CN203453084U - Shock-absorbing fan - Google Patents

Abstract

A damping fan comprises a fan frame, a driving assembly and a fan wheel. The fan frame comprises an outer frame and a base, wherein the outer frame is provided with two air guide ports, a flow guide channel is arranged between the two air guide ports, the outer frame is provided with a positioning hole, the base is fixed at the positioning hole, and a radial buffer gap is formed between the outer side wall of the base and the inner side wall of the positioning hole of the outer frame; the driving component is arranged on the base of the fan frame; the fan wheel is rotatably combined with the driving component. Therefore, the vibration transmitted to the outer frame through the base is greatly reduced by utilizing the radial buffer gap.

Description

Shock-absorbing fan

technical field

The utility model relates to a fan, in particular to a shock-absorbing fan with the function of buffering and absorbing shock.

Background technique

Existing fans generally include a fan frame, and a fan wheel that can rotate is arranged inside the fan frame. When the fan is installed in various electronic systems, the rotation of the fan wheel can be used to generate air volume, so as to The electronic components inside the electronic system provide a predetermined heat dissipation effect; however, the fan wheel of the existing fan usually vibrates during rotation, and the vibration is easily transmitted to the casing of the electronic system through the fan frame. Not only will it generate noise, but it will also reduce the stability of the electronic system, causing premature fatigue and aging of the contacts of the electronic components inside the electronic system, thereby shortening the service life of the electronic system.

For this reason, please refer to FIG. 1 , such as the invention patent case of "Fan Shell Seat" in Taiwan Publication No. I271475, which discloses a conventional fan 9 with a shock-absorbing function. The conventional fan 9 has a frame 91 , the inner side of the frame 91 is connected with a base frame 93 by several ribs 92 , and a rotatable fan wheel 94 is arranged on the base frame 93 . Each corner of the frame 91 is respectively provided with a rubber column 95, and the frame 91 of the existing fan 9 is indirectly connected to a casing 96 of various electronic systems (such as a computer host, etc.) by means of the rubber column 95; Thereby, when the fan wheel 94 of the conventional fan 9 rotates and generates vibration, the rubber column 95 can be used to buffer the vibration generated by the fan wheel 94 .

However, since the fan wheel 94 of the above-mentioned conventional fan 9 is rotatably combined with the base frame 93, the vibration generated by the fan wheel 94 during rotation has a vibration transmission path, that is, through the base frame 93 and the ribs. 92 to the frame 91, although the fan 9 can use the rubber column 95 to buffer the vibration from the frame 91, the rubber column 95 can provide a very limited shock absorption effect, causing the vibration to still be transmitted to the The casing 96 of the electronic system will generate noise, and also reduce the operational stability of the electronic system, or when the electronic system has a hard disk, it may even make the hard disk unable to read signals, resulting in a reduction in the service life of the electronic system .

Utility model content

The main purpose of the utility model is to provide a shock-absorbing fan, which can effectively block the transmission path of the vibration, so as to more comprehensively and effectively reduce the vibration generated when the fan is in operation, so that it can be used in electronic systems. Maintain the stability of the electronic system and reduce vibration and noise.

In order to achieve the aforementioned purpose of the utility model, the damping fan of the utility model at least includes a fan frame, a driving assembly and a fan wheel. The fan frame includes an outer frame and a base, the outer frame is provided with two air guide ports, a guide channel is arranged between the two air guide ports, the outer frame is provided with a positioning hole, and the positioning hole of the outer frame has a minimum Inner diameter, the base has a maximum outer diameter, the maximum outer diameter is less than or equal to the minimum inner diameter; and, the positioning hole is preferably provided with an axial positioning shoulder, the base is fixed in the positioning hole and abuts the shaft To the positioning shoulder, preferably, a radial buffer gap can be formed between the outer wall of the base and the inner wall of the positioning hole of the outer frame; the drive assembly is arranged on the base of the fan frame; the fan A wheel is rotatably coupled to the drive assembly.

