Patent Publication Number: US-9419383-B1

Title: Side-open multimedia interface having a plurality components in a plastic shell surrounded by a metallic shell

Description:
TECHNICAL FIELD 
     The present application relates to the field of multimedia interface, particularly relates to a side-open vertical compound high-definition multimedia interface. 
     BACKGROUND OF THE INVENTION 
     High-Definition Multimedia Interface (HDMI) is the first type of digital interface that is capable of transmitting on a single cable the data of uncompressed full digital high-definition audio of multiple sound-channel as well as smart format data and control command data. 
     Currently, there are some deficiencies with those high-definition multimedia interfaces of A type (HDMI A TYPE) available in the market. Specifically, this kind of product is usually of single interface type or two-layer interface type. However, with increasing demands of the customers, the need for an interface which can provide a greater number of connectors is on the rise. 
     SUMMARY OF THE INVENTION 
     The present invention aims at providing a high-definition multimedia interface, which is able to effectively protect the transmission of such signals as videos and audios, and is also featured by compact structure, anti-vibration, impact-resistance and sound anti-EMI effects as well as easy installation and maintenance. 
     In order to solve the above mentioned problem, the present application provides the following solution. A side-open vertical compound high-definition multimedia interface includes more than one components and a shell assembly, each component includes a terminal part and a sub-shell part, the shell assembly includes an upper metal cap, a main plastic shell and a main metal shell. The component is formed by assembling the terminal part and the sub-shell part together. The sub-shell part is made of iron. The upper metal cap snaps firmly to the upper portion of the main plastic shell. The main plastic shell includes more than one cavities used for receiving the components. The number of the cavities is three or more, which are side-openly and vertically provided in the main plastic shell in a parallel manner. Each component can be inserted into one cavity. The main metal shell covers and snaps to the side and bottom portions of the main plastic shell. 
     In a preferred technical solution, the main metal shell includes more than one resilient guide tabs which could contact and guide the bottom portion of the sub-shell part. 
     In a preferred technical solution, the terminal part includes a terminal A and a terminal B, the terminal A and terminal B each includes more than one short terminals, more than one long terminals and more than one bridges, each short terminal includes a fish-eye portion, the sub-shell part includes an inner part, an outer shell and a back shell, the inner part includes an part A and a part B, the short terminals and the long terminals are respectively positioned at one end and the other of both the terminal A and the terminal B, and there are one more terminal in terminal A than in terminal B. The bridges are transversely provided between the terminals of the terminal part. The fish-eye portion is a hollow structure in the middle of the short terminal. The terminal A and the terminal B are respectively inserted into the part A and the part B, then the part A and the part B can snap to one another along their inner sides, forming an assembled inner part. Further, the assembled inner part is inserted into the outer shell. The back shell can be assembled to the back end of the outer shell, accommodating the assembled inner part between them. 
     In a preferred technical solution, the part A and the part B each includes more than one plastic ribs, when the terminal part is inserted into the inner part, the plastic ribs support the root portions of the short terminals respectively. 
     With the above mentioned technical solutions, the present invention could achieve the following advantageous effects. Firstly, the interface possesses the characteristics of compact structure and small size. Specifically, the interface is a compound one having three or more cavities for containing the components, each cavity can be inserted with a component (a one-piece connector), providing the customers with a plurality of connecting ports and thus more choices. Secondly, the interface possesses the features of anti-vibration and impact-resistance. Specifically, for one thing, the terminal part has bridges and fish-eye portions, wherein the bridges enhance the strength of the terminals and the fish-eye portions can improve the connecting pressure and the stability of the contact points; for the second, the inner part has plastic ribs which support the root portions of the short terminals respectively when the terminal part is inserted into the inner part, thereby enhancing the strength of the terminals. Thirdly, the interface possesses excellent anti-EMI effects. Specifically, the main metal shell includes resilient guide tabs which can contact and guide the bottom portion of the sub-shell part, thereby effectively resisting EMI. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a general assembly view of the interface; 
         FIG. 2  is a view showing the assembled interface; 
         FIG. 3  is an assembly view of a component; 
         FIG. 4  is an enlarged partial view of the component; 
         FIG. 5  is a view showing the inner part and the outer shell; and 
         FIG. 6  is an assembly view of the inner part. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The present invention will now be described in detail with reference to the specific embodiments, taken in conjunction with  FIG. 1  to  FIG. 6 . However, the description and the figures are not intended to limit the scope of the present application. 
