A fan

Abstract

The utility model relates to fan technical field provides a fan, include: casing, motor and impeller, install motor on the casing, install impeller on the motor, the motor includes stator and rotor, the stator includes stator core, coil and stator cover, the tooth part on stator core is wound coil, the outside cover of stator core has stator cover, the rotor includes pivot, rotor frame and the rotor magnet set up in rotor frame inside, the bottom outer rim of stator cover is set up a plurality of hook parts in circumference, the casing has motor installation unit, the recess is set up in the position corresponding with the hook part of motor installation unit, the hook part is connected with recess. The utility model is through the hook of stator cover hook recess and makes stator cover positioning, prevent stator cover from generating displacement because of thermal expansion, prolong the service life of fan.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a fan. Background Technology

[0002] Currently, fans used for cooling equipment are required to be dustproof and waterproof. Typically, adhesive is injected between connecting parts to improve dustproof and waterproof performance.

[0003] In existing fan structures, the stator cover is directly pressed into the housing, and glue is injected at the joint between the stator cover and the bearing sleeve for fixation after pressing. Due to the different coefficients of expansion of the glue and the stator cover, when the fan temperature rises, the stator cover will bulge and shift, causing interference between the stator cover and the rotor frame, blades, etc., affecting the normal operation of the fan, increasing noise, and reducing the fan's lifespan. Utility Model Content

[0004] This invention primarily addresses the technical problem that in existing fan structures, where the stator cover is directly pressed into the housing and fixed with glue, the stator cover bulges or shifts when the fan temperature rises, affecting the normal operation of the fan. The invention proposes a fan where the stator cover is positioned by hooking a groove with its hook portion, preventing displacement due to thermal expansion and extending the fan's lifespan.

[0005] This utility model provides a fan, including: a housing, a motor, and an impeller; A motor is mounted on the housing; an impeller is mounted on the motor; The motor includes a stator and a rotor; The stator includes a stator core, coils, and a stator cover; the coils are wound around the teeth of the stator core; the stator core is covered by the stator cover. The rotor includes a rotating shaft, a rotor frame, and rotor magnets disposed inside the rotor frame; The stator cover has multiple hooks circumferentially arranged along the bottom outer edge; The housing has a motor mounting part; the motor mounting part has a groove at a position corresponding to the hook part; The hook is connected to the groove.

[0006] Preferably, the inner wall of the stator cover is provided with a stepped portion; The stepped portion is engaged with the upper edge of the stator core.

[0007] Preferably, the number of hooks is at least three.

[0008] Preferably, the hook is located radially inside the motor mounting portion.

[0009] Preferably, the bottom inner side of the stator cover is provided with multiple concave structures.

[0010] Preferably, the inner wall of the stator cover is provided with a plurality of stator cover ribs.

[0011] Preferably, the outer periphery of the motor mounting portion has a housing engaging portion; The groove is formed on the housing engagement part.

[0012] Preferably, an annular rib is provided on the inner side of the housing engagement portion.

[0013] Preferably, a protrusion is provided at the base of the hook; The protrusion abuts against the annular rib.

[0014] Preferably, the annular rib has a recess at the corresponding position of the groove.

[0015] This utility model provides a fan with multiple hooks circumferentially arranged along the bottom outer edge of the stator cover. A groove is provided on the motor mounting part of the casing. The hooks of the stator cover engage with the groove to position the stator cover, preventing displacement due to thermal expansion and extending the fan's service life. A stepped portion is provided on the inner wall of the stator cover; the stepped portion cooperates with the hooks to lock the stator cover in place, preventing displacement. The stepped portion also allows for a smaller motor diameter. Multiple stator cover ribs enhance the strength of the stator cover and also limit the movement of the stator core. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the fan provided by this utility model; Figure 2 This is a schematic diagram of the rear structure of the fan provided by this utility model; Figure 3 This is a schematic diagram of the internal structure of the fan provided by this utility model (with the impeller hidden). Figure 4 This is an axial sectional view of the fan provided by this utility model; Figure 5 This is a schematic diagram of the structure of the housing provided by this utility model; Figure 6 This is a schematic diagram of the stator cover provided by this utility model.

[0017] Reference numerals: 1. Housing; 2. Motor; 3. Impeller; 101. Housing wall; 102. Motor mounting part; 103. Housing rib; 1021. Housing engaging part; 1022. Groove; 1023. Annular rib; 1024. Recess; 201. Shaft; 202. Rotor frame; 203. Stator core; 204. Coil; 205. Stator cover; 206. Rotor magnet; 207. Copper sleeve; 208. Bearing sleeve; 209. Bearing; 2051. Hook; 2052. Stepped part; 2053. Concave structure; 2054. Stator cover rib; 2055. Protrusion. Detailed Implementation

[0018] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0019] like Figure 1-4 As shown in the figure, a fan provided by this utility model embodiment includes: a housing 1, a motor 2, and an impeller 3. The motor 2 is mounted on the housing 1; the impeller 3 is mounted on the motor 2.

