TWI542792B - Vibration-reducing fan - Google Patents

Description

Shock absorbing fan

The present invention relates to a fan, and more particularly to a damper fan having a shock absorbing function.

The conventional fan generally includes a frame, and the fan frame is internally provided with a wheel that can be rotated. When the conventional fan is disposed inside various electronic systems, the rotation of the fan wheel can be utilized to generate an air volume. The electronic components inside the electronic system provide a predetermined heat dissipation effect; however, the fan wheel of the conventional fan usually generates vibration during the rotation process, and the vibration is easily transmitted to the casing of the electronic system via the frame, wherein the vibration situation Not only will noise be generated, but also the stability of the electronic system will be reduced, resulting in early fatigue and aging of the electronic component contacts inside the electronic system, thereby shortening the service life of the electronic system.

For this reason, please refer to the first embodiment of the invention, as disclosed in the "Fan Shell" invention patent of the Republic of China Announcement No. I271475, which discloses a conventional fan 9 having a shock absorbing function. The conventional fan 9 has a frame 91. The inside of the frame 91 is connected to a base frame 93 by a plurality of ribs 92. The base frame 93 is provided with a fan wheel 94 which is rotatable. Each of the corners of the frame 91 is provided with a rubber cylinder 95. The frame 91 of the conventional fan 9 is indirectly coupled to a casing of various electronic systems (such as a computer main body) by the rubber cylinder 95. 96; thereby, the rubber cylinder 95 can be used to buffer the vibration generated from the fan wheel 94 when the fan wheel 94 of the conventional fan 9 is rotated to generate vibration.

However, since the fan wheel 94 of the conventional fan 9 is rotatably coupled to the base frame 93, the vibration generated by the fan wheel 94 during the rotation has a vibration transmission path. That is, the frame 93 and the ribs 92 are transmitted to the frame 91. Although the fan 9 can use the rubber cylinder 95 to buffer the vibration from the frame 91, the rubber cylinder 95 can provide a shock absorbing effect. Limited, causing the vibration to still be transmitted to the casing 96 of the electronic system, thereby generating noise, and also reducing the operational stability of the electronic system, or even making the hard disk unreadable when the electronic system has a hard disk The signal causes the life of the electronic system to decrease.

The main object of the present invention is to provide a damper fan which can effectively block the transmission path of the vibration, and can more comprehensively and effectively reduce the vibration generated when the fan is operated, and can maintain the electronic when used for the electronic system. The stability of the system and the reduction of vibration noise.

In order to achieve the foregoing object, the damper fan of the present invention comprises at least one frame, a drive assembly and a fan wheel. The fan frame includes an outer frame and a base. The outer frame is provided with two air guiding openings. A guiding channel is defined between the two air guiding openings. The outer frame is provided with a positioning hole, and the inner side wall of the positioning hole of the outer frame Having a minimum inner diameter, the outer sidewall of the base has a maximum outer diameter, the maximum outer diameter being smaller than the minimum inner diameter; wherein a diameter is formed between an outer sidewall of the base and an inner sidewall of the positioning hole of the outer frame The positioning hole is preferably provided with an axially positioned shoulder, the base is fixed to the positioning hole and abuts the axial positioning shoulder; the driving component is disposed on the base of the fan frame; The fan wheel rotatably couples the drive assembly.

The outer frame of the fan frame is a hollow frame, and the positioning hole is disposed at a periphery of one of the air guiding openings of the outer frame, and the base of the fan frame comprises a body, a plurality of connecting members and an abutting member. One end of the connecting member is connected to the seat body, and the other end is connected to the abutting member. The base is fixed to the positioning hole by the abutting member, and the abutting member of the base can be selectively abutted against the axially positioned shoulder portion. And the base preferably indirectly abuts the axially positioned shoulder through a cushioning member, and the radial buffer gap is formed between an outer sidewall of the abutting member of the base and an inner sidewall of the positioning hole of the outer frame. .

