Patent Publication Number: US-11398690-B2

Title: Wireless transmission device

Description:
This application claims the benefit of People&#39;s Republic of China application Serial No. 201911321436.X, filed Dec. 20, 2019, the subject matter of which is incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The invention relates in general to a transmission device, and more particularly to a wireless transmission device. 
     Description of the Related Art 
     Generally speaking, a connector is used by way of plugging and unplugging. However, when the connector is repeatedly plugged and unplugged over a long period of time, the connection cable may be bent or deflected, the connection point may become loose, and the quality of signal transmission may deteriorate. 
     SUMMARY OF THE INVENTION 
     The invention is directed to a wireless transmission device capable of securely fixing the connection cable on the body, not only complying with the integrated design and fixing an additional connection cable but further advantageously providing an integrated appearance, stabilizing signal transmission and reducing maintenance cost. 
     According to a first aspect of the present invention, a wireless transmission device is provided. The wireless transmission device includes a body, a connection cable electrically connected to the body, and at least one fixing member. The body includes a slot and a first fixing base. The connection cable includes a plug and a second fixing base. The plug matches the slot, and the second fixing base and the first fixing base are opposite to each other in a vertical manner. The at least one fixing member is inserted into the first fixing base and the second fixing base to fix the plug in the slot. 
     Through the design that the shape of the plug matches that of the slot of the body, the second fixing base of the plug is fixed by the fixing member, such that the coupling stability between the body and the connection cable is increased, the signal transmission is stabilized, the maintenance cost is reduced, and an integrated appearance is provided. 
     The above and other aspects of the invention will become better understood with regard to the following detailed description of the preferred but non-limiting embodiment(s). The following description is made with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic 3D diagram of a wireless transmission device according to an embodiment of the present invention. 
         FIG. 2  is an explosion diagram of a wireless transmission device according to an embodiment of the present invention. 
         FIG. 3  is an explosion diagram of the wireless transmission device of  FIG. 2  viewed from another view angle. 
         FIG. 4  is an explosion diagram of wireless transmission device according to an embodiment of the present invention. 
         FIG. 5  is an explosion diagram of the wireless transmission device of  FIG. 4  viewed from another view angle. 
         FIG. 6  is an interior perspective diagram of a wireless transmission device according to an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Detailed descriptions of the invention are disclosed below with a number of embodiments. However, the disclosed embodiments are for explanatory and exemplary purposes only, not for limiting the scope of protection of the invention. Similar/identical designations are used to indicate similar/identical elements. 
       FIG. 1  is a schematic 3D diagram of a wireless transmission device  100  according to an embodiment of the present invention.  FIG. 2 ,  FIG. 3 ,  FIG. 4  and  FIG. 5  are respectively explosion diagrams of the wireless transmission device  100  viewed from different view angles.  FIG. 6  is an interior perspective diagram of a wireless transmission device  100  according to an embodiment of the present invention. 
     Refer to  FIG. 1  to  FIG. 6 . The wireless transmission device  100  includes a body  110 , a connection cable  120  and at least one fixing member  130  (such as two). The body  110  includes a slot  111  (that is, female connector) and a set of first fixing bases  115  and  116 . The connection cable  120 , electrically connected to the body  110 , includes a plug  122  (that is, male connector) and a set of second fixing bases  124 , wherein the shape of the plug  122  matches the shape of the slot  111 , and the set of second fixing bases  124  and the set of first fixing bases  115  and  116  are opposite to each other in a vertical manner. At least one fixing member  130  (for example two), is inserted into the set of first fixing bases  115  and  116  and the set of second fixing bases  124  to fix the plug  122  in the slot  111 . 
     In an embodiment, the body  110  can be a transmitter module configured to transmit a video signal to a wireless projection device. That is, the transmitter module is configured to emit the video signal to the reception end of a wireless projection device or other wireless electronic device, and then the video signal is played by a projector or a screen. Or, the body  110  can be a receiver module configured to receive a video signal and then transmit the video signal to a wireless projection device or other wireless electronic device. The said arrangement is not subjected to specific restrictions in the present invention. 
     In an embodiment, the wireless transmission device  100  is electrically connected to a desktop electronic device (such as computer) or a portable electronic device (such as mobile phone) through the connection cable  120 . The desktop electronic device and the portable electronic device can be provided with a video output terminal and a power output terminal. The connection cable  120  can be realized by an HDMI (High Definition Multimedia Interface) connection cable  120   a  or a USB connection cable  120   b . The HDMI connection cable  120   a  is configured to connect the video output terminal, and the USB connection cable  120   b  is configured to connect the power output terminal or an external power source (such as the mains). Exemplarily but not restrictively, the connection cable  120  can also be realized by a USB type C connection cable configured to connect the video output terminal and the power output terminal. 
     That is, the connection cable  120  has a quantity of two, and the two connection cables respectively are connected to the plug  122 , which includes a power connection terminal  121   b  (male connector) and a video transmission terminal  121   a  (male connector). The power connection terminal  121   b  (male connector) and the video transmission terminal  121   a  correspondingly connect a power connection terminal  111   b  (female connector) and a video transmission terminal  111   a  (female connector) of the body  110 . Refer to  FIG. 4 . The power connection terminal  111   b  (female connector) and the video transmission terminal  111   a  (female connector) are disposed on the circuit board  118 . Or, the connection cable  120  has a quantity of one, and the plug  122  includes a USB type C transmission terminal (male connector) correspondingly connecting the USB type C transmission terminal (female connector) of the body  110  and is disposed on the circuit board  118 . When the male/female connector between the connection cable  120  and the body  110  becomes loose or has poor contact, the transmission stability of video signal will be affected. Therefore, in the present invention, the plug  122  is firmly fixed in the slot  111  through a more stable structure. 
