摘要：【中文】本发明公开了一种反向三轮车或四轮摩托车的梯形转向机构，包括转向摆臂、转向拉杆、轮子减震连接座，两个所述轮子减震连接座的中部均设置有转动主销；所述转向摆臂前部与所述转向拉杆的对称中心铰接；所述转向拉杆的两端与所述轮子减震连接座的前部通过万向联轴器连接；两个所述转动主销的轴心之间的连线为a，两个所述万向联轴器的旋转点之间的连线为b，同一侧的所述转动主销的轴心到万向联轴器的旋转点连线为c，由a、c、b、c组成的四边形为转向梯形结构，其中a的长度小于b的长度。本发明的有益效果包括：转向机构符合阿克曼转角的要求，改善了轮胎磨损严重的情况，改善了车辆行驶过程中的操控性和稳定性。 【EN】The invention discloses a trapezoidal steering mechanism of a reverse tricycle or a four-wheel motorcycle, which comprises a steering swing arm, a steering pull rod and wheel damping connecting seats, wherein the middle parts of the two wheel damping connecting seats are respectively provided with a rotating main pin; the front part of the steering swing arm is hinged with the symmetric center of the steering pull rod; two ends of the steering pull rod are connected with the front part of the wheel damping connecting seat through a universal coupling; the connecting line between the axes of the two rotating main pins is a, the connecting line between the rotating points of the two universal couplings is b, the connecting line from the axis of the rotating main pin to the rotating point of the universal coupling on the same side is c, a quadrangle formed by a, c, b and c is a turning trapezoid structure, wherein the length of a is smaller than that of b. The beneficial effects of the invention include: the steering mechanism meets the requirement of an Ackerman corner, improves the serious abrasion condition of tires, and improves the controllability and stability of the vehicle in the running process.

摘要：【中文】本发明的一种电源轨切换电路，其特征在于包括数字单元和正反馈单元。数字单元包括连接输入电压VIN端口的输入端口、第一电源轨电源电压VDD1端口和第一电源轨地端GND1端口两个电源轨端口，还包括控制电压VA端口、控制电压VB端口两个输出端口；正反馈单元包括连接控制电压VA端口和控制电压VB端口两个输入端口、第二电源轨电源电压VDD2端口和第二电源轨地端GND2端口两个电源轨端口，还包括输出电压VOUT端口的输出端口，本发明由于采用了正反馈电路，对内部逻辑信号进行了进一步锁定，所以在实现电源轨切换功能的同时拥有更强的抗电源轨毛刺的能力。 【EN】The invention discloses a power supply rail switching circuit which is characterized by comprising a digital unit and a positive feedback unit. The digital unit comprises two power supply rail ports, namely an input port connected with an input voltage VIN port, a first power supply rail power supply voltage VDD1 port and a first power supply rail ground end GND1 port, and also comprises two output ports, namely a control voltage VA port and a control voltage VB port; the positive feedback unit comprises two power rail ports which are connected with a control voltage VA port and a control voltage VB port, a second power rail power voltage VDD2 port and a second power rail ground end GND2 port, and an output port of an output voltage VOUT port.