The outer frame of the fan frame comprises a hollow frame body, a plurality of connecting members and an abutting member. One end of the plurality of connecting members is connected to the inner side wall of the hollow frame body, and the other end is connected to the abutting member. The base of the fan frame is a body, and the positioning hole is disposed on the abutting member of the outer frame, and the abutting The inner side wall of the positioning hole of the piece forms the axial positioning shoulder, the seat body is fixed to the positioning hole and abuts the axial positioning shoulder, and the outer side wall of the seat body and the positioning hole of the abutting member The radial buffer gap is formed between the side walls.

The outer frame of the fan frame is a hollow frame, and the positioning hole is disposed at a periphery of one of the air guiding openings of the outer frame, and the base of the fan frame comprises a body and a plurality of connecting members, and the plurality of connections of the base One end of the piece is coupled to the positioning hole, and a peripheral edge of one end of the plurality of connecting members abuts the axial positioning shoulder, and an end of one end of the plurality of connecting members and an inner side wall of the positioning hole of the outer frame The radial buffer gap is formed between the other ends of the plurality of connectors.

The base is adhesively fixed to the axially positioned shoulder.

The outer frame is provided with a plurality of latching portions, and the plurality of latching portions are fastened to the base, and the base is fixedly fixed between the plurality of latching portions and the axially positioned shoulder portion.

The outer frame is provided with a plurality of fixing holes, and the positioning hole of the outer frame is combined with a fixing member, the fixing member is provided with a plurality of perforations corresponding to the plurality of fixing holes, and the plurality of coupling members respectively extend the plurality of perforations and lock The plurality of fixing holes are fixed, and the base is clamped and fixed between the fixing member and the axial positioning shoulder.

The abutting member is a fixing ring.

A plurality of positioning notches are disposed on a periphery of one of the air guiding openings of the outer frame, and the positioning pin is provided with a plurality of positioning protrusions corresponding to the positioning notch, and the positioning protrusions are engaged with the positioning notch.

The locating hole of the outer frame is provided with a plurality of fastening slots, and the base is provided with a plurality of elastic buckles corresponding to the fastening slots, and the elastic buckles are fastened to the fastening slots.

The maximum outer diameter of the base of the damper fan is not greater than the minimum inner diameter of the outer frame, and preferably fits the radial buffer gap formed between the outer frame and the base, when the damper fan is applied In all kinds of electronic systems, even if the vibration is generated by the rotation of the fan wheel, it can be used. The radial buffer gap greatly reduces the vibration transmitted to the outer frame via the base to achieve the effects of avoiding noise and improving the service life of the electronic system.

〔this invention〕

1‧‧‧Fan frame

11‧‧‧Front frame

11a‧‧‧ hollow frame

11b‧‧‧Connecting parts

11c‧‧‧Resistance

111‧‧‧air guide

112‧‧‧air guide

113‧‧‧ Diversion channel

114‧‧‧Positioning holes

115‧‧‧Axial positioning shoulder

12‧‧‧ Pedestal

12a‧‧‧ body

12b‧‧‧Connecting parts

121b‧‧‧ Periphery

End of 122b‧‧‧

12c‧‧‧Resistance

2‧‧‧Drive components

3‧‧‧fan wheel

41‧‧‧Snap Department

42‧‧‧Fixed holes

43‧‧‧Fixed parts

431‧‧‧Perforation

44‧‧‧Connected parts

451‧‧‧ Positioning gap

452‧‧‧ positioning bumps

461‧‧‧Snap slot

462‧‧‧Flexible clasps

5‧‧‧ cushioning parts

D1‧‧‧minimum inner diameter

D2‧‧‧Maximum outer diameter

D‧‧‧ radial buffer gap

[study]

9‧‧‧fan

91‧‧‧Frame

92‧‧‧ Ribs

93‧‧‧Base frame

94‧‧‧fan wheel

95‧‧‧Rubber cylinder

96‧‧‧Chassis

Figure 1 is a combined cross-sectional view of a conventional fan.

