Patent Publication Number: US-2022224133-A1

Title: Magnetic wireless charging holder

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a charging holder, and more particularly to a magnetic wireless charging holder. 
     2. Description of the Prior Art 
     A wireless charger is a device that uses the principle of electromagnetic induction for charging. Its principle is similar to that of a transformer. By providing a receiver coil and a transmitter coil, the transmitter coil transmits an electromagnetic signal to the outside under the action of electric power, and the receiver coil receives the electromagnetic signal and converts the electromagnetic signal into electric current, thereby achieving wireless charging. Wireless charging technology is a special way of power supply. It does not require a power cord, relies on electromagnetic wave transmission, and then converts electromagnetic wave energy into electrical energy for wireless charging. 
     A conventional wireless charger generally does not have a magnetic attraction function, and in particular, it cannot be quickly, accurately aligned with a mobile phone with a built-in magnet. This will affect the efficiency of wireless charging. Therefore, it is necessary to improve the conventional wireless charger. 
     SUMMARY OF THE INVENTION 
     In view of the defects of the prior art, the primary object of the present invention is to provide a magnetic wireless charging holder, which can effectively solve the problem that the existing wireless charger does not have the magnetic attraction function, especially the problem that the existing wireless charger cannot be quickly, accurately aligned with the built-in magnet of a mobile phone. 
     A magnetic wireless charging holder comprises a holder body and a main body. The main body is disposed on the holder body. The main body includes a housing, a wireless charging module, and a first magnet configured to attract a built-in magnet of a mobile phone. A front of the housing has a placement seat. A magnetic shield is fixed in the housing. The wireless charging module and the first magnet are disposed in the housing and located in front of the magnetic shield. The wireless charging module is close to the placement seat. The main body is detachably mounted on the holder body and positioned through magnetic attraction. A front end of the holder body has a spherical head. A back of the housing has a recess. The spherical head is rotatably embedded in the recess. A second magnet is provided in the recess for attracting and positioning the holder body. The second magnet is located in back of the magnetic shield. The second magnet and the magnetic shield are mutually attracted each other. The spherical head is attracted and positioned by the second magnet. 
     A magnetic wireless charging holder comprises a holder body and a main body. The main body is disposed on the holder body. The main body includes a housing, a wireless charging module, and a first magnet configured to attract a built-in magnet of a mobile phone. A front of the housing has a placement seat. The wireless charging module and the first magnet are disposed in the housing. The wireless charging module is close to the placement seat. The wireless charging module includes a substrate having a magnetic shield effect and a transmitter coil arranged on the substrate. The main body is detachably mounted on the holder body and positioned through magnetic attraction. A front end of the holder body has a spherical head. A back of the housing has a recess. The spherical head is rotatably embedded in the recess. A second magnet is provided in the recess for attracting and positioning the holder body. The second magnet is located in back of the substrate. The second magnet and the substrate are mutually attracted each other. The spherical head is attracted and positioned by the second magnet. 
     Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions: 
     With the first magnet, the product has a magnetic athaction function. The first magnet and the built-in magnet of the mobile phone are mutually attracted each other to achieve a rapid and accurate alignment, so that the wireless charging module and the receiver coil inside the mobile phone can be quickly, automatically aligned. Thereby, the efficiency of wireless charging can be effectively improved, without manual alignment. It brings convenience to use. Besides, a magnetic shield or a substrate having a magnetic shield effect is provided. On the one hand, the magnetic shield or substrate is used to attract and position the first magnet instead of glue or other means to facilitate the product assembly. On the other hand, the magnetic shield or substrate can shield the strong magnet on the back, so that the operation of the wireless charging module is more stable and reliable. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view according to a first embodiment of the present invention; 
         FIG. 2  is another perspective view according to the first embodiment of the present invention; 
         FIG. 3  is an exploded view according to the first embodiment of the present invention; 
         FIG. 4  is a cross-sectional view according to the first embodiment of the present invention; 
         FIG. 5  is a cross-sectional view of the main body according to the first embodiment of the present invention; 
         FIG. 6  is a perspective view of another example of the holder body according to the first embodiment of the present invention; 
         FIG. 7  is an exploded view according to a second embodiment of the present invention; and 
         FIG. 8  is a cross-sectional view according to the second embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIGS. 1 to 6  show the specific structure of a first embodiment of the present invention, comprising a holder body  10  and a main body  20 . 
     The front end of the holder body  10  has a spherical head  11 . In this embodiment, the holder body  10  includes a body portion  12 . The body portion  12  has a tapered shape or other shapes, but not limited thereto. The front end of the body portion  12  has a threaded post  101 . The spherical head  11  is formed with a threaded hole  102 . The threaded post  101  is threadedly connected to the threaded hole  102 . As shown in  FIG. 6 , the holder body  10  may be another configuration, which includes a clamping portion  13 . The clamping portion  13  is configured to clamp the air-conditioning vent of a car. The spherical head  11  is integrally extended from the front end of the champing portion  13 . The holder body  10  may be other configurations, but no limited thereto. 
