DE20318344U1 - Electric motor housing has housing and flange elements that can be arranged in series in any numbers with adjacent housing elements rotated by 90 degrees relative to each other - Google Patents

Abstract

The housing has one or more identical housing elements (12) that can be connected together in series and that can be terminated and/or joined together by flange elements and at least four bores (18) for attachment arrangements defining a rectangle with different length sides (a, b). Housing and flange elements can be arranged in series in any numbers and the adjacent housing elements are rotated by 90 degrees relative to each other.

Description

Field of the Invention

The Invention relates to a motor housing for one Electric motor and / or its additional parts.

State of the art

electric motors are usually enclosed in a motor housing that contains the motor components from environmental influences and protects touch. electric motors can as internal rotor motors or external rotor motors be configured. Internal rotor motors e.g. include a shaft, a rotor assembly, the one or more comprises permanent magnets arranged on the shaft, and a stator assembly, some e.g. comprises stator bodies constructed from sheet metal and phase windings. Two bearings are arranged on the shaft at an axial distance to support the rotor assembly relative to the stator assembly. The Bearings stand with the motor housing in a non-rotatable connection. The motor housing can be attached to at least one Front end to be closed by a motor flange, which is preferred carries the fixed parts of the engine.

The known motor housing have the disadvantage that they are individual for each engine type for example are manufactured as deep-drawn parts or turned parts and no flexible, Allow modular design. In addition, the connection between the housing and the motor flange in an unsatisfactory manner by means of several the housing penetrating screws loosened.

The EP 0 103 979 A1 discloses housing elements for an electric motor, four bores each being provided, and the fastening screws being passed through the entire housing arrangement ( 3 ). There are no flange elements provided between the individual housing elements.

The US 6,359,355 B1 shows an electric motor with a modular housing, which has four holes for connection to flange elements. Here, too, the screws are passed through the entire length of the housing arrangement.

Both above writings disclose housing elements that are in cross-section are square. Use of non-square housing elements is not scheduled.

Disclosure of the invention

The The object of the invention is to provide a modular, stackable motor housing to create that allows easy assembly and inexpensive to manufacture is.

This The object is achieved by the Features of the protection claim 1 solved.

preferred Refinements and further features of the invention result from the dependent Protection claims.

According to the invention Motor housing suggested that from one or more stringable and by flange elements closable at the front and / or interconnectable housing elements of the same type consists.

On this way the housing and flange elements can be assembled in a modular manner to form a motor housing.

In a preferred embodiment of the invention are the housing elements made from an extruded profile. Extruded profiles in any diameters.

Preferably is every housing element essentially tubular trained and has two on its outer surface axially extending thickenings. The thickenings cover the front Holes for the introduction of fasteners for fastening of the flange elements. On the other hand, they can be used for mechanical reinforcement and for draining the heat loss serve the engine.

The end holes in the housing element are not arranged in a square but define a rectangle with sides of different lengths. Only then is the modular system according to the invention Baying of the housing and flange elements possible.

So like the housing elements the flange elements are all constructed in the same way their dimensions are matched to the housing part.

each Flange element can have at least eight prefabricated holes, the alignment of four of these holes with the Alignment of the four holes of a housing element matches. So it is possible a flange element in any position with at least one housing element connect to. Four additional holes can be used for external connection be provided.

The invention is described below using exemplary embodiments with reference to FIG Drawing figures explained in more detail.

Brief description of the drawings

1 shows a perspective view of a housing element of the motor housing according to the invention (without flange elements);

2 shows a perspective view of a motor housing, consisting of two lined up, connected by flange elements or closed on the front housing elements;

3 shows a perspective view rotated by 180 ° of the in 2 shown motor housing.

Description of a preferred embodiment the invention

In 1 is a perspective view of a housing member 12 shown the motor housing according to the invention. The housing element 12 is made according to the invention from an essentially tubular extruded profile and cut to the required length. Suitable metals or plastics can be used as the material for the extrusion process.

