Anti-vibrational holding device for an electric motor

• US 6,897,580 B2
• Filed: 06/15/2001
• Issued: 05/24/2005
• Est. Priority Date: 06/19/2000
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: White, Robert
• Primary Examiner(s): Schuberg, Darren
• Assistant Examiner(s): ADDISON, KAREN B
• Application Number:
  US10/069,477
• Publication Number:
  US 20040135439A1
• Time in Patent Office: 1,439 Days
• Field of Search: F16/F01.5/04, H02/K00.5/24, 310/154.14, 310/51, 310/52, 310/89, 310/58, 310/91, 248/604, 248/605, 248/73, 248/638, 248/675, 248/647, 417/423, 417/674, 417360-365, 292/568, 165/121
• US Class Current: 310/51
• CPC Class Codes: F04D 29/668 damping or preventing mechanical vibrations
• CPC Class Codes: F16F 15/04 using elastic means single elements or their attachment F16F1/00 - F16F13/00; F16F15/023, F16F15/03 take precedence
• CPC Class Codes: H02K 5/08 Insulating casings
• CPC Class Codes: H02K 5/24 specially adapted for suppression or reduction of noise or vibrations
• CPC Class Codes: H02K 5/26 Means for adjusting casings relative to their supports

Abstract

The invention relates to an apparatus for vibration-insulated mounting of an electric motor (20), in particular a blower motor, having a first housing part (10), which encloses at least one pole ring (22) and magnets (24) of the electric motor (20) and has at least one opening (14, 16), through which the shaft (18) of the motor (20) reaches, and having a second housing part (54), which is embodied as a motor flange for securing the electric motor (20) to a carrier element, for instance a motor vehicle heating and/or air conditioning system, and at least partly embraces the first housing part (10) in the axial direction of the motor shaft (18).

It is proposed that on the outer circumference (26) of the first housing part (10), a plurality of radially extending, relatively flat plastic spokes (28) are provided, which engage associated, radially and axially extending recesses (57) of the second housing part (54), and which in the region of their radially outer end (32) have connecting means (36) for securing them to the second housing part (54).

Claims

1. An apparatus for vibration-insulated mounting of an electric motor (20) in the form of a blower motor, comprising:

a first housing part (10), wherein the first housing part encloses at least one pole ring (22) and magnets (24) of the electric motor (20) and has at least one opening (14, 16), wherein a shaft (18) of the motor (20) reaches through the at least one opening; and

a second housing part (54), wherein the second housing part is embodied as a motor flange for securing the electric motor (20) to a carrier element and at least partly embraces the first housing part (10) in an axial direction of the motor shaft (18),

wherein on the outer circumference (26) of the first housing part (10), a plurality of radially extending, relatively flat plastic spokes (28) are provided, wherein the plurality of plastic spokes engage associated, radially and axially extending recesses (57) of the second housing part (54), and wherein the plurality of plastic spokes have connecting means (36) for securing them to the second housing part (64) in a region of a radially outer end (32).

2. The apparatus of claim 1, wherein the first housing part (10) and the second housing part (54) comprise plastic.

3. The apparatus of claim 2, wherein the plastic spokes (28) are embodied integrally with the first housing part (10).

4. The apparatus of claim 1, wherein the plastic spokes (28) are shaped essentially trapezoidally, in such a way that with increasing radial distance from the motor (20), an axial length of the spokes (28) decreases.

5. The apparatus of claim 1, wherein the plastic spokes (28) are soft in a transverse direction, and the axial direction of the motor shaft (18), so that torsional torque pulses of the motor (20) are damped and decoupled from the second housing part (54).

6. The apparatus of claim 1, wherein at least three plastic spokes (28) are provided on the first housing part (10).

7. The apparatus of claim 1, wherein the plastic spokes (28), on each of a radial end (32) remote from the motor (20), have additional damping elements (34), wherein the additional damping elements are essentially perpendicular to the radial direction of the plastic spokes (28).

8. The apparatus of claim 7, wherein the additional damping elements (34) on ends of the plastic spokes (28) comprise plastic and are shaped integrally with the plastic spokes (28).

9. The apparatus of claim 8, wherein the additional damping elements (34) extend at least over an entire axial length of the radial end (32), remote from the motor, of the plastic spokes (28).

10. The apparatus of claim 7, wherein the additional damping elements (34), on each of an axial end toward the second housing part (54), have at least one axially extending connecting means (36), and at least one peg (44), wherein at least one peg engages a correspondingly shaped indentation in the recess (57) of the second housing part (54).

11. The apparatus of claim 10, wherein the at least one axially extending connecting means (36), are solidly connected to the second housing part (54).

12. The apparatus of claim 7, wherein the additional damping elements (34) are at least partly embraced by rubber elements (48), wherein the rubber elements come to rest between the damping elements (34) of the plastic spokes (28) of the first housing part (10) and the wall of the associated recess (57) in the second housing part (54).

13. The apparatus of claim 1, wherein the recesses (57) of the second housing part (54), for receiving the plastic spokes (28) of the first housing part (10), taper conically in the axial direction, so that after the two housing parts (10, 54) have been axially joined together, the plastic spokes (28) are partly clamped into the associated recesses (57).

14. The apparatus of claim 11, wherein the pegs (44) of the additional damping elements (34) are riveted to the second housing part (54).