Steering Column Lock Integrating Motor and Chassis
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Solution Overview
Problem
Existing steering column locking devices occupy valuable space along the steering column axis and add weight, compromising other essential systems like knee-airbags and crash safety, while being expensive and inefficient.
Innovation Solution
An electrically adjustable steering column with a first locking member attached to the column and a second locking member attached to the vehicle chassis, using existing electric motors to move the column to a locked position where the locking members engage, eliminating the need for additional equipment and space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional locking device is installed next to the steering column, then the steering column can be locked, but it occupies valuable space along the steering column axis and adds weight
Solution Approach 1:
The locking function is merged with the existing electric motor system. The first locking member is integrated into the steering column structure, and the second locking member is integrated into the vehicle chassis, utilizing the space and structural elements already present in the steering column assembly rather than adding a separate locking device
Solution Approach 2:
The electric motor that adjusts the steering column position is also used to move the steering column to the locked position. The control system that manages steering column positioning is extended to control the locking operation, making the existing system perform multiple functions (position adjustment and locking) without requiring additional dedicated components
2Reliability
If a traditional locking device is installed next to the steering column, then the steering column can be locked, but it adds to the total weight of the car
Solution Approach 1:
The locking function is merged with the existing electric motor system. The first locking member is integrated into the steering column structure, and the second locking member is integrated into the vehicle chassis, utilizing the space and structural elements already present in the steering column assembly rather than adding a separate locking device
Solution Approach 2:
The existing electric motor and control system serve the dual purpose of steering column positioning and locking. The system uses its own existing components (motor, control unit, positioning mechanisms) to achieve the locking function without requiring external additional components, thereby avoiding extra weight
3Reliability
If a locking device is installed next to the steering column, then the steering column can be locked, but it increases device complexity and cost
Solution Approach 1:
The locking function is merged with the existing electric motor system. The first locking member is integrated into the steering column structure, and the second locking member is integrated into the vehicle chassis, utilizing the space and structural elements already present in the steering column assembly rather than adding a separate locking device
Solution Approach 2:
The electric motor that adjusts the steering column position is also used to move the steering column to the locked position. The control system that manages steering column positioning is extended to control the locking operation, making the existing system perform multiple functions (position adjustment and locking) without requiring additional dedicated components
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 solution saves space and weight by integrating locking functionality into the existing motor system, ensuring secure locking without additional hardware, enhancing safety and usability for drivers, particularly the elderly or disabled, while preventing theft and optimizing crash response.
Implementation Method 1
The steering column further comprises a first electrical motor where the first electrical motor is operably connected to the vehicle control system. The steering column is arranged to be moved laterally and/or axially by the first electric motor.
Implementation Method 2
The locking means comprise a first locking member attached to the steering column and a second locking member arranged to be attached to the vehicle chassis, where the first electric motor is arranged to move the steering column to a locked position in which the first locking member and the second locking member are arranged to engage, thereby preventing rotation of the steering column.
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a steering column (1) for a vehicle. The steering column (1) comprises a steering shaft (2) rotatably supported by the steering column (1). The steering column (1) further comprises a first electrical motor where the first electrical motor is operably connected to the vehicle control system. The steering column (1) is arranged to be moved laterally and/or axially by the first electric motor. The steering column (1) further comprises locking means (10) arranged to lock the steering column (1) thereby preventing rotation of the steering column (1). The locking means (10) comprise a first locking member (11) attached to the steering column (1) and a second locking member (12) arranged to be attached to the vehicle chassis, where the first electric motor is arranged to move the steering column (1) to a locked position in which the first locking member (11) and the second locking member (12) are arranged to engage, thereby preventing rotation of the steering column (1).