Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
  • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
  • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
  • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields

Definitions

• Bearing device method for mounting a bearing device and electric machine with a bearing device
• the invention is based on a bearing device according to the preamble of claim 1, a method for fastening a bearing device according to the term of claim 9 and an electric machine according to the preamble of claim 11.
• Electric motors consist of mutually rotating parts, e.g. Pole housing with magnets, brush holder and anchor parts. It is known to use their bearings sintered bushings or calottes, which are impregnated with oil, as a warehouse. These are held by elastic retaining springs in correspondingly shaped recesses in brackets or lids, which are usually deep-drawn from steel. The retaining springs have resilient elements in the interior, which press the bearing and are firmly connected in the outer area with the straps or lids.
• connection In order to fix the retaining springs, various types of connection are known, which are designed to be non-positive, positive or frictional, such as, for example, Bayonet locks, reshaping or riveting of rivet pins, which are formed by a deep-drawing process, pressing in and fixing on the outer diameter in correspondingly shaped sintered bearing seats.
• the fixation must all operating forces, e.g. Shake, bearing forces, etc., record and allow for spherical bearings also their orientation.
• a twisting moment of the fixation must not be too low, as this has an effect on the storage behavior during operation, such as spinning, and thus noise. On the other hand, too great a twisting moment makes it difficult to align the calotte.
• the bearing device according to the invention for a bearing element of an electric machine proposes to provide in a receptacle of a mounting element at least one locking means with which a retaining spring ring on the mounting member can be latched. This eliminates a series of complex assembly steps. It is advantageous or the latching means are formed directly during deep drawing of the mounting member by a flow process of the material. In particular, the latching elements are formed counter to the molding direction, for example by material flowing counter to the molding direction during the molding process in order to form the latching elements.
• the one or more locking means is / are designed so that they lock in a movement of a latched part, in particular of the retaining spring ring, against a mounting direction in which they are mounted on the electric machine.
• the storage device can be connected to the electric machine in a single assembly step. It is only one mounting direction necessary, in particular, a rotational movement can be avoided.
• the elements to be mounted in particular bearing element, retaining spring ring and mounting element can be assembled in a type of sandwich construction and connected to one another and to the electric machine in one step. This makes it possible to dispense with an alignment of the elements to each other during assembly ge. There are no test stations for checking assembly steps.
• the storage device is compact and requires only a small space or installation depth and therefore allows a shortening of the electric machine.
• the mounting element which is preferably designed as a bracket or cover, only a low thermoforming ratio is necessary. Therefore, a low cost, low material quality is sufficient. Furthermore, material can be saved.
• the mounting member and the retaining spring ring have a simple structure and a simple geometry, as can be dispensed with punching and the like. The proposed embodiment automatically results in a stiffening of the mounting element.
• the latching means is arranged in the installed state of the electrical machine facing concave trough of the mounting member.
• the retaining spring ring has on its outer circumference an edge projecting in the axial direction, with which an undercut of the locking means can be engaged.
• the retaining spring ring has a simple, because annular geometry.
• the edge is formed on a concave to the mounting element formed curvature. This increases the stability and the elasticity of the retaining spring ring.
• spring tongues are arranged on the retaining spring ring at the opening for receiving the bearing element, which are inclined in the axial direction, the spring tongues and the outer peripheral edge facing axially in the same direction. This allows a particularly simple assembly of the assembly in sandwich construction.
• the locking means is arranged on a convex toward the locking means bead. This allows an improved rigidity of the mounting element can be achieved.
• an advantageous stiffening of the mounting element results when in the region of the edge of the retaining spring ring in the mounting element a recess is formed into which the retaining spring ring dips with its curvature.
• the depression further facilitates over-pressing of the retaining spring ring for latching with the locking means or the locking means.
• At least three locking means can be arranged on a radius on the mounting element. Conveniently circumferentially equally distributed six locking means.
• the number of latching means, their design, the embodiment of the retaining spring counterpart of the latching means or of the latching means can be designed as required by a person skilled in the art.
• a method for fastening a bearing device to an electrical machine in which a retaining spring ring is placed in a mounting test on the electric machine, a bearing element is inserted into a central opening of the retaining spring ring, a mounting element with its mounting is placed over the bearing element and the mounting member is pushed axially by a predetermined distance in the direction of the mounting test, which is sufficient to cause a locking between the retaining spring ring and one or more locking means of the mounting member.