The outer frame of the fan frame is a hollow frame body, and the positioning hole is set on the periphery of one of the air guide ports of the outer frame. The base of the fan frame includes a base, several connecting pieces and a contact piece. One end of a connecting piece is connected to the seat body, and the other end is connected to the abutting piece, the base is fixed to the positioning hole by the abutting piece, and the abutting piece of the base can optionally abut against the axial positioning shoulder , and the base preferably abuts against the axial positioning shoulder indirectly through a buffer member, and the radial buffer gap is formed between the outer wall of the abutting member of the base and the inner wall of the positioning hole of the outer frame .

The outer frame of the fan frame includes a hollow frame body, several connecting pieces and an abutting piece, one end of the several connecting pieces is connected to the inner side wall of the hollow frame body, and the other end is connected to the abutting piece, the fan frame The base is a seat body, the positioning hole is set on the abutting piece of the outer frame, the inner side wall of the positioning hole of the abutting piece forms the axial positioning shoulder, the seat body is fixed in the positioning hole and abuts against The radial buffer gap is formed between the axial positioning shoulder, the outer wall of the seat body and the inner wall of the positioning hole of the abutting piece.

The outer frame of the fan frame is a hollow frame body, and the positioning hole is arranged on the periphery of one of the air guide ports of the outer frame. The base of the fan frame includes a base and several connectors. One end of the connecting piece is combined with the positioning hole, and the peripheral edge of one end of the several connecting pieces abuts against the axial positioning shoulder, and one end of one end of the several connecting pieces is connected to the inner side wall of the positioning hole of the outer frame The radial buffer gap is formed between them, and the other ends of the several connecting pieces are connected to the seat body.

The base is glued and fixed on the axial positioning shoulder.

The outer frame is provided with several buckle parts, and the several buckle parts are fastened to fix the base, and the base is limited and fixed between the several buckle parts and the axial positioning shoulder.

The outer frame is provided with several fixing holes, and the positioning hole of the outer frame is combined with a fixing piece. Fixed to the plurality of fixing holes, the base is clamped and fixed between the fixing member and the axial positioning shoulder.

The abutting piece is a fixed ring.

A plurality of positioning notches are provided on the periphery of one of the air guide openings of the outer frame, and several positioning protrusions are provided on the base corresponding to the positioning notches, and the positioning protrusions are snapped into the positioning notches.

The positioning holes of the outer frame are provided with several fastening grooves, and the base is provided with several elastic fastener pieces corresponding to the fastening grooves, and the elastic fastener pieces are fastened to the fastening grooves.

The maximum outer diameter of the base of the above-mentioned shock-absorbing fan is not greater than the minimum inner diameter of the outer frame, and preferably matches the radial buffer gap formed between the outer frame and the base. When the shock-absorbing fan is applied to each When the electronic system is installed, even if vibration is generated due to the rotation of the fan wheel, the radial buffer gap can still be used to greatly reduce the vibration transmitted to the outer frame through the base, so as to avoid noise and improve the use of the electronic system life expectancy etc.

Description of drawings

Fig. 1 is a combined sectional view of a conventional fan.

Fig. 2 is a three-dimensional exploded view of the damping fan of the first preferred embodiment of the present invention.

Fig. 3 is a combined sectional view of the damping fan according to the first preferred embodiment of the present invention.

Fig. 4 is a partially enlarged cross-sectional view of the damping fan according to the first preferred embodiment of the present invention.

Fig. 5 is a three-dimensional exploded view of the base of the shock-absorbing fan of the present invention being fixed with a fixing piece.

Fig. 6 is a combined cross-sectional view of the base of the shock-absorbing fan of the present invention being fixed with a fixing piece.

Fig. 7 is a three-dimensional exploded view of the base of the shock-absorbing fan of the present invention being fixed by positioning projections.

Fig. 8 is a partially enlarged cross-sectional view of the base of the shock-absorbing fan of the present invention being fixed by positioning projections.

Fig. 9 is a combined sectional view of the damping fan according to the second preferred embodiment of the present invention.

