Abstract:
A series of fabricated products for electrically rotatably driven machines, especially alternating current motors for attachment on drives, for alternating current motors having various pole configurations and operable in differing performance classes, voltage classes, and frequency classes, includes a plurality of trunk motors each having a motor housing, a motor terminal box for the provision of electrical current to stator windings mounted in a rotationally symmetrical manner in the motor housing, and a rotor. The rotor has a shaft supported on a bearing bracket. The trunk motor also includes a drive side, a non-drive side, and a shaft end extending outwardly from the non-drive side adapted for the securement thereto of a plurality of differing attachment shafts.

Description:
BACKGROUND OF THE INVENTION 
   The present invention relates to a series of motors, especially a series of motors for attachment on drives, for alternating current motors having different pole configurations, and operable in different performance classes, voltage classes, and frequency classes. 
   In connection with a series of motors, in the interest of producing a cost favorable assembly and an economical motor supply inventory, one has particularly endeavored to configure the various motors of a series of motors with the greatest possible number of differing attachments and accessories within the purview of a common configuration, in order to maintain a large number of motor variations which, from the point of view of their individual functions and operations, are widely different from one another. 
   It has heretofore been necessary to produce the complete motor variations, or a multitude of the different principal motor components such as, for example, stators, terminal boxes, rotors or armatures, bearing brackets, and so forth, as individually configured assemblies with required corresponding functions and operational configurations and to maintain inventories of such individually configured assemblies in an uneconomical manner. 
   SUMMARY OF THE INVENTION 
   The present invention offers a solution to the challenge of providing a series of motors for alternating current motors having different pole configurations, operable in different performance classes, voltage classes, and frequency classes, and offering a very large variety of typical motor specifications or accessory functions which fulfill, in considerable measure, the requirements for a cost-favorable assembly and economical supply inventory storage thereof without limiting the performance range and the function range and or limiting the required deployment venues of the motors. 
   In accordance with the inventive series of motors, it is possible, in dependence upon the required number of poles and the required performance classes, voltage classes, and frequency classes of the respective motor, to assemble in a simple manner the necessary attachment pieces and accessory pieces—that is, the ventilators, brake apparatus, transmitters, and reversal stops as well as the second motor shaft ends, or combinations of these various attachment pieces and accessory pieces, into a trunk motor in order to assemble together in this manner the required complete motor variant. In this connection, there is thereby made available a range of variations having a base module “trunk motor” among the motor assembly offerings or, generally, among the offerings of electrically rotatably driven machines, which have heretofore not been available in this form. 
   Further advantages in connection with the assembly costs and the economical supply inventory storage permit, in particular, the realization of configurations in which the deployed attachment pieces and accessory pieces, which are respectively exchangeable, need be manufactured only on the first pass and then held in inventory. As the occasion arises, the attachment pieces and accessory pieces are exchangeable among differing motor sizes and dimensions. In this connection, the attachment pieces and accessory pieces can even be produced for assembly into any one of a range of motor sizes. Due to the reason of the relatively lower inventory of attachment pieces and accessory pieces, the costs for the assembly as well as for the storage of supply inventory can be strongly reduced to an economically advantageous order of magnitude. 
   In connection with a further integration of the necessary assembly components, the bearing bracket comprises, on the non-drive side (the NS-side) of the motor or, as this side is alternatively designated, the so-called ventilation side (the BS-side) of the motor, a unitary configuration corresponding to the respective motor size which is, in fact, independent of the various performance classes, the number of poles specified as a function of the rate of rotation, and the variously selectable functions and operational configuration of the motor. In this manner, cost favorable production and economic supply inventory storage are achieved such that the various motors of a given motor configuration size can be assembled with the greatest possible number of similar attachment pieces and accessory pieces in accordance with the principle of unit construction. 