The housing element comprises on the outer lateral surface 12 two axially extending rib-shaped thickenings 14 . 16 , which are used on the one hand for mechanical reinforcement and on the other hand for fastening the flange elements ( 2 ). The thickening also works 14 . 16 as cooling surfaces for dissipating the power loss of the motor.

The thickening 14 . 16 have holes on both ends 18 on. These holes 18 take fasteners for mounting the flange elements. The holes define a rectangle with sides a and b of different lengths. This is important, among other things, for the ability to attach the housing elements 12 and will be explained in more detail below.

In 2 is a perspective view of a fully assembled motor housing 10 shown. The engine case 10 consists of two cased housing elements 12 and 12 ' by flange elements 20 . 20 ', 20 " are connected to one another or closed at the end.

The first housing element 12 is on one end by a flange element 20 closed and on the other end by a flange element 20 ' , A second housing element 12 ' is on the flange element 20 ' put on and in such a way that it rotates by 90 ° to the first housing element 12 is aligned. As a result, the end face, the flange element 20 ' facing holes 18 of the two housing elements 12 and 12 ' not on a line, so each housing element with separate fasteners on the flange element 20 ' can be attached. Here, the flange element 20 ' prefabricated holes 22 have, each with the holes 18 of the two differently aligned housing parts 12 and 12 ' to match. Further holes 28 can be provided to mount the motor.

The second housing part 12 ' is in turn by another flange element 20 " covered, the flange element 20 " for example, can have a central opening. There is a bearing in the opening 24 for pivoting a rotor shaft 26 used, which is guided through the opening to the outside.

3 shows a perspective view of the in 2 shown motor housing 10 seen from below, i.e. rotated by 180 °. There are openings 30 . 32 through which, for example, the electrical connections of the motor are routed. There is also a sealing element 34 on the flange element 20 provided for a possible further housing element 12 sealed on the flange element 20 to arrange.

In the manner described above, a housing element can alternately 12 and a flange element 20 can be strung together in any number, so that a motor housing tailored to the respective application can be easily assembled 10 can be realized.

In the individual housing elements 12 . 12 ' In addition to the motor itself, other motor components such as the control electronics for controlling or regulating the electric motor, a brake, gear units or angle measuring devices can be installed.

Of course, the housing elements 12 . 12 ' forming extruded profiles in different diameters, so that motor housings can be made in any size.

10

motor housing

12

housing element 12 '

14

thickening

16

thickening

18

drilling

20

flange 20 ', 20 "

22

drilling

24

camp

26

rotor shaft

28

drilling

30

opening

32

opening

34

sealing element

a

page length

b

page length

Claims (6)

Motor housing ( 10 ) for an electric motor and / or its additional parts, consisting of one or more similar housing elements that can be stacked together ( 12 . 12 ' ) by flange elements ( 20 . 20 ' . 20 " ) can be closed at the end and / or can be connected to one another, at least four bores ( 18 ) are provided for introducing fasteners, which define a rectangle with sides a and b of different lengths, alternately with a housing element ( 12 . 12 ' ) and a flange element ( 20 . 20 ' . 20 " ) can be lined up in any number, and the adjacent housing elements ( 12 . 12 ' ) are arranged rotated by 90 degrees to each other. Motor housing according to claim 1, characterized in that the housing elements ( 12 . 12 ' ) are made from an extruded profile. Motor housing according to one of the preceding claims, characterized in that each housing element ( 12, 12 ' ) is essentially tubular and has two axially extending thickenings on its outer surface ( 14, 16 ) having. Motor housing according to one of the preceding claims, characterized in that the thickenings ( 14 . 16 ) the holes on the front ( 18 ) to introduce the fasteners. Motor housing according to one of the preceding claims, characterized in that the flange elements ( 20 . 20 ' . 20 " ) are of the same design. Motor housing according to one of the preceding claims, characterized in that each flange element ( 20 . 20 ' . 20 " ) at least eight holes ( 22 . 28 ), with the alignment of four of these holes ( 22 ) with the alignment of the four holes ( 18 ) a housing element ( 12 . 12 ' ) matches.