CN219220775U

CN219220775U - Oil leakage prevention structure and heat radiation fan

Info

Publication number: CN219220775U
Application number: CN202320245296.8U
Authority: CN
Inventors: 林浩民
Original assignee: Suzhou Jinmada Motor Co ltd
Current assignee: Suzhou Jinmada Motor Co ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-20
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses an oil leakage prevention structure and a cooling fan. The shell is provided with an installation tube, the bottom of the installation tube is of a closed structure, and lubricating oil is arranged at the bottom of the installation tube. The fan blade is arranged in the shell, a rotating shaft is arranged on the fan blade, and the rotating shaft is arranged in the mounting tube. Through the structure, the occurrence of oil leakage at the bottom of the installation pipe can be relieved.

Description

Oil leakage prevention structure and heat radiation fan

Technical Field

The utility model relates to the field of cooling fans, in particular to an oil leakage preventing structure and a cooling fan.

Background

With the rapid development of the intelligent home appliance industry, the CPU pursues high speed, and the heat dissipation problem derived from multifunction and miniaturization becomes more and more serious, and if the heat is not dissipated effectively, the working performance of the electronic element is greatly affected, and meanwhile, the service life of the electronic element is also shortened. Therefore, in the industry, a radiator is usually attached to the heat generating electronic component and a cooling fan is used to blow air to the radiator to generate a forced air flow so as to accelerate heat dissipation, or the cooling fan is directly used to cool the heat generating electronic component.

In the prior art, the bottom of the installation tube of the radiator fan is generally of an unsealed structure, and then an oil seal cover is plugged into the bottom of the installation tube to seal the oil of the installation tube, but the connection part between the oil seal cover and the bottom of the installation tube is insufficient in tightness, so that lubricating oil is easy to leak after long-time use.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide an oil leakage prevention structure which can relieve the occurrence of oil leakage at the bottom of an installation pipe.

In order to achieve the above purpose, the utility model provides an oil leakage preventing structure, which comprises a shell and fan blades. The shell is provided with an installation tube, the bottom of the installation tube is of a closed structure, and lubricating oil is arranged at the bottom of the installation tube. The fan blade is arranged in the shell, a rotating shaft is arranged on the fan blade, and the rotating shaft is arranged in the mounting tube.

In one or more embodiments, the fan blade has a mounting portion, and one end of the rotating shaft is fixed to the mounting portion.

In one or more embodiments, a bearing is arranged in the mounting tube, the rotating shaft is inserted in the middle of the bearing, and a stator is arranged on the outer wall of the mounting tube.

In one or more embodiments, the bearing is an interference fit with the mounting tube inner wall.

In one or more embodiments, the stator is an interference fit with an outer wall of the mounting tube.

In one or more embodiments, the mounting tube is an integrally formed structure with the housing.

In one or more embodiments, the fan blade is provided with a magnet ring, and the magnet ring is located at the periphery of the stator.

In one or more embodiments, a catch is provided at an end of the shaft remote from the mounting portion to limit axial movement of the shaft.

In one or more embodiments, a PCB board is provided on a side of the stator remote from the mounting portion.

The utility model also provides a cooling fan which comprises the oil leakage prevention structure.

Compared with the prior art, the oil leakage prevention structure provided by the utility model has the following advantages:

through carrying out integration injection moulding with installation tube bottom and casing, realized the sealed of installation tube bottom, avoided lubricating oil to leak the emergence of condition from installation tube bottom. The service life of the fan is prolonged, parts and relevant assembly procedures are omitted, and the cost is reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of an oil leakage preventing structure according to an embodiment of the present utility model.

The main reference numerals illustrate:

1. a housing; 2. installing a pipe; 3. a fan; 4. a mounting part; 5. a rotating shaft; 6. a bearing; 7. a stator; 8. a buckle; 9. a PCB board; 10. a magnet ring; 11. and a sealing part.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

In the prior art, the bottom of the installation tube 2 of the cooling fan 3 is generally in an unsealed structure, and then oil is sealed to the lubricating oil in the installation tube 2 by plugging an oil seal cover into the bottom of the installation tube 2, but the joint between the oil seal cover and the bottom of the installation tube 2 is easy to leak the lubricating oil due to insufficient tightness. According to the utility model, the bottom of the mounting tube 2 and the shell 1 are subjected to integrated injection molding, so that the bottom of the mounting tube 2 is sealed, and the condition that lubricating oil leaks from the bottom of the mounting tube 2 is avoided.

