Patent Publication Number: US-7714799-B2

Title: Antenna device and wireless signal transmission device with the same

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
   This application claims the priority benefit of Taiwan application serial no. 96122767, filed on Jun. 23, 2007. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to an antenna device, and more particularly, to a combination structure of antenna device with an embedding surface of a fixing element, which is an expansive and hollow cylinder. 
   2. Description of Related Art 
   As the global communication business develops rapidly, the wireless mobile communication technique as a principle mean of personal communication in the future causes great concern. Because of the complexity of the wireless communication technique, the industries must provide best combination products. No matter the appearance of appreciation of the beauty or the effects of transmitting and receiving signals will decide the key factor of products on sale. Especially, the improvement on the external structure of the external components of the hardware for the antenna is an important mission for the designers of the corresponding organizations to make a breakthrough. 
   For increasing the strength of the combination structure for the antenna module, the American patent NO. U.S. Pat. No. 7,195,520 ‘Connector for antenna’, as an example, uses a C-shaped mounted between a hollow casing and a terminal. Although the structure of the antenna is simple, the components can not be shifted to the front and rear, and the antenna can not be retrieved either. So the precision for fabricating is not easy to control. One of the other references uses the improvement of an adapter to lower the risk of the damage to the antenna during taking the antenna apart. But the antenna can not be retrieved in the inner of the transceiver causing inconvenience on carrying. It is very inconvenient to re-fabricate the antenna at the usage state. 
   So it is desired to develop an antenna device with convenient carrying, easy retrieving, simple structure, and low cost. 
   SUMMARY OF THE INVENTION 
   The present invention provides an antenna device and a wireless signal transmission device with the same. The antenna device has more stability and can be retrieved easily. 
   The antenna device comprises a base, a combination element, a fixing element, a rotation unit, and a radiation conductor. The base has a through hole and a bottom surface, wherein the bottom surface has a plurality of pins. The combination element is approximated to a cylinder and has a first blocking portion. The fixing element is a hollow cylinder and includes an embedding surface, wherein the embedding surface contains a plurality of bar troughs paralleling to each other, and one terminal of the fixing element touches the first blocking portion. The rotation unit is approximated to a cylinder and includes a second blocking portion, wherein the second blocking portion touches the other terminal of the fixing element, and one terminal of the rotation unit and the combination element wedge to each other via the fixing element. One terminal of the radiation conductor and the other terminal of the rotation unit are pivoted together. 
   According to an embodiment of the invention, a metal plate is formed between every two bar troughs. The first blocking portion and the second blocking portion hold and press both side of the fixing element to form an expanding type of embedding surface. Thus, the plurality of metal plates forms an arched structure and maintains a constant elasticity to wedge with close in the inner of the through hole of the base. Therefore, the antenna device is formed a firm structure. 
   According to another embodiment of the invention, a wireless signal transmission device with the antenna device further includes a wireless signal transmission apparatus, a substrate, a feeding cable, and a ground surface. The radiation conductor of the antenna device is easy to pull out and retrieve in the through hole of the base. So the convenience of the wireless signal transmission device is increased. 
   In order to make the features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below. 
   It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. 
       FIG. 1  is a solid decomposition diagram of an antenna device according to an embodiment of the invention. 
       FIG. 2  is a solid composition diagram of an antenna device according to an embodiment of the invention. 
       FIG. 3  is a solid diagram of a fixing element. 
       FIG. 4  is a lateral diagram of a fixing element. 
       FIG. 5  is a solid diagram at usage state implementing to a wireless signal transmission device according to an embodiment of the invention. 
       FIG. 6  is a solid diagram at retrieving state implementing to a wireless signal transmission device according to an embodiment of the invention. 
   

