Electric vehicle axle bearing cup and electric vehicle frame assembly

Abstract

The invention provides an electric vehicle axle bearing cup which comprises a bearing sleeve connection portion and an end portion. The bearing sleeve connection portion is cylindrical and is connected with the end portion into a whole. The bearing sleeve connection portion comprises a pressure sensing and measuring portion which is arranged on a cylinder of the bearing sleeve connection portion and serves as a part of the cylinder, the outer wall and the inner wall of the pressure sensing and measuring portion have defaults relative to a regular cylinder, and the distance from the portion between the defaults of the inner wall of the pressure sensing and measuring portion to the axis of the pressure sensing and measuring portion is smaller than the distance from the defaults to the axis; the position, adjacent to the end portion, of the pressure sensing and measuring portion is provided with a bar-shaped hole, and the pressure borne by the inner wall of the bearing cup in the centrifugal direction is sensed and measured through the pressure sensing and measuring portion. The electric vehicle axle bearing cup is simple in structure, has the axle mechanics sensing function, is easy to assemble, can sense and measure electric vehicle axle stress accurately, does not change the existing structure of an electric vehicle axle of a whole vehicle, and is good in universality and low in manufacturing cost.

Description

technical field [0001] The invention relates to a bearing bowl, in particular to an electric vehicle axle bearing bowl with a mechanical sensing device and an assembly thereof. Background technique [0002] Electric vehicle power control systems are widely used in the field of electric vehicles. [0003] When the battery life of the electric vehicle is insufficient or people want to exercise the body by pedaling the human-driven wheel of the electric vehicle to drive the chain, it is necessary to sense the force of the axle roller connected to the pedal of the electric vehicle through the torque sensor and rotation speed, that is, the strength and speed of manpower pedaling the pedals of the electric vehicle to adjust the output of the electric torque of the electric power assist system of the electric vehicle. For example, when the user pedals the pedals of the electric vehicle hard and fast, the torque sensor senses the force and rotation speed of the shaft roller, and ad...

AI Technical Summary

Problems solved by technology

[0004] However, the torque assist sensor in the prior art includes measuring devices such as the central axis faceplate torque sensor, when collecting torque and speed signals, the structure is very complicated, the cost is very high, and the appearance is awkward, while the rear hook torque in the prior art The universality of the sensor is relatively poor, and the existing frame structure needs to be changed, which does not meet the universality of the frame and also affects the cost of the whole vehicle

Images