• 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:
    Closure wedge (1) for fixing windings arranged in motor-generator winding slots, wherein or the closure wedge (1) has a corrugation in its longitudinal direction at least in regions on its underside (4) facing the winding (2).
    公开号:AT516479A1
    申请号:T820/2014
    申请日:2014-11-12
    公开日:2016-05-15
    发明作者:
    申请人:Seewald Hansjörg Ing；
    IPC主号:
    专利说明:

    The invention relates to a closure wedge for fixing windings arranged in motor or generator winding slots.
    The rotor and stator of an electric motor comprise circumferentially spaced pole shoes along their circumference, between which coil windings, usually copper wire, extend. Not only, but primarily to stabilize the system against vibrations, these grooves are reclosed after insertion of the coil windings with locking wedges.
    In particular, in the case of magnetic closure wedges, vibration phenomena occur during operation, which is disadvantageous for the stability of the winding structure in the motor or generator.
    With a high content of magnetic filling, for example iron content, although the electrical and magnetic properties of the wedge are improved, the mechanical strength decreases greatly. For example, with wedges having a layered structure, delamination of the individual layers occurs, which can lead to breakage of the wedge and, as a consequence, motor failure. Also, generally too loose a fit of the wedge may cause it to further relax by the constant mechanical and magnetic stress until it can move so strongly that delamination occurs.
    The aim of the invention is to provide a sealing wedge with which the above problems can be at least partially solved.
    According to the invention this is achieved in that the Verschlußkeil, which is preferably a Statorkeil, on its winding-facing bottom in the longitudinal direction at least partially has a corrugation.
    The corrugation compensates for the unevenness between the winding and the coil and thus results in a better bonding of the closure wedge to the winding. There may be a polyester felt between the wedge and the copper coil, which is compressed to different degrees by the corrugation on the underside of the wedge according to the invention, thereby achieving a better fixation of the winding and the wedge.
    Preferably, the closure wedge is magnetised, but in the context of the invention it may also be a non-magnetic wedge, for example made of plastic.
    According to another embodiment of the invention, the closure wedge, viewed in cross-section, has stabilizing lugs against loosening of the seat of the closure wedge within the winding groove.
    In practice, it is very difficult to obtain an ideal sinusoidal shape of the corrugation on the underside of the wedge, but the invention also works in deviations from the ideal waveform.
    Thus, according to one embodiment of the invention, the underside may comprise at least one or more half-wave depressions bounded longitudinally by respective planar regions.
    Another variant of the invention may consist in that the underside has at least one or more recesses which have rounded portions at their longitudinal ends and which are delimited in the longitudinal direction by flat areas.
    The undulating configuration of the wedge base may be periodic, but may also include irregular spacing of the undulations and troughs.
    According to one embodiment of the invention, the distance 12 between the recesses may be greater than the length 11 of the recess.
    To acquire state values during operation, sensors, e.g. be designed for temperature or vibration measurement.
    A further embodiment of the invention can therefore consist in that on the underside of the closure wedge in the region of one of the longitudinal ends, a longitudinal groove for receiving a sensor, preferably a temperature sensor, is excluded.
    Furthermore, the invention relates to a composite system tongue and groove closure wedge with one or more closure wedges according to the invention, which is characterized in that the inserted closure wedge is potted together with the winding, the insulation layer and the leveling layer with a binder.
    Preferably, the insulating layer may be formed of mica tapes and the leveling layer of felt, preferably polyester felt.
    In one embodiment, the binder may be a resin.
    The invention is described below with reference to
    Embodiments explained in detail. It shows
    Figure 1 is a partial perspective view of an embodiment of a closure wedge with a coil and groove according to the invention;
    Figure 2 is a partial oblique view of another embodiment of the closure wedge according to the invention from below.
    Fig. 3 is an overall oblique view of the closure wedge according to Fig. 2;
    4 shows a cross section of the closure wedge according to FIG. 2;
    Fig. 5 is a partial side view of the sealing wedge according to Fig. 2;
    Fig. 6 and 7 is a bottom view and a side view of the closure wedge of Figure 2;
    Fig. 8 is a fragmentary longitudinal sectional view of another embodiment of the closure wedge of the invention disposed within one embodiment of the composite system of the present invention;
    Figs. 9 and 10 are a side view and a bottom view of another embodiment of the closure wedge according to the invention;
    Fig.ll a cross section AA and Figure 12 shows a cross section BB through the closure wedge of FIG. 9 and 10 and
    13 is an oblique view from below of the closure wedge according to FIG. 9 and 10.
    Fig.l shows a, in particular magnetic, Verschlusskeil1 which fixes a motor or generator winding 2 in a winding groove 3. In the embodiment shown, the closure wedge is designed as a stator wedge.
    The closure wedge 1 has - seen in cross section - opposite narrow sides stabilizing lugs 8, as shown in Fig. 4 in a cross-sectional view.
    According to the invention, for better fixing of the interlocking wedge 1 within the winding groove 3, the interlocking wedge 1 on its lower side 4 facing the winding 2 has a corrugation in the longitudinal direction at least in regions (FIG. 2).
    The corrugation may e.g. Sinusoidally designed, but also be executed by deviating. Preferably, the recesses have a rounded profile.
