A fan

Abstract

The present invention relates to the technical field of mechanical industry, and is a fan, comprising a shell, a stator assembly, a rotor assembly, a controller assembly, a first end cover, a second end cover, a bearing, a shaft sleeve, a first elastic retaining ring, a second elastic retaining ring and a spring assembly, wherein the shell comprises a first shell, a second shell and a guide vane which are connected in an integral manner, the first shell and the second shell are coaxially arranged, the head section of the second shell is located in the cavity of the first shell, and the tail section extends to the outside of the first shell, one end of the guide vane is connected to the inner circumferential surface of the first shell, and the other end is connected to the outer circumferential surface of the second shell, the guide vane is used to increase the air volume and air pressure of the fan, the controller assembly is bonded and fixed to the second shell, the end of the head section of the second shell is interference-connected with a shaft sleeve, a round key for circumferential anti-rotation is fixed between the second shell and the shaft sleeve, and the first end cover is threadedly connected to the shaft sleeve, and the present invention has the advantages of reasonable structure and easy disassembly and assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical industry, and in particular to a fan. Background Art

[0002] With the rapid development of electronic technology, fan products are more and more widely used, and the functions that fans can achieve are becoming more and more complex. However, due to the limitation of fan size, the structural design of fan products is particularly important. The reliability, maintainability and environmental adaptability of the fan should be considered in the design process. At the same time, the sealing of the bearing chamber is also an important factor to be considered for the fan. Therefore, a fan with good bearing chamber sealing performance, reasonable structure and easy disassembly and assembly is urgently needed. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a fan which has the advantages of reasonable structure and convenient disassembly and assembly.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a fan, including a shell, a stator assembly, a rotor assembly, a controller assembly, a first end cover, a second end cover, a bearing, a sleeve, a first elastic retaining ring, a second elastic retaining ring and a spring assembly, the shell includes a first shell, a second shell and a guide vane connected in an integral manner, the first shell and the second shell are coaxially arranged, the head section of the second shell is located in the cavity of the first shell, and the tail section extends to the outside of the first shell, one end of the guide vane is connected to the inner circumference of the first shell, and the other end is connected to the outer circumference of the second shell, the guide vane is used to increase the air volume and air pressure of the fan, the controller assembly is bonded and fixed to the second shell, and the second shell A shaft sleeve is interference-connected at the end of the head section, a circular key for circumferential anti-rotation is fixed between the second shell and the shaft sleeve, a first end cover is threadedly connected to the shaft sleeve, and a thread locking glue is also applied at the threaded connection between the first end cover and the shaft sleeve, the rotor assembly comprises a rotating shaft, a rotor sleeve and fan blades, a rotating shaft is installed in the shaft sleeve, a nut, a first elastic retaining ring, a gasket, a bearing, a second elastic retaining ring, a spring assembly, a bearing, a gasket and fan blades are sequentially installed on the rotating shaft along the axial direction, the nut and the first elastic retaining ring are fixed to the shaft end, the outer circumferential surface of the bearing is connected with a small clearance of the shaft sleeve, the inner diameter of the bearing is connected with a small clearance of the rotating shaft, a stator assembly is fixed on the outer circumferential surface of the sleeve, and a second end cover is fixed to the end of the tail section of the second shell.

[0005] Preferably, the controller component includes a first circuit board, a second circuit board and a pin header, the first circuit board and the second circuit board are connected by the pin header, the first circuit board is arranged in parallel above the second circuit board, and a Hall element extending in a vertical direction is provided on the top surface of the first circuit board, the Hall element is used to sense the magnetic field strength, and the outer diameter of the second circuit board is larger than the outer diameter of the first circuit board.

[0006] Preferably, the rotor sleeve body is in the shape of a hollow cylinder, the rotor sleeve head section is provided with an opening and an annular groove, the fan blades are provided with a convex ring matching the annular groove and a clamping block matching the opening, the fan blades and the rotor sleeve are fixed by inlay die-casting, the clamping block is fixed in the opening, and the convex ring is fixed in the annular groove.

[0007] Preferably, the spring assembly comprises a spring and a spring sleeve, and the spring sleeve is used to limit the relative position of the spring and the rotating shaft.

[0008] Preferably, the second end cover is fixedly connected to the second shell by screws.

[0009] Preferably, the surface of the stator assembly is covered with potting glue.

[0010] Preferably, the surface of the controller component is covered with potting glue.

[0011] Preferably, an adjustment gasket is provided between the first elastic retaining ring and the bearing.