Fig. 2 is an exploded perspective view of the damper fan of the first preferred embodiment of the present invention.

Fig. 3 is a sectional view showing the combination of the damper fan of the first preferred embodiment of the present invention.

Fig. 4 is a partially enlarged cross-sectional view showing the damper fan of the first preferred embodiment of the present invention.

Fig. 5 is an exploded perspective view showing the base of the damper fan of the present invention fixed by a fixing member.

Fig. 6 is a sectional view showing the combination of the base of the damper fan of the present invention fixed by a fixing member.

Fig. 7 is an exploded perspective view showing the base of the damper fan of the present invention fixed by positioning knurls.

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

Figure 9 is a sectional view showing the combination of the damper fan of the second preferred embodiment of the present invention.

Figure 10 is a partially enlarged cross-sectional view showing a damper fan of a second preferred embodiment of the present invention.

Fig. 11 is an exploded perspective view showing the base of the damper fan of the present invention fixed by an elastic clasp.

Fig. 12 is a partially enlarged cross-sectional view showing the base of the damper fan of the present invention fixed by an elastic clasp.

Figure 13 is an exploded perspective view of a damper fan in accordance with a third preferred embodiment of the present invention.

Figure 14 is a sectional view showing the combination of a damper fan according to a third preferred embodiment of the present invention.

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

The above and other objects, features and advantages of the present invention will become more apparent and obvious. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figures 2 and 3, the damper fan of the first preferred embodiment of the present invention includes at least one frame 1, a drive assembly 2 and a fan wheel 3. The fan frame 1 is a fan frame structure capable of introducing and extracting airflow, such as an axial flow fan frame, a centrifugal fan frame, or a horizontal convection fan frame. In the preferred embodiment, the fan frame 1 is axial flow type. a fan frame; the drive assembly 2 is coupled to the inside of the fan frame 1; the fan wheel 3 is rotatably coupled to the drive assembly 2 to drive the fan wheel 3 to rotate by the drive assembly 2.

The fan frame 1 can be a fan frame structure that can be accommodated in the driving assembly 2 and the fan wheel 3 and can be introduced and exported in an axial direction. The frame structure can be designed for various geometric shapes, for example, An angular shape, a circular shape, an elliptical shape, or the like; in the preferred embodiment, the fan frame 1 is a square frame structure.

The fan frame 1 includes an outer frame 11 and a pedestal 12. The outer frame 11 is provided with two air guiding openings 111 and 112. A guiding channel 113 is defined between the two air guiding openings 111 and 112. The two air guiding openings 111 are provided. The 112 can be used as the air inlet and the air outlet respectively. In the practical application, any air guiding port 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. The pedestal 12 is fixed to the positioning hole 114 and abuts the axial positioning shoulder 115. As shown in FIGS. 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, which is not greater than (ie, less than or equal to) the minimum inner diameter d1, wherein the base 12 preferably abuts the axially positioned shoulder through a cushioning member 5 The portion 115 is configured to provide an axial buffering shock absorbing function. Preferably, a radial buffer gap D is formed between the outer sidewall of the base 12 and the inner sidewall of the positioning hole 114 of the outer frame 11. The entire space of the outer side wall of the seat 12 and the inner side wall of the positioning hole 114 of the outer frame 11 may form the space or part of the space. Buffer space D.