   Further advantages of the invention are set forth in the hereinafter following descriptions of various embodiments of the invention. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a front elevational sectional view of one embodiment of the inventive trunk motor for assembling with various attachment pieces and accessory pieces; 
       FIG. 2  is a front elevational sectional view of one variation of the inventive motor with an attachment piece in the form of a standard fan in accordance with the present invention; 
       FIG. 3  is a front elevational sectional view of another variation of the inventive motor having the attachment piece of an external ventilator in accordance with the present invention; 
       FIG. 4  is a front elevational sectional view of an additional variation of the inventive motor with the attachment pieces of a brake device and a standard fan in accordance with the present invention; 
       FIG. 4.1  is a front elevational view of an attachment shaft for the motor variation shown in  FIG. 4 ; 
       FIG. 5  is a front elevational sectional view of a further variation of the inventive motor having the attachment pieces of a brake device and an external ventilator in accordance with the present invention; 
       FIG. 6  is a front elevational sectional view of a further additional variation of the inventive motor with the attachment pieces of a reversal stop and standard fan in accordance with the present invention; 
       FIG. 6.1  is a front elevational view of an attachment shaft for the motor variation shown in  FIG. 6  configured in the manner of the attachment shaft shown in  FIG. 4.1 ; 
       FIG. 7  is a front elevational sectional view of a supplemental variation of the inventive motor with the attachment pieces of a brake device, standard fan, and transmitter in accordance with the present invention; 
       FIG. 7.1  is a front elevational view of an attachment shaft of the variation of the motor shown in  FIG. 7 ; 
       FIG. 8  is a front elevational sectional view of an additional supplemental variation of the inventive motor with the attachment pieces of a brake device, a transmitter, and an external ventilator in accordance with the present invention; 
       FIG. 8.1  is a front elevational view of an attachment shaft for the motor variation shown in  FIG. 8 ; 
       FIG. 9  is a front elevational sectional view of a further supplemental variation of the inventive motor with the attachment pieces of a brake device, a standard fan, and a second shaft end in accordance with the present invention; 
       FIG. 9.1  is a front elevational view of an attachment shaft for the motor variation shown in  FIG. 9 ; 
       FIG. 10  is a front elevational sectional view of yet another variation of the inventive motor with the attachment pieces of a standard fan and a transmitter in accordance with the present invention; 
       FIG. 10.1  is a front elevational view of an attachment shaft for the motor variation shown in  FIG. 10 ; 
       FIG. 11  is a front elevational sectional view of still another variation of the inventive motor with the attachment pieces of a transmitter and an external ventilator in accordance with the present invention; 
       FIG. 11.1  is a front elevational view of an attachment shaft for the motor variation shown in  FIG. 11 , configured in correspondence with the attachment shaft shown in  FIG. 10.1 ; 
       FIG. 12  is a front elevational sectional view of an additional further variation of the inventive motor with the attachment pieces of a standard fan and a second shaft end in accordance with the present invention; and 
       FIG. 12.1  is a front elevational view of an attachment shaft for the motor variation shown in FIG.  12 . 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 1  shows one embodiment of the trunk motor of the present invention, hereinafter designated as the trunk motor  1 , and comprising a motor housing  2 , preferably formed of die cast aluminum in a form-stable construction and having ribs  3  for top surface cooling of the trunk motor  1 . The trunk motor  1  comprises, on one side thereof—namely, the drive side or AS-side thereof—a bearing bracket  5 . 1  and a drive or power transmission interface  4 , which is especially configured for a direct take-off drive attachment, and, on the other side thereof—namely, the non-drive side (NS-side or BS-side), a unitary bearing bracket  5 . 2 . The rotor or armature of the trunk motor  1  is disposed in the bearing brackets  5 . 1  and  5 . 2 , the rotor or armature comprising, on the so-called non-drive BS-side, a unitary shaft end  6  operable for the securement thereto of various attachment shafts. The shaft end  6  is configured for the various attachment shafts in that, on the shaft end  6 , there is formed an attachment configuration such as, for example, a smooth bore or a threaded configuration or the like operable for securing a force locking or form locking attachment shaft. The top surface of the shaft end  6  is configured such that the attachment pieces can be secured thereto without mechanical working. 
