Fan

Abstract

The utility model relates to the technical field of fans, and provides a fan which comprises a machine shell and a motor installed in the machine shell. A motor holding part is arranged in the center of the shell; the periphery of the motor holding part is provided with a wall part; a plurality of grooves are uniformly formed in the circumferential direction of the wall part; the motor is provided with a stator and a rotor; the stator comprises a stator core and a cover part. The cover part covers the stator core, and a plurality of buckles are uniformly arranged on the periphery of the bottom end of the cover part; and the buckles are clamped in the corresponding grooves. According to the utility model, the cover part can hook the motor holding part of the shell, so that the cover part cannot move upwards, the cover part is effectively prevented from moving upwards due to expansion of high-temperature glue, and the waterproof performance of the fan is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan. Background Art

[0002] For a fan used on an outdoor device, the stator part needs to be sealed to achieve the waterproof effect of the fan. Specifically, a cover component is arranged on the outer periphery of the stator part, and the cover component and the fan housing cooperate to form a sealed space. Waterproof glue is injected into the sealed space so that the stator part is integrally wrapped in the sealant to achieve the waterproof effect. The outer periphery of the bottom of the cover component and the inner periphery of the bottom of the housing are fixed by bonding or other means to form a sealed space.

[0003] However, in the actual use environment, the glue injected inside the cover component will expand due to the increase in ambient temperature. The expanded glue will cause the cover component to float, reducing the sealing effect and affecting the overall waterproof performance of the fan. In addition, when a larger expansion deformation occurs, the floating of the cover component will come into contact with the rotor part, which will affect the rotation of the fan. Summary of the Utility Model

[0004] The utility model mainly solves the technical problem that the fan cover component in the prior art is prone to floating, reducing the sealing effect and affecting the overall waterproof performance of the fan, and proposes a fan in which the cover component can hook the motor holding part of the housing, so that the cover component cannot be displaced upward, effectively preventing the cover component from being displaced upward due to the expansion of the high-temperature glue, and ensuring the waterproof performance of the fan.

[0005] The utility model provides a fan, including: a housing and a motor installed in the housing;

[0006] A motor holding part is arranged at the center of the housing; a wall part is provided on the outer periphery of the motor holding part; a plurality of grooves are evenly formed in the circumferential direction of the wall part;

[0007] The motor has a stator and a rotor;

[0008] The stator includes: a stator core and a cover component; the cover component covers the outside of the stator core, and a plurality of buckles are evenly arranged on the outer periphery of the bottom end of the cover component;

[0009] The buckles are snapped into the corresponding grooves.

[0010] Preferably, insulating parts cover the upper and lower parts of the stator core.

[0011] Preferably, the cover component has a cylindrical part and an axial end part. The inner peripheral surface of the cylindrical part is fixed on the radial outer side of the stator core, the axial end part covers one axial end of the stator core, and the axial end part has a through hole located at the radial center.

[0012] Preferably, the bottom end of the cylindrical part has an extension part;

[0013] A plurality of buckles are distributed on the outer periphery of the extension part.

[0014] Preferably, a step part is arranged on the upper part of the inner side of the wall part;

[0015] The edge of the extension part is placed on the step part.

[0016] Preferably, a bearing holding part is arranged at the center of the motor holding part;

[0017] The bearing holding part passes through the through hole.

[0018] Preferably, the outer side of the machine shell has a fan outer frame;

[0019] A plurality of rib parts are evenly distributed between the fan outer frame and the motor holding part.

[0020] Preferably, the rotor includes: a rotor frame and rotor magnets;

[0021] The rotor frame is movably arranged on the outer side of the cover part, rotor magnets are arranged on the inner side in the circumferential direction of the rotor frame, and the rotor magnets are located on the outer side in the circumferential direction of the cover part.

[0022] Preferably, the motor further has a rotating shaft; the rotating shaft is supported by a bearing installed in the bearing holding part to be rotatable.

