WO2010028910A1

WO2010028910A1 - Oscillation decoupling mount of an electric machine

Info

Publication number: WO2010028910A1
Application number: PCT/EP2009/059847
Authority: WO
Inventors: Andreas Schiel
Original assignee: Robert Bosch Gmbh
Priority date: 2008-09-15
Filing date: 2009-07-30
Publication date: 2010-03-18
Also published as: EP2324561A1; CN102150345B; BRPI0918417A2; DE102008042105A1; CN102150345A

Abstract

The invention relates to a device for the oscillation-decoupling mounting of an electric machine having a pole housing, comprising a machine mount that is equipped with at least one oscillation-decoupling element for contacting the pole housing. The invention provides that the machine mount (1) consists of two axial ring elements (2), of substantially equal design in interior and exterior jacket contour and which can be assembled in an axially self-supporting manner, for forming a pipe structure (32) that laterally encases the machine and that is axially open. The invention further relates to a method for the oscillation-decoupling mounting of an electric machine, a pole housing comprising a machine mount that is equipped with at least one oscillation-decoupling element for contacting the pole housing. For this purpose the mounting of the electric machine is provided in an axially open pipe structure (32) laterally encasing the machine, said structure comprised of two axially self-supporting ring elements (2) of substantially equal design in interior and exterior jacket contour.

Description

description

Title Oscillation decoupling holder of an electrical machine

The invention relates to a device for vibration-decoupling mounting of an electrical, a pole housing having machine, with a machine attachment, which is provided with at least one vibration decoupling element for engaging the pole housing.

State of the art

Electric machines cause vibrations during operation which are to be decoupled from their surroundings, in particular from their suspensions. For this purpose, various forms of vibration decoupling elements are known. These act preferably in that they support the pole housing of the machine as possible on all sides or surrounded to several in such a way that vibrations in all three dimensions can be damped. For this purpose, it is known, for example, to use electric machines at several support points in cup-shaped housing, which provide at several points vibration decoupling elements for contact with the pole housing, so that the pole housing is decoupled from the machine attachment by the vibration decoupling elements. These designs are expensive and require relatively large outer housing as a machine attachment, which are not desirable or applicable in all applications.

The object of the invention is to provide a device for vibration-decoupling mounting of an electrical machine, which allows the installation of the electric machine directly to the pole housing without further panel in the machine attachment and this offers the widest possible design freedom.

Disclosure of the invention For this purpose, a device is proposed for vibration-decoupling mounting of an electrical, a pole housing having machine, with a machine attachment, which is provided with at least one vibration decoupling element for engagement with the pole housing. It is envisaged that the machine attachment consists of two axially self-holding mating, in the inner and outer shell contour substantially the same design ring elements for forming a machine laterally sheathing and axially open tubular structure. The machine attachment is, unlike in the prior art, for vibration decoupling therefore not formed as the pole housing substantially on all sides comprehensive housing, but as an axially open tube structure. The axially open tube structure is in this case formed by the two ring elements, which are formed substantially the same. This does not mean that the ring elements must have the exact same contour, it is sufficient that they are substantially equal, ie in particular have substantially the same cross-section. Of course, in particular in order to effect the axially self-holding design, contour differences are not only possible, but even required. Nevertheless, the ring elements have approximately the same diameter in order to form an ultimately continuous tube structure, in which the electric machine is ingested. The two ring elements are in this case designed so that they can be joined together and are fixed self-holding. The formation by means of two self-holding mating ring elements allows easy insertion of the electric machine in the tube structure, namely in particular so that when disengaged ring elements, the vibration decoupling element or several vibration decoupling elements are arranged either on the electric machine and / or at least one of the ring elements and the electrical Machine is inserted into this one ring element, wherein the arrangement thus obtained is closed by the second ring element to the tube structure and receives the electric machine with the vibration decoupling elements in it. It is preferably provided that the vibration decoupling element has a ball structure at least in sections. By means of the ball structure is a good on all sides, particularly effective vibration isolation and vibration damping possible; In particular, a small but universally effective bearing surface can be effected.

In a particularly preferred embodiment, the vibration decoupling element has a dumbbell structure at least in sections. Preferably, the dumbbell structure is in this case formed so that it consists of two ball elements, which are connected by means of a small web. The pole housing of the electrical machine or a ring element is introduced in the region of the web so that the vibration decoupling element, namely the dumbbell structure, is held in the region of the web and the support of the respective other surfaces (namely the electric machine and / or at least one of the ring elements) takes place via the ball structures. In this way, a simple assembly of the electric machine and the vibration decoupling elements is possible because the individual components can be assembled relatively easily in this way.

In a further preferred embodiment, at least one ring element has an at least partially pocket-shaped receptacle for the vibration decoupling element. The vibration decoupling element can in this case be inserted into the receptacle; it is surrounded and / or encompassed on several sides.

For example, it is possible to introduce the vibration decoupling element already preassembled on the electric machine via the web of the dumbbell structure into the pocket-shaped receptacle of the ring element.

