DE6915512U - CANNED MOTOR - Google Patents

Description

April 17, 1968

G. BauJcnecht, Society nit
limited liability
Electrotechnical factories

Stuttgart - S, Heidenklinge 22

A 30966 - see

Canned motor

The invention relates to a canned motor, in particular door driving a flanged pump having disposed between the rotor and stator of the motor, in the stator bore seated canned and on both sides of the rotor provided for bearings for the Lauferweklle, one of which on the side remote from the drive side of the motor side of the rotor provided radial bearing protrudes into the closed performed on this end face canned iroibei ₃ on the front side of the can a VerschluSglied is supported by the open access to the ISuferweilenende releases.

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In a known canned motor of this type, a sleeve-shaped head piece is fastened by welding to the end wall of the can, which, like the sleeve-shaped »radial rod arranged in the head piece bore, protrudes into the can and which at its outer end has an external thread xm for a cap. This training requires a large amount of space and is complicated in structure, so that it is difficult to manufacture and assemble

Head piece, which carries the radial bearing, from »also ι

• η be supported on the motor housing, this Ab- |

I Support through the design described with an axial 1

Distance from the can is provided so that an I.

1 • additional · space requirement results. |

U * a canned motor is also known in which j

• Adial bearing for the rotor shaft only on one side of the Hufers are provided and the rotor shaft on the opposite side of the rotor not at all is gugänglih. However, such accessibility is necessary to overcome a blockage of the rotor shaft as well to observe the direction of rotation is desirable.

_ _ · Ι O 1

It · t I

-en The invention is based on the task of a / gap pipe - to train motor of the type described in such a way that a simple and space-saving arrangement of the closure member is possible.

In the case of an iron canned motor, in particular for the drive of a flange-mounted pump with a can arranged between the rotor and the stator of the motor, seated in the stator bore and bearings for the rotor shaft ₉ provided on both sides of the rotor, of which the one on the side of the rotor facing away from the output side of the motor provided radial displacement protrudes into the can, which is closed on this end face, with a closing element mounted on the end face of the can, which after opening gives access to the rotor shaft end, according to the invention the radial bearing with the rotor shaft end mounted in it is provided completely within the can. As a result, s ± h results in a space-saving arrangement, and in addition the closure member, which is preferably provided on the same axis as the rotor shaft, can be arranged so as to protrude into the can.

According to a further feature of the invention, the closure member is with an external thread in one of the

End wall of the can provided internal thread out so that the diameter of the fastening arrangement can be chosen to be very small for the closure member.

In a preferred embodiment of the subject matter of the invention, the internal thread is through a on the end wall of the can attached threaded part, preferably a Schlagnsitter formed, which is easy and without damage of the SpaltreOhres and can be attached absolutely tight. This is especially the pail when the hammer nut jolt a profiled ring collar into the front wall of the Can, preferably in the inside of this StiAand is positively pressed. A circumferential groove is expediently provided adjacent to the profiled annular collar on the lock nut, into which the end wall up to the form-fitting Engagement is pressed in, so that the lock nut is axially secured in a simple manner. Are the profilings formed by prongs, the surfaces of which are inclined towards the central axis of the lock nut in the push-in direction run away from this axis, when the lock nut is hammered in, the end wall is automatically pressed into the circumferential groove and, in addition, a form-fitting connection in the circumferential direction of the lock nut with the can achieved.

In a further embodiment of the invention, the closure member is by means of a screw, for example a cylinder head very hood with a head that is preferably larger in diameter than the threaded part, which leads to the secure seal between the screw head and the End wall of the can at least one sealing ring can be provided in a simple manner. Hit the locking link A viewing panel with a larger diameter and provided on the outside of the end wall can also be used, preferably be attached between two sealing rings.

A particularly advantageous development of the ^

object is that the face of the Rotor shaft end directly opposite end face, preferably formed by the threaded part Type of axial bearing is intended as a sliding surface for the rotor shaft end. This means that after the Motor when the rotor body runs down, in which the pump directed towards and caused by it, on the rotor shaft acting tensile force decreases, strike the rotor shaft on this sliding surface, so that a further migration of the rotor shaft is avoided without damage due to high sliding friction are feared. The radial bearing is useful with

I t ι
I t I
II tt (

ί i t 1

See the axial distance from the end wall of the can so that the end of the shaft is slightly zuglngljm.

In the case of the erfindungsgeatässen training, he can do that too YerschlußgUed having end section of the can be provided freely protruding and thus easily accessible.

To simplify the structure of the invention Canned motor, the end face is in one piece with the can, which is preferably formed by a deep-drawn part educated.

A further reduction in the space requirement of the inventive Spaitrohremotors can be achieved aäourcn that the end of the can receiving the sliding bearing

re a diameter smaller than the rotor diameter having. As a result, the circumference of the radial bearing can also be directly on the inner surface of the can be provided adjacent, without a particularly large wall thickness of the radial bearing is required.

