Patent Publication Number: US-2023135878-A1

Title: Wireless apparatus of electric motorcycle

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a wireless apparatus, especially to a wireless apparatus mounted on an electric motorcycle. 
     2. Description of Related Art 
     To enhance functions of an electric vehicle, a smart instrument, a wireless communication module, and a wireless tire pressure module may be selected to be mounted on the electric vehicle. The smart instrument may connect to a mobile phone via wireless connection in 2.4 GHz frequency band for data exchange. The wireless communication module may connect to telecommunication base station via mobile communication network for recording real time data and monitoring vehicle conditions. The wireless tire pressure module may connect to tire pressure detectors mounted to a front wheel and a rear wheel in 2.4 GHz frequency band for monitoring tire pressures of the front wheel and the rear wheel, and transmitting the tire pressures to the instrument to display. Usage safety is enhanced. 
     However, a conventional electric motorcycle has a battery disposed inside the frame and located between the front wheel and the rear wheel of the conventional electric motorcycle. Wireless signals traveling in a longitudinal direction is easily shielded by a structure of the battery, thereby causing poor signal connection and hindering the wireless signals from normal function. 
     SUMMARY OF THE INVENTION 
     Problem to Be Solved 
     The main objective of the present invention is to provide a wireless apparatus of an electric motorcycle to improve on the shortcomings that the wireless signals traveling in a longitudinal direction are easily shielded by the battery of the conventional electric motorcycle and the function of the wireless signals is affected adversely. 
     Technical Solution Solving the Problem 
     In order to achieve the above objective, the wireless apparatus of the electric motorcycle in accordance with the present invention is assembled to a body of the electric motorcycle. The body comprises a frame, a battery, a motor, a motor controller, a front wheel, and a rear wheel. The battery is connected with the frame. The motor and the motor controller are disposed at a bottom of the frame. The front wheel is disposed below a front side of the frame. The rear wheel is disposed below a rear side of the frame. The wireless apparatus comprises: 
     a receiver disposed at and extending out from one of a left side and a right side of the frame; 
     a front wheel tire pressure sensor disposed at the front wheel and communicating with the receiver via a wireless communication; and 
     a rear wheel tire pressure sensor disposed at the rear wheel and communicating with the receiver via a wireless communication. 
     Furthermore, the motor and the motor controller are located below or behind the battery; and the receiver is located behind the motor. 
     Further, the wireless apparatus comprises an instrument. The instrument is disposed above the front side of the frame and is located in front of the battery. A vertical datum plane and a horizontal datum plane being perpendicular to each other are defined to pass through a center of mass of the battery. The instrument is located above the horizontal datum plane and in front of the vertical datum plane. The front wheel is located below the horizontal datum plane and in front of the vertical datum plane. The receiver is located below the horizontal datum plane and behind the vertical datum plane. 
     Further, signals in a same frequency band are used by the instrument and the receiver. 
     Further, the signals used by the instrument and the receiver are in 2.4 GHz frequency band. 
     Further, the frame includes a main-frame and a sub-frame located behind the main-frame. The battery is mounted in the main-frame. The receiver is disposed at one of a left side and a right side of the sub-frame. 
     Further, the sub-frame includes a left pipe and a right pipe. When viewed from a top of the electric motorcycle, the receiver partially overlaps one of the left pipe and the right pipe. 
     Further, the wireless apparatus comprises a wireless communication module. The wireless communication module is disposed in the sub-frame and operates in accordance with a long term evolution communication protocol. 
     Efficacy of the Invention 
     1. The receiver is disposed at and extends out from the left side or the right side of the frame, and the receiver is placed aside to avoid shielding effect caused by the battery. Therefore, signal quality is improved, and the receiver can stably receive signals from the front wheel tire pressure sensor and the rear wheel tire pressure sensor. 
     2. The instrument and the receiver are located at a front side and a rear side with respect to the battery, respectively. So communications between the receiver and the front wheel tire pressure sensor and the rear wheel tire pressure sensor are free from being interfered by signals from the instrument. 
     3. Functions and applications of Internet of things can be added because of the wireless communication module. The wireless communication module uses signals in accordance with long term evolution (LTE) communication protocol, which do not interfere with the signals in 2.4 GHz used by the instrument and the receiver. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a side schematic view of a preferred embodiment of a wireless apparatus of an electric motorcycle in accordance with the present invention disposed on a frame; 
         FIG.  2    is another side schematic view of the preferred embodiment of the wireless apparatus of the electric motorcycle disposed on the frame; 
         FIG.  3    is a top schematic view of the preferred embodiment of the wireless apparatus of the electric motorcycle disposed on the frame in  FIG.  1   ; 
         FIG.  4    is an enlarged top schematic view of  FIGS.  3   ; and 
         FIG.  5    is an enlarged top schematic view of another preferred embodiment of a wireless apparatus of an electric motorcycle in accordance with the present invention disposed on a frame. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to  FIGS.  1  to  4   , a wireless apparatus of an electric motorcycle in accordance with the present invention is assembled to a body  10  of the electric motorcycle. The body  10  comprises a frame  11 , a battery  12 , a motor  13 , a motor controller  14 , a front wheel  15 , and a rear wheel  16 . The battery  12  is connected with the frame  11 . The motor  13  and the motor controller  14  are disposed at a bottom of the frame  11 . The front wheel  15  is disposed below a front side of the frame  11 . The rear wheel  16  is disposed below a rear side of the frame  11 . The battery  12  may be mounted inside the frame  11  or a housing of the battery  12  may be integrally formed with the frame  11  as a whole piece. 
