CN2491634Y

CN2491634Y - Radiating fan

Info

Publication number: CN2491634Y
Application number: CN 01231404
Authority: CN
Inventors: 卢光达
Original assignee: SHIYI SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHIYI SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2001-07-12
Filing date: 2001-07-12
Publication date: 2002-05-15
Anticipated expiration: 2011-07-12

Abstract

Provided is a thermal fan which is mainly composed of a base and a wind-leaf main body. Besides a proper position of the inner wall of a vertically hollow liner arranged on the base is provided with one or more magnetically hollow circular cylinder, a rotation support shaft is provided with a corresponding magnet ring which is in corresponding with a position of the lower half section of the magnetically hollow circular cylinder. When the rotation support shaft is sleeved into the vertically hollow liner, the wind-leaf main body can be tightly sleeved in the based provided with a circuit board and a silicon sheet set because of a state that the rotation support shaft is constantly pulled downwards. Besides, a position adjacent to the bottom end of the rotation support shaft is also sleeved with a round fastening sheet capable of location limitation, and a pin-point end bottom arranged on the rotation support shaft is collided on a closed supporting baffle additionally arranged the bottom end of the vertically hollow liner, thereby after the assembling of the components, a novel thermal fan capable of being additionally arranged with a rotation bearing and effectively decreasing rotating noise can be formed.

Description

Radiation fan

Technical field

The utility model relates to a kind of radiation fan, relates in particular to a kind of the need and installs swivel bearing separately additional at the set rotation back shaft of wind blade main body place, and can obtain the extremely low heat sinking fan of noise.

Background technique

Present existing radiation fan, for the set rotation back shaft of wind blade main body stably is installed in the upright hollow sleeve of pedestal, and can produce the stable rotation effect, so all need being provided with one or more, this inner appropriate position of upright hollow sleeve letter can fasten fixed swivel bearing for this rotation support sleeve.But because of this swivel bearing is to form by basic mechanical realization, that is to say, each inter-module of this swivel bearing is the close structure that closes that is abutted against mutually, so in a single day be somebody's turn to do when rotating back shaft generation turning effort, promptly can produce either large or small noise.

In addition, because this radiation fan all is used in the general computer equipment, so if computer equipment produces the words of noise for a long time, then be bound to make the user of this computer equipment to produce greatest puzzlement, so how to lower the Rotation Noise of this radiation fan effectively, be to become extremely important main subject topic between industry.

Though, have the dealer by the improvement this swivel bearing drive mechanism to reduce its issuable Rotation Noise, but rub between the issuable member of institute in the time of still can't breaking away from its rotation because of the swivel bearing of this mechanical type transmission, so the reduction effect of its noise is still very limited.

Summary of the invention

The purpose of this utility model provides a kind of radiation fan, makes its rotation back shaft not need to establish in addition swivel bearing, to reduce the fan Rotation Noise of heat radiation wind.

Another purpose of the utility model provides a kind of radiation fan, and this radiation fan can be assembled simpler and easy and easily.