   As can be further seen in  FIG. 1 , securement bolts  7 , preferably in the configuration of multi-turn bolts, are provided for securing a not-illustrated ventilation hood which is preferably mounted via a bayonet securement. In this connection, the multi-turn bolts are preferably pre-assembled in the bearing bracket  5 . 2  of the trunk motor  1 . 
   It can be further seen in  FIG. 1  that the trunk motor also comprises a terminal box  8  which is shown in partial sectional view. The terminal box  8  is of a configuration such that the introduction thereinto of a cable for, as well, the electrical connections to the attachment pieces, can be performed without further mechanical working. Moreover, the terminal box  8  can turn through respective 90° angles around the attachment surfaces without it being necessary that the introduction of the cables requires a mechanical working. In this connection, a terminal board  9  which is, preferably, configured as a six-pole terminal board, and a complete protective conductor connector are provided, as well as securement possibilities for connection elements comprised of individual pieces such as, for example, a rectifier, a capacitor, or other similar attachment pieces and accessory pieces. Additionally, several securement devices for the rating plate are provided on the top surface of the trunk motor  1 . In this connection, a rating plate  10  is illustrated. 
     FIG. 2  illustrates solely the unitary bearing bracket  5 . 2  and the shaft end  6  of the trunk motor  1  with a standard fan  11  preferably comprised of glass-reinforced synthetic material or plastic which provides organic or self ventilation to the trunk motor. The standard fan  11  is connected via rabbeting to the shaft end  6  of the trunk motor  1 . Moreover, a first hood  12  is illustrated which is mounted on the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 3  illustrates a variation of the inventive motor with the attachment piece of an external ventilator  13  with a terminal box  13 . 1 . The external ventilator  13  is disposed on the inner side of a second hood  14  which is oppositely disposed to the shaft end  6  of the trunk motor  1 . In this connection, the terminal box  13 . 1  of the external ventilator  13  is preferably provided with a capacitor so that the motor of the external ventilator can be selectively driven with three phase current or single phase alternating current. 
   The external ventilator  13  is preferably deployed if the motor cannot be sufficiently ventilated by a standard fan such as is the case, for example, in connection with relatively long continuous running time, operation as a rectifier inverter, and so forth, or if the configuration does not permit a standard fan capability. The ventilation hood  14  encloses the shaft end  6  and the external ventilator  13  and is likewise mounted on the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 4  illustrates another variation of the inventive motor, whereby there are provided as attachment pieces a brake device  15  which is, for example, an electromechanical brake or the like, and the standard fan  11  for self-ventilation, mounted on a first attachment shaft  16 , as shown in  FIG. 4.1 . The standard fan  11  is secured to the attachment shaft  16  preferably via a force locking connection by means of tolerance collars. The attachment shaft  16  is connected with a not-illustrated shaft end  6  of the trunk motor  1  preferably via a press-fit/adhesive connection. The rotor of the brake device is preferably secured via a rabbeting connection to the shaft end  6  of the trunk motor  1 . In this connection, the housing of the brake device  15  is connected via bolts to the unitary bearing bracket  5 . 2  and, in fact, preferably via self-tapping bolts which are received in bores provided in the bearing bracket  5 . 2 . The brake device  15  can be selectively ventilated with an indicated hand-operated release lever  17  which projects out of a slot  18 . 2  provided in a third hood  18 . 1 . The third hood  18 . 1 , which is configured with the slot  18 . 2 , encloses the brake device  15  and the standard fan  11  in a protective manner and is likewise secured on the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
   Drive motors are selectively configured with an electro-mechanical brake device  15  assembled on the non-drive side (BS-side). Preferably, a spring-biased disc brake is deployed, whereby, with help of the hand-operated release lever  17 , a manual ventilation of the motor is possible following, for example, a cessation of the current or in connection with positioning work, in lieu of the otherwise normally deployed ventilation effected in an electromagnetic manner. Alternatively, other brake devices can be assembled therein such as, for example, operating current-actuated brake devices. 