[0023] Preferably, it further includes: an impeller arranged on the motor;

[0024] The impeller has a cup part and a plurality of blades evenly distributed on the outer periphery of the cup part;

[0025] The cup part covers the outer side of the rotor frame.

[0026] A fan provided by the present utility model can, by arranging buckles and opening a groove in the motor holding part of the machine shell, snap the buckles into the groove. Through the buckle snap connection structure, the cover part can hook the motor holding part of the machine shell, preventing the cover part from shifting upward, effectively preventing the cover part from shifting upward due to the expansion of high-temperature glue, ensuring the sealing performance of the motor, guaranteeing the waterproof performance of the fan, improving the stability of the fan, and prolonging the service life of the fan. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the fan provided by the present utility model (hiding the impeller);

[0028] Figure 2 is a schematic structural diagram of the machine shell provided by the present utility model;

[0029] Figure 3It is a schematic internal structure diagram of the motor provided by the present utility model;

[0030] Figure 4 It is a schematic structure diagram of the cover component provided by the present utility model Figure 1 ;

[0031] Figure 5 It is a schematic structure diagram of the cover component provided by the present utility model Figure 2 ;

[0032] Figure 6 It is a schematic structure diagram of the impeller provided by the present utility model.

[0033] Reference numerals: 1, housing; 2, motor; 3, impeller; 101, fan outer frame; 102, motor holding part; 103, bearing holding part; 104, wall part; 105, rib part; 106, step part; 107, groove; 201, cover component; 202, stator core; 203, circuit board; 204, insulating part; 2011, cylindrical part; 2012, axial end; 2013, through hole; 2014, extension part; 2015, buckle; 301, cup part; 302, blade. Detailed implementation manners

[0034] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all the content.

[0035] As Figure 1 shown, a fan provided by an embodiment of the present utility model includes: a housing 1, a motor 2 installed in the housing 1, and an impeller 3 provided on the motor 2.

[0036] As Figure 2 shown, a motor holding part 102 is provided at the center of the housing 1; a wall part 104 is provided on the outer periphery of the motor holding part 102; a plurality of grooves 107 are evenly formed in the circumferential direction of the wall part 104. A step part 106 is provided at the upper part of the inner side of the wall part 104. A bearing holding part 103 is provided at the center of the motor holding part 102. A fan outer frame 101 is provided on the outer side of the housing 1; a plurality of rib parts 105 are evenly distributed between the fan outer frame 101 and the motor holding part 102.

[0037] As Figure 3As shown, the motor 2 has a stator and a rotor; the stator includes: a stator core 202 and a cover member 201; insulating members 204 cover the upper and lower parts of the stator core 202. The insulating members 204 are fixed to the outer periphery of the bearing holding portion 103. A plurality of tooth portions are evenly distributed on the radially outer side of the stator core 202, and arc-shaped tooth ends are provided on the outer sides of the tooth portions. The insulating members 204 cover the upper and lower parts of the stator core 204, and do not cover the arc-shaped outer walls of the tooth ends. The insulating members 204 are wound with coils at the positions on the tooth portions.

[0038] As Figures 4-5 shown, the cover member 201 has a cylindrical portion 2011 and an axial end portion 2012. The inner peripheral surface of the cylindrical portion 2011 is fixed to the radially outer side of the stator core 202, and the axial end portion 2012 covers one axial end of the stator core 202. The axial end portion 2012 has a through hole 2013 located at the radial center. The bearing holding portion 103 passes through the through hole 2013.

