Sedan door shutting force measuring device

Abstract

A car door closing force measuring device of mechanical engineering field, uses spiral torsion spring to take place of string spring as storage and measuring element, solving measuring error caused by structure design disadvantage of string spring comprising seat device, hydraulic pressure device and measuring device three parts. Seat device consists of braking wheel and seat where hydraulic pressure device and measuring device are installed on and braking wheel is installed under; hydraulic pressure device consists of hydraulic pressure jar connecting to seat by hydraulic pressure pipeline, and bearing plate fixed on seat; measuring device consists of dial, adjusting cap, main pole, fixing pin, expansion link, height adjusting link, measuring probe, locking nut, torsion spring, axis and bearing, with main pole fixed on seat by axis and bearing, spiral torsion spring in adjusting cap which is locked by locking nut, dial fixed on expansion link, expansion link and main pole fixed by fixing pin, height adjusting link and expansion link connected, measuring probe moving up-and-down or revolving along height adjusting link. The invention is simple, accurate, satisfying requirement of on line measurement.

Description

technical field [0001] The invention relates to a measuring device in the field of mechanical engineering, in particular to a measuring device for the closing force of a car door. Background technique [0002] The door opening and closing performance of a car is one of the important indicators for consumers to measure the quality of a car. Car manufacturers must consider from the perspective of most drivers and passengers to control the closing force of the car door within a certain range, so that the door is easy to close and easy to close. It also has a certain heaviness. For this reason, it is necessary to develop a simple, practical and accurate door closing force measuring device to measure and inspect the door closing force to ensure the manufacturing quality of car products. At present, the door closing force test device mainly uses two measurement methods: (1) measuring the minimum energy required to close the door (called the minimum energy method); (2) measuring t...

AI Technical Summary

Problems solved by technology

[0003] In General Motors Corporation, the wire spring type car door closing force measuring device adopted is a measuring device based on the minimum energy method, but in practical applications, the device has exposed many problems: (1) the contact probe of the force measuring device is only It can move in a straight line parallel to the axis of the car wheel, while the door rotates around the axis of the hinge

In this way, when actually measuring the rear door, if an ideal force-measuring point is to be selected, due to the limitations of the structural design, the hydraulic contact surface of the device is within the range of the position of the rear wheel cover of the vehicle body, and the force band for closing the rear door is measured. come difficult

(3) If you want to measure the closing force of different positions of the door, especially when adjusting the force-measuring point along the longitudinal direction of the vehicle body, you need to release the hydraulic system again, move the force-measuring device to the selected point, and then pressurize and fix the two The relative position makes the actual measurement efficiency lower, the simplicity is relatively poor, and it is difficult to meet the needs of modern mass production of cars

After searching, no literature reports about the measuring device for the closing force of the car door were found

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