CN105275356A - Fan shutter device - Google Patents

Abstract

A fan shutter device comprises: a frame, a plurality of blades and a plurality of shaft sleeves, wherein the first frame and the second frame of the frame are respectively provided with a plurality of connection grooves, a plurality of fixing holes and a plurality of displacement holes, and each blade has an expansion portion and a connecting shaft, wherein the connecting shaft is provided with the shaft sleeve at the position of the connection groove, and a plurality of fixing elements are respectively arranged on the shaft cylinder through the fixing holes, thereby providing a rotational gap between the blade and the frame, thereby avoiding assembly deformation and friction interference between the blade and the frame and achieving the goal of reducing manufacturing costs, and achieving the effect of facilitating the opening angle of the blade by arranging the expansion portion on the displacement hole for opening limitation.

Description

A fan shutter device

【Technical field】

The invention relates to a fan structure, in particular to a fan louver device which can avoid assembly deformation and frictional interference between blades and frames, and can reduce manufacturing costs.

【Background technique】

Due to the vigorous development of the electronic product industry today, the performance of electronic components is rapidly improving, and the calculation processing speed is getting faster and faster, and the calculation speed of the internal chipset is constantly increasing, and the number of chips is also increasing, so that the heat emitted by the aforementioned chips during work is also increasing. As the number of chips increases, and the aforementioned heat is not dissipated immediately and quickly, it will greatly affect the performance of electronic components, such as reducing the processing speed of electronic components, crashing, burning, etc., so heat dissipation has become an important aspect of electronic components. It is one of the important issues in the field, and it is a common method to use a cooling fan as a heat dissipation device.

A general axial flow fan includes a fan frame and a fan wheel, the fan wheel is pivotally connected in the fan frame, and when the axial flow fan is in operation, the fan wheel rotates forward in the fan frame to turn the fan wheel The air from one side is sent to the other side to dissipate heat from the environment and heating elements on the other side. The fans are often used in system equipment such as personal computers and servers to dissipate the heat generated by the electronic components inside the system. It is derived from the inside of the system; however, this type of fan often encounters the problem of airflow backflow in applications, that is, when the fan fails or is not working, the external airflow flows back into the system through the fan, causing the flow field in the system to become unstable ; In view of the problem of fan airflow backflow, many companies have developed a variety of airflow non-return devices. At present, there are common windshield structures similar to louvers. For example, the case of Chinese Patent No. 200620145328.3 discloses a cooling fan, which includes a fan The main body is equipped with louvers on the side of the air outlet of the fan body. The louvers include a frame and multiple louver blades, and the two ends of the louver blades protrude from the shaft holes on the frame. When the blades are opened, the blades droop due to gravity when they stop rotating, and they are positioned through the convex points on the frame when they droop. Frictional interference with the inner wall of the frame increases the resistance of the blades to open, which makes the blades not open smoothly. In addition, the convex points for positioning the frame are set on the inner side of the frame, which requires high mold costs; therefore, the conventional technology has the following disadvantages:

1. The deformation of the frame and the opening of the blades are not smooth;

2. Frictional interference between the blade and the inner wall of the frame;

3. The mold cost is high.

【Content of invention】

Therefore, in order to solve the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a fan louver device that can avoid assembly deformation and avoid frictional interference between blades and frames, and can reduce manufacturing costs.

Another object of the present invention is to provide a fan shutter device which can conveniently position the opening angle of the blades.

In order to achieve the above purpose, the present invention provides a fan shutter device, which is assembled on a fan, including: a frame, the frame has a first frame and a second frame, and has an inlet and an outlet on both sides , the first frame and the second frame respectively have a plurality of connecting grooves, a plurality of fixing holes and a plurality of displacement holes; a plurality of blades are arranged between the inlet and the outlet, and one side of the blade has a connecting shaft, and the connecting shaft There is a connecting groove at both ends; and a plurality of bushings, each bushing has a pivot rod and a shaft tube respectively, the pivot rod is combined with the connecting groove, and the shaft tube is relatively assembled on the joint In the groove, a plurality of fixing elements are respectively assembled on the shaft cylinder through the fixing holes.

There is a channel between the inlet and the outlet, and the vanes are arranged at the position of the channel.