As shown in fig. 1, an oil leakage preventing structure according to an embodiment of the present utility model includes a housing 1 and fan blades. The shell 1 is provided with a mounting tube 2, the bottom of the mounting tube 2 is of a closed structure, and lubricating oil is arranged at the bottom of the mounting tube 2. The fan blade is arranged in the shell 1, a rotating shaft 5 is arranged on the fan blade, and the rotating shaft 5 is arranged in the mounting tube 2.

According to the utility model, through the structure, the condition of liquid leakage at the bottom of the mounting pipe 2 on the cooling fan 3 can be effectively avoided.

Specifically, the mounting tube 2 and the housing 1 are integrally formed, and a seal portion 11 is formed at the junction between the mounting tube 2 and the housing 1. The fan blade is provided with a mounting part 4, one end of a rotating shaft 5 is fixed on the mounting part 4, and the rotating shaft 5 synchronously rotates along with the fan blade.

In an embodiment, the inside of the installation tube 2 is provided with a bearing 6, the bearing 6 is in interference fit with the inner wall of the installation tube 2, and the rotating shaft 5 is inserted in the middle of the bearing 6. The outer wall of the installation tube 2 is provided with a stator 7, and the stator 7 is in interference fit with the outer wall of the installation tube 2. Specifically, the fan blade is provided with a magnet ring 10, and the magnet ring 10 is positioned on the periphery of the stator 7. The rotating shaft 5 rotates in the bearing 6 under the magnetic action between the magnet ring 10 and the stator 7, so as to drive the fan blades to rotate.

One end of the rotating shaft 5 away from the mounting portion 4 is provided with a buckle 8 to limit the axial movement of the rotating shaft 5. Specifically, a clamping groove is formed in the rotating shaft 5, the clamping buckle 8 is clamped with the clamping groove, and the clamping buckle 8 is in abutting connection with the bearing 6 in the axial direction. In one embodiment, the side of the stator 7 away from the mounting portion 4 is provided with a PCB 9, and the PCB 9 is used to control the operation of the fan blades.

The utility model also provides a cooling fan 3 which comprises the oil leakage prevention structure.

through carrying out integration injection moulding with installation tube 2 bottom and casing 1, realized the sealed of installation tube 2 bottom, avoided lubricating oil to leak the emergence of the condition from installation tube 2 bottom. The service life of the fan 3 is prolonged, parts and relevant assembly procedures are omitted, and the cost is reduced.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. An oil leakage preventing structure, comprising:

the shell (1) is provided with a mounting pipe (2), the bottom of the mounting pipe (2) is of a closed structure, and lubricating oil is arranged at the bottom of the mounting pipe (2); and

the fan blades are arranged in the shell (1), a rotating shaft (5) is arranged on the fan blades, and the rotating shaft (5) is arranged in the mounting tube (2);

the fan blade is provided with an installation part (4), one end of a rotating shaft (5) is fixed on the installation part (4), a bearing (6) is arranged in the installation tube (2), the rotating shaft (5) is inserted in the middle of the bearing (6), a stator (7) is arranged on the outer wall of the installation tube (2), and one side, away from the installation part (4), of the stator (7) is provided with a PCB (9).

2. The oil leakage prevention structure according to claim 1, wherein the bearing (6) is interference fit with the inner wall of the mounting tube (2).

3. The oil leakage prevention structure according to claim 1, wherein the stator (7) is interference fit with an outer wall of the mounting tube (2).

4. The oil leakage preventing structure according to claim 1, wherein the mounting tube (2) and the housing (1) are of an integrally formed structure.

5. The oil leakage prevention structure according to claim 1, wherein a magnet ring (10) is provided on the fan blade, and the magnet ring (10) is located at the periphery of the stator (7).

6. The oil leakage preventing structure according to claim 1, wherein an end of the rotating shaft (5) remote from the mounting portion (4) is provided with a buckle (8) to restrict axial movement of the rotating shaft (5).

7. A radiator fan (3) comprising the oil leakage preventing structure according to any one of claims 1 to 6.