     In an embodiment, the shape of the plug  122  is a triangle, a quadrilateral, a trapezoid or an arc, and the shape of the slot  111  matches any of the above shapes, such that when the plug  122  is inserted into the slot  111 , the plug  122  and the slot  111  are tightly engaged (that is, the male connector and the female connector are tightly engaged). The shape of the body  110  is such as a quadrilateral or an arc, and the lateral side  113  of the body  110  and the lateral side  123  of the plug  122  are immediately connected to comply with the integrated design. 
     In an embodiment, the fixing member  130  has a quantity of two, and the two fixing members respectively are inserted into the body  110  via its bottom. The fixing member  130  may be, for example, a screw or other locking member. The bottom of the body  110  is correspondingly provided with two openings (referring to  FIG. 5 ). The fixing member  130 , once installed, is hidden at the bottom of the body  110  and will not be exposed on the outer surface of the plug  122 . Therefore, when the wireless transmission device  100  needs to be repaired or the connection cable  120  needs to be replaced, the user only needs to open the fixing member  130  and unplug the connection cable  120  without having to detach the upper cover  112  of the body  110 , hence making the following maintenance more convenient and the maintenance cost lowered. 
     Moreover, the set of first fixing bases  115  and  116  and the set of second fixing bases  124  respectively have a quantity of two, and the two first fixing bases  115  and  116  and the two second fixing bases  124  respectively are disposed on two opposite sides of the slot  111  and the plug  122  (in a vertical direction). When the fixing members  130  are inserted into the body  110  via its bottom, the fixing members  130  are inserted into the two first fixing bases  115  and  116  and the two second fixing bases  124  respectively to fix the plug  122  in the slot  111  as indicated in  FIG. 6 . 
     Additionally, to firmly fix the plug  122  in the slot  111 , the set of first fixing bases  115  and  116  disposed in the slot  111  of the body  110  and the set of second fixing bases  124  disposed in the plug  122  are opposite to each other in a vertical manner, and the set of second fixing bases  124  is clamped and positioned in a vertical direction, such that after the body  110  and the connection cable  120  are coupled together, the coupling stability can be increased and signal transmission can be stabilized. Or, the upper cover  112  and the lower cover  114  of the body  110  are protruded outwards to define a limiting space, wherein the upper surface and the lower surface of the plug  122  correspondingly contact the upper cover  112  and the lower cover  114  of the body  110 , such that after the body  110  and the connection cable  120  are coupled together, the coupling stability can be increased and signal transmission can be stabilized. 
     Refer to  FIG. 4  and  FIG. 5 . The body  110  includes an upper cover  112 , a lower cover  114  and two opposite sidewalls  113   a , and the opening of the slot  111  is defined by the upper cover  112 , the lower cover  114  and two opposite sidewalls  113   a  indented between the upper cover  112  and the lower cover  114 . That is, the upper cover  112  and the lower cover  114  of the body  110  are protruded outwards to form a limiting space (that is, the slot  111 ). Therefore, when the plug  122  is inserted into the slot  111  between the upper cover  112  and the lower cover  114 , the plug  122  is limited and positioned by two opposite inner lateral sides  112   a  and  114   a  of the upper cover  112  and the lower cover  114  to increase the coupling stability as indicated in  FIG. 6 . 
     In an embodiment, at least one of the inner lateral sides  112   a  and  114   a  of the upper cover  112  and the lower cover  114  is provided with a positioning slot  117   b  (referring to  FIG. 5 ), and the upper surface or the lower surface of the plug  122  is correspondingly provided with a positioning block  122   b  (referring to  FIG. 2 ) engaged with the positioning slot  117   b . In another embodiment, at least one of the inner lateral sides  112   a  and  114   a  of the upper cover  112  and the lower cover  114  is provided with the positioning block  117   a  (referring to  FIG. 5 ), and the upper surface or the lower surface of the plug  122  is correspondingly provided with the positioning slot  122   a  (referring to  FIG. 2 ) engaged with the positioning block  117   a . Thus, through the engagement between the positioning slot  122   a  ( 117   b ) and the positioning block  117   a  ( 122   b ), the plug  122  is firmly fixed in the slot  111  to increase the coupling stability. 
     Moreover, the upper cover  112  has a set of first slots  115   a  and  115   b , the lower cover  114  has a set of second slots  116   a  and  116   b , the first slots  115   a  and  115   b  and the corresponding second slots  116   a  and  116   b  are vertically aligned in a vertical direction, and a set of second fixing bases  124  is inserted into the space between the set of first slots  115   a  and  115   b  and the set of second slots  116   a  and  116   b . The first slots  115   a  and  115   b  together with the second slots  116   a  and  116   b  form the set of first fixing bases  115  and  116  (referring to  FIG. 2 ) opposite to the set of second fixing bases  124  in a vertical manner. That is, through the design that the second fixing base  124  is seamlessly inserted into the space between the set of first slots  115   a  and  115   b  and the set of second slots  116   a  and  116   b , the set of second fixing bases  124  is positioned between the set of first slots  115   a  and  115   b  and the set of second slots  116   a  and  116   b  to increase the coupling stability. 
     The wireless transmission device disclosed in above embodiments of the present invention is capable of firmly fixing the connection cable on the body, not only complying with the integrated design and fixing an additional connection cable but further advantageously providing an integrated appearance, stabilizing signal transmission and reducing maintenance cost. 
     While the invention has been described by way of example and in terms of the preferred embodiment(s), it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.