Cooling fan structure capable of quick-releasing and replacing bearing and motor

Abstract

A quick-release cooling fan structure with replaceable bearings and motor includes a fan frame assembly, a motor assembly, an impeller rotor assembly, and a ball bearing module. The fan frame assembly includes a fan frame body with a fixed cylinder fixed to its bottom. The upper outer side of the fixed cylinder has threads. The ball bearing module is installed inside the fixed cylinder, and the motor assembly is installed outside the fixed cylinder via a locating nut. The impeller rotor assembly includes a protective cover installed outside the motor assembly and a central shaft installed inside the ball bearing module. A plastic impeller is installed outside the protective cover. A disassembly / removal guard plate is provided above the impeller rotor assembly, and a limiting block is provided inside the guard plate. A limiting groove adapted to the limiting block is formed on the protective cover. This application allows for quick disassembly and reassembly of the impeller rotor assembly using anti-slip nuts for tightening, and allows for replacement of the ball bearing module and motor assembly, facilitating easy disassembly and maintenance.

Claims

1. A quick-release, replaceable bearing and motor cooling fan structure, comprising a fan frame assembly (1), wherein a motor assembly (2) is installed inside the fan frame assembly (1), and an impeller rotor assembly (3) is installed on the outside of the motor assembly (2), characterized in that: the fan frame assembly (1) comprises a fan frame body (1.1), a fixing cylinder (1.2) is fixedly connected to the bottom of the fan frame body (1.1), the upper part of the outer side of the fixing cylinder (1.2) is threaded and a ball bearing module (4) is installed on the inner side, the motor assembly (2) is screwed to the upper part of the fixing cylinder (1.2) by a positioning nut (5) and installed on the outside of the fixing cylinder (1.2), and the impeller rotor assembly (3) comprises a protective cover (3.1) installed on the outside of the motor assembly (2) and a central shaft (3.1) installed on the inner side of the ball bearing module (4). 3) The top of the central shaft (3.3) is exposed outside the protective cover (3.1) and is screwed with an anti-slip nut (8). A plastic impeller (3.2) is installed on the outside of the protective cover (3.1). A U-shaped disassembly and assembly guard plate (6) is provided above the impeller rotor assembly (3) and is movably sleeved on the outside of the fan frame assembly (1). A limiting block (7) is provided on the inner side of the disassembly and assembly guard plate (6) and an operation hole (6.1) corresponding to the anti-slip nut (8) is opened in the middle. A limiting groove that matches the limiting block (7) is opened on the protective cover (3.1).

2. The quick-release, replaceable bearing and motor cooling fan structure as described in claim 1, wherein, The motor assembly (2) includes a sleeve (2.1) sleeved on the outside of the fixed sleeve (1.2), and a stator winding (2.2) is installed on the outside of the sleeve (2.1).

3. The quick-release, replaceable bearing and motor cooling fan structure as described in claim 2, wherein, The bottom of the sleeve (2.1) is detachably connected to a positioning plate (2.3), on which a circuit board and a controller are installed, and the positioning plate (2.3) is installed inside the bottom of the fan frame body (1.1) by screws.

4. The quick-release replaceable bearing and motor cooling fan structure as described in claim 1, wherein, The ball bearing module (4) includes a copper tube (4.1), inside which two ball bearings (4.2) are installed. The ball bearings (4.2) are installed on the outside of the central shaft (3.3). A fixing ring is formed on the top of the positioning nut (5), and the top of the copper tube (4.1) abuts against the bottom surface of the fixing ring.

5. The quick-release, replaceable bearing and motor cooling fan structure as described in claim 2, wherein, The protective cover (3.1) and the plastic impeller (3.2) are integrally formed. The protective cover (3.1) has a through hole at the center for exposing the top of the central shaft (3.3) and a fixing cover (3.4) is fixedly connected to the inside. The rotor assembly (3.5) that cooperates with the stator winding (2.2) is installed inside the fixing cover (3.4).

6. The quick-release, replaceable bearing and motor cooling fan structure as described in claim 5, wherein, The top of the central shaft (3.3) passes through the fixed cover (3.4), and the top of the central shaft (3.3) is threaded and screwed with an anti-slip nut (8). The operation hole (6.1) of the disassembly and assembly guard plate (6) corresponds to the anti-slip nut (8).

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