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    • 71. 发明授权
    • Method and apparatus of reducing acoustic noise in switched reluctance
electric motor
    • 降低开关磁阻电机噪声的方法和装置
    • US5973462A
    • 1999-10-26
    • US50881
    • 1998-03-30
    • Ramani R. KalpathiNing LiuScott E. BlackburnSergei F. Kolomeitsev
    • Ramani R. KalpathiNing LiuScott E. BlackburnSergei F. Kolomeitsev
    • H02P25/08H02K23/00
    • H02P25/08
    • A switched reluctance motor drive includes a noise reduction circuit configured to control the decay of current when a motor phase is switched from active to inactive. The current decay is controlled to occur in two stages: a first portion and a second portion. The first portion is controlled by alternately activating and deactivating one of the two switches in the two switch drive topology to obtain a current profile conforming to a predetermined profile. The current decay in the second portion of the inactive interval occurs by keeping both switches off so that it decays naturally. The duration of the first portion of the inactive interval is different for each motor phase, as is the duty cycle of the switch gating signal driving the switch that is alternately activated and deactivated. The scheme reduces the acoustic noise generated during operation of the motor.
    • 开关磁阻电动机驱动器包括噪声降低电路,其被配置为当电动机相位从有效切换到不活动时控制电流的衰减。 电流衰减被控制在两个阶段中:第一部分和第二部分。 通过交替地激活和去激活两个开关驱动器拓扑中的两个开关中的一个以获得符合预定配置的电流曲线来控制第一部分。 无效间隔的第二部分中的电流衰减是通过将两个开关保持关闭而使其自然衰减而发生的。 无效间隔的第一部分的持续时间对于每个电动机相位是不同的,开关门控信号的占空比驱动交替地激活和去激活的开关。 该方案可减少电机运行过程中产生的声音噪声。
    • 72. 发明授权
    • Wrap spring clutch/brake assembly having soft start and soft stop
capabilities
    • 具有软启动和软停止功能的弹簧离合器/制动器组件
    • US5967274A
    • 1999-10-19
    • US955863
    • 1997-10-21
    • Michael F. LeoneRussell K. Warner
    • Michael F. LeoneRussell K. Warner
    • F16D27/105F16D55/00F16D65/18F16D67/06F16D13/08
    • F16D27/105
    • A wrap spring operating mechanism for use in a random start/stop clutch, brake, or combined clutch/brake assembly limits the rate of acceleration or deceleration of the second member relative to the first member when the assembly is engaged. The assembly includes a first member, a second member, and a helical spring wrapped about adjacent portions of the first and second members. An annular control collar is disposed circumferentially about portions of the first and second members. The wrap spring has a first end that is connected to the first member and a second end that is connected to the control collar. An annular armature is connected to the control collar for rotational movement therewith and for relative axial movement. An annular rotor is disposed circumferentially about and connected to the second member. An annular friction ring is disposed within a recess formed in the rotor. The friction ring is formed from a material having a relatively low coefficient of friction, preferably about 0.2 or less under both wet and dry conditions. An electromagnetic coil assembly is provided for selective moving the armature into frictional engagement with the friction ring carried on the rotor to engage the assembly. By forming the friction ring from a non-magnetically permeable material having a relatively low coefficient of friction, the time duration of the frictional engagement of the armature with the friction plate is enlarged. As a result, the rate of acceleration or deceleration of the second member relative to the first member is limited to prevent undesirable impact loads from being generated, particularly when the assembly is operated at high speeds or when relatively large load are placed thereupon.