     As shown in  FIG. 1  and  FIG. 3 , a side-open vertical compound high-definition multimedia interface comprises more than one components  1  and a shell assembly  4 , each component  1  includes a terminal part  2  and a sub-shell part  3 , the shell assembly  4  includes an upper metal cap  41 , a main plastic shell  42  and a main metal shell  43 , the main plastic shell  42  includes cavities  421  which are used for receiving the components  1 . 
     Each component  1  is formed by assembling the terminal part  2  and the sub-shell part  3  together. The sub-shell part  3  is made of iron. The upper metal cap  41  snaps firmly to the upper portion of the main plastic shell  42 . The main plastic shell  42  includes more than one cavities  421  which are used for receiving the components  1 . There are three cavities  421  which are side-openly and vertically provided in the main plastic shell  42 , parallel to each other. Each component  1  can be inserted into one cavity  421 . The main metal shell  43  covers and snaps to three side portions and the bottom portion of the main plastic shell  42 . 
     As shown in  FIG. 2 , on the basis of the above described embodiment, the main metal shell  43  includes more than one resilient guide tabs  431  which could contact and guide the bottom portion of the sub-shell part  3 . 
     As shown in  FIG. 2 , on the basis of the above described embodiments, the upper metal cap  41  includes more than one anti-cracking holes  411  which are evenly provided on the side faces of the upper metal cap  41 . 
     As shown in  FIG. 3  to  FIG. 6 , on the basis of the above described embodiments, the terminal part  2  includes a terminal A  21  and a terminal B  22 , the terminal A  21  and terminal B  22  each includes more than one short terminals  23 , more than one long terminals  24  and more than one bridges  25 , each short terminal  23  includes a fish-eye portion  231 . The sub-shell part  3  includes an inner part  31 , an outer shell  32  and a back shell  33 , the inner part  31  further includes a part A  311  and a part B  312 . The short terminals  23  and the long terminals  24  are respectively positioned at one end and the other of the terminal A  21  and the terminal B  22 , and there are one more terminal in terminal A  21  than in terminal B  22 . The bridges  25  are transversely provided between the short terminals  23  of the terminal part  2 . The fish-eye portion  231  is a hollow structure in the middle of the short terminal  23 . The terminal A  21  and the terminal B  22  are respectively inserted into the part A  311  and the part B  312 , then the part A  311  and the part B  312  can snap to one another along their inner sides, forming an assembled inner part  31 . Further, the assembled inner part  31  is inserted into the outer shell  32 . The back shell  33  can be assembled to the back end of the outer shell  32 , accommodating the assembled inner part  31  between them. 
     As shown in  FIG. 5 , on the basis of the above described embodiments, the part A  311  and the part B  312  each includes more than one plastic ribs  313 . When the terminal part  2  is inserted into the inner part  31 , the plastic ribs  313  support the root portions of the short terminals  23  respectively. 
     As shown in  FIG. 5  and  FIG. 6 , on the basis of the above described embodiments, the part A  311  and the part B  312  each includes more than one outer protrusions  314 , the number of which is four or more. When the assembled inner part  31  is inserted into the outer shell  32 , the outer protrusions  314  can bear against the inner portion of the outer shell  32 . 
     As shown in  FIG. 5 , on the basis of the above described embodiments, the part A  311  and the part B  312  each includes outer snap grooves  315 , the outer shell  32  includes snap elements  321  which are provided on the inner side of the outer shell  32 . When the assembled inner part  31  is inserted into the outer shell  32 , each outer snap groove  315  positionally corresponds to and thus snaps to one snap element  321 . 
     As shown in  FIG. 6 , on the basis of the above described embodiments, the part A  311  and the part B  312  each includes at least one inner snap-in male connector  316  and at least one inner snap-in female connector  317 , which are respectively provided on the sides of the part A  311  and part B  312 . When the part A  311  is assembled to the part B  312 , each inner snap-in male connector  316  positionally corresponds to and thus snaps fit to one inner snap-in female connector  317 . 
     As shown in  FIG. 6 , the terminal A  21  and the terminal B  22  could be made at the same time with the same set of mold to save cost. The four bridges  25  can enhance the strength of the terminal part  2 .