Heat dissipation type fan

Abstract

The utility model relates to the technical field of fans, in particular to a heat dissipation type fan. Comprising a shell, fan blades and a motor. The shell comprises an inner shell, the inner shell is fixedly connected with the fan blades, a motor is further arranged on the inner shell, and the motor is used for driving the inner shell and the fan blades to rotate; a motor is arranged in the inner shell, a shaft core, a bearing and a shaft sleeve are arranged on the motor, a mounting shell is mounted in the inner shell, a bearing is mounted in the mounting shell, the bearing is in transmission connection with the shaft core, the shaft sleeve is mounted at one end of the shaft core, and one end of the shaft core and one end of the shaft sleeve are exposed out of the outer surface of the inner shell; compared with the prior art, one end of the shaft core and one end of the shaft sleeve are exposed out of the outer surface of the inner shell, so that heat generated by rotating friction of the shaft core and the bearing can be transmitted to the shaft sleeve through the shaft core and then discharged outwards through the shaft core and the shaft sleeve, the heat dissipation performance of the fan is greatly improved, and the service life of the shaft core and the service life of the bearing are prolonged.

Description

Technical Field

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

[0002] The existing common fan is generally composed of a housing, fan blades and a motor. The general structure of the motor is a stator, a rotor, a shaft core and a bearing. The shaft core and the bearing are generally installed inside the housing and will not be exposed. The shaft core and the bearing play a role of fixing and supporting. The housing is generally made of plastic. The shaft core and the bearing generate a certain amount of heat when rotating at high speed. The shaft core and the bearing are sealed and installed. If the heat can only be dissipated through the housing, the heat dissipation effect is poor, resulting in a reduced service life of the shaft core.

[0003] Based on the above problems, we propose a heat dissipation fan. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a heat dissipation fan, which can effectively solve the problems raised in the above-mentioned background technology through structural improvement.

[0005] The technical solution of the utility model is:

[0006] A heat dissipation fan comprises a housing, fan blades and a motor;

[0007] The fan blades and the motor are respectively arranged inside the housing;

[0008] The housing comprises an inner housing, the inner housing is fixedly connected to the fan blades, and a motor is also arranged on the inner housing, and the motor is used to drive the inner housing and the fan blades to rotate;

[0009] The motor is provided with a shaft core, a bearing and a sleeve, the inner shell is installed with a mounting shell, the mounting shell is installed with a bearing, the bearing is transmission-connected with the shaft core, one end of the shaft core is installed with a sleeve, and one end of the shaft core and the sleeve are exposed on the outer surface of the inner shell.

[0010] Furthermore, the shaft sleeve is provided with a double-layer structure, and the outer side of the shaft sleeve is an external gear structure; the shaft core and the shaft sleeve are fixed by riveting.

[0011] Furthermore, an internal gear structure is provided on the inner wall of the inner shell corresponding to the shaft sleeve, for being engaged and fixed with the shaft sleeve of the external gear structure.

[0012] Furthermore, the housing also includes an outer shell, and the outer shell is fixedly connected to the inner shell via a bracket.

[0013] Furthermore, the material of the shaft sleeve is pure copper, and the material of the shaft core is stainless steel.

[0014] Furthermore, the ends of the shaft sleeve and the shaft core are arranged flush with the end surface of the inner shell.

[0015] Furthermore, the motor also includes a stator and a rotor, the stator is fixedly connected to the mounting shell, the stator and the rotor are pivotally connected, and the other end of the rotor is fixedly connected to the inner shell.

[0016] The beneficial effects of the utility model are:

[0017] Compared with the prior art, the utility model exposes one end of the shaft core and the shaft sleeve on the outer surface of the inner shell, so that the heat generated by the rotation friction of the shaft core and the bearing can be transmitted to the shaft sleeve through the shaft core, and then discharged outward through the shaft core and the shaft sleeve, thereby greatly enhancing the heat dissipation performance of the fan and extending the service life of the shaft core and the bearing; in addition, the shaft sleeve and the mounting shell are connected by a gearing, which can effectively prevent the shaft sleeve and the inner shell from wearing and slipping when the fan is used for a long time, thereby greatly improving the use quality of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal installation of the inner shell of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal gear structure of the inner shell of the utility model.

[0022] In the figure, 1, shell; 2, fan blades; 3, motor; 4, inner shell; 5, shaft core; 6, bearing; 7, sleeve; 8, outer gear; 9, inner gear; 10, stator; 11, rotor; 12, outer shell; 13, bracket; 14, installation shell. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0024] like Figure 1-4 As shown,

[0025] A heat dissipation fan, comprising a housing 1, blades 2 and a motor 3; the blades 2 and the motor 3 are respectively arranged inside the housing 1; the housing 1 comprises an inner housing 4 and an outer housing 12, the inner housing 4 and the outer housing 12 are fixedly connected by a bracket 13 and the inner housing 4 is located at the inner center of the outer housing 12, the inner housing 4 and the blades 2 are an integrally formed structure, a cavity is arranged inside the inner housing 4, a motor 3 is installed inside the cavity, and the motor 3 is used to drive the inner housing 4 and the blades 2 to rotate; the motor 3 is provided with a shaft core 5, a bearing 6 and a sleeve 7, the inner housing 4 ... An installation shell 14 is installed, and a bearing 6 is installed inside the installation shell 14. The bearing 6 is transmission-connected to a shaft core 5. A shaft sleeve 7 is installed at one end of the shaft core 5. One end of the shaft core 5 and the shaft sleeve 7 are exposed on the outer surface of the inner shell 4. In the present embodiment, exposing one end of the shaft core 5 and the shaft sleeve 7 on the surface of the inner shell 4 enables one end of the shaft core 5 and the shaft sleeve 7 to be directly in contact with the environment, and the heat generated by the rotation of the shaft core 5 and the bearing 6 can be continuously discharged, and the heat dissipation efficiency will be greatly improved, thereby preventing the accumulation of heat inside the shaft core 5 and causing a reduction in its service life.

