Tractor Hitch Stabilizer Locking Mechanism
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Solution Overview
Problem
The existing stabilizers for lower links of three-point tractor hitches have limited adjustability due to restricted locking positions, which can lead to unintentional adjustments of the overall length.
Innovation Solution
A stabilizer design featuring a first and second stabilizer member with a locking mechanism that includes a spring clip engaging a recess on the circumference of the limiting means, allowing for adjustable and lockable stages of the overall length, and a blocking flap for additional protection and dirt prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking flap is used to lock stabilizer members at predetermined positions, then compression movement is prevented, but the number of locking positions is limited
Solution Approach 1:
The locking mechanism is segmented into multiple independent recesses distributed along the circumference of the limiting means, allowing the spring clip to engage at different positions. This segmentation enables multiple discrete locking positions while maintaining the simplicity of the blocking flap design.
Solution Approach 2:
The solution transitions from a single-point locking mechanism (blocking flap at one position) to a multi-point locking system by distributing recesses along the circumferential dimension. This allows the spring clip to engage at various angular positions, providing continuous adjustability while the blocking flap maintains compression prevention.
2Reliability
If a protruding projection is used for locking, then locking position is defined, but space is occupied limiting attachment flexibility
Solution Approach 1:
Instead of using a protruding projection that extends outward to define the locking position, the invention inverts the approach by using a recess that is pressed into the limiting means. The spring clip engages with this recess, and the recess itself (rather than a projection) defines the locking position, eliminating the need for additional space.
Solution Approach 2:
The recess is formed within the limiting means structure itself, nesting the locking feature inside the existing component geometry. This allows the locking mechanism to be integrated into the limiting means without adding external protrusions, reducing overall structural complexity.
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 enhances adjustability and prevents unintentional length adjustments while maintaining a clean and functional profile, allowing for continuous and reliable locking of the stabilizer.
Implementation Method 1
The locking means comprises a spring clip which engages or is pressed into a recess provided on the circumference of the limiting means
Implementation Method 2
The spring clip can be pivoted out of the recess by hand against a restoring spring force
Implementation Method 3
A suspension arranged between an inner side of the stabilizer housing and the spring piston in the form of one or more coil springs forces the spring piston into a predetermined rest position and causes the lower links to self-center
Data Source
Figure 1
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AI summary
The stabilizer (10) has a stabilizing element (14) resiliently mounted with respect to another stabilizing element (12). A locking unit (32) is connected to the latter element. The locking unit is brought for limitation of a spring movement of the latter element with respect to the former element in a predetermined locking position. The locking unit forms a single-sided stop in relation to a compression movement of the former element with respect to the latter element, in the locking position. The stop cooperates with a limiting unit (48). The locking unit is designed as a locking flap (34).