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公开(公告)号：US5904622A
公开(公告)日：1999-05-18
申请号：US928991
申请日：1997-09-12
CPC分类号： F16C3/023 , Y10S464/903 , Y10T464/50
摘要： A noise reduction structure for a vehicle driveshaft assembly insures that each of the interior chambers of the driveshaft tube is properly vented during use. The noise reduction structure is a solid member having a predetermined length and a cross sectional shape which corresponds generally to the cross sectional shape of the driveshaft tube. Preferably, the noise reduction structure has an outer diameter which is approximately equal to, or slightly larger than, the inner diameter of the driveshaft tube. As such, the noise reduction structure engages the inner surface of the driveshaft tube in a light press fit relationship. Each noise reduction structure has a passageway, groove, or other opening formed therein which extends axially throughout its length. In a preferred embodiment, an axially-extending groove is formed on the outer circumferential surface of the noise reduction structure. The groove provides for free air flow from one end of the noise reduction structure to the other, thereby insuring that each of the interior chambers of the driveshaft tube is properly vented during use.
摘要翻译： 用于车辆驱动轴组件的降噪结构确保在使用期间驱动轴管的每个内部腔室被适当地排气。 噪声降低结构是具有预定长度和横截面形状的实心构件，其大致对应于驱动轴管的横截面形状。 优选地，降噪结构的外径大致等于或略大于驱动轴管的内径。 因此，降噪结构以轻压配合关系与驱动轴管的内表面接合。 每个降噪结构具有形成在其中的通道，凹槽或其它开口，其在其整个长度上轴向延伸。 在优选实施例中，在减噪结构的外周面上形成有轴向延伸的槽。 凹槽提供从减噪结构的一端到另一端的自由空气流动，从而确保驱动轴管的每个内部腔室在使用期间被适当地排气。
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公开(公告)号：US07178423B2
公开(公告)日：2007-02-20
申请号：US10306394
申请日：2002-11-27
IPC分类号： F16F15/12
CPC分类号： F16F15/1442 , F16C3/02 , F16D3/387 , Y10T74/2121 , Y10T74/2131 , Y10T74/2184 , Y10T464/40 , Y10T464/50
摘要： A noise and vibration damper for use with a rotatable structure, such as a driveshaft assembly for a vehicular drive train system, includes an inner member, an elastomeric member that extends about the inner member, and an outer member that extends about the elastomeric member. The inner member is formed from a sheet of material that has been deformed to a desired shape, while the outer member is formed from a tube of material having a length that is selected to provide the desired dampening frequency. The natural resonant frequency of the noise and vibration damper can be adjusted by varying either or both of the shape of the inner member or the axial length of the outer member of the noise and vibration damper. In both instances, the weight distribution of the components of the noise and vibration damper is altered. As a result, the rotational inertia (and, therefore, the natural resonant frequency) of the noise and vibration damper can be altered to absorb the undesirable noise and vibration applied to the drive train system and to minimize the amount of such noise and vibration that is transmitted and amplified by the drive train system.