Fig. 10 is a partially enlarged cross-sectional view of the damping fan according to the second preferred embodiment of the present invention.

Fig. 11 is a three-dimensional exploded view of the base of the shock-absorbing fan of the present invention being fixed by elastic buckles.

Fig. 12 is a partially enlarged cross-sectional view of the base of the shock-absorbing fan of the present invention being fixed by elastic buckles.

Fig. 13 is a three-dimensional exploded view of the damping fan according to the third preferred embodiment of the present invention.

Fig. 14 is a combined sectional view of the damping fan according to the third preferred embodiment of the present invention.

Fig. 15 is a partially enlarged cross-sectional view of the damping fan according to the third preferred embodiment of the present invention.

in:

[this utility model]

1 Frame 11 Outer Frame 11a Hollow Frame 11b Connector

11c Contact piece 111 Air guide port 112 Air guide port 113 Air guide channel

114 positioning hole 115 axial positioning shoulder 12 base 12a base

12b Connector 121b Perimeter 122b End 12c Abutment

2 drive assembly 3 fan wheels 41 buckle part 42 fixing hole

43 Fixing piece 431 Perforation 44 Combining piece 451 Positioning gap

452 Positioning bump 461 Buckle groove 462 Elastic buckle 5 Buffer

d1 minimum inner diameter d2 maximum outer diameter D radial buffer clearance

〔current technology〕

9 fans 91 frame 92 ribs 93 base frame

94 fan wheels 95 rubber cylinders 96 casings.

Detailed ways

In order to make the above and other purposes, features and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be described in detail below together with the accompanying drawings.

Please refer to FIGS. 2 and 3 , the damping fan of the first preferred embodiment of the present invention at least includes a fan frame 1 , a driving assembly 2 and a fan wheel 3 . The fan frame 1 is a fan frame structure capable of introducing and exporting airflow, such as an axial flow fan frame, a centrifugal fan frame or a horizontal convection fan frame, etc. In this preferred embodiment, the fan frame 1 is an axial flow fan frame. Frame; the drive assembly 2 is combined inside the fan frame 1; the fan wheel 3 is rotatably combined with the drive assembly 2, so as to drive the fan wheel 3 to rotate by means of the drive assembly 2.

The above-mentioned fan frame 1 can be various fan frame structures that can be accommodated by the above-mentioned drive assembly 2 and the above-mentioned fan wheel 3 and that the airflow can be introduced and exported in the axial direction. The fan frame structure can be designed in various geometric shapes, For example, polygonal, circular or elliptical, etc.; in this preferred embodiment, the fan frame 1 is disclosed as a square fan frame structure.

The fan frame 1 includes an outer frame 11 and a base 12, the outer frame 11 is provided with two air guide openings 111, 112, and a guide channel 113 is arranged between the two air guide openings 111, 112, wherein the two air guide openings 111 , 112 can be used as the air inlet and the air outlet respectively. In actual application, any air guide can be set as the air inlet or the air outlet. The outer frame 11 is provided with a positioning hole 114, and the positioning hole 114 is provided with an axial positioning Shoulder 115, the base 12 is fixed on the positioning hole 114 and abuts against the axial positioning shoulder 115, as shown in Figures 3 and 4, the positioning hole 114 of the outer frame 11 has a minimum inner diameter d1, the base 12 has a maximum outer diameter d2, the maximum outer diameter d2 is not greater than (that is, less than or equal to) the minimum inner diameter d1, wherein the base 12 preferably abuts against the axial positioning shoulder 115 indirectly through a buffer member 5, In order to provide axial shock absorbing function, preferably, a radial buffer gap D can be formed between the outer wall of the base 12 and the inner wall of the positioning hole 114 of the outer frame 11, wherein the base 12 The radial buffer gap D can be formed in all or part of the space between the outer wall and the inner wall of the positioning hole 114 of the outer frame 11 .