Particularly preferred recordings are formed only on one of the two ring elements. In this way, the

Vibration decoupling elements, for example, premounted on the pole housing of the electric machine, wherein the pole housing of the electric machine can be introduced with the pre-assembled vibration decoupling elements in the pocket-shaped receptacles of a ring element and already such a holding of the pole housing and the vibration decoupling takes place.

In a further embodiment, one of the ring elements of a receiving and the other a recording in the axial direction final on closing element. This end element closes the receptacle, in particular the pocket-shaped receptacle, in a previously open direction, so that the vibration decoupling element is held axially and radially within the tube structure. In this way, in particular when the vibration decoupling element is already preassembled on the pole housing and the pole housing has already been introduced into the ring element, a fixing of the electrical machine takes place in particular also in the axial direction.

It is particularly preferably provided that the receptacle and / or the end element is / are contour-adapted to the vibration decoupling element at least in sections, or that these elements have contour-adapted elements. By this at least partially contour adjustment a precise, defined positional fixation is achieved, so that a relative movement of the vibration decoupling element and ring element is not possible. Within the tube structure thus formed, both radial and axial fixation of the electrical machine via the vibration decoupling elements is ensured.

In a further embodiment, at least one fastening means for attachment to a component surrounding the device is formed on one or both ring elements. By means of such fastening means, the attachment of the machine attachment formed by the pipe structure to components of the environment is possible. These are, for example, eyelets or tabs with openings that allow, for example, the passage of screws and thus a screw.

In a further particularly preferred embodiment, the ring elements are interconnected by latching holding members, in particular with latching hooks and / or latching noses. As a result, in particular the axial generates self-retaining pipe structure, wherein the holding members automatically lock in a releasable manner, so that during assembly no additional fastening means such as fittings are required. At the same time, it is possible to solve the holding members in a simple manner, for example by canceling the detent by means of a screwdriver from each other.

In a particularly preferred embodiment, the machine is a double shaft motor, in particular a blower motor. Especially for such double shaft motors, as they are known, for example, in blower motors with mutually axially arranged fan wheels, the axially open tube structure as machine attachment is extremely advantageous because it allows both in the training of machine attachment and in their attachment to surrounding components particularly large structural freedom and at the same time inexpensive to produce and is very reliable.

Furthermore, a method is proposed for vibration-decoupling holding an electrical, a pole housing having machine with a machine attachment, which is provided with at least one vibration decoupling element for engaging the pole housing. It is provided that the holding of the electric machine in one of two axially self-holding mating, in the inner and outer shell contour substantially identically formed ring elements for forming a machine laterally sheathing and axially open tubular structure takes place.

Further advantageous embodiments will become apparent from the dependent claims and combinations thereof.

Brief description of the drawings

The invention will be explained in more detail with reference to an embodiment, but without being limited thereto.

Show it Figure 1 shows two ring elements for forming the axially open tube structure of the machine attachment;

Figure 2 shows the machine attachment in the closed state with a

Vibration decoupling element and

Figure 3 is a used in the machine attachment

Double shaft motor.

Embodiment (s) of the invention

FIG. 1 shows two ring elements 2 which can be axially joined together to form a machine attachment 1, the one ring element 3 having three receptacles 4 for receiving a not shown here

Vibration decoupling element has. The receptacles 4 are equal to each other angularly spaced on the inside, ie on a ring element inner surface 5 and inner contour 29, arranged and pocket-shaped, that is in the manner of a pocket 6, formed. For this purpose, they have a bottom surface 8 facing away from the other ring element 7, against which the vibration decoupling element, not shown here, can be supported. The vibration decoupling element, not shown here, can also be supported on a pocket lateral surface 9, which, in the formation of the pocket 6 on the one ring element 3, is preferably introduced into the vibration decoupling element (not shown here) at least in sections. The other ring element 7 has in the axial extension of the receptacles 4 these receptacles 4 opposite the bottom surface 8 final, preferably the pocket surface 9 at least partially adapted end elements 10 on. The end element 10 is preferably likewise contour-adapted to the vibration decoupling element, not shown here in FIG. 1, and serves to support the vibration decoupling element not shown here in the axial direction in the other ring element 7. Next, both ring elements 2 have fastening means 11 for fastening the ring elements 2 serve at least one surrounding component; these are in particular as eyelets 12th educated. The two ring elements 2 are assembled axially self-holding using externally the ring elements 2 attached, in particular integrally formed to these holding members, in particular the one ring element 3 at least one locking lug 13 and 5, the other ring element 7 at least one latching hook 14 corresponding thereto. When axial telescoping about the end elements 10 in the receptacles 4, the ring elements 2 are joined together with their facing abutment faces 15, in particular, each corresponding circumferential contour adjustments 16 io can be provided to avoid radial play of the two assembled ring elements 2. Furthermore, cable retaining means 17 and cable penetrations 18 are preferably provided on the outer peripheral side by at least one of the ring elements 2 in order to be able to electrically connect an electrical machine to be introduced therein.

