Abstract:
An electric power supply device includes a cover secured on top of a housing. One or more fan members and nets are secured to a casing which has one or more openings aligned with the fan members. The casing is detachably secured to the housing for disengaging and fixing or replacing the fan members. One or more plates are secured to the casing for disposing switches and sockets. A handle is pivotally secured to the casing for carrying the casing and the fan members. One or more electric power supply devices may be received in a receptacle and coupled between electrical facilities.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an electric power supply device, and more particularly to an electric power supply device having a fan device that may be detached and that may be easily fixed or replaced with the other ones. 
     2. Description of the Prior Art 
     Typical electric power supply devices comprise one or more plugs and sockets provided therein and coupled to or between various electrical facilities, and/or comprise an electric circuit provided there in for stabilizing the electric power and for providing a stabilized electric power to the electrical facilities. The electric power supply devices may generate heat during operation, such that one or more fan devices are required to be provided and attached to each of the electric power supply devices for dissipating the heat that may be generated by the electric power supply device. However, the fan devices are fixed in the electric power supply device and may not be detached or disengaged from the electric power supply device, such that the fan device may not be easily fixed or replaced with the other one when the fan device is damaged or the like. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional electric power supply devices. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide an electric power supply device including a fan device that may be detached and that may be easily fixed or replaced with the other ones. 
     In accordance with one aspect of the invention, there is provided an electric power supply device comprising a housing including a front portion and an upper portion, a cover secured to the upper portion of the housing, a casing including at least one opening formed therein and including a front portion, at least one fan member secured to the casing and aligned with the opening of the casing, at least one net secured to the front portion of the casing for blocking the opening of the casing, and means for detachably securing the casing and thus the fan member to the cover and the housing. One or more electric power supply devices may be received in a receptacle and coupled between the electrical facilities. 
     The housing includes two side walls each having an upper front portion and an upper rear portion, the cover includes two flanges secured to the upper front portions of the side walls and includes two ears secured to the upper rear portions of the housing. The side walls each includes a front portion, the casing includes two side panels secured to the front portions of the side walls respectively. 
     The cover includes at least one front ear provided thereon, and at least one fastener is engaged with the casing and the front ear of the cover for detachably securing the casing and thus the fan member to the cover and the housing. 
     The fan member includes at least one cavity formed therein, the detachably securing means includes at least one lock nut received in the cavity of the fan member, and at least one fastener engaged through the net and the casing and the fan member and threaded with the lock nut for detachably securing the casing and thus the fan member to the cover and the housing. 
     The casing includes an extension extended therefrom, the electric power supply device further includes a plate, and means for securing the plate to the extension of the casing. The plate includes a switch and/or a socket provided thereon. 
     A handle is further pivotally secured to the casing. The detachably securing means includes two fasteners secured to the casing, the handle is pivotally secured to the fasteners with pivot pins. 
     Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a receptacle having two electric power supply devices in accordance with the present invention received in the receptacle; 
     FIG. 2 is a partial perspective view showing a coupling portion of the electric power supply device to the receptacle; 
     FIG. 3 is a partial exploded view of the electric power supply device; 
     FIG. 4 is an exploded view of the electric power supply device; and 
     FIG. 5 is a bottom perspective view illustrating the cover of the electric power supply device. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to the drawings, and initially to FIG. 1, illustrated is a receptacle  46  that may be provided for receiving one or more electric power supply devices in accordance with the present invention. For example, two electric power supply devices  47  are shown and received in the receptacle  46 . 
     Referring next to FIGS. 3-5, the electric power supply devices  47  each comprises a housing  1  including two side walls  10 ,  11 , and a cover  2  to be secured between the upper portions of the side walls  10 ,  11 . The side walls  10 ,  11  each includes a front portion having one or more holes  19 ,  20 ; and  21 ,  22  formed therein for receiving fasteners  9 ; and each includes a front upper portion having one or more holes  25 ,  26 ; and  27 ,  28  formed therein for receiving fasteners  9 ; and each includes a rear upper portion having one or more holes  23 ,  24  formed therein for receiving fasteners  9 . The cover  2  includes two flanges  14 ,  15  dependent downward from the front portion thereof and each having one or more holes  36 ,  37 ; and  34 ,  35  formed therein and aligned with the respective holes  25 ,  26 ; and  27 ,  28  of the housing  1  and for receiving the fasteners  9  which may be used for securing the cover  2  to the housing  1 . The cover  2  includes two ears  16 ,  17  dependent downward from the rear and side portions thereof and each having one or more holes  32 ,  33  formed therein and aligned with the respective holes  23 ,  24  of the housing  1  and for receiving the fasteners  9  which may also be used for securing the cover  2  to the housing  1 . The cover  2  further includes two ears  55 ,  57  dependent downward from the front portion thereof and each having one or more holes  56 ,  58  formed therein. 
