• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This relates to the mounting of brushes in a rotary electrical joint in a manner wherein the frictional force applied to a brush by a rotary member is restrained so as to eliminate prior tilting of the brush in a manner wherein excessive wear occurred adjacent the leading edge of the brush. Most particularly, the brush is so restrained wherein any tendency thereof to pivot will occur generally about an axis disposed adjacent the leading edge so that there is a uniform force application of the brush against the rotary member and thus a uniform wearing of the brush.
    公开号:SU890996A3
    申请号:SU782663639
    申请日:1978-09-08
    公开日:1981-12-15
    发明作者:А.Пессе Карл；Дж. Транка Ральф；А.Винклесс Роберт
    申请人:Дзе Континентал Груп, Инк (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to electrical engineering, in particular, for making current collection devices for electrically contacting the brush with the inner surface of a rotating cylindrical element.
    A rotating electrical joint is known for electrically contacting the brush with the inner surface of a rotating cylindrical element comprising at least one brush mounted on the shoe and placed on a fixed sleeve on which an elastic element is installed, for example a radial pressing spring between the sleeve and the brush, the shoe at its opposite ends is provided with axial protrusions, which are arranged to interact with the radial grooves made at the ends of the sleeve, and sch the yoke has a front and a back edge depending on the direction of rotation of the cylindrical element P.
    In the fastening of the rotating brushes, the friction force with which the rotating element acts on the brush in the area of its front edge tends to rotate the brush around its middle, and thus the area of the front edge is pressed against the rotating element with greater pressure than the area of the rear edge. As a result, premature wear of the brush occurs.
    The purpose of the invention is to increase the service life of the brush by reducing the radial movement of the front
    10 brush edges when operating the device.
    The goal is achieved by the fact that said axial projections of the shoe are located at the front edge of the brush.
    15
    These axial protrusions have areas with rounded edges, which are located in the zone of interaction with the radial grooves of the sleeve.
    The elastic element can be installed at the rear edge of the brush.
    An additional elastic element is inserted into the device, for example, an squeezing radigshna spring that is located at the front edge of the brush.
    25 and has a squeezing force less than an elastic element located at the rear edge of the brush.
    Figure 1 presents the electrical joint, end view on
    权利要求:
    Claims (4)
    [1]
    30 of FIG. 2 schematically depicts one. from the options of the device, end view; Fig. 3 schematically shows a second embodiment of the device, an end view, Fig. 4 shows a device, an additionally inserted elastic element. An electrical joint for electrically contacting the grid 1 with the inner surface of the rotating cylindrical element 2 comprises at least one brush. mounted on the shoe 3 and placed on the fixed sleeve 4, on which an elastic element is mounted, for example, a radial pressing spring 5 between the sleeve and the brush. The shoe of its opposite ends is provided with axial projections b, which are arranged to interact with the radial guide surfaces 7, " formed at the ends of the sleeve. The brush 1 has a front and a back edge depending on the direction of rotation of the cylindrical element 2. The axial protrusions of the shoe b are located at the front edge of the brush and have sections with rounded edges 8 that are not in contact with the radial guide surfaces 7 of the bushing, The spring element 5 can be installed at the rear edge of the brush. An additional elastic element 9, for example, a pressing radial spring, which is located at the front edge of the brush and has a pressing force less than the elastic element 5 located at the rear edge of the brush 1, can be introduced into the device. The device operates as follows. When the cylindrical element 2 is rotated, in order to ensure the transfer of the necessary electrical energy from the brushes 1 to the element 2, the brushes frictionally touch the internal cylindrical surface of the element 2. In this case, a friction force appears, tending to tilt the brush, as a result of which the front edge presses against element 2 denser than its rear edge, which could lead to increased uneven wear of the brush in the area in front of it; However, due to the location of the axial protrusion 6 of the shoe 3. The front edge of the brush restricts the stroke of the brush and provides a more uniform pressure of the element 2 on the brush 1. In this case, the projection 6 with rounded edges 8 in the area of interaction with the radial guide surfaces 7 of the sleeve reduces friction and provides the possibility of rapid radial movement of the brush, with the protrusion 6 being the only restriction for the brush in rotational movement under the influence of friction forces, and the contact between ak ruglennym edge 8 with the guide surface 7 defines a pivot axis for the brush, excluding uneven pressure on the brush. The spring 5 exerts pressure on the brush in the direction of element 2. The spring can be displaced from the axis of the brush and installed at the rear edge of the brush, which also provides a more uniform pressing of the brush to the rotating element 2. Instead of ONE spring 5 or several springs made in one line, An additional spring 9 should be installed at the front edge of the brush. The squeezing force of the spring 9 must be less than that of the spring 5, which also eliminates the tendency of the front edge of the brush to compress with the force of friction against the rotating element 2 due to the difference in the pressing forces of the springs. Depending on the axial size of the spring brush 9, there may be one or more than one spring. Claim 1. Rotating electrical articulation comprising a rotating element with an inner cylindrical surface in contact with at least one brush that is mounted on the shoe and placed on a fixed sleeve and preloaded by an elastic element, such as a radial release spring, placed between the sleeve and the brush, and the shoe is made with axial protrusions at the ends entering the radial grooves at the ends of the sleeve, characterized in that, in order to increase the service life of the brush by reducing the radial Moving the front edge of the brush, these axial projections of the bailmak are located at the front edge of the brush.