15

Figure 2 shows the means of holding members 19, namely each latching lug 13 and latching hooks 14, axially assembled ring elements 2, wherein in the receptacles 4, which are formed on the one ring element 3, dumbbell vibration isolation elements 20 are introduced. The

20 vibration decoupling elements 20 each have the contour of a dumbbell 21, which is formed of two connected by a web 22 balls 23, namely a first ball 24 and a second ball 25, and wherein the balls 23 are made of an elastic material 30. The first ball 24 is supported on the receptacle 4 described in FIG. 1, namely

25 of the pocket 6, trained bottom surface 8, while the second ball 25 is supported on the described in Figure 1, formed on the other ring element 7 closing element 10. The vibration decoupling element 20 is thus held by the bottom surface 8 on the one hand and the end element 10 on the other hand in the axial direction. The vibration decoupling element

30 20 is supported circumferentially and in the radial direction of the pockets 6 forming pocket lateral surface 9 from. The hook-shaped cable holding means 17 are directly associated with the cable passage 18 and arranged for receiving cables or cable holders such as plugs outside circumference of the assembled ring elements 2.

35 FIG. 3 shows the machine attachment 1 with a double-shafted motor 26 inserted therein. The double-shafted motor 26 is a blower motor 27 with two axially opposite, aligned motor shafts 28 which emerge from the axially open machine attachment 1 and can, for example, receive fan wheels that are driven by the blower motor 27 are driven.

In particular, in this case, a self-ventilation of the double-shaft motor 26 in a very simple manner possible, which takes place in that the double-shaft motor 26 is introduced at a distance from the annular element inner surface 5 in the machine attachment 1, so can be flowed around by a cooling air jacket stream. For this purpose, in a simple manner on the motor shafts 28th

To install cooling air conveying means such as cooling air wheels, in particular also in addition to the actually driven by the double-shaft motor 26, not shown here fan wheels. The double-shaft motor 26 has for its insertion into the machine attachment 1, not shown here, substantially radially protruding tabs on its pole housing 31 which in the illustrated in Figure 2 dumbbell 21 of the vibration decoupling element 20, namely in the region of the web 22 between the balls 23, is introduced so that it is supported in the circumferential direction of the web 22 and in the axial direction of the two balls 23. The double shaft motor 26 is thus held exclusively by the vibration decoupling elements 20 within the machine attachment 1, which thus forms an axially open pole structure 32; a further contact with the inner contour 29 of the machine attachment 1 or the ring elements 2 is not provided here. The double-shaft motor 26 is here decoupled in a particularly advantageous manner from the machine attachment 1 and their taking place via the fastening means 11 arrangement in the environment. At the same time, the double-shaft motor 26 is particularly easy to introduce into the machine attachment that the vibration decoupling elements 20 shown in Figure 2 applied by its contour as a dumbbell 21 on the described tabs of the double-shaft motor 26 and so the arrangement of double shaft motor 26 and

Vibration decoupling elements 20 in the one ring member 3, which has the receptacles 4 for the vibration decoupling elements 20, can be inserted in the axial direction, the arrangement thus obtained by axially joining the one ring member 3 with the other ring member 7 and thus closing the receptacles 4 by the the other ring element 7 associated end elements 10 (see Figures 1 and 2) is closed. At the same time, the holding members 19 engage and lock the arrangement thus obtained in a reliable manner.

Claims

claims

1. A device for vibration-decoupling mounting of an electric, a pole housing having machine, with a machine attachment, which is provided with at least one vibration decoupling element for engagement with the pole housing, characterized in that the machine attachment (1) of two axially self-holding mating, in the interior and Outer shell contour substantially identically formed ring elements (2) for forming a machine laterally sheathing and axially open tube structure

(32) exists.

2. Apparatus according to claim 1, characterized in that the vibration decoupling element (20) has at least partially a ball structure.

3. Device according to one of the preceding claims, characterized in that the vibration decoupling element (20) at least partially has a dumbbell structure.

4. Device according to one of the preceding claims, characterized in that at least one ring element (2) has an at least partially pocket-shaped receptacle (4) for the vibration decoupling element (20).

5. Device according to one of the preceding claims, characterized in that receptacles (4) are formed only on one of the two ring elements (2).

6. Device according to one of the preceding claims, characterized in that of the ring elements (2) one of the receptacle (4) and the other has a receptacle (4) in the axial direction final closing element (10).

7. Device according to one of the preceding claims, characterized in that the receptacle (4) and / or the end element (10) are at least partially contour-matched to the vibration decoupling element (20) or have contour-matched elements.

8. Device according to one of the preceding claims, characterized by on one or both ring elements (2) formed fastening means (11) for attachment to a device surrounding the component.

9. Device according to one of the preceding claims, characterized in that the ring elements (2) by latching holding members (19) are interconnected, in particular with latching hooks (14) and / or -nasen (13).

10.Vorrichtung according to any one of the preceding claims, characterized in that the machine is a double-shaft motor (26), in particular fan motor (27).

11.Verfahren for vibration-decoupled holding an electrical, a pole housing having machine, with a machine attachment, which is provided with at least one vibration decoupling element to rest on the pole housing, characterized by holding the electrical machine in one of two axially self-holding mate, in the indoor and Outer shell contour substantially identically formed ring elements (2) for forming a machine laterally sheathing and axially open tubular structure (32).