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FIELD OF THE INVENTION 
       [0001]    The present invention relates to a metal fence post and the fence formed therefrom. 
       DESCRIPTION OF THE RELATED ART 
       [0002]    As shown in  FIG. 1 , large fences are generally made up of a plurality of mesh panels, the end of which are arranged to the fence posts disposed between the mesh panels through an fastening means. However, there exist lots of problems with such connection type between the fence and the fence post in use: 1. the inconvenience and the low installation efficiency resulted from the fastening means; 2. the insecurity caused by the dismountable fastening means; 3. the poor anti-corrosion ability of the fastening means easily leading to oxidation corrosion in the outdoors environments; and 4. the predefined locations on the fence post for connecting the fastening means leading to restrictions for the installation environment, especially for the low-lying areas. 
       SUMMARY OF THE INVENTION 
       [0003]    An object of the present invention is to provide a fence post that is convenient for assembling and hard to break. 
         [0004]    A further object of the present invention is to provide a fence that is convenient for assembling and difficult to break. 
         [0005]    In order to obtain one or more of these objects, the present invention provides a fence post in one aspect, comprising a first body provided with a first base part extending along the vertical direction for fixing to the fixed objects, wherein, the front end of the first base part comprises a left front end extending leftwards forming a first left side wing, and a right front end extending rightwards forming a first right side wing, whereby, certain parts of the first left side wing bend to form a plurality of first left hook parts distributed along one vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing; and certain parts of the first right side wing bend to form a plurality of first right hook parts distributed along another vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing. 
         [0006]    Preferably, the first body is made of a metal panel through a constant bending treatment. 
         [0007]    Preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction, more preferably, one after the other. 
         [0008]    In another broad aspect, the present invention provides a fence post, comprising a first body provided with a first base part extending along the vertical direction for fixing to the fixed objects and a second body, wherein, the front end of the first base part comprises a left front end extending leftwards forming a first left side wing, and a right front end extending rightwards forming a first right side wing, whereby, certain parts of the first left side wing bend to form a plurality of first left hook parts distributed along one vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing; and certain parts of the first right side wing bend to form a plurality of first right hook parts distributed along another vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing; thus the second body covering over the first left hook parts and the first right hook parts after the assembling of the first body and the second body, such that the openings of the first left hook parts and the first right hook parts are concealed under the second body. 
         [0009]    Preferably, the first base part is provided with a cavity internally. 
         [0010]    Preferably, the first body and the second body are respectively made of a metal panel through a constant bending treatment. 
         [0011]    Preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction. 
         [0012]    More preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction one after the other. 
         [0013]    In still another aspect, the present invention provides a fence post, comprising a first body provided with a first base part extending along the vertical direction for fixing to the fixed objects and a second body provided with a second base part extending along the vertical direction, wherein,
       the front end of the first base part comprises a left front end extending leftwards forming a first left side wing, and a right front end extending rightwards forming a first right side wing, whereby, certain parts of the first left side wing bend to form a plurality of first left hook parts distributed along a first vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing; and certain parts of the first right side wing bend to form a plurality of first right hook parts distributed along a second vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing;   and the second base part comprises a left back end extending leftwards forming a second left side wing, and a right back end extending rightwards forming a second right side wing, whereby, certain parts of the second left side wing bend to form a plurality of second left hook parts distributed along a third vertical line, each of which is provided with a rightward oriented opening positioned behind the second left side wing; and certain parts of the second right side wing bend to form a plurality of second right hook parts distributed along a fourth vertical line, each of which is provided with a leftward oriented opening positioned behind the second right side wing;   thus the second body covering over the first left hook parts and the first right hook parts after the assembling of the first body and the second body, such that the openings of the first left hook parts are concealed under the second left side wing, while the openings of the first right hook parts are concealed under the second right side wing, whereby, the first left hook parts and the second left hook parts are in an interlacing arrangement along the vertical direction, while the first right hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction.       
 
         [0017]    Preferably, the first body and the second body are respectively made of a metal panel through a constant bending treatment. 
         [0018]    Preferably, the first base part is provided with a cavity internally, the cross section of which is more preferably in a semicircular or hexagon shape. 
         [0019]    Preferably, the first body and the second body are provided with the same structure and are integrated along the opposite direction into a whole. 
