Axial flow fan convenient to disassemble and assemble

Abstract

The utility model discloses an axial flow fan convenient to disassemble and assemble, which comprises a fan outer frame, a mounting seat arranged on the fan outer frame, a copper sleeve fixed on the mounting seat, a stator assembly fixed on the periphery of the copper sleeve and a fan mechanism rotationally supported on the copper sleeve, and the fan mechanism comprises a rotating shaft and a fan blade assembly fixed on the rotating shaft. The rotating shaft is supported in the copper sleeve through a bearing assembly, the bearing assembly comprises a plurality of bearings arranged in the axial direction of the rotating shaft, and the number of the bearings is larger than two. Movable limiting assemblies are arranged at the two axial ends of the copper sleeve respectively, each movable limiting assembly comprises a plurality of movable limiting blocks arranged at intervals in the circumferential direction of the copper sleeve, the movable limiting blocks are arranged on the inner wall of the copper sleeve, limiting steps abutting against the bearing are formed at the inner ends of the movable limiting blocks, and movable penetrating grooves are formed between the two sides, located in the circumferential direction of the copper sleeve, of the movable limiting blocks and a body of the copper sleeve. According to the axial flow fan, the fan blade assembly is convenient to disassemble and assemble, and the stability and the heat dissipation performance are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of axial flow fan, especially a kind of axial flow fan of convenient dismounting. BACKGROUND

[0002] Axial flow fan is a kind of air cooling fan commonly used in industrial applications, due to its simple structure, light weight, cheap, good heat dissipation effect and other advantages, is widely used in automobile engine cooling, industrial ventilation and air conditioning cooling and other fields.

[0003] The axial flow fan in prior art includes fan outer frame, mounting seat arranged on fan outer frame, copper sleeve fixed on mounting seat, stator assembly fixed on the outer periphery of copper sleeve and fan mechanism rotatably supported on copper sleeve, fan mechanism includes shaft and fan blade assembly fixed on shaft, wherein shaft is supported in copper sleeve through two bearings. When installing, copper bar or hand hammering tool is needed to knock bearing into copper sleeve, bearing outer ring is interference fit with copper sleeve, and tool is needed to clamp inner ring for dismounting when dismounting bearing, so that installation and dismounting are inconvenient. SUMMARY

[0004] In order to solve the above problems, the utility model aims at providing a kind of axial flow fan of convenient dismounting, improve dismounting efficiency.

[0005] Based on the above problems, the technical scheme provided by the utility model is:

[0006] A kind of axial flow fan of convenient dismounting, including fan outer frame, mounting seat arranged on fan outer frame, copper sleeve fixed on mounting seat, stator assembly fixed on the outer periphery of copper sleeve and fan mechanism rotatably supported on copper sleeve, fan mechanism includes shaft and fan blade assembly fixed on shaft,

[0007] The shaft is supported in the copper sleeve by bearing assembly, the bearing assembly includes a plurality of bearings arranged along the shaft axis, and the number of the plurality of bearings is greater than two;

[0008] The copper sleeve is respectively provided with movable limiting assembly at both ends in the axial direction, the movable limiting assembly includes a plurality of movable limiting blocks arranged at intervals in the circumferential direction of the copper sleeve, the movable limiting blocks are arranged on the inner wall of the copper sleeve and form a limiting step abutting against the bearing at the inner end, and the movable limiting blocks are located between the body of the copper sleeve on both sides in the circumferential direction of the copper sleeve and are provided with movable through slots.

[0009] When the bearing enters the copper sleeve through the movable limiting block, the movable limiting block moves to the radial outside of the copper sleeve.

[0010] In some embodiments, the movable limiting assembly includes two movable limiting blocks arranged on both sides in the radial direction of the copper sleeve.

[0011] In some of the embodiments, the movable limiting block is wedge-shaped, and the thickness of the movable limiting block gradually increases from the outside to the inside of the copper sleeve.