In order to achieve the above object, the utility model provides a kind of radiation fan, constituted by a pedestal and a wind blade main body, this pedestal is that the plate by suitable shape is constituted, the middle position of this plate is provided with a upright hollow sleeve that connects, and the root edge of this upright hollow sleeve is set as the ladder positioning ring groove of tool than large diameter, and this upright hollow sleeve outside is arranged with the tool suitably circuit board and the silicon steel plate group of size respectively in addition; This wind blade main body, comprise a top and be closed shape and the internal diameter upright hollow circular cylinder big than silicon steel plate group external diameter, the outboard peripheries of this hollow circular cylinder is equipped with a plurality of leaf blades, the inner wall sleeve of this hollow circular cylinder is provided with the internal diameter magnetic hollow cylinder big slightly than this silicon steel plate group external diameter, this wind blade main body can cover this silicon steel plate group fully by the hollow circular cylinder of this tool magnetic hollow cylinder, the inboard centre of other the set roof of this hollow circular cylinder is provided with one, and suitably extension and bottom are the pointed rotation back shaft of circle downwards, when this hollow circular cylinder covers this silicon steel plate group, can make this rotation back shaft suitably extend along the central axis of the set upright hollow sleeve of this pedestal; The inwall appropriate position of the set upright hollow sleeve of this pedestal is equipped with one or more magnetic hollow circuit cylinder, this rotation back shaft can produce the magnet ring of downward repulsive interaction effect with this in that lower semisection place that should the magnetic hollow circuit cylinder is arranged with one or more respectively to the magnetropism hollow circuit cylinder, when this rotation back shaft is inserted in this upright hollow sleeve, the state that can make this wind blade main body be able to be pulled down because of this rotation back shaft perseverance closely is set on this pedestal with circuit board and silicon steel plate group, this rotation back shaft is arranged with one at positon of near bottom can be by the circular card stator of this ladder positioning ring groove restriction location, making this wind blade main body be able to be set as one externally with this pedestal work, conflicts above the sealing supporting baffle of being established in addition in this upright hollow sleeve bottom in the pointed bottom of the circle of this rotation back shaft.So upright via above-mentioned component groups, can form a radiation fan that does not need to install swivel bearing separately additional and can obtain low Rotation Noise effect by the floating principle of magnetic.

The utility model has the advantages that: because the radiation fan that the utility model disclosed does not need to add separately the swivel bearing that rotates smoothly for this rotation back shaft, and this wind blade main body is also only conflicted above the set sealing supporting baffle of this pedestal with pointed bottom of circle of this rotation back shaft, so very lacking under the situation of the mutual collision friction of member, the utility model can reach the effect of effective reduction Rotation Noise; And, the utility model is by the corresponding magnet ring on magnetic hollow circuit cylinder that is divided into the set upright hollow sleeve inwall of pedestal place and the set rotation back shaft of this wind blade main body, make this wind blade main body be produced repulsive force that perseverance pulls down to be set on this pedestal, and then do not need to establish in addition the structure of swivel bearing by this rotation back shaft, so that this wind blade main body is able to reach the effect that reduces this radiation fan Rotation Noise by the floating principle of magnetic.In addition, this upright hollow sleeve be set to can with the fixing structure of base-separation so that the assembly working of this radiation fan is reached simpler and easy and effect easily.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated:

Fig. 1 is the organigram of the utility model radiation fan;

Fig. 2 is the operating principle schematic representation of radiation fan shown in Figure 1;

Fig. 3 is another embodiment's organigram of the disclosed radiation fan of the utility model;

Fig. 4 is another spacing latching structure schematic representation of the set circular card stator of the utility model.

Embodiment

See also shown in Figure 1, radiation fan of the present utility model, constituted by a pedestal 10 and a wind blade main body 20, this pedestal 10 wherein, except the plate 11 by suitable shape is constituted, the central position of this plate is provided with the upright hollow sleeve 12 of this plate 11 of perforation, and the bottom of this upright hollow sleeve 12 is provided with the ladder positioning ring groove 13 that an internal diameter extends more laterally, and this upright hollow sleeve 12 outsides are arranged with a tool suitably big or small circuit board 14 and silicon steel plate group 15 respectively in addition.

And this wind blade main body 20, be closed shape and its internal diameter than the big upright hollow circular cylinder 21 of these silicon steel plate group 15 set external diameters except comprising a top, the outboard peripheries of this hollow circular cylinder 21 is equipped with a plurality of leaf blades 22, in addition, the inner wall sleeve of this hollow circular cylinder 21 is provided with the internal diameter magnetic hollow cylinder 23 big slightly than these silicon steel plate group 15 external diameters, and this wind blade main body 20 can be covered this silicon steel plate group 15 fully by the hollow circular cylinder 21 of this tool magnetic hollow cylinder 23; The inboard centre of other 21 walls 211 of this hollow circular cylinder is provided with one, and suitably extension and bottom are the pointed rotation back shaft 24 of circle downwards, when this hollow circular cylinder 21 is covered this silicon steel plate group 15, this rotation back shaft 24 is suitably extended along the central axis of these pedestal 10 set upright hollow sleeves 12.

