CN100507291C - 用于例如灌木清除机的手持便携式工具的轴承装置 - Google Patents

用于例如灌木清除机的手持便携式工具的轴承装置 Download PDF

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CN100507291C
CN100507291C CN200580010217.XA CN200580010217A CN100507291C CN 100507291 C CN100507291 C CN 100507291C CN 200580010217 A CN200580010217 A CN 200580010217A CN 100507291 C CN100507291 C CN 100507291C
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China
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sleeve
flange
bearing means
bearing
hand held
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Expired - Fee Related
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CN200580010217.XA
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CN1973140A (zh
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M·克拉格纳
T·恩瓦尔
M·费尔特
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Husqvarna AB
Electrolux AB
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Husqvarna AB
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/26—Construction of guiding-sheathings or guiding-tubes
    • F16C1/28—Construction of guiding-sheathings or guiding-tubes with built in bearings, e.g. sheathing with rolling elements between the sheathing and the core element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
    • F16C1/06—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements with guiding sheathing, tube or box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/02—Sliding-contact bearings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/90—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for carrying by the operator

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Harvester Elements (AREA)
  • Sliding-Contact Bearings (AREA)
  • Scissors And Nippers (AREA)

Abstract

本发明涉及一种用于例如灌木清除机、修剪机等的手持便携式工具的轴承装置，所述装置包括一个细长轴承套筒(13)，该轴承套筒设有向外延伸的凸缘(14)或类似物。该轴承套筒(13)具有非圆形的内表面。

Description

用于例如灌木清除机的手持便携式工具的轴承装置
技术领域
本发明涉及一种用于例如灌木清除机、修剪机等的手持便携式工具的轴承装置，所述装置包括一个细长轴承套筒，其设有向外延伸的凸缘等。
背景技术
上面所提及类型的轴承装置用于支撑细长驱动轴，该驱动轴将来自驱动单元的力传递给设置于管状外壳外端部的远端切割工具。这类轴承装置例如在US5364307、US5599233及DE3839548中描述的，且包括一个细长套筒，该套筒具有圆形横截面，横截面上有向外延伸的凸缘，该凸缘靠在周围的外壳上。为了使得轴承装置能插入外壳，同时当驱动轴旋转时，避免任何窜动，并将轴承套筒保持在中心位置，凸缘做成具有弹性的。这就意味着凸缘和套筒一样必须经过仔细设计，因为如果凸缘太软，在驱动轴产生振动的情况下，其不能正常工作；反之，如果凸缘太硬，轴承装置又很难插入外壳。
发明内容
本发明的目的在于发明一种新型轴承装置，其可以减小由驱动轴所产生的在外壳上的振动，并优化轴承装置的设计和材料厚度。进一步，这种布置允许驱动轴和外壳的直径变化且基本不影响套筒的内部形状。一个附加的优点是轴承装置的形状使得其较之以前的结构能够达到更好的润滑效果。
具体地，本发明提供一种用于例如灌木清除机、修剪机等的手持便携式工具的轴承装置，所述装置包括一个细长轴承套筒，该轴承套筒设有向外延伸的凸缘或类似物，所述轴承套筒具有非圆形的内表面，其特征在于，凸缘材料和套筒材料具有的特性使得朝向套筒的中心、作用于凸缘上的径向力被转换成套筒的弹性变形。
附图说明
现在将参考附图对本发明的一个实施例进行描述，该附图示出了具有轴承装置、驱动轴及外壳的轴承布置的横截面。
具体实施方式
轴承布置包括一个外部的细长管状外壳10，该外壳的一端设有驱动装置，例如内燃机(未示出)或电机，而外壳的另一端设有某种类型的切割工具，例如链锯或修剪机头(未示出)。来自驱动装置的动力经由驱动轴11传递到切割工具。轴承装置12环绕驱动轴，该轴承装置包括轴承套筒13，其具有几个从套筒径向向外延伸的凸缘14。
轴承套筒优选由塑料制成并与凸缘形成一个整体，其具有大体上为三角形的形状，具有三条略微的弧线壁部分15，这些壁部分首尾相连形成了三角形的顶角16。因此，套筒13的内壁与内接于套筒的圆之间的距离从每个壁部分15朝向三角形顶角16的中间部分开始增加。
凸缘14设置在三角形顶角16处且在其外端设有钩形部分17。该钩形部分防止制造收缩发生在钩的尖端部分，这样就意味着零件的外部形状沿直径是稳定的。
为了装配该轴承布置，将轴承12从管状外壳10的一端推入，这种做法意味着凸缘14的钩形部分17将与外壳相结合，并使得凸缘略向里移动从而在三角形的顶角16处压挤套筒13，从而整个轴承装置都能被推入外壳中。套筒的弹力将轴承套筒保持在外壳中适当的位置，驱动轴则能容易地插入轴承套筒中。
当然也可以采用其他几何结构横截面的轴承套筒，例如正方形、五边形、六边形等诸如此类，将凸缘设置在内表面与内接圆隔一段距离的位置点上，从而套筒的材料在凸缘的径向运动中可起到弹簧的作用。

