Abstract:
The present invention concerns a filter structure attached via magnets. The filter structure includes a filter body and a magnetic unit. The magnetic unit is attached to the filter body. According to the needs of the user, the filter structure can be disposed or added to any desired place of a device. The filter structure prevents dust and particles in the air from entering the device. Thereby, the device may continue to work normally.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates to a filter structure, and more particularly, to a filter structure attached by magnets so that the filter can be easily mounted and dismounted.  
         [0003]     2. Description of the Related Art  
         [0004]     A heat sink device of a host generally takes heat from the host through an airflow produced by a fan to keep the host working normally. But there is a large number of dust and particles in the airflow. There is also a lot of conductible material in the dust and particles. If such material enters into the host on a large scale, the host will be shut down. Therefore, a filter is usually disposed in the host for filtering out the dust and particles to prevent the dust and particles from building up in the host. As a result of such filtering, the host can work normally.  
         [0005]     A filter structure of the prior art, as shown in  FIG. 1 , includes a filter body  10   a,  a fan  20   a,  and a plurality of screws  30   a.  The filter body  10   a  includes a frame  11   a  and a plurality of meshes  12   a.  The meshes  12   a  are integrated with the frame  11   a.  The frame  11   a  has a plurality of through holes  13   a  for fixing. The fan  20   a  has a plurality of corresponding fixing holes  21   a.  The screws  30   a  penetrate the through holes  13   a  and the fixing holes  21   a  for fixing the filter body  10   a  to the fan  20   a.  The filter body  10   a  filters the dust and the particles out through the meshes  12   a.  Air from outside should be filtered first through the filter body  10   a,  before then entering into the inner portion of the fan  20   a.    
         [0006]     However, the filter structure of the prior art is limited in its applications. The filter structure only can be disposed on a device having a plurality of fixing holes  21   a  via a plurality of corresponding screws  30   a.  Therefore, the filter structure can&#39;t be disposed on another device if a user so wishes.  
       SUMMARY OF THE INVENTION  
       [0007]     It is therefore a principal object of the present invention to provide a filter structure that is attached via magnets. According to the needs of a user, the filter structure can be disposed or added to any desired place on a device. The filter structure prevents dust and particles in the air from entering into the device in order to keep the device working normally. The present invention has been accomplished to eliminate the aforesaid problem.  
         [0008]     To achieve the above object, one feature of the present invention is provided for a filter structure attached via magnets, that includes a filter body and a magnetic unit. The magnetic unit is attached to the filter body.  
         [0009]     To achieve the above object, another feature of the present invention is provided for a filter structure attached via magnets, that includes a mainframe, a magnetic unit and a filter body. The mainframe has at least one radiating portion. The filter body is magnetically attached to at least one corresponding radiating portion of the mainframe through the magnetic unit.  
         [0010]     To provide a further understanding of the invention, the following detail description illustrates embodiments and examples of the invention, this detailed description being provided only for illustration of the invention. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0011]     The drawings included herein provide a further understanding of the invention. A brief introduction of the drawings is as follows:  
         [0012]      FIG. 1  is a composition view of a conventional filter structure attached with a fan.  
         [0013]      FIG. 2  is a composition view of the first preferred embodiment of the present invention.  
         [0014]      FIG. 3  is composition view of the first preferred embodiment of the present invention attached with a sideboard of a casing.  
         [0015]      FIG. 4  is a composition view of the second preferred embodiment of the present invention.  
         [0016]      FIG. 5  is composition view of the second preferred embodiment of the present invention attached with a fan.  
         [0017]      FIG. 6  is a composition view of the third preferred embodiment of the present invention.  
         [0018]      FIG. 7  is a composition view of the fourth preferred embodiment of the present invention.  
         [0019]      FIG. 8  is a composition view of the fifth preferred embodiment of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS  
       [0020]     Referring now to the drawings wherein the showings are for purposes of illustrating preferred embodiments of the present invention only, and not for purposes of limiting the same.  
         [0021]     Referring to the  FIG. 2 . The present invention provides a filter structure attached via magnets. The filter structure includes a filter body  10  and a magnetic unit  20 .  
         [0022]     The filter body  10  has a frame  11  and a plurality of meshes  12 . The frame  11  assumes a square-shape. The meshes  12  are integrated with the frame  11 . The meshes  12  have a function of allowing ventilation and filtering.  
         [0023]     The frame  11  has at least one receiving portion  13  at each corner thereof for receiving the magnetic unit  20 . The receiving portion  13  has two openings respectively at two ends thereof.  
         [0024]     The magnetic unit  20  is a plurality of permanent magnets. Each of the permanent magnets assumes a circle-shape. Each of the permanent magnets is pressed in and received in the corresponding receiving portion  13 , so that the magnetic unit  20  combines with the filter body  10 . Both a front end and a rear end of the filter body  10  can be magnetically attached to a desired setting place or device through the magnetism of the magnetic unit  20 .  