    As shown in Figs. 2, 3 and 5, the bottom 4 has a plurality of recesses 10 having rounded portions at their longitudinal ends and delimited in the longitudinal direction by flat areas respectively.
    Alternatively, the underside of the sealing wedge 1 can have half-wave-like recesses 8 which are delimited in each case in the longitudinal direction by planar regions.
    Due to the undulating course of the lower surface 4, along the longitudinal extent of the closure wedge according to the invention, there is a different force acting on the underlying coil 2 and a compensation of manufacturing tolerances, resulting in a better fixation of the sealing wedge in the winding groove.
    The distance 12 between the recesses 10 in the embodiment shown, as shown in FIG. 7, is greater than the length 11 of the recesses 10. This spacing relationship can be adapted to the particular circumstances in the structure of the closure wedge winding system.
    Fig. 8 shows the composite system tongue and groove closure wedge with the closure wedge 1 according to the invention, which has on its underside a corrugation, e.g. by milling, which runs in a finesinusförmig. An insulation layer 21 formed of mica tapes is applied to the winding 22, and on the insulation layer 21 a leveling layer 20, e.g., of polyester felt. The inserted wedge 1, together with the winding 22, the insulating layer 21 and the leveling layer 20, is provided with a binder, e.g. a Harzvergossen. In this case, prepreg elements can be used. As in Fig. 8, it is due to the wavy
    Forming the underside of the closure wedge 1 according to the invention for a different densification of the leveling layer 20 of polyester felt, with a preferred thickness of 1 mm to 5 mm, whereby an improved composite effect of the closure wedge 1 with the winding 22 comes.
    9 to 13 show a further embodiment of the closure wedge according to the invention, in which on the underside 4 of the closure wedge 1 in the region of one of the longitudinal ends, a longitudinal groove 80 for receiving an unillustrated sensor, preferably a temperature sensor, is provided which allows measurements during operation.
    权利要求:
    Claims (12)
    [1]
    CLADDING CLAUSE 1. A closure wedge (1) for fixing windings arranged in motor or generator winding grooves, characterized in that the closure wedge (1) has a corrugation in the longitudinal direction at least in regions along its underside (4) facing the winding (2).
    [2]
    2. Wedge according to claim 1, characterized in that the closure wedge (1) is magnetized.
    [3]
    3. Closure according to claim 1 or 2, characterized in that the closure wedge (1) - seen in cross-section - on opposite narrow sides Stabiliserungsnasen (8).
    [4]
    4. Wedge according to claim 1 or 2, characterized in that the closure wedge is a Statorkeil.
    [5]
    A wedge closure according to any one of claims 1 to 4, characterized in that the underside has at least one half wave-like depression bounded longitudinally in each case by flat regions.
    [6]
    A closure wedge according to any one of claims 1 to 4, characterized in that the underside has at least one recess which has rounded portions at its longitudinal ends and which is bounded in the longitudinal direction by flat areas.
    [7]
    7. A closure wedge according to claim 5 or 6, characterized in that the distance 12 between the recesses (10) is greater than the length 11 of the recesses (10).
    [8]
    8. Wedge according to one of the preceding claims, characterized in that on the underside of the closure wedge in the region of one of the longitudinal ends of a longitudinal groove extending for receiving a sensor, preferably temperature sensor is excluded.
    [9]
    A composite widening wedge comprising a wedge according to any one of the preceding claims, an insulating layer and a leveling layer, characterized in that the inserted wedge is potted together with the winding, the insulating layer and the leveling layer with a binder.
    [10]
    10. Composite system according to claim 9, characterized in that the insulating layer is formed from mica tapes.
    [11]
    A composite system according to claim 9 or 10, characterized in that the leveling layer is formed of felt.
    [12]
    12. Composite system according to claim 9, 10 or 11, characterized in that the binder is a resin.
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    同族专利:
    公开号 | 公开日
    WO2016075248A1|2016-05-19|
    EP3218995A1|2017-09-20|
    AT516479B1|2017-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE10357987A1|2002-12-19|2004-07-29|Aisin AW Co., Ltd., Anjo|Wedge for stator core|
    DE102005030877A1|2005-07-01|2007-01-04|Siemens Ag|slot closure|
    JP2011166859A|2010-02-05|2011-08-25|Hitachi Automotive Systems Ltd|Rotary electric machine|DE102016214029A1|2016-07-29|2018-02-01|Volkswagen Aktiengesellschaft|An electric motor which can be used as a driving machine of a motor vehicle|GB796222A|1954-06-09|1958-06-11|Papst Hermann|An electric rotary-field system|
    SE336619B|1968-12-23|1971-07-12|Asea Ab|
    JPS4883301U|1972-01-18|1973-10-11|
    JPS5378406U|1976-11-30|1978-06-29|
    JPS6051427A|1983-08-26|1985-03-22|Hitachi Ltd|Magnetic wedge of rotary electric machine|
    JP5971125B2|2013-01-09|2016-08-17|株式会社デンソー|Stator and rotating electric machine having the same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA820/2014A|AT516479B1|2014-11-12|2014-11-12|cover wedge|ATA820/2014A| AT516479B1|2014-11-12|2014-11-12|cover wedge|
    EP15804334.9A| EP3218995A1|2014-11-12|2015-11-12|Slot wedge|
    PCT/EP2015/076455| WO2016075248A1|2014-11-12|2015-11-12|Slot wedge|
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