• 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:
    To ensure a compact structure of a servomotor, at the same time avoiding excessive heat concentrations in the servomotor and the simple mounting of the servomotor is made possible, provided at the B-side end (B) of the servomotor (1) in the motor housing (2) has a first passive electrical Component (20) of the inverter of the motor supply of the servomotor (1) to be arranged, wherein a lead wire (14) for the first electrical component (20) from the motor housing (2) in the receiving cavity (10) is guided.
    公开号:AT512486A1
    申请号:T170/2012
    申请日:2012-02-09
    公开日:2013-08-15
    发明作者:
    申请人:Bernecker & Rainer Ind Elektronik Gmbh；
    IPC主号:
    专利说明:

    BN-3463 AT • «* * *« · · * ·
    servomotor
    The subject invention relates to a servomotor with a motor housing and a B-side end plate, which closes the motor housing and which is closed by a Endschilddeckel, wherein between the B-side end plate and Endschilddeckel a pick-up cavity arises in which a measuring device for detecting the rotor position or the rotor speed is arranged.
    The term servomotor is understood to mean an electric motor of any type, e.g. a DC motor, an asynchronous motor or a synchronous motor, the Momen- ten-, position or speed controlled in a closed loop is operated. For the control loop, a measuring device, e.g. in the form of a resolver, incremental encoder or an absolute encoder, for detecting the rotor position (rotation angle) or rotor speed required. Furthermore, such servomotors also require a corresponding motor supply for operation, e.g. an inverter. Servo motors with central motor supply, e.g. in a control cabinet, away from the servomotor. Servo motors are mainly used in industrial plants or machines, e.g. Machine tools, packaging machines, printing machines or industrial robots used. The aim is to make servo motors with decentralized motor supply with high power density as compact as possible. In order to realize this requirement, electrical components of the control and / or the motor supply are integrated into the servomotor.
    An example of this is described in DE 10 2004 025 812 A1, which shows an electric motor, on whose B side (the side of the motor facing away from the output) in a B flange, a motor state detection, such as a position sensor, and also a passive electrical component of the motor supply, in particular a DC link capacity of an inverter, an inductance, a line filter, etc., is arranged without increasing the outer contour of the electric motor. On the electric motor may further be arranged a converter. At the B-flange a recess for receiving a plug is provided in order to connect the electrical component of the motor supply to the inverter can. This results in a particularly compact design, in which the free space in the B-flange can be used effectively. The disadvantage here is that the various components and cables are very difficult to install due to the thus filled B-flange. Wiring in the housing are tedious and time-consuming due to the already limited space from the outset and the limited accessibility. In addition, the electrical components, in particular the power electronics, also have an enormous heat development, which must be dissipated by appropriate measures. Disadvantage -1- 4 *
    4 * BN-3463 AT | In this context, the fact that most passive electrical components have a significant temperature dependence, e. G. in the tolerance, life, etc., and the temperatures, especially in continuous operation, below which these components are operated, is limited. Thus, a concentration of electrical components in very limited space, e.g. in the B-flange, because of the difficult assembly and the heat concentration critical and problematic.
    US Pat. No. 6,177,740 B1 shows a servomotor in which components of the power electronics, in this case MOSFETs, are arranged between the motor housing and the housing in which the motor supply is accommodated. Thus, the heat generated by the components of the power electronics heat dissipated both from the motor housing, as well as the housing of the motor supply. In the housing of the motor supply further electrical components can be arranged, these components are arranged outside of the motor housing. A part of the motor housing is therefore not available for heat dissipation. In addition, by the housing of the motor supply, the outer dimensions of the servo motor, in particular the width of the motor, increased, which precludes a desired compact design as possible of the motor. The problem of ease of assembly is here by the arrangement of a number of printed circuit boards, each carrying different electrical components and solved by special connectors, but this increases the cost and cost of the servomotor due to the large number of components required.
    From DE 10 2004 010 687 A1 a servomotor is known in which a motor condition detection and an inverter are accommodated in a sensor cover fixed to the B side of the servomotor. The servomotors therefore house the small active electrical components, in particular the power transistors, of the inverter. Since this servomotor is supplied with a very low DC voltage (48V), this servomotor does not need any DC link capacitance or line reactor, or these passive electrical components would be so small at these voltages that they would fit comfortably on the motor driver board or in the sensor cover. The arrangement of such passive components in the electric motor and thus a compact design is thus very easy. In addition, such small electrical components generate even small amounts of heat that are easy to dissipate. In the motor housing an electromagnetic brake is additionally provided, which is controlled by a relay. For the purpose of the present application, passive electrical components are understood as meaning electrical components which have no amplifier effect or have no control function, such as in particular resistors, capacitors or inductors. On the other hand, active electrical components are electrical components that can be used in any
    • «« ·
    BN-3463 AT
    Form an amplifier effect of the useful signal show or allow control, in particular transistors or relays, etc.
