L-Shaped Push-Pull Handle with Spring-Loaded Locking

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Solution Overview

Problem

Existing exercise devices for bodyweight exercises like push-ups and pull-ups lack versatility and stability, particularly in transitioning between these exercises and securing to door frames for pull-ups.

Innovation Solution

An L-shaped exercise device with spring-loaded mechanisms that allows adjustment for push-ups and conversion into a pull-up device by clamping onto a door frame, providing stability through compression force and additional support from door molding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single exercise device is designed to perform both push-ups and pull-ups, then versatility is improved, but device complexity increases

Engineering Contradiction:
ImproveversatilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The exercise device is designed with an L-shaped tube assembly that can function as both a push-up handle and a pull-up device. The same basic structure serves multiple purposes through configuration changes rather than requiring separate dedicated devices for each exercise type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device incorporates adjustable height mechanisms and selectable button connectors that allow the L-shaped tubes to be repositioned and reconfigured. This dynamic adjustability enables the same device to adapt between different exercise configurations (push-up vs. pull-up positions) without being fixed in a single function.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the device uses spring-loaded mechanisms for adjustment and locking, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The spring-loaded button connectors automatically engage and lock into corresponding holes on the foot tubes when the L-shaped tubes are positioned. The mechanism self-locks without requiring additional fastening actions, and can be easily released by pressing the button, providing intuitive operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Traditional complex locking mechanisms (screws, clips, or multiple fasteners) are replaced with a simple spring-loaded button system. This substitution maintains functional reliability while significantly simplifying the user interaction and reducing mechanical complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the L-shaped tubes are made adjustable in height, then adaptability is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improveadjustable heightVSAvoidmanufacturing precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The L-shaped tubes are designed with multiple discrete height positions corresponding to different hole locations along the tube length. This segmentation into standardized intervals allows for easier manufacturing compared to continuous adjustment mechanisms, while still providing multiple adjustable positions for different user needs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustable height feature allows the device to adapt to different user heights and exercise requirements. The selectable button connectors enable easy repositioning between predetermined height levels, balancing manufacturing feasibility with user adaptability.

Inventive Principle:
Principle #15Dynamics

4Stability of the object's composition

If the spring is biased to exert inward force between the tubes, then stability during push-ups is improved, but the device becomes more complex

Engineering Contradiction:
ImprovestabilityVSAvoiddevice complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The spring is biased to exert an inward force between the two L-shaped tubes, creating a compressive pre-load that stabilizes the structure during push-up exercises. This counteracting force prevents the tubes from spreading apart under user weight, providing inherent structural stability.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The spring mechanism is integrated within the handle assembly, merging the stabilization function with the existing structural components rather than adding separate external stabilization elements. This integration minimizes additional complexity while achieving the stability function.

Inventive Principle:
Principle #5Merging (Combining)

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 secure and stable performance of both push-ups and pull-ups, with adjustable height and grip options, and effective stabilization against the door frame during pull-ups.

Implementation Method 1

A spring within the handle may be biased to and between the handle end of the first L-tube and the handle end of the second L-tube. The spring may exert an inward force between the two tubes with respect to the handle.

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentUS8864638B2Push-pull handles
Publication Date: 2014.10.21 EXEMPLAR DESIGN LLC
  • US8864638B2 patent drawing
  • US8864638B2 patent drawing
  • US8864638B2 patent drawing

AI summary

An exercise device for performing push ups and pull ups is disclosed. The device contains first and second tubes slidably engaged with a handle, which may be covered by a grip. A spring biases to the two tubes, drawing them inwardly together with respect to the handle. A first foot tube, including a first base, engages the second end of the first tube; a first button connector arranged to selectively lock the first foot tube with respect to the second end of the first tube. A second foot tube, including a second base, engages the second end of the second tube; and a second button connector selectively locks the second foot tube with respect to the second end of the second tube. The device may be engaged with a door frame to perform pull-ups.