For secure support of the radial bearing, the can lies in the area of this bearing with the circumference

«* ♦ 4

in the bore of a bearing flange of the motor housing to, said bearing flange is preferably integrally formed with the riötörgcnäüSc _g, so that therefore *

additional parts to support the radial bearing are not required. In addition, the window can lie in a recess of the bearing flange to save space. Since the radial bearing according to the invention is completely inside of the can is, the bearing flange can protrude in the direction of the rotor into the housing, so that the Bearing flange not at all to the outside over the motor housing protrudes.

The invention is explained in more detail below with further details; the drawings show an exemplary embodiment with the parts essential to the invention almost to scale again. These parts will as far as they are not easily recognizable from the drawings, explained on the basis of the drawings. There are shown in

1 shows a canned motor 3m according to the invention Axlals cut,

Pig. 2 the canned motor according to Pig. 1 Ib view from the right,

Il ff *

FIg, 3 the canned motor according to FIG. 1: ln View from the left,

Pig · Ά a section of the Pig. 1 in an enlarged view.

As shown in Pig 1 to 4, a canned motor according to the invention has a motor housing 1, in the longitudinal axis of which "is gap" ob? This is because the housing chamber 4, which is formed thereby and accommodates the stator 3, is completely sealed against liquid · In the axis of the can 23 , a shaft 5 is provided in this on which the rotor or rotor 6 is arranged * Die ¥ elle 5 is mounted on both sides of the rotor β each with a radial bearing 7 or 8 on the motor housing 1. One end 9 of the ¥ elle 5 is guided out of the motor housing 1 and is intended, for example, to drive a pump to be flange-mounted on the motor housing 1. At the despatched from this side end of the motor housing 1 is provided with an end wall 10 forming ausragendsn in its inner region a fcülsenfSrmigen, ± n JRiditsmg to! Ü rotor 5 bearing flange whose smaller Jnnenäurchiaesser

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than the outer diameter of the can 2 in the area of the rotor 6 1st.

The can ? has a smaller diameter in the area 12 of the radial bearing 8 than in the area of the rotor 6, the radial bearing 8 being provided in the area of this tapered Sjlaltrohrendabschnlttes 12. Furthermore, the radial bearing 8 is provided in the area of the bearing flange 11, which closely surrounds the end section 12 of the can 2, so that both the can and the radial bearing 8 are supported in this area.

¥ ± e FIg * 1 itself ₃ lies the radial bearing; 8 completely within the can 2 as well as the end 13 of the rotor shaft 5, which is supported in this bearing 8.

On the front string adjacent to the LSuferwellenende 13 Is the "for example by; a T'lefzleiitell formed Can 2 with an integrally formed with him Front wall $ 1 closed off at a distance from your opposite end of 5an1 al camp 8 at elnasa » free above the bearing flange. 11 protruding section

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-lodes can 2 is provided.

In the axis of the rotor shaft 5 is in the end wall Ik
according to FIG. h a circular opening 16 is provided,
in which a lock nut 17 is used. The lock nut 17 has one on the inside of the end wall
Ik adjoining annular disk-shaped collar 18, the
on its end face facing the end wall 1 * 1 with
Jags 19 distributed uniformly over the circumference are provided, the ones of which lie towards the central axis of the lock nut 17
Inner surfaces run obliquely to this axis * Afterwards
& n the collar 18 the lock nut 17 has a circumferential groove 21

on,. The impact nut 17 is with the collar 18 of the I.

Inside of the front wall ± M applied to this, -which |

by axially compressing the end wall 1Ά and the impact hammer 17, the prongs 19 penetrate into the end wall 1 * 1 |

and due to the inclined surfaces 20 the wheel end zone d & 3 \

Breakthrough 16 is pressed into the circumferential groove 21. Thereby j becomes a density, both in the circumferential direction and in j

Axial direction positive connection between the <

Impact nut 17 fcnd of the front wall Ik in a simple manner I

achieved. The lock nut 17 is only about the inside of the end wall Ik and not about its | Outside in front, with between the end face 22 of the

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Rofcorwellenendes I3 and the annular end face 23 of the lock nut 17 a small distance is provided. The end faces 22, 23 are selected with regard to the material and their surface properties so that they can slide against one another like an axial bearing ^ ~ g & T3i oils Bofcorseüe 5 according to Pig * 1 moves to the right.

In daaSureSagehende internal thread 2Ά of the lock nut 17, a screw with its threaded section 2: 6 is screwed from the outside as a closure member 25, the head 27 of the screw 25 having a larger outside diameter than the threaded part 26, so that between its annular end face and the outside of the End wall I ¹ I of the can 2 ring seals 28 can be arranged around the threaded section 26. Provided between the two ring seals 28 is a plane window 29 which is larger in diameter than the latter and lies in a recess 30 in the end wall 10 or in the bearing flange 11 of the motor housing 1.