The inwall appropriate position of these pedestal 10 set upright hollow sleeves 12 is except being equipped with one or more magnetic hollow circuit cylinder 16 in addition, this rotation back shaft 24 also is being arranged with one or more can produce downward repulsive interaction with this to magnetropism hollow circuit cylinder 16 corresponding magnet ring 241 respectively to lower semisection place that should magnetic hollow circuit cylinder 16, when this rotation back shaft 24 is inserted in this upright hollow sleeve 12, the state that can make this wind blade main body 20 be able to be pulled down because of these rotation back shaft 24 perseverances closely is set on this pedestal 10 with circuit board 14 and silicon steel plate group 15, in addition, these rotation back shaft 24 positon of near bottom are arranged with one can be by the circular card stator 25 of these ladder positioning ring groove 13 restriction location, and the pointed bottom of the circle of this rotation back shaft 24 is on the sealing supporting baffle 30 that conflict establishes in addition in these upright hollow sleeve 12 bottoms, so the group via above-mentioned member is upright, can form the new and improved structure of a radiation fan.

As for aufbauprinciple of the present utility model then as shown in Figure 2.Because this magnetic

hollow circuit cylinder

16 and 241 magnetic of its pairing magnet ring are the state of mutual repulsion, that is to say, the magnetic that these magnetic hollow circuit cylinder 16 outer rims are had is to have identical magnetic with these magnet ring 241 outer rims, in case so when these wind blade main body 20 set rotation back shafts 24 were inserted in the set upright hollow sleeve 12 of this pedestal 10, this rotation back shaft 24 promptly can be forever and the structure that never touches of 12 formation of this upright hollow sleeve.In addition, because of this magnet ring 241 is set at and its lower semisection place to magnetropism hollow circuit cylinder 16, so this rotation back shaft 24 promptly can be because of the situation of the downward push-and-pull of being property of magnetic repulsive force effect of 241 of this magnetic hollow circuit cylinder 16 and this magnet rings, so when this wind blade main body 20 and this pedestal 10 are lived when being set as one, this wind blade main body 20 promptly can closely be covered on the set silicon steel plate group 15 of this pedestal 10 by dilatory downwards state because of this rotates back shaft 24.

Certainly, cause the phenomenon that causes with 10 set upright hollow sleeves 12 disengagings of this pedestal because of rotary centrifugal force is excessive for fear of this wind blade main body 20, the positon of near bottom of this rotation back shaft 24 must be provided with one separately can be in order to the circular card stator 25 of blocking location, in addition, in order to make this wind blade main body 20 can produce the stable rotation effect, must conflict above the sealing supporting baffle 30 of establishing in addition in these upright hollow sleeve 12 bottoms in this rotation back shaft 24 set pointed bottoms of circle, so when this wind blade main body 20 was rotated because of the work of this silicon steel plate group 15, this rotation back shaft 24 promptly can reach the effect of hanging down Rotation Noise by the floating structure of magnetic.

In order to reach the effect of more convenient assembling, the utility model discloses second embodiment as shown in Figure 3 separately in addition.It is that the upright hollow sleeve 12 that first embodiment is disclosed is set as the structure that separates with this pedestal 10, this upright hollow sleeve 12 can be earlier and the set rotation back shaft 24 of this wind blade main body 20 be assembled into one, the central position of these pedestal 10 set plates 11 is provided with the suitably annular fixing column 11 ' of height of a tool in addition in addition, this upright hollow sleeve 12 and this wind blade main body 20 set rotation back shafts 24 are lived and are set as one, and after the outside of this upright hollow sleeve 12 is arranged with silicon steel plate group 15 and circuit board 14, the bottom of this upright hollow sleeve letter 12 directly can be installed on this annular fixing column 11 ', because this annular fixing column 11 ' has suitable height, so when these upright hollow sleeve 12 bottoms are fixed on this annular fixing column 11 ', then just in time can conflict in set plate 11 tops, this annular fixing column 11 ' bottom in these rotation back shaft 24 set pointed bottoms of circle, can stablize the radiation fan of rotation to form one.

