Electric turnover mechanism for vehicle-mounted liquid crystal television

Abstract

The invention discloses an electric turnover device of vehicle-mounted liquid crystal television, comprising a motor fixing support, a direct-current speed-reduction motor, an axle sleeve, a damping block, a right fixing support, a right bearing, a plurality of external friction sheet, a plurality of friction sheet, a spring, a nut, a left shaft, a left bearing, a left fixing support, and an angle sensor. The friction force generated by the engagement between the damping block and the axle sleeve forms damping force, to confirm that in serious vibration, the motor turnover device will not damage speed-reduction gear and can avoid the swig of liquid crystal screen, to affect vision effect. The nut, spring, external friction sheets, internal friction sheets, and right fixing support form a constant-torque device, to provide flexibility to the electric turnover device in turnover process, therefore, the liquid crystal screen can automatically stop when meets hand or obstacle in turnover, to avoid clamping hand and protect motor.

Description

technical field [0001] The invention relates to a vehicle-mounted liquid crystal television, in particular to an electric turning mechanism for a vehicle-mounted liquid crystal television. Background technique [0002] LCD TVs are widely used in the vehicle field due to their novel appearance, compact structure, light portability, and clear and vivid pictures. With the rapid development of my country's national economy and the continuous improvement of people's pursuit of quality of life, more and more buses / taxis, including private cars, have been equipped with on-board LCD TVs, which can play video information services and Entertainment programs are used to eliminate fatigue when people take the bus, to effectively publicize the bus image and provide passengers with an excellent and relaxed travel environment. It is also a good advertising medium that can bring more passengers The more direct / more impactful advertising, its return on investment is also extremely considerabl...

AI Technical Summary

Problems solved by technology

A vehicle-mounted LCD TV in the prior art uses a motor to drive the liquid crystal display to rotate. When passengers need to watch video programs, the liquid crystal display is flipped to a suitable viewing angle. When passengers do not need to watch programs, the liquid crystal display is automatically closed, which can Bring better use effect, but, existing vehicle-mounted liquid crystal TV is to use DC deceleration motor to directly drive liquid crystal screen to carry out rotary motion as turning mechanism, and the turning mechanism of this structure has the following defects: one is the vehicle-mounted liquid crystal television The vibration in the operating environment is intense, and the vibration torque suffered by the LCD screen directly acts on the reduction gear of the DC reduction motor, which makes the reduction gear easily damaged; second, if the passenger is within the rotation range of the LCD screen during the flipping process, it is easy to pinch the passenger Third, when the LCD screen touches an obstacle during the flipping process, it is easy to damage the whole machine; fourth, the DC gear motor is decelerated by a gear set, and the rotation gap between the gears cannot be completely Therefore, the use of the LCD screen in a vibration environment will cause the LCD screen to swing freely, affecting the viewing effect of passengers; fifth, when passengers accidentally push the LCD screen, it is easy to cause damage to the whole machine

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