After unscrewing the screw 25, which does not have the Motor housing 1 protrudes, this is a transverse slot 31

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having rotor shaft end 13 accessible through the lock nut. If the screw 25 according to Fig. 1 mounted in the impact nut 17, so it is inwardly do not have the impact nut 17 before, the fact that thus the impact nut 17 exte an axial stop for the Läuferwellen- I is 13, is not, as in known Can

j! motors, between the radial bearing 8 and the rotor 6

\ a spacer sleeve is required. Through the closed

I Execution of the can 2 in the area of the bearing δ

j is a sealing of this end of the can 2 as

£ not required at the other end of the can. However, the bearing flange 11 can also function as separate, si the engine

i housing 1 to be fastened part.

I Zweckmäs3ig are the screw 25 and the nut 17 impact

■ j galvanically bark with a coating in order to. a corroding

I avoid it.

Claims (1)

Expectations 1. Canned motor, especially for driving a Flanged pump with a pump located between the rotor and the stator of the motor and seated in the stator bore Canned can and bearings provided on both sides of the rotor for the run, the tone of the one of the The side of the rotor facing away from the output side of the motor 'provided radial bearings are closed on this end face Executed can protrudes, with a closure member being mounted on the end face of the chip tube, which after opening releases an access to the rotor shaft shaft, characterized in that the axial bearing (8) with the in it stored LSuferwelleende (13) is provided completely within the can (2). 2. Canned motor according to claim i, characterized in that that this is preferably provided on the same axis as the Lauferw & lle (5) Closing member (25) protrudes into the can (2) ./ 3 canned motor according to claim 1 or 2, characterized in that that the closure member (25) with an external thread (26) in one on the end wall (14) of the can (2) provided internal thread (24) guided 1st. RQ15519 E - 2 - ¹ U Spaltrobi ^ otor according to claim 3 _a, characterized in that the internal thread ί2Ά} is formed by a threaded part attached to the end wall (I ² I) of the can (2), preferably a lock nut (17). 5. canned motor according to claim Ά _9, characterized in that the threaded part (17) Äusscfcüessllch protrudes over the inside of the end wall (I ¹ I) of the can (2). / 6. canned motor according to claim ^ J or 5> characterized in that the lock nut (17) is profiled with a Ring collar (l8) in the end wall (IiJ) of the can (2), preferably in the inside of this end wall (1 * 0 is positively pressed. / 7. canned motor according to claim 6, characterized in that adjacent to the profiled annular collar (18) in the Schlagmu'cter (17) a circumferential groove (21) is provided, into which the front wall (I ¹ J) is pressed until it engages positively. ι t t it ir fit C ti 1 - I I eil ι t «t I < I β I I III t C (Il t Cl I Il It 8. canned motor according to claim 6 or 7, characterized in that the profilings by Zakcken (19) are formed, whose surfaces (20) lying towards the central axis of the lock nut are inclined in the push-in direction from run away from this axis. ^ $. Canned motor according to one of the preceding claims, characterized in that the closure member is provided by a screw (25), for example a cylinder head screw head (27) with a larger diameter is formed 1st. _/ 10_ Spaltrqhrmotor according to claim 9, characterized in that that between the screw head (27) and the end wall (IS) of the can (2) at least one sealing ring (28) is provided. 11. Canned motor according to one of the preceding claims, characterized in that with the closure member (25) a larger diameter, on the outside of the end wall (IM) provided screen (29), preferably between two sealing rings (28) is attached., 15512 4 * * Ϊ4Μ 12. Spaltrohirootor according to one of the preceding claims, characterized in that the one directly opposite the end face (22) of the rotor shaft end (13), Preferably, the end face formed by the thread part (17) (23) is provided in the manner of an axial bearing as a sliding surface for the rotor shaft end (13) 13. Canned motor according to one of the preceding claims, characterized in that the radial bearing (8) is axially spaced from the end wall (1 * J) of the spa tube (2) provided ί, -τ. Canned motor according to one of the preceding characterized in that the end section (15) of the can (2) having the closure member (25) is free is intended to be outstanding / 15 «canned motor according to one of the preceding claims, characterized in that the end wall (14) is in one piece is formed with the can (2), which is preferably formed by a deep-drawn part .; -5 - l6 «canned motor according to one of the preceding claims, characterized in that the sliding bearing (8 receiving end The end (12) of the can has a smaller diameter than the rotor diameter. 17 «canned motor according to one of the preceding claims, characterized in that the can (2) rests in the region (12) of the slide bearing (8) with the circumference in the bore of a bearing flange (11), preferably one-piece with the motor housing (1) . J 18. Canned motor according to claim 17, characterized in that ääS äie viewing screen (29) in a recess (30) of the Bearing flange (11) lies. IS "canned motor according to claim _s 17 or 18 characterized in that the bearing flange (11) projecting towards the runner (6) In the case (i). ,