    It is therefore the object of the subject invention to provide a servo motor, which is as compact as possible by integrating required for the motor power passive electrical components of the inverter in the servo motor and on the other hand avoids excessive, local heat concentrations through the passive electrical components in the servo motor and still easy to wire or to mount.
    This object is achieved in that at the B-side end of the servo motor in the motor housing, a first passive electrical component of the inverter of the motor supply of the servomotor, in particular a mains choke and / or a DC link capacitance is arranged, wherein a connecting wire for the first electrical component the motor housing is guided in the receiving cavity. By this arrangement, the assembly is greatly facilitated, since the first passive electrical component can be housed first in the motor housing, with the necessary connection wires remain accessible. Sufficient space remains in the receiving cavity to be able to subsequently wire the electrical components and the connecting wires arranged therein. It also prevents excessive local heat concentrations.
    The available space is advantageously utilized by a second passive electrical component of the inverter of the motor supply of the servomotor, in particular a mains choke and / or a DC link capacitance, is arranged in the receiving cavity. Thus, an even higher degree of integration is achieved, the mountability and wiring still being sufficient, i. that the electrical components are still sufficiently accessible.
    If an annular, concentrically arranged around a B-side mounting of the motor shaft power choke is provided as the first passive electrical component, a very compact design can be achieved and the component is easily accessible via the B side, which facilitates the assembly considerably.
    The subject invention will be explained below with reference to Figure 1, which shows by way of example and schematically an advantageous embodiment of the invention. It shows
    1 shows a cross section through a servo motor according to the invention in an advantageous embodiment. -3-
    BN-3463 AT
    1 shows a servo motor 1 with a motor housing 2, the output side by a first end plate 6 and on the output side A opposite side B (the B side) is completed by a second end plate 7. In the end plates 6, 7 a bearing for the motor shaft 5 is arranged in a known manner, which protrudes on the output side A from the servo motor 1. On the motor shaft 5, a rotor 4 and the motor housing 2, a stator 3 is arranged. The basic structure of an electric motor is well known, which is why it will not be discussed further here. B side, the end plate 7 is closed by a Endschilddeckel 9, so that between B-side end plate 7 and Endschilddeckel 9 a receiving cavity 10 is formed, which is provided for receiving a measuring device 8 for detecting the rotor position and the rotor speed. In addition, in the receiving cavity 10 may also be a passive electrical component 21 of the electric motor supply of the servomotor 1, such as e.g. a capacitor 11 of the converter intermediate circuit may be arranged. Particularly in the case of decentralized servomotors 1 with their own motor supply and with high power, e.g. from a few hundred watts, and therefore required high supply voltages, from e.g. Up to 900 VDC, such passive electrical components are very large, generate large amounts of heat and are therefore difficult to integrate into the servomotor 1. The measuring device 8 is e.g. a resolver, an incremental encoder or an absolute encoder and is of course connected in a suitable manner with the motor shaft 5. In the embodiment shown in Fig. 1, the B-side end plate 7 and the Endschilddeckei 9 are designed with an obliquely cut end face. Likewise, the facing end side of the end plate 7 and B-side Endschilddeckel 9 could be cut straight in a conventional manner. In the B-side end plate 7, as in Figure 1, or Endschilddeckel 9, a plug 12 may be arranged to connect the required electrical supply and control lines to the servo motor 1.
    In order to avoid excessive heat concentrations due to any arranged passive electrical components of the inverter of the motor supply in the receiving cavity 10 and to have sufficient space for easy wiring of the components in the servomotor 1, the invention provides, at least a first passive electrical component 20 of the inverter of the motor supply to arrange the B-side B of the servo motor 1 in the motor housing 2. In the exemplary embodiment according to FIG. 1, a mains choke 13, here in the form of an annular coil, is provided in the motor housing 2 as the first passive electrical component 20. The first passive electrical component 20 may be adapted to the cross-sectional shape of the motor housing 2 and therefore could also have a shape other than a circular ring, such as e.g. rectangular. In the receiving cavity 10 is here in addition to the measuring device 8 as a second passive electrical component 21, a Zwi- 4
    BN-3463 AT * * * * * * provided schenkreiskapazität 11, wherein the DC link capacitance 11 is arranged axially adjacent to the measuring device 8 and in Endschilddeckel 9.
