Fitness Equipment Adjustment Structure With Spring-Locked Weight Fastening
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Solution Overview
Problem
Existing fitness equipment weight adjustment mechanisms, such as screw threaded systems, are time-consuming, prone to screw loss, and require careful tightening to prevent weight plates from falling off, posing operational inefficiencies and safety risks.
Innovation Solution
An adjustment structure featuring a holding component with an adjusting component and a movable fastener, utilizing an adjusting protrusion and spring mechanism, along with serrated notches, allows for quick and secure attachment and detachment of weight plates through a spring-actuated engagement system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw threaded system is used for weight plate adjustment, then weight plates can be securely fastened, but the adjustment process becomes time-consuming and operationally inefficient
Solution Approach 1:
The patent employs a spring-loaded adjusting protrusion that dynamically engages with serrated notches on the weight plate. The spring provides continuous pressure to maintain engagement, while the movable nature of the protrusion allows for quick release and re-engagement, enabling rapid weight adjustment without time-consuming screw operations
Solution Approach 2:
The spring mechanism automatically maintains engagement pressure between the adjusting protrusion and the weight plate's serrated notches. This self-actuating system eliminates the need for manual tightening operations, as the spring continuously applies force to secure the weight plate in position without requiring user intervention
2Reliability
If multiple screws/bolts are used for weight plate attachment, then secure fastening is achieved, but the complexity of the device increases and screw loss becomes a problem
Solution Approach 1:
The patent consolidates multiple fastening functions into a single integrated adjusting component. The adjusting protrusion with spring mechanism combines the functions of multiple screws into one unified structure that engages with the weight plate through a single assembly operation, thereby reducing device complexity while maintaining secure fastening
Solution Approach 2:
The adjusting component serves multiple functions simultaneously: it provides secure fastening through the spring-loaded protrusion, enables rapid adjustment through the release mechanism, and eliminates the need for separate screws and bolts. This multi-functional design reduces the overall number of parts required in the system
3Reliability
If screw tightening is not sufficient, then weight plates may fall off creating safety risks, but excessive tightening increases operational complexity and time consumption
Solution Approach 1:
The spring mechanism is pre-loaded to provide continuous engagement pressure on the weight plate before any detachment force is applied. This beforehand cushioning ensures that the weight plate remains securely held in position, preventing accidental detachment during use while maintaining simple operation through the automatic spring pressure
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
Enables rapid and convenient weight adjustment with enhanced safety by eliminating the need for multiple screws and ensuring secure fastening, reducing the risk of weight plate detachment and loss.
Implementation Method 1
two ends of the spring elastically against the bottom end of the adjusting protrusion and the bottom surface of the assembly groove, respectively; wherein the spring elastically pushes the adjusting protrusion to move up and down in the assembly groove
Implementation Method 2
the shank includes a plurality of serrated notch on outer surface, and the serrated notch corresponds to the incline portion; wherein when the adjusting protrusion is elastically pushed by the spring, the incline portion is match and limited with the serrated notch
Data Source
Figure 1
Figure 2
Figure 2A
AI summary
An adjustment structure of fitness equipment is provided. The adjustment structure of fitness equipment includes a holding component (10), having a mounting portion (101), and an assembly hole (102); an adjusting component (20), assembled on the mounting portion (101), and the adjusting component (20) includes an adjusting plate (201), an adjusting protrusion (202) and a spring (203); wherein the adjusting plate (201) includes an assembly groove (204), the adjusting protrusion (202) is movably embedded in the assembly groove (204), and two ends of the spring (203) elastically against the bottom end of the adjusting protrusion (202) and the bottom surface of the assembly groove (204) respectively; and a movable fastener (30), including a shank (301) and a head (302); wherein one end of the shank (301) is connected to the head (302) and the other end is used to movable insert into the assembly hole (102) and the perforation (205); wherein the shank (301) includes a plurality of serrated notch (303) on outer surface, and the serrated notch corresponds to the incline portion (206).