Fan attachment structure and fan

• US 10,856,435 B2
• Filed: 10/20/2017
• Issued: 12/01/2020
• Est. Priority Date: 10/27/2016
• Status: Active Grant

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: Sasaki, Kazuyuki
• Primary Examiner(s): Pape, Zachary
• Application Number:
  US15/789,144
• Publication Number:
  US 20180124948A1
• Time in Patent Office: 1,138 Days
• Field of Search: 361676-678, 36167946-67954, 361688-723, 165 801- 805, 16510433, 165185, 174 151- 153, 174 161- 163, 174547, 174548, 257712-722, 257E23088, 24453, 24458-459, 454184, 312236
• CPC Class Codes: F04D 25/06 the pump being electrically driven F04D25/08 takes precedence
• CPC Class Codes: F04D 25/0606 the electric motor being specially adapted for integration in the pump
• CPC Class Codes: F04D 29/325 for axial flow fans blade mountings F04D29/34, blades F04D29/38
• CPC Class Codes: F04D 29/522 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/601 specially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/646 Mounting or removal of fans
• CPC Class Codes: H05K 5/0247 Electrical details of casings, e.g. terminals, passages for cables or wiring
• CPC Class Codes: H05K 7/20172 Fan mounting or fan specifications

Abstract

A fan attachment structure for attaching a fan to a casing is provided. The casing includes an accommodation portion configured to accommodate the fan, and an engaged portion formed on a side surface of the accommodation portion. The fan includes an engagement portion formed in a housing, and configured to engage with the engaged portion to restrict movement of the fan in a direction from an interior of the accommodation portion to an opening portion, and a rattling suppressing mechanism formed on a surface of the housing facing toward the side surface of the accommodation portion and configured to bias the fan in a direction apart from the side surface of the accommodation portion.

Claims

1. An attachment structure of a fan for attaching to a casing the fan configured to cool an electronic part accommodated in the casing, wherein the casing includes:

an accommodation portion including an opening portion in which the fan is inserted, and being configured to accommodate the fan; and

an engaged portion formed on a side surface of the accommodation portion, and

wherein the fan includes;

an impeller including a blade;

a housing configured to rotatably support the impeller;

an engagement portion formed in the housing and configured to engage with the engaged portion to restrict movement of the fan in a direction from an interior of the accommodation portion toward the opening portion; and

a biasing portion having a pair of elastically deformable contact portions that are part of the housing facing toward a side surface of the accommodation portion of the casing, and configured to exert a force on the accommodation portion of the casing to move the fan in a direction towards the opening portion of the accommodation portion.

2. The attachment structure of the fan according to claim 1, wherein:

the fan includes a motor configured to drive the impeller;

the casing accommodates an electronic substrate on which the electronic part is mounted;

a supply side connector configured to supply power to the motor is mounted on the electronic substrate; and

the housing includes a load side connector configured to connect with the supply side connector.

3. The attachment structure of the fan according to claim 1, wherein the biasing portion is configured to bias the fan in a direction to move from the interior of the accommodation portion toward the opening portion.

4. The attachment structure of the fan according to claim 1, further comprising an operation portion formed in the housing and configured to disengage the engaged portion and the engagement portion.

5. The attachment structure of the fan according to claim 4, wherein the operation portion is formed extending outwardly from the opening portion of the accommodation portion.

6. The attachment structure of the fan according to claim 4, wherein:

the operation portion is arranged in the accommodation portion, and

a space is formed between the side surface of the accommodation portion facing toward the operation portion, and the operation portion, and is configured to allow insertion of a fingertip of an operator therein.

7. The attachment structure of the fan according to claim 1, wherein the housing includes a protrusion portion formed on a surface of the housing facing toward a side surface of the accommodation portion.

8. A fan for cooling an electronic part accommodated in a casing, and the fan inserted from an opening portion formed in an accommodation portion of the casing and accommodated in the accommodation portion, the fan comprising:

an impeller including a blade;

a housing configured to rotatably support the impeller;

an engagement portion formed in the housing, and configured to engage with the engaged portion formed on a side surface of the accommodation portion to restrict movement of the fan in a direction from an interior of the accommodation portion toward the opening portion; and

a biasing portion having a pair of elastically deformable contact portions that are part of the housing facing toward a side surface of the accommodation portion of the casing, and configured to exert a force on the accommodation portion of the casing to move the fan in a direction towards the opening portion of the accommodation portion.

9. The fan according to claim 8, further comprising a motor configured to drive the impeller,

wherein the housing includes a load side connector configured to connect with a supply side connector configured to supply power to the motor and arranged on an electronic substrate on which the electronic part is mounted.