         [0020]    Preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction, and the second left hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction, whereby, after the assembling of the first body and the second body, the first left hook parts and the second left hook parts are in an interlacing arrangement along the vertical direction, while the first right hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction. More preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction one after the other, while the second left hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction one after the other. 
         [0021]    In a fourth aspect, the present invention provides a fence comprising a plurality of fence units, each of which comprises a pair of fence posts disposed on either left or right side and a fence body arranged between the pair of fence posts. The fence post comprises a first body provided with a first base part extending along the vertical direction for fixing to the fixed objects, wherein, the front end of the first base part comprises a left front end extending leftwards forming a first left side wing, and a right front end extending rightwards forming a first right side wing, whereby, certain parts of the first left side wing bend to form a plurality of first left hook parts distributed along one vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing; and certain parts of the first right side wing bend to form a plurality of first right hook parts distributed along another vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing. After the fence body arranged to the pair of fence posts, the left side of the fence body hooks to the first right hook parts of the fence post on the left, and the right side of the fence body hooks to the first left hook parts of the fence post on the right. 
         [0022]    Preferably, the first body is made of a metal panel through a constant bending treatment. 
         [0023]    Preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction, more preferably, one after the other. 
         [0024]    Preferably, the fence body can be the wallboard, the metal mesh or the grating structures. 
         [0025]    In a fifth aspect, the present invention provides a fence comprising a plurality of fence units, each of which comprises a pair of fence posts disposed on either left or right side and a fence body arranged between the pair of fence posts. The fence post comprises a first body provided with a first base part extending along the vertical direction for fixing to the fixed objects and a second body, wherein, the front end of the first base part comprises a left front end extending leftwards forming a first left side wing, and a right front end extending rightwards forming a first right side wing, whereby, certain parts of the first left side wing bend to form a plurality of first left hook parts distributed along one vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing; and certain parts of the first right side wing bend to form a plurality of first right hook parts distributed along another vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing. After the fence body arranged to the pair of fence posts, the left side of the fence body hooks to the first right hook parts of the fence post on the left, and the right side of the fence body hooks to the first left hook parts of the fence post on the right, while the openings of the first left hook parts and the first right hook parts are concealed under the second body. 
         [0026]    Preferably, the first body and the second body are respectively made of a metal panel through a constant bending treatment. 
         [0027]    Preferably, the first base part is provided with a cavity internally, the cross section of which is more preferably in a semicircular or hexagon shape. 
         [0028]    Preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction, more preferably, one after the other. 
         [0029]    Preferably, the fence body can be the wallboard, the metal mesh or the grating structures. 
         [0030]    In a sixth aspect, the present invention provides a fence comprising a plurality of fence units, each of which comprises a pair of fence posts disposed on either left or right side and a fence body arranged between the pair of fence posts. 
         [0031]    The fence post comprises a first body provided with a first base part extending along the vertical direction for fixing to the fixed objects and a second body provided with a second base part extending along the vertical direction, wherein,
       the front end of the first base part comprises a left front end extending leftwards forming a first left side wing, and a right front end extending rightwards forming a first right side wing, whereby, certain parts of the first left side wing bend to form a plurality of first left hook parts distributed along a first vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing; and certain parts of the first right side wing bend to form a plurality of first right hook parts distributed along a second vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing;   and the second base part comprises a left back end extending leftwards forming a second left side wing, and a right back end extending rightwards forming a second right side wing, whereby, certain parts of the second left side wing bend to form a plurality of second left hook parts distributed along a third vertical line, each of which is provided with a rightward oriented opening positioned behind the second left side wing; and certain parts of the second right side wing bend to form a plurality of second right hook parts distributed along a fourth vertical line, each of which is provided with a leftward oriented opening positioned behind the second right side wing;   thus the second body covering over the first left hook parts and the first right hook parts after the assembling of the first body and the second body, such that the openings of the first left hook parts are concealed under the second left side wing, while the openings of the first right hook parts are concealed under the second right side wing, whereby, the first left hook parts and the second left hook parts are in an interlacing arrangement along the vertical direction, while the first right hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction. After the fence body arranged to the pair of fence posts, the second body covers over the first left hook parts and the first right hook parts such that the openings of the first left hook parts are concealed under the second left side wing, while the openings of the first right hook parts are concealed under the second right side wing, wherein, the first left hook parts and the second left hook parts are in an interlacing arrangement along the vertical direction one after the other at the left side of the fence post, while the first right hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction one after the other at the right side of the fence post. The left side of the fence body hooks to both the first right hook parts and the second right hook parts of the fence post on the left, and the right side of the fence body hooks to both the first left hook parts and the second left hook parts of the fence post on the right.       
