08-29 2018-12-14 风叶轴及其与风叶的装配结构和轴套 WO2020042440A1 (zh)

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