         [0025]     Referring to  FIG. 3 . A sideboard  30  of a casing is made of iron. The sideboard  30  has a radiating portion  31  so that air may enter. The radiating portion  31  assumes a square-shape. One side of the filter body  10  is magnetically attached to an outer surface of the sideboard  30  through the magnetic unit  20 , so that the sideboard  30  forms a filter structure. When the air outside of the sideboard  30  wants to enter the casing, it will pass through the meshes  12  of the filter body  10  first. After filtering the dust and particles through the meshes  12 , the air can pass through the radiating portion  31  of the sideboard  30  and enter the casing. Therefore, the filter body  10  prevents dust from entering the inner portion of the casing. After a period of time, the meshes will store up a large number of dust and particles. At that time, the filter body  10  should be removed from the sideboard  30  for cleaning. After cleaning, the filter body  10  could be magnetically attached to the sideboard  30  again. Therefore, the filter body  10  with the magnetic unit  20  can mounted on or dismounted from the sideboard  30  quickly and easily.  
         [0026]     Referring to  FIG. 4 . The filter structure attached via magnets includes a filter body  40  and a magnetic unit  50 . The filter body  40  has a frame  41  and a plurality of meshes  42 . The meshes  42  are integrated with the frame  41  for filtering air. The frame  41  is made of a magnet or an electromagnet. The magnetic unit  50  is integrated with the frame  41  of the filter body  40 . The filter body  40  can magnetically attach to an iron setting place or an iron device through the magnetic unit  50 .  
         [0027]     Referring to  FIG. 5 . The filter body  40  can be attached to a fan  60 . The fan  60  includes an iron frame  61 . The frame  61  has a front side and a corresponding rear side. The frame  61  defines an air inletting face  62  at the front side thereof. The frame  61  defines an air exhausting face  63  at the rear side thereof. The filter body  40  attaches to the air inletting face  62  of the fan  60  at one side thereof. The dust and particles in air are filtered through the meshes  42  of the filter body  40 . The meshes  42  stop dust and particles from entering the fan  60 , so that the fan  60  can turn smoothly. For the same reason, the filter body  40  can also be attached to the air exhausting face  63  for filtering out the dust and particles in air.  
         [0028]     Referring to  FIG. 6 . The magnetic unit  20  includes four magnets. Each of four magnets assumes a L-shaped. And each of four magnets mounts to each corner of the filter body  10  by the way of inlaying. The filter body  10  magnetically attach to the radiating portion  31  of the sideboard  30  through the magnetism of the magnetic unit  20 .  
         [0029]     Referring to  FIG. 7 . The filter structure attached via magnets includes a mainframe  70 , a magnetic unit  20  and a filter body  10 . The mainframe  70  could be a power supply, a redundant power supply, a personal computer, an industrial personal computer, a server, an uninterruptible power supply, an external redundant array of independent disk box, a hard disk external box, an external CD-ROM box, a key board, a heat-sink plate of a laptop computer, a projector, or a medical measuring/testing equipment. In this preferred embodiment, the mainframe  70  is a personal computer. The mainframe  70  has a casing  71 . The casing  71  has four receiving portions  72  and a radiating portion  711 . The four receiving portions  72  are near the setting place of the radiating portion  711 . Each of the four receiving portions  72  is circle-shaped. Each of the four receiving portions  72  has two openings respectively at two ends thereof.  
         [0030]     The magnetic unit  20  includes four permanent magnets. Each of the four permanent magnets are respectively pressed in or received in the corresponding receiving portion  72 , so that the magnetic unit  20  can be combined with the casing  71  of the mainframe  70 .  
         [0031]     The frame  11  of the filter body  10  is made of iron or inlaid with at least one piece of iron therein, so that the filter body  10  can be magnetically attached to the corresponding radiating portion  711  of the mainframe  70 .  
         [0032]     Referring to  FIG. 8 . The casing  71  is made of a magnet or an electromagnet. The magnetic unit  80  is integrated with the casing  71  of the mainframe  70 . The filter body  10  with the iron frame  11  can be magnetically attached to the corresponding radiating portion  711  of the mainframe  70  through the magnetism of the magnetic unit  80 .  
         [0033]     Therefore, the filter structure of the present invention can be more easily and quickly mounted on and dismounted from a device than the filter structure of the prior art. It is unnecessary to set a fixing hole for the filter structure of the present invention. Instead, the filter structure can be directly magnetically attached to a device which needs a filter structure. The device could be a casing of a power supply, a redundant power supply, a personal computer, an industrial personal computer, a server, an uninterruptible power supply, an external redundant array of independent disk box, a hard disk external box, an external CD-ROM box, a key board, a heat-sink plate of a laptop computer, a projector, a medical measuring/testing equipment or other products having a filter. As such, we can say that the present invention has a wide range of applications. It provides the user the freedom to dispose the filter upon any desired place. Furthermore, it is easily dismounted for cleaning and has good adaptability. It is easily manufactured, so that the cost of manufacture is reduced.  
         [0034]     There has thus been described a new, novel and heretofore unobvious filter structure attached via magnets eliminating the aforesaid problem of the prior art. Furthermore, those skilled in the art will readily appreciate that the above description is only illustrative of specific embodiments and examples of the invention. The invention should therefore cover various modifications and variations made to the herein-described structure and operations of the invention, provided they fall within the scope of the invention as defined in the following appended claims.