[0020] like Figure 5 As shown, the housing 1 has a housing wall portion 101; the motor mounting portion 102 is located in the middle of the housing wall portion 101; a plurality of housing ribs 103 are provided between the motor mounting portion 102 and the housing wall portion 101.

[0021] The motor 2 includes a stator and a rotor. The stator includes a stator core 203, coils 204, and a stator cover 205; the coils 204 are wound around the teeth of the stator core 203; the stator cover 205 covers the outside of the stator core 203. The rotor includes a shaft 201, a rotor frame 202, and rotor magnets 206 disposed inside the rotor frame 202.

[0022] like Figure 6As shown, the stator cover 205 has multiple hooks 2051 arranged circumferentially along its bottom outer edge; the housing 1 has a motor mounting part 102; a motor 2 is mounted on the motor mounting part 102. A groove 1022 is provided at a position corresponding to the hooks 2051 on the motor mounting part 102; the hooks 2051 are connected to the grooves 1022. This invention positions the stator cover 205 by hooking the hooks 2051 onto the grooves 1022, preventing displacement due to thermal expansion. The number of hooks 2051 is at least three, ensuring stable positioning. The hooks 2051 are located radially inside the motor mounting part 102 to prevent collisions with external equipment.

[0023] The inner wall of the stator cover 205 is provided with a stepped portion 2052; the stepped portion 2052 is engaged with the upper edge of the stator core 203. The stepped portion 2052 cooperates with the hook portion 2051 to lock the stator cover 205 and prevent displacement; the stepped portion 2052 enables the diameter of the motor 2 to be miniaturized.

[0024] The stator cover 205 has multiple recessed structures 2053 on its bottom inner side to provide space for accommodating electronic components with high axial dimensions.

[0025] The inner wall of the stator cover 205 is uniformly provided with a plurality of stator cover ribs 2054. The provision of a plurality of stator cover ribs 2054 can enhance the strength of the stator cover 205 and also limit the movement of the stator core 203.

[0026] The outer periphery of the motor mounting part 102 has a housing engaging part 1021; the groove 1022 is formed on the housing engaging part 1021.

[0027] An annular rib 1023 is provided on the inner side of the housing engagement portion 1021. A protrusion 2055 is provided at the root of the hook portion 2051; the protrusion 2055 abuts against the annular rib 1023, and the protrusion 2055 and the annular rib 1023 are securely engaged.

[0028] The annular rib 1023 has a recess 1024 at the corresponding position of the groove 1022. The recess 1024 enables the annular rib 1023 to be firmly engaged with the protrusion 2055 and is easy to position.

[0029] The stator also includes a bearing sleeve 208; the stator core 203 and the stator cover 205 are installed on the outer periphery of the bearing sleeve 208; a bearing 209 is provided inside the bearing sleeve 208. A copper sleeve 207 is provided at the end of the rotating shaft 201; the rotating shaft 201 is connected to the rotor frame 202 through the copper sleeve 207.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fan, comprising: Casing (1), motor (2) and impeller (3); A motor (2) is mounted on the housing (1); an impeller (3) is mounted on the motor (2); The motor (2) includes a stator and a rotor; The stator includes a stator core (203), a coil (204), and a stator cover (205); the coil (204) is wound around the teeth of the stator core (203); the stator core (203) is covered by the stator cover (205). The rotor includes a rotating shaft (201), a rotor frame (202), and a rotor magnet (206) disposed inside the rotor frame (202). Its features are: The stator cover (205) is provided with a plurality of hooks (2051) circumferentially along the bottom outer edge. The housing (1) has a motor mounting part (102); the motor mounting part (102) is provided with a groove (1022) at a position corresponding to the hook part (2051); The hook (2051) is connected to the groove (1022).

2. The fan according to claim 1, characterized in that, The inner wall of the stator cover (205) is provided with a stepped portion (2052); The stepped portion (2052) is engaged with the upper edge of the stator core (203).

3. The fan according to claim 1, characterized in that, The number of hooks (2051) is at least three.

4. The fan according to claim 1, characterized in that, The hook (2051) is located radially inside the motor mounting part (102).

5. The fan according to claim 1, characterized in that, The bottom inner side of the stator cover (205) is provided with multiple recessed structures (2053).

6. The fan according to claim 1, characterized in that, The inner wall of the stator cover (205) is uniformly provided with multiple stator cover ribs (2054).

7. The fan according to claim 1, characterized in that, The outer periphery of the motor mounting part (102) has a housing engaging part (1021). The groove (1022) is formed on the housing engagement part (1021).

8. The fan according to claim 7, characterized in that, The inner side of the housing engagement part (1021) is provided with an annular rib (1023).

9. The fan according to claim 8, characterized in that, The hook (2051) has a protrusion (2055) at its root. The protrusion (2055) abuts against the annular rib (1023).

10. The fan according to claim 8, characterized in that, The annular rib (1023) has a recess (1024) at the corresponding position of the groove (1022).

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