    • 用于随机起动/停止离合器,制动器或组合离合器/制动器组件中的卷绕弹簧操作机构限制当组件接合时第二构件相对于第一构件的加速或减速的速度。 组件包括第一构件,第二构件和围绕第一构件和第二构件的相邻部分缠绕的螺旋弹簧。 围绕第一和第二构件的部分周向地设置环形控制环。 卷绕弹簧具有连接到第一构件的第一端和连接到控制套环的第二端。 环形电枢连接到控制环,用于与其一起旋转运动并用于相对的轴向运动。 围绕第二构件周向地设置环形转子。 环形摩擦环设置在形成在转子中的凹部内。 摩擦环由在湿和干燥条件下具有较低摩擦系数,优选约0.2或更小的材料形成。 提供电磁线圈组件,用于选择性地将衔铁移动到与承载在转子上的摩擦环摩擦接合以接合组件。 通过从具有相对较低摩擦系数的非导磁材料形成摩擦环,衔铁与摩擦片的摩擦接合的持续时间增加。 结果,第二构件相对于第一构件的加速或减速的速度受到限制,以防止产生不期望的冲击载荷,特别是当组件以高速操作或者当相对较大的载荷放置在其上时。
    • 73. 发明授权
    • S-cam brake bushing cartridge
    • S型凸轮制动衬套筒
    • US5964325A
    • 1999-10-12
    • US948732
    • 1997-10-10
    • Kent Eugene DavisonMartin G. Blessing
    • Kent Eugene DavisonMartin G. Blessing
    • F16C23/04F16C33/10F16D51/22F16D65/14F16D65/22F16D51/00F16C33/74
    • F16C23/045F16C33/102F16D51/22F16D65/22F16D2125/30F16D2125/56
    • An improved bushing assembly for the inboard end of a brake cam shaft is provided with a bushing which establishes a grease flow pathway within the bushing assembly. Grease enters a cavity formed from a pair of housing halves which contain the bushing through a grease zerk which is directly connected to a first radial hole in the bushing, so the fresh grease injected goes directly to the grease reservoir between the bushing and the shaft. Flow channels provided in the bushing interior surface guide the grease around the shaft to a second radial hole which is diametrically opposite the first radial hole. A seal on the shaft restricts grease flow outwardly from the bushing along the shaft. Grease may be purged through the second radial hole to an annular space between the bushing and the interior surfaces of the housing halves, from which the grease may exit the housing around the periphery of a window in one of the housing halves through which the grease zerk passes.
    • 用于制动器凸轮轴的内侧端的改进的衬套组件设置有衬套,其在衬套组件内建立润滑脂流动路径。 油脂进入由一对壳体半部形成的空腔,其通过直接连接到衬套中的第一径向孔的润滑剂夹持容纳衬套,因此注入的新鲜的油脂直接进入衬套和轴之间的油脂储存器。 设置在衬套内表面中的流动通道将轴周围的油脂引导到与第一径向孔径向相对的第二径向孔。 轴上的密封件限制润滑脂沿着轴向从套管向外流出。 润滑脂可以通过第二径向孔被吹扫到套管和壳体半部的内表面之间的环形空间中,润滑脂可以从外壳半部中的一个外壳半部中的窗口的周边离开壳体,通过该润滑脂 通过
    • 74. 发明授权
    • Split taper bushing
    • 分体锥套
    • US5961219A
    • 1999-10-05
    • US41651
    • 1998-03-13
    • Garth B. Maughan
    • Garth B. Maughan
    • F16F1/38F16C17/02
    • F16F1/38
    • A split taper bushing assembly includes a bearing member, an inner sleeve received in a hollow center defined by the bearing and an optional outer sleeve which receives the bearing member in an open center defined therein. The bearing member also includes a tapered skirt. The skirt includes a slit which permits the bearing member to contract during assembly to account for variances in its dimensional tolerances, thus ensuring a proper fit between the bearing member and any mating part. The bearing member is formed using a polyurethane type material. Since such a material resists deterioration due to contact with lubricants commonly used in the automotive industry, the bushing assembly can be relubricated during operation without any destructive affect on the bearing member.
    • 分开的锥形衬套组件包括轴承构件,容纳在由轴承限定的中空中心中的内套筒和可选的外套筒,其将限定在其中的开口中心接收轴承构件。 轴承构件还包括锥形裙部。 裙部包括狭缝,其允许轴承构件在组装期间收缩以考虑其尺寸公差的变化,从而确保在轴承构件和任何配合部件之间的适当配合。 使用聚氨酯类材料形成轴承部件。 由于这种材料抵抗由于与汽车工业中通常使用的润滑剂的接触而导致的劣化,因此衬套组件可以在运行期间被再润滑而对轴承构件没有任何破坏性的影响。
    • 77. 发明授权
    • Method of manufacturing a rotor for an electromagnetic clutch assembly
    • 制造用于电磁离合器组件的转子的方法
    • US5920981A
    • 1999-07-13
    • US823990
    • 1997-03-25
    • R. James BushelleDanny L. GanderMichael J. SiegmundDavid J. Yaniak
    • R. James BushelleDanny L. GanderMichael J. SiegmundDavid J. Yaniak
    • B21D53/26F16D27/112F16D27/14H01F41/02
    • B21K23/00F16D27/112F16D27/14F16D2250/00Y10T29/4902Y10T29/49075
    • A method for manufacturing a rotor for use in an electromagnetic friction clutch includes the initial step of forming a flat circular blank of material into a generally cup-shaped outer rotor piece including a flat circular base portion and an annular flange portion. A piercing operation is performed to form a non-circular opening through the base portion of the outer rotor piece. Then, a plurality of concentric arrays of discontinuous recesses are formed sequentially in the outer rotor piece from the radially outermost area of the base portion to the radially innermost area of the base portion. This sequential forming virtually eliminates any manufacturing related stresses in the radially innermost region of bridge areas defined between adjacent recesses, while focusing such stresses toward the radially outermost regions of the bridge areas. A piercing operation is next performed on the outer rotor piece so as to form a circular opening therethrough. Next, a portion of the outer circumferential surface of the annular flange portion of the outer rotor piece is deformed so as to provide a circumferential rib thereabout. The next step in the method is to form a precise circumferential inner surface for the opening. This inner circumferential surface provides a seat to accurately position a hollow cylindrical inner rotor piece relative to the outer rotor piece. The inner rotor piece is also formed from a magnetically permeable material, such as a ferromagnetic material, and includes an axially extending protrusion which extends within the opening and is piloted on the axially extending surface. The inner rotor piece can then be secured to the outer rotor piece in a conventional manner, such as by laser welding, to form a rotor preform. Lastly, portions of the rotor preform are finish machined to form a rotor.