Claims (6)

1、一种用于手持便携式工具的轴承装置，所述装置包括一个细长轴承套筒(13)，该轴承套筒设有向外延伸的凸缘(14)，所述轴承套筒(13)具有非圆形的内表面，其特征在于，凸缘材料和套筒材料具有的特性使得朝向套筒(13)的中心、作用于凸缘(14)上的径向力被转换成套筒(13)的弹性变形。
2、如权利要求1所述的轴承装置，其特征在于，至少一个凸缘(14)从轴承套筒上内表面与套筒内边缘内接圆间隔一段距离的位置点处延伸出来。
3、如权利要求1所述的轴承装置，其特征在于，套筒(13)具有大体为三角形的形状。
4、如权利要求3所述的轴承装置，其特征在于，凸缘(14)从所述三角形的各顶角(16)处大体沿径向向外延伸。
5、如前述任一项权利要求所述的轴承装置，其特征在于，所述至少一个凸缘的外部设有钩形部分(17)。
6.如权利要求1-4中任一项所述的轴承装置，其特征在于：所述手持便携式工具是灌木清除机或修剪机。
CN200580010217.XA 2004-04-02 2005-03-24 用于例如灌木清除机的手持便携式工具的轴承装置 Expired - Fee Related CN100507291C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE04009023 2004-04-02
SE0400902A SE0400902D0 (sv) 2004-04-02 2004-04-02 Bearing means for a hand held portable tool such as a brush cutter

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CN1973140A CN1973140A (zh) 2007-05-30
CN100507291C true CN100507291C (zh) 2009-07-01

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US (1) US20080119292A1 (zh)
EP (1) EP1747381B1 (zh)
CN (1) CN100507291C (zh)
AT (1) ATE378525T1 (zh)
AU (1) AU2005227614A1 (zh)
CA (1) CA2561341A1 (zh)
DE (1) DE602005003350T2 (zh)
SE (1) SE0400902D0 (zh)
WO (1) WO2005095808A1 (zh)

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
US8495817B2 (en) * 2009-02-05 2013-07-30 Actuant Corporation Transmission assembly for a string trimmer
CN101793283B (zh) * 2009-10-30 2011-09-07 宋健 具有断面为三角弧形支撑叶片的旋转软轴支撑管
CN101865200B (zh) * 2010-06-12 2011-11-23 宋健 单片型支撑叶片不对称组合的旋转软轴支撑管
US20120264527A1 (en) * 2011-04-15 2012-10-18 YAT Electrical Appliance Company, LTD Drive cable centering insert
CN102273365A (zh) * 2011-06-02 2011-12-14 山东华盛农业药械有限责任公司 一种割灌机连接盘
DE102017006193A1 (de) * 2017-06-30 2019-01-03 Senvion Gmbh Leitungszentrierung in einer rotierenden Welle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839961A (en) * 1996-06-15 1998-11-24 Andreas Stihl Bearing arrangement for a drive shaft
US6010407A (en) * 1998-03-13 2000-01-04 Taiseikozai Co., Ltd. Flexible shaft liner assembly and torque transmitting shaft

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125382A (en) * 1964-03-17 Well tools
US2651199A (en) * 1946-08-02 1953-09-08 Eastman Oil Well Survey Co Protective guide device for well instruments
GB1558336A (en) * 1978-03-14 1979-12-19 Mono Pumps Ltd Shaft bearing
US5364307A (en) * 1983-05-23 1994-11-15 Vinylex Corporation Coaxial drive cable centering apparatus
US4932846A (en) * 1987-08-06 1990-06-12 Shippensburg Domestic Pump Co. Resilient shaft mounting for pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839961A (en) * 1996-06-15 1998-11-24 Andreas Stihl Bearing arrangement for a drive shaft
US6010407A (en) * 1998-03-13 2000-01-04 Taiseikozai Co., Ltd. Flexible shaft liner assembly and torque transmitting shaft

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EP1747381A1 (en) 2007-01-31
CN1973140A (zh) 2007-05-30
AU2005227614A1 (en) 2005-10-13
US20080119292A1 (en) 2008-05-22
EP1747381B1 (en) 2007-11-14
WO2005095808A1 (en) 2005-10-13
DE602005003350D1 (de) 2007-12-27
SE0400902D0 (sv) 2004-04-02
ATE378525T1 (de) 2007-11-15
DE602005003350T2 (de) 2008-09-11
CA2561341A1 (en) 2005-10-13

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