Moreover, in the first preferred embodiment of the present invention, the outer frame 11 of the fan frame 1 is a hollow frame 11a, and the positioning hole 114 can be disposed in the outer frame 11 (ie, the hollow frame 11a). a guide hole 112 is formed on the inner side wall of the positioning hole 114 of the outer frame 11 to form the axial positioning shoulder 115; the base 12 of the fan frame 1 includes a body 12a, a plurality of connecting members 12b and a The abutting member 12c, one end of the plurality of connecting members 12b is connected to the seat body 12a, and the other end is connected to the abutting member 12c, so that the plurality of connecting members 12b can be located between the seat body 12a and the abutting member 12c; The plurality of connecting members 12b may be ribs or vanes (like fan-shaped ribs), and the abutting member 12c may be a fixing ring. Therefore, as shown in FIGS. 3 and 4, the base 12 is fixed to the positioning hole 114 by the abutting member 12c, and the abutting member 12c abuts the axial positioning shoulder 115, and the The radial buffer gap D is formed between the outer side wall of the abutting member 12c of the base 12 and the inner side wall of the positioning hole 114 of the outer frame 11 (i.e., the hollow frame 11a).

The fixing base of the damper fan 12 of the present invention and the positioning hole 114 of the outer frame 11 can be bonded, snapped, locked, etc. For example, the pedestal 12 can be adhesively fixed to the axially positioned shoulder 115, and the outer sidewall of the abutment 12c of the pedestal 12 and the inner sidewall of the locating hole 114 of the outer frame 11 are The radial buffering gap D; or, as shown in the third and fourth embodiments, the peripheral edge of one of the air guiding openings 112 of the outer frame 11 may be provided with a plurality of latching portions 41, and the base 12 may be forcibly coupled to the positioning holes. The base 12 is fastened by the plurality of latching portions 41 so that the base 12 can be fixedly fixed between the plurality of latching portions 41 and the axially positioned shoulder portion 115; As shown in FIG. 5 and FIG. 6 , a plurality of fixing holes 42 may be disposed in a periphery of one of the air guiding 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 a plurality of fixings. The plurality of through holes 431 of the hole 42 are formed by the plurality of coupling members 44 (such as screws), and the plurality of through holes 431 are respectively inserted into the plurality of fixing holes 42 to fix the fixing member 43 to the fixing member 43. The positioning hole 114 of the outer frame 11 further enables the base 12 to be clamped and fixed between the fixing member 43 and the axially positioned shoulder 115; or As shown in FIG. 7 and FIG. 8 , the peripheral edge of one of the air guiding openings 112 of the outer frame 11 can be provided with a plurality of positioning notches 451. The pedestal 12 is provided with a plurality of positioning protrusions 452 corresponding to the positioning notches 451. The positioning protrusions 452 can be utilized. The forced entry method quickly snaps into the positioning gap 451, thereby being reusable The engagement of the positioning protrusion 452 and the positioning notch 451 facilitates assembly of the outer frame 11 and the base 12 to provide better assembly convenience.

The driving assembly 2 is disposed on the base 12 of the fan frame 1. The fan wheel 3 is rotatably coupled to the driving assembly 2 for introducing airflow from an air guiding port 111 into the guiding channel 113, and then the airflow is self-contained. The other air guiding port 112 is derived, and the driving component 2 is of various structural designs that can drive the rotation of the fan wheel 3, for example, a steel sheet group, a stator coil or a circuit board, etc., and the detailed structural composition and operating principle thereof are in the field. The technical staff can understand, and will not repeat them.

Referring to Figures 9 and 10, the structural features and compositions of the damper fan of the second preferred embodiment of the present invention are substantially the same as those of the first preferred embodiment described above, and the difference is that the second preferred embodiment of the present invention For example, the outer frame 11 of the fan frame 1 includes a hollow frame 11a, a plurality of connecting members 11b, and an abutting member 11c. One end of the plurality of connecting members 11b is connected to the inner side wall of the hollow frame 11a, and the other end is The abutting member 11c is connected to the plurality of connecting members 11b between the hollow frame 11a and the abutting member 11c, wherein the plurality of connecting members 11b can be ribs or vanes (like fan-shaped ribs) The abutting member 11c can be a fixing ring; the base 12 of the fan frame 1 is a body 12a. The positioning hole 114 is disposed in the abutting member 11c of the outer frame 11 for directly forming the axial positioning shoulder 115 on the inner side wall of the positioning hole 114 of the abutting member 11c. The body 12a) is fixed to the positioning hole 114 and abuts the axial positioning shoulder 115 such that the outer side wall of the base 12 (ie, the seat body 12a) and the inner side wall of the positioning hole 114 of the abutting member 11c Forming the radial buffer gap D; wherein the fixing manner of the susceptor 12 and the positioning hole 114 of the outer frame 11 can be the same as the bonding, snapping, locking, etc. as described above. Those skilled in the art can understand that it will not be described.

