Side Gear Moving Range Measurement Jig
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for measuring the moving range of a side gear in differential units are costly due to complex mechanisms involving multiple actuators and are difficult to implement without altering the unit's structure.
Innovation Solution
A device with a simple mechanism using a single or few actuators, where a jig with a slope is slid vertically to contact and move the side gear along its surface, aided by a controller to recognize sliding speed or motor voltage for precise measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a moving range measurement device with a mechanism including a plurality of actuators is used to measure the moving range of the side gear, then the measurement can be performed, but the device becomes expensive and complex
Solution Approach 1:
The invention extracts only the essential measurement function from the complex multi-actuator system. By using a single actuator to drive a jig with a slope that contacts the side gear, the device isolates the core measurement capability while eliminating unnecessary mechanical complexity. The slope converts the actuator's linear motion into the required side gear displacement, achieving measurement with minimal components.
Solution Approach 2:
The jig with a slope serves as an intermediary mechanism between the actuator and the side gear. This intermediary converts the actuator's motion in one direction into the desired motion of the side gear in another direction, enabling measurement functionality while keeping the actuator system simple. The slope acts as a mechanical transformer that bridges the gap between simple actuator motion and complex measurement requirements.
2Measurement precision
If a mechanism is inserted into the differential case to press the side gear, then the side gear can be measured, but it becomes difficult to measure the moving range of the side gear
Solution Approach 1:
Instead of inserting a complex mechanism into the differential case to press the side gear directly, the invention inverts the approach: a jig with a slope is inserted and allowed to contact the side gear's top land from above. The actuator then moves the jig vertically, and the slope automatically converts this motion into the required pressing action on the side gear. This inversion simplifies both the insertion process and the measurement operation.
Solution Approach 2:
The invention changes the parameter of contact direction by using the slope of the jig. Rather than pressing the side gear directly in the measurement direction, the slope converts vertical motion into axial pressing force. This parameter transformation enables easy insertion and operation while maintaining accurate measurement capability.
3Device complexity
If a simple mechanism with one actuator is used to measure the side gear moving range, then the cost is reduced, but the ability to press and measure the side gear accurately is compromised
Solution Approach 1:
The jig incorporates a sloped surface that acts as a mechanical advantage element. This slope converts the actuator's linear vertical motion into controlled axial pressing force on the side gear. The geometric transformation ensures that even a single actuator can achieve accurate measurement by leveraging the mechanical transformation provided by the slope, maintaining measurement precision while reducing actuator quantity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces costs, simplifies the measurement process, and allows for accurate determination of the side gear's moving range without altering the differential unit's structure, enabling easy insertion and precise measurement of the side gear's movement.
Implementation Method 1
an actuator that slides the jig, and the actuator slides the jig to make the jig move toward the side gear in a state in which the slope of the jig is in contact with the side gear, to thereby move the side gear along the slope
Data Source
AI summary
A moving range measurement device of a side gear used in a differential unit, the differential unit including: a differential case; a side gear arranged inside the differential case; and a spring that biases the side gear in a direction parallel to a central axis, in which: the device includes: a jig in which a slope is formed, the jig being slidable in a direction vertical to the central axis of the side gear; and an actuator that slides the jig, and the actuator slides the jig to make the jig move toward the side gear in a state in which the slope is in contact with the side gear, to thereby move the side gear along the slope.