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公开(公告)号：US4684835A
公开(公告)日：1987-08-04
申请号：US785157
申请日：1985-10-07
摘要： A motor cooling fan housing for a by-pass vacuum motor is presented. The fan housing includes a top plate connected to a cylindrical side portion. The top plate is characterized by a plurality of uniformly spaced tear-drop shaped slots therein. The slots provide for the entry of cooling air to the motor maintained therein. The slots are elongated and have a major axis which is non-collinear with the center point of the top plate of the housing.
摘要翻译： 介绍了一种用于旁路真空电机的电机冷却风扇外壳。 风扇壳体包括连接到圆柱形侧部的顶板。 顶板的特征在于其中多个均匀间隔的泪滴形槽。 狭槽提供冷却空气进入保持在其中的电动机。 槽是细长的并且具有与壳体的顶板的中心点非共线的长轴。
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公开(公告)号：US4698534A
公开(公告)日：1987-10-06
申请号：US887381
申请日：1986-07-21
摘要： A by-pass vacuum motor assembly wherein the motor cooling fan is positioned in an opening at the bottom of the motor band and immediately above a flat plate portion of the fan housing bracket. The flat plate portion functions as a plate diffuser, redirecting air drawn through the commutator end bracket and across the motor internals into a radial exhaust between a bottom portion of the band and a top portion of the fan end bracket. The invention also includes a brush holder clip passing through a vertical opening in the commutator end bracket and engaging a collar on the brush mechanism. The brush mechanism passes through a horizontal opening in the commutator end bracket which intersects with the vertical opening. Armature grounding is achieved by a disk maintained in a recess in the commutator end bracket and urged by a spring against the bearing receiving the motor shaft. The power wires to the motor are secured by a tab maintained opposite an opening in the commutator end bracket which is itself opposite an opening in the band. Power wires pass through the openings and over the tab, being crimped thereby.
摘要翻译： 旁通真空电动机组件，其中电动机冷却风扇位于电动机带的底部的开口处并且紧靠风扇壳体支架的平板部分的正上方。 平板部分用作板式扩散器，将通过换向器端部支架并跨过电动机内部的空气重新引导到带的底部和风扇端部支架的顶部之间的径向排气。 本发明还包括通过换向器端托架中的垂直开口并且与刷子机构上的套环接合的刷夹夹。 刷子机构穿过与垂直开口相交的换向器端托架中的水平开口。 通过保持在换向器端托架中的凹部中的盘来实现电枢接地，并且由弹簧推压抵靠接收电动机轴的轴承。 电动机的电力线通过保持在与换向器端部托架中的开口相对的突片来固定，换向器端托架本身与带中的开口相对。 电源线穿过开口并穿过突片，由此被压接。
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公开(公告)号：US4669952A
公开(公告)日：1987-06-02
申请号：US735469
申请日：1985-05-17
CPC分类号： F04D29/444 , F04D17/164 , F05D2250/52
摘要： A quiet by-pass vacuum motor wherein a ring-like cavity is defined between inner and outer walls of the housing for a working air fan. Separating members divide the cavity into passageways which communicate with openings in the housing. A plate having a plurality of vanes thereon is received upon the separating members, the plate extending from the outer wall to a position short of the inner wall. A baffle plate is then received upon the vanes. Working air is exhausted over the baffle plate, between the vanes, over the plate and between the separating members and through the openings. The exhaust path greatly reduces the noise level of the vacuum motor.
摘要翻译： 一种安静的旁路真空马达，其中在工作空气风扇的壳体的内壁和外壁之间限定有环形空腔。 分离构件将空腔分成与壳体中的开口连通的通道。 在其上具有多个叶片的板被容纳在分离构件上，该板从外壁延伸到与内壁不足的位置。 然后在叶片上接收挡板。 工作空气在挡板上，叶片之间，板上和分离构件之间以及通过开口排出。 排气路径大大降低了真空电机的噪音水平。
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公开(公告)号：US4621991A
公开(公告)日：1986-11-11
申请号：US704321
申请日：1985-02-22
摘要： A by-pass vacuum motor assembly wherein the motor cooling fan is positioned in an opening at the bottom of the motor band and immediately above a flat plate portion of the fan housing bracket. The flat plate portion functions as a plate diffuser, redirecting air drawn through the commutator end bracket and across the motor internals into a radial exhaust between a bottom portion of the band and a top portion of the fan end bracket. The invention also includes a brush holder clip passing through a vertical opening in the commutator end bracket and engaging a collar on the brush mechanism. The brush mechanism passes through a horizontal opening in the commutator end bracket which intersects with the vertical opening. Armature grounding is achieved by a disk maintained in a recess in the commutator end bracket and urged by a spring against the bearing receiving the motor shaft. The power wires to the motor are secured by a tab maintained opposite an opening in the commutator end bracket which is itself opposite an opening in the band. Power wires pass through the openings and over the tab, being crimped thereby.
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