The positioning holes 114 of the outer frame 11 of the fan frame 1 are preferably provided with a plurality of fastening slots 461. The base 12 of the fan frame 1 is preferably provided with a plurality of fastening slots 461. An elastic clasp 462, the elastic clasp 462 can be fastened to the fastening groove 461; The susceptor 12 can be quickly fastened to the fastening groove 461 of the outer frame 11 by the elastic buckle 462 to achieve the positioning effect of improving the assembly convenience and preventing the susceptor 12 from falling off in the axial direction.

Referring to Figures 13, 14 and 15, the structural features and composition of the damper fan of the third preferred embodiment of the present invention are substantially the same as those of the preferred embodiments disclosed in Figures 5 and 6, respectively, in that the difference is In the third preferred embodiment of the present invention, the base 12 of the fan frame 1 omits the abutting member 12c; thereby, the base 12 is coupled with one end of the plurality of connecting members 12b not connected to the base 12a. The positioning hole 114, and a peripheral edge 121b of one of the plurality of connecting members 12b (as shown in FIG. 15) abuts the axial positioning shoulder 115, and one of the one ends of the plurality of connecting members 12 The radial buffer gap D is formed between the end 122b and the inner side wall of the positioning hole 114 of the outer frame 11 (ie, the hollow frame 11a); wherein the base 12 is fixed in the same manner as the positioning hole 114 of the outer frame 11 For the above-mentioned bonding, snapping, locking, ..., etc., those skilled in the art can understand and will not be described.

According to the damper fan disclosed in the above preferred embodiments of the present invention, since the maximum outer diameter d2 of the susceptor 12 is not greater than the minimum inner diameter d1 of the outer frame 11, the susceptor 12 is only in the axial direction. The outer frame 11 is fixed; thereby, when the damper fan of the present invention is applied to various electronic systems, and the driving assembly 2 disposed on the susceptor 12 is driven to rotate to generate vibration, The transmission path of the vibration is effectively blocked, and the radial buffer gap D is preferably used to greatly reduce the vibration transmitted to the outer frame 11 via the base 12, so that the vibration situation can be effectively avoided, thereby improving the vibration situation. The operational stability of the electronic system and the reduction of noise; in particular, when the fan frame 1 of the damper fan of the present invention is preferably indirectly coupled to the casing of the electronic system through a cushioning member (such as an elastic buffering member such as rubber) With the design of the radial buffer gap D, it will have more significant cushioning and shock absorption effects, so as to avoid noise and improve the service life of the electronic system.

Although the present invention has been disclosed by the above-described preferred embodiments, it is not intended to limit the invention, and it is apparent to those skilled in the art without departing from the spirit and scope of the invention. The various modifications and variations of the embodiments are still within the technical scope of the invention. The scope of the invention is defined by the scope of the appended claims.

1‧‧‧Fan frame

11‧‧‧Front frame

11a‧‧‧ hollow frame

111‧‧‧air guide

112‧‧‧air guide

113‧‧‧ Diversion channel

114‧‧‧Positioning holes

115‧‧‧Axial positioning shoulder

12‧‧‧ Pedestal

12a‧‧‧ body

12b‧‧‧Connecting parts

12c‧‧‧Resistance

2‧‧‧Drive components

3‧‧‧fan wheel

41‧‧‧Snap Department

5‧‧‧ cushioning parts

Claims (12)