    • 一种制造用于电磁摩擦离合器的转子的方法包括将材料的扁平圆形坯料形成为包括平坦的圆形基部和环形凸缘部分的大致杯状的外转子片的初始步骤。 执行穿刺操作以形成通过外转子片的基部的非圆形开口。 然后,在外转子片中从基部的径向最外侧区域到基部的径向最内侧的区域依次形成多个不连续凹部的同心排列。 这种顺序形成实际上消除了在相邻凹部之间限定的桥接区域的径向最内部区域中的任何制造相关应力,同时将这些应力聚焦到桥接区域的径向最外侧区域。 接着在外转子片上进行穿孔操作,以形成通过其的圆形开口。 接下来,外转子片的环形凸缘部的外周面的一部分变形,以在其周围形成周向肋。 该方法的下一步是形成开口的精确圆周内表面。 该内圆周表面提供座位以相对于外转子片精确地定位中空的圆柱形内转子片。 内转子片也由诸如铁磁材料的导磁材料形成,并且包括在开口内延伸并在轴向延伸的表面上被引导的轴向延伸突起。 然后可以以常规方式例如通过激光焊接将内转子件固定到外转子件上,以形成转子预制件。 最后,转子预制件的部分被精加工以形成转子。
    • 79. 发明授权
    • Driveshaft assembly with vented noise reduction structure
    • 具有排气降噪结构的驱动轴总成
    • US5904622A
    • 1999-05-18
    • US928991
    • 1997-09-12
    • Douglas E. BreeseKellie L. Stevens
    • Douglas E. BreeseKellie L. Stevens
    • F16C3/02F16C3/00
    • F16C3/023Y10S464/903Y10T464/50
    • 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.
    • 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。
    • 80. 发明授权
    • Vibration sensing and diagnostic system for vehicle drive train
components
    • 车辆传动系组件的振动传感和诊断系统
    • US5893892A
    • 1999-04-13
    • US786424
    • 1997-01-20
    • John M. Loeffler
    • John M. Loeffler
    • F16H63/40G01M13/02B60K17/34
    • G01M13/028F16H57/01F16H2057/012
    • A drive train assembly and monitoring system for indicating the operating condition of the drive train assembly includes a drive train assembly having a power distribution device for distributing rotative power within the drive train. A sensor is attached to a portion of the drive train assembly, the sensor being responsive to the vibration of the portion or component of the drive train assembly for generating signals indicative of the sensed vibration. A controller receives the signals from the sensor and generates an indication of the operating condition of the drive train assembly based on the vibration of the portion of the drive train assembly. Preferably the sensor is adapted to detect both the frequency and magnitude of vibration of the drive train assembly and to generate signals indicative of the sensed frequency and magnitude of vibration.
    • 用于指示传动系组件的操作状态的传动系组件和监视系统包括具有用于在传动系内分配旋转动力的配电装置的传动系组件。 传感器连接到传动系组件的一部分上,传感器响应于传动系组件的部分或部件的振动,用于产生指示感测到的振动的信号。 控制器从传感器接收信号,并基于传动系组件的部分的振动产生传动系组件的操作状态的指示。 优选地,传感器适于检测传动系组件的振动的频率和幅度,并且产生指示感测到的振动的频率和幅度的信号。