Noise suppression structure of blower motor

Abstract

In a noise suppression structure of a blower motor according to the present invention, a noise reduction member is disposed inside of a peripheral wall part of an end bracket member in such a manner that the noise reduction member is located in a position opposite side of the peripheral wall part to which a connector part is provided, a metal terminal member extended from the connector part has an extension part extendedly provided along a bottom surface part of the end bracket member in a circumferential direction thereof, and the extension part of the metal terminal member has a connection part to which the noise reduction member is connected.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

FIG. 1 is a partially cross-sectional top view illustrating a structure of an end bracket member of a noise suppression structure of a blower motor according to an embodiment of the invention, in which one of metal terminal members located on an upper side of the drawing is in a fixed state and the other of the metal terminal members located on a lower side of the drawings is in a state of middle of slide-insertion.

FIG. 2 is a top view illustrating the structure of the end bracket member of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 3 is an end view of a part corresponding to a position taken along a line B-B of FIG. 2, illustrating a structure of a lower surface caulking part of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 4 is a bottom view illustrating the structure of the end bracket member of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 5 is a top view illustrating one of the metal terminal members used in the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 6 is a side view illustrating one of the metal terminal members used in the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 7 is a rear view illustrating one of the metal terminal members used in the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 8 is a top view illustrating the other of the metal terminal members used in the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 9 is a side view illustrating the other of the metal terminal members used in the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 10 is a rear view illustrating the other of the metal terminal members used in the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 11 is an exploded side view illustrating an assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 12 is an exploded side view illustrating a process of the slide-insertion of the metal terminal member in the assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 13 is an exploded side view illustrating a fixing process of the metal terminal member in the assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 14 is an exploded side view illustrating a process of mounting of a brush holder member in the assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 15 is an exploded side view illustrating a process of holding brushes in the brush holder member in the assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 16 is an exploded rear view illustrating the process of the slide-insertion of the metal terminal member in the assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 17 is an exploded rear view illustrating the fixing process of the metal terminal member in the assembling process of the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 18 is a cross-sectional view taken along an axial direction, illustrating a structure in which the blower motor embedded with noise reduction members is attached to a bracket member which is made of a resin and suitable for being mounted in a vehicle, in accordance with the noise suppression structure of the blower motor according to an embodiment of the invention.

FIG. 19 is a cross-sectional view taken along an axial direction according to a conventional noise suppression structure of a fuel pump.

FIG. 20 is a cross-sectional view taken along a position of a line A-A of FIG. 19 according to the conventional noise suppression structure of the fuel pump.

Claims

1. A noise suppression structure of a blower motor, comprising: a bottomed, substantially cylindrical-shaped end bracket member including a peripheral wall part and a bottom surface part, the peripheral wall part being provided between the bottom surface part and a housing and an end edge of the peripheral wall part being configured to be mounted to an one end opening of the housing, and the bottom surface part being integrally formed with the peripheral wall part, rotatably supporting one end of a motor rotary shaft part and covering the one end opening of the housing;a connector part disposed in the end bracket member, provided in the peripheral wall part, and to which electric power is externally supplied;a metal terminal member provided in the end bracket member, coupled to the connector part, and including an extension part being extendedly provided along the bottom surface part in a circumferential direction of the bottom surface part and having a connection part;a brush member provided in the end bracket member and opposing a commutator mounted to the motor rotary shaft part; anda noise reduction member disposed in the end bracket member in a position opposite side of the peripheral wall part to which the connector part is provided, and inserted between the metal terminal member and the brush member to be connected with the connection part of the extension part of the metal terminal member and the brush member.

2. The noise suppression structure of the blower motor according to claim 1, wherein the noise reduction member includes a choke coil, and the noise suppression structure of the blower motor further comprises a guide member protruded from the bottom surface part toward an inside part of the blower motor, having a constant height, and configured to guide a conductor of the choke coil along the bottom surface part in the circumferential direction of the bottom surface part, and the guide member includes a metal terminal guide surface part on an upper surface thereof configured to slide and guide the metal terminal member when the metal terminal member is mounted to the connector part from the inside part of the blower motor.

3. The noise suppression structure of the blower motor according to claim 2, wherein the guide member includes a stopper part on a side surface of the guide member facing the connector part, which contacts with a rear end part of the metal terminal member to prevent the metal terminal member from coming off the connector part.

4. The noise suppression structure of the blower motor according to claim 1, wherein the connector part includes an insertion hole to which a part of the metal terminal member is inserted, and a size of the insertion hole is set in a size in which insertion of the metal terminal member in an oblique direction is tolerated.

5. The noise suppression structure of the blower motor according to claim 1, wherein the bottom surface part includes a reinforcement rib part, and an upper surface of the reinforcement rib part is provided with a supporting surface part which contacts with the metal terminal member from below to support the metal terminal member.

6. The noise suppression structure of the blower motor according to claim 2, wherein the guide member includes an inclined guide surface part between the metal terminal guide surface part and a side surface of the guide member facing the connector part, and the inclined guide surface part is slanted to have a constant dimension of drop.

7. The noise suppression structure of the blower motor according to claim 1, wherein the extension part of the metal terminal member includes a caulking part adapted to be fixed to the bottom surface part of the end bracket member.

8. The noise suppression structure of the blower motor according to claim 7, wherein the bottom surface part of the end bracket member includes a slide groove part which penetrates the bottom surface part and to which the caulking part is inserted to be caulked and fixed.

9. The noise suppression structure of the blower motor according to claim 1, wherein the connector part includes a caulking hole to which a part of the metal terminal member is inserted and caulked.

10. The noise suppression structure of the blower motor according to claim 1, wherein the bottom surface part includes a welding hole to which an electrode is inserted to connect the noise reduction member with the connection part of the extension part of the metal terminal member by resistance welding.

11. The noise suppression structure of the blower motor according to claim 1, wherein the end bracket member includes a supporting pin member protruded from the bottom surface part toward an inside part of the blower motor for supporting a brush holder member, and the brush member is slidably held in the brush holder member.

12. The noise suppression structure of the blower motor according to claim 2, wherein the conductor of the choke coil includes a bending point in which the conductor is bent to extend substantially linearly toward the connection part of the of the extension part of the metal terminal member.

13. The noise suppression structure of the blower motor according to claim 2, wherein a rear end part of the metal terminal member is chamfered such that the metal terminal member smoothly slides and contacts with the metal terminal guide surface part of the guide member.

14. The noise suppression structure of the blower motor according to claim 2, wherein the metal terminal member includes a pair of guide protrusions, and the bottom surface part includes guide protrusions protrudedly provided toward inside of the blower motor from the bottom surface part, and wherein an end part of the conductor of the choke coil on a side of the connecter part extends to be located between the pair of guide protrusions of the metal terminal member and protruded therefrom, and the protruded end part of the conductor is mounted between the guide protrusions.