[0012] The beneficial effects of using the present invention are as follows: the fan has a double end cover and double protection design, which plays the role of sealing the fan bearing chamber; the reliability of axial fixation of the rotating shaft is improved by using a first elastic retaining ring in combination with a gasket and a double fixation method using a nut, and the circumferential anti-rotation function of the sleeve and the housing is enhanced by setting a circular key; and the fan is easy to disassemble and maintain by setting a second housing for placing a controller component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0015] Figure 3 is a schematic diagram of the structure of the rotor sleeve;

[0016] Figure 4 is a schematic diagram of the structure of the controller component;

[0017] Reference numerals include:

[0018] 101-first shell, 102-second shell, 103-guide vane, 2-rotating shaft, 3-rotor sleeve, 31-opening, 32-ring groove, 4-fan blade, 501-first circuit board, 502-second circuit board, 6-first end cover, 7-second end cover, 8-shaft sleeve, 9-bearing, 10-first elastic retaining ring, 11-second elastic retaining ring, 12-spring, 13-spring sleeve, 14-nut, 15-gasket, 16-round key. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-4 As shown, a fan comprises a housing, a stator assembly, a rotor assembly, a controller assembly, a first end cover 6, a second end cover 7, a bearing 9, a sleeve 8, a first elastic retaining ring 10, a second elastic retaining ring 11 and a spring assembly, wherein the housing comprises a first housing 101, a second housing 102 and a guide vane 103 which are integrally connected, the first housing 101 and the second housing 102 are coaxially arranged, the head section of the second housing 102 is located in the cavity of the first housing 101, and the tail section extends to the outside of the first housing 101, one end of the guide vane 103 is connected to the inner circumference of the first housing 101, and the other end is connected to the outer circumference of the second housing 102, the guide vane 103 is used to increase the air volume and air pressure of the fan, the controller assembly is bonded and fixed to the second housing 102, and the end of the head section of the second housing 102 is connected to the outer circumference of the second housing 102. A shaft sleeve 8 is connected in an interlocking manner, and a round key 16 for circumferential anti-rotation is fixed between the second housing 102 and the shaft sleeve 8. A first end cover 6 is threadedly connected to the shaft sleeve 8, and a thread locking glue is also applied at the threaded connection between the first end cover 6 and the shaft sleeve 8. The rotor assembly includes a rotating shaft 2, a rotor sleeve 3 and a fan blade 4. The rotating shaft 2 is installed in the shaft sleeve 8, and a nut 14, a first elastic retaining ring 10, a gasket 15, a bearing 9, a second elastic retaining ring 11, a spring assembly, a bearing 9, a gasket 15 and a fan blade 4 are sequentially installed on the rotating shaft 2 along the axial direction. The nut 14 and the first elastic retaining ring 10 are fixed to the shaft end, the outer circumferential surface of the bearing 9 is connected with a small gap in a fitting manner with the shaft sleeve 8, and the inner diameter of the bearing 9 is connected with a small gap in a fitting manner with the rotating shaft 2. A stator assembly is fixed on the outer circumferential surface of the shaft sleeve 8, and a second end cover 7 is fixed to the end of the tail section of the second housing 102.

[0021] The stator assembly is pressed together with the housing through a 16-round key to prevent the stator assembly from rotating radially, and the first end cover 6 with a thread is screwed together with the shaft sleeve 8 to prevent the stator assembly from axially escaping from the housing; the end of the rotor assembly, i.e., the rotating shaft 2, is fixed by a gasket 15, a first elastic retaining ring 10 and a nut 14, and the first elastic retaining ring 10 and the nut 14 provide double protection to prevent the rotor assembly from axially escaping;

[0022] The controller component includes a first circuit board 501, a second circuit board 502 and a pin header. The first circuit board 501 and the second circuit board 502 are connected by the pin header. The first circuit board 501 is arranged in parallel above the second circuit board 502. A Hall element extending in a vertical direction is provided on the top surface of the first circuit board 501. The Hall element is used to sense the magnetic field strength. The outer diameter of the second circuit board 502 is greater than the outer diameter of the first circuit board 501.

[0023] The main body of the rotor sleeve 3 is in a hollow cylindrical shape, and an opening 31 and an annular groove 32 are provided on the head section of the rotor sleeve 3. A convex ring matching the annular groove 32 and a clamping block matching the opening 31 are provided on the fan blade 4. The fan blade 4 and the rotor sleeve 3 are fixed by inlay die-casting, the clamping block is fixed in the opening 31, and the convex ring is fixed in the annular groove 32.