• the individual elements are combined and locked together with a single step.
• the bearing device can be arranged on the electric machine.
• the bearing element is centered on the bearing seat of the shaft of the electric machine. Due to the elastic deformation of the resiliently executed inner contour of the mounting element, a sufficient holding force is generated, and the retaining spring ring is securely fixed in its position.
• the distance traveled by the mounting element or an end position of a displacement means which causes the displacement of the mounting element by the distance monitored. If the shift electro-pneumatic, this can be done automatically and the end position of a corresponding displacement cylinder are queried with high security.
• Figures 1 a, b, c show a sequence of preferred method steps in assembling a preferred storage device and an electric machine
• FIG. 2 shows a section through the preferred storage device in Fig. 1.
• FIG. 3 shows a detail of the bearing device of FIG. 2;
• FIG. 4 a, b is a perspective view of the bearing device of Figure 2 in front view (Fig. 4a) and rear view (Fig. 4b).
• FIG. Ia-Ic A sequence of preferred method steps in the assembly of a preferred storage device 10 with an electric machine 30 is shown in Fig. Ia-Ic.
• the bearing device 10 comprises a bearing element 11, which is inserted into a central opening 18 of a retaining spring ring 13.
• An arrow indicates an axial direction, which corresponds overall to the mounting direction 29.
• the bearing element 11, which is preferably designed as a sintered bearing in the form of a dome, has a bore 12 into which, in the mounted state, a shaft 31 of the electric machine 30 engages.
• the retaining spring ring 13 is annular and has inside spring tongues 17 which protrude into the opening 18 and are inclined axially in the mounting direction 29.
• the spring tongues 17 hold the bearing element 11 firmly and block slipping out of the bearing element 11 against the mounting direction 29.
• an edge 15 is formed, which is axially bent in the mounting direction 29.
• the edge 15 is based on a curvature 16, which is arched to the mounting member 20.
• the edge 15 and the spring tongues 17 point in the same axial direction.
• the mounting member 20 is placed, the bearing element 11 is to dip into a receptacle 21 of the mounting member 20.
• the receptacle 21 is provided with an edge 26. hen, which is formed so that the bearing element 11 between the spring tongues 17 and the edge 26 is held securely and stably, in particular, follows the edge 26 in its internal geometry of the contour of the bearing element eleventh
• the mounting member 20 is preferably formed as a bracket with two laterally projecting tabs 22 and has a central recess 25 which opens to Haltefe- derring 13 and bearing element 11 out. Between the edge 26 of the receptacle 21 and the tabs 22, the mounting member 20 has a designed as an annular disc body 27. On its rear side, non-recognizable locking means are provided in the figure, which can engage with the edge 15 of the retaining spring ring 13.
• the bearing device 10 of the retaining spring ring 13, bearing element 11 and mounting member 20 is placed in the mounting direction 29 on the shaft 31 of the electric machine 30, wherein the bearing member 11 comes to rest on a bearing seat of the shaft 31. If a pressure is exerted on the mounting element 20 axially in the mounting direction 29, this slides with its locking means over the edge 15 of the retaining spring ring 13 and locked with this. At the same time thereby also the bearing element 11 is fixed axially and radially. Subsequently, the mounting member 20 may be connected to the electric machine, e.g. screwed or clipped.
• Fig. 2 shows a section through the preferred bearing device 10 of FIG. 1, in the locking means 23 can be seen, which are under attacked by the edge 15 of the retaining spring ring 13.
• These latching means 23 are opposite to the direction of formation of the mounting member 20, which corresponds to the direction of arrow 29, formed by, for example, material flows in the molding in the opposite direction.
• the bearing element 11, which is immersed in the central opening 18 of the retaining spring ring 13, abuts an inner contour of the edge 26 of the mounting member 20 and is clamped between it and the spring tongues 17.
• the edge 26 points in the assembled state on the electric machine 30 to the outside, while the spring tongues 17 point inwards to the electric machine 30.
• Fig. 3 shows in a detailed view alternative locking means 23.
• the edge 15 is based on a curvature 16, which can dive into a small recess 28 of the mounting member 20, which facilitates over-pressing of the mounting member 20 for locking between the edge 15 and locking means 23 during assembly.
• FIG. 4 a shows a front view
• FIG. 4 b shows a rear view of the bearing device 10 from the preceding figures.
• beads 26 can be seen in the body 27 of the mounting element 20, which can increase its rigidity by 10-15%.
• locking elements 23 can be seen, which are each arranged on a bead 26, wherein the beads 26 each bulge to the locking means 23.
• the locking elements 23 overlap with their undercuts 24 the edge 15 of the retaining spring ring 13th
• the storage device according to the invention is not limited to an electric motor, but can be used in a variety of electrical machine, for example, in generators.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Motor Or Generator Frames (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36975254

Family Applications (1)

Country Status (5)

Families Citing this family (3)

Citations (9)

• 2005
  • 2005-07-01 DE DE102005030871A patent/DE102005030871A1/de not_active Withdrawn
• 2006
  • 2006-06-22 KR KR1020077030664A patent/KR20080035526A/ko not_active Application Discontinuation
  • 2006-06-22 EP EP06763833A patent/EP1902508A1/de not_active Withdrawn
  • 2006-06-22 CN CNA2006800241618A patent/CN101213725A/zh active Pending
  • 2006-06-22 WO PCT/EP2006/063440 patent/WO2007003512A1/de active Application Filing

Patent Citations (9)

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