Moreover, in the first preferred embodiment of the present utility model, the outer frame 11 of the fan frame 1 is a hollow frame body 11a, and the positioning hole 114 can be set in one of the guides of the outer frame 11 (that is, the hollow frame body 11a ). The periphery of the tuyere 112 is used to directly form the axial positioning shoulder 115 on the inner side wall of the positioning hole 114 of the outer frame 11; the base 12 of the fan frame 1 includes a seat 12a, several connecting pieces 12b and an abutment 12c, one end of the several connecting pieces 12b is connected to the base 12a, and the other end is connected to the abutting piece 12c, so that the several connecting pieces 12b can be located between the base 12a and the abutting piece 12c; wherein the The connecting pieces 12b can be ribs or stator blades (ribs similar to fan blades), and the abutting piece 12c can be a fixing ring. Thereby, as shown in FIGS. 3 and 4 , the base 12 is fixed in the positioning hole 114 by the abutment piece 12c, and the abutment piece 12c abuts against the axial positioning shoulder 115, and makes the base The radial buffer gap D is formed between the outer sidewall of the abutting piece 12c of the seat 12 and the inner sidewall of the positioning hole 114 of the outer frame 11 (ie, the hollow frame body 11a).

The fixing method of the base 12 of the shock-absorbing fan of the present invention and the positioning hole 114 of the outer frame 11 can be bonding, buckling, locking and the like. For example, the base 12 can be adhesively fixed on the axial positioning shoulder 115, and ensure that there is the gap between the outer side wall of the abutting part 12c of the base 12 and the inner side wall of the positioning hole 114 of the outer frame 11. Radial buffer gap D; or, as shown in Figures 3 and 4, several buckle parts 41 can be provided on the periphery of one of the air guide openings 112 of the outer frame 11, and the base 12 can be forced into the positioning hole 114 , so that the base 12 can be snapped and fixed by the several buckling parts 41, so that the base 12 can be limited and fixed between the several buckling parts 41 and the axial positioning shoulder 115; or, As shown in Figures 5 and 6, several fixing holes 42 may be provided on the periphery of one of the air guide openings 112 of the outer frame 11, and the outer frame 11 is combined with a fixing member 43, and the fixing member 43 is provided with corresponding fixing holes 42. Several through-holes 431, whereby several joints 44 (such as screws, etc.) can be used to penetrate through the several through-holes 431 and then locked in the several fixing holes 42, so as to fix the fixing member 43 on the outer The positioning hole 114 of the frame 11, so that the base 12 can be clamped and fixed between the fixing member 43 and the axial positioning shoulder 115; or, as shown in Figures 7 and 8, the outer frame 11 The periphery of one of the air guide openings 112 can be provided with several positioning gaps 451, and the base 12 is provided with several positioning bumps 452 corresponding to the positioning gaps 451. Therefore, the engagement between the positioning protrusion 452 and the positioning notch 451 can be reused to make the assembly of the outer frame 11 and the base 12 easier, so as to provide better assembly convenience.

The driving assembly 2 is arranged on the base 12 of the fan frame 1, the fan wheel 3 is rotatably combined with the driving assembly 2, and is used to introduce airflow from an air guide port 111 into the air guide channel 113, and then guide the airflow from Another air guide port 112 leads out, and the driving assembly 2 is designed for various structures that can drive the fan wheel 3 to rotate, for example: the composition of silicon steel sheet group, stator coil or circuit board, etc., its detailed structure composition and action principle are based on Those skilled in the art can understand it and need not repeat it.