摘要翻译： 用于可旋转结构的噪声和振动阻尼器，例如用于车辆传动系统的驱动轴组件，包括内部构件，围绕内部构件延伸的弹性体构件和围绕弹性体构件延伸的外部构件。 内部构件由已经变形为所需形状的材料片形成，而外部构件由具有选择的长度的材料管形成以提供期望的阻尼频率。 可以通过改变内部构件的形状或噪声和振动阻尼器的外部构件的轴向长度中的一个或两个来调节噪声和振动阻尼器的固有谐振频率。 在这两种情况下，噪声和振动阻尼器的部件的重量分布被改变。 结果，可以改变噪声和振动阻尼器的旋转惯量（和因此的固有谐振频率），以吸收施加到传动系系统的不期望的噪声和振动，并且将最小化这样的噪声和振动的量最小化 由传动系统传输和放大。
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公开(公告)号：US06234911B1
公开(公告)日：2001-05-22
申请号：US08928158
申请日：1997-09-12
IPC分类号： F16C300
CPC分类号： F16F15/322 , F16C3/023 , F16C2326/06 , Y10S464/903
摘要： A noise reduction structure for an aluminum-based driveshaft tube includes a generally cylindrical member having a predetermined length. The noise reduction structure is disposed within a driveshaft tube in a press fit relationship with the inner surface of the tube. In general, the noise reduction structure is positioned within the driveshaft tube at a location where the amplitude of a standing wave caused by the reflection of the sound waves back and forth along the driveshaft tube is at its maximum value. The length of the noise reduction structure may be about 10% or less of the value of the length of the driveshaft tube. In a first embodiment, the noise reduction structure is formed from a polymeric foam material having a density of less than about 10 lb/ft3. Preferably, the material has a density in the range of about 2 lb/ft3 to 10 lb/ft3, and more preferably, in the range of about 3 lb/ft3 to 7 lb/ft3. One type of material which is particularly well suited for this invention is a polymeric cushioning foam having a density of about 5 lb/ft3. In a second embodiment, the noise reduction structure is formed from a plurality of relative long cylindrical members that are press fit within the driveshaft tube and are located equidistantly from one another. Each of these cylindrical members is preferably formed from a polyether material having density of at least 1.4 lb/ft3, and most desirably are formed having a density of 1.5 lb/ft3. In a third embodiment, the noise reduction structure is formed from a single elongated cylindrical member that is press fit within the driveshaft tube and is preferably formed from a polyether material having density of at least 1.4 lb/ft3, and more desirably is formed having a density of 1.5 lb/ft3. One or both of the end portions of the driveshaft tube may be formed having a reduced diameter.
摘要翻译： 用于铝基驱动轴管的降噪结构包括具有预定长度的大致圆柱形的构件。 降噪结构以与管的内表面压配合的关系设置在驱动轴管内。 通常，噪音降低结构位于驱动轴管内的位置，其中由沿着驱动轴管的前后的声波的反射引起的驻波的振幅处于其最大值。 噪声降低结构的长度可以是驱动轴管的长度值的大约10％或更小。 在第一实施例中，降噪结构由密度小于约10lb / ft 3的聚合物泡沫材料形成。 优选地，该材料的密度在约2lb / ft 3至10lb / ft 3的范围内，更优选在约3lb / ft 3至7lb / ft 3的范围内。 特别适用于本发明的一种类型的材料是密度为约5lb / ft 3的聚合缓冲泡沫。 在第二实施例中，降噪结构由多个相对较长的圆柱形构件形成，该多个相对长的圆柱形构件压配合在驱动轴管内并彼此等距定位。 这些圆柱形构件中的每一个优选地由密度为至少1.4lb / ft 3的聚醚材料形成，并且最希望地形成为具有1.5lb / ft 3的密度。 在第三实施例中，噪声降低结构由压配合在驱动轴管内的单个细长圆柱形构件形成，并且优选地由密度为至少1.4lb / ft 3的聚醚材料形成，并且更理想地形成为具有 密度为1.5 lb / ft3。 驱动轴管的一个或两个端部可以形成为具有减小的直径。
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4.发明授权Apparatus and method for installing a noise reduction structure within a vehicle driveshaft tube 失效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
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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5.发明授权公开(公告)号：US06475093B1
公开(公告)日：2002-11-05
申请号：US09725648
申请日：2000-11-29
IPC分类号： F16L5700
CPC分类号： F16L57/005 , F16D3/06 , F16D3/387 , F16D3/84 , F16L55/1152
摘要： A two piece cover assembly for protectively covering an end of a component, such as a slip yoke, in a vehicle drive train assembly includes a tubular piece and a cap piece. The tubular piece is hollow and is adapted to fit over and frictionally engage an end portion of the component. A portion of the tubular piece may be deformed to provide such frictional engagement. The cap piece is removably attached to the tubular piece by cooperating retaining structures provided thereon.
摘要翻译： 用于保护性地覆盖车辆传动系组件中的诸如滑动轭的部件的端部的两件式盖组件包括管状件和帽件。 管状件是中空的并且适于装配在组件的端部上并摩擦地接合。 管状件的一部分可以变形以提供这种摩擦接合。 盖件通过配合在其上的保持结构可拆卸地附接到管状件上。
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