[0024] The spring assembly includes a spring 12 and a spring sleeve 13. The spring sleeve 13 is used to limit the relative position of the spring 12 and the rotating shaft 2. The spring 12 and the gasket 15 play a role in adjusting the axial clearance of the fan.

[0025] The second end cover 7 is fixedly connected to the second housing 102 by screws. The second end cover 7 is fixed to the housing by four screws. The double end cover is provided to increase the airtightness of the control cabin formed inside the second housing 102 and the bearing chamber formed inside the shaft sleeve 8.

[0026] The surface of the stator assembly is covered with potting glue. The whole is potted to protect the stator core and windings, and improve the protection capabilities against salt spray, moisture and heat, mildew and IP level.

[0027] The surface of the controller component is covered with potting glue. The whole is potted to protect the controller component and improve the protection capabilities against salt spray, moisture and heat, mildew and IP level.

[0028] An adjusting gasket 15 is provided between the first elastic retaining ring 10 and the bearing 9 .

[0029] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A fan, characterized in that: The invention comprises a housing, a stator assembly, a rotor assembly, a controller assembly, a first end cover (6), a second end cover (7), a bearing (9), a shaft sleeve (8), a first elastic retaining ring (10), a second elastic retaining ring (11) and a spring assembly. The housing comprises a first housing (101), a second housing (102) and a guide vane (103) which are connected in an integral manner. The first housing (101) and the second housing (102) are coaxially arranged. The head section of the second housing (102) is located in the cavity of the first housing (101), and the tail section extends to the outside of the first housing (101). One end of the guide vane (103) is connected to the inner circumference of the first housing (101), and the other end is connected to the outer circumference of the second housing (102). The guide vane (103) is used to increase the air volume and air pressure of the fan. The controller assembly is bonded and fixed to the second housing (102). The end of the head section of the second housing (102) is interference-connected with the shaft sleeve (8). A circular key (16) for circumferential anti-rotation is fixed between the shaft sleeve (102) and the shaft sleeve (8); a first end cover (6) is threadedly connected to the shaft sleeve (8); a thread locking glue is also applied to the threaded connection between the first end cover (6) and the shaft sleeve (8); the rotor assembly comprises a rotating shaft (2), a rotor sleeve (3) and a fan blade (4); a rotating shaft (2) is installed in the shaft sleeve (8); a nut (14), a first elastic retaining ring (10), a gasket are sequentially installed on the rotating shaft (2) along the axial direction (15), a bearing (9), a second elastic retaining ring (11), a spring assembly, a bearing (9), a gasket (15) and a fan blade (4), the nut (14) and the first elastic retaining ring (10) are fixed to the shaft end, the outer peripheral surface of the bearing (9) is connected with the shaft sleeve (8) with a small clearance, the inner diameter of the bearing (9) is connected with the rotating shaft (2) with a small clearance, the stator assembly is fixed on the outer peripheral surface of the shaft sleeve (8), and the second end cover (7) is fixed to the end of the tail section of the second housing (102); The rotor sleeve (3) has a hollow cylindrical body, an opening (31) and an annular groove (32) are provided on the head section of the rotor sleeve (3), a convex ring matching the annular groove (32) and a clamping block matching the opening (31) are provided on the fan blade (4), the fan blade (4) and the rotor sleeve (3) are fixed by inlay die casting, the clamping block is fixed in the opening (31), and the convex ring is fixed in the annular groove (32); An adjustment gasket (15) is provided between the first elastic retaining ring (10) and the bearing (9).

2. The fan according to claim 1, characterized in that: The controller component comprises a first circuit board (501), a second circuit board (502) and a pin header, wherein the first circuit board (501) and the second circuit board (502) are connected via the pin header, the first circuit board (501) is arranged in parallel above the second circuit board (502), a vertically extending Hall element is provided on the top surface of the first circuit board (501), and the Hall element is used to sense the magnetic field strength, and the outer diameter of the second circuit board (502) is greater than the outer diameter of the first circuit board (501).

3. The fan according to claim 1, characterized in that: The spring assembly comprises a spring (12) and a spring sleeve (13), wherein the spring sleeve (13) is used to limit the relative position of the spring (12) and the rotating shaft (2).

4. The fan according to claim 1, characterized in that: The second end cover (7) is fixedly connected to the second shell (102) by means of screws.

5. The fan according to claim 1, characterized in that: The surface of the stator assembly is covered with potting glue.

6. The fan according to claim 1, characterized in that: The surface of the controller component is covered with potting glue.

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