 
         [0035]    Preferably, the first body and the second body are respectively made of a metal panel through a constant bending treatment. 
         [0036]    Preferably, the first base part is provided with a cavity internally. 
         [0037]    Preferably, the cross section of the cavity is preferably in a semicircular or hexagon shape. 
         [0038]    Preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction, and the second left hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction, whereby, after the assembling of the first body and the second body, the first left hook parts and the second left hook parts are in an interlacing arrangement along the vertical direction, while the first right hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction. 
         [0039]    More preferably, the first left hook parts and the first right hook parts are in an interlacing arrangement along the vertical direction one after the other, while the second left hook parts and the second right hook parts are in an interlacing arrangement along the vertical direction one after the other. 
         [0040]    Preferably, the fence body can be the wallboard, the metal mesh or the grating structures. 
         [0041]    Preferably, the first body and the second body are provided with the same structure and are integrated along the opposite direction into a whole. 
         [0042]    The present invention has the following advantages: 
         [0043]    1. as the first left hook parts and the first right hook parts of the first body are respectively positioned in front of the corresponding side wing, it is easy to install the fence body between two fence posts directly with great convenience; 
         [0044]    2. owning to the second body for concealing the openings of the first left hook parts and the first right hook parts in front of the first body, it is impossible to break the fence from the first left hook parts and the first right hook parts after the assembling of the first body and the second body, ensuring the safety and reliability of the fence post and the fence formed therefrom. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0045]    The present invention will become more fully understood from the following detailed description of the preferred, but non-limiting embodiments thereof, described in connection with the accompanying drawings in which: 
           [0046]      FIG. 1  shows a perspective view of the fence post in the prior art; 
           [0047]      FIG. 2  shows a perspective view of a first preferred embodiment of a fence post in accordance with the present invention; 
           [0048]      FIG. 3  shows an enlarged view illustrating the details of A in  FIG. 2 ; 
           [0049]      FIG. 4  shows a perspective view of a second preferred embodiment of a fence post in accordance with the present invention; 
           [0050]      FIG. 5  shows a perspective view of a third preferred embodiment of a fence post in accordance with the present invention; 
           [0051]      FIG. 6  shows an enlarged view illustrating the details of B in  FIG. 5 ; 
           [0052]      FIG. 7  shows a perspective view of a fourth preferred embodiment of a fence post in accordance with the present invention; 
           [0053]      FIG. 8  shows a perspective view of a fifth preferred embodiment of a fence post in accordance with the present invention; 
           [0054]      FIG. 9  shows a perspective view of a sixth preferred embodiment of a fence post in accordance with the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0055]    The detailed description of the preferred embodiment according to the invention is given as below with the accompanying drawings so that the benefits and features of the present invention are understood for those skilled in the art, making an definition of the protection scope of the present invention. Throughout the drawings, like numerals will be used to identify similar features except where expressly otherwise indicated. 
         [0056]    The orientations in the following embodiments, for example “upper”, “lower”, “left”, “right”, “front”, and “back”, are defined after the fence post embedded to the fixed objects, such as the ground, the toe wall or the like. 
       First Exemplary Embodiment 
       [0057]      FIGS. 2 and 3  show a first preferred embodiment of the fence post  100  in accordance with the present invention, comprising a first body  10  made of a metal panel through a constant bending treatment. The first body  10  is provided with a first base part  101  extending along the vertical direction for fixing to the fixed objects (such as the ground). The front end of the first base part  101  comprises a left front end  102  and a right front end  103 , and the back end of the first base part  101  comprises a bending part  104 , which connects the left front end  102  and the right front end  103  and bends backwards. Thus, the first base part  101  is provided with a hollow structure having a cavity inside, the cross section of which is preferably in a semicircular or hexagon shape, while the shape of the bending part  104  is shown in  FIG. 3 . The hollow structure of the first base part  101  is suitable for internally concealing electrical installations like electric wires, infrared detectors, or the motion detectors. A transition connection part is respectively arranged between the left front end  102  and the bending part  104 , and between the right front end  103  and the bending part  104  by the riveting machine, for reinforcing the strength of the first base part  101 . 