Please refer to Figures 9 and 10, the structural features and composition of the damping fan in the second preferred embodiment of the present invention are roughly the same as those in the first preferred embodiment, the difference is that the second preferred embodiment of the present invention In an example, the outer frame 11 of the fan frame 1 includes a hollow frame body 11a, several connecting pieces 11b and an abutting piece 11c, one end of the several connecting pieces 11b is connected to the inner side wall of the hollow frame body 11a, and the other end Connect the abutting piece 11c so that the several connecting pieces 11b are located between the hollow frame body 11a and the abutting piece 11c, wherein the several connecting pieces 11b can be ribs or stator blades (ribs similar to fan blade shapes) , the abutting member 11c can be a fixed ring; the base 12 of the fan frame 1 is a base 12a. Thereby, the positioning hole 114 is arranged on the abutting piece 11c of the outer frame 11, and is used to directly form the axial positioning shoulder 115 on the inner side wall of the positioning hole 114 of the abutting piece 11c, and the base 12 (that is, the seat Body 12a) is fixed in the positioning hole 114 and abuts against the axial positioning shoulder 115, so that the outer wall of the base 12 (that is, the seat body 12a) and the inner wall of the positioning hole 114 of the abutting member 11c form a The radial buffer gap D; wherein the fixing method of the base 12 and the positioning hole 114 of the outer frame 11 can also be the above-mentioned bonding, buckling, locking, etc., which can be understood by those skilled in the art and cannot repeat.

Please refer to Figures 11 and 12, the positioning hole 114 of the outer frame 11 of the above-mentioned fan frame 1 is preferably provided with several fastening grooves 461, and the base 12 of the fan frame 1 is preferably provided with several fastening grooves 461. Elastic buckle 462, the elastic buckle 462 can be fastened to the fastening groove 461; thereby, the base 12 can be fastened to the fastening groove 461 of the outer frame 11 by using the elastic buckle 462, so as to It has the positioning effect of improving the convenience of assembly and preventing the base 12 from falling off in the axial direction.

Please refer to Figures 13, 14 and 15, the structural features and composition of the damping fan of the third preferred embodiment of the present invention are roughly the same as those of the preferred embodiment disclosed in Figures 5 and 6 above, the difference is that: In the third preferred embodiment of the utility model, the base 12 of the fan frame 1 omits the abutting piece 12c; thereby, the base 12 is combined with the end of the several connecting pieces 12b not connected to the base body 12a The positioning hole 114, and a peripheral edge 121b (as shown in FIG. 15 ) of one end of the several connecting pieces 12b abut against the axial positioning shoulder 115, and make an end 122b of one end of the several connecting pieces 12 The radial buffer gap D is formed between the inner side wall of the positioning hole 114 of the outer frame 11 (that is, the hollow frame body 11a); the fixing method of the base 12 and the positioning hole 114 of the outer frame 11 can also be as above The above-mentioned bonding, buckling, locking, etc. are understandable by those skilled in the art and will not be described in detail.

With the above-mentioned damping fans disclosed in the preferred embodiments of the present invention, since the maximum outer diameter d2 of the base 12 is not greater than the minimum inner diameter d1 of the outer frame 11, the base 12 is only axially It is fixed with the outer frame 11; thereby, when the shock-absorbing fan of the present invention is applied to various electronic systems, and the drive assembly 2 arranged on the base 12 drives the fan wheel 3 to rotate to generate vibration, The transmission path of vibration can be effectively blocked, and preferably the radial buffer gap D can be used to greatly reduce the vibration transmitted to the outer frame 11 through the base 12, so that the vibration can be effectively avoided, thereby improving The stability of the operation of the electronic system and the reduction of noise; and, especially when the fan frame 1 of the shock-absorbing fan of the present invention is preferably indirectly combined with the casing of the electronic system through buffer elements (such as rubber and other elements with elastic buffer functions) , then with the design of the radial buffer gap D, it will have a more significant buffer and shock absorption effect, so as to avoid noise and improve the service life of the electronic system.

The above is only a preferred embodiment of the utility model, and should not limit the scope of implementation of the utility model; therefore, all simple equivalent changes made according to the utility model patent scope and the content of the creation instructions All should still belong to the scope that the utility model patent covers.