   DESCRIPTION OF EMBODIMENTS 
   Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. 
     FIG. 1  and  FIG. 2  are respectively a solid decomposition and composition diagram of an antenna device according to an embodiment of the invention. Referring to  FIG. 1  and  FIG. 2  together, the antenna device  1  comprises: a base  15 , a combination element  11 , a fixing element  12 , a rotation unit  13 , and a radiation conductor  14 . The base  15  has a through hole  151  and a bottom surface (not shown in  FIG. 1  and  FIG. 2 ), and a plurality of pins  152  is disposed on the bottom surface. The through hole  151  is approximately parallel to the bottom surface. The length of the base  15  is about 8.5 mm, the width of the base  15  is about 7 mm, and the height of the base  15  is about 7 mm. The diameter of the through hole  151  is about 4 mm. The length of the pins  152  is about 1 mm, the width of the pins  152  is about 1 mm, and the height of the pins  152  is about 1.5 mm. 
   The combination element  11  is approximated to a cylinder and includes a first blocking portion  111 . The length of the combination element  11  is about 7 mm, the diameter of the combination element  11  is about 2 mm. The depth of the first blocking portion  111  is about 0.5 mm, the diameter of the first blocking portion  111  is about 3.5 mm. The fixing element  12  is a hollow cylinder and includes an embedding surface  121 , wherein the embedding surface  121  contains a plurality of bar troughs  122  paralleling to each other. A metal plate  123  is formed between every two bar troughs  122 . One terminal of the fixing element  12  touches the first blocking portion  111 . The length of the fixing element  12  is about 6 mm, and the diameter of the fixing element  12  is about 3.5 mm. 
   The length of the embedding surface  121  is about 6 mm and is surrounded by the plurality of metal plates  123 . The diameter of the two terminals forming a circle of the embedding surface  121  is about 3 mm, the biggest diameter of the middle of the embedding surface  121  is about 4.5 mm. The rotation unit  13  is approximated to a cylinder and includes a second blocking portion  131 , wherein the second blocking portion  131  touches the other terminal of the fixing element  12 . One terminal of the rotation unit  13  and the combination element  11  wedge to each other via the fixing element  12 . The other terminal of the rotation unit  13  is pivoted at one terminal of the radiation conductor  14 . The length of the rotation unit  13  is about 7 mm, the diameter of the rotation unit  13  is about 3.5 mm, and the diameter of the second blocking portion is about 3.5 mm. 
   A blocking portion  141  is disposed at the end of the other terminal of the radiation conductor  14 . The length of the radiation conductor  14  is about 68 mm, and the diameter of the radiation conductor  14  is about 3.5 mm. The diameter of the blocking portion  141  is about 5 mm, and the depth of the blocking portion  141  is about 1 mm. 
   In the embodiment, the first blocking portion  111  and the second blocking portion  131  hold and press both side of the fixing element  12  to form an expanding type of embedding surface  121 . Thus, the plurality of metal plates  123  forms a arched structure and maintains a constant elasticity to wedge with close in the inner of the through hole  151  of the base  15 . Therefore, the antenna device  1  is formed a firm structure. 
   By the above mentioned note of antenna device  1 , the embedding surface  121  is surrounded by the plurality of metal plates  123  disposed on the surface of the fixing element  12 , and the external perimeter of the embedding surface  121  is formed expansive cylinder by the holding and pressing effect of the first blocking portion  111  and the second blocking portion  131 . When the fixing element  12  is put in the through hole  151  of the base  15 , the embedding surface  121  is wedged with close in the inner of the through hole  151  of the base  15  by the expansive effect to increase the stability of the structure of the antenna device  1 . So the components of the antenna device  1  are not easy to drop for the external force. Besides, a blocking portion  141  is disposed at the end of the other terminal of the radiation conductor  14 , and the surface of the blocking portion  141  is a conical convexity for easing to draw out and push in the fixing element  12 , the rotation unit  13 , and the radiation conductor  14  from the base  15 . Thus, the convenience of using and retrieving the antenna device  1  is increased. 
     FIG. 3  and  FIG. 4  are respectively a solid and lateral diagram of the fixing element  12 . Referring to  FIG. 3  and  FIG. 4  together, the embedding surface  121  disposed on the surface of the fixing element  12  includes the plurality of bar troughs  122  paralleling to each other, and the metal plate  123  is formed between every two bar troughs  122 . Because of the expansive property of the metal plate  123 , the fixing element  12  is suitable to get in and out of the inner of the through hole  151  of the base  15  repeatedly. The diameter of the end of the two terminals of the fixing element is smallest, and the diameter of the middle of the fixing element is biggest. 
   When the antenna device  1  is at usage state, the fixing element  12  is put in the through hole  151  of the base  15 , the embedding surface  121  and the inner surface of the through hole  151  touch with close to increase the binding stability of radiation conductor  14  and the base  15 . When the antenna device  1  is at retrieving stage, the radiation conductor  14  is pushed and pressed via the base  15  by shrinking the expansive property of the metal plates  123  of the embedding surface  121 . The retrieving action of the antenna device  1  is achieved easily and quickly to increase the convenience of usage and retrieving. So, the antenna device  1  is a simple structure, easy to produce with low cost. 
     FIG. 5  and  FIG. 6  are respectively a solid diagram at usage state and a solid diagram at retrieving stage implementing to a wireless signal transmission device according to an embodiment of the invention. Referring to  FIG. 5  and  FIG. 6  together, the wireless signal transmission device  100  includes a wireless signal transmission apparatus  3 , an antenna device  2 , a substrate  16 , a feeding cable  17 , and a ground surface  31 . The antenna device  2  is the same as the antenna device  1  and works as the antenna device  1 . The wireless signal transmission apparatus  3  is a notebook computer as an example here. The antenna device  2  is integrated into the wireless signal transmission apparatus  3 . The plurality of pins  252  disposed on the bottom surface of the base  25  is welded at the surface of the substrate  16 , and the substrate  16  is welded at the ground surface  31  in the wireless signal transmission apparatus  3 . The feeding cable  17  includes a positive conducting cable  171  and a negative conducting cable  172 . The positive conducting cable  171  is connected to the pins  152 , and the negative conducting cable  172  is connected to the substrate  16 . When the antenna device  2  is at the usage state, the radiation conductor  24  is pull out by the conical convexity of the blocking portion  241 , and rotation unit  23  is used to rotate the radiation conductor  24  to a suitable position for transmitting and receiving wireless signals. At present, the structure of the antenna device  2  is firm enough by the embedding surface  221  of the fixing element  22  wedged in the inner surface of the through hole  251  of the base  25 . When the antenna device  2  is at the retrieving state, the radiation conductor  24  is put into the wireless signal transmission apparatus  3  by pushing and pressing the blocking portion  241 . No matter the antenna device  2  is at the usage or the retrieving stage, the antenna device  2  is convenient to pull out and push in. And the antenna device  2  does not occupy space when the antenna device  2  is at the retrieving state. 
   Though the present invention has been disclosed above by the preferred embodiments, they are not intended to limit the present invention. Anybody skilled in the art can make some modifications and variations without departing from the spirit and scope of the present invention. Therefore, the protecting range of the present invention falls in the appended claims.