Motor Terminal Bracket Structure for Frame Ground and Deformation Control
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Solution Overview
Problem
Existing motors face challenges in applying frame ground in a simple configuration and in preventing deformation of connection terminals due to excessive force from external terminals.
Innovation Solution
The motor design includes a metal frame with a tubular shape, a bracket with a tubular part fitted inside the frame, and terminals with a first portion connected to an external terminal and a second portion in contact with the metal frame, ensuring the second portion is supported between the frame's inner surface and the bracket's outer surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frame ground is implemented by directly connecting to substrate wiring line or inner surface of frame via jumper line, then grounding is achieved, but wiring work becomes complicated and disconnection risk increases due to vibrations
Solution Approach 1:
The invention extracts the grounding function from the complex wiring system (substrate connections and jumper lines) and implements it through a simpler alternative: the bracket itself serves as the grounding path by direct contact with the frame. This eliminates the need for separate jumper lines and complex substrate wiring for grounding purposes.
Solution Approach 2:
The bracket is given multiple functions: it provides structural support for the connection terminal and simultaneously serves as the grounding path. By making the bracket conductive and positioning it to contact the frame, it performs both mechanical and electrical grounding functions, eliminating the need for separate grounding components.
2Ease of operation
If connection terminal is directly exposed for external terminal connection, then external connection is enabled, but excessive force causes deformation of connection terminal
Solution Approach 1:
The bracket is designed in advance to provide mechanical support to the connection terminal. By positioning the bracket to contact and support the connection terminal before external force is applied, the structure is pre-prepared to resist deformation when external terminals are connected and disconnected repeatedly.
Solution Approach 2:
The bracket acts as an intermediary between the connection terminal and the external forces applied during terminal connection. It provides a rigid support structure that mediates the mechanical stress, preventing excessive force from being transmitted to the connection terminal itself.
Data Source
AI summary
To provide a motor easily applied with frame ground in a simple configuration and capable of suppressing deformation of a connection terminal in contact with an external terminal connecting to an external device. A motor of the present application includes a metal member of a tubular shape having an opening portion and an inner peripheral surface forming the opening portion in an axial line x direction, a bracket including a tubular part disposed inside the opening portion, and a terminal provided at the bracket. The terminal includes a first portion connected to an external terminal connecting to an external device, and a second portion in contact with the metal member. The second portion is disposed between the inner peripheral surface of the metal member and an outer peripheral surface of the tubular part of the bracket.