         [0058]    The left front end  102  extends leftwards forming a first left side wing  105 , and the right front end  103  extends rightwards forming a first right side wing  106 , wherein, certain parts of the first left side wing  105  bend to form a plurality of first left hook parts  107  distributed along one vertical line, each of which is provided with a rightward oriented opening positioned in front of the first left side wing  105 ; and certain parts of the first right side wing  106  bend to form a plurality of first right hook parts  108  distributed along another vertical line, each of which is provided with a leftward oriented opening positioned in front of the first right side wing  106 . As shown in  FIG. 2 , there exist five first left hook parts  107  and six first right hook parts  108  in an interlacing arrangement along the vertical direction, preferably, one after the other. 
         [0059]    In this embodiment, as the first left hook parts  107  and the first right hook parts  108  are respectively positioned in front of the corresponding side wing, it is easy for the installers to hook the two ends of the fence body up to the first left hook parts  107  or the first right hook parts  108  respectively when installing the fence body between two fence posts  100 . 
       Second Exemplary Embodiment 
       [0060]    As shown in  FIG. 4 , the fence post  200  of this embodiment comprises a first body  10  and a second body  20 , wherein, the first body  10  of this embodiment is provided with the same structure with that of the first embodiment which is not intended to describe herein-below, while the structure of the second body  20  is described as below. 
         [0061]    The second body  20  is provided with a capping-like structure that covers over the first left hook parts  107  and the first right hook parts  108  after the assembling of the first body  10  and the second body  20 , such that the openings of the first left hook parts  107  and the first right hook parts  108  are concealed under the second body  20 . 
         [0062]    The second body  20  of this embodiment is adapted to cover the openings of the first left hook parts  107  and the first right hook parts  108  effectively, thus preventing the fence post from being broken at the openings of the first left hook parts  107  and the first right hook parts  108 . 
       Third Exemplary Embodiment 
       [0063]    As shown in  FIGS. 5 and 6 , the fence post  300  of this embodiment comprises a first body  10  and a second body  30 , wherein, the first body  10  of this embodiment is provided with the same structure with that of the first and the second embodiment, while the structure of the second body  30  is described as below. 
         [0064]    The second body  30 , which is provided with a second base part  301  extending along the vertical direction for fixing to the fixed objects (such as the ground), is made of a metal panel through a constant bending treatment. The back end of the second base part  301  comprises a left back end  302  and a right back end  303 , and the front end of the second base part  301  comprises a bending part  304  which connects the left back end  302  and the right back end  303  and bends forwards. Thus, the second base part  301  is provided with a hollow structure having a cavity inside, the cross section of which is preferably in a semicircular or hexagon shape, while the shape of the bending part  304  is shown in  FIG. 6 . The hollow structure of the second base part  301  is suitable for internally concealing electrical installations like electric wires, infrared detectors, or the motion detectors. A transition connection part is respectively arranged between the left back end  302  and the bending part  304 , and between the right back end  303  and the bending part  304  also by the riveting machine, for reinforcing the strength of the second base part  301 . 
         [0065]    The left back end  302  extends leftwards forming a second left side wing  305 , and the right back end  303  extends rightwards forming a second right side wing  306 , wherein, certain parts of the second left side wing  305  bend to form a plurality of second left hook parts  307  distributed along one vertical line, each of which is provided with a rightward oriented opening positioned behind the second left side wing  305 ; and certain parts of the second right side wing  306  bend to form a plurality of second right hook parts (not depicted) distributed along another vertical line, each of which is provided with a leftward oriented opening positioned behind the second right side wing  306 . As shown in  FIG. 5 , the second left hook parts  307  and the second right hook parts are in an interlacing arrangement along the vertical direction, preferably, one after the other. 
         [0066]    It is understood from the above descriptions that, for the convenience of fabrication, the second body  30  can have the same structure with the first body  10 , which means that the first body  10  can also serve as the second body  30 . In this case, the first left hook part of the first base body  10  serves as the second right hook part. Similarly, the first right hook part serves as the second left hook part. 
