Motor-Integrated Hinge Arm for Power Trunk Systems
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Solution Overview
Problem
The existing motor-separated power trunk opening system for vehicles is cumbersome due to the need for multiple bolting operations, increases production costs and weight, and generates operational noise due to the complex power transmission system and motor mounting bracket.
Innovation Solution
A motor-integrated power trunk opening system where the motor and actuator are directly coupled with the hinge arm, reducing the length of the torque transmission path and using a common coupling structure to simplify assembly and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a mounting bracket is used to support the motor, then the motor can be stably mounted on the vehicle body, but the number of bolting operations increases and assembly becomes more complex
Solution Approach 1:
The motor support function is merged with the hinge arm structure itself. The hinge arm is designed to directly support the motor without requiring a separate mounting bracket, thereby eliminating additional bolting operations and simplifying assembly while maintaining stable motor support through the integrated structure.
2Stability of the object's composition
If a mounting bracket is used to support the motor, then the motor can be securely fixed, but the vehicle weight increases due to additional components
Solution Approach 1:
The motor support function is combined with the hinge arm structure, eliminating the need for a separate mounting bracket. This integration removes the additional weight of the bracket and associated fasteners while maintaining secure motor fixation through the optimized hinge arm design.
3Ease of operation
If a power transmitting system with hinge arm and rod is used, then the trunk lid can be opened, but operational noise increases
Solution Approach 1:
The rod component is extracted from the power transmitting system. The hinge arm is redesigned to directly transmit power from the motor to open the trunk lid without requiring the intermediate rod mechanism, thereby eliminating the noise generated by the rod's movement and connections while preserving the essential trunk opening function.
4Stability of the object's composition
If multiple bolts are used to fix the mounting bracket, then the motor can be firmly attached, but production cost increases
Solution Approach 1:
The motor attachment function is merged into the hinge arm structure, eliminating the need for a separate mounting bracket and its associated multiple bolts. This integration reduces the number of fasteners required and simplifies the manufacturing process, thereby lowering production costs while maintaining firm motor attachment through the integrated design.
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 design simplifies the assembly process, reduces operational noise, and lowers production costs by eliminating the need for a separate mounting bracket and reducing the number of bolts, while maintaining effective trunk opening functionality.
Implementation Method 1
an actuator (30) including a motor device (40) which directly applies, to the hinge arm (10), rotating force generated by operation thereof
Data Source
AI summary
A motor-integrated power trunk opening system applied to a vehicle may include a hinge arm which is divided into a power side portion and an interlocking side portion to support left and right end portions of a trunk lid covering a trunk compartment, and an actuator which is mounted to the power side hinge arm and moves the hinge arm upwards using generated power so that the trunk lid opens