Claims (13)

1. A damping fan, characterized in that, comprising: A fan frame includes an outer frame and a base, the outer frame is provided with two air guides, a guide channel is provided between the two air guides, the outer frame is provided with a positioning hole, the base is fixed For the positioning hole, the positioning hole of the outer frame has a minimum inner diameter, the base has a maximum outer diameter, and the maximum outer diameter is less than or equal to the minimum inner diameter; a drive assembly mounted on the base of the sash; and A fan wheel rotatably engages the drive assembly. 2. The damping fan according to claim 1, wherein a radial buffer gap is formed between the outer wall of the base and the inner wall of the positioning hole of the outer frame. 3. The shock-absorbing fan according to claim 2, wherein the positioning hole is provided with an axial positioning shoulder, and the base abuts against the axial positioning shoulder. 4. The shock-absorbing fan according to claim 3, wherein the base abuts against the axial positioning shoulder indirectly through a buffer member. 5. The shock-absorbing fan according to claim 3, wherein the outer frame of the fan frame is a hollow frame, the positioning hole is arranged on the periphery of one of the air guide ports of the outer frame, and the base of the fan frame It includes a base body, several connecting pieces and an abutting piece, one end of the several connecting pieces is connected to the base body, and the other end is connected to the abutting piece, the base is fixed to the positioning hole by the abutting piece, the The abutting piece of the base abuts against the axial positioning shoulder, and the radial buffer gap is formed between the outer sidewall of the abutting piece of the base and the inner sidewall of the positioning hole of the outer frame. 6. The shock-absorbing fan according to claim 3, wherein the outer frame of the fan frame includes a hollow frame body, several connecting pieces and an abutting piece, one end of the several connecting pieces is connected to the hollow frame The inner side wall of the body, the other end is connected to the abutting piece, the base of the fan frame is a seat body, the positioning hole is arranged on the abutting piece of the outer frame, and the inner side wall of the positioning hole of the abutting piece forms the shaft The seat body is fixed to the positioning hole and abuts against the axial positioning shoulder, and the radial buffer gap is formed between the outer side wall of the seat body and the inner side wall of the positioning hole of the abutting piece. 7. The shock-absorbing fan according to claim 3, wherein the outer frame of the fan frame is a hollow frame, the positioning hole is arranged on the periphery of one of the air guide ports of the outer frame, and the base of the fan frame It includes a seat body and several connecting pieces, one end of the several connecting pieces of the base is combined with the positioning hole, and a peripheral edge of one end of the several connecting pieces abuts against the axial positioning shoulder, and the several connecting pieces The radial buffer gap is formed between one end of one end of the connecting piece and the inner side wall of the positioning hole of the outer frame, and the other ends of the connecting pieces are connected to the base body. 8. The shock-absorbing fan according to claim 3, 4, 5, 6 or 7, wherein the base is adhesively fixed to the axial positioning shoulder. 9. The shock-absorbing fan according to claim 3, 4, 5, 6 or 7, characterized in that, the outer frame is provided with several buckle parts, and the several buckle parts are fastened to fix the base, and the base The seat is limited and fixed between the several buckle parts and the axial positioning shoulder. 10. The shock-absorbing fan according to claim 3, 4, 5, 6 or 7, characterized in that, the outer frame is provided with several fixing holes, and the outer frame is combined with a fixing piece, and the fixing piece is provided with corresponding numbers. A plurality of through holes of the plurality of fixing holes, a plurality of coupling parts pass through the plurality of through holes and are locked in the plurality of fixing holes, and the base is clamped and fixed between the fixing part and the axial positioning shoulder. 11. The shock-absorbing fan according to claim 5 or 6, wherein the abutting member is a fixing ring. 12. The shock-absorbing fan according to claim 1, 2, 3, 4, 5 or 6, wherein a plurality of positioning notches are provided on the periphery of one of the air guide openings of the outer frame, and the base is provided corresponding to the positioning notches. There are several positioning protrusions, and the positioning protrusions are snapped into the positioning notches. 13. The shock-absorbing fan according to claim 1, 2, 3, 4, 5 or 6, wherein the positioning hole of the outer frame is provided with several fastening grooves, and the base is provided with several fastening grooves corresponding to the fastening grooves. An elastic buckle is fastened to the fastening groove.

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