     The wireless apparatus comprises a receiver  20 , a front wheel tire pressure sensor  30 , and a rear wheel tire pressure sensor  40 . The receiver  20  is disposed at and extends out from one of a left side and a right side of the frame  11 . The front wheel tire pressure sensor  30  is disposed at the front wheel  15  and communicates with the receiver  20  via a wireless communication. The rear wheel tire pressure sensor  40  is disposed at the rear wheel  16  and communicates with the receiver  20  via a wireless communication. 
     The motor  13  and the motor controller  14  are located below or behind the battery  12 . The receiver  20  is located behind the motor  13 . 
     In addition, the wireless apparatus comprises an instrument  50 . The instrument  50  is disposed above the front side of the frame  11  and in front of the battery  12 . As shown in  FIG.  2   , a horizontal datum plane  70  and a vertical datum plane  80  being perpendicular to each other are defined to pass through a center of mass of the battery  12 . The instrument  50  is located above the horizontal datum plane  70  and in front of the vertical datum plane  80 . The front wheel  15  is located below the horizontal datum plane  70  and in front of the vertical datum plane  80 . The receiver  20  is located below the horizontal datum plane  70  and behind the vertical datum plane  80 . Wherein, the instrument  50  and the receiver  20  both use signals in  2 . 4  GHz frequency band. A user can use a mobile phone to connect with the instrument  50  for functions of navigation information transmission, music control, and notification display. 
     As shown in  FIGS.  3  and  4   , the frame  11  includes a main-frame  111  and a sub-frame  112  located behind the main-frame  111 . The battery  12  is mounted in the main-frame  111 . The receiver  20  is disposed at one of a left side and a right side of the sub-frame  112 . As shown in  FIG.  5   , the sub-frame  112  includes a left pipe  113  and a right pipe  114 . The left pipe  113  and the right pipe  114  each have respective bracing segments. The receiver  20  may be disposed on an external surface of the bracing segment of the left pipe  113  or the right pipe  114 . When viewed from the top, the receiver  20  partially overlaps the left pipe  113  or the right pipe  114 . As shown in  FIG.  4   , the receiver  20  does not overlap the left pipe  113  or the right pipe  114  alternatively. 
     The wireless apparatus comprises a wireless communication module  60 . The wireless communication module  60  is disposed in the sub-frame  112  and operates in accordance with a long term evolution communication protocol (LTE communication protocol) to communicate with an external device with respect to the body  10 . Information of vehicle condition, vehicle position, etc., can be uploaded to a cloud system, so the user can remotely confirm said vehicle information. Functions and applications of Internet of things can be added to the electric motorcycle via the wireless communication module  60 . 
     The receiver  20  deviated from the frame  11  and extends out from the left side or the right side of the frame  11  to prevent shielding effect caused by the battery  12 . The receiver  20  can stably receive signals from the front wheel tire pressure sensor  30  and the rear wheel tire pressure sensor  40 . So the user can confirm conditions of the wheels of the electric motorcycle to avoid accidents caused by insufficient tire inflation pressure or flat tire. The wireless signals from the receiver  20 , the front wheel tire pressure sensor  30 , and the rear wheel tire pressure sensor  40  traveling in a longitudinal direction pass the receiver  20  placed aside, thereby effectively improving the shielding caused by the battery  12  and enhancing signal quality. 
     In addition, the instrument  50  is located in front of the battery  12 . The receiver  20  is located aside and behind the battery  12 . Communications between the receiver  20 , the front wheel tire pressure sensor  30  and the rear wheel tire pressure sensor  40  are prevented from being interfered by signals from the instrument  50  because of the battery  12 . The instrument  50  is disposed at a head of the body  10  and above the battery  12 . When the instrument  50  is integrated with the wireless communication module  60 , a wireless communicating path therebetween is higher than the position of the battery  12 . So wireless shielding to the communications of the mobile phone of the user and the instrument  50  is reduced. 
     Furthermore, functions and applications of Internet of things can be added because of the wireless communication module  60 . The wireless communication module  60  uses signals in accordance with long term evolution (LTE) communication protocol, which does not interfere with the signals in 2.4 GHz used by the receiver  20 . The wireless communication module  60  is disposed in the sub-frame  112  and is located at a position uncovered by metal shielding, thereby reducing shielding of signals traveling in a vertical direction and a horizontal direction. Shortcomings because of poor signals can be reduced. The wireless communication module  60  can smoothly communicate with base stations nearby. 
     Through the foregoing paragraphs, the preferred embodiment and detailed descriptions thereof are described for presenting the technical means adopted by the present invention to solve the problem, not to constrain the scope of the claimed invention. Anything that is literally consistent with the claims of the present invention and variations and modifications that are equivalent to the claims are encompassed by the scope of the claims of the present invention.