    [2]
    2. The articulation of pop. 1, characterized in that said axial protrusions have areas with rounded edges that are located in the zone of interaction with the radial grooves of the sleeve.
    [3]
    3. Articulation according to claim 1, d.t. l and so that the elastic element is installed at the rear edge of the brush.
    [4]
    4. Articulation according to claim 1 and 3, characterized in that an additional elastic element is inserted, for example, a pressing radial spring, which is located at the front edge of the brush and has a pressing force less than the elastic element located at the rear edge of the brush. Sources of information taken into account in the examination 1. US patent tt 359225, cl. 210-5, 1971.
    Fig.FigL
    类似技术:
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    KR920000200Y1|1992-01-15|Current collectors
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    同族专利:
    公开号 | 公开日
    AU3916978A|1980-02-28|
    CA1088610A|1980-10-28|
    US4174142A|1979-11-13|
    NL7809214A|1979-03-13|
    CH632106A5|1982-09-15|
    AT359595B|1980-11-25|
    DE2837413A1|1979-03-22|
    BE870271A|1979-01-02|
    FR2402952B1|1983-04-01|
    BR7805887A|1979-05-15|
    GB2004133B|1982-01-27|
    DE2838764A1|1979-03-22|
    FR2402952A1|1979-04-06|
    ATA651378A|1980-04-15|
    GB2004133A|1979-03-21|
    SE7808846L|1979-03-10|
    JPS5444146A|1979-04-07|
    JPS6124113B2|1986-06-09|
    AU519461B2|1981-12-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US901976A|1906-02-12|1908-10-27|Gen Electric|Current-collecting means.|
    DE745631C|1940-12-01|1944-05-15|Aeg|Pantographs for electrical machines|
    GB1169984A|1967-01-25|1969-11-12|Nat Res Dev|Improvements relating to Dynamo Electric Machines|
    US3596225A|1969-07-15|1971-07-27|Continental Can Co|Pigtail rotary joint|
    US3681550A|1970-11-18|1972-08-01|Dutton Lainson Co|Motor switch arrangement|
    GB1374243A|1970-11-20|1974-11-20|Nat Res Dev|Electric current-collecting devices|
    DE2130242A1|1971-06-18|1972-12-21|Gerhard Wirmsberger|Device for monitoring the rotational movement of bodies|
    US3942056A|1975-03-27|1976-03-02|General Electric Company|Brush holder and rigging assembly for a dynamoelectric machine|JPH0578398U|1992-03-26|1993-10-26|富士電気化学株式会社|Two-stage punch unit of powder pressure molding machine|
    US5214335A|1992-07-07|1993-05-25|General Motors Corporation|Brush and slip ring apparatus for dynamoelectric machines|
    US5689148A|1994-04-28|1997-11-18|Siemens Electric Limited|Multi-pole, two-speed brush holder assembly|
    WO1995030269A1|1994-04-28|1995-11-09|Siemens Electric Limited|Brush holder assembly|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/831,978|US4174142A|1977-09-09|1977-09-09|Brush mounting for rotary electrical joint|
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