In addition, no matter be first embodiment or second embodiment, the bottom of its upright hollow sleeve 12 is equipped with one can supply the spacing ladder positioning ring groove 13 of these circular card stator 25 fastenings, but the utility model also can not need add this ladder positioning ring groove 13, and directly by being located at the root edge of the magnetic hollow circuit cylinder 16 at place, below of this upright hollow sleeve 12, so that the spacing fastening function of itself and this circular card stator 25 to be provided, promptly as shown in Figure 4.

In sum, because the radiation fan that the utility model disclosed does not need to add separately the swivel bearing that rotates smoothly for this rotation back shaft, and this wind blade main body is also only conflicted above the set sealing supporting baffle of this pedestal with pointed bottom of circle of this rotation back shaft, so very lacking under the situation of the mutual collision friction of member, the utility model is the effect that can reach effective reduction Rotation Noise; In addition because of present on the market and look into the cooling fan structure of no any identical or like configurations, so the utility model is to meet novel patent novelty, practicability requirement fully.

Claims

1. a radiation fan is made of a pedestal and a wind blade main body, it is characterized in that:

This pedestal is that the plate by suitable shape is constituted, the middle position of this plate is provided with a upright hollow sleeve that connects, and the root edge of this upright hollow sleeve is set as the ladder positioning ring groove of tool than large diameter, and this upright hollow sleeve outside is arranged with the tool suitably circuit board and the silicon steel plate group of size respectively in addition;

This wind blade main body, comprise a top and be closed shape and the internal diameter upright hollow circular cylinder big than silicon steel plate group external diameter, the outboard peripheries of this hollow circular cylinder is equipped with a plurality of leaf blades, the inner wall sleeve of this hollow circular cylinder is provided with the internal diameter magnetic hollow cylinder big slightly than this silicon steel plate group external diameter, this wind blade main body can cover this silicon steel plate group fully by the hollow circular cylinder of this tool magnetic hollow cylinder, the inboard centre of other the set roof of this hollow circular cylinder is provided with one, and suitably extension and bottom are the pointed rotation back shaft of circle downwards, when this hollow circular cylinder covers this silicon steel plate group, can make this rotation back shaft suitably extend along the central axis of the set upright hollow sleeve of this pedestal;

The inwall appropriate position of the set upright hollow sleeve of this pedestal is equipped with one or more magnetic hollow circuit cylinder, this rotation back shaft can produce the magnet ring of downward repulsive interaction effect with this in that lower semisection place that should the magnetic hollow circuit cylinder is arranged with one or more respectively to the magnetropism hollow circuit cylinder, when this rotation back shaft is inserted in this upright hollow sleeve, the state that can make this wind blade main body be able to be pulled down because of this rotation back shaft perseverance closely is set on this pedestal with circuit board and silicon steel plate group, this rotation back shaft is arranged with one at positon of near bottom can be by the circular card stator of this ladder positioning ring groove restriction location, making this wind blade main body be able to be set as one externally with this pedestal work, conflicts above the sealing supporting baffle of being established in addition in this upright hollow sleeve bottom in the pointed bottom of the circle of this rotation back shaft.

2. radiation fan according to claim 1, it is characterized in that: the set upright hollow sleeve of this pedestal is set to and the separable structure of this pedestal, the central position of this plate is provided with the suitably annular fixing column of height of a tool in addition, the set rotation back shaft work of this upright hollow sleeve and this wind blade main body is set as one, and behind this upright hollow sleeve sheathed silicon steel plate group in the outside and circuit board, the bottom of this upright hollow sleeve can be installed on this annular fixing column, just in time be conflicted above the plate of this annular fixing column bottom in the pointed bottom of circle of this rotation back shaft.

3. radiation fan according to claim 1 and 2, it is characterized in that: the set upright hollow sleeve of this pedestal bottom also can not need add the ladder positioning ring groove, and directly by being located at the magnetic hollow circuit cylinder root edge at place, below of this upright hollow sleeve, so that the spacing fastening function of itself and this circular card stator to be provided.