[0026] As a preferred embodiment; the shaft sleeve 7 is a double-layer structure, and the outer side of the shaft sleeve 7 is an external gear 8 structure; the shaft core 5 is fixed to the shaft sleeve 7 by riveting; the inner wall of the inner shell 4 and the corresponding shaft sleeve 7 are provided with an internal gear 9 structure, which is used to mesh and fix with the shaft sleeve 7 of the external gear 8 structure. The purpose of this design is that the shaft core 5 is connected to the shaft sleeve 7. When not in operation, wear will continue to occur between the shaft core 5 and the shaft sleeve 7. Once the wear is serious and cannot be effectively fixed, the fan will be in a fault state, thereby greatly reducing the service life of the fan. Therefore, the use of this structure for connection and installation, and the double meshing structure, can greatly improve the stability and firmness of the connection, and it is not easy to be worn through and slip after long-term use.

[0027] As a preferred embodiment; the material of the shaft sleeve 7 is pure copper, and the material of the shaft core 5 is stainless steel; by adopting stainless steel, the working strength of the shaft core 5 can be greatly improved, and it has good wear resistance and high hardness, and can be used for a long time; at the same time, it also has good thermal conductivity, and can continuously transfer the generated heat to the shaft sleeve 7; in addition, the shaft sleeve 7 is made of pure copper, which has a better heat dissipation effect, and can achieve rapid heat dissipation together with the shaft core 5 (the shaft sleeve 7 greatly increases the heat dissipation area).

[0028] As a preferred embodiment, the ends of the sleeve 7 and the shaft core 5 are arranged flush with the end surface of the inner shell 4; the purpose of this design is that since the shaft core 5 is partially exposed, its flush arrangement can ensure its appearance and at the same time, it is not easily affected by collision.

[0029] As a preferred embodiment; the motor 3 also includes a stator 10 and a rotor 11, the stator 10 is fixedly connected to the mounting shell 14, the stator 10 and the rotor 11 are pivotally connected, and the other end of the rotor 11 is fixedly connected to the inner shell 4; this part of the structure is a common structure of an ordinary motor, in order to further clearly illustrate the structural principle of the present application, it is fully described.

[0030] It should be pointed out that the main problems in the prior art are: the shaft core and the bearing generate a certain amount of heat when rotating at high speed, and the shaft core and the bearing are sealed. If the heat can only be dissipated through the shell, the heat dissipation effect is poor, resulting in a reduced service life of the shaft core;

[0031] Therefore, after the improvement of the present application, by exposing one end of the shaft core 5 and the shaft sleeve 7 to the outer surface of the inner shell 4, it is convenient to discharge heat outward through the shaft core 5 and the shaft sleeve 7, and the heat dissipation area is large, thereby greatly enhancing the heat dissipation performance of the fan and extending the service life of the shaft core 5 and the bearing 6.

[0032] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A heat dissipation fan, Features: It includes a housing, fan blades and a motor; The fan blades and the motor are respectively arranged inside the housing; The housing comprises an inner housing, the inner housing is fixedly connected to the fan blades, and a motor is also arranged on the inner housing, and the motor is used to drive the inner housing and the fan blades to rotate; The motor is provided with a shaft core, a bearing and a sleeve, the inner shell is installed with a mounting shell, the mounting shell is installed with a bearing, the bearing is transmission-connected with the shaft core, one end of the shaft core is installed with a sleeve, and one end of the shaft core and the sleeve are exposed on the outer surface of the inner shell.

2. A heat dissipation fan according to claim 1, Features: The shaft sleeve is a double-layer structure, and the outer side of the shaft sleeve is an external gear structure; the shaft core and the shaft sleeve are fixed by riveting.

3. A heat dissipation fan according to claim 2, Features: An internal gear structure is arranged on the inner wall of the inner shell corresponding to the shaft sleeve, and is used for engaging and fixing with the shaft sleeve of the external gear structure.

4. A heat dissipation fan according to claim 3, Features: The housing also includes an outer shell, which is fixedly connected to the inner shell via a bracket.

5. A heat dissipation fan according to claim 4, Features: The material of the shaft sleeve is pure copper, and the material of the shaft core is stainless steel.

6. A heat dissipation fan according to claim 5, Features: The ends of the shaft sleeve and the shaft core are arranged flush with the end surface of the inner shell.

7. A heat dissipation fan according to claim 6, Features: The motor further comprises a stator and a rotor, wherein the stator is fixedly connected to the mounting housing, the stator and the rotor are pivotally connected, and the other end of the rotor is fixedly connected to the inner housing.

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