The fixing hole passes through the first frame and the second frame and communicates with the assembly groove.

The fixing hole communicates relatively with the end of the assembly groove.

The displacement hole presents a fan shape.

The two ends of the blades respectively have a spread part, and the spread parts are relatively arranged in the displacement hole.

The fixing element directly fixes the shaft sleeve through the fixing hole, and then the blade is assembled by the shaft sleeve, so that there is a rotation gap between the blade and the frame, which can avoid assembly deformation and frictional interference between the blade and the frame, and can reduce manufacturing costs , In addition, through the expansion part is arranged in the displacement hole to limit the opening to achieve the effect of facilitating the opening angle of the blade.

【Description of drawings】

Fig. 1 is the three-dimensional schematic view of preferred embodiment of the present invention;

Fig. 2 is a three-dimensional exploded schematic diagram of a preferred embodiment of the present invention;

Fig. 3 is a partial cross-sectional schematic view of a preferred embodiment of the present invention;

Fig. 4 is the implementation schematic diagram 1 of the preferred embodiment of the present invention;

Fig. 5 is a second implementation schematic diagram of a preferred embodiment of the present invention.

The component names corresponding to the reference signs in the figure are:

Fan Shutter Assembly 1

frame 2

First border 21

second frame 22

Assembly slot 23

Fixing hole 24

Displacement hole 25

Entrance 26

Exit 27

channel 28

blade 3

Exhibition Department 31

connecting shaft 32

Connection slot 321

Bushing 4

Pivot rod 41

Shaft 42

Fixing element 43

fan 5

【detailed description】

The above-mentioned purpose of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the accompanying drawings.

As shown in Fig. 1, Fig. 2 and Fig. 3, it is a three-dimensional schematic diagram, a three-dimensional exploded schematic diagram and a partial cross-sectional schematic diagram of a preferred embodiment of the present invention. As shown in the figure, the fan shutter device 1 of the present invention includes a frame 2 and a plurality of Blades 3 and a plurality of shaft sleeves 4.

The frame 2 has a first frame 21 and a second frame 22, and has an inlet 26 and an outlet 27 on both sides respectively, a channel 28 is arranged between the inlet 26 and the outlet 27, and the first frame 21 On the second frame 22, there are respectively multiple connecting grooves 23, multiple fixing holes 24 and multiple displacement holes 25, and the connecting grooves 23, fixing holes 24 and displacement holes 25 on both sides correspond horizontally to each other, and the fixing holes 24 It passes through the first frame 21 and the second frame 22 and communicates with the assembly groove 23 , and its fixing hole 24 communicates with the end of the assembly groove 23 oppositely, and its displacement hole 25 presents a sector shape.

The blades 3 are arranged in the channel 28 between the inlet 26 and the outlet 27, and each blade 3 has a spreading portion 31 at both ends and a connecting shaft 32 on one side, and the spreading portion 31 is relatively arranged in the displacement hole 25 Inside, two ends of the connecting shaft 32 respectively have a connecting groove 321 .

The bushing 4 is assembled at the position of the connecting groove 321, and each bushing 4 has a pivot rod 41 and a shaft cylinder 42 respectively, and the pivot rod 41 is assembled with the connecting groove 321, and each shaft cylinder 42 enter the first frame 21 and the second frame 22 respectively from the assembly groove 23 of the first frame 21 and the second frame 22, so that the shaft cylinder 42 is relatively assembled at the end of the assembly groove 23 and corresponds to the The fixing hole 24 is provided, and a plurality of fixing elements 43 respectively pass through the fixing hole 24 and are assembled on the shaft cylinder 42 .

As shown in Fig. 2, Fig. 4 and Fig. 5, it is the implementation schematic diagram 1 and the implementation schematic diagram 2 of the preferred embodiment of the present invention, wherein the fan shutter device 1 is set on a fan 5, and its fan 5 is set on the On the frame 2, when the fan 5 is not rotating, the blades 3 droop due to gravity and close the channel 28, and the blades 3 are connected to the connecting grooves 321 at both ends of the connecting shaft 32 through the pivot rod 41 of the sleeve 4. , and the length of the pivot rod 41 is greater than the length of the internal space of the connecting groove 321, and the shaft cylinder 42 protrudes from the assembly groove 23, and the shaft cylinder 42 is assembled by the fixing element 43 through the fixing hole 24 , the connecting shaft 32 is positioned and fixed with the first frame 21 and the second frame 22 , and there is a gap between the connecting shaft 32 and the first frame 2 and the second frame 2 .