    Preferably, a DC link capacitor 11 and / or a mains choke 13 in the motor housing 2 is arranged as the first passive electrical component 20. The power choke 13 is betermaßen for smoothing the effective current load on the necessary external supply leads to the servo motor 1 and the electronics and thus to reduce the effective value. In order to reduce the losses incurred on the leads to the servo motor 1, this is desirable as close to or arranged in the servo motor 1. Also, a mains choke 13 is, in particular in the desired performance and supply voltages of the servomotor 1, a very large, difficult in the servomotor 1 unterzu-bringing component.
    For wiring the first passive electrical components 20 in the motor housing 2, it is sufficient if the connection wires 14 for the first electrical component 20 led out of the motor housing 2 and guided into the receiving cavity 10, 15 which is easily possible in the course of mounting the servomotor 2 , The connecting wires 14 are then connected to the intended pins of the plug 12 or to other electrical components in the servomotor 1.
    Preferably, the first passive electrical component 20, here the line choke 13, in thermally conductive contact with the motor housing 2 and can be cast in a cup with special potting compound to achieve the necessary dielectric strength. Advantageously, the first passive electrical component 20 is arranged concentrically around the motor shaft 5 and in particular concentrically around the B-side bearing 15, e.g. here in the form of an annular net choke 13. This results in a very compact design and also the easy accessibility and mountability of the mains choke 13 is ensured 25. The heat generated by the mains choke 13 and by the DC link capacitance 11 is thereby distributed more evenly, whereby heat concentrations and locations with excessively high temperatures are avoided. -5-
    权利要求:
    Claims (3)
    [1]
    + + + + Ls «· · * * f * · · ·« + + · · · · · · · · · · · ············································································································· BN-3463 a B-side end plate (7), which closes the motor housing (2) and which is closed by a Endschilddeckel (9), 5 wherein between B-side end plate (7) and Endschilddeckel (9) a receiving cavity (10) is formed in a measuring device (8) for detecting the rotor position or the rotor speed is arranged, characterized in that at the B-side end (B) of the servo motor (1) in the motor housing (2) has a first passive electrical component (20) of the inverter of the motor supply the servo motor (1), in particular a mains choke io (13) and / or a DC link capacitance (11), wherein a connecting wire (14) for the first electrical component (20) from the motor housing (2) in the receiving cavity (10 ) is guided.
    [2]
    2. Servomotor according to claim 1, characterized in that in the receiving cavity (10) has a second passive electrical component (21) of the inverter of the motor supply 15 of the servomotor (1), in particular a mains choke (13) and / or a DC link capacitance (11), is arranged
    [3]
    3. Servomotor according to claim 1 or 2, characterized in that as the first passive electrical component is an annular, concentric about a B-side mounting (15) of the motor shaft (5) arranged mains choke (13) is provided. 20 -6-
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102010017514A1|2009-06-24|2011-01-13|DENSO CORPORATION, Kariya-shi|driving device|
    WO2011114554A1|2010-03-19|2011-09-22|三菱電機株式会社|Electric drive device and electric power steering device having same mounted therein|
    GB900852A|1958-08-05|1962-07-11|Hoover Ltd|Improvements relating to electric motors|
    DE3642727C2|1986-12-13|1992-11-19|Grundfos International A/S, Bjerringbro, Dk|
    US6177740B1|1999-01-29|2001-01-23|Delphi Technologies, Inc.|Integrated motor and motor drive unit|
    JP2004274834A|2003-03-06|2004-09-30|Tamagawa Seiki Co Ltd|Servo motor with built-in drive circuit|
    DE102004025812A1|2004-05-24|2005-12-22|Bosch Rexroth Aktiengesellschaft|Device for receiving peripheral drive components|
    WO2009075672A1|2007-12-10|2009-06-18|Otis Elevator Company|Integrated elevator machine motor and drive|
    DE102009015770A1|2009-03-31|2010-10-14|Hkr Climatec Gmbh|fan device|
    JP5624330B2|2009-06-24|2014-11-12|株式会社デンソー|motor|EP2999099A1|2014-08-07|2016-03-23|E.G.O. ELEKTRO-GERÄTEBAU GmbH|Electric drive system for a household appliance and household appliance|
    US10811932B2|2018-04-23|2020-10-20|Dura Operating, Llc|Rotary actuator with angled housing connection|
    法律状态:
    2018-03-15| HC| Change of the firm name or firm address|Owner name: B&R INDUSTRIAL AUTOMATION GMBH, AT Effective date: 20180205 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA170/2012A|AT512486B1|2012-02-09|2012-02-09|SERVOMOTOR|ATA170/2012A| AT512486B1|2012-02-09|2012-02-09|SERVOMOTOR|
    PCT/EP2013/052378| WO2013117619A2|2012-02-09|2013-02-07|Servomotor|
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