     FIG. 5  shows a variation of the inventive motor with the attachment pieces of an electro-mechanical brake device  15 , which is mounted on the not-illustrated shaft end  6  of the trunk motor  1  via a rabbeting connection, and an external ventilator  13  with a terminal box  13 . 1 . In this connection, the external ventilator  13  is further arranged on the inner side of a fourth hood  19  in axial adjacent disposition to the brake device  15 . The ventilation hood  19  encloses the brake device  15  and the external ventilator  13  in protective manner and is likewise connected to the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 6  illustrates a variation of the inventive motor with the attachment pieces of a reversal stop  20  and the standard fan  11 . Motors having the mechanical reversal stops are deployed if a reverse direction operation of, in particular, the de-activated drive, should be prevented. In the illustrated variation, the reversal stops  20  and the standard fan  11  are arranged on a first drive shaft  16 , shown in  FIG. 6.1 , which corresponds to the drive shaft illustrated in  FIG. 4.1  and which is connected with the non-illustrated shaft end  6  of the trunk motor  1 . The attachment pieces are furthermore protected by a third hood  18  which is mounted on the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 7  illustrates another variation of the inventive motor. In this variation, the attachment pieces of the brake device  15  and the standard fan  11  as well as an attachment piece in the form of a transmitter  21  having a transmitter protection hood  21 . 1  are arranged in serial manner one behind another on a second attachment shaft  22 , which is illustrated in  FIG. 7.1 . In this connection, a shaft end  22 . 1  of the second attachment shaft  22  with the transmitter device  21  disposed thereon projects out of a bore  18 . 4  of a third hood  18 . 3 , which encloses the attachment pieces of the brake device  15  and the standard fan  11  and is mounted on the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. The transmitter housing  21 . 2  of the transmitter  21  is assembled via a first torque support  26  in a rotation-blocked manner to the third hood  18 . 3 . The transmitter  21  is disposed in a protected manner under the transmitter protection hood  21 . 1  which, itself, is secured on the ventilation hood  18 . 3 . 
   The transmitter  21  can be configured, for example, as an absolute value transmitter, an incremental transmitter, a tachometer, a proximity switch having inductive, capacitative, optical, or other capability, a centrifugal force switch, and the like. The shaft end  22 . 1  of the second attachment shaft  22  is always so configured such that the range of a series of motors which are produced can always use the same transmitter  21 . The rotor of the transmitter  21  is preferably secured via clamping rings to the shaft end  22 . 1  of the second attachment shaft  22 . The securement of the transmitter protection hood  21 . 1  is configured such that this hood can be deployed for several different sizes of motors. 
     FIG. 8  illustrates another variation of the inventive motor having the attachment pieces of the brake device  15  and the transmitter  21  as well as the external ventilator  13  with the terminal box  13 . 1 . In this variation, the brake device  15  and the transmitter  21  are disposed on a third attachment shaft  23 , as is illustrated in  FIG. 8.1 , which is, in turn, connected with the not-illustrated shaft end  6  of the trunk motor  1 , whereby the transmitter  21  is mounted on a shaft end  23 . 1  of the third attachment shaft  23 . 
   In this configuration, the transmitter  21  is secured via a second torque support  27  in a rotation-blocked manner onto the bearing bracket  5 . 2  of the trunk motor  1 . The external ventilator  13  is mounted, as viewed in the axial direction, on the inner side of a fifth hood  24  which is disposed in opposition to the transmitter  21 . The fifth hood  24  encloses the brake device  15 , the transmitter  21 , and the external ventilator  13  and is, likewise, mounted to the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 9  illustrates another variation of the inventive motor, whereby the brake device  15  and the standard fan  11  for self-ventilation of a fourth attachment shaft  25 , which is illustrated in  FIG. 9.1 , are provided as attachment pieces. The fourth attachment shaft  25  is connected with the shaft end  6  of the trunk motor  1  preferably via a press fit/adhesive connection. In this connection, a shaft end  25 . 1  of the fourth attachment shaft  25  or, alternatively as well, a so-called second motor shaft end, projects through another bore  18 . 5  of a third hood  18 . 3 . The ventilation hood  18 . 3  encloses the brake device  15  and the standard fan  11  and is likewise secured to the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. The shaft end  25 . 1  of the fourth attachment shaft  25  provides for the mounting thereon of selected accessory pieces such as, for example, a hand wheel or crank lever or so forth which permit a manual positioning or which permit customer attachment of a rotation monitoring device or, additionally, which permit the take-off driving of assistance assemblies such as, for example, a cooling medium pump. 
