Housing for box fan, box fan and assembly method thereof

Patent metadata

Field	Value
Publication number	US-2018231024-A1
Application number	US-201515748582-A
Country	US
Kind code	A1
Filing date	Dec 14, 2015
Priority date	Sep 30, 2015
Publication date	Aug 16, 2018
Grant date	—

Abstract

A housing ( 100 ) for a box fan ( 1 ), the box fan ( 1 ) and an assembly method therefor are provided. The box fan ( 1 ) includes a housing ( 100 ) and a fan blade. The housing ( 100 ) includes two shields ( 111, 112 ) and a frame. The two shields ( 111, 112 ) are arranged opposite to and spaced apart from each other. The frame is arranged between the two shields ( 111, 112 ). The frame and the two shields ( 111, 112 ) are joined and mounted through their own structures respectively, and at least one of the shields can be attached to or detached from the frame by pushing or pulling. The fan blade is rotatably installed in the housing ( 100 ). The box fan is easy to assemble and low in cost.

First claim

1 . A box fan comprising:
a housing, the housing comprising two shields and a frame, the two shields being opposite to and spaced from each other, the frame being arranged between the two shields, the frame and the two shields being joined and mounted through their own structures, and at least one of the shields being pushably and pullably mounted and dismounted relative to the frame; and a fan blade rotatably arranged in the housing.

2 . The box fan according to claim 1 , wherein each of the two shields and the frame is a plastic part.

3 . The box fan according to claim 1 , wherein at least one of the shields is fitted with the frame through one or more of: snap connection, and insertion connection.

4 . The box fan according to claim 1 , wherein the frame comprises a plurality of lateral plates which are joined and mounted head to tail sequentially.

5 . The box fan according to claim 4 , wherein two adjacent lateral plates are fitted with each other through one or more of: snap connection and insertion connection.

6 . The box fan according to claim 1 , wherein the two shields are a first shield and a second shield arranged opposite to each other, each of the first shield and the second shield is configured as a rectangle, the frame comprises a first lateral plate, a second lateral plate, a third lateral plate and a fourth lateral plate which are connected together head to tail sequentially by snap connection, the first lateral plate and the third lateral plate are arranged opposite to each other and fitted with two opposite edges of the first shield respectively, the second lateral plate and the fourth lateral plate are arranged opposite to each other and fitted with the other two opposite edges of the first shield respectively, the second shield is pushable and pullable relative to the frame and is fitted with the first lateral plate, the second lateral plate and the third lateral plate.

7 . The box fan according to claim 6 , wherein each of the first lateral plate, the second lateral plate, the third lateral plate and the fourth lateral plate defines a limiting groove, each of four edges of the first shield is limited in the limiting groove through insertion connection.

8 . The box fan according to claim 7 , wherein the limiting groove in each of the first lateral plate and the third lateral plate is a wedge-shaped groove, the wedge-shaped groove has a width increasing gradually in a direction from the second lateral plate to the fourth lateral plate.

9 . The box fan according to claim 6 , wherein two adjacent lateral plates among the first lateral plate, the second lateral plate, the third lateral plate and the fourth lateral plate are limited through insertion connection between an insertion and an insertion groove.

10 . The box fan according to claim 6 , wherein each of the first lateral plate, the second lateral plate and the third lateral plate defines a push-pull groove, and the second shield is pushably and pullably fitted with the push-pull groove.

11 . The box fan according to claim 10 , wherein the push-pull groove in each of the first lateral plate and the third lateral plate is a wedge-shaped groove, the wedge-shaped groove has a width increasing gradually in the direction from the second lateral plate to the fourth lateral plate.

12 . The box fan according to claim 6 , wherein a lateral surface of the third lateral plate far away from the first shield and a lateral surface of the first lateral plate far away from the first shield are both higher than a lateral surface of the fourth lateral plate far away from the first shield, a push-pull mouth is defined by the lateral surface of the fourth lateral plate, the first lateral plate and the third lateral plate, and the push-pull mouth is fitted with one of edges of the second shield.

13 . The box fan according to claim 6 , wherein each of the first lateral plate and the second lateral plate is a straight plate, and each of the third lateral plate and the fourth lateral plate is a U-shaped plate.

14 . A housing for a box fan comprising:
a first shield and a second shield, arranged opposite to and spaced from each other, and each of the first shield and the second shield being configured as a rectangle; and a frame, arranged between the first shield and the second shield, comprising a first lateral plate, a second lateral plate, a third lateral plate and a fourth lateral plate which are joined and mounted head to tail sequentially along a peripheral direction of the frame, the first lateral plate and the third lateral plate being arranged opposite to each other and being joined and mounted to two opposite edges of the first shield respectively, the second lateral plate and the fourth lateral plate being arranged opposite to each other and being joined and mounted to the other two opposite edges of the first shield respectively, the second shield being pushable and pullable relative to the frame and being fitted with the first lateral plate, the second lateral plate and the third lateral plate.

15 . An assembly method for a box fan, wherein the box fan comprises a first shield, a second shield, a frame and a fan-blade electric motor, the assembly method comprises:
mounting the fan-blade electric motor to the first shield; and joining and mounting the frame to the first shield through a structure of the frame itself and a structure of the first shield itself; and joining and mounting the second shield to the frame through a structure of the second shield itself and a structure of the frame itself by means of pushing and pulling.

16 . The assembly method according to claim 15 , wherein the frame is constituted of a plurality of lateral plates and the assembly method comprises:
joining and mounting the plurality of lateral plates to the first shield, and joining and mounting the plurality of lateral plates head to tail.

17 . The assembly method according to claim 16 , wherein the frame is constituted of a first lateral plate, a second lateral plate, a third lateral plate and a fourth lateral plate, the assembly method comprises:
joining and mounting the fourth lateral plate to the first shield; joining and mounting the first lateral plate and the third lateral plate to the first shield and to the fourth lateral plate respectively; joining and mounting the second lateral plate to the first shield and to the first lateral plate and the third lateral plate; and pushing the second shield from the fourth lateral plate to a position among the first lateral plate, the second lateral plate and the third lateral plate and joining and mounting the second shield to the first lateral plate, the second lateral plate and the third lateral plate respectively.

18 . The assembly method according to claim 17 , wherein the fourth lateral plate is pushed towards the first shield in a plane of the first shield, wherein the fourth lateral plate is joined and mounted to the first shield.

19 . The assembly method according to claim 17 , wherein the first lateral plate and the third lateral plate are pushed towards the fourth lateral plate in a plane of the first shield, wherein the first shield and the fourth lateral plate are joined and mounted.

20 . The assembly method according to claim 17 , wherein the second lateral plate is pushed towards the fourth lateral plate in a plane of the first shield, wherein the first shield, the first lateral plate and the third lateral plate are joined and mounted.

Assignees

• Gd Midea Env Appliances Mfg Co Ltd
• Midea Group Co Ltd

Inventors

• Guo Runming
• Liu Weiliang
• Yan Fengxi
• Zhang Xusheng
• Deng Meihua

Classifications

• F04D29/522 Primary

  especially adapted for elastic fluid pumps · CPC title

• F04D29/526 Primary

  Details of the casing section radially opposing blade tips (ducts F04D29/545) · CPC title

• F04D25/06

  the pump being electrically driven (F04D25/08 takes precedence) · CPC title

• F04D29/703

  specially for fans, e.g. fan guards · CPC title

• F04D29/646

  Mounting or removal of fans · CPC title