Blower device

• US 10,644,562 B2
• Filed: 08/10/2018
• Issued: 05/05/2020
• Est. Priority Date: 09/13/2017
• Status: Active Grant

• Current Assignee: Shinano Kenshi Company Limited
• Original Assignee: Shinano Kenshi Company Limited
• Inventors: Fukuzawa, Akihito
• Primary Examiner(s): Nguyen, Tran N
• Application Number:
  US16/100,643
• Publication Number:
  US 20190081527A1
• Time in Patent Office: 634 Days
• CPC Class Codes: F04D 25/06 the pump being electrically driven F04D25/08 takes precedence
• CPC Class Codes: F04D 25/0613 the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
• CPC Class Codes: F04D 25/0693 Details or arrangements of the wiring
• CPC Class Codes: F04D 29/083 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/403 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/5813 Cooling the control unit
• CPC Class Codes: H02K 11/30 Structural association with control circuits or drive circuits
• CPC Class Codes: H02K 21/22 with magnets rotating around the armatures, e.g. flywheel magnetos
• CPC Class Codes: H02K 2205/09 Machines characterised by drain passages or by venting, breathing or pressure compensating means
• CPC Class Codes: H02K 2211/03 Machines characterised by circuit boards, e.g. pcb
• CPC Class Codes: H02K 5/10 with arrangements for protection from ingress, e.g. water or fingers
• CPC Class Codes: H02K 5/207 with openings in the casing specially adapted for ambient air
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132
• CPC Class Codes: H02K 5/24 specially adapted for suppression or reduction of noise or vibrations
• CPC Class Codes: H02K 7/14 Structural association with mechanical loads, e.g. with hand-held machine tools or fans with fan or impeller for cooling the machine H02K9/06
• CPC Class Codes: H02K 9/06 with fans or impellers driven by the machine shaft

Abstract

A blower device includes: a fan; a motor rotating the fan, and including: a stator; a coil; a housing supporting the stator; and a cover covering the stator and the coil; a case housing a printed circuit board electrically connected to the coil; a first elastic body; and a second elastic body.

Claims

1. A blower device comprising:

a fan;

a motor rotating the fan, and including;

a stator;

a coil;

a housing supporting the stator; and

a cover covering the stator and the coil;

a case housing a printed circuit board electrically connected to the coil;

a first elastic body; and

a second elastic body,

wherein

the housing includes;

a cylindrical portion supporting the stator at an outside of the cylindrical portion; and

a flange portion facing the cover, a diameter of the flange portion being greater than that of the cylindrical portion,

the case includes a peripheral wall portion,

the peripheral wall portion defines a periphery of an opening receiving the housing such that the flange portion is positioned inside the case and that the cylindrical portion is positioned outside the case,

the peripheral wall portion is positioned between the cover and the flange portion,

the first elastic body is sandwiched between the cover and one surface of the peripheral wall portion, is compressed in an axial direction of the motor, and is formed into an annular shape,

the second elastic body is sandwiched between the cover and the flange portion and between the flange portion and another surface of the peripheral wall portion, is compressed in the axial direction, and is formed into an annular shape,

an outer diameter of the second elastic body is smaller than that of the first elastic body.

2. The blower device of claim 1, wherein

the first elastic body includes an outer circumferential wall portion, and

the outer circumferential wall portion is in contact with an outer peripheral edge of the cover.

3. The blower device of claim 1, wherein

the first elastic body includes protruding portions, and

the protruding portions protrude in the axial direction, are in contact with the cover, and are arranged at intervals in a circumferential direction.

4. The blower device of claim 1, wherein

the second elastic body includes a through hole, and

a terminal electrically connecting between the coil and the printed circuit board penetrates through the through hole.

5. The blower device of claim 4, wherein

the flange portion includes a receiving hole,

the second elastic body includes a seal portion, and

the seal portion surrounds the terminal within the receiving hole.

6. The blower device of claim 1, wherein the first and second elastic bodies are arranged so as to at least partially overlap each other in a radial direction.