     FIG. 10  illustrates another variation of the inventive motor having the attachment pieces of the transmitter  21  and the standard fan  11 , whereby the standard fan  11  is mounted on the shaft end  6  of the trunk motor  1 . A fifth attachment shaft  28 , which is illustrated in  FIG. 10.1 , is secured to the shaft end  6  of the trunk motor  1  preferably via a press fit/adhesive connection. The fifth attachment shaft  28  comprises a shaft end  28 . 1  on which the transmitter  21  is mounted. The housing  21 . 2  of the transmitter  21  is secured via a first torque support  26  in a rotation-blocked manner to a first hood  12 . 1  which is provided with a bore  12 . 2 . The transmitter  21  is protectively enclosed underneath the transmitter protection hood  21 . 1  which, itself, is mounted on the ventilation hood  12 . 1 . The ventilation hood  12 . 1  is provided with the bore  12 . 2  for the passage therethrough of the fifth attachment shaft  28 . The ventilation hood  12 . 1  protects the standard fan  11  and is likewise secured to the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 11  shows a variation of the inventive motor having the transmitter  21  as well as the external ventilator  13  with the terminal box  13 . 1  as attachment pieces. In this variation, the transmitter  21  is mounted on the fifth attachment shaft  28 , which is illustrated in  FIG. 11.1  and is a shaft configured in correspondence with the shaft illustrated in  FIG. 10.1 , and the transmitter  21  is further connected with the shaft end  6  of the trunk motor  1  via, preferably, a press fit/adhesive connection, whereby the transmitter  21  is mounted on the shaft end  28 . 1  of the fifth attachment shaft  28 . In this variation, the transmitter  21  is mounted by means of the second torque support  27  in a rotation-blocked manner on the bearing bracket  5 . 2  of the trunk motor  1 . The external ventilator  13  is, as viewed in the axial direction, mounted on the inner side of the fifth hood  24  which is in opposition to the transmitter  21 . The ventilation hood  24  is likewise mounted on the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. 
     FIG. 12  illustrates another variation of the inventive motor, whereby an attachment piece in the form of the standard fan  11  for self-ventilation is mounted on a sixth attachment shaft  29 , which is illustrated in  FIG. 12.1 . The sixth attachment shaft  29  is secured to the shaft end  6  of the trunk motor  1  preferably via a press fit/adhesive connection. In this connection, a shaft end  29 . 1  of the sixth attachment shaft  29  projects through a bore  12 . 2  of a first hood  12 . 1  which encloses the standard fan  11  in a protective manner and is likewise secured through the securement bolts  7  of the bearing bracket  5 . 2  of the trunk motor  1  via a bayonet securement. The shaft end  29 . 1  serves as a so-called second motor shaft end for the attachment thereto of selected accessory pieces such as, for example, a hand wheel or crank lever or so forth which permit a manual positioning or which permit customer attachment of a rotation monitoring device or, additionally, which permit the take-off driving of assistance assemblies such as, for example, a cooling medium pump. 
   The above-described variations of the inventive motor relate to a series of motors but such variations are also deployable, in obvious manner, in general for series of electrically rotatably driven machines such as, for example, generators. 
   The specification incorporates by reference the disclosure of German priority document DE 102 38 336.7 filed Aug. 16, 2002. 
   The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.