     The main body  20  is disposed on the holder body  10 . The main body  20  includes a housing  21 , a wireless charging module  22 , and a first magnet  23  configured to attract a built-in magnet of a mobile phone. The front of the housing  21  has a placement seat  201 . A magnetic shield  24  for stabilizing the efficiency of wireless charging is fixed in the housing  21 . The magnetic shield  24  is configured to attract and position the first magnet  23 . The wireless charging module  22  and the first magnet  23  are disposed in the housing  21  and located in front of the magnetic shield  24 . The wireless charging module  22  is close to the placement seat  201 . The wireless charging module  22  is a wireless charging transmitter coil. In this embodiment, the main body  20  is detachably mounted on the holder body  10  and positioned through magnetic attraction, so that the main body  20  can be removed from the holder body  10  as needed. The housing  21  is disk-shaped. The back of the housing  21  has a recess  202 . The spherical head  11  is rotatably embedded in the recess  202 . A second magnet  25  is provided in the recess  202  for attracting and positioning the holder body  10 . The second magnet  25  is located in back of the magnetic shield  24 . The second magnet  25  and the magnetic shield  24  are mutually attracted each other. The spherical head  11  is attracted and positioned by the second magnet  25 . The second magnet  25  is formed with a hole  203 . The hole  203  is aligned with the recess  202 . The spherical head  11  is partially embedded in the hole  203 . The magnetic shield  24  is made of iron. It may be made of other metal materials that can be attracted by the magnet, but not limited thereto. 
     Specifically, the housing  21  includes a rear housing  211 , a front panel  212 , and an inner bracket  213 . The front panel  212  is disposed in front of the rear housing  211 . The inner bracket  213  is sandwiched between the rear housing  211  and the front panel  212 . The placement seat  201  is located on the front panel  212 . The wireless charging module  22  and the first magnet  23  are sandwiched between the inner bracket  213  and the front panel  212 . The first magnet  23  is located on the periphery of the wireless charging module  22 . The magnetic shield  24  is fixed on the front side of the inner bracket  213 . The second magnet  25  has a ring shape. The second magnet  25  is located in the center of the housing  21  and sandwiched between the inner bracket  213  and the rear housing  211 . A plurality of T-shaped engaging blocks  204  are provided on the periphery of the front side of the inner bracket  213 . A plurality of T-shaped engaging grooves  205  are formed on the periphery of the magnetic shield  24 . The plurality of T-shaped engaging blocks  204  are engaged in the corresponding T-shaped engaging grooves  205 , respectively. The magnetic shield  24  is fixed to the inner bracket  213  by locking screws or an insert molding process. A plurality of arc-shaped grooves  206  are formed on the periphery of the front side of the inner bracket  213 . The first magnet  23  is plural and arc-shaped to be engaged in the corresponding arc-shaped grooves  206 . The first magnet  23  and the magnetic shield  24  are mutually attracted each other. 
     In addition, a control board  26  is sandwiched between the inner bracket  213  and the rear housing  211 . The wireless charging module  22  is electrically connected to the control board  26 . A charging interface  27  is provided on the control board  26 . The charging interface  27  is exposed to the outer side of the rear housing  211 . In addition, a non-slip pad  28  is provided on the back of the housing  21 . 
     The use of this embodiment is described in detail as follows: When in use, a data cable is connected between the charging interface  27  and an external power source, so that the main body  20  is connected to the power source for performing wireless charging. When a mobile phone (such as Apple iPhone  12 , etc.) is attached to the placement seat  201 , the built-in magnet of the mobile phone can be attracted and positioned by the first magnet  23 . At this time, the wireless charging module  22  is accurately aligned with the receiver coil inside the mobile phone, and wireless charging can be performed after the pairing is successful. 
     The holder body  10  may be fixed to an external environment. When the main body  20  is pushed in different directions, the mobile phone placed on the main body  20  can be adjusted at different angles, so that the product has the functions of a charger and a holder. 
     The main body  20  can be separately removed from the holder body  10  and placed on a desktop as a common wireless charger for charging other types of mobile phones. In addition, the main body  20  may be directly sucked on the back of the mobile phone when playing games in Apple iPhone series, which is convenient to use. 
       FIG. 7  and  FIG. 8  show the specific structure of a second embodiment of the present invention. The second embodiment is substantially similar to the first embodiment with the exceptions described hereinafter. 
     In this embodiment, the wireless charging module  22  includes a substrate  221  having a magnetic shield effect and a transmitter coil  222  arranged on the substrate  221 . The second magnet  25  is located in back of the substrate  221 . The second magnet  25  and the substrate  221  are mutually attracted each other. The substrate  221  is configured to block the magnetic force of the second magnet  25  to prevent the magnetic force from affecting the transmitter coil  222 . This is beneficial to stabilize the wireless charging efficiency. There is no need to provide an additional magnetic shield, so as to simplify the internal structure of the product. 
     The use of the second embodiment is basically the same as the use of the first embodiment, so the use of the second embodiment will not be described in detail here.