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1. 发明授权

US6023830A Apparatus and method for installing a noise reduction structure within a vehicle driveshaft tube 失效
标题翻译：在车辆驱动轴管内安装降噪结构的装置和方法
公开(公告)号：US6023830A
公开(公告)日：2000-02-15
申请号：US99180
申请日：1998-06-18
申请人： David Alvin Cole , Kellie L. Stevens , Earl L. Brazle , Tyrone L. Bowman , Eric K. Manning , James G. Koedam
发明人： David Alvin Cole , Kellie L. Stevens , Earl L. Brazle , Tyrone L. Bowman , Eric K. Manning , James G. Koedam
IPC分类号： F16C3/02 , F16F15/02 , F16F15/10 , G10K11/16 , B23Q17/00
CPC分类号： F16F15/10 , F16C3/023 , F16F15/02 , G10K11/16 , Y10T29/49764 , Y10T29/49874 , Y10T464/50
摘要： A method for installing a noise reduction structure within a vehicle driveshaft tube includes the initial step of disposing a reducing sleeve adjacent to a first end of the driveshaft tube. The reducing sleeve may define an inner surface that is tapered from a first diameter, which is slightly larger than the uncompressed outer diameter of the noise reduction structure, to a second diameter, which is approximately equal to the diameter of the first end of the driveshaft tube. Alternatively, the reducing sleeve may define an inner surface that is tapered from a first diameter and then rounded to a second diameter. A source of vacuum is disposed adjacent to a second end of the driveshaft tube, opposite the first end. The source of vacuum may be an accumulator tank and compressor assembly or a venturi arrangement. In any event, the noise reduction structure is disposed within the reducing sleeve and a vacuum is generated such that the vacuum draws the noise reduction structure into the driveshaft tube. To control the position of the noise reduction structure within the driveshaft tube, a limit switch can be positioned at a desired location within the driveshaft tube. When the leading end of the noise reduction structure touches the limit switch, the vacuum may be vented to the atmosphere, thereby preventing further movement of the noise reduction structure. Once installed within the driveshaft tube, the noise reduction structure expands outwardly into a light interference fit therewith. If desired, several methods are proposed to increase the force exerted on the noise reduction structure by the source of vacuum.
摘要翻译：一种用于在车辆驱动轴管内安装降噪结构的方法包括将减速套相邻设置在驱动轴管的第一端的初始步骤。还原套筒可以限定内表面，该内表面从比第一直径稍大于噪声降低结构的未压缩外径的第二直径缩小到第二直径，其大致等于驱动轴的第一端的直径管。或者，还原套筒可以限定从第一直径渐缩并然后成圆形至第二直径的内表面。真空源设置在与第一端相对的驱动轴管的第二端附近。真空源可以是储罐和压缩机组件或文氏管布置。无论如何，降噪结构设置在减压套筒内，并产生真空，使得真空将噪音降低结构吸入驱动轴管中。为了控制驱动轴管内的降噪结构的位置，限位开关可以位于驱动轴管内的所需位置。当降噪结构的前端接触限位开关时，真空可以排放到大气中，从而防止降噪结构的进一步移动。一旦安装在驱动轴管内，噪声降低结构向外扩展成与其干涉的光干涉。如果需要，提出了几种方法来增加由真空源施加在降噪结构上的力。

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