[0012] In some of the embodiments, a limiting boss is arranged on the inside of the copper sleeve close to the axial first end, a bearing is arranged between the axial first end of the copper sleeve and the limiting boss, and at least two bearings are arranged between the axial second end of the copper sleeve and the limiting boss.

[0013] In some of the embodiments, the outer rings of the two bearings stacked with each other are attracted by a magnetic member.

[0014] In some of the embodiments, the magnetic member is in the shape of a ring.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] (1) The movable limiting assembly is arranged on the axial both ends of the copper sleeve, when the bearing enters the copper sleeve through the movable limiting block, the movable limiting block can move to the radial outside of the copper sleeve, so as to be placed into, when disassembling, the movable limiting assembly is expanded by a tool, so as to facilitate the bearing to be taken out, and the dismounting efficiency is improved;

[0017] (2) The movable limiting block is wedge-shaped, which facilitates the installation of the bearing and ensures the limiting effect on the bearing after installation;

[0018] (3) The rotating shaft is supported by multiple bearings, which can improve the bearing capacity of the fan blade assembly, make the fan have higher stability, and reduce the noise and vibration of the fan;

[0019] (4) The rotating shaft is supported by multiple bearings, which can transmit heat through multiple bearings and improve the heat dissipation performance;

[0020] (5) The outer rings of the two bearings stacked with each other are attracted by a magnetic member, which can improve the stability of the arrangement of multiple bearings. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 It is a structural schematic view of the embodiment of the utility model of the axial flow fan convenient to disassemble;

[0023] Figure 2 It is Figure 1A local enlarged view at I in the middle;

[0024] Figure 3 A structure schematic view of the copper sleeve in the embodiment of the utility model;

[0025] Among them:

[0026] 1, fan outer frame;

[0027] 2, mounting seat;

[0028] 3, copper sleeve; 3-1, movable limiting block; 3-2, limiting boss; 3-3, movable slot;

[0029] 4, stator assembly;

[0030] 5, rotating shaft;

[0031] 6, fan blade assembly;

[0032] 7, bearing;

[0033] 8, magnetic piece. DETAILED DESCRIPTION

[0034] The above scheme is further described below in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the utility model and do not limit the scope of the utility model. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not mentioned are usually the conditions in the conventional experiments.

[0035] As shown in Figure 1 and Figure 2 , it is a structure schematic view of the embodiment of the utility model, providing a convenient disassembly and assembly axial flow fan, including fan outer frame 1, mounting seat 2 arranged on fan outer frame 1, copper sleeve 3 fixed on mounting seat 2, stator assembly 4 fixed on the outer periphery of copper sleeve 3 and fan mechanism rotationally supported on copper sleeve 3, and the fan mechanism includes rotating shaft 5 and fan blade assembly 6 fixed on rotating shaft 5.

[0036] Among them, rotating shaft 5 is supported in copper sleeve 3 through bearing assembly, and the bearing assembly includes a plurality of bearings 7 arranged along the axial direction of rotating shaft 5, and the number of the plurality of bearings 7 is greater than two.

[0037] In order to facilitate the installation and disassembly of the bearing 7, the copper sleeve 3 is respectively provided with a movable limiting assembly at the axial two ends, the movable limiting assembly comprises a plurality of movable limiting blocks 3-1 arranged at the circumference of the copper sleeve 3, the movable limiting block 3-1 is arranged on the inner wall of the copper sleeve 3 and the inner end forms a limiting step abutting against the bearing 7, and the movable limiting block 3-1 is located between the two sides of the circumference of the copper sleeve 3 and the body of the copper sleeve 3 and is provided with a movable through slot 3-3. When the bearing 7 enters the copper sleeve 3 through the movable limiting block 3-1, the movable limiting block 3-1 moves to the radial outside of the copper sleeve 3, so that the bearing 7 is conveniently placed into the copper sleeve 3, and the outer end of the bearing 7 abuts against the movable limiting block 3-1 after entering the copper sleeve, and when the bearing 7 needs to be disassembled, the movable limiting block 3-1 can be pried open by a tool to take out the bearing 7.

