Crank-Shaped Bus Bar Positioning in Electric Brake Motor Units
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Solution Overview
Problem
The existing electric brake motor units face challenges in easily and reliably joining the bus bar to the connector terminal and motor terminal due to the complexity of the current configuration.
Innovation Solution
The electric brake motor unit incorporates a bus bar with a crank shape, featuring a first and second contact portion connected via an intermediate section, which is positioned by a motor bracket with two positioning portions, allowing for easier and more reliable electrical connections by suppressing bus bar movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bus bar is joined to the connector terminal and motor terminal without positioning portions, then the joining operation becomes more complex and less reliable, but the device complexity is reduced
Solution Approach 1:
The bus bar's intermediate section serves dual purposes: it provides electrical connection and simultaneously acts as its own positioning element by passing through the positioning portions of the motor bracket, eliminating the need for separate positioning mechanisms
Solution Approach 2:
The bus bar is divided into distinct sections (first section, intermediate section, second section) with the intermediate section specifically designed to engage with positioning portions, allowing independent positioning of the bus bar relative to the motor bracket
2Ease of operation
If positioning portions are added to the motor bracket, then the bus bar joining becomes easier and more reliable, but the manufacturing complexity increases
Solution Approach 1:
The positioning portions are integrated into the motor bracket as a unified structure rather than separate components, allowing the bracket to simultaneously support the motor and provide positioning features for the bus bar, thereby simplifying the overall manufacturing process
Data Source
AI summary
The electric brake motor unit has: a motor; a connector having a connector terminal; a first section extending in a first direction and having a first contact portion electrically connected to the connector terminal; a second section extending in the first direction and having a second contact portion electrically connected to a motor terminal; and an intermediate section extending in a second direction intersecting with the first direction between the first section and the second section. The electric brake motor unit is provided with: a bus bar in which the first section, the intermediate section, and the second section are connected in a crank shape; and a motor bracket mounted on the motor and having two positioning portions that are mutually separately positioned with a space through which the intermediate section passes and are used for positioning the intermediate section in the first direction.