[0039] The cover member 201 covers the outside of the stator core 202. A plurality of buckles 2015 are evenly provided on the outer periphery of the bottom end of the cover member 201; the buckles 2015 are snap-fitted into corresponding grooves 107. The bottom end of the cylindrical portion 2011 has an extension portion 2014; a plurality of buckles 2015 are distributed on the outer periphery of the extension portion 2014. The edge of the extension portion 2014 is placed on the step portion 106. The cooperation between the extension portion 2014 and the step portion 106 can make the installation of the cover member 201 stable. After the cover member 201 and the groove 107 of the machine housing 1 are press-fitted in place with interference, the buckles 2015 hook the machine housing 1, so that the cover member 201 cannot move upward.

[0040] The rotor includes: a rotor frame and rotor magnets; the rotor frame is movably arranged outside the cover member 201, and rotor magnets are arranged on the inner circumference in the circumferential direction of the rotor frame. The rotor magnets are located on the outer circumference in the circumferential direction of the cover member 201. The motor 2 also has a rotating shaft; the rotating shaft is supported by bearings installed in the bearing holding portion 103 to be rotatable. The rotating shaft can drive the rotor frame and the rotor magnets to rotate. The rotor frame is connected to the impeller, and thus drives the impeller 3 to rotate.

[0041] As Figure 6 shown, the impeller 3 has a cup portion 301 and a plurality of blades 302 evenly distributed on the outer periphery of the cup portion 301; the cup portion 301 covers the outside of the rotor frame.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: modifying the technical solutions recorded in the foregoing embodiments, or equivalently replacing some or all of the technical features therein, does not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan, comprising: A housing (1) and a motor (2) installed in the housing (1), characterized in that: A motor holding portion (102) is provided at the center of the housing (1); the outer periphery of the motor holding portion (102) has a wall portion (104); a plurality of grooves (107) are evenly arranged in the circumference of the wall portion (104); The motor (2) comprises a stator and a rotor; The stator comprises: a stator core (202) and a cover component (201); the cover component (201) is arranged outside the stator core (202), and a plurality of buckles (2015) are evenly arranged on the outer periphery of the bottom end of the cover component (201); The buckle (2015) is snapped into the corresponding groove (107).

2. The fan according to claim 1, characterized in that The stator core (202) is covered with insulating members (204) at the top and bottom.

3. The fan according to claim 2, characterized in that: The cover component (201) has a cylindrical portion (2011) and an axial end portion (2012), wherein the inner circumferential surface of the cylindrical portion (2011) is fixed to the radial outer side of the stator core (202), and the axial end portion (2012) covers one axial end of the stator core (202), and the axial end portion (2012) has a through hole (2013) located at the radial center.

4. The fan according to claim 3, characterized in that: The bottom end of the cylindrical portion (2011) has an extension portion (2014); A plurality of buckles (2015) are distributed on the periphery of the extension portion (2014).

5. The fan according to claim 4, characterized in that: A step portion (106) is provided on the inner upper portion of the wall portion (104); The edge of the extension portion (2014) is placed on the step portion (106).

6. The fan according to claim 3, characterized in that: A bearing holding portion (103) is provided at the center of the motor holding portion (102); The bearing retaining portion (103) passes through the through hole (2013).

7. The fan according to claim 1, characterized in that: The outer side of the casing (1) is provided with a fan outer frame (101); A plurality of ribs (105) are evenly distributed between the fan outer frame (101) and the motor retaining portion (102).

8. The fan according to claim 1, characterized in that The rotor comprises: a rotor frame and a rotor magnet; The rotor frame is movably arranged on the outside of the cover component (201), a rotor magnet is arranged on the circumferential inner side of the rotor frame, and the rotor magnet is located on the circumferential outer side of the cover component (201).

9. The fan according to claim 8, characterized in that The motor (2) also has a rotating shaft; the rotating shaft is rotatably supported by a bearing installed in a bearing retaining portion (103).

10. The fan according to claim 9, characterized in that Also includes: An impeller (3) disposed on the motor (2); The impeller (3) comprises a cup portion (301) and a plurality of blades (302) evenly distributed on the periphery of the cup portion (301); The cup portion (301) is arranged on the outside of the rotor frame.

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