[0038] In the example, the movable limiting assembly comprises two movable limiting blocks 3-1 arranged at the radial two sides of the copper sleeve 3, the two movable limiting blocks 3-1 can stably support the bearing 7, and it should be understood that more movable limiting blocks 3-1 can be arranged according to the need, which is not limited by the utility model.

[0039] In combination with Figure 3 As shown in the figure, the movable limiting block 3-1 is wedge-shaped, and the thickness of the movable limiting block 3-1 gradually increases from the outside to the inside of the copper sleeve 3, so that when the bearing 7 needs to be installed, the bearing 7 can enter the copper sleeve 3 along the wedge surface of the movable limiting block 3-1, facilitating the installation of the bearing 7.

[0040] In the example, a limiting boss 3-2 is arranged at the inside of the copper sleeve 3 close to the axial first end, one bearing 7 is arranged between the axial first end of the copper sleeve 3 and the limiting boss 3-1, and two bearings 7 are arranged between the axial second end of the copper sleeve 3 and the limiting boss 3-2, so that the three bearings 7 support the rotating shaft 5, which can improve the stability of the support of the rotating shaft 5.

[0041] In order to further improve the stability of the bearing 7 installation structure, the outer rings of the two bearings 7 stacked with each other are attracted by the magnetic member 8, the bearing 7 located at the inside abuts against the limiting boss 3-1, and the bearing 7 located at the outside is attracted by the magnetic member 8 and the bearing 7 located at the inside and abuts against the movable limiting block 3-1, so as to ensure the stability of the bearing 7 structure. Preferably, the magnetic member 8 is in a circular ring structure, and the thickness of the magnetic member 8 can be set according to the need, so as to ensure the stability of the bearing 7 installation structure.

[0042] In summary, the axial flow fan facilitates the installation and disassembly of the fan mechanism, facilitates maintenance, and improves work efficiency.

[0043] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable the personnel familiar with the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A shaft fan with convenient disassembly and assembly, comprising a fan frame, a mounting seat arranged on the fan frame, a copper sleeve fixed on the mounting seat, a stator assembly fixed on the outer periphery of the copper sleeve, and a fan mechanism rotatably supported on the copper sleeve, the fan mechanism comprising a rotating shaft and a fan blade assembly fixed on the rotating shaft, characterized in that: the rotating shaft is supported in the copper sleeve through a bearing assembly, the bearing assembly comprises a plurality of bearings arranged along the axial direction of the rotating shaft, and the number of the bearings is greater than two; the copper sleeve is provided with a movable limiting assembly at each axial end, the movable limiting assembly comprises a plurality of movable limiting blocks arranged at intervals in the circumferential direction of the copper sleeve, the movable limiting blocks are arranged on the inner wall of the copper sleeve and form a limiting step at the inner end to abut against the bearings, and the movable limiting blocks are provided with movable through-slots between the body of the copper sleeve on both sides in the circumferential direction of the copper sleeve; when the bearings enter the copper sleeve through the movable limiting blocks, the movable limiting blocks move to the radial outside of the copper sleeve. The movable limiting assembly comprises two movable limiting blocks arranged on both radial sides of the copper sleeve. The movable limiting blocks are wedge-shaped, and the thickness of the movable limiting blocks gradually increases from the outside to the inside of the copper sleeve. The copper sleeve is provided with a limiting boss near the inner end in the axial direction, there is one bearing between the axial first end of the copper sleeve and the limiting boss, and there are at least two bearings between the axial second end of the copper sleeve and the limiting boss.

2. The easy-to-assemble / disassemble axial fan according to claim 1, characterized in that: The outer rings of two bearings stacked on each other are attracted by a magnetic member.

3. The easy-to-assemble / disassemble axial fan according to claim 2, characterized in that: The magnetic member is in the shape of a ring.

4. The easy-to-assemble / disassemble axial fan according to claim 1, characterized in that: ​ 5. The easy-to-assemble / disassemble axial fan according to claim 4, characterized in that: ​ 6. The easy-to-assemble / disassemble axial fan according to claim 5, characterized in that: ​

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