     The electric power supply device  47  includes a fan device attached and secured to the front portion of the housing  1  and each having a casing  3  for receiving one or more fan members  8  therein. 
     The casing  3  includes two side panels  12 ,  13  each having one or more holes  39 ,  40 ; and  41 ,  42  formed therein and aligned with the respective holes  19 ,  20 ; and  21 ,  22  of the housing  1  and for receiving the fasteners  9  which may be used for securing the casing  3  to the housing  1 . 
     The casing  3  includes one or more openings  43  formed therein and communicating with the respective fan members  8  for allowing the air to flow into the respective fan members  8 . The casing  3  includes one or more holes  29  formed in the front portion thereof. The fan members  8  each includes one or more holes  38  formed therein and aligned with the respective holes  29  of the casing  3  and each includes one or more cavities  44  formed therein and communicating with the holes  38  thereof for receiving lock nuts  7  respectively. 
     One or more nets  4  are further provided and to be attached onto the front portion of the casing  3  and disposed in front of the respective openings  43  of the casing  3  for blocking and shielding the openings  43  of the casing  3  and thus the fan members  8  respectively. The nets  4  each includes one or more holes  30  formed therein for receiving fasteners  9 ,  45 ,  54  respectively which may secure the nets  4  and the casing  3  and the fan members  8  together. For example, two of the fasteners  45  are engaged through the holes  30  of the two nets  4  and the holes  29  of the casing  3  and the holes  38  of the fan members  8  and engaged or threaded with the screw holes or holes  56 ,  58  of the ears  55 ,  57  of the cover  3 , and may be threaded with the lock nuts  7 , so as to secure the nets  4  and the casing  3  and the fan members  8  together and so as to secure the fan device to the cover  3  and the housing  1 . The other two fasteners  54  are engaged through the other holes  30  of the two nets  4  and the other holes  29  of the casing  3  and the other holes  38  of the fan members  8  and are threaded with the lock nuts  7  for further solidly securing the nets  4  and the casing  3  and the fan members  8  together. 
     The electric power supply device  47  further includes a handle  5  attached thereto, for example, pivotally secured to the fasteners  45  with one or more pivot pins  6  such that the handle  5  may be rotated relative to the casing  3  about the pivot pins  6 . The handle  5  may be used for carrying the casing  3  and the fan members  8 . As shown in FIGS. 1,  2  and  4 , the casing  3  of the electric power supply device  47  includes an extension  18  extended therefrom and having a hole  31  formed therein for receiving the fastener  9  which may secure a plate  48  to the electric power supply device  47 . For example, the plate  48  may be secured to the receptacle  46  with fasteners, and the casings  3  of the electric power supply device  47  may be secured to the plate  48  of the receptacle  46  with the extension  18  and the fasteners  9 . One or more switches  52  and sockets  53  may be attached to the plate  48  for coupling to the other electrical facilities. Alternatively, the electric power supply devices  47  may each includes a plate  48  secured to the casing  3  for attaching or holding the switch(es)  52  and the socket(s)  53  in the plate(s)  48 . 
     In operation, as shown in FIG. 3, the cover  2  may be secured to the housing  1 . The nets  4  and the casing  3  and the fan members  8  may be secured together with the fasteners  45  and  9 , and may then be secured to the cover  2  and thus the housing  1  with the fasteners  54  and/or the lock nuts  7 . The fan members  8  may thus be easily disengaged from the cover  2  and the housing  1  by unthreading the fasteners  54  relative to the cover  2 . The fan members  8  may thus be easily cleaned or fixed or replaced with the other ones when the casing  3  and thus the fan members  8  are disengaged from the cover  2  and the housing  1 . 
     Accordingly, the electric power supply device in accordance with the present invention includes a fan device that may be detached and that may be easily fixed or replaced with the other ones. 
     Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.