Low Profile Table Base Foot Pedal Locking Mechanism
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Solution Overview
Problem
Conventional table base systems have inconvenient locking mechanisms that require tedious manipulation and often sit too high above the ground, making them impractical for use.
Innovation Solution
A low profile table base system with a locking mechanism accessible from the top, featuring a mechanical cam system and spring-aided breaking apparatus, allowing easy engagement and disengagement via a foot pedal for convenient locking and unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the locking mechanism is integrated into the wheels, then the locking function is achieved, but the operation becomes tedious and inconvenient
Solution Approach 1:
The locking mechanism is extracted from the wheel assembly and relocated to the table base structure. The foot pedal actuation system is separated from the wheel locks, allowing independent operation of the braking/locking function without manipulating wheel-integrated mechanisms. This extraction resolves the contradiction by making the locking operation convenient through foot pedal actuation while maintaining functional integration at the base level.
Solution Approach 2:
A foot pedal actuation system serves as an intermediary between the user and the locking mechanism. The pedal connects to the base structure and transmits force through linkages to engage the locking function. This intermediary mechanism transforms the direct manipulation of complex wheel locks into a simple foot pressure action, improving ease of operation while the base-integrated mechanism handles the complexity of the locking function.
2Ease of operation
If the locking mechanism sits high above the ground, then the locking function is accessible, but the table profile becomes inconveniently high
Solution Approach 1:
The locking mechanism is repositioned from a vertical arrangement (high above ground) to a horizontal arrangement (at the base level). The foot pedal extends horizontally from the base, allowing user access at ground level rather than requiring reach up to a elevated mechanism. This dimensional change resolves the contradiction by maintaining accessibility through horizontal extension while keeping the overall table profile low to the ground.
Solution Approach 2:
The locking mechanism functionality is copied to the base structure rather than being dependent on the wheel assembly height. By implementing the locking function at the base level with foot pedal actuation, the system replicates the essential locking capability at a different location (ground level) that maintains low profile while ensuring accessibility.
3Ease of operation
If a mechanical cam system with spring-aided breaking apparatus is used, then easy engagement and disengagement is achieved, but the device complexity increases
Solution Approach 1:
The spring mechanism is pre-loaded and positioned within the cam system to automatically engage the locking function when the foot pedal is actuated. The spring stores energy in advance, so that upon pedal depression, the cam rotates and the spring releases to quickly engage the locking apparatus. This preliminary preparation of the spring energy resolves the contradiction by enabling easy one-action engagement while the pre-positioned components manage the mechanical complexity.
Solution Approach 2:
The mechanical cam system incorporates dynamic elements including spring-loaded components and rotating cams that move through defined paths during actuation. The spring provides dynamic force multiplication, allowing the foot pedal's modest input force to generate sufficient locking force. This dynamic design achieves easy operation through motion amplification while the controlled dynamic elements manage the complexity within acceptable bounds.
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
The solution provides a convenient and space-efficient locking mechanism that allows users to easily lock the table in place without requiring manual manipulation of wheel locks, maintaining a low profile and ensuring stability on uneven surfaces.
Implementation Method 1
featuring a mechanical cam system and spring-aided breaking apparatus
Data Source
AI summary
A table base system includes a platform extending from a first end to a second end; a first braking apparatus connected to the platform at the first end, the braking apparatus having a mechanical cam; a spring to aid in retaining the braking apparatus in a locked position; and a lever to move the mechanical cam; the lever is accessible from a top of the platform; and the braking apparatus is engaged via pressure applied to the lever.