A damper fan includes: a frame, an outer frame and a pedestal, wherein the outer frame is provided with two air guiding openings, and a guiding channel is disposed between the two air guiding ports, and the outer frame is provided with a positioning hole, The base is fixed to the positioning hole, the inner side wall of the positioning hole of the outer frame has a minimum inner diameter, and the outer side wall of the base has a maximum outer diameter, the maximum outer diameter is smaller than the minimum inner diameter; a driving component, setting a pedestal of the fan frame; and a wheel rotatably coupling the driving component; wherein a radial buffer gap is formed between an outer sidewall of the pedestal and an inner sidewall of the locating hole of the outer frame. The damper fan of claim 1, wherein the locating hole is provided with an axially positioned shoulder that abuts the axially positioned shoulder. A damper fan according to claim 2, wherein the base abuts the axially positioned shoulder indirectly through a cushioning member. According to the damper fan of claim 2, the outer frame of the fan frame is a hollow frame, and the positioning hole is disposed at a periphery of one of the air guiding ports of the outer frame, and the base of the fan frame comprises a body, a plurality of connecting members and an abutting member, wherein one end of the plurality of connecting members is connected to the base body, and the other end is connected to the abutting member, and the base is fixed to the positioning hole by the abutting member, and the base is abutted The piece abuts against the axially positioned shoulder, and the radial buffering gap is formed between the outer side wall of the abutting member of the base and the inner side wall of the positioning hole of the outer frame. The damper fan of claim 2, wherein the outer frame of the fan frame comprises a hollow frame body, a plurality of connecting members and an abutting member, and one end of the plurality of connecting members is connected to the inner side wall of the hollow frame body. The other end is connected to the abutting member, the base of the frame is a body, the positioning hole is disposed on the abutting member of the outer frame, and the inner side wall of the positioning hole of the abutting member forms the axially positioned shoulder. The seat body is fixed to the positioning hole and abuts the axial positioning shoulder, the outer side of the seat body The radial buffer gap is formed between the wall and the inner side wall of the locating hole of the abutment. The absorbing fan of the second aspect of the invention, wherein the outer frame of the frame is a hollow frame, and the positioning hole is disposed at a periphery of one of the air guiding openings of the outer frame, wherein the base of the frame comprises a body and a plurality of connecting members, one end of the plurality of connecting members of the base is coupled to the positioning hole, and a peripheral edge of one end of the plurality of connecting members abuts the axial positioning shoulder, and one end of the plurality of connecting members The radial buffer gap is formed between an end and an inner side wall of the positioning hole of the outer frame, and the other end of the plurality of connecting members is connected to the base. A damper fan according to claim 2, 3, 4, 5 or 6, wherein the base is adhesively fixed to the axially positioned shoulder. The damper fan of claim 2, 3, 4, 5 or 6 wherein the outer frame is provided with a plurality of latching portions, the plurality of latching portions snapping the pedestal, and the pedestal is restrained Fixed between the plurality of snap portions and the axially positioned shoulder. The damper fan of claim 2, 3, 4, 5 or 6 wherein the outer frame is provided with a plurality of fixing holes, the outer frame is combined with a fixing member, and the fixing member is provided with a plurality of fixing holes corresponding thereto. The plurality of through holes respectively extend through the plurality of through holes and are locked to the plurality of fixing holes, and the base is clamped and fixed between the fixing member and the axially positioned shoulder. A damper fan according to claim 4 or 5, wherein the abutting member is a fixing ring. According to the damper fan of claim 1, 2, 3, 4 or 5, wherein one of the air guiding openings of the outer frame is provided with a plurality of positioning notches, and the pedestal is provided with a plurality of positioning protrusions corresponding to the positioning notches. The positioning protrusion snaps into the positioning gap. The damper fan of the first, second, third, fourth or fifth aspect of the patent application, wherein the positioning hole of the outer frame is provided with a plurality of fastening slots, and the base is provided with a plurality of elastic buckles corresponding to the fastening groove, The elastic clasp is fastened to the fastening slot.