         [0067]    The second body  30  of this embodiment is adapted to effectively cover the openings of the first left hook parts  107  and the first right hook parts  108  after the assembling of the first body  10  and the second body  30 , thus preventing the fence post from being broken at the openings of the first left hook parts  107  and the first right hook parts  108 . Further more, owning to the second left hook parts  307  and the second right hook parts of the second body  30 , after the assembling of the first body  10  and the second body  30 , the first left hook parts  107  and the second left hook parts  307  are in an interlacing arrangement along the vertical direction one after the other at the left side of the fence post  300 , while the first right hook parts  108  and the second right hook parts are in an interlacing arrangement along the vertical direction one after the other at the right side of the fence post  300 . Thus after the fence body arranged between a pair of fence posts, the fence body gets tighter once being pulled leftwards or rightwards, protecting the fence body from being broken. 
       Fourth Exemplary Embodiment 
       [0068]    As shown in  FIG. 7 , the fence of this embodiment comprises a plurality of fence units  1 , each of which comprises a pair of fence posts  100  and a fence body  400  arranged between the pair of fence posts  100 , wherein, the fence body  400  can be the wallboard, the metal mesh or the grating structures, and the fence posts  100  of this embodiment adopt the structure described in the first preferred embodiment. After the fence body  400  arranged to the pair of fence posts  100 , the left side of the fence body  400  hooks to the first right hook parts  108  of the fence post  100  on the left, and the right side of the fence body  400  hooks to the first left hook parts  107  of the fence post  100  on the right. 
       Fifth Exemplary Embodiment 
       [0069]    As shown in  FIG. 8 , the fence of this embodiment comprises a plurality of fence units  2 , each of which comprises a pair of fence posts  200  and a fence body  400  arranged between the pair of fence post  200 , wherein, the fence body  400  can be the wallboard, the metal mesh or the grating structures, and the fence posts  200  of this embodiment adopt the structure described in the second preferred embodiment. 
         [0070]    After the fence body  400  arranged to the pair of fence posts  200 , the left side of the fence body  400  hooks to the first right hook parts  108  of the fence post  200  on the left, and the right side of the fence body  400  hooks to the first left hook parts  107  of the fence post  200  on the right, while the second body  20  covers over the first left hook parts  107  and the first right hook parts  108  such that the openings of the first left hook parts  107  and the first right hook parts  108  are concealed under the second body  20 . 
       Sixth Exemplary Embodiment 
       [0071]    As shown in  FIG. 9 , the fence of this embodiment comprises a plurality of fence units  3 , each of which comprises a pair of fence posts  300  and a fence body  400  arranged between the pair of fence posts  300 , wherein, the fence body  400  can be the wallboard, the metal mesh or the grating structures, and the fence posts  300  of this embodiment adopt the structure described in the third preferred embodiment. 
         [0072]    After the fence body  400  arranged to the pair of fence posts  300 , the second body  30  covers over the first left hook parts  107  and the first right hook parts  108  such that the openings of the first left hook parts  107  are concealed under the second left side wing  305 , while the openings of the first right hook parts  108  are concealed under the second right side wing  306 , wherein, the first left hook parts  107  and the second left hook parts  307  are in an interlacing arrangement along the vertical direction one after the other at the left side of the fence post  300 , while the first right hook parts  108  and the second right hook parts are in an interlacing arrangement along the vertical direction one after the other at the right side of the fence post  300 . The left side of the fence body  400  hooks to both the first right hook parts  108  and the second right hook parts of the fence post  300  on the left, and the right side of the fence body  400  hooks to both the first left hook parts  107  and the second left hook parts  307  of the fence post  300  on the right. 
         [0073]    Throughout the embodiments, the first body and the second body are both made of steel for example steel strips by rolling or cutting, preferably of the galvanized steel. 
         [0074]    The above description is meant to be exemplary only and is not limited to the example shown in the drawings and described hereinbefore, and those skilled in the art will recognize that changes may be made to the embodiment described without department from the scope of the invention disclosed. Still other modifications varied in efferent manners which fall within the scope of the present invention and their technical equivalents will be apparent to those skilled in the art, in light of a review of this disclosure, and such modifications are intended to fall within the appended claims.

Summary:
The present invention disclosed a metal fence post, comprising a first body provided with first left hook parts and first right hook parts that respectively positioned in front of the corresponding side wing, which is easy for installing the fence body between two fence posts directly with great convenience. Further more, owning to the second body for concealing the openings of the first left hook parts and the first right hook parts disposed in front of the first body, it is impossible to break the fence from the first left hook parts and the first right hook parts after the assembling of the first body and the second body, ensuring the safety and reliability of the fence post and the fence formed therefrom.