And when its fan 5 rotates, its fan 5 guides the air-flow at inlet 26 place to enter channel 28 by inlet 26, and air-flow is sent to blade 3 and pushes away blade 3, when blade 3 is squeezed by air-flow, its blade 3 It will rotate around the connecting shaft 32, and the connecting groove 321 of the connecting shaft 32 is assembled through the pivot rod 41 of the sleeve 4, and the length of the pivot rod 41 is greater than the internal space of the connecting groove 321. length, and the shaft cylinder 42 protrudes from the assembly groove 23, and then the shaft cylinder 42 is assembled by the fixing element 43 through the fixing hole 24, so that it connects the shaft 32 with the first frame 21 and the second frame 22 Position and fix each other, and keep a gap between the connecting shaft 32 and the first frame 2 and the second frame 2, and there is also a gap between the blade 3 and the first frame 21 and the second frame 22, which is convenient for the blade 3 When rotating around the connecting shaft 32, the blades 3, the first frame 21 and the second frame 22 will not frictionally interfere with each other, and the shaft sleeve 4, the fixing hole 24 and the fixing element 43 are coaxially matched in the axial direction. When the fixing element 43 is assembled with the shaft sleeve 4, it can be conveniently assembled and can avoid deformation of the first frame 21 and the second frame 22 when assembled, and can reduce the mold development cost at the same time.

Wherein the two ends of the blade 3 respectively have the said expansion part 31, and its expansion part 31 is relatively arranged in the said displacement hole 25, and its displacement hole 25 presents a fan shape, so that the blade 3 is extruded by the air flow to connect the shaft 32 When rotating as the center, the rotation angle of the blade 3 can be limited through the displacement hole 25, so as to achieve the effect of conveniently positioning the opening angle of the blade 3.

The fixing element 43 directly fixes the shaft sleeve 4 through the fixing hole 24, and then the blade 3 is assembled by the shaft sleeve 4, so that there is a rotation gap between the blade 3 and the frame 2, which can avoid assembly deformation and avoid the blade 3 and the frame. 2 Frictional interference can reduce the manufacturing cost, and the expansion part 31 is arranged in the displacement hole 25 to limit the opening to facilitate the opening angle of the blade 3 .

To sum up, the fan louver device 1 of the present invention can indeed achieve its effect and purpose when used, so the present invention is an invention with excellent practicability. In order to meet the requirements of the application for the invention patent, an application is filed according to the law. I hope that the trial committee will approve this case as soon as possible to protect the hard work of the inventor. If the Junju trial committee has any questions, please feel free to write to us. The inventor will do his best to cooperate.

Claims (6)

1. A fan shutter device, assembled in a fan, comprising: A frame, the frame has a first frame and a second frame, and has an inlet and an outlet on both sides respectively, the first frame and the second frame respectively have a plurality of connection slots, a plurality of fixing holes and a plurality of displacement hole; A plurality of blades are arranged between the inlet and the outlet, and one side of the blade has a connecting shaft, and the two ends of the connecting shaft respectively have a connecting groove; and A plurality of shaft sleeves, each of which has a pivot rod and a shaft cylinder, the pivot rod is combined with the connecting groove, and the shaft cylinder is relatively assembled in the combination groove, and the plurality of fixing elements respectively pass through the connecting groove. The fixing holes are set on the shaft cylinder. 2 . The fan louver device according to claim 1 , wherein there is a channel between the inlet and the outlet, and the vanes are arranged at the position of the channel. 3 . 3 . The fan shutter device according to claim 1 , wherein the fixing hole passes through the first frame and the second frame and communicates with the assembly groove. 4 . 4 . The fan louver device according to claim 1 , wherein the fixing hole communicates with the end of the connecting groove oppositely. 5. The fan louver device according to claim 1, wherein the displacement hole is fan-shaped. 6 . The fan louver device according to claim 5 , wherein the two ends of the blades respectively have a spread portion, and the spread portions are relatively arranged in the displacement hole. 7 .